cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
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drm_modes.h (18968B)


      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 * Copyright © 2014 Intel Corporation
      7 *   Daniel Vetter <daniel.vetter@ffwll.ch>
      8 *
      9 * Permission is hereby granted, free of charge, to any person obtaining a
     10 * copy of this software and associated documentation files (the "Software"),
     11 * to deal in the Software without restriction, including without limitation
     12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     13 * and/or sell copies of the Software, and to permit persons to whom the
     14 * Software is furnished to do so, subject to the following conditions:
     15 *
     16 * The above copyright notice and this permission notice shall be included in
     17 * all copies or substantial portions of the Software.
     18 *
     19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     22 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     25 * OTHER DEALINGS IN THE SOFTWARE.
     26 */
     27#ifndef __DRM_MODES_H__
     28#define __DRM_MODES_H__
     29
     30#include <linux/hdmi.h>
     31
     32#include <drm/drm_mode_object.h>
     33#include <drm/drm_connector.h>
     34
     35struct videomode;
     36
     37/*
     38 * Note on terminology:  here, for brevity and convenience, we refer to connector
     39 * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
     40 * DVI, etc.  And 'screen' refers to the whole of the visible display, which
     41 * may span multiple monitors (and therefore multiple CRTC and connector
     42 * structures).
     43 */
     44
     45/**
     46 * enum drm_mode_status - hardware support status of a mode
     47 * @MODE_OK: Mode OK
     48 * @MODE_HSYNC: hsync out of range
     49 * @MODE_VSYNC: vsync out of range
     50 * @MODE_H_ILLEGAL: mode has illegal horizontal timings
     51 * @MODE_V_ILLEGAL: mode has illegal vertical timings
     52 * @MODE_BAD_WIDTH: requires an unsupported linepitch
     53 * @MODE_NOMODE: no mode with a matching name
     54 * @MODE_NO_INTERLACE: interlaced mode not supported
     55 * @MODE_NO_DBLESCAN: doublescan mode not supported
     56 * @MODE_NO_VSCAN: multiscan mode not supported
     57 * @MODE_MEM: insufficient video memory
     58 * @MODE_VIRTUAL_X: mode width too large for specified virtual size
     59 * @MODE_VIRTUAL_Y: mode height too large for specified virtual size
     60 * @MODE_MEM_VIRT: insufficient video memory given virtual size
     61 * @MODE_NOCLOCK: no fixed clock available
     62 * @MODE_CLOCK_HIGH: clock required is too high
     63 * @MODE_CLOCK_LOW: clock required is too low
     64 * @MODE_CLOCK_RANGE: clock/mode isn't in a ClockRange
     65 * @MODE_BAD_HVALUE: horizontal timing was out of range
     66 * @MODE_BAD_VVALUE: vertical timing was out of range
     67 * @MODE_BAD_VSCAN: VScan value out of range
     68 * @MODE_HSYNC_NARROW: horizontal sync too narrow
     69 * @MODE_HSYNC_WIDE: horizontal sync too wide
     70 * @MODE_HBLANK_NARROW: horizontal blanking too narrow
     71 * @MODE_HBLANK_WIDE: horizontal blanking too wide
     72 * @MODE_VSYNC_NARROW: vertical sync too narrow
     73 * @MODE_VSYNC_WIDE: vertical sync too wide
     74 * @MODE_VBLANK_NARROW: vertical blanking too narrow
     75 * @MODE_VBLANK_WIDE: vertical blanking too wide
     76 * @MODE_PANEL: exceeds panel dimensions
     77 * @MODE_INTERLACE_WIDTH: width too large for interlaced mode
     78 * @MODE_ONE_WIDTH: only one width is supported
     79 * @MODE_ONE_HEIGHT: only one height is supported
     80 * @MODE_ONE_SIZE: only one resolution is supported
     81 * @MODE_NO_REDUCED: monitor doesn't accept reduced blanking
     82 * @MODE_NO_STEREO: stereo modes not supported
     83 * @MODE_NO_420: ycbcr 420 modes not supported
     84 * @MODE_STALE: mode has become stale
     85 * @MODE_BAD: unspecified reason
     86 * @MODE_ERROR: error condition
     87 *
     88 * This enum is used to filter out modes not supported by the driver/hardware
     89 * combination.
