From: Pierre-Louis Bossart <[email protected]> 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 <[email protected]> Signed-off-by: Bard Liao <[email protected]> --- drivers/soundwire/intel.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index b7d8ea6b331e..758387e345da 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1519,6 +1519,12 @@ 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"); @@ -1565,6 +1571,12 @@ 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"); -- 2.17.1
