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  1. /*
  2.  * Copyright © 2006 Keith Packard
  3.  * Copyright © 2007-2008 Dave Airlie
  4.  * Copyright © 2007-2008 Intel Corporation
  5.  *   Jesse Barnes <jesse.barnes@intel.com>
  6.  *
  7.  * Permission is hereby granted, free of charge, to any person obtaining a
  8.  * copy of this software and associated documentation files (the "Software"),
  9.  * to deal in the Software without restriction, including without limitation
  10.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11.  * and/or sell copies of the Software, and to permit persons to whom the
  12.  * Software is furnished to do so, subject to the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice shall be included in
  15.  * all copies or substantial portions of the Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20.  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23.  * OTHER DEALINGS IN THE SOFTWARE.
  24.  */
  25. #ifndef __DRM_CRTC_H__
  26. #define __DRM_CRTC_H__
  27.  
  28. #include <linux/i2c.h>
  29. #include <linux/spinlock.h>
  30. #include <linux/types.h>
  31. #include <linux/idr.h>
  32. #include <linux/fb.h>
  33. #include <linux/hdmi.h>
  34. #include <drm/drm_mode.h>
  35. #include <drm/drm_fourcc.h>
  36. #include <drm/drm_modeset_lock.h>
  37.  
  38. struct drm_device;
  39. struct drm_mode_set;
  40. struct drm_framebuffer;
  41. struct drm_object_properties;
  42. struct drm_file;
  43. struct drm_clip_rect;
  44. struct device_node;
  45.  
  46. #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  47. #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  48. #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  49. #define DRM_MODE_OBJECT_MODE 0xdededede
  50. #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  51. #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  52. #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  53. #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  54. #define DRM_MODE_OBJECT_BRIDGE 0xbdbdbdbd
  55. #define DRM_MODE_OBJECT_ANY 0
  56.  
  57. struct drm_mode_object {
  58.         uint32_t id;
  59.         uint32_t type;
  60.         struct drm_object_properties *properties;
  61. };
  62.  
  63. #define DRM_OBJECT_MAX_PROPERTY 24
  64. struct drm_object_properties {
  65.         int count;
  66.         uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
  67.         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
  68. };
  69.  
  70. static inline int64_t U642I64(uint64_t val)
  71. {
  72.         return (int64_t)*((int64_t *)&val);
  73. }
  74. static inline uint64_t I642U64(int64_t val)
  75. {
  76.         return (uint64_t)*((uint64_t *)&val);
  77. }
  78.  
  79. /* rotation property bits */
  80. #define DRM_ROTATE_0    0
  81. #define DRM_ROTATE_90   1
  82. #define DRM_ROTATE_180  2
  83. #define DRM_ROTATE_270  3
  84. #define DRM_REFLECT_X   4
  85. #define DRM_REFLECT_Y   5
  86.  
  87. enum drm_connector_force {
  88.         DRM_FORCE_UNSPECIFIED,
  89.         DRM_FORCE_OFF,
  90.         DRM_FORCE_ON,         /* force on analog part normally */
  91.         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
  92. };
  93.  
  94. #include <drm/drm_modes.h>
  95.  
  96. enum drm_connector_status {
  97.         connector_status_connected = 1,
  98.         connector_status_disconnected = 2,
  99.         connector_status_unknown = 3,
  100. };
  101.  
  102. enum subpixel_order {
  103.         SubPixelUnknown = 0,
  104.         SubPixelHorizontalRGB,
  105.         SubPixelHorizontalBGR,
  106.         SubPixelVerticalRGB,
  107.         SubPixelVerticalBGR,
  108.         SubPixelNone,
  109. };
  110.  
  111. #define DRM_COLOR_FORMAT_RGB444         (1<<0)
  112. #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
  113. #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
  114. /*
  115.  * Describes a given display (e.g. CRT or flat panel) and its limitations.
  116.  */
  117. struct drm_display_info {
  118.         char name[DRM_DISPLAY_INFO_LEN];
  119.  
  120.         /* Physical size */
  121.         unsigned int width_mm;
  122.         unsigned int height_mm;
  123.  
  124.         /* Clock limits FIXME: storage format */
  125.         unsigned int min_vfreq, max_vfreq;
  126.         unsigned int min_hfreq, max_hfreq;
  127.         unsigned int pixel_clock;
  128.         unsigned int bpc;
  129.  
  130.         enum subpixel_order subpixel_order;
  131.         u32 color_formats;
  132.  
  133.         /* Mask of supported hdmi deep color modes */
  134.         u8 edid_hdmi_dc_modes;
  135.  
  136.         u8 cea_rev;
  137. };
  138.  
  139. struct drm_framebuffer_funcs {
  140.         /* note: use drm_framebuffer_remove() */
  141.         void (*destroy)(struct drm_framebuffer *framebuffer);
  142.         int (*create_handle)(struct drm_framebuffer *fb,
  143.                              struct drm_file *file_priv,
  144.                              unsigned int *handle);
  145.         /**
  146.          * Optinal callback for the dirty fb ioctl.
  147.          *
  148.          * Userspace can notify the driver via this callback
  149.          * that a area of the framebuffer has changed and should
  150.          * be flushed to the display hardware.
  151.          *
  152.          * See documentation in drm_mode.h for the struct
  153.          * drm_mode_fb_dirty_cmd for more information as all
  154.          * the semantics and arguments have a one to one mapping
  155.          * on this function.
  156.          */
  157.         int (*dirty)(struct drm_framebuffer *framebuffer,
  158.                      struct drm_file *file_priv, unsigned flags,
  159.                      unsigned color, struct drm_clip_rect *clips,
  160.                      unsigned num_clips);
  161. };
  162.  
  163. struct drm_framebuffer {
  164.         struct drm_device *dev;
  165.         /*
  166.          * Note that the fb is refcounted for the benefit of driver internals,
  167.          * for example some hw, disabling a CRTC/plane is asynchronous, and
  168.          * scanout does not actually complete until the next vblank.  So some
  169.          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
  170.          * should be deferred.  In cases like this, the driver would like to
  171.          * hold a ref to the fb even though it has already been removed from
  172.          * userspace perspective.
