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    Subject[PATCH 09/20] leds: mark gpio driver with LED_BRIGHTNESS_FAST flag

    This driver doesn't use sleeping operations in .brightness_set
    method if can_sleep variable is not set. In that case it can be
    marked with LED_BRIGHTNESS_FAST flag.
    That flag allows changing brightness at high rates (over 100Hz).

    CC: Bryan Wu <cooloney@gmail.com>
    CC: Richard Purdie <rpurdie@rpsys.net>
    CC: Jacek Anaszewski <j.anaszewski@samsung.com>
    CC: linux-leds@vger.kernel.org
    CC: linux-kernel@vger.kernel.org

    Signed-off-by: Stas Sergeev <stsp@users.sourceforge.net>
    ---
    drivers/leds/leds-gpio.c | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
    index 3af4f2b..0e1346c 100644
    --- a/drivers/leds/leds-gpio.c
    +++ b/drivers/leds/leds-gpio.c
    @@ -138,6 +138,8 @@ static int create_gpio_led(const struct gpio_led *template,
    led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
    if (!template->retain_state_suspended)
    led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
    + if (!led_dat->can_sleep)
    + led_dat->cdev.flags |= LED_BRIGHTNESS_FAST;

    ret = gpiod_direction_output(led_dat->gpiod, state);
    if (ret < 0)
    --
    1.7.9.5

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