From d9b6ee148dadd85433803f25cc62024ffcb4a0b8 Mon Sep 17 00:00:00 2001 From: Amit Daniel Kachhap Date: Mon, 24 Jun 2013 16:20:42 +0530 Subject: [PATCH] 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 Acked-by: Kukjin Kim Acked-by: Eduardo Valentin Signed-off-by: Amit Daniel Kachhap Signed-off-by: Eduardo Valentin --- drivers/thermal/samsung/exynos_tmu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) 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; } -- 2.39.5