/* * Copyright © 2006 Keith Packard * Copyright © 2007-2008 Dave Airlie * Copyright © 2007-2008 Intel Corporation *   Jesse Barnes <jesse.barnes@intel.com> * Copyright © 2014 Intel Corporation *   Daniel Vetter <daniel.vetter@ffwll.ch> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */#ifndef __DRM_MODES_H__#define __DRM_MODES_H__ #include <linux/hdmi.h> #include <drm/drm_mode_object.h>#include <drm/drm_connector.h> struct videomode; /* * Note on terminology:  here, for brevity and convenience, we refer to connector * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS, * DVI, etc.  And 'screen' refers to the whole of the visible display, which * may span multiple monitors (and therefore multiple CRTC and connector * structures). */ /** * enum drm_mode_status - hardware support status of a mode * @MODE_OK: Mode OK * @MODE_HSYNC: hsync out of range * @MODE_VSYNC: vsync out of range * @MODE_H_ILLEGAL: mode has illegal horizontal timings * @MODE_V_ILLEGAL: mode has illegal vertical timings * @MODE_BAD_WIDTH: requires an unsupported linepitch * @MODE_NOMODE: no mode with a matching name * @MODE_NO_INTERLACE: interlaced mode not supported * @MODE_NO_DBLESCAN: doublescan mode not supported * @MODE_NO_VSCAN: multiscan mode not supported * @MODE_MEM: insufficient video memory * @MODE_VIRTUAL_X: mode width too large for specified virtual size * @MODE_VIRTUAL_Y: mode height too large for specified virtual size * @MODE_MEM_VIRT: insufficient video memory given virtual size * @MODE_NOCLOCK: no fixed clock available * @MODE_CLOCK_HIGH: clock required is too high * @MODE_CLOCK_LOW: clock required is too low * @MODE_CLOCK_RANGE: clock/mode isn't in a ClockRange * @MODE_BAD_HVALUE: horizontal timing was out of range * @MODE_BAD_VVALUE: vertical timing was out of range * @MODE_BAD_VSCAN: VScan value out of range * @MODE_HSYNC_NARROW: horizontal sync too narrow * @MODE_HSYNC_WIDE: horizontal sync too wide * @MODE_HBLANK_NARROW: horizontal blanking too narrow * @MODE_HBLANK_WIDE: horizontal blanking too wide * @MODE_VSYNC_NARROW: vertical sync too narrow * @MODE_VSYNC_WIDE: vertical sync too wide * @MODE_VBLANK_NARROW: vertical blanking too narrow * @MODE_VBLANK_WIDE: vertical blanking too wide * @MODE_PANEL: exceeds panel dimensions * @MODE_INTERLACE_WIDTH: width too large for interlaced mode * @MODE_ONE_WIDTH: only one width is supported * @MODE_ONE_HEIGHT: only one height is supported * @MODE_ONE_SIZE: only one resolution is supported * @MODE_NO_REDUCED: monitor doesn't accept reduced blanking * @MODE_NO_STEREO: stereo modes not supported * @MODE_NO_420: ycbcr 420 modes not supported * @MODE_STALE: mode has become stale * @MODE_BAD: unspecified reason * @MODE_ERROR: error condition * * This enum is used to filter out modes not supported by the driver/hardware * combination. */enum drm_mode_status {	MODE_OK = 0,	MODE_HSYNC,	MODE_VSYNC,	MODE_H_ILLEGAL,	MODE_V_ILLEGAL,	MODE_BAD_WIDTH,	MODE_NOMODE,	MODE_NO_INTERLACE,	MODE_NO_DBLESCAN,	MODE_NO_VSCAN,	MODE_MEM,	MODE_VIRTUAL_X,	MODE_VIRTUAL_Y,	MODE_MEM_VIRT,	MODE_NOCLOCK,	MODE_CLOCK_HIGH,	MODE_CLOCK_LOW,	MODE_CLOCK_RANGE,	MODE_BAD_HVALUE,	MODE_BAD_VVALUE,	MODE_BAD_VSCAN,	MODE_HSYNC_NARROW,	MODE_HSYNC_WIDE,	MODE_HBLANK_NARROW,	MODE_HBLANK_WIDE,	MODE_VSYNC_NARROW,	MODE_VSYNC_WIDE,	MODE_VBLANK_NARROW,	MODE_VBLANK_WIDE,	MODE_PANEL,	MODE_INTERLACE_WIDTH,	MODE_ONE_WIDTH,	MODE_ONE_HEIGHT,	MODE_ONE_SIZE,	MODE_NO_REDUCED,	MODE_NO_STEREO,	MODE_NO_420,	MODE_STALE = -3,	MODE_BAD = -2,	MODE_ERROR = -1}; #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \	.name = nm, .status = 0, .type = (t), .clock = (c), \	.hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \	.htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \	.vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \	.vscan = (vs), .flags = (f) /** * DRM_MODE_RES_MM - Calculates the display size from resolution and DPI * @res: The resolution in pixel * @dpi: The number of dots per inch */#define DRM_MODE_RES_MM(res, dpi)	\	