linux_dsm_epyc7002/drivers/gpu
Imre Deak 16e849145d drm/i915: Preserve the state of power wells not explicitly enabled
Atm, power wells that BIOS has enabled, but which we don't explicitly
enable during power domain initialization would get disabled as we clear
the BIOS request bit in the given power well sync_hw hook. To prevent
this copy over any set request bits in the BIOS request register to the
driver request register and clear the BIOS request bit only afterwards.

This doesn't make a difference now, since we enable all power wells
during power domain initialization. A follow-up patchset will add power
wells for which this isn't true, so fix up the inconsistency.

Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1487345986-26511-5-git-send-email-imre.deak@intel.com
2017-02-20 14:53:12 +02:00
..
drm drm/i915: Preserve the state of power wells not explicitly enabled 2017-02-20 14:53:12 +02:00
host1x gpu: host1x: Add locking to syncpt 2016-11-11 15:33:13 +01:00
ipu-v3
vga vgaarb: use valid dev pointer in vgaarb_info() 2016-11-22 16:40:35 +01:00
Makefile