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Message-ID: <20250703183451.2074066-1-robh@kernel.org>
Date: Thu, 3 Jul 2025 13:34:50 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Ming Qian <ming.qian@....com>,
Zhou Peng <eagle.zhou@....com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Vikash Garodia <quic_vgarodia@...cinc.com>,
Dikshita Agarwal <quic_dikshita@...cinc.com>,
Abhinav Kumar <abhinav.kumar@...ux.dev>,
"Bryan O'Donoghue" <bryan.odonoghue@...aro.org>
Cc: linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: [PATCH] media: 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@...nel.org>
---
drivers/media/platform/amphion/vpu_core.c | 40 +++++--------------
.../media/platform/qcom/iris/iris_firmware.c | 18 +++------
drivers/media/platform/qcom/venus/firmware.c | 19 +++------
3 files changed, 21 insertions(+), 56 deletions(-)
diff --git a/drivers/media/platform/amphion/vpu_core.c b/drivers/media/platform/amphion/vpu_core.c
index da00f5fc0e5d..168f0514851e 100644
--- a/drivers/media/platform/amphion/vpu_core.c
+++ b/drivers/media/platform/amphion/vpu_core.c
@@ -10,7 +10,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_address.h>
+#include <linux/of_reserved_mem.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/types.h>
@@ -542,47 +542,30 @@ const struct vpu_core_resources *vpu_get_resource(struct vpu_inst *inst)
static int vpu_core_parse_dt(struct vpu_core *core, struct device_node *np)
{
- struct device_node *node;
struct resource res;
int ret;
- if (of_count_phandle_with_args(np, "memory-region", NULL) < 2) {
- dev_err(core->dev, "need 2 memory-region for boot and rpc\n");
- return -ENODEV;
+ ret = of_reserved_mem_region_to_resource(np, 0, &res);
+ if (ret) {
+ dev_err(core->dev, "Cannot get boot-region\n");
+ return ret;
}
- node = of_parse_phandle(np, "memory-region", 0);
- if (!node) {
- dev_err(core->dev, "boot-region of_parse_phandle error\n");
- return -ENODEV;
- }
- if (of_address_to_resource(node, 0, &res)) {
- dev_err(core->dev, "boot-region of_address_to_resource error\n");
- of_node_put(node);
- return -EINVAL;
- }
core->fw.phys = res.start;
core->fw.length = resource_size(&res);
- of_node_put(node);
-
- node = of_parse_phandle(np, "memory-region", 1);
- if (!node) {
- dev_err(core->dev, "rpc-region of_parse_phandle error\n");
- return -ENODEV;
- }
- if (of_address_to_resource(node, 0, &res)) {
- dev_err(core->dev, "rpc-region of_address_to_resource error\n");
- of_node_put(node);
- return -EINVAL;
+ ret = of_reserved_mem_region_to_resource(np, 1, &res);
+ if (ret) {
+ dev_err(core->dev, "Cannot get rpc-region\n");
+ return ret;
}
+
core->rpc.phys = res.start;
core->rpc.length = resource_size(&res);
if (core->rpc.length < core->res->rpc_size + core->res->fwlog_size) {
dev_err(core->dev, "the rpc-region <%pad, 0x%x> is not enough\n",
&core->rpc.phys, core->rpc.length);
- of_node_put(node);
return -EINVAL;
}
@@ -594,7 +577,6 @@ static int vpu_core_parse_dt(struct vpu_core *core, struct device_node *np)
if (ret != VPU_CORE_MEMORY_UNCACHED) {
dev_err(core->dev, "rpc region<%pad, 0x%x> isn't uncached\n",
&core->rpc.phys, core->rpc.length);
- of_node_put(node);
return -EINVAL;
}
@@ -606,8 +588,6 @@ static int vpu_core_parse_dt(struct vpu_core *core, struct device_node *np)
core->act.length = core->rpc.length - core->res->rpc_size - core->log.length;
core->rpc.length = core->res->rpc_size;
- of_node_put(node);
-
return 0;
}
diff --git a/drivers/media/platform/qcom/iris/iris_firmware.c b/drivers/media/platform/qcom/iris/iris_firmware.c
index f1b5cd56db32..40448429ba97 100644
--- a/drivers/media/platform/qcom/iris/iris_firmware.c
+++ b/drivers/media/platform/qcom/iris/iris_firmware.c
@@ -19,8 +19,7 @@ static int iris_load_fw_to_memory(struct iris_core *core, const char *fw_name)
u32 pas_id = core->iris_platform_data->pas_id;
const struct firmware *firmware = NULL;
struct device *dev = core->dev;
- struct reserved_mem *rmem;
- struct device_node *node;
+ struct resource res;
phys_addr_t mem_phys;
size_t res_size;
ssize_t fw_size;
@@ -30,17 +29,12 @@ static int iris_load_fw_to_memory(struct iris_core *core, const char *fw_name)
if (strlen(fw_name) >= MAX_FIRMWARE_NAME_SIZE - 4)
return -EINVAL;
- node = of_parse_phandle(dev->of_node, "memory-region", 0);
- if (!node)
- return -EINVAL;
-
- rmem = of_reserved_mem_lookup(node);
- of_node_put(node);
- if (!rmem)
- return -EINVAL;
+ ret = of_reserved_mem_region_to_resource(dev->of_node, 0, &res);
+ if (ret)
+ return ret;
- mem_phys = rmem->base;
- res_size = rmem->size;
+ mem_phys = res.start;
+ res_size = resource_size(&res);
ret = request_firmware(&firmware, fw_name, dev);
if (ret)
diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c
index 66a18830e66d..37c0fd52333e 100644
--- a/drivers/media/platform/qcom/venus/firmware.c
+++ b/drivers/media/platform/qcom/venus/firmware.c
@@ -9,7 +9,6 @@
#include <linux/iommu.h>
#include <linux/io.h>
#include <linux/of.h>
-#include <linux/of_address.h>
#include <linux/of_reserved_mem.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
@@ -83,8 +82,7 @@ static int venus_load_fw(struct venus_core *core, const char *fwname,
phys_addr_t *mem_phys, size_t *mem_size)
{
const struct firmware *mdt;
- struct reserved_mem *rmem;
- struct device_node *node;
+ struct resource res;
struct device *dev;
ssize_t fw_size;
void *mem_va;
@@ -94,15 +92,8 @@ static int venus_load_fw(struct venus_core *core, const char *fwname,
*mem_size = 0;
dev = core->dev;
- node = of_parse_phandle(dev->of_node, "memory-region", 0);
- if (!node) {
- dev_err(dev, "no memory-region specified\n");
- return -EINVAL;
- }
-
- rmem = of_reserved_mem_lookup(node);
- of_node_put(node);
- if (!rmem) {
+ ret = of_reserved_mem_region_to_resource(dev->of_node, 0, &res);
+ if (ret) {
dev_err(dev, "failed to lookup reserved memory-region\n");
return -EINVAL;
}
@@ -117,8 +108,8 @@ static int venus_load_fw(struct venus_core *core, const char *fwname,
goto err_release_fw;
}
- *mem_phys = rmem->base;
- *mem_size = rmem->size;
+ *mem_phys = res.start;
+ *mem_size = resource_size(&res);
if (*mem_size < fw_size || fw_size > VENUS_FW_MEM_SIZE) {
ret = -EINVAL;
--
2.47.2
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