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SubjectRe: [RESEND,v2 2/2] leds: tlc591xx: Use the OF version of the LED registration function
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On 10/09/2019 22:08, Jacek Anaszewski wrote:
> Hi Jean,
>
> Thank you the patch.
>
> On 9/10/19 3:38 PM, Jean-Jacques Hiblot wrote:
>> The driver parses the device-tree to identify which LED should be handled.
>> Since the information about the device node is known at this time, we can
>> provide the LED core with it. It may be useful later.
>>
>> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
>> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
>> Acked-by: Pavel Machek <pavel@ucw.cz>
>> ---
>> drivers/leds/leds-tlc591xx.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c
>> index 3d5a4b92f016..10764a62cb71 100644
>> --- a/drivers/leds/leds-tlc591xx.c
>> +++ b/drivers/leds/leds-tlc591xx.c
>> @@ -207,7 +207,7 @@ tlc591xx_probe(struct i2c_client *client,
>> led->led_no = reg;
>> led->ldev.brightness_set_blocking = tlc591xx_brightness_set;
>> led->ldev.max_brightness = LED_FULL;
>> - err = devm_led_classdev_register(dev, &led->ldev);
>> + err = devm_of_led_classdev_register(dev, child, &led->ldev);
> devm_of_led_classdev_register() has been replaced with
> devm_led_classdev_register_ext() recently. Do you have some specific
> reason for passing OF node to the LED registration function?

Not anymore at this point.

I used the OF because the other patchset I posted (leds: Add control of
the voltage/current regulator to the LED core) uses the of_node to find
a regulator in the node of the LED. Since the regulator stuff is going
to need some rework, we can drop this patch.

Thanks

JJ

> Currently this is beneficial only for generic LED name composition
> mechanism basing on 'function' and 'color' DT properties so if you
> want you can convert the driver to that. Please compare such recent
> conversions in linux-leds.git for-next branch [0][1].
>
>> if (err < 0) {
>> dev_err(dev, "couldn't register LED %s\n",
>> led->ldev.name);
>>
> [0]
> https://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds.git/commit/?h=for-next&id=a50ff28348934913c46feb7945571329e46c70b3
> [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds.git/commit/?h=for-next&id=4dcbc8f8c59f4b618d651f5ba884ee5bf562c8de
>

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