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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. struct drm_file;
  42. struct drm_clip_rect;
  43.  
  44. #define DRM_MODE_OBJECT_CRTC 0xcccccccc
  45. #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
  46. #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
  47. #define DRM_MODE_OBJECT_MODE 0xdededede
  48. #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
  49. #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
  50. #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
  51. #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
  52.  
  53. struct drm_mode_object {
  54.         uint32_t id;
  55.         uint32_t type;
  56.         struct drm_object_properties *properties;
  57. };
  58.  
  59. #define DRM_OBJECT_MAX_PROPERTY 24
  60. struct drm_object_properties {
  61.         int count;
  62.         uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
  63.         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
  64. };
  65.  
  66. /*
  67.  * Note on terminology:  here, for brevity and convenience, we refer to connector
  68.  * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
  69.  * DVI, etc.  And 'screen' refers to the whole of the visible display, which
  70.  * may span multiple monitors (and therefore multiple CRTC and connector
  71.  * structures).
  72.  */
  73.  
  74. enum drm_mode_status {
  75.     MODE_OK     = 0,    /* Mode OK */
  76.     MODE_HSYNC,         /* hsync out of range */
  77.     MODE_VSYNC,         /* vsync out of range */
  78.     MODE_H_ILLEGAL,     /* mode has illegal horizontal timings */
  79.     MODE_V_ILLEGAL,     /* mode has illegal horizontal timings */
  80.     MODE_BAD_WIDTH,     /* requires an unsupported linepitch */
  81.     MODE_NOMODE,        /* no mode with a matching name */
  82.     MODE_NO_INTERLACE,  /* interlaced mode not supported */
  83.     MODE_NO_DBLESCAN,   /* doublescan mode not supported */
  84.     MODE_NO_VSCAN,      /* multiscan mode not supported */
  85.     MODE_MEM,           /* insufficient video memory */
  86.     MODE_VIRTUAL_X,     /* mode width too large for specified virtual size */
  87.     MODE_VIRTUAL_Y,     /* mode height too large for specified virtual size */
  88.     MODE_MEM_VIRT,      /* insufficient video memory given virtual size */
  89.     MODE_NOCLOCK,       /* no fixed clock available */
  90.     MODE_CLOCK_HIGH,    /* clock required is too high */
  91.     MODE_CLOCK_LOW,     /* clock required is too low */
  92.     MODE_CLOCK_RANGE,   /* clock/mode isn't in a ClockRange */
  93.     MODE_BAD_HVALUE,    /* horizontal timing was out of range */
  94.     MODE_BAD_VVALUE,    /* vertical timing was out of range */
  95.     MODE_BAD_VSCAN,     /* VScan value out of range */
  96.     MODE_HSYNC_NARROW,  /* horizontal sync too narrow */
  97.     MODE_HSYNC_WIDE,    /* horizontal sync too wide */
  98.     MODE_HBLANK_NARROW, /* horizontal blanking too narrow */
  99.     MODE_HBLANK_WIDE,   /* horizontal blanking too wide */
  100.     MODE_VSYNC_NARROW,  /* vertical sync too narrow */
  101.     MODE_VSYNC_WIDE,    /* vertical sync too wide */
  102.     MODE_VBLANK_NARROW, /* vertical blanking too narrow */
  103.     MODE_VBLANK_WIDE,   /* vertical blanking too wide */
  104.     MODE_PANEL,         /* exceeds panel dimensions */
  105.     MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
  106.     MODE_ONE_WIDTH,     /* only one width is supported */
  107.     MODE_ONE_HEIGHT,    /* only one height is supported */
  108.     MODE_ONE_SIZE,      /* only one resolution is supported */
  109.     MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */
  110.     MODE_UNVERIFIED = -3, /* mode needs to reverified */
  111.     MODE_BAD = -2,      /* unspecified reason */
  112.     MODE_ERROR  = -1    /* error condition */
  113. };
  114.  
  115. #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
  116.                                     DRM_MODE_TYPE_CRTC_C)
  117.  
  118. #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
  119.         .name = nm, .status = 0, .type = (t), .clock = (c), \
  120.         .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
  121.         .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
  122.         .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
  123.         .vscan = (vs), .flags = (f), \
  124.         .base.type = DRM_MODE_OBJECT_MODE
  125.  
  126. #define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
  127.  
  128. struct drm_display_mode {
  129.         /* Header */
  130.         struct list_head head;
  131.         struct drm_mode_object base;
  132.  
  133.         char name[DRM_DISPLAY_MODE_LEN];
  134.  
  135.         enum drm_mode_status status;
  136.         unsigned int type;
  137.  
  138.         /* Proposed mode values */
  139.         int clock;              /* in kHz */
  140.         int hdisplay;
  141.         int hsync_start;
  142.         int hsync_end;
  143.         int htotal;
  144.         int hskew;
  145.         int vdisplay;
  146.         int vsync_start;
  147.         int vsync_end;
  148.         int vtotal;
  149.         int vscan;
  150.         unsigned int flags;
  151.  
  152.         /* Addressable image size (may be 0 for projectors, etc.) */
  153.         int width_mm;
  154.         int height_mm;
  155.  
  156.         /* Actual mode we give to hw */
  157.         int clock_index;
  158.         int synth_clock;
  159.         int crtc_hdisplay;
  160.         int crtc_hblank_start;
  161.         int crtc_hblank_end;
  162.         int crtc_hsync_start;
  163.         int crtc_hsync_end;
  164.         int crtc_htotal;
  165.         int crtc_hskew;
  166.         int crtc_vdisplay;
  167.         int crtc_vblank_start;
  168.         int crtc_vblank_end;
  169.         int crtc_vsync_start;
  170.         int crtc_vsync_end;
  171.         int crtc_vtotal;
  172.  
