[deliverable/linux.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/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-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 soc_camera_ops *ops;
	struct video_device *vdev;
	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_ctrl)(struct soc_camera_device *, struct v4l2_control *);
	int (*set_ctrl)(struct soc_camera_device *, struct v4l2_control *);
	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 *);
	const struct v4l2_queryctrl *controls;
	int num_controls;
};

#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;
};

struct soc_camera_ops {
	unsigned long (*query_bus_param)(struct soc_camera_device *);
	int (*set_bus_param)(struct soc_camera_device *, unsigned long);
	const struct v4l2_queryctrl *controls;
	int num_controls;
};

#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;
};

static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
	struct soc_camera_ops *ops, int id)
{
	int i;

	for (i = 0; i < ops->num_controls; i++)
		if (ops->controls[i].id == id)
			return &ops->controls[i];

	return NULL;
}

#define SOCAM_MASTER			(1 << 0)
#define SOCAM_SLAVE			(1 << 1)
#define SOCAM_HSYNC_ACTIVE_HIGH		(1 << 2)
#define SOCAM_HSYNC_ACTIVE_LOW		(1 << 3)
#define SOCAM_VSYNC_ACTIVE_HIGH		(1 << 4)
#define SOCAM_VSYNC_ACTIVE_LOW		(1 << 5)
#define SOCAM_DATAWIDTH_4		(1 << 6)
#define SOCAM_DATAWIDTH_8		(1 << 7)
#define SOCAM_DATAWIDTH_9		(1 << 8)
#define SOCAM_DATAWIDTH_10		(1 << 9)
#define SOCAM_DATAWIDTH_15		(1 << 10)
#define SOCAM_DATAWIDTH_16		(1 << 11)
#define SOCAM_PCLK_SAMPLE_RISING	(1 << 12)
#define SOCAM_PCLK_SAMPLE_FALLING	(1 << 13)
#define SOCAM_DATA_ACTIVE_HIGH		(1 << 14)
#define SOCAM_DATA_ACTIVE_LOW		(1 << 15)
#define SOCAM_MIPI_1LANE		(1 << 16)
#define SOCAM_MIPI_2LANE		(1 << 17)
#define SOCAM_MIPI_3LANE		(1 << 18)
#define SOCAM_MIPI_4LANE		(1 << 19)
#define SOCAM_MIPI	(SOCAM_MIPI_1LANE | SOCAM_MIPI_2LANE | \
			SOCAM_MIPI_3LANE | SOCAM_MIPI_4LANE)

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

static inline unsigned long soc_camera_bus_param_compatible(
			unsigned long camera_flags, unsigned long bus_flags)
{
	unsigned long common_flags, hsync, vsync, pclk, data, buswidth, mode;
	unsigned long mipi;

	common_flags = camera_flags & bus_flags;

	hsync = common_flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW);
	vsync = common_flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW);
	pclk = common_flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING);
	data = common_flags & (SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_LOW);
	mode = common_flags & (SOCAM_MASTER | SOCAM_SLAVE);
	buswidth = common_flags & SOCAM_DATAWIDTH_MASK;
	mipi = common_flags & SOCAM_MIPI;

	return ((!hsync || !vsync || !pclk || !data || !mode || !buswidth) && !mipi) ? 0 :
		common_flags;
}

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;
}

extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
						   unsigned long flags);

/* 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(struct i2c_client *client)
{
	struct soc_camera_device *icd = client->dev.platform_data;
	return icd->vdev;
}

