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From: Mikhail Rudenko <mike.rudenko@gmail.com>
To: linux-media@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Jacopo Mondi <jacopo@jmondi.org>,
	Tommaso Merciai <tomm.merciai@gmail.com>,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Mikhail Rudenko <mike.rudenko@gmail.com>
Subject: [PATCH v3 16/20] media: i2c: ov4689: Set timing registers programmatically
Date: Thu, 29 Feb 2024 19:53:29 +0300
Message-ID: <20240229165333.227484-17-mike.rudenko@gmail.com>
In-Reply-To: <20240229165333.227484-1-mike.rudenko@gmail.com>
References: <20240229165333.227484-1-mike.rudenko@gmail.com>
Precedence: bulk
MIME-Version: 1.0
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Set timing-related and BLC anchor registers via cci calls instead of
hardcoding them in the register table. This prepares the driver for
implementation of configurable analogue crop and binning. No
functional change intended.

Signed-off-by: Mikhail Rudenko <mike.rudenko@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/media/i2c/ov4689.c | 83 +++++++++++++++++++++++++++++++-------
 1 file changed, 68 insertions(+), 15 deletions(-)

diff --git a/drivers/media/i2c/ov4689.c b/drivers/media/i2c/ov4689.c
index cc8d9fa369e7..d34699f35270 100644
--- a/drivers/media/i2c/ov4689.c
+++ b/drivers/media/i2c/ov4689.c
@@ -41,6 +41,13 @@
 #define OV4689_DIG_GAIN_STEP		1
 #define OV4689_DIG_GAIN_DEFAULT		0x800
 
+#define OV4689_REG_H_CROP_START		CCI_REG16(0x3800)
+#define OV4689_REG_V_CROP_START		CCI_REG16(0x3802)
+#define OV4689_REG_H_CROP_END		CCI_REG16(0x3804)
+#define OV4689_REG_V_CROP_END		CCI_REG16(0x3806)
+#define OV4689_REG_H_OUTPUT_SIZE	CCI_REG16(0x3808)
+#define OV4689_REG_V_OUTPUT_SIZE	CCI_REG16(0x380a)
+
 #define OV4689_REG_HTS			CCI_REG16(0x380c)
 #define OV4689_HTS_DIVIDER		4
 #define OV4689_HTS_MAX			0x7fff
@@ -48,6 +55,9 @@
 #define OV4689_REG_VTS			CCI_REG16(0x380e)
 #define OV4689_VTS_MAX			0x7fff
 
+#define OV4689_REG_H_WIN_OFF		CCI_REG16(0x3810)
+#define OV4689_REG_V_WIN_OFF		CCI_REG16(0x3812)
+
 #define OV4689_REG_TIMING_FORMAT1	CCI_REG8(0x3820)
 #define OV4689_REG_TIMING_FORMAT2	CCI_REG8(0x3821)
 #define OV4689_TIMING_FLIP_MASK		GENMASK(2, 1)
@@ -56,6 +66,17 @@
 #define OV4689_TIMING_FLIP_BOTH		(OV4689_TIMING_FLIP_ARRAY |\
 					 OV4689_TIMING_FLIP_DIGITAL)
 
+#define OV4689_REG_ANCHOR_LEFT_START	CCI_REG16(0x4020)
+#define OV4689_ANCHOR_LEFT_START_DEF	576
+#define OV4689_REG_ANCHOR_LEFT_END	CCI_REG16(0x4022)
+#define OV4689_ANCHOR_LEFT_END_DEF	831
+#define OV4689_REG_ANCHOR_RIGHT_START	CCI_REG16(0x4024)
+#define OV4689_ANCHOR_RIGHT_START_DEF	1984
+#define OV4689_REG_ANCHOR_RIGHT_END	CCI_REG16(0x4026)
+#define OV4689_ANCHOR_RIGHT_END_DEF	2239
+
+#define OV4689_REG_VFIFO_CTRL_01	CCI_REG8(0x4601)
+
 #define OV4689_REG_WB_GAIN_RED		CCI_REG16(0x500c)
 #define OV4689_REG_WB_GAIN_BLUE		CCI_REG16(0x5010)
 #define OV4689_WB_GAIN_MIN		1
@@ -199,10 +220,6 @@ static const struct cci_reg_sequence ov4689_2688x1520_regs[] = {
 	{CCI_REG8(0x3798), 0x1b},
 
 	/* Timing control */
-	{CCI_REG8(0x3801), 0x08}, /* H_CROP_START_L h_crop_start[7:0] = 0x08 */
-	{CCI_REG8(0x3805), 0x97}, /* H_CROP_END_L h_crop_end[7:0] = 0x97 */
-	{CCI_REG8(0x3811), 0x08}, /* H_WIN_OFF_L h_win_off[7:0] = 0x08*/
-	{CCI_REG8(0x3813), 0x04}, /* V_WIN_OFF_L v_win_off[7:0] = 0x04 */
 	{CCI_REG8(0x3819), 0x01}, /* VSYNC_END_L vsync_end_point[7:0] = 0x01 */
 