  173.         /* Driver private mode info */
  174.         int private_size;
  175.         int *private;
  176.         int private_flags;
  177.  
  178.         int vrefresh;           /* in Hz */
  179.         int hsync;              /* in kHz */
  180. };
  181.  
  182. enum drm_connector_status {
  183.         connector_status_connected = 1,
  184.         connector_status_disconnected = 2,
  185.         connector_status_unknown = 3,
  186. };
  187.  
  188. enum subpixel_order {
  189.         SubPixelUnknown = 0,
  190.         SubPixelHorizontalRGB,
  191.         SubPixelHorizontalBGR,
  192.         SubPixelVerticalRGB,
  193.         SubPixelVerticalBGR,
  194.         SubPixelNone,
  195. };
  196.  
  197. #define DRM_COLOR_FORMAT_RGB444         (1<<0)
  198. #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
  199. #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
  200. /*
  201.  * Describes a given display (e.g. CRT or flat panel) and its limitations.
  202.  */
  203. struct drm_display_info {
  204.         char name[DRM_DISPLAY_INFO_LEN];
  205.  
  206.         /* Physical size */
  207.         unsigned int width_mm;
  208.         unsigned int height_mm;
  209.  
  210.         /* Clock limits FIXME: storage format */
  211.         unsigned int min_vfreq, max_vfreq;
  212.         unsigned int min_hfreq, max_hfreq;
  213.         unsigned int pixel_clock;
  214.         unsigned int bpc;
  215.  
  216.         enum subpixel_order subpixel_order;
  217.         u32 color_formats;
  218.  
  219.         u8 cea_rev;
  220. };
  221.  
  222. struct drm_framebuffer_funcs {
  223.         /* note: use drm_framebuffer_remove() */
  224.         void (*destroy)(struct drm_framebuffer *framebuffer);
  225.         int (*create_handle)(struct drm_framebuffer *fb,
  226.                              struct drm_file *file_priv,
  227.                              unsigned int *handle);
  228.         /**
  229.          * Optinal callback for the dirty fb ioctl.
  230.          *
  231.          * Userspace can notify the driver via this callback
  232.          * that a area of the framebuffer has changed and should
  233.          * be flushed to the display hardware.
  234.          *
  235.          * See documentation in drm_mode.h for the struct
  236.          * drm_mode_fb_dirty_cmd for more information as all
  237.          * the semantics and arguments have a one to one mapping
  238.          * on this function.
  239.          */
  240.         int (*dirty)(struct drm_framebuffer *framebuffer,
  241.                      struct drm_file *file_priv, unsigned flags,
  242.                      unsigned color, struct drm_clip_rect *clips,
  243.                      unsigned num_clips);
  244. };
  245.  
  246. struct drm_framebuffer {
  247.         struct drm_device *dev;
  248.         /*
  249.          * Note that the fb is refcounted for the benefit of driver internals,
  250.          * for example some hw, disabling a CRTC/plane is asynchronous, and
  251.          * scanout does not actually complete until the next vblank.  So some
  252.          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
  253.          * should be deferred.  In cases like this, the driver would like to
  254.          * hold a ref to the fb even though it has already been removed from
  255.          * userspace perspective.
  256.          */
  257.         struct kref refcount;
  258.         /*
  259.          * Place on the dev->mode_config.fb_list, access protected by
  260.          * dev->mode_config.fb_lock.
  261.          */
  262.         struct list_head head;
  263.         struct drm_mode_object base;
  264.         const struct drm_framebuffer_funcs *funcs;
  265.         unsigned int pitches[4];
  266.         unsigned int offsets[4];
  267.         unsigned int width;
  268.         unsigned int height;
  269.         /* depth can be 15 or 16 */
  270.         unsigned int depth;
  271.         int bits_per_pixel;
  272.         int flags;
  273.         uint32_t pixel_format; /* fourcc format */
  274.         struct list_head filp_head;
  275.         /* if you are using the helper */
  276.         void *helper_private;
  277. };
  278.  
  279. struct drm_property_blob {
  280.         struct drm_mode_object base;
  281.         struct list_head head;
  282.         unsigned int length;
  283.         unsigned char data[];
  284. };
  285.  
  286. struct drm_property_enum {
  287.         uint64_t value;
  288.         struct list_head head;
  289.         char name[DRM_PROP_NAME_LEN];
  290. };
  291.  
  292. struct drm_property {
  293.     struct      list_head head;
  294.     struct      drm_mode_object base;
  295.     uint32_t    flags;
  296.     char        name[DRM_PROP_NAME_LEN];
  297.     uint32_t    num_values;
  298.     uint64_t    *values;
  299.  
  300.         struct list_head enum_blob_list;
  301. };
  302.  
  303. struct drm_crtc;
  304. struct drm_connector;
  305. struct drm_encoder;
  306. struct drm_pending_vblank_event;
  307. struct drm_plane;
  308.  
