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Commit 94b43b67 authored by Kim, Milo's avatar Kim, Milo Committed by Bryan Wu
Browse files

leds-lp5523: add channel name in the platform data 



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: default avatarMilo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: default avatarBryan Wu <bryan.wu@canonical.com>
parent 127aedc8

Documentation/leds/leds-lp5523.txt

+18 −3
Original line number Diff line number Diff line
@@ -10,8 +10,22 @@ 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:

lp5523:channelx where x is 0...8

the led class control interface.

The name of each channel is configurable in the platform data - name and label.

There are three options to make the channel name.



a) Define the 'name' in the platform data

To make specific channel name, then use 'name' platform data.

/sys/class/leds/R1               (name: 'R1')

/sys/class/leds/B1               (name: 'B1')



b) Use the 'label' with no 'name' field

For one device name with channel number, then use 'label'.

/sys/class/leds/RGB:channelN     (label: 'RGB', N: 0 ~ 8)



c) Default

If both fields are NULL, 'lp5523' is used by default.

/sys/class/leds/lp5523:channelN  (N: 0 ~ 8)



The chip provides 3 engines. Each engine can control channels without

interaction from the main CPU. Details of the micro engine code can be found
@@ -46,12 +60,13 @@ Note - chan_nr can have values between 0 and 8. 


static struct lp5523_led_config lp5523_led_config[] = {

        {

		.name		= "D1",

                .chan_nr        = 0,

                .led_current    = 50,

		.max_current    = 130,

        },

...

        }, {

        {

                .chan_nr        = 8,

                .led_current    = 50,

		.max_current    = 130,

drivers/leds/leds-lp5523.c

+7 −3
Original line number Diff line number Diff line
@@ -846,10 +846,14 @@ static int __devinit lp5523_init_led(struct lp5523_led *led, struct device *dev, 
			return -EINVAL;

		}



		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);



			led->cdev.name = name;

		}



		led->cdev.brightness_set = lp5523_set_brightness;

		res = led_classdev_register(dev, &led->cdev);

		if (res < 0) {

include/linux/leds-lp5523.h

+1 −0
Original line number Diff line number Diff line
@@ -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;