The OV5693 is a 5 Mpx CMOS image sensor, connected via MIPI CSI-2. The
chip is capable of a single lane configuration, but currently only two
lanes are supported.
Most of the sensor's features are supported, with the main exception
being the lens correction algorithm.
The driver provides all mandatory, optional and recommended V4L2 controls
for maximum compatibility with libcamera.
Signed-off-by: Daniel Scally <[email protected]>
---
MAINTAINERS | 7 +
drivers/media/i2c/Kconfig | 11 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/ov5693.c | 1585 ++++++++++++++++++++++++++++++++++++
4 files changed, 1604 insertions(+)
create mode 100644 drivers/media/i2c/ov5693.c
diff --git a/MAINTAINERS b/MAINTAINERS
index cf44b3e77b90..34311d55b189 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13140,6 +13140,13 @@ S: Maintained
T: git git://linuxtv.org/media_tree.git
F: drivers/media/i2c/ov5675.c
+OMNIVISION OV5693 SENSOR DRIVER
+M: Daniel Scally <[email protected]>
+L: [email protected]
+S: Maintained
+T: git git://linuxtv.org/media_tree.git
+F: drivers/media/i2c/ov5693.c
+
OMNIVISION OV5695 SENSOR DRIVER
M: Shunqian Zheng <[email protected]>
L: [email protected]
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 4c1ae687ab10..4da2278ec84c 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -985,6 +985,17 @@ config VIDEO_OV5675
To compile this driver as a module, choose M here: the
module will be called ov5675.
+config VIDEO_OV5693
+ tristate "OmniVision OV5693 sensor support"
+ depends on I2C && VIDEO_V4L2
+ select V4L2_FWNODE
+ help
+ This is a Video4Linux2 sensor driver for the OmniVision
+ OV5693 camera.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ov5693.
+
config VIDEO_OV5695
tristate "OmniVision OV5695 sensor support"
depends on I2C && VIDEO_V4L2
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 65cfc94d25b6..7df680e110c9 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -75,6 +75,7 @@ obj-$(CONFIG_VIDEO_OV5647) += ov5647.o
obj-$(CONFIG_VIDEO_OV5648) += ov5648.o
obj-$(CONFIG_VIDEO_OV5670) += ov5670.o
obj-$(CONFIG_VIDEO_OV5675) += ov5675.o
+obj-$(CONFIG_VIDEO_OV5693) += ov5693.o
obj-$(CONFIG_VIDEO_OV5695) += ov5695.o
obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
obj-$(CONFIG_VIDEO_OV7251) += ov7251.o
diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
new file mode 100644
index 000000000000..0460371164ea
--- /dev/null
+++ b/drivers/media/i2c/ov5693.c
@@ -0,0 +1,1585 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
+ *
+ * Adapted from the atomisp-ov5693 driver, with contributions from:
+ *
+ * Daniel Scally
+ * Jean-Michel Hautbois
+ * Fabian Wuthrich
+ * Tsuchiya Yuto
+ * Jordan Hand
+ * Jake Day
+ */
+
+#include <linux/acpi.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-ctrls.h>
+
+/* System Control */
+#define OV5693_SW_RESET_REG 0x0103
+#define OV5693_SW_STREAM_REG 0x0100
+#define OV5693_START_STREAMING 0x01
+#define OV5693_STOP_STREAMING 0x00
+#define OV5693_SW_RESET 0x01
+
+#define OV5693_REG_CHIP_ID_H 0x300A
+#define OV5693_REG_CHIP_ID_L 0x300B
+/* Yes, this is right. The datasheet for the OV5693 gives its ID as 0x5690 */
+#define OV5693_CHIP_ID 0x5690
+
+/* Exposure */
+#define OV5693_EXPOSURE_L_CTRL_HH_REG 0x3500
+#define OV5693_EXPOSURE_L_CTRL_H_REG 0x3501
+#define OV5693_EXPOSURE_L_CTRL_L_REG 0x3502
+#define OV5693_EXPOSURE_S_CTRL_HH_REG 0x3506
+#define OV5693_EXPOSURE_S_CTRL_H_REG 0x3507
+#define OV5693_EXPOSURE_S_CTRL_L_REG 0x3508
+#define OV5693_EXPOSURE_CTRL_HH(v) (((v) & GENMASK(14, 12)) >> 12)
+#define OV5693_EXPOSURE_CTRL_H(v) (((v) & GENMASK(11, 4)) >> 4)
+#define OV5693_EXPOSURE_CTRL_L(v) (((v) & GENMASK(3, 0)) << 4)
+#define OV5693_INTEGRATION_TIME_MARGIN 8
+#define OV5693_EXPOSURE_MIN 1
+#define OV5693_EXPOSURE_STEP 1
+
+/* Analogue Gain */
+#define OV5693_GAIN_CTRL_H_REG 0x350A
+#define OV5693_GAIN_CTRL_H(v) (((v) >> 4) & GENMASK(2, 0))
+#define OV5693_GAIN_CTRL_L_REG 0x350B
+#define OV5693_GAIN_CTRL_L(v) (((v) << 4) & GENMASK(7, 4))
+#define OV5693_GAIN_MIN 1
+#define OV5693_GAIN_MAX 127
+#define OV5693_GAIN_DEF 8
+#define OV5693_GAIN_STEP 1
+
+/* Digital Gain */
+#define OV5693_MWB_RED_GAIN_H_REG 0x3400
+#define OV5693_MWB_RED_GAIN_L_REG 0x3401
+#define OV5693_MWB_GREEN_GAIN_H_REG 0x3402
+#define OV5693_MWB_GREEN_GAIN_L_REG 0x3403
+#define OV5693_MWB_BLUE_GAIN_H_REG 0x3404
+#define OV5693_MWB_BLUE_GAIN_L_REG 0x3405
+#define OV5693_MWB_GAIN_H_CTRL(v) (((v) >> 8) & GENMASK(3, 0))
+#define OV5693_MWB_GAIN_L_CTRL(v) ((v) & GENMASK(7, 0))
+#define OV5693_MWB_GAIN_MAX 0x0fff
+#define OV5693_DIGITAL_GAIN_MIN 1
+#define OV5693_DIGITAL_GAIN_MAX 4095
+#define OV5693_DIGITAL_GAIN_DEF 1024
+#define OV5693_DIGITAL_GAIN_STEP 1
+
+/* Timing and Format */
+#define OV5693_CROP_START_X_H_REG 0x3800
+#define OV5693_CROP_START_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
+#define OV5693_CROP_START_X_L_REG 0x3801
+#define OV5693_CROP_START_X_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_CROP_START_Y_H_REG 0x3802
+#define OV5693_CROP_START_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
+#define OV5693_CROP_START_Y_L_REG 0x3803
+#define OV5693_CROP_START_Y_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_CROP_END_X_H_REG 0x3804
+#define OV5693_CROP_END_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
+#define OV5693_CROP_END_X_L_REG 0x3805
+#define OV5693_CROP_END_X_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_CROP_END_Y_H_REG 0x3806
+#define OV5693_CROP_END_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
+#define OV5693_CROP_END_Y_L_REG 0x3807
+#define OV5693_CROP_END_Y_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_OUTPUT_SIZE_X_H_REG 0x3808
+#define OV5693_OUTPUT_SIZE_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
+#define OV5693_OUTPUT_SIZE_X_L_REG 0x3809
+#define OV5693_OUTPUT_SIZE_X_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_OUTPUT_SIZE_Y_H_REG 0x380a
+#define OV5693_OUTPUT_SIZE_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
+#define OV5693_OUTPUT_SIZE_Y_L_REG 0x380b
+#define OV5693_OUTPUT_SIZE_Y_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_TIMING_HTS_H_REG 0x380c
+#define OV5693_TIMING_HTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
+#define OV5693_TIMING_HTS_L_REG 0x380d
+#define OV5693_TIMING_HTS_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_TIMING_VTS_H_REG 0x380e
+#define OV5693_TIMING_VTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
+#define OV5693_TIMING_VTS_L_REG 0x380f
+#define OV5693_TIMING_VTS_L(v) ((v) & GENMASK(7, 0))
+#define OV5693_TIMING_MAX_VTS 0xffff
+#define OV5693_TIMING_MIN_VTS 0x04
+
+#define OV5693_OFFSET_START_X_H_REG 0x3810
+#define OV5693_OFFSET_START_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
+#define OV5693_OFFSET_START_X_L_REG 0x3811
+#define OV5693_OFFSET_START_X_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_OFFSET_START_Y_H_REG 0x3812
+#define OV5693_OFFSET_START_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
+#define OV5693_OFFSET_START_Y_L_REG 0x3813
+#define OV5693_OFFSET_START_Y_L(v) ((v) & GENMASK(7, 0))
+
+#define OV5693_SUB_INC_X_REG 0x3814
+#define OV5693_SUB_INC_Y_REG 0x3815
+
+#define OV5693_FORMAT1_REG 0x3820
+#define OV5693_FORMAT1_FLIP_VERT_ISP_EN BIT(2)
+#define OV5693_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1)
+#define OV5693_FORMAT1_VBIN_EN BIT(0)
+#define OV5693_FORMAT2_REG 0x3821
+#define OV5693_FORMAT2_HDR_EN BIT(7)
+#define OV5693_FORMAT2_FLIP_HORZ_ISP_EN BIT(2)
+#define OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1)
+#define OV5693_FORMAT2_HBIN_EN BIT(0)
+
+#define OV5693_ISP_CTRL2_REG 0x5002
+#define OV5693_ISP_SCALE_ENABLE BIT(7)
+
+/* Pixel Array */
+#define OV5693_NATIVE_WIDTH 2624U
+#define OV5693_NATIVE_HEIGHT 1956U
+#define OV5693_ACTIVE_START_LEFT 16U
+#define OV5693_ACTIVE_START_TOP 6U
+#define OV5693_ACTIVE_WIDTH 2592U
+#define OV5693_ACTIVE_HEIGHT 1944U
+
+/* Test Pattern */
+#define OV5693_TEST_PATTERN_REG 0x5e00
+#define OV5693_TEST_PATTERN_ENABLE BIT(7)
+#define OV5693_TEST_PATTERN_ROLLING BIT(6)
+#define OV5693_TEST_PATTERN_RANDOM 0x01
+#define OV5693_TEST_PATTERN_BARS 0x00
+
+/* System Frequencies */
+#define OV5693_XVCLK_FREQ 19200000
+#define OV5693_LINK_FREQ_400MHZ 400000000
+#define OV5693_PIXEL_RATE 160000000
+
+/* Miscellaneous */
+#define OV5693_NUM_MBUS_FMTS 1
+#define OV5693_NUM_SUPPLIES 2
+
+#define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd)
+
+struct ov5693_reg {
+ u16 reg;
+ u8 val;
+};
+
+struct ov5693_reg_list {
+ u32 num_regs;
+ const struct ov5693_reg *regs;
+};
+
+struct ov5693_resolution {
+ char *desc;
+ int fps;
+
+ struct v4l2_rect crop;
+
+ unsigned int crop_start_x;
+ unsigned int offset_x;
+ unsigned int output_size_x;
+ unsigned int crop_end_x;
+ unsigned int hts;
+
+ unsigned int crop_start_y;
+ unsigned int offset_y;
+ unsigned int output_size_y;
+ unsigned int crop_end_y;
+ unsigned int vts;
+
+ unsigned int inc_x_odd;
+ unsigned int inc_x_even;
+ unsigned int inc_y_odd;
+ unsigned int inc_y_even;
+
+ bool binning_x;
+ bool binning_y;
+ bool scale_enable;
+};
+
+struct ov5693_device {
+ struct i2c_client *client;
+ struct device *dev;
+
+ /* Protect against concurrent changes to controls */
+ struct mutex lock;
+
+ struct gpio_desc *reset;
+ struct gpio_desc *powerdown;
+ struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES];
+ struct clk *clk;
+
+ const struct ov5693_resolution *mode;
+ bool streaming;
+
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+
+ struct ov5693_v4l2_ctrls {
+ struct v4l2_ctrl_handler handler;
+ struct v4l2_ctrl *link_freq;
+ struct v4l2_ctrl *pixel_rate;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *analogue_gain;
+ struct v4l2_ctrl *digital_gain;
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+ struct v4l2_ctrl *hblank;
+ struct v4l2_ctrl *vblank;
+ struct v4l2_ctrl *test_pattern;
+ } ctrls;
+};
+
+static const struct ov5693_reg ov5693_global_regs[] = {
+ {0x0103, 0x01},
+ {0x3016, 0xf0},
+ {0x3017, 0xf0},
+ {0x3018, 0xf0},
+ {0x3022, 0x01},
+ {0x3028, 0x44},
+ {0x3098, 0x02},
+ {0x3099, 0x19},
+ {0x309a, 0x02},
+ {0x309b, 0x01},
+ {0x309c, 0x00},
+ {0x30a0, 0xd2},
+ {0x30a2, 0x01},
+ {0x30b2, 0x00},
+ {0x30b3, 0x7d},
+ {0x30b4, 0x03},
+ {0x30b5, 0x04},
+ {0x30b6, 0x01},
+ {0x3104, 0x21},
+ {0x3106, 0x00},
+ {0x3406, 0x01},
+ {0x3503, 0x07},
+ {0x350b, 0x40},
+ {0x3601, 0x0a},
+ {0x3602, 0x38},
+ {0x3612, 0x80},
+ {0x3620, 0x54},
+ {0x3621, 0xc7},
+ {0x3622, 0x0f},
+ {0x3625, 0x10},
+ {0x3630, 0x55},
+ {0x3631, 0xf4},
+ {0x3632, 0x00},
+ {0x3633, 0x34},
+ {0x3634, 0x02},
+ {0x364d, 0x0d},
+ {0x364f, 0xdd},
+ {0x3660, 0x04},
+ {0x3662, 0x10},
+ {0x3663, 0xf1},
+ {0x3665, 0x00},
+ {0x3666, 0x20},
+ {0x3667, 0x00},
+ {0x366a, 0x80},
+ {0x3680, 0xe0},
+ {0x3681, 0x00},
+ {0x3700, 0x42},
+ {0x3701, 0x14},
+ {0x3702, 0xa0},
+ {0x3703, 0xd8},
+ {0x3704, 0x78},
+ {0x3705, 0x02},
+ {0x370a, 0x00},
+ {0x370b, 0x20},
+ {0x370c, 0x0c},
+ {0x370d, 0x11},
+ {0x370e, 0x00},
+ {0x370f, 0x40},
+ {0x3710, 0x00},
+ {0x371a, 0x1c},
+ {0x371b, 0x05},
+ {0x371c, 0x01},
+ {0x371e, 0xa1},
+ {0x371f, 0x0c},
+ {0x3721, 0x00},
+ {0x3724, 0x10},
+ {0x3726, 0x00},
+ {0x372a, 0x01},
+ {0x3730, 0x10},
+ {0x3738, 0x22},
+ {0x3739, 0xe5},
+ {0x373a, 0x50},
+ {0x373b, 0x02},
+ {0x373c, 0x41},
+ {0x373f, 0x02},
+ {0x3740, 0x42},
+ {0x3741, 0x02},
+ {0x3742, 0x18},
+ {0x3743, 0x01},
+ {0x3744, 0x02},
+ {0x3747, 0x10},
+ {0x374c, 0x04},
+ {0x3751, 0xf0},
+ {0x3752, 0x00},
+ {0x3753, 0x00},
+ {0x3754, 0xc0},
+ {0x3755, 0x00},
+ {0x3756, 0x1a},
+ {0x3758, 0x00},
+ {0x3759, 0x0f},
+ {0x376b, 0x44},
+ {0x375c, 0x04},
+ {0x3774, 0x10},
+ {0x3776, 0x00},
+ {0x377f, 0x08},
+ {0x3780, 0x22},
+ {0x3781, 0x0c},
+ {0x3784, 0x2c},
+ {0x3785, 0x1e},
+ {0x378f, 0xf5},
+ {0x3791, 0xb0},
+ {0x3795, 0x00},
+ {0x3796, 0x64},
+ {0x3797, 0x11},
+ {0x3798, 0x30},
+ {0x3799, 0x41},
+ {0x379a, 0x07},
+ {0x379b, 0xb0},
+ {0x379c, 0x0c},
+ {0x3a04, 0x06},
+ {0x3a05, 0x14},
+ {0x3e07, 0x20},
+ {0x4000, 0x08},
+ {0x4001, 0x04},
+ {0x4004, 0x08},
+ {0x4006, 0x20},
+ {0x4008, 0x24},
+ {0x4009, 0x10},
+ {0x4058, 0x00},
+ {0x4101, 0xb2},
+ {0x4307, 0x31},
+ {0x4511, 0x05},
+ {0x4512, 0x01},
+ {0x481f, 0x30},
+ {0x4826, 0x2c},
+ {0x4d02, 0xfd},
+ {0x4d03, 0xf5},
+ {0x4d04, 0x0c},
+ {0x4d05, 0xcc},
+ {0x4837, 0x0a},
+ {0x5003, 0x20},
+ {0x5013, 0x00},
+ {0x5842, 0x01},
+ {0x5843, 0x2b},
+ {0x5844, 0x01},
+ {0x5845, 0x92},
+ {0x5846, 0x01},
+ {0x5847, 0x8f},
+ {0x5848, 0x01},
+ {0x5849, 0x0c},
+ {0x5e10, 0x0c},
+ {0x3820, 0x00},
+ {0x3821, 0x1e},
+ {0x5041, 0x14}
+};
+
+static const struct ov5693_reg_list ov5693_global_setting = {
+ .num_regs = ARRAY_SIZE(ov5693_global_regs),
+ .regs = ov5693_global_regs,
+};
+
+#define OV5693_NUM_RESOLUTIONS ARRAY_SIZE(ov5693_resolutions)
+struct ov5693_resolution ov5693_resolutions[] = {
+ {
+ .desc = "ov5693_2592x1944_30fps",
+ .fps = 30,
+
+ .crop_start_x = 16,
+ .offset_x = 0,
+ .output_size_x = 2592,
+ .crop_end_x = 2608,
+ .hts = 2688,
+
+ .crop_start_y = 6,
+ .offset_y = 0,
+ .output_size_y = 1944,
+ .crop_end_y = 1950,
+ .vts = 1984,
+
+ .inc_x_odd = 1,
+ .inc_x_even = 1,
+ .inc_y_odd = 1,
+ .inc_y_even = 1,
+
+ .crop = {
+ .left = 16,
+ .top = 6,
+ .width = 2592,
+ .height = 1944
+ },
+ },
+ {
+ .desc = "ov5693_1920x1080_30fps",
+ .fps = 30,
+
+ .crop_start_x = 16,
+ .offset_x = 0,
+ .output_size_x = 1920,
+ .crop_end_x = 2608,
+ .hts = 2688,
+
+ .crop_start_y = 249,
+ .offset_y = 0,
+ .output_size_y = 1080,
+ .crop_end_y = 1707,
+ .vts = 1984,
+
+ .scale_enable = true,
+
+ .inc_x_odd = 1,
+ .inc_x_even = 1,
+ .inc_y_odd = 1,
+ .inc_y_even = 1,
+
+ .crop = {
+ .left = 16,
+ .top = 249,
+ .width = 2592,
+ .height = 1458
+ },
+ },
+ {
+ .desc = "ov5693_1280x720_60fps",
+ .fps = 60,
+
+ .crop_start_x = 32,
+ .offset_x = 0,
+ .output_size_x = 1280,
+ .crop_end_x = 2592,
+ .binning_x = true,
+ .hts = 2688,
+
+ .crop_start_y = 252,
+ .offset_y = 0,
+ .output_size_y = 720,
+ .crop_end_y = 1692,
+ .binning_y = true,
+ .vts = 992,
+
+ .inc_x_odd = 3,
+ .inc_x_even = 1,
+ .inc_y_odd = 3,
+ .inc_y_even = 1,
+
+ .crop = {
+ .left = 32,
+ .top = 252,
+ .width = 2560,
+ .height = 1440
+ },
+ }
+};
+
+static const s64 link_freq_menu_items[] = {
+ OV5693_LINK_FREQ_400MHZ
+};
+
+static const char * const ov5693_supply_names[] = {
+ "avdd",
+ "dovdd",
+};
+
+static const char * const ov5693_test_pattern_menu[] = {
+ "Disabled",
+ "Random Data",
+ "Colour Bars",
+ "Colour Bars with Rolling Bar"
+};
+
+static const u8 ov5693_test_pattern_bits[] = {
+ 0,
+ OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM,
+ OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS,
+ OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS |
+ OV5693_TEST_PATTERN_ROLLING,
+};
+
+/* I2C I/O Operations */
+
+static int ov5693_read_reg(struct ov5693_device *ov5693, u16 addr, u8 *value)
+{
+ unsigned char data[2] = { addr >> 8, addr & 0xff };
+ struct i2c_client *client = ov5693->client;
+ int ret;
+
+ ret = i2c_master_send(client, data, sizeof(data));
+ if (ret < 0) {
+ dev_dbg(&client->dev, "i2c send error at address 0x%04x\n",
+ addr);
+ return ret;
+ }
+
+ ret = i2c_master_recv(client, value, 1);
+ if (ret < 0) {
+ dev_dbg(&client->dev, "i2c recv error at address 0x%04x\n",
+ addr);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ov5693_write_reg(struct ov5693_device *ov5693, u16 addr, u8 value,
+ int *error)
+{
+ unsigned char data[3] = { addr >> 8, addr & 0xff, value };
+ int ret;
+
+ if (*error < 0)
+ return;
+
+ ret = i2c_master_send(ov5693->client, data, sizeof(data));
+ if (ret < 0) {
+ dev_dbg(ov5693->dev, "i2c send error at address 0x%04x: %d\n",
+ addr, ret);
+ *error = ret;
+ }
+}
+
+static int ov5693_write_reg_array(struct ov5693_device *ov5693,
+ const struct ov5693_reg_list *reglist)
+{
+ unsigned int i;
+ int ret = 0;
+
+ for (i = 0; i < reglist->num_regs; i++)
+ ov5693_write_reg(ov5693, reglist->regs[i].reg,
+ reglist->regs[i].val, &ret);
+
+ return ret;
+}
+
+static int ov5693_update_bits(struct ov5693_device *ov5693, u16 address,
+ u16 mask, u16 bits)
+{
+ u8 value = 0;
+ int ret;
+
+ ret = ov5693_read_reg(ov5693, address, &value);
+ if (ret)
+ return ret;
+
+ value &= ~mask;
+ value |= bits;
+
+ ov5693_write_reg(ov5693, address, value, &ret);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+/* V4L2 Controls Functions */
+
+static int ov5693_flip_vert_configure(struct ov5693_device *ov5693, bool enable)
+{
+ u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN |
+ OV5693_FORMAT1_FLIP_VERT_SENSOR_EN;
+ int ret;
+
+ ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG, bits,
+ enable ? bits : 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int ov5693_flip_horz_configure(struct ov5693_device *ov5693, bool enable)
+{
+ u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN |
+ OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN;
+ int ret;
+
+ ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG, bits,
+ enable ? bits : 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value)
+{
+ u8 exposure_hh = 0, exposure_h = 0, exposure_l = 0;
+ int ret;
+
+ ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG, &exposure_hh);
+ if (ret)
+ return ret;
+
+ ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG, &exposure_h);
+ if (ret)
+ return ret;
+
+ ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG, &exposure_l);
+ if (ret)
+ return ret;
+
+ /* The lowest 4 bits are unsupported fractional bits */
+ *value = ((exposure_hh << 16) | (exposure_h << 8) | exposure_l) >> 4;
+
+ return 0;
+}
+
+static int ov5693_exposure_configure(struct ov5693_device *ov5693, u32 exposure)
+{
+ int ret = 0;
+
+ /* Enable HDR Mode to access "short" exposure */
+
+ ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
+ OV5693_FORMAT2_HDR_EN, OV5693_FORMAT2_HDR_EN);
+ if (ret)
+ return ret;
+
+ ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG,
+ OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
+ ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG,
+ OV5693_EXPOSURE_CTRL_H(exposure), &ret);
+ ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG,
+ OV5693_EXPOSURE_CTRL_L(exposure), &ret);
+ ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_HH_REG,
+ OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
+ ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_H_REG,
+ OV5693_EXPOSURE_CTRL_H(exposure), &ret);
+ ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_L_REG,
+ OV5693_EXPOSURE_CTRL_L(exposure), &ret);
+
+ return ret;
+}
+
+static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain)
+{
+ u8 gain_l = 0, gain_h = 0;
+ int ret;
+
+ ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_H_REG, &gain_h);
+ if (ret)
+ return ret;
+
+ ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_L_REG, &gain_l);
+ if (ret)
+ return ret;
+
+ /* As with exposure, the lowest 4 bits are fractional bits. */
+ *gain = ((gain_h << 8) | gain_l) >> 4;
+
+ return ret;
+}
+
+static int ov5693_digital_gain_configure(struct ov5693_device *ov5693, u32 gain)
+{
+ int ret = 0;
+
+ ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_H_REG,
+ OV5693_MWB_GAIN_H_CTRL(gain), &ret);
+ ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_L_REG,
+ OV5693_MWB_GAIN_L_CTRL(gain), &ret);
+ ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_H_REG,
+ OV5693_MWB_GAIN_H_CTRL(gain), &ret);
+ ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_L_REG,
+ OV5693_MWB_GAIN_L_CTRL(gain), &ret);
+ ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_H_REG,
+ OV5693_MWB_GAIN_H_CTRL(gain), &ret);
+ ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_L_REG,
+ OV5693_MWB_GAIN_L_CTRL(gain), &ret);
+
+ return ret;
+}
+
+static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain)
+{
+ int ret = 0;
+
+ ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_L_REG,
+ OV5693_GAIN_CTRL_L(gain), &ret);
+ ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_H_REG,
+ OV5693_GAIN_CTRL_H(gain), &ret);
+
+ return ret;
+}
+
+static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank)
+{
+ u16 vts = ov5693->mode->output_size_y + vblank;
+ int ret = 0;
+
+ ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
+ OV5693_TIMING_VTS_H(vts), &ret);
+ ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
+ OV5693_TIMING_VTS_L(vts), &ret);
+
+ return ret;
+}
+
+static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx)
+{
+ int ret = 0;
+
+ ov5693_write_reg(ov5693, OV5693_TEST_PATTERN_REG,
+ ov5693_test_pattern_bits[idx], &ret);
+
+ return ret;
+}
+
+static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov5693_device *ov5693 =
+ container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
+ int ret = 0;
+
+ /* If VBLANK is altered we need to update exposure to compensate */
+ if (ctrl->id == V4L2_CID_VBLANK) {
+ int exposure_max;
+
+ exposure_max = ov5693->mode->output_size_y + ctrl->val -
+ OV5693_INTEGRATION_TIME_MARGIN;
+ __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
+ ov5693->ctrls.exposure->minimum,
+ exposure_max, ov5693->ctrls.exposure->step,
+ ov5693->ctrls.exposure->val < exposure_max ?
