diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2020-09-24 01:55:00 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-01-12 19:29:01 +0300 |
| commit | 57801b6aa72bee123503fc4630ef4da1b88fca00 (patch) | |
| tree | 4cd32ec5799fc4a0f3560bf96f9f63d5928b0bb5 /drivers | |
| parent | a75210a62b81ce8cfbe9e10e29880d870ce94b8d (diff) | |
| download | linux-57801b6aa72bee123503fc4630ef4da1b88fca00.tar.xz | |
media: ccs: Add support for alternate analogue global gain
The CCS spec defines an alternative implementation for global analogue
gain. Add support for that in the driver.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index c51197318c3a..7591a52a41a4 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -673,6 +673,17 @@ static int ccs_set_ctrl(struct v4l2_ctrl *ctrl) break; + case V4L2_CID_CCS_ANALOGUE_LINEAR_GAIN: + rval = ccs_write(sensor, ANALOG_LINEAR_GAIN_GLOBAL, ctrl->val); + + break; + + case V4L2_CID_CCS_ANALOGUE_EXPONENTIAL_GAIN: + rval = ccs_write(sensor, ANALOG_EXPONENTIAL_GAIN_GLOBAL, + ctrl->val); + + break; + case V4L2_CID_DIGITAL_GAIN: if (CCS_LIM(sensor, DIGITAL_GAIN_CAPABILITY) == CCS_DIGITAL_GAIN_CAPABILITY_GLOBAL) { @@ -820,6 +831,50 @@ static int ccs_init_controls(struct ccs_sensor *sensor) 1U), CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN)); } + break; + + case CCS_ANALOG_GAIN_CAPABILITY_ALTERNATE_GLOBAL: { + struct { + const char *name; + u32 id; + u16 min, max, step; + } const gain_ctrls[] = { + { + "Analogue Linear Gain", + V4L2_CID_CCS_ANALOGUE_LINEAR_GAIN, + CCS_LIM(sensor, ANALOG_LINEAR_GAIN_MIN), + CCS_LIM(sensor, ANALOG_LINEAR_GAIN_MAX), + max(CCS_LIM(sensor, + ANALOG_LINEAR_GAIN_STEP_SIZE), + 1U), + }, + { + "Analogue Exponential Gain", + V4L2_CID_CCS_ANALOGUE_EXPONENTIAL_GAIN, + CCS_LIM(sensor, ANALOG_EXPONENTIAL_GAIN_MIN), + CCS_LIM(sensor, ANALOG_EXPONENTIAL_GAIN_MAX), + max(CCS_LIM(sensor, + ANALOG_EXPONENTIAL_GAIN_STEP_SIZE), + 1U), + }, + }; + struct v4l2_ctrl_config ctrl_cfg = { + .type = V4L2_CTRL_TYPE_INTEGER, + .ops = &ccs_ctrl_ops, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(gain_ctrls); i++) { + ctrl_cfg.name = gain_ctrls[i].name; + ctrl_cfg.min = ctrl_cfg.def = gain_ctrls[i].min; + ctrl_cfg.max = gain_ctrls[i].max; + ctrl_cfg.step = gain_ctrls[i].step; + ctrl_cfg.id = gain_ctrls[i].id; + + v4l2_ctrl_new_custom(&sensor->pixel_array->ctrl_handler, + &ctrl_cfg, NULL); + } + } } if (CCS_LIM(sensor, DIGITAL_GAIN_CAPABILITY) == |