     90 */
     91enum drm_mode_status {
     92	MODE_OK = 0,
     93	MODE_HSYNC,
     94	MODE_VSYNC,
     95	MODE_H_ILLEGAL,
     96	MODE_V_ILLEGAL,
     97	MODE_BAD_WIDTH,
     98	MODE_NOMODE,
     99	MODE_NO_INTERLACE,
    100	MODE_NO_DBLESCAN,
    101	MODE_NO_VSCAN,
    102	MODE_MEM,
    103	MODE_VIRTUAL_X,
    104	MODE_VIRTUAL_Y,
    105	MODE_MEM_VIRT,
    106	MODE_NOCLOCK,
    107	MODE_CLOCK_HIGH,
    108	MODE_CLOCK_LOW,
    109	MODE_CLOCK_RANGE,
    110	MODE_BAD_HVALUE,
    111	MODE_BAD_VVALUE,
    112	MODE_BAD_VSCAN,
    113	MODE_HSYNC_NARROW,
    114	MODE_HSYNC_WIDE,
    115	MODE_HBLANK_NARROW,
    116	MODE_HBLANK_WIDE,
    117	MODE_VSYNC_NARROW,
    118	MODE_VSYNC_WIDE,
    119	MODE_VBLANK_NARROW,
    120	MODE_VBLANK_WIDE,
    121	MODE_PANEL,
    122	MODE_INTERLACE_WIDTH,
    123	MODE_ONE_WIDTH,
    124	MODE_ONE_HEIGHT,
    125	MODE_ONE_SIZE,
    126	MODE_NO_REDUCED,
    127	MODE_NO_STEREO,
    128	MODE_NO_420,
    129	MODE_STALE = -3,
    130	MODE_BAD = -2,
    131	MODE_ERROR = -1
    132};
    133
    134#define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
    135	.name = nm, .status = 0, .type = (t), .clock = (c), \
    136	.hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
    137	.htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
    138	.vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
    139	.vscan = (vs), .flags = (f)
    140
    141/**
    142 * DRM_SIMPLE_MODE - Simple display mode
    143 * @hd: Horizontal resolution, width
    144 * @vd: Vertical resolution, height
    145 * @hd_mm: Display width in millimeters
    146 * @vd_mm: Display height in millimeters
    147 *
    148 * This macro initializes a &drm_display_mode that only contains info about
    149 * resolution and physical size.
    150 */
    151#define DRM_SIMPLE_MODE(hd, vd, hd_mm, vd_mm) \
    152	.type = DRM_MODE_TYPE_DRIVER, .clock = 1 /* pass validation */, \
    153	.hdisplay = (hd), .hsync_start = (hd), .hsync_end = (hd), \
    154	.htotal = (hd), .vdisplay = (vd), .vsync_start = (vd), \
    155	.vsync_end = (vd), .vtotal = (vd), .width_mm = (hd_mm), \
    156	.height_mm = (vd_mm)
    157
    158#define CRTC_INTERLACE_HALVE_V	(1 << 0) /* halve V values for interlacing */
    159#define CRTC_STEREO_DOUBLE	(1 << 1) /* adjust timings for stereo modes */
    160#define CRTC_NO_DBLSCAN		(1 << 2) /* don't adjust doublescan */
    161#define CRTC_NO_VSCAN		(1 << 3) /* don't adjust doublescan */
    162#define CRTC_STEREO_DOUBLE_ONLY	(CRTC_STEREO_DOUBLE | CRTC_NO_DBLSCAN | CRTC_NO_VSCAN)
    163
    164#define DRM_MODE_FLAG_3D_MAX	DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF
    165
    166#define DRM_MODE_MATCH_TIMINGS (1 << 0)
    167#define DRM_MODE_MATCH_CLOCK (1 << 1)
    168#define DRM_MODE_MATCH_FLAGS (1 << 2)
    169#define DRM_MODE_MATCH_3D_FLAGS (1 << 3)
    170#define DRM_MODE_MATCH_ASPECT_RATIO (1 << 4)
    171
    172/**
    173 * struct drm_display_mode - DRM kernel-internal display mode structure
    174 * @hdisplay: horizontal display size
    175 * @hsync_start: horizontal sync start
    176 * @hsync_end: horizontal sync end
    177 * @htotal: horizontal total size
    178 * @hskew: horizontal skew?!
