#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_framebuffer;
-struct drm_object_properties;
struct drm_file;
struct drm_clip_rect;
struct device_node;
struct fence;
struct edid;
-struct drm_mode_object {
- uint32_t id;
- uint32_t type;
- struct drm_object_properties *properties;
- struct kref refcount;
- void (*free_cb)(struct kref *kref);
-};
-
-#define DRM_OBJECT_MAX_PROPERTY 24
-struct drm_object_properties {
- int count, atomic_count;
- /* NOTE: if we ever start dynamically destroying properties (ie.
- * not at drm_mode_config_cleanup() time), then we'd have to do
- * a better job of detaching property from mode objects to avoid
- * dangling property pointers:
- */
- struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
- /* do not read/write values directly, but use drm_object_property_get_value()
- * and drm_object_property_set_value():
- */
- uint64_t values[DRM_OBJECT_MAX_PROPERTY];
-};
-
static inline int64_t U642I64(uint64_t val)
{
return (int64_t)*((int64_t *)&val);
return (uint64_t)*((uint64_t *)&val);
}
-/*
- * Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the
- * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and
- * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation
- */
-#define DRM_ROTATE_MASK 0x0f
-#define DRM_ROTATE_0 0
-#define DRM_ROTATE_90 1
-#define DRM_ROTATE_180 2
-#define DRM_ROTATE_270 3
-#define DRM_REFLECT_MASK (~DRM_ROTATE_MASK)
-#define DRM_REFLECT_X 4
-#define DRM_REFLECT_Y 5
-
-enum drm_connector_force {
- DRM_FORCE_UNSPECIFIED,
- DRM_FORCE_OFF,
- DRM_FORCE_ON, /* force on analog part normally */
- DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
-};
-
-#include <drm/drm_modes.h>
-
-enum drm_connector_status {
- connector_status_connected = 1,
- connector_status_disconnected = 2,
- connector_status_unknown = 3,
-};
-
-enum subpixel_order {
- SubPixelUnknown = 0,
- SubPixelHorizontalRGB,
- SubPixelHorizontalBGR,
- SubPixelVerticalRGB,
- SubPixelVerticalBGR,
- SubPixelNone,
-};
-
-#define DRM_COLOR_FORMAT_RGB444 (1<<0)
-#define DRM_COLOR_FORMAT_YCRCB444 (1<<1)
-#define DRM_COLOR_FORMAT_YCRCB422 (1<<2)
-
-#define DRM_BUS_FLAG_DE_LOW (1<<0)
-#define DRM_BUS_FLAG_DE_HIGH (1<<1)
-/* drive data on pos. edge */
-#define DRM_BUS_FLAG_PIXDATA_POSEDGE (1<<2)
-/* drive data on neg. edge */
-#define DRM_BUS_FLAG_PIXDATA_NEGEDGE (1<<3)
-
-/*
- * Describes a given display (e.g. CRT or flat panel) and its limitations.
- */
-struct drm_display_info {
- char name[DRM_DISPLAY_INFO_LEN];
-
- /* Physical size */
- unsigned int width_mm;
- unsigned int height_mm;
-
- /* Clock limits FIXME: storage format */
- unsigned int min_vfreq, max_vfreq;
- unsigned int min_hfreq, max_hfreq;
- unsigned int pixel_clock;
- unsigned int bpc;
-
- enum subpixel_order subpixel_order;
- u32 color_formats;
-
- const u32 *bus_formats;
- unsigned int num_bus_formats;
- u32 bus_flags;
-
- /* Mask of supported hdmi deep color modes */
- u8 edid_hdmi_dc_modes;
-
- u8 cea_rev;
-};
-
/* data corresponds to displayid vend/prod/serial */
struct drm_tile_group {
struct kref refcount;
u8 group_data[8];
};
-/**
- * struct drm_framebuffer_funcs - framebuffer hooks
- */
-struct drm_framebuffer_funcs {
- /**
- * @destroy:
- *
- * Clean up framebuffer resources, specifically also unreference the
- * backing storage. The core guarantees to call this function for every
- * framebuffer successfully created by ->fb_create() in
- * &drm_mode_config_funcs. Drivers must also call
- * drm_framebuffer_cleanup() to release DRM core resources for this
- * framebuffer.
- */
- void (*destroy)(struct drm_framebuffer *framebuffer);
-
- /**
- * @create_handle:
- *
- * Create a buffer handle in the driver-specific buffer manager (either
- * GEM or TTM) valid for the passed-in struct &drm_file. This is used by
- * the core to implement the GETFB IOCTL, which returns (for
- * sufficiently priviledged user) also a native buffer handle. This can
- * be used for seamless transitions between modesetting clients by
- * copying the current screen contents to a private buffer and blending
- * between that and the new contents.
- *
- * GEM based drivers should call drm_gem_handle_create() to create the
- * handle.
- *
- * RETURNS:
- *
- * 0 on success or a negative error code on failure.
- */
- int (*create_handle)(struct drm_framebuffer *fb,
- struct drm_file *file_priv,
- unsigned int *handle);
- /**
- * @dirty:
- *
- * Optional callback for the dirty fb IOCTL.
- *
- * Userspace can notify the driver via this callback that an area of the
- * framebuffer has changed and should be flushed to the display
- * hardware. This can also be used internally, e.g. by the fbdev
- * emulation, though that's not the case currently.
- *
- * See documentation in drm_mode.h for the struct drm_mode_fb_dirty_cmd
- * for more information as all the semantics and arguments have a one to
- * one mapping on this function.
- *
- * RETURNS:
- *
- * 0 on success or a negative error code on failure.
- */
- int (*dirty)(struct drm_framebuffer *framebuffer,
- struct drm_file *file_priv, unsigned flags,
- unsigned color, struct drm_clip_rect *clips,
- unsigned num_clips);
-};
-
-struct drm_framebuffer {
- struct drm_device *dev;
- /*
- * Note that the fb is refcounted for the benefit of driver internals,
- * for example some hw, disabling a CRTC/plane is asynchronous, and
- * scanout does not actually complete until the next vblank. So some
- * cleanup (like releasing the reference(s) on the backing GEM bo(s))
- * should be deferred. In cases like this, the driver would like to
- * hold a ref to the fb even though it has already been removed from
- * userspace perspective.
- * The refcount is stored inside the mode object.
- */
- /*
- * Place on the dev->mode_config.fb_list, access protected by
- * dev->mode_config.fb_lock.
