From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 7d45a432251a30ed0252655177e708229b163291 ]
Stop using half pixelclock for binned modes this fixes: 1. The exposure being twice as high for binned mods (due to the half clk) 2. The framerate being 15 fps instead of 30 fps
The original code with fixed per mode register lists did use half pixel clk, but this should be combined with using half for the VTS value too.
Using half VTS fixes the framerate issue, but this has the undesired side-effect of change the exposure ctrl range (half the range, double the amount of exposure per step).
Link: https://lore.kernel.org/r/20230604161406.69369-3-hdegoede@redhat.com
Signed-off-by: Hans de Goede hdegoede@redhat.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Signed-off-by: Mauro Carvalho Chehab mchehab@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/staging/media/atomisp/i2c/atomisp-ov2680.c | 8 +------- drivers/staging/media/atomisp/i2c/ov2680.h | 1 + 2 files changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2680.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2680.c index c079368019e87..3a6bc3e56b10e 100644 --- a/drivers/staging/media/atomisp/i2c/atomisp-ov2680.c +++ b/drivers/staging/media/atomisp/i2c/atomisp-ov2680.c @@ -239,27 +239,21 @@ static void ov2680_calc_mode(struct ov2680_device *sensor, int width, int height static int ov2680_set_mode(struct ov2680_device *sensor) { struct i2c_client *client = sensor->client; - u8 pll_div, unknown, inc, fmt1, fmt2; + u8 unknown, inc, fmt1, fmt2; int ret;
if (sensor->mode.binning) { - pll_div = 1; unknown = 0x23; inc = 0x31; fmt1 = 0xc2; fmt2 = 0x01; } else { - pll_div = 0; unknown = 0x21; inc = 0x11; fmt1 = 0xc0; fmt2 = 0x00; }
- ret = ov_write_reg8(client, 0x3086, pll_div); - if (ret) - return ret; - ret = ov_write_reg8(client, 0x370a, unknown); if (ret) return ret; diff --git a/drivers/staging/media/atomisp/i2c/ov2680.h b/drivers/staging/media/atomisp/i2c/ov2680.h index baf49eb0659e3..eed18d6943370 100644 --- a/drivers/staging/media/atomisp/i2c/ov2680.h +++ b/drivers/staging/media/atomisp/i2c/ov2680.h @@ -172,6 +172,7 @@ static struct ov2680_reg const ov2680_global_setting[] = { {0x3082, 0x45}, {0x3084, 0x09}, {0x3085, 0x04}, + {0x3086, 0x00}, {0x3503, 0x03}, {0x350b, 0x36}, {0x3600, 0xb4},