+ ov5693->ctrls.exposure->val : exposure_max);
+ }
+
+ /* Only apply changes to the controls if the device is powered up */
+ if (!pm_runtime_get_if_in_use(ov5693->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE:
+ ret = ov5693_exposure_configure(ov5693, ctrl->val);
+ break;
+ case V4L2_CID_ANALOGUE_GAIN:
+ ret = ov5693_analog_gain_configure(ov5693, ctrl->val);
+ break;
+ case V4L2_CID_DIGITAL_GAIN:
+ ret = ov5693_digital_gain_configure(ov5693, ctrl->val);
+ break;
+ case V4L2_CID_HFLIP:
+ ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val);
+ break;
+ case V4L2_CID_VFLIP:
+ ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val);
+ break;
+ case V4L2_CID_VBLANK:
+ ret = ov5693_vts_configure(ov5693, ctrl->val);
+ break;
+ case V4L2_CID_TEST_PATTERN:
+ ret = ov5693_test_pattern_configure(ov5693, ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ pm_runtime_put(ov5693->dev);
+
+ return ret;
+}
+
+static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov5693_device *ov5693 =
+ container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE_ABSOLUTE:
+ return ov5693_get_exposure(ov5693, &ctrl->val);
+ case V4L2_CID_AUTOGAIN:
+ return ov5693_get_gain(ov5693, &ctrl->val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct v4l2_ctrl_ops ov5693_ctrl_ops = {
+ .s_ctrl = ov5693_s_ctrl,
+ .g_volatile_ctrl = ov5693_g_volatile_ctrl
+};
+
+/* System Control Functions */
+
+static int ov5693_mode_configure(struct ov5693_device *ov5693)
+{
+ const struct ov5693_resolution *mode = ov5693->mode;
+ int ret = 0;
+
+ /* Crop Start X */
+ ov5693_write_reg(ov5693, OV5693_CROP_START_X_H_REG,
+ OV5693_CROP_START_X_H(mode->crop_start_x), &ret);
+ ov5693_write_reg(ov5693, OV5693_CROP_START_X_L_REG,
+ OV5693_CROP_START_X_L(mode->crop_start_x), &ret);
+
+ /* Offset X */
+ ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_H_REG,
+ OV5693_OFFSET_START_X_H(mode->offset_x), &ret);
+ ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_L_REG,
+ OV5693_OFFSET_START_X_L(mode->offset_x), &ret);
+
+ /* Output Size X */
+ ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_H_REG,
+ OV5693_OUTPUT_SIZE_X_H(mode->output_size_x), &ret);
+ ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_L_REG,
+ OV5693_OUTPUT_SIZE_X_L(mode->output_size_x), &ret);
+
+ /* Crop End X */
+ ov5693_write_reg(ov5693, OV5693_CROP_END_X_H_REG,
+ OV5693_CROP_END_X_H(mode->crop_end_x), &ret);
+ ov5693_write_reg(ov5693, OV5693_CROP_END_X_L_REG,
+ OV5693_CROP_END_X_L(mode->crop_end_x), &ret);
+
+ /* Horizontal Total Size */
+ ov5693_write_reg(ov5693, OV5693_TIMING_HTS_H_REG,
+ OV5693_TIMING_HTS_H(mode->hts), &ret);
+ ov5693_write_reg(ov5693, OV5693_TIMING_HTS_L_REG,
+ OV5693_TIMING_HTS_L(mode->hts), &ret);
+
+ /* Crop Start Y */
+ ov5693_write_reg(ov5693, OV5693_CROP_START_Y_H_REG,
+ OV5693_CROP_START_Y_H(mode->crop_start_y), &ret);
+ ov5693_write_reg(ov5693, OV5693_CROP_START_Y_L_REG,
+ OV5693_CROP_START_Y_L(mode->crop_start_y), &ret);
+
+ /* Offset Y */
+ ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_H_REG,
+ OV5693_OFFSET_START_Y_H(mode->offset_y), &ret);
+ ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_L_REG,
+ OV5693_OFFSET_START_Y_L(mode->offset_y), &ret);
+
+ /* Output Size Y */
+ ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_H_REG,
+ OV5693_OUTPUT_SIZE_Y_H(mode->output_size_y), &ret);
+ ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_L_REG,
+ OV5693_OUTPUT_SIZE_Y_L(mode->output_size_y), &ret);
+
+ /* Crop End Y */
+ ov5693_write_reg(ov5693, OV5693_CROP_END_Y_H_REG,
+ OV5693_CROP_END_Y_H(mode->crop_end_y), &ret);
+ ov5693_write_reg(ov5693, OV5693_CROP_END_Y_L_REG,
+ OV5693_CROP_END_Y_L(mode->crop_end_y), &ret);
+
+ /* Vertical Total Size */
+ ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
+ OV5693_TIMING_VTS_H(mode->vts), &ret);
+ ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
+ OV5693_TIMING_VTS_L(mode->vts), &ret);
+
+ /* Subsample X increase */
+ ov5693_write_reg(ov5693, OV5693_SUB_INC_X_REG,
+ ((mode->inc_x_odd << 4) & 0xf0) |
+ (mode->inc_x_even & 0x0f), &ret);
+ /* Subsample Y increase */
+ ov5693_write_reg(ov5693, OV5693_SUB_INC_Y_REG,
+ ((mode->inc_y_odd << 4) & 0xf0) |
+ (mode->inc_y_even & 0x0f), &ret);
+
+ if (ret)
+ return ret;
+
+ /* Binning */
+ ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG,
+ OV5693_FORMAT1_VBIN_EN,
+ mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0);
+ if (ret)
+ return ret;
+
+ ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
+ OV5693_FORMAT2_HBIN_EN,
+ mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0);
+ if (ret)
+ return ret;
+
+ /* Scaler */
+ ret = ov5693_update_bits(ov5693, OV5693_ISP_CTRL2_REG,
+ OV5693_ISP_SCALE_ENABLE,
+ mode->scale_enable ? OV5693_ISP_SCALE_ENABLE : 0);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+static int ov5693_sw_standby(struct ov5693_device *ov5693, bool standby)
+{
+ int ret = 0;
+
+ ov5693_write_reg(ov5693, OV5693_SW_STREAM_REG,
+ standby ? OV5693_STOP_STREAMING : OV5693_START_STREAMING,
+ &ret);
+
+ return ret;
+}
+
+static int ov5693_sw_reset(struct ov5693_device *ov5693)
+{
+ int ret = 0;
+
+ ov5693_write_reg(ov5693, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret);
+
+ return ret;
+}
+
+static int ov5693_sensor_init(struct ov5693_device *ov5693)
+{
+ int ret = 0;
+
+ ret = ov5693_sw_reset(ov5693);
+ if (ret) {
+ dev_err(ov5693->dev, "%s software reset error\n", __func__);
+ return ret;
+ }
+
+ ret = ov5693_write_reg_array(ov5693, &ov5693_global_setting);
+ if (ret) {
+ dev_err(ov5693->dev, "%s global settings error\n", __func__);
+ return ret;
+ }
+
+ ret = ov5693_mode_configure(ov5693);
+ if (ret) {
+ dev_err(ov5693->dev, "%s mode configure error\n", __func__);
+ return ret;
+ }
+
+ ret = ov5693_sw_standby(ov5693, true);
+ if (ret)
+ dev_err(ov5693->dev, "%s software standby error\n", __func__);
+
+ return ret;
+}
+
+static void ov5693_sensor_powerdown(struct ov5693_device *ov5693)
+{
+ gpiod_set_value_cansleep(ov5693->reset, 1);
+ gpiod_set_value_cansleep(ov5693->powerdown, 1);
+
+ regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies);
+
+ clk_disable_unprepare(ov5693->clk);
+}
+
+static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
+{
+ int ret = 0;
+
+ gpiod_set_value_cansleep(ov5693->reset, 1);
+ gpiod_set_value_cansleep(ov5693->powerdown, 1);
+
+ ret = clk_prepare_enable(ov5693->clk);
+ if (ret) {
+ dev_err(ov5693->dev, "Failed to enable clk\n");
+ goto fail_power;
+ }
+
+ ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies);
+ if (ret) {
+ dev_err(ov5693->dev, "Failed to enable regulators\n");
+ goto fail_power;
+ }
+
+ gpiod_set_value_cansleep(ov5693->reset, 0);
+ gpiod_set_value_cansleep(ov5693->powerdown, 0);
+
+ usleep_range(20000, 25000);
+
+ return 0;
+
+fail_power:
+ ov5693_sensor_powerdown(ov5693);
+ return ret;
+}
+
+static int __maybe_unused ov5693_sensor_suspend(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+ int ret;
+
+ mutex_lock(&ov5693->lock);
+
+ if (ov5693->streaming) {
+ ret = ov5693_sw_standby(ov5693, true);
+ if (ret)
+ goto out_unlock;
+ }
+
+ ov5693_sensor_powerdown(ov5693);
+
+out_unlock:
+ mutex_unlock(&ov5693->lock);
+ return ret;
+}
+
+static int __maybe_unused ov5693_sensor_resume(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+ int ret;
+
+ mutex_lock(&ov5693->lock);
+
+ ret = ov5693_sensor_powerup(ov5693);
+ if (ret)
+ goto out_unlock;
+
+ ret = ov5693_sensor_init(ov5693);
+ if (ret) {
+ dev_err(dev, "ov5693 sensor init failure\n");
+ goto err_power;
+ }
+
+ if (ov5693->streaming) {
+ ret = ov5693_sw_standby(ov5693, false);
+ if (ret)
+ goto err_power;
+ }
+
+ goto out_unlock;
+
+err_power:
+ ov5693_sensor_powerdown(ov5693);
+out_unlock:
+ mutex_unlock(&ov5693->lock);
+ return ret;
+}
+
+static int ov5693_detect(struct ov5693_device *ov5693)
+{
+ u8 id_l = 0, id_h = 0;
+ u16 id = 0;
+ int ret;
+
+ ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_H, &id_h);
+ if (ret)
+ return ret;
+
+ ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_L, &id_l);
+ if (ret)
+ return ret;
+
+ id = (id_h << 8) | id_l;
+
+ if (id != OV5693_CHIP_ID) {
+ dev_err(ov5693->dev, "sensor ID mismatch. Found 0x%04x\n", id);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+/* V4L2 Framework callbacks */
+
+static int ov5693_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+ const struct ov5693_resolution *mode;
+ int exposure_max;
+ int ret = 0;
+ int hblank;
+
+ if (format->pad)
+ return -EINVAL;
+
+ mutex_lock(&ov5693->lock);
+
+ mode = v4l2_find_nearest_size(ov5693_resolutions,
+ OV5693_NUM_RESOLUTIONS, output_size_x,
+ output_size_y, format->format.width,
+ format->format.height);
+
+ if (!mode)
+ return -EINVAL;
+
+ format->format.width = mode->output_size_x;
+ format->format.height = mode->output_size_y;
+ format->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ *v4l2_subdev_get_try_format(sd, cfg, format->pad) = format->format;
+ goto mutex_unlock;
+ }
+
+ ov5693->mode = mode;
+
+ /* Update limits and set FPS to default */
+ __v4l2_ctrl_modify_range(ov5693->ctrls.vblank,
+ OV5693_TIMING_MIN_VTS,
+ OV5693_TIMING_MAX_VTS - mode->output_size_y,
+ 1, mode->vts - mode->output_size_y);
+ __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank,
+ mode->vts - mode->output_size_y);
+
+ hblank = mode->hts - mode->output_size_x;
+ __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1,
+ hblank);
+
+ exposure_max = mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
+ __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
+ ov5693->ctrls.exposure->minimum, exposure_max,
+ ov5693->ctrls.exposure->step,
+ ov5693->ctrls.exposure->val < exposure_max ?
+ ov5693->ctrls.exposure->val : exposure_max);
+
+mutex_unlock:
+ mutex_unlock(&ov5693->lock);
+ return ret;
+}
+
+static const struct v4l2_rect *
+__ov5693_get_pad_crop(struct ov5693_device *ov5693, struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_crop(&ov5693->sd, cfg, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &ov5693->mode->crop;
+ }
+
+ return NULL;
+}
+
+static int ov5693_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *sel)
+{
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP:
+ mutex_lock(&ov5693->lock);
+ sel->r = *__ov5693_get_pad_crop(ov5693, cfg, sel->pad, sel->which);
+ mutex_unlock(&ov5693->lock);
+ break;
+ case V4L2_SEL_TGT_NATIVE_SIZE:
+ sel->r.top = 0;
+ sel->r.left = 0;
+ sel->r.width = OV5693_NATIVE_WIDTH;
+ sel->r.height = OV5693_NATIVE_HEIGHT;
+ break;
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ sel->r.top = OV5693_ACTIVE_START_TOP;
+ sel->r.left = OV5693_ACTIVE_START_LEFT;
+ sel->r.width = OV5693_ACTIVE_WIDTH;
+ sel->r.height = OV5693_ACTIVE_HEIGHT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int ov5693_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct v4l2_mbus_framefmt *fmt = &format->format;
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+
+ if (format->pad)
+ return -EINVAL;
+
+ if (!fmt)
+ return -EINVAL;
+
+ fmt->width = ov5693->mode->output_size_x;
+ fmt->height = ov5693->mode->output_size_y;
+ fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+
+ return 0;
+}
+
+static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+ int ret;
+
+ if (enable) {
+ ret = pm_runtime_get_sync(ov5693->dev);
+ if (ret < 0)
+ goto err_power_down;
+ }
+
+ ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler);
+ if (ret)
+ goto err_power_down;
+
+ mutex_lock(&ov5693->lock);
+ ret = ov5693_sw_standby(ov5693, !enable);
+ mutex_unlock(&ov5693->lock);
+
+ if (ret)
+ goto err_power_down;
+ ov5693->streaming = !!enable;
+
+ if (!enable)
+ pm_runtime_put(ov5693->dev);
+
+ return 0;
+err_power_down:
+ pm_runtime_put_noidle(ov5693->dev);
+ return ret;
+}
+
+static int ov5693_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *interval)
+{
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+
+ interval->interval.numerator = 1;
+ interval->interval.denominator = ov5693->mode->fps;
+
+ return 0;
+}
+
+static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index >= OV5693_NUM_MBUS_FMTS)
+ return -EINVAL;
+
+ code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ return 0;
+}
+
+static int ov5693_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ int index = fse->index;
+
+ if (index >= OV5693_NUM_RESOLUTIONS)
+ return -EINVAL;
+
+ fse->min_width = ov5693_resolutions[index].output_size_x;
+ fse->min_height = ov5693_resolutions[index].output_size_y;
+ fse->max_width = ov5693_resolutions[index].output_size_x;
+ fse->max_height = ov5693_resolutions[index].output_size_y;
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops ov5693_video_ops = {
+ .s_stream = ov5693_s_stream,
+ .g_frame_interval = ov5693_g_frame_interval,
+};
+
+static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
+ .enum_mbus_code = ov5693_enum_mbus_code,
+ .enum_frame_size = ov5693_enum_frame_size,
+ .get_fmt = ov5693_get_fmt,
+ .set_fmt = ov5693_set_fmt,
+ .get_selection = ov5693_get_selection,
+};
+
+static const struct v4l2_subdev_ops ov5693_ops = {
+ .video = &ov5693_video_ops,
+ .pad = &ov5693_pad_ops,
+};
+
+/* Sensor and Driver Configuration Functions */
+
+static int ov5693_init_controls(struct ov5693_device *ov5693)
+{
+ const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops;
+ struct v4l2_fwnode_device_properties props;
+ int vblank_max, vblank_def;
+ int exposure_max;
+ int hblank;
+ int ret;
+
+ ret = v4l2_ctrl_handler_init(&ov5693->ctrls.handler, 14);
+ if (ret)
+ return ret;
+
+ /* link freq */
+ ov5693->ctrls.link_freq = v4l2_ctrl_new_int_menu(&ov5693->ctrls.handler,
+ NULL, V4L2_CID_LINK_FREQ,
+ 0, 0, link_freq_menu_items);
+ if (ov5693->ctrls.link_freq)
+ ov5693->ctrls.link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ /* pixel rate */
+ ov5693->ctrls.pixel_rate = v4l2_ctrl_new_std(&ov5693->ctrls.handler, NULL,
+ V4L2_CID_PIXEL_RATE, 0,
+ OV5693_PIXEL_RATE, 1,
+ OV5693_PIXEL_RATE);
+
+ /* Exposure */
+ exposure_max = ov5693->mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
+ ov5693->ctrls.exposure = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
+ V4L2_CID_EXPOSURE,
+ OV5693_EXPOSURE_MIN,
+ exposure_max,
+ OV5693_EXPOSURE_STEP,
+ exposure_max);
+
+ /* Gain */
+ ov5693->ctrls.analogue_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler,
+ ops, V4L2_CID_ANALOGUE_GAIN,
+ OV5693_GAIN_MIN,
+ OV5693_GAIN_MAX,
+ OV5693_GAIN_STEP,
+ OV5693_GAIN_DEF);
+ ov5693->ctrls.digital_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
+ V4L2_CID_DIGITAL_GAIN,
+ OV5693_DIGITAL_GAIN_MIN,
+ OV5693_DIGITAL_GAIN_MAX,
+ OV5693_DIGITAL_GAIN_STEP,
+ OV5693_DIGITAL_GAIN_DEF);
+
+ /* Flip */
+ ov5693->ctrls.hflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ ov5693->ctrls.vflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+
+ hblank = ov5693->mode->hts - ov5693->mode->output_size_x;
+ ov5693->ctrls.hblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
+ V4L2_CID_HBLANK, hblank, hblank,
+ 1, hblank);
+ if (ov5693->ctrls.hblank)
+ ov5693->ctrls.hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode->output_size_y;
+ vblank_def = ov5693->mode->vts - ov5693->mode->output_size_y;
+ ov5693->ctrls.vblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
+ V4L2_CID_VBLANK,
+ OV5693_TIMING_MIN_VTS,
+ vblank_max, 1, vblank_def);
+
+ ov5693->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items(
+ &ov5693->ctrls.handler, ops, V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(ov5693_test_pattern_menu) - 1,
+ 0, 0, ov5693_test_pattern_menu);
+
+ if (ov5693->ctrls.handler.error) {
+ dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n");
+ ret = ov5693->ctrls.handler.error;
+ goto err_free_handler;
+ }
+
+ /* set properties from fwnode (e.g. rotation, orientation) */
+ ret = v4l2_fwnode_device_parse(ov5693->dev, &props);
+ if (ret)
+ goto err_free_handler;
+
+ ret = v4l2_ctrl_new_fwnode_properties(&ov5693->ctrls.handler, ops,
+ &props);
+ if (ret)
+ goto err_free_handler;
+
+ /* Use same lock for controls as for everything else. */
+ ov5693->ctrls.handler.lock = &ov5693->lock;
+ ov5693->sd.ctrl_handler = &ov5693->ctrls.handler;
+
+ return 0;
+
+err_free_handler:
+ v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
+ return ret;
+}
+
+static int ov5693_configure_gpios(struct ov5693_device *ov5693)
+{
+ ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(ov5693->reset)) {
+ dev_err(ov5693->dev, "Error fetching reset GPIO\n");
+ return PTR_ERR(ov5693->reset);
+ }
+
+ ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(ov5693->powerdown)) {
+ dev_err(ov5693->dev, "Error fetching powerdown GPIO\n");
+ return PTR_ERR(ov5693->powerdown);
+ }
+
+ return 0;
+}
+
+static int ov5693_get_regulators(struct ov5693_device *ov5693)
+{
+ unsigned int i;
+
+ for (i = 0; i < OV5693_NUM_SUPPLIES; i++)
+ ov5693->supplies[i].supply = ov5693_supply_names[i];
+
+ return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES,
+ ov5693->supplies);
+}
+
+static int ov5693_probe(struct i2c_client *client)
+{
+ struct fwnode_handle *fwnode = dev_fwnode(&client->dev);
+ struct fwnode_handle *endpoint;
+ struct ov5693_device *ov5693;
+ u32 clk_rate;
+ int ret = 0;
+
+ endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
+ if (!endpoint && !IS_ERR_OR_NULL(fwnode->secondary))
+ endpoint = fwnode_graph_get_next_endpoint(fwnode->secondary, NULL);
+ if (!endpoint)
+ return -EPROBE_DEFER;
+
+ ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
+ if (!ov5693)
+ return -ENOMEM;
+
+ ov5693->client = client;
+ ov5693->dev = &client->dev;
+
+ mutex_init(&ov5693->lock);
+
+ v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
+
+ ov5693->clk = devm_clk_get(&client->dev, "xvclk");
+ if (IS_ERR(ov5693->clk)) {
+ dev_err(&client->dev, "Error getting clock\n");
+ return PTR_ERR(ov5693->clk);
+ }
+
+ clk_rate = clk_get_rate(ov5693->clk);
+ if (clk_rate != OV5693_XVCLK_FREQ) {
+ dev_err(&client->dev, "Unsupported clk freq %u, expected %u\n",
+ clk_rate, OV5693_XVCLK_FREQ);
+ return -EINVAL;
+ }
+
+ ret = ov5693_configure_gpios(ov5693);
+ if (ret)
+ return ret;
+
+ ret = ov5693_get_regulators(ov5693);
+ if (ret) {
+ dev_err(&client->dev, "Error fetching regulators\n");
+ return ret;
+ }
+
+ ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
+ ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ov5693->mode = &ov5693_resolutions[OV5693_NUM_RESOLUTIONS - 1];
+
+ ret = ov5693_init_controls(ov5693);
+ if (ret)
+ return ret;
+
+ ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad);
+ if (ret)
+ goto err_ctrl_handler_free;
+
+ /*
+ * We need the driver to work in the event that pm runtime is disable in
+ * the kernel, so power up and verify the chip now. In the event that
+ * runtime pm is disabled this will leave the chip on, so that streaming
+ * will work.
+ */
+
+ ret = ov5693_sensor_powerup(ov5693);
+ if (ret)
+ goto err_media_entity_cleanup;
+
+ ret = ov5693_detect(ov5693);
+ if (ret)
+ goto err_powerdown;
+
+ pm_runtime_set_active(&client->dev);
+ pm_runtime_get_noresume(&client->dev);
+ pm_runtime_enable(&client->dev);
+
+ ret = v4l2_async_register_subdev_sensor_common(&ov5693->sd);
+ if (ret) {
+ dev_err(&client->dev, "failed to register V4L2 subdev: %d",
+ ret);
+ goto err_pm_runtime;
+ }
+
+ pm_runtime_set_autosuspend_delay(&client->dev, 1000);
+ pm_runtime_use_autosuspend(&client->dev);
+ pm_runtime_put_autosuspend(&client->dev);
+
+ return ret;
+
+err_pm_runtime:
+ pm_runtime_disable(&client->dev);
+ pm_runtime_put_noidle(&client->dev);
+err_powerdown:
+ ov5693_sensor_powerdown(ov5693);
+err_media_entity_cleanup:
+ media_entity_cleanup(&ov5693->sd.entity);
+err_ctrl_handler_free:
+ v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
+
+ return ret;
+}
+
+static int ov5693_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
+
+ v4l2_async_unregister_subdev(sd);
+ media_entity_cleanup(&ov5693->sd.entity);
+ v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
+ mutex_destroy(&ov5693->lock);
+
+ /*
+ * Disable runtime PM. In case runtime PM is disabled in the kernel,
+ * make sure to turn power off manually.
+ */
+ pm_runtime_disable(&client->dev);
+ if (!pm_runtime_status_suspended(&client->dev))
+ ov5693_sensor_powerdown(ov5693);
+ pm_runtime_set_suspended(&client->dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops ov5693_pm_ops = {
+ SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL)
+};
+
+static const struct acpi_device_id ov5693_acpi_match[] = {
+ {"INT33BE"},
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
+
+static struct i2c_driver ov5693_driver = {
+ .driver = {
+ .name = "ov5693",
+ .acpi_match_table = ov5693_acpi_match,
+ .pm = &ov5693_pm_ops,
+ },
+ .probe_new = ov5693_probe,
+ .remove = ov5693_remove,
+};
+module_i2c_driver(ov5693_driver);
+
+MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
+MODULE_LICENSE("GPL");
--
2.25.1
Hi Daniel,
On Fri, Mar 12, 2021 at 10:32:39AM +0000, Daniel Scally wrote:
> The OV5693 is a 5 Mpx CMOS image sensor, connected via MIPI CSI-2. The
> chip is capable of a single lane configuration, but currently only two
> lanes are supported.
>
> Most of the sensor's features are supported, with the main exception
> being the lens correction algorithm.
>
> The driver provides all mandatory, optional and recommended V4L2 controls
> for maximum compatibility with libcamera.
>
> Signed-off-by: Daniel Scally <[email protected]>
> ---
> MAINTAINERS | 7 +
> drivers/media/i2c/Kconfig | 11 +
> drivers/media/i2c/Makefile | 1 +
> drivers/media/i2c/ov5693.c | 1585 ++++++++++++++++++++++++++++++++++++
> 4 files changed, 1604 insertions(+)
> create mode 100644 drivers/media/i2c/ov5693.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index cf44b3e77b90..34311d55b189 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -13140,6 +13140,13 @@ S: Maintained
> T: git git://linuxtv.org/media_tree.git
> F: drivers/media/i2c/ov5675.c
>
> +OMNIVISION OV5693 SENSOR DRIVER
> +M: Daniel Scally <[email protected]>
> +L: [email protected]
> +S: Maintained
> +T: git git://linuxtv.org/media_tree.git
> +F: drivers/media/i2c/ov5693.c
> +
> OMNIVISION OV5695 SENSOR DRIVER
> M: Shunqian Zheng <[email protected]>
> L: [email protected]
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 4c1ae687ab10..4da2278ec84c 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -985,6 +985,17 @@ config VIDEO_OV5675
> To compile this driver as a module, choose M here: the
> module will be called ov5675.
>
> +config VIDEO_OV5693
> + tristate "OmniVision OV5693 sensor support"
> + depends on I2C && VIDEO_V4L2
> + select V4L2_FWNODE
> + help
> + This is a Video4Linux2 sensor driver for the OmniVision
> + OV5693 camera.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called ov5693.
