From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
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@linux.intel.com Signed-off-by: Rander Wang rander.wang@intel.com Signed-off-by: Bard Liao yung-chuan.liao@linux.intel.com --- 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);