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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 <drm/drm_mode.h>
  34.  
  35. #include <drm/drm_fourcc.h>
  36.  
  37. struct drm_device;
  38. struct drm_mode_set;
  39. struct drm_framebuffer;
  40. struct drm_object_properties;
  41.  
  42.  
  43. #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  44. #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  45. #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  46. #define DRM_MODE_OBJECT_MODE 0xdededede
  47. #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  48. #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  49. #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  50. #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  51.  
  52. struct drm_mode_object {
  53.         uint32_t id;
  54.         uint32_t type;
  55.         struct drm_object_properties *properties;
  56. };
  57.  
  58. #define DRM_OBJECT_MAX_PROPERTY 24
  59. struct drm_object_properties {
  60.         int count;
  61.         uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
  62.         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
  63. };
  64.  
  65. /*
  66.  * Note on terminology:  here, for brevity and convenience, we refer to connector
  67.  * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
  68.  * DVI, etc.  And 'screen' refers to the whole of the visible display, which
  69.  * may span multiple monitors (and therefore multiple CRTC and connector
  70.  * structures).
  71.  */
  72.  
  73. enum drm_mode_status {
  74.     MODE_OK     = 0,    /* Mode OK */
  75.     MODE_HSYNC,         /* hsync out of range */
  76.     MODE_VSYNC,         /* vsync out of range */
  77.     MODE_H_ILLEGAL,     /* mode has illegal horizontal timings */
  78.     MODE_V_ILLEGAL,     /* mode has illegal horizontal timings */
  79.     MODE_BAD_WIDTH,     /* requires an unsupported linepitch */
  80.     MODE_NOMODE,        /* no mode with a matching name */
  81.     MODE_NO_INTERLACE,  /* interlaced mode not supported */
  82.     MODE_NO_DBLESCAN,   /* doublescan mode not supported */
  83.     MODE_NO_VSCAN,      /* multiscan mode not supported */
  84.     MODE_MEM,           /* insufficient video memory */
  85.     MODE_VIRTUAL_X,     /* mode width too large for specified virtual size */
  86.     MODE_VIRTUAL_Y,     /* mode height too large for specified virtual size */
  87.     MODE_MEM_VIRT,      /* insufficient video memory given virtual size */
  88.     MODE_NOCLOCK,       /* no fixed clock available */
  89.     MODE_CLOCK_HIGH,    /* clock required is too high */
  90.     MODE_CLOCK_LOW,     /* clock required is too low */
  91.     MODE_CLOCK_RANGE,   /* clock/mode isn't in a ClockRange */
  92.     MODE_BAD_HVALUE,    /* horizontal timing was out of range */
  93.     MODE_BAD_VVALUE,    /* vertical timing was out of range */
  94.     MODE_BAD_VSCAN,     /* VScan value out of range */
  95.     MODE_HSYNC_NARROW,  /* horizontal sync too narrow */
  96.     MODE_HSYNC_WIDE,    /* horizontal sync too wide */
  97.     MODE_HBLANK_NARROW, /* horizontal blanking too narrow */
  98.     MODE_HBLANK_WIDE,   /* horizontal blanking too wide */
  99.     MODE_VSYNC_NARROW,  /* vertical sync too narrow */
  100.     MODE_VSYNC_WIDE,    /* vertical sync too wide */
  101.     MODE_VBLANK_NARROW, /* vertical blanking too narrow */
  102.     MODE_VBLANK_WIDE,   /* vertical blanking too wide */
  103.     MODE_PANEL,         /* exceeds panel dimensions */
  104.     MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
  105.     MODE_ONE_WIDTH,     /* only one width is supported */
  106.     MODE_ONE_HEIGHT,    /* only one height is supported */
  107.     MODE_ONE_SIZE,      /* only one resolution is supported */
  108.     MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */
  109.     MODE_UNVERIFIED = -3, /* mode needs to reverified */
  110.     MODE_BAD = -2,      /* unspecified reason */
  111.     MODE_ERROR  = -1    /* error condition */
  112. };
  113.  
  114. #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
  115.                                     DRM_MODE_TYPE_CRTC_C)
  116.  
  117. #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
  118.         .name = nm, .status = 0, .type = (t), .clock = (c), \
  119.         .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
  120.         .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
  121.         .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
  122.         .vscan = (vs), .flags = (f), .vrefresh = 0, \
  123.         .base.type = DRM_MODE_OBJECT_MODE
  124.  
  125. #define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
  126.  
  127. struct drm_display_mode {
  128.         /* Header */
  129.         struct list_head head;
  130.         struct drm_mode_object base;
  131.  
  132.         char name[DRM_DISPLAY_MODE_LEN];
  133.  
  134.         enum drm_mode_status status;
  135.         unsigned int type;
  136.  
  137.         /* Proposed mode values */
  138.         int clock;              /* in kHz */
  139.         int hdisplay;
  140.         int hsync_start;
  141.         int hsync_end;
  142.         int htotal;
  143.         int hskew;
  144.         int vdisplay;
  145.         int vsync_start;
  146.         int vsync_end;
  147.         int vtotal;
  148.         int vscan;
  149.         unsigned int flags;
  150.  
  151.         /* Addressable image size (may be 0 for projectors, etc.) */
  152.         int width_mm;
  153.         int height_mm;
  154.  
