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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-11-09 16:48:19 +0100 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2015-11-17 20:55:18 +0200 |
| commit | f0ab43e6c338896cadee64ced3fc30a5343890d9 (patch) | |
| tree | c6f66d02d01aada62a5422fabf343665de0279bc /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 25f78f58e5bfb46a270ce4d690fb49dc104558b1 (diff) | |
| download | lwn-f0ab43e6c338896cadee64ced3fc30a5343890d9.tar.gz lwn-f0ab43e6c338896cadee64ced3fc30a5343890d9.zip | |
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>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447084107-8521-5-git-send-email-patrik.jakobsson@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index b9ed2274f8b1..648184ecd357 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -199,6 +199,7 @@ enum intel_display_power_domain { POWER_DOMAIN_AUX_B, POWER_DOMAIN_AUX_C, POWER_DOMAIN_AUX_D, + POWER_DOMAIN_GMBUS, POWER_DOMAIN_INIT, POWER_DOMAIN_NUM, |