[linux-2.6-block.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/mutex.h>
#include <linux/pm.h>
#include <linux/videodev2.h>
#include <media/videobuf-core.h>
#include <media/v4l2-device.h>

struct soc_camera_device {
	struct list_head list;
	struct device dev;
	struct device *pdev;		/* Platform device */
	s32 user_width;
	s32 user_height;
	unsigned short width_min;
	unsigned short height_min;
	unsigned short y_skip_top;	/* Lines to skip at the top */
	unsigned char iface;		/* Host number */
	unsigned char devnum;		/* Device number per host */
	unsigned char buswidth;		/* See comment in .c */
	struct soc_camera_sense *sense;	/* See comment in struct definition */
	struct soc_camera_ops *ops;
	struct video_device *vdev;
	const struct soc_camera_data_format *current_fmt;
	const struct soc_camera_data_format *formats;
	int num_formats;
	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 soc_camera_file {
	struct soc_camera_device *icd;
	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 *, 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_file *, 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 *);
	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;
	/*
	 * 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_data_format *soc_camera_format_by_fourcc(
	struct soc_camera_device *icd, unsigned int fourcc);
const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
	struct soc_camera_device *icd, unsigned int fourcc);

struct soc_camera_data_format {
	const char *name;
	unsigned int depth;
	__u32 fourcc;
	enum v4l2_colorspace colorspace;
};

/**
 * struct soc_camera_format_xlate - match between host and sensor formats
 * @cam_fmt: sensor format provided by the sensor
 * @host_fmt: host format after host translation from cam_fmt
 * @buswidth: bus width for this format
 *
 * 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 {
	const struct soc_camera_data_format *cam_fmt;
	const struct soc_camera_data_format *host_fmt;
	unsigned char buswidth;
};

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(unsigned int *start,
		unsigned 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);

#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
1c3bb743 GL	15	#include <linux/mutex.h>
1c3bb743 GL	16	#include <linux/pm.h>
e55222ef	17	#include <linux/videodev2.h>
092d3921	18	#include <media/videobuf-core.h>
979ea1dd	19	#include <media/v4l2-device.h>
e55222ef GL	20
	21	struct soc_camera_device {
	22	struct list_head list;
	23	struct device dev;
979ea1dd	24	struct device pdev; / Platform device */
6a6c8786 GL	25	s32 user_width;
6a6c8786 GL	26	s32 user_height;
e55222ef	27	unsigned short width_min;
e55222ef	28	unsigned short height_min;
e55222ef	29	unsigned short y_skip_top; /* Lines to skip at the top */
e55222ef GL	30	unsigned char iface; /* Host number */
e55222ef GL	31	unsigned char devnum; /* Device number per host */
ad5f2e85	32	unsigned char buswidth; /* See comment in .c */
a9bef518	33	struct soc_camera_sense sense; / See comment in struct definition */
e55222ef GL	34	struct soc_camera_ops *ops;
	35	struct video_device *vdev;
	36	const struct soc_camera_data_format *current_fmt;
26f1b942 GL	37	const struct soc_camera_data_format *formats;
26f1b942 GL	38	int num_formats;
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 */
e55222ef GL	46	};
	47
	48	struct soc_camera_file {
	49	struct soc_camera_device *icd;
	50	struct videobuf_queue vb_vidq;
	51	};
	52
	53	struct soc_camera_host {
979ea1dd	54	struct v4l2_device v4l2_dev;
e55222ef	55	struct list_head list;
e55222ef	56	unsigned char nr; /* Host number */
e55222ef	57	void *priv;
af128a10	58	const char *drv_name;
b8d9904c GL	59	struct soc_camera_host_ops *ops;
	60	};
	61
	62	struct soc_camera_host_ops {
	63	struct module *owner;
e55222ef GL	64	int (add)(struct soc_camera_device );
e55222ef GL	65	void (remove)(struct soc_camera_device );
c2786ad2	66	int (suspend)(struct soc_camera_device , pm_message_t);
2e521061	67	int (resume)(struct soc_camera_device );
fa48984e GL	68	/*
	69	* .get_formats() is called for each client device format, but
	70	* .put_formats() is only called once. Further, if any of the calls to
	71	* .get_formats() fail, .put_formats() will not be called at all, the
	72	* failing .get_formats() must then clean up internally.
