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Takashi Iwai 7e31a01594 ALSA: hda - Apply clock gate workaround to Skylake, too 
Some Skylake machines show the codec probe errors in certain
situations, e.g. HP Z240 desktop fails to probe the onboard Realtek
codec at reloading the snd-hda-intel module like:
  snd_hda_intel 0000:00:1f.3: spurious response 0x200:0x2, last cmd=0x000000
  snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: lastcmd=0x000f0000
  snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x000f0000
  snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...
  hdaudio hdaudioC0D2: no AFG or MFG node found
  snd_hda_intel 0000:00:1f.3: no codecs initialized

Also, HP G470 G3 suffers from the similar problem, as reported in
bugzilla below.  On this machine, the codec probe error appears even
at a fresh boot.

As Libin suggested, the same workaround used for Broxton in the commit
[6639484dda: ALSA: hda - disable dynamic clock gating on Broxton
 before reset] can be applied for Skylake in order to fix this problem.
The Intel HW team also confirmed that this is needed for SKL.

This patch makes the workaround applied to both SKL and BXT
platforms.  The referred macros are moved and one superfluous macro
(IS_BROXTON()) is another one (IS_BXT()) as well.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=112731
Suggested-by: Libin Yang <libin.yang@linux.intel.com>
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-22 17:13:48 +01:00
..
aoa
arm ASoC: pxa: pxa-pcm-lib: switch over to snd-soc-dmaengine-pcm 2015-09-30 23:21:16 +01:00
atmel
core ALSA: pcm: Fix rwsem deadlock for non-atomic PCM stream 2016-02-18 11:27:52 +01:00
drivers ALSA: dummy: Implement timer backend switching more safely 2016-02-08 08:15:35 +01:00
firewire ALSA: firewire-digi00x: Drop bogus const type qualifier on dot_scrt() 2016-02-09 12:16:52 +01:00
hda ALSA: hda - Degrade i915 binding failure message 2016-01-20 15:00:26 +01:00
i2c ALSA: i2c: constify snd_i2c_ops structures 2015-11-30 11:40:08 +01:00
isa ALSA: Add missing dependency on CONFIG_SND_TIMER 2016-01-27 07:10:38 +01:00
mips
oss sound/oss: remove VIRT_TO_BUS dependency 2015-12-09 14:40:51 +01:00
parisc
pci ALSA: hda - Apply clock gate workaround to Skylake, too 2016-02-22 17:13:48 +01:00
pcmcia
ppc
sh
soc Merge remote-tracking branches 'asoc/fix/rt5659', 'asoc/fix/sigmadsp', 'asoc/fix/simple', 'asoc/fix/wm5110' and 'asoc/fix/wm8960' into asoc-linus 2016-02-10 19:23:09 +00:00
sparc ALSA: Add missing dependency on CONFIG_SND_TIMER 2016-01-27 07:10:38 +01:00
spi ALSA: at73c213: manage SSC clock 2016-01-20 09:59:27 +01:00
synth ALSA: emux: constify nrpn_conv_table structures 2016-01-06 10:19:49 +01:00
usb ALSA: usb-audio: avoid freeing umidi object twice 2016-02-13 09:30:58 +01:00
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c sound: fix check for error condition of register_chrdev() 2015-11-07 11:14:30 +01:00
sound_firmware.c