[mirror_ubuntu-zesty-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/device.h>
#include <linux/mutex.h>
#include <linux/pm.h>
#include <linux/videodev2.h>
#include <media/videobuf-core.h>
#include <media/v4l2-device.h>

extern struct bus_type soc_camera_bus_type;

struct file;

struct soc_camera_device {
	struct list_head list;
	struct device dev;
	struct device *pdev;		/* Platform device */
	s32 user_width;
	s32 user_height;
	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 */
	struct videobuf_queue vb_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 *);
	int (*suspend)(struct soc_camera_device *, pm_message_t);
	int (*resume)(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 *);
	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 (*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 *);
	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 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;

	/*
	 * For non-I2C devices platform platform has to provide methods to
	 * add a device to the system and to remove
	 */
	int (*add_device)(struct soc_camera_link *, struct device *);
	void (*del_device)(struct soc_camera_link *);
	/* 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_device *to_soc_camera_dev(
	const struct device *dev)
{
	return container_of(dev, struct soc_camera_device, dev);
}

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->dev.platform_data;
}

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

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 {
	int (*suspend)(struct soc_camera_device *, pm_message_t state);
	int (*resume)(struct soc_camera_device *);
	unsigned long (*query_bus_param)(struct soc_camera_device *);
	int (*set_bus_param)(struct soc_camera_device *, unsigned long);
	int (*enum_input)(struct soc_camera_device *, struct v4l2_input *);
	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_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;

	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;

	return (!hsync || !vsync || !pclk || !data || !mode || !buswidth) ? 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;
}

