[mirror_ubuntu-artful-kernel.git] / include / media / soc_camera.h

/*
 * camera image capture (abstract) bus driver header
 *
 * Copyright (C) 2006, Sascha Hauer, Pengutronix
 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef SOC_CAMERA_H
#define SOC_CAMERA_H

#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/pm.h>
#include <linux/videodev2.h>
#include <media/videobuf-core.h>
#include <media/videobuf2-core.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>

struct file;
struct soc_camera_link;

struct soc_camera_device {
	struct list_head list;		/* list of all registered devices */
	struct soc_camera_link *link;
	struct device *pdev;		/* Platform device */
	struct device *parent;		/* Camera host device */
	struct device *control;		/* E.g., the i2c client */
	s32 user_width;
	s32 user_height;
	u32 bytesperline;		/* for padding, zero if unused */
	u32 sizeimage;
	enum v4l2_colorspace colorspace;
	unsigned char iface;		/* Host number */
	unsigned char devnum;		/* Device number per host */
	struct soc_camera_sense *sense;	/* See comment in struct definition */
	struct video_device *vdev;
	struct v4l2_ctrl_handler ctrl_handler;
	const struct soc_camera_format_xlate *current_fmt;
	struct soc_camera_format_xlate *user_formats;
	int num_user_formats;
	enum v4l2_field field;		/* Preserve field over close() */
	void *host_priv;		/* Per-device host private data */
	/* soc_camera.c private count. Only accessed with .video_lock held */
	int use_count;
	struct mutex video_lock;	/* Protects device data */
	struct file *streamer;		/* stream owner */
	union {
		struct videobuf_queue vb_vidq;
		struct vb2_queue vb2_vidq;
	};
};

struct soc_camera_host {
	struct v4l2_device v4l2_dev;
	struct list_head list;
	unsigned char nr;				/* Host number */
	void *priv;
	const char *drv_name;
	struct soc_camera_host_ops *ops;
};

struct soc_camera_host_ops {
	struct module *owner;
	int (*add)(struct soc_camera_device *);
	void (*remove)(struct soc_camera_device *);
	/*
	 * .get_formats() is called for each client device format, but
	 * .put_formats() is only called once. Further, if any of the calls to
	 * .get_formats() fail, .put_formats() will not be called at all, the
	 * failing .get_formats() must then clean up internally.
	 */
	int (*get_formats)(struct soc_camera_device *, unsigned int,
			   struct soc_camera_format_xlate *);
	void (*put_formats)(struct soc_camera_device *);
	int (*cropcap)(struct soc_camera_device *, struct v4l2_cropcap *);
	int (*get_crop)(struct soc_camera_device *, struct v4l2_crop *);
	int (*set_crop)(struct soc_camera_device *, struct v4l2_crop *);
	/*
	 * The difference to .set_crop() is, that .set_livecrop is not allowed
	 * to change the output sizes
	 */
	int (*set_livecrop)(struct soc_camera_device *, struct v4l2_crop *);
	int (*set_fmt)(struct soc_camera_device *, struct v4l2_format *);
	int (*try_fmt)(struct soc_camera_device *, struct v4l2_format *);
	void (*init_videobuf)(struct videobuf_queue *,
			      struct soc_camera_device *);
	int (*init_videobuf2)(struct vb2_queue *,
			      struct soc_camera_device *);
	int (*reqbufs)(struct soc_camera_device *, struct v4l2_requestbuffers *);
	int (*querycap)(struct soc_camera_host *, struct v4l2_capability *);
	int (*set_bus_param)(struct soc_camera_device *, __u32);
	int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
	int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
	int (*enum_fsizes)(struct soc_camera_device *, struct v4l2_frmsizeenum *);
	unsigned int (*poll)(struct file *, poll_table *);
};

#define SOCAM_SENSOR_INVERT_PCLK	(1 << 0)
#define SOCAM_SENSOR_INVERT_MCLK	(1 << 1)
#define SOCAM_SENSOR_INVERT_HSYNC	(1 << 2)
#define SOCAM_SENSOR_INVERT_VSYNC	(1 << 3)
#define SOCAM_SENSOR_INVERT_DATA	(1 << 4)

struct i2c_board_info;
struct regulator_bulk_data;

struct soc_camera_link {
	/* Camera bus id, used to match a camera and a bus */
	int bus_id;
	/* Per camera SOCAM_SENSOR_* bus flags */
	unsigned long flags;
	int i2c_adapter_id;
	struct i2c_board_info *board_info;
	const char *module_name;
	void *priv;