- */
- struct list_head head;
- struct drm_mode_object base;
- const struct drm_framebuffer_funcs *funcs;
- unsigned int pitches[4];
- unsigned int offsets[4];
- uint64_t modifier[4];
- unsigned int width;
- unsigned int height;
- /* depth can be 15 or 16 */
- unsigned int depth;
- int bits_per_pixel;
- int flags;
- uint32_t pixel_format; /* fourcc format */
- int hot_x;
- int hot_y;
- struct list_head filp_head;
-};
-
-struct drm_property_blob {
- struct drm_mode_object base;
- struct drm_device *dev;
- struct list_head head_global;
- struct list_head head_file;
- size_t length;
- unsigned char data[];
-};
-
-struct drm_property_enum {
- uint64_t value;
- struct list_head head;
- char name[DRM_PROP_NAME_LEN];
-};
-
-struct drm_property {
- struct list_head head;
- struct drm_mode_object base;
- uint32_t flags;
- char name[DRM_PROP_NAME_LEN];
- uint32_t num_values;
- uint64_t *values;
- struct drm_device *dev;
-
- struct list_head enum_list;
-};
-
struct drm_crtc;
-struct drm_connector;
struct drm_encoder;
struct drm_pending_vblank_event;
struct drm_plane;
struct drm_crtc_helper_funcs;
struct drm_encoder_helper_funcs;
-struct drm_connector_helper_funcs;
struct drm_plane_helper_funcs;
/**
* @ctm: Transformation matrix
* @gamma_lut: Lookup table for converting pixel data after the
* conversion matrix
- * @event: optional pointer to a DRM event to signal upon completion of the
- * state update
* @state: backpointer to global drm_atomic_state
*
* Note that the distinction between @enable and @active is rather subtile:
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;
* counter and timestamp tracking though, e.g. if they have accurate
* timestamp registers in hardware.
*
- * FIXME:
- *
- * Up to that point drivers need to manage events themselves and can use
- * even->base.list freely for that. Specifically they need to ensure
- * that they don't send out page flip (or vblank) events for which the
- * corresponding drm file has been closed already. The drm core
- * unfortunately does not (yet) take care of that. Therefore drivers
- * currently must clean up and release pending events in their
- * ->preclose driver function.
- *
* This callback is optional.
*
* NOTE:
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:
*
* 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;
-};
-
-/**
- * struct drm_connector_state - mutable connector state
- * @connector: backpointer to the connector
- * @crtc: CRTC to connect connector to, NULL if disabled
- * @best_encoder: can be used by helpers and drivers to select the encoder
- * @state: backpointer to global drm_atomic_state
- */
-struct drm_connector_state {
- struct drm_connector *connector;
-
- struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_connector() */
-
- struct drm_encoder *best_encoder;
-
- struct drm_atomic_state *state;
-};
-
-/**
- * struct drm_connector_funcs - control connectors on a given device
- *
- * Each CRTC may have one or more connectors attached to it. The functions
- * below allow the core DRM code to control connectors, enumerate available modes,
- * etc.
- */
-struct drm_connector_funcs {
- /**
- * @dpms:
- *
- * Legacy entry point to set the per-connector DPMS state. Legacy DPMS
- * is exposed as a standard property on the connector, but diverted to
- * this callback in the drm core. Note that atomic drivers don't
- * implement the 4 level DPMS support on the connector any more, but
- * instead only have an on/off "ACTIVE" property on the CRTC object.
- *
- * Drivers implementing atomic modeset should use
- * drm_atomic_helper_connector_dpms() to implement this hook.
- *
- * RETURNS:
- *
- * 0 on success or a negative error code on failure.
- */
- int (*dpms)(struct drm_connector *connector, int mode);
-
- /**
- * @reset:
- *
- * Reset connector 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_connector_reset() to reset
- * atomic state using this hook.
- */
- void (*reset)(struct drm_connector *connector);
-
- /**
- * @detect:
- *
- * Check to see if anything is attached to the connector. The parameter
- * force is set to false whilst polling, true when checking the
- * connector due to a user request. force can be used by the driver to
- * avoid expensive, destructive operations during automated probing.
- *
- * FIXME:
- *
- * Note that this hook is only called by the probe helper. It's not in
- * the helper library vtable purely for historical reasons. The only DRM
- * core entry point to probe connector state is @fill_modes.
- *
- * RETURNS:
- *
- * drm_connector_status indicating the connector's status.
- */
- enum drm_connector_status (*detect)(struct drm_connector *connector,
- bool force);
-
- /**
- * @force:
- *
- * This function is called to update internal encoder state when the
- * connector is forced to a certain state by userspace, either through
- * the sysfs interfaces or on the kernel cmdline. In that case the
- * @detect callback isn't called.
- *
- * FIXME:
- *
- * Note that this hook is only called by the probe helper. It's not in
- * the helper library vtable purely for historical reasons. The only DRM
- * core entry point to probe connector state is @fill_modes.
- */
- void (*force)(struct drm_connector *connector);
-
- /**
- * @fill_modes:
- *
- * Entry point for output detection and basic mode validation. The
- * driver should reprobe the output if needed (e.g. when hotplug
- * handling is unreliable), add all detected modes to connector->modes
- * and filter out any the device can't support in any configuration. It
- * also needs to filter out any modes wider or higher than the
- * parameters max_width and max_height indicate.
- *
- * The drivers must also prune any modes no longer valid from
- * connector->modes. Furthermore it must update connector->status and
- * connector->edid. If no EDID has been received for this output
- * connector->edid must be NULL.
- *
- * Drivers using the probe helpers should use
- * drm_helper_probe_single_connector_modes() or
- * drm_helper_probe_single_connector_modes_nomerge() to implement this
- * function.
- *
- * RETURNS:
- *
- * The number of modes detected and filled into connector->modes.
- */
- int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
-
- /**
- * @set_property:
- *
- * This is the legacy entry point to update a property attached to the
- * connector.
- *
- * Drivers implementing atomic modeset should use
- * drm_atomic_helper_connector_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_connector *connector, struct drm_property *property,
- uint64_t val);
-
- /**
- * @late_register:
- *
- * This optional hook can be used to register additional userspace
- * interfaces attached to the connector, light backlight control, i2c,
- * DP aux or similar interfaces. It is called late in the driver load
- * sequence from drm_connector_register() when registering all the
- * core drm connector interfaces. 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_connector *connector);
-
- /**
- * @early_unregister:
- *
- * This optional hook should be used to unregister the additional
- * userspace interfaces attached to the connector from
- * late_unregister(). It is called from drm_connector_unregister(),
- * early in the driver unload sequence to disable userspace access
- * before data structures are torndown.
- */
- void (*early_unregister)(struct drm_connector *connector);
-
- /**
- * @destroy:
- *
- * Clean up connector resources. This is called at driver unload time
- * through drm_mode_config_cleanup(). It can also be called at runtime
- * when a connector is being hot-unplugged for drivers that support
- * connector hotplugging (e.g. DisplayPort MST).