	73	*/
c2786ad2 GL	74	int (get_formats)(struct soc_camera_device , int,
c2786ad2 GL	75	struct soc_camera_format_xlate *);
fa48984e	76	void (put_formats)(struct soc_camera_device );
6a6c8786 GL	77	int (cropcap)(struct soc_camera_device , struct v4l2_cropcap *);
6a6c8786 GL	78	int (get_crop)(struct soc_camera_device , struct v4l2_crop *);
08590b96	79	int (set_crop)(struct soc_camera_device , struct v4l2_crop *);
09e231b3	80	int (set_fmt)(struct soc_camera_device , struct v4l2_format *);
d8fac217	81	int (try_fmt)(struct soc_camera_device , struct v4l2_format *);
a034d1b7	82	void (init_videobuf)(struct videobuf_queue ,
092d3921	83	struct soc_camera_device *);
e55222ef GL	84	int (reqbufs)(struct soc_camera_file , struct v4l2_requestbuffers *);
e55222ef GL	85	int (querycap)(struct soc_camera_host , struct v4l2_capability *);
ad5f2e85	86	int (set_bus_param)(struct soc_camera_device , __u32);
2840d249 GL	87	int (get_ctrl)(struct soc_camera_device , struct v4l2_control *);
2840d249 GL	88	int (set_ctrl)(struct soc_camera_device , struct v4l2_control *);
e55222ef	89	unsigned int (poll)(struct file , poll_table *);
2840d249 GL	90	const struct v4l2_queryctrl *controls;
2840d249 GL	91	int num_controls;
e55222ef GL	92	};
e55222ef GL	93
bd73b36f GL	94	#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)
	95	#define SOCAM_SENSOR_INVERT_MCLK (1 << 1)
	96	#define SOCAM_SENSOR_INVERT_HSYNC (1 << 2)
	97	#define SOCAM_SENSOR_INVERT_VSYNC (1 << 3)
	98	#define SOCAM_SENSOR_INVERT_DATA (1 << 4)
	99
0fd327bd GL	100	struct i2c_board_info;
0fd327bd GL	101
e55222ef GL	102	struct soc_camera_link {
	103	/* Camera bus id, used to match a camera and a bus */
	104	int bus_id;
bd73b36f GL	105	/* Per camera SOCAM_SENSOR_* bus flags */
bd73b36f GL	106	unsigned long flags;
0fd327bd GL	107	int i2c_adapter_id;
	108	struct i2c_board_info *board_info;
	109	const char *module_name;
c41debaf GL	110	/*
	111	* For non-I2C devices platform platform has to provide methods to
	112	* add a device to the system and to remove
	113	*/
	114	int (add_device)(struct soc_camera_link , struct device *);
	115	void (del_device)(struct soc_camera_link );
81034663 SH	116	/* Optional callbacks to power on or off and reset the sensor */
	117	int (power)(struct device , int);
	118	int (reset)(struct device );
28f59339 SH	119	/*
	120	* some platforms may support different data widths than the sensors
	121	* native ones due to different data line routing. Let the board code
	122	* overwrite the width flags.
