ASoC: Use of_reserved_mem_region_to_resource() for "memory-region"

Use the newly added of_reserved_mem_region_to_resource() function to
handle "memory-region" properties.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
Link: https://patch.msgid.link/20250703183523.2075276-1-robh@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: robherring

sound/soc/codecs/cros_ec_codec.c

@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_reserved_mem.h>
 #include <linux/platform_data/cros_ec_commands.h>
 #include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
@@ -961,7 +962,6 @@ static int cros_ec_codec_platform_probe(struct platform_device *pdev)
 	struct ec_response_ec_codec_get_capabilities r;
 	int ret;
 #ifdef CONFIG_OF
-	struct device_node *node;
 	struct resource res;
 	u64 ec_shm_size;
 	const __be32 *regaddr_p;
@@ -981,22 +981,18 @@ static int cros_ec_codec_platform_probe(struct platform_device *pdev)
 			priv->ec_shm_addr, priv->ec_shm_len);
 	}
 
-	node = of_parse_phandle(dev->of_node, "memory-region", 0);
-	if (node) {
-		ret = of_address_to_resource(node, 0, &res);
-		if (!ret) {
-			priv->ap_shm_phys_addr = res.start;
-			priv->ap_shm_len = resource_size(&res);
-			priv->ap_shm_addr =
-				(uint64_t)(uintptr_t)devm_ioremap_wc(
-					dev, priv->ap_shm_phys_addr,
-					priv->ap_shm_len);
-			priv->ap_shm_last_alloc = priv->ap_shm_phys_addr;
-
-			dev_dbg(dev, "ap_shm_phys_addr=%#llx len=%#x\n",
-				priv->ap_shm_phys_addr, priv->ap_shm_len);
-		}
-		of_node_put(node);
+	ret = of_reserved_mem_region_to_resource(dev->of_node, 0, &res);
+	if (!ret) {
+		priv->ap_shm_phys_addr = res.start;
+		priv->ap_shm_len = resource_size(&res);
+		priv->ap_shm_addr =
+			(uint64_t)(uintptr_t)devm_ioremap_wc(
+				dev, priv->ap_shm_phys_addr,
+				priv->ap_shm_len);
+		priv->ap_shm_last_alloc = priv->ap_shm_phys_addr;
+
+		dev_dbg(dev, "ap_shm_phys_addr=%#llx len=%#x\n",
+			priv->ap_shm_phys_addr, priv->ap_shm_len);
 	}
 #endif
 

sound/soc/sof/imx/imx-common.c

@@ -282,11 +282,8 @@ static int imx_region_name_to_blk_type(const char *region_name)
 static int imx_parse_ioremap_memory(struct snd_sof_dev *sdev)
 {
 	const struct imx_chip_info *chip_info;
-	struct reserved_mem *reserved;
 	struct platform_device *pdev;
-	struct device_node *res_np;
-	phys_addr_t base, size;
-	struct resource *res;
+	struct resource *res, _res;
 	int i, blk_type, ret;
 
 	pdev = to_platform_device(sdev->dev);
@@ -307,37 +304,18 @@ static int imx_parse_ioremap_memory(struct snd_sof_dev *sdev)
 						     "failed to fetch %s resource\n",
 						     chip_info->memory[i].name);
 
-			base = res->start;
-			size = resource_size(res);
 		} else {
-			ret = of_property_match_string(pdev->dev.of_node,
-						       "memory-region-names",
-						       chip_info->memory[i].name);
+			ret = of_reserved_mem_region_to_resource_byname(pdev->dev.of_node,
+									chip_info->memory[i].name,
+									&_res);
 			if (ret < 0)
 				return dev_err_probe(sdev->dev, ret,
-						     "no valid index for %s\n",
+						     "no valid entry for %s\n",
 						     chip_info->memory[i].name);
-
-			res_np = of_parse_phandle(pdev->dev.of_node,
-						  "memory-region",
-						  ret);
-			if (!res_np)
-				return dev_err_probe(sdev->dev, -ENODEV,
-						     "failed to parse phandle %s\n",
-						     chip_info->memory[i].name);
-
-			reserved = of_reserved_mem_lookup(res_np);
-			of_node_put(res_np);
-			if (!reserved)
-				return dev_err_probe(sdev->dev, -ENODEV,
-						     "failed to get %s reserved\n",
-						     chip_info->memory[i].name);
-
-			base = reserved->base;
-			size = reserved->size;
+			res = &_res;
 		}
 
-		sdev->bar[blk_type] = devm_ioremap(sdev->dev, base, size);
+		sdev->bar[blk_type] = devm_ioremap_resource(sdev->dev, res);
 		if (!sdev->bar[blk_type])
 			return dev_err_probe(sdev->dev,
 					     -ENOMEM,

sound/soc/sof/mediatek/mt8186/mt8186.c

@@ -12,7 +12,6 @@
 #include <linux/delay.h>
 #include <linux/firmware.h>
 #include <linux/io.h>
-#include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/of_reserved_mem.h>
@@ -46,7 +45,6 @@ static int platform_parse_resource(struct platform_device *pdev, void *data)
 {
 	struct resource *mmio;
 	struct resource res;
-	struct device_node *mem_region;
 	struct device *dev = &pdev->dev;
 	struct mtk_adsp_chip_info *adsp = data;
 	int ret;
@@ -57,14 +55,7 @@ static int platform_parse_resource(struct platform_device *pdev, void *data)
 		return ret;
 	}
 
-	mem_region = of_parse_phandle(dev->of_node, "memory-region", 1);
-	if (!mem_region) {
-		dev_err(dev, "no memory-region sysmem phandle\n");
-		return -ENODEV;
-	}
-
-	ret = of_address_to_resource(mem_region, 0, &res);
-	of_node_put(mem_region);
+	ret = of_reserved_mem_region_to_resource(dev->of_node, 1, &res);
 	if (ret) {
 		dev_err(dev, "of_address_to_resource sysmem failed\n");
 		return ret;

sound/soc/sof/mediatek/mt8195/mt8195.c

@@ -12,7 +12,6 @@
 #include <linux/delay.h>
 #include <linux/firmware.h>
 #include <linux/io.h>
-#include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/of_reserved_mem.h>
@@ -46,7 +45,6 @@ static int platform_parse_resource(struct platform_device *pdev, void *data)
 {
 	struct resource *mmio;
 	struct resource res;
-	struct device_node *mem_region;
 	struct device *dev = &pdev->dev;
 	struct mtk_adsp_chip_info *adsp = data;
 	int ret;
@@ -57,14 +55,7 @@ static int platform_parse_resource(struct platform_device *pdev, void *data)
 		return ret;
 	}
 
-	mem_region = of_parse_phandle(dev->of_node, "memory-region", 1);
-	if (!mem_region) {
-		dev_err(dev, "no memory-region sysmem phandle\n");
-		return -ENODEV;
-	}
-
-	ret = of_address_to_resource(mem_region, 0, &res);
-	of_node_put(mem_region);
+	ret = of_reserved_mem_region_to_resource(dev->of_node, 1, &res);
 	if (ret) {
 		dev_err(dev, "of_address_to_resource sysmem failed\n");
 		return ret;