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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 <uapi/drm/drm_mode.h>
  35. #include <uapi/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. struct fence;
  46.  
  47. #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  48. #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  49. #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  50. #define DRM_MODE_OBJECT_MODE 0xdededede
  51. #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  52. #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  53. #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  54. #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  55. #define DRM_MODE_OBJECT_BRIDGE 0xbdbdbdbd
  56. #define DRM_MODE_OBJECT_ANY 0
  57.  
  58. struct drm_mode_object {
  59.         uint32_t id;
  60.         uint32_t type;
  61.         struct drm_object_properties *properties;
  62. };
  63.  
  64. #define DRM_OBJECT_MAX_PROPERTY 24
  65. struct drm_object_properties {
  66.         int count;
  67.         uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
  68.         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
  69. };
  70.  
  71. static inline int64_t U642I64(uint64_t val)
  72. {
  73.         return (int64_t)*((int64_t *)&val);
  74. }
  75. static inline uint64_t I642U64(int64_t val)
  76. {
  77.         return (uint64_t)*((uint64_t *)&val);
  78. }
  79.  
  80. /* rotation property bits */
  81. #define DRM_ROTATE_0    0
  82. #define DRM_ROTATE_90   1
  83. #define DRM_ROTATE_180  2
  84. #define DRM_ROTATE_270  3
  85. #define DRM_REFLECT_X   4
  86. #define DRM_REFLECT_Y   5
  87.  
  88. enum drm_connector_force {
  89.         DRM_FORCE_UNSPECIFIED,
  90.         DRM_FORCE_OFF,
  91.         DRM_FORCE_ON,         /* force on analog part normally */
  92.         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
  93. };
  94.  
  95. #include <drm/drm_modes.h>
  96.  
  97. enum drm_connector_status {
  98.         connector_status_connected = 1,
  99.         connector_status_disconnected = 2,
  100.         connector_status_unknown = 3,
  101. };
  102.  
  103. enum subpixel_order {
  104.         SubPixelUnknown = 0,
  105.         SubPixelHorizontalRGB,
  106.         SubPixelHorizontalBGR,
  107.         SubPixelVerticalRGB,
  108.         SubPixelVerticalBGR,
  109.         SubPixelNone,
  110. };
  111.  
  112. #define DRM_COLOR_FORMAT_RGB444         (1<<0)
  113. #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
  114. #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
  115. /*
  116.  * Describes a given display (e.g. CRT or flat panel) and its limitations.
  117.  */
  118. struct drm_display_info {
  119.         char name[DRM_DISPLAY_INFO_LEN];
  120.  
  121.         /* Physical size */
  122.         unsigned int width_mm;
  123.         unsigned int height_mm;
  124.  
  125.         /* Clock limits FIXME: storage format */
  126.         unsigned int min_vfreq, max_vfreq;
  127.         unsigned int min_hfreq, max_hfreq;
  128.         unsigned int pixel_clock;
  129.         unsigned int bpc;
  130.  
  131.         enum subpixel_order subpixel_order;
  132.         u32 color_formats;
  133.  
  134.         /* Mask of supported hdmi deep color modes */
  135.         u8 edid_hdmi_dc_modes;
  136.  
  137.         u8 cea_rev;
  138. };
  139.  
  140. /* data corresponds to displayid vend/prod/serial */
  141. struct drm_tile_group {
  142.         struct kref refcount;
  143.         struct drm_device *dev;
  144.         int id;
  145.         u8 group_data[8];
  146. };
  147.  
  148. struct drm_framebuffer_funcs {
  149.         /* note: use drm_framebuffer_remove() */
  150.         void (*destroy)(struct drm_framebuffer *framebuffer);
  151.         int (*create_handle)(struct drm_framebuffer *fb,
  152.                              struct drm_file *file_priv,
  153.                              unsigned int *handle);
  154.         /*
  155.          * Optional callback for the dirty fb ioctl.
  156.          *
  157.          * Userspace can notify the driver via this callback
  158.          * that a area of the framebuffer has changed and should
  159.          * be flushed to the display hardware.
  160.          *
  161.          * See documentation in drm_mode.h for the struct
  162.          * drm_mode_fb_dirty_cmd for more information as all
  163.          * the semantics and arguments have a one to one mapping
  164.          * on this function.
  165.          */
  166.         int (*dirty)(struct drm_framebuffer *framebuffer,
  167.                      struct drm_file *file_priv, unsigned flags,
  168.                      unsigned color, struct drm_clip_rect *clips,
  169.                      unsigned num_clips);
  170. };
  171.  
  172. struct drm_framebuffer {
  173.         struct drm_device *dev;
  174.         /*
  175.          * Note that the fb is refcounted for the benefit of driver internals,
  176.          * for example some hw, disabling a CRTC/plane is asynchronous, and
  177.          * scanout does not actually complete until the next vblank.  So some
  178.          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
  179.          * should be deferred.  In cases like this, the driver would like to
  180.          * hold a ref to the fb even though it has already been removed from
  181.          * userspace perspective.
  182.          */
  183.         struct kref refcount;
  184.         /*
  185.          * Place on the dev->mode_config.fb_list, access protected by
  186.          * dev->mode_config.fb_lock.
  187.          */
  188.         struct list_head head;
  189.         struct drm_mode_object base;
  190.         const struct drm_framebuffer_funcs *funcs;
  191.         unsigned int pitches[4];
  192.         unsigned int offsets[4];
  193.         unsigned int width;
  194.         unsigned int height;
  195.         /* depth can be 15 or 16 */
  196.         unsigned int depth;
  197.         int bits_per_pixel;
  198.         int flags;
  199.         uint32_t pixel_format; /* fourcc format */
  200.         struct list_head filp_head;
  201.         /* if you are using the helper */
  202.         void *helper_private;
  203. };
  204.  
  205. struct drm_property_blob {
  206.         struct drm_mode_object base;
  207.         struct list_head head;
  208.         size_t length;
  209.         unsigned char data[];
  210. };
  211.  
  212. struct drm_property_enum {
  213.         uint64_t value;
  214.         struct list_head head;
  215.         char name[DRM_PROP_NAME_LEN];
  216. };
  217.  
  218. struct drm_property {
  219.     struct      list_head head;
  220.     struct      drm_mode_object base;
  221.     uint32_t    flags;
  222.     char        name[DRM_PROP_NAME_LEN];
  223.     uint32_t    num_values;
  224.     uint64_t    *values;
  225.         struct drm_device *dev;
  226.  
  227.         struct list_head enum_list;
  228. };
  229.  
  230. struct drm_crtc;
  231. struct drm_connector;
  232. struct drm_encoder;
  233. struct drm_pending_vblank_event;
  234. struct drm_plane;
  235. struct drm_bridge;
  236. struct drm_atomic_state;
  237.  
  238. /**
  239.  * struct drm_crtc_state - mutable CRTC state
  240.  * @enable: whether the CRTC should be enabled, gates all other state
  241.  * @mode_changed: for use by helpers and drivers when computing state updates
  242.  * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes
  243.  * @last_vblank_count: for helpers and drivers to capture the vblank of the
  244.  *      update to ensure framebuffer cleanup isn't done too early
  245.  * @planes_changed: for use by helpers and drivers when computing state updates
  246.  * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings
  247.  * @mode: current mode timings
  248.  * @event: optional pointer to a DRM event to signal upon completion of the
  249.  *      state update
  250.  * @state: backpointer to global drm_atomic_state
  251.  */
  252. struct drm_crtc_state {
  253.         bool enable;
  254.  