	123	*/
	124	int (set_bus_param)(struct soc_camera_link , unsigned long flags);
	125	unsigned long (query_bus_param)(struct soc_camera_link );
594bb46d	126	void (free_bus)(struct soc_camera_link );
e55222ef GL	127	};
e55222ef GL	128
96c75399 GL	129	static inline struct soc_camera_device *to_soc_camera_dev(
96c75399 GL	130	const struct device *dev)
e55222ef GL	131	{
	132	return container_of(dev, struct soc_camera_device, dev);
	133	}
	134
96c75399 GL	135	static inline struct soc_camera_host *to_soc_camera_host(
96c75399 GL	136	const struct device *dev)
e55222ef	137	{
979ea1dd GL	138	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
	139
	140	return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
e55222ef GL	141	}
e55222ef GL	142
96c75399 GL	143	static inline struct soc_camera_link *to_soc_camera_link(
96c75399 GL	144	const struct soc_camera_device *icd)
40e2e092 GL	145	{
	146	return icd->dev.platform_data;
	147	}
e55222ef	148
96c75399 GL	149	static inline struct device *to_soc_camera_control(
96c75399 GL	150	const struct soc_camera_device *icd)
40e2e092 GL	151	{
	152	return dev_get_drvdata(&icd->dev);
	153	}
e55222ef	154
96c75399 GL	155	static inline struct v4l2_subdev *soc_camera_to_subdev(
96c75399 GL	156	const struct soc_camera_device *icd)
c9c1f1c0 GL	157	{
	158	struct device *control = to_soc_camera_control(icd);
	159	return dev_get_drvdata(control);
	160	}
	161
40e2e092 GL	162	int soc_camera_host_register(struct soc_camera_host *ici);
	163	void soc_camera_host_unregister(struct soc_camera_host *ici);
	164
40e2e092	165	const struct soc_camera_data_format *soc_camera_format_by_fourcc(
25c4d74e	166	struct soc_camera_device *icd, unsigned int fourcc);
40e2e092	167	const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
c2786ad2	168	struct soc_camera_device *icd, unsigned int fourcc);
25c4d74e	169
e55222ef	170	struct soc_camera_data_format {
af128a10	171	const char *name;
e55222ef GL	172	unsigned int depth;
	173	__u32 fourcc;
	174	enum v4l2_colorspace colorspace;
	175	};
	176
c2786ad2 GL	177	/**
	178	* struct soc_camera_format_xlate - match between host and sensor formats
	179	* @cam_fmt: sensor format provided by the sensor
	180	* @host_fmt: host format after host translation from cam_fmt
	181	* @buswidth: bus width for this format
	182	*
	183	* Host and sensor translation structure. Used in table of host and sensor
	184	* formats matchings in soc_camera_device. A host can override the generic list
	185	* generation by implementing get_formats(), and use it for format checks and
	186	* format setup.
	187	*/
	188	struct soc_camera_format_xlate {
	189	const struct soc_camera_data_format *cam_fmt;
	190	const struct soc_camera_data_format *host_fmt;
	191	unsigned char buswidth;
	192	};
	193
e55222ef	194	struct soc_camera_ops {
2e521061 RJ	195	int (suspend)(struct soc_camera_device , pm_message_t state);
2e521061 RJ	196	int (resume)(struct soc_camera_device );
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);
34d359db	199	int (enum_input)(struct soc_camera_device , struct v4l2_input *);
e55222ef GL	200	const struct v4l2_queryctrl *controls;
e55222ef GL	201	int num_controls;
e55222ef GL	202	};
e55222ef GL	203
a9bef518 GL	204	#define SOCAM_SENSE_PCLK_CHANGED (1 << 0)
	205
	206	/**
	207	* This struct can be attached to struct soc_camera_device by the host driver
	208	* to request sense from the camera, for example, when calling .set_fmt(). The
	209	* host then can check which flags are set and verify respective values if any.
	210	* For example, if SOCAM_SENSE_PCLK_CHANGED is set, it means, pixclock has
	211	* changed during this operation. After completion the host should detach sense.
	212	*
	213	* @flags ored SOCAM_SENSE_* flags
	214	* @master_clock if the host wants to be informed about pixel-clock
	215	* change, it better set master_clock.
	216	* @pixel_clock_max maximum pixel clock frequency supported by the host,
	217	* camera is not allowed to exceed this.
	218	* @pixel_clock if the camera driver changed pixel clock during this
	219	* operation, it sets SOCAM_SENSE_PCLK_CHANGED, uses
	220	* master_clock to calculate the new pixel-clock and
	221	* sets this field.