	/* Optional regulators that have to be managed on power on/off events */
	struct regulator_bulk_data *regulators;
	int num_regulators;

	/*
	 * For non-I2C devices platform has to provide methods to add a device
	 * to the system and to remove it
	 */
	int (*add_device)(struct soc_camera_device *);
	void (*del_device)(struct soc_camera_device *);
	/* Optional callbacks to power on or off and reset the sensor */
	int (*power)(struct device *, int);
	int (*reset)(struct device *);
	/*
	 * some platforms may support different data widths than the sensors
	 * native ones due to different data line routing. Let the board code
	 * overwrite the width flags.
	 */
	int (*set_bus_param)(struct soc_camera_link *, unsigned long flags);
	unsigned long (*query_bus_param)(struct soc_camera_link *);
	void (*free_bus)(struct soc_camera_link *);
};

static inline struct soc_camera_host *to_soc_camera_host(
	const struct device *dev)
{
	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);

	return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
}

static inline struct soc_camera_link *to_soc_camera_link(
	const struct soc_camera_device *icd)
{
	return icd->link;
}

static inline struct device *to_soc_camera_control(
	const struct soc_camera_device *icd)
{
	return icd->control;
}

static inline struct v4l2_subdev *soc_camera_to_subdev(
	const struct soc_camera_device *icd)
{
	struct device *control = to_soc_camera_control(icd);
	return dev_get_drvdata(control);
}

int soc_camera_host_register(struct soc_camera_host *ici);
void soc_camera_host_unregister(struct soc_camera_host *ici);

const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
	struct soc_camera_device *icd, unsigned int fourcc);

/**
 * struct soc_camera_format_xlate - match between host and sensor formats
 * @code: code of a sensor provided format
 * @host_fmt: host format after host translation from code
 *
 * Host and sensor translation structure. Used in table of host and sensor
 * formats matchings in soc_camera_device. A host can override the generic list
 * generation by implementing get_formats(), and use it for format checks and
 * format setup.
 */
struct soc_camera_format_xlate {
	enum v4l2_mbus_pixelcode code;
	const struct soc_mbus_pixelfmt *host_fmt;
};

#define SOCAM_SENSE_PCLK_CHANGED	(1 << 0)

/**
 * This struct can be attached to struct soc_camera_device by the host driver
 * to request sense from the camera, for example, when calling .set_fmt(). The
 * host then can check which flags are set and verify respective values if any.
 * For example, if SOCAM_SENSE_PCLK_CHANGED is set, it means, pixclock has
 * changed during this operation. After completion the host should detach sense.
 *
 * @flags		ored SOCAM_SENSE_* flags
 * @master_clock	if the host wants to be informed about pixel-clock
 *			change, it better set master_clock.
 * @pixel_clock_max	maximum pixel clock frequency supported by the host,
 *			camera is not allowed to exceed this.
 * @pixel_clock		if the camera driver changed pixel clock during this
 *			operation, it sets SOCAM_SENSE_PCLK_CHANGED, uses
 *			master_clock to calculate the new pixel-clock and
 *			sets this field.
 */
struct soc_camera_sense {
	unsigned long flags;
	unsigned long master_clock;
	unsigned long pixel_clock_max;
	unsigned long pixel_clock;
};

#define SOCAM_DATAWIDTH(x)	BIT((x) - 1)
#define SOCAM_DATAWIDTH_4	SOCAM_DATAWIDTH(4)
#define SOCAM_DATAWIDTH_8	SOCAM_DATAWIDTH(8)
#define SOCAM_DATAWIDTH_9	SOCAM_DATAWIDTH(9)
#define SOCAM_DATAWIDTH_10	SOCAM_DATAWIDTH(10)
#define SOCAM_DATAWIDTH_15	SOCAM_DATAWIDTH(15)
#define SOCAM_DATAWIDTH_16	SOCAM_DATAWIDTH(16)

