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Message-Id: <20241104032358.669705-4-yung-chuan.liao@linux.intel.com>
Date: Mon, 4 Nov 2024 03:23:49 +0000
From: Bard Liao <yung-chuan.liao@...ux.intel.com>
To: linux-sound@...r.kernel.org,
vkoul@...nel.org
Cc: vinod.koul@...aro.org,
linux-kernel@...r.kernel.org,
pierre-louis.bossart@...ux.dev,
bard.liao@...el.com
Subject: [PATCH 03/12] soundwire: add lane_used_bandwidth in struct sdw_bus
To support multi-lane, we need to know how much bandwidth
is used on each lane. And to use the lane that has enough
bandwidth.
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@...ux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.dev>
---
include/linux/soundwire/sdw.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 928d56cd7e6d..e059d5330b11 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -889,6 +889,7 @@ struct sdw_master_ops {
* @multi_link: Store bus property that indicates if multi links
* are supported. This flag is populated by drivers after reading
* appropriate firmware (ACPI/DT).
+ * @lane_used_bandwidth: how much bandwidth in bits per second is used by each lane
*/
struct sdw_bus {
struct device *dev;
@@ -920,6 +921,7 @@ struct sdw_bus {
struct dentry *debugfs;
#endif
bool multi_link;
+ unsigned int lane_used_bandwidth[SDW_MAX_LANES];
};
int sdw_bus_master_add(struct sdw_bus *bus, struct device *parent,
--
2.34.1
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