Re: [PATCH 07/10] thermal: exynos: simplify temp_to_code() and code_to_temp()

Amit Kachhap
2014-05-19T05:54:28Z

On 5/5/14, Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> wrote:
> * Remove dead temp check from temp_to_code() (this function users
> in exynos_tmu_initialize() always pass correct temperatures and
> exynos_tmu_set_emulation() returns early for EXYNOS4210 because
> TMU_SUPPORT_EMULATION flag is not set on this SoC).
>
> * Move temp_code check from code_to_temp() to exynos_tmu_read()
> (code_to_temp() only user).
>
> There should be no functional changes caused by this patch.
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Changes looks fine.
Reviewed-by: Amit Daniel Kachhap<amit.daniel@samsung.com>

> ---
> drivers/thermal/samsung/exynos_tmu.c | 38
> +++++++++++-------------------------
> 1 file changed, 11 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/thermal/samsung/exynos_tmu.c
> b/drivers/thermal/samsung/exynos_tmu.c
> index a415829..20379eb 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -71,19 +71,7 @@ struct exynos_tmu_data {
> */
> static int temp_to_code(struct exynos_tmu_data *data, u8 temp)
> {
> - struct exynos_tmu_platform_data *pdata = data->pdata;
> - int temp_code;
> -
> - if (data->soc == SOC_ARCH_EXYNOS4210)
> - /* temp should range between 25 and 125 */
> - if (temp < 25 || temp > 125) {
> - temp_code = -EINVAL;
> - goto out;
> - }
> -
> - temp_code = temp + data->temp_error - pdata->first_point_trim;
> -out:
> - return temp_code;
> + return temp + data->temp_error - data->pdata->first_point_trim;
> }
>
> /*
> @@ -92,19 +80,7 @@ out:
> */
> static int code_to_temp(struct exynos_tmu_data *data, u8 temp_code)
> {
> - struct exynos_tmu_platform_data *pdata = data->pdata;
> - int temp;
> -
> - if (data->soc == SOC_ARCH_EXYNOS4210)
> - /* temp_code should range between 75 and 175 */
> - if (temp_code < 75 || temp_code > 175) {
> - temp = -ENODATA;
> - goto out;
> - }
> -
> - temp = temp_code - data->temp_error + pdata->first_point_trim;
> -out:
> - return temp;
> + return temp_code - data->temp_error + data->pdata->first_point_trim;
> }
>
> static int exynos_tmu_initialize(struct platform_device *pdev)
> @@ -297,8 +273,16 @@ static int exynos_tmu_read(struct exynos_tmu_data
> *data)
> clk_enable(data->clk);
>
> temp_code = readb(data->base + reg->tmu_cur_temp);
> - temp = code_to_temp(data, temp_code);
>
> + if (data->soc == SOC_ARCH_EXYNOS4210)
> + /* temp_code should range between 75 and 175 */
> + if (temp_code < 75 || temp_code > 175) {
> + temp = -ENODATA;
> + goto out;
> + }
> +
> + temp = code_to_temp(data, temp_code);
> +out:
> clk_disable(data->clk);
> mutex_unlock(&data->lock);
>
> --
> 1.8.2.3
>
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