  173.          */
  174.         struct kref refcount;
  175.         /*
  176.          * Place on the dev->mode_config.fb_list, access protected by
  177.          * dev->mode_config.fb_lock.
  178.          */
  179.         struct list_head head;
  180.         struct drm_mode_object base;
  181.         const struct drm_framebuffer_funcs *funcs;
  182.         unsigned int pitches[4];
  183.         unsigned int offsets[4];
  184.         unsigned int width;
  185.         unsigned int height;
  186.         /* depth can be 15 or 16 */
  187.         unsigned int depth;
  188.         int bits_per_pixel;
  189.         int flags;
  190.         uint32_t pixel_format; /* fourcc format */
  191.         struct list_head filp_head;
  192.         /* if you are using the helper */
  193.         void *helper_private;
  194. };
  195.  
  196. struct drm_property_blob {
  197.         struct drm_mode_object base;
  198.         struct list_head head;
  199.         unsigned int length;
  200.         unsigned char data[];
  201. };
  202.  
  203. struct drm_property_enum {
  204.         uint64_t value;
  205.         struct list_head head;
  206.         char name[DRM_PROP_NAME_LEN];
  207. };
  208.  
  209. struct drm_property {
  210.     struct      list_head head;
  211.     struct      drm_mode_object base;
  212.     uint32_t    flags;
  213.     char        name[DRM_PROP_NAME_LEN];
  214.     uint32_t    num_values;
  215.     uint64_t    *values;
  216.         struct drm_device *dev;
  217.  
  218.         struct list_head enum_blob_list;
  219. };
  220.  
  221. void drm_modeset_lock_all(struct drm_device *dev);
  222. void drm_modeset_unlock_all(struct drm_device *dev);
  223. void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
  224.  
  225. struct drm_crtc;
  226. struct drm_connector;
  227. struct drm_encoder;
  228. struct drm_pending_vblank_event;
  229. struct drm_plane;
  230. struct drm_bridge;
  231.  
  232. /**
  233.  * drm_crtc_funcs - control CRTCs for a given device
  234.  * @save: save CRTC state
  235.  * @restore: restore CRTC state
  236.  * @reset: reset CRTC after state has been invalidated (e.g. resume)
  237.  * @cursor_set: setup the cursor
  238.  * @cursor_move: move the cursor
  239.  * @gamma_set: specify color ramp for CRTC
  240.  * @destroy: deinit and free object
  241.  * @set_property: called when a property is changed
  242.  * @set_config: apply a new CRTC configuration
  243.  * @page_flip: initiate a page flip
  244.  *
  245.  * The drm_crtc_funcs structure is the central CRTC management structure
  246.  * in the DRM.  Each CRTC controls one or more connectors (note that the name
  247.  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
  248.  * connectors, not just CRTs).
  249.  *
  250.  * Each driver is responsible for filling out this structure at startup time,
  251.  * in addition to providing other modesetting features, like i2c and DDC
  252.  * bus accessors.
  253.  */
  254. struct drm_crtc_funcs {
  255.         /* Save CRTC state */
  256.         void (*save)(struct drm_crtc *crtc); /* suspend? */
  257.         /* Restore CRTC state */
  258.         void (*restore)(struct drm_crtc *crtc); /* resume? */
  259.         /* Reset CRTC state */
  260.         void (*reset)(struct drm_crtc *crtc);
  261.  
  262.         /* cursor controls */
  263.         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
  264.                           uint32_t handle, uint32_t width, uint32_t height);
  265.         int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
  266.                            uint32_t handle, uint32_t width, uint32_t height,
  267.                            int32_t hot_x, int32_t hot_y);
  268.         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
  269.  
  270.         /* Set gamma on the CRTC */
  271.         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
  272.                           uint32_t start, uint32_t size);
  273.         /* Object destroy routine */
  274.         void (*destroy)(struct drm_crtc *crtc);
  275.  
  276.         int (*set_config)(struct drm_mode_set *set);
  277.  
  278.         /*
  279.          * Flip to the given framebuffer.  This implements the page
  280.          * flip ioctl described in drm_mode.h, specifically, the
  281.          * implementation must return immediately and block all
  282.          * rendering to the current fb until the flip has completed.
  283.          * If userspace set the event flag in the ioctl, the event
  284.          * argument will point to an event to send back when the flip
  285.          * completes, otherwise it will be NULL.
  286.          */
  287.         int (*page_flip)(struct drm_crtc *crtc,
  288.                          struct drm_framebuffer *fb,
  289.                          struct drm_pending_vblank_event *event,
  290.                          uint32_t flags);
  291.  
  292.         int (*set_property)(struct drm_crtc *crtc,
  293.                             struct drm_property *property, uint64_t val);
  294. };
  295.  
  296. /**
  297.  * drm_crtc - central CRTC control structure
  298.  * @dev: parent DRM device
  299.  * @head: list management
  300.  * @mutex: per-CRTC locking
  301.  * @base: base KMS object for ID tracking etc.
  302.  * @primary: primary plane for this CRTC
  303.  * @cursor: cursor plane for this CRTC
  304.  * @enabled: is this CRTC enabled?
  305.  * @mode: current mode timings
  306.  * @hwmode: mode timings as programmed to hw regs
  307.  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
  308.  *    invert the width/height of the crtc.  This is used if the driver
  309.  *    is performing 90 or 270 degree rotated scanout
  310.  * @x: x position on screen
  311.  * @y: y position on screen
  312.  * @funcs: CRTC control functions
  313.  * @gamma_size: size of gamma ramp
  314.  * @gamma_store: gamma ramp values
  315.  * @framedur_ns: precise frame timing
  316.  * @framedur_ns: precise line timing
  317.  * @pixeldur_ns: precise pixel timing
  318.  * @helper_private: mid-layer private data
  319.  * @properties: property tracking for this CRTC
  320.  *
  321.  * Each CRTC may have one or more connectors associated with it.  This structure
  322.  * allows the CRTC to be controlled.
