linux-kernel - [PATCH v2 10/14] soundwire: mipi_disco: add support for clock-scales property

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Message-ID: <20240911115827.233171-11-yung-chuan.liao@linux.intel.com>
Date: Wed, 11 Sep 2024 19:58:23 +0800
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.intel.com,
	bard.liao@...el.com
Subject: [PATCH v2 10/14] soundwire: mipi_disco: add support for clock-scales property

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

The DisCo for SoundWire 2.0 spec adds support for the
'mipi-sdw-supported-clock-scales' property, which is just a
rename. Add in a backwards-compatible manner.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/mipi_disco.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/soundwire/mipi_disco.c b/drivers/soundwire/mipi_disco.c
index 99253f4c9a38..5f42d23bbc85 100644
--- a/drivers/soundwire/mipi_disco.c
+++ b/drivers/soundwire/mipi_disco.c
@@ -51,6 +51,7 @@ int sdw_master_read_prop(struct sdw_bus *bus)
 {
 	struct sdw_master_prop *prop = &bus->prop;
 	struct fwnode_handle *link;
+	const char *scales_prop;
 	char name[32];
 	int nval;
 	int ret;
@@ -112,7 +113,12 @@ int sdw_master_read_prop(struct sdw_bus *bus)
 		}
 	}
 
-	nval = fwnode_property_count_u32(link, "mipi-sdw-supported-clock-gears");
+	scales_prop = "mipi-sdw-supported-clock-scales";
+	nval = fwnode_property_count_u32(link, scales_prop);
+	if (nval == 0) {
+		scales_prop = "mipi-sdw-supported-clock-gears";
+		nval = fwnode_property_count_u32(link, scales_prop);
+	}
 	if (nval > 0) {
 		prop->num_clk_gears = nval;
 		prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,
@@ -124,7 +130,7 @@ int sdw_master_read_prop(struct sdw_bus *bus)
 		}
 
 		ret = fwnode_property_read_u32_array(link,
-					       "mipi-sdw-supported-clock-gears",
+					       scales_prop,
 					       prop->clk_gears,
 					       prop->num_clk_gears);
 		if (ret < 0)
-- 
2.43.0