From 25a348110078cefa99b0b079938dd930cfc3a0be Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 21 Dec 2012 08:11:48 -0300 Subject: [media] soc-camera: split struct soc_camera_link into host and subdevice parts struct soc_camera_link currently contains fields, used both by sensor and bridge drivers. To make subdevice driver re-use simpler, split it into a host and a subdevice parts. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- include/media/soc_camera.h | 102 +++++++++++++++++++++++++++++------- include/media/soc_camera_platform.h | 10 ++-- 2 files changed, 89 insertions(+), 23 deletions(-) (limited to 'include/media') diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h index 5a662c981484..2cc70cf318bf 100644 --- a/include/media/soc_camera.h +++ b/include/media/soc_camera.h @@ -23,11 +23,11 @@ #include struct file; -struct soc_camera_link; +struct soc_camera_desc; struct soc_camera_device { struct list_head list; /* list of all registered devices */ - struct soc_camera_link *link; + struct soc_camera_desc *sdesc; struct device *pdev; /* Platform device */ struct device *parent; /* Camera host device */ struct device *control; /* E.g., the i2c client */ @@ -116,26 +116,72 @@ struct soc_camera_host_ops { struct i2c_board_info; struct regulator_bulk_data; -struct soc_camera_link { - /* Camera bus id, used to match a camera and a bus */ - int bus_id; +struct soc_camera_subdev_desc { /* 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; + + /* sensor driver private platform data */ + void *drv_priv; /* Optional regulators that have to be managed on power on/off events */ struct regulator_bulk_data *regulators; int num_regulators; + /* 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 *); +}; + +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 *); +}; + +/* + * 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; + + /* Optional regulators that have to be managed on power on/off events */ + struct regulator_bulk_data *regulators; + int num_regulators; + /* Optional callbacks to power on or off and reset the sensor */ int (*power)(struct device *, int); int (*reset)(struct device *); @@ -147,6 +193,24 @@ struct soc_camera_link { 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 *); + + /* + * 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( @@ -157,10 +221,10 @@ static inline struct soc_camera_host *to_soc_camera_host( return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev); } -static inline struct soc_camera_link *to_soc_camera_link( +static inline struct soc_camera_desc *to_soc_camera_desc( const struct soc_camera_device *icd) { - return icd->link; + return icd->sdesc; } static inline struct device *to_soc_camera_control( @@ -250,19 +314,17 @@ static inline void soc_camera_limit_side(int *start, int *length, *start = start_min + length_max - *length; } -unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl, - unsigned long flags); -unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl, +unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd, const struct v4l2_mbus_config *cfg); -int soc_camera_power_on(struct device *dev, struct soc_camera_link *icl); -int soc_camera_power_off(struct device *dev, struct soc_camera_link *icl); +int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd); +int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd); static inline int soc_camera_set_power(struct device *dev, - struct soc_camera_link *icl, bool on) + struct soc_camera_subdev_desc *ssdd, bool on) { - return on ? soc_camera_power_on(dev, icl) - : soc_camera_power_off(dev, icl); + return on ? soc_camera_power_on(dev, ssdd) + : soc_camera_power_off(dev, ssdd); } /* This is only temporary here - until v4l2-subdev begins to link to video_device */ @@ -274,7 +336,7 @@ static inline struct video_device *soc_camera_i2c_to_vdev(const struct i2c_clien return icd ? icd->vdev : NULL; } -static inline struct soc_camera_link *soc_camera_i2c_to_link(const struct i2c_client *client) +static inline struct soc_camera_subdev_desc *soc_camera_i2c_to_desc(const struct i2c_client *client) { return client->dev.platform_data; } diff --git a/include/media/soc_camera_platform.h b/include/media/soc_camera_platform.h index 8aa4200a0b1d..1e5065dab430 100644 --- a/include/media/soc_camera_platform.h +++ b/include/media/soc_camera_platform.h @@ -38,10 +38,12 @@ static inline int soc_camera_platform_add(struct soc_camera_device *icd, void (*release)(struct device *dev), int id) { - struct soc_camera_platform_info *info = plink->priv; + struct soc_camera_subdev_desc *ssdd = + (struct soc_camera_subdev_desc *)plink; + struct soc_camera_platform_info *info = ssdd->drv_priv; int ret; - if (icd->link != plink) + if (&icd->sdesc->subdev_desc != ssdd) return -ENODEV; if (*pdev) @@ -70,7 +72,9 @@ static inline void soc_camera_platform_del(const struct soc_camera_device *icd, struct platform_device *pdev, const struct soc_camera_link *plink) { - if (icd->link != plink || !pdev) + const struct soc_camera_subdev_desc *ssdd = + (const struct soc_camera_subdev_desc *)plink; + if (&icd->sdesc->subdev_desc != ssdd || !pdev) return; platform_device_unregister(pdev); -- cgit v1.2.3