	222	*/
	223	struct soc_camera_sense {
	224	unsigned long flags;
	225	unsigned long master_clock;
	226	unsigned long pixel_clock_max;
	227	unsigned long pixel_clock;
	228	};
	229
e55222ef GL	230	static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
	231	struct soc_camera_ops *ops, int id)
	232	{
	233	int i;
	234
	235	for (i = 0; i < ops->num_controls; i++)
	236	if (ops->controls[i].id == id)
	237	return &ops->controls[i];
	238
	239	return NULL;
	240	}
	241
ad5f2e85 GL	242	#define SOCAM_MASTER (1 << 0)
	243	#define SOCAM_SLAVE (1 << 1)
	244	#define SOCAM_HSYNC_ACTIVE_HIGH (1 << 2)
	245	#define SOCAM_HSYNC_ACTIVE_LOW (1 << 3)
	246	#define SOCAM_VSYNC_ACTIVE_HIGH (1 << 4)
	247	#define SOCAM_VSYNC_ACTIVE_LOW (1 << 5)
042d8790 GL	248	#define SOCAM_DATAWIDTH_4 (1 << 6)
	249	#define SOCAM_DATAWIDTH_8 (1 << 7)
	250	#define SOCAM_DATAWIDTH_9 (1 << 8)
	251	#define SOCAM_DATAWIDTH_10 (1 << 9)
	252	#define SOCAM_DATAWIDTH_15 (1 << 10)
	253	#define SOCAM_DATAWIDTH_16 (1 << 11)
	254	#define SOCAM_PCLK_SAMPLE_RISING (1 << 12)
	255	#define SOCAM_PCLK_SAMPLE_FALLING (1 << 13)
	256	#define SOCAM_DATA_ACTIVE_HIGH (1 << 14)
	257	#define SOCAM_DATA_ACTIVE_LOW (1 << 15)
	258
	259	#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 \| SOCAM_DATAWIDTH_8 \| \
	260	SOCAM_DATAWIDTH_9 \| SOCAM_DATAWIDTH_10 \| \
	261	SOCAM_DATAWIDTH_15 \| SOCAM_DATAWIDTH_16)
ad5f2e85 GL	262
	263	static inline unsigned long soc_camera_bus_param_compatible(
	264	unsigned long camera_flags, unsigned long bus_flags)
	265	{
f7f41483	266	unsigned long common_flags, hsync, vsync, pclk, data, buswidth, mode;
ad5f2e85 GL	267
	268	common_flags = camera_flags & bus_flags;
	269
	270	hsync = common_flags & (SOCAM_HSYNC_ACTIVE_HIGH \| SOCAM_HSYNC_ACTIVE_LOW);
	271	vsync = common_flags & (SOCAM_VSYNC_ACTIVE_HIGH \| SOCAM_VSYNC_ACTIVE_LOW);
	272	pclk = common_flags & (SOCAM_PCLK_SAMPLE_RISING \| SOCAM_PCLK_SAMPLE_FALLING);
f7f41483 GL	273	data = common_flags & (SOCAM_DATA_ACTIVE_HIGH \| SOCAM_DATA_ACTIVE_LOW);
	274	mode = common_flags & (SOCAM_MASTER \| SOCAM_SLAVE);
	275	buswidth = common_flags & SOCAM_DATAWIDTH_MASK;
ad5f2e85	276
f7f41483 GL	277	return (!hsync \|\| !vsync \|\| !pclk \|\| !data \|\| !mode \|\| !buswidth) ? 0 :
f7f41483 GL	278	common_flags;
ad5f2e85	279	}
e55222ef	280
6a6c8786 GL	281	static inline void soc_camera_limit_side(unsigned int *start,
	282	unsigned int *length, unsigned int start_min,
	283	unsigned int length_min, unsigned int length_max)
	284	{
	285	if (*length < length_min)
	286	*length = length_min;
	287	else if (*length > length_max)
	288	*length = length_max;
	289
	290	if (*start < start_min)
	291	*start = start_min;
	292	else if (start > start_min + length_max - length)
	293	start = start_min + length_max - length;
	294	}
	295
bd73b36f GL	296	extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
	297	unsigned long flags);
	298
e55222ef	299	#endif