  323.  */
  324. struct drm_crtc {
  325.         struct drm_device *dev;
  326.         struct device_node *port;
  327.         struct list_head head;
  328.  
  329.         /**
  330.          * crtc mutex
  331.          *
  332.          * This provides a read lock for the overall crtc state (mode, dpms
  333.          * state, ...) and a write lock for everything which can be update
  334.          * without a full modeset (fb, cursor data, ...)
  335.          */
  336.         struct drm_modeset_lock mutex;
  337.  
  338.         struct drm_mode_object base;
  339.  
  340.         /* primary and cursor planes for CRTC */
  341.         struct drm_plane *primary;
  342.         struct drm_plane *cursor;
  343.  
  344.         /* position of cursor plane on crtc */
  345.         int cursor_x;
  346.         int cursor_y;
  347.  
  348.         /* Temporary tracking of the old fb while a modeset is ongoing. Used
  349.          * by drm_mode_set_config_internal to implement correct refcounting. */
  350.         struct drm_framebuffer *old_fb;
  351.  
  352.         bool enabled;
  353.  
  354.         /* Requested mode from modesetting. */
  355.         struct drm_display_mode mode;
  356.  
  357.         /* Programmed mode in hw, after adjustments for encoders,
  358.          * crtc, panel scaling etc. Needed for timestamping etc.
  359.          */
  360.         struct drm_display_mode hwmode;
  361.  
  362.         bool invert_dimensions;
  363.  
  364.         int x, y;
  365.         const struct drm_crtc_funcs *funcs;
  366.  
  367.         /* CRTC gamma size for reporting to userspace */
  368.         uint32_t gamma_size;
  369.         uint16_t *gamma_store;
  370.  
  371.         /* Constants needed for precise vblank and swap timestamping. */
  372.         int framedur_ns, linedur_ns, pixeldur_ns;
  373.  
  374.         /* if you are using the helper */
  375.         void *helper_private;
  376.  
  377.         struct drm_object_properties properties;
  378. };
  379.  
  380.  
  381. /**
  382.  * drm_connector_funcs - control connectors on a given device
  383.  * @dpms: set power state (see drm_crtc_funcs above)
  384.  * @save: save connector state
  385.  * @restore: restore connector state
  386.  * @reset: reset connector after state has been invalidated (e.g. resume)
  387.  * @detect: is this connector active?
  388.  * @fill_modes: fill mode list for this connector
  389.  * @set_property: property for this connector may need an update
  390.  * @destroy: make object go away
  391.  * @force: notify the driver that the connector is forced on
  392.  *
  393.  * Each CRTC may have one or more connectors attached to it.  The functions
  394.  * below allow the core DRM code to control connectors, enumerate available modes,
  395.  * etc.
  396.  */
  397. struct drm_connector_funcs {
  398.         void (*dpms)(struct drm_connector *connector, int mode);
  399.         void (*save)(struct drm_connector *connector);
  400.         void (*restore)(struct drm_connector *connector);
  401.         void (*reset)(struct drm_connector *connector);
  402.  
  403.         /* Check to see if anything is attached to the connector.
  404.          * @force is set to false whilst polling, true when checking the
  405.          * connector due to user request. @force can be used by the driver
  406.          * to avoid expensive, destructive operations during automated
  407.          * probing.
  408.          */
  409.         enum drm_connector_status (*detect)(struct drm_connector *connector,
  410.                                             bool force);
  411.         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
  412.         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
  413.                              uint64_t val);
  414.         void (*destroy)(struct drm_connector *connector);
  415.         void (*force)(struct drm_connector *connector);
  416. };
  417.  
  418. /**
  419.  * drm_encoder_funcs - encoder controls
  420.  * @reset: reset state (e.g. at init or resume time)
  421.  * @destroy: cleanup and free associated data
  422.  *
  423.  * Encoders sit between CRTCs and connectors.
  424.  */
  425. struct drm_encoder_funcs {
  426.         void (*reset)(struct drm_encoder *encoder);
  427.         void (*destroy)(struct drm_encoder *encoder);
  428. };
  429.  
  430. #define DRM_CONNECTOR_MAX_ENCODER 3
  431.  
  432. /**
  433.  * drm_encoder - central DRM encoder structure
  434.  * @dev: parent DRM device
  435.  * @head: list management
  436.  * @base: base KMS object
  437.  * @name: encoder name
  438.  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
  439.  * @possible_crtcs: bitmask of potential CRTC bindings
  440.  * @possible_clones: bitmask of potential sibling encoders for cloning
  441.  * @crtc: currently bound CRTC
  442.  * @bridge: bridge associated to the encoder
  443.  * @funcs: control functions
  444.  * @helper_private: mid-layer private data
  445.  *
  446.  * CRTCs drive pixels to encoders, which convert them into signals
  447.  * appropriate for a given connector or set of connectors.
  448.  */
  449. struct drm_encoder {
  450.         struct drm_device *dev;
  451.         struct list_head head;
  452.  
  453.         struct drm_mode_object base;
  454.         char *name;
  455.         int encoder_type;
  456.         uint32_t possible_crtcs;
  457.         uint32_t possible_clones;
  458.  
  459.         struct drm_crtc *crtc;
  460.         struct drm_bridge *bridge;
  461.         const struct drm_encoder_funcs *funcs;
  462.         void *helper_private;
  463. };
  464.  
  465. /* should we poll this connector for connects and disconnects */
  466. /* hot plug detectable */
  467. #define DRM_CONNECTOR_POLL_HPD (1 << 0)
  468. /* poll for connections */
  469. #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
  470. /* can cleanly poll for disconnections without flickering the screen */
  471. /* DACs should rarely do this without a lot of testing */
  472. #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
  473.  