#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 | SOCAM_DATAWIDTH_8 | \
			      SOCAM_DATAWIDTH_9 | SOCAM_DATAWIDTH_10 | \
			      SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_16)

static inline void soc_camera_limit_side(int *start, int *length,
		unsigned int start_min,
		unsigned int length_min, unsigned int length_max)
{
	if (*length < length_min)
		*length = length_min;
	else if (*length > length_max)
		*length = length_max;

	if (*start < start_min)
		*start = start_min;
	else if (*start > start_min + length_max - *length)
		*start = start_min + length_max - *length;
}

unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
					    unsigned long flags);
unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl,
					   const struct v4l2_mbus_config *cfg);

/* This is only temporary here - until v4l2-subdev begins to link to video_device */
#include <linux/i2c.h>
static inline struct video_device *soc_camera_i2c_to_vdev(const struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
	return icd ? icd->vdev : NULL;
}

static inline struct soc_camera_link *soc_camera_i2c_to_link(const struct i2c_client *client)
{
	return client->dev.platform_data;
}

static inline struct v4l2_subdev *soc_camera_vdev_to_subdev(const struct video_device *vdev)
{
	struct soc_camera_device *icd = dev_get_drvdata(vdev->parent);
	return soc_camera_to_subdev(icd);
}

static inline struct soc_camera_device *soc_camera_from_vb2q(const struct vb2_queue *vq)
{
	return container_of(vq, struct soc_camera_device, vb2_vidq);
}

static inline struct soc_camera_device *soc_camera_from_vbq(const struct videobuf_queue *vq)
{
	return container_of(vq, struct soc_camera_device, vb_vidq);
}

static inline u32 soc_camera_grp_id(const struct soc_camera_device *icd)
{
	return (icd->iface << 8) | (icd->devnum + 1);
}

void soc_camera_lock(struct vb2_queue *vq);
void soc_camera_unlock(struct vb2_queue *vq);

