From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
For backwards compatibility, HDaudio/iDISP links are powered-on when exiting reset, and the existing driver forces them to be powered-off when entering S0ix. In addition, the get/put helpers are invoked directly by the ASoC codec drivers, which a historical layering violation.
Extended links are powered-on by software only, during the probe and DAI startup phases. This calls for a different handling of the 'regular' and 'extended' audio links.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Rander Wang rander.wang@intel.com Reviewed-by: Péter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com --- sound/soc/sof/intel/hda-mlink.c | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-)
diff --git a/sound/soc/sof/intel/hda-mlink.c b/sound/soc/sof/intel/hda-mlink.c index e6b20182f099..8a66c0a67589 100644 --- a/sound/soc/sof/intel/hda-mlink.c +++ b/sound/soc/sof/intel/hda-mlink.c @@ -255,8 +255,12 @@ void hda_bus_ml_put_all(struct hdac_bus *bus) { struct hdac_ext_link *hlink;
- list_for_each_entry(hlink, &bus->hlink_list, list) - snd_hdac_ext_bus_link_put(bus, hlink); + list_for_each_entry(hlink, &bus->hlink_list, list) { + struct hdac_ext2_link *h2link = hdac_ext_link_to_ext2(hlink); + + if (!h2link->alt) + snd_hdac_ext_bus_link_put(bus, hlink); + } } EXPORT_SYMBOL_NS(hda_bus_ml_put_all, SND_SOC_SOF_HDA_MLINK);
@@ -277,7 +281,9 @@ int hda_bus_ml_resume(struct hdac_bus *bus)
/* power up links that were active before suspend */ list_for_each_entry(hlink, &bus->hlink_list, list) { - if (hlink->ref_count) { + struct hdac_ext2_link *h2link = hdac_ext_link_to_ext2(hlink); + + if (!h2link->alt && hlink->ref_count) { ret = snd_hdac_ext_bus_link_power_up(hlink); if (ret < 0) return ret; @@ -289,7 +295,19 @@ EXPORT_SYMBOL_NS(hda_bus_ml_resume, SND_SOC_SOF_HDA_MLINK);
int hda_bus_ml_suspend(struct hdac_bus *bus) { - return snd_hdac_ext_bus_link_power_down_all(bus); + struct hdac_ext_link *hlink; + int ret; + + list_for_each_entry(hlink, &bus->hlink_list, list) { + struct hdac_ext2_link *h2link = hdac_ext_link_to_ext2(hlink); + + if (!h2link->alt) { + ret = snd_hdac_ext_bus_link_power_down(hlink); + if (ret < 0) + return ret; + } + } + return 0; } EXPORT_SYMBOL_NS(hda_bus_ml_suspend, SND_SOC_SOF_HDA_MLINK);