  309. /**
  310.  * drm_crtc_funcs - control CRTCs for a given device
  311.  * @save: save CRTC state
  312.  * @restore: restore CRTC state
  313.  * @reset: reset CRTC after state has been invalidated (e.g. resume)
  314.  * @cursor_set: setup the cursor
  315.  * @cursor_move: move the cursor
  316.  * @gamma_set: specify color ramp for CRTC
  317.  * @destroy: deinit and free object
  318.  * @set_property: called when a property is changed
  319.  * @set_config: apply a new CRTC configuration
  320.  * @page_flip: initiate a page flip
  321.  *
  322.  * The drm_crtc_funcs structure is the central CRTC management structure
  323.  * in the DRM.  Each CRTC controls one or more connectors (note that the name
  324.  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
  325.  * connectors, not just CRTs).
  326.  *
  327.  * Each driver is responsible for filling out this structure at startup time,
  328.  * in addition to providing other modesetting features, like i2c and DDC
  329.  * bus accessors.
  330.  */
  331. struct drm_crtc_funcs {
  332.         /* Save CRTC state */
  333.         void (*save)(struct drm_crtc *crtc); /* suspend? */
  334.         /* Restore CRTC state */
  335.         void (*restore)(struct drm_crtc *crtc); /* resume? */
  336.         /* Reset CRTC state */
  337.         void (*reset)(struct drm_crtc *crtc);
  338.  
  339.         /* cursor controls */
  340.         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
  341.                           uint32_t handle, uint32_t width, uint32_t height);
  342.         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
  343.  
  344.         /* Set gamma on the CRTC */
  345.         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
  346.                           uint32_t start, uint32_t size);
  347.         /* Object destroy routine */
  348.         void (*destroy)(struct drm_crtc *crtc);
  349.  
  350.         int (*set_config)(struct drm_mode_set *set);
  351.  
  352.         /*
  353.          * Flip to the given framebuffer.  This implements the page
  354.          * flip ioctl described in drm_mode.h, specifically, the
  355.          * implementation must return immediately and block all
  356.          * rendering to the current fb until the flip has completed.
  357.          * If userspace set the event flag in the ioctl, the event
  358.          * argument will point to an event to send back when the flip
  359.          * completes, otherwise it will be NULL.
  360.          */
  361.         int (*page_flip)(struct drm_crtc *crtc,
  362.                          struct drm_framebuffer *fb,
  363.                          struct drm_pending_vblank_event *event);
  364.  
  365.         int (*set_property)(struct drm_crtc *crtc,
  366.                             struct drm_property *property, uint64_t val);
  367. };
  368.  
  369. /**
  370.  * drm_crtc - central CRTC control structure
  371.  * @dev: parent DRM device
  372.  * @head: list management
  373.  * @base: base KMS object for ID tracking etc.
  374.  * @enabled: is this CRTC enabled?
  375.  * @mode: current mode timings
  376.  * @hwmode: mode timings as programmed to hw regs
  377.  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
  378.  *    invert the width/height of the crtc.  This is used if the driver
  379.  *    is performing 90 or 270 degree rotated scanout
  380.  * @x: x position on screen
  381.  * @y: y position on screen
  382.  * @funcs: CRTC control functions
  383.  * @gamma_size: size of gamma ramp
  384.  * @gamma_store: gamma ramp values
  385.  * @framedur_ns: precise frame timing
  386.  * @framedur_ns: precise line timing
  387.  * @pixeldur_ns: precise pixel timing
  388.  * @helper_private: mid-layer private data
  389.  * @properties: property tracking for this CRTC
  390.  *
  391.  * Each CRTC may have one or more connectors associated with it.  This structure
  392.  * allows the CRTC to be controlled.
  393.  */
  394. struct drm_crtc {
  395.         struct drm_device *dev;
  396.         struct list_head head;
  397.  
  398.         /**
  399.          * crtc mutex
  400.          *
  401.          * This provides a read lock for the overall crtc state (mode, dpms
  402.          * state, ...) and a write lock for everything which can be update
  403.          * without a full modeset (fb, cursor data, ...)
  404.          */
  405.         struct mutex mutex;
  406.  
  407.         struct drm_mode_object base;
  408.  
  409.         /* framebuffer the connector is currently bound to */
  410.         struct drm_framebuffer *fb;
  411.  
  412.         bool enabled;
  413.  
  414.         /* Requested mode from modesetting. */
  415.         struct drm_display_mode mode;
  416.  
  417.         /* Programmed mode in hw, after adjustments for encoders,
  418.          * crtc, panel scaling etc. Needed for timestamping etc.
  419.          */
  420.         struct drm_display_mode hwmode;
  421.  
  422.         bool invert_dimensions;
  423.  
  424.         int x, y;
  425.         const struct drm_crtc_funcs *funcs;
  426.  
  427.         /* CRTC gamma size for reporting to userspace */
  428.         uint32_t gamma_size;
  429.         uint16_t *gamma_store;
  430.  
  431.         /* Constants needed for precise vblank and swap timestamping. */
  432.         s64 framedur_ns, linedur_ns, pixeldur_ns;
  433.  
  434.         /* if you are using the helper */
  435.         void *helper_private;
  436.  
  437.         struct drm_object_properties properties;
  438. };
  439.  
  440.  
  441. /**
  442.  * drm_connector_funcs - control connectors on a given device
  443.  * @dpms: set power state (see drm_crtc_funcs above)
  444.  * @save: save connector state
  445.  * @restore: restore connector state
  446.  * @reset: reset connector after state has been invalidated (e.g. resume)
  447.  * @detect: is this connector active?
