| /* |
| * Copyright © 2006 Keith Packard |
| * Copyright © 2007-2008 Dave Airlie |
| * Copyright © 2007-2008 Intel Corporation |
| * Jesse Barnes <jesse.barnes@intel.com> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #ifndef __DRM_CRTC_H__ |
| #define __DRM_CRTC_H__ |
| |
| #include <linux/i2c.h> |
| #include <linux/spinlock.h> |
| #include <linux/types.h> |
| #include <linux/idr.h> |
| #include <linux/fb.h> |
| #include <linux/hdmi.h> |
| #include <linux/media-bus-format.h> |
| #include <uapi/drm/drm_mode.h> |
| #include <uapi/drm/drm_fourcc.h> |
| #include <drm/drm_modeset_lock.h> |
| #include <drm/drm_rect.h> |
| #include <drm/drm_mode_object.h> |
| #include <drm/drm_framebuffer.h> |
| #include <drm/drm_modes.h> |
| #include <drm/drm_connector.h> |
| #include <drm/drm_encoder.h> |
| #include <drm/drm_property.h> |
| #include <drm/drm_bridge.h> |
| #include <drm/drm_edid.h> |
| #include <drm/drm_plane.h> |
| #include <drm/drm_blend.h> |
| #include <drm/drm_color_mgmt.h> |
| |
| struct drm_device; |
| struct drm_mode_set; |
| struct drm_file; |
| struct drm_clip_rect; |
| struct device_node; |
| struct fence; |
| struct edid; |
| |
| static inline int64_t U642I64(uint64_t val) |
| { |
| return (int64_t)*((int64_t *)&val); |
| } |
| static inline uint64_t I642U64(int64_t val) |
| { |
| return (uint64_t)*((uint64_t *)&val); |
| } |
| |
| /* data corresponds to displayid vend/prod/serial */ |
| struct drm_tile_group { |
| struct kref refcount; |
| struct drm_device *dev; |
| int id; |
| u8 group_data[8]; |
| }; |
| |
| struct drm_crtc; |
| struct drm_encoder; |
| struct drm_pending_vblank_event; |
| struct drm_plane; |
| struct drm_bridge; |
| struct drm_atomic_state; |
| |
| struct drm_crtc_helper_funcs; |
| struct drm_encoder_helper_funcs; |
| struct drm_plane_helper_funcs; |
| |
| /** |
| * struct drm_crtc_state - mutable CRTC state |
| * @crtc: backpointer to the CRTC |
| * @enable: whether the CRTC should be enabled, gates all other state |
| * @active: whether the CRTC is actively displaying (used for DPMS) |
| * @planes_changed: planes on this crtc are updated |
| * @mode_changed: crtc_state->mode or crtc_state->enable has been changed |
| * @active_changed: crtc_state->active has been toggled. |
| * @connectors_changed: connectors to this crtc have been updated |
| * @zpos_changed: zpos values of planes on this crtc have been updated |
| * @color_mgmt_changed: color management properties have changed (degamma or |
| * gamma LUT or CSC matrix) |
| * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes |
| * @connector_mask: bitmask of (1 << drm_connector_index(connector)) of attached connectors |
| * @encoder_mask: bitmask of (1 << drm_encoder_index(encoder)) of attached encoders |
| * @last_vblank_count: for helpers and drivers to capture the vblank of the |
| * update to ensure framebuffer cleanup isn't done too early |
| * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings |
| * @mode: current mode timings |
| * @mode_blob: &drm_property_blob for @mode |
| * @degamma_lut: Lookup table for converting framebuffer pixel data |
| * before apply the conversion matrix |
| * @ctm: Transformation matrix |
| * @gamma_lut: Lookup table for converting pixel data after the |
| * conversion matrix |
| * @state: backpointer to global drm_atomic_state |
| * |
| * Note that the distinction between @enable and @active is rather subtile: |
| * Flipping @active while @enable is set without changing anything else may |
| * never return in a failure from the ->atomic_check callback. Userspace assumes |
| * that a DPMS On will always succeed. In other words: @enable controls resource |
| * assignment, @active controls the actual hardware state. |
| */ |
| struct drm_crtc_state { |
| struct drm_crtc *crtc; |
| |
| bool enable; |
| bool active; |
| |
| /* computed state bits used by helpers and drivers */ |
| bool planes_changed : 1; |
| bool mode_changed : 1; |
| bool active_changed : 1; |
| bool connectors_changed : 1; |
| bool zpos_changed : 1; |
| bool color_mgmt_changed : 1; |
| |
| /* attached planes bitmask: |
| * WARNING: transitional helpers do not maintain plane_mask so |
| * drivers not converted over to atomic helpers should not rely |
| * on plane_mask being accurate! |
| */ |
| u32 plane_mask; |
| |
| u32 connector_mask; |
| u32 encoder_mask; |
| |
| /* last_vblank_count: for vblank waits before cleanup */ |
| u32 last_vblank_count; |
| |
| /* adjusted_mode: for use by helpers and drivers */ |
| struct drm_display_mode adjusted_mode; |
| |
| struct drm_display_mode mode; |
| |
| /* blob property to expose current mode to atomic userspace */ |
| struct drm_property_blob *mode_blob; |
| |
| /* blob property to expose color management to userspace */ |
| struct drm_property_blob *degamma_lut; |
| struct drm_property_blob *ctm; |
| struct drm_property_blob *gamma_lut; |
| |
| /** |
| * @event: |
| * |
| * Optional pointer to a DRM event to signal upon completion of the |
| * state update. The driver must send out the event when the atomic |
| * commit operation completes. There are two cases: |
| * |
| * - The event is for a CRTC which is being disabled through this |
| * atomic commit. In that case the event can be send out any time |
| * after the hardware has stopped scanning out the current |
| * framebuffers. It should contain the timestamp and counter for the |
| * last vblank before the display pipeline was shut off. |
| * |
| * - For a CRTC which is enabled at the end of the commit (even when it |
| * undergoes an full modeset) the vblank timestamp and counter must |
| * be for the vblank right before the first frame that scans out the |
| * new set of buffers. Again the event can only be sent out after the |
| * hardware has stopped scanning out the old buffers. |
| * |
| * - Events for disabled CRTCs are not allowed, and drivers can ignore |
| * that case. |
| * |
| * This can be handled by the drm_crtc_send_vblank_event() function, |
| * which the driver should call on the provided event upon completion of |
| * the atomic commit. Note that if the driver supports vblank signalling |
| * and timestamping the vblank counters and timestamps must agree with |
| * the ones returned from page flip events. With the current vblank |
| * helper infrastructure this can be achieved by holding a vblank |
| * reference while the page flip is pending, acquired through |
| * drm_crtc_vblank_get() and released with drm_crtc_vblank_put(). |