  155.         /* Actual mode we give to hw */
  156.         int clock_index;
  157.         int synth_clock;
  158.         int crtc_hdisplay;
  159.         int crtc_hblank_start;
  160.         int crtc_hblank_end;
  161.         int crtc_hsync_start;
  162.         int crtc_hsync_end;
  163.         int crtc_htotal;
  164.         int crtc_hskew;
  165.         int crtc_vdisplay;
  166.         int crtc_vblank_start;
  167.         int crtc_vblank_end;
  168.         int crtc_vsync_start;
  169.         int crtc_vsync_end;
  170.         int crtc_vtotal;
  171.  
  172.         /* Driver private mode info */
  173.         int private_size;
  174.         int *private;
  175.         int private_flags;
  176.  
  177.         int vrefresh;           /* in Hz */
  178.         int hsync;              /* in kHz */
  179. };
  180.  
  181. enum drm_connector_status {
  182.         connector_status_connected = 1,
  183.         connector_status_disconnected = 2,
  184.         connector_status_unknown = 3,
  185. };
  186.  
  187. enum subpixel_order {
  188.         SubPixelUnknown = 0,
  189.         SubPixelHorizontalRGB,
  190.         SubPixelHorizontalBGR,
  191.         SubPixelVerticalRGB,
  192.         SubPixelVerticalBGR,
  193.         SubPixelNone,
  194. };
  195.  
  196. #define DRM_COLOR_FORMAT_RGB444         (1<<0)
  197. #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
  198. #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
  199. /*
  200.  * Describes a given display (e.g. CRT or flat panel) and its limitations.
  201.  */
  202. struct drm_display_info {
  203.         char name[DRM_DISPLAY_INFO_LEN];
  204.  
  205.         /* Physical size */
  206.         unsigned int width_mm;
  207.         unsigned int height_mm;
  208.  
  209.         /* Clock limits FIXME: storage format */
  210.         unsigned int min_vfreq, max_vfreq;
  211.         unsigned int min_hfreq, max_hfreq;
  212.         unsigned int pixel_clock;
  213.         unsigned int bpc;
  214.  
  215.         enum subpixel_order subpixel_order;
  216.         u32 color_formats;
  217.  
  218.         u8 cea_rev;
  219. };
  220.  
  221. struct drm_framebuffer_funcs {
  222.         /* note: use drm_framebuffer_remove() */
  223.         void (*destroy)(struct drm_framebuffer *framebuffer);
  224.         int (*create_handle)(struct drm_framebuffer *fb,
  225.                              struct drm_file *file_priv,
  226.                              unsigned int *handle);
  227.         /**
  228.          * Optinal callback for the dirty fb ioctl.
  229.          *
  230.          * Userspace can notify the driver via this callback
  231.          * that a area of the framebuffer has changed and should
  232.          * be flushed to the display hardware.
  233.          *
  234.          * See documentation in drm_mode.h for the struct
  235.          * drm_mode_fb_dirty_cmd for more information as all
  236.          * the semantics and arguments have a one to one mapping
  237.          * on this function.
  238.          */
  239.         int (*dirty)(struct drm_framebuffer *framebuffer,
  240.                      struct drm_file *file_priv, unsigned flags,
  241.                      unsigned color, struct drm_clip_rect *clips,
  242.                      unsigned num_clips);
  243. };
  244.  
  245. struct drm_framebuffer {
  246.         struct drm_device *dev;
  247.         /*
  248.          * Note that the fb is refcounted for the benefit of driver internals,
  249.          * for example some hw, disabling a CRTC/plane is asynchronous, and
  250.          * scanout does not actually complete until the next vblank.  So some
  251.          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
  252.          * should be deferred.  In cases like this, the driver would like to
  253.          * hold a ref to the fb even though it has already been removed from
  254.          * userspace perspective.
  255.          */
  256.         struct kref refcount;
  257.         struct list_head head;
  258.         struct drm_mode_object base;
  259.         const struct drm_framebuffer_funcs *funcs;
  260.         unsigned int pitches[4];
  261.         unsigned int offsets[4];
  262.         unsigned int width;
  263.         unsigned int height;
  264.         /* depth can be 15 or 16 */
  265.         unsigned int depth;
  266.         int bits_per_pixel;
  267.         int flags;
  268.         uint32_t pixel_format; /* fourcc format */
  269.         struct list_head filp_head;
  270.         /* if you are using the helper */
  271.         void *helper_private;
  272. };
  273.  
  274. struct drm_property_blob {
  275.         struct drm_mode_object base;
  276.         struct list_head head;
  277.         unsigned int length;
  278.         unsigned char data[];
  279. };
  280.  
  281. struct drm_property_enum {
  282.         uint64_t value;
  283.         struct list_head head;
  284.         char name[DRM_PROP_NAME_LEN];
  285. };
  286.  
  287. struct drm_property {
  288.     struct      list_head head;
  289.     struct      drm_mode_object base;
  290.     uint32_t    flags;
  291.     char        name[DRM_PROP_NAME_LEN];
  292.     uint32_t    num_values;
  293.     uint64_t    *values;
  294.  
  295.         struct list_head enum_blob_list;
  296. };
  297.  
  298. struct drm_crtc;
  299. struct drm_connector;
  300. struct drm_encoder;
  301. struct drm_pending_vblank_event;
  302. struct drm_plane;
  303.  
