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) <year> <copyright holders>
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38 * This is the interface for modesetting for drm.
40 * In order to use this interface you must include either <stdint.h> or another
41 * header defining uint32_t, int32_t and uint16_t.
43 * It aims to provide a randr1.2 compatible interface for modesettings in the
44 * kernel, the interface is also ment to be used by libraries like EGL.
46 * More information can be found in randrproto.txt which can be found here:
47 * http://gitweb.freedesktop.org/?p=xorg/proto/randrproto.git
49 * There are some major diffrences to be noted. Unlike the randr1.2 proto you
50 * need to create the memory object of the framebuffer yourself with the ttm
51 * buffer object interface. This object needs to be pinned.
55 typedef struct _drmModeRes {
69 uint32_t min_width, max_width;
70 uint32_t min_height, max_height;
71 } drmModeRes, *drmModeResPtr;
73 typedef struct drm_mode_fb_cmd drmModeFB, *drmModeFBPtr;
75 typedef struct _drmModePropertyBlob {
79 } drmModePropertyBlobRes, *drmModePropertyBlobPtr;
81 typedef struct _drmModeProperty {
84 char name[DRM_PROP_NAME_LEN];
86 uint64_t *values; // store the blob lengths
88 struct drm_mode_property_enum *enums;
90 uint32_t *blob_ids; // store the blob IDs
91 } drmModePropertyRes, *drmModePropertyPtr;
93 typedef struct _drmModeCrtc {
95 unsigned int buffer_id; /**< FB id to connect to 0 = disconnect*/
97 uint32_t x, y; /**< Position on the frameuffer */
98 uint32_t width, height;
100 struct drm_mode_modeinfo mode;
102 int count_connectors;
103 uint32_t connectors; /**< Connectors that are connected */
106 uint32_t possibles; /**< Connectors that can be connected */
108 int gamma_size; /**< Number of gamma stops */
110 } drmModeCrtc, *drmModeCrtcPtr;
112 typedef struct _drmModeEncoder {
113 unsigned int encoder_id;
114 unsigned int encoder_type;
117 } drmModeEncoder, *drmModeEncoderPtr;
120 DRM_MODE_CONNECTED = 1,
121 DRM_MODE_DISCONNECTED = 2,
122 DRM_MODE_UNKNOWNCONNECTION = 3
126 DRM_MODE_SUBPIXEL_UNKNOWN = 1,
127 DRM_MODE_SUBPIXEL_HORIZONTAL_RGB = 2,
128 DRM_MODE_SUBPIXEL_HORIZONTAL_BGR = 3,
129 DRM_MODE_SUBPIXEL_VERTICAL_RGB = 4,
130 DRM_MODE_SUBPIXEL_VERTICAL_BGR = 5,
131 DRM_MODE_SUBPIXEL_NONE = 6
134 typedef struct _drmModeConnector {
135 unsigned int connector_id;
137 unsigned int crtc; /**< Crtc currently connected to */
138 unsigned int connector_type;
139 unsigned int connector_type_id;
140 drmModeConnection connection;
141 uint32_t mmWidth, mmHeight; /**< HxW in millimeters */
142 drmModeSubPixel subpixel;
145 uint32_t crtcs; /**< Possible crtc to connect to */
148 uint32_t clones; /**< Mask of clones */
151 struct drm_mode_modeinfo *modes;
154 uint32_t *props; /**< List of property ids */
155 uint64_t *prop_values; /**< List of property values */
158 uint32_t *encoders; /**< List of encoder ids */
159 } drmModeConnector, *drmModeConnectorPtr;
163 extern void drmModeFreeModeInfo( struct drm_mode_modeinfo *ptr );
164 extern void drmModeFreeResources( drmModeResPtr ptr );
165 extern void drmModeFreeFB( drmModeFBPtr ptr );
166 extern void drmModeFreeCrtc( drmModeCrtcPtr ptr );
167 extern void drmModeFreeConnector( drmModeConnectorPtr ptr );
168 extern void drmModeFreeEncoder( drmModeEncoderPtr ptr );
171 * Retrives all of the resources associated with a card.
173 extern drmModeResPtr drmModeGetResources(int fd);
176 * Retrives the hotplug counter
178 extern uint32_t drmModeGetHotplug(int fd);
181 * FrameBuffer manipulation.
185 * Retrive information about framebuffer bufferId
187 extern drmModeFBPtr drmModeGetFB(int fd, uint32_t bufferId);
190 * Creates a new framebuffer with an buffer object as its scanout buffer.
192 extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
193 uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
196 * Destroies the given framebuffer.
198 extern int drmModeRmFB(int fd, uint32_t bufferId);
201 * Replace a framebuffer object with a new one - for resizing the screen.
203 extern int drmModeReplaceFB(int fd, uint32_t buffer_id,
204 uint32_t width, uint32_t height, uint8_t depth,
205 uint8_t bpp, uint32_t pitch, uint32_t bo_handle);
212 * Retrive information about the ctrt crtcId
214 extern drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId);
217 * Set the mode on a crtc crtcId with the given mode modeId.
219 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
220 uint32_t x, uint32_t y, uint32_t *connectors, int count,
221 struct drm_mode_modeinfo *mode);
228 * Set the cursor on crtc
230 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height);
233 * Move the cursor on crtc
235 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y);
240 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id);
243 * Connector manipulation
247 * Retrive information about the connector connectorId.
249 extern drmModeConnectorPtr drmModeGetConnector(int fd,
250 uint32_t connectorId);
253 * Attaches the given mode to an connector.
255 extern int drmModeAttachMode(int fd, uint32_t connectorId, struct drm_mode_modeinfo *mode_info);
258 * Detaches a mode from the connector
259 * must be unused, by the given mode.
261 extern int drmModeDetachMode(int fd, uint32_t connectorId, struct drm_mode_modeinfo *mode_info);
263 extern drmModePropertyPtr drmModeGetProperty(int fd, uint32_t propertyId);
264 extern void drmModeFreeProperty(drmModePropertyPtr ptr);
266 extern drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id);
267 extern void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr);
268 extern int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
270 extern int drmCheckModesettingSupported(const char *busid);