LinuxLists.cc - [PATCH v1 1/3] dt-bindings: vendor-prefixes: add GalaxyCore

2023-10-23 00:26:08

Subject: [PATCH v1 1/3] dt-bindings: vendor-prefixes: add GalaxyCore

GalaxyCore Shanghai Limited Corporation manufacturers
CMOS Image Sensor and Display Driver IC.

Signed-off-by: Sebastian Reichel <[email protected]>
---
Just included for completion, I expect this to be merged:
https://lore.kernel.org/all/[email protected]/
---
Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 573578db9509..8cb49a2e4afa 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -494,6 +494,8 @@ patternProperties:
description: Fujitsu Ltd.
"^fxtec,.*":
description: FX Technology Ltd.
+ "^galaxycore,.*":
+ description: GalaxyCore Shanghai Limited Corporation
"^gardena,.*":
description: GARDENA GmbH
"^gateworks,.*":
--
2.42.0

2023-10-23 00:26:41

by Sebastian Reichel

[permalink] [raw]

Subject: [PATCH v1 2/3] media: dt-bindings: gc0308: add binding

Add DT binding for GalaxyCore GC0308 camera sensor.

Signed-off-by: Sebastian Reichel <[email protected]>
---
.../bindings/media/i2c/galaxycore,gc0308.yaml | 106 ++++++++++++++++++
1 file changed, 106 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/galaxycore,gc0308.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/galaxycore,gc0308.yaml b/Documentation/devicetree/bindings/media/i2c/galaxycore,gc0308.yaml
new file mode 100644
index 000000000000..f1fa11ea88b9
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/galaxycore,gc0308.yaml
@@ -0,0 +1,106 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/galaxycore,gc0308.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Galaxycore GC0308 and GC0309 Image Sensors
+
+maintainers:
+ - Sebastian Reichel <[email protected]>
+
+description: |
+ The GalaxyCore GC0308 and GC0309 are 640x480 VGA sensors programmable
+ through an I2C interface and connected via parallel bus and include
+ an ISP capable of auto exposure and auto white balance.
+
+allOf:
+ - $ref: ../video-interface-devices.yaml#
+
+properties:
+ compatible:
+ enum:
+ - galaxycore,gc0308
+ - galaxycore,gc0309
+
+ reg:
+ const: 0x21
+
+ clocks:
+ description: Reference to the xclk clock.
+ maxItems: 1
+
+ reset-gpios:
+ description: GPIO descriptor for the reset pin.
+ maxItems: 1
+
+ powerdown-gpios:
+ description: GPIO descriptor for the powerdown pin.
+ maxItems: 1
+
+ vdd28-supply:
+ description: 2.8V supply
+
+ port:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ description: |
+ Video output port.
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ bus-width: true
+ data-shift: true
+ hsync-active: true
+ vsync-active: true
+ data-active: true
+ pclk-sample: true
+
+ required:
+ - bus-width
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - powerdown-gpios
+ - port
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ camera-sensor@21 {
+ compatible = "galaxycore,gc0308";
+ reg = <0x21>;
+ clocks = <&camera_clk>;
+ powerdown-gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
+ vdd28-supply = <&vdd28>;
+
+ port {
+ gc0308_ep: endpoint {
+ remote-endpoint = <&parallel_from_gc0308>;
+ bus-width = <8>;
+ data-shift = <2>; /* lines 9:2 are used */
+ hsync-active = <1>; /* active high */
+ vsync-active = <1>; /* active high */
+ data-active = <1>; /* active high */
+ pclk-sample = <1>; /* sample on rising edge */
+ };
+ };
+ };
+ };
+
+...
--
2.42.0

2023-10-23 00:27:08

by Sebastian Reichel

[permalink] [raw]

Subject: [PATCH v1 3/3] media: i2c: gc0308: new driver

Introduce new driver for GalaxyCore GC0308, which is a cheap
640x480 with an on-chip ISP sensor sold since 2010. Data is
provided via parallel bus.

Signed-off-by: Sebastian Reichel <[email protected]>
---
drivers/media/i2c/Kconfig | 14 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/gc0308.c | 1451 ++++++++++++++++++++++++++++++++++++
3 files changed, 1466 insertions(+)
create mode 100644 drivers/media/i2c/gc0308.c

diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 74ff833ff48c..7db4abc0ef88 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -50,6 +50,20 @@ config VIDEO_AR0521
To compile this driver as a module, choose M here: the
module will be called ar0521.