  304. /**
  305.  * drm_crtc_funcs - control CRTCs for a given device
  306.  * @save: save CRTC state
  307.  * @restore: restore CRTC state
  308.  * @reset: reset CRTC after state has been invalidate (e.g. resume)
  309.  * @cursor_set: setup the cursor
  310.  * @cursor_move: move the cursor
  311.  * @gamma_set: specify color ramp for CRTC
  312.  * @destroy: deinit and free object
  313.  * @set_property: called when a property is changed
  314.  * @set_config: apply a new CRTC configuration
  315.  * @page_flip: initiate a page flip
  316.  *
  317.  * The drm_crtc_funcs structure is the central CRTC management structure
  318.  * in the DRM.  Each CRTC controls one or more connectors (note that the name
  319.  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
  320.  * connectors, not just CRTs).
  321.  *
  322.  * Each driver is responsible for filling out this structure at startup time,
  323.  * in addition to providing other modesetting features, like i2c and DDC
  324.  * bus accessors.
  325.  */
  326. struct drm_crtc_funcs {
  327.         /* Save CRTC state */
  328.         void (*save)(struct drm_crtc *crtc); /* suspend? */
  329.         /* Restore CRTC state */
  330.         void (*restore)(struct drm_crtc *crtc); /* resume? */
  331.         /* Reset CRTC state */
  332.         void (*reset)(struct drm_crtc *crtc);
  333.  
  334.         /* cursor controls */
  335.         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
  336.                           uint32_t handle, uint32_t width, uint32_t height);
  337.         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
  338.  
  339.         /* Set gamma on the CRTC */
  340.         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
  341.                           uint32_t start, uint32_t size);
  342.         /* Object destroy routine */
  343.         void (*destroy)(struct drm_crtc *crtc);
  344.  
  345.         int (*set_config)(struct drm_mode_set *set);
  346.  
  347.         /*
  348.          * Flip to the given framebuffer.  This implements the page
  349.          * flip ioctl described in drm_mode.h, specifically, the
  350.          * implementation must return immediately and block all
  351.          * rendering to the current fb until the flip has completed.
  352.          * If userspace set the event flag in the ioctl, the event
  353.          * argument will point to an event to send back when the flip
  354.          * completes, otherwise it will be NULL.
  355.          */
  356.         int (*page_flip)(struct drm_crtc *crtc,
  357.                          struct drm_framebuffer *fb,
  358.                          struct drm_pending_vblank_event *event);
  359.  
  360.         int (*set_property)(struct drm_crtc *crtc,
  361.                             struct drm_property *property, uint64_t val);
  362. };
  363.  
  364. /**
  365.  * drm_crtc - central CRTC control structure
  366.  * @dev: parent DRM device
  367.  * @head: list management
  368.  * @base: base KMS object for ID tracking etc.
  369.  * @enabled: is this CRTC enabled?
  370.  * @mode: current mode timings
  371.  * @hwmode: mode timings as programmed to hw regs
  372.  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
  373.  *    invert the width/height of the crtc.  This is used if the driver
  374.  *    is performing 90 or 270 degree rotated scanout
  375.  * @x: x position on screen
  376.  * @y: y position on screen
  377.  * @funcs: CRTC control functions
  378.  * @gamma_size: size of gamma ramp
  379.  * @gamma_store: gamma ramp values
  380.  * @framedur_ns: precise frame timing
  381.  * @framedur_ns: precise line timing
  382.  * @pixeldur_ns: precise pixel timing
  383.  * @helper_private: mid-layer private data
  384.  * @properties: property tracking for this CRTC
  385.  *
  386.  * Each CRTC may have one or more connectors associated with it.  This structure
  387.  * allows the CRTC to be controlled.
  388.  */
  389. struct drm_crtc {
  390.         struct drm_device *dev;
  391.         struct list_head head;
  392.  
  393.         struct drm_mode_object base;
  394.  
  395.         /* framebuffer the connector is currently bound to */
  396.         struct drm_framebuffer *fb;
  397.  
  398.         bool enabled;
  399.  
  400.         /* Requested mode from modesetting. */
  401.         struct drm_display_mode mode;
  402.  
  403.         /* Programmed mode in hw, after adjustments for encoders,
  404.          * crtc, panel scaling etc. Needed for timestamping etc.
  405.          */
  406.         struct drm_display_mode hwmode;
  407.  
  408.         bool invert_dimensions;
  409.  
  410.         int x, y;
  411.         const struct drm_crtc_funcs *funcs;
  412.  
  413.         /* CRTC gamma size for reporting to userspace */
  414.         uint32_t gamma_size;
  415.         uint16_t *gamma_store;
  416.  
  417.         /* Constants needed for precise vblank and swap timestamping. */
  418.         s64 framedur_ns, linedur_ns, pixeldur_ns;
  419.  
  420.         /* if you are using the helper */
  421.         void *helper_private;
  422.  
  423.         struct drm_object_properties properties;
  424. };
  425.  
  426.  
  427. /**
  428.  * drm_connector_funcs - control connectors on a given device
  429.  * @dpms: set power state (see drm_crtc_funcs above)
  430.  * @save: save connector state
  431.  * @restore: restore connector state
  432.  * @reset: reset connector after state has been invalidate (e.g. resume)
  433.  * @detect: is this connector active?
  434.  * @fill_modes: fill mode list for this connector
  435.  * @set_property: property for this connector may need update
  436.  * @destroy: make object go away
  437.  * @force: notify the driver the connector is forced on
  438.  *
  439.  * Each CRTC may have one or more connectors attached to it.  The functions
  440.  * below allow the core DRM code to control connectors, enumerate available modes,
  441.  * etc.