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

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

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
52d268a3	15	#include <linux/device.h>
1c3bb743 GL	16	#include <linux/mutex.h>
1c3bb743 GL	17	#include <linux/pm.h>
e55222ef	18	#include <linux/videodev2.h>
092d3921	19	#include <media/videobuf-core.h>
592c2aba	20	#include <media/videobuf2-core.h>
979ea1dd	21	#include <media/v4l2-device.h>
e55222ef	22
57bee29d	23	struct file;
7dfff953	24	struct soc_camera_link;
57bee29d	25
e55222ef	26	struct soc_camera_device {
d33b290a	27	struct list_head list; /* list of all registered devices */
7dfff953	28	struct soc_camera_link *link;
979ea1dd	29	struct device pdev; / Platform device */
7dfff953 GL	30	struct device parent; / Camera host device */
7dfff953 GL	31	struct device control; / E.g., the i2c client */
6a6c8786 GL	32	s32 user_width;
6a6c8786 GL	33	s32 user_height;
0e4c180d SA	34	u32 bytesperline; /* for padding, zero if unused */
0e4c180d SA	35	u32 sizeimage;
760697be	36	enum v4l2_colorspace colorspace;
e55222ef GL	37	unsigned char iface; /* Host number */
e55222ef GL	38	unsigned char devnum; /* Device number per host */
a9bef518	39	struct soc_camera_sense sense; / See comment in struct definition */
e55222ef GL	40	struct soc_camera_ops *ops;
e55222ef GL	41	struct video_device *vdev;
760697be	42	const struct soc_camera_format_xlate *current_fmt;
c2786ad2 GL	43	struct soc_camera_format_xlate *user_formats;
c2786ad2 GL	44	int num_user_formats;
025c18a1	45	enum v4l2_field field; /* Preserve field over close() */
1c3bb743 GL	46	void host_priv; / Per-device host private data */
1c3bb743 GL	47	/* soc_camera.c private count. Only accessed with .video_lock held */
9dc4e48f	48	int use_count;
1c3bb743	49	struct mutex video_lock; /* Protects device data */
57bee29d	50	struct file streamer; / stream owner */
592c2aba GL	51	union {
	52	struct videobuf_queue vb_vidq;
	53	struct vb2_queue vb2_vidq;
	54	};
e55222ef GL	55	};
	56
	57	struct soc_camera_host {
979ea1dd	58	struct v4l2_device v4l2_dev;
e55222ef	59	struct list_head list;
e55222ef	60	unsigned char nr; /* Host number */
e55222ef	61	void *priv;
af128a10	62	const char *drv_name;
b8d9904c GL	63	struct soc_camera_host_ops *ops;
	64	};
	65
	66	struct soc_camera_host_ops {
	67	struct module *owner;
e55222ef GL	68	int (add)(struct soc_camera_device );
e55222ef GL	69	void (remove)(struct soc_camera_device );
fa48984e GL	70	/*
	71	* .get_formats() is called for each client device format, but
	72	* .put_formats() is only called once. Further, if any of the calls to
	73	* .get_formats() fail, .put_formats() will not be called at all, the
	74	* failing .get_formats() must then clean up internally.
	75	*/
3805f201	76	int (get_formats)(struct soc_camera_device , unsigned int,
c2786ad2	77	struct soc_camera_format_xlate *);
fa48984e	78	void (put_formats)(struct soc_camera_device );
6a6c8786 GL	79	int (cropcap)(struct soc_camera_device , struct v4l2_cropcap *);
6a6c8786 GL	80	int (get_crop)(struct soc_camera_device , struct v4l2_crop *);
08590b96	81	int (set_crop)(struct soc_camera_device , struct v4l2_crop *);
aee5c2f1 GL	82	/*
	83	* The difference to .set_crop() is, that .set_livecrop is not allowed
	84	* to change the output sizes
	85	*/
	86	int (set_livecrop)(struct soc_camera_device , struct v4l2_crop *);