> +
> config VIDEO_OV5695
> tristate "OmniVision OV5695 sensor support"
> depends on I2C && VIDEO_V4L2
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index 65cfc94d25b6..7df680e110c9 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -75,6 +75,7 @@ obj-$(CONFIG_VIDEO_OV5647) += ov5647.o
> obj-$(CONFIG_VIDEO_OV5648) += ov5648.o
> obj-$(CONFIG_VIDEO_OV5670) += ov5670.o
> obj-$(CONFIG_VIDEO_OV5675) += ov5675.o
> +obj-$(CONFIG_VIDEO_OV5693) += ov5693.o
> obj-$(CONFIG_VIDEO_OV5695) += ov5695.o
> obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
> obj-$(CONFIG_VIDEO_OV7251) += ov7251.o
> diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
> new file mode 100644
> index 000000000000..0460371164ea
> --- /dev/null
> +++ b/drivers/media/i2c/ov5693.c
> @@ -0,0 +1,1585 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
> + *
> + * Adapted from the atomisp-ov5693 driver, with contributions from:
> + *
> + * Daniel Scally
> + * Jean-Michel Hautbois
> + * Fabian Wuthrich
> + * Tsuchiya Yuto
> + * Jordan Hand
> + * Jake Day
> + */
> +
> +#include <linux/acpi.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/device.h>
> +#include <linux/i2c.h>
> +#include <linux/module.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/slab.h>
> +#include <linux/types.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-ctrls.h>
> +
> +/* System Control */
> +#define OV5693_SW_RESET_REG 0x0103
> +#define OV5693_SW_STREAM_REG 0x0100
> +#define OV5693_START_STREAMING 0x01
> +#define OV5693_STOP_STREAMING 0x00
> +#define OV5693_SW_RESET 0x01
> +
> +#define OV5693_REG_CHIP_ID_H 0x300A
> +#define OV5693_REG_CHIP_ID_L 0x300B
Please use lower case letters in hex identifiers
> +/* Yes, this is right. The datasheet for the OV5693 gives its ID as 0x5690 */
> +#define OV5693_CHIP_ID 0x5690
> +
> +/* Exposure */
> +#define OV5693_EXPOSURE_L_CTRL_HH_REG 0x3500
> +#define OV5693_EXPOSURE_L_CTRL_H_REG 0x3501
> +#define OV5693_EXPOSURE_L_CTRL_L_REG 0x3502
> +#define OV5693_EXPOSURE_S_CTRL_HH_REG 0x3506
> +#define OV5693_EXPOSURE_S_CTRL_H_REG 0x3507
> +#define OV5693_EXPOSURE_S_CTRL_L_REG 0x3508
> +#define OV5693_EXPOSURE_CTRL_HH(v) (((v) & GENMASK(14, 12)) >> 12)
> +#define OV5693_EXPOSURE_CTRL_H(v) (((v) & GENMASK(11, 4)) >> 4)
> +#define OV5693_EXPOSURE_CTRL_L(v) (((v) & GENMASK(3, 0)) << 4)
> +#define OV5693_INTEGRATION_TIME_MARGIN 8
> +#define OV5693_EXPOSURE_MIN 1
> +#define OV5693_EXPOSURE_STEP 1
> +
> +/* Analogue Gain */
> +#define OV5693_GAIN_CTRL_H_REG 0x350A
> +#define OV5693_GAIN_CTRL_H(v) (((v) >> 4) & GENMASK(2, 0))
> +#define OV5693_GAIN_CTRL_L_REG 0x350B
> +#define OV5693_GAIN_CTRL_L(v) (((v) << 4) & GENMASK(7, 4))
> +#define OV5693_GAIN_MIN 1
> +#define OV5693_GAIN_MAX 127
> +#define OV5693_GAIN_DEF 8
> +#define OV5693_GAIN_STEP 1
> +
> +/* Digital Gain */
> +#define OV5693_MWB_RED_GAIN_H_REG 0x3400
> +#define OV5693_MWB_RED_GAIN_L_REG 0x3401
> +#define OV5693_MWB_GREEN_GAIN_H_REG 0x3402
> +#define OV5693_MWB_GREEN_GAIN_L_REG 0x3403
> +#define OV5693_MWB_BLUE_GAIN_H_REG 0x3404
> +#define OV5693_MWB_BLUE_GAIN_L_REG 0x3405
> +#define OV5693_MWB_GAIN_H_CTRL(v) (((v) >> 8) & GENMASK(3, 0))
> +#define OV5693_MWB_GAIN_L_CTRL(v) ((v) & GENMASK(7, 0))
> +#define OV5693_MWB_GAIN_MAX 0x0fff
> +#define OV5693_DIGITAL_GAIN_MIN 1
> +#define OV5693_DIGITAL_GAIN_MAX 4095
> +#define OV5693_DIGITAL_GAIN_DEF 1024
> +#define OV5693_DIGITAL_GAIN_STEP 1
> +
> +/* Timing and Format */
> +#define OV5693_CROP_START_X_H_REG 0x3800
> +#define OV5693_CROP_START_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
> +#define OV5693_CROP_START_X_L_REG 0x3801
> +#define OV5693_CROP_START_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_CROP_START_Y_H_REG 0x3802
> +#define OV5693_CROP_START_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
> +#define OV5693_CROP_START_Y_L_REG 0x3803
> +#define OV5693_CROP_START_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_CROP_END_X_H_REG 0x3804
> +#define OV5693_CROP_END_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
> +#define OV5693_CROP_END_X_L_REG 0x3805
> +#define OV5693_CROP_END_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_CROP_END_Y_H_REG 0x3806
> +#define OV5693_CROP_END_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
> +#define OV5693_CROP_END_Y_L_REG 0x3807
> +#define OV5693_CROP_END_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_OUTPUT_SIZE_X_H_REG 0x3808
> +#define OV5693_OUTPUT_SIZE_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OUTPUT_SIZE_X_L_REG 0x3809
> +#define OV5693_OUTPUT_SIZE_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_OUTPUT_SIZE_Y_H_REG 0x380a
> +#define OV5693_OUTPUT_SIZE_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OUTPUT_SIZE_Y_L_REG 0x380b
> +#define OV5693_OUTPUT_SIZE_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_TIMING_HTS_H_REG 0x380c
> +#define OV5693_TIMING_HTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_TIMING_HTS_L_REG 0x380d
> +#define OV5693_TIMING_HTS_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_TIMING_VTS_H_REG 0x380e
> +#define OV5693_TIMING_VTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_TIMING_VTS_L_REG 0x380f
> +#define OV5693_TIMING_VTS_L(v) ((v) & GENMASK(7, 0))
> +#define OV5693_TIMING_MAX_VTS 0xffff
> +#define OV5693_TIMING_MIN_VTS 0x04
> +
> +#define OV5693_OFFSET_START_X_H_REG 0x3810
> +#define OV5693_OFFSET_START_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OFFSET_START_X_L_REG 0x3811
> +#define OV5693_OFFSET_START_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_OFFSET_START_Y_H_REG 0x3812
> +#define OV5693_OFFSET_START_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OFFSET_START_Y_L_REG 0x3813
> +#define OV5693_OFFSET_START_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_SUB_INC_X_REG 0x3814
> +#define OV5693_SUB_INC_Y_REG 0x3815
> +
> +#define OV5693_FORMAT1_REG 0x3820
> +#define OV5693_FORMAT1_FLIP_VERT_ISP_EN BIT(2)
> +#define OV5693_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1)
> +#define OV5693_FORMAT1_VBIN_EN BIT(0)
> +#define OV5693_FORMAT2_REG 0x3821
> +#define OV5693_FORMAT2_HDR_EN BIT(7)
> +#define OV5693_FORMAT2_FLIP_HORZ_ISP_EN BIT(2)
> +#define OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1)
> +#define OV5693_FORMAT2_HBIN_EN BIT(0)
> +
> +#define OV5693_ISP_CTRL2_REG 0x5002
> +#define OV5693_ISP_SCALE_ENABLE BIT(7)
> +
> +/* Pixel Array */
> +#define OV5693_NATIVE_WIDTH 2624U
> +#define OV5693_NATIVE_HEIGHT 1956U
> +#define OV5693_ACTIVE_START_LEFT 16U
> +#define OV5693_ACTIVE_START_TOP 6U
> +#define OV5693_ACTIVE_WIDTH 2592U
> +#define OV5693_ACTIVE_HEIGHT 1944U
> +
> +/* Test Pattern */
> +#define OV5693_TEST_PATTERN_REG 0x5e00
> +#define OV5693_TEST_PATTERN_ENABLE BIT(7)
> +#define OV5693_TEST_PATTERN_ROLLING BIT(6)
> +#define OV5693_TEST_PATTERN_RANDOM 0x01
> +#define OV5693_TEST_PATTERN_BARS 0x00
> +
> +/* System Frequencies */
> +#define OV5693_XVCLK_FREQ 19200000
> +#define OV5693_LINK_FREQ_400MHZ 400000000
> +#define OV5693_PIXEL_RATE 160000000
> +
> +/* Miscellaneous */
> +#define OV5693_NUM_MBUS_FMTS 1
Nit: Only used in one place, maybe could be removed
> +#define OV5693_NUM_SUPPLIES 2
> +
> +#define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd)
> +
> +struct ov5693_reg {
> + u16 reg;
> + u8 val;
> +};
> +
> +struct ov5693_reg_list {
> + u32 num_regs;
> + const struct ov5693_reg *regs;
> +};
> +
> +struct ov5693_resolution {
> + char *desc;
> + int fps;
> +
> + struct v4l2_rect crop;
> +
> + unsigned int crop_start_x;
> + unsigned int offset_x;
> + unsigned int output_size_x;
> + unsigned int crop_end_x;
> + unsigned int hts;
> +
> + unsigned int crop_start_y;
> + unsigned int offset_y;
> + unsigned int output_size_y;
> + unsigned int crop_end_y;
> + unsigned int vts;
> +
> + unsigned int inc_x_odd;
> + unsigned int inc_x_even;
> + unsigned int inc_y_odd;
> + unsigned int inc_y_even;
> +
> + bool binning_x;
> + bool binning_y;
> + bool scale_enable;
> +};
> +
> +struct ov5693_device {
> + struct i2c_client *client;
> + struct device *dev;
> +
> + /* Protect against concurrent changes to controls */
> + struct mutex lock;
> +
> + struct gpio_desc *reset;
> + struct gpio_desc *powerdown;
> + struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES];
> + struct clk *clk;
> +
> + const struct ov5693_resolution *mode;
> + bool streaming;
> +
> + struct v4l2_subdev sd;
> + struct media_pad pad;
> +
> + struct ov5693_v4l2_ctrls {
> + struct v4l2_ctrl_handler handler;
> + struct v4l2_ctrl *link_freq;
> + struct v4l2_ctrl *pixel_rate;
> + struct v4l2_ctrl *exposure;
> + struct v4l2_ctrl *analogue_gain;
> + struct v4l2_ctrl *digital_gain;
> + struct v4l2_ctrl *hflip;
> + struct v4l2_ctrl *vflip;
> + struct v4l2_ctrl *hblank;
> + struct v4l2_ctrl *vblank;
> + struct v4l2_ctrl *test_pattern;
> + } ctrls;
> +};
> +
> +static const struct ov5693_reg ov5693_global_regs[] = {
> + {0x0103, 0x01},
> + {0x3016, 0xf0},
> + {0x3017, 0xf0},
> + {0x3018, 0xf0},
> + {0x3022, 0x01},
> + {0x3028, 0x44},
> + {0x3098, 0x02},
> + {0x3099, 0x19},
> + {0x309a, 0x02},
> + {0x309b, 0x01},
> + {0x309c, 0x00},
> + {0x30a0, 0xd2},
> + {0x30a2, 0x01},
> + {0x30b2, 0x00},
> + {0x30b3, 0x7d},
> + {0x30b4, 0x03},
> + {0x30b5, 0x04},
> + {0x30b6, 0x01},
> + {0x3104, 0x21},
> + {0x3106, 0x00},
> + {0x3406, 0x01},
> + {0x3503, 0x07},
> + {0x350b, 0x40},
> + {0x3601, 0x0a},
> + {0x3602, 0x38},
> + {0x3612, 0x80},
> + {0x3620, 0x54},
> + {0x3621, 0xc7},
> + {0x3622, 0x0f},
> + {0x3625, 0x10},
> + {0x3630, 0x55},
> + {0x3631, 0xf4},
> + {0x3632, 0x00},
> + {0x3633, 0x34},
> + {0x3634, 0x02},
> + {0x364d, 0x0d},
> + {0x364f, 0xdd},
> + {0x3660, 0x04},
> + {0x3662, 0x10},
> + {0x3663, 0xf1},
> + {0x3665, 0x00},
> + {0x3666, 0x20},
> + {0x3667, 0x00},
> + {0x366a, 0x80},
> + {0x3680, 0xe0},
> + {0x3681, 0x00},
> + {0x3700, 0x42},
> + {0x3701, 0x14},
> + {0x3702, 0xa0},
> + {0x3703, 0xd8},
> + {0x3704, 0x78},
> + {0x3705, 0x02},
> + {0x370a, 0x00},
> + {0x370b, 0x20},
> + {0x370c, 0x0c},
> + {0x370d, 0x11},
> + {0x370e, 0x00},
> + {0x370f, 0x40},
> + {0x3710, 0x00},
> + {0x371a, 0x1c},
> + {0x371b, 0x05},
> + {0x371c, 0x01},
> + {0x371e, 0xa1},
> + {0x371f, 0x0c},
> + {0x3721, 0x00},
> + {0x3724, 0x10},
> + {0x3726, 0x00},
> + {0x372a, 0x01},
> + {0x3730, 0x10},
> + {0x3738, 0x22},
> + {0x3739, 0xe5},
> + {0x373a, 0x50},
> + {0x373b, 0x02},
> + {0x373c, 0x41},
> + {0x373f, 0x02},
> + {0x3740, 0x42},
> + {0x3741, 0x02},
> + {0x3742, 0x18},
> + {0x3743, 0x01},
> + {0x3744, 0x02},
> + {0x3747, 0x10},
> + {0x374c, 0x04},
> + {0x3751, 0xf0},
> + {0x3752, 0x00},
> + {0x3753, 0x00},
> + {0x3754, 0xc0},
> + {0x3755, 0x00},
> + {0x3756, 0x1a},
> + {0x3758, 0x00},
> + {0x3759, 0x0f},
> + {0x376b, 0x44},
> + {0x375c, 0x04},
> + {0x3774, 0x10},
> + {0x3776, 0x00},
> + {0x377f, 0x08},
> + {0x3780, 0x22},
> + {0x3781, 0x0c},
> + {0x3784, 0x2c},
> + {0x3785, 0x1e},
> + {0x378f, 0xf5},
> + {0x3791, 0xb0},
> + {0x3795, 0x00},
> + {0x3796, 0x64},
> + {0x3797, 0x11},
> + {0x3798, 0x30},
> + {0x3799, 0x41},
> + {0x379a, 0x07},
> + {0x379b, 0xb0},
> + {0x379c, 0x0c},
> + {0x3a04, 0x06},
> + {0x3a05, 0x14},
> + {0x3e07, 0x20},
> + {0x4000, 0x08},
> + {0x4001, 0x04},
> + {0x4004, 0x08},
> + {0x4006, 0x20},
> + {0x4008, 0x24},
> + {0x4009, 0x10},
> + {0x4058, 0x00},
> + {0x4101, 0xb2},
> + {0x4307, 0x31},
> + {0x4511, 0x05},
> + {0x4512, 0x01},
> + {0x481f, 0x30},
> + {0x4826, 0x2c},
> + {0x4d02, 0xfd},
> + {0x4d03, 0xf5},
> + {0x4d04, 0x0c},
> + {0x4d05, 0xcc},
> + {0x4837, 0x0a},
> + {0x5003, 0x20},
> + {0x5013, 0x00},
> + {0x5842, 0x01},
> + {0x5843, 0x2b},
> + {0x5844, 0x01},
> + {0x5845, 0x92},
> + {0x5846, 0x01},
> + {0x5847, 0x8f},
> + {0x5848, 0x01},
> + {0x5849, 0x0c},
> + {0x5e10, 0x0c},
> + {0x3820, 0x00},
> + {0x3821, 0x1e},
> + {0x5041, 0x14}
> +};
> +
> +static const struct ov5693_reg_list ov5693_global_setting = {
> + .num_regs = ARRAY_SIZE(ov5693_global_regs),
> + .regs = ov5693_global_regs,
> +};
> +
> +#define OV5693_NUM_RESOLUTIONS ARRAY_SIZE(ov5693_resolutions)
> +struct ov5693_resolution ov5693_resolutions[] = {
> + {
> + .desc = "ov5693_2592x1944_30fps",
> + .fps = 30,
> +
> + .crop_start_x = 16,
> + .offset_x = 0,
> + .output_size_x = 2592,
> + .crop_end_x = 2608,
> + .hts = 2688,
Aren't the crop information here duplicated in the .crop field ? Do
you need to have them separate ?
> +
> + .crop_start_y = 6,
> + .offset_y = 0,
> + .output_size_y = 1944,
> + .crop_end_y = 1950,
> + .vts = 1984,
> +
> + .inc_x_odd = 1,
> + .inc_x_even = 1,
> + .inc_y_odd = 1,
> + .inc_y_even = 1,
> +
> + .crop = {
> + .left = 16,
> + .top = 6,
> + .width = 2592,
> + .height = 1944
> + },
> + },
> + {
> + .desc = "ov5693_1920x1080_30fps",
What's desc used for ?
> + .fps = 30,
> +
> + .crop_start_x = 16,
> + .offset_x = 0,
> + .output_size_x = 1920,
> + .crop_end_x = 2608,
> + .hts = 2688,
> +
> + .crop_start_y = 249,
> + .offset_y = 0,
> + .output_size_y = 1080,
> + .crop_end_y = 1707,
> + .vts = 1984,
> +
> + .scale_enable = true,
> +
> + .inc_x_odd = 1,
> + .inc_x_even = 1,
> + .inc_y_odd = 1,
> + .inc_y_even = 1,
> +
> + .crop = {
> + .left = 16,
> + .top = 249,
> + .width = 2592,
> + .height = 1458
> + },
> + },
> + {
> + .desc = "ov5693_1280x720_60fps",
> + .fps = 60,
> +
> + .crop_start_x = 32,
> + .offset_x = 0,
> + .output_size_x = 1280,
> + .crop_end_x = 2592,
> + .binning_x = true,
> + .hts = 2688,
> +
> + .crop_start_y = 252,
> + .offset_y = 0,
> + .output_size_y = 720,
> + .crop_end_y = 1692,
> + .binning_y = true,
> + .vts = 992,
> +
> + .inc_x_odd = 3,
> + .inc_x_even = 1,
> + .inc_y_odd = 3,
> + .inc_y_even = 1,
> +
> + .crop = {
> + .left = 32,
> + .top = 252,
> + .width = 2560,
> + .height = 1440
> + },
> + }
> +};
> +
> +static const s64 link_freq_menu_items[] = {
> + OV5693_LINK_FREQ_400MHZ
> +};
> +
> +static const char * const ov5693_supply_names[] = {
> + "avdd",
> + "dovdd",
> +};
> +
> +static const char * const ov5693_test_pattern_menu[] = {
> + "Disabled",
> + "Random Data",
> + "Colour Bars",
> + "Colour Bars with Rolling Bar"
> +};
> +
> +static const u8 ov5693_test_pattern_bits[] = {
> + 0,
> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM,
> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS,
> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS |
> + OV5693_TEST_PATTERN_ROLLING,
> +};
> +
> +/* I2C I/O Operations */
> +
> +static int ov5693_read_reg(struct ov5693_device *ov5693, u16 addr, u8 *value)
> +{
> + unsigned char data[2] = { addr >> 8, addr & 0xff };
> + struct i2c_client *client = ov5693->client;
> + int ret;
> +
> + ret = i2c_master_send(client, data, sizeof(data));
> + if (ret < 0) {
> + dev_dbg(&client->dev, "i2c send error at address 0x%04x\n",
> + addr);
> + return ret;
> + }
> +
> + ret = i2c_master_recv(client, value, 1);
> + if (ret < 0) {
> + dev_dbg(&client->dev, "i2c recv error at address 0x%04x\n",
> + addr);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static void ov5693_write_reg(struct ov5693_device *ov5693, u16 addr, u8 value,
> + int *error)
> +{
> + unsigned char data[3] = { addr >> 8, addr & 0xff, value };
> + int ret;
> +
> + if (*error < 0)
> + return;
> +
> + ret = i2c_master_send(ov5693->client, data, sizeof(data));
> + if (ret < 0) {
> + dev_dbg(ov5693->dev, "i2c send error at address 0x%04x: %d\n",
> + addr, ret);
> + *error = ret;
> + }
> +}
> +
> +static int ov5693_write_reg_array(struct ov5693_device *ov5693,
> + const struct ov5693_reg_list *reglist)
> +{
> + unsigned int i;
> + int ret = 0;
> +
> + for (i = 0; i < reglist->num_regs; i++)
> + ov5693_write_reg(ov5693, reglist->regs[i].reg,
> + reglist->regs[i].val, &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_update_bits(struct ov5693_device *ov5693, u16 address,
> + u16 mask, u16 bits)
> +{
> + u8 value = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, address, &value);
> + if (ret)
> + return ret;
> +
> + value &= ~mask;
> + value |= bits;
> +
> + ov5693_write_reg(ov5693, address, value, &ret);
Shouldn't ret be initialized to 0 ?
> + if (ret)
> + return ret;
> +
> + return 0;
You can just return ret I guess
> +}
> +
> +/* V4L2 Controls Functions */
> +
> +static int ov5693_flip_vert_configure(struct ov5693_device *ov5693, bool enable)
> +{
> + u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN |
> + OV5693_FORMAT1_FLIP_VERT_SENSOR_EN;
> + int ret;
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG, bits,
> + enable ? bits : 0);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int ov5693_flip_horz_configure(struct ov5693_device *ov5693, bool enable)
> +{
> + u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN |
> + OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN;
> + int ret;
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG, bits,
> + enable ? bits : 0);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value)
> +{
Out of curiosity, what's the unit of the exposure for this chip ?
> + u8 exposure_hh = 0, exposure_h = 0, exposure_l = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG, &exposure_hh);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG, &exposure_h);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG, &exposure_l);
> + if (ret)
> + return ret;
> +
> + /* The lowest 4 bits are unsupported fractional bits */
> + *value = ((exposure_hh << 16) | (exposure_h << 8) | exposure_l) >> 4;
> +
> + return 0;
> +}
> +
> +static int ov5693_exposure_configure(struct ov5693_device *ov5693, u32 exposure)
> +{
> + int ret = 0;
No intialization required here, it will be overwritten below.
> +
> + /* Enable HDR Mode to access "short" exposure */
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
> + OV5693_FORMAT2_HDR_EN, OV5693_FORMAT2_HDR_EN);
> + if (ret)
> + return ret;
> +
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG,
> + OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG,
> + OV5693_EXPOSURE_CTRL_H(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG,
> + OV5693_EXPOSURE_CTRL_L(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_HH_REG,
> + OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_H_REG,
> + OV5693_EXPOSURE_CTRL_H(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_L_REG,
> + OV5693_EXPOSURE_CTRL_L(exposure), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain)
> +{
> + u8 gain_l = 0, gain_h = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_H_REG, &gain_h);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_L_REG, &gain_l);
> + if (ret)
> + return ret;
> +
> + /* As with exposure, the lowest 4 bits are fractional bits. */
> + *gain = ((gain_h << 8) | gain_l) >> 4;
> +
> + return ret;
> +}
> +
> +static int ov5693_digital_gain_configure(struct ov5693_device *ov5693, u32 gain)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_H_REG,
> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_L_REG,
> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_H_REG,
> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_L_REG,
> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_H_REG,
> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_L_REG,
> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_L_REG,
> + OV5693_GAIN_CTRL_L(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_H_REG,
> + OV5693_GAIN_CTRL_H(gain), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank)
> +{
> + u16 vts = ov5693->mode->output_size_y + vblank;
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
> + OV5693_TIMING_VTS_H(vts), &ret);
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
> + OV5693_TIMING_VTS_L(vts), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_TEST_PATTERN_REG,
> + ov5693_test_pattern_bits[idx], &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct ov5693_device *ov5693 =
> + container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
> + int ret = 0;
> +
> + /* If VBLANK is altered we need to update exposure to compensate */
> + if (ctrl->id == V4L2_CID_VBLANK) {
> + int exposure_max;
> +
> + exposure_max = ov5693->mode->output_size_y + ctrl->val -
> + OV5693_INTEGRATION_TIME_MARGIN;
> + __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
> + ov5693->ctrls.exposure->minimum,
> + exposure_max, ov5693->ctrls.exposure->step,
> + ov5693->ctrls.exposure->val < exposure_max ?
> + ov5693->ctrls.exposure->val : exposure_max);
> + }
> +
> + /* Only apply changes to the controls if the device is powered up */
> + if (!pm_runtime_get_if_in_use(ov5693->dev))
> + return 0;
> +
> + switch (ctrl->id) {
> + case V4L2_CID_EXPOSURE:
> + ret = ov5693_exposure_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_ANALOGUE_GAIN:
> + ret = ov5693_analog_gain_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_DIGITAL_GAIN:
> + ret = ov5693_digital_gain_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_HFLIP:
> + ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val);
> + break;
> + case V4L2_CID_VFLIP:
> + ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val);
> + break;
> + case V4L2_CID_VBLANK:
> + ret = ov5693_vts_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_TEST_PATTERN:
> + ret = ov5693_test_pattern_configure(ov5693, ctrl->val);
> + break;
> + default:
> + ret = -EINVAL;
> + }
> +
> + pm_runtime_put(ov5693->dev);
> +
> + return ret;
> +}
> +
> +static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct ov5693_device *ov5693 =
> + container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
> +
> + switch (ctrl->id) {
> + case V4L2_CID_EXPOSURE_ABSOLUTE:
> + return ov5693_get_exposure(ov5693, &ctrl->val);
> + case V4L2_CID_AUTOGAIN:
> + return ov5693_get_gain(ov5693, &ctrl->val);
> + default:
> + return -EINVAL;
> + }
> +}
> +
> +static const struct v4l2_ctrl_ops ov5693_ctrl_ops = {
> + .s_ctrl = ov5693_s_ctrl,
> + .g_volatile_ctrl = ov5693_g_volatile_ctrl
> +};
> +
> +/* System Control Functions */
> +
> +static int ov5693_mode_configure(struct ov5693_device *ov5693)
> +{
> + const struct ov5693_resolution *mode = ov5693->mode;
> + int ret = 0;
> +
> + /* Crop Start X */
> + ov5693_write_reg(ov5693, OV5693_CROP_START_X_H_REG,
> + OV5693_CROP_START_X_H(mode->crop_start_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_START_X_L_REG,
> + OV5693_CROP_START_X_L(mode->crop_start_x), &ret);
> +
> + /* Offset X */
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_H_REG,
> + OV5693_OFFSET_START_X_H(mode->offset_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_L_REG,
> + OV5693_OFFSET_START_X_L(mode->offset_x), &ret);
> +
> + /* Output Size X */
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_H_REG,
> + OV5693_OUTPUT_SIZE_X_H(mode->output_size_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_L_REG,
> + OV5693_OUTPUT_SIZE_X_L(mode->output_size_x), &ret);
> +
> + /* Crop End X */
> + ov5693_write_reg(ov5693, OV5693_CROP_END_X_H_REG,
> + OV5693_CROP_END_X_H(mode->crop_end_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_END_X_L_REG,
> + OV5693_CROP_END_X_L(mode->crop_end_x), &ret);
> +
> + /* Horizontal Total Size */
> + ov5693_write_reg(ov5693, OV5693_TIMING_HTS_H_REG,
> + OV5693_TIMING_HTS_H(mode->hts), &ret);
> + ov5693_write_reg(ov5693, OV5693_TIMING_HTS_L_REG,
> + OV5693_TIMING_HTS_L(mode->hts), &ret);
> +
> + /* Crop Start Y */
> + ov5693_write_reg(ov5693, OV5693_CROP_START_Y_H_REG,
> + OV5693_CROP_START_Y_H(mode->crop_start_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_START_Y_L_REG,
> + OV5693_CROP_START_Y_L(mode->crop_start_y), &ret);
> +
> + /* Offset Y */
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_H_REG,
> + OV5693_OFFSET_START_Y_H(mode->offset_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_L_REG,
> + OV5693_OFFSET_START_Y_L(mode->offset_y), &ret);
> +
> + /* Output Size Y */
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_H_REG,
> + OV5693_OUTPUT_SIZE_Y_H(mode->output_size_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_L_REG,
> + OV5693_OUTPUT_SIZE_Y_L(mode->output_size_y), &ret);
> +
> + /* Crop End Y */
> + ov5693_write_reg(ov5693, OV5693_CROP_END_Y_H_REG,
> + OV5693_CROP_END_Y_H(mode->crop_end_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_END_Y_L_REG,
> + OV5693_CROP_END_Y_L(mode->crop_end_y), &ret);
> +
> + /* Vertical Total Size */
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
> + OV5693_TIMING_VTS_H(mode->vts), &ret);
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
> + OV5693_TIMING_VTS_L(mode->vts), &ret);
> +
> + /* Subsample X increase */
> + ov5693_write_reg(ov5693, OV5693_SUB_INC_X_REG,
> + ((mode->inc_x_odd << 4) & 0xf0) |
> + (mode->inc_x_even & 0x0f), &ret);
> + /* Subsample Y increase */
> + ov5693_write_reg(ov5693, OV5693_SUB_INC_Y_REG,
> + ((mode->inc_y_odd << 4) & 0xf0) |
> + (mode->inc_y_even & 0x0f), &ret);
> +
> + if (ret)
> + return ret;
> +
> + /* Binning */
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG,
> + OV5693_FORMAT1_VBIN_EN,
> + mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
> + OV5693_FORMAT2_HBIN_EN,
> + mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0);
> + if (ret)
> + return ret;
> +
> + /* Scaler */
> + ret = ov5693_update_bits(ov5693, OV5693_ISP_CTRL2_REG,
> + OV5693_ISP_SCALE_ENABLE,
> + mode->scale_enable ? OV5693_ISP_SCALE_ENABLE : 0);
> + if (ret)
> + return ret;
> +
> + return ret;
> +}
> +
> +static int ov5693_sw_standby(struct ov5693_device *ov5693, bool standby)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_SW_STREAM_REG,
> + standby ? OV5693_STOP_STREAMING : OV5693_START_STREAMING,
> + &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_sw_reset(struct ov5693_device *ov5693)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_sensor_init(struct ov5693_device *ov5693)
> +{
> + int ret = 0;
> +
> + ret = ov5693_sw_reset(ov5693);
> + if (ret) {
> + dev_err(ov5693->dev, "%s software reset error\n", __func__);
> + return ret;
> + }
> +
> + ret = ov5693_write_reg_array(ov5693, &ov5693_global_setting);
> + if (ret) {
> + dev_err(ov5693->dev, "%s global settings error\n", __func__);
> + return ret;
> + }
> +
> + ret = ov5693_mode_configure(ov5693);
> + if (ret) {
> + dev_err(ov5693->dev, "%s mode configure error\n", __func__);
> + return ret;
> + }
> +
> + ret = ov5693_sw_standby(ov5693, true);
> + if (ret)
> + dev_err(ov5693->dev, "%s software standby error\n", __func__);
> +
> + return ret;
> +}
> +
> +static void ov5693_sensor_powerdown(struct ov5693_device *ov5693)
> +{
> + gpiod_set_value_cansleep(ov5693->reset, 1);
> + gpiod_set_value_cansleep(ov5693->powerdown, 1);
> +
> + regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies);
> +
> + clk_disable_unprepare(ov5693->clk);
> +}
> +
> +static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
> +{
> + int ret = 0;
No need to initialize it
> +
> + gpiod_set_value_cansleep(ov5693->reset, 1);
> + gpiod_set_value_cansleep(ov5693->powerdown, 1);
> +
> + ret = clk_prepare_enable(ov5693->clk);
> + if (ret) {
> + dev_err(ov5693->dev, "Failed to enable clk\n");
> + goto fail_power;
> + }
> +
> + ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies);
> + if (ret) {
> + dev_err(ov5693->dev, "Failed to enable regulators\n");
> + goto fail_power;
> + }
> +
> + gpiod_set_value_cansleep(ov5693->reset, 0);
> + gpiod_set_value_cansleep(ov5693->powerdown, 0);
I would release powerdown first then reset
> +
> + usleep_range(20000, 25000);
Quite a long delay, does the chip manual quantify it ?
> +
> + return 0;
> +
> +fail_power:
> + ov5693_sensor_powerdown(ov5693);
> + return ret;
> +}
> +
> +static int __maybe_unused ov5693_sensor_suspend(struct device *dev)
> +{
> + struct v4l2_subdev *sd = dev_get_drvdata(dev);
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + int ret;
> +
> + mutex_lock(&ov5693->lock);
> +
> + if (ov5693->streaming) {
> + ret = ov5693_sw_standby(ov5693, true);
> + if (ret)
> + goto out_unlock;
> + }
> +
> + ov5693_sensor_powerdown(ov5693);
> +
> +out_unlock:
> + mutex_unlock(&ov5693->lock);
> + return ret;
> +}
> +
> +static int __maybe_unused ov5693_sensor_resume(struct device *dev)
> +{
> + struct v4l2_subdev *sd = dev_get_drvdata(dev);
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + int ret;
> +
> + mutex_lock(&ov5693->lock);
> +
> + ret = ov5693_sensor_powerup(ov5693);
> + if (ret)
> + goto out_unlock;
> +
> + ret = ov5693_sensor_init(ov5693);
> + if (ret) {
> + dev_err(dev, "ov5693 sensor init failure\n");
> + goto err_power;
> + }
> +
> + if (ov5693->streaming) {
> + ret = ov5693_sw_standby(ov5693, false);
> + if (ret)
> + goto err_power;
> + }
> +
> + goto out_unlock;
> +
> +err_power:
> + ov5693_sensor_powerdown(ov5693);
> +out_unlock:
> + mutex_unlock(&ov5693->lock);
> + return ret;
> +}
> +
> +static int ov5693_detect(struct ov5693_device *ov5693)
> +{
> + u8 id_l = 0, id_h = 0;
> + u16 id = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_H, &id_h);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_L, &id_l);
> + if (ret)
> + return ret;
> +
> + id = (id_h << 8) | id_l;
> +
> + if (id != OV5693_CHIP_ID) {
> + dev_err(ov5693->dev, "sensor ID mismatch. Found 0x%04x\n", id);
> + return -ENODEV;
> + }
> +
> + return 0;
> +}
> +
> +/* V4L2 Framework callbacks */
> +
> +static int ov5693_set_fmt(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + const struct ov5693_resolution *mode;
> + int exposure_max;
> + int ret = 0;
> + int hblank;
> +
> + if (format->pad)
> + return -EINVAL;
The core checks this for you
> +
> + mutex_lock(&ov5693->lock);
> +
> + mode = v4l2_find_nearest_size(ov5693_resolutions,
> + OV5693_NUM_RESOLUTIONS, output_size_x,
> + output_size_y, format->format.width,
> + format->format.height);
> +
> + if (!mode)
> + return -EINVAL;
Bailing out without releseing the mutex ?
