V4L/DVB (7336): soc-camera: streamline hardware parameter negotiation

[h-e-n] / include / media / soc_camera.h

diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index c886b1e..3e48e43 100644 (file)
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -34,7 +34,7 @@ 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_ops *ops;
        struct video_device *vdev;
        const struct soc_camera_data_format *current_fmt;
@@ -61,11 +61,13 @@ struct soc_camera_host {
        char *drv_name;
        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 (*set_fmt_cap)(struct soc_camera_device *, __u32,
+                          struct v4l2_rect *);
+       int (*try_fmt_cap)(struct soc_camera_device *, struct v4l2_format *);
        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);
        unsigned int (*poll)(struct file *, poll_table *);
 };
 
@@ -108,9 +110,11 @@ struct soc_camera_ops {
        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 (*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
@@ -123,7 +127,6 @@ struct soc_camera_ops {
        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);
 };
 
 static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
@@ -138,12 +141,33 @@ 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_8              (1 << 6)
+#define SOCAM_DATAWIDTH_9              (1 << 7)
+#define SOCAM_DATAWIDTH_10             (1 << 8)
+#define SOCAM_PCLK_SAMPLE_RISING       (1 << 9)
+#define SOCAM_PCLK_SAMPLE_FALLING      (1 << 10)
+
+#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_9 | \
+                             SOCAM_DATAWIDTH_10)
+
+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;
+}
 
 #endif