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| author | Takashi Iwai <tiwai@suse.de> | 2024-07-29 16:15:17 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-07-30 07:45:55 +0200 |
| commit | 3bb668264db5c68a02b557b3052644181bb4f4be (patch) | |
| tree | 91e2a1d1b14bc7b1c06ae97f9ae52a0bdf7362f9 /Documentation/sound | |
| parent | ALSA: hda: Keep PM disablement for deny-listed instance (diff) | |
| download | linux-3bb668264db5c68a02b557b3052644181bb4f4be.tar.xz linux-3bb668264db5c68a02b557b3052644181bb4f4be.zip | |
ALSA: hda: Enhance pm_blacklist option
We want sometimes to keep the runtime PM disabled persistently just
like we did for the PM deny-list in the previous change, e.g. for
testing some buggy device. This patch enhances the existing
pm_blacklist option for achieving it easily.
The default behavior doesn't change -- the driver looks up the deny
list and disables the runtime PM if matches. However, when
pm_blacklist=1 option is set, now the driver disables the runtime PM
completely, just like the deny-list does.
Update the documentation for this option, too.
Link: https://patch.msgid.link/20240729141519.18398-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa-configuration.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/sound/alsa-configuration.rst b/Documentation/sound/alsa-configuration.rst index 829c672d9fe6..04254474fa04 100644 --- a/Documentation/sound/alsa-configuration.rst +++ b/Documentation/sound/alsa-configuration.rst @@ -1059,6 +1059,9 @@ power_save Automatic power-saving timeout (in second, 0 = disable) power_save_controller Reset HD-audio controller in power-saving mode (default = on) +pm_blacklist + Enable / disable power-management deny-list (default = look up PM + deny-list, 0 = skip PM deny-list, 1 = force to turn off runtime PM) align_buffer_size Force rounding of buffer/period sizes to multiples of 128 bytes. This is more efficient in terms of memory access but isn't |