- */
- void (*destroy)(struct drm_connector *connector);
-
- /**
- * @atomic_duplicate_state:
- *
- * Duplicate the current atomic state for this connector 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_connector_state should use
- * drm_atomic_helper_connector_duplicate_state(). Drivers that subclass the
- * state structure to extend it with driver-private state should use
- * __drm_atomic_helper_connector_duplicate_state() to make sure shared state is
- * duplicated in a consistent fashion across drivers.
- *
- * It is an error to call this hook before connector->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_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector);
-
- /**
- * @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_connector *connector,
- struct drm_connector_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_connector_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 shouldn't ever happen, the core only
- * asks for properties attached to this connector). 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_connector *connector,
- struct drm_connector_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 GETCONNECTOR IOCTL.
- *
- * Do not call this function directly, use
- * drm_atomic_connector_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 shouldn't ever happen, the core only asks for
- * properties attached to this connector).
- */
- int (*atomic_get_property)(struct drm_connector *connector,
- const struct drm_connector_state *state,
- struct drm_property *property,
- uint64_t *val);
-};
-
-/**
- * struct drm_encoder_funcs - encoder controls
- *
- * Encoders sit between CRTCs and connectors.
- */
-struct drm_encoder_funcs {
- /**
- * @reset:
- *
- * Reset encoder 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.
- */
- void (*reset)(struct drm_encoder *encoder);
-
- /**
- * @destroy:
- *
- * Clean up encoder resources. This is only called at driver unload time
- * through drm_mode_config_cleanup() since an encoder cannot be
- * hotplugged in DRM.
- */
- void (*destroy)(struct drm_encoder *encoder);
-
- /**
- * @late_register:
- *
- * This optional hook can be used to register additional userspace
- * interfaces attached to the encoder 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_encoder *encoder);
-
- /**
- * @early_unregister:
- *
- * This optional hook should be used to unregister the additional
- * userspace interfaces attached to the encoder 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_encoder *encoder);
-};
-
-#define DRM_CONNECTOR_MAX_ENCODER 3
-
-/**
- * struct drm_encoder - central DRM encoder structure
- * @dev: parent DRM device
- * @head: list management
- * @base: base KMS object
- * @name: human readable name, can be overwritten by the driver
- * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
- * @possible_crtcs: bitmask of potential CRTC bindings
- * @possible_clones: bitmask of potential sibling encoders for cloning
- * @crtc: currently bound CRTC
- * @bridge: bridge associated to the encoder
- * @funcs: control functions
- * @helper_private: mid-layer private data
- *
- * CRTCs drive pixels to encoders, which convert them into signals
- * appropriate for a given connector or set of connectors.
- */
-struct drm_encoder {
- struct drm_device *dev;
- struct list_head head;
-
- struct drm_mode_object base;
- char *name;
- int encoder_type;
-
- /**
- * @index: Position inside the mode_config.list, can be used as an array
- * index. It is invariant over the lifetime of the encoder.
- */
- unsigned index;
-
- uint32_t possible_crtcs;
- uint32_t possible_clones;
-
- struct drm_crtc *crtc;
- struct drm_bridge *bridge;
- const struct drm_encoder_funcs *funcs;
- const struct drm_encoder_helper_funcs *helper_private;
-};
-
-/* should we poll this connector for connects and disconnects */
-/* hot plug detectable */
-#define DRM_CONNECTOR_POLL_HPD (1 << 0)
-/* poll for connections */
-#define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
-/* can cleanly poll for disconnections without flickering the screen */
-/* DACs should rarely do this without a lot of testing */
-#define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
-
-#define MAX_ELD_BYTES 128
-
-/**
- * struct drm_connector - central DRM connector control structure
- * @dev: parent DRM device
- * @kdev: kernel device for sysfs attributes
- * @attr: sysfs attributes
- * @head: list management
- * @base: base KMS object
- * @name: human readable name, can be overwritten by the driver
- * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
- * @connector_type_id: index into connector type enum
- * @interlace_allowed: can this connector handle interlaced modes?
- * @doublescan_allowed: can this connector handle doublescan?
- * @stereo_allowed: can this connector handle stereo modes?
- * @registered: is this connector exposed (registered) with userspace?
- * @modes: modes available on this connector (from fill_modes() + user)
- * @status: one of the drm_connector_status enums (connected, not, or unknown)
- * @probed_modes: list of modes derived directly from the display
- * @display_info: information about attached display (e.g. from EDID)
- * @funcs: connector control functions
- * @edid_blob_ptr: DRM property containing EDID if present
- * @properties: property tracking for this connector
- * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
- * @dpms: current dpms state
- * @helper_private: mid-layer private data
- * @cmdline_mode: mode line parsed from the kernel cmdline for this connector
- * @force: a %DRM_FORCE_<foo> state for forced mode sets
- * @override_edid: has the EDID been overwritten through debugfs for testing?
- * @encoder_ids: valid encoders for this connector
- * @encoder: encoder driving this connector, if any
- * @eld: EDID-like data, if present
- * @dvi_dual: dual link DVI, if found
- * @max_tmds_clock: max clock rate, if found
- * @latency_present: AV delay info from ELD, if found
- * @video_latency: video latency info from ELD, if found
- * @audio_latency: audio latency info from ELD, if found
- * @null_edid_counter: track sinks that give us all zeros for the EDID
- * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
- * @edid_corrupt: indicates whether the last read EDID was corrupt
- * @debugfs_entry: debugfs directory for this connector
- * @state: current atomic state for this connector
- * @has_tile: is this connector connected to a tiled monitor
- * @tile_group: tile group for the connected monitor
- * @tile_is_single_monitor: whether the tile is one monitor housing
- * @num_h_tile: number of horizontal tiles in the tile group
- * @num_v_tile: number of vertical tiles in the tile group
- * @tile_h_loc: horizontal location of this tile
- * @tile_v_loc: vertical location of this tile
- * @tile_h_size: horizontal size of this tile.
- * @tile_v_size: vertical size of this tile.
- *
- * Each connector may be connected to one or more CRTCs, or may be clonable by
- * another connector if they can share a CRTC. Each connector also has a specific
- * position in the broader display (referred to as a 'screen' though it could
- * span multiple monitors).
- */
-struct drm_connector {
- struct drm_device *dev;
- struct device *kdev;
- struct device_attribute *attr;
- struct list_head head;
-
- struct drm_mode_object base;
-
- char *name;
-
- /**
- * @index: Compacted connector index, which matches the position inside
- * the mode_config.list for drivers not supporting hot-add/removing. Can
- * be used as an array index. It is invariant over the lifetime of the
- * connector.