#endif
Commit	Line	Data
e55222ef GL	1	/*
	2	* camera image capture (abstract) bus driver header
	3	*
	4	* Copyright (C) 2006, Sascha Hauer, Pengutronix
	5	* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#ifndef SOC_CAMERA_H
	13	#define SOC_CAMERA_H
	14
d839fe17	15	#include <linux/bitops.h>
52d268a3	16	#include <linux/device.h>
1c3bb743 GL	17	#include <linux/mutex.h>
1c3bb743 GL	18	#include <linux/pm.h>
e55222ef	19	#include <linux/videodev2.h>
092d3921	20	#include <media/videobuf-core.h>
592c2aba	21	#include <media/videobuf2-core.h>
ee02da64	22	#include <media/v4l2-ctrls.h>
979ea1dd	23	#include <media/v4l2-device.h>
e55222ef	24
57bee29d	25	struct file;
7dfff953	26	struct soc_camera_link;
57bee29d	27
e55222ef	28	struct soc_camera_device {
d33b290a	29	struct list_head list; /* list of all registered devices */
7dfff953	30	struct soc_camera_link *link;
979ea1dd	31	struct device pdev; / Platform device */
7dfff953 GL	32	struct device parent; / Camera host device */
7dfff953 GL	33	struct device control; / E.g., the i2c client */
6a6c8786 GL	34	s32 user_width;
6a6c8786 GL	35	s32 user_height;
0e4c180d SA	36	u32 bytesperline; /* for padding, zero if unused */
0e4c180d SA	37	u32 sizeimage;
760697be	38	enum v4l2_colorspace colorspace;
e55222ef GL	39	unsigned char iface; /* Host number */
e55222ef GL	40	unsigned char devnum; /* Device number per host */
a9bef518	41	struct soc_camera_sense sense; / See comment in struct definition */
e55222ef	42	struct video_device *vdev;
ee02da64	43	struct v4l2_ctrl_handler ctrl_handler;
760697be	44	const struct soc_camera_format_xlate *current_fmt;
c2786ad2 GL	45	struct soc_camera_format_xlate *user_formats;
c2786ad2 GL	46	int num_user_formats;
025c18a1	47	enum v4l2_field field; /* Preserve field over close() */
1c3bb743 GL	48	void host_priv; / Per-device host private data */
1c3bb743 GL	49	/* soc_camera.c private count. Only accessed with .video_lock held */
9dc4e48f	50	int use_count;
1c3bb743	51	struct mutex video_lock; /* Protects device data */
57bee29d	52	struct file streamer; / stream owner */
592c2aba GL	53	union {
	54	struct videobuf_queue vb_vidq;
	55	struct vb2_queue vb2_vidq;
	56	};
e55222ef GL	57	};
	58
	59	struct soc_camera_host {
979ea1dd	60	struct v4l2_device v4l2_dev;
e55222ef	61	struct list_head list;
e55222ef	62	unsigned char nr; /* Host number */
e55222ef	63	void *priv;
af128a10	64	const char *drv_name;
b8d9904c GL	65	struct soc_camera_host_ops *ops;
	66	};
	67
	68	struct soc_camera_host_ops {
	69	struct module *owner;
e55222ef GL	70	int (add)(struct soc_camera_device );
e55222ef GL	71	void (remove)(struct soc_camera_device );
fa48984e GL	72	/*
	73	* .get_formats() is called for each client device format, but
	74	* .put_formats() is only called once. Further, if any of the calls to
	75	* .get_formats() fail, .put_formats() will not be called at all, the
	76	* failing .get_formats() must then clean up internally.
	77	*/
3805f201	78	int (get_formats)(struct soc_camera_device , unsigned int,
c2786ad2	79	struct soc_camera_format_xlate *);
fa48984e	80	void (put_formats)(struct soc_camera_device );
6a6c8786 GL	81	int (cropcap)(struct soc_camera_device , struct v4l2_cropcap *);
6a6c8786 GL	82	int (get_crop)(struct soc_camera_device , struct v4l2_crop *);
08590b96	83	int (set_crop)(struct soc_camera_device , struct v4l2_crop *);
aee5c2f1 GL	84	/*
	85	* The difference to .set_crop() is, that .set_livecrop is not allowed
	86	* to change the output sizes
	87	*/
	88	int (set_livecrop)(struct soc_camera_device , struct v4l2_crop *);
09e231b3	89	int (set_fmt)(struct soc_camera_device , struct v4l2_format *);
d8fac217	90	int (try_fmt)(struct soc_camera_device , struct v4l2_format *);
a034d1b7	91	void (init_videobuf)(struct videobuf_queue ,
092d3921	92	struct soc_camera_device *);
592c2aba GL	93	int (init_videobuf2)(struct vb2_queue ,
592c2aba GL	94	struct soc_camera_device *);
57bee29d	95	int (reqbufs)(struct soc_camera_device , struct v4l2_requestbuffers *);
e55222ef	96	int (querycap)(struct soc_camera_host , struct v4l2_capability *);
