From: Libin Yang libin.yang@intel.com
For SKL, only the HDMI codec is in the display power well while the HD-A controller isn't. So the controller flag 'need_i915_power' is not set to release the display power after probe, and the codec flag 'link_power_control" is set to request/release the display power via bus link_power ops.
Signed-off-by: Libin Yang libin.yang@intel.com --- sound/pci/hda/hda_intel.c | 9 +++++++-- sound/pci/hda/patch_hdmi.c | 2 +- 2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 391e4f8..e5597fd 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -345,6 +345,11 @@ enum { #define use_vga_switcheroo(chip) 0 #endif
+#define CONTROLLER_IN_GPU(pci) (((pci)->device == 0x0a0c) || \ + ((pci)->device == 0x0c0c) || \ + ((pci)->device == 0x0d0c) || \ + ((pci)->device == 0x160c)) + static char *driver_short_names[] = { [AZX_DRIVER_ICH] = "HDA Intel", [AZX_DRIVER_PCH] = "HDA Intel PCH", @@ -1976,8 +1981,8 @@ static int azx_probe_continue(struct azx *chip) * display codec needs the power and it can be released after probe. */ if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) { - /* Baytral/Braswell controllers don't need this power */ - if (pci->device != 0x0f04 && pci->device != 0x2284) + /* HSW/BDW controllers need this power */ + if (CONTROLLER_IN_GPU(pci)) hda->need_i915_power = 1;
err = snd_hdac_i915_init(bus); diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 73c20c0..407978b 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2339,7 +2339,7 @@ static int patch_generic_hdmi(struct hda_codec *codec) * can cover the codec power request, and so need not set this flag. * For previous platforms, there is no such power well feature. */ - if (is_valleyview_plus(codec)) + if (is_valleyview_plus(codec) || is_skylake(codec)) codec->core.link_power_control = 1;
if (is_haswell_plus(codec) || is_valleyview_plus(codec))