forked from Minki/linux
5cb8eaa227
Originally by Seth Forshee <seth.forshee@canonical.com>, 2012-10-04:
Some dual graphics machines support muxing the DDC separately from
the display, so make use of this functionality when reading the EDID
on the inactive GPU. Also serialize drm_get_edid() with a mutex to
avoid races on the DDC mux state.
Modified by Dave Airlie <airlied@gmail.com>, 2012-12-22:
I can't figure out why I didn't like this, but I rewrote this [...]
to lock/unlock the ddc lines [...]. I think I'd prefer something
like that otherwise the interface got really ugly.
Modified by Lukas Wunner <lukas@wunner.de>, 2015-04 - 2015-09:
v3: Move vga_switcheroo calls to a wrapper around drm_get_edid()
which drivers can call on muxed machines. This avoids other
drivers having to go through the vga_switcheroo motions even
though they are never used on a muxed platform
(Thierry Reding, Daniel Vetter, Alex Deucher)
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115
Tested-by: Pierre Moreau <pierre.morrow@free.fr>
[MBP 5,3 2009 nvidia MCP79 + G96 pre-retina 15"]
Tested-by: William Brown <william@blackhats.net.au>
[MBP 8,2 2011 intel SNB + amd turks pre-retina 15"]
Tested-by: Lukas Wunner <lukas@wunner.de>
[MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina 15"]
Cc: Seth Forshee <seth.forshee@canonical.com>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/b898d0da4c134f2642d0122479006863e1830723.1452525860.git.lukas@wunner.de
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| .. | ||
| bridge | ||
| i2c | ||
| ttm | ||
| ati_pcigart.h | ||
| drm_agpsupport.h | ||
| drm_atomic_helper.h | ||
| drm_atomic.h | ||
| drm_cache.h | ||
| drm_core.h | ||
| drm_crtc_helper.h | ||
| drm_crtc.h | ||
| drm_displayid.h | ||
| drm_dp_helper.h | ||
| drm_dp_mst_helper.h | ||
| drm_edid.h | ||
| drm_encoder_slave.h | ||
| drm_fb_cma_helper.h | ||
| drm_fb_helper.h | ||
| drm_fixed.h | ||
| drm_flip_work.h | ||
| drm_gem_cma_helper.h | ||
| drm_gem.h | ||
| drm_global.h | ||
| drm_hashtab.h | ||
| drm_legacy.h | ||
| drm_mem_util.h | ||
| drm_mipi_dsi.h | ||
| drm_mm.h | ||
| drm_modes.h | ||
| drm_modeset_helper_vtables.h | ||
| drm_modeset_lock.h | ||
| drm_of.h | ||
| drm_os_linux.h | ||
| drm_panel.h | ||
| drm_pciids.h | ||
| drm_plane_helper.h | ||
| drm_rect.h | ||
| drm_sysfs.h | ||
| drm_vma_manager.h | ||
| drmP.h | ||
| exynos_drm.h | ||
| gma_drm.h | ||
| i915_component.h | ||
| i915_drm.h | ||
| i915_pciids.h | ||
| intel-gtt.h | ||