ASoC: Intel: Add check_dsp_lp_on callback on IPC
Some controllers support power modes which can't communicate using IPC.
So add a callback to check and wake DSP before sending IPC and then put
to sleep if it is in these power modes.
Signed-off-by: Jayachandran B <jayachandran.b@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/intel/common/sst-ipc.c b/sound/soc/intel/common/sst-ipc.c
index 6c672ac..45a8519 100644
--- a/sound/soc/intel/common/sst-ipc.c
+++ b/sound/soc/intel/common/sst-ipc.c
@@ -190,8 +190,25 @@ static void ipc_tx_msgs(struct kthread_work *work)
int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc, u64 header,
void *tx_data, size_t tx_bytes, void *rx_data, size_t rx_bytes)
{
- return ipc_tx_message(ipc, header, tx_data, tx_bytes,
+ int ret;
+
+ /*
+ * DSP maybe in lower power active state, so
+ * check if the DSP supports DSP lp On method
+ * if so invoke that before sending IPC
+ */
+ if (ipc->ops.check_dsp_lp_on)
+ if (ipc->ops.check_dsp_lp_on(ipc->dsp, true))
+ return -EIO;
+
+ ret = ipc_tx_message(ipc, header, tx_data, tx_bytes,
rx_data, rx_bytes, 1);
+
+ if (ipc->ops.check_dsp_lp_on)
+ if (ipc->ops.check_dsp_lp_on(ipc->dsp, false))
+ return -EIO;
+
+ return ret;
}
EXPORT_SYMBOL_GPL(sst_ipc_tx_message_wait);