[media] cs5345: use the control framework (34a078da) · Commits · e / devices / android_kernel_teracube_mt6765

drivers/media/video/cs5345.c

+59 −28

Original line number	Original line	Diff line number	Diff line
	@@ -25,6 +25,7 @@
	#include <linux/slab.h>		#include <linux/slab.h>
	#include <media/v4l2-device.h>		#include <media/v4l2-device.h>
	#include <media/v4l2-chip-ident.h>		#include <media/v4l2-chip-ident.h>
			#include <media/v4l2-ctrls.h>

	MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");		MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
	MODULE_AUTHOR("Hans Verkuil");		MODULE_AUTHOR("Hans Verkuil");
	@@ -36,6 +37,20 @@ module_param(debug, bool, 0644);

	MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");		MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");

			struct cs5345_state {
			struct v4l2_subdev sd;
			struct v4l2_ctrl_handler hdl;
			};

			static inline struct cs5345_state to_state(struct v4l2_subdev sd)
			{
			return container_of(sd, struct cs5345_state, sd);
			}

			static inline struct v4l2_subdev to_sd(struct v4l2_ctrl ctrl)
			{
			return &container_of(ctrl->handler, struct cs5345_state, hdl)->sd;
			}

	/* ----------------------------------------------------------------------- */		/* ----------------------------------------------------------------------- */

	@@ -65,33 +80,20 @@ static int cs5345_s_routing(struct v4l2_subdev *sd,
	return 0;		return 0;
	}		}

	static int cs5345_g_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)		static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl)
	{		{
	if (ctrl->id == V4L2_CID_AUDIO_MUTE) {		struct v4l2_subdev *sd = to_sd(ctrl);
	ctrl->value = (cs5345_read(sd, 0x04) & 0x08) != 0;
	return 0;
	}
	if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
	return -EINVAL;
	ctrl->value = cs5345_read(sd, 0x07) & 0x3f;
	if (ctrl->value >= 32)
	ctrl->value = ctrl->value - 64;
	return 0;
	}

	static int cs5345_s_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)		switch (ctrl->id) {
	{		case V4L2_CID_AUDIO_MUTE:
	if (ctrl->id == V4L2_CID_AUDIO_MUTE) {		cs5345_write(sd, 0x04, ctrl->val ? 0x80 : 0);
	cs5345_write(sd, 0x04, ctrl->value ? 0x80 : 0);		return 0;
			case V4L2_CID_AUDIO_VOLUME:
			cs5345_write(sd, 0x07, ((u8)ctrl->val) & 0x3f);
			cs5345_write(sd, 0x08, ((u8)ctrl->val) & 0x3f);
	return 0;		return 0;
	}		}
	if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
	return -EINVAL;		return -EINVAL;
	if (ctrl->value > 24 \|\| ctrl->value < -24)
	return -EINVAL;
	cs5345_write(sd, 0x07, ((u8)ctrl->value) & 0x3f);
	cs5345_write(sd, 0x08, ((u8)ctrl->value) & 0x3f);
	return 0;
	}		}

	#ifdef CONFIG_VIDEO_ADV_DEBUG		#ifdef CONFIG_VIDEO_ADV_DEBUG
	@@ -144,11 +146,20 @@ static int cs5345_log_status(struct v4l2_subdev *sd)

	/* ----------------------------------------------------------------------- */		/* ----------------------------------------------------------------------- */

			static const struct v4l2_ctrl_ops cs5345_ctrl_ops = {
			.s_ctrl = cs5345_s_ctrl,
			};

	static const struct v4l2_subdev_core_ops cs5345_core_ops = {		static const struct v4l2_subdev_core_ops cs5345_core_ops = {
	.log_status = cs5345_log_status,		.log_status = cs5345_log_status,
	.g_chip_ident = cs5345_g_chip_ident,		.g_chip_ident = cs5345_g_chip_ident,
	.g_ctrl = cs5345_g_ctrl,		.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
	.s_ctrl = cs5345_s_ctrl,		.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
			.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
			.g_ctrl = v4l2_subdev_g_ctrl,
			.s_ctrl = v4l2_subdev_s_ctrl,
			.queryctrl = v4l2_subdev_queryctrl,
			.querymenu = v4l2_subdev_querymenu,
	#ifdef CONFIG_VIDEO_ADV_DEBUG		#ifdef CONFIG_VIDEO_ADV_DEBUG
	.g_register = cs5345_g_register,		.g_register = cs5345_g_register,
	.s_register = cs5345_s_register,		.s_register = cs5345_s_register,
	@@ -169,6 +180,7 @@ static const struct v4l2_subdev_ops cs5345_ops = {
	static int cs5345_probe(struct i2c_client *client,		static int cs5345_probe(struct i2c_client *client,
	const struct i2c_device_id *id)		const struct i2c_device_id *id)
	{		{
			struct cs5345_state *state;
	struct v4l2_subdev *sd;		struct v4l2_subdev *sd;

	/* Check if the adapter supports the needed features */		/* Check if the adapter supports the needed features */
	@@ -178,11 +190,28 @@ static int cs5345_probe(struct i2c_client *client,
	v4l_info(client, "chip found @ 0x%x (%s)\n",		v4l_info(client, "chip found @ 0x%x (%s)\n",
	client->addr << 1, client->adapter->name);		client->addr << 1, client->adapter->name);

	sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);		state = kzalloc(sizeof(struct cs5345_state), GFP_KERNEL);
	if (sd == NULL)		if (state == NULL)
	return -ENOMEM;		return -ENOMEM;
			sd = &state->sd;
	v4l2_i2c_subdev_init(sd, client, &cs5345_ops);		v4l2_i2c_subdev_init(sd, client, &cs5345_ops);

			v4l2_ctrl_handler_init(&state->hdl, 2);
			v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
			V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
			v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
			V4L2_CID_AUDIO_VOLUME, -24, 24, 1, 0);
			sd->ctrl_handler = &state->hdl;
			if (state->hdl.error) {
			int err = state->hdl.error;

			v4l2_ctrl_handler_free(&state->hdl);
			kfree(state);
			return err;
			}
			/* set volume/mute */
			v4l2_ctrl_handler_setup(&state->hdl);

	cs5345_write(sd, 0x02, 0x00);		cs5345_write(sd, 0x02, 0x00);
	cs5345_write(sd, 0x04, 0x01);		cs5345_write(sd, 0x04, 0x01);
	cs5345_write(sd, 0x09, 0x01);		cs5345_write(sd, 0x09, 0x01);
	@@ -194,9 +223,11 @@ static int cs5345_probe(struct i2c_client *client,
	static int cs5345_remove(struct i2c_client *client)		static int cs5345_remove(struct i2c_client *client)
	{		{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);		struct v4l2_subdev *sd = i2c_get_clientdata(client);
			struct cs5345_state *state = to_state(sd);

	v4l2_device_unregister_subdev(sd);		v4l2_device_unregister_subdev(sd);
	kfree(sd);		v4l2_ctrl_handler_free(&state->hdl);
			kfree(state);
	return 0;		return 0;
	}		}