diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2020-09-01 23:05:47 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-09-03 16:14:38 +0530 |
| commit | e4be9facb969b3cbb76ba7cce7dcd64fef463346 (patch) | |
| tree | f8ae6e88298a0f3c4f998ed1842f1b517a2165d4 /drivers/soundwire | |
| parent | 6073755886a463a7a7aecdd0abb32a1d38bdb7e6 (diff) | |
soundwire: intel: disable shim wake on suspend
If we enabled the clock stop mode and suspend, we need to disable the
shim wake. We do so only if the parent is pm_runtime active due to
power rail dependencies.
GitHub issue: https://github.com/thesofproject/linux/issues/1678
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/20200901150556.19432-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/intel.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index ebca8ced59ec..aa8484366c95 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1532,6 +1532,7 @@ static int __maybe_unused intel_suspend(struct device *dev) struct sdw_cdns *cdns = dev_get_drvdata(dev); struct sdw_intel *sdw = cdns_to_intel(cdns); struct sdw_bus *bus = &cdns->bus; + u32 clock_stop_quirks; int ret; if (bus->prop.hw_disabled) { @@ -1543,6 +1544,23 @@ static int __maybe_unused intel_suspend(struct device *dev) if (pm_runtime_suspended(dev)) { dev_dbg(dev, "%s: pm_runtime status: suspended\n", __func__); + clock_stop_quirks = sdw->link_res->clock_stop_quirks; + + if ((clock_stop_quirks & SDW_INTEL_CLK_STOP_BUS_RESET || + !clock_stop_quirks) && + !pm_runtime_suspended(dev->parent)) { + + /* + * if we've enabled clock stop, and the parent + * is still active, disable shim wake. The + * SHIM registers are not accessible if the + * parent is already pm_runtime suspended so + * it's too late to change that configuration + */ + + intel_shim_wake(sdw, false); + } + return 0; } |