In general how it worked is explained here:
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Regards,
Peter Teoh
Not sure which is the name of your video card, but I think in general all the page flip API should have access to the scan buffer (see link above). For Intel these are possible APIs
:
static void do_intel_finish_page_flip(struct drm_device *dev,
void intel_finish_page_flip(struct drm_device *dev, int pipe)
do_intel_finish_page_flip(dev, crtc);
void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
do_intel_finish_page_flip(dev, crtc);
void intel_prepare_page_flip(struct drm_device *dev, int plane)
* is also accompanied by a spurious intel_prepare_page_flip().
inline static void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)
On Sat, Jan 11, 2014 at 9:27 PM, Sannu K <sannumail4foss@xxxxxxxxx> wrote:
Sannu KHi,Thanks and Regards,
I would like to access a monitor's content in kernel mode. I tried but could not find a generic way to access CRTC's scan out buffer in kernel mode. I prefer to do it in kernel mode as an experiment. Any pointers will greatly help.
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Regards,
Peter Teoh
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