09e231b3	87	int (set_fmt)(struct soc_camera_device , struct v4l2_format *);
d8fac217	88	int (try_fmt)(struct soc_camera_device , struct v4l2_format *);
a034d1b7	89	void (init_videobuf)(struct videobuf_queue ,
092d3921	90	struct soc_camera_device *);
592c2aba GL	91	int (init_videobuf2)(struct vb2_queue ,
592c2aba GL	92	struct soc_camera_device *);
57bee29d	93	int (reqbufs)(struct soc_camera_device , struct v4l2_requestbuffers *);
e55222ef	94	int (querycap)(struct soc_camera_host , struct v4l2_capability *);
ad5f2e85	95	int (set_bus_param)(struct soc_camera_device , __u32);
2840d249 GL	96	int (get_ctrl)(struct soc_camera_device , struct v4l2_control *);
2840d249 GL	97	int (set_ctrl)(struct soc_camera_device , struct v4l2_control *);
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	101	unsigned int (poll)(struct file , poll_table *);
2840d249 GL	102	const struct v4l2_queryctrl *controls;
2840d249 GL	103	int num_controls;
e55222ef GL	104	};
e55222ef GL	105
bd73b36f GL	106	#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)
	107	#define SOCAM_SENSOR_INVERT_MCLK (1 << 1)
	108	#define SOCAM_SENSOR_INVERT_HSYNC (1 << 2)
	109	#define SOCAM_SENSOR_INVERT_VSYNC (1 << 3)
	110	#define SOCAM_SENSOR_INVERT_DATA (1 << 4)
	111
0fd327bd	112	struct i2c_board_info;
96e442c1	113	struct regulator_bulk_data;
0fd327bd	114
e55222ef GL	115	struct soc_camera_link {
	116	/* Camera bus id, used to match a camera and a bus */
	117	int bus_id;
bd73b36f GL	118	/* Per camera SOCAM_SENSOR_* bus flags */
bd73b36f GL	119	unsigned long flags;
0fd327bd GL	120	int i2c_adapter_id;
	121	struct i2c_board_info *board_info;
	122	const char *module_name;
3fd7ceff GL	123	void *priv;
3fd7ceff GL	124
96e442c1 AP	125	/* Optional regulators that have to be managed on power on/off events */
	126	struct regulator_bulk_data *regulators;
	127	int num_regulators;
	128
c41debaf	129	/*
d33b290a GL	130	* For non-I2C devices platform has to provide methods to add a device
d33b290a GL	131	* to the system and to remove it
c41debaf	132	*/
7dfff953 GL	133	int (add_device)(struct soc_camera_device );
7dfff953 GL	134	void (del_device)(struct soc_camera_device );
81034663 SH	135	/* Optional callbacks to power on or off and reset the sensor */
	136	int (power)(struct device , int);
	137	int (reset)(struct device );
28f59339 SH	138	/*
	139	* some platforms may support different data widths than the sensors
	140	* native ones due to different data line routing. Let the board code
	141	* overwrite the width flags.
	142	*/
	143	int (set_bus_param)(struct soc_camera_link , unsigned long flags);
	144	unsigned long (query_bus_param)(struct soc_camera_link );
594bb46d	145	void (free_bus)(struct soc_camera_link );
e55222ef GL	146	};
e55222ef GL	147
96c75399 GL	148	static inline struct soc_camera_host *to_soc_camera_host(
96c75399 GL	149	const struct device *dev)
e55222ef	150	{
979ea1dd GL	151	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
	152
	153	return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
e55222ef GL	154	}
e55222ef GL	155
96c75399 GL	156	static inline struct soc_camera_link *to_soc_camera_link(
96c75399 GL	157	const struct soc_camera_device *icd)
40e2e092	158	{
7dfff953	159	return icd->link;
40e2e092	160	}
e55222ef	161
96c75399 GL	162	static inline struct device *to_soc_camera_control(
96c75399 GL	163	const struct soc_camera_device *icd)