| * Drivers are free to implement their own vblank counter and timestamp |
| * tracking though, e.g. if they have accurate timestamp registers in |
| * hardware. |
| * |
| * For hardware which supports some means to synchronize vblank |
| * interrupt delivery with committing display state there's also |
| * drm_crtc_arm_vblank_event(). See the documentation of that function |
| * for a detailed discussion of the constraints it needs to be used |
| * safely. |
| */ |
| struct drm_pending_vblank_event *event; |
| |
| struct drm_atomic_state *state; |
| }; |
| |
| /** |
| * struct drm_crtc_funcs - control CRTCs for a given device |
| * |
| * The drm_crtc_funcs structure is the central CRTC management structure |
| * in the DRM. Each CRTC controls one or more connectors (note that the name |
| * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc. |
| * connectors, not just CRTs). |
| * |
| * Each driver is responsible for filling out this structure at startup time, |
| * in addition to providing other modesetting features, like i2c and DDC |
| * bus accessors. |
| */ |
| struct drm_crtc_funcs { |
| /** |
| * @reset: |
| * |
| * Reset CRTC hardware and software state to off. This function isn't |
| * called by the core directly, only through drm_mode_config_reset(). |
| * It's not a helper hook only for historical reasons. |
| * |
| * Atomic drivers can use drm_atomic_helper_crtc_reset() to reset |
| * atomic state using this hook. |
| */ |
| void (*reset)(struct drm_crtc *crtc); |
| |
| /** |
| * @cursor_set: |
| * |
| * Update the cursor image. The cursor position is relative to the CRTC |
| * and can be partially or fully outside of the visible area. |
| * |
| * Note that contrary to all other KMS functions the legacy cursor entry |
| * points don't take a framebuffer object, but instead take directly a |
| * raw buffer object id from the driver's buffer manager (which is |
| * either GEM or TTM for current drivers). |
| * |
| * This entry point is deprecated, drivers should instead implement |
| * universal plane support and register a proper cursor plane using |
| * drm_crtc_init_with_planes(). |
| * |
| * This callback is optional |
| * |
| * RETURNS: |
| * |
| * 0 on success or a negative error code on failure. |
| */ |
| int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv, |
| uint32_t handle, uint32_t width, uint32_t height); |
| |
| /** |
| * @cursor_set2: |
| * |
| * Update the cursor image, including hotspot information. The hotspot |
| * must not affect the cursor position in CRTC coordinates, but is only |
| * meant as a hint for virtualized display hardware to coordinate the |
| * guests and hosts cursor position. The cursor hotspot is relative to |
| * the cursor image. Otherwise this works exactly like @cursor_set. |
| * |
| * This entry point is deprecated, drivers should instead implement |
| * universal plane support and register a proper cursor plane using |
| * drm_crtc_init_with_planes(). |
| * |
| * This callback is optional. |
| * |
| * RETURNS: |
| * |
| * 0 on success or a negative error code on failure. |
| */ |
| int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv, |
| uint32_t handle, uint32_t width, uint32_t height, |
| int32_t hot_x, int32_t hot_y); |
| |
| /** |
| * @cursor_move: |
| * |
| * Update the cursor position. The cursor does not need to be visible |
| * when this hook is called. |
| * |
| * This entry point is deprecated, drivers should instead implement |
| * universal plane support and register a proper cursor plane using |
| * drm_crtc_init_with_planes(). |
| * |
| * This callback is optional. |
| * |
| * RETURNS: |
| * |
| * 0 on success or a negative error code on failure. |
| */ |
| int (*cursor_move)(struct drm_crtc *crtc, int x, int y); |
| |
| /** |
| * @gamma_set: |
| * |
| * Set gamma on the CRTC. |
| * |
| * This callback is optional. |
| * |
| * NOTE: |
| * |
| * Drivers that support gamma tables and also fbdev emulation through |
| * the provided helper library need to take care to fill out the gamma |
| * hooks for both. Currently there's a bit an unfortunate duplication |
| * going on, which should eventually be unified to just one set of |
| * hooks. |
| */ |
| int (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, |
| uint32_t size); |
| |
| /** |
| * @destroy: |
| * |
| * Clean up plane resources. This is only called at driver unload time |
| * through drm_mode_config_cleanup() since a CRTC cannot be hotplugged |
| * in DRM. |
| */ |
| void (*destroy)(struct drm_crtc *crtc); |
| |
| /** |
| * @set_config: |
| * |
| * This is the main legacy entry point to change the modeset state on a |
| * CRTC. All the details of the desired configuration are passed in a |
| * struct &drm_mode_set - see there for details. |
| * |
| * Drivers implementing atomic modeset should use |
| * drm_atomic_helper_set_config() to implement this hook. |
| * |
| * RETURNS: |
| * |
| * 0 on success or a negative error code on failure. |
| */ |
| int (*set_config)(struct drm_mode_set *set); |
| |
| /** |
| * @page_flip: |
| * |
| * Legacy entry point to schedule a flip to the given framebuffer. |
| * |
| * Page flipping is a synchronization mechanism that replaces the frame |
| * buffer being scanned out by the CRTC with a new frame buffer during |
| * vertical blanking, avoiding tearing (except when requested otherwise |
| * through the DRM_MODE_PAGE_FLIP_ASYNC flag). When an application |
| * requests a page flip the DRM core verifies that the new frame buffer |
| * is large enough to be scanned out by the CRTC in the currently |
| * configured mode and then calls the CRTC ->page_flip() operation with a |
| * pointer to the new frame buffer. |
| * |
| * The driver must wait for any pending rendering to the new framebuffer |
| * to complete before executing the flip. It should also wait for any |
| * pending rendering from other drivers if the underlying buffer is a |
| * shared dma-buf. |
| * |
| * An application can request to be notified when the page flip has |
| * completed. The drm core will supply a struct &drm_event in the event |
| * parameter in this case. This can be handled by the |
| * drm_crtc_send_vblank_event() function, which the driver should call on |
| * the provided event upon completion of the flip. Note that if |
| * the driver supports vblank signalling and timestamping the vblank |
| * counters and timestamps must agree with the ones returned from page |
| * flip events. With the current vblank helper infrastructure this can |