 	/* OTP control */
@@ -218,22 +235,11 @@ static const struct cci_reg_sequence ov4689_2688x1520_regs[] = {
 	{CCI_REG8(0x401b), 0x00}, /* DEBUG_MODE */
 	{CCI_REG8(0x401d), 0x00}, /* DEBUG_MODE */
 	{CCI_REG8(0x401f), 0x00}, /* DEBUG_MODE */
-	{CCI_REG8(0x4020), 0x00}, /* ANCHOR_LEFT_START_H anchor_left_start[11:8] = 0 */
-	{CCI_REG8(0x4021), 0x10}, /* ANCHOR_LEFT_START_L anchor_left_start[7:0] = 0x10 */
-	{CCI_REG8(0x4022), 0x07}, /* ANCHOR_LEFT_END_H anchor_left_end[11:8] = 0x07 */
-	{CCI_REG8(0x4023), 0xcf}, /* ANCHOR_LEFT_END_L anchor_left_end[7:0] = 0xcf */
-	{CCI_REG8(0x4024), 0x09}, /* ANCHOR_RIGHT_START_H anchor_right_start[11:8] = 0x09 */
-	{CCI_REG8(0x4025), 0x60}, /* ANCHOR_RIGHT_START_L anchor_right_start[7:0] = 0x60 */
-	{CCI_REG8(0x4026), 0x09}, /* ANCHOR_RIGHT_END_H anchor_right_end[11:8] = 0x09 */
-	{CCI_REG8(0x4027), 0x6f}, /* ANCHOR_RIGHT_END_L anchor_right_end[7:0] = 0x6f */
 
 	/* ADC sync control */
 	{CCI_REG8(0x4500), 0x6c}, /* ADC_SYNC_CTRL */
 	{CCI_REG8(0x4503), 0x01}, /* ADC_SYNC_CTRL */
 
-	/* VFIFO */
-	{CCI_REG8(0x4601), 0xa7}, /* VFIFO_CTRL_01 r_vfifo_read_start[7:0] = 0xa7 */
-
 	/* Temperature monitor */
 	{CCI_REG8(0x4d00), 0x04}, /* TPM_CTRL_00 tmp_slope[15:8] = 0x04 */
 	{CCI_REG8(0x4d01), 0x42}, /* TPM_CTRL_01 tmp_slope[7:0] = 0x42 */
@@ -406,6 +412,41 @@ static int ov4689_get_selection(struct v4l2_subdev *sd,
 	return -EINVAL;
 }
 
+static int ov4689_setup_timings(struct ov4689 *ov4689)
+{
+	const struct ov4689_mode *mode = ov4689->cur_mode;
+	struct regmap *rm = ov4689->regmap;
+	int ret = 0;
+
+	cci_write(rm, OV4689_REG_H_CROP_START, 8, &ret);
+	cci_write(rm, OV4689_REG_V_CROP_START, 8, &ret);
+	cci_write(rm, OV4689_REG_H_CROP_END, 2711, &ret);
+	cci_write(rm, OV4689_REG_V_CROP_END, 1531, &ret);
+
+	cci_write(rm, OV4689_REG_H_OUTPUT_SIZE, mode->width, &ret);
+	cci_write(rm, OV4689_REG_V_OUTPUT_SIZE, mode->height, &ret);
+
+	cci_write(rm, OV4689_REG_H_WIN_OFF, 8, &ret);
+	cci_write(rm, OV4689_REG_V_WIN_OFF, 4, &ret);
+
+	cci_write(rm, OV4689_REG_VFIFO_CTRL_01, 167, &ret);
+
+	return ret;
+}
+
+static int ov4689_setup_blc_anchors(struct ov4689 *ov4689)
+{
+	struct regmap *rm = ov4689->regmap;
+	int ret = 0;
+
+	cci_write(rm, OV4689_REG_ANCHOR_LEFT_START, 16, &ret);
+	cci_write(rm, OV4689_REG_ANCHOR_LEFT_END, 1999, &ret);
+	cci_write(rm, OV4689_REG_ANCHOR_RIGHT_START, 2400, &ret);
+	cci_write(rm, OV4689_REG_ANCHOR_RIGHT_END, 2415, &ret);
+
+	return ret;
+}
+
 static int ov4689_s_stream(struct v4l2_subdev *sd, int on)
 {
 	struct ov4689 *ov4689 = to_ov4689(sd);
@@ -429,6 +470,18 @@ static int ov4689_s_stream(struct v4l2_subdev *sd, int on)
 			goto unlock_and_return;
 		}
 
+		ret = ov4689_setup_timings(ov4689);
+		if (ret) {
+			pm_runtime_put(dev);
+			goto unlock_and_return;
+		}
+
+		ret = ov4689_setup_blc_anchors(ov4689);
+		if (ret) {
+			pm_runtime_put(dev);
+			goto unlock_and_return;
+		}
+
 		ret = __v4l2_ctrl_handler_setup(&ov4689->ctrl_handler);
 		if (ret) {
 			pm_runtime_put(dev);
-- 
2.43.0