  474. #define MAX_ELD_BYTES   128
  475.  
  476. /**
  477.  * drm_connector - central DRM connector control structure
  478.  * @dev: parent DRM device
  479.  * @kdev: kernel device for sysfs attributes
  480.  * @attr: sysfs attributes
  481.  * @head: list management
  482.  * @base: base KMS object
  483.  * @name: connector name
  484.  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
  485.  * @connector_type_id: index into connector type enum
  486.  * @interlace_allowed: can this connector handle interlaced modes?
  487.  * @doublescan_allowed: can this connector handle doublescan?
  488.  * @modes: modes available on this connector (from fill_modes() + user)
  489.  * @status: one of the drm_connector_status enums (connected, not, or unknown)
  490.  * @probed_modes: list of modes derived directly from the display
  491.  * @display_info: information about attached display (e.g. from EDID)
  492.  * @funcs: connector control functions
  493.  * @edid_blob_ptr: DRM property containing EDID if present
  494.  * @properties: property tracking for this connector
  495.  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
  496.  * @dpms: current dpms state
  497.  * @helper_private: mid-layer private data
  498.  * @force: a %DRM_FORCE_<foo> state for forced mode sets
  499.  * @encoder_ids: valid encoders for this connector
  500.  * @encoder: encoder driving this connector, if any
  501.  * @eld: EDID-like data, if present
  502.  * @dvi_dual: dual link DVI, if found
  503.  * @max_tmds_clock: max clock rate, if found
  504.  * @latency_present: AV delay info from ELD, if found
  505.  * @video_latency: video latency info from ELD, if found
  506.  * @audio_latency: audio latency info from ELD, if found
  507.  * @null_edid_counter: track sinks that give us all zeros for the EDID
  508.  *
  509.  * Each connector may be connected to one or more CRTCs, or may be clonable by
  510.  * another connector if they can share a CRTC.  Each connector also has a specific
  511.  * position in the broader display (referred to as a 'screen' though it could
  512.  * span multiple monitors).
  513.  */
  514. struct drm_connector {
  515.         struct drm_device *dev;
  516.         struct device *kdev;
  517.         struct device_attribute *attr;
  518.         struct list_head head;
  519.  
  520.         struct drm_mode_object base;
  521.  
  522.         char *name;
  523.         int connector_type;
  524.         int connector_type_id;
  525.         bool interlace_allowed;
  526.         bool doublescan_allowed;
  527.         bool stereo_allowed;
  528.         struct list_head modes; /* list of modes on this connector */
  529.  
  530.         enum drm_connector_status status;
  531.  
  532.         /* these are modes added by probing with DDC or the BIOS */
  533.         struct list_head probed_modes;
  534.  
  535.         struct drm_display_info display_info;
  536.         const struct drm_connector_funcs *funcs;
  537.  
  538.         struct drm_property_blob *edid_blob_ptr;
  539.         struct drm_object_properties properties;
  540.  
  541.         struct drm_property_blob *path_blob_ptr;
  542.  
  543.         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
  544.  
  545.         /* requested DPMS state */
  546.         int dpms;
  547.  
  548.         void *helper_private;
  549.  
  550.         /* forced on connector */
  551.         enum drm_connector_force force;
  552.         bool override_edid;
  553.         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
  554.         struct drm_encoder *encoder; /* currently active encoder */
  555.  
  556.         /* EDID bits */
  557.         uint8_t eld[MAX_ELD_BYTES];
  558.         bool dvi_dual;
  559.         int max_tmds_clock;     /* in MHz */
  560.         bool latency_present[2];
  561.         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
  562.         int audio_latency[2];
  563.         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
  564.         unsigned bad_edid_counter;
  565.  
  566.         struct dentry *debugfs_entry;
  567. };
  568.  
  569. /**
  570.  * drm_plane_funcs - driver plane control functions
  571.  * @update_plane: update the plane configuration
  572.  * @disable_plane: shut down the plane
  573.  * @destroy: clean up plane resources
  574.  * @set_property: called when a property is changed
  575.  */
  576. struct drm_plane_funcs {
  577.         int (*update_plane)(struct drm_plane *plane,
  578.                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
  579.                             int crtc_x, int crtc_y,
  580.                             unsigned int crtc_w, unsigned int crtc_h,
  581.                             uint32_t src_x, uint32_t src_y,
  582.                             uint32_t src_w, uint32_t src_h);
  583.         int (*disable_plane)(struct drm_plane *plane);
  584.         void (*destroy)(struct drm_plane *plane);
  585.  
  586.         int (*set_property)(struct drm_plane *plane,
  587.                             struct drm_property *property, uint64_t val);
  588. };
  589.  
  590. enum drm_plane_type {
  591.         DRM_PLANE_TYPE_OVERLAY,
  592.         DRM_PLANE_TYPE_PRIMARY,
  593.         DRM_PLANE_TYPE_CURSOR,
  594. };
  595.  
  596. /**
  597.  * drm_plane - central DRM plane control structure
  598.  * @dev: DRM device this plane belongs to
  599.  * @head: for list management
  600.  * @base: base mode object
  601.  * @possible_crtcs: pipes this plane can be bound to
  602.  * @format_types: array of formats supported by this plane
  603.  * @format_count: number of formats supported
  604.  * @crtc: currently bound CRTC
  605.  * @fb: currently bound fb
  606.  * @funcs: helper functions
  607.  * @properties: property tracking for this plane
  608.  * @type: type of plane (overlay, primary, cursor)
  609.  */
  610. struct drm_plane {
  611.         struct drm_device *dev;
  612.         struct list_head head;
  613.  
  614.         struct drm_mode_object base;
  615.  
  616.         uint32_t possible_crtcs;
  617.         uint32_t *format_types;
  618.         uint32_t format_count;
  619.  
  620.         struct drm_crtc *crtc;
  621.         struct drm_framebuffer *fb;
  622.  
