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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37 * This is the interface for modesetting for drm.
39 * In order to use this interface you must include either <stdint.h> or another
40 * header defining uint32_t, int32_t and uint16_t.
42 * It aims to provide a randr1.2 compatible interface for modesettings in the
43 * kernel, the interface is also ment to be used by libraries like EGL.
45 * More information can be found in randrproto.txt which can be found here:
46 * http://gitweb.freedesktop.org/?p=xorg/proto/randrproto.git
48 * There are some major diffrences to be noted. Unlike the randr1.2 proto you
49 * need to create the memory object of the framebuffer yourself with the ttm
50 * buffer object interface. This object needs to be pinned.
53 typedef struct _drmModeRes {
67 uint32_t min_width, max_width;
68 uint32_t min_height, max_height;
69 } drmModeRes, *drmModeResPtr;
71 typedef struct drm_mode_fb_cmd drmModeFB, *drmModeFBPtr;
73 typedef struct _drmModePropertyBlob {
77 } drmModePropertyBlobRes, *drmModePropertyBlobPtr;
79 typedef struct _drmModeProperty {
82 char name[DRM_PROP_NAME_LEN];
84 uint64_t *values; // store the blob lengths
86 struct drm_mode_property_enum *enums;
88 uint32_t *blob_ids; // store the blob IDs
89 } drmModePropertyRes, *drmModePropertyPtr;
91 typedef struct _drmModeCrtc {
93 uint32_t buffer_id; /**< FB id to connect to 0 = disconnect */
95 uint32_t x, y; /**< Position on the framebuffer */
96 uint32_t width, height;
98 struct drm_mode_modeinfo mode;
100 int gamma_size; /**< Number of gamma stops */
102 } drmModeCrtc, *drmModeCrtcPtr;
104 typedef struct _drmModeEncoder {
106 uint32_t encoder_type;
108 uint32_t possible_crtcs;
109 uint32_t possible_clones;
110 } drmModeEncoder, *drmModeEncoderPtr;
113 DRM_MODE_CONNECTED = 1,
114 DRM_MODE_DISCONNECTED = 2,
115 DRM_MODE_UNKNOWNCONNECTION = 3
119 DRM_MODE_SUBPIXEL_UNKNOWN = 1,
120 DRM_MODE_SUBPIXEL_HORIZONTAL_RGB = 2,
121 DRM_MODE_SUBPIXEL_HORIZONTAL_BGR = 3,
122 DRM_MODE_SUBPIXEL_VERTICAL_RGB = 4,
123 DRM_MODE_SUBPIXEL_VERTICAL_BGR = 5,
124 DRM_MODE_SUBPIXEL_NONE = 6
127 typedef struct _drmModeConnector {
128 uint32_t connector_id;
129 uint32_t encoder_id; /**< Encoder currently connected to */
130 uint32_t connector_type;
131 uint32_t connector_type_id;
132 drmModeConnection connection;
133 uint32_t mmWidth, mmHeight; /**< HxW in millimeters */
134 drmModeSubPixel subpixel;
137 struct drm_mode_modeinfo *modes;
140 uint32_t *props; /**< List of property ids */
141 uint64_t *prop_values; /**< List of property values */
144 uint32_t *encoders; /**< List of encoder ids */
145 } drmModeConnector, *drmModeConnectorPtr;
149 extern void drmModeFreeModeInfo( struct drm_mode_modeinfo *ptr );
150 extern void drmModeFreeResources( drmModeResPtr ptr );
151 extern void drmModeFreeFB( drmModeFBPtr ptr );
152 extern void drmModeFreeCrtc( drmModeCrtcPtr ptr );
153 extern void drmModeFreeConnector( drmModeConnectorPtr ptr );
154 extern void drmModeFreeEncoder( drmModeEncoderPtr ptr );
157 * Retrives all of the resources associated with a card.
159 extern drmModeResPtr drmModeGetResources(int fd);
162 * FrameBuffer manipulation.
166 * Retrive information about framebuffer bufferId
168 extern drmModeFBPtr drmModeGetFB(int fd, uint32_t bufferId);
171 * Creates a new framebuffer with an buffer object as its scanout buffer.
173 extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
174 uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
177 * Destroies the given framebuffer.
179 extern int drmModeRmFB(int fd, uint32_t bufferId);
182 * Replace a framebuffer object with a new one - for resizing the screen.
184 extern int drmModeReplaceFB(int fd, uint32_t buffer_id,
185 uint32_t width, uint32_t height, uint8_t depth,
186 uint8_t bpp, uint32_t pitch, uint32_t bo_handle);
193 * Retrive information about the ctrt crtcId
195 extern drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId);
198 * Set the mode on a crtc crtcId with the given mode modeId.
200 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
201 uint32_t x, uint32_t y, uint32_t *connectors, int count,
202 struct drm_mode_modeinfo *mode);
209 * Set the cursor on crtc
211 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height);
214 * Move the cursor on crtc
216 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y);
221 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id);
224 * Connector manipulation
228 * Retrive information about the connector connectorId.
230 extern drmModeConnectorPtr drmModeGetConnector(int fd,
231 uint32_t connectorId);
234 * Attaches the given mode to an connector.
236 extern int drmModeAttachMode(int fd, uint32_t connectorId, struct drm_mode_modeinfo *mode_info);
239 * Detaches a mode from the connector
240 * must be unused, by the given mode.
242 extern int drmModeDetachMode(int fd, uint32_t connectorId, struct drm_mode_modeinfo *mode_info);
244 extern drmModePropertyPtr drmModeGetProperty(int fd, uint32_t propertyId);
245 extern void drmModeFreeProperty(drmModePropertyPtr ptr);
247 extern drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id);
248 extern void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr);
249 extern int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
251 extern int drmCheckModesettingSupported(const char *busid);
253 extern int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
254 uint16_t *red, uint16_t *green, uint16_t *blue);
255 extern int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
256 uint16_t *red, uint16_t *green, uint16_t *blue);