  255.         /* computed state bits used by helpers and drivers */
  256.         bool planes_changed : 1;
  257.         bool mode_changed : 1;
  258.  
  259.         /* attached planes bitmask:
  260.          * WARNING: transitional helpers do not maintain plane_mask so
  261.          * drivers not converted over to atomic helpers should not rely
  262.          * on plane_mask being accurate!
  263.          */
  264.         u32 plane_mask;
  265.  
  266.         /* last_vblank_count: for vblank waits before cleanup */
  267.         u32 last_vblank_count;
  268.  
  269.         /* adjusted_mode: for use by helpers and drivers */
  270.         struct drm_display_mode adjusted_mode;
  271.  
  272.         struct drm_display_mode mode;
  273.  
  274.         struct drm_pending_vblank_event *event;
  275.  
  276.         struct drm_atomic_state *state;
  277. };
  278.  
  279. /**
  280.  * struct drm_crtc_funcs - control CRTCs for a given device
  281.  * @save: save CRTC state
  282.  * @restore: restore CRTC state
  283.  * @reset: reset CRTC after state has been invalidated (e.g. resume)
  284.  * @cursor_set: setup the cursor
  285.  * @cursor_set2: setup the cursor with hotspot, superseeds @cursor_set if set
  286.  * @cursor_move: move the cursor
  287.  * @gamma_set: specify color ramp for CRTC
  288.  * @destroy: deinit and free object
  289.  * @set_property: called when a property is changed
  290.  * @set_config: apply a new CRTC configuration
  291.  * @page_flip: initiate a page flip
  292.  * @atomic_duplicate_state: duplicate the atomic state for this CRTC
  293.  * @atomic_destroy_state: destroy an atomic state for this CRTC
  294.  * @atomic_set_property: set a property on an atomic state for this CRTC
  295.  *
  296.  * The drm_crtc_funcs structure is the central CRTC management structure
  297.  * in the DRM.  Each CRTC controls one or more connectors (note that the name
  298.  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
  299.  * connectors, not just CRTs).
  300.  *
  301.  * Each driver is responsible for filling out this structure at startup time,
  302.  * in addition to providing other modesetting features, like i2c and DDC
  303.  * bus accessors.
  304.  */
  305. struct drm_crtc_funcs {
  306.         /* Save CRTC state */
  307.         void (*save)(struct drm_crtc *crtc); /* suspend? */
  308.         /* Restore CRTC state */
  309.         void (*restore)(struct drm_crtc *crtc); /* resume? */
  310.         /* Reset CRTC state */
  311.         void (*reset)(struct drm_crtc *crtc);
  312.  
  313.         /* cursor controls */
  314.         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
  315.                           uint32_t handle, uint32_t width, uint32_t height);
  316.         int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv,
  317.                            uint32_t handle, uint32_t width, uint32_t height,
  318.                            int32_t hot_x, int32_t hot_y);
  319.         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
  320.  
  321.         /* Set gamma on the CRTC */
  322.         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
  323.                           uint32_t start, uint32_t size);
  324.         /* Object destroy routine */
  325.         void (*destroy)(struct drm_crtc *crtc);
  326.  
  327.         int (*set_config)(struct drm_mode_set *set);
  328.  
  329.         /*
  330.          * Flip to the given framebuffer.  This implements the page
  331.          * flip ioctl described in drm_mode.h, specifically, the
  332.          * implementation must return immediately and block all
  333.          * rendering to the current fb until the flip has completed.
  334.          * If userspace set the event flag in the ioctl, the event
  335.          * argument will point to an event to send back when the flip
  336.          * completes, otherwise it will be NULL.
  337.          */
  338.         int (*page_flip)(struct drm_crtc *crtc,
  339.                          struct drm_framebuffer *fb,
  340.                          struct drm_pending_vblank_event *event,
  341.                          uint32_t flags);
  342.  
  343.         int (*set_property)(struct drm_crtc *crtc,
  344.                             struct drm_property *property, uint64_t val);
  345.  
  346.         /* atomic update handling */
  347.         struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc);
  348.         void (*atomic_destroy_state)(struct drm_crtc *crtc,
  349.                                      struct drm_crtc_state *state);
  350.         int (*atomic_set_property)(struct drm_crtc *crtc,
  351.                                    struct drm_crtc_state *state,
  352.                                    struct drm_property *property,
  353.                                    uint64_t val);
  354. };
  355.  
  356. /**
  357.  * struct drm_crtc - central CRTC control structure
  358.  * @dev: parent DRM device
  359.  * @port: OF node used by drm_of_find_possible_crtcs()
  360.  * @head: list management
  361.  * @mutex: per-CRTC locking
  362.  * @base: base KMS object for ID tracking etc.
  363.  * @primary: primary plane for this CRTC
  364.  * @cursor: cursor plane for this CRTC
  365.  * @cursor_x: current x position of the cursor, used for universal cursor planes
  366.  * @cursor_y: current y position of the cursor, used for universal cursor planes
  367.  * @enabled: is this CRTC enabled?
  368.  * @mode: current mode timings
  369.  * @hwmode: mode timings as programmed to hw regs
  370.  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
  371.  *    invert the width/height of the crtc.  This is used if the driver
  372.  *    is performing 90 or 270 degree rotated scanout
  373.  * @x: x position on screen
  374.  * @y: y position on screen
  375.  * @funcs: CRTC control functions
  376.  * @gamma_size: size of gamma ramp
  377.  * @gamma_store: gamma ramp values
  378.  * @framedur_ns: precise frame timing
  379.  * @linedur_ns: precise line timing
  380.  * @pixeldur_ns: precise pixel timing
  381.  * @helper_private: mid-layer private data
  382.  * @properties: property tracking for this CRTC
  383.  * @state: current atomic state for this CRTC
  384.  * @acquire_ctx: per-CRTC implicit acquire context used by atomic drivers for
  385.  *      legacy ioctls
  386.  *
  387.  * Each CRTC may have one or more connectors associated with it.  This structure
  388.  * allows the CRTC to be controlled.
  389.  */
  390. struct drm_crtc {
  391.         struct drm_device *dev;
  392.         struct device_node *port;
  393.         struct list_head head;
  394.  
  395.         /*
  396.          * crtc mutex
  397.          *
  398.          * This provides a read lock for the overall crtc state (mode, dpms
  399.          * state, ...) and a write lock for everything which can be update
  400.          * without a full modeset (fb, cursor data, ...)
  401.          */
  402.         struct drm_modeset_lock mutex;
  403.  
  404.         struct drm_mode_object base;
  405.  
  406.         /* primary and cursor planes for CRTC */
  407.         struct drm_plane *primary;
  408.         struct drm_plane *cursor;
  409.  
  410.         /* position of cursor plane on crtc */
  411.         int cursor_x;
  412.         int cursor_y;
  413.  
  414.         bool enabled;
  415.  
  416.         /* Requested mode from modesetting. */
  417.         struct drm_display_mode mode;
  418.  
  419.         /* Programmed mode in hw, after adjustments for encoders,
  420.          * crtc, panel scaling etc. Needed for timestamping etc.
  421.          */
  422.         struct drm_display_mode hwmode;
  423.  