  623.         const struct drm_plane_funcs *funcs;
  624.  
  625.         struct drm_object_properties properties;
  626.  
  627.         enum drm_plane_type type;
  628. };
  629.  
  630. /**
  631.  * drm_bridge_funcs - drm_bridge control functions
  632.  * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
  633.  * @disable: Called right before encoder prepare, disables the bridge
  634.  * @post_disable: Called right after encoder prepare, for lockstepped disable
  635.  * @mode_set: Set this mode to the bridge
  636.  * @pre_enable: Called right before encoder commit, for lockstepped commit
  637.  * @enable: Called right after encoder commit, enables the bridge
  638.  * @destroy: make object go away
  639.  */
  640. struct drm_bridge_funcs {
  641.         bool (*mode_fixup)(struct drm_bridge *bridge,
  642.                            const struct drm_display_mode *mode,
  643.                            struct drm_display_mode *adjusted_mode);
  644.         void (*disable)(struct drm_bridge *bridge);
  645.         void (*post_disable)(struct drm_bridge *bridge);
  646.         void (*mode_set)(struct drm_bridge *bridge,
  647.                          struct drm_display_mode *mode,
  648.                          struct drm_display_mode *adjusted_mode);
  649.         void (*pre_enable)(struct drm_bridge *bridge);
  650.         void (*enable)(struct drm_bridge *bridge);
  651.         void (*destroy)(struct drm_bridge *bridge);
  652. };
  653.  
  654. /**
  655.  * drm_bridge - central DRM bridge control structure
  656.  * @dev: DRM device this bridge belongs to
  657.  * @head: list management
  658.  * @base: base mode object
  659.  * @funcs: control functions
  660.  * @driver_private: pointer to the bridge driver's internal context
  661.  */
  662. struct drm_bridge {
  663.         struct drm_device *dev;
  664.         struct list_head head;
  665.  
  666.         struct drm_mode_object base;
  667.  
  668.         const struct drm_bridge_funcs *funcs;
  669.         void *driver_private;
  670. };
  671.  
  672. /**
  673.  * drm_mode_set - new values for a CRTC config change
  674.  * @head: list management
  675.  * @fb: framebuffer to use for new config
  676.  * @crtc: CRTC whose configuration we're about to change
  677.  * @mode: mode timings to use
  678.  * @x: position of this CRTC relative to @fb
  679.  * @y: position of this CRTC relative to @fb
  680.  * @connectors: array of connectors to drive with this CRTC if possible
  681.  * @num_connectors: size of @connectors array
  682.  *
  683.  * Represents a single crtc the connectors that it drives with what mode
  684.  * and from which framebuffer it scans out from.
  685.  *
  686.  * This is used to set modes.
  687.  */
  688. struct drm_mode_set {
  689.         struct drm_framebuffer *fb;
  690.         struct drm_crtc *crtc;
  691.         struct drm_display_mode *mode;
  692.  
  693.         uint32_t x;
  694.         uint32_t y;
  695.  
  696.         struct drm_connector **connectors;
  697.         size_t num_connectors;
  698. };
  699.  
  700. /**
  701.  * struct drm_mode_config_funcs - basic driver provided mode setting functions
  702.  * @fb_create: create a new framebuffer object
  703.  * @output_poll_changed: function to handle output configuration changes
  704.  *
  705.  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
  706.  * involve drivers.
  707.  */
  708. struct drm_mode_config_funcs {
  709.         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
  710.                                              struct drm_file *file_priv,
  711.                                              struct drm_mode_fb_cmd2 *mode_cmd);
  712.         void (*output_poll_changed)(struct drm_device *dev);
  713. };
  714.  
  715. /**
  716.  * drm_mode_group - group of mode setting resources for potential sub-grouping
  717.  * @num_crtcs: CRTC count
  718.  * @num_encoders: encoder count
  719.  * @num_connectors: connector count
  720.  * @id_list: list of KMS object IDs in this group
  721.  *
  722.  * Currently this simply tracks the global mode setting state.  But in the
  723.  * future it could allow groups of objects to be set aside into independent
  724.  * control groups for use by different user level processes (e.g. two X servers
  725.  * running simultaneously on different heads, each with their own mode
  726.  * configuration and freedom of mode setting).
  727.  */
  728. struct drm_mode_group {
  729.         uint32_t num_crtcs;
  730.         uint32_t num_encoders;
  731.         uint32_t num_connectors;
  732.         uint32_t num_bridges;
  733.  
  734.         /* list of object IDs for this group */
  735.         uint32_t *id_list;
  736. };
  737.  
  738. /**
  739.  * drm_mode_config - Mode configuration control structure
  740.  * @mutex: mutex protecting KMS related lists and structures
  741.  * @idr_mutex: mutex for KMS ID allocation and management
  742.  * @crtc_idr: main KMS ID tracking object
  743.  * @num_fb: number of fbs available
  744.  * @fb_list: list of framebuffers available
  745.  * @num_connector: number of connectors on this device
  746.  * @connector_list: list of connector objects
  747.  * @num_bridge: number of bridges on this device
  748.  * @bridge_list: list of bridge objects
  749.  * @num_encoder: number of encoders on this device
  750.  * @encoder_list: list of encoder objects
  751.  * @num_crtc: number of CRTCs on this device
  752.  * @crtc_list: list of CRTC objects
  753.  * @min_width: minimum pixel width on this device
  754.  * @min_height: minimum pixel height on this device
  755.  * @max_width: maximum pixel width on this device
  756.  * @max_height: maximum pixel height on this device
  757.  * @funcs: core driver provided mode setting functions
  758.  * @fb_base: base address of the framebuffer
  759.  * @poll_enabled: track polling status for this device
  760.  * @output_poll_work: delayed work for polling in process context
  761.  * @*_property: core property tracking
  762.  *
  763.  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
  764.  * enumerated by the driver are added here, as are global properties.  Some
  765.  * global restrictions are also here, e.g. dimension restrictions.