+config VIDEO_GC0308
+ tristate "GalaxyCore GC0308 sensor support"
+ depends on I2C && VIDEO_DEV
+ select MEDIA_CONTROLLER
+ select VIDEO_V4L2_SUBDEV_API
+ select V4L2_FWNODE
+ select REGMAP_I2C
+ help
+ This is a Video4Linux2 sensor driver for the GalaxyCore
+ GC0308 camera.
+
+ To compile this driver as a module, choose M here: the
+ module will be called gc0308.
+
config VIDEO_HI556
tristate "Hynix Hi-556 sensor support"
help
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 80b00d39b48f..f03a21f2962a 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_VIDEO_DW9719) += dw9719.o
obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o
obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8/
+obj-$(CONFIG_VIDEO_GC0308) += gc0308.o
obj-$(CONFIG_VIDEO_HI556) += hi556.o
obj-$(CONFIG_VIDEO_HI846) += hi846.o
obj-$(CONFIG_VIDEO_HI847) += hi847.o
diff --git a/drivers/media/i2c/gc0308.c b/drivers/media/i2c/gc0308.c
new file mode 100644
index 000000000000..c92370aed43b
--- /dev/null
+++ b/drivers/media/i2c/gc0308.c
@@ -0,0 +1,1451 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for the GalaxyCore GC0308/GC0309 camera sensor.
+ *
+ * Copyright (c) 2023 Sebastian Reichel <[email protected]>
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+
+/* Analog & CISCTL*/
+#define GC0308_CHIP_ID 0x000
+#define GC0308_HBLANK 0x001
+#define GC0308_VBLANK 0x002
+#define GC0308_EXPH 0x003
+#define GC0308_EXPL 0x004
+#define GC0308_ROW_STARTH 0x005
+#define GC0308_ROW_STARTL 0x006
+#define GC0308_COL_STARTH 0x007
+#define GC0308_COL_STARTL 0x008
+#define GC0308_WIN_HEIGHTH 0x009
+#define GC0308_WIN_HEIGHTL 0x00a
+#define GC0308_WIN_WIDTHH 0x00b
+#define GC0308_WIN_WIDTHL 0x00c
+#define GC0308_VS_ST 0x00d
+#define GC0308_VS_ET 0x00e
+#define GC0308_VB_HB 0x00f
+#define GC0308_RSH_WIDTH 0x010
+#define GC0308_TSP_WIDTH 0x011
+#define GC0308_SH_DELAY 0x012
+#define GC0308_ROW_TAIL_WIDTH 0x013
+#define GC0308_CISCTL_MODE1 0x014
+#define GC0308_CISCTL_MODE2 0x015
+#define GC0308_CISCTL_MODE3 0x016
+#define GC0308_CISCTL_MODE4 0x017
+#define GC0308_ANALOG_MODE1 0x01a
+#define GC0308_ANALOG_MODE2 0x01b
+#define GC0308_HRST_RSG_V18 0x01c
+#define GC0308_VREF_V25 0x01d
+#define GC0308_ADC_R 0x01e
+#define GC0308_PAD_DRV 0x01f
+#define GC0308_SOFT_RESET 0x0fe
+
+/* ISP */
+#define GC0308_BLOCK_EN1 0x020
+#define GC0308_BLOCK_EN2 0x021
+#define GC0308_AAAA_EN 0x022
+#define GC0308_SPECIAL_EFFECT 0x023
+#define GC0308_OUT_FORMAT 0x024
+#define GC0308_OUT_EN 0x025
+#define GC0308_SYNC_MODE 0x026
+#define GC0308_CLK_DIV_MODE 0x028
+#define GC0308_BYPASS_MODE 0x029
+#define GC0308_CLK_GATING 0x02a
+#define GC0308_DITHER_MODE 0x02b
+#define GC0308_DITHER_BIT 0x02c
+#define GC0308_DEBUG_MODE1 0x02d
+#define GC0308_DEBUG_MODE2 0x02e
+#define GC0308_DEBUG_MODE3 0x02f
+#define GC0308_CROP_WIN_MODE 0x046
+#define GC0308_CROP_WIN_Y1 0x047
+#define GC0308_CROP_WIN_X1 0x048
+#define GC0308_CROP_WIN_HEIGHTH 0x049
+#define GC0308_CROP_WIN_HEIGHTL 0x04a
+#define GC0308_CROP_WIN_WIDTHH 0x04b
+#define GC0308_CROP_WIN_WIDTHL 0x04c
+
+/* BLK */
+#define GC0308_BLK_MODE 0x030
+#define GC0308_BLK_LIMIT_VAL 0x031
+#define GC0308_GLOBAL_OFF 0x032
+#define GC0308_CURRENT_R_OFF 0x033
+#define GC0308_CURRENT_G_OFF 0x034
+#define GC0308_CURRENT_B_OFF 0x035
+#define GC0308_CURRENT_R_DARK_CURRENT 0x036
+#define GC0308_CURRENT_G_DARK_CURRENT 0x037
+#define GC0308_CURRENT_B_DARK_CURRENT 0x038
+#define GC0308_EXP_RATE_DARKC 0x039
+#define GC0308_OFF_SUBMODE 0x03a
+#define GC0308_DARKC_SUBMODE 0x03b
+#define GC0308_MANUAL_G1_OFF 0x03c
+#define GC0308_MANUAL_R1_OFF 0x03d
+#define GC0308_MANUAL_B2_OFF 0x03e
+#define GC0308_MANUAL_G2_OFF 0x03f
+
+/* PREGAIN */
+#define GC0308_GLOBAL_GAIN 0x050
+#define GC0308_AUTO_PREGAIN 0x051
+#define GC0308_AUTO_POSTGAIN 0x052
+#define GC0308_CHANNEL_GAIN_G1 0x053
+#define GC0308_CHANNEL_GAIN_R 0x054
+#define GC0308_CHANNEL_GAIN_B 0x055
+#define GC0308_CHANNEL_GAIN_G2 0x056
+#define GC0308_R_RATIO 0x057
+#define GC0308_G_RATIO 0x058
+#define GC0308_B_RATIO 0x059
+#define GC0308_AWB_R_GAIN 0x05a
+#define GC0308_AWB_G_GAIN 0x05b
+#define GC0308_AWB_B_GAIN 0x05c
+#define GC0308_LSC_DEC_LVL1 0x05d
+#define GC0308_LSC_DEC_LVL2 0x05e
+#define GC0308_LSC_DEC_LVL3 0x05f
+
+/* DNDD */
+#define GC0308_DN_MODE_EN 0x060
+#define GC0308_DN_MODE_RATIO 0x061
+#define GC0308_DN_BILAT_B_BASE 0x062
+#define GC0308_DN_B_INCR 0x063
+#define GC0308_DN_BILAT_N_BASE 0x064
+#define GC0308_DN_N_INCR 0x065
+#define GC0308_DD_DARK_BRIGHT_TH 0x066
+#define GC0308_DD_FLAT_TH 0x067
+#define GC0308_DD_LIMIT 0x068
+
+/* ASDE - Auto Saturation De-noise and Edge-Enhancement */
+#define GC0308_ASDE_GAIN_TRESH 0x069
+#define GC0308_ASDE_GAIN_MODE 0x06a
+#define GC0308_ASDE_DN_SLOPE 0x06b
+#define GC0308_ASDE_DD_BRIGHT 0x06c
+#define GC0308_ASDE_DD_LIMIT 0x06d
+#define GC0308_ASDE_AUTO_EE1 0x06e
+#define GC0308_ASDE_AUTO_EE2 0x06f
+#define GC0308_ASDE_AUTO_SAT_DEC_SLOPE 0x070
+#define GC0308_ASDE_AUTO_SAT_LOW_LIMIT 0x071
+
+/* INTPEE - Interpolation and Edge-Enhancement */
+#define GC0308_EEINTP_MODE_1 0x072
+#define GC0308_EEINTP_MODE_2 0x073
+#define GC0308_DIRECTION_TH1 0x074
+#define GC0308_DIRECTION_TH2 0x075
+#define GC0308_DIFF_HV_TI_TH 0x076
+#define GC0308_EDGE12_EFFECT 0x077
+#define GC0308_EDGE_POS_RATIO 0x078
+#define GC0308_EDGE1_MINMAX 0x079
+#define GC0308_EDGE2_MINMAX 0x07a
+#define GC0308_EDGE12_TH 0x07b
+#define GC0308_EDGE_MAX 0x07c
+
+/* ABB - Auto Black Balance */
+#define GC0308_ABB_MODE 0x080
+#define GC0308_ABB_TARGET_AVGH 0x081
+#define GC0308_ABB_TARGET_AVGL 0x082
+#define GC0308_ABB_LIMIT_VAL 0x083
+#define GC0308_ABB_SPEED 0x084
+#define GC0308_CURR_R_BLACK_LVL 0x085
+#define GC0308_CURR_G_BLACK_LVL 0x086
+#define GC0308_CURR_B_BLACK_LVL 0x087
+#define GC0308_CURR_R_BLACK_FACTOR 0x088
+#define GC0308_CURR_G_BLACK_FACTOR 0x089
+#define GC0308_CURR_B_BLACK_FACTOR 0x08a
+
+/* LSC - Lens Shading Correction */
+#define GC0308_LSC_RED_B2 0x08b
+#define GC0308_LSC_GREEN_B2 0x08c
+#define GC0308_LSC_BLUE_B2 0x08d
+#define GC0308_LSC_RED_B4 0x08e
+#define GC0308_LSC_GREEN_B4 0x08f
+#define GC0308_LSC_BLUE_B4 0x090
+#define GC0308_LSC_ROW_CENTER 0x091
+#define GC0308_LSC_COL_CENTER 0x092
+
+/* CC - Channel Coefficient */
+#define GC0308_CC_MATRIX_C11 0x093
+#define GC0308_CC_MATRIX_C12 0x094
+#define GC0308_CC_MATRIX_C13 0x095
+#define GC0308_CC_MATRIX_C21 0x096
+#define GC0308_CC_MATRIX_C22 0x097
+#define GC0308_CC_MATRIX_C23 0x098
+#define GC0308_CC_MATRIX_C41 0x09c
+#define GC0308_CC_MATRIX_C42 0x09d
+#define GC0308_CC_MATRIX_C43 0x09e
+
+/* GAMMA */
+#define GC0308_GAMMA_OUT0 0x09f
+#define GC0308_GAMMA_OUT1 0x0a0
+#define GC0308_GAMMA_OUT2 0x0a1
+#define GC0308_GAMMA_OUT3 0x0a2
+#define GC0308_GAMMA_OUT4 0x0a3
+#define GC0308_GAMMA_OUT5 0x0a4
+#define GC0308_GAMMA_OUT6 0x0a5
+#define GC0308_GAMMA_OUT7 0x0a6
+#define GC0308_GAMMA_OUT8 0x0a7
+#define GC0308_GAMMA_OUT9 0x0a8
+#define GC0308_GAMMA_OUT10 0x0a9
+#define GC0308_GAMMA_OUT11 0x0aa
+#define GC0308_GAMMA_OUT12 0x0ab
+#define GC0308_GAMMA_OUT13 0x0ac
+#define GC0308_GAMMA_OUT14 0x0ad
+#define GC0308_GAMMA_OUT15 0x0ae
+#define GC0308_GAMMA_OUT16 0x0af
+
+/* YCP */
+#define GC0308_GLOBAL_SATURATION 0x0b0
+#define GC0308_SATURATION_CB 0x0b1
+#define GC0308_SATURATION_CR 0x0b2
+#define GC0308_LUMA_CONTRAST 0x0b3
+#define GC0308_CONTRAST_CENTER 0x0b4
+#define GC0308_LUMA_OFFSET 0x0b5
+#define GC0308_SKIN_CB_CENTER 0x0b6
+#define GC0308_SKIN_CR_CENTER 0x0b7
+#define GC0308_SKIN_RADIUS_SQUARE 0x0b8
+#define GC0308_SKIN_BRIGHTNESS 0x0b9
+#define GC0308_FIXED_CB 0x0ba
+#define GC0308_FIXED_CR 0x0bb
+#define GC0308_EDGE_DEC_SA 0x0bd
+#define GC0308_AUTO_GRAY_MODE 0x0be
+#define GC0308_SATURATION_SUB_STRENGTH 0x0bf
+#define GC0308_Y_GAMMA_OUT0 0x0c0
+#define GC0308_Y_GAMMA_OUT1 0x0c1
+#define GC0308_Y_GAMMA_OUT2 0x0c2
+#define GC0308_Y_GAMMA_OUT3 0x0c3
+#define GC0308_Y_GAMMA_OUT4 0x0c4
+#define GC0308_Y_GAMMA_OUT5 0x0c5
+#define GC0308_Y_GAMMA_OUT6 0x0c6
+#define GC0308_Y_GAMMA_OUT7 0x0c7
+#define GC0308_Y_GAMMA_OUT8 0x0c8
+#define GC0308_Y_GAMMA_OUT9 0x0c9
+#define GC0308_Y_GAMMA_OUT10 0x0ca
+#define GC0308_Y_GAMMA_OUT11 0x0cb
+#define GC0308_Y_GAMMA_OUT12 0x0cc
+
+/* AEC - Automatic Exposure Control */
+#define GC0308_AEC_MODE1 0x0d0
+#define GC0308_AEC_MODE2 0x0d1
+#define GC0308_AEC_MODE3 0x0d2
+#define GC0308_AEC_TARGET_Y 0x0d3
+#define GC0308_Y_AVG 0x0d4
+#define GC0308_AEC_HIGH_LOW_RANGE 0x0d5
+#define GC0308_AEC_IGNORE 0x0d6
+#define GC0308_AEC_LIMIT_HIGH_RANGE 0x0d7
+#define GC0308_AEC_R_OFFSET 0x0d9
+#define GC0308_AEC_GB_OFFSET 0x0da
+#define GC0308_AEC_SLOW_MARGIN 0x0db
+#define GC0308_AEC_FAST_MARGIN 0x0dc
+#define GC0308_AEC_EXP_CHANGE_GAIN 0x0dd
+#define GC0308_AEC_STEP2_SUNLIGHT 0x0de
+#define GC0308_AEC_I_FRAMES 0x0df
+#define GC0308_AEC_I_STOP_L_MARGIN 0x0e0
+#define GC0308_AEC_I_STOP_MARGIN 0x0e1
+#define GC0308_ANTI_FLICKER_STEP_H 0x0e2
+#define GC0308_ANTI_FLICKER_STEP_L 0x0e3
+#define GC0308_EXP_LVL_1H 0x0e4
+#define GC0308_EXP_LVL_1L 0x0e5
+#define GC0308_EXP_LVL_2H 0x0e6
+#define GC0308_EXP_LVL_2L 0x0e7
+#define GC0308_EXP_LVL_3H 0x0e8
+#define GC0308_EXP_LVL_3L 0x0e9
+#define GC0308_EXP_LVL_4H 0x0ea
+#define GC0308_EXP_LVL_4L 0x0eb
+#define GC0308_MAX_EXP_LVL 0x0ec
+#define GC0308_EXP_MIN_L 0x0ed
+#define GC0308_MAX_POST_DF_GAIN 0x0ee
+#define GC0308_MAX_PRE_DG_GAIN 0x0ef
+
+/* ABS */
+#define GC0308_ABS_RANGE_COMP 0x0f0
+#define GC0308_ABS_STOP_MARGIN 0x0f1
+#define GC0308_Y_S_COMP 0x0f2
+#define GC0308_Y_STRETCH_LIMIT 0x0f3
+#define GC0308_Y_TILT 0x0f4
+#define GC0308_Y_STRETCH 0x0f5
+
+/* Measure Window */
+#define GC0308_BIG_WIN_X0 0x0f7
+#define GC0308_BIG_WIN_Y0 0x0f8
+#define GC0308_BIG_WIN_X1 0x0f9
+#define GC0308_BIG_WIN_Y1 0x0fa
+#define GC0308_DIFF_Y_BIG_THD 0x0fb
+
+/* OUT Module (P1) */
+#define GC0308_CLOSE_FRAME_EN 0x150
+#define GC0308_CLOSE_FRAME_NUM1 0x151
+#define GC0308_CLOSE_FRAME_NUM2 0x152
+#define GC0308_BAYER_MODE 0x153
+#define GC0308_SUBSAMPLE 0x154
+#define GC0308_SUBMODE 0x155
+#define GC0308_SUB_ROW_N1 0x156
+#define GC0308_SUB_ROW_N2 0x157
+#define GC0308_SUB_COL_N1 0x158
+#define GC0308_SUB_COL_N2 0x159
+
+/* AWB (P1) - Auto White Balance */
+#define GC0308_AWB_RGB_HIGH_LOW 0x100
+#define GC0308_AWB_Y_TO_C_DIFF2 0x102
+#define GC0308_AWB_C_MAX 0x104
+#define GC0308_AWB_C_INTER 0x105
+#define GC0308_AWB_C_INTER2 0x106
+#define GC0308_AWB_C_MAX_BIG 0x108
+#define GC0308_AWB_Y_HIGH 0x109
+#define GC0308_AWB_NUMBER_LIMIT 0x10a
+#define GC0308_KWIN_RATIO 0x10b
+#define GC0308_KWIN_THD 0x10c
+#define GC0308_LIGHT_GAIN_RANGE 0x10d
+#define GC0308_SMALL_WIN_WIDTH_STEP 0x10e
+#define GC0308_SMALL_WIN_HEIGHT_STEP 0x10f
+#define GC0308_AWB_YELLOW_TH 0x110
+#define GC0308_AWB_MODE 0x111
+#define GC0308_AWB_ADJUST_SPEED 0x112
+#define GC0308_AWB_EVERY_N 0x113
+#define GC0308_R_AVG_USE 0x1d0
+#define GC0308_G_AVG_USE 0x1d1
+#define GC0308_B_AVG_USE 0x1d2
+
+#define GC0308_FRAME_RATE 29
+
+enum gc0308_exp_val {
+ GC0308_EXP_M4 = 0,
+ GC0308_EXP_M3,
+ GC0308_EXP_M2,
+ GC0308_EXP_M1,
+ GC0308_EXP_0,
+ GC0308_EXP_P1,
+ GC0308_EXP_P2,
+ GC0308_EXP_P3,
+ GC0308_EXP_P4,
+};
+
+struct gc0308_exposure {
+ u8 luma_offset;
+ u8 aec_target_y;
+};
+
+#define GC0308_EXPOSURE(luma_offset_reg, aec_target_y_reg) \
+ { .luma_offset = luma_offset_reg, .aec_target_y = aec_target_y_reg }
+
+static const struct gc0308_exposure gc0308_exposure_values[] = {
+ [GC0308_EXP_M4] = GC0308_EXPOSURE(0xc0, 0x30),
+ [GC0308_EXP_M3] = GC0308_EXPOSURE(0xd0, 0x38),
+ [GC0308_EXP_M2] = GC0308_EXPOSURE(0xe0, 0x40),
+ [GC0308_EXP_M1] = GC0308_EXPOSURE(0xf0, 0x48),
+ [GC0308_EXP_0] = GC0308_EXPOSURE(0x08, 0x50),
+ [GC0308_EXP_P1] = GC0308_EXPOSURE(0x10, 0x5c),
+ [GC0308_EXP_P2] = GC0308_EXPOSURE(0x20, 0x60),
+ [GC0308_EXP_P3] = GC0308_EXPOSURE(0x30, 0x68),
+ [GC0308_EXP_P4] = GC0308_EXPOSURE(0x40, 0x70),
+};
+
+struct gc0308_awb_gains {
+ u8 r;
+ u8 g;
+ u8 b;
+};
+
+#define GC0308_AWB_GAINS(red, green, blue) \
+ { .r = red, .g = green, .b = blue }
+
+static const struct gc0308_awb_gains gc0308_awb_gains[] = {
+ [V4L2_WHITE_BALANCE_AUTO] = GC0308_AWB_GAINS(0x56, 0x40, 0x4a),
+ [V4L2_WHITE_BALANCE_CLOUDY] = GC0308_AWB_GAINS(0x8c, 0x50, 0x40),
+ [V4L2_WHITE_BALANCE_DAYLIGHT] = GC0308_AWB_GAINS(0x74, 0x52, 0x40),
+ [V4L2_WHITE_BALANCE_INCANDESCENT] = GC0308_AWB_GAINS(0x48, 0x40, 0x5c),
+ [V4L2_WHITE_BALANCE_FLUORESCENT] = GC0308_AWB_GAINS(0x40, 0x42, 0x50),
+};
+
+struct gc0308_format {
+ u32 code;
+ u8 regval;
+};
+
+#define GC0308_FORMAT(v4l2_code, gc0308_regval) \
+ { .code = v4l2_code, .regval = gc0308_regval }
+
+static const struct gc0308_format gc0308_formats[] = {
+ GC0308_FORMAT(MEDIA_BUS_FMT_UYVY8_2X8, 0x00),
+ GC0308_FORMAT(MEDIA_BUS_FMT_VYUY8_2X8, 0x01),
+ GC0308_FORMAT(MEDIA_BUS_FMT_YUYV8_2X8, 0x02),
+ GC0308_FORMAT(MEDIA_BUS_FMT_YVYU8_2X8, 0x03),
+ GC0308_FORMAT(MEDIA_BUS_FMT_RGB565_2X8_BE, 0x06),
+ GC0308_FORMAT(MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, 0x07),
+ GC0308_FORMAT(MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE, 0x09),
+};
+
+struct gc0308_frame_size {
+ u8 subsample;
+ u16 width;
+ u16 height;
+};
+
+#define GC0308_FRAME_SIZE(s, w, h) \
+ { .subsample = s, .width = w, .height = h }
+
+static const struct gc0308_frame_size gc0308_frame_sizes[] = {
+ GC0308_FRAME_SIZE(0x11, 640, 480),
+ GC0308_FRAME_SIZE(0x22, 320, 240),
+ GC0308_FRAME_SIZE(0x44, 160, 120),
+};
+
+struct gc0308 {
+ struct v4l2_subdev sd;
+ struct v4l2_ctrl_handler hdl;
+ struct media_pad pad;
+ struct v4l2_mbus_framefmt format;
+ struct device *dev;
+ struct clk *clk;
+ struct regmap *regmap;
+ struct regulator *vdd;
+ struct gpio_desc *pwdn_gpio;
+ struct gpio_desc *reset_gpio;
+ struct mutex lock; /* mutex lock for operations */
+ bool streaming;
+ unsigned int mbus_config;
+ struct v4l2_fract frame_interval;
+};
+
+static inline struct gc0308 *to_gc0308(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct gc0308, sd);
+}
+
+static const struct regmap_range_cfg gc0308_ranges[] = {
+ {
+ .range_min = 0x0000,
+ .range_max = 0x01ff,
+ .selector_reg = 0xfe,
+ .selector_mask = 0x01,
+ .selector_shift = 0x00,
+ .window_start = 0x00,
+ .window_len = 0x100,
+ },
+};
+
+static const struct regmap_config gc0308_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x1ff,
+ .ranges = gc0308_ranges,
+ .num_ranges = ARRAY_SIZE(gc0308_ranges),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static const struct reg_sequence sensor_default_regs[] = {
+ REG_SEQ0(GC0308_VB_HB, 0x00),
+ REG_SEQ0(GC0308_HBLANK, 0x40),
+ REG_SEQ0(GC0308_VBLANK, 0x20),
+ REG_SEQ0(GC0308_EXPH, 0x02),
+ REG_SEQ0(GC0308_EXPL, 0x58),
+ REG_SEQ0(GC0308_AWB_R_GAIN, 0x56),
+ REG_SEQ0(GC0308_AWB_G_GAIN, 0x40),
+ REG_SEQ0(GC0308_AWB_B_GAIN, 0x4a),
+ REG_SEQ0(GC0308_ANTI_FLICKER_STEP_H, 0x00),
+ REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x78),
+ REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
+ REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
+ REG_SEQ0(GC0308_EXP_LVL_2H, 0x02),
+ REG_SEQ0(GC0308_EXP_LVL_2L, 0x58),
+ REG_SEQ0(GC0308_EXP_LVL_3H, 0x02),
+ REG_SEQ0(GC0308_EXP_LVL_3L, 0x58),
+ REG_SEQ0(GC0308_EXP_LVL_4H, 0x0e),
+ REG_SEQ0(GC0308_EXP_LVL_4L, 0xa6),
+ REG_SEQ0(GC0308_MAX_EXP_LVL, 0x20),
+ REG_SEQ0(GC0308_ROW_STARTH, 0x00),
+ REG_SEQ0(GC0308_ROW_STARTL, 0x00),
+ REG_SEQ0(GC0308_COL_STARTH, 0x00),
+ REG_SEQ0(GC0308_COL_STARTL, 0x00),
+ REG_SEQ0(GC0308_WIN_HEIGHTH, 0x01), /* 0x1e8 = 488 => VT=480 */
+ REG_SEQ0(GC0308_WIN_HEIGHTL, 0xe8),
+ REG_SEQ0(GC0308_WIN_WIDTHH, 0x02), /* 0x288 = 648 => VH=640 */
+ REG_SEQ0(GC0308_WIN_WIDTHL, 0x88),
+ REG_SEQ0(GC0308_VS_ST, 0x02), /* Start Time (in rows) */
+ REG_SEQ0(GC0308_VS_ET, 0x02), /* End Time (in rows) */
+ REG_SEQ0(GC0308_RSH_WIDTH, 0x22),
+ REG_SEQ0(GC0308_TSP_WIDTH, 0x0d),
+ REG_SEQ0(GC0308_SH_DELAY, 0x50), /* sample hold delay post row finish */
+ REG_SEQ0(GC0308_ROW_TAIL_WIDTH, 0x0f),
+ REG_SEQ0(GC0308_CISCTL_MODE1, 0x10),
+ REG_SEQ0(GC0308_CISCTL_MODE2, 0x0a),
+ REG_SEQ0(GC0308_CISCTL_MODE3, 0x05),
+ REG_SEQ0(GC0308_CISCTL_MODE4, 0x01),
+ REG_SEQ0(0x018, 0x44), /* undocumented */
+ REG_SEQ0(0x019, 0x44), /* undocumented */
+ REG_SEQ0(GC0308_ANALOG_MODE1, 0x2a),
+ REG_SEQ0(GC0308_ANALOG_MODE2, 0x00),
+ REG_SEQ0(GC0308_HRST_RSG_V18, 0x49),
+ REG_SEQ0(GC0308_VREF_V25, 0x9a),
+ REG_SEQ0(GC0308_ADC_R, 0x61),
+ REG_SEQ0(GC0308_PAD_DRV, 0x01), /* drv strength: pclk=4mA */
+ REG_SEQ0(GC0308_BLOCK_EN1, 0x7f),
+ REG_SEQ0(GC0308_BLOCK_EN2, 0xfa),
+ REG_SEQ0(GC0308_AAAA_EN, 0x57),
+ REG_SEQ0(GC0308_OUT_FORMAT, 0xa2), /* YCbYCr */
+ REG_SEQ0(GC0308_OUT_EN, 0x0f),
+ REG_SEQ0(GC0308_SYNC_MODE, 0x03),
+ REG_SEQ0(GC0308_CLK_DIV_MODE, 0x00),
+ REG_SEQ0(GC0308_DEBUG_MODE1, 0x0a),
+ REG_SEQ0(GC0308_DEBUG_MODE2, 0x00),
+ REG_SEQ0(GC0308_DEBUG_MODE3, 0x01),
+ REG_SEQ0(GC0308_BLK_MODE, 0xf7),
+ REG_SEQ0(GC0308_BLK_LIMIT_VAL, 0x50),
+ REG_SEQ0(GC0308_GLOBAL_OFF, 0x00),
+ REG_SEQ0(GC0308_CURRENT_R_OFF, 0x28),
+ REG_SEQ0(GC0308_CURRENT_G_OFF, 0x2a),
+ REG_SEQ0(GC0308_CURRENT_B_OFF, 0x28),
+ REG_SEQ0(GC0308_EXP_RATE_DARKC, 0x04),
+ REG_SEQ0(GC0308_OFF_SUBMODE, 0x20),
+ REG_SEQ0(GC0308_DARKC_SUBMODE, 0x20),
+ REG_SEQ0(GC0308_MANUAL_G1_OFF, 0x00),
+ REG_SEQ0(GC0308_MANUAL_R1_OFF, 0x00),
+ REG_SEQ0(GC0308_MANUAL_B2_OFF, 0x00),
+ REG_SEQ0(GC0308_MANUAL_G2_OFF, 0x00),
+ REG_SEQ0(GC0308_GLOBAL_GAIN, 0x14),
+ REG_SEQ0(GC0308_AUTO_POSTGAIN, 0x41),
+ REG_SEQ0(GC0308_CHANNEL_GAIN_G1, 0x80),
+ REG_SEQ0(GC0308_CHANNEL_GAIN_R, 0x80),
+ REG_SEQ0(GC0308_CHANNEL_GAIN_B, 0x80),
+ REG_SEQ0(GC0308_CHANNEL_GAIN_G2, 0x80),
+ REG_SEQ0(GC0308_LSC_RED_B2, 0x20),
+ REG_SEQ0(GC0308_LSC_GREEN_B2, 0x20),
+ REG_SEQ0(GC0308_LSC_BLUE_B2, 0x20),
+ REG_SEQ0(GC0308_LSC_RED_B4, 0x14),
+ REG_SEQ0(GC0308_LSC_GREEN_B4, 0x10),
+ REG_SEQ0(GC0308_LSC_BLUE_B4, 0x14),
+ REG_SEQ0(GC0308_LSC_ROW_CENTER, 0x3c),
+ REG_SEQ0(GC0308_LSC_COL_CENTER, 0x50),
+ REG_SEQ0(GC0308_LSC_DEC_LVL1, 0x12),
+ REG_SEQ0(GC0308_LSC_DEC_LVL2, 0x1a),
+ REG_SEQ0(GC0308_LSC_DEC_LVL3, 0x24),
+ REG_SEQ0(GC0308_DN_MODE_EN, 0x07),
+ REG_SEQ0(GC0308_DN_MODE_RATIO, 0x15),
+ REG_SEQ0(GC0308_DN_BILAT_B_BASE, 0x08),
+ REG_SEQ0(GC0308_DN_BILAT_N_BASE, 0x03),
+ REG_SEQ0(GC0308_DD_DARK_BRIGHT_TH, 0xe8),
+ REG_SEQ0(GC0308_DD_FLAT_TH, 0x86),
+ REG_SEQ0(GC0308_DD_LIMIT, 0x82),
+ REG_SEQ0(GC0308_ASDE_GAIN_TRESH, 0x18),
+ REG_SEQ0(GC0308_ASDE_GAIN_MODE, 0x0f),
+ REG_SEQ0(GC0308_ASDE_DN_SLOPE, 0x00),
+ REG_SEQ0(GC0308_ASDE_DD_BRIGHT, 0x5f),
+ REG_SEQ0(GC0308_ASDE_DD_LIMIT, 0x8f),
+ REG_SEQ0(GC0308_ASDE_AUTO_EE1, 0x55),
+ REG_SEQ0(GC0308_ASDE_AUTO_EE2, 0x38),
+ REG_SEQ0(GC0308_ASDE_AUTO_SAT_DEC_SLOPE, 0x15),
+ REG_SEQ0(GC0308_ASDE_AUTO_SAT_LOW_LIMIT, 0x33),
+ REG_SEQ0(GC0308_EEINTP_MODE_1, 0xdc),
+ REG_SEQ0(GC0308_EEINTP_MODE_2, 0x00),
+ REG_SEQ0(GC0308_DIRECTION_TH1, 0x02),
+ REG_SEQ0(GC0308_DIRECTION_TH2, 0x3f),
+ REG_SEQ0(GC0308_DIFF_HV_TI_TH, 0x02),
+ REG_SEQ0(GC0308_EDGE12_EFFECT, 0x38),
+ REG_SEQ0(GC0308_EDGE_POS_RATIO, 0x88),
+ REG_SEQ0(GC0308_EDGE1_MINMAX, 0x81),
+ REG_SEQ0(GC0308_EDGE2_MINMAX, 0x81),
+ REG_SEQ0(GC0308_EDGE12_TH, 0x22),
+ REG_SEQ0(GC0308_EDGE_MAX, 0xff),
+ REG_SEQ0(GC0308_CC_MATRIX_C11, 0x48),
+ REG_SEQ0(GC0308_CC_MATRIX_C12, 0x02),
+ REG_SEQ0(GC0308_CC_MATRIX_C13, 0x07),
+ REG_SEQ0(GC0308_CC_MATRIX_C21, 0xe0),
+ REG_SEQ0(GC0308_CC_MATRIX_C22, 0x40),
+ REG_SEQ0(GC0308_CC_MATRIX_C23, 0xf0),
+ REG_SEQ0(GC0308_SATURATION_CB, 0x40),
+ REG_SEQ0(GC0308_SATURATION_CR, 0x40),
+ REG_SEQ0(GC0308_LUMA_CONTRAST, 0x40),
+ REG_SEQ0(GC0308_SKIN_CB_CENTER, 0xe0),
+ REG_SEQ0(GC0308_EDGE_DEC_SA, 0x38),
+ REG_SEQ0(GC0308_AUTO_GRAY_MODE, 0x36),
+ REG_SEQ0(GC0308_AEC_MODE1, 0xcb),
+ REG_SEQ0(GC0308_AEC_MODE2, 0x10),
+ REG_SEQ0(GC0308_AEC_MODE3, 0x90),
+ REG_SEQ0(GC0308_AEC_TARGET_Y, 0x48),
+ REG_SEQ0(GC0308_AEC_HIGH_LOW_RANGE, 0xf2),
+ REG_SEQ0(GC0308_AEC_IGNORE, 0x16),
+ REG_SEQ0(GC0308_AEC_SLOW_MARGIN, 0x92),
+ REG_SEQ0(GC0308_AEC_FAST_MARGIN, 0xa5),
+ REG_SEQ0(GC0308_AEC_I_FRAMES, 0x23),
+ REG_SEQ0(GC0308_AEC_R_OFFSET, 0x00),
+ REG_SEQ0(GC0308_AEC_GB_OFFSET, 0x00),
+ REG_SEQ0(GC0308_AEC_I_STOP_L_MARGIN, 0x09),
+ REG_SEQ0(GC0308_EXP_MIN_L, 0x04),
+ REG_SEQ0(GC0308_MAX_POST_DF_GAIN, 0xa0),
+ REG_SEQ0(GC0308_MAX_PRE_DG_GAIN, 0x40),
+ REG_SEQ0(GC0308_ABB_MODE, 0x03),
+ REG_SEQ0(GC0308_GAMMA_OUT0, 0x10),
+ REG_SEQ0(GC0308_GAMMA_OUT1, 0x20),
+ REG_SEQ0(GC0308_GAMMA_OUT2, 0x38),
+ REG_SEQ0(GC0308_GAMMA_OUT3, 0x4e),
+ REG_SEQ0(GC0308_GAMMA_OUT4, 0x63),
+ REG_SEQ0(GC0308_GAMMA_OUT5, 0x76),
+ REG_SEQ0(GC0308_GAMMA_OUT6, 0x87),
+ REG_SEQ0(GC0308_GAMMA_OUT7, 0xa2),
+ REG_SEQ0(GC0308_GAMMA_OUT8, 0xb8),
+ REG_SEQ0(GC0308_GAMMA_OUT9, 0xca),
+ REG_SEQ0(GC0308_GAMMA_OUT10, 0xd8),
+ REG_SEQ0(GC0308_GAMMA_OUT11, 0xe3),
+ REG_SEQ0(GC0308_GAMMA_OUT12, 0xeb),
+ REG_SEQ0(GC0308_GAMMA_OUT13, 0xf0),
+ REG_SEQ0(GC0308_GAMMA_OUT14, 0xf8),
+ REG_SEQ0(GC0308_GAMMA_OUT15, 0xfd),
+ REG_SEQ0(GC0308_GAMMA_OUT16, 0xff),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT0, 0x00),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT1, 0x10),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT2, 0x1c),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT3, 0x30),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT4, 0x43),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT5, 0x54),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT6, 0x65),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT7, 0x75),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT8, 0x93),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT9, 0xb0),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT10, 0xcb),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT11, 0xe6),
+ REG_SEQ0(GC0308_Y_GAMMA_OUT12, 0xff),
+ REG_SEQ0(GC0308_ABS_RANGE_COMP, 0x02),
+ REG_SEQ0(GC0308_ABS_STOP_MARGIN, 0x01),
+ REG_SEQ0(GC0308_Y_S_COMP, 0x02),
+ REG_SEQ0(GC0308_Y_STRETCH_LIMIT, 0x30),
+ REG_SEQ0(GC0308_BIG_WIN_X0, 0x12),
+ REG_SEQ0(GC0308_BIG_WIN_Y0, 0x0a),
+ REG_SEQ0(GC0308_BIG_WIN_X1, 0x9f),
+ REG_SEQ0(GC0308_BIG_WIN_Y1, 0x78),
+ REG_SEQ0(GC0308_AWB_RGB_HIGH_LOW, 0xf5),
+ REG_SEQ0(GC0308_AWB_Y_TO_C_DIFF2, 0x20),
+ REG_SEQ0(GC0308_AWB_C_MAX, 0x10),
+ REG_SEQ0(GC0308_AWB_C_INTER, 0x08),
+ REG_SEQ0(GC0308_AWB_C_INTER2, 0x20),
+ REG_SEQ0(GC0308_AWB_C_MAX_BIG, 0x0a),
+ REG_SEQ0(GC0308_AWB_NUMBER_LIMIT, 0xa0),
+ REG_SEQ0(GC0308_KWIN_RATIO, 0x60),
+ REG_SEQ0(GC0308_KWIN_THD, 0x08),
+ REG_SEQ0(GC0308_SMALL_WIN_WIDTH_STEP, 0x44),
+ REG_SEQ0(GC0308_SMALL_WIN_HEIGHT_STEP, 0x32),
+ REG_SEQ0(GC0308_AWB_YELLOW_TH, 0x41),
+ REG_SEQ0(GC0308_AWB_MODE, 0x37),
+ REG_SEQ0(GC0308_AWB_ADJUST_SPEED, 0x22),
+ REG_SEQ0(GC0308_AWB_EVERY_N, 0x19),
+ REG_SEQ0(0x114, 0x44), /* AWB set1 */
+ REG_SEQ0(0x115, 0x44), /* AWB set1 */