  424.         bool invert_dimensions;
  425.  
  426.         int x, y;
  427.         const struct drm_crtc_funcs *funcs;
  428.  
  429.         /* CRTC gamma size for reporting to userspace */
  430.         uint32_t gamma_size;
  431.         uint16_t *gamma_store;
  432.  
  433.         /* Constants needed for precise vblank and swap timestamping. */
  434.         int framedur_ns, linedur_ns, pixeldur_ns;
  435.  
  436.         /* if you are using the helper */
  437.         void *helper_private;
  438.  
  439.         struct drm_object_properties properties;
  440.  
  441.         struct drm_crtc_state *state;
  442.  
  443.         /*
  444.          * For legacy crtc ioctls so that atomic drivers can get at the locking
  445.          * acquire context.
  446.          */
  447.         struct drm_modeset_acquire_ctx *acquire_ctx;
  448. };
  449.  
  450. /**
  451.  * struct drm_connector_state - mutable connector state
  452.  * @crtc: CRTC to connect connector to, NULL if disabled
  453.  * @best_encoder: can be used by helpers and drivers to select the encoder
  454.  * @state: backpointer to global drm_atomic_state
  455.  */
  456. struct drm_connector_state {
  457.         struct drm_crtc *crtc;  /* do not write directly, use drm_atomic_set_crtc_for_connector() */
  458.  
  459.         struct drm_encoder *best_encoder;
  460.  
  461.         struct drm_atomic_state *state;
  462. };
  463.  
  464. /**
  465.  * struct drm_connector_funcs - control connectors on a given device
  466.  * @dpms: set power state (see drm_crtc_funcs above)
  467.  * @save: save connector state
  468.  * @restore: restore connector state
  469.  * @reset: reset connector after state has been invalidated (e.g. resume)
  470.  * @detect: is this connector active?
  471.  * @fill_modes: fill mode list for this connector
  472.  * @set_property: property for this connector may need an update
  473.  * @destroy: make object go away
  474.  * @force: notify the driver that the connector is forced on
  475.  * @atomic_duplicate_state: duplicate the atomic state for this connector
  476.  * @atomic_destroy_state: destroy an atomic state for this connector
  477.  * @atomic_set_property: set a property on an atomic state for this connector
  478.  *
  479.  * Each CRTC may have one or more connectors attached to it.  The functions
  480.  * below allow the core DRM code to control connectors, enumerate available modes,
  481.  * etc.
  482.  */
  483. struct drm_connector_funcs {
  484.         void (*dpms)(struct drm_connector *connector, int mode);
  485.         void (*save)(struct drm_connector *connector);
  486.         void (*restore)(struct drm_connector *connector);
  487.         void (*reset)(struct drm_connector *connector);
  488.  
  489.         /* Check to see if anything is attached to the connector.
  490.          * @force is set to false whilst polling, true when checking the
  491.          * connector due to user request. @force can be used by the driver
  492.          * to avoid expensive, destructive operations during automated
  493.          * probing.
  494.          */
  495.         enum drm_connector_status (*detect)(struct drm_connector *connector,
  496.                                             bool force);
  497.         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
  498.         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
  499.                              uint64_t val);
  500.         void (*destroy)(struct drm_connector *connector);
  501.         void (*force)(struct drm_connector *connector);
  502.  
  503.         /* atomic update handling */
  504.         struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector);
  505.         void (*atomic_destroy_state)(struct drm_connector *connector,
  506.                                      struct drm_connector_state *state);
  507.         int (*atomic_set_property)(struct drm_connector *connector,
  508.                                    struct drm_connector_state *state,
  509.                                    struct drm_property *property,
  510.                                    uint64_t val);
  511. };
  512.  
  513. /**
  514.  * struct drm_encoder_funcs - encoder controls
  515.  * @reset: reset state (e.g. at init or resume time)
  516.  * @destroy: cleanup and free associated data
  517.  *
  518.  * Encoders sit between CRTCs and connectors.
  519.  */
  520. struct drm_encoder_funcs {
  521.         void (*reset)(struct drm_encoder *encoder);
  522.         void (*destroy)(struct drm_encoder *encoder);
  523. };
  524.  
  525. #define DRM_CONNECTOR_MAX_ENCODER 3
  526.  
  527. /**
  528.  * struct drm_encoder - central DRM encoder structure
  529.  * @dev: parent DRM device
  530.  * @head: list management
  531.  * @base: base KMS object
  532.  * @name: encoder name
  533.  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
  534.  * @possible_crtcs: bitmask of potential CRTC bindings
  535.  * @possible_clones: bitmask of potential sibling encoders for cloning
  536.  * @crtc: currently bound CRTC
  537.  * @bridge: bridge associated to the encoder
  538.  * @funcs: control functions
  539.  * @helper_private: mid-layer private data
  540.  *
  541.  * CRTCs drive pixels to encoders, which convert them into signals
  542.  * appropriate for a given connector or set of connectors.
  543.  */
  544. struct drm_encoder {
  545.         struct drm_device *dev;
  546.         struct list_head head;
  547.  
  548.         struct drm_mode_object base;
  549.         char *name;
  550.         int encoder_type;
  551.         uint32_t possible_crtcs;
  552.         uint32_t possible_clones;
  553.  
  554.         struct drm_crtc *crtc;
  555.         struct drm_bridge *bridge;
  556.         const struct drm_encoder_funcs *funcs;
  557.         void *helper_private;
  558. };
  559.  
  560. /* should we poll this connector for connects and disconnects */
  561. /* hot plug detectable */
  562. #define DRM_CONNECTOR_POLL_HPD (1 << 0)
  563. /* poll for connections */
  564. #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
  565. /* can cleanly poll for disconnections without flickering the screen */
  566. /* DACs should rarely do this without a lot of testing */
  567. #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
  568.  
  569. #define MAX_ELD_BYTES   128
  570.  
  571. /**
  572.  * struct drm_connector - central DRM connector control structure
  573.  * @dev: parent DRM device
  574.  * @kdev: kernel device for sysfs attributes
  575.  * @attr: sysfs attributes
  576.  * @head: list management
  577.  * @base: base KMS object
  578.  * @name: connector name
  579.  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
  580.  * @connector_type_id: index into connector type enum
  581.  * @interlace_allowed: can this connector handle interlaced modes?
  582.  * @doublescan_allowed: can this connector handle doublescan?
  583.  * @stereo_allowed: can this connector handle stereo modes?
  584.  * @modes: modes available on this connector (from fill_modes() + user)
  585.  * @status: one of the drm_connector_status enums (connected, not, or unknown)
  586.  * @probed_modes: list of modes derived directly from the display
  587.  * @display_info: information about attached display (e.g. from EDID)
  588.  * @funcs: connector control functions
  589.  * @edid_blob_ptr: DRM property containing EDID if present
  590.  * @properties: property tracking for this connector
  591.  * @path_blob_ptr: DRM blob property data for the DP MST path property
  592.  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
  593.  * @dpms: current dpms state
  594.  * @helper_private: mid-layer private data
  595.  * @cmdline_mode: mode line parsed from the kernel cmdline for this connector
  596.  * @force: a %DRM_FORCE_<foo> state for forced mode sets
  597.  * @override_edid: has the EDID been overwritten through debugfs for testing?
