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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>
This commit is contained in:
Vinod Koul 2016-09-26 11:05:28 +05:30 committed by Mark Brown
parent 6a7f5e4112
commit f999d1fd69
2 changed files with 19 additions and 1 deletions
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19
sound/soc/intel/common/sst-ipc.c
View File

@ -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);

1
sound/soc/intel/common/sst-ipc.h
View File

@ -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 */