+ REG_SEQ0(0x116, 0xc2), /* AWB set1 */
+ REG_SEQ0(0x117, 0xa8), /* AWB set1 */
+ REG_SEQ0(0x118, 0x18), /* AWB set1 */
+ REG_SEQ0(0x119, 0x50), /* AWB set1 */
+ REG_SEQ0(0x11a, 0xd8), /* AWB set1 */
+ REG_SEQ0(0x11b, 0xf5), /* AWB set1 */
+ REG_SEQ0(0x170, 0x40), /* AWB set2 */
+ REG_SEQ0(0x171, 0x58), /* AWB set2 */
+ REG_SEQ0(0x172, 0x30), /* AWB set2 */
+ REG_SEQ0(0x173, 0x48), /* AWB set2 */
+ REG_SEQ0(0x174, 0x20), /* AWB set2 */
+ REG_SEQ0(0x175, 0x60), /* AWB set2 */
+ REG_SEQ0(0x177, 0x20), /* AWB set2 */
+ REG_SEQ0(0x178, 0x32), /* AWB set2 */
+ REG_SEQ0(0x130, 0x03), /* undocumented */
+ REG_SEQ0(0x131, 0x40), /* undocumented */
+ REG_SEQ0(0x132, 0x10), /* undocumented */
+ REG_SEQ0(0x133, 0xe0), /* undocumented */
+ REG_SEQ0(0x134, 0xe0), /* undocumented */
+ REG_SEQ0(0x135, 0x00), /* undocumented */
+ REG_SEQ0(0x136, 0x80), /* undocumented */
+ REG_SEQ0(0x137, 0x00), /* undocumented */
+ REG_SEQ0(0x138, 0x04), /* undocumented */
+ REG_SEQ0(0x139, 0x09), /* undocumented */
+ REG_SEQ0(0x13a, 0x12), /* undocumented */
+ REG_SEQ0(0x13b, 0x1c), /* undocumented */
+ REG_SEQ0(0x13c, 0x28), /* undocumented */
+ REG_SEQ0(0x13d, 0x31), /* undocumented */
+ REG_SEQ0(0x13e, 0x44), /* undocumented */
+ REG_SEQ0(0x13f, 0x57), /* undocumented */
+ REG_SEQ0(0x140, 0x6c), /* undocumented */
+ REG_SEQ0(0x141, 0x81), /* undocumented */
+ REG_SEQ0(0x142, 0x94), /* undocumented */
+ REG_SEQ0(0x143, 0xa7), /* undocumented */
+ REG_SEQ0(0x144, 0xb8), /* undocumented */
+ REG_SEQ0(0x145, 0xd6), /* undocumented */
+ REG_SEQ0(0x146, 0xee), /* undocumented */
+ REG_SEQ0(0x147, 0x0d), /* undocumented */
+ REG_SEQ0(0x162, 0xf7), /* undocumented */
+ REG_SEQ0(0x163, 0x68), /* undocumented */
+ REG_SEQ0(0x164, 0xd3), /* undocumented */
+ REG_SEQ0(0x165, 0xd3), /* undocumented */
+ REG_SEQ0(0x166, 0x60), /* undocumented */
+};
+
+struct gc0308_colormode {
+ u8 special_effect;
+ u8 dbg_mode1;
+ u8 block_en1;
+ u8 aec_mode3;
+ u8 eeintp_mode_2;
+ u8 edge12_effect;
+ u8 luma_contrast;
+ u8 contrast_center;
+ u8 fixed_cb;
+ u8 fixed_cr;
+};
+
+#define GC0308_COLOR_FX(reg_special_effect, reg_dbg_mode1, reg_block_en1, \
+ reg_aec_mode3, reg_eeintp_mode_2, reg_edge12_effect, \
+ reg_luma_contrast, reg_contrast_center, \
+ reg_fixed_cb, reg_fixed_cr) \
+ { \
+ .special_effect = reg_special_effect, \
+ .dbg_mode1 = reg_dbg_mode1, \
+ .block_en1 = reg_block_en1, \
+ .aec_mode3 = reg_aec_mode3, \
+ .eeintp_mode_2 = reg_eeintp_mode_2, \
+ .edge12_effect = reg_edge12_effect, \
+ .luma_contrast = reg_luma_contrast, \
+ .contrast_center = reg_contrast_center, \
+ .fixed_cb = reg_fixed_cb, \
+ .fixed_cr = reg_fixed_cr, \
+ }
+
+static const struct gc0308_colormode gc0308_colormodes[] = {
+ [V4L2_COLORFX_NONE] =
+ GC0308_COLOR_FX(0x00, 0x0a, 0xff, 0x90, 0x00,
+ 0x54, 0x3c, 0x80, 0x00, 0x00),
+ [V4L2_COLORFX_BW] =
+ GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
+ 0x54, 0x40, 0x80, 0x00, 0x00),
+ [V4L2_COLORFX_SEPIA] =
+ GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
+ 0x38, 0x40, 0x80, 0xd0, 0x28),
+ [V4L2_COLORFX_NEGATIVE] =
+ GC0308_COLOR_FX(0x01, 0x0a, 0xff, 0x90, 0x00,
+ 0x38, 0x40, 0x80, 0x00, 0x00),
+ [V4L2_COLORFX_EMBOSS] =
+ GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01,
+ 0x38, 0x40, 0x80, 0x00, 0x00),
+ [V4L2_COLORFX_SKETCH] =
+ GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x10, 0x80,
+ 0x38, 0x80, 0x90, 0x00, 0x00),
+ [V4L2_COLORFX_SKY_BLUE] =
+ GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
+ 0x38, 0x40, 0x80, 0x50, 0xe0),
+ [V4L2_COLORFX_GRASS_GREEN] =
+ GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x01,
+ 0x38, 0x40, 0x80, 0xc0, 0xc0),
+ [V4L2_COLORFX_SKIN_WHITEN] =
+ GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01,
+ 0x38, 0x60, 0x40, 0x00, 0x00),
+};
+
+static const struct reg_sequence sensor_banding_50hz[] = {
+ REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x78),
+ REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
+ REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
+ REG_SEQ0(GC0308_EXP_LVL_2H, 0x03),
+ REG_SEQ0(GC0308_EXP_LVL_2L, 0x48),
+ REG_SEQ0(GC0308_EXP_LVL_3H, 0x04),
+ REG_SEQ0(GC0308_EXP_LVL_3L, 0xb0),
+ REG_SEQ0(GC0308_EXP_LVL_4H, 0x05),
+ REG_SEQ0(GC0308_EXP_LVL_4L, 0xa0),
+};
+
+static const struct reg_sequence sensor_banding_60hz[] = {
+ REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x64),
+ REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
+ REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
+ REG_SEQ0(GC0308_EXP_LVL_2H, 0x03),
+ REG_SEQ0(GC0308_EXP_LVL_2L, 0x84),
+ REG_SEQ0(GC0308_EXP_LVL_3H, 0x04),
+ REG_SEQ0(GC0308_EXP_LVL_3L, 0xb0),
+ REG_SEQ0(GC0308_EXP_LVL_4H, 0x05),
+ REG_SEQ0(GC0308_EXP_LVL_4L, 0xdc),
+};
+
+static int gc0308_power_on(struct device *dev)
+{
+ struct gc0308 *gc0308 = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(gc0308->clk);
+ if (ret)
+ return ret;
+
+ gpiod_set_value_cansleep(gc0308->pwdn_gpio, 0);
+ usleep_range(10000, 20000);
+
+ gpiod_set_value_cansleep(gc0308->reset_gpio, 1);
+ msleep(100);
+ gpiod_set_value_cansleep(gc0308->reset_gpio, 0);
+ msleep(100);
+
+ return 0;
+}
+
+static int gc0308_power_off(struct device *dev)
+{
+ struct gc0308 *gc0308 = dev_get_drvdata(dev);
+
+ gpiod_set_value_cansleep(gc0308->pwdn_gpio, 1);
+ clk_disable_unprepare(gc0308->clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int gc0308_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct gc0308 *gc0308 = to_gc0308(sd);
+ int ret, val;
+
+ ret = regmap_read(gc0308->regmap, reg->reg, &val);
+ if (ret)
+ return ret;
+
+ reg->val = val;
+ return 0;
+}
+
+static int gc0308_s_register(struct v4l2_subdev *sd,
+ const struct v4l2_dbg_register *reg)
+{
+ struct gc0308 *gc0308 = to_gc0308(sd);
+
+ return regmap_write(gc0308->regmap, reg->reg, reg->val);
+}
+#endif
+
+static int gc0308_s_format(struct gc0308 *gc0308)
+{
+ u32 i;
+
+ for (i = 0; i < ARRAY_SIZE(gc0308_formats); i++) {
+ if (gc0308->format.code != gc0308_formats[i].code)
+ continue;
+ return regmap_update_bits(gc0308->regmap,
+ GC0308_OUT_FORMAT, GENMASK(4, 0),
+ gc0308_formats[i].regval);
+ }
+
+ return -EINVAL;
+}
+
+static int gc0308_set_exposure(struct gc0308 *gc0308, enum gc0308_exp_val exp)
+{
+ const struct gc0308_exposure *regs = &gc0308_exposure_values[exp];
+ struct reg_sequence exposure_reg_seq[] = {
+ REG_SEQ0(GC0308_LUMA_OFFSET, regs->luma_offset),
+ REG_SEQ0(GC0308_AEC_TARGET_Y, regs->aec_target_y),
+ };
+
+ return regmap_multi_reg_write(gc0308->regmap,
+ exposure_reg_seq, ARRAY_SIZE(exposure_reg_seq));
+}
+
+static int gc0308_set_awb_mode(struct gc0308 *gc0308,
+ enum v4l2_auto_n_preset_white_balance val)
+{
+ const struct gc0308_awb_gains *regs = &gc0308_awb_gains[val];
+ struct reg_sequence awb_reg_seq[] = {
+ REG_SEQ0(GC0308_AWB_R_GAIN, regs->r),
+ REG_SEQ0(GC0308_AWB_G_GAIN, regs->g),
+ REG_SEQ0(GC0308_AWB_B_GAIN, regs->b),
+ };
+ int ret;
+
+ ret = regmap_update_bits(gc0308->regmap, GC0308_AAAA_EN,
+ BIT(1), val == V4L2_WHITE_BALANCE_AUTO);
+ if (ret)
+ return ret;
+
+ return regmap_multi_reg_write(gc0308->regmap,
+ awb_reg_seq, ARRAY_SIZE(awb_reg_seq));
+
+ return 0;
+}
+
+static int gc0308_set_colormode(struct gc0308 *gc0308, enum v4l2_colorfx mode)
+{
+ const struct gc0308_colormode *regs = &gc0308_colormodes[mode];
+ struct reg_sequence colormode_reg_seq[] = {
+ REG_SEQ0(GC0308_SPECIAL_EFFECT, regs->special_effect),
+ REG_SEQ0(GC0308_DEBUG_MODE1, regs->dbg_mode1),
+ REG_SEQ0(GC0308_BLOCK_EN1, regs->block_en1),
+ REG_SEQ0(GC0308_AEC_MODE3, regs->aec_mode3),
+ REG_SEQ0(GC0308_EEINTP_MODE_2, regs->eeintp_mode_2),
+ REG_SEQ0(GC0308_EDGE12_EFFECT, regs->edge12_effect),
+ REG_SEQ0(GC0308_LUMA_CONTRAST, regs->luma_contrast),
+ REG_SEQ0(GC0308_CONTRAST_CENTER, regs->contrast_center),
+ REG_SEQ0(GC0308_FIXED_CB, regs->fixed_cb),
+ REG_SEQ0(GC0308_FIXED_CR, regs->fixed_cr),
+ };
+
+ return regmap_multi_reg_write(gc0308->regmap,
+ colormode_reg_seq, ARRAY_SIZE(colormode_reg_seq));
+}
+
+static int _gc0308_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl);
+ uint8_t flipval = ctrl->val ? 0xff : 0x00;
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ return regmap_update_bits(gc0308->regmap,
+ GC0308_CISCTL_MODE1, BIT(1), flipval);
+ case V4L2_CID_HFLIP:
+ return regmap_update_bits(gc0308->regmap,
+ GC0308_CISCTL_MODE1, BIT(0), flipval);
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ return regmap_update_bits(gc0308->regmap,
+ GC0308_AAAA_EN, BIT(1), flipval);
+ case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
+ if (ctrl->val < 0 || ctrl->val > V4L2_WHITE_BALANCE_CLOUDY)
+ return -EINVAL;
+ return gc0308_set_awb_mode(gc0308, ctrl->val);
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ switch (ctrl->val) {
+ case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
+ return regmap_multi_reg_write(gc0308->regmap,
+ sensor_banding_60hz,
+ ARRAY_SIZE(sensor_banding_60hz));
+ case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
+ default:
+ return regmap_multi_reg_write(gc0308->regmap,
+ sensor_banding_50hz,
+ ARRAY_SIZE(sensor_banding_50hz));
+ }
+ case V4L2_CID_COLORFX:
+ if (ctrl->val < 0 || ctrl->val >= ARRAY_SIZE(gc0308_colormodes))
+ return -EINVAL;
+ return gc0308_set_colormode(gc0308, ctrl->val);
+ case V4L2_CID_TEST_PATTERN:
+ if (ctrl->val < 0 || ctrl->val > 2)
+ return -EINVAL;
+ return regmap_update_bits(gc0308->regmap,
+ GC0308_DEBUG_MODE2, GENMASK(1, 0), ctrl->val);
+ case V4L2_CID_EXPOSURE:
+ if (ctrl->val < -4 || ctrl->val > 4)
+ return -EINVAL;
+ return gc0308_set_exposure(gc0308, ctrl->val + 4);
+ }
+
+ return -EINVAL;
+}
+
+static int gc0308_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl);
+ int ret;
+
+ ret = pm_runtime_resume_and_get(gc0308->dev);
+ if (ret < 0)
+ return ret;
+
+ ret = _gc0308_s_ctrl(ctrl);
+
+ pm_runtime_put(gc0308->dev);
+
+ if (ret)
+ dev_err(gc0308->dev, "s_ctrl failed: %d\n", ret);
+
+ return ret;
+}
+
+
+static const struct v4l2_ctrl_ops gc0308_ctrl_ops = {
+ .s_ctrl = gc0308_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops gc0308_core_ops = {
+ .log_status = v4l2_ctrl_subdev_log_status,
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = gc0308_g_register,
+ .s_register = gc0308_s_register,
+#endif
+};
+
+static int gc0308_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index >= ARRAY_SIZE(gc0308_formats))
+ return -EINVAL;
+
+ code->code = gc0308_formats[code->index].code;
+
+ return 0;
+}
+
+static int gc0308_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ if (fse->pad || fse->index >= ARRAY_SIZE(gc0308_frame_sizes))
+ return -EINVAL;
+
+ fse->min_width = gc0308_frame_sizes[fse->index].width;
+ fse->max_width = gc0308_frame_sizes[fse->index].width;
+ fse->min_height = gc0308_frame_sizes[fse->index].height;
+ fse->max_height = gc0308_frame_sizes[fse->index].height;
+
+ return 0;
+}
+
+static int gc0308_get_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *fmt)
+{
+ struct gc0308 *gc0308 = to_gc0308(sd);
+
+ mutex_lock(&gc0308->lock);
+ fmt->format = gc0308->format;
+ mutex_unlock(&gc0308->lock);
+
+ return 0;
+}
+
+static int gc0308_set_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *format)
+{
+ struct gc0308 *gc0308 = to_gc0308(sd);
+ int format_idx = -1;
+ unsigned int best_fit = ~0L;
+ unsigned int idx = 0;
+ unsigned int i;
+
+ mutex_lock(&gc0308->lock);
+ if (gc0308->streaming) {
+ mutex_unlock(&gc0308->lock);
+ return -EBUSY;
+ }
+
+ if (format->pad) {
+ mutex_unlock(&gc0308->lock);
+ dev_err(gc0308->dev, "invalid pad: %d\n", format->pad);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(gc0308_formats); i++) {
+ if (format->format.code == gc0308_formats[i].code) {
+ format_idx = i;
+ break;
+ }
+ }
+ if (format_idx < 0) {
+ mutex_unlock(&gc0308->lock);
+ dev_err(gc0308->dev, "unsupported format code: %08x\n",
+ format->format.code);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(gc0308_frame_sizes); i++) {
+ unsigned int width = gc0308_frame_sizes[i].width;
+ unsigned int height = gc0308_frame_sizes[i].height;
+ unsigned int fit = abs(width - format->format.width) +
+ abs(height - format->format.height);
+ if (fit < best_fit) {
+ best_fit = fit;
+ idx = i;
+
+ if (fit == 0)
+ break;
+ }
+ }
+
+ gc0308->format.width = gc0308_frame_sizes[idx].width;
+ gc0308->format.height = gc0308_frame_sizes[idx].height;
+ gc0308->format.code = gc0308_formats[format_idx].code;
+ gc0308->format.field = V4L2_FIELD_NONE;
+ gc0308->format.colorspace = V4L2_COLORSPACE_SRGB;
+
+ mutex_unlock(&gc0308->lock);
+
+ return 0;
+}
+
+static int gc0308_get_mbus_config(struct v4l2_subdev *sd,
+ unsigned int pad,
+ struct v4l2_mbus_config *cfg)
+{
+ struct gc0308 *gc0308 = to_gc0308(sd);
+
+ mutex_lock(&gc0308->lock);
+ cfg->type = V4L2_MBUS_PARALLEL,
+ cfg->bus.parallel.flags = V4L2_MBUS_PCLK_SAMPLE_RISING |
+ V4L2_MBUS_DATA_ACTIVE_HIGH |
+ V4L2_MBUS_MASTER;
+
+ if (gc0308->mbus_config & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+ cfg->bus.parallel.flags |= V4L2_MBUS_VSYNC_ACTIVE_LOW;
+ else
+ cfg->bus.parallel.flags |= V4L2_MBUS_VSYNC_ACTIVE_HIGH;
+
+ if (gc0308->mbus_config & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+ cfg->bus.parallel.flags |= V4L2_MBUS_HSYNC_ACTIVE_LOW;
+ else
+ cfg->bus.parallel.flags |= V4L2_MBUS_HSYNC_ACTIVE_HIGH;
+
+
+ mutex_unlock(&gc0308->lock);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_pad_ops gc0308_pad_ops = {
+ .enum_mbus_code = gc0308_enum_mbus_code,
+ .enum_frame_size = gc0308_enum_frame_size,
+ .get_fmt = gc0308_get_format,
+ .set_fmt = gc0308_set_format,
+ .get_mbus_config = gc0308_get_mbus_config,
+};
+
+static int gc0308_set_resolution(struct gc0308 *gc0308,
+ u8 subsample, u16 w, u16 h)
+{
+ struct reg_sequence resolution_regs[] = {
+ REG_SEQ0(GC0308_SUBSAMPLE, subsample),
+ REG_SEQ0(GC0308_SUBMODE, 0x03),
+ REG_SEQ0(GC0308_SUB_ROW_N1, 0x00),
+ REG_SEQ0(GC0308_SUB_ROW_N2, 0x00),
+ REG_SEQ0(GC0308_SUB_COL_N1, 0x00),
+ REG_SEQ0(GC0308_SUB_COL_N2, 0x00),
+ REG_SEQ0(GC0308_CROP_WIN_MODE, 0x80),
+ REG_SEQ0(GC0308_CROP_WIN_Y1, 0x00),
+ REG_SEQ0(GC0308_CROP_WIN_X1, 0x00),
+ REG_SEQ0(GC0308_CROP_WIN_HEIGHTH, (h >> 8) & 0xFF),
+ REG_SEQ0(GC0308_CROP_WIN_HEIGHTL, (h >> 0) & 0xFF),
+ REG_SEQ0(GC0308_CROP_WIN_WIDTHH, (w >> 8) & 0xFF),
+ REG_SEQ0(GC0308_CROP_WIN_WIDTHL, (w >> 0) & 0xFF),
+ };
+
+ return regmap_multi_reg_write(gc0308->regmap, resolution_regs,
+ ARRAY_SIZE(resolution_regs));
+}
+
+static int gc0308_start_stream(struct gc0308 *gc0308)
+{
+ int ret, sync_mode;
+ u16 width = 0, height = 0;
+ u8 subsample = 0;
+ int i;
+
+ ret = pm_runtime_resume_and_get(gc0308->dev);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_multi_reg_write(gc0308->regmap, sensor_default_regs,
+ ARRAY_SIZE(sensor_default_regs));
+ if (ret) {
+ dev_err(gc0308->dev, "failed to write default regs\n");
+ goto disable_pm;
+ }
+
+ ret = gc0308_s_format(gc0308);
+ if (ret) {
+ dev_err(gc0308->dev, "failed to set format\n");
+ goto disable_pm;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(gc0308_frame_sizes); i++) {
+ if (gc0308_frame_sizes[i].width == gc0308->format.width &&
+ gc0308_frame_sizes[i].height == gc0308->format.height) {
+ width = gc0308_frame_sizes[i].width;
+ height = gc0308_frame_sizes[i].height;
+ subsample = gc0308_frame_sizes[i].subsample;
+ }
+ }
+
+ if (!width || !height) {
+ dev_err(gc0308->dev, "invalid resolution\n");
+ goto disable_pm;
+ }
+
+ ret = gc0308_set_resolution(gc0308, subsample, width, height);
+ if (ret) {
+ dev_err(gc0308->dev, "failed to write resolution regs\n");
+ goto disable_pm;
+ }
+
+ ret = __v4l2_ctrl_handler_setup(&gc0308->hdl);
+ if (ret) {
+ dev_err(gc0308->dev, "failed to setup controls\n");
+ goto disable_pm;
+ }
+
+ /* HSYNC/VSYNC polarity */
+ sync_mode = 0x3;
+ if (gc0308->mbus_config & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+ sync_mode &= ~BIT(0);
+ if (gc0308->mbus_config & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+ sync_mode &= ~BIT(1);
+ ret = regmap_write(gc0308->regmap, GC0308_SYNC_MODE, sync_mode);
+ if (ret)
+ goto disable_pm;
+
+ return 0;
+
+disable_pm:
+ pm_runtime_put(gc0308->dev);
+ return ret;
+}
+
+static int gc0308_stop_stream(struct gc0308 *gc0308)
+{
+ pm_runtime_put(gc0308->dev);
+ return 0;
+}
+
+static int gc0308_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct gc0308 *gc0308 = to_gc0308(sd);
+ int ret = 0;
+
+ mutex_lock(&gc0308->lock);
+
+ if (gc0308->streaming == enable)
+ goto exit;
+
+ if (enable)
+ ret = gc0308_start_stream(gc0308);
+ else
+ ret = gc0308_stop_stream(gc0308);
+
+ if (!ret)
+ gc0308->streaming = enable;
+
+exit:
+ mutex_unlock(&gc0308->lock);
+ return ret;
+}
+
+static int gc0308_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct gc0308 *gc0308 = to_gc0308(sd);
+
+ mutex_lock(&gc0308->lock);
+ fi->interval = gc0308->frame_interval;
+ mutex_unlock(&gc0308->lock);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops gc0308_video_ops = {
+ .g_frame_interval = gc0308_g_frame_interval,
+ .s_stream = gc0308_s_stream,
+};
+
+static const struct v4l2_subdev_ops gc0308_subdev_ops = {
+ .core = &gc0308_core_ops,
+ .pad = &gc0308_pad_ops,
+ .video = &gc0308_video_ops,
+};
+
+static int gc0308_bus_config(struct gc0308 *gc0308)
+{
+ struct device *dev = gc0308->dev;
+ struct v4l2_fwnode_endpoint bus_cfg = {
+ .bus_type = V4L2_MBUS_PARALLEL
+ };
+ struct fwnode_handle *ep;
+ int ret;
+
+ ep = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+ if (!ep)
+ return -EINVAL;
+
+ ret = v4l2_fwnode_endpoint_parse(ep, &bus_cfg);
+ fwnode_handle_put(ep);
+ if (ret)
+ return ret;
+
+ gc0308->mbus_config = bus_cfg.bus.parallel.flags;
+
+ return 0;
+}
+
+static const char * const gc0308_test_pattern_menu[] = {
+ "Disabled",
+ "Test Image 1",
+ "Test Image 2",
+};
+
+static void gc0308_mutex_destroy(void *data)
+{
+ struct gc0308 *gc0308 = data;
+
+ mutex_destroy(&gc0308->lock);
+}
+
+static int gc0308_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct gc0308 *gc0308;
+ int ret, regval;
+
+ gc0308 = devm_kzalloc(dev, sizeof(*gc0308), GFP_KERNEL);
+ if (!gc0308)
+ return -ENOMEM;
+
+ gc0308->dev = dev;
+ dev_set_drvdata(dev, gc0308);
+
+ ret = gc0308_bus_config(gc0308);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to get bus config\n");
+
+ gc0308->format.width = gc0308_frame_sizes[0].width;
+ gc0308->format.height = gc0308_frame_sizes[0].height;
+ gc0308->format.field = V4L2_FIELD_NONE;
+ gc0308->format.code = gc0308_formats[2].code;
+ gc0308->format.colorspace = V4L2_COLORSPACE_SRGB;
+ gc0308->frame_interval.numerator = 1;
+ gc0308->frame_interval.denominator = GC0308_FRAME_RATE;
+
+ gc0308->clk = devm_clk_get_optional(dev, NULL);
+ if (IS_ERR(gc0308->clk))
+ return dev_err_probe(dev, PTR_ERR(gc0308->clk),
+ "could not get clk\n");
+
+ ret = clk_set_rate(gc0308->clk, 24000000);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to set clock rate\n");
+
+ gc0308->vdd = devm_regulator_get(dev, "vdd28");
+ if (IS_ERR(gc0308->vdd))
+ return dev_err_probe(dev, PTR_ERR(gc0308->vdd),
+ "failed to get vdd28 regulator\n");
+
+ gc0308->pwdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);
+ if (IS_ERR(gc0308->pwdn_gpio))
+ return dev_err_probe(dev, PTR_ERR(gc0308->pwdn_gpio),
+ "failed to get powerdown gpio\n");
+
+ gc0308->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(gc0308->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(gc0308->reset_gpio),
+ "failed to get reset gpio\n");
+
+ gc0308->regmap = devm_regmap_init_i2c(client, &gc0308_regmap_config);
+ if (IS_ERR(gc0308->regmap))
+ return dev_err_probe(dev, PTR_ERR(gc0308->regmap),
+ "failed to init regmap\n");
+
+ mutex_init(&gc0308->lock);
+ ret = devm_add_action_or_reset(dev, gc0308_mutex_destroy, gc0308);
+ if (ret)
+ return ret;
+
+ v4l2_i2c_subdev_init(&gc0308->sd, client, &gc0308_subdev_ops);
+ gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_EVENTS;
+
+ v4l2_ctrl_handler_init(&gc0308->hdl, 8);
+ v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
+ v4l2_ctrl_new_std_menu_items(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(gc0308_test_pattern_menu) - 1,
+ 0, 0, gc0308_test_pattern_menu);
+ v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
+ 8, ~0x14e, V4L2_WHITE_BALANCE_AUTO);
+ v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_COLORFX, 8, 0, V4L2_COLORFX_NONE);
+ v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_POWER_LINE_FREQUENCY,
+ V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
+ ~0x6, V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
+ v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
+ V4L2_CID_EXPOSURE, -4, 4, 1, 0);
+
+ gc0308->hdl.lock = &gc0308->lock;
+ gc0308->sd.ctrl_handler = &gc0308->hdl;
+ if (gc0308->hdl.error) {
+ ret = gc0308->hdl.error;
+ return ret;
+ }
+
+ gc0308->pad.flags = MEDIA_PAD_FL_SOURCE;
+ gc0308->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ret = media_entity_pads_init(&gc0308->sd.entity, 1, &gc0308->pad);
+ if (ret < 0)
+ return ret;
+
+ ret = gc0308_power_on(dev);
+ if (ret)
+ return ret;
+
+ ret = regmap_read(gc0308->regmap, GC0308_CHIP_ID, &regval);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "failed to read chip ID\n");
+
+ if (regval != 0x9b)
+ return dev_err_probe(dev, -EINVAL, "invalid chip ID (%02x)\n",
+ regval);
+
+ ret = v4l2_async_register_subdev(&gc0308->sd);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to register v4l subdev\n");
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_idle(dev);
+
+ return 0;
+}
+
+static void gc0308_remove(struct i2c_client *client)
+{
+ struct gc0308 *gc0308 = i2c_get_clientdata(client);
+ struct device *dev = &client->dev;
+
+ pm_runtime_get_sync(dev);
+
+ v4l2_async_unregister_subdev(&gc0308->sd);
+ v4l2_ctrl_handler_free(&gc0308->hdl);
+
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
+ gc0308_power_off(dev);
+}
+
+static const struct dev_pm_ops gc0308_pm_ops = {
+ SET_RUNTIME_PM_OPS(gc0308_power_off, gc0308_power_on, NULL)
+};
+
+static const struct of_device_id gc0308_of_match[] = {
+ { .compatible = "galaxycore,gc0308" },
+ { .compatible = "galaxycore,gc0309" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, gc0308_of_match);
+
+static struct i2c_driver gc0308_i2c_driver = {
+ .driver = {
+ .name = "gc0308",
+ .pm = &gc0308_pm_ops,
+ .of_match_table = gc0308_of_match,
+ },
+ .probe = gc0308_probe,
+ .remove = gc0308_remove,
+};
+module_i2c_driver(gc0308_i2c_driver);
+
+MODULE_DESCRIPTION("GalaxyCore GC0308 Camera Driver");
+MODULE_AUTHOR("Sebastian Reichel <[email protected]>");
+MODULE_LICENSE("GPL");
--
2.42.0

