diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2020-08-17 17:29:22 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-08-18 08:31:05 +0200 |
| commit | 61fb830bf9ca02f040fdfe65b714bea492a44986 (patch) | |
| tree | dacff71e13c30af8bda40fa3d5206f2584a9d164 /drivers/soundwire/intel.c | |
| parent | soundwire: intel_init: handle power rail dependencies for clock stop mode (diff) | |
| download | linux-61fb830bf9ca02f040fdfe65b714bea492a44986.tar.xz linux-61fb830bf9ca02f040fdfe65b714bea492a44986.zip | |
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: 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>
Link: https://lore.kernel.org/r/20200817152923.3259-12-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/soundwire/intel.c | 21 |
1 files changed, 20 insertions, 1 deletions
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); |