| * be achieved by holding a vblank reference while the page flip is |
| * pending, acquired through drm_crtc_vblank_get() and released with |
| * drm_crtc_vblank_put(). Drivers are free to implement their own vblank |
| * counter and timestamp tracking though, e.g. if they have accurate |
| * timestamp registers in hardware. |
| * |
| * This callback is optional. |
| * |
| * NOTE: |
| * |
| * Very early versions of the KMS ABI mandated that the driver must |
| * block (but not reject) any rendering to the old framebuffer until the |
| * flip operation has completed and the old framebuffer is no longer |
| * visible. This requirement has been lifted, and userspace is instead |
| * expected to request delivery of an event and wait with recycling old |
| * buffers until such has been received. |
| * |
| * RETURNS: |
| * |
| * 0 on success or a negative error code on failure. Note that if a |
| * ->page_flip() operation is already pending the callback should return |
| * -EBUSY. Pageflips on a disabled CRTC (either by setting a NULL mode |
| * or just runtime disabled through DPMS respectively the new atomic |
| * "ACTIVE" state) should result in an -EINVAL error code. Note that |
| * drm_atomic_helper_page_flip() checks this already for atomic drivers. |
| */ |
| int (*page_flip)(struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| struct drm_pending_vblank_event *event, |
| uint32_t flags); |
| |
| /** |
| * @page_flip_target: |
| * |
| * Same as @page_flip but with an additional parameter specifying the |
| * absolute target vertical blank period (as reported by |
| * drm_crtc_vblank_count()) when the flip should take effect. |
| * |
| * Note that the core code calls drm_crtc_vblank_get before this entry |
| * point, and will call drm_crtc_vblank_put if this entry point returns |
| * any non-0 error code. It's the driver's responsibility to call |
| * drm_crtc_vblank_put after this entry point returns 0, typically when |
| * the flip completes. |
| */ |
| int (*page_flip_target)(struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| struct drm_pending_vblank_event *event, |
| uint32_t flags, uint32_t target); |
| |
| /** |
| * @set_property: |
| * |
| * This is the legacy entry point to update a property attached to the |
| * CRTC. |
| * |
| * Drivers implementing atomic modeset should use |
| * drm_atomic_helper_crtc_set_property() to implement this hook. |
| * |
| * This callback is optional if the driver does not support any legacy |
| * driver-private properties. |
| * |
| * RETURNS: |
| * |
| * 0 on success or a negative error code on failure. |
| */ |
| int (*set_property)(struct drm_crtc *crtc, |
| struct drm_property *property, uint64_t val); |
| |
| /** |
| * @atomic_duplicate_state: |
| * |
| * Duplicate the current atomic state for this CRTC and return it. |
| * The core and helpers gurantee that any atomic state duplicated with |
| * this hook and still owned by the caller (i.e. not transferred to the |
| * driver by calling ->atomic_commit() from struct |
| * &drm_mode_config_funcs) will be cleaned up by calling the |
| * @atomic_destroy_state hook in this structure. |
| * |
| * Atomic drivers which don't subclass struct &drm_crtc should use |
| * drm_atomic_helper_crtc_duplicate_state(). Drivers that subclass the |
| * state structure to extend it with driver-private state should use |
| * __drm_atomic_helper_crtc_duplicate_state() to make sure shared state is |
| * duplicated in a consistent fashion across drivers. |
| * |
| * It is an error to call this hook before crtc->state has been |
| * initialized correctly. |
| * |
| * NOTE: |
| * |
| * If the duplicate state references refcounted resources this hook must |
| * acquire a reference for each of them. The driver must release these |
| * references again in @atomic_destroy_state. |
| * |
| * RETURNS: |
| * |
| * Duplicated atomic state or NULL when the allocation failed. |
| */ |
| struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc); |
| |
| /** |
| * @atomic_destroy_state: |
| * |
| * Destroy a state duplicated with @atomic_duplicate_state and release |
| * or unreference all resources it references |
| */ |
| void (*atomic_destroy_state)(struct drm_crtc *crtc, |
| struct drm_crtc_state *state); |
| |
| /** |
| * @atomic_set_property: |
| * |
| * Decode a driver-private property value and store the decoded value |
| * into the passed-in state structure. Since the atomic core decodes all |
| * standardized properties (even for extensions beyond the core set of |
| * properties which might not be implemented by all drivers) this |
| * requires drivers to subclass the state structure. |
| * |
| * Such driver-private properties should really only be implemented for |
| * truly hardware/vendor specific state. Instead it is preferred to |
| * standardize atomic extension and decode the properties used to expose |
| * such an extension in the core. |
| * |
| * Do not call this function directly, use |
| * drm_atomic_crtc_set_property() instead. |
| * |
| * This callback is optional if the driver does not support any |
| * driver-private atomic properties. |
| * |
| * NOTE: |
| * |
| * This function is called in the state assembly phase of atomic |
| * modesets, which can be aborted for any reason (including on |
| * userspace's request to just check whether a configuration would be |
| * possible). Drivers MUST NOT touch any persistent state (hardware or |
| * software) or data structures except the passed in @state parameter. |
| * |
| * Also since userspace controls in which order properties are set this |
| * function must not do any input validation (since the state update is |
| * incomplete and hence likely inconsistent). Instead any such input |
| * validation must be done in the various atomic_check callbacks. |
| * |
| * RETURNS: |
| * |
| * 0 if the property has been found, -EINVAL if the property isn't |
| * implemented by the driver (which should never happen, the core only |
| * asks for properties attached to this CRTC). No other validation is |
| * allowed by the driver. The core already checks that the property |
| * value is within the range (integer, valid enum value, ...) the driver |
| * set when registering the property. |
| */ |
| int (*atomic_set_property)(struct drm_crtc *crtc, |
| struct drm_crtc_state *state, |
| struct drm_property *property, |
| uint64_t val); |
| /** |
| * @atomic_get_property: |
| * |
| * Reads out the decoded driver-private property. This is used to |
