From 94eed66107ffabdf9c07a922bfcd7e396fe83053 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Tue, 1 Sep 2020 23:05:52 +0800
Subject: [PATCH] soundwire: intel: add multi-link hw_synchronization information
References: jsc#SLE-16518
Patch-mainline: v5.10-rc1
Git-commit: 94eed66107ffabdf9c07a922bfcd7e396fe83053
set the flags as required by hardware implementation
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/20200901150556.19432-7-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/soundwire/intel.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 8634d33c388c..272826973426 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1400,7 +1400,14 @@ int intel_master_startup(struct platform_device *pdev)
dev_dbg(dev, "Multi-link is disabled\n");
bus->multi_link = false;
} else {
+ /*
+ * hardware-based synchronization is required regardless
+ * of the number of segments used by a stream: SSP-based
+ * synchronization is gated by gsync when the multi-master
+ * mode is set.
+ */
bus->multi_link = true;
+ bus->hw_sync_min_links = 1;
}
/* Initialize shim, controller */
--
2.16.4