I would actually only lock when V4L2_SUBDEV_FORMAT_ACTIVE ...
> +
> + format->format.width = mode->output_size_x;
> + format->format.height = mode->output_size_y;
> + format->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
> +
> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
> + *v4l2_subdev_get_try_format(sd, cfg, format->pad) = format->format;
> + goto mutex_unlock;
> + }
> +
... here
> + ov5693->mode = mode;
> +
> + /* Update limits and set FPS to default */
> + __v4l2_ctrl_modify_range(ov5693->ctrls.vblank,
> + OV5693_TIMING_MIN_VTS,
> + OV5693_TIMING_MAX_VTS - mode->output_size_y,
> + 1, mode->vts - mode->output_size_y);
> + __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank,
> + mode->vts - mode->output_size_y);
> +
> + hblank = mode->hts - mode->output_size_x;
> + __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1,
> + hblank);
Aren't there any VTS or HTS margins for this chip ?
> +
> + exposure_max = mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
> + __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
> + ov5693->ctrls.exposure->minimum, exposure_max,
> + ov5693->ctrls.exposure->step,
> + ov5693->ctrls.exposure->val < exposure_max ?
> + ov5693->ctrls.exposure->val : exposure_max);
min(ov5693->ctrls.exposure->val, exposure_max) ?
> +
> +mutex_unlock:
> + mutex_unlock(&ov5693->lock);
> + return ret;
> +}
> +
> +static const struct v4l2_rect *
> +__ov5693_get_pad_crop(struct ov5693_device *ov5693, struct v4l2_subdev_pad_config *cfg,
> + unsigned int pad, enum v4l2_subdev_format_whence which)
> +{
> + switch (which) {
> + case V4L2_SUBDEV_FORMAT_TRY:
> + return v4l2_subdev_get_try_crop(&ov5693->sd, cfg, pad);
> + case V4L2_SUBDEV_FORMAT_ACTIVE:
> + return &ov5693->mode->crop;
> + }
> +
> + return NULL;
> +}
> +
> +static int ov5693_get_selection(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_selection *sel)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + switch (sel->target) {
> + case V4L2_SEL_TGT_CROP:
> + mutex_lock(&ov5693->lock);
> + sel->r = *__ov5693_get_pad_crop(ov5693, cfg, sel->pad, sel->which);
> + mutex_unlock(&ov5693->lock);
> + break;
> + case V4L2_SEL_TGT_NATIVE_SIZE:
> + sel->r.top = 0;
> + sel->r.left = 0;
> + sel->r.width = OV5693_NATIVE_WIDTH;
> + sel->r.height = OV5693_NATIVE_HEIGHT;
> + break;
> + case V4L2_SEL_TGT_CROP_BOUNDS:
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + sel->r.top = OV5693_ACTIVE_START_TOP;
> + sel->r.left = OV5693_ACTIVE_START_LEFT;
> + sel->r.width = OV5693_ACTIVE_WIDTH;
> + sel->r.height = OV5693_ACTIVE_HEIGHT;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int ov5693_get_fmt(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct v4l2_mbus_framefmt *fmt = &format->format;
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + if (format->pad)
> + return -EINVAL;
> +
> + if (!fmt)
> + return -EINVAL;
I think the core checks these for you
> +
> + fmt->width = ov5693->mode->output_size_x;
> + fmt->height = ov5693->mode->output_size_y;
> + fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
> +
> + return 0;
> +}
> +
> +static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + int ret;
> +
> + if (enable) {
> + ret = pm_runtime_get_sync(ov5693->dev);
> + if (ret < 0)
> + goto err_power_down;
> + }
> +
> + ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler);
Do you want this when !enable ?
> + if (ret)
> + goto err_power_down;
> +
> + mutex_lock(&ov5693->lock);
> + ret = ov5693_sw_standby(ov5693, !enable);
if this fail the ov5693->streaming flag should probably not be updated
> + mutex_unlock(&ov5693->lock);
> +
> + if (ret)
> + goto err_power_down;
> + ov5693->streaming = !!enable;
> +
> + if (!enable)
> + pm_runtime_put(ov5693->dev);
> +
> + return 0;
> +err_power_down:
> + pm_runtime_put_noidle(ov5693->dev);
> + return ret;
> +}
> +
> +static int ov5693_g_frame_interval(struct v4l2_subdev *sd,
> + struct v4l2_subdev_frame_interval *interval)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + interval->interval.numerator = 1;
> + interval->interval.denominator = ov5693->mode->fps;
> +
> + return 0;
> +}
> +
> +static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + if (code->index >= OV5693_NUM_MBUS_FMTS)
> + return -EINVAL;
> +
> + code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
> + return 0;
> +}
> +
> +static int ov5693_enum_frame_size(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_frame_size_enum *fse)
> +{
> + int index = fse->index;
> +
> + if (index >= OV5693_NUM_RESOLUTIONS)
> + return -EINVAL;
> +
> + fse->min_width = ov5693_resolutions[index].output_size_x;
> + fse->min_height = ov5693_resolutions[index].output_size_y;
> + fse->max_width = ov5693_resolutions[index].output_size_x;
> + fse->max_height = ov5693_resolutions[index].output_size_y;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_video_ops ov5693_video_ops = {
> + .s_stream = ov5693_s_stream,
> + .g_frame_interval = ov5693_g_frame_interval,
> +};
> +
> +static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
> + .enum_mbus_code = ov5693_enum_mbus_code,
> + .enum_frame_size = ov5693_enum_frame_size,
> + .get_fmt = ov5693_get_fmt,
> + .set_fmt = ov5693_set_fmt,
> + .get_selection = ov5693_get_selection,
> +};
> +
> +static const struct v4l2_subdev_ops ov5693_ops = {
> + .video = &ov5693_video_ops,
> + .pad = &ov5693_pad_ops,
> +};
> +
> +/* Sensor and Driver Configuration Functions */
> +
> +static int ov5693_init_controls(struct ov5693_device *ov5693)
> +{
> + const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops;
> + struct v4l2_fwnode_device_properties props;
> + int vblank_max, vblank_def;
> + int exposure_max;
> + int hblank;
> + int ret;
> +
> + ret = v4l2_ctrl_handler_init(&ov5693->ctrls.handler, 14);
I do count 10 controls, am I mistkaen ?
> + if (ret)
> + return ret;
> +
> + /* link freq */
> + ov5693->ctrls.link_freq = v4l2_ctrl_new_int_menu(&ov5693->ctrls.handler,
> + NULL, V4L2_CID_LINK_FREQ,
> + 0, 0, link_freq_menu_items);
> + if (ov5693->ctrls.link_freq)
> + ov5693->ctrls.link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +
> + /* pixel rate */
> + ov5693->ctrls.pixel_rate = v4l2_ctrl_new_std(&ov5693->ctrls.handler, NULL,
> + V4L2_CID_PIXEL_RATE, 0,
> + OV5693_PIXEL_RATE, 1,
> + OV5693_PIXEL_RATE);
> +
> + /* Exposure */
> + exposure_max = ov5693->mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
> + ov5693->ctrls.exposure = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_EXPOSURE,
> + OV5693_EXPOSURE_MIN,
> + exposure_max,
> + OV5693_EXPOSURE_STEP,
> + exposure_max);
> +
> + /* Gain */
> + ov5693->ctrls.analogue_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler,
> + ops, V4L2_CID_ANALOGUE_GAIN,
> + OV5693_GAIN_MIN,
> + OV5693_GAIN_MAX,
> + OV5693_GAIN_STEP,
> + OV5693_GAIN_DEF);
> + ov5693->ctrls.digital_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_DIGITAL_GAIN,
> + OV5693_DIGITAL_GAIN_MIN,
> + OV5693_DIGITAL_GAIN_MAX,
> + OV5693_DIGITAL_GAIN_STEP,
> + OV5693_DIGITAL_GAIN_DEF);
> +
> + /* Flip */
> + ov5693->ctrls.hflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_HFLIP, 0, 1, 1, 0);
> + ov5693->ctrls.vflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_VFLIP, 0, 1, 1, 0);
> +
> + hblank = ov5693->mode->hts - ov5693->mode->output_size_x;
> + ov5693->ctrls.hblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_HBLANK, hblank, hblank,
> + 1, hblank);
> + if (ov5693->ctrls.hblank)
> + ov5693->ctrls.hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +
> + vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode->output_size_y;
> + vblank_def = ov5693->mode->vts - ov5693->mode->output_size_y;
> + ov5693->ctrls.vblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_VBLANK,
> + OV5693_TIMING_MIN_VTS,
> + vblank_max, 1, vblank_def);
> +
> + ov5693->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items(
> + &ov5693->ctrls.handler, ops, V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(ov5693_test_pattern_menu) - 1,
> + 0, 0, ov5693_test_pattern_menu);
> +
> + if (ov5693->ctrls.handler.error) {
> + dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n");
> + ret = ov5693->ctrls.handler.error;
> + goto err_free_handler;
> + }
> +
> + /* set properties from fwnode (e.g. rotation, orientation) */
> + ret = v4l2_fwnode_device_parse(ov5693->dev, &props);
> + if (ret)
> + goto err_free_handler;
> +
> + ret = v4l2_ctrl_new_fwnode_properties(&ov5693->ctrls.handler, ops,
> + &props);
> + if (ret)
> + goto err_free_handler;
> +
> + /* Use same lock for controls as for everything else. */
> + ov5693->ctrls.handler.lock = &ov5693->lock;
> + ov5693->sd.ctrl_handler = &ov5693->ctrls.handler;
> +
> + return 0;
> +
> +err_free_handler:
> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
> + return ret;
> +}
> +
> +static int ov5693_configure_gpios(struct ov5693_device *ov5693)
> +{
> + ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset",
> + GPIOD_OUT_HIGH);
> + if (IS_ERR(ov5693->reset)) {
> + dev_err(ov5693->dev, "Error fetching reset GPIO\n");
> + return PTR_ERR(ov5693->reset);
> + }
> +
> + ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown",
> + GPIOD_OUT_HIGH);
> + if (IS_ERR(ov5693->powerdown)) {
> + dev_err(ov5693->dev, "Error fetching powerdown GPIO\n");
> + return PTR_ERR(ov5693->powerdown);
> + }
> +
> + return 0;
> +}
> +
> +static int ov5693_get_regulators(struct ov5693_device *ov5693)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < OV5693_NUM_SUPPLIES; i++)
> + ov5693->supplies[i].supply = ov5693_supply_names[i];
> +
> + return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES,
> + ov5693->supplies);
> +}
> +
> +static int ov5693_probe(struct i2c_client *client)
> +{
> + struct fwnode_handle *fwnode = dev_fwnode(&client->dev);
> + struct fwnode_handle *endpoint;
> + struct ov5693_device *ov5693;
> + u32 clk_rate;
> + int ret = 0;
> +
> + endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
> + if (!endpoint && !IS_ERR_OR_NULL(fwnode->secondary))
> + endpoint = fwnode_graph_get_next_endpoint(fwnode->secondary, NULL);
> + if (!endpoint)
> + return -EPROBE_DEFER;
mmm, if the endpoint is not specified in firmware it's an
unrecoverable error, deplaying probe won't help ? Or is this due to
the 'secondary' (which I'm not actually sure what it represents :)
> +
> + ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
> + if (!ov5693)
> + return -ENOMEM;
> +
> + ov5693->client = client;
> + ov5693->dev = &client->dev;
> +
> + mutex_init(&ov5693->lock);
> +
> + v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
> +
> + ov5693->clk = devm_clk_get(&client->dev, "xvclk");
> + if (IS_ERR(ov5693->clk)) {
> + dev_err(&client->dev, "Error getting clock\n");
> + return PTR_ERR(ov5693->clk);
> + }
> +
> + clk_rate = clk_get_rate(ov5693->clk);
> + if (clk_rate != OV5693_XVCLK_FREQ) {
> + dev_err(&client->dev, "Unsupported clk freq %u, expected %u\n",
> + clk_rate, OV5693_XVCLK_FREQ);
> + return -EINVAL;
> + }
> +
> + ret = ov5693_configure_gpios(ov5693);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_get_regulators(ov5693);
> + if (ret) {
> + dev_err(&client->dev, "Error fetching regulators\n");
> + return ret;
> + }
> +
> + ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> + ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
> + ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
> + ov5693->mode = &ov5693_resolutions[OV5693_NUM_RESOLUTIONS - 1];
> +
> + ret = ov5693_init_controls(ov5693);
> + if (ret)
> + return ret;
> +
> + ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad);
> + if (ret)
> + goto err_ctrl_handler_free;
> +
> + /*
> + * We need the driver to work in the event that pm runtime is disable in
> + * the kernel, so power up and verify the chip now. In the event that
> + * runtime pm is disabled this will leave the chip on, so that streaming
> + * will work.
> + */
> +
> + ret = ov5693_sensor_powerup(ov5693);
> + if (ret)
> + goto err_media_entity_cleanup;
> +
> + ret = ov5693_detect(ov5693);
> + if (ret)
> + goto err_powerdown;
> +
> + pm_runtime_set_active(&client->dev);
> + pm_runtime_get_noresume(&client->dev);
> + pm_runtime_enable(&client->dev);
> +
> + ret = v4l2_async_register_subdev_sensor_common(&ov5693->sd);
> + if (ret) {
> + dev_err(&client->dev, "failed to register V4L2 subdev: %d",
> + ret);
> + goto err_pm_runtime;
> + }
> +
> + pm_runtime_set_autosuspend_delay(&client->dev, 1000);
> + pm_runtime_use_autosuspend(&client->dev);
> + pm_runtime_put_autosuspend(&client->dev);
This sequence smells funny to me, but that's maybe beacuse of the
usage of v4l2_async_register_subdev_sensor_common(). And it's anyway
the same as in the CCS driver, so I assume it's ok
> +
> + return ret;
> +
> +err_pm_runtime:
> + pm_runtime_disable(&client->dev);
> + pm_runtime_put_noidle(&client->dev);
> +err_powerdown:
> + ov5693_sensor_powerdown(ov5693);
> +err_media_entity_cleanup:
> + media_entity_cleanup(&ov5693->sd.entity);
> +err_ctrl_handler_free:
> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
> +
> + return ret;
> +}
> +
> +static int ov5693_remove(struct i2c_client *client)
> +{
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + v4l2_async_unregister_subdev(sd);
> + media_entity_cleanup(&ov5693->sd.entity);
> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
> + mutex_destroy(&ov5693->lock);
> +
> + /*
> + * Disable runtime PM. In case runtime PM is disabled in the kernel,
> + * make sure to turn power off manually.
> + */
> + pm_runtime_disable(&client->dev);
> + if (!pm_runtime_status_suspended(&client->dev))
> + ov5693_sensor_powerdown(ov5693);
> + pm_runtime_set_suspended(&client->dev);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops ov5693_pm_ops = {
> + SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL)
> +};
> +
> +static const struct acpi_device_id ov5693_acpi_match[] = {
> + {"INT33BE"},
> + {},
> +};
> +MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
> +
> +static struct i2c_driver ov5693_driver = {
> + .driver = {
> + .name = "ov5693",
> + .acpi_match_table = ov5693_acpi_match,
> + .pm = &ov5693_pm_ops,
> + },
> + .probe_new = ov5693_probe,
> + .remove = ov5693_remove,
> +};
> +module_i2c_driver(ov5693_driver);
> +
> +MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
> +MODULE_LICENSE("GPL");
Maybe you want MODULE_AUTHOR too ?
Questions for maintainers, drivers for sensors developed with ACPI
support do not need bindings, right ?
Mostly minor comments though, the driver looks good to me, and with
minor fixes addressed you can add
Reviewed-by: Jacopo Mondi <[email protected]>
Thanks
j
> --
> 2.25.1
>
Hi Jacopo, thanks for the review
On 14/03/2021 10:40, Jacopo Mondi wrote:
>> +#define OV5693_REG_CHIP_ID_H 0x300A
>> +#define OV5693_REG_CHIP_ID_L 0x300B
> Please use lower case letters in hex identifiers
Will do
>> +
>> +/* Miscellaneous */
>> +#define OV5693_NUM_MBUS_FMTS 1
> Nit: Only used in one place, maybe could be removed
Okedokey
>> +#define OV5693_NUM_RESOLUTIONS ARRAY_SIZE(ov5693_resolutions)
>> +struct ov5693_resolution ov5693_resolutions[] = {
>> + {
>> + .desc = "ov5693_2592x1944_30fps",
>> + .fps = 30,
>> +
>> + .crop_start_x = 16,
>> + .offset_x = 0,
>> + .output_size_x = 2592,
>> + .crop_end_x = 2608,
>> + .hts = 2688,
> Aren't the crop information here duplicated in the .crop field ? Do
> you need to have them separate ?
They don't need to separate, but I wonder if it's a bit confusing
because only crop.left and crop.top can be used. We couldn't draw the
output sizes from crop.width or crop.height because those values are
pre-scaling/binning. So it just seemed a bit clearer to treat them
separately.
>> +
>> + .crop_start_y = 6,
>> + .offset_y = 0,
>> + .output_size_y = 1944,
>> + .crop_end_y = 1950,
>> + .vts = 1984,
>> +
>> + .inc_x_odd = 1,
>> + .inc_x_even = 1,
>> + .inc_y_odd = 1,
>> + .inc_y_even = 1,
>> +
>> + .crop = {
>> + .left = 16,
>> + .top = 6,
>> + .width = 2592,
>> + .height = 1944
>> + },
>> + },
>> + {
>> + .desc = "ov5693_1920x1080_30fps",
> What's desc used for ?
Actually it's a leftover from the atomisp version that I've been using
as a handy label...it never even crossed my mind to change it. But it
should be a comment of course, I'll swap to that.
>> +static int ov5693_update_bits(struct ov5693_device *ov5693, u16 address,
>> + u16 mask, u16 bits)
>> +{
>> + u8 value = 0;
>> + int ret;
>> +
>> + ret = ov5693_read_reg(ov5693, address, &value);
>> + if (ret)
>> + return ret;
>> +
>> + value &= ~mask;
>> + value |= bits;
>> +
>> + ov5693_write_reg(ov5693, address, value, &ret);
> Shouldn't ret be initialized to 0 ?
Isn't that done by the return of ov5693_read_reg()?
>
>> + if (ret)
>> + return ret;
>> +
>> + return 0;
> You can just return ret I guess
Oops, yes. Thanks
>
>> +}
>> +
>> +/* V4L2 Controls Functions */
>> +
>> +static int ov5693_flip_vert_configure(struct ov5693_device *ov5693, bool enable)
>> +{
>> + u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN |
>> + OV5693_FORMAT1_FLIP_VERT_SENSOR_EN;
>> + int ret;
>> +
>> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG, bits,
>> + enable ? bits : 0);
>> + if (ret)
>> + return ret;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_flip_horz_configure(struct ov5693_device *ov5693, bool enable)
>> +{
>> + u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN |
>> + OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN;
>> + int ret;
>> +
>> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG, bits,
>> + enable ? bits : 0);
>> + if (ret)
>> + return ret;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value)
>> +{
> Out of curiosity, what's the unit of the exposure for this chip ?
1/16ths of a line, but the 4 fractional bits are unsupported, so
effectively in units of lines.
>> + u8 exposure_hh = 0, exposure_h = 0, exposure_l = 0;
>> + int ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG, &exposure_hh);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG, &exposure_h);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG, &exposure_l);
>> + if (ret)
>> + return ret;
>> +
>> + /* The lowest 4 bits are unsupported fractional bits */
>> + *value = ((exposure_hh << 16) | (exposure_h << 8) | exposure_l) >> 4;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_exposure_configure(struct ov5693_device *ov5693, u32 exposure)
>> +{
>> + int ret = 0;
> No intialization required here, it will be overwritten below.
Thanks
>> +
>> + gpiod_set_value_cansleep(ov5693->reset, 1);
>> + gpiod_set_value_cansleep(ov5693->powerdown, 1);
>> +
>> + ret = clk_prepare_enable(ov5693->clk);
>> + if (ret) {
>> + dev_err(ov5693->dev, "Failed to enable clk\n");
>> + goto fail_power;
>> + }
>> +
>> + ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies);
>> + if (ret) {
>> + dev_err(ov5693->dev, "Failed to enable regulators\n");
>> + goto fail_power;
>> + }
>> +
>> + gpiod_set_value_cansleep(ov5693->reset, 0);
>> + gpiod_set_value_cansleep(ov5693->powerdown, 0);
> I would release powerdown first then reset
OK, I'll switch to that.
>> +
>> + usleep_range(20000, 25000);
> Quite a long delay, does the chip manual quantify it ?
No actually, it's 8192 xvclk cycles - I increased this whilst debugging
something and and forgot to change it back. I'll drop it down.
> +static int ov5693_set_fmt(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + const struct ov5693_resolution *mode;
> + int exposure_max;
> + int ret = 0;
> + int hblank;
> +
> + if (format->pad)
> + return -EINVAL;
> The core checks this for you
Ah - TIL, thanks.
>> +
>> + mutex_lock(&ov5693->lock);
>> +
>> + mode = v4l2_find_nearest_size(ov5693_resolutions,
>> + OV5693_NUM_RESOLUTIONS, output_size_x,
>> + output_size_y, format->format.width,
>> + format->format.height);
>> +
>> + if (!mode)
>> + return -EINVAL;
> Bailing out without releseing the mutex ?
> I would actually only lock when V4L2_SUBDEV_FORMAT_ACTIVE ...
Ah whoops, sorry. Yes that's a good idea, I'll do that.
>> + ov5693->mode = mode;
>> +
>> + /* Update limits and set FPS to default */
>> + __v4l2_ctrl_modify_range(ov5693->ctrls.vblank,
>> + OV5693_TIMING_MIN_VTS,
>> + OV5693_TIMING_MAX_VTS - mode->output_size_y,
>> + 1, mode->vts - mode->output_size_y);
>> + __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank,
>> + mode->vts - mode->output_size_y);
>> +
>> + hblank = mode->hts - mode->output_size_x;
>> + __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1,
>> + hblank);
> Aren't there any VTS or HTS margins for this chip ?
Not that I'm aware of, but it could easily simply be me not
understanding something. I assume you're referring to something like the
minimum VTS defined for modes in some drivers, like the ov5670 [2]:
   {
      .width = 1296,
      .height = 972,
      .vts_def = OV5670_VTS_30FPS,
      .vts_min = 996,
      .reg_list = {
         .num_of_regs = ARRAY_SIZE(mode_1296x972_regs),
         .regs = mode_1296x972_regs,
      },
      .link_freq_index = OV5670_LINK_FREQ_422MHZ_INDEX,
   },
Right? I thought they just reflected what the author saw as sensible
minimums rather than a hardware limitation or anything.
>
>> +
>> + exposure_max = mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
>> + __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
>> + ov5693->ctrls.exposure->minimum, exposure_max,
>> + ov5693->ctrls.exposure->step,
>> + ov5693->ctrls.exposure->val < exposure_max ?
>> + ov5693->ctrls.exposure->val : exposure_max);
> min(ov5693->ctrls.exposure->val, exposure_max) ?
Hah derp, of course. That was silly - thanks!
>> +static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
>> +{
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> + int ret;
>> +
>> + if (enable) {
>> + ret = pm_runtime_get_sync(ov5693->dev);
>> + if (ret < 0)
>> + goto err_power_down;
>> + }
>> +
>> + ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler);
> Do you want this when !enable ?
No I guess not, good point - thanks
>> + if (ret)
>> + goto err_power_down;
>> +
>> + mutex_lock(&ov5693->lock);
>> + ret = ov5693_sw_standby(ov5693, !enable);
> if this fail the ov5693->streaming flag should probably not be updated
It shouldn't be right? It has the goto err_power_down below.
>
>> + mutex_unlock(&ov5693->lock);
>> +
>> + if (ret)
>> + goto err_power_down;
>> + ov5693->streaming = !!enable;
>> +
>> + if (!enable)
>> + pm_runtime_put(ov5693->dev);
>> +
>> + return 0;
>> +err_power_down:
>> + pm_runtime_put_noidle(ov5693->dev);
>> + return ret;
>> +}
>> +
>> +/* Sensor and Driver Configuration Functions */
>> +
>> +static int ov5693_init_controls(struct ov5693_device *ov5693)
>> +{
>> + const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops;
>> + struct v4l2_fwnode_device_properties props;
>> + int vblank_max, vblank_def;
>> + int exposure_max;
>> + int hblank;
>> + int ret;
>> +
>> + ret = v4l2_ctrl_handler_init(&ov5693->ctrls.handler, 14);
> I do count 10 controls, am I mistkaen ?
12, v4l2_ctrl_new_fwnode_properties() creates rotation and orientation
controls. I'll drop to that.
>> +static int ov5693_probe(struct i2c_client *client)
>> +{
>> + struct fwnode_handle *fwnode = dev_fwnode(&client->dev);
>> + struct fwnode_handle *endpoint;
>> + struct ov5693_device *ov5693;
>> + u32 clk_rate;
>> + int ret = 0;
>> +
>> + endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
>> + if (!endpoint && !IS_ERR_OR_NULL(fwnode->secondary))
>> + endpoint = fwnode_graph_get_next_endpoint(fwnode->secondary, NULL);
>> + if (!endpoint)
>> + return -EPROBE_DEFER;
> mmm, if the endpoint is not specified in firmware it's an
> unrecoverable error, deplaying probe won't help ? Or is this due to
> the 'secondary' (which I'm not actually sure what it represents :)
Not so unrecoverable any more; the ipu3-cio2 driver can now build
endpoints from software nodes [1], which is what's happening for the
Microsoft Surface devices. The sensor driver can actually probe fine
before the ipu3-cio2 one, but in that case because the firmware node
properties won't have been created yet,
v4l2_ctrl_new_fwnode_properties() can't create the rotation and
orientation controls from them. So that's why it defers, to give
ipu3-cio2 time to probe.
I think it's probably better to extend fwnode_graph_get_next_endpoint()
to do the check of fwnode->secondary though in retrospect.
>> +
>> + ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
>> + if (!ov5693)
>> + return -ENOMEM;
>> +
>> + ov5693->client = client;
>> + ov5693->dev = &client->dev;
>> +
>> + mutex_init(&ov5693->lock);
>> +
>> + v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
>> +
>> + ov5693->clk = devm_clk_get(&client->dev, "xvclk");
>> + if (IS_ERR(ov5693->clk)) {
>> + dev_err(&client->dev, "Error getting clock\n");
>> + return PTR_ERR(ov5693->clk);
>> + }
>> +
>> + clk_rate = clk_get_rate(ov5693->clk);
>> + if (clk_rate != OV5693_XVCLK_FREQ) {
>> + dev_err(&client->dev, "Unsupported clk freq %u, expected %u\n",
>> + clk_rate, OV5693_XVCLK_FREQ);
>> + return -EINVAL;
>> + }
>> +
>> + ret = ov5693_configure_gpios(ov5693);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_get_regulators(ov5693);
>> + if (ret) {
>> + dev_err(&client->dev, "Error fetching regulators\n");
>> + return ret;
>> + }
>> +
>> + ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
>> + ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
>> + ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
>> + ov5693->mode = &ov5693_resolutions[OV5693_NUM_RESOLUTIONS - 1];
>> +
>> + ret = ov5693_init_controls(ov5693);
>> + if (ret)
>> + return ret;
>> +
>> + ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad);
>> + if (ret)
>> + goto err_ctrl_handler_free;
>> +
>> + /*
>> + * We need the driver to work in the event that pm runtime is disable in
>> + * the kernel, so power up and verify the chip now. In the event that
>> + * runtime pm is disabled this will leave the chip on, so that streaming
>> + * will work.