#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>
979ea1dd	20	#include <media/v4l2-device.h>
e55222ef	21
52d268a3 GL	22	extern struct bus_type soc_camera_bus_type;
52d268a3 GL	23
57bee29d GL	24	struct file;
57bee29d GL	25
e55222ef GL	26	struct soc_camera_device {
	27	struct list_head list;
	28	struct device dev;
979ea1dd	29	struct device pdev; / Platform device */
6a6c8786 GL	30	s32 user_width;
6a6c8786 GL	31	s32 user_height;
760697be	32	enum v4l2_colorspace colorspace;
e55222ef GL	33	unsigned char iface; /* Host number */
e55222ef GL	34	unsigned char devnum; /* Device number per host */
a9bef518	35	struct soc_camera_sense sense; / See comment in struct definition */
e55222ef GL	36	struct soc_camera_ops *ops;
e55222ef GL	37	struct video_device *vdev;
760697be	38	const struct soc_camera_format_xlate *current_fmt;
c2786ad2 GL	39	struct soc_camera_format_xlate *user_formats;
c2786ad2 GL	40	int num_user_formats;
025c18a1	41	enum v4l2_field field; /* Preserve field over close() */
1c3bb743 GL	42	void host_priv; / Per-device host private data */
1c3bb743 GL	43	/* soc_camera.c private count. Only accessed with .video_lock held */
9dc4e48f	44	int use_count;
1c3bb743	45	struct mutex video_lock; /* Protects device data */
57bee29d	46	struct file streamer; / stream owner */
e55222ef GL	47	struct videobuf_queue vb_vidq;
	48	};
	49
	50	struct soc_camera_host {
979ea1dd	51	struct v4l2_device v4l2_dev;
e55222ef	52	struct list_head list;
e55222ef	53	unsigned char nr; /* Host number */
e55222ef	54	void *priv;
af128a10	55	const char *drv_name;
b8d9904c GL	56	struct soc_camera_host_ops *ops;
	57	};
	58
	59	struct soc_camera_host_ops {
	60	struct module *owner;
e55222ef GL	61	int (add)(struct soc_camera_device );
e55222ef GL	62	void (remove)(struct soc_camera_device );
c2786ad2	63	int (suspend)(struct soc_camera_device , pm_message_t);
2e521061	64	int (resume)(struct soc_camera_device );
fa48984e GL	65	/*
	66	* .get_formats() is called for each client device format, but
	67	* .put_formats() is only called once. Further, if any of the calls to
	68	* .get_formats() fail, .put_formats() will not be called at all, the
	69	* failing .get_formats() must then clean up internally.
	70	*/
3805f201	71	int (get_formats)(struct soc_camera_device , unsigned int,
c2786ad2	72	struct soc_camera_format_xlate *);
fa48984e	73	void (put_formats)(struct soc_camera_device );
6a6c8786 GL	74	int (cropcap)(struct soc_camera_device , struct v4l2_cropcap *);
6a6c8786 GL	75	int (get_crop)(struct soc_camera_device , struct v4l2_crop *);
08590b96	76	int (set_crop)(struct soc_camera_device , struct v4l2_crop *);
09e231b3	77	int (set_fmt)(struct soc_camera_device , struct v4l2_format *);
d8fac217	78	int (try_fmt)(struct soc_camera_device , struct v4l2_format *);
a034d1b7	79	void (init_videobuf)(struct videobuf_queue ,
092d3921	80	struct soc_camera_device *);
57bee29d	81	int (reqbufs)(struct soc_camera_device , struct v4l2_requestbuffers *);
e55222ef	82	int (querycap)(struct soc_camera_host , struct v4l2_capability *);
ad5f2e85	83	int (set_bus_param)(struct soc_camera_device , __u32);
2840d249 GL	84	int (get_ctrl)(struct soc_camera_device , struct v4l2_control *);
2840d249 GL	85	int (set_ctrl)(struct soc_camera_device , struct v4l2_control *);
c9f6ef69 GL	86	int (get_parm)(struct soc_camera_device , struct v4l2_streamparm *);
c9f6ef69 GL	87	int (set_parm)(struct soc_camera_device , struct v4l2_streamparm *);
e55222ef	88	unsigned int (poll)(struct file , poll_table *);
2840d249 GL	89	const struct v4l2_queryctrl *controls;
2840d249 GL	90	int num_controls;
e55222ef GL	91	};
e55222ef GL	92
bd73b36f GL	93	#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)
	94	#define SOCAM_SENSOR_INVERT_MCLK (1 << 1)
	95	#define SOCAM_SENSOR_INVERT_HSYNC (1 << 2)
	96	#define SOCAM_SENSOR_INVERT_VSYNC (1 << 3)
	97	#define SOCAM_SENSOR_INVERT_DATA (1 << 4)
	98
0fd327bd GL	99	struct i2c_board_info;
0fd327bd GL	100
e55222ef GL	101	struct soc_camera_link {
	102	/* Camera bus id, used to match a camera and a bus */
	103	int bus_id;
bd73b36f GL	104	/* Per camera SOCAM_SENSOR_* bus flags */
bd73b36f GL	105	unsigned long flags;
0fd327bd GL	106	int i2c_adapter_id;
	107	struct i2c_board_info *board_info;
	108	const char *module_name;
3fd7ceff GL	109	void *priv;
3fd7ceff GL	110
c41debaf GL	111	/*
	112	* For non-I2C devices platform platform has to provide methods to
	113	* add a device to the system and to remove
	114	*/
	115	int (add_device)(struct soc_camera_link , struct device *);
	116	void (del_device)(struct soc_camera_link );
81034663 SH	117	/* Optional callbacks to power on or off and reset the sensor */
	118	int (power)(struct device , int);
	119	int (reset)(struct device );
28f59339 SH	120	/*
	121	* some platforms may support different data widths than the sensors
	122	* native ones due to different data line routing. Let the board code
	123	* overwrite the width flags.
	124	*/
	125	int (set_bus_param)(struct soc_camera_link , unsigned long flags);
	126	unsigned long (query_bus_param)(struct soc_camera_link );
594bb46d	127	void (free_bus)(struct soc_camera_link );
e55222ef GL	128	};
e55222ef GL	129
96c75399 GL	130	static inline struct soc_camera_device *to_soc_camera_dev(
96c75399 GL	131	const struct device *dev)
e55222ef GL	132	{
	133	return container_of(dev, struct soc_camera_device, dev);
	134	}
	135
96c75399 GL	136	static inline struct soc_camera_host *to_soc_camera_host(
96c75399 GL	137	const struct device *dev)