  448.  * @fill_modes: fill mode list for this connector
  449.  * @set_property: property for this connector may need an update
  450.  * @destroy: make object go away
  451.  * @force: notify the driver that the connector is forced on
  452.  *
  453.  * Each CRTC may have one or more connectors attached to it.  The functions
  454.  * below allow the core DRM code to control connectors, enumerate available modes,
  455.  * etc.
  456.  */
  457. struct drm_connector_funcs {
  458.         void (*dpms)(struct drm_connector *connector, int mode);
  459.         void (*save)(struct drm_connector *connector);
  460.         void (*restore)(struct drm_connector *connector);
  461.         void (*reset)(struct drm_connector *connector);
  462.  
  463.         /* Check to see if anything is attached to the connector.
  464.          * @force is set to false whilst polling, true when checking the
  465.          * connector due to user request. @force can be used by the driver
  466.          * to avoid expensive, destructive operations during automated
  467.          * probing.
  468.          */
  469.         enum drm_connector_status (*detect)(struct drm_connector *connector,
  470.                                             bool force);
  471.         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
  472.         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
  473.                              uint64_t val);
  474.         void (*destroy)(struct drm_connector *connector);
  475.         void (*force)(struct drm_connector *connector);
  476. };
  477.  
  478. /**
  479.  * drm_encoder_funcs - encoder controls
  480.  * @reset: reset state (e.g. at init or resume time)
  481.  * @destroy: cleanup and free associated data
  482.  *
  483.  * Encoders sit between CRTCs and connectors.
  484.  */
  485. struct drm_encoder_funcs {
  486.         void (*reset)(struct drm_encoder *encoder);
  487.         void (*destroy)(struct drm_encoder *encoder);
  488. };
  489.  
  490. #define DRM_CONNECTOR_MAX_UMODES 16
  491. #define DRM_CONNECTOR_LEN 32
  492. #define DRM_CONNECTOR_MAX_ENCODER 3
  493.  
  494. /**
  495.  * drm_encoder - central DRM encoder structure
  496.  * @dev: parent DRM device
  497.  * @head: list management
  498.  * @base: base KMS object
  499.  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
  500.  * @possible_crtcs: bitmask of potential CRTC bindings
  501.  * @possible_clones: bitmask of potential sibling encoders for cloning
  502.  * @crtc: currently bound CRTC
  503.  * @funcs: control functions
  504.  * @helper_private: mid-layer private data
  505.  *
  506.  * CRTCs drive pixels to encoders, which convert them into signals
  507.  * appropriate for a given connector or set of connectors.
  508.  */
  509. struct drm_encoder {
  510.         struct drm_device *dev;
  511.         struct list_head head;
  512.  
  513.         struct drm_mode_object base;
  514.         int encoder_type;
  515.         uint32_t possible_crtcs;
  516.         uint32_t possible_clones;
  517.  
  518.         struct drm_crtc *crtc;
  519.         const struct drm_encoder_funcs *funcs;
  520.         void *helper_private;
  521. };
  522.  
  523. enum drm_connector_force {
  524.         DRM_FORCE_UNSPECIFIED,
  525.         DRM_FORCE_OFF,
  526.         DRM_FORCE_ON,         /* force on analog part normally */
  527.         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
  528. };
  529.  
  530. /* should we poll this connector for connects and disconnects */
  531. /* hot plug detectable */
  532. #define DRM_CONNECTOR_POLL_HPD (1 << 0)
  533. /* poll for connections */
  534. #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
  535. /* can cleanly poll for disconnections without flickering the screen */
  536. /* DACs should rarely do this without a lot of testing */
  537. #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
  538.  
  539. #define MAX_ELD_BYTES   128
  540.  
  541. /**
  542.  * drm_connector - central DRM connector control structure
  543.  * @dev: parent DRM device
  544.  * @kdev: kernel device for sysfs attributes
  545.  * @attr: sysfs attributes
  546.  * @head: list management
  547.  * @base: base KMS object
  548.  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
  549.  * @connector_type_id: index into connector type enum
  550.  * @interlace_allowed: can this connector handle interlaced modes?
  551.  * @doublescan_allowed: can this connector handle doublescan?
  552.  * @modes: modes available on this connector (from fill_modes() + user)
  553.  * @status: one of the drm_connector_status enums (connected, not, or unknown)
  554.  * @probed_modes: list of modes derived directly from the display
  555.  * @display_info: information about attached display (e.g. from EDID)
  556.  * @funcs: connector control functions
  557.  * @edid_blob_ptr: DRM property containing EDID if present
  558.  * @properties: property tracking for this connector
  559.  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
  560.  * @dpms: current dpms state
  561.  * @helper_private: mid-layer private data
  562.  * @force: a %DRM_FORCE_<foo> state for forced mode sets
  563.  * @encoder_ids: valid encoders for this connector
  564.  * @encoder: encoder driving this connector, if any
  565.  * @eld: EDID-like data, if present
  566.  * @dvi_dual: dual link DVI, if found
  567.  * @max_tmds_clock: max clock rate, if found
  568.  * @latency_present: AV delay info from ELD, if found
  569.  * @video_latency: video latency info from ELD, if found
  570.  * @audio_latency: audio latency info from ELD, if found
  571.  * @null_edid_counter: track sinks that give us all zeros for the EDID
  572.  *
  573.  * Each connector may be connected to one or more CRTCs, or may be clonable by
  574.  * another connector if they can share a CRTC.  Each connector also has a specific
  575.  * position in the broader display (referred to as a 'screen' though it could
  576.  * span multiple monitors).
  577.  */
  578. struct drm_connector {
  579.         struct drm_device *dev;
  580.         struct device kdev;
  581.         struct device_attribute *attr;
  582.         struct list_head head;
  583.  
