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drm/i915/kbl: KBL also needs to run the SAGV code 

According to BSpec, it's the "core CPUs" that need the code, which
means SKL and KBL, but not BXT.

I don't have a KBL to test this patch on it.

v2: Only SKL should have I915_SAGV_NOT_CONTROLLED.

Cc: stable@vger.kernel.org
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1474578035-424-4-git-send-email-paulo.r.zanoni@intel.com
This commit is contained in:
Paulo Zanoni 2016-09-22 18:00:29 -03:00
parent 56feca9197
commit 6e3100ec21
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/i915/intel_pm.c
View File

@ -2880,8 +2880,14 @@ skl_wm_plane_id(const struct intel_plane *plane)
static bool
intel_has_sagv(struct drm_i915_private *dev_priv)
{
return IS_SKYLAKE(dev_priv) &&
dev_priv->sagv_status != I915_SAGV_NOT_CONTROLLED;
if (IS_KABYLAKE(dev_priv))
return true;
if (IS_SKYLAKE(dev_priv) &&
dev_priv->sagv_status != I915_SAGV_NOT_CONTROLLED)
return true;
return false;
}
/*
@ -2919,7 +2925,7 @@ intel_enable_sagv(struct drm_i915_private *dev_priv)
* Some skl systems, pre-release machines in particular,
* don't actually have an SAGV.
*/
if (ret == -ENXIO) {
if (IS_SKYLAKE(dev_priv) && ret == -ENXIO) {
DRM_DEBUG_DRIVER("No SAGV found on system, ignoring\n");
dev_priv->sagv_status = I915_SAGV_NOT_CONTROLLED;
return 0;
@ -2973,7 +2979,7 @@ intel_disable_sagv(struct drm_i915_private *dev_priv)
* Some skl systems, pre-release machines in particular,
* don't actually have an SAGV.
*/
if (result == -ENXIO) {
if (IS_SKYLAKE(dev_priv) && result == -ENXIO) {
DRM_DEBUG_DRIVER("No SAGV found on system, ignoring\n");
dev_priv->sagv_status = I915_SAGV_NOT_CONTROLLED;
return 0;