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 * generation - these are to be read by userspace, and if it notices
56 * while calling a get output or get crtc that the generation has changed
57 * it should re-call the mode resource functions resync its view of the
58 * outputs with current view.
61 typedef struct _drmModeRes {
76 uint32_t min_width, max_width;
77 uint32_t min_height, max_height;
78 } drmModeRes, *drmModeResPtr;
80 typedef struct drm_mode_fb_cmd drmModeFB, *drmModeFBPtr;
82 typedef struct _drmModePropertyBlob {
86 } drmModePropertyBlobRes, *drmModePropertyBlobPtr;
88 typedef struct _drmModeProperty {
91 char name[DRM_PROP_NAME_LEN];
93 uint64_t *values; // store the blob lengths
95 struct drm_mode_property_enum *enums;
97 uint32_t *blob_ids; // store the blob IDs
98 } drmModePropertyRes, *drmModePropertyPtr;
100 typedef struct _drmModeCrtc {
101 unsigned int crtc_id;
102 unsigned int buffer_id; /**< FB id to connect to 0 = disconnect*/
105 uint32_t x, y; /**< Position on the frameuffer */
106 uint32_t width, height;
108 struct drm_mode_modeinfo mode;
110 int count_connectors;
111 uint32_t connectors; /**< Connectors that are connected */
114 uint32_t possibles; /**< Connectors that can be connected */
116 int gamma_size; /**< Number of gamma stops */
118 } drmModeCrtc, *drmModeCrtcPtr;
120 typedef struct _drmModeEncoder {
122 unsigned int encoder_id;
123 unsigned int encoder_type;
127 } drmModeEncoder, *drmModeEncoderPtr;
130 DRM_MODE_CONNECTED = 1,
131 DRM_MODE_DISCONNECTED = 2,
132 DRM_MODE_UNKNOWNCONNECTION = 3
136 DRM_MODE_SUBPIXEL_UNKNOWN = 1,
137 DRM_MODE_SUBPIXEL_HORIZONTAL_RGB = 2,
138 DRM_MODE_SUBPIXEL_HORIZONTAL_BGR = 3,
139 DRM_MODE_SUBPIXEL_VERTICAL_RGB = 4,
140 DRM_MODE_SUBPIXEL_VERTICAL_BGR = 5,
141 DRM_MODE_SUBPIXEL_NONE = 6
144 typedef struct _drmModeConnector {
146 unsigned int connector_id;
147 unsigned int encoder; /**< Crtc currently connected to */
148 unsigned int connector_type;
149 unsigned int connector_type_id;
150 drmModeConnection connection;
151 uint32_t mmWidth, mmHeight; /**< HxW in millimeters */
152 drmModeSubPixel subpixel;
155 struct drm_mode_modeinfo *modes;
158 uint32_t *props; /**< List of property ids */
159 uint64_t *prop_values; /**< List of property values */
162 uint32_t *encoders; /**< List of encoder ids */
163 } drmModeConnector, *drmModeConnectorPtr;
167 extern void drmModeFreeModeInfo( struct drm_mode_modeinfo *ptr );
168 extern void drmModeFreeResources( drmModeResPtr ptr );
169 extern void drmModeFreeFB( drmModeFBPtr ptr );
170 extern void drmModeFreeCrtc( drmModeCrtcPtr ptr );
171 extern void drmModeFreeConnector( drmModeConnectorPtr ptr );
172 extern void drmModeFreeEncoder( drmModeEncoderPtr ptr );
175 * Retrives all of the resources associated with a card.
177 extern drmModeResPtr drmModeGetResources(int fd);
180 * Retrives the hotplug counter
182 extern uint32_t drmModeGetHotplug(int fd);
185 * FrameBuffer manipulation.
189 * Retrive information about framebuffer bufferId
191 extern drmModeFBPtr drmModeGetFB(int fd, uint32_t bufferId);
194 * Creates a new framebuffer with an buffer object as its scanout buffer.
196 extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
197 uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
200 * Destroies the given framebuffer.
202 extern int drmModeRmFB(int fd, uint32_t bufferId);
205 * Replace a framebuffer object with a new one - for resizing the screen.
207 extern int drmModeReplaceFB(int fd, uint32_t buffer_id,
208 uint32_t width, uint32_t height, uint8_t depth,
209 uint8_t bpp, uint32_t pitch, uint32_t bo_handle);
216 * Retrive information about the ctrt crtcId
218 extern drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId);
221 * Set the mode on a crtc crtcId with the given mode modeId.
223 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
224 uint32_t x, uint32_t y, uint32_t *connectors, int count,
225 struct drm_mode_modeinfo *mode);
232 * Set the cursor on crtc
234 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height);
237 * Move the cursor on crtc
239 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y);
244 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id);
247 * Connector manipulation
251 * Retrive information about the connector connectorId.
253 extern drmModeConnectorPtr drmModeGetConnector(int fd,
254 uint32_t connectorId);
257 * Attaches the given mode to an connector.
259 extern int drmModeAttachMode(int fd, uint32_t connectorId, struct drm_mode_modeinfo *mode_info);
262 * Detaches a mode from the connector
263 * must be unused, by the given mode.
265 extern int drmModeDetachMode(int fd, uint32_t connectorId, struct drm_mode_modeinfo *mode_info);
267 extern drmModePropertyPtr drmModeGetProperty(int fd, uint32_t propertyId);
268 extern void drmModeFreeProperty(drmModePropertyPtr ptr);
270 extern drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id);
271 extern void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr);
272 extern int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
274 extern int drmCheckModesettingSupported(const char *busid);
276 extern int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
277 uint16_t *red, uint16_t *green, uint16_t *blue);
278 extern int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
279 uint16_t *red, uint16_t *green, uint16_t *blue);