40e2e092	164	{
7dfff953	165	return icd->control;
40e2e092	166	}
e55222ef	167
96c75399 GL	168	static inline struct v4l2_subdev *soc_camera_to_subdev(
96c75399 GL	169	const struct soc_camera_device *icd)
c9c1f1c0 GL	170	{
	171	struct device *control = to_soc_camera_control(icd);
	172	return dev_get_drvdata(control);
	173	}
	174
40e2e092 GL	175	int soc_camera_host_register(struct soc_camera_host *ici);
	176	void soc_camera_host_unregister(struct soc_camera_host *ici);
	177
40e2e092	178	const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
c2786ad2	179	struct soc_camera_device *icd, unsigned int fourcc);
25c4d74e	180
c2786ad2 GL	181	/**
c2786ad2 GL	182	* struct soc_camera_format_xlate - match between host and sensor formats
760697be GL	183	* @code: code of a sensor provided format
760697be GL	184	* @host_fmt: host format after host translation from code
c2786ad2 GL	185	*
	186	* Host and sensor translation structure. Used in table of host and sensor
	187	* formats matchings in soc_camera_device. A host can override the generic list
	188	* generation by implementing get_formats(), and use it for format checks and
	189	* format setup.
	190	*/
	191	struct soc_camera_format_xlate {
760697be GL	192	enum v4l2_mbus_pixelcode code;
760697be GL	193	const struct soc_mbus_pixelfmt *host_fmt;
c2786ad2 GL	194	};
c2786ad2 GL	195
e55222ef	196	struct soc_camera_ops {
ad5f2e85 GL	197	unsigned long (query_bus_param)(struct soc_camera_device );
ad5f2e85 GL	198	int (set_bus_param)(struct soc_camera_device , unsigned long);
e55222ef GL	199	const struct v4l2_queryctrl *controls;
e55222ef GL	200	int num_controls;
e55222ef GL	201	};
e55222ef GL	202
a9bef518 GL	203	#define SOCAM_SENSE_PCLK_CHANGED (1 << 0)
	204
	205	/**
	206	* This struct can be attached to struct soc_camera_device by the host driver
	207	* to request sense from the camera, for example, when calling .set_fmt(). The
	208	* host then can check which flags are set and verify respective values if any.
	209	* For example, if SOCAM_SENSE_PCLK_CHANGED is set, it means, pixclock has
	210	* changed during this operation. After completion the host should detach sense.
	211	*
	212	* @flags ored SOCAM_SENSE_* flags
	213	* @master_clock if the host wants to be informed about pixel-clock
	214	* change, it better set master_clock.
	215	* @pixel_clock_max maximum pixel clock frequency supported by the host,
	216	* camera is not allowed to exceed this.
	217	* @pixel_clock if the camera driver changed pixel clock during this
	218	* operation, it sets SOCAM_SENSE_PCLK_CHANGED, uses
	219	* master_clock to calculate the new pixel-clock and
	220	* sets this field.
	221	*/
	222	struct soc_camera_sense {
	223	unsigned long flags;
	224	unsigned long master_clock;
	225	unsigned long pixel_clock_max;
	226	unsigned long pixel_clock;
	227	};
	228
e55222ef GL	229	static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
	230	struct soc_camera_ops *ops, int id)
	231	{
	232	int i;
	233
	234	for (i = 0; i < ops->num_controls; i++)
	235	if (ops->controls[i].id == id)
	236	return &ops->controls[i];
	237
	238	return NULL;
	239	}
	240
ad5f2e85 GL	241	#define SOCAM_MASTER (1 << 0)
	242	#define SOCAM_SLAVE (1 << 1)
	243	#define SOCAM_HSYNC_ACTIVE_HIGH (1 << 2)
	244	#define SOCAM_HSYNC_ACTIVE_LOW (1 << 3)
	245	#define SOCAM_VSYNC_ACTIVE_HIGH (1 << 4)
