From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: alsa-devel@alsa-project.org, vkoul@kernel.org
Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org,
tiwai@suse.de, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com,
hui.wang@canonical.com, broonie@kernel.org,
srinivas.kandagatla@linaro.org, jank@cadence.com,
mengdong.lin@intel.com, slawomir.blauciak@intel.com,
sanyog.r.kale@intel.com, rander.wang@linux.intel.com,
bard.liao@intel.com
Subject: [PATCH 12/13] soundwire: intel: support clock_stop mode without quirks
Date: Wed, 22 Jul 2020 04:37:22 +0800 [thread overview]
Message-ID: <20200721203723.18305-13-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20200721203723.18305-1-yung-chuan.liao@linux.intel.com>
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 c9d8de65cfd6..22b3359855c5 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1596,7 +1596,8 @@ 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");
@@ -1758,6 +1759,24 @@ 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);
--
2.17.1
next prev parent reply other threads:[~2020-07-22 8:39 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-21 20:37 [PATCH 00/13] soundwire: intel: add power management support Bard Liao
2020-07-21 20:37 ` [PATCH 01/13] soundwire: intel: Add basic " Bard Liao
2020-07-21 20:37 ` [PATCH 02/13] soundwire: intel: add pm_runtime support Bard Liao
2020-07-21 20:37 ` [PATCH 03/13] soundwire: intel: reset pm_runtime status during system resume Bard Liao
2020-08-17 11:19 ` Vinod Koul
2020-07-21 20:37 ` [PATCH 04/13] soundwire: intel: fix race condition on " Bard Liao
2020-07-21 20:37 ` [PATCH 05/13] soundwire: intel: call helper to reset Slave states on resume Bard Liao
2020-07-21 20:37 ` [PATCH 06/13] soundwire: intel: reinitialize IP+DSP in .prepare(), but only when resuming Bard Liao
2020-07-21 20:37 ` [PATCH 07/13] soundwire: intel: pm_runtime idle scheduling Bard Liao
2020-07-21 20:37 ` [PATCH 08/13] soundwire: intel: add CLK_STOP_TEARDOWN for pm_runtime suspend Bard Liao
2020-07-21 20:37 ` [PATCH 09/13] soundwire: intel: add CLK_STOP_BUS_RESET support Bard Liao
2020-08-17 11:47 ` Vinod Koul
2020-08-17 14:30 ` Pierre-Louis Bossart
2020-08-18 6:27 ` Vinod Koul
2020-07-21 20:37 ` [PATCH 10/13] soundwire: intel: add CLK_STOP_NOT_ALLOWED support Bard Liao
2020-07-21 20:37 ` [PATCH 11/13] soundwire: intel_init: handle power rail dependencies for clock stop mode Bard Liao
2020-07-21 20:37 ` Bard Liao [this message]
2020-07-21 20:37 ` [PATCH 13/13] soundwire: intel: refine runtime pm for SDW_INTEL_CLK_STOP_BUS_RESET Bard Liao
2020-08-17 12:08 ` [PATCH 00/13] soundwire: intel: add power management support Vinod Koul
2020-08-17 14:46 ` Pierre-Louis Bossart
2020-08-17 16:10 ` Pierre-Louis Bossart
2020-08-18 6:29 ` Vinod Koul
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