- */
- unsigned index;
-
- int connector_type;
- int connector_type_id;
- bool interlace_allowed;
- bool doublescan_allowed;
- bool stereo_allowed;
- bool registered;
- struct list_head modes; /* list of modes on this connector */
-
- enum drm_connector_status status;
-
- /* these are modes added by probing with DDC or the BIOS */
- struct list_head probed_modes;
-
- struct drm_display_info display_info;
- const struct drm_connector_funcs *funcs;
-
- struct drm_property_blob *edid_blob_ptr;
- struct drm_object_properties properties;
-
- /**
- * @path_blob_ptr:
- *
- * DRM blob property data for the DP MST path property.
- */
- struct drm_property_blob *path_blob_ptr;
-
- /**
- * @tile_blob_ptr:
- *
- * DRM blob property data for the tile property (used mostly by DP MST).
- * This is meant for screens which are driven through separate display
- * pipelines represented by &drm_crtc, which might not be running with
- * genlocked clocks. For tiled panels which are genlocked, like
- * dual-link LVDS or dual-link DSI, the driver should try to not expose
- * the tiling and virtualize both &drm_crtc and &drm_plane if needed.
- */
- struct drm_property_blob *tile_blob_ptr;
-
- uint8_t polled; /* DRM_CONNECTOR_POLL_* */
-
- /* requested DPMS state */
- int dpms;
-
- const struct drm_connector_helper_funcs *helper_private;
-
- /* forced on connector */
- struct drm_cmdline_mode cmdline_mode;
- enum drm_connector_force force;
- bool override_edid;
- uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
- struct drm_encoder *encoder; /* currently active encoder */
-
- /* EDID bits */
- uint8_t eld[MAX_ELD_BYTES];
- bool dvi_dual;
- int max_tmds_clock; /* in MHz */
- bool latency_present[2];
- int video_latency[2]; /* [0]: progressive, [1]: interlaced */
- int audio_latency[2];
- int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
- unsigned bad_edid_counter;
-
- /* Flag for raw EDID header corruption - used in Displayport
- * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6
- */
- bool edid_corrupt;
-
- struct dentry *debugfs_entry;
-
- struct drm_connector_state *state;
-
- /* DisplayID bits */
- bool has_tile;
- struct drm_tile_group *tile_group;
- bool tile_is_single_monitor;
-
- uint8_t num_h_tile, num_v_tile;
- uint8_t tile_h_loc, tile_v_loc;
- uint16_t tile_h_size, tile_v_size;
-};
-
-/**
- * struct drm_plane_state - mutable plane state
- * @plane: backpointer to the plane
- * @crtc: currently bound CRTC, NULL if disabled
- * @fb: currently bound framebuffer
- * @fence: optional fence to wait for before scanning out @fb
- * @crtc_x: left position of visible portion of plane on crtc
- * @crtc_y: upper position of visible portion of plane on crtc
- * @crtc_w: width of visible portion of plane on crtc
- * @crtc_h: height of visible portion of plane on crtc
- * @src_x: left position of visible portion of plane within
- * plane (in 16.16)
- * @src_y: upper position of visible portion of plane within
- * plane (in 16.16)
- * @src_w: width of visible portion of plane (in 16.16)
- * @src_h: height of visible portion of plane (in 16.16)
- * @rotation: rotation of the plane
- * @zpos: priority of the given plane on crtc (optional)
- * @normalized_zpos: normalized value of zpos: unique, range from 0 to N-1
- * where N is the number of active planes for given crtc
- * @state: backpointer to global drm_atomic_state
- */
-struct drm_plane_state {
- struct drm_plane *plane;
-
- struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_plane() */
- struct drm_framebuffer *fb; /* do not write directly, use drm_atomic_set_fb_for_plane() */
- struct fence *fence;
-
- /* Signed dest location allows it to be partially off screen */
- int32_t crtc_x, crtc_y;
- uint32_t crtc_w, crtc_h;
-
- /* Source values are 16.16 fixed point */
- uint32_t src_x, src_y;
- uint32_t src_h, src_w;
-
- /* Plane rotation */
- unsigned int rotation;
-
- /* Plane zpos */
- unsigned int zpos;
- unsigned int normalized_zpos;
-
- struct drm_atomic_state *state;
-};
-
-
-/**
- * struct drm_plane_funcs - driver plane control functions
- */
-struct drm_plane_funcs {
- /**
- * @update_plane:
- *
- * This is the legacy entry point to enable and configure the plane for
- * the given CRTC and framebuffer. It is never called to disable the
- * plane, i.e. the passed-in crtc and fb paramters are never NULL.
- *
- * The source rectangle in frame buffer memory coordinates is given by
- * the src_x, src_y, src_w and src_h parameters (as 16.16 fixed point
- * values). Devices that don't support subpixel plane coordinates can
- * ignore the fractional part.
- *
- * The destination rectangle in CRTC coordinates is given by the
- * crtc_x, crtc_y, crtc_w and crtc_h parameters (as integer values).
- * Devices scale the source rectangle to the destination rectangle. If
- * scaling is not supported, and the source rectangle size doesn't match
- * the destination rectangle size, the driver must return a
- * -<errorname>EINVAL</errorname> error.
- *
- * Drivers implementing atomic modeset should use
- * drm_atomic_helper_update_plane() to implement this hook.
- *
- * RETURNS:
- *
- * 0 on success or a negative error code on failure.
- */
- int (*update_plane)(struct drm_plane *plane,
- struct drm_crtc *crtc, struct drm_framebuffer *fb,
- int crtc_x, int crtc_y,
- unsigned int crtc_w, unsigned int crtc_h,
- uint32_t src_x, uint32_t src_y,
- uint32_t src_w, uint32_t src_h);
-
- /**
- * @disable_plane:
- *
- * This is the legacy entry point to disable the plane. The DRM core
- * calls this method in response to a DRM_IOCTL_MODE_SETPLANE IOCTL call
- * with the frame buffer ID set to 0. Disabled planes must not be
- * processed by the CRTC.
- *
- * Drivers implementing atomic modeset should use
- * drm_atomic_helper_disable_plane() to implement this hook.
- *
- * RETURNS:
- *
- * 0 on success or a negative error code on failure.
- */
- int (*disable_plane)(struct drm_plane *plane);
-
- /**
- * @destroy:
- *
- * Clean up plane resources. This is only called at driver unload time
- * through drm_mode_config_cleanup() since a plane cannot be hotplugged
- * in DRM.
- */
- void (*destroy)(struct drm_plane *plane);
-
- /**
- * @reset:
- *
- * Reset plane 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_plane_reset() to reset
- * atomic state using this hook.
- */
- void (*reset)(struct drm_plane *plane);
-
- /**
- * @set_property:
- *
- * This is the legacy entry point to update a property attached to the
- * plane.
- *
- * Drivers implementing atomic modeset should use
- * drm_atomic_helper_plane_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_plane *plane,
- struct drm_property *property, uint64_t val);
-
- /**
- * @atomic_duplicate_state:
- *
- * Duplicate the current atomic state for this plane 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_plane_state should use
- * drm_atomic_helper_plane_duplicate_state(). Drivers that subclass the
- * state structure to extend it with driver-private state should use
- * __drm_atomic_helper_plane_duplicate_state() to make sure shared state is
- * duplicated in a consistent fashion across drivers.
