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Commit f999d1fd authored by Vinod Koul's avatar Vinod Koul Committed by Mark Brown
Browse files

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: default avatarJayachandran B <jayachandran.b@intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 6a7f5e41

sound/soc/intel/common/sst-ipc.c

+18 −1
Original line number Diff line number Diff line
@@ -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);

sound/soc/intel/common/sst-ipc.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */