mirror of https://gitee.com/openkylin/linux.git
02e792fbaa
This implements intel overlay support for kms via a device-specific ioctl. Thomas Hellstrom brought up the idea of a general ioctl (on dri-devel). We've reached the conclusion that such an infrastructure only makes sense when multiple kms overlay implementations exists, which atm don't (and it doesn't look like this is gonna change). Open issues: - Runs in sync with the gpu, i.e. unnecessary waiting. I've decided to wait on this because the hw tends to hang when changing something in this area. I left some dummy functions as infrastructure. - polyphase filtering uses a static table. - uses uninterruptible sleeps. Unfortunately the alternatives may unnecessarily wedged the hw if/when we timeout too early (and userspace only overloaded the batch buffers with stuff worth a few secs of gpu time). Changes since v1: - fix off-by-one misconception on my side. This fixes fullscreen playback. Changes since v2: - add underrun detection as spec'ed for i965. - flush caches properly, fixing visual corruptions. Changes since v4: - fix up cache flushing of overlay memory regs. - killed require_pipe_a logic - it hangs the chip. Tested-By: diego.abelenda@gmail.com (on a 865G) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> [anholt: Resolved against the MADVISE ioctl going in before this one] Signed-off-by: Eric Anholt <eric@anholt.net> |
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.. | ||
ttm | ||
Kbuild | ||
drm.h | ||
drmP.h | ||
drm_cache.h | ||
drm_core.h | ||
drm_crtc.h | ||
drm_crtc_helper.h | ||
drm_edid.h | ||
drm_encoder_slave.h | ||
drm_fb_helper.h | ||
drm_hashtab.h | ||
drm_memory.h | ||
drm_mm.h | ||
drm_mode.h | ||
drm_os_linux.h | ||
drm_pciids.h | ||
drm_sarea.h | ||
drm_sman.h | ||
drm_sysfs.h | ||
i810_drm.h | ||
i830_drm.h | ||
i915_drm.h | ||
mga_drm.h | ||
r128_drm.h | ||
radeon_drm.h | ||
savage_drm.h | ||
sis_drm.h | ||
via_drm.h |