  598.  * @encoder_ids: valid encoders for this connector
  599.  * @encoder: encoder driving this connector, if any
  600.  * @eld: EDID-like data, if present
  601.  * @dvi_dual: dual link DVI, if found
  602.  * @max_tmds_clock: max clock rate, if found
  603.  * @latency_present: AV delay info from ELD, if found
  604.  * @video_latency: video latency info from ELD, if found
  605.  * @audio_latency: audio latency info from ELD, if found
  606.  * @null_edid_counter: track sinks that give us all zeros for the EDID
  607.  * @bad_edid_counter: track sinks that give us an EDID with invalid checksum
  608.  * @debugfs_entry: debugfs directory for this connector
  609.  * @state: current atomic state for this connector
  610.  * @has_tile: is this connector connected to a tiled monitor
  611.  * @tile_group: tile group for the connected monitor
  612.  * @tile_is_single_monitor: whether the tile is one monitor housing
  613.  * @num_h_tile: number of horizontal tiles in the tile group
  614.  * @num_v_tile: number of vertical tiles in the tile group
  615.  * @tile_h_loc: horizontal location of this tile
  616.  * @tile_v_loc: vertical location of this tile
  617.  * @tile_h_size: horizontal size of this tile.
  618.  * @tile_v_size: vertical size of this tile.
  619.  *
  620.  * Each connector may be connected to one or more CRTCs, or may be clonable by
  621.  * another connector if they can share a CRTC.  Each connector also has a specific
  622.  * position in the broader display (referred to as a 'screen' though it could
  623.  * span multiple monitors).
  624.  */
  625. struct drm_connector {
  626.         struct drm_device *dev;
  627.         struct device *kdev;
  628.         struct device_attribute *attr;
  629.         struct list_head head;
  630.  
  631.         struct drm_mode_object base;
  632.  
  633.         char *name;
  634.         int connector_type;
  635.         int connector_type_id;
  636.         bool interlace_allowed;
  637.         bool doublescan_allowed;
  638.         bool stereo_allowed;
  639.         struct list_head modes; /* list of modes on this connector */
  640.  
  641.         enum drm_connector_status status;
  642.  
  643.         /* these are modes added by probing with DDC or the BIOS */
  644.         struct list_head probed_modes;
  645.  
  646.         struct drm_display_info display_info;
  647.         const struct drm_connector_funcs *funcs;
  648.  
  649.         struct drm_property_blob *edid_blob_ptr;
  650.         struct drm_object_properties properties;
  651.  
  652.         struct drm_property_blob *path_blob_ptr;
  653.  
  654.         struct drm_property_blob *tile_blob_ptr;
  655.  
  656.         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
  657.  
  658.         /* requested DPMS state */
  659.         int dpms;
  660.  
  661.         void *helper_private;
  662.  
  663.         /* forced on connector */
  664.         struct drm_cmdline_mode cmdline_mode;
  665.         enum drm_connector_force force;
  666.         bool override_edid;
  667.         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
  668.         struct drm_encoder *encoder; /* currently active encoder */
  669.  
  670.         /* EDID bits */
  671.         uint8_t eld[MAX_ELD_BYTES];
  672.         bool dvi_dual;
  673.         int max_tmds_clock;     /* in MHz */
  674.         bool latency_present[2];
  675.         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
  676.         int audio_latency[2];
  677.         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
  678.         unsigned bad_edid_counter;
  679.  
  680.         struct dentry *debugfs_entry;
  681.  
  682.         struct drm_connector_state *state;
  683.  
  684.         /* DisplayID bits */
  685.         bool has_tile;
  686.         struct drm_tile_group *tile_group;
  687.         bool tile_is_single_monitor;
  688.  
  689.         uint8_t num_h_tile, num_v_tile;
  690.         uint8_t tile_h_loc, tile_v_loc;
  691.         uint16_t tile_h_size, tile_v_size;
  692. };
  693.  
  694. /**
  695.  * struct drm_plane_state - mutable plane state
  696.  * @crtc: currently bound CRTC, NULL if disabled
  697.  * @fb: currently bound framebuffer
  698.  * @fence: optional fence to wait for before scanning out @fb
  699.  * @crtc_x: left position of visible portion of plane on crtc
  700.  * @crtc_y: upper position of visible portion of plane on crtc
  701.  * @crtc_w: width of visible portion of plane on crtc
  702.  * @crtc_h: height of visible portion of plane on crtc
  703.  * @src_x: left position of visible portion of plane within
  704.  *      plane (in 16.16)
  705.  * @src_y: upper position of visible portion of plane within
  706.  *      plane (in 16.16)
  707.  * @src_w: width of visible portion of plane (in 16.16)
  708.  * @src_h: height of visible portion of plane (in 16.16)
  709.  * @state: backpointer to global drm_atomic_state
  710.  */
  711. struct drm_plane_state {
  712.         struct drm_crtc *crtc;   /* do not write directly, use drm_atomic_set_crtc_for_plane() */
  713.         struct drm_framebuffer *fb;  /* do not write directly, use drm_atomic_set_fb_for_plane() */
  714.         struct fence *fence;
  715.  
  716.         /* Signed dest location allows it to be partially off screen */
  717.         int32_t crtc_x, crtc_y;
  718.         uint32_t crtc_w, crtc_h;
  719.  
  720.         /* Source values are 16.16 fixed point */
  721.         uint32_t src_x, src_y;
  722.         uint32_t src_h, src_w;
  723.  
  724.         struct drm_atomic_state *state;
  725. };
  726.  
  727.  
  728. /**
  729.  * struct drm_plane_funcs - driver plane control functions
  730.  * @update_plane: update the plane configuration
  731.  * @disable_plane: shut down the plane
  732.  * @destroy: clean up plane resources
  733.  * @reset: reset plane after state has been invalidated (e.g. resume)
  734.  * @set_property: called when a property is changed
  735.  * @atomic_duplicate_state: duplicate the atomic state for this plane
  736.  * @atomic_destroy_state: destroy an atomic state for this plane
  737.  * @atomic_set_property: set a property on an atomic state for this plane
  738.  */
  739. struct drm_plane_funcs {
  740.         int (*update_plane)(struct drm_plane *plane,
  741.                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
  742.                             int crtc_x, int crtc_y,
  743.                             unsigned int crtc_w, unsigned int crtc_h,
  744.                             uint32_t src_x, uint32_t src_y,
  745.                             uint32_t src_w, uint32_t src_h);
  746.         int (*disable_plane)(struct drm_plane *plane);
  747.         void (*destroy)(struct drm_plane *plane);
  748.         void (*reset)(struct drm_plane *plane);
  749.  
  750.         int (*set_property)(struct drm_plane *plane,
  751.                             struct drm_property *property, uint64_t val);
  752.  
  753.         /* atomic update handling */
  754.         struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane);
  755.         void (*atomic_destroy_state)(struct drm_plane *plane,
  756.                                      struct drm_plane_state *state);
  757.         int (*atomic_set_property)(struct drm_plane *plane,
  758.                                    struct drm_plane_state *state,
  759.                                    struct drm_property *property,
  760.                                    uint64_t val);
  761. };
  762.  
  763. enum drm_plane_type {
  764.         DRM_PLANE_TYPE_OVERLAY,
  765.         DRM_PLANE_TYPE_PRIMARY,
  766.         DRM_PLANE_TYPE_CURSOR,
  767. };
  768.  