    179 * @vdisplay: vertical display size
    180 * @vsync_start: vertical sync start
    181 * @vsync_end: vertical sync end
    182 * @vtotal: vertical total size
    183 * @vscan: vertical scan?!
    184 * @crtc_hdisplay: hardware mode horizontal display size
    185 * @crtc_hblank_start: hardware mode horizontal blank start
    186 * @crtc_hblank_end: hardware mode horizontal blank end
    187 * @crtc_hsync_start: hardware mode horizontal sync start
    188 * @crtc_hsync_end: hardware mode horizontal sync end
    189 * @crtc_htotal: hardware mode horizontal total size
    190 * @crtc_hskew: hardware mode horizontal skew?!
    191 * @crtc_vdisplay: hardware mode vertical display size
    192 * @crtc_vblank_start: hardware mode vertical blank start
    193 * @crtc_vblank_end: hardware mode vertical blank end
    194 * @crtc_vsync_start: hardware mode vertical sync start
    195 * @crtc_vsync_end: hardware mode vertical sync end
    196 * @crtc_vtotal: hardware mode vertical total size
    197 *
    198 * This is the kernel API display mode information structure. For the
    199 * user-space version see struct drm_mode_modeinfo.
    200 *
    201 * The horizontal and vertical timings are defined per the following diagram.
    202 *
    203 * ::
    204 *
    205 *
    206 *               Active                 Front           Sync           Back
    207 *              Region                 Porch                          Porch
    208 *     <-----------------------><----------------><-------------><-------------->
    209 *       //////////////////////|
    210 *      ////////////////////// |
    211 *     //////////////////////  |..................               ................
    212 *                                                _______________
    213 *     <----- [hv]display ----->
    214 *     <------------- [hv]sync_start ------------>
    215 *     <--------------------- [hv]sync_end --------------------->
    216 *     <-------------------------------- [hv]total ----------------------------->*
    217 *
    218 * This structure contains two copies of timings. First are the plain timings,
    219 * which specify the logical mode, as it would be for a progressive 1:1 scanout
    220 * at the refresh rate userspace can observe through vblank timestamps. Then
    221 * there's the hardware timings, which are corrected for interlacing,
    222 * double-clocking and similar things. They are provided as a convenience, and
    223 * can be appropriately computed using drm_mode_set_crtcinfo().
    224 *
    225 * For printing you can use %DRM_MODE_FMT and DRM_MODE_ARG().
    226 */
    227struct drm_display_mode {
    228	/**
    229	 * @clock:
    230	 *
    231	 * Pixel clock in kHz.
    232	 */
    233	int clock;		/* in kHz */
    234	u16 hdisplay;
    235	u16 hsync_start;
    236	u16 hsync_end;
    237	u16 htotal;
    238	u16 hskew;
    239	u16 vdisplay;
    240	u16 vsync_start;
    241	u16 vsync_end;
    242	u16 vtotal;
    243	u16 vscan;
    244	/**
    245	 * @flags:
    246	 *
    247	 * Sync and timing flags:
    248	 *
    249	 *  - DRM_MODE_FLAG_PHSYNC: horizontal sync is active high.
    250	 *  - DRM_MODE_FLAG_NHSYNC: horizontal sync is active low.