2023-10-23 06:25:53

by Krzysztof Kozlowski

[permalink] [raw]

Subject: Re: [PATCH v1 2/3] media: dt-bindings: gc0308: add binding

On 23/10/2023 02:22, Sebastian Reichel wrote:
> +required:
> + - compatible
> + - reg
> + - clocks
> + - powerdown-gpios
> + - port
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> +
> + i2c0 {

i2c {

> + #address-cells = <1>;
> + #size-cells = <0>;

With above:

Reviewed-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof

2023-10-23 06:26:16

by Krzysztof Kozlowski

[permalink] [raw]

Subject: Re: [PATCH v1 2/3] media: dt-bindings: gc0308: add binding

On 23/10/2023 02:22, Sebastian Reichel wrote:
> +allOf:
> + - $ref: ../video-interface-devices.yaml#
> +
> +properties:
> + compatible:
> + enum:
> + - galaxycore,gc0308
> + - galaxycore,gc0309

Your driver suggests they are compatible with each other.

Best regards,
Krzysztof

2023-10-23 07:41:10

by Sakari Ailus

[permalink] [raw]

Subject: Re: [PATCH v1 3/3] media: i2c: gc0308: new driver

Hi Sebastian,

Thanks for the patchset.

On Mon, Oct 23, 2023 at 02:22:09AM +0200, Sebastian Reichel wrote:
> Introduce new driver for GalaxyCore GC0308, which is a cheap
> 640x480 with an on-chip ISP sensor sold since 2010. Data is
> provided via parallel bus.
>
> Signed-off-by: Sebastian Reichel <[email protected]>
> ---
> drivers/media/i2c/Kconfig | 14 +
> drivers/media/i2c/Makefile | 1 +
> drivers/media/i2c/gc0308.c | 1451 ++++++++++++++++++++++++++++++++++++
> 3 files changed, 1466 insertions(+)
> create mode 100644 drivers/media/i2c/gc0308.c
>
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 74ff833ff48c..7db4abc0ef88 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -50,6 +50,20 @@ config VIDEO_AR0521
> To compile this driver as a module, choose M here: the
> module will be called ar0521.
>
> +config VIDEO_GC0308
> + tristate "GalaxyCore GC0308 sensor support"
> + depends on I2C && VIDEO_DEV
> + select MEDIA_CONTROLLER
> + select VIDEO_V4L2_SUBDEV_API
> + select V4L2_FWNODE
> + select REGMAP_I2C
> + help
> + This is a Video4Linux2 sensor driver for the GalaxyCore
> + GC0308 camera.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called gc0308.
> +
> config VIDEO_HI556
> tristate "Hynix Hi-556 sensor support"
> help
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index 80b00d39b48f..f03a21f2962a 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -36,6 +36,7 @@ obj-$(CONFIG_VIDEO_DW9719) += dw9719.o
> obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
> obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o
> obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8/
> +obj-$(CONFIG_VIDEO_GC0308) += gc0308.o
> obj-$(CONFIG_VIDEO_HI556) += hi556.o
> obj-$(CONFIG_VIDEO_HI846) += hi846.o
> obj-$(CONFIG_VIDEO_HI847) += hi847.o
> diff --git a/drivers/media/i2c/gc0308.c b/drivers/media/i2c/gc0308.c
> new file mode 100644
> index 000000000000..c92370aed43b
> --- /dev/null
> +++ b/drivers/media/i2c/gc0308.c
> @@ -0,0 +1,1451 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Driver for the GalaxyCore GC0308/GC0309 camera sensor.
> + *
> + * Copyright (c) 2023 Sebastian Reichel <[email protected]>
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/device.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/i2c.h>
> +#include <linux/module.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-subdev.h>
> +
> +/* Analog & CISCTL*/
> +#define GC0308_CHIP_ID 0x000
> +#define GC0308_HBLANK 0x001
> +#define GC0308_VBLANK 0x002
> +#define GC0308_EXPH 0x003
> +#define GC0308_EXPL 0x004
> +#define GC0308_ROW_STARTH 0x005
> +#define GC0308_ROW_STARTL 0x006
> +#define GC0308_COL_STARTH 0x007
> +#define GC0308_COL_STARTL 0x008
> +#define GC0308_WIN_HEIGHTH 0x009
> +#define GC0308_WIN_HEIGHTL 0x00a
> +#define GC0308_WIN_WIDTHH 0x00b
> +#define GC0308_WIN_WIDTHL 0x00c
> +#define GC0308_VS_ST 0x00d
> +#define GC0308_VS_ET 0x00e
> +#define GC0308_VB_HB 0x00f
> +#define GC0308_RSH_WIDTH 0x010
> +#define GC0308_TSP_WIDTH 0x011
> +#define GC0308_SH_DELAY 0x012
> +#define GC0308_ROW_TAIL_WIDTH 0x013
> +#define GC0308_CISCTL_MODE1 0x014
> +#define GC0308_CISCTL_MODE2 0x015
> +#define GC0308_CISCTL_MODE3 0x016
> +#define GC0308_CISCTL_MODE4 0x017
> +#define GC0308_ANALOG_MODE1 0x01a
> +#define GC0308_ANALOG_MODE2 0x01b
> +#define GC0308_HRST_RSG_V18 0x01c
> +#define GC0308_VREF_V25 0x01d
> +#define GC0308_ADC_R 0x01e
> +#define GC0308_PAD_DRV 0x01f
> +#define GC0308_SOFT_RESET 0x0fe
> +
> +/* ISP */
> +#define GC0308_BLOCK_EN1 0x020
> +#define GC0308_BLOCK_EN2 0x021
> +#define GC0308_AAAA_EN 0x022
> +#define GC0308_SPECIAL_EFFECT 0x023
> +#define GC0308_OUT_FORMAT 0x024
> +#define GC0308_OUT_EN 0x025
> +#define GC0308_SYNC_MODE 0x026
> +#define GC0308_CLK_DIV_MODE 0x028
> +#define GC0308_BYPASS_MODE 0x029
> +#define GC0308_CLK_GATING 0x02a
> +#define GC0308_DITHER_MODE 0x02b
> +#define GC0308_DITHER_BIT 0x02c
> +#define GC0308_DEBUG_MODE1 0x02d
> +#define GC0308_DEBUG_MODE2 0x02e
> +#define GC0308_DEBUG_MODE3 0x02f
> +#define GC0308_CROP_WIN_MODE 0x046
> +#define GC0308_CROP_WIN_Y1 0x047
> +#define GC0308_CROP_WIN_X1 0x048
> +#define GC0308_CROP_WIN_HEIGHTH 0x049
> +#define GC0308_CROP_WIN_HEIGHTL 0x04a
> +#define GC0308_CROP_WIN_WIDTHH 0x04b
> +#define GC0308_CROP_WIN_WIDTHL 0x04c
> +
> +/* BLK */
> +#define GC0308_BLK_MODE 0x030
> +#define GC0308_BLK_LIMIT_VAL 0x031
> +#define GC0308_GLOBAL_OFF 0x032
> +#define GC0308_CURRENT_R_OFF 0x033
> +#define GC0308_CURRENT_G_OFF 0x034
> +#define GC0308_CURRENT_B_OFF 0x035
> +#define GC0308_CURRENT_R_DARK_CURRENT 0x036
> +#define GC0308_CURRENT_G_DARK_CURRENT 0x037
> +#define GC0308_CURRENT_B_DARK_CURRENT 0x038
> +#define GC0308_EXP_RATE_DARKC 0x039
> +#define GC0308_OFF_SUBMODE 0x03a
> +#define GC0308_DARKC_SUBMODE 0x03b
> +#define GC0308_MANUAL_G1_OFF 0x03c
> +#define GC0308_MANUAL_R1_OFF 0x03d
> +#define GC0308_MANUAL_B2_OFF 0x03e
> +#define GC0308_MANUAL_G2_OFF 0x03f
> +
> +/* PREGAIN */
> +#define GC0308_GLOBAL_GAIN 0x050
> +#define GC0308_AUTO_PREGAIN 0x051
> +#define GC0308_AUTO_POSTGAIN 0x052
> +#define GC0308_CHANNEL_GAIN_G1 0x053
> +#define GC0308_CHANNEL_GAIN_R 0x054
> +#define GC0308_CHANNEL_GAIN_B 0x055
> +#define GC0308_CHANNEL_GAIN_G2 0x056
> +#define GC0308_R_RATIO 0x057
> +#define GC0308_G_RATIO 0x058
> +#define GC0308_B_RATIO 0x059
> +#define GC0308_AWB_R_GAIN 0x05a
> +#define GC0308_AWB_G_GAIN 0x05b
> +#define GC0308_AWB_B_GAIN 0x05c
> +#define GC0308_LSC_DEC_LVL1 0x05d
> +#define GC0308_LSC_DEC_LVL2 0x05e
> +#define GC0308_LSC_DEC_LVL3 0x05f
> +
> +/* DNDD */
> +#define GC0308_DN_MODE_EN 0x060
> +#define GC0308_DN_MODE_RATIO 0x061
> +#define GC0308_DN_BILAT_B_BASE 0x062
> +#define GC0308_DN_B_INCR 0x063
> +#define GC0308_DN_BILAT_N_BASE 0x064
> +#define GC0308_DN_N_INCR 0x065
> +#define GC0308_DD_DARK_BRIGHT_TH 0x066
> +#define GC0308_DD_FLAT_TH 0x067
> +#define GC0308_DD_LIMIT 0x068
> +
> +/* ASDE - Auto Saturation De-noise and Edge-Enhancement */
> +#define GC0308_ASDE_GAIN_TRESH 0x069
> +#define GC0308_ASDE_GAIN_MODE 0x06a
> +#define GC0308_ASDE_DN_SLOPE 0x06b
> +#define GC0308_ASDE_DD_BRIGHT 0x06c
> +#define GC0308_ASDE_DD_LIMIT 0x06d
> +#define GC0308_ASDE_AUTO_EE1 0x06e
> +#define GC0308_ASDE_AUTO_EE2 0x06f
> +#define GC0308_ASDE_AUTO_SAT_DEC_SLOPE 0x070
> +#define GC0308_ASDE_AUTO_SAT_LOW_LIMIT 0x071
> +
> +/* INTPEE - Interpolation and Edge-Enhancement */
> +#define GC0308_EEINTP_MODE_1 0x072
> +#define GC0308_EEINTP_MODE_2 0x073
> +#define GC0308_DIRECTION_TH1 0x074
> +#define GC0308_DIRECTION_TH2 0x075
> +#define GC0308_DIFF_HV_TI_TH 0x076
> +#define GC0308_EDGE12_EFFECT 0x077
> +#define GC0308_EDGE_POS_RATIO 0x078
> +#define GC0308_EDGE1_MINMAX 0x079
> +#define GC0308_EDGE2_MINMAX 0x07a
> +#define GC0308_EDGE12_TH 0x07b
> +#define GC0308_EDGE_MAX 0x07c
> +
> +/* ABB - Auto Black Balance */
> +#define GC0308_ABB_MODE 0x080
> +#define GC0308_ABB_TARGET_AVGH 0x081
> +#define GC0308_ABB_TARGET_AVGL 0x082
> +#define GC0308_ABB_LIMIT_VAL 0x083
> +#define GC0308_ABB_SPEED 0x084
> +#define GC0308_CURR_R_BLACK_LVL 0x085
> +#define GC0308_CURR_G_BLACK_LVL 0x086
> +#define GC0308_CURR_B_BLACK_LVL 0x087
> +#define GC0308_CURR_R_BLACK_FACTOR 0x088
> +#define GC0308_CURR_G_BLACK_FACTOR 0x089
> +#define GC0308_CURR_B_BLACK_FACTOR 0x08a
> +
> +/* LSC - Lens Shading Correction */
> +#define GC0308_LSC_RED_B2 0x08b
> +#define GC0308_LSC_GREEN_B2 0x08c
> +#define GC0308_LSC_BLUE_B2 0x08d
> +#define GC0308_LSC_RED_B4 0x08e
> +#define GC0308_LSC_GREEN_B4 0x08f
> +#define GC0308_LSC_BLUE_B4 0x090
> +#define GC0308_LSC_ROW_CENTER 0x091
> +#define GC0308_LSC_COL_CENTER 0x092
> +
> +/* CC - Channel Coefficient */
> +#define GC0308_CC_MATRIX_C11 0x093
> +#define GC0308_CC_MATRIX_C12 0x094
> +#define GC0308_CC_MATRIX_C13 0x095
> +#define GC0308_CC_MATRIX_C21 0x096
> +#define GC0308_CC_MATRIX_C22 0x097
> +#define GC0308_CC_MATRIX_C23 0x098
> +#define GC0308_CC_MATRIX_C41 0x09c
> +#define GC0308_CC_MATRIX_C42 0x09d
> +#define GC0308_CC_MATRIX_C43 0x09e
> +
> +/* GAMMA */
> +#define GC0308_GAMMA_OUT0 0x09f
> +#define GC0308_GAMMA_OUT1 0x0a0
> +#define GC0308_GAMMA_OUT2 0x0a1
> +#define GC0308_GAMMA_OUT3 0x0a2
> +#define GC0308_GAMMA_OUT4 0x0a3
> +#define GC0308_GAMMA_OUT5 0x0a4
> +#define GC0308_GAMMA_OUT6 0x0a5
> +#define GC0308_GAMMA_OUT7 0x0a6
> +#define GC0308_GAMMA_OUT8 0x0a7
> +#define GC0308_GAMMA_OUT9 0x0a8
> +#define GC0308_GAMMA_OUT10 0x0a9
> +#define GC0308_GAMMA_OUT11 0x0aa
> +#define GC0308_GAMMA_OUT12 0x0ab
> +#define GC0308_GAMMA_OUT13 0x0ac
> +#define GC0308_GAMMA_OUT14 0x0ad
> +#define GC0308_GAMMA_OUT15 0x0ae
> +#define GC0308_GAMMA_OUT16 0x0af
> +
> +/* YCP */
> +#define GC0308_GLOBAL_SATURATION 0x0b0
> +#define GC0308_SATURATION_CB 0x0b1
> +#define GC0308_SATURATION_CR 0x0b2
> +#define GC0308_LUMA_CONTRAST 0x0b3
> +#define GC0308_CONTRAST_CENTER 0x0b4
> +#define GC0308_LUMA_OFFSET 0x0b5
> +#define GC0308_SKIN_CB_CENTER 0x0b6
> +#define GC0308_SKIN_CR_CENTER 0x0b7
> +#define GC0308_SKIN_RADIUS_SQUARE 0x0b8
> +#define GC0308_SKIN_BRIGHTNESS 0x0b9
> +#define GC0308_FIXED_CB 0x0ba
> +#define GC0308_FIXED_CR 0x0bb
> +#define GC0308_EDGE_DEC_SA 0x0bd
> +#define GC0308_AUTO_GRAY_MODE 0x0be
> +#define GC0308_SATURATION_SUB_STRENGTH 0x0bf
> +#define GC0308_Y_GAMMA_OUT0 0x0c0
> +#define GC0308_Y_GAMMA_OUT1 0x0c1
> +#define GC0308_Y_GAMMA_OUT2 0x0c2
> +#define GC0308_Y_GAMMA_OUT3 0x0c3
> +#define GC0308_Y_GAMMA_OUT4 0x0c4
> +#define GC0308_Y_GAMMA_OUT5 0x0c5
> +#define GC0308_Y_GAMMA_OUT6 0x0c6
> +#define GC0308_Y_GAMMA_OUT7 0x0c7
> +#define GC0308_Y_GAMMA_OUT8 0x0c8
> +#define GC0308_Y_GAMMA_OUT9 0x0c9
> +#define GC0308_Y_GAMMA_OUT10 0x0ca
> +#define GC0308_Y_GAMMA_OUT11 0x0cb
> +#define GC0308_Y_GAMMA_OUT12 0x0cc
> +
> +/* AEC - Automatic Exposure Control */
> +#define GC0308_AEC_MODE1 0x0d0
> +#define GC0308_AEC_MODE2 0x0d1
> +#define GC0308_AEC_MODE3 0x0d2
> +#define GC0308_AEC_TARGET_Y 0x0d3
> +#define GC0308_Y_AVG 0x0d4
> +#define GC0308_AEC_HIGH_LOW_RANGE 0x0d5
> +#define GC0308_AEC_IGNORE 0x0d6
> +#define GC0308_AEC_LIMIT_HIGH_RANGE 0x0d7
> +#define GC0308_AEC_R_OFFSET 0x0d9
> +#define GC0308_AEC_GB_OFFSET 0x0da
> +#define GC0308_AEC_SLOW_MARGIN 0x0db
> +#define GC0308_AEC_FAST_MARGIN 0x0dc
> +#define GC0308_AEC_EXP_CHANGE_GAIN 0x0dd
> +#define GC0308_AEC_STEP2_SUNLIGHT 0x0de
> +#define GC0308_AEC_I_FRAMES 0x0df
> +#define GC0308_AEC_I_STOP_L_MARGIN 0x0e0
> +#define GC0308_AEC_I_STOP_MARGIN 0x0e1
> +#define GC0308_ANTI_FLICKER_STEP_H 0x0e2
> +#define GC0308_ANTI_FLICKER_STEP_L 0x0e3
> +#define GC0308_EXP_LVL_1H 0x0e4
> +#define GC0308_EXP_LVL_1L 0x0e5
> +#define GC0308_EXP_LVL_2H 0x0e6
> +#define GC0308_EXP_LVL_2L 0x0e7
> +#define GC0308_EXP_LVL_3H 0x0e8
> +#define GC0308_EXP_LVL_3L 0x0e9
> +#define GC0308_EXP_LVL_4H 0x0ea
> +#define GC0308_EXP_LVL_4L 0x0eb
> +#define GC0308_MAX_EXP_LVL 0x0ec
> +#define GC0308_EXP_MIN_L 0x0ed
> +#define GC0308_MAX_POST_DF_GAIN 0x0ee
> +#define GC0308_MAX_PRE_DG_GAIN 0x0ef
> +
> +/* ABS */
> +#define GC0308_ABS_RANGE_COMP 0x0f0
> +#define GC0308_ABS_STOP_MARGIN 0x0f1
> +#define GC0308_Y_S_COMP 0x0f2
> +#define GC0308_Y_STRETCH_LIMIT 0x0f3
> +#define GC0308_Y_TILT 0x0f4
> +#define GC0308_Y_STRETCH 0x0f5
> +
> +/* Measure Window */
> +#define GC0308_BIG_WIN_X0 0x0f7
> +#define GC0308_BIG_WIN_Y0 0x0f8
> +#define GC0308_BIG_WIN_X1 0x0f9
> +#define GC0308_BIG_WIN_Y1 0x0fa
> +#define GC0308_DIFF_Y_BIG_THD 0x0fb
> +
> +/* OUT Module (P1) */
> +#define GC0308_CLOSE_FRAME_EN 0x150
> +#define GC0308_CLOSE_FRAME_NUM1 0x151
> +#define GC0308_CLOSE_FRAME_NUM2 0x152
> +#define GC0308_BAYER_MODE 0x153
> +#define GC0308_SUBSAMPLE 0x154
> +#define GC0308_SUBMODE 0x155
> +#define GC0308_SUB_ROW_N1 0x156
> +#define GC0308_SUB_ROW_N2 0x157
> +#define GC0308_SUB_COL_N1 0x158
> +#define GC0308_SUB_COL_N2 0x159
> +
> +/* AWB (P1) - Auto White Balance */
> +#define GC0308_AWB_RGB_HIGH_LOW 0x100
> +#define GC0308_AWB_Y_TO_C_DIFF2 0x102
> +#define GC0308_AWB_C_MAX 0x104
> +#define GC0308_AWB_C_INTER 0x105
> +#define GC0308_AWB_C_INTER2 0x106
> +#define GC0308_AWB_C_MAX_BIG 0x108
> +#define GC0308_AWB_Y_HIGH 0x109
> +#define GC0308_AWB_NUMBER_LIMIT 0x10a
> +#define GC0308_KWIN_RATIO 0x10b
> +#define GC0308_KWIN_THD 0x10c
> +#define GC0308_LIGHT_GAIN_RANGE 0x10d
> +#define GC0308_SMALL_WIN_WIDTH_STEP 0x10e
> +#define GC0308_SMALL_WIN_HEIGHT_STEP 0x10f
> +#define GC0308_AWB_YELLOW_TH 0x110
> +#define GC0308_AWB_MODE 0x111
> +#define GC0308_AWB_ADJUST_SPEED 0x112
> +#define GC0308_AWB_EVERY_N 0x113
> +#define GC0308_R_AVG_USE 0x1d0
> +#define GC0308_G_AVG_USE 0x1d1
> +#define GC0308_B_AVG_USE 0x1d2
> +
> +#define GC0308_FRAME_RATE 29
> +
> +enum gc0308_exp_val {
> + GC0308_EXP_M4 = 0,
> + GC0308_EXP_M3,
> + GC0308_EXP_M2,
> + GC0308_EXP_M1,
> + GC0308_EXP_0,
> + GC0308_EXP_P1,
> + GC0308_EXP_P2,
> + GC0308_EXP_P3,
> + GC0308_EXP_P4,
> +};
> +
> +struct gc0308_exposure {
> + u8 luma_offset;
> + u8 aec_target_y;
> +};
> +
> +#define GC0308_EXPOSURE(luma_offset_reg, aec_target_y_reg) \
> + { .luma_offset = luma_offset_reg, .aec_target_y = aec_target_y_reg }
> +
> +static const struct gc0308_exposure gc0308_exposure_values[] = {
> + [GC0308_EXP_M4] = GC0308_EXPOSURE(0xc0, 0x30),
> + [GC0308_EXP_M3] = GC0308_EXPOSURE(0xd0, 0x38),
> + [GC0308_EXP_M2] = GC0308_EXPOSURE(0xe0, 0x40),
> + [GC0308_EXP_M1] = GC0308_EXPOSURE(0xf0, 0x48),
> + [GC0308_EXP_0] = GC0308_EXPOSURE(0x08, 0x50),
> + [GC0308_EXP_P1] = GC0308_EXPOSURE(0x10, 0x5c),
> + [GC0308_EXP_P2] = GC0308_EXPOSURE(0x20, 0x60),
> + [GC0308_EXP_P3] = GC0308_EXPOSURE(0x30, 0x68),
> + [GC0308_EXP_P4] = GC0308_EXPOSURE(0x40, 0x70),
> +};
> +
> +struct gc0308_awb_gains {
> + u8 r;
> + u8 g;
> + u8 b;
> +};
> +
> +#define GC0308_AWB_GAINS(red, green, blue) \
> + { .r = red, .g = green, .b = blue }
> +
> +static const struct gc0308_awb_gains gc0308_awb_gains[] = {
> + [V4L2_WHITE_BALANCE_AUTO] = GC0308_AWB_GAINS(0x56, 0x40, 0x4a),
> + [V4L2_WHITE_BALANCE_CLOUDY] = GC0308_AWB_GAINS(0x8c, 0x50, 0x40),
> + [V4L2_WHITE_BALANCE_DAYLIGHT] = GC0308_AWB_GAINS(0x74, 0x52, 0x40),
> + [V4L2_WHITE_BALANCE_INCANDESCENT] = GC0308_AWB_GAINS(0x48, 0x40, 0x5c),
> + [V4L2_WHITE_BALANCE_FLUORESCENT] = GC0308_AWB_GAINS(0x40, 0x42, 0x50),
> +};
> +
> +struct gc0308_format {
> + u32 code;
> + u8 regval;
> +};
> +
> +#define GC0308_FORMAT(v4l2_code, gc0308_regval) \
> + { .code = v4l2_code, .regval = gc0308_regval }
> +
> +static const struct gc0308_format gc0308_formats[] = {
> + GC0308_FORMAT(MEDIA_BUS_FMT_UYVY8_2X8, 0x00),
> + GC0308_FORMAT(MEDIA_BUS_FMT_VYUY8_2X8, 0x01),
> + GC0308_FORMAT(MEDIA_BUS_FMT_YUYV8_2X8, 0x02),
> + GC0308_FORMAT(MEDIA_BUS_FMT_YVYU8_2X8, 0x03),
> + GC0308_FORMAT(MEDIA_BUS_FMT_RGB565_2X8_BE, 0x06),
> + GC0308_FORMAT(MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, 0x07),
> + GC0308_FORMAT(MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE, 0x09),
> +};
> +
> +struct gc0308_frame_size {
> + u8 subsample;
> + u16 width;
> + u16 height;
> +};
> +
> +#define GC0308_FRAME_SIZE(s, w, h) \
> + { .subsample = s, .width = w, .height = h }
> +
> +static const struct gc0308_frame_size gc0308_frame_sizes[] = {
> + GC0308_FRAME_SIZE(0x11, 640, 480),
> + GC0308_FRAME_SIZE(0x22, 320, 240),
> + GC0308_FRAME_SIZE(0x44, 160, 120),
> +};
> +
> +struct gc0308 {
> + struct v4l2_subdev sd;
> + struct v4l2_ctrl_handler hdl;
> + struct media_pad pad;
> + struct v4l2_mbus_framefmt format;
> + struct device *dev;
> + struct clk *clk;
> + struct regmap *regmap;
> + struct regulator *vdd;
> + struct gpio_desc *pwdn_gpio;
> + struct gpio_desc *reset_gpio;
> + struct mutex lock; /* mutex lock for operations */
> + bool streaming;
> + unsigned int mbus_config;
> + struct v4l2_fract frame_interval;
> +};
> +
> +static inline struct gc0308 *to_gc0308(struct v4l2_subdev *sd)
> +{
> + return container_of(sd, struct gc0308, sd);
> +}
> +
> +static const struct regmap_range_cfg gc0308_ranges[] = {
> + {
> + .range_min = 0x0000,
> + .range_max = 0x01ff,
> + .selector_reg = 0xfe,
> + .selector_mask = 0x01,
> + .selector_shift = 0x00,
> + .window_start = 0x00,
> + .window_len = 0x100,
> + },
> +};
> +
> +static const struct regmap_config gc0308_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = 0x1ff,
> + .ranges = gc0308_ranges,
> + .num_ranges = ARRAY_SIZE(gc0308_ranges),
> + .cache_type = REGCACHE_RBTREE,
> +};
> +
> +static const struct reg_sequence sensor_default_regs[] = {
> + REG_SEQ0(GC0308_VB_HB, 0x00),
> + REG_SEQ0(GC0308_HBLANK, 0x40),
> + REG_SEQ0(GC0308_VBLANK, 0x20),
> + REG_SEQ0(GC0308_EXPH, 0x02),
> + REG_SEQ0(GC0308_EXPL, 0x58),
> + REG_SEQ0(GC0308_AWB_R_GAIN, 0x56),
> + REG_SEQ0(GC0308_AWB_G_GAIN, 0x40),
> + REG_SEQ0(GC0308_AWB_B_GAIN, 0x4a),
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_H, 0x00),
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x78),
> + REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_2H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_2L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_3H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_3L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_4H, 0x0e),
> + REG_SEQ0(GC0308_EXP_LVL_4L, 0xa6),
> + REG_SEQ0(GC0308_MAX_EXP_LVL, 0x20),
> + REG_SEQ0(GC0308_ROW_STARTH, 0x00),
> + REG_SEQ0(GC0308_ROW_STARTL, 0x00),
> + REG_SEQ0(GC0308_COL_STARTH, 0x00),
> + REG_SEQ0(GC0308_COL_STARTL, 0x00),
> + REG_SEQ0(GC0308_WIN_HEIGHTH, 0x01), /* 0x1e8 = 488 => VT=480 */
> + REG_SEQ0(GC0308_WIN_HEIGHTL, 0xe8),
> + REG_SEQ0(GC0308_WIN_WIDTHH, 0x02), /* 0x288 = 648 => VH=640 */
> + REG_SEQ0(GC0308_WIN_WIDTHL, 0x88),
> + REG_SEQ0(GC0308_VS_ST, 0x02), /* Start Time (in rows) */
> + REG_SEQ0(GC0308_VS_ET, 0x02), /* End Time (in rows) */
> + REG_SEQ0(GC0308_RSH_WIDTH, 0x22),
> + REG_SEQ0(GC0308_TSP_WIDTH, 0x0d),
> + REG_SEQ0(GC0308_SH_DELAY, 0x50), /* sample hold delay post row finish */
> + REG_SEQ0(GC0308_ROW_TAIL_WIDTH, 0x0f),
> + REG_SEQ0(GC0308_CISCTL_MODE1, 0x10),
> + REG_SEQ0(GC0308_CISCTL_MODE2, 0x0a),
> + REG_SEQ0(GC0308_CISCTL_MODE3, 0x05),
> + REG_SEQ0(GC0308_CISCTL_MODE4, 0x01),
> + REG_SEQ0(0x018, 0x44), /* undocumented */
> + REG_SEQ0(0x019, 0x44), /* undocumented */
> + REG_SEQ0(GC0308_ANALOG_MODE1, 0x2a),
> + REG_SEQ0(GC0308_ANALOG_MODE2, 0x00),
> + REG_SEQ0(GC0308_HRST_RSG_V18, 0x49),
> + REG_SEQ0(GC0308_VREF_V25, 0x9a),
> + REG_SEQ0(GC0308_ADC_R, 0x61),
> + REG_SEQ0(GC0308_PAD_DRV, 0x01), /* drv strength: pclk=4mA */
> + REG_SEQ0(GC0308_BLOCK_EN1, 0x7f),
> + REG_SEQ0(GC0308_BLOCK_EN2, 0xfa),
> + REG_SEQ0(GC0308_AAAA_EN, 0x57),
> + REG_SEQ0(GC0308_OUT_FORMAT, 0xa2), /* YCbYCr */
> + REG_SEQ0(GC0308_OUT_EN, 0x0f),
> + REG_SEQ0(GC0308_SYNC_MODE, 0x03),
> + REG_SEQ0(GC0308_CLK_DIV_MODE, 0x00),
> + REG_SEQ0(GC0308_DEBUG_MODE1, 0x0a),
> + REG_SEQ0(GC0308_DEBUG_MODE2, 0x00),
> + REG_SEQ0(GC0308_DEBUG_MODE3, 0x01),
> + REG_SEQ0(GC0308_BLK_MODE, 0xf7),
> + REG_SEQ0(GC0308_BLK_LIMIT_VAL, 0x50),
> + REG_SEQ0(GC0308_GLOBAL_OFF, 0x00),
> + REG_SEQ0(GC0308_CURRENT_R_OFF, 0x28),
> + REG_SEQ0(GC0308_CURRENT_G_OFF, 0x2a),
> + REG_SEQ0(GC0308_CURRENT_B_OFF, 0x28),
> + REG_SEQ0(GC0308_EXP_RATE_DARKC, 0x04),
> + REG_SEQ0(GC0308_OFF_SUBMODE, 0x20),
> + REG_SEQ0(GC0308_DARKC_SUBMODE, 0x20),
> + REG_SEQ0(GC0308_MANUAL_G1_OFF, 0x00),
> + REG_SEQ0(GC0308_MANUAL_R1_OFF, 0x00),
> + REG_SEQ0(GC0308_MANUAL_B2_OFF, 0x00),
> + REG_SEQ0(GC0308_MANUAL_G2_OFF, 0x00),
> + REG_SEQ0(GC0308_GLOBAL_GAIN, 0x14),
> + REG_SEQ0(GC0308_AUTO_POSTGAIN, 0x41),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_G1, 0x80),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_R, 0x80),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_B, 0x80),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_G2, 0x80),
> + REG_SEQ0(GC0308_LSC_RED_B2, 0x20),
> + REG_SEQ0(GC0308_LSC_GREEN_B2, 0x20),
> + REG_SEQ0(GC0308_LSC_BLUE_B2, 0x20),
> + REG_SEQ0(GC0308_LSC_RED_B4, 0x14),
> + REG_SEQ0(GC0308_LSC_GREEN_B4, 0x10),
> + REG_SEQ0(GC0308_LSC_BLUE_B4, 0x14),
> + REG_SEQ0(GC0308_LSC_ROW_CENTER, 0x3c),
> + REG_SEQ0(GC0308_LSC_COL_CENTER, 0x50),
> + REG_SEQ0(GC0308_LSC_DEC_LVL1, 0x12),
> + REG_SEQ0(GC0308_LSC_DEC_LVL2, 0x1a),
> + REG_SEQ0(GC0308_LSC_DEC_LVL3, 0x24),
> + REG_SEQ0(GC0308_DN_MODE_EN, 0x07),
> + REG_SEQ0(GC0308_DN_MODE_RATIO, 0x15),
> + REG_SEQ0(GC0308_DN_BILAT_B_BASE, 0x08),
> + REG_SEQ0(GC0308_DN_BILAT_N_BASE, 0x03),
> + REG_SEQ0(GC0308_DD_DARK_BRIGHT_TH, 0xe8),
> + REG_SEQ0(GC0308_DD_FLAT_TH, 0x86),
> + REG_SEQ0(GC0308_DD_LIMIT, 0x82),
> + REG_SEQ0(GC0308_ASDE_GAIN_TRESH, 0x18),
> + REG_SEQ0(GC0308_ASDE_GAIN_MODE, 0x0f),
> + REG_SEQ0(GC0308_ASDE_DN_SLOPE, 0x00),
> + REG_SEQ0(GC0308_ASDE_DD_BRIGHT, 0x5f),
> + REG_SEQ0(GC0308_ASDE_DD_LIMIT, 0x8f),
> + REG_SEQ0(GC0308_ASDE_AUTO_EE1, 0x55),
> + REG_SEQ0(GC0308_ASDE_AUTO_EE2, 0x38),
> + REG_SEQ0(GC0308_ASDE_AUTO_SAT_DEC_SLOPE, 0x15),
> + REG_SEQ0(GC0308_ASDE_AUTO_SAT_LOW_LIMIT, 0x33),
> + REG_SEQ0(GC0308_EEINTP_MODE_1, 0xdc),
> + REG_SEQ0(GC0308_EEINTP_MODE_2, 0x00),
> + REG_SEQ0(GC0308_DIRECTION_TH1, 0x02),
> + REG_SEQ0(GC0308_DIRECTION_TH2, 0x3f),
> + REG_SEQ0(GC0308_DIFF_HV_TI_TH, 0x02),
> + REG_SEQ0(GC0308_EDGE12_EFFECT, 0x38),
> + REG_SEQ0(GC0308_EDGE_POS_RATIO, 0x88),
> + REG_SEQ0(GC0308_EDGE1_MINMAX, 0x81),
> + REG_SEQ0(GC0308_EDGE2_MINMAX, 0x81),
> + REG_SEQ0(GC0308_EDGE12_TH, 0x22),
> + REG_SEQ0(GC0308_EDGE_MAX, 0xff),
> + REG_SEQ0(GC0308_CC_MATRIX_C11, 0x48),
> + REG_SEQ0(GC0308_CC_MATRIX_C12, 0x02),
> + REG_SEQ0(GC0308_CC_MATRIX_C13, 0x07),
> + REG_SEQ0(GC0308_CC_MATRIX_C21, 0xe0),
> + REG_SEQ0(GC0308_CC_MATRIX_C22, 0x40),
> + REG_SEQ0(GC0308_CC_MATRIX_C23, 0xf0),
> + REG_SEQ0(GC0308_SATURATION_CB, 0x40),
> + REG_SEQ0(GC0308_SATURATION_CR, 0x40),
> + REG_SEQ0(GC0308_LUMA_CONTRAST, 0x40),
> + REG_SEQ0(GC0308_SKIN_CB_CENTER, 0xe0),
> + REG_SEQ0(GC0308_EDGE_DEC_SA, 0x38),
> + REG_SEQ0(GC0308_AUTO_GRAY_MODE, 0x36),
> + REG_SEQ0(GC0308_AEC_MODE1, 0xcb),
> + REG_SEQ0(GC0308_AEC_MODE2, 0x10),
> + REG_SEQ0(GC0308_AEC_MODE3, 0x90),
> + REG_SEQ0(GC0308_AEC_TARGET_Y, 0x48),
> + REG_SEQ0(GC0308_AEC_HIGH_LOW_RANGE, 0xf2),
> + REG_SEQ0(GC0308_AEC_IGNORE, 0x16),
> + REG_SEQ0(GC0308_AEC_SLOW_MARGIN, 0x92),
> + REG_SEQ0(GC0308_AEC_FAST_MARGIN, 0xa5),
> + REG_SEQ0(GC0308_AEC_I_FRAMES, 0x23),
> + REG_SEQ0(GC0308_AEC_R_OFFSET, 0x00),
> + REG_SEQ0(GC0308_AEC_GB_OFFSET, 0x00),
> + REG_SEQ0(GC0308_AEC_I_STOP_L_MARGIN, 0x09),
> + REG_SEQ0(GC0308_EXP_MIN_L, 0x04),
> + REG_SEQ0(GC0308_MAX_POST_DF_GAIN, 0xa0),
> + REG_SEQ0(GC0308_MAX_PRE_DG_GAIN, 0x40),
> + REG_SEQ0(GC0308_ABB_MODE, 0x03),
> + REG_SEQ0(GC0308_GAMMA_OUT0, 0x10),
> + REG_SEQ0(GC0308_GAMMA_OUT1, 0x20),
> + REG_SEQ0(GC0308_GAMMA_OUT2, 0x38),
> + REG_SEQ0(GC0308_GAMMA_OUT3, 0x4e),
> + REG_SEQ0(GC0308_GAMMA_OUT4, 0x63),
> + REG_SEQ0(GC0308_GAMMA_OUT5, 0x76),
> + REG_SEQ0(GC0308_GAMMA_OUT6, 0x87),
> + REG_SEQ0(GC0308_GAMMA_OUT7, 0xa2),
> + REG_SEQ0(GC0308_GAMMA_OUT8, 0xb8),
> + REG_SEQ0(GC0308_GAMMA_OUT9, 0xca),
> + REG_SEQ0(GC0308_GAMMA_OUT10, 0xd8),
> + REG_SEQ0(GC0308_GAMMA_OUT11, 0xe3),
> + REG_SEQ0(GC0308_GAMMA_OUT12, 0xeb),
> + REG_SEQ0(GC0308_GAMMA_OUT13, 0xf0),
> + REG_SEQ0(GC0308_GAMMA_OUT14, 0xf8),
> + REG_SEQ0(GC0308_GAMMA_OUT15, 0xfd),
> + REG_SEQ0(GC0308_GAMMA_OUT16, 0xff),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT0, 0x00),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT1, 0x10),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT2, 0x1c),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT3, 0x30),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT4, 0x43),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT5, 0x54),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT6, 0x65),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT7, 0x75),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT8, 0x93),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT9, 0xb0),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT10, 0xcb),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT11, 0xe6),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT12, 0xff),
> + REG_SEQ0(GC0308_ABS_RANGE_COMP, 0x02),
> + REG_SEQ0(GC0308_ABS_STOP_MARGIN, 0x01),
> + REG_SEQ0(GC0308_Y_S_COMP, 0x02),
> + REG_SEQ0(GC0308_Y_STRETCH_LIMIT, 0x30),
> + REG_SEQ0(GC0308_BIG_WIN_X0, 0x12),
> + REG_SEQ0(GC0308_BIG_WIN_Y0, 0x0a),
> + REG_SEQ0(GC0308_BIG_WIN_X1, 0x9f),
> + REG_SEQ0(GC0308_BIG_WIN_Y1, 0x78),
> + REG_SEQ0(GC0308_AWB_RGB_HIGH_LOW, 0xf5),
> + REG_SEQ0(GC0308_AWB_Y_TO_C_DIFF2, 0x20),
> + REG_SEQ0(GC0308_AWB_C_MAX, 0x10),
> + REG_SEQ0(GC0308_AWB_C_INTER, 0x08),
> + REG_SEQ0(GC0308_AWB_C_INTER2, 0x20),
> + REG_SEQ0(GC0308_AWB_C_MAX_BIG, 0x0a),
> + REG_SEQ0(GC0308_AWB_NUMBER_LIMIT, 0xa0),
> + REG_SEQ0(GC0308_KWIN_RATIO, 0x60),
> + REG_SEQ0(GC0308_KWIN_THD, 0x08),
> + REG_SEQ0(GC0308_SMALL_WIN_WIDTH_STEP, 0x44),
> + REG_SEQ0(GC0308_SMALL_WIN_HEIGHT_STEP, 0x32),
> + REG_SEQ0(GC0308_AWB_YELLOW_TH, 0x41),
> + REG_SEQ0(GC0308_AWB_MODE, 0x37),
> + REG_SEQ0(GC0308_AWB_ADJUST_SPEED, 0x22),
> + REG_SEQ0(GC0308_AWB_EVERY_N, 0x19),
> + REG_SEQ0(0x114, 0x44), /* AWB set1 */
> + REG_SEQ0(0x115, 0x44), /* AWB set1 */
> + REG_SEQ0(0x116, 0xc2), /* AWB set1 */
> + REG_SEQ0(0x117, 0xa8), /* AWB set1 */
> + REG_SEQ0(0x118, 0x18), /* AWB set1 */
> + REG_SEQ0(0x119, 0x50), /* AWB set1 */
> + REG_SEQ0(0x11a, 0xd8), /* AWB set1 */
> + REG_SEQ0(0x11b, 0xf5), /* AWB set1 */
> + REG_SEQ0(0x170, 0x40), /* AWB set2 */
> + REG_SEQ0(0x171, 0x58), /* AWB set2 */
> + REG_SEQ0(0x172, 0x30), /* AWB set2 */
> + REG_SEQ0(0x173, 0x48), /* AWB set2 */
> + REG_SEQ0(0x174, 0x20), /* AWB set2 */
> + REG_SEQ0(0x175, 0x60), /* AWB set2 */
> + REG_SEQ0(0x177, 0x20), /* AWB set2 */
> + REG_SEQ0(0x178, 0x32), /* AWB set2 */
> + REG_SEQ0(0x130, 0x03), /* undocumented */
> + REG_SEQ0(0x131, 0x40), /* undocumented */
> + REG_SEQ0(0x132, 0x10), /* undocumented */
> + REG_SEQ0(0x133, 0xe0), /* undocumented */
> + REG_SEQ0(0x134, 0xe0), /* undocumented */
> + REG_SEQ0(0x135, 0x00), /* undocumented */
> + REG_SEQ0(0x136, 0x80), /* undocumented */
> + REG_SEQ0(0x137, 0x00), /* undocumented */
> + REG_SEQ0(0x138, 0x04), /* undocumented */
> + REG_SEQ0(0x139, 0x09), /* undocumented */
> + REG_SEQ0(0x13a, 0x12), /* undocumented */
> + REG_SEQ0(0x13b, 0x1c), /* undocumented */
> + REG_SEQ0(0x13c, 0x28), /* undocumented */
> + REG_SEQ0(0x13d, 0x31), /* undocumented */
> + REG_SEQ0(0x13e, 0x44), /* undocumented */
> + REG_SEQ0(0x13f, 0x57), /* undocumented */
> + REG_SEQ0(0x140, 0x6c), /* undocumented */
> + REG_SEQ0(0x141, 0x81), /* undocumented */
> + REG_SEQ0(0x142, 0x94), /* undocumented */
> + REG_SEQ0(0x143, 0xa7), /* undocumented */
> + REG_SEQ0(0x144, 0xb8), /* undocumented */
> + REG_SEQ0(0x145, 0xd6), /* undocumented */
> + REG_SEQ0(0x146, 0xee), /* undocumented */
> + REG_SEQ0(0x147, 0x0d), /* undocumented */
> + REG_SEQ0(0x162, 0xf7), /* undocumented */
> + REG_SEQ0(0x163, 0x68), /* undocumented */
> + REG_SEQ0(0x164, 0xd3), /* undocumented */
> + REG_SEQ0(0x165, 0xd3), /* undocumented */
> + REG_SEQ0(0x166, 0x60), /* undocumented */
> +};
> +
> +struct gc0308_colormode {
> + u8 special_effect;
> + u8 dbg_mode1;
> + u8 block_en1;
> + u8 aec_mode3;
> + u8 eeintp_mode_2;
> + u8 edge12_effect;
> + u8 luma_contrast;
> + u8 contrast_center;
> + u8 fixed_cb;
> + u8 fixed_cr;
> +};
> +
> +#define GC0308_COLOR_FX(reg_special_effect, reg_dbg_mode1, reg_block_en1, \
> + reg_aec_mode3, reg_eeintp_mode_2, reg_edge12_effect, \
> + reg_luma_contrast, reg_contrast_center, \
> + reg_fixed_cb, reg_fixed_cr) \
> + { \
> + .special_effect = reg_special_effect, \
> + .dbg_mode1 = reg_dbg_mode1, \
> + .block_en1 = reg_block_en1, \
> + .aec_mode3 = reg_aec_mode3, \
> + .eeintp_mode_2 = reg_eeintp_mode_2, \
> + .edge12_effect = reg_edge12_effect, \
> + .luma_contrast = reg_luma_contrast, \
> + .contrast_center = reg_contrast_center, \
> + .fixed_cb = reg_fixed_cb, \
> + .fixed_cr = reg_fixed_cr, \
> + }
> +
> +static const struct gc0308_colormode gc0308_colormodes[] = {
> + [V4L2_COLORFX_NONE] =
> + GC0308_COLOR_FX(0x00, 0x0a, 0xff, 0x90, 0x00,
> + 0x54, 0x3c, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_BW] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
> + 0x54, 0x40, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_SEPIA] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
> + 0x38, 0x40, 0x80, 0xd0, 0x28),
> + [V4L2_COLORFX_NEGATIVE] =
> + GC0308_COLOR_FX(0x01, 0x0a, 0xff, 0x90, 0x00,
> + 0x38, 0x40, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_EMBOSS] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01,
> + 0x38, 0x40, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_SKETCH] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x10, 0x80,
> + 0x38, 0x80, 0x90, 0x00, 0x00),
> + [V4L2_COLORFX_SKY_BLUE] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
> + 0x38, 0x40, 0x80, 0x50, 0xe0),
> + [V4L2_COLORFX_GRASS_GREEN] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x01,
> + 0x38, 0x40, 0x80, 0xc0, 0xc0),
> + [V4L2_COLORFX_SKIN_WHITEN] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01,
> + 0x38, 0x60, 0x40, 0x00, 0x00),
> +};
> +
> +static const struct reg_sequence sensor_banding_50hz[] = {
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x78),
> + REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_2H, 0x03),
> + REG_SEQ0(GC0308_EXP_LVL_2L, 0x48),
> + REG_SEQ0(GC0308_EXP_LVL_3H, 0x04),
> + REG_SEQ0(GC0308_EXP_LVL_3L, 0xb0),
> + REG_SEQ0(GC0308_EXP_LVL_4H, 0x05),
> + REG_SEQ0(GC0308_EXP_LVL_4L, 0xa0),
> +};
> +
> +static const struct reg_sequence sensor_banding_60hz[] = {
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x64),
> + REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_2H, 0x03),
> + REG_SEQ0(GC0308_EXP_LVL_2L, 0x84),
> + REG_SEQ0(GC0308_EXP_LVL_3H, 0x04),
> + REG_SEQ0(GC0308_EXP_LVL_3L, 0xb0),
> + REG_SEQ0(GC0308_EXP_LVL_4H, 0x05),
> + REG_SEQ0(GC0308_EXP_LVL_4L, 0xdc),
> +};
> +
> +static int gc0308_power_on(struct device *dev)
> +{
> + struct gc0308 *gc0308 = dev_get_drvdata(dev);
> + int ret;
> +
> + ret = clk_prepare_enable(gc0308->clk);
> + if (ret)
> + return ret;
> +
> + gpiod_set_value_cansleep(gc0308->pwdn_gpio, 0);
> + usleep_range(10000, 20000);
> +
> + gpiod_set_value_cansleep(gc0308->reset_gpio, 1);
> + msleep(100);
> + gpiod_set_value_cansleep(gc0308->reset_gpio, 0);
> + msleep(100);

