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| author | Vinod Koul <vinod.koul@intel.com> | 2015-12-18 10:42:02 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-01-10 13:02:47 +0100 |
| commit | 6706a19747eb693ff35ce140f5cbee66dcfec0c4 (patch) | |
| tree | 51e61839b5e5a72217bb3d642cd64649b2d4b9ce /sound/hda | |
| parent | ALSA: hdac: Increase timeout value for link power check (diff) | |
| download | linux-6706a19747eb693ff35ce140f5cbee66dcfec0c4.tar.xz linux-6706a19747eb693ff35ce140f5cbee66dcfec0c4.zip | |
ALSA: hdac: add snd_hdac_ext_bus_link_power_up_all
We have an API for powering down all links, we need a similar one
for powering up links, so add for power up as well
Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/hda')
| -rw-r--r-- | sound/hda/ext/hdac_ext_controller.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sound/hda/ext/hdac_ext_controller.c b/sound/hda/ext/hdac_ext_controller.c index 1a55a781270d..548cc1e4114b 100644 --- a/sound/hda/ext/hdac_ext_controller.c +++ b/sound/hda/ext/hdac_ext_controller.c @@ -288,6 +288,27 @@ int snd_hdac_ext_bus_link_power_down(struct hdac_ext_link *link) EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_down); /** + * snd_hdac_ext_bus_link_power_up_all -power up all hda link + * @ebus: HD-audio extended bus + */ +int snd_hdac_ext_bus_link_power_up_all(struct hdac_ext_bus *ebus) +{ + struct hdac_ext_link *hlink = NULL; + int ret; + + list_for_each_entry(hlink, &ebus->hlink_list, list) { + snd_hdac_updatel(hlink->ml_addr, + AZX_REG_ML_LCTL, 0, AZX_MLCTL_SPA); + ret = check_hdac_link_power_active(hlink, true); + if (ret < 0) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_link_power_up_all); + +/** * snd_hdac_ext_bus_link_power_down_all -power down all hda link * @ebus: HD-audio extended bus */ |