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-rw-r--r--arch/arm/boot/dts/qcom-msm8974.dtsi17
-rw-r--r--drivers/soc/qcom/smem.c73
2 files changed, 41 insertions, 49 deletions
diff --git a/arch/arm/boot/dts/qcom-msm8974.dtsi b/arch/arm/boot/dts/qcom-msm8974.dtsi
index ab8e57250468..93e315053bdd 100644
--- a/arch/arm/boot/dts/qcom-msm8974.dtsi
+++ b/arch/arm/boot/dts/qcom-msm8974.dtsi
@@ -100,6 +100,15 @@
clock-frequency = <19200000>;
};
+ smem {
+ compatible = "qcom,smem";
+
+ memory-region = <&smem_region>;
+ qcom,rpm-msg-ram = <&rpm_msg_ram>;
+
+ hwlocks = <&tcsr_mutex 3>;
+ };
+
soc: soc {
#address-cells = <1>;
#size-cells = <1>;
@@ -250,13 +259,9 @@
#hwlock-cells = <1>;
};
- smem@fa00000 {
- compatible = "qcom,smem";
-
- memory-region = <&smem_region>;
+ rpm_msg_ram: memory@fc428000 {
+ compatible = "qcom,rpm-msg-ram";
reg = <0xfc428000 0x4000>;
-
- hwlocks = <&tcsr_mutex 3>;
};
blsp1_uart2: serial@f991e000 {
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
index 74017114ce6e..19019aa092e8 100644
--- a/drivers/soc/qcom/smem.c
+++ b/drivers/soc/qcom/smem.c
@@ -664,37 +664,47 @@ static int qcom_smem_enumerate_partitions(struct qcom_smem *smem,
return 0;
}
-static int qcom_smem_count_mem_regions(struct platform_device *pdev)
+static int qcom_smem_map_memory(struct qcom_smem *smem, struct device *dev,
+ const char *name, int i)
{
- struct resource *res;
- int num_regions = 0;
- int i;
-
- for (i = 0; i < pdev->num_resources; i++) {
- res = &pdev->resource[i];
+ struct device_node *np;
+ struct resource r;
+ int ret;
- if (resource_type(res) == IORESOURCE_MEM)
- num_regions++;
+ np = of_parse_phandle(dev->of_node, name, 0);
+ if (!np) {
+ dev_err(dev, "No %s specified\n", name);
+ return -EINVAL;
}
- return num_regions;
+ ret = of_address_to_resource(np, 0, &r);
+ of_node_put(np);
+ if (ret)
+ return ret;
+
+ smem->regions[i].aux_base = (u32)r.start;
+ smem->regions[i].size = resource_size(&r);
+ smem->regions[i].virt_base = devm_ioremap_nocache(dev, r.start,
+ resource_size(&r));
+ if (!smem->regions[i].virt_base)
+ return -ENOMEM;
+
+ return 0;
}
static int qcom_smem_probe(struct platform_device *pdev)
{
struct smem_header *header;
- struct device_node *np;
struct qcom_smem *smem;
- struct resource *res;
- struct resource r;
size_t array_size;
- int num_regions = 0;
+ int num_regions;
int hwlock_id;
u32 version;
int ret;
- int i;
- num_regions = qcom_smem_count_mem_regions(pdev) + 1;
+ num_regions = 1;
+ if (of_find_property(pdev->dev.of_node, "qcom,rpm-msg-ram", NULL))
+ num_regions++;
array_size = num_regions * sizeof(struct smem_region);
smem = devm_kzalloc(&pdev->dev, sizeof(*smem) + array_size, GFP_KERNEL);
@@ -704,36 +714,13 @@ static int qcom_smem_probe(struct platform_device *pdev)
smem->dev = &pdev->dev;
smem->num_regions = num_regions;
- np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
- if (!np) {
- dev_err(&pdev->dev, "No memory-region specified\n");
- return -EINVAL;
- }
-
- ret = of_address_to_resource(np, 0, &r);
- of_node_put(np);
+ ret = qcom_smem_map_memory(smem, &pdev->dev, "memory-region", 0);
if (ret)
return ret;
- smem->regions[0].aux_base = (u32)r.start;
- smem->regions[0].size = resource_size(&r);
- smem->regions[0].virt_base = devm_ioremap_nocache(&pdev->dev,
- r.start,
- resource_size(&r));
- if (!smem->regions[0].virt_base)
- return -ENOMEM;
-
- for (i = 1; i < num_regions; i++) {
- res = platform_get_resource(pdev, IORESOURCE_MEM, i - 1);
-
- smem->regions[i].aux_base = (u32)res->start;
- smem->regions[i].size = resource_size(res);
- smem->regions[i].virt_base = devm_ioremap_nocache(&pdev->dev,
- res->start,
- resource_size(res));
- if (!smem->regions[i].virt_base)
- return -ENOMEM;
- }
+ if (num_regions > 1 && (ret = qcom_smem_map_memory(smem, &pdev->dev,
+ "qcom,rpm-msg-ram", 1)))
+ return ret;
header = smem->regions[0].virt_base;
if (le32_to_cpu(header->initialized) != 1 ||