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521 lines
18 KiB
521 lines
18 KiB
/* |
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* Copyright © 2006 Keith Packard |
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* Copyright © 2007-2008 Dave Airlie |
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* Copyright © 2007-2008 Intel Corporation |
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* Jesse Barnes <[email protected]> |
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* Copyright © 2014 Intel Corporation |
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* Daniel Vetter <[email protected]> |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the "Software"), |
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* to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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* and/or sell copies of the Software, and to permit persons to whom the |
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* Software is furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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* OTHER DEALINGS IN THE SOFTWARE. |
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*/ |
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#ifndef __DRM_MODES_H__ |
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#define __DRM_MODES_H__ |
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#include <linux/hdmi.h> |
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#include <drm/drm_mode_object.h> |
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#include <drm/drm_connector.h> |
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struct videomode; |
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|
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/* |
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* Note on terminology: here, for brevity and convenience, we refer to connector |
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* control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS, |
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* DVI, etc. And 'screen' refers to the whole of the visible display, which |
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* may span multiple monitors (and therefore multiple CRTC and connector |
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* structures). |
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*/ |
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|
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/** |
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* enum drm_mode_status - hardware support status of a mode |
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* @MODE_OK: Mode OK |
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* @MODE_HSYNC: hsync out of range |
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* @MODE_VSYNC: vsync out of range |
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* @MODE_H_ILLEGAL: mode has illegal horizontal timings |
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* @MODE_V_ILLEGAL: mode has illegal vertical timings |
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* @MODE_BAD_WIDTH: requires an unsupported linepitch |
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* @MODE_NOMODE: no mode with a matching name |
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* @MODE_NO_INTERLACE: interlaced mode not supported |
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* @MODE_NO_DBLESCAN: doublescan mode not supported |
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* @MODE_NO_VSCAN: multiscan mode not supported |
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* @MODE_MEM: insufficient video memory |
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* @MODE_VIRTUAL_X: mode width too large for specified virtual size |
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* @MODE_VIRTUAL_Y: mode height too large for specified virtual size |
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* @MODE_MEM_VIRT: insufficient video memory given virtual size |
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* @MODE_NOCLOCK: no fixed clock available |
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* @MODE_CLOCK_HIGH: clock required is too high |
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* @MODE_CLOCK_LOW: clock required is too low |
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* @MODE_CLOCK_RANGE: clock/mode isn't in a ClockRange |
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* @MODE_BAD_HVALUE: horizontal timing was out of range |
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* @MODE_BAD_VVALUE: vertical timing was out of range |
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* @MODE_BAD_VSCAN: VScan value out of range |
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* @MODE_HSYNC_NARROW: horizontal sync too narrow |
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* @MODE_HSYNC_WIDE: horizontal sync too wide |
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* @MODE_HBLANK_NARROW: horizontal blanking too narrow |
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* @MODE_HBLANK_WIDE: horizontal blanking too wide |
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* @MODE_VSYNC_NARROW: vertical sync too narrow |
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* @MODE_VSYNC_WIDE: vertical sync too wide |
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* @MODE_VBLANK_NARROW: vertical blanking too narrow |
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* @MODE_VBLANK_WIDE: vertical blanking too wide |
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* @MODE_PANEL: exceeds panel dimensions |
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* @MODE_INTERLACE_WIDTH: width too large for interlaced mode |
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* @MODE_ONE_WIDTH: only one width is supported |
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* @MODE_ONE_HEIGHT: only one height is supported |
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* @MODE_ONE_SIZE: only one resolution is supported |
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* @MODE_NO_REDUCED: monitor doesn't accept reduced blanking |
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* @MODE_NO_STEREO: stereo modes not supported |
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* @MODE_NO_420: ycbcr 420 modes not supported |
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* @MODE_STALE: mode has become stale |
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* @MODE_BAD: unspecified reason |
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* @MODE_ERROR: error condition |
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* |
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* This enum is used to filter out modes not supported by the driver/hardware |
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* combination. |
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*/ |
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enum drm_mode_status { |
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MODE_OK = 0, |
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MODE_HSYNC, |
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MODE_VSYNC, |
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MODE_H_ILLEGAL, |
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MODE_V_ILLEGAL, |
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MODE_BAD_WIDTH, |
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MODE_NOMODE, |
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MODE_NO_INTERLACE, |
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MODE_NO_DBLESCAN, |
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MODE_NO_VSCAN, |
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MODE_MEM, |
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MODE_VIRTUAL_X, |
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MODE_VIRTUAL_Y, |
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MODE_MEM_VIRT, |
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MODE_NOCLOCK, |
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MODE_CLOCK_HIGH, |
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MODE_CLOCK_LOW, |
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MODE_CLOCK_RANGE, |
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MODE_BAD_HVALUE, |
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MODE_BAD_VVALUE, |
