From: Vinod Koul Date: Mon, 26 Sep 2016 05:35:28 +0000 (+0530) Subject: ASoC: Intel: Add check_dsp_lp_on callback on IPC X-Git-Tag: v4.14-rc1~1892^2~3^2~15^2~23 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f999d1fd69ede11012a872cbdba33bd9c9c2e386;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: Vinod Koul Signed-off-by: Mark Brown --- 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); diff --git a/sound/soc/intel/common/sst-ipc.h b/sound/soc/intel/common/sst-ipc.h index ceb7e46..46871a5 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 */