  442.  */
  443. struct drm_connector_funcs {
  444.         void (*dpms)(struct drm_connector *connector, int mode);
  445.         void (*save)(struct drm_connector *connector);
  446.         void (*restore)(struct drm_connector *connector);
  447.         void (*reset)(struct drm_connector *connector);
  448.  
  449.         /* Check to see if anything is attached to the connector.
  450.          * @force is set to false whilst polling, true when checking the
  451.          * connector due to user request. @force can be used by the driver
  452.          * to avoid expensive, destructive operations during automated
  453.          * probing.
  454.          */
  455.         enum drm_connector_status (*detect)(struct drm_connector *connector,
  456.                                             bool force);
  457.         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
  458.         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
  459.                              uint64_t val);
  460.         void (*destroy)(struct drm_connector *connector);
  461.         void (*force)(struct drm_connector *connector);
  462. };
  463.  
  464. /**
  465.  * drm_encoder_funcs - encoder controls
  466.  * @reset: reset state (e.g. at init or resume time)
  467.  * @destroy: cleanup and free associated data
  468.  *
  469.  * Encoders sit between CRTCs and connectors.
  470.  */
  471. struct drm_encoder_funcs {
  472.         void (*reset)(struct drm_encoder *encoder);
  473.         void (*destroy)(struct drm_encoder *encoder);
  474. };
  475.  
  476. #define DRM_CONNECTOR_MAX_UMODES 16
  477. #define DRM_CONNECTOR_LEN 32
  478. #define DRM_CONNECTOR_MAX_ENCODER 3
  479.  
  480. /**
  481.  * drm_encoder - central DRM encoder structure
  482.  * @dev: parent DRM device
  483.  * @head: list management
  484.  * @base: base KMS object
  485.  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
  486.  * @possible_crtcs: bitmask of potential CRTC bindings
  487.  * @possible_clones: bitmask of potential sibling encoders for cloning
  488.  * @crtc: currently bound CRTC
  489.  * @funcs: control functions
  490.  * @helper_private: mid-layer private data
  491.  *
  492.  * CRTCs drive pixels to encoders, which convert them into signals
  493.  * appropriate for a given connector or set of connectors.
  494.  */
  495. struct drm_encoder {
  496.         struct drm_device *dev;
  497.         struct list_head head;
  498.  
  499.         struct drm_mode_object base;
  500.         int encoder_type;
  501.         uint32_t possible_crtcs;
  502.         uint32_t possible_clones;
  503.  
  504.         struct drm_crtc *crtc;
  505.         const struct drm_encoder_funcs *funcs;
  506.         void *helper_private;
  507. };
  508.  
  509. enum drm_connector_force {
  510.         DRM_FORCE_UNSPECIFIED,
  511.         DRM_FORCE_OFF,
  512.         DRM_FORCE_ON,         /* force on analog part normally */
  513.         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
  514. };
  515.  
  516. /* should we poll this connector for connects and disconnects */
  517. /* hot plug detectable */
  518. #define DRM_CONNECTOR_POLL_HPD (1 << 0)
  519. /* poll for connections */
  520. #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
  521. /* can cleanly poll for disconnections without flickering the screen */
  522. /* DACs should rarely do this without a lot of testing */
  523. #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
  524.  
  525. #define MAX_ELD_BYTES   128
  526.  
  527. /**
  528.  * drm_connector - central DRM connector control structure
  529.  * @dev: parent DRM device
  530.  * @kdev: kernel device for sysfs attributes
  531.  * @attr: sysfs attributes
  532.  * @head: list management
  533.  * @base: base KMS object
  534.  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
  535.  * @connector_type_id: index into connector type enum
  536.  * @interlace_allowed: can this connector handle interlaced modes?
  537.  * @doublescan_allowed: can this connector handle doublescan?
  538.  * @modes: modes available on this connector (from fill_modes() + user)
  539.  * @status: one of the drm_connector_status enums (connected, not, or unknown)
  540.  * @probed_modes: list of modes derived directly from the display
  541.  * @display_info: information about attached display (e.g. from EDID)
  542.  * @funcs: connector control functions
  543.  * @user_modes: user added mode list
  544.  * @edid_blob_ptr: DRM property containing EDID if present
  545.  * @properties: property tracking for this connector
  546.  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
  547.  * @dpms: current dpms state
  548.  * @helper_private: mid-layer private data
  549.  * @force: a %DRM_FORCE_<foo> state for forced mode sets
  550.  * @encoder_ids: valid encoders for this connector
  551.  * @encoder: encoder driving this connector, if any
  552.  * @eld: EDID-like data, if present
  553.  * @dvi_dual: dual link DVI, if found
  554.  * @max_tmds_clock: max clock rate, if found
  555.  * @latency_present: AV delay info from ELD, if found
  556.  * @video_latency: video latency info from ELD, if found
  557.  * @audio_latency: audio latency info from ELD, if found
  558.  * @null_edid_counter: track sinks that give us all zeros for the EDID
  559.  *
  560.  * Each connector may be connected to one or more CRTCs, or may be clonable by
  561.  * another connector if they can share a CRTC.  Each connector also has a specific
  562.  * position in the broader display (referred to as a 'screen' though it could
  563.  * span multiple monitors).
  564.  */
  565. struct drm_connector {
  566.         struct drm_device *dev;
  567.         struct device kdev;
  568.         struct device_attribute *attr;
  569.         struct list_head head;
  570.  
