diff options
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/media-devnode.h | 4 | ||||
| -rw-r--r-- | include/media/omap3isp.h | 158 | ||||
| -rw-r--r-- | include/media/rc-core.h | 9 | ||||
| -rw-r--r-- | include/media/v4l2-async.h | 8 | ||||
| -rw-r--r-- | include/media/v4l2-ctrls.h | 1018 | ||||
| -rw-r--r-- | include/media/v4l2-dv-timings.h | 135 | ||||
| -rw-r--r-- | include/media/v4l2-event.h | 47 | ||||
| -rw-r--r-- | include/media/v4l2-flash-led-class.h | 12 | ||||
| -rw-r--r-- | include/media/v4l2-mediabus.h | 4 | ||||
| -rw-r--r-- | include/media/v4l2-mem2mem.h | 20 | ||||
| -rw-r--r-- | include/media/v4l2-subdev.h | 372 | ||||
| -rw-r--r-- | include/media/videobuf-core.h | 2 | ||||
| -rw-r--r-- | include/media/videobuf2-core.h | 12 | ||||
| -rw-r--r-- | include/media/videobuf2-memops.h | 3 |
14 files changed, 954 insertions, 850 deletions
diff --git a/include/media/media-devnode.h b/include/media/media-devnode.h index 0dc7060f9625..17ddae32060d 100644 --- a/include/media/media-devnode.h +++ b/include/media/media-devnode.h @@ -53,9 +53,13 @@ struct media_file_operations { /** * struct media_devnode - Media device node + * @fops: pointer to struct media_file_operations with media device ops + * @dev: struct device pointer for the media controller device + * @cdev: struct cdev pointer character device * @parent: parent device * @minor: device node minor number * @flags: flags, combination of the MEDIA_FLAG_* constants + * @release: release callback called at the end of media_devnode_release() * * This structure represents a media-related device node. * diff --git a/include/media/omap3isp.h b/include/media/omap3isp.h deleted file mode 100644 index 048f8f9117ef..000000000000 --- a/include/media/omap3isp.h +++ /dev/null @@ -1,158 +0,0 @@ -/* - * omap3isp.h - * - * TI OMAP3 ISP - Platform data - * - * Copyright (C) 2011 Nokia Corporation - * - * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> - * Sakari Ailus <sakari.ailus@iki.fi> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ - -#ifndef __MEDIA_OMAP3ISP_H__ -#define __MEDIA_OMAP3ISP_H__ - -struct i2c_board_info; -struct isp_device; - -enum isp_interface_type { - ISP_INTERFACE_PARALLEL, - ISP_INTERFACE_CSI2A_PHY2, - ISP_INTERFACE_CCP2B_PHY1, - ISP_INTERFACE_CCP2B_PHY2, - ISP_INTERFACE_CSI2C_PHY1, -}; - -enum { - ISP_LANE_SHIFT_0 = 0, - ISP_LANE_SHIFT_2 = 1, - ISP_LANE_SHIFT_4 = 2, - ISP_LANE_SHIFT_6 = 3, -}; - -/** - * struct isp_parallel_cfg - Parallel interface configuration - * @data_lane_shift: Data lane shifter - * ISP_LANE_SHIFT_0 - CAMEXT[13:0] -> CAM[13:0] - * ISP_LANE_SHIFT_2 - CAMEXT[13:2] -> CAM[11:0] - * ISP_LANE_SHIFT_4 - CAMEXT[13:4] -> CAM[9:0] - * ISP_LANE_SHIFT_6 - CAMEXT[13:6] -> CAM[7:0] - * @clk_pol: Pixel clock polarity - * 0 - Sample on rising edge, 1 - Sample on falling edge - * @hs_pol: Horizontal synchronization polarity - * 0 - Active high, 1 - Active low - * @vs_pol: Vertical synchronization polarity - * 0 - Active high, 1 - Active low - * @fld_pol: Field signal polarity - * 0 - Positive, 1 - Negative - * @data_pol: Data polarity - * 0 - Normal, 1 - One's complement - */ -struct isp_parallel_cfg { - unsigned int data_lane_shift:2; - unsigned int clk_pol:1; - unsigned int hs_pol:1; - unsigned int vs_pol:1; - unsigned int fld_pol:1; - unsigned int data_pol:1; -}; - -enum { - ISP_CCP2_PHY_DATA_CLOCK = 0, - ISP_CCP2_PHY_DATA_STROBE = 1, -}; - -enum { - ISP_CCP2_MODE_MIPI = 0, - ISP_CCP2_MODE_CCP2 = 1, -}; - -/** - * struct isp_csiphy_lane: CCP2/CSI2 lane position and polarity - * @pos: position of the lane - * @pol: polarity of the lane - */ -struct isp_csiphy_lane { - u8 pos; - u8 pol; -}; - -#define ISP_CSIPHY1_NUM_DATA_LANES 1 -#define ISP_CSIPHY2_NUM_DATA_LANES 2 - -/** - * struct isp_csiphy_lanes_cfg - CCP2/CSI2 lane configuration - * @data: Configuration of one or two data lanes - * @clk: Clock lane configuration - */ -struct isp_csiphy_lanes_cfg { - struct isp_csiphy_lane data[ISP_CSIPHY2_NUM_DATA_LANES]; - struct isp_csiphy_lane clk; -}; - -/** - * struct isp_ccp2_cfg - CCP2 interface configuration - * @strobe_clk_pol: Strobe/clock polarity - * 0 - Non Inverted, 1 - Inverted - * @crc: Enable the cyclic redundancy check - * @ccp2_mode: Enable CCP2 compatibility mode - * ISP_CCP2_MODE_MIPI - MIPI-CSI1 mode - * ISP_CCP2_MODE_CCP2 - CCP2 mode - * @phy_layer: Physical layer selection - * ISP_CCP2_PHY_DATA_CLOCK - Data/clock physical layer - * ISP_CCP2_PHY_DATA_STROBE - Data/strobe physical layer - * @vpclk_div: Video port output clock control - */ -struct isp_ccp2_cfg { - unsigned int strobe_clk_pol:1; - unsigned int crc:1; - unsigned int ccp2_mode:1; - unsigned int phy_layer:1; - unsigned int vpclk_div:2; - struct isp_csiphy_lanes_cfg lanecfg; -}; - -/** - * struct isp_csi2_cfg - CSI2 interface configuration - * @crc: Enable the cyclic redundancy check - */ -struct isp_csi2_cfg { - unsigned crc:1; - struct isp_csiphy_lanes_cfg lanecfg; -}; - -struct isp_bus_cfg { - enum isp_interface_type interface; - union { - struct isp_parallel_cfg parallel; - struct isp_ccp2_cfg ccp2; - struct isp_csi2_cfg csi2; - } bus; /* gcc < 4.6.0 chokes on anonymous union initializers */ -}; - -struct isp_platform_subdev { - struct i2c_board_info *board_info; - int i2c_adapter_id; - struct isp_bus_cfg *bus; -}; - -struct isp_platform_data { - struct isp_platform_subdev *subdevs; - void (*set_constraints)(struct isp_device *isp, bool enable); -}; - -#endif /* __MEDIA_OMAP3ISP_H__ */ diff --git a/include/media/rc-core.h b/include/media/rc-core.h index 5642fbea886e..ec921f6538c7 100644 --- a/include/media/rc-core.h +++ b/include/media/rc-core.h @@ -74,8 +74,6 @@ enum rc_filter_type { * @input_dev: the input child device used to communicate events to userspace * @driver_type: specifies if protocol decoding is done in hardware or software * @idle: used to keep track of RX state - * @encode_wakeup: wakeup filtering uses IR encode API, therefore the allowed - * wakeup protocols is the set of all raw encoders * @allowed_protocols: bitmask with the supported RC_BIT_* protocols * @enabled_protocols: bitmask with the enabled RC_BIT_* protocols * @allowed_wakeup_protocols: bitmask with the supported RC_BIT_* wakeup protocols @@ -112,7 +110,7 @@ enum rc_filter_type { * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs) * @s_tx_carrier: set transmit carrier frequency * @s_tx_duty_cycle: set transmit duty cycle (0% - 100%) - * @s_rx_carrier: inform driver about carrier it is expected to handle + * @s_rx_carrier_range: inform driver about carrier it is expected to handle * @tx_ir: transmit IR * @s_idle: enable/disable hardware idle mode, upon which, * device doesn't interrupt host until it sees IR pulses @@ -136,7 +134,6 @@ struct rc_dev { struct input_dev *input_dev; enum rc_driver_type driver_type; bool idle; - bool encode_wakeup; u64 allowed_protocols; u64 enabled_protocols; u64 allowed_wakeup_protocols; @@ -246,7 +243,6 @@ static inline void init_ir_raw_event(struct ir_raw_event *ev) #define US_TO_NS(usec) ((usec) * 1000) #define MS_TO_US(msec) ((msec) * 1000) #define MS_TO_NS(msec) ((msec) * 1000 * 1000) -#define NS_TO_US(nsec) DIV_ROUND_UP(nsec, 1000L) void ir_raw_event_handle(struct rc_dev *dev); int ir_raw_event_store(struct rc_dev *dev, struct ir_raw_event *ev); @@ -254,9 +250,6 @@ int ir_raw_event_store_edge(struct rc_dev *dev, enum raw_event_type type); int ir_raw_event_store_with_filter(struct rc_dev *dev, struct ir_raw_event *ev); void ir_raw_event_set_idle(struct rc_dev *dev, bool idle); -int ir_raw_encode_scancode(u64 protocols, - const struct rc_scancode_filter *scancode, - struct ir_raw_event *events, unsigned int max); static inline void ir_raw_event_reset(struct rc_dev *dev) { diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index 768356917bea..1d6d7da4c45d 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -32,7 +32,8 @@ enum v4l2_async_match_type { /** * struct v4l2_async_subdev - sub-device descriptor, as known to a bridge - * @bus_type: subdevice bus type to select the appropriate matching method + * + * @match_type: type of match that will be used * @match: union of per-bus type matching data sets * @list: used to link struct v4l2_async_subdev objects, waiting to be * probed, to a notifier->waiting list @@ -62,8 +63,9 @@ struct v4l2_async_subdev { }; /** - * v4l2_async_notifier - v4l2_device notifier data - * @num_subdevs:number of subdevices + * struct v4l2_async_notifier - v4l2_device notifier data + * + * @num_subdevs: number of subdevices * @subdevs: array of pointers to subdevice descriptors * @v4l2_dev: pointer to struct v4l2_device * @waiting: list of struct v4l2_async_subdev, waiting for their drivers diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index 911f3e542834..da6fe9802fee 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -36,7 +36,8 @@ struct v4l2_subscribed_event; struct v4l2_fh; struct poll_table_struct; -/** union v4l2_ctrl_ptr - A pointer to a control value. +/** + * union v4l2_ctrl_ptr - A pointer to a control value. * @p_s32: Pointer to a 32-bit signed value. * @p_s64: Pointer to a 64-bit signed value. * @p_u8: Pointer to a 8-bit unsigned value. @@ -55,30 +56,34 @@ union v4l2_ctrl_ptr { void *p; }; -/** struct v4l2_ctrl_ops - The control operations that the driver has to provide. - * @g_volatile_ctrl: Get a new value for this control. Generally only relevant - * for volatile (and usually read-only) controls such as a control - * that returns the current signal strength which changes - * continuously. - * If not set, then the currently cached value will be returned. - * @try_ctrl: Test whether the control's value is valid. Only relevant when - * the usual min/max/step checks are not sufficient. - * @s_ctrl: Actually set the new control value. s_ctrl is compulsory. The - * ctrl->handler->lock is held when these ops are called, so no - * one else can access controls owned by that handler. - */ +/** + * struct v4l2_ctrl_ops - The control operations that the driver has to provide. + * @g_volatile_ctrl: Get a new value for this control. Generally only relevant + * for volatile (and usually read-only) controls such as a control + * that returns the current signal strength which changes + * continuously. + * If not set, then the currently cached value will be returned. + * @try_ctrl: Test whether the control's value is valid. Only relevant when + * the usual min/max/step checks are not sufficient. + * @s_ctrl: Actually set the new control value. s_ctrl is compulsory. The + * ctrl->handler->lock is held when these ops are called, so no + * one else can access controls owned by that handler. + */ struct v4l2_ctrl_ops { int (*g_volatile_ctrl)(struct v4l2_ctrl *ctrl); int (*try_ctrl)(struct v4l2_ctrl *ctrl); int (*s_ctrl)(struct v4l2_ctrl *ctrl); }; -/** struct v4l2_ctrl_type_ops - The control type operations that the driver has to provide. - * @equal: return true if both values are equal. - * @init: initialize the value. - * @log: log the value. - * @validate: validate the value. Return 0 on success and a negative value otherwise. - */ +/** + * struct v4l2_ctrl_type_ops - The control type operations that the driver + * has to provide. + * + * @equal: return true if both values are equal. + * @init: initialize the value. + * @log: log the value. + * @validate: validate the value. Return 0 on success and a negative value otherwise. + */ struct v4l2_ctrl_type_ops { bool (*equal)(const struct v4l2_ctrl *ctrl, u32 idx, union v4l2_ctrl_ptr ptr1, @@ -92,74 +97,80 @@ struct v4l2_ctrl_type_ops { typedef void (*v4l2_ctrl_notify_fnc)(struct v4l2_ctrl *ctrl, void *priv); -/** struct v4l2_ctrl - The control structure. - * @node: The list node. - * @ev_subs: The list of control event subscriptions. - * @handler: The handler that owns the control. - * @cluster: Point to start of cluster array. - * @ncontrols: Number of controls