[PATCH v2 09/13] media: i2c: imx290: VMAX is mode dependent

[Dave Stevenson <dave.stevenson@raspberrypi.com>]

The default VMAX for 60fps in 720p mode is 750 according to
the datasheet, however the driver always left it at 1125
thereby stopping 60fps being achieved.

Make VMAX (and therefore V4L2_CID_VBLANK) mode dependent so
that 720p60 can be achieved.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/media/i2c/imx290.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c
index 403bd7de875e..6235021a8d24 100644
--- a/drivers/media/i2c/imx290.c
+++ b/drivers/media/i2c/imx290.c
@@ -110,8 +110,6 @@
 /* Number of lines by which exposure must be less than VMAX) */
 #define IMX290_EXPOSURE_OFFSET				2
 
-#define IMX290_VMAX_DEFAULT				1125
-
 #define IMX290_PIXEL_RATE				148500000
 
 /*
@@ -189,6 +187,7 @@ struct imx290_mode {
 	u32 width;
 	u32 height;
 	u32 hmax_min;
+	u32 vmax_min;
 	u8 link_freq_index;
 
 	const struct imx290_regval *data;
@@ -432,6 +431,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = {
 		.width = 1920,
 		.height = 1080,
 		.hmax_min = 2200,
+		.vmax_min = 1125,
 		.link_freq_index = FREQ_INDEX_1080P,
 		.data = imx290_1080p_settings,
 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
@@ -440,6 +440,7 @@ static const struct imx290_mode imx290_modes_2lanes[] = {
 		.width = 1280,
 		.height = 720,
 		.hmax_min = 3300,
+		.vmax_min = 750,
 		.link_freq_index = FREQ_INDEX_720P,
 		.data = imx290_720p_settings,
 		.data_size = ARRAY_SIZE(imx290_720p_settings),
@@ -451,6 +452,7 @@ static const struct imx290_mode imx290_modes_4lanes[] = {
 		.width = 1920,
 		.height = 1080,
 		.hmax_min = 2200,
+		.vmax_min = 1125,
 		.link_freq_index = FREQ_INDEX_1080P,
 		.data = imx290_1080p_settings,
 		.data_size = ARRAY_SIZE(imx290_1080p_settings),
@@ -459,6 +461,7 @@ static const struct imx290_mode imx290_modes_4lanes[] = {
 		.width = 1280,
 		.height = 720,
 		.hmax_min = 3300,
+		.vmax_min = 750,
 		.link_freq_index = FREQ_INDEX_720P,
 		.data = imx290_720p_settings,
 		.data_size = ARRAY_SIZE(imx290_720p_settings),
@@ -779,7 +782,7 @@ static void imx290_ctrl_update(struct imx290 *imx290,
 {
 	unsigned int hblank_min = mode->hmax_min - mode->width;
 	unsigned int hblank_max = IMX290_HMAX_MAX - mode->width;
-	unsigned int vblank_min = IMX290_VMAX_DEFAULT - mode->height;
+	unsigned int vblank_min = mode->vmax_min - mode->height;
 	unsigned int vblank_max = IMX290_VMAX_MAX - mode->height;
 
 	__v4l2_ctrl_s_ctrl(imx290->link_freq, mode->link_freq_index);
-- 
2.34.1