No regulator control?

> +
> + return 0;
> +}
> +
> +static int gc0308_power_off(struct device *dev)
> +{
> + struct gc0308 *gc0308 = dev_get_drvdata(dev);
> +
> + gpiod_set_value_cansleep(gc0308->pwdn_gpio, 1);
> + clk_disable_unprepare(gc0308->clk);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> +static int gc0308_g_register(struct v4l2_subdev *sd,
> + struct v4l2_dbg_register *reg)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> + int ret, val;
> +
> + ret = regmap_read(gc0308->regmap, reg->reg, &val);
> + if (ret)
> + return ret;
> +
> + reg->val = val;
> + return 0;
> +}
> +
> +static int gc0308_s_register(struct v4l2_subdev *sd,
> + const struct v4l2_dbg_register *reg)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + return regmap_write(gc0308->regmap, reg->reg, reg->val);
> +}
> +#endif
> +
> +static int gc0308_s_format(struct gc0308 *gc0308)
> +{
> + u32 i;

unsigned int?

> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_formats); i++) {
> + if (gc0308->format.code != gc0308_formats[i].code)
> + continue;
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_OUT_FORMAT, GENMASK(4, 0),
> + gc0308_formats[i].regval);
> + }
> +
> + return -EINVAL;
> +}
> +
> +static int gc0308_set_exposure(struct gc0308 *gc0308, enum gc0308_exp_val exp)
> +{
> + const struct gc0308_exposure *regs = &gc0308_exposure_values[exp];
> + struct reg_sequence exposure_reg_seq[] = {
> + REG_SEQ0(GC0308_LUMA_OFFSET, regs->luma_offset),
> + REG_SEQ0(GC0308_AEC_TARGET_Y, regs->aec_target_y),
> + };
> +
> + return regmap_multi_reg_write(gc0308->regmap,
> + exposure_reg_seq, ARRAY_SIZE(exposure_reg_seq));

Alignment.

> +}
> +
> +static int gc0308_set_awb_mode(struct gc0308 *gc0308,
> + enum v4l2_auto_n_preset_white_balance val)
> +{
> + const struct gc0308_awb_gains *regs = &gc0308_awb_gains[val];
> + struct reg_sequence awb_reg_seq[] = {
> + REG_SEQ0(GC0308_AWB_R_GAIN, regs->r),
> + REG_SEQ0(GC0308_AWB_G_GAIN, regs->g),
> + REG_SEQ0(GC0308_AWB_B_GAIN, regs->b),
> + };
> + int ret;
> +
> + ret = regmap_update_bits(gc0308->regmap, GC0308_AAAA_EN,
> + BIT(1), val == V4L2_WHITE_BALANCE_AUTO);
> + if (ret)
> + return ret;
> +
> + return regmap_multi_reg_write(gc0308->regmap,
> + awb_reg_seq, ARRAY_SIZE(awb_reg_seq));

Ditto. There are other cases, too, in the patch.

> +
> + return 0;

Redundant.

> +}
> +
> +static int gc0308_set_colormode(struct gc0308 *gc0308, enum v4l2_colorfx mode)
> +{
> + const struct gc0308_colormode *regs = &gc0308_colormodes[mode];
> + struct reg_sequence colormode_reg_seq[] = {
> + REG_SEQ0(GC0308_SPECIAL_EFFECT, regs->special_effect),
> + REG_SEQ0(GC0308_DEBUG_MODE1, regs->dbg_mode1),
> + REG_SEQ0(GC0308_BLOCK_EN1, regs->block_en1),
> + REG_SEQ0(GC0308_AEC_MODE3, regs->aec_mode3),
> + REG_SEQ0(GC0308_EEINTP_MODE_2, regs->eeintp_mode_2),
> + REG_SEQ0(GC0308_EDGE12_EFFECT, regs->edge12_effect),
> + REG_SEQ0(GC0308_LUMA_CONTRAST, regs->luma_contrast),
> + REG_SEQ0(GC0308_CONTRAST_CENTER, regs->contrast_center),
> + REG_SEQ0(GC0308_FIXED_CB, regs->fixed_cb),
> + REG_SEQ0(GC0308_FIXED_CR, regs->fixed_cr),
> + };
> +
> + return regmap_multi_reg_write(gc0308->regmap,
> + colormode_reg_seq, ARRAY_SIZE(colormode_reg_seq));
> +}
> +
> +static int _gc0308_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl);
> + uint8_t flipval = ctrl->val ? 0xff : 0x00;
> +
> + switch (ctrl->id) {
> + case V4L2_CID_VFLIP:
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_CISCTL_MODE1, BIT(1), flipval);
> + case V4L2_CID_HFLIP:
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_CISCTL_MODE1, BIT(0), flipval);
> + case V4L2_CID_AUTO_WHITE_BALANCE:
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_AAAA_EN, BIT(1), flipval);
> + case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
> + if (ctrl->val < 0 || ctrl->val > V4L2_WHITE_BALANCE_CLOUDY)
> + return -EINVAL;
> + return gc0308_set_awb_mode(gc0308, ctrl->val);
> + case V4L2_CID_POWER_LINE_FREQUENCY:
> + switch (ctrl->val) {
> + case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
> + return regmap_multi_reg_write(gc0308->regmap,
> + sensor_banding_60hz,
> + ARRAY_SIZE(sensor_banding_60hz));
> + case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
> + default:
> + return regmap_multi_reg_write(gc0308->regmap,
> + sensor_banding_50hz,
> + ARRAY_SIZE(sensor_banding_50hz));
> + }
> + case V4L2_CID_COLORFX:
> + if (ctrl->val < 0 || ctrl->val >= ARRAY_SIZE(gc0308_colormodes))
> + return -EINVAL;
> + return gc0308_set_colormode(gc0308, ctrl->val);
> + case V4L2_CID_TEST_PATTERN:
> + if (ctrl->val < 0 || ctrl->val > 2)
> + return -EINVAL;

No need to check for ctrl->val here (the control should have the correct
limits specified when the control is created, I haven't checked for this
one but at least the one below does).

There seem to be more redundant checks above, too.

> + return regmap_update_bits(gc0308->regmap,
> + GC0308_DEBUG_MODE2, GENMASK(1, 0), ctrl->val);
> + case V4L2_CID_EXPOSURE:
> + if (ctrl->val < -4 || ctrl->val > 4)
> + return -EINVAL;

^

> + return gc0308_set_exposure(gc0308, ctrl->val + 4);
> + }
> +
> + return -EINVAL;
> +}
> +
> +static int gc0308_s_ctrl(struct v4l2_ctrl *ctrl)

I wonder if this could be merged with _gc0308_s_ctrl. This is the only
caller for it.

> +{
> + struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl);
> + int ret;
> +
> + ret = pm_runtime_resume_and_get(gc0308->dev);
> + if (ret < 0)
> + return ret;
> +
> + ret = _gc0308_s_ctrl(ctrl);
> +
> + pm_runtime_put(gc0308->dev);
> +
> + if (ret)
> + dev_err(gc0308->dev, "s_ctrl failed: %d\n", ret);
> +
> + return ret;
> +}
> +
> +
> +static const struct v4l2_ctrl_ops gc0308_ctrl_ops = {
> + .s_ctrl = gc0308_s_ctrl,
> +};
> +
> +static const struct v4l2_subdev_core_ops gc0308_core_ops = {
> + .log_status = v4l2_ctrl_subdev_log_status,
> + .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
> + .unsubscribe_event = v4l2_event_subdev_unsubscribe,
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> + .g_register = gc0308_g_register,
> + .s_register = gc0308_s_register,
> +#endif
> +};
> +
> +static int gc0308_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + if (code->index >= ARRAY_SIZE(gc0308_formats))
> + return -EINVAL;
> +
> + code->code = gc0308_formats[code->index].code;
> +
> + return 0;
> +}
> +
> +static int gc0308_enum_frame_size(struct v4l2_subdev *subdev,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_frame_size_enum *fse)
> +{
> + if (fse->pad || fse->index >= ARRAY_SIZE(gc0308_frame_sizes))

Checking for pad here is redundant.

> + return -EINVAL;
> +
> + fse->min_width = gc0308_frame_sizes[fse->index].width;
> + fse->max_width = gc0308_frame_sizes[fse->index].width;
> + fse->min_height = gc0308_frame_sizes[fse->index].height;
> + fse->max_height = gc0308_frame_sizes[fse->index].height;
> +
> + return 0;
> +}
> +
> +static int gc0308_get_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_format *fmt)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + mutex_lock(&gc0308->lock);

Could you switch to sub-device state? See e.g. commit
289c25923ecdde90050a0cb3904f9295ca68b425 for an example.

> + fmt->format = gc0308->format;
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static int gc0308_set_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_format *format)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> + int format_idx = -1;
> + unsigned int best_fit = ~0L;
> + unsigned int idx = 0;
> + unsigned int i;
> +
> + mutex_lock(&gc0308->lock);
> + if (gc0308->streaming) {
> + mutex_unlock(&gc0308->lock);
> + return -EBUSY;
> + }
> +
> + if (format->pad) {
> + mutex_unlock(&gc0308->lock);
> + dev_err(gc0308->dev, "invalid pad: %d\n", format->pad);
> + return -EINVAL;
> + }

No need to check for pad: the caller will have validated it already (and as
there's a single pad in the sub-device, it'll be zero).

> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_formats); i++) {
> + if (format->format.code == gc0308_formats[i].code) {
> + format_idx = i;
> + break;
> + }
> + }
> + if (format_idx < 0) {
> + mutex_unlock(&gc0308->lock);
> + dev_err(gc0308->dev, "unsupported format code: %08x\n",
> + format->format.code);
> + return -EINVAL;

Instead of returning an error, please choose a supported format (or just
don't change it).

> + }
> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_frame_sizes); i++) {
> + unsigned int width = gc0308_frame_sizes[i].width;
> + unsigned int height = gc0308_frame_sizes[i].height;
> + unsigned int fit = abs(width - format->format.width) +
> + abs(height - format->format.height);
> + if (fit < best_fit) {
> + best_fit = fit;
> + idx = i;
> +
> + if (fit == 0)
> + break;
> + }
> + }

Could you use v4l2_find_nearest_size()?

You could also store the pointer to the array index so you would be spared
of a few checks in s_stream().

> +
> + gc0308->format.width = gc0308_frame_sizes[idx].width;
> + gc0308->format.height = gc0308_frame_sizes[idx].height;
> + gc0308->format.code = gc0308_formats[format_idx].code;
> + gc0308->format.field = V4L2_FIELD_NONE;
> + gc0308->format.colorspace = V4L2_COLORSPACE_SRGB;
> +
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static int gc0308_get_mbus_config(struct v4l2_subdev *sd,
> + unsigned int pad,
> + struct v4l2_mbus_config *cfg)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + mutex_lock(&gc0308->lock);
> + cfg->type = V4L2_MBUS_PARALLEL,
> + cfg->bus.parallel.flags = V4L2_MBUS_PCLK_SAMPLE_RISING |
> + V4L2_MBUS_DATA_ACTIVE_HIGH |
> + V4L2_MBUS_MASTER;
> +
> + if (gc0308->mbus_config & V4L2_MBUS_VSYNC_ACTIVE_LOW)
> + cfg->bus.parallel.flags |= V4L2_MBUS_VSYNC_ACTIVE_LOW;
> + else
> + cfg->bus.parallel.flags |= V4L2_MBUS_VSYNC_ACTIVE_HIGH;
> +
> + if (gc0308->mbus_config & V4L2_MBUS_HSYNC_ACTIVE_LOW)
> + cfg->bus.parallel.flags |= V4L2_MBUS_HSYNC_ACTIVE_LOW;
> + else
> + cfg->bus.parallel.flags |= V4L2_MBUS_HSYNC_ACTIVE_HIGH;

The receiver should be able to obtain this from the endpoint so I wouldn't
implement get_mbus_config at all.

> +
> +
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_pad_ops gc0308_pad_ops = {
> + .enum_mbus_code = gc0308_enum_mbus_code,
> + .enum_frame_size = gc0308_enum_frame_size,
> + .get_fmt = gc0308_get_format,
> + .set_fmt = gc0308_set_format,
> + .get_mbus_config = gc0308_get_mbus_config,
> +};
> +
> +static int gc0308_set_resolution(struct gc0308 *gc0308,
> + u8 subsample, u16 w, u16 h)
> +{
> + struct reg_sequence resolution_regs[] = {
> + REG_SEQ0(GC0308_SUBSAMPLE, subsample),
> + REG_SEQ0(GC0308_SUBMODE, 0x03),
> + REG_SEQ0(GC0308_SUB_ROW_N1, 0x00),
> + REG_SEQ0(GC0308_SUB_ROW_N2, 0x00),
> + REG_SEQ0(GC0308_SUB_COL_N1, 0x00),
> + REG_SEQ0(GC0308_SUB_COL_N2, 0x00),
> + REG_SEQ0(GC0308_CROP_WIN_MODE, 0x80),
> + REG_SEQ0(GC0308_CROP_WIN_Y1, 0x00),
> + REG_SEQ0(GC0308_CROP_WIN_X1, 0x00),
> + REG_SEQ0(GC0308_CROP_WIN_HEIGHTH, (h >> 8) & 0xFF),
> + REG_SEQ0(GC0308_CROP_WIN_HEIGHTL, (h >> 0) & 0xFF),
> + REG_SEQ0(GC0308_CROP_WIN_WIDTHH, (w >> 8) & 0xFF),
> + REG_SEQ0(GC0308_CROP_WIN_WIDTHL, (w >> 0) & 0xFF),
> + };
> +
> + return regmap_multi_reg_write(gc0308->regmap, resolution_regs,
> + ARRAY_SIZE(resolution_regs));
> +}
> +
> +static int gc0308_start_stream(struct gc0308 *gc0308)
> +{
> + int ret, sync_mode;
> + u16 width = 0, height = 0;
> + u8 subsample = 0;
> + int i;

unsigned int?

> +
> + ret = pm_runtime_resume_and_get(gc0308->dev);
> + if (ret < 0)
> + return ret;
> +
> + ret = regmap_multi_reg_write(gc0308->regmap, sensor_default_regs,
> + ARRAY_SIZE(sensor_default_regs));
> + if (ret) {
> + dev_err(gc0308->dev, "failed to write default regs\n");
> + goto disable_pm;
> + }
> +
> + ret = gc0308_s_format(gc0308);
> + if (ret) {
> + dev_err(gc0308->dev, "failed to set format\n");
> + goto disable_pm;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_frame_sizes); i++) {
> + if (gc0308_frame_sizes[i].width == gc0308->format.width &&
> + gc0308_frame_sizes[i].height == gc0308->format.height) {
> + width = gc0308_frame_sizes[i].width;
> + height = gc0308_frame_sizes[i].height;
> + subsample = gc0308_frame_sizes[i].subsample;
> + }
> + }
> +
> + if (!width || !height) {
> + dev_err(gc0308->dev, "invalid resolution\n");
> + goto disable_pm;
> + }
> +
> + ret = gc0308_set_resolution(gc0308, subsample, width, height);
> + if (ret) {
> + dev_err(gc0308->dev, "failed to write resolution regs\n");
> + goto disable_pm;
> + }
> +
> + ret = __v4l2_ctrl_handler_setup(&gc0308->hdl);
> + if (ret) {
> + dev_err(gc0308->dev, "failed to setup controls\n");
> + goto disable_pm;
> + }
> +
> + /* HSYNC/VSYNC polarity */
> + sync_mode = 0x3;
> + if (gc0308->mbus_config & V4L2_MBUS_VSYNC_ACTIVE_LOW)
> + sync_mode &= ~BIT(0);
> + if (gc0308->mbus_config & V4L2_MBUS_HSYNC_ACTIVE_LOW)
> + sync_mode &= ~BIT(1);
> + ret = regmap_write(gc0308->regmap, GC0308_SYNC_MODE, sync_mode);
> + if (ret)
> + goto disable_pm;
> +
> + return 0;
> +
> +disable_pm:
> + pm_runtime_put(gc0308->dev);
> + return ret;
> +}
> +
> +static int gc0308_stop_stream(struct gc0308 *gc0308)
> +{
> + pm_runtime_put(gc0308->dev);
> + return 0;
> +}
> +
> +static int gc0308_s_stream(struct v4l2_subdev *sd, int enable)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> + int ret = 0;
> +
> + mutex_lock(&gc0308->lock);
> +
> + if (gc0308->streaming == enable)
> + goto exit;

No need to check: you can rely the caller won't enable streaming if it's
enabled (or disable it if it's disabled).

