Commit ee25e211 authored by Sakari Ailus's avatar Sakari Ailus Committed by Mauro Carvalho Chehab
Browse files

media: ccs: Add support for analogue gain coefficient controls 



Add four controls for reading CCS analogue gain coefficients. The
values are constants that are device specific.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent a8a2d75b

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

+36 −2
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/v4l2-mediabus.h>

#include <media/v4l2-fwnode.h>

#include <media/v4l2-device.h>

#include <uapi/linux/ccs.h>



#include "ccs.h"
@@ -771,14 +772,46 @@ 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, 13);

	rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 17);

	if (rval)

		return rval;



	sensor->pixel_array->ctrl_handler.lock = &sensor->mutex;



	switch (CCS_LIM(sensor, ANALOG_GAIN_CAPABILITY)) {

	case CCS_ANALOG_GAIN_CAPABILITY_GLOBAL:

	case CCS_ANALOG_GAIN_CAPABILITY_GLOBAL: {

		struct {

			const char *name;

			u32 id;

			s32 value;

		} const gain_ctrls[] = {

			{ "Analogue Gain m0", V4L2_CID_CCS_ANALOGUE_GAIN_M0,

			  CCS_LIM(sensor, ANALOG_GAIN_M0), },

			{ "Analogue Gain c0", V4L2_CID_CCS_ANALOGUE_GAIN_C0,

			  CCS_LIM(sensor, ANALOG_GAIN_C0), },

			{ "Analogue Gain m1", V4L2_CID_CCS_ANALOGUE_GAIN_M1,

			  CCS_LIM(sensor, ANALOG_GAIN_M1), },

			{ "Analogue Gain c1", V4L2_CID_CCS_ANALOGUE_GAIN_C1,

			  CCS_LIM(sensor, ANALOG_GAIN_C1), },

		};

		struct v4l2_ctrl_config ctrl_cfg = {

			.type = V4L2_CTRL_TYPE_INTEGER,

			.ops = &ccs_ctrl_ops,

			.flags = V4L2_CTRL_FLAG_READ_ONLY,

			.step = 1,

		};

		unsigned int i;



		for (i = 0; i < ARRAY_SIZE(gain_ctrls); i++) {

			ctrl_cfg.name = gain_ctrls[i].name;

			ctrl_cfg.id = gain_ctrls[i].id;

			ctrl_cfg.min = ctrl_cfg.max = ctrl_cfg.def =

				gain_ctrls[i].value;



			v4l2_ctrl_new_custom(&sensor->pixel_array->ctrl_handler,

					     &ctrl_cfg, NULL);

		}



		v4l2_ctrl_new_std(&sensor->pixel_array->ctrl_handler,

				  &ccs_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,

				  CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN),
@@ -787,6 +820,7 @@ static int ccs_init_controls(struct ccs_sensor *sensor) 
				      1U),

				  CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN));

	}

	}



	if (CCS_LIM(sensor, DIGITAL_GAIN_CAPABILITY) ==

	    CCS_DIGITAL_GAIN_CAPABILITY_GLOBAL ||