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@xxxxxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
---
sound/soc/intel/common/sst-ipc.c | 19 ++++++++++++++++++-
sound/soc/intel/common/sst-ipc.h | 1 +
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/sound/soc/intel/common/sst-ipc.c b/sound/soc/intel/common/sst-ipc.c
index a12c7bb08d3b..6ac9a8484635 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);
diff --git a/sound/soc/intel/common/sst-ipc.h b/sound/soc/intel/common/sst-ipc.h
index ceb7e468a3fa..46871a5dff1d 100644
--- a/sound/soc/intel/common/sst-ipc.h
+++ b/sound/soc/intel/common/sst-ipc.h
@@ -52,6 +52,7 @@ struct sst_plat_ipc_ops {
void (*tx_data_copy)(struct ipc_message *, char *, size_t);
u64 (*reply_msg_match)(u64 header, u64 *mask);
bool (*is_dsp_busy)(struct sst_dsp *dsp);
+ int (*check_dsp_lp_on)(struct sst_dsp *dsp, bool state);
};
/* SST generic IPC data */
--
1.9.1
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