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