- *
- * It is an error to call this hook before plane->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_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane);
-
- /**
- * @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_plane *plane,
- struct drm_plane_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_plane_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 shouldn't ever happen, the core only
- * asks for properties attached to this plane). 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_plane *plane,
- struct drm_plane_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 GETPLANE IOCTL.
- *
- * Do not call this function directly, use
- * drm_atomic_plane_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 plane).
- */
- int (*atomic_get_property)(struct drm_plane *plane,
- const struct drm_plane_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 plane 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_plane *plane);
-
- /**
- * @early_unregister:
- *
- * This optional hook should be used to unregister the additional
- * userspace interfaces attached to the plane 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_plane *plane);
-};
-
-enum drm_plane_type {
- DRM_PLANE_TYPE_OVERLAY,
- DRM_PLANE_TYPE_PRIMARY,
- DRM_PLANE_TYPE_CURSOR,
-};
-
-
-/**
- * struct drm_plane - central DRM plane control structure
- * @dev: DRM device this plane belongs to
- * @head: for list management
- * @name: human readable name, can be overwritten by the driver
- * @base: base mode object
- * @possible_crtcs: pipes this plane can be bound to
- * @format_types: array of formats supported by this plane
- * @format_count: number of formats supported
- * @format_default: driver hasn't supplied supported formats for the plane
- * @crtc: currently bound CRTC
- * @fb: currently bound fb
- * @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by
- * drm_mode_set_config_internal() to implement correct refcounting.
- * @funcs: helper functions
- * @properties: property tracking for this plane
- * @type: type of plane (overlay, primary, cursor)
- * @state: current atomic state for this plane
- * @zpos_property: zpos property for this plane
- * @helper_private: mid-layer private data
- */
-struct drm_plane {
- struct drm_device *dev;
- struct list_head head;
-
- char *name;
-
- /**
- * @mutex:
- *
- * Protects modeset plane state, together with the mutex of &drm_crtc
- * this plane is linked to (when active, getting actived or getting
- * disabled).
- */
- struct drm_modeset_lock mutex;
-
- struct drm_mode_object base;
-
- uint32_t possible_crtcs;
- uint32_t *format_types;
- unsigned int format_count;
- bool format_default;
-
- struct drm_crtc *crtc;
- struct drm_framebuffer *fb;
-
- struct drm_framebuffer *old_fb;
-
- const struct drm_plane_funcs *funcs;
-
- struct drm_object_properties properties;
-
- enum drm_plane_type type;
-
- /**
- * @index: Position inside the mode_config.list, can be used as an array
- * index. It is invariant over the lifetime of the plane.
- */
- unsigned index;
-
- const struct drm_plane_helper_funcs *helper_private;
-
- struct drm_plane_state *state;
-
- struct drm_property *zpos_property;
-};
-
-/**
- * struct drm_bridge_funcs - drm_bridge control functions
- * @attach: Called during drm_bridge_attach
- */
-struct drm_bridge_funcs {
- int (*attach)(struct drm_bridge *bridge);
-
- /**
- * @mode_fixup:
- *
- * This callback is used to validate and adjust a mode. The paramater
- * mode is the display mode that should be fed to the next element in
- * the display chain, either the final &drm_connector or the next
- * &drm_bridge. The parameter adjusted_mode is the input mode the bridge
- * requires. It can be modified by this callback and does not need to
- * match mode.
- *
- * This is the only hook that allows a bridge to reject a modeset. If
- * this function passes all other callbacks must succeed for this
- * configuration.
- *
- * NOTE:
- *
- * This function is called in the check 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.
- *
- * RETURNS:
- *
- * True if an acceptable configuration is possible, false if the modeset
- * operation should be rejected.
- */
- bool (*mode_fixup)(struct drm_bridge *bridge,
- const struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode);
- /**
- * @disable:
- *
- * This callback should disable the bridge. It is called right before
- * the preceding element in the display pipe is disabled. If the
- * preceding element is a bridge this means it's called before that
- * bridge's ->disable() function. If the preceding element is a
- * &drm_encoder it's called right before the encoder's ->disable(),
- * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
- *
- * The bridge can assume that the display pipe (i.e. clocks and timing
- * signals) feeding it is still running when this callback is called.
- *
- * The disable callback is optional.
- */
- void (*disable)(struct drm_bridge *bridge);
-
- /**
- * @post_disable:
- *
- * This callback should disable the bridge. It is called right after
- * the preceding element in the display pipe is disabled. If the
- * preceding element is a bridge this means it's called after that
- * bridge's ->post_disable() function. If the preceding element is a
- * &drm_encoder it's called right after the encoder's ->disable(),
- * ->prepare() or ->dpms() hook from struct &drm_encoder_helper_funcs.
- *
- * The bridge must assume that the display pipe (i.e. clocks and timing
- * singals) feeding it is no longer running when this callback is
- * called.
- *
- * The post_disable callback is optional.
- */
- void (*post_disable)(struct drm_bridge *bridge);
-
- /**
- * @mode_set:
- *
- * This callback should set the given mode on the bridge. It is called
- * after the ->mode_set() callback for the preceding element in the
- * display pipeline has been called already. The display pipe (i.e.
- * clocks and timing signals) is off when this function is called.
- */
- void (*mode_set)(struct drm_bridge *bridge,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode);
- /**
- * @pre_enable:
- *
- * This callback should enable the bridge. It is called right before
- * the preceding element in the display pipe is enabled. If the
- * preceding element is a bridge this means it's called before that
- * bridge's ->pre_enable() function. If the preceding element is a
- * &drm_encoder it's called right before the encoder's ->enable(),
- * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
- *
- * The display pipe (i.e. clocks and timing signals) feeding this bridge
- * will not yet be running when this callback is called. The bridge must
- * not enable the display link feeding the next bridge in the chain (if
- * there is one) when this callback is called.
+ * Returns:
*
- * The pre_enable callback is optional.
+ * 0 on success, or a negative error code on failure.
*/
- void (*pre_enable)(struct drm_bridge *bridge);
+ int (*late_register)(struct drm_crtc *crtc);
/**
- * @enable:
- *
- * This callback should enable the bridge. It is called right after
- * the preceding element in the display pipe is enabled. If the
- * preceding element is a bridge this means it's called after that
- * bridge's ->enable() function. If the preceding element is a
- * &drm_encoder it's called right after the encoder's ->enable(),
- * ->commit() or ->dpms() hook from struct &drm_encoder_helper_funcs.
- *
- * The bridge can assume that the display pipe (i.e. clocks and timing
- * signals) feeding it is running when this callback is called. This
- * callback must enable the display link feeding the next bridge in the
- * chain if there is one.