in cluster array. - * @done: Internal flag: set for each processed control. - * @is_new: Set when the user specified a new value for this control. It - * is also set when called from v4l2_ctrl_handler_setup. Drivers - * should never set this flag. - * @has_changed: Set when the current value differs from the new value. Drivers - * should never use this flag. - * @is_private: If set, then this control is private to its handler and it - * will not be added to any other handlers. Drivers can set - * this flag. - * @is_auto: If set, then this control selects whether the other cluster - * members are in 'automatic' mode or 'manual' mode. This is - * used for autogain/gain type clusters. Drivers should never - * set this flag directly. - * @is_int: If set, then this control has a simple integer value (i.e. it - * uses ctrl->val). - * @is_string: If set, then this control has type V4L2_CTRL_TYPE_STRING. - * @is_ptr: If set, then this control is an array and/or has type >= V4L2_CTRL_COMPOUND_TYPES - * and/or has type V4L2_CTRL_TYPE_STRING. In other words, struct - * v4l2_ext_control uses field p to point to the data. - * @is_array: If set, then this control contains an N-dimensional array. - * @has_volatiles: If set, then one or more members of the cluster are volatile. - * Drivers should never touch this flag. - * @call_notify: If set, then call the handler's notify function whenever the - * control's value changes. - * @manual_mode_value: If the is_auto flag is set, then this is the value - * of the auto control that determines if that control is in - * manual mode. So if the value of the auto control equals this - * value, then the whole cluster is in manual mode. Drivers should - * never set this flag directly. - * @ops: The control ops. - * @type_ops: The control type ops. - * @id: The control ID. - * @name: The control name. - * @type: The control type. - * @minimum: The control's minimum value. - * @maximum: The control's maximum value. - * @default_value: The control's default value. - * @step: The control's step value for non-menu controls. - * @elems: The number of elements in the N-dimensional array. - * @elem_size: The size in bytes of the control. - * @dims: The size of each dimension. - * @nr_of_dims:The number of dimensions in @dims. - * @menu_skip_mask: The control's skip mask for menu controls. This makes it - * easy to skip menu items that are not valid. If bit X is set, - * then menu item X is skipped. Of course, this only works for - * menus with <= 32 menu items. There are no menus that come - * close to that number, so this is OK. Should we ever need more, - * then this will have to be extended to a u64 or a bit array. - * @qmenu: A const char * array for all menu items. Array entries that are - * empty strings ("") correspond to non-existing menu items (this - * is in addition to the menu_skip_mask above). The last entry - * must be NULL. - * @flags: The control's flags. - * @cur: The control's current value. - * @val: The control's new s32 value. - * @val64: The control's new s64 value. - * @priv: The control's private pointer. For use by the driver. It is - * untouched by the control framework. Note that this pointer is - * not freed when the control is deleted. Should this be needed - * then a new internal bitfield can be added to tell the framework - * to free this pointer. - */ +/** + * struct v4l2_ctrl - The control structure. + * @node: The list node. + * @ev_subs: The list of control event subscriptions. + * @handler: The handler that owns the control. + * @cluster: Point to start of cluster array. + * @ncontrols: Number of controls in cluster array. + * @done: Internal flag: set for each processed control. + * @is_new: Set when the user specified a new value for this control. It + * is also set when called from v4l2_ctrl_handler_setup. Drivers + * should never set this flag. + * @has_changed: Set when the current value differs from the new value. Drivers + * should never use this flag. + * @is_private: If set, then this control is private to its handler and it + * will not be added to any other handlers. Drivers can set + * this flag. + * @is_auto: If set, then this control selects whether the other cluster + * members are in 'automatic' mode or 'manual' mode. This is + * used for autogain/gain type clusters. Drivers should never + * set this flag directly. + * @is_int: If set, then this control has a simple integer value (i.e. it + * uses ctrl->val). + * @is_string: If set, then this control has type V4L2_CTRL_TYPE_STRING. + * @is_ptr: If set, then this control is an array and/or has type >= V4L2_CTRL_COMPOUND_TYPES + * and/or has type V4L2_CTRL_TYPE_STRING. In other words, struct + * v4l2_ext_control uses field p to point to the data. + * @is_array: If set, then this control contains an N-dimensional array. + * @has_volatiles: If set, then one or more members of the cluster are volatile. + * Drivers should never touch this flag. + * @call_notify: If set, then call the handler's notify function whenever the + * control's value changes. + * @manual_mode_value: If the is_auto flag is set, then this is the value + * of the auto control that determines if that control is in + * manual mode. So if the value of the auto control equals this + * value, then the whole cluster is in manual mode. Drivers should + * never set this flag directly. + * @ops: The control ops. + * @type_ops: The control type ops. + * @id: The control ID. + * @name: The control name. + * @type: The control type. + * @minimum: The control's minimum value. + * @maximum: The control's maximum value. + * @default_value: The control's default value. + * @step: The control's step value for non-menu controls. + * @elems: The number of elements in the N-dimensional array. + * @elem_size: The size in bytes of the control. + * @dims: The size of each dimension. + * @nr_of_dims:The number of dimensions in @dims. + * @menu_skip_mask: The control's skip mask for menu controls. This makes it + * easy to skip menu items that are not valid. If bit X is set, + * then menu item X is skipped. Of course, this only works for + * menus with <= 32 menu items. There are no menus that come + * close to that number, so this is OK. Should we ever need more, + * then this will have to be extended to a u64 or a bit array. + * @qmenu: A const char * array for all menu items. Array entries that are + * empty strings ("") correspond to non-existing menu items (this + * is in addition to the menu_skip_mask above). The last entry + * must be NULL. + * @flags: The control's flags. + * @cur: The control's current value. + * @val: The control's new s32 value. + * @priv: The control's private pointer. For use by the driver. It is + * untouched by the control framework. Note that this pointer is + * not freed when the control is deleted. Should this be needed + * then a new internal bitfield can be added to tell the framework + * to free this pointer. + * @p_cur: The control's current value represented via an union with + * provides a standard way of accessing control types + * through a pointer. + * @p_new: The control's new value represented via an union with provides + * a standard way of accessing control types + * through a pointer. + */ struct v4l2_ctrl { /* Administrative fields */ struct list_head node; @@ -210,16 +221,17 @@ struct v4l2_ctrl { union v4l2_ctrl_ptr p_cur; }; -/** struct v4l2_ctrl_ref - The control reference. - * @node: List node for the sorted list. - * @next: Single-link list node for the hash. - * @ctrl: The actual control information. - * @helper: Pointer to helper struct. Used internally in prepare_ext_ctrls(). - * - * Each control handler has a list of these refs. The list_head is used to - * keep a sorted-by-control-ID list of all controls, while the next pointer - * is used to link the control in the hash's bucket. - */ +/** + * struct v4l2_ctrl_ref - The control reference. + * @node: List node for the sorted list. + * @next: Single-link list node for the hash. + * @ctrl: The actual control information. + * @helper: Pointer to helper struct. Used internally in prepare_ext_ctrls(). + * + * Each control handler has a list of these refs. The list_head is used to + * keep a sorted-by-control-ID list of all controls, while the next pointer + * is used to link the control in the hash's bucket. + */ struct v4l2_ctrl_ref { struct list_head node; struct v4l2_ctrl_ref *next; @@ -227,25 +239,26 @@ struct v4l2_ctrl_ref { struct v4l2_ctrl_helper *helper; }; -/** struct v4l2_ctrl_handler - The control handler keeps track of all the - * controls: both the controls owned by the handler and those inherited - * from other handlers. - * @_lock: Default for "lock". - * @lock: Lock to control access to this handler and its controls. - * May be replaced by the user right after init. - * @ctrls: The list of controls owned by this handler. - * @ctrl_refs: The list of control references. - * @cached: The last found control reference. It is common that the same - * control is needed multiple times, so this is a simple - * optimization. - * @buckets: Buckets for the hashing. Allows for quick control lookup. - * @notify: A notify callback that is called whenever the control changes value. - * Note that the handler's lock is held when the notify function - * is called! - * @notify_priv: Passed as argument to the v4l2_ctrl notify callback. - * @nr_of_buckets: Total number of buckets in the array. - * @error: The error code of the first failed control addition. - */ +/** + * struct v4l2_ctrl_handler - The control handler keeps track of all the + * controls: both the controls owned by the handler and those inherited + * from other handlers. + * @_lock: Default for "lock". + * @lock: Lock to control access to this handler and its controls. + * May be replaced by the user right after init. + * @ctrls: The list of controls owned by this handler. + * @ctrl_refs: The list of control references. + * @cached: The last found control reference. It is common that the same + * control is needed multiple times, so this is a simple + * optimization. + * @buckets: Buckets for the hashing. Allows for quick control lookup. + * @notify: A notify callback that is called whenever the control changes value. + * Note that the handler's lock is held when the notify function + * is called! + * @notify_priv: Passed as argument to the v4l2_ctrl notify callback. + * @nr_of_buckets: Total number of buckets in the array. + * @error: The error code of the first failed control addition. + */ struct v4l2_ctrl_handler { struct mutex _lock; struct mutex *lock; @@ -259,32 +272,35 @@ struct v4l2_ctrl_handler { int error; }; -/** struct v4l2_ctrl_config - Control configuration structure. - * @ops: The control ops. - * @type_ops: The control type ops. Only needed for compound controls. - * @id: The control ID. - * @name: The control name. - * @type: The control type. - * @min: The control's minimum value. - * @max: The control's maximum value. - * @step: The control's step value for non-menu controls. - * @def: The control's default value. - * @dims: The size of each dimension. - * @elem_size: The size in bytes of the control. - * @flags: The control's flags. - * @menu_skip_mask: The control's skip mask for menu controls. This makes it - * easy to skip menu items that are not valid. If bit X is set, - * then menu item X is skipped. Of course, this only works for - * menus with <= 64 menu items. There are no menus that come - * close to that number, so this is OK. Should we ever need more, - * then this will have to be extended to a bit array. - * @qmenu: A const char * array for all menu items. Array entries that are - * empty strings ("") correspond to non-existing menu items (this - * is in addition to the menu_skip_mask above). The last entry - * must be NULL. - * @is_private: If set, then this control is