  571.         struct drm_mode_object base;
  572.  
  573.         int connector_type;
  574.         int connector_type_id;
  575.         bool interlace_allowed;
  576.         bool doublescan_allowed;
  577.         struct list_head modes; /* list of modes on this connector */
  578.  
  579.         enum drm_connector_status status;
  580.  
  581.         /* these are modes added by probing with DDC or the BIOS */
  582.         struct list_head probed_modes;
  583.  
  584.         struct drm_display_info display_info;
  585.         const struct drm_connector_funcs *funcs;
  586.  
  587.         struct list_head user_modes;
  588.         struct drm_property_blob *edid_blob_ptr;
  589.         struct drm_object_properties properties;
  590.  
  591.         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
  592.  
  593.         /* requested DPMS state */
  594.         int dpms;
  595.  
  596.         void *helper_private;
  597.  
  598.         /* forced on connector */
  599.         enum drm_connector_force force;
  600.         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
  601.         struct drm_encoder *encoder; /* currently active encoder */
  602.  
  603.         /* EDID bits */
  604.         uint8_t eld[MAX_ELD_BYTES];
  605.         bool dvi_dual;
  606.         int max_tmds_clock;     /* in MHz */
  607.         bool latency_present[2];
  608.         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
  609.         int audio_latency[2];
  610.         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
  611.         unsigned bad_edid_counter;
  612. };
  613.  
  614. /**
  615.  * drm_plane_funcs - driver plane control functions
  616.  * @update_plane: update the plane configuration
  617.  * @disable_plane: shut down the plane
  618.  * @destroy: clean up plane resources
  619.  * @set_property: called when a property is changed
  620.  */
  621. struct drm_plane_funcs {
  622.         int (*update_plane)(struct drm_plane *plane,
  623.                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
  624.                             int crtc_x, int crtc_y,
  625.                             unsigned int crtc_w, unsigned int crtc_h,
  626.                             uint32_t src_x, uint32_t src_y,
  627.                             uint32_t src_w, uint32_t src_h);
  628.         int (*disable_plane)(struct drm_plane *plane);
  629.         void (*destroy)(struct drm_plane *plane);
  630.  
  631.         int (*set_property)(struct drm_plane *plane,
  632.                             struct drm_property *property, uint64_t val);
  633. };
  634.  
  635. /**
  636.  * drm_plane - central DRM plane control structure
  637.  * @dev: DRM device this plane belongs to
  638.  * @head: for list management
  639.  * @base: base mode object
  640.  * @possible_crtcs: pipes this plane can be bound to
  641.  * @format_types: array of formats supported by this plane
  642.  * @format_count: number of formats supported
  643.  * @crtc: currently bound CRTC
  644.  * @fb: currently bound fb
  645.  * @gamma_size: size of gamma table
  646.  * @gamma_store: gamma correction table
  647.  * @enabled: enabled flag
  648.  * @funcs: helper functions
  649.  * @helper_private: storage for drver layer
  650.  * @properties: property tracking for this plane
  651.  */
  652. struct drm_plane {
  653.         struct drm_device *dev;
  654.         struct list_head head;
  655.  
  656.         struct drm_mode_object base;
  657.  
  658.         uint32_t possible_crtcs;
  659.         uint32_t *format_types;
  660.         uint32_t format_count;
  661.  
  662.         struct drm_crtc *crtc;
  663.         struct drm_framebuffer *fb;
  664.  
  665.         /* CRTC gamma size for reporting to userspace */
  666.         uint32_t gamma_size;
  667.         uint16_t *gamma_store;
  668.  
  669.         bool enabled;
  670.  
  671.         const struct drm_plane_funcs *funcs;
  672.         void *helper_private;
  673.  
  674.         struct drm_object_properties properties;
  675. };
  676.  
  677. /**
  678.  * drm_mode_set - new values for a CRTC config change
  679.  * @head: list management
  680.  * @fb: framebuffer to use for new config
  681.  * @crtc: CRTC whose configuration we're about to change
  682.  * @mode: mode timings to use
  683.  * @x: position of this CRTC relative to @fb
  684.  * @y: position of this CRTC relative to @fb
  685.  * @connectors: array of connectors to drive with this CRTC if possible
  686.  * @num_connectors: size of @connectors array
  687.  *
  688.  * Represents a single crtc the connectors that it drives with what mode
  689.  * and from which framebuffer it scans out from.
  690.  *
  691.  * This is used to set modes.
  692.  */
  693. struct drm_mode_set {
  694.         struct drm_framebuffer *fb;
  695.         struct drm_crtc *crtc;
  696.         struct drm_display_mode *mode;
  697.  
  698.         uint32_t x;
  699.         uint32_t y;
  700.  
  701.         struct drm_connector **connectors;
  702.         size_t num_connectors;
  703. };
  704.  
  705. /**
  706.  * struct drm_mode_config_funcs - basic driver provided mode setting functions
  707.  * @fb_create: create a new framebuffer object
  708.  * @output_poll_changed: function to handle output configuration changes
  709.  *
  710.  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
  711.  * involve drivers.
  712.  */
  713. struct drm_mode_config_funcs {
  714.         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
  715.                                              struct drm_file *file_priv,
  716.                                              struct drm_mode_fb_cmd2 *mode_cmd);
  717.         void (*output_poll_changed)(struct drm_device *dev);
  718. };
  719.  