+ * @early_unregister:
*
- * The enable callback is optional.
+ * 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 (*enable)(struct drm_bridge *bridge);
+ void (*early_unregister)(struct drm_crtc *crtc);
};
/**
- * struct drm_bridge - central DRM bridge control structure
- * @dev: DRM device this bridge belongs to
- * @encoder: encoder to which this bridge is connected
- * @next: the next bridge in the encoder chain
- * @of_node: device node pointer to the bridge
- * @list: to keep track of all added bridges
- * @funcs: control functions
- * @driver_private: pointer to the bridge driver's internal context
+ * 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_bridge {
+struct drm_crtc {
struct drm_device *dev;
- struct drm_encoder *encoder;
- struct drm_bridge *next;
-#ifdef CONFIG_OF
- struct device_node *of_node;
-#endif
- struct list_head list;
-
- const struct drm_bridge_funcs *funcs;
- void *driver_private;
-};
+ struct device_node *port;
+ struct list_head head;
-/**
- * struct drm_crtc_commit - track modeset commits on a CRTC
- *
- * This structure is used to track pending modeset changes and atomic commit on
- * a per-CRTC basis. Since updating the list should never block this structure
- * is reference counted to allow waiters to safely wait on an event to complete,
- * without holding any locks.
- *
- * It has 3 different events in total to allow a fine-grained synchronization
- * between outstanding updates::
- *
- * atomic commit thread hardware
- *
- * write new state into hardware ----> ...
- * signal hw_done
- * switch to new state on next
- * ... v/hblank
- *
- * wait for buffers to show up ...
- *
- * ... send completion irq
- * irq handler signals flip_done
- * cleanup old buffers
- *
- * signal cleanup_done
- *
- * wait for flip_done <----
- * clean up atomic state
- *
- * The important bit to know is that cleanup_done is the terminal event, but the
- * ordering between flip_done and hw_done is entirely up to the specific driver
- * and modeset state change.
- *
- * For an implementation of how to use this look at
- * drm_atomic_helper_setup_commit() from the atomic helper library.
- */
-struct drm_crtc_commit {
- /**
- * @crtc:
- *
- * DRM CRTC for this commit.
- */
- struct drm_crtc *crtc;
+ char *name;
/**
- * @ref:
+ * @mutex:
*
- * Reference count for this structure. Needed to allow blocking on
- * completions without the risk of the completion disappearing
- * meanwhile.
+ * 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 kref ref;
+ struct drm_modeset_lock mutex;
+
+ struct drm_mode_object base;
+
+ /* primary and cursor planes for CRTC */
+ struct drm_plane *primary;
+ struct drm_plane *cursor;
/**
- * @flip_done:
- *
- * Will be signaled when the hardware has flipped to the new set of
- * buffers. Signals at the same time as when the drm event for this
- * commit is sent to userspace, or when an out-fence is singalled. Note
- * that for most hardware, in most cases this happens after @hw_done is
- * signalled.
+ * @index: Position inside the mode_config.list, can be used as an array
+ * index. It is invariant over the lifetime of the CRTC.
*/
- struct completion flip_done;
+ unsigned index;
- /**
- * @hw_done:
- *
- * Will be signalled when all hw register changes for this commit have
- * been written out. Especially when disabling a pipe this can be much
- * later than than @flip_done, since that can signal already when the
- * screen goes black, whereas to fully shut down a pipe more register
- * I/O is required.
- *
- * Note that this does not need to include separately reference-counted
- * resources like backing storage buffer pinning, or runtime pm
- * management.
+ /* 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 completion hw_done;
+ 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;
/**
- * @cleanup_done:
+ * @state:
*
- * Will be signalled after old buffers have been cleaned up by calling
- * drm_atomic_helper_cleanup_planes(). Since this can only happen after
- * a vblank wait completed it might be a bit later. This completion is
- * useful to throttle updates and avoid hardware updates getting ahead
- * of the buffer cleanup too much.
+ * Current atomic state for this CRTC.
*/
- struct completion cleanup_done;
+ struct drm_crtc_state *state;
/**
- * @commit_entry:
+ * @commit_list:
*
- * Entry on the per-CRTC commit_list. Protected by crtc->commit_lock.
+ * 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_entry;
+ struct list_head commit_list;
/**
- * @event:
+ * @commit_lock:
*
- * &drm_pending_vblank_event pointer to clean up private events.
+ * Spinlock to protect @commit_list.
*/
- struct drm_pending_vblank_event *event;
-};
-
-struct __drm_planes_state {
- struct drm_plane *ptr;
- struct drm_plane_state *state;
-};
-
-struct __drm_crtcs_state {
- struct drm_crtc *ptr;
- struct drm_crtc_state *state;
- struct drm_crtc_commit *commit;
-};
-
-struct __drm_connnectors_state {
- struct drm_connector *ptr;
- struct drm_connector_state *state;
-};
-
-/**
- * struct drm_atomic_state - the global state object for atomic updates
- * @dev: parent DRM device
- * @allow_modeset: allow full modeset
- * @legacy_cursor_update: hint to enforce legacy cursor IOCTL semantics
- * @legacy_set_config: Disable conflicting encoders instead of failing with -EINVAL.
- * @planes: pointer to array of structures with per-plane data
- * @crtcs: pointer to array of CRTC pointers
- * @num_connector: size of the @connectors and @connector_states arrays
- * @connectors: pointer to array of structures with per-connector data
- * @acquire_ctx: acquire context for this atomic modeset state update
- */
-struct drm_atomic_state {
- struct drm_device *dev;
- bool allow_modeset : 1;
- bool legacy_cursor_update : 1;
- bool legacy_set_config : 1;
- struct __drm_planes_state *planes;
- struct __drm_crtcs_state *crtcs;
- int num_connector;
- struct __drm_connnectors_state *connectors;
-
- struct drm_modeset_acquire_ctx *acquire_ctx;
+ spinlock_t commit_lock;
/**
- * @commit_work:
+ * @acquire_ctx:
*
- * Work item which can be used by the driver or helpers to execute the
- * commit without blocking.
+ * Per-CRTC implicit acquire context used by atomic drivers for legacy
+ * IOCTLs, so that atomic drivers can get at the locking acquire
+ * context.
*/
- struct work_struct commit_work;
+ struct drm_modeset_acquire_ctx *acquire_ctx;
};
-
/**
* struct drm_mode_set - new values for a CRTC config change
* @fb: framebuffer to use for new config
* 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. 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.
+ * 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:
*
* HDMI infoframe aspect ratio setting.
*/
struct drm_property *aspect_ratio_property;
- /**
- * @dirty_info_property: Optional connector property to give userspace a
- * hint that the DIRTY_FB ioctl should be used.
