#ifndef SOC_CAMERA_H
#define SOC_CAMERA_H
+#include <linux/mutex.h>
+#include <linux/pm.h>
#include <linux/videodev2.h>
#include <media/videobuf-core.h>
+#include <media/v4l2-device.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;
+ struct device *pdev; /* Platform device */
+ s32 user_width;
+ s32 user_height;
+ enum v4l2_colorspace colorspace;
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 */
+ const struct soc_camera_format_xlate *current_fmt;
+ 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 {
};
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;
};
struct module *owner;
int (*add)(struct soc_camera_device *);
void (*remove)(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 *);
+ int (*suspend)(struct soc_camera_device *, pm_message_t);
+ int (*resume)(struct soc_camera_device *);
+ /*
+ * .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 *, unsigned 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 *);
+ int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
+ int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
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;
+ void *priv;
+
+ /*
+ * 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)
{
- return container_of(dev, struct soc_camera_host, dev);
+ struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
+
+ return container_of(v4l2_dev, struct soc_camera_host, v4l2_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);
+static inline struct soc_camera_link *to_soc_camera_link(
+ const struct soc_camera_device *icd)
+{
+ return icd->dev.platform_data;
+}
-extern int soc_camera_video_start(struct soc_camera_device *icd);
-extern void soc_camera_video_stop(struct soc_camera_device *icd);
+static inline struct device *to_soc_camera_control(
+ const struct soc_camera_device *icd)
+{
+ return dev_get_drvdata(&icd->dev);
+}
-struct soc_camera_data_format {
- char *name;
- unsigned int depth;
- __u32 fourcc;
- enum v4l2_colorspace colorspace;
+static inline struct v4l2_subdev *soc_camera_to_subdev(
+ const struct soc_camera_device *icd)
+{
+ struct device *control = to_soc_camera_control(icd);
+ return dev_get_drvdata(control);
+}
+
+int soc_camera_host_register(struct soc_camera_host *ici);
+void soc_camera_host_unregister(struct soc_camera_host *ici);
+
+const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
+ struct soc_camera_device *icd, unsigned int fourcc);
+
+/**
+ * struct soc_camera_format_xlate - match between host and sensor formats
+ * @code: code of a sensor provided format
+ * @host_fmt: host format after host translation from code
+ *
+ * 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 {
+ enum v4l2_mbus_pixelcode code;
+ const struct soc_mbus_pixelfmt *host_fmt;
};
struct soc_camera_ops {
- struct module *owner;
- int (*probe)(struct soc_camera_device *);
- void (*remove)(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 *);
+ int (*suspend)(struct soc_camera_device *, pm_message_t state);
+ int (*resume)(struct soc_camera_device *);
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)
{
#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 || !data || !mode || !buswidth) ? 0 :
+ common_flags;
+}
+
+static inline void soc_camera_limit_side(int *start, 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;
- return (!hsync || !vsync || !pclk) ? 0 : common_flags;
+ 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);
+
+/* This is only temporary here - until v4l2-subdev begins to link to video_device */
+#include <linux/i2c.h>
+static inline struct video_device *soc_camera_i2c_to_vdev(struct i2c_client *client)
+{
+ struct soc_camera_device *icd = client->dev.platform_data;
+ return icd->vdev;
}
#endif
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