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-rw-r--r--drivers/thermal/samsung/exynos_tmu.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 05b95c6bb95b..31bf373734bb 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -40,6 +40,7 @@
* @id: identifier of the one instance of the TMU controller.
* @pdata: pointer to the tmu platform/configuration data
* @base: base address of the single instance of the TMU controller.
+ * @base_common: base address of the common registers of the TMU controller.
* @irq: irq number of the TMU controller.
* @soc: id of the SOC type.
* @irq_work: pointer to the irq work structure.
@@ -53,6 +54,7 @@ struct exynos_tmu_data {
int id;
struct exynos_tmu_platform_data *pdata;
void __iomem *base;
+ void __iomem *base_common;
int irq;
enum soc_type soc;
struct work_struct irq_work;
@@ -478,6 +480,24 @@ static int exynos_map_dt_data(struct platform_device *pdev)
return -ENODEV;
}
data->pdata = pdata;
+ /*
+ * Check if the TMU shares some registers and then try to map the
+ * memory of common registers.
+ */
+ if (!TMU_SUPPORTS(pdata, SHARED_MEMORY))
+ return 0;
+
+ if (of_address_to_resource(pdev->dev.of_node, 1, &res)) {
+ dev_err(&pdev->dev, "failed to get Resource 1\n");
+ return -ENODEV;
+ }
+
+ data->base_common = devm_ioremap(&pdev->dev, res.start,
+ resource_size(&res));
+ if (!data->base) {
+ dev_err(&pdev->dev, "Failed to ioremap memory\n");
+ return -ENOMEM;
+ }
return 0;
}