- */
- struct drm_property *dirty_info_property;
-
/**
* @degamma_lut_property: Optional CRTC property to set the LUT used to
* convert the framebuffer's colors to linear gamma.
struct drm_mode_config_helper_funcs *helper_private;
};
-/**
- * drm_for_each_plane_mask - iterate over planes specified by bitmask
- * @plane: the loop cursor
- * @dev: the DRM device
- * @plane_mask: bitmask of plane indices
- *
- * Iterate over all planes specified by bitmask.
- */
-#define drm_for_each_plane_mask(plane, dev, plane_mask) \
- list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
- for_each_if ((plane_mask) & (1 << drm_plane_index(plane)))
-
-/**
- * drm_for_each_encoder_mask - iterate over encoders specified by bitmask
- * @encoder: the loop cursor
- * @dev: the DRM device
- * @encoder_mask: bitmask of encoder indices
- *
- * Iterate over all encoders specified by bitmask.
- */
-#define drm_for_each_encoder_mask(encoder, dev, encoder_mask) \
- list_for_each_entry((encoder), &(dev)->mode_config.encoder_list, head) \
- for_each_if ((encoder_mask) & (1 << drm_encoder_index(encoder)))
-
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
-#define obj_to_connector(x) container_of(x, struct drm_connector, base)
-#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
-#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
-#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
-#define obj_to_property(x) container_of(x, struct drm_property, base)
-#define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
-#define obj_to_plane(x) container_of(x, struct drm_plane, base)
-
-struct drm_prop_enum_list {
- int type;
- char *name;
-};
extern __printf(6, 7)
int drm_crtc_init_with_planes(struct drm_device *dev,
* 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(struct drm_crtc *crtc)
+static inline unsigned int drm_crtc_index(const struct drm_crtc *crtc)
{
return crtc->index;
}
return 1 << drm_crtc_index(crtc);
}
-int drm_connector_init(struct drm_device *dev,
- struct drm_connector *connector,
- const struct drm_connector_funcs *funcs,
- int connector_type);
-int drm_connector_register(struct drm_connector *connector);
-void drm_connector_unregister(struct drm_connector *connector);
-
-extern void drm_connector_cleanup(struct drm_connector *connector);
-static inline unsigned drm_connector_index(struct drm_connector *connector)
-{
- return connector->index;
-}
-
-extern __printf(5, 6)
-int drm_encoder_init(struct drm_device *dev,
- struct drm_encoder *encoder,
- const struct drm_encoder_funcs *funcs,
- int encoder_type, const char *name, ...);
-
-/**
- * drm_encoder_index - find the index of a registered encoder
- * @encoder: encoder to find index for
- *
- * Given a registered encoder, return the index of that encoder within a DRM
- * device's list of encoders.
- */
-static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
-{
- return encoder->index;
-}
-
-/**
- * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
- * @encoder: encoder to test
- * @crtc: crtc to test
- *
- * Return false if @encoder can't be driven by @crtc, true otherwise.
- */
-static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
- struct drm_crtc *crtc)
-{
- return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
-}
-
-extern __printf(8, 9)
-int drm_universal_plane_init(struct drm_device *dev,
- struct drm_plane *plane,
- unsigned long possible_crtcs,
- const struct drm_plane_funcs *funcs,
- const uint32_t *formats,
- unsigned int format_count,
- enum drm_plane_type type,
- const char *name, ...);
-extern int drm_plane_init(struct drm_device *dev,
- struct drm_plane *plane,
- unsigned long possible_crtcs,
- const struct drm_plane_funcs *funcs,
- const uint32_t *formats, unsigned int format_count,
- bool is_primary);
-extern void drm_plane_cleanup(struct drm_plane *plane);
-
-/**
- * drm_plane_index - find the index of a registered plane
- * @plane: plane to find index for
- *
- * Given a registered plane, return the index of that plane within a DRM
- * device's list of planes.
- */
-static inline unsigned int drm_plane_index(struct drm_plane *plane)
-{
- return plane->index;
-}
-extern struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx);
-extern void drm_plane_force_disable(struct drm_plane *plane);
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_encoder_cleanup(struct drm_encoder *encoder);
-
-extern const char *drm_get_connector_status_name(enum drm_connector_status status);
-extern const char *drm_get_subpixel_order_name(enum subpixel_order order);
-extern const char *drm_get_dpms_name(int val);
-extern const char *drm_get_dvi_i_subconnector_name(int val);
-extern const char *drm_get_dvi_i_select_name(int val);
-extern const char *drm_get_tv_subconnector_name(int val);
-extern const char *drm_get_tv_select_name(int val);
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_connector_set_path_property(struct drm_connector *connector,
- const char *path);
-int drm_mode_connector_set_tile_property(struct drm_connector *connector);
-extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
- const struct edid *edid);
-
-extern int drm_display_info_set_bus_formats(struct drm_display_info *info,
- const u32 *formats,
- unsigned int num_formats);
-
-static inline bool drm_property_type_is(struct drm_property *property,
- uint32_t type)
-{
- /* instanceof for props.. handles extended type vs original types: */
- if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
- return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
- return property->flags & type;
-}
-
-extern int drm_object_property_set_value(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t val);
-extern int drm_object_property_get_value(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t *value);
-extern int drm_framebuffer_init(struct drm_device *dev,
- struct drm_framebuffer *fb,
- const struct drm_framebuffer_funcs *funcs);
-extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
- uint32_t id);
-extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
-extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
-extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
-
-extern void drm_object_attach_property(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t init_val);
-extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
- const char *name, int num_values);
-extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
- const char *name,
- const struct drm_prop_enum_list *props,
- int num_values);
-struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
- int flags, const char *name,
- const struct drm_prop_enum_list *props,
- int num_props,
- uint64_t supported_bits);
-struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
- uint64_t min, uint64_t max);
-struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
- int flags, const char *name,
- int64_t min, int64_t max);
-struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type);
-struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name);
-struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
- size_t length,
- const void *data);
-struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
- uint32_t id);
-struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
-void drm_property_unreference_blob(struct drm_property_blob *blob);
-extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
-extern int drm_property_add_enum(struct drm_property *property, int index,
- uint64_t value, const char *name);
-extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
-extern int drm_mode_create_tv_properties(struct drm_device *dev,
- unsigned int num_modes,
- const char * const modes[]);
-extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
-extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
-extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
-extern int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
-
-extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
- struct drm_encoder *encoder);
-extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
- int gamma_size);
-
extern int drm_mode_set_config_internal(struct drm_mode_set *set);
-extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
-
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,
extern void drm_mode_put_tile_group(struct drm_device *dev,
struct drm_tile_group *tg);
-extern int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
- struct drm_property *property,
- uint64_t value);
-
-extern struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
- unsigned int supported_rotations);
-extern unsigned int drm_rotation_simplify(unsigned int rotation,
- unsigned int supported_rotations);
-extern void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
- uint degamma_lut_size,
- bool has_ctm,
- uint gamma_lut_size);
-
-int drm_plane_create_zpos_property(struct drm_plane *plane,
- unsigned int zpos,
- unsigned int min, unsigned int max);
-
-int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
- unsigned int zpos);
-
/* Helpers */
-struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
- uint32_t id, uint32_t type);
-void drm_mode_object_reference(struct drm_mode_object *obj);
-void drm_mode_object_unreference(struct drm_mode_object *obj);
-
-static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE);
- return mo ? obj_to_plane(mo) : NULL;
-}
-
static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
uint32_t id)
{
return mo ? obj_to_crtc(mo) : NULL;
}
-static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
- return mo ? obj_to_encoder(mo) : NULL;
-}
-
-/**
- * drm_connector_lookup - lookup connector object
- * @dev: DRM device
- * @id: connector object id
- *
- * This function looks up the connector object specified by id
- * add takes a reference to it.
