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check drm support dumb buffer capability

This commit is contained in:
Dave Airlie 2011-09-29 16:06:52 +01:00
parent 6ccd13a2d7
commit cb65ec6b58
1 changed files with 11 additions and 0 deletions
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11
hw/xfree86/drivers/modesetting/drmmode_display.c
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@ -1016,6 +1016,17 @@ static const xf86CrtcConfigFuncsRec drmmode_xf86crtc_config_funcs = {
Bool drmmode_pre_init(ScrnInfoPtr pScrn, drmmode_ptr drmmode, int cpp)
{
int i, num_dvi = 0, num_hdmi = 0;
int ret;
/* check for dumb capability */
{
uint64_t value = 0;
ret = drmGetCap(drmmode->fd, DRM_CAP_DUMB_BUFFER, &value);
if (ret > 0 || value != 1) {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "KMS doesn't support dumb interface\n");
return FALSE;
}
}
xf86CrtcConfigInit(pScrn, &drmmode_xf86crtc_config_funcs);