[PATCH v3 10/22] soundwire: intel: call helper to reset Slave states on resume

[Pierre-Louis Bossart]

This helps make sure they are all UNATTACHED and reset the state
machines.

At the moment we perform a bus reset both for resume and pm_resume,
this will be modified when clock-stop mode is supported

Signed-off-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
 drivers/soundwire/intel.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index b2bc99970245..e3741c3afe1c 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1402,6 +1402,9 @@ static int intel_resume(struct device *dev)
 		return ret;
 	}
 
+	/* make sure all Slaves are tagged as UNATTACHED */
+	sdw_clear_slave_status(&sdw->cdns.bus);
+
 	ret = sdw_cdns_enable_interrupt(cdns, true);
 	if (ret < 0) {
 		dev_err(dev, "cannot enable interrupts during resume\n");
@@ -1435,6 +1438,9 @@ static int intel_resume_runtime(struct device *dev)
 		return ret;
 	}
 
+	/* make sure all Slaves are tagged as UNATTACHED */
+	sdw_clear_slave_status(&sdw->cdns.bus);
+
 	ret = sdw_cdns_enable_interrupt(cdns, true);
 	if (ret < 0) {
 		dev_err(dev, "cannot enable interrupts during resume\n");
-- 
2.20.1