e55222ef	138	{
979ea1dd GL	139	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
	140
	141	return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
e55222ef GL	142	}
e55222ef GL	143
96c75399 GL	144	static inline struct soc_camera_link *to_soc_camera_link(
96c75399 GL	145	const struct soc_camera_device *icd)
40e2e092 GL	146	{
	147	return icd->dev.platform_data;
	148	}
e55222ef	149
96c75399 GL	150	static inline struct device *to_soc_camera_control(
96c75399 GL	151	const struct soc_camera_device *icd)
40e2e092 GL	152	{
	153	return dev_get_drvdata(&icd->dev);
	154	}
e55222ef	155
96c75399 GL	156	static inline struct v4l2_subdev *soc_camera_to_subdev(
96c75399 GL	157	const struct soc_camera_device *icd)
c9c1f1c0 GL	158	{
	159	struct device *control = to_soc_camera_control(icd);
	160	return dev_get_drvdata(control);
	161	}
	162
40e2e092 GL	163	int soc_camera_host_register(struct soc_camera_host *ici);
	164	void soc_camera_host_unregister(struct soc_camera_host *ici);
	165
40e2e092	166	const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
c2786ad2	167	struct soc_camera_device *icd, unsigned int fourcc);
25c4d74e	168
c2786ad2 GL	169	/**
c2786ad2 GL	170	* struct soc_camera_format_xlate - match between host and sensor formats
760697be GL	171	* @code: code of a sensor provided format
760697be GL	172	* @host_fmt: host format after host translation from code
c2786ad2 GL	173	*
	174	* Host and sensor translation structure. Used in table of host and sensor
	175	* formats matchings in soc_camera_device. A host can override the generic list
	176	* generation by implementing get_formats(), and use it for format checks and
	177	* format setup.
	178	*/
	179	struct soc_camera_format_xlate {
760697be GL	180	enum v4l2_mbus_pixelcode code;
760697be GL	181	const struct soc_mbus_pixelfmt *host_fmt;
c2786ad2 GL	182	};
c2786ad2 GL	183
e55222ef	184	struct soc_camera_ops {
2e521061 RJ	185	int (suspend)(struct soc_camera_device , pm_message_t state);
2e521061 RJ	186	int (resume)(struct soc_camera_device );
ad5f2e85 GL	187	unsigned long (query_bus_param)(struct soc_camera_device );
ad5f2e85 GL	188	int (set_bus_param)(struct soc_camera_device , unsigned long);
34d359db	189	int (enum_input)(struct soc_camera_device , struct v4l2_input *);
e55222ef GL	190	const struct v4l2_queryctrl *controls;
e55222ef GL	191	int num_controls;
e55222ef GL	192	};
e55222ef 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
e55222ef GL	220	static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
	221	struct soc_camera_ops *ops, int id)
	222	{
	223	int i;
	224
	225	for (i = 0; i < ops->num_controls; i++)
	226	if (ops->controls[i].id == id)
	227	return &ops->controls[i];
	228
	229	return NULL;
	230	}
	231
ad5f2e85 GL	232	#define SOCAM_MASTER (1 << 0)
	233	#define SOCAM_SLAVE (1 << 1)
	234	#define SOCAM_HSYNC_ACTIVE_HIGH (1 << 2)
	235	#define SOCAM_HSYNC_ACTIVE_LOW (1 << 3)
	236	#define SOCAM_VSYNC_ACTIVE_HIGH (1 << 4)
	237	#define SOCAM_VSYNC_ACTIVE_LOW (1 << 5)
042d8790 GL	238	#define SOCAM_DATAWIDTH_4 (1 << 6)
	239	#define SOCAM_DATAWIDTH_8 (1 << 7)
	240	#define SOCAM_DATAWIDTH_9 (1 << 8)
	241	#define SOCAM_DATAWIDTH_10 (1 << 9)
	242	#define SOCAM_DATAWIDTH_15 (1 << 10)
	243	#define SOCAM_DATAWIDTH_16 (1 << 11)
	244	#define SOCAM_PCLK_SAMPLE_RISING (1 << 12)
	245	#define SOCAM_PCLK_SAMPLE_FALLING (1 << 13)
	246	#define SOCAM_DATA_ACTIVE_HIGH (1 << 14)
	247	#define SOCAM_DATA_ACTIVE_LOW (1 << 15)
	248
	249	#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 \| SOCAM_DATAWIDTH_8 \| \
	250	SOCAM_DATAWIDTH_9 \| SOCAM_DATAWIDTH_10 \| \
	251	SOCAM_DATAWIDTH_15 \| SOCAM_DATAWIDTH_16)
ad5f2e85 GL	252
	253	static inline unsigned long soc_camera_bus_param_compatible(
	254	unsigned long camera_flags, unsigned long bus_flags)
	255	{
f7f41483	256	unsigned long common_flags, hsync, vsync, pclk, data, buswidth, mode;
ad5f2e85 GL	257
	258	common_flags = camera_flags & bus_flags;
	259
	260	hsync = common_flags & (SOCAM_HSYNC_ACTIVE_HIGH \| SOCAM_HSYNC_ACTIVE_LOW);
	261	vsync = common_flags & (SOCAM_VSYNC_ACTIVE_HIGH \| SOCAM_VSYNC_ACTIVE_LOW);
	262	pclk = common_flags & (SOCAM_PCLK_SAMPLE_RISING \| SOCAM_PCLK_SAMPLE_FALLING);
f7f41483 GL	263	data = common_flags & (SOCAM_DATA_ACTIVE_HIGH \| SOCAM_DATA_ACTIVE_LOW);
	264	mode = common_flags & (SOCAM_MASTER \| SOCAM_SLAVE);
	265	buswidth = common_flags & SOCAM_DATAWIDTH_MASK;
ad5f2e85	266
f7f41483 GL	267	return (!hsync \|\| !vsync \|\| !pclk \|\| !data \|\| !mode \|\| !buswidth) ? 0 :
f7f41483 GL	268	common_flags;
ad5f2e85	269	}
e55222ef	270
e26b3144 MN	271	static inline void soc_camera_limit_side(int start, int length,
e26b3144 MN	272	unsigned int start_min,
6a6c8786 GL	273	unsigned int length_min, unsigned int length_max)
	274	{
	275	if (*length < length_min)
	276	*length = length_min;
	277	else if (*length > length_max)
	278	*length = length_max;
	279
	280	if (*start < start_min)
	281	*start = start_min;
	282	else if (start > start_min + length_max - length)
	283	start = start_min + length_max - length;
	284	}
	285
bd73b36f GL	286	extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
	287	unsigned long flags);
	288
4f9fb5ed MCC	289	/* This is only temporary here - until v4l2-subdev begins to link to video_device */
	290	#include <linux/i2c.h>
	291	static inline struct video_device soc_camera_i2c_to_vdev(struct i2c_client client)
	292	{
	293	struct soc_camera_device *icd = client->dev.platform_data;
	294	return icd->vdev;
	295	}
	296
e55222ef	297	#endif