| * implement the GETCRTC IOCTL. |
| * |
| * Do not call this function directly, use |
| * drm_atomic_crtc_get_property() instead. |
| * |
| * This callback is optional if the driver does not support any |
| * driver-private atomic properties. |
| * |
| * RETURNS: |
| * |
| * 0 on success, -EINVAL if the property isn't implemented by the |
| * driver (which should never happen, the core only asks for |
| * properties attached to this CRTC). |
| */ |
| int (*atomic_get_property)(struct drm_crtc *crtc, |
| const struct drm_crtc_state *state, |
| struct drm_property *property, |
| uint64_t *val); |
| |
| /** |
| * @late_register: |
| * |
| * This optional hook can be used to register additional userspace |
| * interfaces attached to the crtc like debugfs interfaces. |
| * It is called late in the driver load sequence from drm_dev_register(). |
| * Everything added from this callback should be unregistered in |
| * the early_unregister callback. |
| * |
| * Returns: |
| * |
| * 0 on success, or a negative error code on failure. |
| */ |
| int (*late_register)(struct drm_crtc *crtc); |
| |
| /** |
| * @early_unregister: |
| * |
| * This optional hook should be used to unregister the additional |
| * userspace interfaces attached to the crtc from |
| * late_unregister(). It is called from drm_dev_unregister(), |
| * early in the driver unload sequence to disable userspace access |
| * before data structures are torndown. |
| */ |
| void (*early_unregister)(struct drm_crtc *crtc); |
| }; |
| |
| /** |
| * struct drm_crtc - central CRTC control structure |
| * @dev: parent DRM device |
| * @port: OF node used by drm_of_find_possible_crtcs() |
| * @head: list management |
| * @name: human readable name, can be overwritten by the driver |
| * @mutex: per-CRTC locking |
| * @base: base KMS object for ID tracking etc. |
| * @primary: primary plane for this CRTC |
| * @cursor: cursor plane for this CRTC |
| * @cursor_x: current x position of the cursor, used for universal cursor planes |
| * @cursor_y: current y position of the cursor, used for universal cursor planes |
| * @enabled: is this CRTC enabled? |
| * @mode: current mode timings |
| * @hwmode: mode timings as programmed to hw regs |
| * @x: x position on screen |
| * @y: y position on screen |
| * @funcs: CRTC control functions |
| * @gamma_size: size of gamma ramp |
| * @gamma_store: gamma ramp values |
| * @helper_private: mid-layer private data |
| * @properties: property tracking for this CRTC |
| * |
| * Each CRTC may have one or more connectors associated with it. This structure |
| * allows the CRTC to be controlled. |
| */ |
| struct drm_crtc { |
| struct drm_device *dev; |
| struct device_node *port; |
| struct list_head head; |
| |
| char *name; |
| |
| /** |
| * @mutex: |
| * |
| * This provides a read lock for the overall crtc state (mode, dpms |
| * state, ...) and a write lock for everything which can be update |
| * without a full modeset (fb, cursor data, crtc properties ...). Full |
| * modeset also need to grab dev->mode_config.connection_mutex. |
| */ |
| struct drm_modeset_lock mutex; |
| |
| struct drm_mode_object base; |
| |
| /* primary and cursor planes for CRTC */ |
| struct drm_plane *primary; |
| struct drm_plane *cursor; |
| |
| /** |
| * @index: Position inside the mode_config.list, can be used as an array |
| * index. It is invariant over the lifetime of the CRTC. |
| */ |
| unsigned index; |
| |
| /* position of cursor plane on crtc */ |
| int cursor_x; |
| int cursor_y; |
| |
| bool enabled; |
| |
| /* Requested mode from modesetting. */ |
| struct drm_display_mode mode; |
| |
| /* Programmed mode in hw, after adjustments for encoders, |
| * crtc, panel scaling etc. Needed for timestamping etc. |
| */ |
| struct drm_display_mode hwmode; |
| |
| int x, y; |
| const struct drm_crtc_funcs *funcs; |
| |
| /* Legacy FB CRTC gamma size for reporting to userspace */ |
| uint32_t gamma_size; |
| uint16_t *gamma_store; |
| |
| /* if you are using the helper */ |
| const struct drm_crtc_helper_funcs *helper_private; |
| |
| struct drm_object_properties properties; |
| |
| /** |
| * @state: |
| * |
| * Current atomic state for this CRTC. |
| */ |
| struct drm_crtc_state *state; |
| |
| /** |
| * @commit_list: |
| * |
| * List of &drm_crtc_commit structures tracking pending commits. |
| * Protected by @commit_lock. This list doesn't hold its own full |
| * reference, but burrows it from the ongoing commit. Commit entries |
| * must be removed from this list once the commit is fully completed, |
| * but before it's correspoding &drm_atomic_state gets destroyed. |
| */ |
| struct list_head commit_list; |
| |
| /** |
| * @commit_lock: |
| * |
| * Spinlock to protect @commit_list. |
| */ |
| spinlock_t commit_lock; |
| |
| /** |
| * @acquire_ctx: |
| * |
| * Per-CRTC implicit acquire context used by atomic drivers for legacy |
| * IOCTLs, so that atomic drivers can get at the locking acquire |
| * context. |
| */ |
| struct drm_modeset_acquire_ctx *acquire_ctx; |
| |
| /** |
| * @fence_context: |
| * |
| * timeline context used for fence operations. |
| */ |
| unsigned int fence_context; |
| |
| /** |
| * @fence_lock: |
| * |
| * spinlock to protect the fences in the fence_context. |
| */ |
| |
| spinlock_t fence_lock; |
| /** |
| * @fence_seqno: |
| * |
| * Seqno variable used as monotonic counter for the fences |
| * created on the CRTC's timeline. |
| */ |
| unsigned long fence_seqno; |
| |
| /** |
| * @timeline_name: |
| * |
| * The name of the CRTC's fence timeline. |
| */ |
| char timeline_name[32]; |
| }; |
| |
| /** |
| * struct drm_mode_set - new values for a CRTC config change |
| * @fb: framebuffer to use for new config |
| * @crtc: CRTC whose configuration we're about to change |
| * @mode: mode timings to use |
| * @x: position of this CRTC relative to @fb |
| * @y: position of this CRTC relative to @fb |
| * @connectors: array of connectors to drive with this CRTC if possible |
| * @num_connectors: size of @connectors array |
| * |
| * Represents a single crtc the connectors that it drives with what mode |
| * and from which framebuffer it scans out from. |
| * |
| * This is used to set modes. |
| */ |
| struct drm_mode_set { |
| struct drm_framebuffer *fb; |
| struct drm_crtc *crtc; |
| struct drm_display_mode *mode; |
| |
| uint32_t x; |
| uint32_t y; |
| |
| struct drm_connector **connectors; |
| size_t num_connectors; |
| }; |
| |
| /** |
| * struct drm_mode_config_funcs - basic driver provided mode setting functions |
