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ASoC: Intel: Add sst_ipc_tx_message_nopm

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If the DSP is in low power mode, it needs to be woken up by a "wake" IPC
to set it into the D0 state before we can send any other IPC command.

The call flow is that the driver calls sst_ipc_tx_message_wait() to send any
IPC and this call checks if the device is in low power mode and in that
case we need to send the wake IPC.

So add a new IPC nopm variant which can be called from driver and
doesn't check for power state (as we already know that) and avoids
circular dependency of again checking power state.

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>
This commit is contained in:
Vinod Koul 2016-11-03 17:07:14 +05:30 committed by Mark Brown
parent f999d1fd69
commit 80a0df1819
2 changed files with 11 additions and 0 deletions
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8
sound/soc/intel/common/sst-ipc.c
View File

@ -220,6 +220,14 @@ int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc, u64 header,
}
EXPORT_SYMBOL_GPL(sst_ipc_tx_message_nowait);
int sst_ipc_tx_message_nopm(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,
rx_data, rx_bytes, 1);
}
EXPORT_SYMBOL_GPL(sst_ipc_tx_message_nopm);
struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc,
u64 header)
{

3
sound/soc/intel/common/sst-ipc.h
View File

@ -82,6 +82,9 @@ int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc, u64 header,
int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc, u64 header,
void *tx_data, size_t tx_bytes);
int sst_ipc_tx_message_nopm(struct sst_generic_ipc *ipc, u64 header,
void *tx_data, size_t tx_bytes, void *rx_data, size_t rx_bytes);
struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc,
u64 header);