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Only accessed with .host_lock held */ int use_count; struct file *streamer; /* stream owner */ struct v4l2_clk *clk; /* Asynchronous subdevice management */ struct soc_camera_async_client *sasc; /* video buffer queue */ struct vb2_queue vb2_vidq; }; /* Host supports programmable stride */ #define SOCAM_HOST_CAP_STRIDE (1 << 0) enum soc_camera_subdev_role { SOCAM_SUBDEV_DATA_SOURCE = 1, SOCAM_SUBDEV_DATA_SINK, SOCAM_SUBDEV_DATA_PROCESSOR, }; struct soc_camera_async_subdev { struct v4l2_async_subdev asd; enum soc_camera_subdev_role role; }; struct soc_camera_host { struct v4l2_device v4l2_dev; struct list_head list; struct mutex host_lock; /* Main synchronisation lock */ struct mutex clk_lock; /* Protect pipeline modifications */ unsigned char nr; /* Host number */ u32 capabilities; struct soc_camera_device *icd; /* Currently attached client */ void *priv; const char *drv_name; struct soc_camera_host_ops *ops; struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */ unsigned int *asd_sizes; /* 0-terminated array of asd group sizes */ }; struct soc_camera_host_ops { struct module *owner; int (*add)(struct soc_camera_device *); void (*remove)(struct soc_camera_device *); int (*clock_start)(struct soc_camera_host *); void (*clock_stop)(struct soc_camera_host *); /* * .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 (*get_selection)(struct soc_camera_device *, struct v4l2_selection *); int (*set_selection)(struct soc_camera_device *, struct v4l2_selection *); /* * The difference to .set_selection() is, that .set_liveselection is not allowed * to change the output sizes */ int (*set_liveselection)(struct soc_camera_device *, struct v4l2_selection *); int (*set_fmt)(struct soc_camera_device *, struct v4l2_format *); int (*try_fmt)(struct soc_camera_device *, struct v4l2_format *); int (*init_videobuf2)(struct vb2_queue *, struct soc_camera_device *); int (*querycap)(struct soc_camera_host *, struct v4l2_capability *); int (*set_bus_param)(struct soc_camera_device *); int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *); int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *); int (*enum_framesizes)(struct soc_camera_device *, struct v4l2_frmsizeenum *); __poll_t (*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 i2c_board_info; struct regulator_bulk_data; struct soc_camera_subdev_desc { /* Per camera SOCAM_SENSOR_* bus flags */ unsigned long flags; /* sensor driver private platform data */ void *drv_priv; /* * Set unbalanced_power to true to deal with legacy drivers, failing to * balance their calls to subdevice's .s_power() method. clock_state is * then used internally by helper functions, it shouldn't be touched by * drivers or the platform code. */ bool unbalanced_power; unsigned long clock_state; /* 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_subdev_desc *, unsigned long flags); unsigned long (*query_bus_param)(struct soc_camera_subdev_desc *); void (*free_bus)(struct soc_camera_subdev_desc *); /* Optional regulators that have to be managed on power on/off events */ struct v4l2_subdev_platform_data sd_pdata; }; struct soc_camera_host_desc { /* Camera bus id, used to match a camera and a bus */ int bus_id; int i2c_adapter_id; struct i2c_board_info *board_info; const char *module_name; /* * For non-I2C devices platform has to provide methods to add a device * to the system and to remove it */ int (*add_device)(struct soc_camera_device *); void (*del_device)(struct soc_camera_device *); }; /* * Platform data for "soc-camera-pdrv" * This MUST be kept binary-identical to struct soc_camera_link below, until * it is completely replaced by this one, after which we can split it into its * two components. */ struct soc_camera_desc { struct soc_camera_subdev_desc subdev_desc; struct soc_camera_host_desc host_desc; }; /* Prepare