  769. /**
  770.  * struct drm_plane - central DRM plane control structure
  771.  * @dev: DRM device this plane belongs to
  772.  * @head: for list management
  773.  * @base: base mode object
  774.  * @possible_crtcs: pipes this plane can be bound to
  775.  * @format_types: array of formats supported by this plane
  776.  * @format_count: number of formats supported
  777.  * @crtc: currently bound CRTC
  778.  * @fb: currently bound fb
  779.  * @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by
  780.  *      drm_mode_set_config_internal() to implement correct refcounting.
  781.  * @funcs: helper functions
  782.  * @properties: property tracking for this plane
  783.  * @type: type of plane (overlay, primary, cursor)
  784.  * @state: current atomic state for this plane
  785.  */
  786. struct drm_plane {
  787.         struct drm_device *dev;
  788.         struct list_head head;
  789.  
  790.         struct drm_modeset_lock mutex;
  791.  
  792.         struct drm_mode_object base;
  793.  
  794.         uint32_t possible_crtcs;
  795.         uint32_t *format_types;
  796.         uint32_t format_count;
  797.  
  798.         struct drm_crtc *crtc;
  799.         struct drm_framebuffer *fb;
  800.  
  801.         struct drm_framebuffer *old_fb;
  802.  
  803.         const struct drm_plane_funcs *funcs;
  804.  
  805.         struct drm_object_properties properties;
  806.  
  807.         enum drm_plane_type type;
  808.  
  809.         void *helper_private;
  810.  
  811.         struct drm_plane_state *state;
  812. };
  813.  
  814. /**
  815.  * struct drm_bridge_funcs - drm_bridge control functions
  816.  * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
  817.  * @disable: Called right before encoder prepare, disables the bridge
  818.  * @post_disable: Called right after encoder prepare, for lockstepped disable
  819.  * @mode_set: Set this mode to the bridge
  820.  * @pre_enable: Called right before encoder commit, for lockstepped commit
  821.  * @enable: Called right after encoder commit, enables the bridge
  822.  * @destroy: make object go away
  823.  */
  824. struct drm_bridge_funcs {
  825.         bool (*mode_fixup)(struct drm_bridge *bridge,
  826.                            const struct drm_display_mode *mode,
  827.                            struct drm_display_mode *adjusted_mode);
  828.         void (*disable)(struct drm_bridge *bridge);
  829.         void (*post_disable)(struct drm_bridge *bridge);
  830.         void (*mode_set)(struct drm_bridge *bridge,
  831.                          struct drm_display_mode *mode,
  832.                          struct drm_display_mode *adjusted_mode);
  833.         void (*pre_enable)(struct drm_bridge *bridge);
  834.         void (*enable)(struct drm_bridge *bridge);
  835.         void (*destroy)(struct drm_bridge *bridge);
  836. };
  837.  
  838. /**
  839.  * struct drm_bridge - central DRM bridge control structure
  840.  * @dev: DRM device this bridge belongs to
  841.  * @head: list management
  842.  * @base: base mode object
  843.  * @funcs: control functions
  844.  * @driver_private: pointer to the bridge driver's internal context
  845.  */
  846. struct drm_bridge {
  847.         struct drm_device *dev;
  848.         struct list_head head;
  849.  
  850.         struct drm_mode_object base;
  851.  
  852.         const struct drm_bridge_funcs *funcs;
  853.         void *driver_private;
  854. };
  855.  
  856. /**
  857.  * struct struct drm_atomic_state - the global state object for atomic updates
  858.  * @dev: parent DRM device
  859.  * @flags: state flags like async update
  860.  * @planes: pointer to array of plane pointers
  861.  * @plane_states: pointer to array of plane states pointers
  862.  * @crtcs: pointer to array of CRTC pointers
  863.  * @crtc_states: pointer to array of CRTC states pointers
  864.  * @num_connector: size of the @connectors and @connector_states arrays
  865.  * @connectors: pointer to array of connector pointers
  866.  * @connector_states: pointer to array of connector states pointers
  867.  * @acquire_ctx: acquire context for this atomic modeset state update
  868.  */
  869. struct drm_atomic_state {
  870.         struct drm_device *dev;
  871.         uint32_t flags;
  872.         struct drm_plane **planes;
  873.         struct drm_plane_state **plane_states;
  874.         struct drm_crtc **crtcs;
  875.         struct drm_crtc_state **crtc_states;
  876.         int num_connector;
  877.         struct drm_connector **connectors;
  878.         struct drm_connector_state **connector_states;
  879.  
  880.         struct drm_modeset_acquire_ctx *acquire_ctx;
  881. };
  882.  
  883.  
  884. /**
  885.  * struct drm_mode_set - new values for a CRTC config change
  886.  * @fb: framebuffer to use for new config
  887.  * @crtc: CRTC whose configuration we're about to change
  888.  * @mode: mode timings to use
  889.  * @x: position of this CRTC relative to @fb
  890.  * @y: position of this CRTC relative to @fb
  891.  * @connectors: array of connectors to drive with this CRTC if possible
  892.  * @num_connectors: size of @connectors array
  893.  *
  894.  * Represents a single crtc the connectors that it drives with what mode
  895.  * and from which framebuffer it scans out from.
  896.  *
  897.  * This is used to set modes.
  898.  */
  899. struct drm_mode_set {
  900.         struct drm_framebuffer *fb;
  901.         struct drm_crtc *crtc;
  902.         struct drm_display_mode *mode;
  903.  
  904.         uint32_t x;
  905.         uint32_t y;
  906.  
  907.         struct drm_connector **connectors;
  908.         size_t num_connectors;
  909. };
  910.  
  911. /**
  912.  * struct drm_mode_config_funcs - basic driver provided mode setting functions
  913.  * @fb_create: create a new framebuffer object
  914.  * @output_poll_changed: function to handle output configuration changes
  915.  * @atomic_check: check whether a give atomic state update is possible
  916.  * @atomic_commit: commit an atomic state update previously verified with
  917.  *      atomic_check()
  918.  *
  919.  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
  920.  * involve drivers.
  921.  */
  922. struct drm_mode_config_funcs {
  923.         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
  924.                                              struct drm_file *file_priv,
  925.                                              struct drm_mode_fb_cmd2 *mode_cmd);
  926.         void (*output_poll_changed)(struct drm_device *dev);
  927.  
  928.         int (*atomic_check)(struct drm_device *dev,
  929.                             struct drm_atomic_state *a);
  930.         int (*atomic_commit)(struct drm_device *dev,
  931.                              struct drm_atomic_state *a,
  932.                              bool async);
  933. };
  934.  
  935. /**
  936.  * struct drm_mode_group - group of mode setting resources for potential sub-grouping
  937.  * @num_crtcs: CRTC count
  938.  * @num_encoders: encoder count
  939.  * @num_connectors: connector count
  940.  * @num_bridges: bridge count
  941.  * @id_list: list of KMS object IDs in this group
  942.  *
  943.  * Currently this simply tracks the global mode setting state.  But in the
  944.  * future it could allow groups of objects to be set aside into independent
  945.  * control groups for use by different user level processes (e.g. two X servers
  946.  * running simultaneously on different heads, each with their own mode
  947.  * configuration and freedom of mode setting).
  948.  */
  949. struct drm_mode_group {
  950.         uint32_t num_crtcs;
  951.         uint32_t num_encoders;
  952.         uint32_t num_connectors;
  953.         uint32_t num_bridges;
  954.  
