summaryrefslogtreecommitdiffstats
path: root/include/drm/drm_modes.h
blob: 08a8cac9e5554ea20b3184bee3a8bb31088e757c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/*
 * Copyright © 2006 Keith Packard
 * Copyright © 2007-2008 Dave Airlie
 * Copyright © 2007-2008 Intel Corporation
 *   Jesse Barnes <jesse.barnes@intel.com>
 * Copyright © 2014 Intel Corporation
 *   Daniel Vetter <daniel.vetter@ffwll.ch>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef __DRM_MODES_H__
#define __DRM_MODES_H__

/*
 * Note on terminology:  here, for brevity and convenience, we refer to connector
 * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
 * DVI, etc.  And 'screen' refers to the whole of the visible display, which
 * may span multiple monitors (and therefore multiple CRTC and connector
 * structures).
 */

enum drm_mode_status {
    MODE_OK	= 0,	/* Mode OK */
    MODE_HSYNC,		/* hsync out of range */
    MODE_VSYNC,		/* vsync out of range */
    MODE_H_ILLEGAL,	/* mode has illegal horizontal timings */
    MODE_V_ILLEGAL,	/* mode has illegal horizontal timings */
    MODE_BAD_WIDTH,	/* requires an unsupported linepitch */
    MODE_NOMODE,	/* no mode with a matching name */
    MODE_NO_INTERLACE,	/* interlaced mode not supported */
    MODE_NO_DBLESCAN,	/* doublescan mode not supported */
    MODE_NO_VSCAN,	/* multiscan mode not supported */
    MODE_MEM,		/* insufficient video memory */
    MODE_VIRTUAL_X,	/* mode width too large for specified virtual size */
    MODE_VIRTUAL_Y,	/* mode height too large for specified virtual size */
    MODE_MEM_VIRT,	/* insufficient video memory given virtual size */
    MODE_NOCLOCK,	/* no fixed clock available */
    MODE_CLOCK_HIGH,	/* clock required is too high */
    MODE_CLOCK_LOW,	/* clock required is too low */
    MODE_CLOCK_RANGE,	/* clock/mode isn't in a ClockRange */
    MODE_BAD_HVALUE,	/* horizontal timing was out of range */
    MODE_BAD_VVALUE,	/* vertical timing was out of range */
    MODE_BAD_VSCAN,	/* VScan value out of range */
    MODE_HSYNC_NARROW,	/* horizontal sync too narrow */
    MODE_HSYNC_WIDE,	/* horizontal sync too wide */
    MODE_HBLANK_NARROW,	/* horizontal blanking too narrow */
    MODE_HBLANK_WIDE,	/* horizontal blanking too wide */
    MODE_VSYNC_NARROW,	/* vertical sync too narrow */
    MODE_VSYNC_WIDE,	/* vertical sync too wide */
    MODE_VBLANK_NARROW,	/* vertical blanking too narrow */
    MODE_VBLANK_WIDE,	/* vertical blanking too wide */
    MODE_PANEL,         /* exceeds panel dimensions */
    MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
    MODE_ONE_WIDTH,     /* only one width is supported */
    MODE_ONE_HEIGHT,    /* only one height is supported */
    MODE_ONE_SIZE,      /* only one resolution is supported */
    MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */
    MODE_NO_STEREO,	/* stereo modes not supported */
    MODE_UNVERIFIED = -3, /* mode needs to reverified */
    MODE_BAD = -2,	/* unspecified reason */
    MODE_ERROR	= -1	/* error condition */
};

#define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
				    DRM_MODE_TYPE_CRTC_C)

#define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
	.name = nm, .status = 0, .type = (t), .clock = (c), \
	.hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
	.htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
	.vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
	.vscan = (vs), .flags = (f), \
	.base.type = DRM_MODE_OBJECT_MODE

#define CRTC_INTERLACE_HALVE_V	(1 << 0) /* halve V values for interlacing */
#define CRTC_STEREO_DOUBLE	(1 << 1) /* adjust timings for stereo modes */
#define CRTC_NO_DBLSCAN		(1 << 2) /* don't adjust doublescan */
#define CRTC_NO_VSCAN		(1 << 3) /* don't adjust doublescan */
#define CRTC_STEREO_DOUBLE_ONLY	(CRTC_STEREO_DOUBLE | CRTC_NO_DBLSCAN | CRTC_NO_VSCAN)

