X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Fmedia%2Fsoc_camera.h;h=3d74e60032ddf27ff02403bc18d8f98f9e8f5c7d;hb=1b62cbf2140df510a56d38b9d49df2aae95cd0d2;hp=d548de326722a657ae8a257fe35e214f6585f432;hpb=2e521061db61a35dd64ea85a1642f9a9dfde2872;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h index d548de3..3d74e60 100644 --- a/include/media/soc_camera.h +++ b/include/media/soc_camera.h @@ -12,38 +12,37 @@ #ifndef SOC_CAMERA_H #define SOC_CAMERA_H +#include +#include #include #include -#include +#include 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; + struct device *pdev; /* Platform device */ + s32 user_width; + s32 user_height; 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_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 module *owner; - /* soc_camera.c private count. Only accessed with video_lock held */ + 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 { @@ -52,11 +51,11 @@ struct soc_camera_file { }; struct soc_camera_host { + struct v4l2_device v4l2_dev; struct list_head list; - struct device dev; unsigned char nr; /* Host number */ void *priv; - char *drv_name; + const char *drv_name; struct soc_camera_host_ops *ops; }; @@ -64,79 +63,170 @@ 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 state); + int (*suspend)(struct soc_camera_device *, pm_message_t); int (*resume)(struct soc_camera_device *); - int (*set_fmt_cap)(struct soc_camera_device *, __u32, - struct v4l2_rect *); - int (*try_fmt_cap)(struct soc_camera_device *, struct v4l2_format *); + /* + * .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 (*try_bus_param)(struct soc_camera_device *, __u32); 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; - /* GPIO number to switch between 8 and 10 bit modes */ - unsigned int gpio; + /* 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(struct device *dev) +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(struct 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) { - return container_of(dev, struct soc_camera_host, dev); + struct device *control = to_soc_camera_control(icd); + return dev_get_drvdata(control); } -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); +int soc_camera_host_register(struct soc_camera_host *ici); +void soc_camera_host_unregister(struct soc_camera_host *ici); -extern int soc_camera_video_start(struct soc_camera_device *icd); -extern void soc_camera_video_stop(struct soc_camera_device *icd); +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 { - 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_fmt_cap)(struct soc_camera_device *, __u32, - struct v4l2_rect *); - int (*try_fmt_cap)(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 *); + 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) { @@ -155,28 +245,55 @@ static inline struct v4l2_queryctrl const *soc_camera_find_qctrl( #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_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_8 | SOCAM_DATAWIDTH_9 | \ - SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_16) +#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; + 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) ? 0 : common_flags; + 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