| * |
| * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that |
| * involve drivers. |
| */ |
| struct drm_mode_config_funcs { |
| /** |
| * @fb_create: |
| * |
| * Create a new framebuffer object. The core does basic checks on the |
| * requested metadata, but most of that is left to the driver. See |
| * struct &drm_mode_fb_cmd2 for details. |
| * |
| * If the parameters are deemed valid and the backing storage objects in |
| * the underlying memory manager all exist, then the driver allocates |
| * a new &drm_framebuffer structure, subclassed to contain |
| * driver-specific information (like the internal native buffer object |
| * references). It also needs to fill out all relevant metadata, which |
| * should be done by calling drm_helper_mode_fill_fb_struct(). |
| * |
| * The initialization is finalized by calling drm_framebuffer_init(), |
| * which registers the framebuffer and makes it accessible to other |
| * threads. |
| * |
| * RETURNS: |
| * |
| * A new framebuffer with an initial reference count of 1 or a negative |
| * error code encoded with ERR_PTR(). |
| */ |
| struct drm_framebuffer *(*fb_create)(struct drm_device *dev, |
| struct drm_file *file_priv, |
| const struct drm_mode_fb_cmd2 *mode_cmd); |
| |
| /** |
| * @output_poll_changed: |
| * |
| * Callback used by helpers to inform the driver of output configuration |
| * changes. |
| * |
| * Drivers implementing fbdev emulation with the helpers can call |
| * drm_fb_helper_hotplug_changed from this hook to inform the fbdev |
| * helper of output changes. |
| * |
| * FIXME: |
| * |
| * Except that there's no vtable for device-level helper callbacks |
| * there's no reason this is a core function. |
| */ |
| void (*output_poll_changed)(struct drm_device *dev); |
| |
| /** |
| * @atomic_check: |
| * |
| * This is the only hook to validate an atomic modeset update. This |
| * function must reject any modeset and state changes which the hardware |
| * or driver doesn't support. This includes but is of course not limited |
| * to: |
| * |
| * - Checking that the modes, framebuffers, scaling and placement |
| * requirements and so on are within the limits of the hardware. |
| * |
| * - Checking that any hidden shared resources are not oversubscribed. |
| * This can be shared PLLs, shared lanes, overall memory bandwidth, |
| * display fifo space (where shared between planes or maybe even |
| * CRTCs). |
| * |
| * - Checking that virtualized resources exported to userspace are not |
| * oversubscribed. For various reasons it can make sense to expose |
| * more planes, crtcs or encoders than which are physically there. One |
| * example is dual-pipe operations (which generally should be hidden |
| * from userspace if when lockstepped in hardware, exposed otherwise), |
| * where a plane might need 1 hardware plane (if it's just on one |
| * pipe), 2 hardware planes (when it spans both pipes) or maybe even |
| * shared a hardware plane with a 2nd plane (if there's a compatible |
| * plane requested on the area handled by the other pipe). |
| * |
| * - Check that any transitional state is possible and that if |
| * requested, the update can indeed be done in the vblank period |
| * without temporarily disabling some functions. |
| * |
| * - Check any other constraints the driver or hardware might have. |
| * |
| * - This callback also needs to correctly fill out the &drm_crtc_state |
| * in this update to make sure that drm_atomic_crtc_needs_modeset() |
| * reflects the nature of the possible update and returns true if and |
| * only if the update cannot be applied without tearing within one |
| * vblank on that CRTC. The core uses that information to reject |
| * updates which require a full modeset (i.e. blanking the screen, or |
| * at least pausing updates for a substantial amount of time) if |
| * userspace has disallowed that in its request. |
| * |
| * - The driver also does not need to repeat basic input validation |
| * like done for the corresponding legacy entry points. The core does |
| * that before calling this hook. |
| * |
| * See the documentation of @atomic_commit for an exhaustive list of |
| * error conditions which don't have to be checked at the |
| * ->atomic_check() stage? |
| * |
| * See the documentation for struct &drm_atomic_state for how exactly |
| * an atomic modeset update is described. |
| * |
| * Drivers using the atomic helpers can implement this hook using |
| * drm_atomic_helper_check(), or one of the exported sub-functions of |
| * it. |
| * |
| * RETURNS: |
| * |
| * 0 on success or one of the below negative error codes: |
| * |
| * - -EINVAL, if any of the above constraints are violated. |
| * |
| * - -EDEADLK, when returned from an attempt to acquire an additional |
| * &drm_modeset_lock through drm_modeset_lock(). |
| * |
| * - -ENOMEM, if allocating additional state sub-structures failed due |
| * to lack of memory. |
| * |
| * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. |
| * This can either be due to a pending signal, or because the driver |
| * needs to completely bail out to recover from an exceptional |
| * situation like a GPU hang. From a userspace point all errors are |
| * treated equally. |
| */ |
| int (*atomic_check)(struct drm_device *dev, |
| struct drm_atomic_state *state); |
| |
| /** |
| * @atomic_commit: |
| * |
| * This is the only hook to commit an atomic modeset update. The core |
| * guarantees that @atomic_check has been called successfully before |
| * calling this function, and that nothing has been changed in the |
| * interim. |
| * |
| * See the documentation for struct &drm_atomic_state for how exactly |
| * an atomic modeset update is described. |
| * |
| * Drivers using the atomic helpers can implement this hook using |
| * drm_atomic_helper_commit(), or one of the exported sub-functions of |
| * it. |
| * |
| * Nonblocking commits (as indicated with the nonblock parameter) must |
| * do any preparatory work which might result in an unsuccessful commit |
| * in the context of this callback. The only exceptions are hardware |
| * errors resulting in -EIO. But even in that case the driver must |
| * ensure that the display pipe is at least running, to avoid |
| * compositors crashing when pageflips don't work. Anything else, |
| * specifically committing the update to the hardware, should be done |
| * without blocking the caller. For updates which do not require a |
| * modeset this must be guaranteed. |
| * |