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MODE_BAD_VSCAN, |
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MODE_HSYNC_NARROW, |
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MODE_HSYNC_WIDE, |
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MODE_HBLANK_NARROW, |
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MODE_HBLANK_WIDE, |
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MODE_VSYNC_NARROW, |
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MODE_VSYNC_WIDE, |
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MODE_VBLANK_NARROW, |
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MODE_VBLANK_WIDE, |
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MODE_PANEL, |
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MODE_INTERLACE_WIDTH, |
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MODE_ONE_WIDTH, |
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MODE_ONE_HEIGHT, |
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MODE_ONE_SIZE, |
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MODE_NO_REDUCED, |
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MODE_NO_STEREO, |
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MODE_NO_420, |
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MODE_STALE = -3, |
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MODE_BAD = -2, |
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MODE_ERROR = -1 |
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}; |
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#define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \ |
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.name = nm, .status = 0, .type = (t), .clock = (c), \ |
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.hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \ |
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.htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \ |
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.vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \ |
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.vscan = (vs), .flags = (f) |
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/** |
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* DRM_SIMPLE_MODE - Simple display mode |
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* @hd: Horizontal resolution, width |
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* @vd: Vertical resolution, height |
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* @hd_mm: Display width in millimeters |
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* @vd_mm: Display height in millimeters |
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* |
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* This macro initializes a &drm_display_mode that only contains info about |
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* resolution and physical size. |
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*/ |
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#define DRM_SIMPLE_MODE(hd, vd, hd_mm, vd_mm) \ |
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.type = DRM_MODE_TYPE_DRIVER, .clock = 1 /* pass validation */, \ |
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.hdisplay = (hd), .hsync_start = (hd), .hsync_end = (hd), \ |
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.htotal = (hd), .vdisplay = (vd), .vsync_start = (vd), \ |
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.vsync_end = (vd), .vtotal = (vd), .width_mm = (hd_mm), \ |
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.height_mm = (vd_mm) |
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#define CRTC_INTERLACE_HALVE_V (1 << 0) /* halve V values for interlacing */ |
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#define CRTC_STEREO_DOUBLE (1 << 1) /* adjust timings for stereo modes */ |
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#define CRTC_NO_DBLSCAN (1 << 2) /* don't adjust doublescan */ |
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#define CRTC_NO_VSCAN (1 << 3) /* don't adjust doublescan */ |
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#define CRTC_STEREO_DOUBLE_ONLY (CRTC_STEREO_DOUBLE | CRTC_NO_DBLSCAN | CRTC_NO_VSCAN) |
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#define DRM_MODE_FLAG_3D_MAX DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF |
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#define DRM_MODE_MATCH_TIMINGS (1 << 0) |
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#define DRM_MODE_MATCH_CLOCK (1 << 1) |
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#define DRM_MODE_MATCH_FLAGS (1 << 2) |
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#define DRM_MODE_MATCH_3D_FLAGS (1 << 3) |
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#define DRM_MODE_MATCH_ASPECT_RATIO (1 << 4) |
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/** |
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* struct drm_display_mode - DRM kernel-internal display mode structure |
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* @hdisplay: horizontal display size |
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* @hsync_start: horizontal sync start |
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* @hsync_end: horizontal sync end |
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* @htotal: horizontal total size |
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* @hskew: horizontal skew?! |
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* @vdisplay: vertical display size |
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* @vsync_start: vertical sync start |
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* @vsync_end: vertical sync end |
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* @vtotal: vertical total size |
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* @vscan: vertical scan?! |
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* @crtc_hdisplay: hardware mode horizontal display size |
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* @crtc_hblank_start: hardware mode horizontal blank start |
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* @crtc_hblank_end: hardware mode horizontal blank end |
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* @crtc_hsync_start: hardware mode horizontal sync start |
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* @crtc_hsync_end: hardware mode horizontal sync end |
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* @crtc_htotal: hardware mode horizontal total size |
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* @crtc_hskew: hardware mode horizontal skew?! |
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* @crtc_vdisplay: hardware mode vertical display size |
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* @crtc_vblank_start: hardware mode vertical blank start |
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* @crtc_vblank_end: hardware mode vertical blank end |
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* @crtc_vsync_start: hardware mode vertical sync start |
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* @crtc_vsync_end: hardware mode vertical sync end |
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* @crtc_vtotal: hardware mode vertical total size |
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* |
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* This is the kernel API display mode information structure. For the |
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* user-space version see struct drm_mode_modeinfo. |
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* |
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* The horizontal and vertical timings are defined per the following diagram. |
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* |
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* :: |
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* |
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* |
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* Active Front Sync Back |
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* Region Porch Porch |
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* <-----------------------><----------------><-------------><--------------> |
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* //////////////////////| |
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* ////////////////////// | |
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* ////////////////////// |.................. ................ |
