3 * Header for DRM modesetting interface.
5 * \author Jakob Bornecrantz <wallbraker@gmail.com>
7 * \par Acknowledgements:
8 * Feb 2007, Dave Airlie <airlied@linux.ie>
12 * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
13 * Copyright (c) 2007-2008 Dave Airlie <airlied@linux.ie>
14 * Copyright (c) 2007-2008 Jakob Bornecrantz <wallbraker@gmail.com>
16 * Permission is hereby granted, free of charge, to any person obtaining a
17 * copy of this software and associated documentation files (the "Software"),
18 * to deal in the Software without restriction, including without limitation
19 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
20 * and/or sell copies of the Software, and to permit persons to whom the
21 * Software is furnished to do so, subject to the following conditions:
23 * The above copyright notice and this permission notice shall be included in
24 * all copies or substantial portions of the Software.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
29 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
30 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
31 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
39 * This is the interface for modesetting for drm.
41 * In order to use this interface you must include either <stdint.h> or another
42 * header defining uint32_t, int32_t and uint16_t.
44 * It aims to provide a randr1.2 compatible interface for modesettings in the
45 * kernel, the interface is also ment to be used by libraries like EGL.
47 * More information can be found in randrproto.txt which can be found here:
48 * http://gitweb.freedesktop.org/?p=xorg/proto/randrproto.git
50 * There are some major diffrences to be noted. Unlike the randr1.2 proto you
51 * need to create the memory object of the framebuffer yourself with the ttm
52 * buffer object interface. This object needs to be pinned.
56 * If we pickup an old version of drm.h which doesn't include drm_mode.h
57 * we should redefine defines. This is so that builds doesn't breaks with
58 * new libdrm on old kernels.
62 #define DRM_DISPLAY_INFO_LEN 32
63 #define DRM_CONNECTOR_NAME_LEN 32
64 #define DRM_DISPLAY_MODE_LEN 32
65 #define DRM_PROP_NAME_LEN 32
67 #define DRM_MODE_TYPE_BUILTIN (1<<0)
68 #define DRM_MODE_TYPE_CLOCK_C ((1<<1) | DRM_MODE_TYPE_BUILTIN)
69 #define DRM_MODE_TYPE_CRTC_C ((1<<2) | DRM_MODE_TYPE_BUILTIN)
70 #define DRM_MODE_TYPE_PREFERRED (1<<3)
71 #define DRM_MODE_TYPE_DEFAULT (1<<4)
72 #define DRM_MODE_TYPE_USERDEF (1<<5)
73 #define DRM_MODE_TYPE_DRIVER (1<<6)
75 /* Video mode flags */
76 /* bit compatible with the xorg definitions. */
77 #define DRM_MODE_FLAG_PHSYNC (1<<0)
78 #define DRM_MODE_FLAG_NHSYNC (1<<1)
79 #define DRM_MODE_FLAG_PVSYNC (1<<2)
80 #define DRM_MODE_FLAG_NVSYNC (1<<3)
81 #define DRM_MODE_FLAG_INTERLACE (1<<4)
82 #define DRM_MODE_FLAG_DBLSCAN (1<<5)
83 #define DRM_MODE_FLAG_CSYNC (1<<6)
84 #define DRM_MODE_FLAG_PCSYNC (1<<7)
85 #define DRM_MODE_FLAG_NCSYNC (1<<8)
86 #define DRM_MODE_FLAG_HSKEW (1<<9) /* hskew provided */
87 #define DRM_MODE_FLAG_BCAST (1<<10)
88 #define DRM_MODE_FLAG_PIXMUX (1<<11)
89 #define DRM_MODE_FLAG_DBLCLK (1<<12)
90 #define DRM_MODE_FLAG_CLKDIV2 (1<<13)
93 /* bit compatible with the xorg definitions. */
94 #define DRM_MODE_DPMS_ON 0
95 #define DRM_MODE_DPMS_STANDBY 1
96 #define DRM_MODE_DPMS_SUSPEND 2
97 #define DRM_MODE_DPMS_OFF 3
99 /* Scaling mode options */
100 #define DRM_MODE_SCALE_NON_GPU 0
101 #define DRM_MODE_SCALE_FULLSCREEN 1
102 #define DRM_MODE_SCALE_NO_SCALE 2
