From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: alsa-devel@alsa-project.org, vkoul@kernel.org
Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org,
tiwai@suse.de, broonie@kernel.org, gregkh@linuxfoundation.org,
jank@cadence.com, srinivas.kandagatla@linaro.org,
rander.wang@linux.intel.com, ranjani.sridharan@linux.intel.com,
hui.wang@canonical.com, pierre-louis.bossart@linux.intel.com,
sanyog.r.kale@intel.com, mengdong.lin@intel.com,
bard.liao@intel.com
Subject: [PATCH v2 04/10] soundwire: intel: add missing support for all clock stop modes
Date: Tue, 1 Sep 2020 23:05:50 +0800 [thread overview]
Message-ID: <20200901150556.19432-5-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20200901150556.19432-1-yung-chuan.liao@linux.intel.com>
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Deal with the BUS_RESET case, which is the default. The only change is
to add support for the exit sequence using the syncArm/syncGo mode for
the exit reset sequence.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
drivers/soundwire/intel.c | 49 +++++++++++++++++++++++++++++++--------
1 file changed, 39 insertions(+), 10 deletions(-)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 259e3da98e42..8634d33c388c 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1868,11 +1868,6 @@ static int intel_resume_runtime(struct device *dev)
if (!clock_stop0) {
- /*
- * Re-initialize the IP since it was powered-off
- */
- sdw_cdns_init(&sdw->cdns);
-
/*
* make sure all Slaves are tagged as UNATTACHED and
* provide reason for reinitialization
@@ -1880,13 +1875,31 @@ static int intel_resume_runtime(struct device *dev)
status = SDW_UNATTACH_REQUEST_MASTER_RESET;
sdw_clear_slave_status(bus, status);
- }
+ ret = sdw_cdns_enable_interrupt(cdns, true);
+ if (ret < 0) {
+ dev_err(dev, "cannot enable interrupts during resume\n");
+ return ret;
+ }
- ret = sdw_cdns_enable_interrupt(cdns, true);
- if (ret < 0) {
- dev_err(dev, "cannot enable interrupts during resume\n");
- return ret;
+ /*
+ * follow recommended programming flows to avoid
+ * timeouts when gsync is enabled
+ */
+ if (multi_link)
+ intel_shim_sync_arm(sdw);
+
+ /*
+ * Re-initialize the IP since it was powered-off
+ */
+ sdw_cdns_init(&sdw->cdns);
+
+ } else {
+ 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, !clock_stop0);
@@ -1894,6 +1907,22 @@ static int intel_resume_runtime(struct device *dev)
dev_err(dev, "unable to restart clock during resume\n");
return ret;
}
+
+ if (!clock_stop0) {
+ ret = sdw_cdns_exit_reset(cdns);
+ if (ret < 0) {
+ dev_err(dev, "unable to exit bus reset sequence during resume\n");
+ return ret;
+ }
+
+ if (multi_link) {
+ ret = intel_shim_sync_go(sdw);
+ if (ret < 0) {
+ dev_err(sdw->cdns.dev, "sync go failed during resume\n");
+ return ret;
+ }
+ }
+ }
} else if (!clock_stop_quirks) {
ret = intel_init(sdw);
if (ret) {
--
2.17.1
next prev parent reply other threads:[~2020-09-02 3:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 15:05 [PATCH v2 00/10] soundwire: intel: add multi-link support Bard Liao
2020-09-01 15:05 ` [PATCH v2 01/10] soundwire: intel: disable shim wake on suspend Bard Liao
2020-09-01 15:05 ` [PATCH v2 02/10] soundwire: intel: ignore software command retries Bard Liao
2020-09-01 15:05 ` [PATCH v2 03/10] soundwire: intel: add multi-link support Bard Liao
2020-09-01 15:05 ` Bard Liao [this message]
2020-09-01 15:05 ` [PATCH v2 05/10] soundwire: bus: update multi-link definition with hw sync details Bard Liao
2020-09-01 15:05 ` [PATCH v2 06/10] soundwire: intel: add multi-link hw_synchronization information Bard Liao
2020-09-01 15:05 ` [PATCH v2 07/10] soundwire: stream: enable hw_sync as needed by hardware Bard Liao
2020-09-01 15:05 ` [PATCH v2 08/10] soundwire: intel: add error log for clock-stop invalid configs Bard Liao
2020-09-01 15:05 ` [PATCH v2 09/10] soundwire: intel: pass link_mask information to each master Bard Liao
2020-09-01 15:05 ` [PATCH v2 10/10] soundwire: intel: don't manage link power individually Bard Liao
2020-09-03 10:44 ` [PATCH v2 00/10] soundwire: intel: add multi-link support Vinod Koul
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