>> + */
>> +
>> + ret = ov5693_sensor_powerup(ov5693);
>> + if (ret)
>> + goto err_media_entity_cleanup;
>> +
>> + ret = ov5693_detect(ov5693);
>> + if (ret)
>> + goto err_powerdown;
>> +
>> + pm_runtime_set_active(&client->dev);
>> + pm_runtime_get_noresume(&client->dev);
>> + pm_runtime_enable(&client->dev);
>> +
>> + ret = v4l2_async_register_subdev_sensor_common(&ov5693->sd);
>> + if (ret) {
>> + dev_err(&client->dev, "failed to register V4L2 subdev: %d",
>> + ret);
>> + goto err_pm_runtime;
>> + }
>> +
>> + pm_runtime_set_autosuspend_delay(&client->dev, 1000);
>> + pm_runtime_use_autosuspend(&client->dev);
>> + pm_runtime_put_autosuspend(&client->dev);
> This sequence smells funny to me, but that's maybe beacuse of the
> usage of v4l2_async_register_subdev_sensor_common(). And it's anyway
> the same as in the CCS driver, so I assume it's ok
I also assume it's ok, on the grounds that it's on Laurent's advice :D
>> +
>> + return ret;
>> +
>> +err_pm_runtime:
>> + pm_runtime_disable(&client->dev);
>> + pm_runtime_put_noidle(&client->dev);
>> +err_powerdown:
>> + ov5693_sensor_powerdown(ov5693);
>> +err_media_entity_cleanup:
>> + media_entity_cleanup(&ov5693->sd.entity);
>> +err_ctrl_handler_free:
>> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_remove(struct i2c_client *client)
>> +{
>> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> +
>> + v4l2_async_unregister_subdev(sd);
>> + media_entity_cleanup(&ov5693->sd.entity);
>> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
>> + mutex_destroy(&ov5693->lock);
>> +
>> + /*
>> + * Disable runtime PM. In case runtime PM is disabled in the kernel,
>> + * make sure to turn power off manually.
>> + */
>> + pm_runtime_disable(&client->dev);
>> + if (!pm_runtime_status_suspended(&client->dev))
>> + ov5693_sensor_powerdown(ov5693);
>> + pm_runtime_set_suspended(&client->dev);
>> +
>> + return 0;
>> +}
>> +
>> +static const struct dev_pm_ops ov5693_pm_ops = {
>> + SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL)
>> +};
>> +
>> +static const struct acpi_device_id ov5693_acpi_match[] = {
>> + {"INT33BE"},
>> + {},
>> +};
>> +MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
>> +
>> +static struct i2c_driver ov5693_driver = {
>> + .driver = {
>> + .name = "ov5693",
>> + .acpi_match_table = ov5693_acpi_match,
>> + .pm = &ov5693_pm_ops,
>> + },
>> + .probe_new = ov5693_probe,
>> + .remove = ov5693_remove,
>> +};
>> +module_i2c_driver(ov5693_driver);
>> +
>> +MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
>> +MODULE_LICENSE("GPL");
> Maybe you want MODULE_AUTHOR too ?
I was going to just leave it as the "contributions by" comment at the top
>
> Questions for maintainers, drivers for sensors developed with ACPI
> support do not need bindings, right ?
>
> Mostly minor comments though, the driver looks good to me, and with
> minor fixes addressed you can add
> Reviewed-by: Jacopo Mondi <[email protected]>
Thanks! Much appreciated.
>
> Thanks
> j
>
>> --
>> 2.25.1
>>
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=803abec64ef9d31ba068088e90fc20556ab5f605
[2]
https://elixir.bootlin.com/linux/latest/source/drivers/media/i2c/ov5670.c#L1751
Hi Daniel,
Thank you for the patch.
On Fri, Mar 12, 2021 at 10:32:39AM +0000, Daniel Scally wrote:
> The OV5693 is a 5 Mpx CMOS image sensor, connected via MIPI CSI-2. The
> chip is capable of a single lane configuration, but currently only two
> lanes are supported.
>
> Most of the sensor's features are supported, with the main exception
> being the lens correction algorithm.
>
> The driver provides all mandatory, optional and recommended V4L2 controls
> for maximum compatibility with libcamera.
>
> Signed-off-by: Daniel Scally <[email protected]>
> ---
> MAINTAINERS | 7 +
> drivers/media/i2c/Kconfig | 11 +
> drivers/media/i2c/Makefile | 1 +
> drivers/media/i2c/ov5693.c | 1585 ++++++++++++++++++++++++++++++++++++
> 4 files changed, 1604 insertions(+)
> create mode 100644 drivers/media/i2c/ov5693.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index cf44b3e77b90..34311d55b189 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -13140,6 +13140,13 @@ S: Maintained
> T: git git://linuxtv.org/media_tree.git
> F: drivers/media/i2c/ov5675.c
>
> +OMNIVISION OV5693 SENSOR DRIVER
> +M: Daniel Scally <[email protected]>
> +L: [email protected]
> +S: Maintained
> +T: git git://linuxtv.org/media_tree.git
> +F: drivers/media/i2c/ov5693.c
> +
> OMNIVISION OV5695 SENSOR DRIVER
> M: Shunqian Zheng <[email protected]>
> L: [email protected]
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 4c1ae687ab10..4da2278ec84c 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -985,6 +985,17 @@ config VIDEO_OV5675
> To compile this driver as a module, choose M here: the
> module will be called ov5675.
>
> +config VIDEO_OV5693
> + tristate "OmniVision OV5693 sensor support"
> + depends on I2C && VIDEO_V4L2
> + select V4L2_FWNODE
> + help
> + This is a Video4Linux2 sensor driver for the OmniVision
> + OV5693 camera.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called ov5693.
> +
> config VIDEO_OV5695
> tristate "OmniVision OV5695 sensor support"
> depends on I2C && VIDEO_V4L2
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index 65cfc94d25b6..7df680e110c9 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -75,6 +75,7 @@ obj-$(CONFIG_VIDEO_OV5647) += ov5647.o
> obj-$(CONFIG_VIDEO_OV5648) += ov5648.o
> obj-$(CONFIG_VIDEO_OV5670) += ov5670.o
> obj-$(CONFIG_VIDEO_OV5675) += ov5675.o
> +obj-$(CONFIG_VIDEO_OV5693) += ov5693.o
> obj-$(CONFIG_VIDEO_OV5695) += ov5695.o
> obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
> obj-$(CONFIG_VIDEO_OV7251) += ov7251.o
> diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
> new file mode 100644
> index 000000000000..0460371164ea
> --- /dev/null
> +++ b/drivers/media/i2c/ov5693.c
> @@ -0,0 +1,1585 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
> + *
> + * Adapted from the atomisp-ov5693 driver, with contributions from:
> + *
> + * Daniel Scally
> + * Jean-Michel Hautbois
> + * Fabian Wuthrich
> + * Tsuchiya Yuto
> + * Jordan Hand
> + * Jake Day
> + */
> +
> +#include <linux/acpi.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/device.h>
> +#include <linux/i2c.h>
> +#include <linux/module.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/slab.h>
> +#include <linux/types.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-ctrls.h>
You've nearly mastered the alphabetical order ;-)
> +
> +/* System Control */
> +#define OV5693_SW_RESET_REG 0x0103
> +#define OV5693_SW_STREAM_REG 0x0100
> +#define OV5693_START_STREAMING 0x01
> +#define OV5693_STOP_STREAMING 0x00
> +#define OV5693_SW_RESET 0x01
> +
> +#define OV5693_REG_CHIP_ID_H 0x300A
> +#define OV5693_REG_CHIP_ID_L 0x300B
> +/* Yes, this is right. The datasheet for the OV5693 gives its ID as 0x5690 */
> +#define OV5693_CHIP_ID 0x5690
> +
> +/* Exposure */
> +#define OV5693_EXPOSURE_L_CTRL_HH_REG 0x3500
> +#define OV5693_EXPOSURE_L_CTRL_H_REG 0x3501
> +#define OV5693_EXPOSURE_L_CTRL_L_REG 0x3502
> +#define OV5693_EXPOSURE_S_CTRL_HH_REG 0x3506
> +#define OV5693_EXPOSURE_S_CTRL_H_REG 0x3507
> +#define OV5693_EXPOSURE_S_CTRL_L_REG 0x3508
> +#define OV5693_EXPOSURE_CTRL_HH(v) (((v) & GENMASK(14, 12)) >> 12)
> +#define OV5693_EXPOSURE_CTRL_H(v) (((v) & GENMASK(11, 4)) >> 4)
> +#define OV5693_EXPOSURE_CTRL_L(v) (((v) & GENMASK(3, 0)) << 4)
> +#define OV5693_INTEGRATION_TIME_MARGIN 8
> +#define OV5693_EXPOSURE_MIN 1
> +#define OV5693_EXPOSURE_STEP 1
> +
> +/* Analogue Gain */
> +#define OV5693_GAIN_CTRL_H_REG 0x350A
> +#define OV5693_GAIN_CTRL_H(v) (((v) >> 4) & GENMASK(2, 0))
> +#define OV5693_GAIN_CTRL_L_REG 0x350B
> +#define OV5693_GAIN_CTRL_L(v) (((v) << 4) & GENMASK(7, 4))
> +#define OV5693_GAIN_MIN 1
> +#define OV5693_GAIN_MAX 127
> +#define OV5693_GAIN_DEF 8
> +#define OV5693_GAIN_STEP 1
> +
> +/* Digital Gain */
> +#define OV5693_MWB_RED_GAIN_H_REG 0x3400
> +#define OV5693_MWB_RED_GAIN_L_REG 0x3401
> +#define OV5693_MWB_GREEN_GAIN_H_REG 0x3402
> +#define OV5693_MWB_GREEN_GAIN_L_REG 0x3403
> +#define OV5693_MWB_BLUE_GAIN_H_REG 0x3404
> +#define OV5693_MWB_BLUE_GAIN_L_REG 0x3405
> +#define OV5693_MWB_GAIN_H_CTRL(v) (((v) >> 8) & GENMASK(3, 0))
> +#define OV5693_MWB_GAIN_L_CTRL(v) ((v) & GENMASK(7, 0))
> +#define OV5693_MWB_GAIN_MAX 0x0fff
> +#define OV5693_DIGITAL_GAIN_MIN 1
> +#define OV5693_DIGITAL_GAIN_MAX 4095
> +#define OV5693_DIGITAL_GAIN_DEF 1024
> +#define OV5693_DIGITAL_GAIN_STEP 1
> +
> +/* Timing and Format */
> +#define OV5693_CROP_START_X_H_REG 0x3800
> +#define OV5693_CROP_START_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
> +#define OV5693_CROP_START_X_L_REG 0x3801
> +#define OV5693_CROP_START_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_CROP_START_Y_H_REG 0x3802
> +#define OV5693_CROP_START_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
> +#define OV5693_CROP_START_Y_L_REG 0x3803
> +#define OV5693_CROP_START_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_CROP_END_X_H_REG 0x3804
> +#define OV5693_CROP_END_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
> +#define OV5693_CROP_END_X_L_REG 0x3805
> +#define OV5693_CROP_END_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_CROP_END_Y_H_REG 0x3806
> +#define OV5693_CROP_END_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
> +#define OV5693_CROP_END_Y_L_REG 0x3807
> +#define OV5693_CROP_END_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_OUTPUT_SIZE_X_H_REG 0x3808
> +#define OV5693_OUTPUT_SIZE_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OUTPUT_SIZE_X_L_REG 0x3809
> +#define OV5693_OUTPUT_SIZE_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_OUTPUT_SIZE_Y_H_REG 0x380a
> +#define OV5693_OUTPUT_SIZE_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OUTPUT_SIZE_Y_L_REG 0x380b
> +#define OV5693_OUTPUT_SIZE_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_TIMING_HTS_H_REG 0x380c
> +#define OV5693_TIMING_HTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_TIMING_HTS_L_REG 0x380d
> +#define OV5693_TIMING_HTS_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_TIMING_VTS_H_REG 0x380e
> +#define OV5693_TIMING_VTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_TIMING_VTS_L_REG 0x380f
> +#define OV5693_TIMING_VTS_L(v) ((v) & GENMASK(7, 0))
> +#define OV5693_TIMING_MAX_VTS 0xffff
> +#define OV5693_TIMING_MIN_VTS 0x04
> +
> +#define OV5693_OFFSET_START_X_H_REG 0x3810
> +#define OV5693_OFFSET_START_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OFFSET_START_X_L_REG 0x3811
> +#define OV5693_OFFSET_START_X_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_OFFSET_START_Y_H_REG 0x3812
> +#define OV5693_OFFSET_START_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
> +#define OV5693_OFFSET_START_Y_L_REG 0x3813
> +#define OV5693_OFFSET_START_Y_L(v) ((v) & GENMASK(7, 0))
> +
> +#define OV5693_SUB_INC_X_REG 0x3814
> +#define OV5693_SUB_INC_Y_REG 0x3815
> +
> +#define OV5693_FORMAT1_REG 0x3820
> +#define OV5693_FORMAT1_FLIP_VERT_ISP_EN BIT(2)
> +#define OV5693_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1)
> +#define OV5693_FORMAT1_VBIN_EN BIT(0)
> +#define OV5693_FORMAT2_REG 0x3821
> +#define OV5693_FORMAT2_HDR_EN BIT(7)
> +#define OV5693_FORMAT2_FLIP_HORZ_ISP_EN BIT(2)
> +#define OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1)
> +#define OV5693_FORMAT2_HBIN_EN BIT(0)
> +
> +#define OV5693_ISP_CTRL2_REG 0x5002
> +#define OV5693_ISP_SCALE_ENABLE BIT(7)
> +
> +/* Pixel Array */
> +#define OV5693_NATIVE_WIDTH 2624U
> +#define OV5693_NATIVE_HEIGHT 1956U
> +#define OV5693_ACTIVE_START_LEFT 16U
> +#define OV5693_ACTIVE_START_TOP 6U
> +#define OV5693_ACTIVE_WIDTH 2592U
> +#define OV5693_ACTIVE_HEIGHT 1944U
> +
> +/* Test Pattern */
> +#define OV5693_TEST_PATTERN_REG 0x5e00
> +#define OV5693_TEST_PATTERN_ENABLE BIT(7)
> +#define OV5693_TEST_PATTERN_ROLLING BIT(6)
> +#define OV5693_TEST_PATTERN_RANDOM 0x01
> +#define OV5693_TEST_PATTERN_BARS 0x00
> +
> +/* System Frequencies */
> +#define OV5693_XVCLK_FREQ 19200000
> +#define OV5693_LINK_FREQ_400MHZ 400000000
> +#define OV5693_PIXEL_RATE 160000000
> +
> +/* Miscellaneous */
> +#define OV5693_NUM_MBUS_FMTS 1
> +#define OV5693_NUM_SUPPLIES 2
> +
> +#define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd)
> +
> +struct ov5693_reg {
> + u16 reg;
> + u8 val;
> +};
> +
> +struct ov5693_reg_list {
> + u32 num_regs;
> + const struct ov5693_reg *regs;
> +};
> +
> +struct ov5693_resolution {
> + char *desc;
> + int fps;
> +
> + struct v4l2_rect crop;
> +
> + unsigned int crop_start_x;
> + unsigned int offset_x;
> + unsigned int output_size_x;
> + unsigned int crop_end_x;
> + unsigned int hts;
> +
> + unsigned int crop_start_y;
> + unsigned int offset_y;
> + unsigned int output_size_y;
> + unsigned int crop_end_y;
> + unsigned int vts;
> +
> + unsigned int inc_x_odd;
> + unsigned int inc_x_even;
> + unsigned int inc_y_odd;
> + unsigned int inc_y_even;
> +
> + bool binning_x;
> + bool binning_y;
> + bool scale_enable;
> +};
> +
> +struct ov5693_device {
> + struct i2c_client *client;
> + struct device *dev;
> +
> + /* Protect against concurrent changes to controls */
> + struct mutex lock;
> +
> + struct gpio_desc *reset;
> + struct gpio_desc *powerdown;
> + struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES];
> + struct clk *clk;
> +
> + const struct ov5693_resolution *mode;
> + bool streaming;
> +
> + struct v4l2_subdev sd;
> + struct media_pad pad;
> +
> + struct ov5693_v4l2_ctrls {
> + struct v4l2_ctrl_handler handler;
> + struct v4l2_ctrl *link_freq;
> + struct v4l2_ctrl *pixel_rate;
> + struct v4l2_ctrl *exposure;
> + struct v4l2_ctrl *analogue_gain;
> + struct v4l2_ctrl *digital_gain;
> + struct v4l2_ctrl *hflip;
> + struct v4l2_ctrl *vflip;
> + struct v4l2_ctrl *hblank;
> + struct v4l2_ctrl *vblank;
> + struct v4l2_ctrl *test_pattern;
> + } ctrls;
> +};
> +
> +static const struct ov5693_reg ov5693_global_regs[] = {
> + {0x0103, 0x01},
> + {0x3016, 0xf0},
> + {0x3017, 0xf0},
> + {0x3018, 0xf0},
> + {0x3022, 0x01},
> + {0x3028, 0x44},
> + {0x3098, 0x02},
> + {0x3099, 0x19},
> + {0x309a, 0x02},
> + {0x309b, 0x01},
> + {0x309c, 0x00},
> + {0x30a0, 0xd2},
> + {0x30a2, 0x01},
> + {0x30b2, 0x00},
> + {0x30b3, 0x7d},
> + {0x30b4, 0x03},
> + {0x30b5, 0x04},
> + {0x30b6, 0x01},
> + {0x3104, 0x21},
> + {0x3106, 0x00},
> + {0x3406, 0x01},
> + {0x3503, 0x07},
> + {0x350b, 0x40},
> + {0x3601, 0x0a},
> + {0x3602, 0x38},
> + {0x3612, 0x80},
> + {0x3620, 0x54},
> + {0x3621, 0xc7},
> + {0x3622, 0x0f},
> + {0x3625, 0x10},
> + {0x3630, 0x55},
> + {0x3631, 0xf4},
> + {0x3632, 0x00},
> + {0x3633, 0x34},
> + {0x3634, 0x02},
> + {0x364d, 0x0d},
> + {0x364f, 0xdd},
> + {0x3660, 0x04},
> + {0x3662, 0x10},
> + {0x3663, 0xf1},
> + {0x3665, 0x00},
> + {0x3666, 0x20},
> + {0x3667, 0x00},
> + {0x366a, 0x80},
> + {0x3680, 0xe0},
> + {0x3681, 0x00},
> + {0x3700, 0x42},
> + {0x3701, 0x14},
> + {0x3702, 0xa0},
> + {0x3703, 0xd8},
> + {0x3704, 0x78},
> + {0x3705, 0x02},
> + {0x370a, 0x00},
> + {0x370b, 0x20},
> + {0x370c, 0x0c},
> + {0x370d, 0x11},
> + {0x370e, 0x00},
> + {0x370f, 0x40},
> + {0x3710, 0x00},
> + {0x371a, 0x1c},
> + {0x371b, 0x05},
> + {0x371c, 0x01},
> + {0x371e, 0xa1},
> + {0x371f, 0x0c},
> + {0x3721, 0x00},
> + {0x3724, 0x10},
> + {0x3726, 0x00},
> + {0x372a, 0x01},
> + {0x3730, 0x10},
> + {0x3738, 0x22},
> + {0x3739, 0xe5},
> + {0x373a, 0x50},
> + {0x373b, 0x02},
> + {0x373c, 0x41},
> + {0x373f, 0x02},
> + {0x3740, 0x42},
> + {0x3741, 0x02},
> + {0x3742, 0x18},
> + {0x3743, 0x01},
> + {0x3744, 0x02},
> + {0x3747, 0x10},
> + {0x374c, 0x04},
> + {0x3751, 0xf0},
> + {0x3752, 0x00},
> + {0x3753, 0x00},
> + {0x3754, 0xc0},
> + {0x3755, 0x00},
> + {0x3756, 0x1a},
> + {0x3758, 0x00},
> + {0x3759, 0x0f},
> + {0x376b, 0x44},
> + {0x375c, 0x04},
> + {0x3774, 0x10},
> + {0x3776, 0x00},
> + {0x377f, 0x08},
> + {0x3780, 0x22},
> + {0x3781, 0x0c},
> + {0x3784, 0x2c},
> + {0x3785, 0x1e},
> + {0x378f, 0xf5},
> + {0x3791, 0xb0},
> + {0x3795, 0x00},
> + {0x3796, 0x64},
> + {0x3797, 0x11},
> + {0x3798, 0x30},
> + {0x3799, 0x41},
> + {0x379a, 0x07},
> + {0x379b, 0xb0},
> + {0x379c, 0x0c},
> + {0x3a04, 0x06},
> + {0x3a05, 0x14},
> + {0x3e07, 0x20},
> + {0x4000, 0x08},
> + {0x4001, 0x04},
> + {0x4004, 0x08},
> + {0x4006, 0x20},
> + {0x4008, 0x24},
> + {0x4009, 0x10},
> + {0x4058, 0x00},
> + {0x4101, 0xb2},
> + {0x4307, 0x31},
> + {0x4511, 0x05},
> + {0x4512, 0x01},
> + {0x481f, 0x30},
> + {0x4826, 0x2c},
> + {0x4d02, 0xfd},
> + {0x4d03, 0xf5},
> + {0x4d04, 0x0c},
> + {0x4d05, 0xcc},
> + {0x4837, 0x0a},
> + {0x5003, 0x20},
> + {0x5013, 0x00},
> + {0x5842, 0x01},
> + {0x5843, 0x2b},
> + {0x5844, 0x01},
> + {0x5845, 0x92},
> + {0x5846, 0x01},
> + {0x5847, 0x8f},
> + {0x5848, 0x01},
> + {0x5849, 0x0c},
> + {0x5e10, 0x0c},
> + {0x3820, 0x00},
> + {0x3821, 0x1e},
> + {0x5041, 0x14}
> +};
> +
> +static const struct ov5693_reg_list ov5693_global_setting = {
> + .num_regs = ARRAY_SIZE(ov5693_global_regs),
> + .regs = ov5693_global_regs,
> +};
> +
> +#define OV5693_NUM_RESOLUTIONS ARRAY_SIZE(ov5693_resolutions)
> +struct ov5693_resolution ov5693_resolutions[] = {
Could we avoid making this driver mode-based, given that we program
registers manually with the crop rectangle and binning configuration ?
We could implement the .set_selection() operation to configure the crop
rectangle, and control binning as the ratio between the crop rectangle
size and the output size.
> + {
> + .desc = "ov5693_2592x1944_30fps",
> + .fps = 30,
> +
> + .crop_start_x = 16,
> + .offset_x = 0,
> + .output_size_x = 2592,
> + .crop_end_x = 2608,
> + .hts = 2688,
> +
> + .crop_start_y = 6,
> + .offset_y = 0,
> + .output_size_y = 1944,
> + .crop_end_y = 1950,
> + .vts = 1984,
> +
> + .inc_x_odd = 1,
> + .inc_x_even = 1,
> + .inc_y_odd = 1,
> + .inc_y_even = 1,
> +
> + .crop = {
> + .left = 16,
> + .top = 6,
> + .width = 2592,
> + .height = 1944
> + },
> + },
> + {
> + .desc = "ov5693_1920x1080_30fps",
> + .fps = 30,
> +
> + .crop_start_x = 16,
> + .offset_x = 0,
> + .output_size_x = 1920,
> + .crop_end_x = 2608,
> + .hts = 2688,
> +
> + .crop_start_y = 249,
> + .offset_y = 0,
> + .output_size_y = 1080,
> + .crop_end_y = 1707,
> + .vts = 1984,
> +
> + .scale_enable = true,
> +
> + .inc_x_odd = 1,
> + .inc_x_even = 1,
> + .inc_y_odd = 1,
> + .inc_y_even = 1,
> +
> + .crop = {
> + .left = 16,
> + .top = 249,
> + .width = 2592,
> + .height = 1458
> + },
> + },
> + {
> + .desc = "ov5693_1280x720_60fps",
> + .fps = 60,
> +
> + .crop_start_x = 32,
> + .offset_x = 0,
> + .output_size_x = 1280,
> + .crop_end_x = 2592,
> + .binning_x = true,
> + .hts = 2688,
> +
> + .crop_start_y = 252,
> + .offset_y = 0,
> + .output_size_y = 720,
> + .crop_end_y = 1692,
> + .binning_y = true,
> + .vts = 992,
> +
> + .inc_x_odd = 3,
> + .inc_x_even = 1,
> + .inc_y_odd = 3,
> + .inc_y_even = 1,
> +
> + .crop = {
> + .left = 32,
> + .top = 252,
> + .width = 2560,
> + .height = 1440
> + },
> + }
> +};
> +
> +static const s64 link_freq_menu_items[] = {
> + OV5693_LINK_FREQ_400MHZ
> +};
> +
> +static const char * const ov5693_supply_names[] = {
> + "avdd",
> + "dovdd",
> +};
> +
> +static const char * const ov5693_test_pattern_menu[] = {
> + "Disabled",
> + "Random Data",
> + "Colour Bars",
> + "Colour Bars with Rolling Bar"
> +};
> +
> +static const u8 ov5693_test_pattern_bits[] = {
> + 0,
> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM,
> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS,
> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS |
> + OV5693_TEST_PATTERN_ROLLING,
> +};
> +
> +/* I2C I/O Operations */
> +
> +static int ov5693_read_reg(struct ov5693_device *ov5693, u16 addr, u8 *value)
> +{
> + unsigned char data[2] = { addr >> 8, addr & 0xff };
> + struct i2c_client *client = ov5693->client;
> + int ret;
> +
> + ret = i2c_master_send(client, data, sizeof(data));
> + if (ret < 0) {
> + dev_dbg(&client->dev, "i2c send error at address 0x%04x\n",
> + addr);
> + return ret;
> + }
> +
> + ret = i2c_master_recv(client, value, 1);
> + if (ret < 0) {
> + dev_dbg(&client->dev, "i2c recv error at address 0x%04x\n",
> + addr);
> + return ret;
> + }
This would allow another bus master to access the bus between the write
and the read. You should instead use i2c_transfer() with two messages.
> +
> + return 0;
> +}
> +
> +static void ov5693_write_reg(struct ov5693_device *ov5693, u16 addr, u8 value,
> + int *error)
> +{
> + unsigned char data[3] = { addr >> 8, addr & 0xff, value };
> + int ret;
> +
> + if (*error < 0)
> + return;
> +
> + ret = i2c_master_send(ov5693->client, data, sizeof(data));
> + if (ret < 0) {
> + dev_dbg(ov5693->dev, "i2c send error at address 0x%04x: %d\n",
> + addr, ret);
> + *error = ret;
> + }
> +}
> +
> +static int ov5693_write_reg_array(struct ov5693_device *ov5693,
> + const struct ov5693_reg_list *reglist)
> +{
> + unsigned int i;
> + int ret = 0;
> +
> + for (i = 0; i < reglist->num_regs; i++)
> + ov5693_write_reg(ov5693, reglist->regs[i].reg,
> + reglist->regs[i].val, &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_update_bits(struct ov5693_device *ov5693, u16 address,
> + u16 mask, u16 bits)
> +{
> + u8 value = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, address, &value);
> + if (ret)
> + return ret;
> +
> + value &= ~mask;
> + value |= bits;
> +
> + ov5693_write_reg(ov5693, address, value, &ret);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +
> +/* V4L2 Controls Functions */
> +
> +static int ov5693_flip_vert_configure(struct ov5693_device *ov5693, bool enable)
> +{
> + u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN |
> + OV5693_FORMAT1_FLIP_VERT_SENSOR_EN;
> + int ret;
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG, bits,
> + enable ? bits : 0);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int ov5693_flip_horz_configure(struct ov5693_device *ov5693, bool enable)
> +{
> + u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN |
> + OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN;
> + int ret;
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG, bits,
> + enable ? bits : 0);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value)
> +{
> + u8 exposure_hh = 0, exposure_h = 0, exposure_l = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG, &exposure_hh);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG, &exposure_h);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG, &exposure_l);
> + if (ret)
> + return ret;
> +
> + /* The lowest 4 bits are unsupported fractional bits */
> + *value = ((exposure_hh << 16) | (exposure_h << 8) | exposure_l) >> 4;
> +
> + return 0;
> +}
> +
> +static int ov5693_exposure_configure(struct ov5693_device *ov5693, u32 exposure)
> +{
> + int ret = 0;
> +
> + /* Enable HDR Mode to access "short" exposure */
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
> + OV5693_FORMAT2_HDR_EN, OV5693_FORMAT2_HDR_EN);
> + if (ret)
> + return ret;
> +
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG,
> + OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG,
> + OV5693_EXPOSURE_CTRL_H(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG,
> + OV5693_EXPOSURE_CTRL_L(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_HH_REG,
> + OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_H_REG,
> + OV5693_EXPOSURE_CTRL_H(exposure), &ret);
> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_L_REG,
> + OV5693_EXPOSURE_CTRL_L(exposure), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain)
> +{
> + u8 gain_l = 0, gain_h = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_H_REG, &gain_h);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_L_REG, &gain_l);
> + if (ret)
> + return ret;
> +
> + /* As with exposure, the lowest 4 bits are fractional bits. */
> + *gain = ((gain_h << 8) | gain_l) >> 4;
> +
> + return ret;
> +}
> +
> +static int ov5693_digital_gain_configure(struct ov5693_device *ov5693, u32 gain)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_H_REG,
> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_L_REG,
> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_H_REG,
> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_L_REG,
> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_H_REG,
> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_L_REG,
> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_L_REG,
> + OV5693_GAIN_CTRL_L(gain), &ret);
> + ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_H_REG,
> + OV5693_GAIN_CTRL_H(gain), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank)
> +{
> + u16 vts = ov5693->mode->output_size_y + vblank;
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
> + OV5693_TIMING_VTS_H(vts), &ret);
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
> + OV5693_TIMING_VTS_L(vts), &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_TEST_PATTERN_REG,
> + ov5693_test_pattern_bits[idx], &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct ov5693_device *ov5693 =
> + container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
> + int ret = 0;
> +
> + /* If VBLANK is altered we need to update exposure to compensate */
> + if (ctrl->id == V4L2_CID_VBLANK) {
> + int exposure_max;
> +
> + exposure_max = ov5693->mode->output_size_y + ctrl->val -
> + OV5693_INTEGRATION_TIME_MARGIN;
> + __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
> + ov5693->ctrls.exposure->minimum,
> + exposure_max, ov5693->ctrls.exposure->step,
> + ov5693->ctrls.exposure->val < exposure_max ?
