Re: [PATCH] leds: s3c24xx: Convert to use GPIO descriptors

[Krzysztof Kozlowski <krzk@kernel.org>]

On Sat, Jun 27, 2020 at 02:10:15AM +0200, Linus Walleij wrote:
> This converts the s3c24xx LED driver to use GPIO descriptors
> and also modify all board files to account for these changes
> by registering the appropriate GPIO tables for each board.
> 
> The driver was using a custom flag to indicate open drain
> (tristate) but this can be handled by standard descriptor
> machine tables.
> 
> The driver was setting non-pull-up for the pin using the custom
> S3C24xx GPIO API, but this is a custom pin control system used
> by the S3C24xx and no generic GPIO function, so this has simply
> been pushed back into the respective board files.
> 
> Cc: Ben Dooks <ben-linux@fluff.org>
> Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
> Cc: Krzysztof Kozlowski <krzk@kernel.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
>  arch/arm/mach-s3c24xx/common-smdk.c        | 67 +++++++++++++++-------
>  arch/arm/mach-s3c24xx/mach-mini2440.c      | 63 +++++++++++++++++---
>  arch/arm/mach-s3c24xx/mach-n30.c           | 54 +++++++++++++++--
>  arch/arm/mach-s3c24xx/mach-qt2410.c        | 12 +++-
>  arch/arm/mach-s3c24xx/mach-vr1000.c        | 38 +++++++++++-
>  drivers/leds/leds-s3c24xx.c                | 37 +++---------
>  include/linux/platform_data/leds-s3c24xx.h |  6 --
>  7 files changed, 200 insertions(+), 77 deletions(-)
> 
> diff --git a/arch/arm/mach-s3c24xx/common-smdk.c b/arch/arm/mach-s3c24xx/common-smdk.c
> index 58e30cad386c..10fc804c4ec5 100644
> --- a/arch/arm/mach-s3c24xx/common-smdk.c
> +++ b/arch/arm/mach-s3c24xx/common-smdk.c
> @@ -14,6 +14,7 @@
>  #include <linux/timer.h>
>  #include <linux/init.h>
>  #include <linux/gpio.h>
> +#include <linux/gpio/machine.h>
>  #include <linux/device.h>
>  #include <linux/platform_device.h>
>  
> @@ -44,29 +45,53 @@
>  
>  /* LED devices */
>  
> +static struct gpiod_lookup_table smdk_led4_gpio_table = {
> +	.dev_id = "s3c24xx_led.0",
> +	.table = {
> +		GPIO_LOOKUP("GPF", 4, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
> +		{ },
> +	},
> +};
> +
> +static struct gpiod_lookup_table smdk_led5_gpio_table = {
> +	.dev_id = "s3c24xx_led.1",
> +	.table = {
> +		GPIO_LOOKUP("GPF", 6, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),

The original code has here GPF(5).

> +		{ },
> +	},
> +};
> +
> +static struct gpiod_lookup_table smdk_led6_gpio_table = {
> +	.dev_id = "s3c24xx_led.2",
> +	.table = {
> +		GPIO_LOOKUP("GPF", 5, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),

Ditto, but GPF(6).

Rest looks fine. I will need Jacek's/Pavel's/Dan's ack to take it through
samsung-soc.

Best regards,
Krzysztof