3
* Header for DRM modesetting interface.
5
* \author Jakob Bornecrantz <wallbraker@gmail.com>
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* \par Acknowledgements:
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* Feb 2007, Dave Airlie <airlied@linux.ie>
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* Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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* Copyright (c) 2007-2008 Dave Airlie <airlied@linux.ie>
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* Copyright (c) 2007-2008 Jakob Bornecrantz <wallbraker@gmail.com>
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* TODO the types we are after are defined in diffrent headers on diffrent
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* platforms find which headers to include to get uint32_t
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#include <sys/ioctl.h>
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#include "xf86drmMode.h"
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#define U642VOID(x) ((void *)(unsigned long)(x))
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#define VOID2U64(x) ((uint64_t)(unsigned long)(x))
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void* drmAllocCpy(void *array, int count, int entry_size)
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if (!count || !array || !entry_size)
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if (!(r = drmMalloc(count*entry_size)))
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for (i = 0; i < count; i++)
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memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
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* A couple of free functions.
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void drmModeFreeModeInfo(drmModeModeInfoPtr ptr)
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void drmModeFreeResources(drmModeResPtr ptr)
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void drmModeFreeFB(drmModeFBPtr ptr)
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/* we might add more frees later. */
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void drmModeFreeCrtc(drmModeCrtcPtr ptr)
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void drmModeFreeConnector(drmModeConnectorPtr ptr)
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drmFree(ptr->encoders);
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drmFree(ptr->prop_values);
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void drmModeFreeEncoder(drmModeEncoderPtr ptr)
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* ModeSetting functions.
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drmModeResPtr drmModeGetResources(int fd)
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struct drm_mode_card_res res;
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memset(&res, 0, sizeof(struct drm_mode_card_res));
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
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res.fb_id_ptr = VOID2U64(drmMalloc(res.count_fbs*sizeof(uint32_t)));
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res.crtc_id_ptr = VOID2U64(drmMalloc(res.count_crtcs*sizeof(uint32_t)));
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if (res.count_connectors)
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res.connector_id_ptr = VOID2U64(drmMalloc(res.count_connectors*sizeof(uint32_t)));
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if (res.count_encoders)
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res.encoder_id_ptr = VOID2U64(drmMalloc(res.count_encoders*sizeof(uint32_t)));
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res)) {
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if (!(r = drmMalloc(sizeof(*r))))
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r->min_width = res.min_width;
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r->max_width = res.max_width;
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r->min_height = res.min_height;
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r->max_height = res.max_height;
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r->count_fbs = res.count_fbs;
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r->count_crtcs = res.count_crtcs;
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r->count_connectors = res.count_connectors;
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r->count_encoders = res.count_encoders;
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/* TODO we realy should test if these allocs fails. */
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r->fbs = drmAllocCpy(U642VOID(res.fb_id_ptr), res.count_fbs, sizeof(uint32_t));
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r->crtcs = drmAllocCpy(U642VOID(res.crtc_id_ptr), res.count_crtcs, sizeof(uint32_t));
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r->connectors = drmAllocCpy(U642VOID(res.connector_id_ptr), res.count_connectors, sizeof(uint32_t));
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r->encoders = drmAllocCpy(U642VOID(res.encoder_id_ptr), res.count_encoders, sizeof(uint32_t));
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drmFree(U642VOID(res.fb_id_ptr));
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drmFree(U642VOID(res.crtc_id_ptr));
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drmFree(U642VOID(res.connector_id_ptr));
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drmFree(U642VOID(res.encoder_id_ptr));
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int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
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uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
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struct drm_mode_fb_cmd f;
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f.handle = bo_handle;
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if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_ADDFB, &f)))
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int drmModeRmFB(int fd, uint32_t bufferId)
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return drmIoctl(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
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drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
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struct drm_mode_fb_cmd info;
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETFB, &info))
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if (!(r = drmMalloc(sizeof(*r))))
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r->fb_id = info.fb_id;
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r->width = info.width;
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r->height = info.height;
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r->pitch = info.pitch;
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r->handle = info.handle;
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r->depth = info.depth;
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int drmModeDirtyFB(int fd, uint32_t bufferId,
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drmModeClipPtr clips, uint32_t num_clips)
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struct drm_mode_fb_dirty_cmd dirty = { 0 };
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dirty.fb_id = bufferId;
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dirty.clips_ptr = VOID2U64(clips);
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dirty.num_clips = num_clips;
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return drmIoctl(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
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drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
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struct drm_mode_crtc crtc;
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crtc.crtc_id = crtcId;
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
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if (!(r = drmMalloc(sizeof(*r))))
