X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Fmedia%2Fsoc_camera.h;h=7440d9250665489f2699fc1557bc1a7ae655b337;hb=b01676005446ad51a32bb00577647c7aae7d2624;hp=69aba7188e44c0ce7969bf299e5e5587765d9aa9;hpb=e55222ef27a2390d8abce27a3ce2d4c719ad5f1b;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h index 69aba718..7440d92 100644 --- a/include/media/soc_camera.h +++ b/include/media/soc_camera.h @@ -12,8 +12,10 @@ #ifndef SOC_CAMERA_H #define SOC_CAMERA_H +#include +#include #include -#include +#include struct soc_camera_device { struct list_head list; @@ -34,13 +36,20 @@ struct soc_camera_device { unsigned short exposure; unsigned char iface; /* Host number */ unsigned char devnum; /* Device number per host */ - unsigned char cached_datawidth; /* See comment in .c */ + 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; - int (*probe)(struct soc_camera_device *icd); - void (*remove)(struct soc_camera_device *icd); + 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 mutex video_lock; /* Protects device data */ }; struct soc_camera_file { @@ -52,26 +61,45 @@ struct soc_camera_host { struct list_head list; struct device dev; unsigned char nr; /* Host number */ - size_t msize; - struct videobuf_queue_ops *vbq_ops; - struct module *owner; void *priv; - char *drv_name; + 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 (*set_capture_format)(struct soc_camera_device *, __u32, - struct v4l2_rect *); - int (*try_fmt_cap)(struct soc_camera_host *, struct v4l2_format *); + 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) @@ -84,8 +112,7 @@ 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, - struct module *owner); +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); @@ -93,35 +120,87 @@ 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 { - char *name; + 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_capture_format)(struct soc_camera_device *, __u32, - struct v4l2_rect *, unsigned int); - int (*try_fmt_cap)(struct soc_camera_device *, struct v4l2_format *); + 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 *); + struct v4l2_dbg_chip_ident *); + int (*set_std)(struct soc_camera_device *, v4l2_std_id *); + int (*enum_input)(struct soc_camera_device *, struct v4l2_input *); #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 *); + int (*get_register)(struct soc_camera_device *, struct v4l2_dbg_register *); + int (*set_register)(struct soc_camera_device *, struct v4l2_dbg_register *); #endif - const struct soc_camera_data_format *formats; - int num_formats; 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; - unsigned int(*get_datawidth)(struct soc_camera_device *icd); +}; + +#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( @@ -136,12 +215,42 @@ static inline struct v4l2_queryctrl const *soc_camera_find_qctrl( return NULL; } -#define IS_MASTER (1<<0) -#define IS_HSYNC_ACTIVE_HIGH (1<<1) -#define IS_VSYNC_ACTIVE_HIGH (1<<2) -#define IS_DATAWIDTH_8 (1<<3) -#define IS_DATAWIDTH_9 (1<<4) -#define IS_DATAWIDTH_10 (1<<5) -#define IS_PCLK_SAMPLE_RISING (1<<6) +#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; + + 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