ad5f2e85	97	int (set_bus_param)(struct soc_camera_device , __u32);
c9f6ef69 GL	98	int (get_parm)(struct soc_camera_device , struct v4l2_streamparm *);
c9f6ef69 GL	99	int (set_parm)(struct soc_camera_device , struct v4l2_streamparm *);
ed5b65dc	100	int (enum_fsizes)(struct soc_camera_device , struct v4l2_frmsizeenum *);
e55222ef GL	101	unsigned int (poll)(struct file , poll_table *);
	102	};
	103
bd73b36f GL	104	#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)
	105	#define SOCAM_SENSOR_INVERT_MCLK (1 << 1)
	106	#define SOCAM_SENSOR_INVERT_HSYNC (1 << 2)
	107	#define SOCAM_SENSOR_INVERT_VSYNC (1 << 3)
	108	#define SOCAM_SENSOR_INVERT_DATA (1 << 4)
	109
0fd327bd	110	struct i2c_board_info;
96e442c1	111	struct regulator_bulk_data;
0fd327bd	112
e55222ef GL	113	struct soc_camera_link {
	114	/* Camera bus id, used to match a camera and a bus */
	115	int bus_id;
bd73b36f GL	116	/* Per camera SOCAM_SENSOR_* bus flags */
bd73b36f GL	117	unsigned long flags;
0fd327bd GL	118	int i2c_adapter_id;
	119	struct i2c_board_info *board_info;
	120	const char *module_name;
3fd7ceff GL	121	void *priv;
3fd7ceff GL	122
96e442c1 AP	123	/* Optional regulators that have to be managed on power on/off events */
	124	struct regulator_bulk_data *regulators;
	125	int num_regulators;
	126
c41debaf	127	/*
d33b290a GL	128	* For non-I2C devices platform has to provide methods to add a device
d33b290a GL	129	* to the system and to remove it
c41debaf	130	*/
7dfff953 GL	131	int (add_device)(struct soc_camera_device );
7dfff953 GL	132	void (del_device)(struct soc_camera_device );
81034663 SH	133	/* Optional callbacks to power on or off and reset the sensor */
	134	int (power)(struct device , int);
	135	int (reset)(struct device );
28f59339 SH	136	/*
	137	* some platforms may support different data widths than the sensors
	138	* native ones due to different data line routing. Let the board code
	139	* overwrite the width flags.
	140	*/
	141	int (set_bus_param)(struct soc_camera_link , unsigned long flags);
	142	unsigned long (query_bus_param)(struct soc_camera_link );
594bb46d	143	void (free_bus)(struct soc_camera_link );
e55222ef GL	144	};
e55222ef GL	145
96c75399 GL	146	static inline struct soc_camera_host *to_soc_camera_host(
96c75399 GL	147	const struct device *dev)
e55222ef	148	{
979ea1dd GL	149	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
	150
	151	return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
e55222ef GL	152	}
e55222ef GL	153
96c75399 GL	154	static inline struct soc_camera_link *to_soc_camera_link(
96c75399 GL	155	const struct soc_camera_device *icd)
40e2e092	156	{
7dfff953	157	return icd->link;
40e2e092	158	}
e55222ef	159
96c75399 GL	160	static inline struct device *to_soc_camera_control(
96c75399 GL	161	const struct soc_camera_device *icd)
40e2e092	162	{
7dfff953	163	return icd->control;
40e2e092	164	}
e55222ef	165
96c75399 GL	166	static inline struct v4l2_subdev *soc_camera_to_subdev(
96c75399 GL	167	const struct soc_camera_device *icd)
c9c1f1c0 GL	168	{
	169	struct device *control = to_soc_camera_control(icd);
	170	return dev_get_drvdata(control);
	171	}
	172
40e2e092 GL	173	int soc_camera_host_register(struct soc_camera_host *ici);
	174	void soc_camera_host_unregister(struct soc_camera_host *ici);
	175
40e2e092	176	const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
c2786ad2	177	struct soc_camera_device *icd, unsigned int fourcc);
25c4d74e	178
c2786ad2 GL	179	/**
c2786ad2 GL	180	* struct soc_camera_format_xlate - match between host and sensor formats
760697be GL	181	* @code: code of a sensor provided format
760697be GL	182	* @host_fmt: host format after host translation from code
c2786ad2 GL	183	*
	184	* Host and sensor translation structure. Used in table of host and sensor
	185	* formats matchings in soc_camera_device. A host can override the generic list
	186	* generation by implementing get_formats(), and use it for format checks and
	187	* format setup.
	188	*/
	189	struct soc_camera_format_xlate {
760697be GL	190	enum v4l2_mbus_pixelcode code;
760697be GL	191	const struct soc_mbus_pixelfmt *host_fmt;
