[PATCH 15/20] soundwire: intel_ace2x: add sync_arm/sync_go helpers

Bard Liao
2023-03-23T05:32:06Z

Same functionality as before, but with the registers moved to the
HDaudio multi-link area.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
drivers/soundwire/intel_ace2x.c | 39 +++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)

diff --git a/drivers/soundwire/intel_ace2x.c b/drivers/soundwire/intel_ace2x.c
index d6d5e6e070f4..20b8806f7de6 100644
--- a/drivers/soundwire/intel_ace2x.c
+++ b/drivers/soundwire/intel_ace2x.c
@@ -116,6 +116,41 @@ static int intel_link_power_down(struct sdw_intel *sdw)
return ret;
}

+static void intel_sync_arm(struct sdw_intel *sdw)
+{
+ unsigned int link_id = sdw->instance;
+
+ mutex_lock(sdw->link_res->shim_lock);
+
+ hdac_bus_eml_sdw_sync_arm_unlocked(sdw->link_res->hbus, link_id);
+
+ mutex_unlock(sdw->link_res->shim_lock);
+}
+
+static int intel_sync_go_unlocked(struct sdw_intel *sdw)
+{
+ int ret;
+
+ ret = hdac_bus_eml_sdw_sync_go_unlocked(sdw->link_res->hbus);
+ if (ret < 0)
+ dev_err(sdw->cdns.dev, "%s: SyncGO clear failed: %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int intel_sync_go(struct sdw_intel *sdw)
+{
+ int ret;
+
+ mutex_lock(sdw->link_res->shim_lock);
+
+ ret = intel_sync_go_unlocked(sdw);
+
+ mutex_unlock(sdw->link_res->shim_lock);
+
+ return ret;
+}
+
/*
* DAI operations
*/
@@ -283,6 +318,10 @@ const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops = {

.link_power_up = intel_link_power_up,
.link_power_down = intel_link_power_down,
+
+ .sync_arm = intel_sync_arm,
+ .sync_go_unlocked = intel_sync_go_unlocked,
+ .sync_go = intel_sync_go,
};
EXPORT_SYMBOL_NS(sdw_intel_lnl_hw_ops, SOUNDWIRE_INTEL);

--
2.25.1