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* _______________ |
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* <----- [hv]display -----> |
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* <------------- [hv]sync_start ------------> |
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* <--------------------- [hv]sync_end ---------------------> |
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* <-------------------------------- [hv]total ----------------------------->* |
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* |
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* This structure contains two copies of timings. First are the plain timings, |
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* which specify the logical mode, as it would be for a progressive 1:1 scanout |
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* at the refresh rate userspace can observe through vblank timestamps. Then |
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* there's the hardware timings, which are corrected for interlacing, |
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* double-clocking and similar things. They are provided as a convenience, and |
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* can be appropriately computed using drm_mode_set_crtcinfo(). |
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* |
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* For printing you can use %DRM_MODE_FMT and DRM_MODE_ARG(). |
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*/ |
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struct drm_display_mode { |
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/** |
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* @clock: |
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* |
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* Pixel clock in kHz. |
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*/ |
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int clock; /* in kHz */ |
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u16 hdisplay; |
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u16 hsync_start; |
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u16 hsync_end; |
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u16 htotal; |
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u16 hskew; |
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u16 vdisplay; |
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u16 vsync_start; |
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u16 vsync_end; |
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u16 vtotal; |
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u16 vscan; |
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/** |
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* @flags: |
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* |
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* Sync and timing flags: |
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* |
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* - DRM_MODE_FLAG_PHSYNC: horizontal sync is active high. |
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* - DRM_MODE_FLAG_NHSYNC: horizontal sync is active low. |
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* - DRM_MODE_FLAG_PVSYNC: vertical sync is active high. |
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* - DRM_MODE_FLAG_NVSYNC: vertical sync is active low. |
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* - DRM_MODE_FLAG_INTERLACE: mode is interlaced. |
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* - DRM_MODE_FLAG_DBLSCAN: mode uses doublescan. |
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* - DRM_MODE_FLAG_CSYNC: mode uses composite sync. |
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* - DRM_MODE_FLAG_PCSYNC: composite sync is active high. |
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* - DRM_MODE_FLAG_NCSYNC: composite sync is active low. |
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* - DRM_MODE_FLAG_HSKEW: hskew provided (not used?). |
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* - DRM_MODE_FLAG_BCAST: <deprecated> |
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* - DRM_MODE_FLAG_PIXMUX: <deprecated> |
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* - DRM_MODE_FLAG_DBLCLK: double-clocked mode. |
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* - DRM_MODE_FLAG_CLKDIV2: half-clocked mode. |
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* |
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* Additionally there's flags to specify how 3D modes are packed: |
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* |
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* - DRM_MODE_FLAG_3D_NONE: normal, non-3D mode. |
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* - DRM_MODE_FLAG_3D_FRAME_PACKING: 2 full frames for left and right. |
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* - DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE: interleaved like fields. |
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* - DRM_MODE_FLAG_3D_LINE_ALTERNATIVE: interleaved lines. |
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* - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL: side-by-side full frames. |
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* - DRM_MODE_FLAG_3D_L_DEPTH: ? |
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* - DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH: ? |
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* - DRM_MODE_FLAG_3D_TOP_AND_BOTTOM: frame split into top and bottom |
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* parts. |
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* - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF: frame split into left and |
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* right parts. |
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*/ |
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u32 flags; |
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/** |
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* @crtc_clock: |
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* |
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* Actual pixel or dot clock in the hardware. This differs from the |
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* logical @clock when e.g. using interlacing, double-clocking, stereo |
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* modes or other fancy stuff that changes the timings and signals |
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* actually sent over the wire. |
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* |
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* This is again in kHz. |
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* |
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* Note that with digital outputs like HDMI or DP there's usually a |
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* massive confusion between the dot clock and the signal clock at the |
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* bit encoding level. Especially when a 8b/10b encoding is used and the |
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* difference is exactly a factor of 10. |
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*/ |
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int crtc_clock; |
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u16 crtc_hdisplay; |
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u16 crtc_hblank_start; |
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u16 crtc_hblank_end; |
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u16 crtc_hsync_start; |
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u16 crtc_hsync_end; |
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u16 crtc_htotal; |
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u16 crtc_hskew; |
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u16 crtc_vdisplay; |
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u16 crtc_vblank_start; |
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u16 crtc_vblank_end; |
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u16 crtc_vsync_start; |
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u16 crtc_vsync_end; |
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u16 crtc_vtotal; |
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/** |
