| /* |
| * 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/videodev2.h> |
| #include <media/videobuf-core.h> |
| #include <linux/pm.h> |
| |
| struct soc_camera_device { |
| struct list_head list; |
| struct device dev; |
| struct device *control; |
| unsigned short width; /* Current window */ |
| unsigned short height; /* sizes */ |
| unsigned short x_min; /* Camera capabilities */ |
| unsigned short y_min; |
| unsigned short x_current; /* Current window location */ |
| unsigned short y_current; |
| unsigned short width_min; |
| unsigned short width_max; |
| unsigned short height_min; |
| unsigned short height_max; |
| unsigned short y_skip_top; /* Lines to skip at the top */ |
| unsigned short gain; |
| unsigned short exposure; |
| unsigned char iface; /* Host number */ |
| unsigned char devnum; /* Device number per host */ |
| unsigned char buswidth; /* See comment in .c */ |
| 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; |
| struct module *owner; |
| void *host_priv; /* per-device host private data */ |
| /* soc_camera.c private count. Only accessed with video_lock held */ |
| int use_count; |
| }; |
| |
| struct soc_camera_file { |
| struct soc_camera_device *icd; |
| struct videobuf_queue vb_vidq; |
| }; |
| |
| struct soc_camera_host { |
| struct list_head list; |
| struct device dev; |
| 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 *); |
| int (*get_formats)(struct soc_camera_device *, int, |
| struct soc_camera_format_xlate *); |
| int (*set_fmt)(struct soc_camera_device *, __u32, struct v4l2_rect *); |
| 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); |
| 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 soc_camera_link { |
| /* Camera bus id, used to match a camera and a bus */ |
| int bus_id; |
| /* GPIO number to switch between 8 and 10 bit modes */ |
| unsigned int gpio; |
| /* Per camera SOCAM_SENSOR_* bus flags */ |
| unsigned long flags; |
| /* Optional callbacks to power on or off and reset the sensor */ |
| int (*power)(struct device *, int); |
| int (*reset)(struct device *); |
| }; |
| |
| static inline struct soc_camera_device *to_soc_camera_dev(struct device *dev) |
| { |
| return container_of(dev, struct soc_camera_device, dev); |
| } |
| |
| static inline struct soc_camera_host *to_soc_camera_host(struct device *dev) |
| { |
| return container_of(dev, struct soc_camera_host, dev); |
| } |
| |
| extern int soc_camera_host_register(struct soc_camera_host *ici); |
| extern void soc_camera_host_unregister(struct soc_camera_host *ici); |
| extern int soc_camera_device_register(struct soc_camera_device *icd); |
| extern void soc_camera_device_unregister(struct soc_camera_device *icd); |
| |
| extern int soc_camera_video_start(struct soc_camera_device *icd); |
| extern void soc_camera_video_stop(struct soc_camera_device *icd); |
| |
| extern const struct soc_camera_data_format *soc_camera_format_by_fourcc( |
| struct soc_camera_device *icd, unsigned int fourcc); |
| extern 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 { |
| struct module *owner; |
| int (*probe)(struct soc_camera_device *); |
| void (*remove)(struct soc_camera_device *); |
| int (*suspend)(struct soc_camera_device *, pm_message_t state); |
| int (*resume)(struct soc_camera_device *); |
| int (*init)(struct soc_camera_device *); |
| int (*release)(struct soc_camera_device *); |
| int (*start_capture)(struct soc_camera_device *); |
| int (*stop_capture)(struct soc_camera_device *); |
| int (*set_fmt)(struct soc_camera_device *, __u32, struct v4l2_rect *); |
| int (*try_fmt)(struct soc_camera_device *, struct v4l2_format *); |
| unsigned long (*query_bus_param)(struct soc_camera_device *); |
| int (*set_bus_param)(struct soc_camera_device *, unsigned long); |
| int (*get_chip_id)(struct soc_camera_device *, |
| struct v4l2_chip_ident *); |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| int (*get_register)(struct soc_camera_device *, struct v4l2_register *); |
| int (*set_register)(struct soc_camera_device *, struct v4l2_register *); |
| #endif |
| int (*get_control)(struct soc_camera_device *, struct v4l2_control *); |
| int (*set_control)(struct soc_camera_device *, struct v4l2_control *); |
| const struct v4l2_queryctrl *controls; |
| int num_controls; |
| }; |
| |
| 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_8 (1 << 6) |
| #define SOCAM_DATAWIDTH_9 (1 << 7) |
| #define SOCAM_DATAWIDTH_10 (1 << 8) |
| #define SOCAM_DATAWIDTH_16 (1 << 9) |
| #define SOCAM_PCLK_SAMPLE_RISING (1 << 10) |
| #define SOCAM_PCLK_SAMPLE_FALLING (1 << 11) |
| |
| #define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_9 | \ |
| SOCAM_DATAWIDTH_10 | 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; |
| |
| 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); |
| |
| return (!hsync || !vsync || !pclk) ? 0 : common_flags; |
| } |
| |
| extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl, |
| unsigned long flags); |
| |
| #endif |