	246	#define SOCAM_VSYNC_ACTIVE_LOW (1 << 5)
042d8790 GL	247	#define SOCAM_DATAWIDTH_4 (1 << 6)
	248	#define SOCAM_DATAWIDTH_8 (1 << 7)
	249	#define SOCAM_DATAWIDTH_9 (1 << 8)
	250	#define SOCAM_DATAWIDTH_10 (1 << 9)
	251	#define SOCAM_DATAWIDTH_15 (1 << 10)
	252	#define SOCAM_DATAWIDTH_16 (1 << 11)
	253	#define SOCAM_PCLK_SAMPLE_RISING (1 << 12)
	254	#define SOCAM_PCLK_SAMPLE_FALLING (1 << 13)
	255	#define SOCAM_DATA_ACTIVE_HIGH (1 << 14)
	256	#define SOCAM_DATA_ACTIVE_LOW (1 << 15)
b7ccdba0 GL	257	#define SOCAM_MIPI_1LANE (1 << 16)
	258	#define SOCAM_MIPI_2LANE (1 << 17)
	259	#define SOCAM_MIPI_3LANE (1 << 18)
	260	#define SOCAM_MIPI_4LANE (1 << 19)
	261	#define SOCAM_MIPI (SOCAM_MIPI_1LANE \| SOCAM_MIPI_2LANE \| \
	262	SOCAM_MIPI_3LANE \| SOCAM_MIPI_4LANE)
042d8790 GL	263
	264	#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 \| SOCAM_DATAWIDTH_8 \| \
	265	SOCAM_DATAWIDTH_9 \| SOCAM_DATAWIDTH_10 \| \
	266	SOCAM_DATAWIDTH_15 \| SOCAM_DATAWIDTH_16)
ad5f2e85 GL	267
	268	static inline unsigned long soc_camera_bus_param_compatible(
	269	unsigned long camera_flags, unsigned long bus_flags)
	270	{
f7f41483	271	unsigned long common_flags, hsync, vsync, pclk, data, buswidth, mode;
ee1b6f4b	272	unsigned long mipi;
ad5f2e85 GL	273
	274	common_flags = camera_flags & bus_flags;
	275
	276	hsync = common_flags & (SOCAM_HSYNC_ACTIVE_HIGH \| SOCAM_HSYNC_ACTIVE_LOW);
	277	vsync = common_flags & (SOCAM_VSYNC_ACTIVE_HIGH \| SOCAM_VSYNC_ACTIVE_LOW);
	278	pclk = common_flags & (SOCAM_PCLK_SAMPLE_RISING \| SOCAM_PCLK_SAMPLE_FALLING);
f7f41483 GL	279	data = common_flags & (SOCAM_DATA_ACTIVE_HIGH \| SOCAM_DATA_ACTIVE_LOW);
	280	mode = common_flags & (SOCAM_MASTER \| SOCAM_SLAVE);
	281	buswidth = common_flags & SOCAM_DATAWIDTH_MASK;
ee1b6f4b	282	mipi = common_flags & SOCAM_MIPI;
ad5f2e85	283
ee1b6f4b	284	return ((!hsync \|\| !vsync \|\| !pclk \|\| !data \|\| !mode \|\| !buswidth) && !mipi) ? 0 :
f7f41483	285	common_flags;
ad5f2e85	286	}
e55222ef	287
e26b3144 MN	288	static inline void soc_camera_limit_side(int start, int length,
e26b3144 MN	289	unsigned int start_min,
6a6c8786 GL	290	unsigned int length_min, unsigned int length_max)
	291	{
	292	if (*length < length_min)
	293	*length = length_min;
	294	else if (*length > length_max)
	295	*length = length_max;
	296
	297	if (*start < start_min)
	298	*start = start_min;
	299	else if (start > start_min + length_max - length)
	300	start = start_min + length_max - length;
	301	}
	302
bd73b36f GL	303	extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
	304	unsigned long flags);
	305
4f9fb5ed MCC	306	/* This is only temporary here - until v4l2-subdev begins to link to video_device */
	307	#include <linux/i2c.h>
	308	static inline struct video_device soc_camera_i2c_to_vdev(struct i2c_client client)
	309	{
	310	struct soc_camera_device *icd = client->dev.platform_data;
	311	return icd->vdev;
	312	}
	313
8eb4476d GL	314	static inline struct soc_camera_device soc_camera_from_vb2q(struct vb2_queue vq)
	315	{
	316	return container_of(vq, struct soc_camera_device, vb2_vidq);
	317	}
	318
	319	static inline struct soc_camera_device soc_camera_from_vbq(struct videobuf_queue vq)
	320	{
	321	return container_of(vq, struct soc_camera_device, vb_vidq);
	322	}
	323
592c2aba GL	324	void soc_camera_lock(struct vb2_queue *vq);
	325	void soc_camera_unlock(struct vb2_queue *vq);
	326
e55222ef	327	#endif