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authorImre Deak <imre.deak@intel.com>2017-06-29 18:37:02 +0300
committerImre Deak <imre.deak@intel.com>2017-07-06 16:42:15 +0300
commitb38131fbcba5e16e94db7f0a6334446ffd157204 (patch)
tree050fe5eb4e9252820db7692593b4a9c856f8f137 /drivers/gpu/drm/i915
parent42d9366d41a992631abaa15f5a881ae1235a8203 (diff)
downloadlinux-b38131fbcba5e16e94db7f0a6334446ffd157204.tar.xz
drm/i915/cnl: Fix comment about AUX IO power well enable/disable
The comments match an earlier version of the patch, fix them to match the current state. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1498750622-14023-6-git-send-email-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915')
-rw-r--r--drivers/gpu/drm/i915/intel_runtime_pm.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 2fe715b25f9e..5eb9c5ec9c85 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -2845,7 +2845,10 @@ static void cnl_display_core_init(struct drm_i915_private *dev_priv, bool resume
val |= CL_POWER_DOWN_ENABLE;
I915_WRITE(CNL_PORT_CL1CM_DW5, val);
- /* 4. Enable Power Well 1 (PG1) and Aux IO Power */
+ /*
+ * 4. Enable Power Well 1 (PG1).
+ * The AUX IO power wells will be enabled on demand.
+ */
mutex_lock(&power_domains->lock);
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
intel_power_well_enable(dev_priv, well);
@@ -2877,7 +2880,11 @@ static void cnl_display_core_uninit(struct drm_i915_private *dev_priv)
/* 3. Disable CD clock */
cnl_uninit_cdclk(dev_priv);
- /* 4. Disable Power Well 1 (PG1) and Aux IO Power */
+ /*
+ * 4. Disable Power Well 1 (PG1).
+ * The AUX IO power wells are toggled on demand, so they are already
+ * disabled at this point.
+ */
mutex_lock(&power_domains->lock);
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
intel_power_well_disable(dev_priv, well);