  766.  */
  767. struct drm_mode_config {
  768.         struct mutex mutex; /* protects configuration (mode lists etc.) */
  769.         struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */
  770.         struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */
  771.         struct mutex idr_mutex; /* for IDR management */
  772.     struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
  773.         /* this is limited to one for now */
  774.  
  775.  
  776.         /**
  777.          * fb_lock - mutex to protect fb state
  778.          *
  779.          * Besides the global fb list his also protects the fbs list in the
  780.          * file_priv
  781.          */
  782.         struct mutex fb_lock;
  783.         int num_fb;
  784.         struct list_head fb_list;
  785.  
  786.         int num_connector;
  787.         struct list_head connector_list;
  788.         int num_bridge;
  789.         struct list_head bridge_list;
  790.         int num_encoder;
  791.         struct list_head encoder_list;
  792.  
  793.         /*
  794.          * Track # of overlay planes separately from # of total planes.  By
  795.          * default we only advertise overlay planes to userspace; if userspace
  796.          * sets the "universal plane" capability bit, we'll go ahead and
  797.          * expose all planes.
  798.          */
  799.         int num_overlay_plane;
  800.         int num_total_plane;
  801.         struct list_head plane_list;
  802.  
  803.         int num_crtc;
  804.         struct list_head crtc_list;
  805.  
  806.         struct list_head property_list;
  807.  
  808.         int min_width, min_height;
  809.         int max_width, max_height;
  810.         const struct drm_mode_config_funcs *funcs;
  811.         resource_size_t fb_base;
  812.  
  813.         /* output poll support */
  814.         bool poll_enabled;
  815.         bool poll_running;
  816.         struct delayed_work output_poll_work;
  817.  
  818.         /* pointers to standard properties */
  819.         struct list_head property_blob_list;
  820.         struct drm_property *edid_property;
  821.         struct drm_property *dpms_property;
  822.         struct drm_property *path_property;
  823.         struct drm_property *plane_type_property;
  824.  
  825.         /* DVI-I properties */
  826.         struct drm_property *dvi_i_subconnector_property;
  827.         struct drm_property *dvi_i_select_subconnector_property;
  828.  
  829.         /* TV properties */
  830.         struct drm_property *tv_subconnector_property;
  831.         struct drm_property *tv_select_subconnector_property;
  832.         struct drm_property *tv_mode_property;
  833.         struct drm_property *tv_left_margin_property;
  834.         struct drm_property *tv_right_margin_property;
  835.         struct drm_property *tv_top_margin_property;
  836.         struct drm_property *tv_bottom_margin_property;
  837.         struct drm_property *tv_brightness_property;
  838.         struct drm_property *tv_contrast_property;
  839.         struct drm_property *tv_flicker_reduction_property;
  840.         struct drm_property *tv_overscan_property;
  841.         struct drm_property *tv_saturation_property;
  842.         struct drm_property *tv_hue_property;
  843.  
  844.         /* Optional properties */
  845.         struct drm_property *scaling_mode_property;
  846.         struct drm_property *aspect_ratio_property;
  847.         struct drm_property *dirty_info_property;
  848.  
  849.         /* dumb ioctl parameters */
  850.         uint32_t preferred_depth, prefer_shadow;
  851.  
  852.         /* whether async page flip is supported or not */
  853.         bool async_page_flip;
  854.  
  855.         /* cursor size */
  856.         uint32_t cursor_width, cursor_height;
  857. };
  858.  
  859. #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
  860. #define obj_to_connector(x) container_of(x, struct drm_connector, base)
  861. #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
  862. #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
  863. #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
  864. #define obj_to_property(x) container_of(x, struct drm_property, base)
  865. #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
  866. #define obj_to_plane(x) container_of(x, struct drm_plane, base)
  867.  
  868. struct drm_prop_enum_list {
  869.         int type;
  870.         char *name;
  871. };
  872.  
  873. extern int drm_crtc_init_with_planes(struct drm_device *dev,
  874.                                      struct drm_crtc *crtc,
  875.                                      struct drm_plane *primary,
  876.                                      struct drm_plane *cursor,
  877.                                      const struct drm_crtc_funcs *funcs);
  878. extern int drm_crtc_init(struct drm_device *dev,
  879.                           struct drm_crtc *crtc,
  880.                           const struct drm_crtc_funcs *funcs);
  881. extern void drm_crtc_cleanup(struct drm_crtc *crtc);
  882. extern unsigned int drm_crtc_index(struct drm_crtc *crtc);
  883.  
  884. /**
  885.  * drm_crtc_mask - find the mask of a registered CRTC
  886.  * @crtc: CRTC to find mask for
  887.  *
  888.  * Given a registered CRTC, return the mask bit of that CRTC for an
  889.  * encoder's possible_crtcs field.
  890.  */
  891. static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
  892. {
  893.         return 1 << drm_crtc_index(crtc);
  894. }
  895.  
  896. extern void drm_connector_ida_init(void);
  897. extern void drm_connector_ida_destroy(void);
  898. extern int drm_connector_init(struct drm_device *dev,
  899.                             struct drm_connector *connector,
  900.                             const struct drm_connector_funcs *funcs,
  901.                             int connector_type);
  902. int drm_connector_register(struct drm_connector *connector);
  903. void drm_connector_unregister(struct drm_connector *connector);
  904.  
  905. extern void drm_connector_cleanup(struct drm_connector *connector);
  906. /* helper to unplug all connectors from sysfs for device */
  907. extern void drm_connector_unplug_all(struct drm_device *dev);
  908.  
  909. extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
  910.                            const struct drm_bridge_funcs *funcs);
  911. extern void drm_bridge_cleanup(struct drm_bridge *bridge);
  912.  
  913. extern int drm_encoder_init(struct drm_device *dev,
  914.                              struct drm_encoder *encoder,
  915.                              const struct drm_encoder_funcs *funcs,
  916.                              int encoder_type);
  917.  