- */
-static inline struct drm_connector *drm_connector_lookup(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR);
- return mo ? obj_to_connector(mo) : NULL;
-}
-
-static inline struct drm_property *drm_property_find(struct drm_device *dev,
- uint32_t id)
-{
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
- return mo ? obj_to_property(mo) : NULL;
-}
-
-/*
- * Extract a degamma/gamma LUT value provided by user and round it to the
- * precision supported by the hardware.
- */
-static inline uint32_t drm_color_lut_extract(uint32_t user_input,
- uint32_t bit_precision)
-{
- uint32_t val = user_input;
- uint32_t max = 0xffff >> (16 - bit_precision);
-
- /* Round only if we're not using full precision. */
- if (bit_precision < 16) {
- val += 1UL << (16 - bit_precision - 1);
- val >>= 16 - bit_precision;
- }
-
- return clamp_val(val, 0, max);
-}
-
-/**
- * drm_framebuffer_reference - incr the fb refcnt
- * @fb: framebuffer
- *
- * This functions increments the fb's refcount.
- */
-static inline void drm_framebuffer_reference(struct drm_framebuffer *fb)
-{
- drm_mode_object_reference(&fb->base);
-}
-
-/**
- * drm_framebuffer_unreference - unref a framebuffer
- * @fb: framebuffer to unref
- *
- * This functions decrements the fb's refcount and frees it if it drops to zero.
- */
-static inline void drm_framebuffer_unreference(struct drm_framebuffer *fb)
-{
- drm_mode_object_unreference(&fb->base);
-}
-
-/**
- * drm_framebuffer_read_refcount - read the framebuffer reference count.
- * @fb: framebuffer
- *
- * This functions returns the framebuffer's reference count.
- */
-static inline uint32_t drm_framebuffer_read_refcount(struct drm_framebuffer *fb)
-{
- return atomic_read(&fb->base.refcount.refcount);
-}
-
-/**
- * drm_connector_reference - incr the connector refcnt
- * @connector: connector
- *
- * This function increments the connector's refcount.
- */
-static inline void drm_connector_reference(struct drm_connector *connector)
-{
- drm_mode_object_reference(&connector->base);
-}
-
-/**
- * drm_connector_unreference - unref a connector
- * @connector: connector to unref
- *
- * This function decrements the connector's refcount and frees it if it drops to zero.
- */
-static inline void drm_connector_unreference(struct drm_connector *connector)
-{
- drm_mode_object_unreference(&connector->base);
-}
-
-/* Plane list iterator for legacy (overlay only) planes. */
-#define drm_for_each_legacy_plane(plane, dev) \
- list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) \
- for_each_if (plane->type == DRM_PLANE_TYPE_OVERLAY)
-
-#define drm_for_each_plane(plane, dev) \
- list_for_each_entry(plane, &(dev)->mode_config.plane_list, head)
-
#define drm_for_each_crtc(crtc, dev) \
list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head)
!drm_modeset_is_locked(&mode_config->connection_mutex));
}
-#define drm_for_each_connector(connector, dev) \
- for (assert_drm_connector_list_read_locked(&(dev)->mode_config), \
- connector = list_first_entry(&(dev)->mode_config.connector_list, \
- struct drm_connector, head); \
- &connector->head != (&(dev)->mode_config.connector_list); \
- connector = list_next_entry(connector, head))
-
-#define drm_for_each_encoder(encoder, dev) \
- list_for_each_entry(encoder, &(dev)->mode_config.encoder_list, head)
-
-#define drm_for_each_fb(fb, dev) \
- for (WARN_ON(!mutex_is_locked(&(dev)->mode_config.fb_lock)), \
- fb = list_first_entry(&(dev)->mode_config.fb_list, \
- struct drm_framebuffer, head); \
- &fb->head != (&(dev)->mode_config.fb_list); \
- fb = list_next_entry(fb, head))
-
-/* drm_edid.c */
-bool drm_probe_ddc(struct i2c_adapter *adapter);
-struct edid *drm_get_edid(struct drm_connector *connector,
- struct i2c_adapter *adapter);
-struct edid *drm_get_edid_switcheroo(struct drm_connector *connector,
- struct i2c_adapter *adapter);
-struct edid *drm_edid_duplicate(const struct edid *edid);
-int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
-
-u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
-enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code);
-bool drm_detect_hdmi_monitor(struct edid *edid);
-bool drm_detect_monitor_audio(struct edid *edid);
-bool drm_rgb_quant_range_selectable(struct edid *edid);
-int drm_add_modes_noedid(struct drm_connector *connector,
- int hdisplay, int vdisplay);
-void drm_set_preferred_mode(struct drm_connector *connector,
- int hpref, int vpref);
-
-int drm_edid_header_is_valid(const u8 *raw_edid);
-bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
- bool *edid_corrupt);
-bool drm_edid_is_valid(struct edid *edid);
-void drm_edid_get_monitor_name(struct edid *edid, char *name,
- int buflen);
-struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
- int hsize, int vsize, int fresh,
- bool rb);
-
-/* drm_bridge.c */
-extern int drm_bridge_add(struct drm_bridge *bridge);
-extern void drm_bridge_remove(struct drm_bridge *bridge);
-extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
-extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
-
-bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
- const struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode);
-void drm_bridge_disable(struct drm_bridge *bridge);
-void drm_bridge_post_disable(struct drm_bridge *bridge);
-void drm_bridge_mode_set(struct drm_bridge *bridge,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode);
-void drm_bridge_pre_enable(struct drm_bridge *bridge);
-void drm_bridge_enable(struct drm_bridge *bridge);
-
#endif /* __DRM_CRTC_H__ */
projects / cascardo / linux.git / blobdiff