(((res) * 254ul) / ((dpi) * 10ul)) #define __DRM_MODE_INIT(pix, hd, vd, hd_mm, vd_mm) \	.type = DRM_MODE_TYPE_DRIVER, .clock = (pix), \	.hdisplay = (hd), .hsync_start = (hd), .hsync_end = (hd), \	.htotal = (hd), .vdisplay = (vd), .vsync_start = (vd), \	.vsync_end = (vd), .vtotal = (vd), .width_mm = (hd_mm), \	.height_mm = (vd_mm) /** * DRM_MODE_INIT - Initialize display mode * @hz: Vertical refresh rate in Hertz * @hd: Horizontal resolution, width * @vd: Vertical resolution, height * @hd_mm: Display width in millimeters * @vd_mm: Display height in millimeters * * This macro initializes a &drm_display_mode that contains information about * refresh rate, resolution and physical size. */#define DRM_MODE_INIT(hz, hd, vd, hd_mm, vd_mm) \	__DRM_MODE_INIT((hd) * (vd) * (hz) / 1000 /* kHz */, hd, vd, hd_mm, vd_mm) /** * DRM_SIMPLE_MODE - Simple display mode * @hd: Horizontal resolution, width * @vd: Vertical resolution, height * @hd_mm: Display width in millimeters * @vd_mm: Display height in millimeters * * This macro initializes a &drm_display_mode that only contains info about * resolution and physical size. */#define DRM_SIMPLE_MODE(hd, vd, hd_mm, vd_mm) \	__DRM_MODE_INIT(1 /* pass validation */, hd, vd, hd_mm, vd_mm) #define CRTC_INTERLACE_HALVE_V	(1 << 0) /* halve V values for interlacing */#define CRTC_STEREO_DOUBLE	(1 << 1) /* adjust timings for stereo modes */#define CRTC_NO_DBLSCAN		(1 << 2) /* don't adjust doublescan */#define CRTC_NO_VSCAN		(1 << 3) /* don't adjust doublescan */#define CRTC_STEREO_DOUBLE_ONLY	(CRTC_STEREO_DOUBLE | CRTC_NO_DBLSCAN | CRTC_NO_VSCAN) #define DRM_MODE_FLAG_3D_MAX	DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF #define DRM_MODE_MATCH_TIMINGS (1 << 0)#define DRM_MODE_MATCH_CLOCK (1 << 1)#define DRM_MODE_MATCH_FLAGS (1 << 2)#define DRM_MODE_MATCH_3D_FLAGS (1 << 3)#define DRM_MODE_MATCH_ASPECT_RATIO (1 << 4)#define DRM_MODE_MATCH_TIMINGS_VRR (1 << 5) /** * struct drm_display_mode - DRM kernel-internal display mode structure * @hdisplay: horizontal display size * @hsync_start: horizontal sync start * @hsync_end: horizontal sync end * @htotal: horizontal total size * @hskew: horizontal skew?! * @vdisplay: vertical display size * @vsync_start: vertical sync start * @vsync_end: vertical sync end * @vtotal: vertical total size * @vscan: vertical scan?! * @crtc_hdisplay: hardware mode horizontal display size * @crtc_hblank_start: hardware mode horizontal blank start * @crtc_hblank_end: hardware mode horizontal blank end * @crtc_hsync_start: hardware mode horizontal sync start * @crtc_hsync_end: hardware mode horizontal sync end * @crtc_htotal: hardware mode horizontal total size * @crtc_hskew: hardware mode horizontal skew?! * @crtc_vdisplay: hardware mode vertical display size * @crtc_vblank_start: hardware mode vertical blank start * @crtc_vblank_end: hardware mode vertical blank end * @crtc_vsync_start: hardware mode vertical sync start * @crtc_vsync_end: hardware mode vertical sync end * @crtc_vtotal: hardware mode vertical total size * * This is the kernel API display mode information structure. For the * user-space version see struct drm_mode_modeinfo. * * The horizontal and vertical timings are defined per the following diagram. * * :: * * *               Active                 Front           Sync           Back *              Region                 Porch                          Porch *     <-----------------------><----------------><-------------><--------------> *       //////////////////////| *      ////////////////////// | *     //////////////////////  |..................               ................ *                                                _______________ *     <----- [hv]display -----> *     <------------- [hv]sync_start ------------> *     <--------------------- [hv]sync_end ---------------------> *     <-------------------------------- [hv]total ----------------------------->* * * This structure contains two copies of timings. First are the plain timings, * which specify the logical mode, as it would be for a progressive 1:1 scanout * at the refresh rate userspace can observe through vblank timestamps. Then * there's the hardware timings, which are corrected for interlacing, * double-clocking and similar things. They are provided as a convenience, and * can be appropriately computed using drm_mode_set_crtcinfo(). * * For printing you can use %DRM_MODE_FMT and DRM_MODE_ARG(). */struct drm_display_mode {	/**	 * @clock:	 *	 * Pixel clock in kHz.	 */	int clock;		/* in kHz */	u16 hdisplay;	u16 hsync_start;	u16 hsync_end;	u16 htotal;	u16 hskew;	u16 vdisplay;	u16 vsync_start;	u16 vsync_end;	u16 vtotal;	u16 vscan;	/**	 * @flags:	 *	 * Sync and timing flags:	 *	 *  - DRM_MODE_FLAG_PHSYNC: horizontal sync is active high.	 *  - DRM_MODE_FLAG_NHSYNC: horizontal sync is active low.	 *  - DRM_MODE_FLAG_PVSYNC: vertical sync is active high.	 *  - DRM_MODE_FLAG_NVSYNC: vertical sync is active low.	 *  - DRM_MODE_FLAG_INTERLACE: mode is interlaced.	 *  - DRM_MODE_FLAG_DBLSCAN: mode uses doublescan.	 *  - DRM_MODE_FLAG_CSYNC: mode uses composite sync.	 *  - DRM_MODE_FLAG_PCSYNC: composite sync is active high.	 *  - DRM_MODE_FLAG_NCSYNC: composite sync is active low.	 *  - DRM_MODE_FLAG_HSKEW: hskew provided (not used?).	 *  - DRM_MODE_FLAG_BCAST: <deprecated>	 *  - DRM_MODE_FLAG_PIXMUX: <deprecated>	 *  - DRM_MODE_FLAG_DBLCLK: double-clocked mode.	 *  - DRM_MODE_FLAG_CLKDIV2: half-clocked mode.	 *	 * Additionally there's flags to specify how 3D modes are packed:	 *	 *  - DRM_MODE_FLAG_3D_NONE: normal, non-3D mode.	 *  - DRM_MODE_FLAG_3D_FRAME_PACKING: 2 full frames for left and right.	 *  - DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE: interleaved like fields.	 *  - DRM_MODE_FLAG_3D_LINE_ALTERNATIVE: interleaved lines.	 *  - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL: side-by-side full frames.	 *  - DRM_MODE_FLAG_3D_L_DEPTH: ?	 *  - DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH: ?	 *  - DRM_MODE_FLAG_3D_TOP_AND_BOTTOM: frame split into top and bottom	 *    parts.	 *  - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF: frame split into left and	 *    right parts.	 */	u32 flags; 	/**	 * @crtc_clock:	 *	 * Actual pixel or dot clock in the hardware. This differs from the	 * logical @clock when e.g. using interlacing, double-clocking, stereo	 * modes or other fancy stuff that changes the timings and signals	 * actually sent over the wire.	 *	 * This is again in kHz.	 *	 * Note that with digital outputs like HDMI or DP there's usually a	 * massive confusion between the dot clock and the signal clock at the	 * bit encoding level. Especially when a 8b/10b encoding is used and the	 * difference is exactly a factor of 10.	 */	int crtc_clock;	u16 crtc_hdisplay;	u16 crtc_hblank_start;	u16 crtc_hblank_end;	u16 crtc_hsync_start;	u16 crtc_hsync_end;	u16 crtc_htotal;	u16 crtc_hskew;	u16 crtc_vdisplay;	u16 crtc_vblank_start;	u16 crtc_vblank_end;	u16 crtc_vsync_start;	u16 crtc_vsync_end;	u16 crtc_vtotal; 	/**	 * @width_mm:	 *	 * Addressable size of the output in mm, projectors should set this to	 * 0.	 */	u16 width_mm; 	/**	 * @height_mm:	 *	 * Addressable size of the output in mm, projectors should set this to	 * 0.	 */	u16 height_mm; 	/**	 * @type:	 *	 * A bitmask of flags, mostly about the source of a mode. Possible flags	 * are:	 *	 *  - DRM_MODE_TYPE_PREFERRED: Preferred mode, usually the native	 *    resolution of an LCD panel. There should only be one preferred	 *    mode per connector at any given time.	 *  - DRM_MODE_TYPE_DRIVER: Mode created by the driver, which is all of	 *    them really. Drivers must set this bit for all modes they create	 *    and expose to userspace.	 *  - DRM_MODE_TYPE_USERDEF: Mode defined or selected via the kernel	 *    command line.	 *	 * Plus a big list of flags which shouldn't be used at all, but are	 * still around since these flags are also used in the userspace ABI.	 * We no longer accept modes with these types though:	 *	 *  - DRM_MODE_TYPE_BUILTIN: Meant for hard-coded modes, unused.	 *    Use DRM_MODE_TYPE_DRIVER instead.	 *  - DRM_MODE_TYPE_DEFAULT: Again a leftover, use	 *    DRM_MODE_TYPE_PREFERRED instead.	 *  - DRM_MODE_TYPE_CLOCK_C and DRM_MODE_TYPE_CRTC_C: Define leftovers	 *    which are stuck around for hysterical raisins only. No one has an	 *    idea what they were meant for. Don't use.	 */	u8 type; 	/**	 * @expose_to_userspace:	 *	 * Indicates whether the mode is to be exposed to the userspace.	 * This is to maintain a set of exposed modes while preparing	 * user-mode's list in drm_mode_getconnector ioctl. The purpose of	 * this only lies in the ioctl function, and is not to be used	 * outside the function.	 */	bool expose_to_userspace; 	/**	 * @head:	 *	 * struct list_head for mode lists.	 */	struct list_head head; 	/**	 * @name:	 *	 * Human-readable name of the mode, filled out with drm_mode_set_name().	 */	char name[DRM_DISPLAY_MODE_LEN]; 	/**	 * @status:	 *	 * Status of the mode, used to filter out modes not supported by the	 * hardware. See enum &drm_mode_status.	 */	enum drm_mode_status status; 	/**	 * @picture_aspect_ratio:	 *	 * Field for setting the HDMI picture aspect ratio of a mode.	 */	enum hdmi_picture_aspect picture_aspect_ratio; }; /** * DRM_MODE_FMT - printf string for &struct drm_display_mode */#define DRM_MODE_FMT    "\"%s\": %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x" /** * DRM_MODE_ARG - printf arguments for &struct drm_display_mode * @m: display mode */#define DRM_MODE_ARG(m) \	(m)->name, drm_mode_vrefresh(m), (m)->clock, \	(m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \	(m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \	(m)->type, (m)->flags #define obj_to_mode(x) container_of(x, struct drm_display_mode, base) /** * drm_mode_is_stereo - check for stereo mode flags * @mode: drm_display_mode to check * * Returns: * True if the mode is one of the stereo modes (like side-by-side), false if * not. */static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode){	return mode->flags & DRM_MODE_FLAG_3D_MASK;} struct drm_connector;struct drm_cmdline_mode; struct drm_display_mode *drm_mode_create(struct drm_device *dev);void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out,			       const struct drm_display_mode *in);int drm_mode_convert_umode(struct drm_device *dev,			   struct drm_display_mode *out,			   const struct drm_mode_modeinfo *in);void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);bool drm_mode_is_420_only(const struct drm_display_info *display,			  const struct drm_display_mode *mode);bool drm_mode_is_420_also(const struct drm_display_info *display,			  const struct drm_display_mode *mode);bool drm_mode_is_420(const struct drm_display_info *display,		     const struct drm_display_mode *mode);void drm_set_preferred_mode(struct drm_connector *connector,			    int hpref, int vpref); struct drm_display_mode *drm_analog_tv_mode(struct drm_device *dev,					    enum drm_connector_tv_mode mode,					    unsigned long pixel_clock_hz,					    unsigned int hdisplay,					    unsigned int vdisplay,					    bool interlace); static inline struct drm_display_mode *drm_mode_analog_ntsc_480i(struct drm_device *dev){	return drm_analog_tv_mode(dev, DRM_MODE_TV_MODE_NTSC, 13500000, 720, 480, true);} static inline struct drm_display_mode *drm_mode_analog_pal_576i(struct drm_device *dev){	return drm_analog_tv_mode(dev, DRM_MODE_TV_MODE_PAL, 13500000, 720, 576, true);} struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,				      int hdisplay, int vdisplay, int vrefresh,				      bool reduced, bool interlaced,				      bool margins);struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,				      int hdisplay, int vdisplay, int vrefresh,				      bool interlaced, int margins);struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,					      int hdisplay, int vdisplay,					      int vrefresh, bool interlaced,

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