Re: [PATCH v6 5/6] ARM: exynos: add thermal sensor driver platform data support

Thomas Abraham
2012-08-17T03:55:26Z

On 16 August 2012 17:11, Amit Daniel Kachhap <amit.kachhap@linaro.org> wrote:
> Add necessary default platform data support needed for TMU driver. The
> supplied dt/non-dt values are tested for origen exynos4210 and smdk exynos5250
> platforms and only compile tested for exynos4412.
>
> Signed-off-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
> Cc: SangWook Ju <sw.ju@samsung.com>
> Cc: Durgadoss <durgadoss.r@intel.com>
> Cc: Len Brown <lenb@kernel.org>
> Cc: Jean Delvare <khali@linux-fr.org>
> Cc: jonghwa lee <jonghwa3.lee@samsung.com>
> Cc: Kyungmin Park <kmpark@infradead.org>
> Cc: Kukjin Kim <kgene.kim@samsung.com>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
> ---
> drivers/thermal/exynos_thermal.c | 111 +++++++++++++++++++++++++++++++++++++-
> 1 files changed, 110 insertions(+), 1 deletions(-)

Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org>

Few minor comments inline below.

>
> diff --git a/drivers/thermal/exynos_thermal.c b/drivers/thermal/exynos_thermal.c
> index e79cdc9..03a99e4 100644
> --- a/drivers/thermal/exynos_thermal.c
> +++ b/drivers/thermal/exynos_thermal.c
> @@ -723,14 +723,121 @@ static irqreturn_t exynos_tmu_irq(int irq, void *id)
> static struct thermal_sensor_conf exynos_sensor_conf = {
> .name = "exynos-therm",
> .read_temperature = (int (*)(void *))exynos_tmu_read,
> +};
> +
> +#if defined(CONFIG_CPU_EXYNOS4210)
> +static struct exynos_tmu_platform_data const exynos4210_default_tmu_data = {
> + .threshold = 80,
> + .trigger_levels[0] = 5,
> + .trigger_levels[1] = 20,
> + .trigger_levels[2] = 30,
> + .trigger_level0_en = 1,
> + .trigger_level1_en = 1,
> + .trigger_level2_en = 1,
> + .trigger_level3_en = 0,
> + .gain = 15,
> + .reference_voltage = 7,
> + .cal_type = TYPE_ONE_POINT_TRIMMING,
> + .freq_tab[0] = {
> + .freq_clip_max = 800 * 1000,
> + .temp_level = 85,
> + },
> + .freq_tab[1] = {
> + .freq_clip_max = 200 * 1000,
> + .temp_level = 100,
> + },
> + .freq_tab_count = 2,
> + .type = SOC_ARCH_EXYNOS4210,
> +};
> +#define EXYNOS4210_TMU_DRV_DATA (&exynos4210_default_tmu_data)
> +#else
> +#define EXYNOS4210_TMU_DRV_DATA (NULL)
> +#endif
> +
> +#if defined(CONFIG_SOC_EXYNOS5250) || defined(CONFIG_SOC_EXYNOS4412)
> +static struct exynos_tmu_platform_data const exynos_default_tmu_data = {
> + .trigger_levels[0] = 85,
> + .trigger_levels[1] = 103,
> + .trigger_levels[2] = 110,
> + .trigger_level0_en = 1,
> + .trigger_level1_en = 1,
> + .trigger_level2_en = 1,
> + .trigger_level3_en = 0,
> + .gain = 8,
> + .reference_voltage = 16,
> + .noise_cancel_mode = 4,
> + .cal_type = TYPE_ONE_POINT_TRIMMING,
> + .efuse_value = 55,
> + .freq_tab[0] = {
> + .freq_clip_max = 800 * 1000,
> + .temp_level = 85,
> + },
> + .freq_tab[1] = {
> + .freq_clip_max = 200 * 1000,
> + .temp_level = 103,
> + },
> + .freq_tab_count = 2,
> + .type = SOC_ARCH_EXYNOS,
> +};
> +#define EXYNOS_TMU_DRV_DATA (&exynos_default_tmu_data)
> +#else
> +#define EXYNOS_TMU_DRV_DATA (NULL)
> +#endif
> +
> +#ifdef CONFIG_OF
> +static const struct of_device_id exynos_tmu_match[] = {
> + {
> + .compatible = "samsung,exynos4210-tmu",
> + .data = (void *)EXYNOS4210_TMU_DRV_DATA,
> + },
> + {

This can be }, {

> + .compatible = "samsung,exynos5250-tmu",
> + .data = (void *)EXYNOS_TMU_DRV_DATA,
> + },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, exynos_tmu_match);
> +#else
> +#define exynos_tmu_match NULL
> +#endif
> +
> +static struct platform_device_id exynos_tmu_driver_ids[] = {
> + {
> + .name = "exynos4210-tmu",
> + .driver_data = (kernel_ulong_t)EXYNOS4210_TMU_DRV_DATA,
> + },
> + {
> + .name = "exynos5250-tmu",
> + .driver_data = (kernel_ulong_t)EXYNOS_TMU_DRV_DATA,
> + },

Since Exynos5250 platforms are dt based, the above entry could be left out.

> + { },
> +};
> +MODULE_DEVICE_TABLE(platform, exynos4_tmu_driver_ids);
> +
> +static inline struct exynos_tmu_platform_data *exynos_get_driver_data(
> + struct platform_device *pdev)
> +{
> +#ifdef CONFIG_OF
> + if (pdev->dev.of_node) {
> + const struct of_device_id *match;
> + match = of_match_node(exynos_tmu_match, pdev->dev.of_node);
> + if (!match)
> + return NULL;
> + return (struct exynos_tmu_platform_data *) match->data;
> + }
> +#endif
> + return (struct exynos_tmu_platform_data *)
> + platform_get_device_id(pdev)->driver_data;
> }
> -;
> static int __devinit exynos_tmu_probe(struct platform_device *pdev)
> {
> struct exynos_tmu_data *data;
> struct exynos_tmu_platform_data *pdata = pdev->dev.platform_data;
> int ret, i;
>
> + if (!pdata)
> + pdata = exynos_get_driver_data(pdev);
> +
> if (!pdata) {
> dev_err(&pdev->dev, "No platform init data supplied.\n");
> return -ENODEV;
> @@ -899,9 +1006,11 @@ static struct platform_driver exynos_tmu_driver = {
> .name = "exynos-tmu",
> .owner = THIS_MODULE,
> .pm = EXYNOS_TMU_PM,
> + .of_match_table = exynos_tmu_match,
> },
> .probe = exynos_tmu_probe,
> .remove = __devexit_p(exynos_tmu_remove),
> + .id_table = exynos_tmu_driver_ids,
> };
>
> module_platform_driver(exynos_tmu_driver);
> --
> 1.7.1
>
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