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r->crtc_id = crtc.crtc_id;
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r->mode_valid = crtc.mode_valid;
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memcpy(&r->mode, &crtc.mode, sizeof(struct drm_mode_modeinfo));
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r->buffer_id = crtc.fb_id;
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r->gamma_size = crtc.gamma_size;
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int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
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uint32_t x, uint32_t y, uint32_t *connectors, int count,
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drmModeModeInfoPtr mode)
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struct drm_mode_crtc crtc;
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crtc.crtc_id = crtcId;
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crtc.fb_id = bufferId;
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crtc.set_connectors_ptr = VOID2U64(connectors);
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crtc.count_connectors = count;
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memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
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return drmIoctl(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
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* Cursor manipulation
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int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height)
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struct drm_mode_cursor arg;
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arg.flags = DRM_MODE_CURSOR_BO;
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arg.crtc_id = crtcId;
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arg.handle = bo_handle;
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return drmIoctl(fd, DRM_IOCTL_MODE_CURSOR, &arg);
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int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
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struct drm_mode_cursor arg;
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arg.flags = DRM_MODE_CURSOR_MOVE;
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arg.crtc_id = crtcId;
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return drmIoctl(fd, DRM_IOCTL_MODE_CURSOR, &arg);
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drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
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struct drm_mode_get_encoder enc;
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drmModeEncoderPtr r = NULL;
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enc.encoder_id = encoder_id;
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enc.encoder_type = 0;
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enc.possible_crtcs = 0;
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enc.possible_clones = 0;
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
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if (!(r = drmMalloc(sizeof(*r))))
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r->encoder_id = enc.encoder_id;
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r->crtc_id = enc.crtc_id;
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r->encoder_type = enc.encoder_type;
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r->possible_crtcs = enc.possible_crtcs;
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r->possible_clones = enc.possible_clones;
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* Connector manipulation
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drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
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struct drm_mode_get_connector conn;
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drmModeConnectorPtr r = NULL;
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conn.connector_id = connector_id;
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conn.connector_type_id = 0;
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conn.connector_type = 0;
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conn.count_modes = 0;
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conn.count_props = 0;
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conn.prop_values_ptr = 0;
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conn.count_encoders = 0;
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conn.encoders_ptr = 0;
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
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if (conn.count_props) {
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conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
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conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
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if (conn.count_modes)
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conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
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if (conn.count_encoders)
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conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
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if(!(r = drmMalloc(sizeof(*r)))) {
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r->connector_id = conn.connector_id;
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r->encoder_id = conn.encoder_id;
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r->connection = conn.connection;
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r->mmWidth = conn.mm_width;
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r->mmHeight = conn.mm_height;
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/* convert subpixel from kernel to userspace */
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r->subpixel = conn.subpixel + 1;
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r->count_modes = conn.count_modes;
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/* TODO we should test if these alloc & cpy fails. */
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r->count_props = conn.count_props;
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r->props = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
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r->prop_values = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
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r->modes = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
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r->count_encoders = conn.count_encoders;
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r->encoders = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
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r->connector_type = conn.connector_type;
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r->connector_type_id = conn.connector_type_id;
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if (!r->props || !r->prop_values || !r->modes || !r->encoders)
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drmFree(U642VOID(conn.prop_values_ptr));
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drmFree(U642VOID(conn.props_ptr));
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drmFree(U642VOID(conn.modes_ptr));
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drmFree(U642VOID(conn.encoders_ptr));
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int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
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struct drm_mode_mode_cmd res;
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memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
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res.connector_id = connector_id;
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return drmIoctl(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
