Commit 61fb830b authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Vinod Koul
Browse files

soundwire: intel: support clock_stop mode without quirks 



In this mode, on restart the bus restarts immediately, the Slaves
remain synchronized and all context is kept intact.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: default avatarRander Wang <rander.wang@intel.com>
Signed-off-by: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200817152923.3259-12-yung-chuan.liao@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent ab996b29

drivers/soundwire/intel.c

+20 −1
Original line number Diff line number Diff line
@@ -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);