| * The driver must wait for any pending rendering to the new |
| * framebuffers to complete before executing the flip. It should also |
| * wait for any pending rendering from other drivers if the underlying |
| * buffer is a shared dma-buf. Nonblocking commits must not wait for |
| * rendering in the context of this callback. |
| * |
| * An application can request to be notified when the atomic commit has |
| * completed. These events are per-CRTC and can be distinguished by the |
| * CRTC index supplied in &drm_event to userspace. |
| * |
| * The drm core will supply a struct &drm_event in the event |
| * member of each CRTC's &drm_crtc_state structure. See the |
| * documentation for &drm_crtc_state for more details about the precise |
| * semantics of this event. |
| * |
| * NOTE: |
| * |
| * Drivers are not allowed to shut down any display pipe successfully |
| * enabled through an atomic commit on their own. Doing so can result in |
| * compositors crashing if a page flip is suddenly rejected because the |
| * pipe is off. |
| * |
| * RETURNS: |
| * |
| * 0 on success or one of the below negative error codes: |
| * |
| * - -EBUSY, if a nonblocking updated is requested and there is |
| * an earlier updated pending. Drivers are allowed to support a queue |
| * of outstanding updates, but currently no driver supports that. |
| * Note that drivers must wait for preceding updates to complete if a |
| * synchronous update is requested, they are not allowed to fail the |
| * commit in that case. |
| * |
| * - -ENOMEM, if the driver failed to allocate memory. Specifically |
| * this can happen when trying to pin framebuffers, which must only |
| * be done when committing the state. |
| * |
| * - -ENOSPC, as a refinement of the more generic -ENOMEM to indicate |
| * that the driver has run out of vram, iommu space or similar GPU |
| * address space needed for framebuffer. |
| * |
| * - -EIO, if the hardware completely died. |
| * |
| * - -EINTR, -EAGAIN or -ERESTARTSYS, if the IOCTL should be restarted. |
| * This can either be due to a pending signal, or because the driver |
| * needs to completely bail out to recover from an exceptional |
| * situation like a GPU hang. From a userspace point of view all errors are |
| * treated equally. |
| * |
| * This list is exhaustive. Specifically this hook is not allowed to |
| * return -EINVAL (any invalid requests should be caught in |
| * @atomic_check) or -EDEADLK (this function must not acquire |
| * additional modeset locks). |
| */ |
| int (*atomic_commit)(struct drm_device *dev, |
| struct drm_atomic_state *state, |
| bool nonblock); |
| |
| /** |
| * @atomic_state_alloc: |
| * |
| * This optional hook can be used by drivers that want to subclass struct |
| * &drm_atomic_state to be able to track their own driver-private global |
| * state easily. If this hook is implemented, drivers must also |
| * implement @atomic_state_clear and @atomic_state_free. |
| * |
| * RETURNS: |
| * |
| * A new &drm_atomic_state on success or NULL on failure. |
| */ |
| struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev); |
| |
| /** |
| * @atomic_state_clear: |
| * |
| * This hook must clear any driver private state duplicated into the |
| * passed-in &drm_atomic_state. This hook is called when the caller |
| * encountered a &drm_modeset_lock deadlock and needs to drop all |
| * already acquired locks as part of the deadlock avoidance dance |
| * implemented in drm_modeset_lock_backoff(). |
| * |
| * Any duplicated state must be invalidated since a concurrent atomic |
| * update might change it, and the drm atomic interfaces always apply |
| * updates as relative changes to the current state. |
| * |
| * Drivers that implement this must call drm_atomic_state_default_clear() |
| * to clear common state. |
| */ |
| void (*atomic_state_clear)(struct drm_atomic_state *state); |
| |
| /** |
| * @atomic_state_free: |
| * |
| * This hook needs driver private resources and the &drm_atomic_state |
| * itself. Note that the core first calls drm_atomic_state_clear() to |
| * avoid code duplicate between the clear and free hooks. |
| * |
| * Drivers that implement this must call drm_atomic_state_default_free() |
| * to release common resources. |
| */ |
| void (*atomic_state_free)(struct drm_atomic_state *state); |
| }; |
| |
| /** |
| * struct drm_mode_config - Mode configuration control structure |
| * @mutex: mutex protecting KMS related lists and structures |
| * @connection_mutex: ww mutex protecting connector state and routing |
| * @acquire_ctx: global implicit acquire context used by atomic drivers for |
| * legacy IOCTLs |
| * @fb_lock: mutex to protect fb state and lists |
| * @num_fb: number of fbs available |
| * @fb_list: list of framebuffers available |
| * @num_encoder: number of encoders on this device |
| * @encoder_list: list of encoder objects |
| * @num_overlay_plane: number of overlay planes on this device |
| * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device |
| * @plane_list: list of plane objects |
| * @num_crtc: number of CRTCs on this device |
| * @crtc_list: list of CRTC objects |
| * @property_list: list of property objects |
| * @min_width: minimum pixel width on this device |
| * @min_height: minimum pixel height on this device |
| * @max_width: maximum pixel width on this device |
| * @max_height: maximum pixel height on this device |
| * @funcs: core driver provided mode setting functions |
| * @fb_base: base address of the framebuffer |
| * @poll_enabled: track polling support for this device |
| * @poll_running: track polling status for this device |
| * @delayed_event: track delayed poll uevent deliver for this device |
| * @output_poll_work: delayed work for polling in process context |
| * @property_blob_list: list of all the blob property objects |
| * @blob_lock: mutex for blob property allocation and management |
| * @*_property: core property tracking |
| * @preferred_depth: preferred RBG pixel depth, used by fb helpers |
| * @prefer_shadow: hint to userspace to prefer shadow-fb rendering |
| * @cursor_width: hint to userspace for max cursor width |
| * @cursor_height: hint to userspace for max cursor height |
| * @helper_private: mid-layer private data |
| * |
| * Core mode resource tracking structure. All CRTC, encoders, and connectors |
| * enumerated by the driver are added here, as are global properties. Some |
| * global restrictions are also here, e.g. dimension restrictions. |
| */ |
| struct drm_mode_config { |
