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+/*
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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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+
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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 {
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+ MODE_OK = 0, /* 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_UNVERIFIED = -3, /* mode needs to reverified */
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+ MODE_BAD = -2, /* unspecified reason */
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+ MODE_ERROR = -1 /* error condition */
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+};
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+
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+#define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
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+ DRM_MODE_TYPE_CRTC_C)
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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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+
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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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+
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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 {
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+ /* Header */
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+ struct list_head head;
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+ struct drm_mode_object base;
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+
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+ char name[DRM_DISPLAY_MODE_LEN];
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+
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+ enum drm_mode_status status;
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+ unsigned int type;
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+
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+ /* Proposed mode values */
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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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+ unsigned int flags;
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+
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+ /* Addressable image size (may be 0 for projectors, etc.) */
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+ int width_mm;
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+ int height_mm;
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+
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+ /* Actual mode we give to hw */
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+ int crtc_clock; /* in KHz */
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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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+ /* Driver private mode info */
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+ int private_size;
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+ int *private;
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+ int private_flags;
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+
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+ int vrefresh; /* in Hz */
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+ int hsync; /* in kHz */
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+ enum hdmi_picture_aspect picture_aspect_ratio;
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+};
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+
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+/* mode specified on the command line */
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+struct drm_cmdline_mode {
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+ bool specified;
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+ bool refresh_specified;
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+ bool bpp_specified;
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+ int xres, yres;
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+ int bpp;
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+ int refresh;
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+ bool rb;
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+ bool interlace;
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+ bool cvt;
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+ bool margins;
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+ enum drm_connector_force force;
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+};
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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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+
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+struct drm_connector;
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+struct drm_cmdline_mode;
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+
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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_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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+
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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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+int drm_display_mode_from_videomode(const struct videomode *vm,
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+ struct drm_display_mode *dmode);
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+int of_get_drm_display_mode(struct device_node *np,
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+ struct drm_display_mode *dmode,
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+ int index);
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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_width(const struct drm_display_mode *mode);
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+int drm_mode_height(const 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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+
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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_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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+void drm_mode_validate_size(struct drm_device *dev,
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+ struct list_head *mode_list,
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+ int maxX, int maxY, int maxPitch);
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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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+
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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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+ 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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+
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+#endif /* __DRM_MODES_H__ */
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Daniel Vetter