thermal: exynos: Add support to access common register for multistance

This patch adds support to parse one more common set of TMU register. First set of register belongs to each instance of TMU and second set belongs to common TMU registers. Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Eduardo Valentin <eduardo.valentin@ti.com> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>

thermal: exynos: Add support to access common register for multistance
This patch adds support to parse one more common set of TMU register. First set of register belongs to each instance of TMU and second set belongs to common TMU registers. Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Eduardo Valentin <eduardo.valentin@ti.com> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Amit Daniel Kachhap · Eduardo Valentin
1 parent c55930e33e
Showing 1 changed file with 20 additions and 0 deletions Side-by-side Diff
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 @@
 	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 @@
 		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;
 }
...	...	@@ -40,6 +40,7 @@
40	40	* @id: identifier of the one instance of the TMU controller.
41	41	* @pdata: pointer to the tmu platform/configuration data
42	42	* @base: base address of the single instance of the TMU controller.
	43	+ * @base_common: base address of the common registers of the TMU controller.
43	44	* @irq: irq number of the TMU controller.
44	45	* @soc: id of the SOC type.
45	46	* @irq_work: pointer to the irq work structure.
...	...	@@ -53,6 +54,7 @@
53	54	int id;
54	55	struct exynos_tmu_platform_data *pdata;
55	56	void __iomem *base;
	57	+ void __iomem *base_common;
56	58	int irq;
57	59	enum soc_type soc;
58	60	struct work_struct irq_work;
...	...	@@ -478,6 +480,24 @@
478	480	return -ENODEV;
479	481	}
480	482	data->pdata = pdata;
	483	+ /*
	484	+ * Check if the TMU shares some registers and then try to map the
	485	+ * memory of common registers.
	486	+ */
	487	+ if (!TMU_SUPPORTS(pdata, SHARED_MEMORY))
	488	+ return 0;
	489	+
	490	+ if (of_address_to_resource(pdev->dev.of_node, 1, &res)) {
	491	+ dev_err(&pdev->dev, "failed to get Resource 1\n");
	492	+ return -ENODEV;
	493	+ }
	494	+
	495	+ data->base_common = devm_ioremap(&pdev->dev, res.start,
	496	+ resource_size(&res));
	497	+ if (!data->base) {
	498	+ dev_err(&pdev->dev, "Failed to ioremap memory\n");
	499	+ return -ENOMEM;
	500	+ }
481	501
482	502	return 0;
483	503	}