  584.         struct drm_mode_object base;
  585.  
  586.         int connector_type;
  587.         int connector_type_id;
  588.         bool interlace_allowed;
  589.         bool doublescan_allowed;
  590.         struct list_head modes; /* list of modes on this connector */
  591.  
  592.         enum drm_connector_status status;
  593.  
  594.         /* these are modes added by probing with DDC or the BIOS */
  595.         struct list_head probed_modes;
  596.  
  597.         struct drm_display_info display_info;
  598.         const struct drm_connector_funcs *funcs;
  599.  
  600.         struct drm_property_blob *edid_blob_ptr;
  601.         struct drm_object_properties properties;
  602.  
  603.         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
  604.  
  605.         /* requested DPMS state */
  606.         int dpms;
  607.  
  608.         void *helper_private;
  609.  
  610.         /* forced on connector */
  611.         enum drm_connector_force force;
  612.         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
  613.         struct drm_encoder *encoder; /* currently active encoder */
  614.  
  615.         /* EDID bits */
  616.         uint8_t eld[MAX_ELD_BYTES];
  617.         bool dvi_dual;
  618.         int max_tmds_clock;     /* in MHz */
  619.         bool latency_present[2];
  620.         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
  621.         int audio_latency[2];
  622.         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
  623.         unsigned bad_edid_counter;
  624. };
  625.  
  626. /**
  627.  * drm_plane_funcs - driver plane control functions
  628.  * @update_plane: update the plane configuration
  629.  * @disable_plane: shut down the plane
  630.  * @destroy: clean up plane resources
  631.  * @set_property: called when a property is changed
  632.  */
  633. struct drm_plane_funcs {
  634.         int (*update_plane)(struct drm_plane *plane,
  635.                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
  636.                             int crtc_x, int crtc_y,
  637.                             unsigned int crtc_w, unsigned int crtc_h,
  638.                             uint32_t src_x, uint32_t src_y,
  639.                             uint32_t src_w, uint32_t src_h);
  640.         int (*disable_plane)(struct drm_plane *plane);
  641.         void (*destroy)(struct drm_plane *plane);
  642.  
  643.         int (*set_property)(struct drm_plane *plane,
  644.                             struct drm_property *property, uint64_t val);
  645. };
  646.  
  647. /**
  648.  * drm_plane - central DRM plane control structure
  649.  * @dev: DRM device this plane belongs to
  650.  * @head: for list management
  651.  * @base: base mode object
  652.  * @possible_crtcs: pipes this plane can be bound to
  653.  * @format_types: array of formats supported by this plane
  654.  * @format_count: number of formats supported
  655.  * @crtc: currently bound CRTC
  656.  * @fb: currently bound fb
  657.  * @gamma_size: size of gamma table
  658.  * @gamma_store: gamma correction table
  659.  * @enabled: enabled flag
  660.  * @funcs: helper functions
  661.  * @helper_private: storage for drver layer
  662.  * @properties: property tracking for this plane
  663.  */
  664. struct drm_plane {
  665.         struct drm_device *dev;
  666.         struct list_head head;
  667.  
  668.         struct drm_mode_object base;
  669.  
  670.         uint32_t possible_crtcs;
  671.         uint32_t *format_types;
  672.         uint32_t format_count;
  673.  
  674.         struct drm_crtc *crtc;
  675.         struct drm_framebuffer *fb;
  676.  
  677.         /* CRTC gamma size for reporting to userspace */
  678.         uint32_t gamma_size;
  679.         uint16_t *gamma_store;
  680.  
  681.         bool enabled;
  682.  
  683.         const struct drm_plane_funcs *funcs;
  684.         void *helper_private;
  685.  
  686.         struct drm_object_properties properties;
  687. };
  688.  
  689. /**
  690.  * drm_mode_set - new values for a CRTC config change
  691.  * @head: list management
  692.  * @fb: framebuffer to use for new config
  693.  * @crtc: CRTC whose configuration we're about to change
  694.  * @mode: mode timings to use
  695.  * @x: position of this CRTC relative to @fb
  696.  * @y: position of this CRTC relative to @fb
  697.  * @connectors: array of connectors to drive with this CRTC if possible
  698.  * @num_connectors: size of @connectors array
  699.  *
  700.  * Represents a single crtc the connectors that it drives with what mode
  701.  * and from which framebuffer it scans out from.
  702.  *
  703.  * This is used to set modes.
  704.  */
  705. struct drm_mode_set {
  706.         struct drm_framebuffer *fb;
  707.         struct drm_crtc *crtc;
  708.         struct drm_display_mode *mode;
  709.  
  710.         uint32_t x;
  711.         uint32_t y;
  712.  
  713.         struct drm_connector **connectors;
  714.         size_t num_connectors;
  715. };
  716.  
  717. /**
  718.  * struct drm_mode_config_funcs - basic driver provided mode setting functions
  719.  * @fb_create: create a new framebuffer object
  720.  * @output_poll_changed: function to handle output configuration changes
  721.  *
  722.  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
  723.  * involve drivers.
  724.  */
  725. struct drm_mode_config_funcs {
  726.         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
  727.                                              struct drm_file *file_priv,
  728.                                              struct drm_mode_fb_cmd2 *mode_cmd);
  729.         void (*output_poll_changed)(struct drm_device *dev);
  730. };
  731.  