  720. /**
  721.  * drm_mode_group - group of mode setting resources for potential sub-grouping
  722.  * @num_crtcs: CRTC count
  723.  * @num_encoders: encoder count
  724.  * @num_connectors: connector count
  725.  * @id_list: list of KMS object IDs in this group
  726.  *
  727.  * Currently this simply tracks the global mode setting state.  But in the
  728.  * future it could allow groups of objects to be set aside into independent
  729.  * control groups for use by different user level processes (e.g. two X servers
  730.  * running simultaneously on different heads, each with their own mode
  731.  * configuration and freedom of mode setting).
  732.  */
  733. struct drm_mode_group {
  734.         uint32_t num_crtcs;
  735.         uint32_t num_encoders;
  736.         uint32_t num_connectors;
  737.  
  738.         /* list of object IDs for this group */
  739.         uint32_t *id_list;
  740. };
  741.  
  742. /**
  743.  * drm_mode_config - Mode configuration control structure
  744.  * @mutex: mutex protecting KMS related lists and structures
  745.  * @idr_mutex: mutex for KMS ID allocation and management
  746.  * @crtc_idr: main KMS ID tracking object
  747.  * @num_fb: number of fbs available
  748.  * @fb_list: list of framebuffers available
  749.  * @num_connector: number of connectors on this device
  750.  * @connector_list: list of connector objects
  751.  * @num_encoder: number of encoders on this device
  752.  * @encoder_list: list of encoder objects
  753.  * @num_crtc: number of CRTCs on this device
  754.  * @crtc_list: list of CRTC objects
  755.  * @min_width: minimum pixel width on this device
  756.  * @min_height: minimum pixel height on this device
  757.  * @max_width: maximum pixel width on this device
  758.  * @max_height: maximum pixel height on this device
  759.  * @funcs: core driver provided mode setting functions
  760.  * @fb_base: base address of the framebuffer
  761.  * @poll_enabled: track polling status for this device
  762.  * @output_poll_work: delayed work for polling in process context
  763.  * @*_property: core property tracking
  764.  *
  765.  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
  766.  * enumerated by the driver are added here, as are global properties.  Some
  767.  * global restrictions are also here, e.g. dimension restrictions.
  768.  */
  769. struct drm_mode_config {
  770.         struct mutex mutex; /* protects configuration (mode lists etc.) */
  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.         int num_fb;
  775.         struct list_head fb_list;
  776.         int num_connector;
  777.         struct list_head connector_list;
  778.         int num_encoder;
  779.         struct list_head encoder_list;
  780.         int num_plane;
  781.         struct list_head plane_list;
  782.  
  783.         int num_crtc;
  784.         struct list_head crtc_list;
  785.  
  786.         struct list_head property_list;
  787.  
  788.         int min_width, min_height;
  789.         int max_width, max_height;
  790.         const struct drm_mode_config_funcs *funcs;
  791.         resource_size_t fb_base;
  792.  
  793.         /* output poll support */
  794.         bool poll_enabled;
  795.         bool poll_running;
  796. //      struct delayed_work output_poll_work;
  797.  
  798.         /* pointers to standard properties */
  799.         struct list_head property_blob_list;
  800.         struct drm_property *edid_property;
  801.         struct drm_property *dpms_property;
  802.  
  803.         /* DVI-I properties */
  804.         struct drm_property *dvi_i_subconnector_property;
  805.         struct drm_property *dvi_i_select_subconnector_property;
  806.  
  807.         /* TV properties */
  808.         struct drm_property *tv_subconnector_property;
  809.         struct drm_property *tv_select_subconnector_property;
  810.         struct drm_property *tv_mode_property;
  811.         struct drm_property *tv_left_margin_property;
  812.         struct drm_property *tv_right_margin_property;
  813.         struct drm_property *tv_top_margin_property;
  814.         struct drm_property *tv_bottom_margin_property;
  815.         struct drm_property *tv_brightness_property;
  816.         struct drm_property *tv_contrast_property;
  817.         struct drm_property *tv_flicker_reduction_property;
  818.         struct drm_property *tv_overscan_property;
  819.         struct drm_property *tv_saturation_property;
  820.         struct drm_property *tv_hue_property;
  821.  
  822.         /* Optional properties */
  823.         struct drm_property *scaling_mode_property;
  824.         struct drm_property *dithering_mode_property;
  825.         struct drm_property *dirty_info_property;
  826.  
  827.         /* dumb ioctl parameters */
  828.         uint32_t preferred_depth, prefer_shadow;
  829. };
  830.  
  831. #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
  832. #define obj_to_connector(x) container_of(x, struct drm_connector, base)
  833. #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
  834. #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
  835. #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
  836. #define obj_to_property(x) container_of(x, struct drm_property, base)
  837. #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
  838. #define obj_to_plane(x) container_of(x, struct drm_plane, base)
  839.  
  840. struct drm_prop_enum_list {
  841.         int type;
  842.         char *name;
  843. };
  844.  
  845. extern int drm_crtc_init(struct drm_device *dev,
  846.                           struct drm_crtc *crtc,
  847.                           const struct drm_crtc_funcs *funcs);
  848. extern void drm_crtc_cleanup(struct drm_crtc *crtc);
  849.  
  850. extern int drm_connector_init(struct drm_device *dev,
  851.                             struct drm_connector *connector,
  852.                             const struct drm_connector_funcs *funcs,
  853.                             int connector_type);
  854.  