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* @width_mm: |
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* |
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* Addressable size of the output in mm, projectors should set this to |
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* 0. |
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*/ |
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u16 width_mm; |
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/** |
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* @height_mm: |
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* |
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* Addressable size of the output in mm, projectors should set this to |
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* 0. |
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*/ |
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u16 height_mm; |
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/** |
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* @type: |
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* |
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* A bitmask of flags, mostly about the source of a mode. Possible flags |
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* are: |
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* |
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* - DRM_MODE_TYPE_PREFERRED: Preferred mode, usually the native |
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* resolution of an LCD panel. There should only be one preferred |
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* mode per connector at any given time. |
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* - DRM_MODE_TYPE_DRIVER: Mode created by the driver, which is all of |
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* them really. Drivers must set this bit for all modes they create |
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* and expose to userspace. |
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* - DRM_MODE_TYPE_USERDEF: Mode defined or selected via the kernel |
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* command line. |
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* |
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* Plus a big list of flags which shouldn't be used at all, but are |
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* still around since these flags are also used in the userspace ABI. |
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* We no longer accept modes with these types though: |
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* |
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* - DRM_MODE_TYPE_BUILTIN: Meant for hard-coded modes, unused. |
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* Use DRM_MODE_TYPE_DRIVER instead. |
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* - DRM_MODE_TYPE_DEFAULT: Again a leftover, use |
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* DRM_MODE_TYPE_PREFERRED instead. |
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* - DRM_MODE_TYPE_CLOCK_C and DRM_MODE_TYPE_CRTC_C: Define leftovers |
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* which are stuck around for hysterical raisins only. No one has an |
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* idea what they were meant for. Don't use. |
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*/ |
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u8 type; |
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/** |
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* @expose_to_userspace: |
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* |
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* Indicates whether the mode is to be exposed to the userspace. |
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* This is to maintain a set of exposed modes while preparing |
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* user-mode's list in drm_mode_getconnector ioctl. The purpose of |
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* this only lies in the ioctl function, and is not to be used |
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* outside the function. |
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*/ |
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bool expose_to_userspace; |
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/** |
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* @head: |
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* |
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* struct list_head for mode lists. |
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*/ |
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struct list_head head; |
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/** |
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* @name: |
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* |
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* Human-readable name of the mode, filled out with drm_mode_set_name(). |
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*/ |
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char name[DRM_DISPLAY_MODE_LEN]; |
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/** |
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* @status: |
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* |
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* Status of the mode, used to filter out modes not supported by the |
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* hardware. See enum &drm_mode_status. |
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*/ |
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enum drm_mode_status status; |
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/** |
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* @picture_aspect_ratio: |
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* |
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* Field for setting the HDMI picture aspect ratio of a mode. |
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*/ |
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enum hdmi_picture_aspect picture_aspect_ratio; |
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}; |
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/** |
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* DRM_MODE_FMT - printf string for &struct drm_display_mode |
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*/ |
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#define DRM_MODE_FMT "\"%s\": %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x" |
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/** |
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* DRM_MODE_ARG - printf arguments for &struct drm_display_mode |
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* @m: display mode |
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*/ |
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#define DRM_MODE_ARG(m) \ |
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(m)->name, drm_mode_vrefresh(m), (m)->clock, \ |
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(m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \ |
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(m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \ |
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(m)->type, (m)->flags |
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#define obj_to_mode(x) container_of(x, struct drm_display_mode, base) |
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/** |
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* drm_mode_is_stereo - check for stereo mode flags |
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* @mode: drm_display_mode to check |
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* |
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* Returns: |
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* True if the mode is one of the stereo modes (like side-by-side), false if |
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* not. |
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*/ |
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static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode) |
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{ |
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return mode->flags & DRM_MODE_FLAG_3D_MASK; |
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} |
