#ifndef SOC_CAMERA_H
#define SOC_CAMERA_H
+#include <linux/mutex.h>
+#include <linux/pm.h>
#include <linux/videodev2.h>
-#include <media/videobuf-dma-sg.h>
+#include <media/videobuf-core.h>
struct soc_camera_device {
struct list_head list;
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 {
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)
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);
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(
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
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