From: Liam Girdwood liam.r.girdwood@linux.intel.com
Suspend/resume requires reloading FW to boot state so we need to also make sure that the driver matches the FW state at boot.
Signed-off-by: Liam Girdwood liam.r.girdwood@linux.intel.com Signed-off-by: Jarkko Nikula jarkko.nikula@linux.intel.com --- sound/soc/intel/sst-baytrail-ipc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/sound/soc/intel/sst-baytrail-ipc.c b/sound/soc/intel/sst-baytrail-ipc.c index 8941ff2f4b78..2487b6e2dfec 100644 --- a/sound/soc/intel/sst-baytrail-ipc.c +++ b/sound/soc/intel/sst-baytrail-ipc.c @@ -299,6 +299,24 @@ static inline void sst_byt_tx_msg_reply_complete(struct sst_byt *byt, wake_up(&msg->waitq); }
+static void sst_byt_drop_all(struct sst_byt *byt) +{ + struct ipc_message *msg, *tmp; + unsigned long flags; + + /* drop all TX and Rx messages before we stall + reset DSP */ + spin_lock_irqsave(&byt->dsp->spinlock, flags); + list_for_each_entry_safe(msg, tmp, &byt->tx_list, list) { + list_move(&msg->list, &byt->empty_list); + } + + list_for_each_entry_safe(msg, tmp, &byt->rx_list, list) { + list_move(&msg->list, &byt->empty_list); + } + + spin_unlock_irqrestore(&byt->dsp->spinlock, flags); +} + static int sst_byt_tx_wait_done(struct sst_byt *byt, struct ipc_message *msg, void *rx_data) {