From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
In this mode, on restart the bus restarts immediately, the Slaves
remain synchronized and all context is kept intact.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Signed-off-by: Rander Wang <rander.wang@xxxxxxxxx>
Signed-off-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
---
drivers/soundwire/intel.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 95b14c034ea7..2899445e2649 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1595,7 +1595,8 @@ static int intel_suspend_runtime(struct device *dev)
intel_shim_wake(sdw, false);
- } else if (clock_stop_quirks & SDW_INTEL_CLK_STOP_BUS_RESET) {
+ } else if (clock_stop_quirks & SDW_INTEL_CLK_STOP_BUS_RESET ||
+ !clock_stop_quirks) {
ret = sdw_cdns_clock_stop(cdns, true);
if (ret < 0) {
dev_err(dev, "cannot enable clock stop on suspend\n");
@@ -1755,6 +1756,24 @@ static int intel_resume_runtime(struct device *dev)
dev_err(dev, "unable to restart clock during resume\n");
return ret;
}
+ } else if (!clock_stop_quirks) {
+ ret = intel_init(sdw);
+ if (ret) {
+ dev_err(dev, "%s failed: %d", __func__, ret);
+ return ret;
+ }
+
+ ret = sdw_cdns_enable_interrupt(cdns, true);
+ if (ret < 0) {
+ dev_err(dev, "cannot enable interrupts during resume\n");
+ return ret;
+ }
+
+ ret = sdw_cdns_clock_restart(cdns, false);
+ if (ret < 0) {
+ dev_err(dev, "unable to resume master during resume\n");
+ return ret;
+ }
} else {
dev_err(dev, "%s clock_stop_quirks %x unsupported\n",
__func__, clock_stop_quirks);
--
2.17.1