to replace this struct: don't change its layout any more! */ struct soc_camera_link { /* * Subdevice part - keep at top and compatible to * struct soc_camera_subdev_desc */ /* Per camera SOCAM_SENSOR_* bus flags */ unsigned long flags; void *priv; /* Set by platforms to handle misbehaving drivers */ bool unbalanced_power; /* Used by soc-camera helper functions */ unsigned long clock_state; /* 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 *); /* Optional regulators that have to be managed on power on/off events */ struct regulator_bulk_data *regulators; int num_regulators; void *host_priv; /* * Host part - keep at bottom and compatible to * struct soc_camera_host_desc */ /* Camera bus id, used to match a camera and a bus */ int bus_id; int i2c_adapter_id; struct i2c_board_info *board_info; const char *module_name; /* * For non-I2C devices platform has to provide methods to add a device * to the system and to remove it */ int (*add_device)(struct soc_camera_device *); void (*del_device)(struct soc_camera_device *); }; 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_desc *to_soc_camera_desc( const struct soc_camera_device *icd) { return icd->sdesc; } static inline struct device *to_soc_camera_control( const struct soc_camera_device *icd) { return icd->control; } 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 { u32 code; const struct soc_mbus_pixelfmt *host_fmt; }; #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; }; #define SOCAM_DATAWIDTH(x) BIT((x) - 1) #define SOCAM_DATAWIDTH_4 SOCAM_DATAWIDTH(4) #define SOCAM_DATAWIDTH_8 SOCAM_DATAWIDTH(8) #define SOCAM_DATAWIDTH_9 SOCAM_DATAWIDTH(9) #define SOCAM_DATAWIDTH_10 SOCAM_DATAWIDTH(10) #define SOCAM_DATAWIDTH_12 SOCAM_DATAWIDTH(12) #define SOCAM_DATAWIDTH_15 SOCAM_DATAWIDTH(15) #define SOCAM_DATAWIDTH_16 SOCAM_DATAWIDTH(16) #define SOCAM_DATAWIDTH_18 SOCAM_DATAWIDTH(18) #define SOCAM_DATAWIDTH_24 SOCAM_DATAWIDTH(24) #define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 | SOCAM_DATAWIDTH_8 | \ SOCAM_DATAWIDTH_9 | SOCAM_DATAWIDTH_10 | \ SOCAM_DATAWIDTH_12 | SOCAM_DATAWIDTH_15 | \ SOCAM_DATAWIDTH_16 | SOCAM_DATAWIDTH_18 | \ SOCAM_DATAWIDTH_24) 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; if (*start < start_min) *start = start_min; else if (*start > start_min + length_max - *length) *start = start_min + length_max - *length; } unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd, const struct v4l2_mbus_config *cfg); int soc_camera_power_init(struct device *dev, struct soc_camera_subdev_desc *ssdd); int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd, struct v4l2_clk *clk); int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd, struct v4l2_clk *clk); static inline int soc_camera_set_power(struct device *dev, struct soc_camera_subdev_desc *ssdd, struct v4l2_clk *clk, bool on) { return on ? soc_camera_power_on(dev, ssdd, clk) : soc_camera_power_off(dev, ssdd, clk); } /* This is only temporary here - until v4l2-subdev begins to link to video_device */ #include static inline struct video_device *soc_camera_i2c_to_vdev(const struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd); return icd ? icd->vdev : NULL; } static inline struct soc_camera_subdev_desc *soc_camera_i2c_to_desc(const struct i2c_client *client) { return client->dev.platform_data; } static inline struct v4l2_subdev *soc_camera_vdev_to_subdev(struct video_device *vdev) { struct soc_camera_device *icd = video_get_drvdata(vdev); return soc_camera_to_subdev(icd); } static inline struct soc_camera_device *soc_camera_from_vb2q(const struct vb2_queue *vq) { return container_of(vq, struct soc_camera_device, vb2_vidq); } static inline u32 soc_camera_grp_id(const struct soc_camera_device *icd) { return (icd->iface << 8) | (icd->devnum + 1); } void soc_camera_lock(struct vb2_queue *vq); void soc_camera_unlock(struct vb2_queue *vq); #endif