diff options
Diffstat (limited to 'sound/soc/intel/skylake/skl.c')
| -rw-r--r-- | sound/soc/intel/skylake/skl.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index 67a4c4e13545..91e5a7753eba 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -184,6 +184,25 @@ void skl_update_d0i3c(struct device *dev, bool enable) snd_hdac_chip_readb(bus, VS_D0I3C)); } +/** + * skl_dum_set - set DUM bit in EM2 register + * @bus: HD-audio core bus + * + * Addresses incorrect position reporting for capture streams. + * Used on device power up. + */ +static void skl_dum_set(struct hdac_bus *bus) +{ + /* For the DUM bit to be set, CRST needs to be out of reset state */ + if (!(snd_hdac_chip_readb(bus, GCTL) & AZX_GCTL_RESET)) { + skl_enable_miscbdcge(bus->dev, false); + snd_hdac_bus_exit_link_reset(bus); + skl_enable_miscbdcge(bus->dev, true); + } + + snd_hdac_chip_updatel(bus, VS_EM2, AZX_VS_EM2_DUM, AZX_VS_EM2_DUM); +} + /* called from IRQ */ static void skl_stream_update(struct hdac_bus *bus, struct hdac_stream *hstr) { @@ -291,6 +310,7 @@ static int _skl_resume(struct hdac_bus *bus) struct skl *skl = bus_to_skl(bus); skl_init_pci(skl); + skl_dum_set(bus); skl_init_chip(bus, true); return skl_resume_dsp(skl); @@ -948,6 +968,7 @@ static int skl_first_init(struct hdac_bus *bus) /* initialize chip */ skl_init_pci(skl); + skl_dum_set(bus); return skl_init_chip(bus, true); } |