  732. /**
  733.  * drm_mode_group - group of mode setting resources for potential sub-grouping
  734.  * @num_crtcs: CRTC count
  735.  * @num_encoders: encoder count
  736.  * @num_connectors: connector count
  737.  * @id_list: list of KMS object IDs in this group
  738.  *
  739.  * Currently this simply tracks the global mode setting state.  But in the
  740.  * future it could allow groups of objects to be set aside into independent
  741.  * control groups for use by different user level processes (e.g. two X servers
  742.  * running simultaneously on different heads, each with their own mode
  743.  * configuration and freedom of mode setting).
  744.  */
  745. struct drm_mode_group {
  746.         uint32_t num_crtcs;
  747.         uint32_t num_encoders;
  748.         uint32_t num_connectors;
  749.  
  750.         /* list of object IDs for this group */
  751.         uint32_t *id_list;
  752. };
  753.  
  754. /**
  755.  * drm_mode_config - Mode configuration control structure
  756.  * @mutex: mutex protecting KMS related lists and structures
  757.  * @idr_mutex: mutex for KMS ID allocation and management
  758.  * @crtc_idr: main KMS ID tracking object
  759.  * @num_fb: number of fbs available
  760.  * @fb_list: list of framebuffers available
  761.  * @num_connector: number of connectors on this device
  762.  * @connector_list: list of connector objects
  763.  * @num_encoder: number of encoders on this device
  764.  * @encoder_list: list of encoder objects
  765.  * @num_crtc: number of CRTCs on this device
  766.  * @crtc_list: list of CRTC objects
  767.  * @min_width: minimum pixel width on this device
  768.  * @min_height: minimum pixel height on this device
  769.  * @max_width: maximum pixel width on this device
  770.  * @max_height: maximum pixel height on this device
  771.  * @funcs: core driver provided mode setting functions
  772.  * @fb_base: base address of the framebuffer
  773.  * @poll_enabled: track polling status for this device
  774.  * @output_poll_work: delayed work for polling in process context
  775.  * @*_property: core property tracking
  776.  *
  777.  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
  778.  * enumerated by the driver are added here, as are global properties.  Some
  779.  * global restrictions are also here, e.g. dimension restrictions.
  780.  */
  781. struct drm_mode_config {
  782.         struct mutex mutex; /* protects configuration (mode lists etc.) */
  783.         struct mutex idr_mutex; /* for IDR management */
  784.     struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
  785.         /* this is limited to one for now */
  786.  
  787.  
  788.         /**
  789.          * fb_lock - mutex to protect fb state
  790.          *
  791.          * Besides the global fb list his also protects the fbs list in the
  792.          * file_priv
  793.          */
  794.         struct mutex fb_lock;
  795.         int num_fb;
  796.         struct list_head fb_list;
  797.  
  798.         int num_connector;
  799.         struct list_head connector_list;
  800.         int num_encoder;
  801.         struct list_head encoder_list;
  802.         int num_plane;
  803.         struct list_head plane_list;
  804.  
  805.         int num_crtc;
  806.         struct list_head crtc_list;
  807.  
  808.         struct list_head property_list;
  809.  
  810.         int min_width, min_height;
  811.         int max_width, max_height;
  812.         const struct drm_mode_config_funcs *funcs;
  813.         resource_size_t fb_base;
  814.  
  815.         /* output poll support */
  816.         bool poll_enabled;
  817.         bool poll_running;
  818.         struct delayed_work output_poll_work;
  819.  
  820.         /* pointers to standard properties */
  821.         struct list_head property_blob_list;
  822.         struct drm_property *edid_property;
  823.         struct drm_property *dpms_property;
  824.  
  825.         /* DVI-I properties */
  826.         struct drm_property *dvi_i_subconnector_property;
  827.         struct drm_property *dvi_i_select_subconnector_property;
  828.  
  829.         /* TV properties */
  830.         struct drm_property *tv_subconnector_property;
  831.         struct drm_property *tv_select_subconnector_property;
  832.         struct drm_property *tv_mode_property;
  833.         struct drm_property *tv_left_margin_property;
  834.         struct drm_property *tv_right_margin_property;
  835.         struct drm_property *tv_top_margin_property;
  836.         struct drm_property *tv_bottom_margin_property;
  837.         struct drm_property *tv_brightness_property;
  838.         struct drm_property *tv_contrast_property;
  839.         struct drm_property *tv_flicker_reduction_property;
  840.         struct drm_property *tv_overscan_property;
  841.         struct drm_property *tv_saturation_property;
  842.         struct drm_property *tv_hue_property;
  843.  
  844.         /* Optional properties */
  845.         struct drm_property *scaling_mode_property;
  846.         struct drm_property *dithering_mode_property;
  847.         struct drm_property *dirty_info_property;
  848.  
  849.         /* dumb ioctl parameters */
  850.         uint32_t preferred_depth, prefer_shadow;
  851. };
  852.  
  853. #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
  854. #define obj_to_connector(x) container_of(x, struct drm_connector, base)
  855. #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
  856. #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
  857. #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
  858. #define obj_to_property(x) container_of(x, struct drm_property, base)
  859. #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
  860. #define obj_to_plane(x) container_of(x, struct drm_plane, base)
  861.  
  862. struct drm_prop_enum_list {
  863.         int type;
  864.         char *name;
  865. };
  866.  
  867. extern void drm_modeset_lock_all(struct drm_device *dev);
  868. extern void drm_modeset_unlock_all(struct drm_device *dev);
  869. extern void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
  870.  