> + ov5693->ctrls.exposure->val : exposure_max);
> + }
> +
> + /* Only apply changes to the controls if the device is powered up */
> + if (!pm_runtime_get_if_in_use(ov5693->dev))
> + return 0;
> +
> + switch (ctrl->id) {
> + case V4L2_CID_EXPOSURE:
> + ret = ov5693_exposure_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_ANALOGUE_GAIN:
> + ret = ov5693_analog_gain_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_DIGITAL_GAIN:
> + ret = ov5693_digital_gain_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_HFLIP:
> + ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val);
> + break;
> + case V4L2_CID_VFLIP:
> + ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val);
> + break;
> + case V4L2_CID_VBLANK:
> + ret = ov5693_vts_configure(ov5693, ctrl->val);
> + break;
> + case V4L2_CID_TEST_PATTERN:
> + ret = ov5693_test_pattern_configure(ov5693, ctrl->val);
> + break;
> + default:
> + ret = -EINVAL;
> + }
> +
> + pm_runtime_put(ov5693->dev);
> +
> + return ret;
> +}
> +
> +static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct ov5693_device *ov5693 =
> + container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
> +
> + switch (ctrl->id) {
> + case V4L2_CID_EXPOSURE_ABSOLUTE:
> + return ov5693_get_exposure(ov5693, &ctrl->val);
> + case V4L2_CID_AUTOGAIN:
> + return ov5693_get_gain(ov5693, &ctrl->val);
> + default:
> + return -EINVAL;
> + }
> +}
> +
> +static const struct v4l2_ctrl_ops ov5693_ctrl_ops = {
> + .s_ctrl = ov5693_s_ctrl,
> + .g_volatile_ctrl = ov5693_g_volatile_ctrl
> +};
> +
> +/* System Control Functions */
> +
> +static int ov5693_mode_configure(struct ov5693_device *ov5693)
> +{
> + const struct ov5693_resolution *mode = ov5693->mode;
> + int ret = 0;
> +
> + /* Crop Start X */
> + ov5693_write_reg(ov5693, OV5693_CROP_START_X_H_REG,
> + OV5693_CROP_START_X_H(mode->crop_start_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_START_X_L_REG,
> + OV5693_CROP_START_X_L(mode->crop_start_x), &ret);
> +
> + /* Offset X */
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_H_REG,
> + OV5693_OFFSET_START_X_H(mode->offset_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_L_REG,
> + OV5693_OFFSET_START_X_L(mode->offset_x), &ret);
> +
> + /* Output Size X */
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_H_REG,
> + OV5693_OUTPUT_SIZE_X_H(mode->output_size_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_L_REG,
> + OV5693_OUTPUT_SIZE_X_L(mode->output_size_x), &ret);
> +
> + /* Crop End X */
> + ov5693_write_reg(ov5693, OV5693_CROP_END_X_H_REG,
> + OV5693_CROP_END_X_H(mode->crop_end_x), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_END_X_L_REG,
> + OV5693_CROP_END_X_L(mode->crop_end_x), &ret);
> +
> + /* Horizontal Total Size */
> + ov5693_write_reg(ov5693, OV5693_TIMING_HTS_H_REG,
> + OV5693_TIMING_HTS_H(mode->hts), &ret);
> + ov5693_write_reg(ov5693, OV5693_TIMING_HTS_L_REG,
> + OV5693_TIMING_HTS_L(mode->hts), &ret);
> +
> + /* Crop Start Y */
> + ov5693_write_reg(ov5693, OV5693_CROP_START_Y_H_REG,
> + OV5693_CROP_START_Y_H(mode->crop_start_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_START_Y_L_REG,
> + OV5693_CROP_START_Y_L(mode->crop_start_y), &ret);
> +
> + /* Offset Y */
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_H_REG,
> + OV5693_OFFSET_START_Y_H(mode->offset_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_L_REG,
> + OV5693_OFFSET_START_Y_L(mode->offset_y), &ret);
> +
> + /* Output Size Y */
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_H_REG,
> + OV5693_OUTPUT_SIZE_Y_H(mode->output_size_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_L_REG,
> + OV5693_OUTPUT_SIZE_Y_L(mode->output_size_y), &ret);
> +
> + /* Crop End Y */
> + ov5693_write_reg(ov5693, OV5693_CROP_END_Y_H_REG,
> + OV5693_CROP_END_Y_H(mode->crop_end_y), &ret);
> + ov5693_write_reg(ov5693, OV5693_CROP_END_Y_L_REG,
> + OV5693_CROP_END_Y_L(mode->crop_end_y), &ret);
> +
> + /* Vertical Total Size */
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
> + OV5693_TIMING_VTS_H(mode->vts), &ret);
> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
> + OV5693_TIMING_VTS_L(mode->vts), &ret);
> +
> + /* Subsample X increase */
> + ov5693_write_reg(ov5693, OV5693_SUB_INC_X_REG,
> + ((mode->inc_x_odd << 4) & 0xf0) |
> + (mode->inc_x_even & 0x0f), &ret);
> + /* Subsample Y increase */
> + ov5693_write_reg(ov5693, OV5693_SUB_INC_Y_REG,
> + ((mode->inc_y_odd << 4) & 0xf0) |
> + (mode->inc_y_even & 0x0f), &ret);
> +
> + if (ret)
> + return ret;
> +
> + /* Binning */
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG,
> + OV5693_FORMAT1_VBIN_EN,
> + mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
> + OV5693_FORMAT2_HBIN_EN,
> + mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0);
> + if (ret)
> + return ret;
> +
> + /* Scaler */
> + ret = ov5693_update_bits(ov5693, OV5693_ISP_CTRL2_REG,
> + OV5693_ISP_SCALE_ENABLE,
> + mode->scale_enable ? OV5693_ISP_SCALE_ENABLE : 0);
> + if (ret)
> + return ret;
> +
> + return ret;
> +}
> +
> +static int ov5693_sw_standby(struct ov5693_device *ov5693, bool standby)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_SW_STREAM_REG,
> + standby ? OV5693_STOP_STREAMING : OV5693_START_STREAMING,
> + &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_sw_reset(struct ov5693_device *ov5693)
> +{
> + int ret = 0;
> +
> + ov5693_write_reg(ov5693, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret);
> +
> + return ret;
> +}
> +
> +static int ov5693_sensor_init(struct ov5693_device *ov5693)
> +{
> + int ret = 0;
> +
> + ret = ov5693_sw_reset(ov5693);
> + if (ret) {
> + dev_err(ov5693->dev, "%s software reset error\n", __func__);
> + return ret;
> + }
> +
> + ret = ov5693_write_reg_array(ov5693, &ov5693_global_setting);
> + if (ret) {
> + dev_err(ov5693->dev, "%s global settings error\n", __func__);
> + return ret;
> + }
> +
> + ret = ov5693_mode_configure(ov5693);
> + if (ret) {
> + dev_err(ov5693->dev, "%s mode configure error\n", __func__);
> + return ret;
> + }
> +
> + ret = ov5693_sw_standby(ov5693, true);
> + if (ret)
> + dev_err(ov5693->dev, "%s software standby error\n", __func__);
> +
> + return ret;
> +}
> +
> +static void ov5693_sensor_powerdown(struct ov5693_device *ov5693)
> +{
> + gpiod_set_value_cansleep(ov5693->reset, 1);
> + gpiod_set_value_cansleep(ov5693->powerdown, 1);
> +
> + regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies);
> +
> + clk_disable_unprepare(ov5693->clk);
> +}
> +
> +static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
> +{
> + int ret = 0;
> +
> + gpiod_set_value_cansleep(ov5693->reset, 1);
> + gpiod_set_value_cansleep(ov5693->powerdown, 1);
> +
> + ret = clk_prepare_enable(ov5693->clk);
> + if (ret) {
> + dev_err(ov5693->dev, "Failed to enable clk\n");
> + goto fail_power;
> + }
> +
> + ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies);
> + if (ret) {
> + dev_err(ov5693->dev, "Failed to enable regulators\n");
> + goto fail_power;
> + }
> +
> + gpiod_set_value_cansleep(ov5693->reset, 0);
> + gpiod_set_value_cansleep(ov5693->powerdown, 0);
> +
> + usleep_range(20000, 25000);
> +
> + return 0;
> +
> +fail_power:
> + ov5693_sensor_powerdown(ov5693);
> + return ret;
> +}
> +
> +static int __maybe_unused ov5693_sensor_suspend(struct device *dev)
> +{
> + struct v4l2_subdev *sd = dev_get_drvdata(dev);
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + int ret;
> +
> + mutex_lock(&ov5693->lock);
> +
> + if (ov5693->streaming) {
> + ret = ov5693_sw_standby(ov5693, true);
> + if (ret)
> + goto out_unlock;
> + }
> +
> + ov5693_sensor_powerdown(ov5693);
> +
> +out_unlock:
> + mutex_unlock(&ov5693->lock);
> + return ret;
> +}
> +
> +static int __maybe_unused ov5693_sensor_resume(struct device *dev)
> +{
> + struct v4l2_subdev *sd = dev_get_drvdata(dev);
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + int ret;
> +
> + mutex_lock(&ov5693->lock);
> +
> + ret = ov5693_sensor_powerup(ov5693);
> + if (ret)
> + goto out_unlock;
> +
> + ret = ov5693_sensor_init(ov5693);
> + if (ret) {
> + dev_err(dev, "ov5693 sensor init failure\n");
> + goto err_power;
> + }
> +
> + if (ov5693->streaming) {
> + ret = ov5693_sw_standby(ov5693, false);
> + if (ret)
> + goto err_power;
> + }
> +
> + goto out_unlock;
> +
> +err_power:
> + ov5693_sensor_powerdown(ov5693);
> +out_unlock:
> + mutex_unlock(&ov5693->lock);
> + return ret;
> +}
> +
> +static int ov5693_detect(struct ov5693_device *ov5693)
> +{
> + u8 id_l = 0, id_h = 0;
> + u16 id = 0;
> + int ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_H, &id_h);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_L, &id_l);
> + if (ret)
> + return ret;
> +
> + id = (id_h << 8) | id_l;
> +
> + if (id != OV5693_CHIP_ID) {
> + dev_err(ov5693->dev, "sensor ID mismatch. Found 0x%04x\n", id);
> + return -ENODEV;
> + }
> +
> + return 0;
> +}
> +
> +/* V4L2 Framework callbacks */
> +
> +static int ov5693_set_fmt(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + const struct ov5693_resolution *mode;
> + int exposure_max;
> + int ret = 0;
> + int hblank;
> +
> + if (format->pad)
> + return -EINVAL;
> +
> + mutex_lock(&ov5693->lock);
> +
> + mode = v4l2_find_nearest_size(ov5693_resolutions,
> + OV5693_NUM_RESOLUTIONS, output_size_x,
> + output_size_y, format->format.width,
> + format->format.height);
> +
> + if (!mode)
> + return -EINVAL;
> +
> + format->format.width = mode->output_size_x;
> + format->format.height = mode->output_size_y;
> + format->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
> +
> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
> + *v4l2_subdev_get_try_format(sd, cfg, format->pad) = format->format;
> + goto mutex_unlock;
> + }
> +
> + ov5693->mode = mode;
> +
> + /* Update limits and set FPS to default */
> + __v4l2_ctrl_modify_range(ov5693->ctrls.vblank,
> + OV5693_TIMING_MIN_VTS,
> + OV5693_TIMING_MAX_VTS - mode->output_size_y,
> + 1, mode->vts - mode->output_size_y);
> + __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank,
> + mode->vts - mode->output_size_y);
> +
> + hblank = mode->hts - mode->output_size_x;
> + __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1,
> + hblank);
> +
> + exposure_max = mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
> + __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
> + ov5693->ctrls.exposure->minimum, exposure_max,
> + ov5693->ctrls.exposure->step,
> + ov5693->ctrls.exposure->val < exposure_max ?
> + ov5693->ctrls.exposure->val : exposure_max);
> +
> +mutex_unlock:
> + mutex_unlock(&ov5693->lock);
> + return ret;
> +}
> +
> +static const struct v4l2_rect *
> +__ov5693_get_pad_crop(struct ov5693_device *ov5693, struct v4l2_subdev_pad_config *cfg,
> + unsigned int pad, enum v4l2_subdev_format_whence which)
> +{
> + switch (which) {
> + case V4L2_SUBDEV_FORMAT_TRY:
> + return v4l2_subdev_get_try_crop(&ov5693->sd, cfg, pad);
> + case V4L2_SUBDEV_FORMAT_ACTIVE:
> + return &ov5693->mode->crop;
> + }
> +
> + return NULL;
> +}
> +
> +static int ov5693_get_selection(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_selection *sel)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + switch (sel->target) {
> + case V4L2_SEL_TGT_CROP:
> + mutex_lock(&ov5693->lock);
> + sel->r = *__ov5693_get_pad_crop(ov5693, cfg, sel->pad, sel->which);
> + mutex_unlock(&ov5693->lock);
> + break;
> + case V4L2_SEL_TGT_NATIVE_SIZE:
> + sel->r.top = 0;
> + sel->r.left = 0;
> + sel->r.width = OV5693_NATIVE_WIDTH;
> + sel->r.height = OV5693_NATIVE_HEIGHT;
> + break;
> + case V4L2_SEL_TGT_CROP_BOUNDS:
> + case V4L2_SEL_TGT_CROP_DEFAULT:
> + sel->r.top = OV5693_ACTIVE_START_TOP;
> + sel->r.left = OV5693_ACTIVE_START_LEFT;
> + sel->r.width = OV5693_ACTIVE_WIDTH;
> + sel->r.height = OV5693_ACTIVE_HEIGHT;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int ov5693_get_fmt(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_format *format)
> +{
> + struct v4l2_mbus_framefmt *fmt = &format->format;
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + if (format->pad)
> + return -EINVAL;
> +
> + if (!fmt)
> + return -EINVAL;
> +
> + fmt->width = ov5693->mode->output_size_x;
> + fmt->height = ov5693->mode->output_size_y;
> + fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
> +
> + return 0;
> +}
> +
> +static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> + int ret;
> +
> + if (enable) {
> + ret = pm_runtime_get_sync(ov5693->dev);
> + if (ret < 0)
> + goto err_power_down;
> + }
> +
> + ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler);
> + if (ret)
> + goto err_power_down;
> +
> + mutex_lock(&ov5693->lock);
> + ret = ov5693_sw_standby(ov5693, !enable);
> + mutex_unlock(&ov5693->lock);
> +
> + if (ret)
> + goto err_power_down;
> + ov5693->streaming = !!enable;
> +
> + if (!enable)
> + pm_runtime_put(ov5693->dev);
> +
> + return 0;
> +err_power_down:
> + pm_runtime_put_noidle(ov5693->dev);
> + return ret;
> +}
> +
> +static int ov5693_g_frame_interval(struct v4l2_subdev *sd,
> + struct v4l2_subdev_frame_interval *interval)
> +{
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + interval->interval.numerator = 1;
> + interval->interval.denominator = ov5693->mode->fps;
> +
> + return 0;
> +}
> +
> +static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + if (code->index >= OV5693_NUM_MBUS_FMTS)
> + return -EINVAL;
> +
> + code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
> + return 0;
> +}
> +
> +static int ov5693_enum_frame_size(struct v4l2_subdev *sd,
> + struct v4l2_subdev_pad_config *cfg,
> + struct v4l2_subdev_frame_size_enum *fse)
> +{
> + int index = fse->index;
> +
> + if (index >= OV5693_NUM_RESOLUTIONS)
> + return -EINVAL;
> +
> + fse->min_width = ov5693_resolutions[index].output_size_x;
> + fse->min_height = ov5693_resolutions[index].output_size_y;
> + fse->max_width = ov5693_resolutions[index].output_size_x;
> + fse->max_height = ov5693_resolutions[index].output_size_y;
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_video_ops ov5693_video_ops = {
> + .s_stream = ov5693_s_stream,
> + .g_frame_interval = ov5693_g_frame_interval,
> +};
> +
> +static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
> + .enum_mbus_code = ov5693_enum_mbus_code,
> + .enum_frame_size = ov5693_enum_frame_size,
> + .get_fmt = ov5693_get_fmt,
> + .set_fmt = ov5693_set_fmt,
> + .get_selection = ov5693_get_selection,
> +};
> +
> +static const struct v4l2_subdev_ops ov5693_ops = {
> + .video = &ov5693_video_ops,
> + .pad = &ov5693_pad_ops,
> +};
> +
> +/* Sensor and Driver Configuration Functions */
> +
> +static int ov5693_init_controls(struct ov5693_device *ov5693)
> +{
> + const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops;
> + struct v4l2_fwnode_device_properties props;
> + int vblank_max, vblank_def;
> + int exposure_max;
> + int hblank;
> + int ret;
> +
> + ret = v4l2_ctrl_handler_init(&ov5693->ctrls.handler, 14);
> + if (ret)
> + return ret;
> +
> + /* link freq */
> + ov5693->ctrls.link_freq = v4l2_ctrl_new_int_menu(&ov5693->ctrls.handler,
> + NULL, V4L2_CID_LINK_FREQ,
> + 0, 0, link_freq_menu_items);
> + if (ov5693->ctrls.link_freq)
> + ov5693->ctrls.link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +
> + /* pixel rate */
> + ov5693->ctrls.pixel_rate = v4l2_ctrl_new_std(&ov5693->ctrls.handler, NULL,
> + V4L2_CID_PIXEL_RATE, 0,
> + OV5693_PIXEL_RATE, 1,
> + OV5693_PIXEL_RATE);
> +
> + /* Exposure */
> + exposure_max = ov5693->mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
> + ov5693->ctrls.exposure = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_EXPOSURE,
> + OV5693_EXPOSURE_MIN,
> + exposure_max,
> + OV5693_EXPOSURE_STEP,
> + exposure_max);
> +
> + /* Gain */
> + ov5693->ctrls.analogue_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler,
> + ops, V4L2_CID_ANALOGUE_GAIN,
> + OV5693_GAIN_MIN,
> + OV5693_GAIN_MAX,
> + OV5693_GAIN_STEP,
> + OV5693_GAIN_DEF);
> + ov5693->ctrls.digital_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_DIGITAL_GAIN,
> + OV5693_DIGITAL_GAIN_MIN,
> + OV5693_DIGITAL_GAIN_MAX,
> + OV5693_DIGITAL_GAIN_STEP,
> + OV5693_DIGITAL_GAIN_DEF);
> +
> + /* Flip */
> + ov5693->ctrls.hflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_HFLIP, 0, 1, 1, 0);
> + ov5693->ctrls.vflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_VFLIP, 0, 1, 1, 0);
> +
> + hblank = ov5693->mode->hts - ov5693->mode->output_size_x;
> + ov5693->ctrls.hblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_HBLANK, hblank, hblank,
> + 1, hblank);
> + if (ov5693->ctrls.hblank)
> + ov5693->ctrls.hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +
> + vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode->output_size_y;
> + vblank_def = ov5693->mode->vts - ov5693->mode->output_size_y;
> + ov5693->ctrls.vblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
> + V4L2_CID_VBLANK,
> + OV5693_TIMING_MIN_VTS,
> + vblank_max, 1, vblank_def);
> +
> + ov5693->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items(
> + &ov5693->ctrls.handler, ops, V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(ov5693_test_pattern_menu) - 1,
> + 0, 0, ov5693_test_pattern_menu);
> +
> + if (ov5693->ctrls.handler.error) {
> + dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n");
> + ret = ov5693->ctrls.handler.error;
> + goto err_free_handler;
> + }
> +
> + /* set properties from fwnode (e.g. rotation, orientation) */
> + ret = v4l2_fwnode_device_parse(ov5693->dev, &props);
> + if (ret)
> + goto err_free_handler;
> +
> + ret = v4l2_ctrl_new_fwnode_properties(&ov5693->ctrls.handler, ops,
> + &props);
> + if (ret)
> + goto err_free_handler;
> +
> + /* Use same lock for controls as for everything else. */
> + ov5693->ctrls.handler.lock = &ov5693->lock;
> + ov5693->sd.ctrl_handler = &ov5693->ctrls.handler;
> +
> + return 0;
> +
> +err_free_handler:
> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
> + return ret;
> +}
> +
> +static int ov5693_configure_gpios(struct ov5693_device *ov5693)
> +{
> + ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset",
> + GPIOD_OUT_HIGH);
> + if (IS_ERR(ov5693->reset)) {
> + dev_err(ov5693->dev, "Error fetching reset GPIO\n");
> + return PTR_ERR(ov5693->reset);
> + }
> +
> + ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown",
> + GPIOD_OUT_HIGH);
> + if (IS_ERR(ov5693->powerdown)) {
> + dev_err(ov5693->dev, "Error fetching powerdown GPIO\n");
> + return PTR_ERR(ov5693->powerdown);
> + }
> +
> + return 0;
> +}
> +
> +static int ov5693_get_regulators(struct ov5693_device *ov5693)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < OV5693_NUM_SUPPLIES; i++)
> + ov5693->supplies[i].supply = ov5693_supply_names[i];
> +
> + return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES,
> + ov5693->supplies);
> +}
> +
> +static int ov5693_probe(struct i2c_client *client)
> +{
> + struct fwnode_handle *fwnode = dev_fwnode(&client->dev);
> + struct fwnode_handle *endpoint;
> + struct ov5693_device *ov5693;
> + u32 clk_rate;
> + int ret = 0;
> +
> + endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
> + if (!endpoint && !IS_ERR_OR_NULL(fwnode->secondary))
> + endpoint = fwnode_graph_get_next_endpoint(fwnode->secondary, NULL);
> + if (!endpoint)
> + return -EPROBE_DEFER;
> +
> + ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
> + if (!ov5693)
> + return -ENOMEM;
> +
> + ov5693->client = client;
> + ov5693->dev = &client->dev;
> +
> + mutex_init(&ov5693->lock);
> +
> + v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
> +
> + ov5693->clk = devm_clk_get(&client->dev, "xvclk");
> + if (IS_ERR(ov5693->clk)) {
> + dev_err(&client->dev, "Error getting clock\n");
> + return PTR_ERR(ov5693->clk);
> + }
> +
> + clk_rate = clk_get_rate(ov5693->clk);
> + if (clk_rate != OV5693_XVCLK_FREQ) {
> + dev_err(&client->dev, "Unsupported clk freq %u, expected %u\n",
> + clk_rate, OV5693_XVCLK_FREQ);
> + return -EINVAL;
> + }
> +
> + ret = ov5693_configure_gpios(ov5693);
> + if (ret)
> + return ret;
> +
> + ret = ov5693_get_regulators(ov5693);
> + if (ret) {
> + dev_err(&client->dev, "Error fetching regulators\n");
> + return ret;
> + }
> +
> + ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> + ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
> + ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
> + ov5693->mode = &ov5693_resolutions[OV5693_NUM_RESOLUTIONS - 1];
> +
> + ret = ov5693_init_controls(ov5693);
> + if (ret)
> + return ret;
> +
> + ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad);
> + if (ret)
> + goto err_ctrl_handler_free;
> +
> + /*
> + * We need the driver to work in the event that pm runtime is disable in
> + * the kernel, so power up and verify the chip now. In the event that
> + * runtime pm is disabled this will leave the chip on, so that streaming
> + * will work.
> + */
> +
> + ret = ov5693_sensor_powerup(ov5693);
> + if (ret)
> + goto err_media_entity_cleanup;
> +
> + ret = ov5693_detect(ov5693);
> + if (ret)
> + goto err_powerdown;
> +
> + pm_runtime_set_active(&client->dev);
> + pm_runtime_get_noresume(&client->dev);
> + pm_runtime_enable(&client->dev);
> +
> + ret = v4l2_async_register_subdev_sensor_common(&ov5693->sd);
> + if (ret) {
> + dev_err(&client->dev, "failed to register V4L2 subdev: %d",
> + ret);
> + goto err_pm_runtime;
> + }
> +
> + pm_runtime_set_autosuspend_delay(&client->dev, 1000);
> + pm_runtime_use_autosuspend(&client->dev);
> + pm_runtime_put_autosuspend(&client->dev);
> +
> + return ret;
> +
> +err_pm_runtime:
> + pm_runtime_disable(&client->dev);
> + pm_runtime_put_noidle(&client->dev);
> +err_powerdown:
> + ov5693_sensor_powerdown(ov5693);
> +err_media_entity_cleanup:
> + media_entity_cleanup(&ov5693->sd.entity);
> +err_ctrl_handler_free:
> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
> +
> + return ret;
> +}
> +
> +static int ov5693_remove(struct i2c_client *client)
> +{
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
> +
> + v4l2_async_unregister_subdev(sd);
> + media_entity_cleanup(&ov5693->sd.entity);
> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
> + mutex_destroy(&ov5693->lock);
> +
> + /*
> + * Disable runtime PM. In case runtime PM is disabled in the kernel,
> + * make sure to turn power off manually.
> + */
> + pm_runtime_disable(&client->dev);
> + if (!pm_runtime_status_suspended(&client->dev))
> + ov5693_sensor_powerdown(ov5693);
> + pm_runtime_set_suspended(&client->dev);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops ov5693_pm_ops = {
> + SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL)
> +};
> +
> +static const struct acpi_device_id ov5693_acpi_match[] = {
> + {"INT33BE"},
> + {},
> +};
> +MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
> +
> +static struct i2c_driver ov5693_driver = {
> + .driver = {
> + .name = "ov5693",
> + .acpi_match_table = ov5693_acpi_match,
> + .pm = &ov5693_pm_ops,
> + },
> + .probe_new = ov5693_probe,
> + .remove = ov5693_remove,
> +};
> +module_i2c_driver(ov5693_driver);
> +
> +MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
> +MODULE_LICENSE("GPL");
--
Regards,
Laurent Pinchart
Hi Laurent
On 14/03/2021 23:29, Laurent Pinchart wrote:
> Hi Daniel,
>
> Thank you for the patch.
>
> On Fri, Mar 12, 2021 at 10:32:39AM +0000, Daniel Scally wrote:
>> The OV5693 is a 5 Mpx CMOS image sensor, connected via MIPI CSI-2. The
>> chip is capable of a single lane configuration, but currently only two
>> lanes are supported.
>>
>> Most of the sensor's features are supported, with the main exception
>> being the lens correction algorithm.
>>
>> The driver provides all mandatory, optional and recommended V4L2 controls
>> for maximum compatibility with libcamera.
>>
>> Signed-off-by: Daniel Scally <[email protected]>
>> ---
>> MAINTAINERS | 7 +
>> drivers/media/i2c/Kconfig | 11 +
>> drivers/media/i2c/Makefile | 1 +
>> drivers/media/i2c/ov5693.c | 1585 ++++++++++++++++++++++++++++++++++++
>> 4 files changed, 1604 insertions(+)
>> create mode 100644 drivers/media/i2c/ov5693.c
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index cf44b3e77b90..34311d55b189 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -13140,6 +13140,13 @@ S: Maintained
>> T: git git://linuxtv.org/media_tree.git
>> F: drivers/media/i2c/ov5675.c
>>
>> +OMNIVISION OV5693 SENSOR DRIVER
>> +M: Daniel Scally <[email protected]>
>> +L: [email protected]
>> +S: Maintained
>> +T: git git://linuxtv.org/media_tree.git
>> +F: drivers/media/i2c/ov5693.c
>> +
>> OMNIVISION OV5695 SENSOR DRIVER
>> M: Shunqian Zheng <[email protected]>
>> L: [email protected]
>> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
>> index 4c1ae687ab10..4da2278ec84c 100644
>> --- a/drivers/media/i2c/Kconfig
>> +++ b/drivers/media/i2c/Kconfig
>> @@ -985,6 +985,17 @@ config VIDEO_OV5675
>> To compile this driver as a module, choose M here: the
>> module will be called ov5675.
