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Message-ID: <1331471632.14746.3.camel@ted>
Date: Sun, 11 Mar 2012 13:13:52 +0000
From: Richard Purdie <richard.purdie@...uxfoundation.org>
To: Bryan Wu <bryan.wu@...onical.com>, akpm <akpm@...ux-foundation.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linus.walleij@...aro.org, linux@....linux.org.uk
Subject: Re: [PATCH 1/3] led-class: change back LEDS_CLASS to tristate
instead of bool
On Thu, 2012-03-08 at 17:11 +0800, Bryan Wu wrote:
> After moving some core functions to led-core.c, led-class.c can be built as
> module again.
>
> Signed-off-by: Bryan Wu <bryan.wu@...onical.com>
I'd prefer to have less code being required in led-core.c but this is
better than many of the alternatives. I'm happy to see it becoming
modular again, thanks!
Acked-by: Richard Purdie <richard.purdie@...uxfoundation.org>
> ---
> drivers/leds/Kconfig | 2 +-
> drivers/leds/led-class.c | 70 ----------------------------------------------
> drivers/leds/led-core.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 71 insertions(+), 71 deletions(-)
>
> diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
> index 9ca28fc..3f17f0d 100644
> --- a/drivers/leds/Kconfig
> +++ b/drivers/leds/Kconfig
> @@ -17,7 +17,7 @@ menuconfig NEW_LEDS
> if NEW_LEDS
>
> config LEDS_CLASS
> - bool "LED Class Support"
> + tristate "LED Class Support"
> help
> This option enables the led sysfs class in /sys/class/leds. You'll
> need this to do anything useful with LEDs. If unsure, say N.
> diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
> index 0c8739c..5bff843 100644
> --- a/drivers/leds/led-class.c
> +++ b/drivers/leds/led-class.c
> @@ -110,50 +110,6 @@ static void led_timer_function(unsigned long data)
> mod_timer(&led_cdev->blink_timer, jiffies + msecs_to_jiffies(delay));
> }
>
> -static void led_stop_software_blink(struct led_classdev *led_cdev)
> -{
> - /* deactivate previous settings */
> - del_timer_sync(&led_cdev->blink_timer);
> - led_cdev->blink_delay_on = 0;
> - led_cdev->blink_delay_off = 0;
> -}
> -
> -static void led_set_software_blink(struct led_classdev *led_cdev,
> - unsigned long delay_on,
> - unsigned long delay_off)
> -{
> - int current_brightness;
> -
> - current_brightness = led_get_brightness(led_cdev);
> - if (current_brightness)
> - led_cdev->blink_brightness = current_brightness;
> - if (!led_cdev->blink_brightness)
> - led_cdev->blink_brightness = led_cdev->max_brightness;
> -
> - if (led_get_trigger_data(led_cdev) &&
> - delay_on == led_cdev->blink_delay_on &&
> - delay_off == led_cdev->blink_delay_off)
> - return;
> -
> - led_stop_software_blink(led_cdev);
> -
> - led_cdev->blink_delay_on = delay_on;
> - led_cdev->blink_delay_off = delay_off;
> -
> - /* never on - don't blink */
> - if (!delay_on)
> - return;
> -
> - /* never off - just set to brightness */
> - if (!delay_off) {
> - led_set_brightness(led_cdev, led_cdev->blink_brightness);
> - return;
> - }
> -
> - mod_timer(&led_cdev->blink_timer, jiffies + 1);
> -}
> -
> -
> /**
> * led_classdev_suspend - suspend an led_classdev.
> * @led_cdev: the led_classdev to suspend.
> @@ -262,32 +218,6 @@ void led_classdev_unregister(struct led_classdev *led_cdev)
> }
> EXPORT_SYMBOL_GPL(led_classdev_unregister);
>
> -void led_blink_set(struct led_classdev *led_cdev,
> - unsigned long *delay_on,
> - unsigned long *delay_off)
> -{
> - del_timer_sync(&led_cdev->blink_timer);
> -
> - if (led_cdev->blink_set &&
> - !led_cdev->blink_set(led_cdev, delay_on, delay_off))
> - return;
> -
> - /* blink with 1 Hz as default if nothing specified */
> - if (!*delay_on && !*delay_off)
> - *delay_on = *delay_off = 500;
> -
> - led_set_software_blink(led_cdev, *delay_on, *delay_off);
> -}
> -EXPORT_SYMBOL(led_blink_set);
> -
> -void led_brightness_set(struct led_classdev *led_cdev,
> - enum led_brightness brightness)
> -{
> - led_stop_software_blink(led_cdev);
> - led_cdev->brightness_set(led_cdev, brightness);
> -}
> -EXPORT_SYMBOL(led_brightness_set);
> -
> static int __init leds_init(void)
> {
> leds_class = class_create(THIS_MODULE, "leds");
> diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
> index 016d19f..d686004 100644
> --- a/drivers/leds/led-core.c
> +++ b/drivers/leds/led-core.c
> @@ -23,3 +23,73 @@ EXPORT_SYMBOL_GPL(leds_list_lock);
>
> LIST_HEAD(leds_list);
> EXPORT_SYMBOL_GPL(leds_list);
> +
> +static void led_stop_software_blink(struct led_classdev *led_cdev)
> +{
> + /* deactivate previous settings */
> + del_timer_sync(&led_cdev->blink_timer);
> + led_cdev->blink_delay_on = 0;
> + led_cdev->blink_delay_off = 0;
> +}
> +
> +static void led_set_software_blink(struct led_classdev *led_cdev,
> + unsigned long delay_on,
> + unsigned long delay_off)
> +{
> + int current_brightness;
> +
> + current_brightness = led_get_brightness(led_cdev);
> + if (current_brightness)
> + led_cdev->blink_brightness = current_brightness;
> + if (!led_cdev->blink_brightness)
> + led_cdev->blink_brightness = led_cdev->max_brightness;
> +
> + if (led_get_trigger_data(led_cdev) &&
> + delay_on == led_cdev->blink_delay_on &&
> + delay_off == led_cdev->blink_delay_off)
> + return;
> +
> + led_stop_software_blink(led_cdev);
> +
> + led_cdev->blink_delay_on = delay_on;
> + led_cdev->blink_delay_off = delay_off;
> +
> + /* never on - don't blink */
> + if (!delay_on)
> + return;
> +
> + /* never off - just set to brightness */
> + if (!delay_off) {
> + led_set_brightness(led_cdev, led_cdev->blink_brightness);
> + return;
> + }
> +
> + mod_timer(&led_cdev->blink_timer, jiffies + 1);
> +}
> +
> +
> +void led_blink_set(struct led_classdev *led_cdev,
> + unsigned long *delay_on,
> + unsigned long *delay_off)
> +{
> + del_timer_sync(&led_cdev->blink_timer);
> +
> + if (led_cdev->blink_set &&
> + !led_cdev->blink_set(led_cdev, delay_on, delay_off))
> + return;
> +
> + /* blink with 1 Hz as default if nothing specified */
> + if (!*delay_on && !*delay_off)
> + *delay_on = *delay_off = 500;
> +
> + led_set_software_blink(led_cdev, *delay_on, *delay_off);
> +}
> +EXPORT_SYMBOL(led_blink_set);
> +
> +void led_brightness_set(struct led_classdev *led_cdev,
> + enum led_brightness brightness)
> +{
> + led_stop_software_blink(led_cdev);
> + led_cdev->brightness_set(led_cdev, brightness);
> +}
> +EXPORT_SYMBOL(led_brightness_set);
--
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