  871. extern int drm_crtc_init(struct drm_device *dev,
  872.                           struct drm_crtc *crtc,
  873.                           const struct drm_crtc_funcs *funcs);
  874. extern void drm_crtc_cleanup(struct drm_crtc *crtc);
  875.  
  876. extern int drm_connector_init(struct drm_device *dev,
  877.                             struct drm_connector *connector,
  878.                             const struct drm_connector_funcs *funcs,
  879.                             int connector_type);
  880.  
  881. extern void drm_connector_cleanup(struct drm_connector *connector);
  882. /* helper to unplug all connectors from sysfs for device */
  883. extern void drm_connector_unplug_all(struct drm_device *dev);
  884.  
  885. extern int drm_encoder_init(struct drm_device *dev,
  886.                              struct drm_encoder *encoder,
  887.                              const struct drm_encoder_funcs *funcs,
  888.                              int encoder_type);
  889.  
  890. extern int drm_plane_init(struct drm_device *dev,
  891.                           struct drm_plane *plane,
  892.                           unsigned long possible_crtcs,
  893.                           const struct drm_plane_funcs *funcs,
  894.                           const uint32_t *formats, uint32_t format_count,
  895.                           bool priv);
  896. extern void drm_plane_cleanup(struct drm_plane *plane);
  897.  
  898. extern void drm_encoder_cleanup(struct drm_encoder *encoder);
  899.  
  900. extern char *drm_get_connector_name(struct drm_connector *connector);
  901. extern char *drm_get_dpms_name(int val);
  902. extern char *drm_get_dvi_i_subconnector_name(int val);
  903. extern char *drm_get_dvi_i_select_name(int val);
  904. extern char *drm_get_tv_subconnector_name(int val);
  905. extern char *drm_get_tv_select_name(int val);
  906. extern void drm_fb_release(struct drm_file *file_priv);
  907. extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
  908. extern bool drm_probe_ddc(struct i2c_adapter *adapter);
  909. extern struct edid *drm_get_edid(struct drm_connector *connector,
  910.                                  struct i2c_adapter *adapter);
  911. extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
  912. extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
  913. extern void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode);
  914. extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);
  915. extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
  916.                                                    const struct drm_display_mode *mode);
  917. extern void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
  918. extern void drm_mode_config_init(struct drm_device *dev);
  919. extern void drm_mode_config_reset(struct drm_device *dev);
  920. extern void drm_mode_config_cleanup(struct drm_device *dev);
  921. extern void drm_mode_set_name(struct drm_display_mode *mode);
  922. extern bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);
  923. extern bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);
  924. extern int drm_mode_width(const struct drm_display_mode *mode);
  925. extern int drm_mode_height(const struct drm_display_mode *mode);
  926.  
  927. /* for us by fb module */
  928. extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
  929. extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
  930. extern void drm_mode_list_concat(struct list_head *head,
  931.                 struct list_head *new);
  932. extern void drm_mode_validate_size(struct drm_device *dev,
  933.                   struct list_head *mode_list,
  934.                   int maxX, int maxY, int maxPitch);
  935. extern void drm_mode_validate_clocks(struct drm_device *dev,
  936.                                      struct list_head *mode_list,
  937.                                      int *min, int *max, int n_ranges);
  938. extern void drm_mode_prune_invalid(struct drm_device *dev,
  939.                   struct list_head *mode_list, bool verbose);
  940. extern void drm_mode_sort(struct list_head *mode_list);
  941. extern int drm_mode_hsync(const struct drm_display_mode *mode);
  942. extern int drm_mode_vrefresh(const struct drm_display_mode *mode);
  943. extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
  944.                                   int adjust_flags);
  945. extern void drm_mode_connector_list_update(struct drm_connector *connector);
  946. extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
  947.                        struct edid *edid);
  948. extern int drm_object_property_set_value(struct drm_mode_object *obj,
  949.                                          struct drm_property *property,
  950.                                          uint64_t val);
  951. extern int drm_object_property_get_value(struct drm_mode_object *obj,
  952.                                          struct drm_property *property,
  953.                                          uint64_t *value);
  954. extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
  955. extern void drm_framebuffer_set_object(struct drm_device *dev,
  956.                                        unsigned long handle);
  957. extern int drm_framebuffer_init(struct drm_device *dev,
  958.                                 struct drm_framebuffer *fb,
  959.                                 const struct drm_framebuffer_funcs *funcs);
  960. extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
  961.                                                       uint32_t id);
  962. extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
  963. extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
  964. extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
  965. extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
  966. extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
  967. extern int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc);
  968. extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb);
  969. extern void drm_crtc_probe_connector_modes(struct drm_device *dev, int maxX, int maxY);
  970. extern bool drm_crtc_in_use(struct drm_crtc *crtc);
  971.  
  972. extern void drm_object_attach_property(struct drm_mode_object *obj,
  973.                                        struct drm_property *property,
  974.                                        uint64_t init_val);
  975. extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
  976.                                                 const char *name, int num_values);
  977. extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
  978.                                          const char *name,
  979.                                          const struct drm_prop_enum_list *props,
  980.                                          int num_values);
  981. struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
  982.                                          int flags, const char *name,
  983.                                          const struct drm_prop_enum_list *props,
  984.                                          int num_values);
  985. struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
  986.                                          const char *name,
  987.                                          uint64_t min, uint64_t max);
  988. extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
  989. extern int drm_property_add_enum(struct drm_property *property, int index,
  990.                                  uint64_t value, const char *name);
  991. extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
  992. extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
  993.                                      char *formats[]);
  994. extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
  995. extern int drm_mode_create_dithering_property(struct drm_device *dev);
  996. extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
  997. extern char *drm_get_encoder_name(struct drm_encoder *encoder);
  998.  