    251	 *  - DRM_MODE_FLAG_PVSYNC: vertical sync is active high.
    252	 *  - DRM_MODE_FLAG_NVSYNC: vertical sync is active low.
    253	 *  - DRM_MODE_FLAG_INTERLACE: mode is interlaced.
    254	 *  - DRM_MODE_FLAG_DBLSCAN: mode uses doublescan.
    255	 *  - DRM_MODE_FLAG_CSYNC: mode uses composite sync.
    256	 *  - DRM_MODE_FLAG_PCSYNC: composite sync is active high.
    257	 *  - DRM_MODE_FLAG_NCSYNC: composite sync is active low.
    258	 *  - DRM_MODE_FLAG_HSKEW: hskew provided (not used?).
    259	 *  - DRM_MODE_FLAG_BCAST: <deprecated>
    260	 *  - DRM_MODE_FLAG_PIXMUX: <deprecated>
    261	 *  - DRM_MODE_FLAG_DBLCLK: double-clocked mode.
    262	 *  - DRM_MODE_FLAG_CLKDIV2: half-clocked mode.
    263	 *
    264	 * Additionally there's flags to specify how 3D modes are packed:
    265	 *
    266	 *  - DRM_MODE_FLAG_3D_NONE: normal, non-3D mode.
    267	 *  - DRM_MODE_FLAG_3D_FRAME_PACKING: 2 full frames for left and right.
    268	 *  - DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE: interleaved like fields.
    269	 *  - DRM_MODE_FLAG_3D_LINE_ALTERNATIVE: interleaved lines.
    270	 *  - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL: side-by-side full frames.
    271	 *  - DRM_MODE_FLAG_3D_L_DEPTH: ?
    272	 *  - DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH: ?
    273	 *  - DRM_MODE_FLAG_3D_TOP_AND_BOTTOM: frame split into top and bottom
    274	 *    parts.
    275	 *  - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF: frame split into left and
    276	 *    right parts.
    277	 */
    278	u32 flags;
    279
    280	/**
    281	 * @crtc_clock:
    282	 *
    283	 * Actual pixel or dot clock in the hardware. This differs from the
    284	 * logical @clock when e.g. using interlacing, double-clocking, stereo
    285	 * modes or other fancy stuff that changes the timings and signals
    286	 * actually sent over the wire.
    287	 *
    288	 * This is again in kHz.
    289	 *
    290	 * Note that with digital outputs like HDMI or DP there's usually a
    291	 * massive confusion between the dot clock and the signal clock at the
    292	 * bit encoding level. Especially when a 8b/10b encoding is used and the
    293	 * difference is exactly a factor of 10.
    294	 */
    295	int crtc_clock;
    296	u16 crtc_hdisplay;
    297	u16 crtc_hblank_start;
    298	u16 crtc_hblank_end;
    299	u16 crtc_hsync_start;
    300	u16 crtc_hsync_end;
    301	u16 crtc_htotal;
    302	u16 crtc_hskew;
    303	u16 crtc_vdisplay;
    304	u16 crtc_vblank_start;
    305	u16 crtc_vblank_end;
    306	u16 crtc_vsync_start;
    307	u16 crtc_vsync_end;
    308	u16 crtc_vtotal;
    309
    310	/**
    311	 * @width_mm:
    312	 *
    313	 * Addressable size of the output in mm, projectors should set this to
    314	 * 0.
    315	 */
    316	u16 width_mm;
    317
    318	/**
    319	 * @height_mm:
    320	 *
    321	 * Addressable size of the output in mm, projectors should set this to
    322	 * 0.
    323	 */
    324	u16 height_mm;
    325
    326	/**
    327	 * @type:
    328	 *
    329	 * A bitmask of flags, mostly about the source of a mode. Possible flags
    330	 * are:
    331	 *
    332	 *  - DRM_MODE_TYPE_PREFERRED: Preferred mode, usually the native
    333	 *    resolution of an LCD panel. There should only be one preferred
    334	 *    mode per connector at any given time.
