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authorVinod Koul <vinod.koul@intel.com>2015-12-18 15:12:02 +0530
committerMark Brown <broonie@kernel.org>2016-01-10 12:02:47 +0000
commit6706a19747eb693ff35ce140f5cbee66dcfec0c4 (patch)
tree51e61839b5e5a72217bb3d642cd64649b2d4b9ce /sound/hda
parentcf8fe58b1066cea668e030d0ab61e4b8eef8b219 (diff)
downloadlinux-6706a19747eb693ff35ce140f5cbee66dcfec0c4.tar.bz2
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.c21
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
*/