You can drop initialising ret, then.

> +
> + if (enable)
> + ret = gc0308_start_stream(gc0308);
> + else
> + ret = gc0308_stop_stream(gc0308);
> +
> + if (!ret)
> + gc0308->streaming = enable;
> +
> +exit:
> + mutex_unlock(&gc0308->lock);
> + return ret;
> +}
> +
> +static int gc0308_g_frame_interval(struct v4l2_subdev *sd,
> + struct v4l2_subdev_frame_interval *fi)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + mutex_lock(&gc0308->lock);
> + fi->interval = gc0308->frame_interval;
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_video_ops gc0308_video_ops = {
> + .g_frame_interval = gc0308_g_frame_interval,
> + .s_stream = gc0308_s_stream,
> +};
> +
> +static const struct v4l2_subdev_ops gc0308_subdev_ops = {
> + .core = &gc0308_core_ops,
> + .pad = &gc0308_pad_ops,
> + .video = &gc0308_video_ops,
> +};
> +
> +static int gc0308_bus_config(struct gc0308 *gc0308)
> +{
> + struct device *dev = gc0308->dev;
> + struct v4l2_fwnode_endpoint bus_cfg = {
> + .bus_type = V4L2_MBUS_PARALLEL
> + };
> + struct fwnode_handle *ep;
> + int ret;
> +
> + ep = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);

ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 0, 0, 0);

> + if (!ep)
> + return -EINVAL;
> +
> + ret = v4l2_fwnode_endpoint_parse(ep, &bus_cfg);
> + fwnode_handle_put(ep);
> + if (ret)
> + return ret;
> +
> + gc0308->mbus_config = bus_cfg.bus.parallel.flags;
> +
> + return 0;
> +}
> +
> +static const char * const gc0308_test_pattern_menu[] = {
> + "Disabled",
> + "Test Image 1",
> + "Test Image 2",
> +};
> +
> +static void gc0308_mutex_destroy(void *data)
> +{
> + struct gc0308 *gc0308 = data;
> +
> + mutex_destroy(&gc0308->lock);
> +}
> +
> +static int gc0308_probe(struct i2c_client *client)
> +{
> + struct device *dev = &client->dev;
> + struct gc0308 *gc0308;
> + int ret, regval;
> +
> + gc0308 = devm_kzalloc(dev, sizeof(*gc0308), GFP_KERNEL);
> + if (!gc0308)
> + return -ENOMEM;
> +
> + gc0308->dev = dev;
> + dev_set_drvdata(dev, gc0308);
> +
> + ret = gc0308_bus_config(gc0308);
> + if (ret)
> + return dev_err_probe(dev, ret, "failed to get bus config\n");
> +
> + gc0308->format.width = gc0308_frame_sizes[0].width;
> + gc0308->format.height = gc0308_frame_sizes[0].height;
> + gc0308->format.field = V4L2_FIELD_NONE;
> + gc0308->format.code = gc0308_formats[2].code;
> + gc0308->format.colorspace = V4L2_COLORSPACE_SRGB;
> + gc0308->frame_interval.numerator = 1;
> + gc0308->frame_interval.denominator = GC0308_FRAME_RATE;
> +
> + gc0308->clk = devm_clk_get_optional(dev, NULL);
> + if (IS_ERR(gc0308->clk))
> + return dev_err_probe(dev, PTR_ERR(gc0308->clk),
> + "could not get clk\n");
> +
> + ret = clk_set_rate(gc0308->clk, 24000000);

Please instead get the rate, then check it's what you expect (I'd just
print a warning if there's a discrepancy).

> + if (ret)
> + return dev_err_probe(dev, ret, "failed to set clock rate\n");
> +
> + gc0308->vdd = devm_regulator_get(dev, "vdd28");
> + if (IS_ERR(gc0308->vdd))
> + return dev_err_probe(dev, PTR_ERR(gc0308->vdd),
> + "failed to get vdd28 regulator\n");
> +
> + gc0308->pwdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);
> + if (IS_ERR(gc0308->pwdn_gpio))
> + return dev_err_probe(dev, PTR_ERR(gc0308->pwdn_gpio),
> + "failed to get powerdown gpio\n");
> +
> + gc0308->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
> + if (IS_ERR(gc0308->reset_gpio))
> + return dev_err_probe(dev, PTR_ERR(gc0308->reset_gpio),
> + "failed to get reset gpio\n");
> +
> + gc0308->regmap = devm_regmap_init_i2c(client, &gc0308_regmap_config);
> + if (IS_ERR(gc0308->regmap))
> + return dev_err_probe(dev, PTR_ERR(gc0308->regmap),
> + "failed to init regmap\n");
> +
> + mutex_init(&gc0308->lock);
> + ret = devm_add_action_or_reset(dev, gc0308_mutex_destroy, gc0308);
> + if (ret)
> + return ret;
> +
> + v4l2_i2c_subdev_init(&gc0308->sd, client, &gc0308_subdev_ops);
> + gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> + gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_EVENTS;
> +
> + v4l2_ctrl_handler_init(&gc0308->hdl, 8);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_VFLIP, 0, 1, 1, 0);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_HFLIP, 0, 1, 1, 0);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
> + v4l2_ctrl_new_std_menu_items(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(gc0308_test_pattern_menu) - 1,
> + 0, 0, gc0308_test_pattern_menu);
> + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
> + 8, ~0x14e, V4L2_WHITE_BALANCE_AUTO);
> + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_COLORFX, 8, 0, V4L2_COLORFX_NONE);
> + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_POWER_LINE_FREQUENCY,
> + V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
> + ~0x6, V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_EXPOSURE, -4, 4, 1, 0);

The correct control would seem to be V4L2_CID_AUTO_EXPOSURE_BIAS.

> +
> + gc0308->hdl.lock = &gc0308->lock;
> + gc0308->sd.ctrl_handler = &gc0308->hdl;
> + if (gc0308->hdl.error) {
> + ret = gc0308->hdl.error;
> + return ret;
> + }
> +
> + gc0308->pad.flags = MEDIA_PAD_FL_SOURCE;
> + gc0308->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
> + ret = media_entity_pads_init(&gc0308->sd.entity, 1, &gc0308->pad);
> + if (ret < 0)
> + return ret;
> +
> + ret = gc0308_power_on(dev);
> + if (ret)
> + return ret;
> +
> + ret = regmap_read(gc0308->regmap, GC0308_CHIP_ID, &regval);
> + if (ret < 0)

You'll need gc0308_power_off() here and onwards. (I'd add a new label.)

> + return dev_err_probe(dev, ret, "failed to read chip ID\n");
> +
> + if (regval != 0x9b)
> + return dev_err_probe(dev, -EINVAL, "invalid chip ID (%02x)\n",
> + regval);
> +
> + ret = v4l2_async_register_subdev(&gc0308->sd);
> + if (ret)
> + return dev_err_probe(dev, ret, "failed to register v4l subdev\n");
> +
> + pm_runtime_set_active(dev);
> + pm_runtime_enable(dev);
> + pm_runtime_idle(dev);
> +
> + return 0;
> +}
> +
> +static void gc0308_remove(struct i2c_client *client)
> +{
> + struct gc0308 *gc0308 = i2c_get_clientdata(client);
> + struct device *dev = &client->dev;
> +
> + pm_runtime_get_sync(dev);
> +
> + v4l2_async_unregister_subdev(&gc0308->sd);
> + v4l2_ctrl_handler_free(&gc0308->hdl);
> +
> + pm_runtime_disable(dev);
> + pm_runtime_set_suspended(dev);
> + pm_runtime_put_noidle(dev);
> + gc0308_power_off(dev);
> +}
> +
> +static const struct dev_pm_ops gc0308_pm_ops = {
> + SET_RUNTIME_PM_OPS(gc0308_power_off, gc0308_power_on, NULL)
> +};
> +
> +static const struct of_device_id gc0308_of_match[] = {
> + { .compatible = "galaxycore,gc0308" },
> + { .compatible = "galaxycore,gc0309" },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, gc0308_of_match);
> +
> +static struct i2c_driver gc0308_i2c_driver = {
> + .driver = {
> + .name = "gc0308",
> + .pm = &gc0308_pm_ops,
> + .of_match_table = gc0308_of_match,
> + },
> + .probe = gc0308_probe,
> + .remove = gc0308_remove,
> +};
> +module_i2c_driver(gc0308_i2c_driver);
> +
> +MODULE_DESCRIPTION("GalaxyCore GC0308 Camera Driver");
> +MODULE_AUTHOR("Sebastian Reichel <[email protected]>");
> +MODULE_LICENSE("GPL");

--
Kind regards,

Sakari Ailus

2023-10-23 08:56:00

by Tommaso Merciai

[permalink] [raw]

Subject: Re: [PATCH v1 3/3] media: i2c: gc0308: new driver

Hi Sebastian,
Thanks for the patch.

On Mon, Oct 23, 2023 at 02:22:09AM +0200, Sebastian Reichel wrote:
> Introduce new driver for GalaxyCore GC0308, which is a cheap
> 640x480 with an on-chip ISP sensor sold since 2010. Data is
> provided via parallel bus.
>
> Signed-off-by: Sebastian Reichel <[email protected]>
> ---
> drivers/media/i2c/Kconfig | 14 +
> drivers/media/i2c/Makefile | 1 +
> drivers/media/i2c/gc0308.c | 1451 ++++++++++++++++++++++++++++++++++++
> 3 files changed, 1466 insertions(+)
> create mode 100644 drivers/media/i2c/gc0308.c

You are missing the new entry into MAINTAINERS file for this new driver
or I'm completely wrong?

