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Date: Mon, 18 Nov 2013 08:54:08 +0530
From: Naveen Krishna Ch <naveenkrishna.ch@...il.com>
To: Naveen Krishna Chatradhi <ch.naveen@...sung.com>
Cc: linux-pm@...r.kernel.org, rui.zhang@...el.com,
eduardo.valentin@...com,
"linux-samsung-soc@...r.kernel.org"
<linux-samsung-soc@...r.kernel.org>, linux-kernel@...r.kernel.org,
amit.daniel@...sung.com, Kukjin Kim <kgene.kim@...sung.com>,
devicetree@...r.kernel.org, b.zolnierkie@...sung.com,
cpgs@...sung.com, t.figa@...sung.com
Subject: Re: [PATCH 2/4 v9] thermal: samsung: change base_common to more
meaningful base_second
Hello All,
On 12 November 2013 12:06, Naveen Krishna Chatradhi
<ch.naveen@...sung.com> wrote:
> On Exynos5440 and Exynos5420 there are registers common
> across the TMU channels.
>
> To support that, we introduced a ADDRESS_MULTIPLE flag in the
> driver and the 2nd set of register base and size are provided
> in the "reg" property of the node.
>
> As per Amit's suggestion, this patch changes the base_common
> to base_second and SHARED_MEMORY to ADDRESS_MULTIPLE.
>
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@...sung.com>
> ---
> Changes since v8:
> None
> .../devicetree/bindings/thermal/exynos-thermal.txt | 4 ++--
> drivers/thermal/samsung/exynos_tmu.c | 14 +++++++-------
> drivers/thermal/samsung/exynos_tmu.h | 4 ++--
> drivers/thermal/samsung/exynos_tmu_data.c | 2 +-
> 4 files changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
> index 284f530..116cca0 100644
> --- a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
> @@ -11,8 +11,8 @@
> - 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.
> + belongs to each instance of TMU and second set belongs to second set
> + of 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 c493245..bbd0fc3 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -41,7 +41,7 @@
> * @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.
> + * @base_second: 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.
> @@ -56,7 +56,7 @@ struct exynos_tmu_data {
> int id;
> struct exynos_tmu_platform_data *pdata;
> void __iomem *base;
> - void __iomem *base_common;
> + void __iomem *base_second;
> int irq;
> enum soc_type soc;
> struct work_struct irq_work;
> @@ -297,7 +297,7 @@ skip_calib_data:
> }
> /*Clear the PMIN in the common TMU register*/
> if (reg->tmu_pmin && !data->id)
> - writel(0, data->base_common + reg->tmu_pmin);
> + writel(0, data->base_second + reg->tmu_pmin);
> out:
> clk_disable(data->clk);
> mutex_unlock(&data->lock);
> @@ -454,7 +454,7 @@ static void exynos_tmu_work(struct work_struct *work)
>
> /* Find which sensor generated this interrupt */
> if (reg->tmu_irqstatus) {
> - val_type = readl(data->base_common + reg->tmu_irqstatus);
> + val_type = readl(data->base_second + reg->tmu_irqstatus);
> if (!((val_type >> data->id) & 0x1))
> goto out;
> }
> @@ -579,7 +579,7 @@ static int exynos_map_dt_data(struct platform_device *pdev)
> * Check if the TMU shares some registers and then try to map the
> * memory of common registers.
> */
> - if (!TMU_SUPPORTS(pdata, SHARED_MEMORY))
> + if (!TMU_SUPPORTS(pdata, ADDRESS_MULTIPLE))
> return 0;
>
> if (of_address_to_resource(pdev->dev.of_node, 1, &res)) {
> @@ -587,9 +587,9 @@ static int exynos_map_dt_data(struct platform_device *pdev)
> return -ENODEV;
> }
>
> - data->base_common = devm_ioremap(&pdev->dev, res.start,
> + data->base_second = devm_ioremap(&pdev->dev, res.start,
> resource_size(&res));
> - if (!data->base_common) {
> + if (!data->base_second) {
> dev_err(&pdev->dev, "Failed to ioremap memory\n");
> return -ENOMEM;
> }
> diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h
> index 980859a..0d6b32f 100644
> --- a/drivers/thermal/samsung/exynos_tmu.h
> +++ b/drivers/thermal/samsung/exynos_tmu.h
> @@ -60,7 +60,7 @@ enum soc_type {
> * state(active/idle) can be checked.
> * TMU_SUPPORT_EMUL_TIME - This features allows to set next temp emulation
> * sample time.
> - * TMU_SUPPORT_SHARED_MEMORY - This feature tells that the different TMU
> + * TMU_SUPPORT_ADDRESS_MULTIPLE - This feature tells that the different TMU
> * sensors shares some common registers.
> * TMU_SUPPORT - macro to compare the above features with the supplied.
> */
> @@ -70,7 +70,7 @@ enum soc_type {
> #define TMU_SUPPORT_FALLING_TRIP BIT(3)
> #define TMU_SUPPORT_READY_STATUS BIT(4)
> #define TMU_SUPPORT_EMUL_TIME BIT(5)
> -#define TMU_SUPPORT_SHARED_MEMORY BIT(6)
> +#define TMU_SUPPORT_ADDRESS_MULTIPLE BIT(6)
>
> #define TMU_SUPPORTS(a, b) (a->features & TMU_SUPPORT_ ## b)
>
> diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c
> index 7cdb04e..1d27069 100644
> --- a/drivers/thermal/samsung/exynos_tmu_data.c
> +++ b/drivers/thermal/samsung/exynos_tmu_data.c
> @@ -255,7 +255,7 @@ static const struct exynos_tmu_registers exynos5440_tmu_registers = {
> .type = SOC_ARCH_EXYNOS5440, \
> .registers = &exynos5440_tmu_registers, \
> .features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_FALLING_TRIP | \
> - TMU_SUPPORT_MULTI_INST | TMU_SUPPORT_SHARED_MEMORY),
> + TMU_SUPPORT_MULTI_INST | TMU_SUPPORT_ADDRESS_MULTIPLE),
>
> struct exynos_tmu_init_data const exynos5440_default_tmu_data = {
> .tmu_data = {
> --
> 1.7.10.4
Any comments on this patch
>
--
Shine bright,
(: Nav :)
--
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