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    Subject[PATCH v1 09/11] leds: aw200xx: improve autodim calculation method
    Date
    From: George Stark <gnstark@salutedevices.com>

    use DIV_ROUND_UP instead of coarse div

    Signed-off-by: George Stark <gnstark@salutedevices.com>
    Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
    ---
    drivers/leds/leds-aw200xx.c | 6 +++---
    1 file changed, 3 insertions(+), 3 deletions(-)

    diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c
    index 5a1a93ffe36c..09b8bc6724c7 100644
    --- a/drivers/leds/leds-aw200xx.c
    +++ b/drivers/leds/leds-aw200xx.c
    @@ -87,6 +87,8 @@
    #define AW200XX_REG_DIM(x, columns) \
    AW200XX_REG(AW200XX_PAGE4, AW200XX_LED2REG(x, columns) * 2)
    #define AW200XX_REG_DIM2FADE(x) ((x) + 1)
    +#define AW200XX_REG_FADE2DIM(fade) \
    + DIV_ROUND_UP((fade) * AW200XX_DIM_MAX, AW200XX_FADE_MAX)

    /*
    * Duty ratio of display scan (see p.15 of datasheet for formula):
    @@ -195,9 +197,7 @@ static int aw200xx_brightness_set(struct led_classdev *cdev,

    dim = led->dim;
    if (dim < 0)
    - dim = max_t(int,
    - brightness / (AW200XX_FADE_MAX / AW200XX_DIM_MAX),
    - 1);
    + dim = AW200XX_REG_FADE2DIM(brightness);

    ret = regmap_write(chip->regmap, reg, dim);
    if (ret)
    --
    2.36.0
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