private to its handler and it - * will not be added to any other handlers. - */ +/** + * struct v4l2_ctrl_config - Control configuration structure. + * @ops: The control ops. + * @type_ops: The control type ops. Only needed for compound controls. + * @id: The control ID. + * @name: The control name. + * @type: The control type. + * @min: The control's minimum value. + * @max: The control's maximum value. + * @step: The control's step value for non-menu controls. + * @def: The control's default value. + * @dims: The size of each dimension. + * @elem_size: The size in bytes of the control. + * @flags: The control's flags. + * @menu_skip_mask: The control's skip mask for menu controls. This makes it + * easy to skip menu items that are not valid. If bit X is set, + * then menu item X is skipped. Of course, this only works for + * menus with <= 64 menu items. There are no menus that come + * close to that number, so this is OK. Should we ever need more, + * then this will have to be extended to a bit array. + * @qmenu: A const char * array for all menu items. Array entries that are + * empty strings ("") correspond to non-existing menu items (this + * is in addition to the menu_skip_mask above). The last entry + * must be NULL. + * @qmenu_int: A const s64 integer array for all menu items of the type + * V4L2_CTRL_TYPE_INTEGER_MENU. + * @is_private: If set, then this control is private to its handler and it + * will not be added to any other handlers. + */ struct v4l2_ctrl_config { const struct v4l2_ctrl_ops *ops; const struct v4l2_ctrl_type_ops *type_ops; @@ -304,42 +320,44 @@ struct v4l2_ctrl_config { unsigned int is_private:1; }; -/** v4l2_ctrl_fill() - Fill in the control fields based on the control ID. - * - * This works for all standard V4L2 controls. - * For non-standard controls it will only fill in the given arguments - * and @name will be NULL. - * - * This function will overwrite the contents of @name, @type and @flags. - * The contents of @min, @max, @step and @def may be modified depending on - * the type. - * - * Do not use in drivers! It is used internally for backwards compatibility - * control handling only. Once all drivers are converted to use the new - * control framework this function will no longer be exported. - */ +/* + * v4l2_ctrl_fill() - Fill in the control fields based on the control ID. + * + * This works for all standard V4L2 controls. + * For non-standard controls it will only fill in the given arguments + * and @name will be NULL. + * + * This function will overwrite the contents of @name, @type and @flags. + * The contents of @min, @max, @step and @def may be modified depending on + * the type. + * + * Do not use in drivers! It is used internally for backwards compatibility + * control handling only. Once all drivers are converted to use the new + * control framework this function will no longer be exported. + */ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags); -/** v4l2_ctrl_handler_init_class() - Initialize the control handler. - * @hdl: The control handler. - * @nr_of_controls_hint: A hint of how many controls this handler is - * expected to refer to. This is the total number, so including - * any inherited controls. It doesn't have to be precise, but if - * it is way off, then you either waste memory (too many buckets - * are allocated) or the control lookup becomes slower (not enough - * buckets are allocated, so there are more slow list lookups). - * It will always work, though. - * @key: Used by the lock validator if CONFIG_LOCKDEP is set. - * @name: Used by the lock validator if CONFIG_LOCKDEP is set. - * - * Returns an error if the buckets could not be allocated. This error will - * also be stored in @hdl->error. - * - * Never use this call directly, always use the v4l2_ctrl_handler_init - * macro that hides the @key and @name arguments. - */ +/** + * v4l2_ctrl_handler_init_class() - Initialize the control handler. + * @hdl: The control handler. + * @nr_of_controls_hint: A hint of how many controls this handler is + * expected to refer to. This is the total number, so including + * any inherited controls. It doesn't have to be precise, but if + * it is way off, then you either waste memory (too many buckets + * are allocated) or the control lookup becomes slower (not enough + * buckets are allocated, so there are more slow list lookups). + * It will always work, though. + * @key: Used by the lock validator if CONFIG_LOCKDEP is set. + * @name: Used by the lock validator if CONFIG_LOCKDEP is set. + * + * Returns an error if the buckets could not be allocated. This error will + * also be stored in @hdl->error. + * + * Never use this call directly, always use the v4l2_ctrl_handler_init + * macro that hides the @key and @name arguments. + */ int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl, unsigned nr_of_controls_hint, struct lock_class_key *key, const char *name); @@ -361,289 +379,326 @@ int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl, v4l2_ctrl_handler_init_class(hdl, nr_of_controls_hint, NULL, NULL) #endif -/** v4l2_ctrl_handler_free() - Free all controls owned by the handler and free - * the control list. - * @hdl: The control handler. - * - * Does nothing if @hdl == NULL. - */ +/** + * v4l2_ctrl_handler_free() - Free all controls owned by the handler and free + * the control list. + * @hdl: The control handler. + * + * Does nothing if @hdl == NULL. + */ void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl); -/** v4l2_ctrl_lock() - Helper function to lock the handler - * associated with the control. - * @ctrl: The control to lock. - */ +/** + * v4l2_ctrl_lock() - Helper function to lock the handler + * associated with the control. + * @ctrl: The control to lock. + */ static inline void v4l2_ctrl_lock(struct v4l2_ctrl *ctrl) { mutex_lock(ctrl->handler->lock); } -/** v4l2_ctrl_unlock() - Helper function to unlock the handler - * associated with the control. - * @ctrl: The control to unlock. - */ +/** + * v4l2_ctrl_unlock() - Helper function to unlock the handler + * associated with the control. + * @ctrl: The control to unlock. + */ static inline void v4l2_ctrl_unlock(struct v4l2_ctrl *ctrl) { mutex_unlock(ctrl->handler->lock); } -/** v4l2_ctrl_handler_setup() - Call the s_ctrl op for all controls belonging - * to the handler to initialize the hardware to the current control values. - * @hdl: The control handler. - * - * Button controls will be skipped, as are read-only controls. - * - * If @hdl == NULL, then this just returns 0. - */ +/** + * v4l2_ctrl_handler_setup() - Call the s_ctrl op for all controls belonging + * to the handler to initialize the hardware to the current control values. + * @hdl: The control handler. + * + * Button controls will be skipped, as are read-only controls. + * + * If @hdl == NULL, then this just returns 0. + */ int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl); -/** v4l2_ctrl_handler_log_status() - Log all controls owned by the handler. - * @hdl: The control handler. - * @prefix: The prefix to use when logging the control values. If the - * prefix does not end with a space, then ": " will be added - * after the prefix. If @prefix == NULL, then no prefix will be - * used. - * - * For use with VIDIOC_LOG_STATUS. - * - * Does nothing if @hdl == NULL. - */ +/** + * v4l2_ctrl_handler_log_status() - Log all controls owned by the handler. + * @hdl: The control handler. + * @prefix: The prefix to use when logging the control values. If the + * prefix does not end with a space, then ": " will be added + * after the prefix. If @prefix == NULL, then no prefix will be + * used. + * + * For use with VIDIOC_LOG_STATUS. + * + * Does nothing if @hdl == NULL. + */ void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl, const char *prefix); -/** v4l2_ctrl_new_custom() - Allocate and initialize a new custom V4L2 - * control. - * @hdl: The control handler. - * @cfg: The control's configuration data. - * @priv: The control's driver-specific private data. - * - * If the &v4l2_ctrl struct could not be allocated then NULL is returned - * and @hdl->error is set to the error code (if it wasn't set already). - */ +/** + * v4l2_ctrl_new_custom() - Allocate and initialize a new custom V4L2 + * control. + * @hdl: The control handler. + * @cfg: The control's configuration data. + * @priv: The control's driver-specific private data. + * + * If the &v4l2_ctrl struct could not be allocated then NULL is returned + * and @hdl->error is set to the error code (if it wasn't set already). + */ struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl, const struct v4l2_ctrl_config *cfg, void *priv); -/** v4l2_ctrl_new_std() - Allocate and initialize a new standard V4L2 non-menu control. - * @hdl: The control handler. - * @ops: The control ops. - * @id: The control ID. - * @min: The control's minimum value. - * @max: The control's maximum value. - * @step: The control's step value - * @def: The control's default value. - * - * If the &v4l2_ctrl struct could not be allocated, or the control - * ID is not known, then NULL is returned and @hdl->error is set to the - * appropriate error code (if it wasn't set already). - * - * If @id refers to a menu control, then this function will return NULL. - * - * Use v4l2_ctrl_new_std_menu() when adding menu controls. - */ +/** + * v4l2_ctrl_new_std() - Allocate and initialize a new standard V4L2 non-menu control. + * @hdl: The control handler. + * @ops: The control ops. + * @id: The control ID. + * @min: The control's minimum value. + * @max: The control's maximum value. + * @step: The control's step value + * @def: The control's default value. + * + * If the &v4l2_ctrl struct could not be allocated, or the control + * ID is not known, then NULL is returned and @hdl->error is set to the + * appropriate error code (if it wasn't set already). + * + * If @id refers to a menu control, then this function will return NULL. + * + * Use v4l2_ctrl_new_std_menu() when adding menu controls. + */ struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl, const struct v4l2_ctrl_ops *ops, u32 id, s64 min, s64 max, u64 step, s64 def); -/** v4l2_ctrl_new_std_menu() - Allocate and initialize a new standard V4L2 menu control. - * @hdl: The control handler. - * @ops: The control ops. - * @id: The control ID. - * @max: The control's maximum value. - * @mask: The control's skip mask for menu controls. This makes it - * easy to skip menu items that are not valid. If bit X is set, - * then menu item X is skipped. Of course, this only works for - * menus with <= 64 menu items. There are no menus that come - * close to that number, so this is OK. Should we ever need more, - * then this will have to be extended to a bit array. - * @def: The control's default value. - * - * Same as v4l2_ctrl_new_std(), but @min is set to 0 and the @mask value - * determines which menu items are to be skipped. - * - * If @id refers to a non-menu control, then this function will return NULL. - */ +/** + * v4l2_ctrl_new_std_menu() - Allocate and initialize a new standard V4L2 menu control. + * @hdl: The control handler. + * @ops: The control ops. + * @id: The control ID. + * @max: The control's maximum value. + * @mask: The control's skip mask for menu controls. This makes it + * easy to skip menu items that are not valid. If bit X is set, + * then menu item X is skipped. Of course, this only works for + * menus with <= 64 menu items. There are no menus that come + * close to that number, so this is OK. Should we ever need more, + * then this will have to be extended to a bit array. + * @def: The control's default value. + * + * Same as v4l2_ctrl_new_std(), but @min is set to 0 and the @mask value + * determines which menu items are to be skipped. + * + * If @id refers to a non-menu control, then this function will return NULL. + */ struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, const struct v4l2_ctrl_ops *ops, u32 id, u8 max, u64 mask, u8 def); -/** v4l2_ctrl_new_std_menu_items() - Create a new standard V4L2 menu control - * with driver specific menu. - * @hdl: The control handler. - * @ops: The control ops. - * @id: The control ID. - * @max: The control's maximum value. - * @mask: The control's skip mask for menu controls. This makes it - * easy to skip menu items that are not valid. If bit X is set, - * then menu item X is skipped. Of course, this only works for - * menus with <= 64 menu items. There are no menus that come - * close to that number, so this is OK. Should we ever need more, - * then this will have to be extended to a bit array. - * @def: The control's default value. - * @qmenu: The new menu. - * - * Same as v4l2_ctrl_new_std_menu(), but @qmenu will be the driver specific - * menu of this control. - * - */ +/** + * v4l2_ctrl_new_std_menu_items() - Create a new standard V4L2 menu control + * with driver specific menu. + * @hdl: The control handler. + * @ops: The control ops. + * @id: The control ID. + * @max: The control's maximum value. + * @mask: The control's skip mask for menu controls. This makes it + * easy to skip menu items that are not valid. If bit X is set, + * then menu item X is skipped. Of course, this only works for + * menus with <= 64 menu items. There are no menus that come + * close to that number, so this is OK. Should we ever need more, + * then this will have to be extended to a bit array. + * @def: The control's default value. + * @qmenu: The new menu. + * + * Same as v4l2_ctrl_new_std_menu(), but @qmenu will be the driver specific + * menu of this control. + * + */ struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl, const struct v4l2_ctrl_ops *ops, u32 id, u8 max, u64 mask, u8 def, const char * const *qmenu); -/** v4l2_ctrl_new_int_menu() - Create a new standard V4L2 integer menu control. - * @hdl: The control handler. - * @ops: The control ops. - * @id: The control ID. - * @max: The control's maximum value. - * @def: The control's default value. - * @qmenu_int: The control's menu entries. - * - * Same as v4l2_ctrl_new_std_menu(), but @mask is set to 0 and it additionaly - * takes as an argument an array of integers determining the menu items. - * - * If @id refers to a non-integer-menu control, then this function will return NULL. - */ +/** + * v4l2_ctrl_new_int_menu() - Create a new standard V4L2 integer menu control. + * @hdl: The control handler. + * @ops: The control ops. + * @id: The control ID. + * @max: The control's maximum value. + * @def: The control's default value. + * @qmenu_int: The control's menu entries. + * + * Same as v4l2_ctrl_new_std_menu(), but @mask is set to 0 and it additionaly + * takes as an argument an array of integers determining the menu items. + * + * If @id refers to a non-integer-menu control, then this function will return NULL. + */ struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, const struct v4l2_ctrl_ops *ops, u32 id, u8 max, u8 def, const s64 *qmenu_int); -/** v4l2_ctrl_add_ctrl() - Add a control from another handler to this handler. - * @hdl: The control handler. - * @ctrl: The control to add. - * - * It will return NULL if it was unable to add the control reference. - * If the control already belonged to the handler, then it will do - * nothing and just return @ctrl. - */ +/** + * v4l2_ctrl_add_ctrl() - Add a control from another handler to this handler. + * @hdl: The control handler. + * @ctrl: The control to add. + * + * It will return NULL if it was unable to add the control reference. + * If the control already belonged to the handler, then it will do + * nothing and just return @ctrl. + */ struct v4l2_ctrl *v4l2_ctrl_add_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_ctrl *ctrl); -/** v4l2_ctrl_add_handler() - Add all controls from handler @add to - * handler @hdl. - * @hdl: The control handler. - * @add: The control handler whose controls you want to add to - * the @hdl control handler. - * @filter: This function will filter which controls should be added. - * - * Does nothing if either of the two handlers is a NULL pointer. - * If @filter is NULL, then all controls are added. Otherwise only those - * controls for which @filter returns true will be added. - * In case of an error @hdl->error will be set to the error code (if it - * wasn't set already). - */ +/** + * v4l2_ctrl_add_handler() - Add all controls from handler @add to + * handler @hdl. + * @hdl: The control handler. + * @add: The control handler whose controls you want to add to + * the @hdl control handler. + * @filter: This function will filter which controls should be added. + * + * Does nothing if either of the two handlers is a NULL pointer. + * If @filter is NULL, then all controls are added. Otherwise only those + * controls for which @filter returns true will be added. + * In case of an error @hdl->error will be set to the error code (if it + * wasn't set already). + */ int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl, struct v4l2_ctrl_handler *add, bool (*filter)(const struct v4l2_ctrl *ctrl)); -/** v4l2_ctrl_radio_filter() - Standard filter for radio controls. - * @ctrl: The control that is filtered. - * - * This will return true for any controls that are valid for radio device - * nodes. Those are all of the V4L2_CID_AUDIO_* user controls and all FM - * transmitter class controls. - * - * This function is to be used with v4l2_ctrl_add_handler(). - */ +/** + * v4l2_ctrl_radio_filter() - Standard filter for radio controls. + * @ctrl: The control that is filtered. + * + * This will return true for any controls that are valid for radio device + * nodes. Those are all of the V4L2_CID_AUDIO_* user controls and all FM + * transmitter class controls. + * + * This function is to be used with v4l2_ctrl_add_handler(). + */ bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl); -/** v4l2_ctrl_cluster() - Mark all controls in the cluster as belonging to that cluster. - * @ncontrols: The number of controls in this cluster. - * @controls: The cluster control array of size @ncontrols. - */ +/** + * v4l2_ctrl_cluster() - Mark all controls in the cluster as belonging to that cluster. + * @ncontrols: The number of controls in this cluster. + * @controls: The cluster control array of size @ncontrols. + */ void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls); -/** v4l2_ctrl_auto_cluster() - Mark all controls in the cluster as belonging to - * that cluster and set it up for autofoo/foo-type handling. - * @ncontrols: The number of controls in this cluster. - * @controls: The cluster control array of size @ncontrols. The first control - * must be the 'auto' control (e.g. autogain, autoexposure, etc.) - * @manual_val: The value for the first control in the cluster that equals the - * manual setting. - * @set_volatile: If true, then all controls except the first auto control will - * be volatile. - * - * Use for control groups where one control selects some automatic feature and - * the other controls are only active whenever the automatic feature is turned - * off (manual mode). Typical examples: autogain vs gain, auto-whitebalance vs - * red and blue balance, etc. - * - * The behavior of such controls is as follows: - * - * When the autofoo control is set to automatic, then any manual controls - * are set to inactive and any reads will call g_volatile_ctrl (if the control - * was marked volatile). - * - * When the autofoo control is set to manual, then any manual controls will - * be marked active, and any reads will just return the current value without - * going through g_volatile_ctrl. - * - * In addition, this function will set the V4L2_CTRL_FLAG_UPDATE flag - * on the autofoo control and V4L2_CTRL_FLAG_INACTIVE on the foo control(s) - * if autofoo is in auto mode. - */ +/** + * v4l2_ctrl_auto_cluster() - Mark all controls in the cluster as belonging to + * that cluster and set it up for autofoo/foo-type handling. + * @ncontrols: The number of controls in this cluster. + * @controls: The cluster control array of size @ncontrols. The first control + * must be the 'auto' control (e.g. autogain, autoexposure, etc.) + * @manual_val: The value for the first control in the cluster that equals the + * manual setting. + * @set_volatile: If true, then all controls except the first auto control will + * be volatile. + * + * Use for control groups where one control selects some automatic feature and + * the other controls are only active whenever the automatic feature is turned + * off (manual mode). Typical examples: autogain vs gain, auto-whitebalance vs + * red and blue balance, etc. + * + * The behavior of such controls is as follows: + * + * When the autofoo control is set to automatic, then any manual controls + * are set to inactive and any reads will call g_volatile_ctrl (if the control + * was marked volatile). + * + * When the autofoo control is set to manual, then any manual controls will + * be marked active, and any reads will just return the current value without + * going through g_volatile_ctrl. + * + * In addition, this function will set the V4L2_CTRL_FLAG_UPDATE flag + * on the autofoo control and V4L2_CTRL_FLAG_INACTIVE on the foo control(s) + * if autofoo is in auto mode. + */ void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls, u8 manual_val, bool set_volatile); -/** v4l2_ctrl_find() - Find a control with the given ID. - * @hdl: The control handler. - * @id: The control ID to find. - * - * If @hdl == NULL this will return NULL as well. Will lock the handler so - * do not use from inside &v4l2_ctrl_ops. - */ +/** + * v4l2_ctrl_find() - Find a control with the given ID. + * @hdl: The control handler. + * @id: The control ID to find. + * + * If @hdl == NULL this will return NULL as well. Will lock the handler so + * do not use from inside &v4l2_ctrl_ops. + */ struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id); -/** v4l2_ctrl_activate() - Make the control active or inactive. - * @ctrl: The control to (de)activate. - * @active: True if the control should become active. - * - * This sets or clears the V4L2_CTRL_FLAG_INACTIVE flag atomically. - * Does nothing if @ctrl == NULL. - * This will usually be called from within the s_ctrl op. - * The V4L2_EVENT_CTRL event will be generated afterwards. - * - * This function assumes that the control handler is locked. - */ +/** + * v4l2_ctrl_activate() - Make the control active or inactive. + * @ctrl: The control to (de)activate. + * @active: True if the control should become active. + * + * This sets or clears the V4L2_CTRL_FLAG_INACTIVE flag atomically. + * Does nothing if @ctrl == NULL. + * This will usually be called from within the s_ctrl op. + * The V4L2_EVENT_CTRL event will be generated afterwards. + * + * This function assumes that the control handler is locked. + */ void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active); -/** v4l2_ctrl_grab() - Mark the control as grabbed or not grabbed. - * @ctrl: The control to (de)activate. - * @grabbed: True if the control should become grabbed. - * - * This sets or clears the V4L2_CTRL_FLAG_GRABBED flag atomically. - * Does nothing if @ctrl == NULL. - * The V4L2_EVENT_CTRL event will be generated afterwards. - * This will usually be called when starting or stopping streaming in the - * driver. - * - * This function assumes that the control handler is not locked and will - * take the lock itself. - */ +/** + * v4l2_ctrl_grab() - Mark the control as grabbed or not grabbed. + * @ctrl: The control to (de)activate. + * @grabbed: True if the control should become grabbed. + * + * This sets or clears the V4L2_CTRL_FLAG_GRABBED flag atomically. + * Does nothing if @ctrl == NULL. + * The V4L2_EVENT_CTRL event will be generated afterwards. + * This will usually be called when starting