>>
>> +config VIDEO_OV5693
>> + tristate "OmniVision OV5693 sensor support"
>> + depends on I2C && VIDEO_V4L2
>> + select V4L2_FWNODE
>> + help
>> + This is a Video4Linux2 sensor driver for the OmniVision
>> + OV5693 camera.
>> +
>> + To compile this driver as a module, choose M here: the
>> + module will be called ov5693.
>> +
>> config VIDEO_OV5695
>> tristate "OmniVision OV5695 sensor support"
>> depends on I2C && VIDEO_V4L2
>> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
>> index 65cfc94d25b6..7df680e110c9 100644
>> --- a/drivers/media/i2c/Makefile
>> +++ b/drivers/media/i2c/Makefile
>> @@ -75,6 +75,7 @@ obj-$(CONFIG_VIDEO_OV5647) += ov5647.o
>> obj-$(CONFIG_VIDEO_OV5648) += ov5648.o
>> obj-$(CONFIG_VIDEO_OV5670) += ov5670.o
>> obj-$(CONFIG_VIDEO_OV5675) += ov5675.o
>> +obj-$(CONFIG_VIDEO_OV5693) += ov5693.o
>> obj-$(CONFIG_VIDEO_OV5695) += ov5695.o
>> obj-$(CONFIG_VIDEO_OV6650) += ov6650.o
>> obj-$(CONFIG_VIDEO_OV7251) += ov7251.o
>> diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
>> new file mode 100644
>> index 000000000000..0460371164ea
>> --- /dev/null
>> +++ b/drivers/media/i2c/ov5693.c
>> @@ -0,0 +1,1585 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
>> + *
>> + * Adapted from the atomisp-ov5693 driver, with contributions from:
>> + *
>> + * Daniel Scally
>> + * Jean-Michel Hautbois
>> + * Fabian Wuthrich
>> + * Tsuchiya Yuto
>> + * Jordan Hand
>> + * Jake Day
>> + */
>> +
>> +#include <linux/acpi.h>
>> +#include <linux/clk.h>
>> +#include <linux/delay.h>
>> +#include <linux/device.h>
>> +#include <linux/i2c.h>
>> +#include <linux/module.h>
>> +#include <linux/pm_runtime.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <linux/slab.h>
>> +#include <linux/types.h>
>> +#include <media/v4l2-device.h>
>> +#include <media/v4l2-fwnode.h>
>> +#include <media/v4l2-ctrls.h>
> You've nearly mastered the alphabetical order ;-)
Hah, only so long as it occurs to me to do so.
>
>> +
>> +/* System Control */
>> +#define OV5693_SW_RESET_REG 0x0103
>> +#define OV5693_SW_STREAM_REG 0x0100
>> +#define OV5693_START_STREAMING 0x01
>> +#define OV5693_STOP_STREAMING 0x00
>> +#define OV5693_SW_RESET 0x01
>> +
>> +#define OV5693_REG_CHIP_ID_H 0x300A
>> +#define OV5693_REG_CHIP_ID_L 0x300B
>> +/* Yes, this is right. The datasheet for the OV5693 gives its ID as 0x5690 */
>> +#define OV5693_CHIP_ID 0x5690
>> +
>> +/* Exposure */
>> +#define OV5693_EXPOSURE_L_CTRL_HH_REG 0x3500
>> +#define OV5693_EXPOSURE_L_CTRL_H_REG 0x3501
>> +#define OV5693_EXPOSURE_L_CTRL_L_REG 0x3502
>> +#define OV5693_EXPOSURE_S_CTRL_HH_REG 0x3506
>> +#define OV5693_EXPOSURE_S_CTRL_H_REG 0x3507
>> +#define OV5693_EXPOSURE_S_CTRL_L_REG 0x3508
>> +#define OV5693_EXPOSURE_CTRL_HH(v) (((v) & GENMASK(14, 12)) >> 12)
>> +#define OV5693_EXPOSURE_CTRL_H(v) (((v) & GENMASK(11, 4)) >> 4)
>> +#define OV5693_EXPOSURE_CTRL_L(v) (((v) & GENMASK(3, 0)) << 4)
>> +#define OV5693_INTEGRATION_TIME_MARGIN 8
>> +#define OV5693_EXPOSURE_MIN 1
>> +#define OV5693_EXPOSURE_STEP 1
>> +
>> +/* Analogue Gain */
>> +#define OV5693_GAIN_CTRL_H_REG 0x350A
>> +#define OV5693_GAIN_CTRL_H(v) (((v) >> 4) & GENMASK(2, 0))
>> +#define OV5693_GAIN_CTRL_L_REG 0x350B
>> +#define OV5693_GAIN_CTRL_L(v) (((v) << 4) & GENMASK(7, 4))
>> +#define OV5693_GAIN_MIN 1
>> +#define OV5693_GAIN_MAX 127
>> +#define OV5693_GAIN_DEF 8
>> +#define OV5693_GAIN_STEP 1
>> +
>> +/* Digital Gain */
>> +#define OV5693_MWB_RED_GAIN_H_REG 0x3400
>> +#define OV5693_MWB_RED_GAIN_L_REG 0x3401
>> +#define OV5693_MWB_GREEN_GAIN_H_REG 0x3402
>> +#define OV5693_MWB_GREEN_GAIN_L_REG 0x3403
>> +#define OV5693_MWB_BLUE_GAIN_H_REG 0x3404
>> +#define OV5693_MWB_BLUE_GAIN_L_REG 0x3405
>> +#define OV5693_MWB_GAIN_H_CTRL(v) (((v) >> 8) & GENMASK(3, 0))
>> +#define OV5693_MWB_GAIN_L_CTRL(v) ((v) & GENMASK(7, 0))
>> +#define OV5693_MWB_GAIN_MAX 0x0fff
>> +#define OV5693_DIGITAL_GAIN_MIN 1
>> +#define OV5693_DIGITAL_GAIN_MAX 4095
>> +#define OV5693_DIGITAL_GAIN_DEF 1024
>> +#define OV5693_DIGITAL_GAIN_STEP 1
>> +
>> +/* Timing and Format */
>> +#define OV5693_CROP_START_X_H_REG 0x3800
>> +#define OV5693_CROP_START_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
>> +#define OV5693_CROP_START_X_L_REG 0x3801
>> +#define OV5693_CROP_START_X_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_CROP_START_Y_H_REG 0x3802
>> +#define OV5693_CROP_START_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
>> +#define OV5693_CROP_START_Y_L_REG 0x3803
>> +#define OV5693_CROP_START_Y_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_CROP_END_X_H_REG 0x3804
>> +#define OV5693_CROP_END_X_H(v) (((v) & GENMASK(12, 8)) >> 8)
>> +#define OV5693_CROP_END_X_L_REG 0x3805
>> +#define OV5693_CROP_END_X_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_CROP_END_Y_H_REG 0x3806
>> +#define OV5693_CROP_END_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
>> +#define OV5693_CROP_END_Y_L_REG 0x3807
>> +#define OV5693_CROP_END_Y_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_OUTPUT_SIZE_X_H_REG 0x3808
>> +#define OV5693_OUTPUT_SIZE_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
>> +#define OV5693_OUTPUT_SIZE_X_L_REG 0x3809
>> +#define OV5693_OUTPUT_SIZE_X_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_OUTPUT_SIZE_Y_H_REG 0x380a
>> +#define OV5693_OUTPUT_SIZE_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
>> +#define OV5693_OUTPUT_SIZE_Y_L_REG 0x380b
>> +#define OV5693_OUTPUT_SIZE_Y_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_TIMING_HTS_H_REG 0x380c
>> +#define OV5693_TIMING_HTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
>> +#define OV5693_TIMING_HTS_L_REG 0x380d
>> +#define OV5693_TIMING_HTS_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_TIMING_VTS_H_REG 0x380e
>> +#define OV5693_TIMING_VTS_H(v) (((v) & GENMASK(15, 8)) >> 8)
>> +#define OV5693_TIMING_VTS_L_REG 0x380f
>> +#define OV5693_TIMING_VTS_L(v) ((v) & GENMASK(7, 0))
>> +#define OV5693_TIMING_MAX_VTS 0xffff
>> +#define OV5693_TIMING_MIN_VTS 0x04
>> +
>> +#define OV5693_OFFSET_START_X_H_REG 0x3810
>> +#define OV5693_OFFSET_START_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
>> +#define OV5693_OFFSET_START_X_L_REG 0x3811
>> +#define OV5693_OFFSET_START_X_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_OFFSET_START_Y_H_REG 0x3812
>> +#define OV5693_OFFSET_START_Y_H(v) (((v) & GENMASK(15, 8)) >> 8)
>> +#define OV5693_OFFSET_START_Y_L_REG 0x3813
>> +#define OV5693_OFFSET_START_Y_L(v) ((v) & GENMASK(7, 0))
>> +
>> +#define OV5693_SUB_INC_X_REG 0x3814
>> +#define OV5693_SUB_INC_Y_REG 0x3815
>> +
>> +#define OV5693_FORMAT1_REG 0x3820
>> +#define OV5693_FORMAT1_FLIP_VERT_ISP_EN BIT(2)
>> +#define OV5693_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1)
>> +#define OV5693_FORMAT1_VBIN_EN BIT(0)
>> +#define OV5693_FORMAT2_REG 0x3821
>> +#define OV5693_FORMAT2_HDR_EN BIT(7)
>> +#define OV5693_FORMAT2_FLIP_HORZ_ISP_EN BIT(2)
>> +#define OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1)
>> +#define OV5693_FORMAT2_HBIN_EN BIT(0)
>> +
>> +#define OV5693_ISP_CTRL2_REG 0x5002
>> +#define OV5693_ISP_SCALE_ENABLE BIT(7)
>> +
>> +/* Pixel Array */
>> +#define OV5693_NATIVE_WIDTH 2624U
>> +#define OV5693_NATIVE_HEIGHT 1956U
>> +#define OV5693_ACTIVE_START_LEFT 16U
>> +#define OV5693_ACTIVE_START_TOP 6U
>> +#define OV5693_ACTIVE_WIDTH 2592U
>> +#define OV5693_ACTIVE_HEIGHT 1944U
>> +
>> +/* Test Pattern */
>> +#define OV5693_TEST_PATTERN_REG 0x5e00
>> +#define OV5693_TEST_PATTERN_ENABLE BIT(7)
>> +#define OV5693_TEST_PATTERN_ROLLING BIT(6)
>> +#define OV5693_TEST_PATTERN_RANDOM 0x01
>> +#define OV5693_TEST_PATTERN_BARS 0x00
>> +
>> +/* System Frequencies */
>> +#define OV5693_XVCLK_FREQ 19200000
>> +#define OV5693_LINK_FREQ_400MHZ 400000000
>> +#define OV5693_PIXEL_RATE 160000000
>> +
>> +/* Miscellaneous */
>> +#define OV5693_NUM_MBUS_FMTS 1
>> +#define OV5693_NUM_SUPPLIES 2
>> +
>> +#define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd)
>> +
>> +struct ov5693_reg {
>> + u16 reg;
>> + u8 val;
>> +};
>> +
>> +struct ov5693_reg_list {
>> + u32 num_regs;
>> + const struct ov5693_reg *regs;
>> +};
>> +
>> +struct ov5693_resolution {
>> + char *desc;
>> + int fps;
>> +
>> + struct v4l2_rect crop;
>> +
>> + unsigned int crop_start_x;
>> + unsigned int offset_x;
>> + unsigned int output_size_x;
>> + unsigned int crop_end_x;
>> + unsigned int hts;
>> +
>> + unsigned int crop_start_y;
>> + unsigned int offset_y;
>> + unsigned int output_size_y;
>> + unsigned int crop_end_y;
>> + unsigned int vts;
>> +
>> + unsigned int inc_x_odd;
>> + unsigned int inc_x_even;
>> + unsigned int inc_y_odd;
>> + unsigned int inc_y_even;
>> +
>> + bool binning_x;
>> + bool binning_y;
>> + bool scale_enable;
>> +};
>> +
>> +struct ov5693_device {
>> + struct i2c_client *client;
>> + struct device *dev;
>> +
>> + /* Protect against concurrent changes to controls */
>> + struct mutex lock;
>> +
>> + struct gpio_desc *reset;
>> + struct gpio_desc *powerdown;
>> + struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES];
>> + struct clk *clk;
>> +
>> + const struct ov5693_resolution *mode;
>> + bool streaming;
>> +
>> + struct v4l2_subdev sd;
>> + struct media_pad pad;
>> +
>> + struct ov5693_v4l2_ctrls {
>> + struct v4l2_ctrl_handler handler;
>> + struct v4l2_ctrl *link_freq;
>> + struct v4l2_ctrl *pixel_rate;
>> + struct v4l2_ctrl *exposure;
>> + struct v4l2_ctrl *analogue_gain;
>> + struct v4l2_ctrl *digital_gain;
>> + struct v4l2_ctrl *hflip;
>> + struct v4l2_ctrl *vflip;
>> + struct v4l2_ctrl *hblank;
>> + struct v4l2_ctrl *vblank;
>> + struct v4l2_ctrl *test_pattern;
>> + } ctrls;
>> +};
>> +
>> +static const struct ov5693_reg ov5693_global_regs[] = {
>> + {0x0103, 0x01},
>> + {0x3016, 0xf0},
>> + {0x3017, 0xf0},
>> + {0x3018, 0xf0},
>> + {0x3022, 0x01},
>> + {0x3028, 0x44},
>> + {0x3098, 0x02},
>> + {0x3099, 0x19},
>> + {0x309a, 0x02},
>> + {0x309b, 0x01},
>> + {0x309c, 0x00},
>> + {0x30a0, 0xd2},
>> + {0x30a2, 0x01},
>> + {0x30b2, 0x00},
>> + {0x30b3, 0x7d},
>> + {0x30b4, 0x03},
>> + {0x30b5, 0x04},
>> + {0x30b6, 0x01},
>> + {0x3104, 0x21},
>> + {0x3106, 0x00},
>> + {0x3406, 0x01},
>> + {0x3503, 0x07},
>> + {0x350b, 0x40},
>> + {0x3601, 0x0a},
>> + {0x3602, 0x38},
>> + {0x3612, 0x80},
>> + {0x3620, 0x54},
>> + {0x3621, 0xc7},
>> + {0x3622, 0x0f},
>> + {0x3625, 0x10},
>> + {0x3630, 0x55},
>> + {0x3631, 0xf4},
>> + {0x3632, 0x00},
>> + {0x3633, 0x34},
>> + {0x3634, 0x02},
>> + {0x364d, 0x0d},
>> + {0x364f, 0xdd},
>> + {0x3660, 0x04},
>> + {0x3662, 0x10},
>> + {0x3663, 0xf1},
>> + {0x3665, 0x00},
>> + {0x3666, 0x20},
>> + {0x3667, 0x00},
>> + {0x366a, 0x80},
>> + {0x3680, 0xe0},
>> + {0x3681, 0x00},
>> + {0x3700, 0x42},
>> + {0x3701, 0x14},
>> + {0x3702, 0xa0},
>> + {0x3703, 0xd8},
>> + {0x3704, 0x78},
>> + {0x3705, 0x02},
>> + {0x370a, 0x00},
>> + {0x370b, 0x20},
>> + {0x370c, 0x0c},
>> + {0x370d, 0x11},
>> + {0x370e, 0x00},
>> + {0x370f, 0x40},
>> + {0x3710, 0x00},
>> + {0x371a, 0x1c},
>> + {0x371b, 0x05},
>> + {0x371c, 0x01},
>> + {0x371e, 0xa1},
>> + {0x371f, 0x0c},
>> + {0x3721, 0x00},
>> + {0x3724, 0x10},
>> + {0x3726, 0x00},
>> + {0x372a, 0x01},
>> + {0x3730, 0x10},
>> + {0x3738, 0x22},
>> + {0x3739, 0xe5},
>> + {0x373a, 0x50},
>> + {0x373b, 0x02},
>> + {0x373c, 0x41},
>> + {0x373f, 0x02},
>> + {0x3740, 0x42},
>> + {0x3741, 0x02},
>> + {0x3742, 0x18},
>> + {0x3743, 0x01},
>> + {0x3744, 0x02},
>> + {0x3747, 0x10},
>> + {0x374c, 0x04},
>> + {0x3751, 0xf0},
>> + {0x3752, 0x00},
>> + {0x3753, 0x00},
>> + {0x3754, 0xc0},
>> + {0x3755, 0x00},
>> + {0x3756, 0x1a},
>> + {0x3758, 0x00},
>> + {0x3759, 0x0f},
>> + {0x376b, 0x44},
>> + {0x375c, 0x04},
>> + {0x3774, 0x10},
>> + {0x3776, 0x00},
>> + {0x377f, 0x08},
>> + {0x3780, 0x22},
>> + {0x3781, 0x0c},
>> + {0x3784, 0x2c},
>> + {0x3785, 0x1e},
>> + {0x378f, 0xf5},
>> + {0x3791, 0xb0},
>> + {0x3795, 0x00},
>> + {0x3796, 0x64},
>> + {0x3797, 0x11},
>> + {0x3798, 0x30},
>> + {0x3799, 0x41},
>> + {0x379a, 0x07},
>> + {0x379b, 0xb0},
>> + {0x379c, 0x0c},
>> + {0x3a04, 0x06},
>> + {0x3a05, 0x14},
>> + {0x3e07, 0x20},
>> + {0x4000, 0x08},
>> + {0x4001, 0x04},
>> + {0x4004, 0x08},
>> + {0x4006, 0x20},
>> + {0x4008, 0x24},
>> + {0x4009, 0x10},
>> + {0x4058, 0x00},
>> + {0x4101, 0xb2},
>> + {0x4307, 0x31},
>> + {0x4511, 0x05},
>> + {0x4512, 0x01},
>> + {0x481f, 0x30},
>> + {0x4826, 0x2c},
>> + {0x4d02, 0xfd},
>> + {0x4d03, 0xf5},
>> + {0x4d04, 0x0c},
>> + {0x4d05, 0xcc},
>> + {0x4837, 0x0a},
>> + {0x5003, 0x20},
>> + {0x5013, 0x00},
>> + {0x5842, 0x01},
>> + {0x5843, 0x2b},
>> + {0x5844, 0x01},
>> + {0x5845, 0x92},
>> + {0x5846, 0x01},
>> + {0x5847, 0x8f},
>> + {0x5848, 0x01},
>> + {0x5849, 0x0c},
>> + {0x5e10, 0x0c},
>> + {0x3820, 0x00},
>> + {0x3821, 0x1e},
>> + {0x5041, 0x14}
>> +};
>> +
>> +static const struct ov5693_reg_list ov5693_global_setting = {
>> + .num_regs = ARRAY_SIZE(ov5693_global_regs),
>> + .regs = ov5693_global_regs,
>> +};
>> +
>> +#define OV5693_NUM_RESOLUTIONS ARRAY_SIZE(ov5693_resolutions)
>> +struct ov5693_resolution ov5693_resolutions[] = {
> Could we avoid making this driver mode-based, given that we program
> registers manually with the crop rectangle and binning configuration ?
> We could implement the .set_selection() operation to configure the crop
> rectangle, and control binning as the ratio between the crop rectangle
> size and the output size.
I honestly hadn't even thought about doing it that way, but I like that
idea much more than the fixed modes yes. I'll switch to that for the v2
>
>> + {
>> + .desc = "ov5693_2592x1944_30fps",
>> + .fps = 30,
>> +
>> + .crop_start_x = 16,
>> + .offset_x = 0,
>> + .output_size_x = 2592,
>> + .crop_end_x = 2608,
>> + .hts = 2688,
>> +
>> + .crop_start_y = 6,
>> + .offset_y = 0,
>> + .output_size_y = 1944,
>> + .crop_end_y = 1950,
>> + .vts = 1984,
>> +
>> + .inc_x_odd = 1,
>> + .inc_x_even = 1,
>> + .inc_y_odd = 1,
>> + .inc_y_even = 1,
>> +
>> + .crop = {
>> + .left = 16,
>> + .top = 6,
>> + .width = 2592,
>> + .height = 1944
>> + },
>> + },
>> + {
>> + .desc = "ov5693_1920x1080_30fps",
>> + .fps = 30,
>> +
>> + .crop_start_x = 16,
>> + .offset_x = 0,
>> + .output_size_x = 1920,
>> + .crop_end_x = 2608,
>> + .hts = 2688,
>> +
>> + .crop_start_y = 249,
>> + .offset_y = 0,
>> + .output_size_y = 1080,
>> + .crop_end_y = 1707,
>> + .vts = 1984,
>> +
>> + .scale_enable = true,
>> +
>> + .inc_x_odd = 1,
>> + .inc_x_even = 1,
>> + .inc_y_odd = 1,
>> + .inc_y_even = 1,
>> +
>> + .crop = {
>> + .left = 16,
>> + .top = 249,
>> + .width = 2592,
>> + .height = 1458
>> + },
>> + },
>> + {
>> + .desc = "ov5693_1280x720_60fps",
>> + .fps = 60,
>> +
>> + .crop_start_x = 32,
>> + .offset_x = 0,
>> + .output_size_x = 1280,
>> + .crop_end_x = 2592,
>> + .binning_x = true,
>> + .hts = 2688,
>> +
>> + .crop_start_y = 252,
>> + .offset_y = 0,
>> + .output_size_y = 720,
>> + .crop_end_y = 1692,
>> + .binning_y = true,
>> + .vts = 992,
>> +
>> + .inc_x_odd = 3,
>> + .inc_x_even = 1,
>> + .inc_y_odd = 3,
>> + .inc_y_even = 1,
>> +
>> + .crop = {
>> + .left = 32,
>> + .top = 252,
>> + .width = 2560,
>> + .height = 1440
>> + },
>> + }
>> +};
>> +
>> +static const s64 link_freq_menu_items[] = {
>> + OV5693_LINK_FREQ_400MHZ
>> +};
>> +
>> +static const char * const ov5693_supply_names[] = {
>> + "avdd",
>> + "dovdd",
>> +};
>> +
>> +static const char * const ov5693_test_pattern_menu[] = {
>> + "Disabled",
>> + "Random Data",
>> + "Colour Bars",
>> + "Colour Bars with Rolling Bar"
>> +};
>> +
>> +static const u8 ov5693_test_pattern_bits[] = {
>> + 0,
>> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM,
>> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS,
>> + OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS |
>> + OV5693_TEST_PATTERN_ROLLING,
>> +};
>> +
>> +/* I2C I/O Operations */
>> +
>> +static int ov5693_read_reg(struct ov5693_device *ov5693, u16 addr, u8 *value)
>> +{
>> + unsigned char data[2] = { addr >> 8, addr & 0xff };
>> + struct i2c_client *client = ov5693->client;
>> + int ret;
>> +
>> + ret = i2c_master_send(client, data, sizeof(data));
>> + if (ret < 0) {
>> + dev_dbg(&client->dev, "i2c send error at address 0x%04x\n",
>> + addr);
>> + return ret;
>> + }
>> +
>> + ret = i2c_master_recv(client, value, 1);
>> + if (ret < 0) {
>> + dev_dbg(&client->dev, "i2c recv error at address 0x%04x\n",
>> + addr);
>> + return ret;
>> + }
> This would allow another bus master to access the bus between the write
> and the read. You should instead use i2c_transfer() with two messages.
Ah, thanks, that also hadn't occurred to me but now you mention it seems
obvious!
>
>> +
>> + return 0;
>> +}
>> +
>> +static void ov5693_write_reg(struct ov5693_device *ov5693, u16 addr, u8 value,
>> + int *error)
>> +{
>> + unsigned char data[3] = { addr >> 8, addr & 0xff, value };
>> + int ret;
>> +
>> + if (*error < 0)
>> + return;
>> +
>> + ret = i2c_master_send(ov5693->client, data, sizeof(data));
>> + if (ret < 0) {
>> + dev_dbg(ov5693->dev, "i2c send error at address 0x%04x: %d\n",
>> + addr, ret);
>> + *error = ret;
>> + }
>> +}
>> +
>> +static int ov5693_write_reg_array(struct ov5693_device *ov5693,
>> + const struct ov5693_reg_list *reglist)
>> +{
>> + unsigned int i;
>> + int ret = 0;
>> +
>> + for (i = 0; i < reglist->num_regs; i++)
>> + ov5693_write_reg(ov5693, reglist->regs[i].reg,
>> + reglist->regs[i].val, &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_update_bits(struct ov5693_device *ov5693, u16 address,
>> + u16 mask, u16 bits)
>> +{
>> + u8 value = 0;
>> + int ret;
>> +
>> + ret = ov5693_read_reg(ov5693, address, &value);
>> + if (ret)
>> + return ret;
>> +
>> + value &= ~mask;
>> + value |= bits;
>> +
>> + ov5693_write_reg(ov5693, address, value, &ret);
>> + if (ret)
>> + return ret;
>> +
>> + return 0;
>> +}
>> +
>> +/* V4L2 Controls Functions */
>> +
>> +static int ov5693_flip_vert_configure(struct ov5693_device *ov5693, bool enable)
>> +{
>> + u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN |
>> + OV5693_FORMAT1_FLIP_VERT_SENSOR_EN;
>> + int ret;
>> +
>> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG, bits,
>> + enable ? bits : 0);
>> + if (ret)
>> + return ret;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_flip_horz_configure(struct ov5693_device *ov5693, bool enable)
>> +{
>> + u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN |
>> + OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN;
>> + int ret;
>> +
>> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG, bits,
>> + enable ? bits : 0);
>> + if (ret)
>> + return ret;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value)
>> +{
>> + u8 exposure_hh = 0, exposure_h = 0, exposure_l = 0;
>> + int ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG, &exposure_hh);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG, &exposure_h);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG, &exposure_l);
>> + if (ret)
>> + return ret;
>> +
>> + /* The lowest 4 bits are unsupported fractional bits */
>> + *value = ((exposure_hh << 16) | (exposure_h << 8) | exposure_l) >> 4;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_exposure_configure(struct ov5693_device *ov5693, u32 exposure)
>> +{
>> + int ret = 0;
>> +
>> + /* Enable HDR Mode to access "short" exposure */
>> +
>> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
>> + OV5693_FORMAT2_HDR_EN, OV5693_FORMAT2_HDR_EN);
>> + if (ret)
>> + return ret;
>> +
>> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_HH_REG,
>> + OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
>> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_H_REG,
>> + OV5693_EXPOSURE_CTRL_H(exposure), &ret);
>> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_L_CTRL_L_REG,
>> + OV5693_EXPOSURE_CTRL_L(exposure), &ret);
>> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_HH_REG,
>> + OV5693_EXPOSURE_CTRL_HH(exposure), &ret);
>> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_H_REG,
>> + OV5693_EXPOSURE_CTRL_H(exposure), &ret);
>> + ov5693_write_reg(ov5693, OV5693_EXPOSURE_S_CTRL_L_REG,
>> + OV5693_EXPOSURE_CTRL_L(exposure), &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain)
>> +{
>> + u8 gain_l = 0, gain_h = 0;
>> + int ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_H_REG, &gain_h);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_GAIN_CTRL_L_REG, &gain_l);
>> + if (ret)
>> + return ret;
>> +
>> + /* As with exposure, the lowest 4 bits are fractional bits. */
>> + *gain = ((gain_h << 8) | gain_l) >> 4;
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_digital_gain_configure(struct ov5693_device *ov5693, u32 gain)
>> +{
>> + int ret = 0;
>> +
>> + ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_H_REG,
>> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
>> + ov5693_write_reg(ov5693, OV5693_MWB_RED_GAIN_L_REG,
>> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
>> + ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_H_REG,
>> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
>> + ov5693_write_reg(ov5693, OV5693_MWB_GREEN_GAIN_L_REG,
>> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
>> + ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_H_REG,
>> + OV5693_MWB_GAIN_H_CTRL(gain), &ret);
>> + ov5693_write_reg(ov5693, OV5693_MWB_BLUE_GAIN_L_REG,
>> + OV5693_MWB_GAIN_L_CTRL(gain), &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain)
>> +{
>> + int ret = 0;
>> +
>> + ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_L_REG,
>> + OV5693_GAIN_CTRL_L(gain), &ret);
>> + ov5693_write_reg(ov5693, OV5693_GAIN_CTRL_H_REG,
>> + OV5693_GAIN_CTRL_H(gain), &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank)
>> +{
>> + u16 vts = ov5693->mode->output_size_y + vblank;
>> + int ret = 0;
>> +
>> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
>> + OV5693_TIMING_VTS_H(vts), &ret);
>> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
>> + OV5693_TIMING_VTS_L(vts), &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx)
>> +{
>> + int ret = 0;
>> +
>> + ov5693_write_reg(ov5693, OV5693_TEST_PATTERN_REG,
>> + ov5693_test_pattern_bits[idx], &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> + struct ov5693_device *ov5693 =
>> + container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
>> + int ret = 0;
>> +
>> + /* If VBLANK is altered we need to update exposure to compensate */
>> + if (ctrl->id == V4L2_CID_VBLANK) {
>> + int exposure_max;
>> +
>> + exposure_max = ov5693->mode->output_size_y + ctrl->val -
>> + OV5693_INTEGRATION_TIME_MARGIN;
>> + __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
>> + ov5693->ctrls.exposure->minimum,
>> + exposure_max, ov5693->ctrls.exposure->step,
>> + ov5693->ctrls.exposure->val < exposure_max ?