  918. /**
  919.  * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
  920.  * @encoder: encoder to test
  921.  * @crtc: crtc to test
  922.  *
  923.  * Return false if @encoder can't be driven by @crtc, true otherwise.
  924.  */
  925. static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
  926.                                        struct drm_crtc *crtc)
  927. {
  928.         return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
  929. }
  930.  
  931. extern int drm_universal_plane_init(struct drm_device *dev,
  932.                                     struct drm_plane *plane,
  933.                                     unsigned long possible_crtcs,
  934.                                     const struct drm_plane_funcs *funcs,
  935.                                     const uint32_t *formats,
  936.                                     uint32_t format_count,
  937.                                     enum drm_plane_type type);
  938. extern int drm_plane_init(struct drm_device *dev,
  939.                           struct drm_plane *plane,
  940.                           unsigned long possible_crtcs,
  941.                           const struct drm_plane_funcs *funcs,
  942.                           const uint32_t *formats, uint32_t format_count,
  943.                           bool is_primary);
  944. extern void drm_plane_cleanup(struct drm_plane *plane);
  945. extern void drm_plane_force_disable(struct drm_plane *plane);
  946. extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
  947.                                    int x, int y,
  948.                                    const struct drm_display_mode *mode,
  949.                                    const struct drm_framebuffer *fb);
  950.  
  951. extern void drm_encoder_cleanup(struct drm_encoder *encoder);
  952.  
  953. extern const char *drm_get_connector_status_name(enum drm_connector_status status);
  954. extern const char *drm_get_subpixel_order_name(enum subpixel_order order);
  955. extern const char *drm_get_dpms_name(int val);
  956. extern const char *drm_get_dvi_i_subconnector_name(int val);
  957. extern const char *drm_get_dvi_i_select_name(int val);
  958. extern const char *drm_get_tv_subconnector_name(int val);
  959. extern const char *drm_get_tv_select_name(int val);
  960. extern void drm_fb_release(struct drm_file *file_priv);
  961. extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
  962. extern void drm_mode_group_destroy(struct drm_mode_group *group);
  963. extern void drm_reinit_primary_mode_group(struct drm_device *dev);
  964. extern bool drm_probe_ddc(struct i2c_adapter *adapter);
  965. extern struct edid *drm_get_edid(struct drm_connector *connector,
  966.                                  struct i2c_adapter *adapter);
  967. extern struct edid *drm_edid_duplicate(const struct edid *edid);
  968. extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
  969. extern void drm_mode_config_init(struct drm_device *dev);
  970. extern void drm_mode_config_reset(struct drm_device *dev);
  971. extern void drm_mode_config_cleanup(struct drm_device *dev);
  972.  
  973. extern int drm_mode_connector_set_path_property(struct drm_connector *connector,
  974.                                                 char *path);
  975. extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
  976.                        struct edid *edid);
  977.  
  978. static inline bool drm_property_type_is(struct drm_property *property,
  979.                 uint32_t type)
  980. {
  981.         /* instanceof for props.. handles extended type vs original types: */
  982.         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
  983.                 return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
  984.         return property->flags & type;
  985. }
  986.  
  987. static inline bool drm_property_type_valid(struct drm_property *property)
  988. {
  989.         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
  990.                 return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
  991.         return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
  992. }
  993.  
  994. extern int drm_object_property_set_value(struct drm_mode_object *obj,
  995.                                          struct drm_property *property,
  996.                                          uint64_t val);
  997. extern int drm_object_property_get_value(struct drm_mode_object *obj,
  998.                                          struct drm_property *property,
  999.                                          uint64_t *value);
  1000. extern int drm_framebuffer_init(struct drm_device *dev,
  1001.                                 struct drm_framebuffer *fb,
  1002.                                 const struct drm_framebuffer_funcs *funcs);
  1003. extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
  1004.                                                       uint32_t id);
  1005. extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
  1006. extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
  1007. extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
  1008. extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
  1009. extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
  1010.  
  1011. extern void drm_object_attach_property(struct drm_mode_object *obj,
  1012.                                        struct drm_property *property,
  1013.                                        uint64_t init_val);
  1014. extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
  1015.                                                 const char *name, int num_values);
  1016. extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
  1017.                                          const char *name,
  1018.                                          const struct drm_prop_enum_list *props,
  1019.                                          int num_values);
  1020. struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
  1021.                                          int flags, const char *name,
  1022.                                          const struct drm_prop_enum_list *props,
  1023.                                          int num_props,
  1024.                                          uint64_t supported_bits);
  1025. struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
  1026.                                          const char *name,
  1027.                                          uint64_t min, uint64_t max);
  1028. struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
  1029.                                          int flags, const char *name,
  1030.                                          int64_t min, int64_t max);
  1031. struct drm_property *drm_property_create_object(struct drm_device *dev,
  1032.                                          int flags, const char *name, uint32_t type);
  1033. extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
  1034. extern int drm_property_add_enum(struct drm_property *property, int index,
  1035.                                  uint64_t value, const char *name);
  1036. extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
  1037. extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
  1038.                                      char *formats[]);
  1039. extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
  1040. extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
  1041. extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
  1042.  
  1043. extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
  1044.                                              struct drm_encoder *encoder);
  1045. extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
  1046.                                          int gamma_size);
  1047. extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
  1048.                 uint32_t id, uint32_t type);
  1049.  
