hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ALSA: hda - remove controller dependency on i915 power well for SKL 

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Libin Yang 2015-06-03 09:30:15 +08:00 committed by Takashi Iwai
parent 0cbf324e90
commit 03b135cebc
2 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
sound/pci/hda/hda_intel.c
View File

@ -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);

2
sound/pci/hda/patch_hdmi.c
View File

@ -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))