Thanks & Regards,
Tommaso

>
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index 74ff833ff48c..7db4abc0ef88 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -50,6 +50,20 @@ config VIDEO_AR0521
> To compile this driver as a module, choose M here: the
> module will be called ar0521.
>
> +config VIDEO_GC0308
> + tristate "GalaxyCore GC0308 sensor support"
> + depends on I2C && VIDEO_DEV
> + select MEDIA_CONTROLLER
> + select VIDEO_V4L2_SUBDEV_API
> + select V4L2_FWNODE
> + select REGMAP_I2C
> + help
> + This is a Video4Linux2 sensor driver for the GalaxyCore
> + GC0308 camera.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called gc0308.
> +
> config VIDEO_HI556
> tristate "Hynix Hi-556 sensor support"
> help
> diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
> index 80b00d39b48f..f03a21f2962a 100644
> --- a/drivers/media/i2c/Makefile
> +++ b/drivers/media/i2c/Makefile
> @@ -36,6 +36,7 @@ obj-$(CONFIG_VIDEO_DW9719) += dw9719.o
> obj-$(CONFIG_VIDEO_DW9768) += dw9768.o
> obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o
> obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8/
> +obj-$(CONFIG_VIDEO_GC0308) += gc0308.o
> obj-$(CONFIG_VIDEO_HI556) += hi556.o
> obj-$(CONFIG_VIDEO_HI846) += hi846.o
> obj-$(CONFIG_VIDEO_HI847) += hi847.o
> diff --git a/drivers/media/i2c/gc0308.c b/drivers/media/i2c/gc0308.c
> new file mode 100644
> index 000000000000..c92370aed43b
> --- /dev/null
> +++ b/drivers/media/i2c/gc0308.c
> @@ -0,0 +1,1451 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Driver for the GalaxyCore GC0308/GC0309 camera sensor.
> + *
> + * Copyright (c) 2023 Sebastian Reichel <[email protected]>
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/device.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/i2c.h>
> +#include <linux/module.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regmap.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-subdev.h>
> +
> +/* Analog & CISCTL*/
> +#define GC0308_CHIP_ID 0x000
> +#define GC0308_HBLANK 0x001
> +#define GC0308_VBLANK 0x002
> +#define GC0308_EXPH 0x003
> +#define GC0308_EXPL 0x004
> +#define GC0308_ROW_STARTH 0x005
> +#define GC0308_ROW_STARTL 0x006
> +#define GC0308_COL_STARTH 0x007
> +#define GC0308_COL_STARTL 0x008
> +#define GC0308_WIN_HEIGHTH 0x009
> +#define GC0308_WIN_HEIGHTL 0x00a
> +#define GC0308_WIN_WIDTHH 0x00b
> +#define GC0308_WIN_WIDTHL 0x00c
> +#define GC0308_VS_ST 0x00d
> +#define GC0308_VS_ET 0x00e
> +#define GC0308_VB_HB 0x00f
> +#define GC0308_RSH_WIDTH 0x010
> +#define GC0308_TSP_WIDTH 0x011
> +#define GC0308_SH_DELAY 0x012
> +#define GC0308_ROW_TAIL_WIDTH 0x013
> +#define GC0308_CISCTL_MODE1 0x014
> +#define GC0308_CISCTL_MODE2 0x015
> +#define GC0308_CISCTL_MODE3 0x016
> +#define GC0308_CISCTL_MODE4 0x017
> +#define GC0308_ANALOG_MODE1 0x01a
> +#define GC0308_ANALOG_MODE2 0x01b
> +#define GC0308_HRST_RSG_V18 0x01c
> +#define GC0308_VREF_V25 0x01d
> +#define GC0308_ADC_R 0x01e
> +#define GC0308_PAD_DRV 0x01f
> +#define GC0308_SOFT_RESET 0x0fe
> +
> +/* ISP */
> +#define GC0308_BLOCK_EN1 0x020
> +#define GC0308_BLOCK_EN2 0x021
> +#define GC0308_AAAA_EN 0x022
> +#define GC0308_SPECIAL_EFFECT 0x023
> +#define GC0308_OUT_FORMAT 0x024
> +#define GC0308_OUT_EN 0x025
> +#define GC0308_SYNC_MODE 0x026
> +#define GC0308_CLK_DIV_MODE 0x028
> +#define GC0308_BYPASS_MODE 0x029
> +#define GC0308_CLK_GATING 0x02a
> +#define GC0308_DITHER_MODE 0x02b
> +#define GC0308_DITHER_BIT 0x02c
> +#define GC0308_DEBUG_MODE1 0x02d
> +#define GC0308_DEBUG_MODE2 0x02e
> +#define GC0308_DEBUG_MODE3 0x02f
> +#define GC0308_CROP_WIN_MODE 0x046
> +#define GC0308_CROP_WIN_Y1 0x047
> +#define GC0308_CROP_WIN_X1 0x048
> +#define GC0308_CROP_WIN_HEIGHTH 0x049
> +#define GC0308_CROP_WIN_HEIGHTL 0x04a
> +#define GC0308_CROP_WIN_WIDTHH 0x04b
> +#define GC0308_CROP_WIN_WIDTHL 0x04c
> +
> +/* BLK */
> +#define GC0308_BLK_MODE 0x030
> +#define GC0308_BLK_LIMIT_VAL 0x031
> +#define GC0308_GLOBAL_OFF 0x032
> +#define GC0308_CURRENT_R_OFF 0x033
> +#define GC0308_CURRENT_G_OFF 0x034
> +#define GC0308_CURRENT_B_OFF 0x035
> +#define GC0308_CURRENT_R_DARK_CURRENT 0x036
> +#define GC0308_CURRENT_G_DARK_CURRENT 0x037
> +#define GC0308_CURRENT_B_DARK_CURRENT 0x038
> +#define GC0308_EXP_RATE_DARKC 0x039
> +#define GC0308_OFF_SUBMODE 0x03a
> +#define GC0308_DARKC_SUBMODE 0x03b
> +#define GC0308_MANUAL_G1_OFF 0x03c
> +#define GC0308_MANUAL_R1_OFF 0x03d
> +#define GC0308_MANUAL_B2_OFF 0x03e
> +#define GC0308_MANUAL_G2_OFF 0x03f
> +
> +/* PREGAIN */
> +#define GC0308_GLOBAL_GAIN 0x050
> +#define GC0308_AUTO_PREGAIN 0x051
> +#define GC0308_AUTO_POSTGAIN 0x052
> +#define GC0308_CHANNEL_GAIN_G1 0x053
> +#define GC0308_CHANNEL_GAIN_R 0x054
> +#define GC0308_CHANNEL_GAIN_B 0x055
> +#define GC0308_CHANNEL_GAIN_G2 0x056
> +#define GC0308_R_RATIO 0x057
> +#define GC0308_G_RATIO 0x058
> +#define GC0308_B_RATIO 0x059
> +#define GC0308_AWB_R_GAIN 0x05a
> +#define GC0308_AWB_G_GAIN 0x05b
> +#define GC0308_AWB_B_GAIN 0x05c
> +#define GC0308_LSC_DEC_LVL1 0x05d
> +#define GC0308_LSC_DEC_LVL2 0x05e
> +#define GC0308_LSC_DEC_LVL3 0x05f
> +
> +/* DNDD */
> +#define GC0308_DN_MODE_EN 0x060
> +#define GC0308_DN_MODE_RATIO 0x061
> +#define GC0308_DN_BILAT_B_BASE 0x062
> +#define GC0308_DN_B_INCR 0x063
> +#define GC0308_DN_BILAT_N_BASE 0x064
> +#define GC0308_DN_N_INCR 0x065
> +#define GC0308_DD_DARK_BRIGHT_TH 0x066
> +#define GC0308_DD_FLAT_TH 0x067
> +#define GC0308_DD_LIMIT 0x068
> +
> +/* ASDE - Auto Saturation De-noise and Edge-Enhancement */
> +#define GC0308_ASDE_GAIN_TRESH 0x069
> +#define GC0308_ASDE_GAIN_MODE 0x06a
> +#define GC0308_ASDE_DN_SLOPE 0x06b
> +#define GC0308_ASDE_DD_BRIGHT 0x06c
> +#define GC0308_ASDE_DD_LIMIT 0x06d
> +#define GC0308_ASDE_AUTO_EE1 0x06e
> +#define GC0308_ASDE_AUTO_EE2 0x06f
> +#define GC0308_ASDE_AUTO_SAT_DEC_SLOPE 0x070
> +#define GC0308_ASDE_AUTO_SAT_LOW_LIMIT 0x071
> +
> +/* INTPEE - Interpolation and Edge-Enhancement */
> +#define GC0308_EEINTP_MODE_1 0x072
> +#define GC0308_EEINTP_MODE_2 0x073
> +#define GC0308_DIRECTION_TH1 0x074
> +#define GC0308_DIRECTION_TH2 0x075
> +#define GC0308_DIFF_HV_TI_TH 0x076
> +#define GC0308_EDGE12_EFFECT 0x077
> +#define GC0308_EDGE_POS_RATIO 0x078
> +#define GC0308_EDGE1_MINMAX 0x079
> +#define GC0308_EDGE2_MINMAX 0x07a
> +#define GC0308_EDGE12_TH 0x07b
> +#define GC0308_EDGE_MAX 0x07c
> +
> +/* ABB - Auto Black Balance */
> +#define GC0308_ABB_MODE 0x080
> +#define GC0308_ABB_TARGET_AVGH 0x081
> +#define GC0308_ABB_TARGET_AVGL 0x082
> +#define GC0308_ABB_LIMIT_VAL 0x083
> +#define GC0308_ABB_SPEED 0x084
> +#define GC0308_CURR_R_BLACK_LVL 0x085
> +#define GC0308_CURR_G_BLACK_LVL 0x086
> +#define GC0308_CURR_B_BLACK_LVL 0x087
> +#define GC0308_CURR_R_BLACK_FACTOR 0x088
> +#define GC0308_CURR_G_BLACK_FACTOR 0x089
> +#define GC0308_CURR_B_BLACK_FACTOR 0x08a
> +
> +/* LSC - Lens Shading Correction */
> +#define GC0308_LSC_RED_B2 0x08b
> +#define GC0308_LSC_GREEN_B2 0x08c
> +#define GC0308_LSC_BLUE_B2 0x08d
> +#define GC0308_LSC_RED_B4 0x08e
> +#define GC0308_LSC_GREEN_B4 0x08f
> +#define GC0308_LSC_BLUE_B4 0x090
> +#define GC0308_LSC_ROW_CENTER 0x091
> +#define GC0308_LSC_COL_CENTER 0x092
> +
> +/* CC - Channel Coefficient */
> +#define GC0308_CC_MATRIX_C11 0x093
> +#define GC0308_CC_MATRIX_C12 0x094
> +#define GC0308_CC_MATRIX_C13 0x095
> +#define GC0308_CC_MATRIX_C21 0x096
> +#define GC0308_CC_MATRIX_C22 0x097
> +#define GC0308_CC_MATRIX_C23 0x098
> +#define GC0308_CC_MATRIX_C41 0x09c
> +#define GC0308_CC_MATRIX_C42 0x09d
> +#define GC0308_CC_MATRIX_C43 0x09e
> +
> +/* GAMMA */
> +#define GC0308_GAMMA_OUT0 0x09f
> +#define GC0308_GAMMA_OUT1 0x0a0
> +#define GC0308_GAMMA_OUT2 0x0a1
> +#define GC0308_GAMMA_OUT3 0x0a2
> +#define GC0308_GAMMA_OUT4 0x0a3
> +#define GC0308_GAMMA_OUT5 0x0a4
> +#define GC0308_GAMMA_OUT6 0x0a5
> +#define GC0308_GAMMA_OUT7 0x0a6
> +#define GC0308_GAMMA_OUT8 0x0a7
> +#define GC0308_GAMMA_OUT9 0x0a8
> +#define GC0308_GAMMA_OUT10 0x0a9
> +#define GC0308_GAMMA_OUT11 0x0aa
> +#define GC0308_GAMMA_OUT12 0x0ab
> +#define GC0308_GAMMA_OUT13 0x0ac
> +#define GC0308_GAMMA_OUT14 0x0ad
> +#define GC0308_GAMMA_OUT15 0x0ae
> +#define GC0308_GAMMA_OUT16 0x0af
> +
> +/* YCP */
> +#define GC0308_GLOBAL_SATURATION 0x0b0
> +#define GC0308_SATURATION_CB 0x0b1
> +#define GC0308_SATURATION_CR 0x0b2
> +#define GC0308_LUMA_CONTRAST 0x0b3
> +#define GC0308_CONTRAST_CENTER 0x0b4
> +#define GC0308_LUMA_OFFSET 0x0b5
> +#define GC0308_SKIN_CB_CENTER 0x0b6
> +#define GC0308_SKIN_CR_CENTER 0x0b7
> +#define GC0308_SKIN_RADIUS_SQUARE 0x0b8
> +#define GC0308_SKIN_BRIGHTNESS 0x0b9
> +#define GC0308_FIXED_CB 0x0ba
> +#define GC0308_FIXED_CR 0x0bb
> +#define GC0308_EDGE_DEC_SA 0x0bd
> +#define GC0308_AUTO_GRAY_MODE 0x0be
> +#define GC0308_SATURATION_SUB_STRENGTH 0x0bf
> +#define GC0308_Y_GAMMA_OUT0 0x0c0
> +#define GC0308_Y_GAMMA_OUT1 0x0c1
> +#define GC0308_Y_GAMMA_OUT2 0x0c2
> +#define GC0308_Y_GAMMA_OUT3 0x0c3
> +#define GC0308_Y_GAMMA_OUT4 0x0c4
> +#define GC0308_Y_GAMMA_OUT5 0x0c5
> +#define GC0308_Y_GAMMA_OUT6 0x0c6
> +#define GC0308_Y_GAMMA_OUT7 0x0c7
> +#define GC0308_Y_GAMMA_OUT8 0x0c8
> +#define GC0308_Y_GAMMA_OUT9 0x0c9
> +#define GC0308_Y_GAMMA_OUT10 0x0ca
> +#define GC0308_Y_GAMMA_OUT11 0x0cb
> +#define GC0308_Y_GAMMA_OUT12 0x0cc
> +
> +/* AEC - Automatic Exposure Control */
> +#define GC0308_AEC_MODE1 0x0d0
> +#define GC0308_AEC_MODE2 0x0d1
> +#define GC0308_AEC_MODE3 0x0d2
> +#define GC0308_AEC_TARGET_Y 0x0d3
> +#define GC0308_Y_AVG 0x0d4
> +#define GC0308_AEC_HIGH_LOW_RANGE 0x0d5
> +#define GC0308_AEC_IGNORE 0x0d6
> +#define GC0308_AEC_LIMIT_HIGH_RANGE 0x0d7
> +#define GC0308_AEC_R_OFFSET 0x0d9
> +#define GC0308_AEC_GB_OFFSET 0x0da
> +#define GC0308_AEC_SLOW_MARGIN 0x0db
> +#define GC0308_AEC_FAST_MARGIN 0x0dc
> +#define GC0308_AEC_EXP_CHANGE_GAIN 0x0dd
> +#define GC0308_AEC_STEP2_SUNLIGHT 0x0de
> +#define GC0308_AEC_I_FRAMES 0x0df
> +#define GC0308_AEC_I_STOP_L_MARGIN 0x0e0
> +#define GC0308_AEC_I_STOP_MARGIN 0x0e1
> +#define GC0308_ANTI_FLICKER_STEP_H 0x0e2
> +#define GC0308_ANTI_FLICKER_STEP_L 0x0e3
> +#define GC0308_EXP_LVL_1H 0x0e4
> +#define GC0308_EXP_LVL_1L 0x0e5
> +#define GC0308_EXP_LVL_2H 0x0e6
> +#define GC0308_EXP_LVL_2L 0x0e7
> +#define GC0308_EXP_LVL_3H 0x0e8
> +#define GC0308_EXP_LVL_3L 0x0e9
> +#define GC0308_EXP_LVL_4H 0x0ea
> +#define GC0308_EXP_LVL_4L 0x0eb
> +#define GC0308_MAX_EXP_LVL 0x0ec
> +#define GC0308_EXP_MIN_L 0x0ed
> +#define GC0308_MAX_POST_DF_GAIN 0x0ee
> +#define GC0308_MAX_PRE_DG_GAIN 0x0ef
> +
> +/* ABS */
> +#define GC0308_ABS_RANGE_COMP 0x0f0
> +#define GC0308_ABS_STOP_MARGIN 0x0f1
> +#define GC0308_Y_S_COMP 0x0f2
> +#define GC0308_Y_STRETCH_LIMIT 0x0f3
> +#define GC0308_Y_TILT 0x0f4
> +#define GC0308_Y_STRETCH 0x0f5
> +
> +/* Measure Window */
> +#define GC0308_BIG_WIN_X0 0x0f7
> +#define GC0308_BIG_WIN_Y0 0x0f8
> +#define GC0308_BIG_WIN_X1 0x0f9
> +#define GC0308_BIG_WIN_Y1 0x0fa
> +#define GC0308_DIFF_Y_BIG_THD 0x0fb
> +
> +/* OUT Module (P1) */
> +#define GC0308_CLOSE_FRAME_EN 0x150
> +#define GC0308_CLOSE_FRAME_NUM1 0x151
> +#define GC0308_CLOSE_FRAME_NUM2 0x152
> +#define GC0308_BAYER_MODE 0x153
> +#define GC0308_SUBSAMPLE 0x154
> +#define GC0308_SUBMODE 0x155
> +#define GC0308_SUB_ROW_N1 0x156
> +#define GC0308_SUB_ROW_N2 0x157
> +#define GC0308_SUB_COL_N1 0x158
> +#define GC0308_SUB_COL_N2 0x159
> +
> +/* AWB (P1) - Auto White Balance */
> +#define GC0308_AWB_RGB_HIGH_LOW 0x100
> +#define GC0308_AWB_Y_TO_C_DIFF2 0x102
> +#define GC0308_AWB_C_MAX 0x104
> +#define GC0308_AWB_C_INTER 0x105
> +#define GC0308_AWB_C_INTER2 0x106
> +#define GC0308_AWB_C_MAX_BIG 0x108
> +#define GC0308_AWB_Y_HIGH 0x109
> +#define GC0308_AWB_NUMBER_LIMIT 0x10a
> +#define GC0308_KWIN_RATIO 0x10b
> +#define GC0308_KWIN_THD 0x10c
> +#define GC0308_LIGHT_GAIN_RANGE 0x10d
> +#define GC0308_SMALL_WIN_WIDTH_STEP 0x10e
> +#define GC0308_SMALL_WIN_HEIGHT_STEP 0x10f
> +#define GC0308_AWB_YELLOW_TH 0x110
> +#define GC0308_AWB_MODE 0x111
> +#define GC0308_AWB_ADJUST_SPEED 0x112
> +#define GC0308_AWB_EVERY_N 0x113
> +#define GC0308_R_AVG_USE 0x1d0
> +#define GC0308_G_AVG_USE 0x1d1
> +#define GC0308_B_AVG_USE 0x1d2
> +
> +#define GC0308_FRAME_RATE 29
> +
> +enum gc0308_exp_val {
> + GC0308_EXP_M4 = 0,
> + GC0308_EXP_M3,
> + GC0308_EXP_M2,
> + GC0308_EXP_M1,
> + GC0308_EXP_0,
> + GC0308_EXP_P1,
> + GC0308_EXP_P2,
> + GC0308_EXP_P3,
> + GC0308_EXP_P4,
> +};
> +
> +struct gc0308_exposure {
> + u8 luma_offset;
> + u8 aec_target_y;
> +};
> +
> +#define GC0308_EXPOSURE(luma_offset_reg, aec_target_y_reg) \
> + { .luma_offset = luma_offset_reg, .aec_target_y = aec_target_y_reg }
> +
> +static const struct gc0308_exposure gc0308_exposure_values[] = {
> + [GC0308_EXP_M4] = GC0308_EXPOSURE(0xc0, 0x30),
> + [GC0308_EXP_M3] = GC0308_EXPOSURE(0xd0, 0x38),
> + [GC0308_EXP_M2] = GC0308_EXPOSURE(0xe0, 0x40),
> + [GC0308_EXP_M1] = GC0308_EXPOSURE(0xf0, 0x48),
> + [GC0308_EXP_0] = GC0308_EXPOSURE(0x08, 0x50),
> + [GC0308_EXP_P1] = GC0308_EXPOSURE(0x10, 0x5c),
> + [GC0308_EXP_P2] = GC0308_EXPOSURE(0x20, 0x60),
> + [GC0308_EXP_P3] = GC0308_EXPOSURE(0x30, 0x68),
> + [GC0308_EXP_P4] = GC0308_EXPOSURE(0x40, 0x70),
> +};
> +
> +struct gc0308_awb_gains {
> + u8 r;
> + u8 g;
> + u8 b;
> +};
> +
> +#define GC0308_AWB_GAINS(red, green, blue) \
> + { .r = red, .g = green, .b = blue }
> +
> +static const struct gc0308_awb_gains gc0308_awb_gains[] = {
> + [V4L2_WHITE_BALANCE_AUTO] = GC0308_AWB_GAINS(0x56, 0x40, 0x4a),
> + [V4L2_WHITE_BALANCE_CLOUDY] = GC0308_AWB_GAINS(0x8c, 0x50, 0x40),
> + [V4L2_WHITE_BALANCE_DAYLIGHT] = GC0308_AWB_GAINS(0x74, 0x52, 0x40),
> + [V4L2_WHITE_BALANCE_INCANDESCENT] = GC0308_AWB_GAINS(0x48, 0x40, 0x5c),
> + [V4L2_WHITE_BALANCE_FLUORESCENT] = GC0308_AWB_GAINS(0x40, 0x42, 0x50),
> +};
> +
> +struct gc0308_format {
> + u32 code;
> + u8 regval;
> +};
> +
> +#define GC0308_FORMAT(v4l2_code, gc0308_regval) \
> + { .code = v4l2_code, .regval = gc0308_regval }
> +
> +static const struct gc0308_format gc0308_formats[] = {
> + GC0308_FORMAT(MEDIA_BUS_FMT_UYVY8_2X8, 0x00),
> + GC0308_FORMAT(MEDIA_BUS_FMT_VYUY8_2X8, 0x01),
> + GC0308_FORMAT(MEDIA_BUS_FMT_YUYV8_2X8, 0x02),
> + GC0308_FORMAT(MEDIA_BUS_FMT_YVYU8_2X8, 0x03),
> + GC0308_FORMAT(MEDIA_BUS_FMT_RGB565_2X8_BE, 0x06),
> + GC0308_FORMAT(MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, 0x07),
> + GC0308_FORMAT(MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE, 0x09),
> +};
> +
> +struct gc0308_frame_size {
> + u8 subsample;
> + u16 width;
> + u16 height;
> +};
> +
> +#define GC0308_FRAME_SIZE(s, w, h) \
> + { .subsample = s, .width = w, .height = h }
> +
> +static const struct gc0308_frame_size gc0308_frame_sizes[] = {
> + GC0308_FRAME_SIZE(0x11, 640, 480),
> + GC0308_FRAME_SIZE(0x22, 320, 240),
> + GC0308_FRAME_SIZE(0x44, 160, 120),
> +};
> +
> +struct gc0308 {
> + struct v4l2_subdev sd;
> + struct v4l2_ctrl_handler hdl;
> + struct media_pad pad;
> + struct v4l2_mbus_framefmt format;
> + struct device *dev;
> + struct clk *clk;
> + struct regmap *regmap;
> + struct regulator *vdd;
> + struct gpio_desc *pwdn_gpio;
> + struct gpio_desc *reset_gpio;
> + struct mutex lock; /* mutex lock for operations */
> + bool streaming;
> + unsigned int mbus_config;
> + struct v4l2_fract frame_interval;
> +};
> +
> +static inline struct gc0308 *to_gc0308(struct v4l2_subdev *sd)
> +{
> + return container_of(sd, struct gc0308, sd);
> +}
> +
> +static const struct regmap_range_cfg gc0308_ranges[] = {
> + {
> + .range_min = 0x0000,
> + .range_max = 0x01ff,
> + .selector_reg = 0xfe,
> + .selector_mask = 0x01,
> + .selector_shift = 0x00,
> + .window_start = 0x00,
> + .window_len = 0x100,
> + },
> +};
> +
> +static const struct regmap_config gc0308_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = 0x1ff,
> + .ranges = gc0308_ranges,
> + .num_ranges = ARRAY_SIZE(gc0308_ranges),
> + .cache_type = REGCACHE_RBTREE,
> +};
> +
> +static const struct reg_sequence sensor_default_regs[] = {
> + REG_SEQ0(GC0308_VB_HB, 0x00),
> + REG_SEQ0(GC0308_HBLANK, 0x40),
> + REG_SEQ0(GC0308_VBLANK, 0x20),
> + REG_SEQ0(GC0308_EXPH, 0x02),
> + REG_SEQ0(GC0308_EXPL, 0x58),
> + REG_SEQ0(GC0308_AWB_R_GAIN, 0x56),
> + REG_SEQ0(GC0308_AWB_G_GAIN, 0x40),
> + REG_SEQ0(GC0308_AWB_B_GAIN, 0x4a),
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_H, 0x00),
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x78),
> + REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_2H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_2L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_3H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_3L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_4H, 0x0e),
> + REG_SEQ0(GC0308_EXP_LVL_4L, 0xa6),
> + REG_SEQ0(GC0308_MAX_EXP_LVL, 0x20),
> + REG_SEQ0(GC0308_ROW_STARTH, 0x00),
> + REG_SEQ0(GC0308_ROW_STARTL, 0x00),
> + REG_SEQ0(GC0308_COL_STARTH, 0x00),
> + REG_SEQ0(GC0308_COL_STARTL, 0x00),
> + REG_SEQ0(GC0308_WIN_HEIGHTH, 0x01), /* 0x1e8 = 488 => VT=480 */
> + REG_SEQ0(GC0308_WIN_HEIGHTL, 0xe8),
> + REG_SEQ0(GC0308_WIN_WIDTHH, 0x02), /* 0x288 = 648 => VH=640 */
> + REG_SEQ0(GC0308_WIN_WIDTHL, 0x88),
> + REG_SEQ0(GC0308_VS_ST, 0x02), /* Start Time (in rows) */
> + REG_SEQ0(GC0308_VS_ET, 0x02), /* End Time (in rows) */
> + REG_SEQ0(GC0308_RSH_WIDTH, 0x22),
> + REG_SEQ0(GC0308_TSP_WIDTH, 0x0d),
> + REG_SEQ0(GC0308_SH_DELAY, 0x50), /* sample hold delay post row finish */
> + REG_SEQ0(GC0308_ROW_TAIL_WIDTH, 0x0f),
> + REG_SEQ0(GC0308_CISCTL_MODE1, 0x10),
> + REG_SEQ0(GC0308_CISCTL_MODE2, 0x0a),
> + REG_SEQ0(GC0308_CISCTL_MODE3, 0x05),
> + REG_SEQ0(GC0308_CISCTL_MODE4, 0x01),
> + REG_SEQ0(0x018, 0x44), /* undocumented */
> + REG_SEQ0(0x019, 0x44), /* undocumented */
> + REG_SEQ0(GC0308_ANALOG_MODE1, 0x2a),
> + REG_SEQ0(GC0308_ANALOG_MODE2, 0x00),
> + REG_SEQ0(GC0308_HRST_RSG_V18, 0x49),
> + REG_SEQ0(GC0308_VREF_V25, 0x9a),
> + REG_SEQ0(GC0308_ADC_R, 0x61),
> + REG_SEQ0(GC0308_PAD_DRV, 0x01), /* drv strength: pclk=4mA */
> + REG_SEQ0(GC0308_BLOCK_EN1, 0x7f),
> + REG_SEQ0(GC0308_BLOCK_EN2, 0xfa),
> + REG_SEQ0(GC0308_AAAA_EN, 0x57),
> + REG_SEQ0(GC0308_OUT_FORMAT, 0xa2), /* YCbYCr */
> + REG_SEQ0(GC0308_OUT_EN, 0x0f),
> + REG_SEQ0(GC0308_SYNC_MODE, 0x03),
> + REG_SEQ0(GC0308_CLK_DIV_MODE, 0x00),
> + REG_SEQ0(GC0308_DEBUG_MODE1, 0x0a),
> + REG_SEQ0(GC0308_DEBUG_MODE2, 0x00),
> + REG_SEQ0(GC0308_DEBUG_MODE3, 0x01),
> + REG_SEQ0(GC0308_BLK_MODE, 0xf7),
> + REG_SEQ0(GC0308_BLK_LIMIT_VAL, 0x50),
> + REG_SEQ0(GC0308_GLOBAL_OFF, 0x00),
> + REG_SEQ0(GC0308_CURRENT_R_OFF, 0x28),
> + REG_SEQ0(GC0308_CURRENT_G_OFF, 0x2a),
> + REG_SEQ0(GC0308_CURRENT_B_OFF, 0x28),
> + REG_SEQ0(GC0308_EXP_RATE_DARKC, 0x04),
> + REG_SEQ0(GC0308_OFF_SUBMODE, 0x20),
> + REG_SEQ0(GC0308_DARKC_SUBMODE, 0x20),
> + REG_SEQ0(GC0308_MANUAL_G1_OFF, 0x00),
> + REG_SEQ0(GC0308_MANUAL_R1_OFF, 0x00),
> + REG_SEQ0(GC0308_MANUAL_B2_OFF, 0x00),
> + REG_SEQ0(GC0308_MANUAL_G2_OFF, 0x00),
> + REG_SEQ0(GC0308_GLOBAL_GAIN, 0x14),
> + REG_SEQ0(GC0308_AUTO_POSTGAIN, 0x41),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_G1, 0x80),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_R, 0x80),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_B, 0x80),
> + REG_SEQ0(GC0308_CHANNEL_GAIN_G2, 0x80),
> + REG_SEQ0(GC0308_LSC_RED_B2, 0x20),
> + REG_SEQ0(GC0308_LSC_GREEN_B2, 0x20),
> + REG_SEQ0(GC0308_LSC_BLUE_B2, 0x20),
> + REG_SEQ0(GC0308_LSC_RED_B4, 0x14),
> + REG_SEQ0(GC0308_LSC_GREEN_B4, 0x10),
> + REG_SEQ0(GC0308_LSC_BLUE_B4, 0x14),
> + REG_SEQ0(GC0308_LSC_ROW_CENTER, 0x3c),
> + REG_SEQ0(GC0308_LSC_COL_CENTER, 0x50),
> + REG_SEQ0(GC0308_LSC_DEC_LVL1, 0x12),
> + REG_SEQ0(GC0308_LSC_DEC_LVL2, 0x1a),
> + REG_SEQ0(GC0308_LSC_DEC_LVL3, 0x24),
> + REG_SEQ0(GC0308_DN_MODE_EN, 0x07),
> + REG_SEQ0(GC0308_DN_MODE_RATIO, 0x15),
> + REG_SEQ0(GC0308_DN_BILAT_B_BASE, 0x08),
> + REG_SEQ0(GC0308_DN_BILAT_N_BASE, 0x03),
> + REG_SEQ0(GC0308_DD_DARK_BRIGHT_TH, 0xe8),
> + REG_SEQ0(GC0308_DD_FLAT_TH, 0x86),
> + REG_SEQ0(GC0308_DD_LIMIT, 0x82),
> + REG_SEQ0(GC0308_ASDE_GAIN_TRESH, 0x18),
> + REG_SEQ0(GC0308_ASDE_GAIN_MODE, 0x0f),
> + REG_SEQ0(GC0308_ASDE_DN_SLOPE, 0x00),
> + REG_SEQ0(GC0308_ASDE_DD_BRIGHT, 0x5f),
> + REG_SEQ0(GC0308_ASDE_DD_LIMIT, 0x8f),
> + REG_SEQ0(GC0308_ASDE_AUTO_EE1, 0x55),
> + REG_SEQ0(GC0308_ASDE_AUTO_EE2, 0x38),
> + REG_SEQ0(GC0308_ASDE_AUTO_SAT_DEC_SLOPE, 0x15),
> + REG_SEQ0(GC0308_ASDE_AUTO_SAT_LOW_LIMIT, 0x33),
> + REG_SEQ0(GC0308_EEINTP_MODE_1, 0xdc),
> + REG_SEQ0(GC0308_EEINTP_MODE_2, 0x00),
> + REG_SEQ0(GC0308_DIRECTION_TH1, 0x02),
> + REG_SEQ0(GC0308_DIRECTION_TH2, 0x3f),
> + REG_SEQ0(GC0308_DIFF_HV_TI_TH, 0x02),
> + REG_SEQ0(GC0308_EDGE12_EFFECT, 0x38),
> + REG_SEQ0(GC0308_EDGE_POS_RATIO, 0x88),
> + REG_SEQ0(GC0308_EDGE1_MINMAX, 0x81),
> + REG_SEQ0(GC0308_EDGE2_MINMAX, 0x81),
> + REG_SEQ0(GC0308_EDGE12_TH, 0x22),
> + REG_SEQ0(GC0308_EDGE_MAX, 0xff),
> + REG_SEQ0(GC0308_CC_MATRIX_C11, 0x48),
> + REG_SEQ0(GC0308_CC_MATRIX_C12, 0x02),
> + REG_SEQ0(GC0308_CC_MATRIX_C13, 0x07),
> + REG_SEQ0(GC0308_CC_MATRIX_C21, 0xe0),
> + REG_SEQ0(GC0308_CC_MATRIX_C22, 0x40),
> + REG_SEQ0(GC0308_CC_MATRIX_C23, 0xf0),
> + REG_SEQ0(GC0308_SATURATION_CB, 0x40),
> + REG_SEQ0(GC0308_SATURATION_CR, 0x40),
> + REG_SEQ0(GC0308_LUMA_CONTRAST, 0x40),
> + REG_SEQ0(GC0308_SKIN_CB_CENTER, 0xe0),
> + REG_SEQ0(GC0308_EDGE_DEC_SA, 0x38),
> + REG_SEQ0(GC0308_AUTO_GRAY_MODE, 0x36),
> + REG_SEQ0(GC0308_AEC_MODE1, 0xcb),
> + REG_SEQ0(GC0308_AEC_MODE2, 0x10),
> + REG_SEQ0(GC0308_AEC_MODE3, 0x90),
> + REG_SEQ0(GC0308_AEC_TARGET_Y, 0x48),
> + REG_SEQ0(GC0308_AEC_HIGH_LOW_RANGE, 0xf2),
> + REG_SEQ0(GC0308_AEC_IGNORE, 0x16),
> + REG_SEQ0(GC0308_AEC_SLOW_MARGIN, 0x92),
> + REG_SEQ0(GC0308_AEC_FAST_MARGIN, 0xa5),
> + REG_SEQ0(GC0308_AEC_I_FRAMES, 0x23),
> + REG_SEQ0(GC0308_AEC_R_OFFSET, 0x00),
> + REG_SEQ0(GC0308_AEC_GB_OFFSET, 0x00),
> + REG_SEQ0(GC0308_AEC_I_STOP_L_MARGIN, 0x09),
> + REG_SEQ0(GC0308_EXP_MIN_L, 0x04),
> + REG_SEQ0(GC0308_MAX_POST_DF_GAIN, 0xa0),
> + REG_SEQ0(GC0308_MAX_PRE_DG_GAIN, 0x40),
> + REG_SEQ0(GC0308_ABB_MODE, 0x03),
> + REG_SEQ0(GC0308_GAMMA_OUT0, 0x10),
> + REG_SEQ0(GC0308_GAMMA_OUT1, 0x20),
> + REG_SEQ0(GC0308_GAMMA_OUT2, 0x38),
> + REG_SEQ0(GC0308_GAMMA_OUT3, 0x4e),
> + REG_SEQ0(GC0308_GAMMA_OUT4, 0x63),
> + REG_SEQ0(GC0308_GAMMA_OUT5, 0x76),
> + REG_SEQ0(GC0308_GAMMA_OUT6, 0x87),
> + REG_SEQ0(GC0308_GAMMA_OUT7, 0xa2),
> + REG_SEQ0(GC0308_GAMMA_OUT8, 0xb8),
> + REG_SEQ0(GC0308_GAMMA_OUT9, 0xca),
> + REG_SEQ0(GC0308_GAMMA_OUT10, 0xd8),
> + REG_SEQ0(GC0308_GAMMA_OUT11, 0xe3),
> + REG_SEQ0(GC0308_GAMMA_OUT12, 0xeb),
> + REG_SEQ0(GC0308_GAMMA_OUT13, 0xf0),
> + REG_SEQ0(GC0308_GAMMA_OUT14, 0xf8),
> + REG_SEQ0(GC0308_GAMMA_OUT15, 0xfd),
> + REG_SEQ0(GC0308_GAMMA_OUT16, 0xff),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT0, 0x00),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT1, 0x10),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT2, 0x1c),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT3, 0x30),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT4, 0x43),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT5, 0x54),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT6, 0x65),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT7, 0x75),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT8, 0x93),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT9, 0xb0),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT10, 0xcb),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT11, 0xe6),
> + REG_SEQ0(GC0308_Y_GAMMA_OUT12, 0xff),
> + REG_SEQ0(GC0308_ABS_RANGE_COMP, 0x02),
> + REG_SEQ0(GC0308_ABS_STOP_MARGIN, 0x01),
> + REG_SEQ0(GC0308_Y_S_COMP, 0x02),
> + REG_SEQ0(GC0308_Y_STRETCH_LIMIT, 0x30),
> + REG_SEQ0(GC0308_BIG_WIN_X0, 0x12),
> + REG_SEQ0(GC0308_BIG_WIN_Y0, 0x0a),
> + REG_SEQ0(GC0308_BIG_WIN_X1, 0x9f),
> + REG_SEQ0(GC0308_BIG_WIN_Y1, 0x78),
> + REG_SEQ0(GC0308_AWB_RGB_HIGH_LOW, 0xf5),
> + REG_SEQ0(GC0308_AWB_Y_TO_C_DIFF2, 0x20),
> + REG_SEQ0(GC0308_AWB_C_MAX, 0x10),
> + REG_SEQ0(GC0308_AWB_C_INTER, 0x08),
> + REG_SEQ0(GC0308_AWB_C_INTER2, 0x20),
> + REG_SEQ0(GC0308_AWB_C_MAX_BIG, 0x0a),
> + REG_SEQ0(GC0308_AWB_NUMBER_LIMIT, 0xa0),
> + REG_SEQ0(GC0308_KWIN_RATIO, 0x60),
> + REG_SEQ0(GC0308_KWIN_THD, 0x08),
> + REG_SEQ0(GC0308_SMALL_WIN_WIDTH_STEP, 0x44),
> + REG_SEQ0(GC0308_SMALL_WIN_HEIGHT_STEP, 0x32),
> + REG_SEQ0(GC0308_AWB_YELLOW_TH, 0x41),
> + REG_SEQ0(GC0308_AWB_MODE, 0x37),
> + REG_SEQ0(GC0308_AWB_ADJUST_SPEED, 0x22),
> + REG_SEQ0(GC0308_AWB_EVERY_N, 0x19),
> + REG_SEQ0(0x114, 0x44), /* AWB set1 */
> + REG_SEQ0(0x115, 0x44), /* AWB set1 */
