Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932457Ab3FQGvQ (ORCPT ); Mon, 17 Jun 2013 02:51:16 -0400 Received: from mail-pd0-f170.google.com ([209.85.192.170]:53144 "EHLO mail-pd0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932132Ab3FQGsq (ORCPT ); Mon, 17 Jun 2013 02:48:46 -0400 From: Amit Daniel Kachhap To: linux-pm@vger.kernel.org, Zhang Rui , Eduardo Valentin Cc: linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, amit.kachhap@gmail.com, Kukjin Kim , jonghwa3.lee@samsung.com Subject: [PATCH V6 22/30] thermal: exynos: Add support to access common register for multistance Date: Mon, 17 Jun 2013 12:16:31 +0530 Message-Id: <1371451599-31035-23-git-send-email-amit.daniel@samsung.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1371451599-31035-1-git-send-email-amit.daniel@samsung.com> References: <1371451599-31035-1-git-send-email-amit.daniel@samsung.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3194 Lines: 82 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 Signed-off-by: Amit Daniel Kachhap --- .../devicetree/bindings/thermal/exynos-thermal.txt | 6 +++++- drivers/thermal/samsung/exynos_tmu.c | 20 ++++++++++++++++++++ 2 files changed, 25 insertions(+), 1 deletions(-) diff --git a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt index 535fd0e..0ea33f7 100644 --- a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt +++ b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt @@ -7,7 +7,11 @@ "samsung,exynos4210-tmu" "samsung,exynos5250-tmu" - interrupt-parent : The phandle for the interrupt controller -- reg : Address range of the thermal registers +- reg : Address range of the thermal registers. For soc's which has multiple + instances of TMU and some registers are shared across all TMU's like + interrupt related then 2 set of register has to supplied. First set + belongs to each instance of TMU and second set belongs to common TMU + registers. - interrupts : Should contain interrupt for thermal system - clocks : The main clock for TMU device - clock-names : Thermal system clock name diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index 877dab8..150a869 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; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/