| struct mutex mutex; /* protects configuration (mode lists etc.) */ |
| struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */ |
| struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */ |
| |
| /** |
| * @idr_mutex: |
| * |
| * Mutex for KMS ID allocation and management. Protects both @crtc_idr |
| * and @tile_idr. |
| */ |
| struct mutex idr_mutex; |
| |
| /** |
| * @crtc_idr: |
| * |
| * Main KMS ID tracking object. Use this idr for all IDs, fb, crtc, |
| * connector, modes - just makes life easier to have only one. |
| */ |
| struct idr crtc_idr; |
| |
| /** |
| * @tile_idr: |
| * |
| * Use this idr for allocating new IDs for tiled sinks like use in some |
| * high-res DP MST screens. |
| */ |
| struct idr tile_idr; |
| |
| struct mutex fb_lock; /* proctects global and per-file fb lists */ |
| int num_fb; |
| struct list_head fb_list; |
| |
| /** |
| * @num_connector: Number of connectors on this device. |
| */ |
| int num_connector; |
| /** |
| * @connector_ida: ID allocator for connector indices. |
| */ |
| struct ida connector_ida; |
| /** |
| * @connector_list: List of connector objects. |
| */ |
| struct list_head connector_list; |
| int num_encoder; |
| struct list_head encoder_list; |
| |
| /* |
| * Track # of overlay planes separately from # of total planes. By |
| * default we only advertise overlay planes to userspace; if userspace |
| * sets the "universal plane" capability bit, we'll go ahead and |
| * expose all planes. |
| */ |
| int num_overlay_plane; |
| int num_total_plane; |
| struct list_head plane_list; |
| |
| int num_crtc; |
| struct list_head crtc_list; |
| |
| struct list_head property_list; |
| |
| int min_width, min_height; |
| int max_width, max_height; |
| const struct drm_mode_config_funcs *funcs; |
| resource_size_t fb_base; |
| |
| /* output poll support */ |
| bool poll_enabled; |
| bool poll_running; |
| bool delayed_event; |
| struct delayed_work output_poll_work; |
| |
| struct mutex blob_lock; |
| |
| /* pointers to standard properties */ |
| struct list_head property_blob_list; |
| /** |
| * @edid_property: Default connector property to hold the EDID of the |
| * currently connected sink, if any. |
| */ |
| struct drm_property *edid_property; |
| /** |
| * @dpms_property: Default connector property to control the |
| * connector's DPMS state. |
| */ |
| struct drm_property *dpms_property; |
| /** |
| * @path_property: Default connector property to hold the DP MST path |
| * for the port. |
| */ |
| struct drm_property *path_property; |
| /** |
| * @tile_property: Default connector property to store the tile |
| * position of a tiled screen, for sinks which need to be driven with |
| * multiple CRTCs. |
| */ |
| struct drm_property *tile_property; |
| /** |
| * @plane_type_property: Default plane property to differentiate |
| * CURSOR, PRIMARY and OVERLAY legacy uses of planes. |
| */ |
| struct drm_property *plane_type_property; |
| /** |
| * @rotation_property: Optional property for planes or CRTCs to specifiy |
| * rotation. |
| */ |
| struct drm_property *rotation_property; |
| /** |
| * @prop_src_x: Default atomic plane property for the plane source |
| * position in the connected &drm_framebuffer. |
| */ |
| struct drm_property *prop_src_x; |
| /** |
| * @prop_src_y: Default atomic plane property for the plane source |
| * position in the connected &drm_framebuffer. |
| */ |
| struct drm_property *prop_src_y; |
| /** |
| * @prop_src_w: Default atomic plane property for the plane source |
| * position in the connected &drm_framebuffer. |
| */ |
| struct drm_property *prop_src_w; |
| /** |
| * @prop_src_h: Default atomic plane property for the plane source |
| * position in the connected &drm_framebuffer. |
| */ |
| struct drm_property *prop_src_h; |
| /** |
| * @prop_crtc_x: Default atomic plane property for the plane destination |
| * position in the &drm_crtc is is being shown on. |
| */ |
| struct drm_property *prop_crtc_x; |
| /** |
| * @prop_crtc_y: Default atomic plane property for the plane destination |
| * position in the &drm_crtc is is being shown on. |
| */ |
| struct drm_property *prop_crtc_y; |
| /** |
| * @prop_crtc_w: Default atomic plane property for the plane destination |
| * position in the &drm_crtc is is being shown on. |
| */ |
| struct drm_property *prop_crtc_w; |
| /** |
| * @prop_crtc_h: Default atomic plane property for the plane destination |
| * position in the &drm_crtc is is being shown on. |
| */ |
| struct drm_property *prop_crtc_h; |
| /** |
| * @prop_fb_id: Default atomic plane property to specify the |
| * &drm_framebuffer. |
| */ |
| struct drm_property *prop_fb_id; |
| /** |
| * @prop_in_fence_fd: Sync File fd representing the incoming fences |
| * for a Plane. |
| */ |
| struct drm_property *prop_in_fence_fd; |
| /** |
| * @prop_out_fence_ptr: Sync File fd pointer representing the |
| * outgoing fences for a CRTC. Userspace should provide a pointer to a |
| * value of type s32, and then cast that pointer to u64. |
| */ |
| struct drm_property *prop_out_fence_ptr; |
| /** |
| * @prop_crtc_id: Default atomic plane property to specify the |
| * &drm_crtc. |
| */ |
| struct drm_property *prop_crtc_id; |
| /** |
| * @prop_active: Default atomic CRTC property to control the active |
| * state, which is the simplified implementation for DPMS in atomic |
| * drivers. |
| */ |
| struct drm_property *prop_active; |
| /** |
| * @prop_mode_id: Default atomic CRTC property to set the mode for a |
| * CRTC. A 0 mode implies that the CRTC is entirely disabled - all |
| * connectors must be of and active must be set to disabled, too. |
| */ |
| struct drm_property *prop_mode_id; |
| |
| /** |
| * @dvi_i_subconnector_property: Optional DVI-I property to |
| * differentiate between analog or digital mode. |
| */ |
| struct drm_property *dvi_i_subconnector_property; |
| /** |
| * @dvi_i_select_subconnector_property: Optional DVI-I property to |
| * select between analog or digital mode. |
| */ |
| struct drm_property *dvi_i_select_subconnector_property; |
| |
| /** |
| * @tv_subconnector_property: Optional TV property to differentiate |
| * between different TV connector types. |
| */ |
| struct drm_property *tv_subconnector_property; |
| /** |
| * @tv_select_subconnector_property: Optional TV property to select |
| * between different TV connector types. |
| */ |
| struct drm_property *tv_select_subconnector_property; |
| /** |
| * @tv_mode_property: Optional TV property to select |