or stopping streaming in the + * driver. + * + * This function assumes that the control handler is not locked and will + * take the lock itself. + */ void v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed); -/** __v4l2_ctrl_modify_range() - Unlocked variant of v4l2_ctrl_modify_range() */ +/** + *__v4l2_ctrl_modify_range() - Unlocked variant of v4l2_ctrl_modify_range() + * + * @ctrl: The control to update. + * @min: The control's minimum value. + * @max: The control's maximum value. + * @step: The control's step value + * @def: The control's default value. + * + * Update the range of a control on the fly. This works for control types + * INTEGER, BOOLEAN, MENU, INTEGER MENU and BITMASK. For menu controls the + * @step value is interpreted as a menu_skip_mask. + * + * An error is returned if one of the range arguments is invalid for this + * control type. + * + * This function assumes that the control handler is not locked and will + * take the lock itself. + */ int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl, s64 min, s64 max, u64 step, s64 def); -/** v4l2_ctrl_modify_range() - Update the range of a control. - * @ctrl: The control to update. - * @min: The control's minimum value. - * @max: The control's maximum value. - * @step: The control's step value - * @def: The control's default value. - * - * Update the range of a control on the fly. This works for control types - * INTEGER, BOOLEAN, MENU, INTEGER MENU and BITMASK. For menu controls the - * @step value is interpreted as a menu_skip_mask. - * - * An error is returned if one of the range arguments is invalid for this - * control type. - * - * This function assumes that the control handler is not locked and will - * take the lock itself. - */ +/** + * v4l2_ctrl_modify_range() - Update the range of a control. + * @ctrl: The control to update. + * @min: The control's minimum value. + * @max: The control's maximum value. + * @step: The control's step value + * @def: The control's default value. + * + * Update the range of a control on the fly. This works for control types + * INTEGER, BOOLEAN, MENU, INTEGER MENU and BITMASK. For menu controls the + * @step value is interpreted as a menu_skip_mask. + * + * An error is returned if one of the range arguments is invalid for this + * control type. + * + * This function assumes that the control handler is not locked and will + * take the lock itself. + */ static inline int v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl, s64 min, s64 max, u64 step, s64 def) { @@ -656,21 +711,23 @@ static inline int v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl, return rval; } -/** v4l2_ctrl_notify() - Function to set a notify callback for a control. - * @ctrl: The control. - * @notify: The callback function. - * @priv: The callback private handle, passed as argument to the callback. - * - * This function sets a callback function for the control. If @ctrl is NULL, - * then it will do nothing. If @notify is NULL, then the notify callback will - * be removed. - * - * There can be only one notify. If another already exists, then a WARN_ON - * will be issued and the function will do nothing. - */ +/** + * v4l2_ctrl_notify() - Function to set a notify callback for a control. + * @ctrl: The control. + * @notify: The callback function. + * @priv: The callback private handle, passed as argument to the callback. + * + * This function sets a callback function for the control. If @ctrl is NULL, + * then it will do nothing. If @notify is NULL, then the notify callback will + * be removed. + * + * There can be only one notify. If another already exists, then a WARN_ON + * will be issued and the function will do nothing. + */ void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv); -/** v4l2_ctrl_get_name() - Get the name of the control +/** + * v4l2_ctrl_get_name() - Get the name of the control * @id: The control ID. * * This function returns the name of the given control ID or NULL if it isn't @@ -678,7 +735,8 @@ void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void */ const char *v4l2_ctrl_get_name(u32 id); -/** v4l2_ctrl_get_menu() - Get the menu string array of the control +/** + * v4l2_ctrl_get_menu() - Get the menu string array of the control * @id: The control ID. * * This function returns the NULL-terminated menu string array name of the @@ -686,7 +744,8 @@ const char *v4l2_ctrl_get_name(u32 id); */ const char * const *v4l2_ctrl_get_menu(u32 id); -/** v4l2_ctrl_get_int_menu() - Get the integer menu array of the control +/** + * v4l2_ctrl_get_int_menu() - Get the integer menu array of the control * @id: The control ID. * @len: The size of the integer array. * @@ -695,29 +754,41 @@ const char * const *v4l2_ctrl_get_menu(u32 id); */ const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len); -/** v4l2_ctrl_g_ctrl() - Helper function to get the control's value from within a driver. - * @ctrl: The control. - * - * This returns the control's value safely by going through the control - * framework. This function will lock the control's handler, so it cannot be - * used from within the &v4l2_ctrl_ops functions. - * - * This function is for integer type controls only. - */ +/** + * v4l2_ctrl_g_ctrl() - Helper function to get the control's value from within a driver. + * @ctrl: The control. + * + * This returns the control's value safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for integer type controls only. + */ s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl); -/** __v4l2_ctrl_s_ctrl() - Unlocked variant of v4l2_ctrl_s_ctrl(). */ +/** + * __v4l2_ctrl_s_ctrl() - Unlocked variant of v4l2_ctrl_s_ctrl(). + * @ctrl: The control. + * @val: The new value. + * + * This set the control's new value safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for integer type controls only. + */ int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val); + /** v4l2_ctrl_s_ctrl() - Helper function to set the control's value from within a driver. - * @ctrl: The control. - * @val: The new value. - * - * This set the control's new value safely by going through the control - * framework. This function will lock the control's handler, so it cannot be - * used from within the &v4l2_ctrl_ops functions. - * - * This function is for integer type controls only. - */ + * @ctrl: The control. + * @val: The new value. + * + * This set the control's new value safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for integer type controls only. + */ static inline int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) { int rval; @@ -729,30 +800,45 @@ static inline int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) return rval; } -/** v4l2_ctrl_g_ctrl_int64() - Helper function to get a 64-bit control's value from within a driver. - * @ctrl: The control. - * - * This returns the control's value safely by going through the control - * framework. This function will lock the control's handler, so it cannot be - * used from within the &v4l2_ctrl_ops functions. - * - * This function is for 64-bit integer type controls only. - */ +/** + * v4l2_ctrl_g_ctrl_int64() - Helper function to get a 64-bit control's value + * from within a driver. + * @ctrl: The control. + * + * This returns the control's value safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for 64-bit integer type controls only. + */ s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl); -/** __v4l2_ctrl_s_ctrl_int64() - Unlocked variant of v4l2_ctrl_s_ctrl_int64(). */ +/** + * __v4l2_ctrl_s_ctrl_int64() - Unlocked variant of v4l2_ctrl_s_ctrl_int64(). + * + * @ctrl: The control. + * @val: The new value. + * + * This set the control's new value safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for 64-bit integer type controls only. + */ int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val); -/** v4l2_ctrl_s_ctrl_int64() - Helper function to set a 64-bit control's value from within a driver. - * @ctrl: The control. - * @val: The new value. - * - * This set the control's new value safely by going through the control - * framework. This function will lock the control's handler, so it cannot be - * used from within the &v4l2_ctrl_ops functions. - * - * This function is for 64-bit integer type controls only. - */ +/** v4l2_ctrl_s_ctrl_int64() - Helper function to set a 64-bit control's value + * from within a driver. + * + * @ctrl: The control. + * @val: The new value. + * + * This set the control's new value safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for 64-bit integer type controls only. + */ static inline int v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) { int rval; @@ -764,19 +850,31 @@ static inline int v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) return rval; } -/** __v4l2_ctrl_s_ctrl_string() - Unlocked variant of v4l2_ctrl_s_ctrl_string(). */ +/** __v4l2_ctrl_s_ctrl_string() - Unlocked variant of v4l2_ctrl_s_ctrl_string(). + * + * @ctrl: The control. + * @s: The new string. + * + * This set the control's new string safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for string type controls only. + */ int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s); -/** v4l2_ctrl_s_ctrl_string() - Helper function to set a control's string value from within a driver. - * @ctrl: The control. - * @s: The new string. - * - * This set the control's new string safely by going through the control - * framework. This function will lock the control's handler, so it cannot be - * used from within the &v4l2_ctrl_ops functions. - * - * This function is for string type controls only. - */ +/** v4l2_ctrl_s_ctrl_string() - Helper function to set a control's string value + * from within a driver. + * + * @ctrl: The control. + * @s: The new string. + * + * This set the control's new string safely by going through the control + * framework. This function will lock the control's handler, so it cannot be + * used from within the &v4l2_ctrl_ops functions. + * + * This function is for string type controls only. + */ static inline int v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s) { int rval; diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h index e18a653549cd..b6130b50a0f1 100644 --- a/include/media/v4l2-dv-timings.h +++ b/include/media/v4l2-dv-timings.h @@ -23,11 +23,14 @@ #include <linux/videodev2.h> -/** v4l2_dv_timings_presets: list of all dv_timings presets. +/** + * v4l2_dv_timings_presets: list of all dv_timings presets. */ extern const struct v4l2_dv_timings v4l2_dv_timings_presets[]; -/** v4l2_check_dv_timings_fnc - timings check callback +/** + * v4l2_check_dv_timings_fnc - timings check callback + * * @t: the v4l2_dv_timings struct. * @handle: a handle from the driver. * @@ -35,83 +38,95 @@ extern const struct v4l2_dv_timings v4l2_dv_timings_presets[]; */ typedef bool v4l2_check_dv_timings_fnc(const struct v4l2_dv_timings *t, void *handle); -/** v4l2_valid_dv_timings() - are these timings valid? - * @t: the v4l2_dv_timings struct. - * @cap: the v4l2_dv_timings_cap capabilities. - * @fnc: callback to check if this timing is OK. May be NULL. - * @fnc_handle: a handle that is passed on to @fnc. - * - * Returns true if the given dv_timings struct is supported by the - * hardware capabilities and the callback function (if non-NULL), returns - * false otherwise. - */ +/** + * v4l2_valid_dv_timings() - are these timings valid? + * + * @t: the v4l2_dv_timings struct. + * @cap: the v4l2_dv_timings_cap capabilities. + * @fnc: callback to check if this timing is OK. May be NULL. + * @fnc_handle: a handle that is passed on to @fnc. + * + * Returns true if the given dv_timings struct is supported by the + * hardware capabilities and the callback function (if non-NULL), returns + * false otherwise. + */ bool v4l2_valid_dv_timings(const struct v4l2_dv_timings *t, const struct v4l2_dv_timings_cap *cap, v4l2_check_dv_timings_fnc