103 #define DRM_MODE_SCALE_ASPECT 3
105 /* Dithering mode options */
106 #define DRM_MODE_DITHERING_OFF 0
107 #define DRM_MODE_DITHERING_ON 1
109 #define DRM_MODE_ENCODER_NONE 0
110 #define DRM_MODE_ENCODER_DAC 1
111 #define DRM_MODE_ENCODER_TMDS 2
112 #define DRM_MODE_ENCODER_LVDS 3
113 #define DRM_MODE_ENCODER_TVDAC 4
115 #define DRM_MODE_SUBCONNECTOR_Automatic 0
116 #define DRM_MODE_SUBCONNECTOR_Unknown 0
117 #define DRM_MODE_SUBCONNECTOR_DVID 3
118 #define DRM_MODE_SUBCONNECTOR_DVIA 4
119 #define DRM_MODE_SUBCONNECTOR_Composite 5
120 #define DRM_MODE_SUBCONNECTOR_SVIDEO 6
121 #define DRM_MODE_SUBCONNECTOR_Component 8
123 #define DRM_MODE_CONNECTOR_Unknown 0
124 #define DRM_MODE_CONNECTOR_VGA 1
125 #define DRM_MODE_CONNECTOR_DVII 2
126 #define DRM_MODE_CONNECTOR_DVID 3
127 #define DRM_MODE_CONNECTOR_DVIA 4
128 #define DRM_MODE_CONNECTOR_Composite 5
129 #define DRM_MODE_CONNECTOR_SVIDEO 6
130 #define DRM_MODE_CONNECTOR_LVDS 7
131 #define DRM_MODE_CONNECTOR_Component 8
132 #define DRM_MODE_CONNECTOR_9PinDIN 9
133 #define DRM_MODE_CONNECTOR_DisplayPort 10
134 #define DRM_MODE_CONNECTOR_HDMIA 11
135 #define DRM_MODE_CONNECTOR_HDMIB 12
137 #define DRM_MODE_PROP_PENDING (1<<0)
138 #define DRM_MODE_PROP_RANGE (1<<1)
139 #define DRM_MODE_PROP_IMMUTABLE (1<<2)
140 #define DRM_MODE_PROP_ENUM (1<<3) /* enumerated type with text strings */
141 #define DRM_MODE_PROP_BLOB (1<<4)
143 #define DRM_MODE_CURSOR_BO (1<<0)
144 #define DRM_MODE_CURSOR_MOVE (1<<1)
146 #endif /* _DRM_MODE_H */
152 * Just because these are defined doesn't mean that the kernel
153 * can do that feature, its just for new code vs old libdrm.
155 #define DRM_MODE_FEATURE_KMS 1
156 #define DRM_MODE_FEATURE_DIRTYFB 1
159 typedef struct _drmModeRes {
167 int count_connectors;
168 uint32_t *connectors;
173 uint32_t min_width, max_width;
174 uint32_t min_height, max_height;
175 } drmModeRes, *drmModeResPtr;
177 typedef struct _drmModeModeInfo {
179 uint16_t hdisplay, hsync_start, hsync_end, htotal, hskew;
180 uint16_t vdisplay, vsync_start, vsync_end, vtotal, vscan;
182 uint32_t vrefresh; /* vertical refresh * 1000 */
186 char name[DRM_DISPLAY_MODE_LEN];
187 } drmModeModeInfo, *drmModeModeInfoPtr;
189 typedef struct _drmModeFB {
191 uint32_t width, height;
195 /* driver specific handle */
197 } drmModeFB, *drmModeFBPtr;
199 typedef struct drm_clip_rect drmModeClip, *drmModeClipPtr;
201 typedef struct _drmModePropertyBlob {
205 } drmModePropertyBlobRes, *drmModePropertyBlobPtr;
207 typedef struct _drmModeProperty {
210 char name[DRM_PROP_NAME_LEN];
212 uint64_t *values; // store the blob lengths
214 struct drm_mode_property_enum *enums;
216 uint32_t *blob_ids; // store the blob IDs
217 } drmModePropertyRes, *drmModePropertyPtr;
219 typedef struct _drmModeCrtc {
221 uint32_t buffer_id; /**< FB id to connect to 0 = disconnect */
223 uint32_t x, y; /**< Position on the framebuffer */
224 uint32_t width, height;
226 drmModeModeInfo mode;
228 int gamma_size; /**< Number of gamma stops */
230 } drmModeCrtc, *drmModeCrtcPtr;
232 typedef struct _drmModeEncoder {
234 uint32_t encoder_type;
236 uint32_t possible_crtcs;
237 uint32_t possible_clones;
238 } drmModeEncoder, *drmModeEncoderPtr;
241 DRM_MODE_CONNECTED = 1,
242 DRM_MODE_DISCONNECTED = 2,
243 DRM_MODE_UNKNOWNCONNECTION = 3
247 DRM_MODE_SUBPIXEL_UNKNOWN = 1,
248 DRM_MODE_SUBPIXEL_HORIZONTAL_RGB = 2,
249 DRM_MODE_SUBPIXEL_HORIZONTAL_BGR = 3,
250 DRM_MODE_SUBPIXEL_VERTICAL_RGB = 4,
251 DRM_MODE_SUBPIXEL_VERTICAL_BGR = 5,
