diff options
| author |   Takashi Iwai <tiwai@suse.de> | 2013-01-09 11:15:13 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-01-09 11:15:13 +0100 |
| commit | 6ab317419c62850a71e2adfd1573e5ee87d8774f (patch) | |
| tree | cb5f0fa631f10797649e40faa6dc257ad72c769c | |
| parent | ALSA: hda - print power state for AFG node in proc file (diff) | |
| download | linux-dev-6ab317419c62850a71e2adfd1573e5ee87d8774f.tar.xz linux-dev-6ab317419c62850a71e2adfd1573e5ee87d8774f.zip | |
ALSA: hda - Allow power_save_controller option override DCAPS
Change the power_save_controller option to bint from bool so that user
can override the runtime PM capability bit and force to enable or
disable the runtime PM.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 5 | ||||
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 6 |
2 files changed, 7 insertions, 4 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index b9cfd339a6fa..ce6581c8ca26 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -890,8 +890,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. enable_msi - Enable Message Signaled Interrupt (MSI) (default = off) power_save - Automatic power-saving timeout (in second, 0 = disable) - power_save_controller - Reset HD-audio controller in power-saving mode - (default = on) + power_save_controller - Support runtime D3 of HD-audio controller + (-1 = on for supported chip (default), false = off, + true = force to on even for unsupported hardware) 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 required by the HDA spec and prevents diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index cca87277baf0..988323577834 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -134,8 +134,8 @@ MODULE_PARM_DESC(power_save, "Automatic power-saving timeout " * this may give more power-saving, but will take longer time to * wake up. */ -static bool power_save_controller = 1; -module_param(power_save_controller, bool, 0644); +static int power_save_controller = -1; +module_param(power_save_controller, bint, 0644); MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode."); #endif /* CONFIG_PM */ @@ -2711,6 +2711,8 @@ static int azx_runtime_idle(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip = card->private_data; + if (power_save_controller > 0) + return 0; if (!power_save_controller || !(chip->driver_caps & AZX_DCAPS_PM_RUNTIME)) return -EBUSY; |