fnc, void *fnc_handle); -/** v4l2_enum_dv_timings_cap() - Helper function to enumerate possible DV timings based on capabilities - * @t: the v4l2_enum_dv_timings struct. - * @cap: the v4l2_dv_timings_cap capabilities. - * @fnc: callback to check if this timing is OK. May be NULL. - * @fnc_handle: a handle that is passed on to @fnc. - * - * This enumerates dv_timings using the full list of possible CEA-861 and DMT - * timings, filtering out any timings that are not supported based on the - * hardware capabilities and the callback function (if non-NULL). - * - * If a valid timing for the given index is found, it will fill in @t and - * return 0, otherwise it returns -EINVAL. - */ +/** + * v4l2_enum_dv_timings_cap() - Helper function to enumerate possible DV + * timings based on capabilities + * + * @t: the v4l2_enum_dv_timings struct. + * @cap: the v4l2_dv_timings_cap capabilities. + * @fnc: callback to check if this timing is OK. May be NULL. + * @fnc_handle: a handle that is passed on to @fnc. + * + * This enumerates dv_timings using the full list of possible CEA-861 and DMT + * timings, filtering out any timings that are not supported based on the + * hardware capabilities and the callback function (if non-NULL). + * + * If a valid timing for the given index is found, it will fill in @t and + * return 0, otherwise it returns -EINVAL. + */ int v4l2_enum_dv_timings_cap(struct v4l2_enum_dv_timings *t, const struct v4l2_dv_timings_cap *cap, v4l2_check_dv_timings_fnc fnc, void *fnc_handle); -/** v4l2_find_dv_timings_cap() - Find the closest timings struct - * @t: the v4l2_enum_dv_timings struct. - * @cap: the v4l2_dv_timings_cap capabilities. - * @pclock_delta: maximum delta between t->pixelclock and the timing struct - * under consideration. - * @fnc: callback to check if a given timings struct is OK. May be NULL. - * @fnc_handle: a handle that is passed on to @fnc. - * - * This function tries to map the given timings to an entry in the - * full list of possible CEA-861 and DMT timings, filtering out any timings - * that are not supported based on the hardware capabilities and the callback - * function (if non-NULL). - * - * On success it will fill in @t with the found timings and it returns true. - * On failure it will return false. - */ +/** + * v4l2_find_dv_timings_cap() - Find the closest timings struct + * + * @t: the v4l2_enum_dv_timings struct. + * @cap: the v4l2_dv_timings_cap capabilities. + * @pclock_delta: maximum delta between t->pixelclock and the timing struct + * under consideration. + * @fnc: callback to check if a given timings struct is OK. May be NULL. + * @fnc_handle: a handle that is passed on to @fnc. + * + * This function tries to map the given timings to an entry in the + * full list of possible CEA-861 and DMT timings, filtering out any timings + * that are not supported based on the hardware capabilities and the callback + * function (if non-NULL). + * + * On success it will fill in @t with the found timings and it returns true. + * On failure it will return false. + */ bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t, const struct v4l2_dv_timings_cap *cap, unsigned pclock_delta, v4l2_check_dv_timings_fnc fnc, void *fnc_handle); -/** v4l2_match_dv_timings() - do two timings match? - * @measured: the measured timings data. - * @standard: the timings according to the standard. - * @pclock_delta: maximum delta in Hz between standard->pixelclock and - * the measured timings. - * - * Returns true if the two timings match, returns false otherwise. - */ +/** + * v4l2_match_dv_timings() - do two timings match? + * + * @measured: the measured timings data. + * @standard: the timings according to the standard. + * @pclock_delta: maximum delta in Hz between standard->pixelclock and + * the measured timings. + * + * Returns true if the two timings match, returns false otherwise. + */ bool v4l2_match_dv_timings(const struct v4l2_dv_timings *measured, const struct v4l2_dv_timings *standard, unsigned pclock_delta); -/** v4l2_print_dv_timings() - log the contents of a dv_timings struct - * @dev_prefix:device prefix for each log line. - * @prefix: additional prefix for each log line, may be NULL. - * @t: the timings data. - * @detailed: if true, give a detailed log. - */ +/** + * v4l2_print_dv_timings() - log the contents of a dv_timings struct + * @dev_prefix:device prefix for each log line. + * @prefix: additional prefix for each log line, may be NULL. + * @t: the timings data. + * @detailed: if true, give a detailed log. + */ void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix, const struct v4l2_dv_timings *t, bool detailed); -/** v4l2_detect_cvt - detect if the given timings follow the CVT standard +/** + * v4l2_detect_cvt - detect if the given timings follow the CVT standard + * * @frame_height - the total height of the frame (including blanking) in lines. * @hfreq - the horizontal frequency in Hz. * @vsync - the height of the vertical sync in lines. @@ -131,7 +146,9 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, unsigned active_width, u32 polarities, bool interlaced, struct v4l2_dv_timings *fmt); -/** v4l2_detect_gtf - detect if the given timings follow the GTF standard +/** + * v4l2_detect_gtf - detect if the given timings follow the GTF standard + * * @frame_height - the total height of the frame (including blanking) in lines. * @hfreq - the horizontal frequency in Hz. * @vsync - the height of the vertical sync in lines. @@ -153,8 +170,10 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync, u32 polarities, bool interlaced, struct v4l2_fract aspect, struct v4l2_dv_timings *fmt); -/** v4l2_calc_aspect_ratio - calculate the aspect ratio based on bytes +/** + * v4l2_calc_aspect_ratio - calculate the aspect ratio based on bytes * 0x15 and 0x16 from the EDID. + * * @hor_landscape - byte 0x15 from the EDID. * @vert_portrait - byte 0x16 from the EDID. * diff --git a/include/media/v4l2-event.h b/include/media/v4l2-event.h index 1ab9045e52e3..9792f906423b 100644 --- a/include/media/v4l2-event.h +++ b/include/media/v4l2-event.h @@ -68,10 +68,11 @@ struct v4l2_subdev; struct v4l2_subscribed_event; struct video_device; -/** struct v4l2_kevent - Internal kernel event struct. - * @list: List node for the v4l2_fh->available list. - * @sev: Pointer to parent v4l2_subscribed_event. - * @event: The event itself. +/** + * struct v4l2_kevent - Internal kernel event struct. + * @list: List node for the v4l2_fh->available list. + * @sev: Pointer to parent v4l2_subscribed_event. + * @event: The event itself. */ struct v4l2_kevent { struct list_head list; @@ -80,11 +81,12 @@ struct v4l2_kevent { }; /** struct v4l2_subscribed_event_ops - Subscribed event operations. - * @add: Optional callback, called when a new listener is added - * @del: Optional callback, called when a listener stops listening - * @replace: Optional callback that can replace event 'old' with event 'new'. - * @merge: Optional callback that can merge event 'old' into event 'new'. - */ + * + * @add: Optional callback, called when a new listener is added + * @del: Optional callback, called when a listener stops listening + * @replace: Optional callback that can replace event 'old' with event 'new'. + * @merge: Optional callback that can merge event 'old' into event 'new'. + */ struct v4l2_subscribed_event_ops { int (*add)(struct v4l2_subscribed_event *sev, unsigned elems); void (*del)(struct v4l2_subscribed_event *sev); @@ -92,19 +94,20 @@ struct v4l2_subscribed_event_ops { void (*merge)(const struct v4l2_event *old, struct v4l2_event *new); }; -/** struct v4l2_subscribed_event - Internal struct representing a subscribed event. - * @list: List node for the v4l2_fh->subscribed list. - * @type: Event type. - * @id: Associated object ID (e.g. control ID). 0 if there isn't any. - * @flags: Copy of v4l2_event_subscription->flags. - * @fh: Filehandle that subscribed to this event. - * @node: List node that hooks into the object's event list (if there is one). - * @ops: v4l2_subscribed_event_ops - * @elems: The number of elements in the events array. - * @first: The index of the events containing the oldest available event. - * @in_use: The number of queued events. - * @events: An array of @elems events. - */ +/** + * struct v4l2_subscribed_event - Internal struct representing a subscribed event. + * @list: List node for the v4l2_fh->subscribed list. + * @type: Event type. + * @id: Associated object ID (e.g. control ID). 0 if there isn't any. + * @flags: Copy of v4l2_event_subscription->flags. + * @fh: Filehandle that subscribed to this event. + * @node: List node that hooks into the object's event list (if there is one). + * @ops: v4l2_subscribed_event_ops + * @elems: The number of elements in the events array. + * @first: The index of the events containing the oldest available event. + * @in_use: The number of queued events. + * @events: An array of @elems events. + */ struct v4l2_subscribed_event { struct list_head list; u32 type; diff --git a/include/media/v4l2-flash-led-class.h b/include/media/v4l2-flash-led-class.h index 098236c083b8..3d184ab52274 100644 --- a/include/media/v4l2-flash-led-class.h +++ b/include/media/v4l2-flash-led-class.h @@ -48,13 +48,13 @@ struct v4l2_flash_ops { /** * struct v4l2_flash_config - V4L2 Flash sub-device initialization data * @dev_name: the name of the media entity, - unique in the system + * unique in the system * @torch_intensity: constraints for the LED in torch mode * @indicator_intensity: constraints for the indicator LED * @flash_faults: bitmask of flash faults that the LED flash class - device can report; corresponding LED_FAULT* bit - definitions are available in the header file - <linux/led-class-flash.h> + * device can report; corresponding LED_FAULT* bit + * definitions are available in the header file + * <linux/led-class-flash.h> * @has_external_strobe: external strobe capability */ struct v4l2_flash_config { @@ -105,7 +105,7 @@ static inline struct v4l2_flash *v4l2_ctrl_to_v4l2_flash(struct v4l2_ctrl *c) * @fled_cdev: LED flash class device to wrap * @iled_cdev: LED flash class device representing indicator LED associated * with fled_cdev, may be NULL - * @flash_ops: V4L2 Flash device ops + * @ops: V4L2 Flash device ops * @config: initialization data for V4L2 Flash sub-device * * Create V4L2 Flash sub-device wrapping given LED subsystem device. @@ -123,7 +123,7 @@ struct v4l2_flash *v4l2_flash_init( /** * v4l2_flash_release - release V4L2 Flash sub-device - * @flash: the V4L2 Flash sub-device to release + * @v4l2_flash: the V4L2 Flash sub-device to release * * Release V4L2 Flash sub-device. */ diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h index 73069e4c2796..34cc99e093ef 100644 --- a/include/media/v4l2-mediabus.h +++ b/include/media/v4l2-mediabus.h @@ -65,7 +65,7 @@ V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3) /** - * v4l2_mbus_type - media bus type + * enum v4l2_mbus_type - media bus type * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can * also be used for BT.1120 @@ -78,7 +78,7 @@ enum v4l2_mbus_type { }; /** - * v4l2_mbus_config - media bus configuration + * struct v4l2_mbus_config - media bus configuration * @type: in: interface type * @flags: in / out: configuration flags, depending on @type */ diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index 3bbd96da25c9..8849aaba6aa5 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -40,6 +40,10 @@ * v4l2_m2m_job_finish() (as if the transaction ended normally). * This function does not have to (and will usually not) wait * until the device enters a state when it can be stopped. + * @lock: optional. Define a driver's own lock callback, instead of using + * m2m_ctx->q_lock. + * @unlock: optional. Define a driver's own unlock callback, instead of + * using m2m_ctx->q_lock. */ struct v4l2_m2m_ops { void (*device_run)(void *priv); @@ -161,6 +165,8 @@ void v4l2_m2m_buf_queue(struct v4l2_m2m_ctx *m2m_ctx, struct vb2_buffer *vb); /** * v4l2_m2m_num_src_bufs_ready() - return the number of source buffers ready for * use + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline unsigned int v4l2_m2m_num_src_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx) @@ -171,6 +177,8 @@ unsigned int v4l2_m2m_num_src_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx) /** * v4l2_m2m_num_src_bufs_ready() - return the number of destination buffers * ready for use + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline unsigned int v4l2_m2m_num_dst_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx) @@ -183,6 +191,8 @@ void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx); /** * v4l2_m2m_next_src_buf() - return next source buffer from the list of ready * buffers + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline void *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx) { @@ -192,6 +202,8 @@ static inline void *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx) /** * v4l2_m2m_next_dst_buf() - return next destination buffer from the list of * ready buffers + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline void *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx) { @@ -200,6 +212,8 @@ static inline void *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx) /** * v4l2_m2m_get_src_vq() - return vb2_queue for source buffers + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline struct vb2_queue *v4l2_m2m_get_src_vq(struct v4l2_m2m_ctx *m2m_ctx) @@ -209,6 +223,8 @@ struct vb2_queue *v4l2_m2m_get_src_vq(struct v4l2_m2m_ctx *m2m_ctx) /** * v4l2_m2m_get_dst_vq() - return vb2_queue for destination buffers + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline struct vb2_queue *v4l2_m2m_get_dst_vq(struct v4l2_m2m_ctx *m2m_ctx) @@ -221,6 +237,8 @@ void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx); /** * v4l2_m2m_src_buf_remove() - take off a source buffer from the list of ready * buffers and return it + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline void *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx) { @@ -230,6 +248,8 @@ static inline void *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx) /** * v4l2_m2m_dst_buf_remove() - take off a destination buffer from the list of * ready buffers and return it + * + * @m2m_ctx: pointer to struct v4l2_m2m_ctx */ static inline void *v4l2_m2m_dst_buf_remove(struct v4l2_m2m_ctx *m2m_ctx) { diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 370fc38c34f1..b273cf9ac047 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -118,34 +118,67 @@ struct v4l2_subdev_io_pin_config { u8 strength; /* Pin drive strength */ }; -/* - s_io_pin_config: configure one or more chip I/O pins for chips that - multiplex different internal signal pads out to IO pins. This function - takes a pointer to an array of 'n' pin configuration entries, one for - each pin being configured. This function could be called at times - other than just subdevice initialization. - - init: initialize the sensor registers to some sort of reasonable default - values. Do not use for new drivers and should be removed in existing - drivers. - - load_fw: load firmware. - - reset: generic reset command. The argument selects which subsystems to - reset. Passing 0 will always reset the whole chip. Do not use for new - drivers without discussing this first on the linux-media mailinglist. - There should be no reason normally to reset a device. - - s_gpio: set GPIO pins. Very simple right now, might need to be extended with - a direction argument if needed. - - s_power: puts subdevice in power saving mode (on == 0) or normal operation - mode (on == 1). - - interrupt_service_routine: Called by the bridge chip's interrupt service - handler, when an interrupt status has be raised due to this subdev, - so that this subdev can handle the details. It may schedule work to be - performed later. It must not sleep. *Called from an IRQ context*. +/** + * struct v4l2_subdev_core_ops - Define core ops callbacks for subdevs + * + * @log_status: callback for VIDIOC_LOG_STATUS ioctl handler code. + * + * @s_io_pin_config: configure one or more chip I/O pins for chips that + * multiplex different internal signal pads out to IO pins. This function + * takes a pointer to an array of 'n' pin configuration entries, one for + * each pin being configured. This function could be called at times + * other than just subdevice initialization. + * + * @init: initialize the sensor registers to some sort of reasonable default + * values. Do not use for new drivers and should be removed in existing + * drivers. + * + * @load_fw: load firmware. + * + * @reset: generic reset command. The argument selects which subsystems to + * reset. Passing 0 will always reset the whole chip. Do not use for new + * drivers without discussing this first on the linux-media mailinglist. + * There should be no reason normally to reset a device. + * + * @s_gpio: set GPIO pins. Very simple right now, might need to be extended with + * a direction argument if needed. + * + * @queryctrl: callback for VIDIOC_QUERYCTL ioctl handler code. + * + * @g_ctrl: callback for VIDIOC_G_CTRL ioctl handler code. + * + * @s_ctrl: callback for VIDIOC_S_CTRL ioctl handler code. + * + * @g_ext_ctrls: callback for VIDIOC_G_EXT_CTRLS ioctl handler code. + * + * @s_ext_ctrls: callback for VIDIOC_S_EXT_CTRLS ioctl handler code. + * + * @try_ext_ctrls: callback for VIDIOC_TRY_EXT_CTRLS ioctl handler code. + * + * @querymenu: callback for VIDIOC_QUERYMENU ioctl handler code. + * + * @ioctl: called at the end of ioctl() syscall handler at the V4L2 core. + * used to provide support for private ioctls used on the driver. + * + * @compat_ioctl32: called when a 32 bits application uses a 64 bits Kernel, + * in order to fix data passed from/to userspace. + * + * @g_register: callback for VIDIOC_G_REGISTER ioctl handler code. + * + * @s_register: callback for VIDIOC_G_REGISTER ioctl handler code. + * + * @s_power: puts subdevice in power saving mode (on == 0) or normal operation + * mode (on == 1). + * + * @interrupt_service_routine: Called by the bridge chip's interrupt service + * handler, when an interrupt status has be raised due to this subdev, + * so that this subdev can handle the details. It may schedule work to be + * performed later. It must not sleep. *Called from an IRQ context*. + * + * @subscribe_event: used by the drivers to request the control framework that + * for it to be warned when the value of a control changes. + * + * @unsubscribe_event: remove event subscription from the control framework. */ struct v4l2_subdev_core_ops { int (*log_status)(struct v4l2_subdev *sd); @@ -180,18 +213,32 @@ struct v4l2_subdev_core_ops { struct v4l2_event_subscription *sub); }; -/* s_radio: v4l device was opened in radio mode. - - g_frequency: freq->type must be filled in. Normally done by video_ioctl2 - or the bridge driver. - - g_tuner: - s_tuner: vt->type must be filled in. Normally done by video_ioctl2 or the - bridge driver. - - s_type_addr: sets tuner type and its I2C addr. - - s_config: sets tda9887 specific stuff, like port1, port2 and qss +/** + * struct s_radio - Callbacks used when v4l device was opened in radio mode. + * + * @s_radio: callback for VIDIOC_S_RADIO ioctl handler code. + * + * @s_frequency: callback for VIDIOC_S_FREQUENCY ioctl handler code. + * + * @g_frequency: callback for VIDIOC_G_FREQUENCY ioctl handler code. + * freq->type must be filled in. Normally done by video_ioctl2 + * or the bridge driver. + * + * @enum_freq_bands: callback for VIDIOC_ENUM_FREQ_BANDS ioctl handler code. + * + * @g_tuner: callback for VIDIOC_G_TUNER ioctl handler code. + * + * @s_tuner: callback for VIDIOC_S_TUNER ioctl handler code. vt->type must be + * filled in. Normally done by video_ioctl2 or the + * bridge driver. + * + * @g_modulator: callback for VIDIOC_G_MODULATOR ioctl handler code. + * + * @s_modulator: callback for VIDIOC_S_MODULATOR ioctl handler code. + * + * @s_type_addr: sets tuner type and its I2C addr. + * + * @s_config: sets tda9887 specific stuff, like port1, port2 and qss */ struct v4l2_subdev_tuner_ops { int (*s_radio)(struct v4l2_subdev *sd); @@ -206,25 +253,31 @@ struct v4l2_subdev_tuner_ops { int (*s_config)(struct v4l2_subdev *sd, const struct v4l2_priv_tun_config *config); }; -/* s_clock_freq: set the frequency (in Hz) of the audio clock output. - Used to slave an audio processor to the video decoder, ensuring that - audio and video remain synchronized. Usual values for the frequency - are 48000, 44100 or 32000 Hz. If the frequency is not supported, then - -EINVAL is returned. - - s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard - way to select I2S clock used by driving digital audio streams at some - board designs. Usual values for the frequency are 1024000 and 2048000. - If the frequency is not supported, then -EINVAL is returned. - - s_routing: used to define the input and/or output pins of an audio chip, - and any additional configuration data. - Never attempt to use user-level input IDs (e.g. Composite, S-Video, - Tuner) at this level. An i2c device shouldn't know about whether an - input pin is connected to a Composite connector, become on another - board or platform it might be connected to something else entirely. - The calling driver is responsible for mapping a user-level input to - the right pins on the i2c device. +/** + * struct v4l2_subdev_audio_ops - Callbacks used for audio-related settings + * + * @s_clock_freq: set the frequency (in Hz) of the audio clock output. + * Used to slave an audio processor to the video decoder, ensuring that + * audio and video remain synchronized. Usual values for the frequency + * are 48000, 44100 or 32000 Hz. If the frequency is not supported, then + * -EINVAL is returned. + * + * @s_i2s_clock_freq: sets I2S speed in bps. This is used to provide a standard + * way to select I2S clock used by driving digital audio streams at some + * board designs. Usual values for the frequency are 1024000 and 2048000. + * If the frequency is not supported, then -EINVAL is returned. + * + * @s_routing: used to define the input and/or output pins of an audio chip, + * and any additional configuration data. + * Never attempt to use user-level input IDs (e.g. Composite, S-Video, + * Tuner) at this level. An i2c device shouldn't know about whether an + * input pin is connected to a Composite connector, become on another + * board or platform it might be connected to something else entirely. + * The calling driver is responsible for mapping a user-level input to + * the right pins on the i2c device. + * + * @s_stream: used to notify the audio code that stream will start or has + * stopped. */ struct v4l2_subdev_audio_ops { int (*s_clock_freq)(struct v4l2_subdev *sd, u32 freq); @@ -243,6 +296,7 @@ struct v4l2_subdev_audio_ops { /** * struct v4l2_mbus_frame_desc_entry - media bus frame description structure + * * @flags: V4L2_MBUS_FRAME_DESC_FL_* flags * @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set * @length: number of octets per frame, valid if V4L2_MBUS_FRAME_DESC_FL_BLOB @@ -266,45 +320,73 @@ struct v4l2_mbus_frame_desc { unsigned short num_entries; }; -/* - s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by - video input devices. - - g_std_output: get current standard for video OUTPUT devices. This is ignored - by video input devices. - - g_tvnorms: get v4l2_std_id with all standards supported by the video - CAPTURE device. This is ignored by video output devices. - - g_tvnorms_output: get v4l2_std_id with all standards supported by the video - OUTPUT device. This is ignored by video capture devices. - - s_crystal_freq: sets the frequency of the crystal used to generate the - clocks in Hz. An extra flags field allows device specific configuration - regarding clock frequency dividers, etc. If not used, then set flags - to 0. If the frequency is not supported, then -EINVAL is returned. - - g_input_status: get input status. Same as the status field in the v4l2_input - struct. - - s_routing: see s_routing in audio_ops, except this version is for video - devices. - - s_dv_timings(): Set custom dv timings in the sub device. This is used - when sub device is capable of setting detailed timing information - in the hardware to generate/detect the video signal. - - g_dv_timings(): Get custom dv timings in the sub device. - - g_mbus_config: get supported mediabus configurations - - s_mbus_config: set a certain mediabus configuration. This operation is added - for compatibility with soc-camera drivers and should not be used by new - software. - - s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev - can adjust @size to a lower value and must not write more data to the - buffer starting at @data than the original value of @size. +/** + * struct v4l2_subdev_video_ops - Callbacks used when v4l device was opened + * in video mode. + * + * @s_routing: see s_routing in audio_ops, except this version is for video + * devices. + * + * @s_crystal_freq: sets the frequency of the crystal used to generate the + * clocks in Hz. An extra flags field allows device specific configuration + * regarding clock frequency dividers, etc. If not used, then set flags + * to 0. If the frequency is not supported, then -EINVAL is returned. + * + * @g_std: callback for VIDIOC_G_STD ioctl handler code. + * + * @s_std: callback for VIDIOC_S_STD ioctl handler code. + * + * @s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by + * video input devices. + * + * @g_std_output: get current standard for video OUTPUT devices. This is ignored + * by video input devices. + * + * @querystd: callback for VIDIOC_QUERYSTD ioctl handler code. + * + * @g_tvnorms: get v4l2_std_id with all standards supported by the video + * CAPTURE device. This is ignored by video output devices. + * + * @g_tvnorms_output: get v4l2_std_id with all standards supported by the video + * OUTPUT device. This is ignored by video capture devices. + * + * @g_input_status: get input status. Same as the status field in the v4l2_input + * struct. + * + * @s_stream: used to notify the driver that a video stream will start or has + * stopped. + * + * @cropcap: callback for VIDIOC_CROPCAP ioctl handler code. + * + * @g_crop: callback for VIDIOC_G_CROP ioctl handler code. + * + * @s_crop: callback for VIDIOC_S_CROP ioctl handler code. + * + * @g_parm: callback for VIDIOC_G_PARM ioctl handler code. + * + * @s_parm: callback for VIDIOC_S_PARM ioctl handler code. + * + * @g_frame_interval: callback for VIDIOC_G_FRAMEINTERVAL ioctl handler code. + * + * @s_frame_interval: callback for VIDIOC_S_FRAMEINTERVAL ioctl handler code. + * + * @s_dv_timings: Set custom dv timings in the sub device. This is used + * when sub device is capable of setting detailed timing information + * in the hardware to generate/detect the video signal. + * + * @g_dv_timings: Get custom dv timings in the sub device. + * + * @query_dv_timings: callback for VIDIOC_QUERY_DV_TIMINGS ioctl handler code. + * + * @g_mbus_config: get supported mediabus configurations + * + * @s_mbus_config: set a certain mediabus configuration. This operation is added + * for compatibility with soc-camera drivers and should not be used by new + * software. + * + * @s_rx_buffer: set a host allocated memory buffer for the subdev. The subdev + * can adjust @size to a lower value and must not write more data to the + * buffer starting at @data than the original value of @size. */ struct v4l2_subdev_video_ops { int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); @@ -341,34 +423,39 @@ struct v4l2_subdev_video_ops { unsigned int *size); }; -/* - decode_vbi_line: video decoders that support sliced VBI need to implement - this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the - start of the VBI data that was generated by the decoder. The driver - then parses the sliced VBI data and sets the other fields in the - struct accordingly. The pointer p is updated to point to the start of - the payload which can be copied verbatim into the data field of the - v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the - type field is set to 0 on return. - - s_vbi_data: used to generate VBI signals on a video signal. - v4l2_sliced_vbi_data is filled with the data packets that should be - output. Note that if you set the line field to 0, then that VBI signal - is disabled. If no valid VBI data was found, then the type field is - set to 0 on return. - - g_vbi_data: used to obtain the sliced VBI packet from a readback register. - Not all video decoders support this. If no data is available because - the readback register contains invalid or erroneous data -EIO is - returned. Note that you must fill in the 'id' member and the 'field' - member (to determine whether CC data from the first or second field - should be obtained). - - s_raw_fmt: setup the video encoder/decoder for raw VBI. - - g_sliced_fmt: retrieve the current sliced VBI settings. - - s_sliced_fmt: setup the sliced VBI settings. +/** + * struct v4l2_subdev_vbi_ops - Callbacks used when v4l device was opened + * in video mode via the vbi device node. + * + * @decode_vbi_line: video decoders that support sliced VBI need to implement + * this ioctl. Field p of the v4l2_sliced_vbi_line struct is set to the + * start of the VBI data that was generated by the decoder. The driver + * then parses the sliced VBI data and sets the other fields in the + * struct accordingly. The pointer p is updated to point to the start of + * the payload which can be copied verbatim into the data field of the + * v4l2_sliced_vbi_data struct. If no valid VBI data was found, then the + * type field is set to 0 on return. + * + * @s_vbi_data: used to generate VBI signals on a video signal. + * v4l2_sliced_vbi_data is filled with the data packets that should be + * output. Note that if you set the line field to 0, then that VBI signal + * is disabled. If no valid VBI data was found, then the type field is + * set to 0 on return. + * + * @g_vbi_data: used to obtain the sliced VBI packet from a readback register. + * Not all video decoders support this. If no data is available because + * the readback register contains invalid or erroneous data -EIO is + * returned. Note that you must fill in the 'id' member and the 'field' + * member (to determine whether CC data from the first or second field + * should be obtained). + * + * @g_sliced_vbi_cap: callback for VIDIOC_SLICED_VBI_CAP ioctl handler code. + * + * @s_raw_fmt: setup the video encoder/decoder for raw VBI. + * + * @g_sliced_fmt: retrieve the current sliced VBI settings. + * + * @s_sliced_fmt: setup the sliced VBI settings. */ struct v4l2_subdev_vbi_ops { int (*decode_vbi_line)(struct v4l2_subdev *sd, struct v4l2_decode_vbi_line *vbi_line); @@ -481,8 +568,39 @@ struct v4l2_subdev_pad_config { /** * struct v4l2_subdev_pad_ops - v4l2-subdev pad level operations + * + * @enum_mbus_code: callback for VIDIOC_SUBDEV_ENUM_MBUS_CODE ioctl handler + * code. + * @enum_frame_size: callback for VIDIOC_SUBDEV_ENUM_FRAME_SIZE ioctl handler + * code. + * + * @enum_frame_interval: callback for VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL ioctl + * handler code. + * + * @get_fmt: callback for VIDIOC_SUBDEV_G_FMT ioctl handler code. + * + * @set_fmt: callback for VIDIOC_SUBDEV_S_FMT ioctl handler code. + * + * @get_selection: callback for VIDIOC_SUBDEV_G_SELECTION ioctl handler code. + * + * @set_selection: callback for VIDIOC_SUBDEV_S_SELECTION ioctl handler code. + * + * @get_edid: callback for VIDIOC_SUBDEV_G_EDID ioctl handler code. + * + * @set_edid: callback for VIDIOC_SUBDEV_S_EDID ioctl handler code. + * + * @dv_timings_cap: callback for VIDIOC_SUBDEV_DV_TIMINGS_CAP ioctl handler + * code. + * + * @enum_dv_timings: callback for VIDIOC_SUBDEV_ENUM_DV_TIMINGS ioctl handler + * code. + * + * @link_validate: used by the media controller code to check if the links + * that belongs to a pipeline can be used for stream. + * * @get_frame_desc: get the current low level media bus frame parameters. - * @get_frame_desc: set the low level media bus frame parameters, @fd array + * + * @set_frame_desc: set the low level media bus frame parameters, @fd array * may be adjusted by the subdev driver to device capabilities. */ struct v4l2_subdev_pad_ops { diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h index 8c6e825940e5..d760aa73ebbb 100644 --- a/include/media/videobuf-core.h +++ b/include/media/videobuf-core.h @@ -37,7 +37,7 @@ struct videobuf_queue; * * about the mmap helpers (videobuf_mmap_*): * - * The mmaper function allows to map any subset of contingous buffers. + * The mmaper function allows to map any subset of contiguous buffers. * This includes one mmap() call for all buffers (which the original * video4linux API uses) as well as one mmap() for every single buffer * (which v4l2 uses). diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 22a44c2f5963..589b56c68400 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -139,6 +139,7 @@ enum vb2_io_modes { * @VB2_BUF_STATE_PREPARING: buffer is being prepared in videobuf * @VB2_BUF_STATE_PREPARED: buffer prepared in videobuf and by the driver * @VB2_BUF_STATE_QUEUED: buffer queued in videobuf, but not in driver + * @VB2_BUF_STATE_REQUEUEING: re-queue a buffer to the driver * @VB2_BUF_STATE_ACTIVE: buffer queued in driver and possibly used * in a hardware operation * @VB2_BUF_STATE_DONE: buffer returned from driver to videobuf, but @@ -152,6 +153,7 @@ enum vb2_buffer_state { VB2_BUF_STATE_PREPARING, VB2_BUF_STATE_PREPARED, VB2_BUF_STATE_QUEUED, + VB2_BUF_STATE_REQUEUEING, VB2_BUF_STATE_ACTIVE, VB2_BUF_STATE_DONE, VB2_BUF_STATE_ERROR, @@ -362,7 +364,9 @@ struct v4l2_fh; * start_streaming() can be called. Used when a DMA engine * cannot be started unless at least this number of buffers * have been queued into the driver. - * + */ +/* + * Private elements (won't appear at the DocBook): * @mmap_lock: private mutex used when buffers are allocated/freed/mmapped * @memory: current memory type used * @bufs: videobuf buffer structures @@ -405,7 +409,7 @@ struct vb2_queue { gfp_t gfp_flags; u32 min_buffers_needed; -/* private: internal use only */ + /* private: internal use only */ struct mutex mmap_lock; enum v4l2_memory memory; struct vb2_buffer *bufs[VIDEO_MAX_FRAME]; @@ -482,7 +486,8 @@ size_t vb2_read(struct vb2_queue *q, char __user *data, size_t count, loff_t *ppos, int nonblock); size_t vb2_write(struct vb2_queue *q, const char __user *data, size_t count, loff_t *ppos, int nonblock); -/** + +/* * vb2_thread_fnc - callback function for use with vb2_thread * * This is called whenever a buffer is dequeued in the thread. @@ -575,7 +580,6 @@ static inline void vb2_set_plane_payload(struct vb2_buffer *vb, * vb2_get_plane_payload() - get bytesused for the plane plane_no * @vb: buffer for which plane payload should be set * @plane_no: plane number for which payload should be set - * @size: payload in bytes */ static inline unsigned long vb2_get_plane_payload(struct vb2_buffer *vb, unsigned int plane_no) diff --git a/include/media/videobuf2-memops.h b/include/media/videobuf2-memops.h index 830b5239fd8b..6513c7ec3116 100644 --- a/include/media/videobuf2-memops.h +++ b/include/media/videobuf2-memops.h @@ -18,7 +18,8 @@ #include <linux/mm.h> /** - * vb2_vmarea_handler - common vma refcount tracking handler + * struct vb2_vmarea_handler - common vma refcount tracking handler + * * @refcount: pointer to refcount entry in the buffer * @put: callback to function that decreases buffer refcount * @arg: argument for @put callback |