252 DRM_MODE_SUBPIXEL_NONE = 6
255 typedef struct _drmModeConnector {
256 uint32_t connector_id;
257 uint32_t encoder_id; /**< Encoder currently connected to */
258 uint32_t connector_type;
259 uint32_t connector_type_id;
260 drmModeConnection connection;
261 uint32_t mmWidth, mmHeight; /**< HxW in millimeters */
262 drmModeSubPixel subpixel;
265 drmModeModeInfoPtr modes;
268 uint32_t *props; /**< List of property ids */
269 uint64_t *prop_values; /**< List of property values */
272 uint32_t *encoders; /**< List of encoder ids */
273 } drmModeConnector, *drmModeConnectorPtr;
277 extern void drmModeFreeModeInfo( drmModeModeInfoPtr ptr );
278 extern void drmModeFreeResources( drmModeResPtr ptr );
279 extern void drmModeFreeFB( drmModeFBPtr ptr );
280 extern void drmModeFreeCrtc( drmModeCrtcPtr ptr );
281 extern void drmModeFreeConnector( drmModeConnectorPtr ptr );
282 extern void drmModeFreeEncoder( drmModeEncoderPtr ptr );
285 * Retrives all of the resources associated with a card.
287 extern drmModeResPtr drmModeGetResources(int fd);
290 * FrameBuffer manipulation.
294 * Retrive information about framebuffer bufferId
296 extern drmModeFBPtr drmModeGetFB(int fd, uint32_t bufferId);
299 * Creates a new framebuffer with an buffer object as its scanout buffer.
301 extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
302 uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
305 * Destroies the given framebuffer.
307 extern int drmModeRmFB(int fd, uint32_t bufferId);
310 * Mark a region of a framebuffer as dirty.
312 extern int drmModeDirtyFB(int fd, uint32_t bufferId,
313 drmModeClipPtr clips, uint32_t num_clips);
321 * Retrive information about the ctrt crtcId
323 extern drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId);
326 * Set the mode on a crtc crtcId with the given mode modeId.
328 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
329 uint32_t x, uint32_t y, uint32_t *connectors, int count,
330 drmModeModeInfoPtr mode);
337 * Set the cursor on crtc
339 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height);
342 * Move the cursor on crtc
344 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y);
349 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id);
352 * Connector manipulation
356 * Retrive information about the connector connectorId.
358 extern drmModeConnectorPtr drmModeGetConnector(int fd,
359 uint32_t connectorId);
362 * Attaches the given mode to an connector.
364 extern int drmModeAttachMode(int fd, uint32_t connectorId, drmModeModeInfoPtr mode_info);
367 * Detaches a mode from the connector
368 * must be unused, by the given mode.
370 extern int drmModeDetachMode(int fd, uint32_t connectorId, drmModeModeInfoPtr mode_info);
372 extern drmModePropertyPtr drmModeGetProperty(int fd, uint32_t propertyId);
373 extern void drmModeFreeProperty(drmModePropertyPtr ptr);
375 extern drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id);
376 extern void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr);
377 extern int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
379 extern int drmCheckModesettingSupported(const char *busid);
381 extern int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
382 uint16_t *red, uint16_t *green, uint16_t *blue);
383 extern int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
384 uint16_t *red, uint16_t *green, uint16_t *blue);
385 extern int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
386 uint32_t flags, void *user_data);