[PATCH] ASoC: Use of_reserved_mem_region_to_resource() for "memory-region"
From: "Rob Herring (Arm)" <robh@kernel.org>
Date: 2025-07-03 18:35:33
Also in:
chrome-platform, imx, linux-mediatek, linux-sound, lkml
Subsystem:
chromeos ec codec driver, sound, sound - soc layer / dynamic audio power management (asoc), sound - sound open firmware (sof) drivers, the rest · Maintainers:
Cheng-Yi Chiang, Tzung-Bi Shih, Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Peter Ujfalusi, Bard Liao, Daniel Baluta, Linus Torvalds
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> --- sound/soc/codecs/cros_ec_codec.c | 30 ++++++++++----------- sound/soc/sof/imx/imx-common.c | 36 +++++--------------------- sound/soc/sof/mediatek/mt8186/mt8186.c | 11 +------- sound/soc/sof/mediatek/mt8195/mt8195.c | 11 +------- 4 files changed, 22 insertions(+), 66 deletions(-)
diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
index 571222ec520c..937c8cec682a 100644
--- a/sound/soc/codecs/cros_ec_codec.c
+++ b/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
diff --git a/sound/soc/sof/imx/imx-common.c b/sound/soc/sof/imx/imx-common.c
index 62bf707aa909..f00b381cec3b 100644
--- a/sound/soc/sof/imx/imx-common.c
+++ b/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,
diff --git a/sound/soc/sof/mediatek/mt8186/mt8186.c b/sound/soc/sof/mediatek/mt8186/mt8186.c
index 7ff080452cbe..c1bea967737d 100644
--- a/sound/soc/sof/mediatek/mt8186/mt8186.c
+++ b/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;
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195.c b/sound/soc/sof/mediatek/mt8195/mt8195.c
index 3b3582d74510..4d6e9300a9c0 100644
--- a/sound/soc/sof/mediatek/mt8195/mt8195.c
+++ b/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;
--
2.47.2