> + REG_SEQ0(0x116, 0xc2), /* AWB set1 */
> + REG_SEQ0(0x117, 0xa8), /* AWB set1 */
> + REG_SEQ0(0x118, 0x18), /* AWB set1 */
> + REG_SEQ0(0x119, 0x50), /* AWB set1 */
> + REG_SEQ0(0x11a, 0xd8), /* AWB set1 */
> + REG_SEQ0(0x11b, 0xf5), /* AWB set1 */
> + REG_SEQ0(0x170, 0x40), /* AWB set2 */
> + REG_SEQ0(0x171, 0x58), /* AWB set2 */
> + REG_SEQ0(0x172, 0x30), /* AWB set2 */
> + REG_SEQ0(0x173, 0x48), /* AWB set2 */
> + REG_SEQ0(0x174, 0x20), /* AWB set2 */
> + REG_SEQ0(0x175, 0x60), /* AWB set2 */
> + REG_SEQ0(0x177, 0x20), /* AWB set2 */
> + REG_SEQ0(0x178, 0x32), /* AWB set2 */
> + REG_SEQ0(0x130, 0x03), /* undocumented */
> + REG_SEQ0(0x131, 0x40), /* undocumented */
> + REG_SEQ0(0x132, 0x10), /* undocumented */
> + REG_SEQ0(0x133, 0xe0), /* undocumented */
> + REG_SEQ0(0x134, 0xe0), /* undocumented */
> + REG_SEQ0(0x135, 0x00), /* undocumented */
> + REG_SEQ0(0x136, 0x80), /* undocumented */
> + REG_SEQ0(0x137, 0x00), /* undocumented */
> + REG_SEQ0(0x138, 0x04), /* undocumented */
> + REG_SEQ0(0x139, 0x09), /* undocumented */
> + REG_SEQ0(0x13a, 0x12), /* undocumented */
> + REG_SEQ0(0x13b, 0x1c), /* undocumented */
> + REG_SEQ0(0x13c, 0x28), /* undocumented */
> + REG_SEQ0(0x13d, 0x31), /* undocumented */
> + REG_SEQ0(0x13e, 0x44), /* undocumented */
> + REG_SEQ0(0x13f, 0x57), /* undocumented */
> + REG_SEQ0(0x140, 0x6c), /* undocumented */
> + REG_SEQ0(0x141, 0x81), /* undocumented */
> + REG_SEQ0(0x142, 0x94), /* undocumented */
> + REG_SEQ0(0x143, 0xa7), /* undocumented */
> + REG_SEQ0(0x144, 0xb8), /* undocumented */
> + REG_SEQ0(0x145, 0xd6), /* undocumented */
> + REG_SEQ0(0x146, 0xee), /* undocumented */
> + REG_SEQ0(0x147, 0x0d), /* undocumented */
> + REG_SEQ0(0x162, 0xf7), /* undocumented */
> + REG_SEQ0(0x163, 0x68), /* undocumented */
> + REG_SEQ0(0x164, 0xd3), /* undocumented */
> + REG_SEQ0(0x165, 0xd3), /* undocumented */
> + REG_SEQ0(0x166, 0x60), /* undocumented */
> +};
> +
> +struct gc0308_colormode {
> + u8 special_effect;
> + u8 dbg_mode1;
> + u8 block_en1;
> + u8 aec_mode3;
> + u8 eeintp_mode_2;
> + u8 edge12_effect;
> + u8 luma_contrast;
> + u8 contrast_center;
> + u8 fixed_cb;
> + u8 fixed_cr;
> +};
> +
> +#define GC0308_COLOR_FX(reg_special_effect, reg_dbg_mode1, reg_block_en1, \
> + reg_aec_mode3, reg_eeintp_mode_2, reg_edge12_effect, \
> + reg_luma_contrast, reg_contrast_center, \
> + reg_fixed_cb, reg_fixed_cr) \
> + { \
> + .special_effect = reg_special_effect, \
> + .dbg_mode1 = reg_dbg_mode1, \
> + .block_en1 = reg_block_en1, \
> + .aec_mode3 = reg_aec_mode3, \
> + .eeintp_mode_2 = reg_eeintp_mode_2, \
> + .edge12_effect = reg_edge12_effect, \
> + .luma_contrast = reg_luma_contrast, \
> + .contrast_center = reg_contrast_center, \
> + .fixed_cb = reg_fixed_cb, \
> + .fixed_cr = reg_fixed_cr, \
> + }
> +
> +static const struct gc0308_colormode gc0308_colormodes[] = {
> + [V4L2_COLORFX_NONE] =
> + GC0308_COLOR_FX(0x00, 0x0a, 0xff, 0x90, 0x00,
> + 0x54, 0x3c, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_BW] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
> + 0x54, 0x40, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_SEPIA] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
> + 0x38, 0x40, 0x80, 0xd0, 0x28),
> + [V4L2_COLORFX_NEGATIVE] =
> + GC0308_COLOR_FX(0x01, 0x0a, 0xff, 0x90, 0x00,
> + 0x38, 0x40, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_EMBOSS] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01,
> + 0x38, 0x40, 0x80, 0x00, 0x00),
> + [V4L2_COLORFX_SKETCH] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x10, 0x80,
> + 0x38, 0x80, 0x90, 0x00, 0x00),
> + [V4L2_COLORFX_SKY_BLUE] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x00,
> + 0x38, 0x40, 0x80, 0x50, 0xe0),
> + [V4L2_COLORFX_GRASS_GREEN] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xff, 0x90, 0x01,
> + 0x38, 0x40, 0x80, 0xc0, 0xc0),
> + [V4L2_COLORFX_SKIN_WHITEN] =
> + GC0308_COLOR_FX(0x02, 0x0a, 0xbf, 0x10, 0x01,
> + 0x38, 0x60, 0x40, 0x00, 0x00),
> +};
> +
> +static const struct reg_sequence sensor_banding_50hz[] = {
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x78),
> + REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_2H, 0x03),
> + REG_SEQ0(GC0308_EXP_LVL_2L, 0x48),
> + REG_SEQ0(GC0308_EXP_LVL_3H, 0x04),
> + REG_SEQ0(GC0308_EXP_LVL_3L, 0xb0),
> + REG_SEQ0(GC0308_EXP_LVL_4H, 0x05),
> + REG_SEQ0(GC0308_EXP_LVL_4L, 0xa0),
> +};
> +
> +static const struct reg_sequence sensor_banding_60hz[] = {
> + REG_SEQ0(GC0308_ANTI_FLICKER_STEP_L, 0x64),
> + REG_SEQ0(GC0308_EXP_LVL_1H, 0x02),
> + REG_SEQ0(GC0308_EXP_LVL_1L, 0x58),
> + REG_SEQ0(GC0308_EXP_LVL_2H, 0x03),
> + REG_SEQ0(GC0308_EXP_LVL_2L, 0x84),
> + REG_SEQ0(GC0308_EXP_LVL_3H, 0x04),
> + REG_SEQ0(GC0308_EXP_LVL_3L, 0xb0),
> + REG_SEQ0(GC0308_EXP_LVL_4H, 0x05),
> + REG_SEQ0(GC0308_EXP_LVL_4L, 0xdc),
> +};
> +
> +static int gc0308_power_on(struct device *dev)
> +{
> + struct gc0308 *gc0308 = dev_get_drvdata(dev);
> + int ret;
> +
> + ret = clk_prepare_enable(gc0308->clk);
> + if (ret)
> + return ret;
> +
> + gpiod_set_value_cansleep(gc0308->pwdn_gpio, 0);
> + usleep_range(10000, 20000);
> +
> + gpiod_set_value_cansleep(gc0308->reset_gpio, 1);
> + msleep(100);
> + gpiod_set_value_cansleep(gc0308->reset_gpio, 0);
> + msleep(100);
> +
> + return 0;
> +}
> +
> +static int gc0308_power_off(struct device *dev)
> +{
> + struct gc0308 *gc0308 = dev_get_drvdata(dev);
> +
> + gpiod_set_value_cansleep(gc0308->pwdn_gpio, 1);
> + clk_disable_unprepare(gc0308->clk);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> +static int gc0308_g_register(struct v4l2_subdev *sd,
> + struct v4l2_dbg_register *reg)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> + int ret, val;
> +
> + ret = regmap_read(gc0308->regmap, reg->reg, &val);
> + if (ret)
> + return ret;
> +
> + reg->val = val;
> + return 0;
> +}
> +
> +static int gc0308_s_register(struct v4l2_subdev *sd,
> + const struct v4l2_dbg_register *reg)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + return regmap_write(gc0308->regmap, reg->reg, reg->val);
> +}
> +#endif
> +
> +static int gc0308_s_format(struct gc0308 *gc0308)
> +{
> + u32 i;
> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_formats); i++) {
> + if (gc0308->format.code != gc0308_formats[i].code)
> + continue;
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_OUT_FORMAT, GENMASK(4, 0),
> + gc0308_formats[i].regval);
> + }
> +
> + return -EINVAL;
> +}
> +
> +static int gc0308_set_exposure(struct gc0308 *gc0308, enum gc0308_exp_val exp)
> +{
> + const struct gc0308_exposure *regs = &gc0308_exposure_values[exp];
> + struct reg_sequence exposure_reg_seq[] = {
> + REG_SEQ0(GC0308_LUMA_OFFSET, regs->luma_offset),
> + REG_SEQ0(GC0308_AEC_TARGET_Y, regs->aec_target_y),
> + };
> +
> + return regmap_multi_reg_write(gc0308->regmap,
> + exposure_reg_seq, ARRAY_SIZE(exposure_reg_seq));
> +}
> +
> +static int gc0308_set_awb_mode(struct gc0308 *gc0308,
> + enum v4l2_auto_n_preset_white_balance val)
> +{
> + const struct gc0308_awb_gains *regs = &gc0308_awb_gains[val];
> + struct reg_sequence awb_reg_seq[] = {
> + REG_SEQ0(GC0308_AWB_R_GAIN, regs->r),
> + REG_SEQ0(GC0308_AWB_G_GAIN, regs->g),
> + REG_SEQ0(GC0308_AWB_B_GAIN, regs->b),
> + };
> + int ret;
> +
> + ret = regmap_update_bits(gc0308->regmap, GC0308_AAAA_EN,
> + BIT(1), val == V4L2_WHITE_BALANCE_AUTO);
> + if (ret)
> + return ret;
> +
> + return regmap_multi_reg_write(gc0308->regmap,
> + awb_reg_seq, ARRAY_SIZE(awb_reg_seq));
> +
> + return 0;
> +}
> +
> +static int gc0308_set_colormode(struct gc0308 *gc0308, enum v4l2_colorfx mode)
> +{
> + const struct gc0308_colormode *regs = &gc0308_colormodes[mode];
> + struct reg_sequence colormode_reg_seq[] = {
> + REG_SEQ0(GC0308_SPECIAL_EFFECT, regs->special_effect),
> + REG_SEQ0(GC0308_DEBUG_MODE1, regs->dbg_mode1),
> + REG_SEQ0(GC0308_BLOCK_EN1, regs->block_en1),
> + REG_SEQ0(GC0308_AEC_MODE3, regs->aec_mode3),
> + REG_SEQ0(GC0308_EEINTP_MODE_2, regs->eeintp_mode_2),
> + REG_SEQ0(GC0308_EDGE12_EFFECT, regs->edge12_effect),
> + REG_SEQ0(GC0308_LUMA_CONTRAST, regs->luma_contrast),
> + REG_SEQ0(GC0308_CONTRAST_CENTER, regs->contrast_center),
> + REG_SEQ0(GC0308_FIXED_CB, regs->fixed_cb),
> + REG_SEQ0(GC0308_FIXED_CR, regs->fixed_cr),
> + };
> +
> + return regmap_multi_reg_write(gc0308->regmap,
> + colormode_reg_seq, ARRAY_SIZE(colormode_reg_seq));
> +}
> +
> +static int _gc0308_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl);
> + uint8_t flipval = ctrl->val ? 0xff : 0x00;
> +
> + switch (ctrl->id) {
> + case V4L2_CID_VFLIP:
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_CISCTL_MODE1, BIT(1), flipval);
> + case V4L2_CID_HFLIP:
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_CISCTL_MODE1, BIT(0), flipval);
> + case V4L2_CID_AUTO_WHITE_BALANCE:
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_AAAA_EN, BIT(1), flipval);
> + case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
> + if (ctrl->val < 0 || ctrl->val > V4L2_WHITE_BALANCE_CLOUDY)
> + return -EINVAL;
> + return gc0308_set_awb_mode(gc0308, ctrl->val);
> + case V4L2_CID_POWER_LINE_FREQUENCY:
> + switch (ctrl->val) {
> + case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
> + return regmap_multi_reg_write(gc0308->regmap,
> + sensor_banding_60hz,
> + ARRAY_SIZE(sensor_banding_60hz));
> + case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
> + default:
> + return regmap_multi_reg_write(gc0308->regmap,
> + sensor_banding_50hz,
> + ARRAY_SIZE(sensor_banding_50hz));
> + }
> + case V4L2_CID_COLORFX:
> + if (ctrl->val < 0 || ctrl->val >= ARRAY_SIZE(gc0308_colormodes))
> + return -EINVAL;
> + return gc0308_set_colormode(gc0308, ctrl->val);
> + case V4L2_CID_TEST_PATTERN:
> + if (ctrl->val < 0 || ctrl->val > 2)
> + return -EINVAL;
> + return regmap_update_bits(gc0308->regmap,
> + GC0308_DEBUG_MODE2, GENMASK(1, 0), ctrl->val);
> + case V4L2_CID_EXPOSURE:
> + if (ctrl->val < -4 || ctrl->val > 4)
> + return -EINVAL;
> + return gc0308_set_exposure(gc0308, ctrl->val + 4);
> + }
> +
> + return -EINVAL;
> +}
> +
> +static int gc0308_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> + struct gc0308 *gc0308 = container_of(ctrl->handler, struct gc0308, hdl);
> + int ret;
> +
> + ret = pm_runtime_resume_and_get(gc0308->dev);
> + if (ret < 0)
> + return ret;
> +
> + ret = _gc0308_s_ctrl(ctrl);
> +
> + pm_runtime_put(gc0308->dev);
> +
> + if (ret)
> + dev_err(gc0308->dev, "s_ctrl failed: %d\n", ret);
> +
> + return ret;
> +}
> +
> +
> +static const struct v4l2_ctrl_ops gc0308_ctrl_ops = {
> + .s_ctrl = gc0308_s_ctrl,
> +};
> +
> +static const struct v4l2_subdev_core_ops gc0308_core_ops = {
> + .log_status = v4l2_ctrl_subdev_log_status,
> + .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
> + .unsubscribe_event = v4l2_event_subdev_unsubscribe,
> +#ifdef CONFIG_VIDEO_ADV_DEBUG
> + .g_register = gc0308_g_register,
> + .s_register = gc0308_s_register,
> +#endif
> +};
> +
> +static int gc0308_enum_mbus_code(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_mbus_code_enum *code)
> +{
> + if (code->index >= ARRAY_SIZE(gc0308_formats))
> + return -EINVAL;
> +
> + code->code = gc0308_formats[code->index].code;
> +
> + return 0;
> +}
> +
> +static int gc0308_enum_frame_size(struct v4l2_subdev *subdev,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_frame_size_enum *fse)
> +{
> + if (fse->pad || fse->index >= ARRAY_SIZE(gc0308_frame_sizes))
> + return -EINVAL;
> +
> + fse->min_width = gc0308_frame_sizes[fse->index].width;
> + fse->max_width = gc0308_frame_sizes[fse->index].width;
> + fse->min_height = gc0308_frame_sizes[fse->index].height;
> + fse->max_height = gc0308_frame_sizes[fse->index].height;
> +
> + return 0;
> +}
> +
> +static int gc0308_get_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_format *fmt)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + mutex_lock(&gc0308->lock);
> + fmt->format = gc0308->format;
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static int gc0308_set_format(struct v4l2_subdev *sd,
> + struct v4l2_subdev_state *sd_state,
> + struct v4l2_subdev_format *format)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> + int format_idx = -1;
> + unsigned int best_fit = ~0L;
> + unsigned int idx = 0;
> + unsigned int i;
> +
> + mutex_lock(&gc0308->lock);
> + if (gc0308->streaming) {
> + mutex_unlock(&gc0308->lock);
> + return -EBUSY;
> + }
> +
> + if (format->pad) {
> + mutex_unlock(&gc0308->lock);
> + dev_err(gc0308->dev, "invalid pad: %d\n", format->pad);
> + return -EINVAL;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_formats); i++) {
> + if (format->format.code == gc0308_formats[i].code) {
> + format_idx = i;
> + break;
> + }
> + }
> + if (format_idx < 0) {
> + mutex_unlock(&gc0308->lock);
> + dev_err(gc0308->dev, "unsupported format code: %08x\n",
> + format->format.code);
> + return -EINVAL;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_frame_sizes); i++) {
> + unsigned int width = gc0308_frame_sizes[i].width;
> + unsigned int height = gc0308_frame_sizes[i].height;
> + unsigned int fit = abs(width - format->format.width) +
> + abs(height - format->format.height);
> + if (fit < best_fit) {
> + best_fit = fit;
> + idx = i;
> +
> + if (fit == 0)
> + break;
> + }
> + }
> +
> + gc0308->format.width = gc0308_frame_sizes[idx].width;
> + gc0308->format.height = gc0308_frame_sizes[idx].height;
> + gc0308->format.code = gc0308_formats[format_idx].code;
> + gc0308->format.field = V4L2_FIELD_NONE;
> + gc0308->format.colorspace = V4L2_COLORSPACE_SRGB;
> +
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static int gc0308_get_mbus_config(struct v4l2_subdev *sd,
> + unsigned int pad,
> + struct v4l2_mbus_config *cfg)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + mutex_lock(&gc0308->lock);
> + cfg->type = V4L2_MBUS_PARALLEL,
> + cfg->bus.parallel.flags = V4L2_MBUS_PCLK_SAMPLE_RISING |
> + V4L2_MBUS_DATA_ACTIVE_HIGH |
> + V4L2_MBUS_MASTER;
> +
> + if (gc0308->mbus_config & V4L2_MBUS_VSYNC_ACTIVE_LOW)
> + cfg->bus.parallel.flags |= V4L2_MBUS_VSYNC_ACTIVE_LOW;
> + else
> + cfg->bus.parallel.flags |= V4L2_MBUS_VSYNC_ACTIVE_HIGH;
> +
> + if (gc0308->mbus_config & V4L2_MBUS_HSYNC_ACTIVE_LOW)
> + cfg->bus.parallel.flags |= V4L2_MBUS_HSYNC_ACTIVE_LOW;
> + else
> + cfg->bus.parallel.flags |= V4L2_MBUS_HSYNC_ACTIVE_HIGH;
> +
> +
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_pad_ops gc0308_pad_ops = {
> + .enum_mbus_code = gc0308_enum_mbus_code,
> + .enum_frame_size = gc0308_enum_frame_size,
> + .get_fmt = gc0308_get_format,
> + .set_fmt = gc0308_set_format,
> + .get_mbus_config = gc0308_get_mbus_config,
> +};
> +
> +static int gc0308_set_resolution(struct gc0308 *gc0308,
> + u8 subsample, u16 w, u16 h)
> +{
> + struct reg_sequence resolution_regs[] = {
> + REG_SEQ0(GC0308_SUBSAMPLE, subsample),
> + REG_SEQ0(GC0308_SUBMODE, 0x03),
> + REG_SEQ0(GC0308_SUB_ROW_N1, 0x00),
> + REG_SEQ0(GC0308_SUB_ROW_N2, 0x00),
> + REG_SEQ0(GC0308_SUB_COL_N1, 0x00),
> + REG_SEQ0(GC0308_SUB_COL_N2, 0x00),
> + REG_SEQ0(GC0308_CROP_WIN_MODE, 0x80),
> + REG_SEQ0(GC0308_CROP_WIN_Y1, 0x00),
> + REG_SEQ0(GC0308_CROP_WIN_X1, 0x00),
> + REG_SEQ0(GC0308_CROP_WIN_HEIGHTH, (h >> 8) & 0xFF),
> + REG_SEQ0(GC0308_CROP_WIN_HEIGHTL, (h >> 0) & 0xFF),
> + REG_SEQ0(GC0308_CROP_WIN_WIDTHH, (w >> 8) & 0xFF),
> + REG_SEQ0(GC0308_CROP_WIN_WIDTHL, (w >> 0) & 0xFF),
> + };
> +
> + return regmap_multi_reg_write(gc0308->regmap, resolution_regs,
> + ARRAY_SIZE(resolution_regs));
> +}
> +
> +static int gc0308_start_stream(struct gc0308 *gc0308)
> +{
> + int ret, sync_mode;
> + u16 width = 0, height = 0;
> + u8 subsample = 0;
> + int i;
> +
> + ret = pm_runtime_resume_and_get(gc0308->dev);
> + if (ret < 0)
> + return ret;
> +
> + ret = regmap_multi_reg_write(gc0308->regmap, sensor_default_regs,
> + ARRAY_SIZE(sensor_default_regs));
> + if (ret) {
> + dev_err(gc0308->dev, "failed to write default regs\n");
> + goto disable_pm;
> + }
> +
> + ret = gc0308_s_format(gc0308);
> + if (ret) {
> + dev_err(gc0308->dev, "failed to set format\n");
> + goto disable_pm;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(gc0308_frame_sizes); i++) {
> + if (gc0308_frame_sizes[i].width == gc0308->format.width &&
> + gc0308_frame_sizes[i].height == gc0308->format.height) {
> + width = gc0308_frame_sizes[i].width;
> + height = gc0308_frame_sizes[i].height;
> + subsample = gc0308_frame_sizes[i].subsample;
> + }
> + }
> +
> + if (!width || !height) {
> + dev_err(gc0308->dev, "invalid resolution\n");
> + goto disable_pm;
> + }
> +
> + ret = gc0308_set_resolution(gc0308, subsample, width, height);
> + if (ret) {
> + dev_err(gc0308->dev, "failed to write resolution regs\n");
> + goto disable_pm;
> + }
> +
> + ret = __v4l2_ctrl_handler_setup(&gc0308->hdl);
> + if (ret) {
> + dev_err(gc0308->dev, "failed to setup controls\n");
> + goto disable_pm;
> + }
> +
> + /* HSYNC/VSYNC polarity */
> + sync_mode = 0x3;
> + if (gc0308->mbus_config & V4L2_MBUS_VSYNC_ACTIVE_LOW)
> + sync_mode &= ~BIT(0);
> + if (gc0308->mbus_config & V4L2_MBUS_HSYNC_ACTIVE_LOW)
> + sync_mode &= ~BIT(1);
> + ret = regmap_write(gc0308->regmap, GC0308_SYNC_MODE, sync_mode);
> + if (ret)
> + goto disable_pm;
> +
> + return 0;
> +
> +disable_pm:
> + pm_runtime_put(gc0308->dev);
> + return ret;
> +}
> +
> +static int gc0308_stop_stream(struct gc0308 *gc0308)
> +{
> + pm_runtime_put(gc0308->dev);
> + return 0;
> +}
> +
> +static int gc0308_s_stream(struct v4l2_subdev *sd, int enable)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> + int ret = 0;
> +
> + mutex_lock(&gc0308->lock);
> +
> + if (gc0308->streaming == enable)
> + goto exit;
> +
> + if (enable)
> + ret = gc0308_start_stream(gc0308);
> + else
> + ret = gc0308_stop_stream(gc0308);
> +
> + if (!ret)
> + gc0308->streaming = enable;
> +
> +exit:
> + mutex_unlock(&gc0308->lock);
> + return ret;
> +}
> +
> +static int gc0308_g_frame_interval(struct v4l2_subdev *sd,
> + struct v4l2_subdev_frame_interval *fi)
> +{
> + struct gc0308 *gc0308 = to_gc0308(sd);
> +
> + mutex_lock(&gc0308->lock);
> + fi->interval = gc0308->frame_interval;
> + mutex_unlock(&gc0308->lock);
> +
> + return 0;
> +}
> +
> +static const struct v4l2_subdev_video_ops gc0308_video_ops = {
> + .g_frame_interval = gc0308_g_frame_interval,
> + .s_stream = gc0308_s_stream,
> +};
> +
> +static const struct v4l2_subdev_ops gc0308_subdev_ops = {
> + .core = &gc0308_core_ops,
> + .pad = &gc0308_pad_ops,
> + .video = &gc0308_video_ops,
> +};
> +
> +static int gc0308_bus_config(struct gc0308 *gc0308)
> +{
> + struct device *dev = gc0308->dev;
> + struct v4l2_fwnode_endpoint bus_cfg = {
> + .bus_type = V4L2_MBUS_PARALLEL
> + };
> + struct fwnode_handle *ep;
> + int ret;
> +
> + ep = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
> + if (!ep)
> + return -EINVAL;
> +
> + ret = v4l2_fwnode_endpoint_parse(ep, &bus_cfg);
> + fwnode_handle_put(ep);
> + if (ret)
> + return ret;
> +
> + gc0308->mbus_config = bus_cfg.bus.parallel.flags;
> +
> + return 0;
> +}
> +
> +static const char * const gc0308_test_pattern_menu[] = {
> + "Disabled",
> + "Test Image 1",
> + "Test Image 2",
> +};
> +
> +static void gc0308_mutex_destroy(void *data)
> +{
> + struct gc0308 *gc0308 = data;
> +
> + mutex_destroy(&gc0308->lock);
> +}
> +
> +static int gc0308_probe(struct i2c_client *client)
> +{
> + struct device *dev = &client->dev;
> + struct gc0308 *gc0308;
> + int ret, regval;
> +
> + gc0308 = devm_kzalloc(dev, sizeof(*gc0308), GFP_KERNEL);
> + if (!gc0308)
> + return -ENOMEM;
> +
> + gc0308->dev = dev;
> + dev_set_drvdata(dev, gc0308);
> +
> + ret = gc0308_bus_config(gc0308);
> + if (ret)
> + return dev_err_probe(dev, ret, "failed to get bus config\n");
> +
> + gc0308->format.width = gc0308_frame_sizes[0].width;
> + gc0308->format.height = gc0308_frame_sizes[0].height;
> + gc0308->format.field = V4L2_FIELD_NONE;
> + gc0308->format.code = gc0308_formats[2].code;
> + gc0308->format.colorspace = V4L2_COLORSPACE_SRGB;
> + gc0308->frame_interval.numerator = 1;
> + gc0308->frame_interval.denominator = GC0308_FRAME_RATE;
> +
> + gc0308->clk = devm_clk_get_optional(dev, NULL);
> + if (IS_ERR(gc0308->clk))
> + return dev_err_probe(dev, PTR_ERR(gc0308->clk),
> + "could not get clk\n");
> +
> + ret = clk_set_rate(gc0308->clk, 24000000);
> + if (ret)
> + return dev_err_probe(dev, ret, "failed to set clock rate\n");
> +
> + gc0308->vdd = devm_regulator_get(dev, "vdd28");
> + if (IS_ERR(gc0308->vdd))
> + return dev_err_probe(dev, PTR_ERR(gc0308->vdd),
> + "failed to get vdd28 regulator\n");
> +
> + gc0308->pwdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);
> + if (IS_ERR(gc0308->pwdn_gpio))
> + return dev_err_probe(dev, PTR_ERR(gc0308->pwdn_gpio),
> + "failed to get powerdown gpio\n");
> +
> + gc0308->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
> + if (IS_ERR(gc0308->reset_gpio))
> + return dev_err_probe(dev, PTR_ERR(gc0308->reset_gpio),
> + "failed to get reset gpio\n");
> +
> + gc0308->regmap = devm_regmap_init_i2c(client, &gc0308_regmap_config);
> + if (IS_ERR(gc0308->regmap))
> + return dev_err_probe(dev, PTR_ERR(gc0308->regmap),
> + "failed to init regmap\n");
> +
> + mutex_init(&gc0308->lock);
> + ret = devm_add_action_or_reset(dev, gc0308_mutex_destroy, gc0308);
> + if (ret)
> + return ret;
> +
> + v4l2_i2c_subdev_init(&gc0308->sd, client, &gc0308_subdev_ops);
> + gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> + gc0308->sd.flags |= V4L2_SUBDEV_FL_HAS_EVENTS;
> +
> + v4l2_ctrl_handler_init(&gc0308->hdl, 8);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_VFLIP, 0, 1, 1, 0);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_HFLIP, 0, 1, 1, 0);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
> + v4l2_ctrl_new_std_menu_items(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(gc0308_test_pattern_menu) - 1,
> + 0, 0, gc0308_test_pattern_menu);
> + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
> + 8, ~0x14e, V4L2_WHITE_BALANCE_AUTO);
> + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_COLORFX, 8, 0, V4L2_COLORFX_NONE);
> + v4l2_ctrl_new_std_menu(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_POWER_LINE_FREQUENCY,
> + V4L2_CID_POWER_LINE_FREQUENCY_60HZ,
> + ~0x6, V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
> + v4l2_ctrl_new_std(&gc0308->hdl, &gc0308_ctrl_ops,
> + V4L2_CID_EXPOSURE, -4, 4, 1, 0);
> +
> + gc0308->hdl.lock = &gc0308->lock;
> + gc0308->sd.ctrl_handler = &gc0308->hdl;
> + if (gc0308->hdl.error) {
> + ret = gc0308->hdl.error;
> + return ret;
> + }
> +
> + gc0308->pad.flags = MEDIA_PAD_FL_SOURCE;
> + gc0308->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
> + ret = media_entity_pads_init(&gc0308->sd.entity, 1, &gc0308->pad);
> + if (ret < 0)
> + return ret;
> +
> + ret = gc0308_power_on(dev);
> + if (ret)
> + return ret;
> +
> + ret = regmap_read(gc0308->regmap, GC0308_CHIP_ID, &regval);
> + if (ret < 0)
> + return dev_err_probe(dev, ret, "failed to read chip ID\n");
> +
> + if (regval != 0x9b)
> + return dev_err_probe(dev, -EINVAL, "invalid chip ID (%02x)\n",
> + regval);
> +
> + ret = v4l2_async_register_subdev(&gc0308->sd);
> + if (ret)
> + return dev_err_probe(dev, ret, "failed to register v4l subdev\n");
> +
> + pm_runtime_set_active(dev);
> + pm_runtime_enable(dev);
> + pm_runtime_idle(dev);
> +
> + return 0;
> +}
> +
> +static void gc0308_remove(struct i2c_client *client)
> +{
> + struct gc0308 *gc0308 = i2c_get_clientdata(client);
> + struct device *dev = &client->dev;
> +
> + pm_runtime_get_sync(dev);
> +
> + v4l2_async_unregister_subdev(&gc0308->sd);
> + v4l2_ctrl_handler_free(&gc0308->hdl);
> +
> + pm_runtime_disable(dev);
> + pm_runtime_set_suspended(dev);
> + pm_runtime_put_noidle(dev);
> + gc0308_power_off(dev);
> +}
> +
> +static const struct dev_pm_ops gc0308_pm_ops = {
> + SET_RUNTIME_PM_OPS(gc0308_power_off, gc0308_power_on, NULL)
> +};
> +
> +static const struct of_device_id gc0308_of_match[] = {
> + { .compatible = "galaxycore,gc0308" },
> + { .compatible = "galaxycore,gc0309" },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, gc0308_of_match);
> +
> +static struct i2c_driver gc0308_i2c_driver = {
> + .driver = {
> + .name = "gc0308",
> + .pm = &gc0308_pm_ops,
> + .of_match_table = gc0308_of_match,
> + },
> + .probe = gc0308_probe,
> + .remove = gc0308_remove,
> +};
> +module_i2c_driver(gc0308_i2c_driver);
> +
> +MODULE_DESCRIPTION("GalaxyCore GC0308 Camera Driver");
> +MODULE_AUTHOR("Sebastian Reichel <[email protected]>");
> +MODULE_LICENSE("GPL");
> --
> 2.42.0
>