  855. extern void drm_connector_cleanup(struct drm_connector *connector);
  856. /* helper to unplug all connectors from sysfs for device */
  857. extern void drm_connector_unplug_all(struct drm_device *dev);
  858.  
  859. extern int drm_encoder_init(struct drm_device *dev,
  860.                              struct drm_encoder *encoder,
  861.                              const struct drm_encoder_funcs *funcs,
  862.                              int encoder_type);
  863.  
  864. extern int drm_plane_init(struct drm_device *dev,
  865.                           struct drm_plane *plane,
  866.                           unsigned long possible_crtcs,
  867.                           const struct drm_plane_funcs *funcs,
  868.                           const uint32_t *formats, uint32_t format_count,
  869.                           bool priv);
  870. extern void drm_plane_cleanup(struct drm_plane *plane);
  871.  
  872. extern void drm_encoder_cleanup(struct drm_encoder *encoder);
  873.  
  874. extern char *drm_get_connector_name(struct drm_connector *connector);
  875. extern char *drm_get_dpms_name(int val);
  876. extern char *drm_get_dvi_i_subconnector_name(int val);
  877. extern char *drm_get_dvi_i_select_name(int val);
  878. extern char *drm_get_tv_subconnector_name(int val);
  879. extern char *drm_get_tv_select_name(int val);
  880. extern void drm_fb_release(struct drm_file *file_priv);
  881. extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
  882. extern bool drm_probe_ddc(struct i2c_adapter *adapter);
  883. extern struct edid *drm_get_edid(struct drm_connector *connector,
  884.                                  struct i2c_adapter *adapter);
  885. extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
  886. extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
  887. extern void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode);
  888. extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);
  889. extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
  890.                                                    const struct drm_display_mode *mode);
  891. extern void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
  892. extern void drm_mode_config_init(struct drm_device *dev);
  893. extern void drm_mode_config_reset(struct drm_device *dev);
  894. extern void drm_mode_config_cleanup(struct drm_device *dev);
  895. extern void drm_mode_set_name(struct drm_display_mode *mode);
  896. extern bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);
  897. extern int drm_mode_width(const struct drm_display_mode *mode);
  898. extern int drm_mode_height(const struct drm_display_mode *mode);
  899.  
  900. /* for us by fb module */
  901. extern int drm_mode_attachmode_crtc(struct drm_device *dev,
  902.                                     struct drm_crtc *crtc,
  903.                                     const struct drm_display_mode *mode);
  904. extern int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode);
  905.  
  906. extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
  907. extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
  908. extern void drm_mode_list_concat(struct list_head *head,
  909.                 struct list_head *new);
  910. extern void drm_mode_validate_size(struct drm_device *dev,
  911.                   struct list_head *mode_list,
  912.                   int maxX, int maxY, int maxPitch);
  913. extern void drm_mode_prune_invalid(struct drm_device *dev,
  914.                   struct list_head *mode_list, bool verbose);
  915. extern void drm_mode_sort(struct list_head *mode_list);
  916. extern int drm_mode_hsync(const struct drm_display_mode *mode);
  917. extern int drm_mode_vrefresh(const struct drm_display_mode *mode);
  918. extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
  919.                                   int adjust_flags);
  920. extern void drm_mode_connector_list_update(struct drm_connector *connector);
  921. extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
  922.                        struct edid *edid);
  923. extern int drm_object_property_set_value(struct drm_mode_object *obj,
  924.                                          struct drm_property *property,
  925.                                          uint64_t val);
  926. extern int drm_object_property_get_value(struct drm_mode_object *obj,
  927.                                          struct drm_property *property,
  928.                                          uint64_t *value);
  929. extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
  930. extern void drm_framebuffer_set_object(struct drm_device *dev,
  931.                                        unsigned long handle);
  932. extern int drm_framebuffer_init(struct drm_device *dev,
  933.                                 struct drm_framebuffer *fb,
  934.                                 const struct drm_framebuffer_funcs *funcs);
  935. extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
  936. extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
  937. extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
  938. extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
  939. extern int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc);
  940. extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb);
  941. extern void drm_crtc_probe_connector_modes(struct drm_device *dev, int maxX, int maxY);
  942. extern bool drm_crtc_in_use(struct drm_crtc *crtc);
  943.  
  944. extern void drm_object_attach_property(struct drm_mode_object *obj,
  945.                                        struct drm_property *property,
  946.                                        uint64_t init_val);
  947. extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
  948.                                                 const char *name, int num_values);
  949. extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
  950.                                          const char *name,
  951.                                          const struct drm_prop_enum_list *props,
  952.                                          int num_values);
  953. struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
  954.                                          int flags, const char *name,
  955.                                          const struct drm_prop_enum_list *props,
  956.                                          int num_values);
  957. struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
  958.                                          const char *name,
  959.                                          uint64_t min, uint64_t max);
  960. extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
  961. extern int drm_property_add_enum(struct drm_property *property, int index,
  962.                                  uint64_t value, const char *name);
  963. extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
  964. extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
  965.                                      char *formats[]);
  966. extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
  967. extern int drm_mode_create_dithering_property(struct drm_device *dev);
  968. extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
  969. extern char *drm_get_encoder_name(struct drm_encoder *encoder);
  970.  
