Compute the binning registers based on the difference between
the mode width/height vs the crop width/height.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/media/i2c/imx355.c | 61 +++++++++++++++-------------------------------
 1 file changed, 19 insertions(+), 42 deletions(-)

diff --git a/drivers/media/i2c/imx355.c b/drivers/media/i2c/imx355.c
index 7aabd281cd3c..1010c32fe969 100644
--- a/drivers/media/i2c/imx355.c
+++ b/drivers/media/i2c/imx355.c
@@ -72,6 +72,10 @@
 #define IMX355_TEST_PATTERN_GRAY_COLOR_BARS	3
 #define IMX355_TEST_PATTERN_PN9			4
 
+#define IMX355_REG_BINNING_MODE		0x0900
+#define IMX355_REG_BINNING_TYPE		0x0901
+#define IMX355_REG_BINNING_WEIGHTING	0x0902
+
 /* Flip Control */
 #define IMX355_REG_ORIENTATION		0x0101
 
@@ -263,113 +267,71 @@ static const struct imx355_reg_list imx355_global_setting = {
 };
 
 static const struct imx355_reg mode_3268x2448_regs[] = {
-	{ 0x0900, 0x00 },
-	{ 0x0901, 0x11 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_3264x2448_regs[] = {
-	{ 0x0900, 0x00 },
-	{ 0x0901, 0x11 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_3280x2464_regs[] = {
-	{ 0x0900, 0x00 },
-	{ 0x0901, 0x11 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1940x1096_regs[] = {
-	{ 0x0900, 0x00 },
-	{ 0x0901, 0x11 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1936x1096_regs[] = {
-	{ 0x0900, 0x00 },
-	{ 0x0901, 0x11 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1924x1080_regs[] = {
-	{ 0x0900, 0x00 },
-	{ 0x0901, 0x11 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1920x1080_regs[] = {
-	{ 0x0900, 0x00 },
-	{ 0x0901, 0x11 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1640x1232_regs[] = {
-	{ 0x0900, 0x01 },
-	{ 0x0901, 0x22 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1640x922_regs[] = {
-	{ 0x0900, 0x01 },
-	{ 0x0901, 0x22 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1300x736_regs[] = {
-	{ 0x0900, 0x01 },
-	{ 0x0901, 0x22 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1296x736_regs[] = {
-	{ 0x0900, 0x01 },
-	{ 0x0901, 0x22 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1284x720_regs[] = {
-	{ 0x0900, 0x01 },
-	{ 0x0901, 0x22 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_1280x720_regs[] = {
-	{ 0x0900, 0x01 },
-	{ 0x0901, 0x22 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x00 },
 	{ 0x0701, 0x10 },
 };
 
 static const struct imx355_reg mode_820x616_regs[] = {
-	{ 0x0900, 0x01 },
-	{ 0x0901, 0x44 },
-	{ 0x0902, 0x00 },
 	{ 0x0700, 0x02 },
 	{ 0x0701, 0x78 },
 };
@@ -974,6 +936,7 @@ static int imx355_start_streaming(struct imx355 *imx355)
 {
 	const struct imx355_reg_list *reg_list;
 	const struct imx355_mode *mode;
+	u8 binning_mode;
 	int ret;
 
 	/* Global Setting */
@@ -1019,6 +982,20 @@ static int imx355_start_streaming(struct imx355 *imx355)
 	if (ret)
 		return ret;
 
+	binning_mode = ((mode->crop.width / mode->width) << 4) |
+			(mode->crop.height / mode->height);
+	ret = imx355_write_reg(imx355, IMX355_REG_BINNING_MODE, 1,
+			       binning_mode == 0x11 ? 0x00 : 0x01);
+	if (ret)
+		return ret;
+	ret = imx355_write_reg(imx355, IMX355_REG_BINNING_TYPE, 1,
+			       binning_mode);
+	if (ret)
+		return ret;
+	ret = imx355_write_reg(imx355, IMX355_REG_BINNING_WEIGHTING, 1, 0x00);
+	if (ret)
+		return ret;
+
 	/* Set PLL registers for the external clock frequency */
 	ret = imx355_write_reg(imx355, IMX355_REG_EXTCLK_FREQ, 2,
 			       imx355->clk_params->extclk_freq);

-- 
2.34.1