  999. extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
  1000.                                              struct drm_encoder *encoder);
  1001. extern void drm_mode_connector_detach_encoder(struct drm_connector *connector,
  1002.                                            struct drm_encoder *encoder);
  1003. extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
  1004.                                          int gamma_size);
  1005. extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
  1006.                 uint32_t id, uint32_t type);
  1007. /* IOCTLs */
  1008. extern int drm_mode_getresources(struct drm_device *dev,
  1009.                                  void *data, struct drm_file *file_priv);
  1010. extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
  1011.                                    struct drm_file *file_priv);
  1012. extern int drm_mode_getcrtc(struct drm_device *dev,
  1013.                             void *data, struct drm_file *file_priv);
  1014. extern int drm_mode_getconnector(struct drm_device *dev,
  1015.                               void *data, struct drm_file *file_priv);
  1016. extern int drm_mode_set_config_internal(struct drm_mode_set *set);
  1017. extern int drm_mode_setcrtc(struct drm_device *dev,
  1018.                             void *data, struct drm_file *file_priv);
  1019. extern int drm_mode_getplane(struct drm_device *dev,
  1020.                                void *data, struct drm_file *file_priv);
  1021. extern int drm_mode_setplane(struct drm_device *dev,
  1022.                                void *data, struct drm_file *file_priv);
  1023. extern int drm_mode_cursor_ioctl(struct drm_device *dev,
  1024.                                 void *data, struct drm_file *file_priv);
  1025. extern int drm_mode_addfb(struct drm_device *dev,
  1026.                           void *data, struct drm_file *file_priv);
  1027. extern int drm_mode_addfb2(struct drm_device *dev,
  1028.                            void *data, struct drm_file *file_priv);
  1029. extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
  1030. extern int drm_mode_rmfb(struct drm_device *dev,
  1031.                          void *data, struct drm_file *file_priv);
  1032. extern int drm_mode_getfb(struct drm_device *dev,
  1033.                           void *data, struct drm_file *file_priv);
  1034. extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
  1035.                                   void *data, struct drm_file *file_priv);
  1036.  
  1037. extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
  1038.                                       void *data, struct drm_file *file_priv);
  1039. extern int drm_mode_getblob_ioctl(struct drm_device *dev,
  1040.                                   void *data, struct drm_file *file_priv);
  1041. extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
  1042.                                               void *data, struct drm_file *file_priv);
  1043. extern int drm_mode_hotplug_ioctl(struct drm_device *dev,
  1044.                                   void *data, struct drm_file *file_priv);
  1045. extern int drm_mode_replacefb(struct drm_device *dev,
  1046.                               void *data, struct drm_file *file_priv);
  1047. extern int drm_mode_getencoder(struct drm_device *dev,
  1048.                                void *data, struct drm_file *file_priv);
  1049. extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
  1050.                                     void *data, struct drm_file *file_priv);
  1051. extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
  1052.                                     void *data, struct drm_file *file_priv);
  1053. extern u8 *drm_find_cea_extension(struct edid *edid);
  1054. extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
  1055. extern bool drm_detect_hdmi_monitor(struct edid *edid);
  1056. extern bool drm_detect_monitor_audio(struct edid *edid);
  1057. extern bool drm_rgb_quant_range_selectable(struct edid *edid);
  1058. extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
  1059.                                     void *data, struct drm_file *file_priv);
  1060. extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
  1061.                                 int hdisplay, int vdisplay, int vrefresh,
  1062.                                 bool reduced, bool interlaced, bool margins);
  1063. extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
  1064.                                 int hdisplay, int vdisplay, int vrefresh,
  1065.                                 bool interlaced, int margins);
  1066. extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
  1067.                                 int hdisplay, int vdisplay, int vrefresh,
  1068.                                 bool interlaced, int margins, int GTF_M,
  1069.                                 int GTF_2C, int GTF_K, int GTF_2J);
  1070. extern int drm_add_modes_noedid(struct drm_connector *connector,
  1071.                                 int hdisplay, int vdisplay);
  1072.  
  1073. extern int drm_edid_header_is_valid(const u8 *raw_edid);
  1074. extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
  1075. extern bool drm_edid_is_valid(struct edid *edid);
  1076. struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
  1077.                                            int hsize, int vsize, int fresh,
  1078.                                            bool rb);
  1079.  
  1080. extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
  1081.                                       void *data, struct drm_file *file_priv);
  1082. extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
  1083.                                     void *data, struct drm_file *file_priv);
  1084. extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
  1085.                                       void *data, struct drm_file *file_priv);
  1086. extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
  1087.                                              struct drm_file *file_priv);
  1088. extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
  1089.                                            struct drm_file *file_priv);
  1090.  
  1091. extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
  1092.                                  int *bpp);
  1093. extern int drm_format_num_planes(uint32_t format);
  1094. extern int drm_format_plane_cpp(uint32_t format, int plane);
  1095. extern int drm_format_horz_chroma_subsampling(uint32_t format);
  1096. extern int drm_format_vert_chroma_subsampling(uint32_t format);
  1097.  
  1098. #endif /* __DRM_CRTC_H__ */
  1099.