On Thu, Apr 26, 2018 at 01:51:31PM +0200, Bartlomiej Zolnierkiewicz wrote:
> Cleanup code for enabling threshold interrupts in ->tmu_control
> method implementations.
> 
> There should be no functional changes caused by this patch.
> 
> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
> ---
>  drivers/thermal/samsung/exynos_tmu.c | 101 
> ++++++++++++-----------------------
>  1 file changed, 34 insertions(+), 67 deletions(-)
> 
> diff --git a/drivers/thermal/samsung/exynos_tmu.c 
> b/drivers/thermal/samsung/exynos_tmu.c
> index abe0737..9639acf 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -76,9 +76,6 @@
>  #define EXYNOS_TMU_THERM_TRIP_EN_SHIFT       12
>  
>  #define EXYNOS_TMU_INTEN_RISE0_SHIFT 0
> -#define EXYNOS_TMU_INTEN_RISE1_SHIFT 4
> -#define EXYNOS_TMU_INTEN_RISE2_SHIFT 8
> -#define EXYNOS_TMU_INTEN_RISE3_SHIFT 12
>  #define EXYNOS_TMU_INTEN_FALL0_SHIFT 16
>  
>  #define EXYNOS_EMUL_TIME     0x57F0
> @@ -136,13 +133,6 @@
>  #define EXYNOS7_TMU_TEMP_MASK                        0x1ff
>  #define EXYNOS7_PD_DET_EN_SHIFT                      23
>  #define EXYNOS7_TMU_INTEN_RISE0_SHIFT                0
> -#define EXYNOS7_TMU_INTEN_RISE1_SHIFT                1
> -#define EXYNOS7_TMU_INTEN_RISE2_SHIFT                2
> -#define EXYNOS7_TMU_INTEN_RISE3_SHIFT                3
> -#define EXYNOS7_TMU_INTEN_RISE4_SHIFT                4
> -#define EXYNOS7_TMU_INTEN_RISE5_SHIFT                5
> -#define EXYNOS7_TMU_INTEN_RISE6_SHIFT                6
> -#define EXYNOS7_TMU_INTEN_RISE7_SHIFT                7
>  #define EXYNOS7_EMUL_DATA_SHIFT                      7
>  #define EXYNOS7_EMUL_DATA_MASK                       0x1ff
>  
> @@ -615,29 +605,27 @@ static void exynos4210_tmu_control(struct 
> platform_device *pdev, bool on)
>  {
>       struct exynos_tmu_data *data = platform_get_drvdata(pdev);
>       struct thermal_zone_device *tz = data->tzd;
> -     unsigned int con, interrupt_en;
> +     unsigned int con, interrupt_en = 0, i;
>  
>       con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
>  
>       if (on) {
> -             con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
> -             interrupt_en =
> -                     (of_thermal_is_trip_valid(tz, 3)
> -                      << EXYNOS_TMU_INTEN_RISE3_SHIFT) |
> -                     (of_thermal_is_trip_valid(tz, 2)
> -                      << EXYNOS_TMU_INTEN_RISE2_SHIFT) |
> -                     (of_thermal_is_trip_valid(tz, 1)
> -                      << EXYNOS_TMU_INTEN_RISE1_SHIFT) |
> -                     (of_thermal_is_trip_valid(tz, 0)
> -                      << EXYNOS_TMU_INTEN_RISE0_SHIFT);
> +             for (i = 0; i < data->ntrip; i++) {
> +                     if (!of_thermal_is_trip_valid(tz, i))
> +                             continue;
> +
> +                     interrupt_en |=
> +                             (1 << (EXYNOS_TMU_INTEN_RISE0_SHIFT + i * 4));
> +             }

As EXYNOS_TMU_INTEN_RISE0_SHIFT is equal to zero, may be you can replace this
by BITS(i * 4) ?

Same comments for exynos5433 and exynos7 below.

I don't know which one was intended : 
 ((EXYNOS_TMU_INTEN_RISE0_SHIFT + i) * 4) or
  (EXYNOS_TMU_INTEN_RISE0_SHIFT + (i * 4))

but if it is the former it is lucky it works because the macro is zero.

Is it possible to have the registers layout, that would facilitate the review.


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