#define DRM_MODE_FLAG_3D_MAX	DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF

struct drm_display_mode {
	/* Header */
	struct list_head head;
	struct drm_mode_object base;

	char name[DRM_DISPLAY_MODE_LEN];

	enum drm_mode_status status;
	unsigned int type;

	/* Proposed mode values */
	int clock;		/* in kHz */
	int hdisplay;
	int hsync_start;
	int hsync_end;
	int htotal;
	int hskew;
	int vdisplay;
	int vsync_start;
	int vsync_end;
	int vtotal;
	int vscan;
	unsigned int flags;

	/* Addressable image size (may be 0 for projectors, etc.) */
	int width_mm;
	int height_mm;

	/* Actual mode we give to hw */
	int crtc_clock;		/* in KHz */
	int crtc_hdisplay;
	int crtc_hblank_start;
	int crtc_hblank_end;
	int crtc_hsync_start;
	int crtc_hsync_end;
	int crtc_htotal;
	int crtc_hskew;
	int crtc_vdisplay;
	int crtc_vblank_start;
	int crtc_vblank_end;
	int crtc_vsync_start;
	int crtc_vsync_end;
	int crtc_vtotal;

	/* Driver private mode info */
	int *private;
	int private_flags;

	int vrefresh;		/* in Hz */
	int hsync;		/* in kHz */
	enum hdmi_picture_aspect picture_aspect_ratio;
};

/* mode specified on the command line */
struct drm_cmdline_mode {
	bool specified;
	bool refresh_specified;
	bool bpp_specified;
	int xres, yres;
	int bpp;
	int refresh;
	bool rb;
	bool interlace;
	bool cvt;
	bool margins;
	enum drm_connector_force force;
};

/**
 * drm_mode_is_stereo - check for stereo mode flags
 * @mode: drm_display_mode to check
 *
 * Returns:
 * True if the mode is one of the stereo modes (like side-by-side), false if
 * not.
 */
static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode)
{
	return mode->flags & DRM_MODE_FLAG_3D_MASK;
}

struct drm_connector;
struct drm_cmdline_mode;

struct drm_display_mode *drm_mode_create(struct drm_device *dev);
void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out,
                               const struct drm_display_mode *in);
int drm_mode_convert_umode(struct drm_display_mode *out,
			   const struct drm_mode_modeinfo *in);
void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);

struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
				      int hdisplay, int vdisplay, int vrefresh,
				      bool reduced, bool interlaced,
				      bool margins);
struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
				      int hdisplay, int vdisplay, int vrefresh,
				      bool interlaced, int margins);
struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
					      int hdisplay, int vdisplay,
					      int vrefresh, bool interlaced,
					      int margins,
					      int GTF_M, int GTF_2C,
					      int GTF_K, int GTF_2J);
void drm_display_mode_from_videomode(const struct videomode *vm,
				     struct drm_display_mode *dmode);
void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,
				   struct videomode *vm);
int of_get_drm_display_mode(struct device_node *np,
			    struct drm_display_mode *dmode,
			    int index);

void drm_mode_set_name(struct drm_display_mode *mode);
int drm_mode_hsync(const struct drm_display_mode *mode);
int drm_mode_vrefresh(const struct drm_display_mode *mode);

void drm_mode_set_crtcinfo(struct drm_display_mode *p,
			   int adjust_flags);
void drm_mode_copy(struct drm_display_mode *dst,
		   const struct drm_display_mode *src);
struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
					    const struct drm_display_mode *mode);
bool drm_mode_equal(const struct drm_display_mode *mode1,
		    const struct drm_display_mode *mode2);
bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,
					const struct drm_display_mode *mode2);

/* for use by the crtc helper probe functions */
enum drm_mode_status drm_mode_validate_basic(const struct drm_display_mode *mode);
enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,
					    int maxX, int maxY);
void drm_mode_prune_invalid(struct drm_device *dev,
			    struct list_head *mode_list, bool verbose);
void drm_mode_sort(struct list_head *mode_list);
void drm_mode_connector_list_update(struct drm_connector *connector, bool merge_type_bits);

/* parsing cmdline modes */
bool
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);

#endif /* __DRM_MODES_H__ */
OpenPOWER on IntegriCloud