523 строки
18 KiB
C
523 строки
18 KiB
C
/*
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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 <jesse.barnes@intel.com>
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* Copyright © 2014 Intel Corporation
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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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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* 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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* 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 horizontal 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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.base.type = DRM_MODE_OBJECT_MODE
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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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/**
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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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* 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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* @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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* @base:
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*
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* A display mode is a normal modeset object, possibly including public
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* userspace id.
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*
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* FIXME:
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*
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* This can probably be removed since the entire concept of userspace
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* managing modes explicitly has never landed in upstream kernel mode
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* setting support.
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*/
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struct drm_mode_object base;
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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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* @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 via kernel 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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unsigned int type;
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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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int hdisplay;
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int hsync_start;
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int hsync_end;
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int htotal;
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int hskew;
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int vdisplay;
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int vsync_start;
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int vsync_end;
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int vtotal;
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int 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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unsigned int flags;
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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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int 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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int height_mm;
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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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int crtc_hdisplay;
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int crtc_hblank_start;
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int crtc_hblank_end;
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int crtc_hsync_start;
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int crtc_hsync_end;
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int crtc_htotal;
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int crtc_hskew;
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int crtc_vdisplay;
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int crtc_vblank_start;
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int crtc_vblank_end;
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int crtc_vsync_start;
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int crtc_vsync_end;
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int crtc_vtotal;
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/**
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* @private:
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*
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* Pointer for driver private data. This can only be used for mode
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* objects passed to drivers in modeset operations. It shouldn't be used
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* by atomic drivers since they can store any additional data by
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* subclassing state structures.
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*/
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int *private;
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/**
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* @private_flags:
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*
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* Similar to @private, but just an integer.
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*/
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int private_flags;
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/**
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* @vrefresh:
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*
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* Vertical refresh rate, for debug output in human readable form. Not
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* used in a functional way.
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*
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* This value is in Hz.
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*/
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int vrefresh;
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/**
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* @hsync:
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*
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* Horizontal refresh rate, for debug output in human readable form. Not
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* used in a functional way.
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*
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* This value is in kHz.
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*/
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int hsync;
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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 "%d:\"%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)->base.id, (m)->name, (m)->vrefresh, (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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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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void drm_mode_set_name(struct drm_display_mode *mode);
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int drm_mode_hsync(const 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_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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|
|
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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,
|
|
const struct drm_display_mode *mode);
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enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,
|
|
int maxX, int maxY);
|
|
enum drm_mode_status
|
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drm_mode_validate_ycbcr420(const struct drm_display_mode *mode,
|
|
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_mode_connector_list_update(struct drm_connector *connector);
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|
|
|
/* parsing cmdline modes */
|
|
bool
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|
drm_mode_parse_command_line_for_connector(const char *mode_option,
|
|
struct drm_connector *connector,
|
|
struct drm_cmdline_mode *mode);
|
|
struct drm_display_mode *
|
|
drm_mode_create_from_cmdline_mode(struct drm_device *dev,
|
|
struct drm_cmdline_mode *cmd);
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|
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#endif /* __DRM_MODES_H__ */
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