  955.         /* list of object IDs for this group */
  956.         uint32_t *id_list;
  957. };
  958.  
  959. /**
  960.  * struct drm_mode_config - Mode configuration control structure
  961.  * @mutex: mutex protecting KMS related lists and structures
  962.  * @connection_mutex: ww mutex protecting connector state and routing
  963.  * @acquire_ctx: global implicit acquire context used by atomic drivers for
  964.  *      legacy ioctls
  965.  * @idr_mutex: mutex for KMS ID allocation and management
  966.  * @crtc_idr: main KMS ID tracking object
  967.  * @fb_lock: mutex to protect fb state and lists
  968.  * @num_fb: number of fbs available
  969.  * @fb_list: list of framebuffers available
  970.  * @num_connector: number of connectors on this device
  971.  * @connector_list: list of connector objects
  972.  * @num_bridge: number of bridges on this device
  973.  * @bridge_list: list of bridge objects
  974.  * @num_encoder: number of encoders on this device
  975.  * @encoder_list: list of encoder objects
  976.  * @num_overlay_plane: number of overlay planes on this device
  977.  * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device
  978.  * @plane_list: list of plane objects
  979.  * @num_crtc: number of CRTCs on this device
  980.  * @crtc_list: list of CRTC objects
  981.  * @property_list: list of property objects
  982.  * @min_width: minimum pixel width on this device
  983.  * @min_height: minimum pixel height on this device
  984.  * @max_width: maximum pixel width on this device
  985.  * @max_height: maximum pixel height on this device
  986.  * @funcs: core driver provided mode setting functions
  987.  * @fb_base: base address of the framebuffer
  988.  * @poll_enabled: track polling support for this device
  989.  * @poll_running: track polling status for this device
  990.  * @output_poll_work: delayed work for polling in process context
  991.  * @property_blob_list: list of all the blob property objects
  992.  * @*_property: core property tracking
  993.  * @preferred_depth: preferred RBG pixel depth, used by fb helpers
  994.  * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
  995.  * @async_page_flip: does this device support async flips on the primary plane?
  996.  * @cursor_width: hint to userspace for max cursor width
  997.  * @cursor_height: hint to userspace for max cursor height
  998.  *
  999.  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
  1000.  * enumerated by the driver are added here, as are global properties.  Some
  1001.  * global restrictions are also here, e.g. dimension restrictions.
  1002.  */
  1003. struct drm_mode_config {
  1004.         struct mutex mutex; /* protects configuration (mode lists etc.) */
  1005.         struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */
  1006.         struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */
  1007.         struct mutex idr_mutex; /* for IDR management */
  1008.     struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
  1009.         struct idr tile_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
  1010.         /* this is limited to one for now */
  1011.  
  1012.         struct mutex fb_lock; /* proctects global and per-file fb lists */
  1013.         int num_fb;
  1014.         struct list_head fb_list;
  1015.  
  1016.         int num_connector;
  1017.         struct list_head connector_list;
  1018.         int num_bridge;
  1019.         struct list_head bridge_list;
  1020.         int num_encoder;
  1021.         struct list_head encoder_list;
  1022.  
  1023.         /*
  1024.          * Track # of overlay planes separately from # of total planes.  By
  1025.          * default we only advertise overlay planes to userspace; if userspace
  1026.          * sets the "universal plane" capability bit, we'll go ahead and
  1027.          * expose all planes.
  1028.          */
  1029.         int num_overlay_plane;
  1030.         int num_total_plane;
  1031.         struct list_head plane_list;
  1032.  
  1033.         int num_crtc;
  1034.         struct list_head crtc_list;
  1035.  
  1036.         struct list_head property_list;
  1037.  
  1038.         int min_width, min_height;
  1039.         int max_width, max_height;
  1040.         const struct drm_mode_config_funcs *funcs;
  1041.         resource_size_t fb_base;
  1042.  
  1043.         /* output poll support */
  1044.         bool poll_enabled;
  1045.         bool poll_running;
  1046.         struct delayed_work output_poll_work;
  1047.  
  1048.         /* pointers to standard properties */
  1049.         struct list_head property_blob_list;
  1050.         struct drm_property *edid_property;
  1051.         struct drm_property *dpms_property;
  1052.         struct drm_property *path_property;
  1053.         struct drm_property *tile_property;
  1054.         struct drm_property *plane_type_property;
  1055.         struct drm_property *rotation_property;
  1056.  
  1057.         /* DVI-I properties */
  1058.         struct drm_property *dvi_i_subconnector_property;
  1059.         struct drm_property *dvi_i_select_subconnector_property;
  1060.  
  1061.         /* TV properties */
  1062.         struct drm_property *tv_subconnector_property;
  1063.         struct drm_property *tv_select_subconnector_property;
  1064.         struct drm_property *tv_mode_property;
  1065.         struct drm_property *tv_left_margin_property;
  1066.         struct drm_property *tv_right_margin_property;
  1067.         struct drm_property *tv_top_margin_property;
  1068.         struct drm_property *tv_bottom_margin_property;
  1069.         struct drm_property *tv_brightness_property;
  1070.         struct drm_property *tv_contrast_property;
  1071.         struct drm_property *tv_flicker_reduction_property;
  1072.         struct drm_property *tv_overscan_property;
  1073.         struct drm_property *tv_saturation_property;
  1074.         struct drm_property *tv_hue_property;
  1075.  
  1076.         /* Optional properties */
  1077.         struct drm_property *scaling_mode_property;
  1078.         struct drm_property *aspect_ratio_property;
  1079.         struct drm_property *dirty_info_property;
  1080.  
  1081.         /* properties for virtual machine layout */
  1082.         struct drm_property *suggested_x_property;
  1083.         struct drm_property *suggested_y_property;
  1084.  
  1085.         /* dumb ioctl parameters */
  1086.         uint32_t preferred_depth, prefer_shadow;
  1087.  
  1088.         /* whether async page flip is supported or not */
  1089.         bool async_page_flip;
  1090.  
  1091.         /* cursor size */
  1092.         uint32_t cursor_width, cursor_height;
  1093. };
  1094.  
  1095. /**
  1096.  * drm_for_each_plane_mask - iterate over planes specified by bitmask
  1097.  * @plane: the loop cursor
  1098.  * @dev: the DRM device
  1099.  * @plane_mask: bitmask of plane indices
  1100.  *
  1101.  * Iterate over all planes specified by bitmask.
  1102.  */
  1103. #define drm_for_each_plane_mask(plane, dev, plane_mask) \
  1104.         list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \
  1105.                 if ((plane_mask) & (1 << drm_plane_index(plane)))
  1106.  
  1107.  
  1108. #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
  1109. #define obj_to_connector(x) container_of(x, struct drm_connector, base)
  1110. #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
  1111. #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
  1112. #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
  1113. #define obj_to_property(x) container_of(x, struct drm_property, base)
  1114. #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
  1115. #define obj_to_plane(x) container_of(x, struct drm_plane, base)
  1116.  
  1117. struct drm_prop_enum_list {
  1118.         int type;
  1119.         char *name;
  1120. };
  1121.  
