On Tue, Aug 21, 2012 at 5:03 PM, Kim, Milo <Milo.Kim@xxxxxx> wrote:
> The name of each led channel is configurable.
> If the name is NULL, just use the channel id for making the channel name
>
> Signed-off-by: Milo(Woogyom) Kim <milo.kim@xxxxxx>
> ---
> Documentation/leds/leds-lp5523.txt | 7 +++++--
> drivers/leds/leds-lp5523.c | 10 +++++++---
> include/linux/leds-lp5523.h | 1 +
> 3 files changed, 13 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/leds/leds-lp5523.txt b/Documentation/leds/leds-lp5523.txt
> index fad2feb..e958d9a 100644
> --- a/Documentation/leds/leds-lp5523.txt
> +++ b/Documentation/leds/leds-lp5523.txt
> @@ -10,7 +10,9 @@ Contact: Samu Onkalo (samu.p.onkalo-at-nokia.com)
> Description
> -----------
> LP5523 can drive up to 9 channels. Leds can be controlled directly via
> -the led class control interface. Channels have generic names:
> +the led class control interface.
> +The name of each channel is configurable in the platform data.
> +If the name is NULL, channels have generic names:
> lp5523:channelx where x is 0...8
>
> The chip provides 3 engines. Each engine can control channels without
> @@ -46,12 +48,13 @@ Note - chan_nr can have values between 0 and 8.
>
> static struct lp5523_led_config lp5523_led_config[] = {
> {
> + .name = "red",
> .chan_nr = 0,
> .led_current = 50,
> .max_current = 130,
> },
> ...
> - }, {
> + {
> .chan_nr = 8,
> .led_current = 50,
> .max_current = 130,
> diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
> index fbc12ac..9fd9a92 100644
> --- a/drivers/leds/leds-lp5523.c
> +++ b/drivers/leds/leds-lp5523.c
> @@ -846,10 +846,14 @@ static int __devinit lp5523_init_led(struct lp5523_led *led, struct device *dev,
> return -EINVAL;
> }
>
> - snprintf(name, sizeof(name), "%s:channel%d",
> - pdata->label ?: "lp5523", chan);
> + if (pdata->led_config[chan].name) {
> + led->cdev.name = pdata->led_config[chan].name;
> + } else {
> + snprintf(name, sizeof(name), "%s:channel%d",
> + pdata->label ?: "lp5523", chan);
Why we need a test here "pdata->label ?:"? From the document, looks
like we use lp5523:channel%d as default.
> + led->cdev.name = name;
> + }
>
> - led->cdev.name = name;
> led->cdev.brightness_set = lp5523_set_brightness;
> res = led_classdev_register(dev, &led->cdev);
> if (res < 0) {
> diff --git a/include/linux/leds-lp5523.h b/include/linux/leds-lp5523.h
> index 2694289..727877f 100644
> --- a/include/linux/leds-lp5523.h
> +++ b/include/linux/leds-lp5523.h
> @@ -26,6 +26,7 @@
> /* See Documentation/leds/leds-lp5523.txt */
>
> struct lp5523_led_config {
> + const char *name;
> u8 chan_nr;
> u8 led_current; /* mA x10, 0 if led is not connected */
> u8 max_current;
> --
> 1.7.2.5
>
>
> Best Regards,
> Milo
>
>
--
Bryan Wu <bryan.wu@xxxxxxxxxxxxx>
Kernel Developer +86.186-168-78255 Mobile
Canonical Ltd. www.canonical.com
Ubuntu - Linux for human beings | www.ubuntu.com
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