c2786ad2 GL	192	};
c2786ad2 GL	193
a9bef518 GL	194	#define SOCAM_SENSE_PCLK_CHANGED (1 << 0)
	195
	196	/**
	197	* This struct can be attached to struct soc_camera_device by the host driver
	198	* to request sense from the camera, for example, when calling .set_fmt(). The
	199	* host then can check which flags are set and verify respective values if any.
	200	* For example, if SOCAM_SENSE_PCLK_CHANGED is set, it means, pixclock has
	201	* changed during this operation. After completion the host should detach sense.
	202	*
	203	* @flags ored SOCAM_SENSE_* flags
	204	* @master_clock if the host wants to be informed about pixel-clock
	205	* change, it better set master_clock.
	206	* @pixel_clock_max maximum pixel clock frequency supported by the host,
	207	* camera is not allowed to exceed this.
	208	* @pixel_clock if the camera driver changed pixel clock during this
	209	* operation, it sets SOCAM_SENSE_PCLK_CHANGED, uses
	210	* master_clock to calculate the new pixel-clock and
	211	* sets this field.
	212	*/
	213	struct soc_camera_sense {
	214	unsigned long flags;
	215	unsigned long master_clock;
	216	unsigned long pixel_clock_max;
	217	unsigned long pixel_clock;
	218	};
	219
d839fe17 GL	220	#define SOCAM_DATAWIDTH(x) BIT((x) - 1)
	221	#define SOCAM_DATAWIDTH_4 SOCAM_DATAWIDTH(4)
	222	#define SOCAM_DATAWIDTH_8 SOCAM_DATAWIDTH(8)
	223	#define SOCAM_DATAWIDTH_9 SOCAM_DATAWIDTH(9)
	224	#define SOCAM_DATAWIDTH_10 SOCAM_DATAWIDTH(10)
	225	#define SOCAM_DATAWIDTH_15 SOCAM_DATAWIDTH(15)
	226	#define SOCAM_DATAWIDTH_16 SOCAM_DATAWIDTH(16)
042d8790 GL	227
	228	#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 \| SOCAM_DATAWIDTH_8 \| \
	229	SOCAM_DATAWIDTH_9 \| SOCAM_DATAWIDTH_10 \| \
	230	SOCAM_DATAWIDTH_15 \| SOCAM_DATAWIDTH_16)
ad5f2e85	231
e26b3144 MN	232	static inline void soc_camera_limit_side(int start, int length,
e26b3144 MN	233	unsigned int start_min,
6a6c8786 GL	234	unsigned int length_min, unsigned int length_max)
	235	{
	236	if (*length < length_min)
	237	*length = length_min;
	238	else if (*length > length_max)
	239	*length = length_max;
	240
	241	if (*start < start_min)
	242	*start = start_min;
	243	else if (start > start_min + length_max - length)
	244	start = start_min + length_max - length;
	245	}
	246
32c69fcc GL	247	unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
	248	unsigned long flags);
	249	unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl,
	250	const struct v4l2_mbus_config *cfg);
bd73b36f	251
4f9fb5ed MCC	252	/* This is only temporary here - until v4l2-subdev begins to link to video_device */
4f9fb5ed MCC	253	#include <linux/i2c.h>
14178aa5	254	static inline struct video_device soc_camera_i2c_to_vdev(const struct i2c_client client)
4f9fb5ed	255	{
2f0babb7	256	struct v4l2_subdev *sd = i2c_get_clientdata(client);
4c0b036d	257	struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
14178aa5	258	return icd ? icd->vdev : NULL;
4f9fb5ed MCC	259	}
4f9fb5ed MCC	260
14178aa5 GL	261	static inline struct soc_camera_link soc_camera_i2c_to_link(const struct i2c_client client)
14178aa5 GL	262	{
2f0babb7	263	return client->dev.platform_data;
14178aa5 GL	264	}
	265
	266	static inline struct v4l2_subdev soc_camera_vdev_to_subdev(const struct video_device vdev)
	267	{
	268	struct soc_camera_device *icd = dev_get_drvdata(vdev->parent);
	269	return soc_camera_to_subdev(icd);
	270	}
	271
14178aa5	272	static inline struct soc_camera_device soc_camera_from_vb2q(const struct vb2_queue vq)
8eb4476d GL	273	{
	274	return container_of(vq, struct soc_camera_device, vb2_vidq);
	275	}
	276
14178aa5	277	static inline struct soc_camera_device soc_camera_from_vbq(const struct videobuf_queue vq)
8eb4476d GL	278	{
	279	return container_of(vq, struct soc_camera_device, vb_vidq);
	280	}
	281
4c0b036d GL	282	static inline u32 soc_camera_grp_id(const struct soc_camera_device *icd)
	283	{
	284	return (icd->iface << 8) \| (icd->devnum + 1);
	285	}
	286
592c2aba GL	287	void soc_camera_lock(struct vb2_queue *vq);
	288	void soc_camera_unlock(struct vb2_queue *vq);
	289
e55222ef	290	#endif