Commit 7eb5a7e1 authored by Sakari Ailus's avatar Sakari Ailus Committed by Mauro Carvalho Chehab
Browse files

media: ccs: Add digital gain support 



CCS supports global (all-component) digital gain. Add support for it.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 8fe0267d

drivers/media/i2c/ccs/ccs-core.c

+16 −1
Original line number Diff line number Diff line
@@ -670,6 +670,11 @@ static int ccs_set_ctrl(struct v4l2_ctrl *ctrl) 
	case V4L2_CID_ANALOGUE_GAIN:

		rval = ccs_write(sensor, ANALOG_GAIN_CODE_GLOBAL, ctrl->val);



		break;



	case V4L2_CID_DIGITAL_GAIN:

		rval = ccs_write(sensor, DIGITAL_GAIN_GLOBAL, ctrl->val);



		break;

	case V4L2_CID_EXPOSURE:

		rval = ccs_write(sensor, COARSE_INTEGRATION_TIME, ctrl->val);
@@ -739,7 +744,7 @@ static int ccs_init_controls(struct ccs_sensor *sensor) 
	struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);

	int rval;



	rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12);

	rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 13);

	if (rval)

		return rval;
@@ -753,6 +758,16 @@ static int ccs_init_controls(struct ccs_sensor *sensor) 
		max(CCS_LIM(sensor, ANALOG_GAIN_CODE_STEP), 1U),

		CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN));



	if (CCS_LIM(sensor, DIGITAL_GAIN_CAPABILITY) ==

	    CCS_DIGITAL_GAIN_CAPABILITY_GLOBAL)

		v4l2_ctrl_new_std(&sensor->pixel_array->ctrl_handler,

				  &ccs_ctrl_ops, V4L2_CID_DIGITAL_GAIN,

				  CCS_LIM(sensor, DIGITAL_GAIN_MIN),

				  CCS_LIM(sensor, DIGITAL_GAIN_MAX),

				  max(CCS_LIM(sensor, DIGITAL_GAIN_STEP_SIZE),

				      1U),

				  0x100);



	/* Exposure limits will be updated soon, use just something here. */

	sensor->exposure = v4l2_ctrl_new_std(

		&sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops,