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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2020-08-17 18:29:15 +0300
committerVinod Koul <vkoul@kernel.org>2020-08-18 09:31:04 +0300
commit99b6a30f9f9995be3698f59df9882490d604f5d1 (patch)
tree102045e57cc67aaa91f7cb22f375cdabfaa73923 /drivers/soundwire/intel.c
parentcb1e6d59e89ce272a67e6dc22e9ec72df622fb1b (diff)
downloadlinux-99b6a30f9f9995be3698f59df9882490d604f5d1.tar.xz
soundwire: intel: call helper to reset Slave states on resume
This helps make sure they are all UNATTACHED and reset the state machines. At the moment we perform a bus reset both for system resume and pm_runtime resume, this will be modified when clock-stop mode is supported Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20200817152923.3259-5-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire/intel.c')
-rw-r--r--drivers/soundwire/intel.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 00c5de1250ec..10dd0e208ce7 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1516,6 +1516,12 @@ static int intel_resume(struct device *dev)
return ret;
}
+ /*
+ * make sure all Slaves are tagged as UNATTACHED and provide
+ * reason for reinitialization
+ */
+ sdw_clear_slave_status(bus, SDW_UNATTACH_REQUEST_MASTER_RESET);
+
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "cannot enable interrupts during resume\n");
@@ -1562,6 +1568,12 @@ static int intel_resume_runtime(struct device *dev)
return ret;
}
+ /*
+ * make sure all Slaves are tagged as UNATTACHED and provide
+ * reason for reinitialization
+ */
+ sdw_clear_slave_status(bus, SDW_UNATTACH_REQUEST_MASTER_RESET);
+
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "cannot enable interrupts during resume\n");