]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
drm/i915: Introduce a gmbus power domain
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Fri, 27 Nov 2015 16:55:26 +0000 (18:55 +0200)
committerJani Nikula <jani.nikula@intel.com>
Wed, 2 Dec 2015 14:42:46 +0000 (16:42 +0200)
commitac9b8236551d1177fd07b56aef9b565d1864420d
tree01ad12841f0dd5991af82fd0c7dc2b3b4705ce88
parenta781ce79d51fc4952870c998937980a042927e84
drm/i915: Introduce a gmbus power domain

Currently the gmbus code uses intel_aux_display_runtime_get/put in an
effort to make sure the hardware is powered up sufficiently for gmbus.
That function only takes the runtime PM reference which on VLV/CHV/BXT
is not enough. We need the disp2d/pipe-a well on VLV/CHV and power well
2 on BXT. So add a new power domnain for gmbus and kill off the now
unused intel_aux_display_runtime_get/put. And change
intel_hdmi_set_edid() to use the gmbus power domain too since that's all
we need there.

Also toss in a BUILD_BUG_ON() to catch problems if we run out of
bits for power domains. We're already really close to the limit...

[Patrik: Add gmbus string to debugfs output]

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
[Cherry-picked from drm-intel-next-queued f0ab43e6 (Imre)]
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448643329-18675-3-git-send-email-imre.deak@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/i915_debugfs.c
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/intel_drv.h
drivers/gpu/drm/i915/intel_hdmi.c
drivers/gpu/drm/i915/intel_i2c.c
drivers/gpu/drm/i915/intel_runtime_pm.c