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int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
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struct drm_mode_mode_cmd res;
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memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
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res.connector_id = connector_id;
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return drmIoctl(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
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drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
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struct drm_mode_get_property prop;
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drmModePropertyPtr r;
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prop.prop_id = property_id;
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prop.count_enum_blobs = 0;
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prop.count_values = 0;
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prop.enum_blob_ptr = 0;
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
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if (prop.count_values)
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prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
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if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_ENUM))
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prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
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if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
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prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
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prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
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if (!(r = drmMalloc(sizeof(*r))))
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r->prop_id = prop.prop_id;
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r->count_values = prop.count_values;
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r->flags = prop.flags;
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if (prop.count_values)
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r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
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if (prop.flags & DRM_MODE_PROP_ENUM) {
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r->count_enums = prop.count_enum_blobs;
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r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
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} else if (prop.flags & DRM_MODE_PROP_BLOB) {
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r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
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r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
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r->count_blobs = prop.count_enum_blobs;
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strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
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r->name[DRM_PROP_NAME_LEN-1] = 0;
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drmFree(U642VOID(prop.values_ptr));
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drmFree(U642VOID(prop.enum_blob_ptr));
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void drmModeFreeProperty(drmModePropertyPtr ptr)
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drmFree(ptr->values);
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drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id)
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struct drm_mode_get_blob blob;
531
drmModePropertyBlobPtr r;
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blob.blob_id = blob_id;
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
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blob.data = VOID2U64(drmMalloc(blob.length));
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if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
548
if (!(r = drmMalloc(sizeof(*r))))
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r->id = blob.blob_id;
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r->length = blob.length;
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r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
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drmFree(U642VOID(blob.data));
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void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
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int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
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struct drm_mode_connector_set_property osp;
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osp.connector_id = connector_id;
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osp.prop_id = property_id;
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if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp)))
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* checks if a modesetting capable driver has attached to the pci id
587
* returns 0 if modesetting supported.
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* -EINVAL or invalid bus id
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* -ENOSYS if no modesetting support
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int drmCheckModesettingSupported(const char *busid)
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char pci_dev_dir[1024];
595
int domain, bus, dev, func;
600
ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
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sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
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domain, bus, dev, func);
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sysdir = opendir(pci_dev_dir);
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dent = readdir(sysdir);
611
if (!strncmp(dent->d_name, "controlD", 8)) {
616
dent = readdir(sysdir);
623
sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
624
domain, bus, dev, func);
626
sysdir = opendir(pci_dev_dir);
630
dent = readdir(sysdir);
632
if (!strncmp(dent->d_name, "drm:controlD", 12)) {
637
dent = readdir(sysdir);
648
int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
649
uint16_t *red, uint16_t *green, uint16_t *blue)
652
struct drm_mode_crtc_lut l;
656
l.red = VOID2U64(red);
657
l.green = VOID2U64(green);
658
l.blue = VOID2U64(blue);
660
if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_GETGAMMA, &l)))
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int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
667
uint16_t *red, uint16_t *green, uint16_t *blue)
670
struct drm_mode_crtc_lut l;
674
l.red = VOID2U64(red);
675
l.green = VOID2U64(green);
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l.blue = VOID2U64(blue);
678
if ((ret = drmIoctl(fd, DRM_IOCTL_MODE_SETGAMMA, &l)))
684
int drmHandleEvent(int fd, drmEventContextPtr evctx)
689
struct drm_event_vblank *vblank;
691
/* The DRM read semantics guarantees that we always get only
692
* complete events. */
694
len = read(fd, buffer, sizeof buffer);
702
e = (struct drm_event *) &buffer[i];
704
case DRM_EVENT_VBLANK:
705
if (evctx->version < 1 ||
706
evctx->vblank_handler == NULL)
708
vblank = (struct drm_event_vblank *) e;
709
evctx->vblank_handler(fd,
713
U642VOID (vblank->user_data));
715
case DRM_EVENT_FLIP_COMPLETE:
716
if (evctx->version < 2 ||
717
evctx->page_flip_handler == NULL)
719
vblank = (struct drm_event_vblank *) e;
720
evctx->page_flip_handler(fd,
724
U642VOID (vblank->user_data));
735
int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
736
uint32_t flags, void *user_data)
738
struct drm_mode_crtc_page_flip flip;
741
flip.crtc_id = crtc_id;
742
flip.user_data = VOID2U64(user_data);
746
return drmIoctl(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);