  971. extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
  972.                                              struct drm_encoder *encoder);
  973. extern void drm_mode_connector_detach_encoder(struct drm_connector *connector,
  974.                                            struct drm_encoder *encoder);
  975. extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
  976.                                          int gamma_size);
  977. extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
  978.                 uint32_t id, uint32_t type);
  979. /* IOCTLs */
  980. extern int drm_mode_getresources(struct drm_device *dev,
  981.                                  void *data, struct drm_file *file_priv);
  982. extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
  983.                                    struct drm_file *file_priv);
  984. extern int drm_mode_getcrtc(struct drm_device *dev,
  985.                             void *data, struct drm_file *file_priv);
  986. extern int drm_mode_getconnector(struct drm_device *dev,
  987.                               void *data, struct drm_file *file_priv);
  988. extern int drm_mode_setcrtc(struct drm_device *dev,
  989.                             void *data, struct drm_file *file_priv);
  990. extern int drm_mode_getplane(struct drm_device *dev,
  991.                                void *data, struct drm_file *file_priv);
  992. extern int drm_mode_setplane(struct drm_device *dev,
  993.                                void *data, struct drm_file *file_priv);
  994. extern int drm_mode_cursor_ioctl(struct drm_device *dev,
  995.                                 void *data, struct drm_file *file_priv);
  996. extern int drm_mode_addfb(struct drm_device *dev,
  997.                           void *data, struct drm_file *file_priv);
  998. extern int drm_mode_addfb2(struct drm_device *dev,
  999.                            void *data, struct drm_file *file_priv);
  1000. extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
  1001. extern int drm_mode_rmfb(struct drm_device *dev,
  1002.                          void *data, struct drm_file *file_priv);
  1003. extern int drm_mode_getfb(struct drm_device *dev,
  1004.                           void *data, struct drm_file *file_priv);
  1005. extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
  1006.                                   void *data, struct drm_file *file_priv);
  1007. extern int drm_mode_addmode_ioctl(struct drm_device *dev,
  1008.                                   void *data, struct drm_file *file_priv);
  1009. extern int drm_mode_rmmode_ioctl(struct drm_device *dev,
  1010.                                  void *data, struct drm_file *file_priv);
  1011. extern int drm_mode_attachmode_ioctl(struct drm_device *dev,
  1012.                                      void *data, struct drm_file *file_priv);
  1013. extern int drm_mode_detachmode_ioctl(struct drm_device *dev,
  1014.                                      void *data, struct drm_file *file_priv);
  1015.  
  1016. extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
  1017.                                       void *data, struct drm_file *file_priv);
  1018. extern int drm_mode_getblob_ioctl(struct drm_device *dev,
  1019.                                   void *data, struct drm_file *file_priv);
  1020. extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
  1021.                                               void *data, struct drm_file *file_priv);
  1022. extern int drm_mode_hotplug_ioctl(struct drm_device *dev,
  1023.                                   void *data, struct drm_file *file_priv);
  1024. extern int drm_mode_replacefb(struct drm_device *dev,
  1025.                               void *data, struct drm_file *file_priv);
  1026. extern int drm_mode_getencoder(struct drm_device *dev,
  1027.                                void *data, struct drm_file *file_priv);
  1028. extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
  1029.                                     void *data, struct drm_file *file_priv);
  1030. extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
  1031.                                     void *data, struct drm_file *file_priv);
  1032. extern u8 *drm_find_cea_extension(struct edid *edid);
  1033. extern u8 drm_match_cea_mode(struct drm_display_mode *to_match);
  1034. extern bool drm_detect_hdmi_monitor(struct edid *edid);
  1035. extern bool drm_detect_monitor_audio(struct edid *edid);
  1036. extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
  1037.                                     void *data, struct drm_file *file_priv);
  1038. extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
  1039.                                 int hdisplay, int vdisplay, int vrefresh,
  1040.                                 bool reduced, bool interlaced, bool margins);
  1041. extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
  1042.                                 int hdisplay, int vdisplay, int vrefresh,
  1043.                                 bool interlaced, int margins);
  1044. extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
  1045.                                 int hdisplay, int vdisplay, int vrefresh,
  1046.                                 bool interlaced, int margins, int GTF_M,
  1047.                                 int GTF_2C, int GTF_K, int GTF_2J);
  1048. extern int drm_add_modes_noedid(struct drm_connector *connector,
  1049.                                 int hdisplay, int vdisplay);
  1050. extern uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode);
  1051.  
  1052. extern int drm_edid_header_is_valid(const u8 *raw_edid);
  1053. extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
  1054. extern bool drm_edid_is_valid(struct edid *edid);
  1055. struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
  1056.                                            int hsize, int vsize, int fresh,
  1057.                                            bool rb);
  1058.  
  1059. extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
  1060.                                       void *data, struct drm_file *file_priv);
  1061. extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
  1062.                                     void *data, struct drm_file *file_priv);
  1063. extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
  1064.                                       void *data, struct drm_file *file_priv);
  1065. extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
  1066.                                              struct drm_file *file_priv);
  1067. extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
  1068.                                            struct drm_file *file_priv);
  1069.  
  1070. extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
  1071.                                  int *bpp);
  1072. extern int drm_format_num_planes(uint32_t format);
  1073. extern int drm_format_plane_cpp(uint32_t format, int plane);
  1074. extern int drm_format_horz_chroma_subsampling(uint32_t format);
  1075. extern int drm_format_vert_chroma_subsampling(uint32_t format);
  1076.  
  1077. #endif /* __DRM_CRTC_H__ */
  1078.