  1050. /* IOCTLs */
  1051. extern int drm_mode_getresources(struct drm_device *dev,
  1052.                                  void *data, struct drm_file *file_priv);
  1053. extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
  1054.                                    struct drm_file *file_priv);
  1055. extern int drm_mode_getcrtc(struct drm_device *dev,
  1056.                             void *data, struct drm_file *file_priv);
  1057. extern int drm_mode_getconnector(struct drm_device *dev,
  1058.                               void *data, struct drm_file *file_priv);
  1059. extern int drm_mode_set_config_internal(struct drm_mode_set *set);
  1060. extern int drm_mode_setcrtc(struct drm_device *dev,
  1061.                             void *data, struct drm_file *file_priv);
  1062. extern int drm_mode_getplane(struct drm_device *dev,
  1063.                                void *data, struct drm_file *file_priv);
  1064. extern int drm_mode_setplane(struct drm_device *dev,
  1065.                                void *data, struct drm_file *file_priv);
  1066. extern int drm_mode_cursor_ioctl(struct drm_device *dev,
  1067.                                 void *data, struct drm_file *file_priv);
  1068. extern int drm_mode_cursor2_ioctl(struct drm_device *dev,
  1069.                                 void *data, struct drm_file *file_priv);
  1070. extern int drm_mode_addfb(struct drm_device *dev,
  1071.                           void *data, struct drm_file *file_priv);
  1072. extern int drm_mode_addfb2(struct drm_device *dev,
  1073.                            void *data, struct drm_file *file_priv);
  1074. extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
  1075. extern int drm_mode_rmfb(struct drm_device *dev,
  1076.                          void *data, struct drm_file *file_priv);
  1077. extern int drm_mode_getfb(struct drm_device *dev,
  1078.                           void *data, struct drm_file *file_priv);
  1079. extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
  1080.                                   void *data, struct drm_file *file_priv);
  1081.  
  1082. extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
  1083.                                       void *data, struct drm_file *file_priv);
  1084. extern int drm_mode_getblob_ioctl(struct drm_device *dev,
  1085.                                   void *data, struct drm_file *file_priv);
  1086. extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
  1087.                                               void *data, struct drm_file *file_priv);
  1088. extern int drm_mode_getencoder(struct drm_device *dev,
  1089.                                void *data, struct drm_file *file_priv);
  1090. extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
  1091.                                     void *data, struct drm_file *file_priv);
  1092. extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
  1093.                                     void *data, struct drm_file *file_priv);
  1094. extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
  1095. extern enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code);
  1096. extern bool drm_detect_hdmi_monitor(struct edid *edid);
  1097. extern bool drm_detect_monitor_audio(struct edid *edid);
  1098. extern bool drm_rgb_quant_range_selectable(struct edid *edid);
  1099. extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
  1100.                                     void *data, struct drm_file *file_priv);
  1101. extern int drm_add_modes_noedid(struct drm_connector *connector,
  1102.                                 int hdisplay, int vdisplay);
  1103. extern void drm_set_preferred_mode(struct drm_connector *connector,
  1104.                                    int hpref, int vpref);
  1105.  
  1106. extern int drm_edid_header_is_valid(const u8 *raw_edid);
  1107. extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
  1108. extern bool drm_edid_is_valid(struct edid *edid);
  1109. struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
  1110.                                            int hsize, int vsize, int fresh,
  1111.                                            bool rb);
  1112.  
  1113. extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
  1114.                                       void *data, struct drm_file *file_priv);
  1115. extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
  1116.                                     void *data, struct drm_file *file_priv);
  1117. extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
  1118.                                       void *data, struct drm_file *file_priv);
  1119. extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
  1120.                                              struct drm_file *file_priv);
  1121. extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
  1122.                                            struct drm_file *file_priv);
  1123.  
  1124. extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
  1125.                                  int *bpp);
  1126. extern int drm_format_num_planes(uint32_t format);
  1127. extern int drm_format_plane_cpp(uint32_t format, int plane);
  1128. extern int drm_format_horz_chroma_subsampling(uint32_t format);
  1129. extern int drm_format_vert_chroma_subsampling(uint32_t format);
  1130. extern const char *drm_get_format_name(uint32_t format);
  1131. extern struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
  1132.                                                               unsigned int supported_rotations);
  1133. extern unsigned int drm_rotation_simplify(unsigned int rotation,
  1134.                                           unsigned int supported_rotations);
  1135.  
  1136. /* Helpers */
  1137.  
  1138. static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
  1139.                 uint32_t id)
  1140. {
  1141.         struct drm_mode_object *mo;
  1142.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE);
  1143.         return mo ? obj_to_plane(mo) : NULL;
  1144. }
  1145.  
  1146. static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
  1147.         uint32_t id)
  1148. {
  1149.         struct drm_mode_object *mo;
  1150.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC);
  1151.         return mo ? obj_to_crtc(mo) : NULL;
  1152. }
  1153.  
  1154. static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
  1155.         uint32_t id)
  1156. {
  1157.         struct drm_mode_object *mo;
  1158.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  1159.         return mo ? obj_to_encoder(mo) : NULL;
  1160. }
  1161.  
  1162. static inline struct drm_connector *drm_connector_find(struct drm_device *dev,
  1163.                 uint32_t id)
  1164. {
  1165.         struct drm_mode_object *mo;
  1166.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR);
  1167.         return mo ? obj_to_connector(mo) : NULL;
  1168. }
  1169.  
  1170. static inline struct drm_property *drm_property_find(struct drm_device *dev,
  1171.                 uint32_t id)
  1172. {
  1173.         struct drm_mode_object *mo;
  1174.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
  1175.         return mo ? obj_to_property(mo) : NULL;
  1176. }
  1177.  
  1178. static inline struct drm_property_blob *
  1179. drm_property_blob_find(struct drm_device *dev, uint32_t id)
  1180. {
  1181.         struct drm_mode_object *mo;
  1182.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
  1183.         return mo ? obj_to_blob(mo) : NULL;
  1184. }
  1185.  
  1186. /* Plane list iterator for legacy (overlay only) planes. */
  1187. #define drm_for_each_legacy_plane(plane, planelist) \
  1188.         list_for_each_entry(plane, planelist, head) \
  1189.                 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
  1190.  
  1191. #endif /* __DRM_CRTC_H__ */
  1192.