>> + ov5693->ctrls.exposure->val : exposure_max);
>> + }
>> +
>> + /* Only apply changes to the controls if the device is powered up */
>> + if (!pm_runtime_get_if_in_use(ov5693->dev))
>> + return 0;
>> +
>> + switch (ctrl->id) {
>> + case V4L2_CID_EXPOSURE:
>> + ret = ov5693_exposure_configure(ov5693, ctrl->val);
>> + break;
>> + case V4L2_CID_ANALOGUE_GAIN:
>> + ret = ov5693_analog_gain_configure(ov5693, ctrl->val);
>> + break;
>> + case V4L2_CID_DIGITAL_GAIN:
>> + ret = ov5693_digital_gain_configure(ov5693, ctrl->val);
>> + break;
>> + case V4L2_CID_HFLIP:
>> + ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val);
>> + break;
>> + case V4L2_CID_VFLIP:
>> + ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val);
>> + break;
>> + case V4L2_CID_VBLANK:
>> + ret = ov5693_vts_configure(ov5693, ctrl->val);
>> + break;
>> + case V4L2_CID_TEST_PATTERN:
>> + ret = ov5693_test_pattern_configure(ov5693, ctrl->val);
>> + break;
>> + default:
>> + ret = -EINVAL;
>> + }
>> +
>> + pm_runtime_put(ov5693->dev);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
>> +{
>> + struct ov5693_device *ov5693 =
>> + container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
>> +
>> + switch (ctrl->id) {
>> + case V4L2_CID_EXPOSURE_ABSOLUTE:
>> + return ov5693_get_exposure(ov5693, &ctrl->val);
>> + case V4L2_CID_AUTOGAIN:
>> + return ov5693_get_gain(ov5693, &ctrl->val);
>> + default:
>> + return -EINVAL;
>> + }
>> +}
>> +
>> +static const struct v4l2_ctrl_ops ov5693_ctrl_ops = {
>> + .s_ctrl = ov5693_s_ctrl,
>> + .g_volatile_ctrl = ov5693_g_volatile_ctrl
>> +};
>> +
>> +/* System Control Functions */
>> +
>> +static int ov5693_mode_configure(struct ov5693_device *ov5693)
>> +{
>> + const struct ov5693_resolution *mode = ov5693->mode;
>> + int ret = 0;
>> +
>> + /* Crop Start X */
>> + ov5693_write_reg(ov5693, OV5693_CROP_START_X_H_REG,
>> + OV5693_CROP_START_X_H(mode->crop_start_x), &ret);
>> + ov5693_write_reg(ov5693, OV5693_CROP_START_X_L_REG,
>> + OV5693_CROP_START_X_L(mode->crop_start_x), &ret);
>> +
>> + /* Offset X */
>> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_H_REG,
>> + OV5693_OFFSET_START_X_H(mode->offset_x), &ret);
>> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_X_L_REG,
>> + OV5693_OFFSET_START_X_L(mode->offset_x), &ret);
>> +
>> + /* Output Size X */
>> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_H_REG,
>> + OV5693_OUTPUT_SIZE_X_H(mode->output_size_x), &ret);
>> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_X_L_REG,
>> + OV5693_OUTPUT_SIZE_X_L(mode->output_size_x), &ret);
>> +
>> + /* Crop End X */
>> + ov5693_write_reg(ov5693, OV5693_CROP_END_X_H_REG,
>> + OV5693_CROP_END_X_H(mode->crop_end_x), &ret);
>> + ov5693_write_reg(ov5693, OV5693_CROP_END_X_L_REG,
>> + OV5693_CROP_END_X_L(mode->crop_end_x), &ret);
>> +
>> + /* Horizontal Total Size */
>> + ov5693_write_reg(ov5693, OV5693_TIMING_HTS_H_REG,
>> + OV5693_TIMING_HTS_H(mode->hts), &ret);
>> + ov5693_write_reg(ov5693, OV5693_TIMING_HTS_L_REG,
>> + OV5693_TIMING_HTS_L(mode->hts), &ret);
>> +
>> + /* Crop Start Y */
>> + ov5693_write_reg(ov5693, OV5693_CROP_START_Y_H_REG,
>> + OV5693_CROP_START_Y_H(mode->crop_start_y), &ret);
>> + ov5693_write_reg(ov5693, OV5693_CROP_START_Y_L_REG,
>> + OV5693_CROP_START_Y_L(mode->crop_start_y), &ret);
>> +
>> + /* Offset Y */
>> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_H_REG,
>> + OV5693_OFFSET_START_Y_H(mode->offset_y), &ret);
>> + ov5693_write_reg(ov5693, OV5693_OFFSET_START_Y_L_REG,
>> + OV5693_OFFSET_START_Y_L(mode->offset_y), &ret);
>> +
>> + /* Output Size Y */
>> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_H_REG,
>> + OV5693_OUTPUT_SIZE_Y_H(mode->output_size_y), &ret);
>> + ov5693_write_reg(ov5693, OV5693_OUTPUT_SIZE_Y_L_REG,
>> + OV5693_OUTPUT_SIZE_Y_L(mode->output_size_y), &ret);
>> +
>> + /* Crop End Y */
>> + ov5693_write_reg(ov5693, OV5693_CROP_END_Y_H_REG,
>> + OV5693_CROP_END_Y_H(mode->crop_end_y), &ret);
>> + ov5693_write_reg(ov5693, OV5693_CROP_END_Y_L_REG,
>> + OV5693_CROP_END_Y_L(mode->crop_end_y), &ret);
>> +
>> + /* Vertical Total Size */
>> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_H_REG,
>> + OV5693_TIMING_VTS_H(mode->vts), &ret);
>> + ov5693_write_reg(ov5693, OV5693_TIMING_VTS_L_REG,
>> + OV5693_TIMING_VTS_L(mode->vts), &ret);
>> +
>> + /* Subsample X increase */
>> + ov5693_write_reg(ov5693, OV5693_SUB_INC_X_REG,
>> + ((mode->inc_x_odd << 4) & 0xf0) |
>> + (mode->inc_x_even & 0x0f), &ret);
>> + /* Subsample Y increase */
>> + ov5693_write_reg(ov5693, OV5693_SUB_INC_Y_REG,
>> + ((mode->inc_y_odd << 4) & 0xf0) |
>> + (mode->inc_y_even & 0x0f), &ret);
>> +
>> + if (ret)
>> + return ret;
>> +
>> + /* Binning */
>> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT1_REG,
>> + OV5693_FORMAT1_VBIN_EN,
>> + mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_update_bits(ov5693, OV5693_FORMAT2_REG,
>> + OV5693_FORMAT2_HBIN_EN,
>> + mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0);
>> + if (ret)
>> + return ret;
>> +
>> + /* Scaler */
>> + ret = ov5693_update_bits(ov5693, OV5693_ISP_CTRL2_REG,
>> + OV5693_ISP_SCALE_ENABLE,
>> + mode->scale_enable ? OV5693_ISP_SCALE_ENABLE : 0);
>> + if (ret)
>> + return ret;
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_sw_standby(struct ov5693_device *ov5693, bool standby)
>> +{
>> + int ret = 0;
>> +
>> + ov5693_write_reg(ov5693, OV5693_SW_STREAM_REG,
>> + standby ? OV5693_STOP_STREAMING : OV5693_START_STREAMING,
>> + &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_sw_reset(struct ov5693_device *ov5693)
>> +{
>> + int ret = 0;
>> +
>> + ov5693_write_reg(ov5693, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_sensor_init(struct ov5693_device *ov5693)
>> +{
>> + int ret = 0;
>> +
>> + ret = ov5693_sw_reset(ov5693);
>> + if (ret) {
>> + dev_err(ov5693->dev, "%s software reset error\n", __func__);
>> + return ret;
>> + }
>> +
>> + ret = ov5693_write_reg_array(ov5693, &ov5693_global_setting);
>> + if (ret) {
>> + dev_err(ov5693->dev, "%s global settings error\n", __func__);
>> + return ret;
>> + }
>> +
>> + ret = ov5693_mode_configure(ov5693);
>> + if (ret) {
>> + dev_err(ov5693->dev, "%s mode configure error\n", __func__);
>> + return ret;
>> + }
>> +
>> + ret = ov5693_sw_standby(ov5693, true);
>> + if (ret)
>> + dev_err(ov5693->dev, "%s software standby error\n", __func__);
>> +
>> + return ret;
>> +}
>> +
>> +static void ov5693_sensor_powerdown(struct ov5693_device *ov5693)
>> +{
>> + gpiod_set_value_cansleep(ov5693->reset, 1);
>> + gpiod_set_value_cansleep(ov5693->powerdown, 1);
>> +
>> + regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies);
>> +
>> + clk_disable_unprepare(ov5693->clk);
>> +}
>> +
>> +static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
>> +{
>> + int ret = 0;
>> +
>> + gpiod_set_value_cansleep(ov5693->reset, 1);
>> + gpiod_set_value_cansleep(ov5693->powerdown, 1);
>> +
>> + ret = clk_prepare_enable(ov5693->clk);
>> + if (ret) {
>> + dev_err(ov5693->dev, "Failed to enable clk\n");
>> + goto fail_power;
>> + }
>> +
>> + ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies);
>> + if (ret) {
>> + dev_err(ov5693->dev, "Failed to enable regulators\n");
>> + goto fail_power;
>> + }
>> +
>> + gpiod_set_value_cansleep(ov5693->reset, 0);
>> + gpiod_set_value_cansleep(ov5693->powerdown, 0);
>> +
>> + usleep_range(20000, 25000);
>> +
>> + return 0;
>> +
>> +fail_power:
>> + ov5693_sensor_powerdown(ov5693);
>> + return ret;
>> +}
>> +
>> +static int __maybe_unused ov5693_sensor_suspend(struct device *dev)
>> +{
>> + struct v4l2_subdev *sd = dev_get_drvdata(dev);
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> + int ret;
>> +
>> + mutex_lock(&ov5693->lock);
>> +
>> + if (ov5693->streaming) {
>> + ret = ov5693_sw_standby(ov5693, true);
>> + if (ret)
>> + goto out_unlock;
>> + }
>> +
>> + ov5693_sensor_powerdown(ov5693);
>> +
>> +out_unlock:
>> + mutex_unlock(&ov5693->lock);
>> + return ret;
>> +}
>> +
>> +static int __maybe_unused ov5693_sensor_resume(struct device *dev)
>> +{
>> + struct v4l2_subdev *sd = dev_get_drvdata(dev);
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> + int ret;
>> +
>> + mutex_lock(&ov5693->lock);
>> +
>> + ret = ov5693_sensor_powerup(ov5693);
>> + if (ret)
>> + goto out_unlock;
>> +
>> + ret = ov5693_sensor_init(ov5693);
>> + if (ret) {
>> + dev_err(dev, "ov5693 sensor init failure\n");
>> + goto err_power;
>> + }
>> +
>> + if (ov5693->streaming) {
>> + ret = ov5693_sw_standby(ov5693, false);
>> + if (ret)
>> + goto err_power;
>> + }
>> +
>> + goto out_unlock;
>> +
>> +err_power:
>> + ov5693_sensor_powerdown(ov5693);
>> +out_unlock:
>> + mutex_unlock(&ov5693->lock);
>> + return ret;
>> +}
>> +
>> +static int ov5693_detect(struct ov5693_device *ov5693)
>> +{
>> + u8 id_l = 0, id_h = 0;
>> + u16 id = 0;
>> + int ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_H, &id_h);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_read_reg(ov5693, OV5693_REG_CHIP_ID_L, &id_l);
>> + if (ret)
>> + return ret;
>> +
>> + id = (id_h << 8) | id_l;
>> +
>> + if (id != OV5693_CHIP_ID) {
>> + dev_err(ov5693->dev, "sensor ID mismatch. Found 0x%04x\n", id);
>> + return -ENODEV;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +/* V4L2 Framework callbacks */
>> +
>> +static int ov5693_set_fmt(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_format *format)
>> +{
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> + const struct ov5693_resolution *mode;
>> + int exposure_max;
>> + int ret = 0;
>> + int hblank;
>> +
>> + if (format->pad)
>> + return -EINVAL;
>> +
>> + mutex_lock(&ov5693->lock);
>> +
>> + mode = v4l2_find_nearest_size(ov5693_resolutions,
>> + OV5693_NUM_RESOLUTIONS, output_size_x,
>> + output_size_y, format->format.width,
>> + format->format.height);
>> +
>> + if (!mode)
>> + return -EINVAL;
>> +
>> + format->format.width = mode->output_size_x;
>> + format->format.height = mode->output_size_y;
>> + format->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
>> +
>> + if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
>> + *v4l2_subdev_get_try_format(sd, cfg, format->pad) = format->format;
>> + goto mutex_unlock;
>> + }
>> +
>> + ov5693->mode = mode;
>> +
>> + /* Update limits and set FPS to default */
>> + __v4l2_ctrl_modify_range(ov5693->ctrls.vblank,
>> + OV5693_TIMING_MIN_VTS,
>> + OV5693_TIMING_MAX_VTS - mode->output_size_y,
>> + 1, mode->vts - mode->output_size_y);
>> + __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank,
>> + mode->vts - mode->output_size_y);
>> +
>> + hblank = mode->hts - mode->output_size_x;
>> + __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1,
>> + hblank);
>> +
>> + exposure_max = mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
>> + __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
>> + ov5693->ctrls.exposure->minimum, exposure_max,
>> + ov5693->ctrls.exposure->step,
>> + ov5693->ctrls.exposure->val < exposure_max ?
>> + ov5693->ctrls.exposure->val : exposure_max);
>> +
>> +mutex_unlock:
>> + mutex_unlock(&ov5693->lock);
>> + return ret;
>> +}
>> +
>> +static const struct v4l2_rect *
>> +__ov5693_get_pad_crop(struct ov5693_device *ov5693, struct v4l2_subdev_pad_config *cfg,
>> + unsigned int pad, enum v4l2_subdev_format_whence which)
>> +{
>> + switch (which) {
>> + case V4L2_SUBDEV_FORMAT_TRY:
>> + return v4l2_subdev_get_try_crop(&ov5693->sd, cfg, pad);
>> + case V4L2_SUBDEV_FORMAT_ACTIVE:
>> + return &ov5693->mode->crop;
>> + }
>> +
>> + return NULL;
>> +}
>> +
>> +static int ov5693_get_selection(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_selection *sel)
>> +{
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> +
>> + switch (sel->target) {
>> + case V4L2_SEL_TGT_CROP:
>> + mutex_lock(&ov5693->lock);
>> + sel->r = *__ov5693_get_pad_crop(ov5693, cfg, sel->pad, sel->which);
>> + mutex_unlock(&ov5693->lock);
>> + break;
>> + case V4L2_SEL_TGT_NATIVE_SIZE:
>> + sel->r.top = 0;
>> + sel->r.left = 0;
>> + sel->r.width = OV5693_NATIVE_WIDTH;
>> + sel->r.height = OV5693_NATIVE_HEIGHT;
>> + break;
>> + case V4L2_SEL_TGT_CROP_BOUNDS:
>> + case V4L2_SEL_TGT_CROP_DEFAULT:
>> + sel->r.top = OV5693_ACTIVE_START_TOP;
>> + sel->r.left = OV5693_ACTIVE_START_LEFT;
>> + sel->r.width = OV5693_ACTIVE_WIDTH;
>> + sel->r.height = OV5693_ACTIVE_HEIGHT;
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_get_fmt(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_format *format)
>> +{
>> + struct v4l2_mbus_framefmt *fmt = &format->format;
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> +
>> + if (format->pad)
>> + return -EINVAL;
>> +
>> + if (!fmt)
>> + return -EINVAL;
>> +
>> + fmt->width = ov5693->mode->output_size_x;
>> + fmt->height = ov5693->mode->output_size_y;
>> + fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
>> +{
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> + int ret;
>> +
>> + if (enable) {
>> + ret = pm_runtime_get_sync(ov5693->dev);
>> + if (ret < 0)
>> + goto err_power_down;
>> + }
>> +
>> + ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler);
>> + if (ret)
>> + goto err_power_down;
>> +
>> + mutex_lock(&ov5693->lock);
>> + ret = ov5693_sw_standby(ov5693, !enable);
>> + mutex_unlock(&ov5693->lock);
>> +
>> + if (ret)
>> + goto err_power_down;
>> + ov5693->streaming = !!enable;
>> +
>> + if (!enable)
>> + pm_runtime_put(ov5693->dev);
>> +
>> + return 0;
>> +err_power_down:
>> + pm_runtime_put_noidle(ov5693->dev);
>> + return ret;
>> +}
>> +
>> +static int ov5693_g_frame_interval(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_frame_interval *interval)
>> +{
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> +
>> + interval->interval.numerator = 1;
>> + interval->interval.denominator = ov5693->mode->fps;
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_mbus_code_enum *code)
>> +{
>> + if (code->index >= OV5693_NUM_MBUS_FMTS)
>> + return -EINVAL;
>> +
>> + code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
>> + return 0;
>> +}
>> +
>> +static int ov5693_enum_frame_size(struct v4l2_subdev *sd,
>> + struct v4l2_subdev_pad_config *cfg,
>> + struct v4l2_subdev_frame_size_enum *fse)
>> +{
>> + int index = fse->index;
>> +
>> + if (index >= OV5693_NUM_RESOLUTIONS)
>> + return -EINVAL;
>> +
>> + fse->min_width = ov5693_resolutions[index].output_size_x;
>> + fse->min_height = ov5693_resolutions[index].output_size_y;
>> + fse->max_width = ov5693_resolutions[index].output_size_x;
>> + fse->max_height = ov5693_resolutions[index].output_size_y;
>> +
>> + return 0;
>> +}
>> +
>> +static const struct v4l2_subdev_video_ops ov5693_video_ops = {
>> + .s_stream = ov5693_s_stream,
>> + .g_frame_interval = ov5693_g_frame_interval,
>> +};
>> +
>> +static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
>> + .enum_mbus_code = ov5693_enum_mbus_code,
>> + .enum_frame_size = ov5693_enum_frame_size,
>> + .get_fmt = ov5693_get_fmt,
>> + .set_fmt = ov5693_set_fmt,
>> + .get_selection = ov5693_get_selection,
>> +};
>> +
>> +static const struct v4l2_subdev_ops ov5693_ops = {
>> + .video = &ov5693_video_ops,
>> + .pad = &ov5693_pad_ops,
>> +};
>> +
>> +/* Sensor and Driver Configuration Functions */
>> +
>> +static int ov5693_init_controls(struct ov5693_device *ov5693)
>> +{
>> + const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops;
>> + struct v4l2_fwnode_device_properties props;
>> + int vblank_max, vblank_def;
>> + int exposure_max;
>> + int hblank;
>> + int ret;
>> +
>> + ret = v4l2_ctrl_handler_init(&ov5693->ctrls.handler, 14);
>> + if (ret)
>> + return ret;
>> +
>> + /* link freq */
>> + ov5693->ctrls.link_freq = v4l2_ctrl_new_int_menu(&ov5693->ctrls.handler,
>> + NULL, V4L2_CID_LINK_FREQ,
>> + 0, 0, link_freq_menu_items);
>> + if (ov5693->ctrls.link_freq)
>> + ov5693->ctrls.link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
>> +
>> + /* pixel rate */
>> + ov5693->ctrls.pixel_rate = v4l2_ctrl_new_std(&ov5693->ctrls.handler, NULL,
>> + V4L2_CID_PIXEL_RATE, 0,
>> + OV5693_PIXEL_RATE, 1,
>> + OV5693_PIXEL_RATE);
>> +
>> + /* Exposure */
>> + exposure_max = ov5693->mode->vts - OV5693_INTEGRATION_TIME_MARGIN;
>> + ov5693->ctrls.exposure = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
>> + V4L2_CID_EXPOSURE,
>> + OV5693_EXPOSURE_MIN,
>> + exposure_max,
>> + OV5693_EXPOSURE_STEP,
>> + exposure_max);
>> +
>> + /* Gain */
>> + ov5693->ctrls.analogue_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler,
>> + ops, V4L2_CID_ANALOGUE_GAIN,
>> + OV5693_GAIN_MIN,
>> + OV5693_GAIN_MAX,
>> + OV5693_GAIN_STEP,
>> + OV5693_GAIN_DEF);
>> + ov5693->ctrls.digital_gain = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
>> + V4L2_CID_DIGITAL_GAIN,
>> + OV5693_DIGITAL_GAIN_MIN,
>> + OV5693_DIGITAL_GAIN_MAX,
>> + OV5693_DIGITAL_GAIN_STEP,
>> + OV5693_DIGITAL_GAIN_DEF);
>> +
>> + /* Flip */
>> + ov5693->ctrls.hflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
>> + V4L2_CID_HFLIP, 0, 1, 1, 0);
>> + ov5693->ctrls.vflip = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
>> + V4L2_CID_VFLIP, 0, 1, 1, 0);
>> +
>> + hblank = ov5693->mode->hts - ov5693->mode->output_size_x;
>> + ov5693->ctrls.hblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
>> + V4L2_CID_HBLANK, hblank, hblank,
>> + 1, hblank);
>> + if (ov5693->ctrls.hblank)
>> + ov5693->ctrls.hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
>> +
>> + vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode->output_size_y;
>> + vblank_def = ov5693->mode->vts - ov5693->mode->output_size_y;
>> + ov5693->ctrls.vblank = v4l2_ctrl_new_std(&ov5693->ctrls.handler, ops,
>> + V4L2_CID_VBLANK,
>> + OV5693_TIMING_MIN_VTS,
>> + vblank_max, 1, vblank_def);
>> +
>> + ov5693->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items(
>> + &ov5693->ctrls.handler, ops, V4L2_CID_TEST_PATTERN,
>> + ARRAY_SIZE(ov5693_test_pattern_menu) - 1,
>> + 0, 0, ov5693_test_pattern_menu);
>> +
>> + if (ov5693->ctrls.handler.error) {
>> + dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n");
>> + ret = ov5693->ctrls.handler.error;
>> + goto err_free_handler;
>> + }
>> +
>> + /* set properties from fwnode (e.g. rotation, orientation) */
>> + ret = v4l2_fwnode_device_parse(ov5693->dev, &props);
>> + if (ret)
>> + goto err_free_handler;
>> +
>> + ret = v4l2_ctrl_new_fwnode_properties(&ov5693->ctrls.handler, ops,
>> + &props);
>> + if (ret)
>> + goto err_free_handler;
>> +
>> + /* Use same lock for controls as for everything else. */
>> + ov5693->ctrls.handler.lock = &ov5693->lock;
>> + ov5693->sd.ctrl_handler = &ov5693->ctrls.handler;
>> +
>> + return 0;
>> +
>> +err_free_handler:
>> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
>> + return ret;
>> +}
>> +
>> +static int ov5693_configure_gpios(struct ov5693_device *ov5693)
>> +{
>> + ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset",
>> + GPIOD_OUT_HIGH);
>> + if (IS_ERR(ov5693->reset)) {
>> + dev_err(ov5693->dev, "Error fetching reset GPIO\n");
>> + return PTR_ERR(ov5693->reset);
>> + }
>> +
>> + ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown",
>> + GPIOD_OUT_HIGH);
>> + if (IS_ERR(ov5693->powerdown)) {
>> + dev_err(ov5693->dev, "Error fetching powerdown GPIO\n");
>> + return PTR_ERR(ov5693->powerdown);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static int ov5693_get_regulators(struct ov5693_device *ov5693)
>> +{
>> + unsigned int i;
>> +
>> + for (i = 0; i < OV5693_NUM_SUPPLIES; i++)
>> + ov5693->supplies[i].supply = ov5693_supply_names[i];
>> +
>> + return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES,
>> + ov5693->supplies);
>> +}
>> +
>> +static int ov5693_probe(struct i2c_client *client)
>> +{
>> + struct fwnode_handle *fwnode = dev_fwnode(&client->dev);
>> + struct fwnode_handle *endpoint;
>> + struct ov5693_device *ov5693;
>> + u32 clk_rate;
>> + int ret = 0;
>> +
>> + endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
>> + if (!endpoint && !IS_ERR_OR_NULL(fwnode->secondary))
>> + endpoint = fwnode_graph_get_next_endpoint(fwnode->secondary, NULL);
>> + if (!endpoint)
>> + return -EPROBE_DEFER;
>> +
>> + ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
>> + if (!ov5693)
>> + return -ENOMEM;
>> +
>> + ov5693->client = client;
>> + ov5693->dev = &client->dev;
>> +
>> + mutex_init(&ov5693->lock);
>> +
>> + v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
>> +
>> + ov5693->clk = devm_clk_get(&client->dev, "xvclk");
>> + if (IS_ERR(ov5693->clk)) {
>> + dev_err(&client->dev, "Error getting clock\n");
>> + return PTR_ERR(ov5693->clk);
>> + }
>> +
>> + clk_rate = clk_get_rate(ov5693->clk);
>> + if (clk_rate != OV5693_XVCLK_FREQ) {
>> + dev_err(&client->dev, "Unsupported clk freq %u, expected %u\n",
>> + clk_rate, OV5693_XVCLK_FREQ);
>> + return -EINVAL;
>> + }
>> +
>> + ret = ov5693_configure_gpios(ov5693);
>> + if (ret)
>> + return ret;
>> +
>> + ret = ov5693_get_regulators(ov5693);
>> + if (ret) {
>> + dev_err(&client->dev, "Error fetching regulators\n");
>> + return ret;
>> + }
>> +
>> + ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
>> + ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
>> + ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
>> + ov5693->mode = &ov5693_resolutions[OV5693_NUM_RESOLUTIONS - 1];
>> +
>> + ret = ov5693_init_controls(ov5693);
>> + if (ret)
>> + return ret;
>> +
>> + ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad);
>> + if (ret)
>> + goto err_ctrl_handler_free;
>> +
>> + /*
>> + * We need the driver to work in the event that pm runtime is disable in
>> + * the kernel, so power up and verify the chip now. In the event that
>> + * runtime pm is disabled this will leave the chip on, so that streaming
>> + * will work.
>> + */
>> +
>> + ret = ov5693_sensor_powerup(ov5693);
>> + if (ret)
>> + goto err_media_entity_cleanup;
>> +
>> + ret = ov5693_detect(ov5693);
>> + if (ret)
>> + goto err_powerdown;
>> +
>> + pm_runtime_set_active(&client->dev);
>> + pm_runtime_get_noresume(&client->dev);
>> + pm_runtime_enable(&client->dev);
>> +
>> + ret = v4l2_async_register_subdev_sensor_common(&ov5693->sd);
>> + if (ret) {
>> + dev_err(&client->dev, "failed to register V4L2 subdev: %d",
>> + ret);
>> + goto err_pm_runtime;
>> + }
>> +
>> + pm_runtime_set_autosuspend_delay(&client->dev, 1000);
>> + pm_runtime_use_autosuspend(&client->dev);
>> + pm_runtime_put_autosuspend(&client->dev);
>> +
>> + return ret;
>> +
>> +err_pm_runtime:
>> + pm_runtime_disable(&client->dev);
>> + pm_runtime_put_noidle(&client->dev);
>> +err_powerdown:
>> + ov5693_sensor_powerdown(ov5693);
>> +err_media_entity_cleanup:
>> + media_entity_cleanup(&ov5693->sd.entity);
>> +err_ctrl_handler_free:
>> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
>> +
>> + return ret;
>> +}
>> +
>> +static int ov5693_remove(struct i2c_client *client)
>> +{
>> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
>> + struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
>> +
>> + v4l2_async_unregister_subdev(sd);
>> + media_entity_cleanup(&ov5693->sd.entity);
>> + v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
>> + mutex_destroy(&ov5693->lock);
>> +
>> + /*
>> + * Disable runtime PM. In case runtime PM is disabled in the kernel,
>> + * make sure to turn power off manually.
>> + */
>> + pm_runtime_disable(&client->dev);
>> + if (!pm_runtime_status_suspended(&client->dev))
>> + ov5693_sensor_powerdown(ov5693);
>> + pm_runtime_set_suspended(&client->dev);
>> +
>> + return 0;
>> +}
>> +
>> +static const struct dev_pm_ops ov5693_pm_ops = {
>> + SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL)
>> +};
>> +
>> +static const struct acpi_device_id ov5693_acpi_match[] = {
>> + {"INT33BE"},
>> + {},
>> +};
>> +MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
>> +
>> +static struct i2c_driver ov5693_driver = {
>> + .driver = {
>> + .name = "ov5693",
>> + .acpi_match_table = ov5693_acpi_match,
>> + .pm = &ov5693_pm_ops,
>> + },
>> + .probe_new = ov5693_probe,
>> + .remove = ov5693_remove,
>> +};
>> +module_i2c_driver(ov5693_driver);
>> +
>> +MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
>> +MODULE_LICENSE("GPL");