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struct drm_connector; |
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struct drm_cmdline_mode; |
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struct drm_display_mode *drm_mode_create(struct drm_device *dev); |
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void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode); |
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void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out, |
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const struct drm_display_mode *in); |
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int drm_mode_convert_umode(struct drm_device *dev, |
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struct drm_display_mode *out, |
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const struct drm_mode_modeinfo *in); |
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void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode); |
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void drm_mode_debug_printmodeline(const struct drm_display_mode *mode); |
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bool drm_mode_is_420_only(const struct drm_display_info *display, |
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const struct drm_display_mode *mode); |
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bool drm_mode_is_420_also(const struct drm_display_info *display, |
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const struct drm_display_mode *mode); |
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bool drm_mode_is_420(const struct drm_display_info *display, |
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const struct drm_display_mode *mode); |
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struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, |
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int hdisplay, int vdisplay, int vrefresh, |
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bool reduced, bool interlaced, |
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bool margins); |
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struct drm_display_mode *drm_gtf_mode(struct drm_device *dev, |
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int hdisplay, int vdisplay, int vrefresh, |
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bool interlaced, int margins); |
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struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev, |
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int hdisplay, int vdisplay, |
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int vrefresh, bool interlaced, |
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int margins, |
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int GTF_M, int GTF_2C, |
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int GTF_K, int GTF_2J); |
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void drm_display_mode_from_videomode(const struct videomode *vm, |
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struct drm_display_mode *dmode); |
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void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, |
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struct videomode *vm); |
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void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags); |
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|
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#if defined(CONFIG_OF) |
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int of_get_drm_display_mode(struct device_node *np, |
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struct drm_display_mode *dmode, u32 *bus_flags, |
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int index); |
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#else |
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static inline int of_get_drm_display_mode(struct device_node *np, |
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struct drm_display_mode *dmode, |
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u32 *bus_flags, int index) |
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{ |
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return -EINVAL; |
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} |
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#endif |
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|
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void drm_mode_set_name(struct drm_display_mode *mode); |
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int drm_mode_vrefresh(const struct drm_display_mode *mode); |
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void drm_mode_get_hv_timing(const struct drm_display_mode *mode, |
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int *hdisplay, int *vdisplay); |
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|
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void drm_mode_set_crtcinfo(struct drm_display_mode *p, |
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int adjust_flags); |
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void drm_mode_copy(struct drm_display_mode *dst, |
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const struct drm_display_mode *src); |
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struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, |
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const struct drm_display_mode *mode); |
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bool drm_mode_match(const struct drm_display_mode *mode1, |
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const struct drm_display_mode *mode2, |
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unsigned int match_flags); |
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bool drm_mode_equal(const struct drm_display_mode *mode1, |
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const struct drm_display_mode *mode2); |
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bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, |
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const struct drm_display_mode *mode2); |
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bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, |
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const struct drm_display_mode *mode2); |
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/* for use by the crtc helper probe functions */ |
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enum drm_mode_status drm_mode_validate_driver(struct drm_device *dev, |
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const struct drm_display_mode *mode); |
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enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode, |
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int maxX, int maxY); |
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enum drm_mode_status |
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drm_mode_validate_ycbcr420(const struct drm_display_mode *mode, |
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struct drm_connector *connector); |
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void drm_mode_prune_invalid(struct drm_device *dev, |
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struct list_head *mode_list, bool verbose); |
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void drm_mode_sort(struct list_head *mode_list); |
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void drm_connector_list_update(struct drm_connector *connector); |
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/* parsing cmdline modes */ |
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bool |
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drm_mode_parse_command_line_for_connector(const char *mode_option, |
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const struct drm_connector *connector, |
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struct drm_cmdline_mode *mode); |
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struct drm_display_mode * |
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drm_mode_create_from_cmdline_mode(struct drm_device *dev, |
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struct drm_cmdline_mode *cmd); |
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#endif /* __DRM_MODES_H__ */
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