| * the output TV mode. |
| */ |
| struct drm_property *tv_mode_property; |
| /** |
| * @tv_left_margin_property: Optional TV property to set the left |
| * margin. |
| */ |
| struct drm_property *tv_left_margin_property; |
| /** |
| * @tv_right_margin_property: Optional TV property to set the right |
| * margin. |
| */ |
| struct drm_property *tv_right_margin_property; |
| /** |
| * @tv_top_margin_property: Optional TV property to set the right |
| * margin. |
| */ |
| struct drm_property *tv_top_margin_property; |
| /** |
| * @tv_bottom_margin_property: Optional TV property to set the right |
| * margin. |
| */ |
| struct drm_property *tv_bottom_margin_property; |
| /** |
| * @tv_brightness_property: Optional TV property to set the |
| * brightness. |
| */ |
| struct drm_property *tv_brightness_property; |
| /** |
| * @tv_contrast_property: Optional TV property to set the |
| * contrast. |
| */ |
| struct drm_property *tv_contrast_property; |
| /** |
| * @tv_flicker_reduction_property: Optional TV property to control the |
| * flicker reduction mode. |
| */ |
| struct drm_property *tv_flicker_reduction_property; |
| /** |
| * @tv_overscan_property: Optional TV property to control the overscan |
| * setting. |
| */ |
| struct drm_property *tv_overscan_property; |
| /** |
| * @tv_saturation_property: Optional TV property to set the |
| * saturation. |
| */ |
| struct drm_property *tv_saturation_property; |
| /** |
| * @tv_hue_property: Optional TV property to set the hue. |
| */ |
| struct drm_property *tv_hue_property; |
| |
| /** |
| * @scaling_mode_property: Optional connector property to control the |
| * upscaling, mostly used for built-in panels. |
| */ |
| struct drm_property *scaling_mode_property; |
| /** |
| * @aspect_ratio_property: Optional connector property to control the |
| * HDMI infoframe aspect ratio setting. |
| */ |
| struct drm_property *aspect_ratio_property; |
| /** |
| * @degamma_lut_property: Optional CRTC property to set the LUT used to |
| * convert the framebuffer's colors to linear gamma. |
| */ |
| struct drm_property *degamma_lut_property; |
| /** |
| * @degamma_lut_size_property: Optional CRTC property for the size of |
| * the degamma LUT as supported by the driver (read-only). |
| */ |
| struct drm_property *degamma_lut_size_property; |
| /** |
| * @ctm_property: Optional CRTC property to set the |
| * matrix used to convert colors after the lookup in the |
| * degamma LUT. |
| */ |
| struct drm_property *ctm_property; |
| /** |
| * @gamma_lut_property: Optional CRTC property to set the LUT used to |
| * convert the colors, after the CTM matrix, to the gamma space of the |
| * connected screen. |
| */ |
| struct drm_property *gamma_lut_property; |
| /** |
| * @gamma_lut_size_property: Optional CRTC property for the size of the |
| * gamma LUT as supported by the driver (read-only). |
| */ |
| struct drm_property *gamma_lut_size_property; |
| |
| /** |
| * @suggested_x_property: Optional connector property with a hint for |
| * the position of the output on the host's screen. |
| */ |
| struct drm_property *suggested_x_property; |
| /** |
| * @suggested_y_property: Optional connector property with a hint for |
| * the position of the output on the host's screen. |
| */ |
| struct drm_property *suggested_y_property; |
| |
| /* dumb ioctl parameters */ |
| uint32_t preferred_depth, prefer_shadow; |
| |
| /** |
| * @async_page_flip: Does this device support async flips on the primary |
| * plane? |
| */ |
| bool async_page_flip; |
| |
| /** |
| * @allow_fb_modifiers: |
| * |
| * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call. |
| */ |
| bool allow_fb_modifiers; |
| |
| /* cursor size */ |
| uint32_t cursor_width, cursor_height; |
| |
| struct drm_mode_config_helper_funcs *helper_private; |
| }; |
| |
| #define obj_to_crtc(x) container_of(x, struct drm_crtc, base) |
| |
| extern __printf(6, 7) |
| int drm_crtc_init_with_planes(struct drm_device *dev, |
| struct drm_crtc *crtc, |
| struct drm_plane *primary, |
| struct drm_plane *cursor, |
| const struct drm_crtc_funcs *funcs, |
| const char *name, ...); |
| extern void drm_crtc_cleanup(struct drm_crtc *crtc); |
| |
| /** |
| * drm_crtc_index - find the index of a registered CRTC |
| * @crtc: CRTC to find index for |
| * |
| * Given a registered CRTC, return the index of that CRTC within a DRM |
| * device's list of CRTCs. |
| */ |
| static inline unsigned int drm_crtc_index(const struct drm_crtc *crtc) |
| { |
| return crtc->index; |
| } |
| |
| /** |
| * drm_crtc_mask - find the mask of a registered CRTC |
| * @crtc: CRTC to find mask for |
| * |
| * Given a registered CRTC, return the mask bit of that CRTC for an |
| * encoder's possible_crtcs field. |
| */ |
| static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc) |
| { |
| return 1 << drm_crtc_index(crtc); |
| } |
| |
| extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, |
| int *hdisplay, int *vdisplay); |
| extern int drm_crtc_force_disable(struct drm_crtc *crtc); |
| extern int drm_crtc_force_disable_all(struct drm_device *dev); |
| |
| extern void drm_mode_config_init(struct drm_device *dev); |
| extern void drm_mode_config_reset(struct drm_device *dev); |
| extern void drm_mode_config_cleanup(struct drm_device *dev); |
| |
| extern int drm_mode_set_config_internal(struct drm_mode_set *set); |
| |
| extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, |
| char topology[8]); |
| extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, |
| char topology[8]); |
| extern void drm_mode_put_tile_group(struct drm_device *dev, |
| struct drm_tile_group *tg); |
| |
| /* Helpers */ |
| static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev, |
| uint32_t id) |
| { |
| struct drm_mode_object *mo; |
| mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC); |
| return mo ? obj_to_crtc(mo) : NULL; |
| } |
| |
| #define drm_for_each_crtc(crtc, dev) \ |
| list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head) |
| |
| static inline void |
| assert_drm_connector_list_read_locked(struct drm_mode_config *mode_config) |
| { |
| /* |
| * The connector hotadd/remove code currently grabs both locks when |
| * updating lists. Hence readers need only hold either of them to be |
| * safe and the check amounts to |
| * |
| * WARN_ON(not_holding(A) && not_holding(B)). |
| */ |
| WARN_ON(!mutex_is_locked(&mode_config->mutex) && |
| !drm_modeset_is_locked(&mode_config->connection_mutex)); |
| } |
| |
| #endif /* __DRM_CRTC_H__ */ |