  1122. extern int drm_crtc_init_with_planes(struct drm_device *dev,
  1123.                                      struct drm_crtc *crtc,
  1124.                                      struct drm_plane *primary,
  1125.                                      struct drm_plane *cursor,
  1126.                                      const struct drm_crtc_funcs *funcs);
  1127. extern void drm_crtc_cleanup(struct drm_crtc *crtc);
  1128. extern unsigned int drm_crtc_index(struct drm_crtc *crtc);
  1129.  
  1130. /**
  1131.  * drm_crtc_mask - find the mask of a registered CRTC
  1132.  * @crtc: CRTC to find mask for
  1133.  *
  1134.  * Given a registered CRTC, return the mask bit of that CRTC for an
  1135.  * encoder's possible_crtcs field.
  1136.  */
  1137. static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc)
  1138. {
  1139.         return 1 << drm_crtc_index(crtc);
  1140. }
  1141.  
  1142. extern void drm_connector_ida_init(void);
  1143. extern void drm_connector_ida_destroy(void);
  1144. extern int drm_connector_init(struct drm_device *dev,
  1145.                             struct drm_connector *connector,
  1146.                             const struct drm_connector_funcs *funcs,
  1147.                             int connector_type);
  1148. int drm_connector_register(struct drm_connector *connector);
  1149. void drm_connector_unregister(struct drm_connector *connector);
  1150.  
  1151. extern void drm_connector_cleanup(struct drm_connector *connector);
  1152. extern unsigned int drm_connector_index(struct drm_connector *connector);
  1153. /* helper to unplug all connectors from sysfs for device */
  1154. extern void drm_connector_unplug_all(struct drm_device *dev);
  1155.  
  1156. extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
  1157.                            const struct drm_bridge_funcs *funcs);
  1158. extern void drm_bridge_cleanup(struct drm_bridge *bridge);
  1159.  
  1160. extern int drm_encoder_init(struct drm_device *dev,
  1161.                              struct drm_encoder *encoder,
  1162.                              const struct drm_encoder_funcs *funcs,
  1163.                              int encoder_type);
  1164.  
  1165. /**
  1166.  * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
  1167.  * @encoder: encoder to test
  1168.  * @crtc: crtc to test
  1169.  *
  1170.  * Return false if @encoder can't be driven by @crtc, true otherwise.
  1171.  */
  1172. static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
  1173.                                        struct drm_crtc *crtc)
  1174. {
  1175.         return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
  1176. }
  1177.  
  1178. extern int drm_universal_plane_init(struct drm_device *dev,
  1179.                                     struct drm_plane *plane,
  1180.                                     unsigned long possible_crtcs,
  1181.                                     const struct drm_plane_funcs *funcs,
  1182.                                     const uint32_t *formats,
  1183.                                     uint32_t format_count,
  1184.                                     enum drm_plane_type type);
  1185. extern int drm_plane_init(struct drm_device *dev,
  1186.                           struct drm_plane *plane,
  1187.                           unsigned long possible_crtcs,
  1188.                           const struct drm_plane_funcs *funcs,
  1189.                           const uint32_t *formats, uint32_t format_count,
  1190.                           bool is_primary);
  1191. extern void drm_plane_cleanup(struct drm_plane *plane);
  1192. extern unsigned int drm_plane_index(struct drm_plane *plane);
  1193. extern void drm_plane_force_disable(struct drm_plane *plane);
  1194. extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
  1195.                                    int x, int y,
  1196.                                    const struct drm_display_mode *mode,
  1197.                                    const struct drm_framebuffer *fb);
  1198.  
  1199. extern void drm_encoder_cleanup(struct drm_encoder *encoder);
  1200.  
  1201. extern const char *drm_get_connector_status_name(enum drm_connector_status status);
  1202. extern const char *drm_get_subpixel_order_name(enum subpixel_order order);
  1203. extern const char *drm_get_dpms_name(int val);
  1204. extern const char *drm_get_dvi_i_subconnector_name(int val);
  1205. extern const char *drm_get_dvi_i_select_name(int val);
  1206. extern const char *drm_get_tv_subconnector_name(int val);
  1207. extern const char *drm_get_tv_select_name(int val);
  1208. extern void drm_fb_release(struct drm_file *file_priv);
  1209. extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
  1210. extern void drm_mode_group_destroy(struct drm_mode_group *group);
  1211. extern void drm_reinit_primary_mode_group(struct drm_device *dev);
  1212. extern bool drm_probe_ddc(struct i2c_adapter *adapter);
  1213. extern struct edid *drm_get_edid(struct drm_connector *connector,
  1214.                                  struct i2c_adapter *adapter);
  1215. extern struct edid *drm_edid_duplicate(const struct edid *edid);
  1216. extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
  1217. extern void drm_mode_config_init(struct drm_device *dev);
  1218. extern void drm_mode_config_reset(struct drm_device *dev);
  1219. extern void drm_mode_config_cleanup(struct drm_device *dev);
  1220.  
  1221. extern int drm_mode_connector_set_path_property(struct drm_connector *connector,
  1222.                                                 const char *path);
  1223. int drm_mode_connector_set_tile_property(struct drm_connector *connector);
  1224. extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
  1225.                                                    const struct edid *edid);
  1226.  
  1227. static inline bool drm_property_type_is(struct drm_property *property,
  1228.                 uint32_t type)
  1229. {
  1230.         /* instanceof for props.. handles extended type vs original types: */
  1231.         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
  1232.                 return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
  1233.         return property->flags & type;
  1234. }
  1235.  
  1236. static inline bool drm_property_type_valid(struct drm_property *property)
  1237. {
  1238.         if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
  1239.                 return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
  1240.         return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
  1241. }
  1242.  
  1243. extern int drm_object_property_set_value(struct drm_mode_object *obj,
  1244.                                          struct drm_property *property,
  1245.                                          uint64_t val);
  1246. extern int drm_object_property_get_value(struct drm_mode_object *obj,
  1247.                                          struct drm_property *property,
  1248.                                          uint64_t *value);
  1249. extern int drm_framebuffer_init(struct drm_device *dev,
  1250.                                 struct drm_framebuffer *fb,
  1251.                                 const struct drm_framebuffer_funcs *funcs);
  1252. extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
  1253.                                                       uint32_t id);
  1254. extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
  1255. extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
  1256. extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
  1257. extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
  1258. extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
  1259.  
  1260. extern void drm_object_attach_property(struct drm_mode_object *obj,
  1261.                                        struct drm_property *property,
  1262.                                        uint64_t init_val);
  1263. extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
  1264.                                                 const char *name, int num_values);
  1265. extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
  1266.                                          const char *name,
  1267.                                          const struct drm_prop_enum_list *props,
  1268.                                          int num_values);
  1269. struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
  1270.                                          int flags, const char *name,
  1271.                                          const struct drm_prop_enum_list *props,
  1272.                                          int num_props,
  1273.                                          uint64_t supported_bits);
  1274. struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
  1275.                                          const char *name,
  1276.                                          uint64_t min, uint64_t max);
  1277. struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
  1278.                                          int flags, const char *name,
  1279.                                          int64_t min, int64_t max);
  1280. struct drm_property *drm_property_create_object(struct drm_device *dev,
  1281.                                          int flags, const char *name, uint32_t type);
  1282. extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
  1283. extern int drm_property_add_enum(struct drm_property *property, int index,
  1284.                                  uint64_t value, const char *name);
  1285. extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
  1286. extern int drm_mode_create_tv_properties(struct drm_device *dev,
  1287.                                          unsigned int num_modes,
  1288.                                          char *modes[]);
  1289. extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
  1290. extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
  1291. extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
  1292. extern int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
  1293.  
