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| author | Jacopo Mondi <jacopo@jmondi.org> | 2022-11-04 17:24:45 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-11-25 11:43:22 +0300 |
| commit | 114df30420e5a773e9b15411af5c5b7988f715fb (patch) | |
| tree | f0557c9c34dd6c42f9ff1f2738913e1b7d5d4374 /drivers/media/i2c/ar0521.c | |
| parent | f79101354cd8dd3f1cf298fcdf350525bcc2e187 (diff) | |
| download | linux-114df30420e5a773e9b15411af5c5b7988f715fb.tar.xz | |
media: ar0521: Add V4L2_CID_ANALOG_GAIN
Add support for V4L2_CID_ANALOG_GAIN. The control programs the global
gain register which applies to all color channels.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media/i2c/ar0521.c')
| -rw-r--r-- | drivers/media/i2c/ar0521.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/media/i2c/ar0521.c b/drivers/media/i2c/ar0521.c index 45fcf3798ad2..20a87dde2289 100644 --- a/drivers/media/i2c/ar0521.c +++ b/drivers/media/i2c/ar0521.c @@ -35,6 +35,11 @@ #define AR0521_HEIGHT_BLANKING_MIN 38u /* must be even */ #define AR0521_TOTAL_WIDTH_MIN 2968u +#define AR0521_ANA_GAIN_MIN 0x00 +#define AR0521_ANA_GAIN_MAX 0x3f +#define AR0521_ANA_GAIN_STEP 0x01 +#define AR0521_ANA_GAIN_DEFAULT 0x00 + /* AR0521 registers */ #define AR0521_REG_VT_PIX_CLK_DIV 0x0300 #define AR0521_REG_FRAME_LENGTH_LINES 0x0340 @@ -50,6 +55,8 @@ #define AR0521_REG_RESET_RESTART BIT(1) #define AR0521_REG_RESET_INIT BIT(0) +#define AR0521_REG_ANA_GAIN_CODE_GLOBAL 0x3028 + #define AR0521_REG_GREEN1_GAIN 0x3056 #define AR0521_REG_BLUE_GAIN 0x3058 #define AR0521_REG_RED_GAIN 0x305A @@ -455,6 +462,10 @@ static int ar0521_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_VBLANK: ret = ar0521_set_geometry(sensor); break; + case V4L2_CID_ANALOGUE_GAIN: + ret = ar0521_write_reg(sensor, AR0521_REG_ANA_GAIN_CODE_GLOBAL, + ctrl->val); + break; case V4L2_CID_GAIN: case V4L2_CID_RED_BALANCE: case V4L2_CID_BLUE_BALANCE: @@ -498,6 +509,11 @@ static int ar0521_init_controls(struct ar0521_dev *sensor) /* We can use our own mutex for the ctrl lock */ hdl->lock = &sensor->lock; + /* Analog gain */ + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, + AR0521_ANA_GAIN_MIN, AR0521_ANA_GAIN_MAX, + AR0521_ANA_GAIN_STEP, AR0521_ANA_GAIN_DEFAULT); + /* Manual gain */ ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, 0, 511, 1, 0); ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE, |