    335	 *  - DRM_MODE_TYPE_DRIVER: Mode created by the driver, which is all of
    336	 *    them really. Drivers must set this bit for all modes they create
    337	 *    and expose to userspace.
    338	 *  - DRM_MODE_TYPE_USERDEF: Mode defined or selected via the kernel
    339	 *    command line.
    340	 *
    341	 * Plus a big list of flags which shouldn't be used at all, but are
    342	 * still around since these flags are also used in the userspace ABI.
    343	 * We no longer accept modes with these types though:
    344	 *
    345	 *  - DRM_MODE_TYPE_BUILTIN: Meant for hard-coded modes, unused.
    346	 *    Use DRM_MODE_TYPE_DRIVER instead.
    347	 *  - DRM_MODE_TYPE_DEFAULT: Again a leftover, use
    348	 *    DRM_MODE_TYPE_PREFERRED instead.
    349	 *  - DRM_MODE_TYPE_CLOCK_C and DRM_MODE_TYPE_CRTC_C: Define leftovers
    350	 *    which are stuck around for hysterical raisins only. No one has an
    351	 *    idea what they were meant for. Don't use.
    352	 */
    353	u8 type;
    354
    355	/**
    356	 * @expose_to_userspace:
    357	 *
    358	 * Indicates whether the mode is to be exposed to the userspace.
    359	 * This is to maintain a set of exposed modes while preparing
    360	 * user-mode's list in drm_mode_getconnector ioctl. The purpose of
    361	 * this only lies in the ioctl function, and is not to be used
    362	 * outside the function.
    363	 */
    364	bool expose_to_userspace;
    365
    366	/**
    367	 * @head:
    368	 *
    369	 * struct list_head for mode lists.
    370	 */
    371	struct list_head head;
    372
    373	/**
    374	 * @name:
    375	 *
    376	 * Human-readable name of the mode, filled out with drm_mode_set_name().
    377	 */
    378	char name[DRM_DISPLAY_MODE_LEN];
    379
    380	/**
    381	 * @status:
    382	 *
    383	 * Status of the mode, used to filter out modes not supported by the
    384	 * hardware. See enum &drm_mode_status.
    385	 */
    386	enum drm_mode_status status;
    387
    388	/**
    389	 * @picture_aspect_ratio:
    390	 *
    391	 * Field for setting the HDMI picture aspect ratio of a mode.
    392	 */
    393	enum hdmi_picture_aspect picture_aspect_ratio;
    394
    395};
    396
    397/**
    398 * DRM_MODE_FMT - printf string for &struct drm_display_mode
    399 */
    400#define DRM_MODE_FMT    "\"%s\": %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x"
    401
    402/**
    403 * DRM_MODE_ARG - printf arguments for &struct drm_display_mode
    404 * @m: display mode
    405 */
    406#define DRM_MODE_ARG(m) \
    407	(m)->name, drm_mode_vrefresh(m), (m)->clock, \
    408	(m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \
    409	(m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \
    410	(m)->type, (m)->flags
    411
    412#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
    413
    414/**
    415 * drm_mode_is_stereo - check for stereo mode flags
    416 * @mode: drm_display_mode to check
    417 *
    418 * Returns:
    419 * True if the mode is one of the stereo modes (like side-by-side), false if
    420 * not.
