Commit 09a8bf81 authored by Jeeja KP's avatar Jeeja KP Committed by Mark Brown

ALSA: hda: check stream decoupled register state

Check stream decoupled register value with requested value
before decoupling/coupling the stream.
Signed-off-by: default avatarJeeja KP <jeeja.kp@intel.com>
Acked-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent a5de5b74
......@@ -128,14 +128,17 @@ void snd_hdac_ext_stream_decouple(struct hdac_ext_bus *ebus,
{
struct hdac_stream *hstream = &stream->hstream;
struct hdac_bus *bus = &ebus->bus;
u32 val;
int mask = AZX_PPCTL_PROCEN(hstream->index);
spin_lock_irq(&bus->reg_lock);
if (decouple)
snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, 0,
AZX_PPCTL_PROCEN(hstream->index));
else
snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL,
AZX_PPCTL_PROCEN(hstream->index), 0);
val = readw(bus->ppcap + AZX_REG_PP_PPCTL) & mask;
if (decouple && !val)
snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, mask);
else if (!decouple && val)
snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, 0);
stream->decoupled = decouple;
spin_unlock_irq(&bus->reg_lock);
}
......
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