  1294. extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
  1295.                                              struct drm_encoder *encoder);
  1296. extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
  1297.                                          int gamma_size);
  1298. extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
  1299.                 uint32_t id, uint32_t type);
  1300.  
  1301. /* IOCTLs */
  1302. extern int drm_mode_getresources(struct drm_device *dev,
  1303.                                  void *data, struct drm_file *file_priv);
  1304. extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
  1305.                                    struct drm_file *file_priv);
  1306. extern int drm_mode_getcrtc(struct drm_device *dev,
  1307.                             void *data, struct drm_file *file_priv);
  1308. extern int drm_mode_getconnector(struct drm_device *dev,
  1309.                               void *data, struct drm_file *file_priv);
  1310. extern int drm_mode_set_config_internal(struct drm_mode_set *set);
  1311. extern int drm_mode_setcrtc(struct drm_device *dev,
  1312.                             void *data, struct drm_file *file_priv);
  1313. extern int drm_mode_getplane(struct drm_device *dev,
  1314.                                void *data, struct drm_file *file_priv);
  1315. extern int drm_mode_setplane(struct drm_device *dev,
  1316.                                void *data, struct drm_file *file_priv);
  1317. extern int drm_mode_cursor_ioctl(struct drm_device *dev,
  1318.                                 void *data, struct drm_file *file_priv);
  1319. extern int drm_mode_cursor2_ioctl(struct drm_device *dev,
  1320.                                 void *data, struct drm_file *file_priv);
  1321. extern int drm_mode_addfb(struct drm_device *dev,
  1322.                           void *data, struct drm_file *file_priv);
  1323. extern int drm_mode_addfb2(struct drm_device *dev,
  1324.                            void *data, struct drm_file *file_priv);
  1325. extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
  1326. extern int drm_mode_rmfb(struct drm_device *dev,
  1327.                          void *data, struct drm_file *file_priv);
  1328. extern int drm_mode_getfb(struct drm_device *dev,
  1329.                           void *data, struct drm_file *file_priv);
  1330. extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
  1331.                                   void *data, struct drm_file *file_priv);
  1332.  
  1333. extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
  1334.                                       void *data, struct drm_file *file_priv);
  1335. extern int drm_mode_getblob_ioctl(struct drm_device *dev,
  1336.                                   void *data, struct drm_file *file_priv);
  1337. extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
  1338.                                               void *data, struct drm_file *file_priv);
  1339. extern int drm_mode_getencoder(struct drm_device *dev,
  1340.                                void *data, struct drm_file *file_priv);
  1341. extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
  1342.                                     void *data, struct drm_file *file_priv);
  1343. extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
  1344.                                     void *data, struct drm_file *file_priv);
  1345. extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
  1346. extern enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code);
  1347. extern bool drm_detect_hdmi_monitor(struct edid *edid);
  1348. extern bool drm_detect_monitor_audio(struct edid *edid);
  1349. extern bool drm_rgb_quant_range_selectable(struct edid *edid);
  1350. extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
  1351.                                     void *data, struct drm_file *file_priv);
  1352. extern int drm_add_modes_noedid(struct drm_connector *connector,
  1353.                                 int hdisplay, int vdisplay);
  1354. extern void drm_set_preferred_mode(struct drm_connector *connector,
  1355.                                    int hpref, int vpref);
  1356.  
  1357. extern int drm_edid_header_is_valid(const u8 *raw_edid);
  1358. extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
  1359. extern bool drm_edid_is_valid(struct edid *edid);
  1360.  
  1361. extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
  1362.                                                          char topology[8]);
  1363. extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
  1364.                                                char topology[8]);
  1365. extern void drm_mode_put_tile_group(struct drm_device *dev,
  1366.                                    struct drm_tile_group *tg);
  1367. struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
  1368.                                            int hsize, int vsize, int fresh,
  1369.                                            bool rb);
  1370.  
  1371. extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
  1372.                                       void *data, struct drm_file *file_priv);
  1373. extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
  1374.                                     void *data, struct drm_file *file_priv);
  1375. extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
  1376.                                       void *data, struct drm_file *file_priv);
  1377. extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
  1378.                                              struct drm_file *file_priv);
  1379. extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
  1380.                                            struct drm_file *file_priv);
  1381. extern int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
  1382.                                        struct drm_property *property,
  1383.                                        uint64_t value);
  1384.  
  1385. extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
  1386.                                  int *bpp);
  1387. extern int drm_format_num_planes(uint32_t format);
  1388. extern int drm_format_plane_cpp(uint32_t format, int plane);
  1389. extern int drm_format_horz_chroma_subsampling(uint32_t format);
  1390. extern int drm_format_vert_chroma_subsampling(uint32_t format);
  1391. extern const char *drm_get_format_name(uint32_t format);
  1392. extern struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
  1393.                                                               unsigned int supported_rotations);
  1394. extern unsigned int drm_rotation_simplify(unsigned int rotation,
  1395.                                           unsigned int supported_rotations);
  1396.  
  1397. /* Helpers */
  1398.  
  1399. static inline struct drm_plane *drm_plane_find(struct drm_device *dev,
  1400.                 uint32_t id)
  1401. {
  1402.         struct drm_mode_object *mo;
  1403.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE);
  1404.         return mo ? obj_to_plane(mo) : NULL;
  1405. }
  1406.  
  1407. static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,
  1408.         uint32_t id)
  1409. {
  1410.         struct drm_mode_object *mo;
  1411.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC);
  1412.         return mo ? obj_to_crtc(mo) : NULL;
  1413. }
  1414.  
  1415. static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
  1416.         uint32_t id)
  1417. {
  1418.         struct drm_mode_object *mo;
  1419.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
  1420.         return mo ? obj_to_encoder(mo) : NULL;
  1421. }
  1422.  
  1423. static inline struct drm_connector *drm_connector_find(struct drm_device *dev,
  1424.                 uint32_t id)
  1425. {
  1426.         struct drm_mode_object *mo;
  1427.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR);
  1428.         return mo ? obj_to_connector(mo) : NULL;
  1429. }
  1430.  
  1431. static inline struct drm_property *drm_property_find(struct drm_device *dev,
  1432.                 uint32_t id)
  1433. {
  1434.         struct drm_mode_object *mo;
  1435.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
  1436.         return mo ? obj_to_property(mo) : NULL;
  1437. }
  1438.  
  1439. static inline struct drm_property_blob *
  1440. drm_property_blob_find(struct drm_device *dev, uint32_t id)
  1441. {
  1442.         struct drm_mode_object *mo;
  1443.         mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
  1444.         return mo ? obj_to_blob(mo) : NULL;
  1445. }
  1446.  
  1447. /* Plane list iterator for legacy (overlay only) planes. */
  1448. #define drm_for_each_legacy_plane(plane, planelist) \
  1449.         list_for_each_entry(plane, planelist, head) \
  1450.                 if (plane->type == DRM_PLANE_TYPE_OVERLAY)
  1451.  
  1452. #endif /* __DRM_CRTC_H__ */
  1453.