    421 */
    422static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode)
    423{
    424	return mode->flags & DRM_MODE_FLAG_3D_MASK;
    425}
    426
    427struct drm_connector;
    428struct drm_cmdline_mode;
    429
    430struct drm_display_mode *drm_mode_create(struct drm_device *dev);
    431void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
    432void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out,
    433			       const struct drm_display_mode *in);
    434int drm_mode_convert_umode(struct drm_device *dev,
    435			   struct drm_display_mode *out,
    436			   const struct drm_mode_modeinfo *in);
    437void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
    438void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
    439bool drm_mode_is_420_only(const struct drm_display_info *display,
    440			  const struct drm_display_mode *mode);
    441bool drm_mode_is_420_also(const struct drm_display_info *display,
    442			  const struct drm_display_mode *mode);
    443bool drm_mode_is_420(const struct drm_display_info *display,
    444		     const struct drm_display_mode *mode);
    445
    446struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
    447				      int hdisplay, int vdisplay, int vrefresh,
    448				      bool reduced, bool interlaced,
    449				      bool margins);
    450struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
    451				      int hdisplay, int vdisplay, int vrefresh,
    452				      bool interlaced, int margins);
    453struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
    454					      int hdisplay, int vdisplay,
    455					      int vrefresh, bool interlaced,
    456					      int margins,
    457					      int GTF_M, int GTF_2C,
    458					      int GTF_K, int GTF_2J);
    459void drm_display_mode_from_videomode(const struct videomode *vm,
    460				     struct drm_display_mode *dmode);
    461void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,
    462				   struct videomode *vm);
    463void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags);
    464
    465#if defined(CONFIG_OF)
    466int of_get_drm_display_mode(struct device_node *np,
    467			    struct drm_display_mode *dmode, u32 *bus_flags,
    468			    int index);
    469int of_get_drm_panel_display_mode(struct device_node *np,
    470				  struct drm_display_mode *dmode, u32 *bus_flags);
    471#else
    472static inline int of_get_drm_display_mode(struct device_node *np,
    473					  struct drm_display_mode *dmode,
    474					  u32 *bus_flags, int index)
    475{
    476	return -EINVAL;
    477}
    478
    479static inline int of_get_drm_panel_display_mode(struct device_node *np,
    480						struct drm_display_mode *dmode, u32 *bus_flags)
    481{
    482	return -EINVAL;
    483}
    484#endif
    485
    486void drm_mode_set_name(struct drm_display_mode *mode);
    487int drm_mode_vrefresh(const struct drm_display_mode *mode);
    488void drm_mode_get_hv_timing(const struct drm_display_mode *mode,
    489			    int *hdisplay, int *vdisplay);
    490
    491void drm_mode_set_crtcinfo(struct drm_display_mode *p,
    492			   int adjust_flags);
    493void drm_mode_copy(struct drm_display_mode *dst,
    494		   const struct drm_display_mode *src);
    495void drm_mode_init(struct drm_display_mode *dst,
    496		   const struct drm_display_mode *src);
    497struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
    498					    const struct drm_display_mode *mode);
    499bool drm_mode_match(const struct drm_display_mode *mode1,
    500		    const struct drm_display_mode *mode2,
    501		    unsigned int match_flags);
    502bool drm_mode_equal(const struct drm_display_mode *mode1,
    503		    const struct drm_display_mode *mode2);
    504bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1,
    505			      const struct drm_display_mode *mode2);
    506bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,
    507					const struct drm_display_mode *mode2);
    508
    509/* for use by the crtc helper probe functions */
    510enum drm_mode_status drm_mode_validate_driver(struct drm_device *dev,
    511					      const struct drm_display_mode *mode);
    512enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,
    513					    int maxX, int maxY);
    514enum drm_mode_status
    515drm_mode_validate_ycbcr420(const struct drm_display_mode *mode,
    516			   struct drm_connector *connector);
    517void drm_mode_prune_invalid(struct drm_device *dev,
    518			    struct list_head *mode_list, bool verbose);
    519void drm_mode_sort(struct list_head *mode_list);
    520void drm_connector_list_update(struct drm_connector *connector);
    521
    522/* parsing cmdline modes */
    523bool
    524drm_mode_parse_command_line_for_connector(const char *mode_option,
    525					  const struct drm_connector *connector,
    526					  struct drm_cmdline_mode *mode);
    527struct drm_display_mode *
    528drm_mode_create_from_cmdline_mode(struct drm_device *dev,
    529				  struct drm_cmdline_mode *cmd);
    530
    531#endif /* __DRM_MODES_H__ */