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 {
66 } drmModeRes, *drmModeResPtr;
68 typedef struct drm_mode_fb_cmd drmModeFB, *drmModeFBPtr;
70 typedef struct _drmModeProperty {
73 unsigned char name[DRM_PROP_NAME_LEN];
77 struct drm_mode_property_enum *enums;
79 } drmModePropertyRes, *drmModePropertyPtr;
81 typedef struct _drmModeCrtc {
83 unsigned int buffer_id; /**< FB id to connect to 0 = disconnect*/
85 uint32_t x, y; /**< Position on the frameuffer */
86 uint32_t width, height;
88 struct drm_mode_modeinfo mode;
91 uint32_t outputs; /**< Outputs that are connected */
94 uint32_t possibles; /**< Outputs that can be connected */
96 int gamma_size; /**< Number of gamma stops */
98 } drmModeCrtc, *drmModeCrtcPtr;
101 DRM_MODE_CONNECTED = 1,
102 DRM_MODE_DISCONNECTED = 2,
103 DRM_MODE_UNKNOWNCONNECTION = 3
107 DRM_MODE_SUBPIXEL_UNKNOWN = 1,
108 DRM_MODE_SUBPIXEL_HORIZONTAL_RGB = 2,
109 DRM_MODE_SUBPIXEL_HORIZONTAL_BGR = 3,
110 DRM_MODE_SUBPIXEL_VERTICAL_RGB = 4,
111 DRM_MODE_SUBPIXEL_VERTICAL_BGR = 5,
112 DRM_MODE_SUBPIXEL_NONE = 6
115 typedef struct _drmModeOutput {
116 unsigned int output_id;
118 unsigned int crtc; /**< Crtc currently connected to */
119 unsigned char name[DRM_OUTPUT_NAME_LEN];
120 drmModeConnection connection;
121 uint32_t mmWidth, mmHeight; /**< HxW in millimeters */
122 drmModeSubPixel subpixel;
125 uint32_t crtcs; /**< Possible crtc to connect to */
128 uint32_t clones; /**< Mask of clones */
131 struct drm_mode_modeinfo *modes;
134 uint32_t *props; /**< List of property ids */
135 uint32_t *prop_values; /**< List of property values */
137 } drmModeOutput, *drmModeOutputPtr;
141 extern void drmModeFreeModeInfo( struct drm_mode_modeinfo *ptr );
142 extern void drmModeFreeResources( drmModeResPtr ptr );
143 extern void drmModeFreeFB( drmModeFBPtr ptr );
144 extern void drmModeFreeCrtc( drmModeCrtcPtr ptr );
145 extern void drmModeFreeOutput( drmModeOutputPtr ptr );
148 * Retrives all of the resources associated with a card.
150 extern drmModeResPtr drmModeGetResources(int fd);
154 * FrameBuffer manipulation.
158 * Retrive information about framebuffer bufferId
160 extern drmModeFBPtr drmModeGetFB(int fd, uint32_t bufferId);
163 * Creates a new framebuffer with an buffer object as its scanout buffer.
165 extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
166 uint8_t bpp, uint32_t pitch, drmBO *bo,
169 * Destroies the given framebuffer.
171 extern int drmModeRmFB(int fd, uint32_t bufferId);
179 * Retrive information about the ctrt crtcId
181 extern drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId);
184 * Set the mode on a crtc crtcId with the given mode modeId.
186 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
187 uint32_t x, uint32_t y, uint32_t *outputs, int count,
188 struct drm_mode_modeinfo *mode);
192 * Output manipulation
196 * Retrive information about the output outputId.
198 extern drmModeOutputPtr drmModeGetOutput(int fd,
202 * Adds a new mode from the given mode info.
203 * Name must be unique.
205 extern uint32_t drmModeAddMode(int fd, struct drm_mode_modeinfo *modeInfo);
208 * Removes a mode created with AddMode, must be unused.
210 extern int drmModeRmMode(int fd, uint32_t modeId);
213 * Attaches the given mode to an output.
215 extern int drmModeAttachMode(int fd, uint32_t outputId, uint32_t modeId);
218 * Detaches a mode from the output
219 * must be unused, by the given mode.
221 extern int drmModeDetachMode(int fd, uint32_t outputId, uint32_t modeId);
223 extern drmModePropertyPtr drmModeGetProperty(int fd, uint32_t propertyId);
224 extern void drmModeFreeProperty(drmModePropertyPtr ptr);