linux-kernel - Re: [PATCH 08/36] gpio: aspeed: use new pinctrl GPIO helpers

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Date:   Wed, 04 Oct 2023 10:00:38 +1030
From:   Andrew Jeffery <andrew@...econstruct.com.au>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andy@...nel.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Joel Stanley <joel@....id.au>,
        linux-arm-kernel@...ts.infradead.org, linux-aspeed@...ts.ozlabs.org
Subject: Re: [PATCH 08/36] gpio: aspeed: use new pinctrl GPIO helpers

On Tue, 2023-10-03 at 16:50 +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> Replace the pinctrl helpers taking the global GPIO number as argument
> with the improved variants that instead take a pointer to the GPIO chip
> and the controller-relative offset.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> ---
>  drivers/gpio/gpio-aspeed.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
> index da33bbbdacb9..d3aa1cfd4ace 100644
> --- a/drivers/gpio/gpio-aspeed.c
> +++ b/drivers/gpio/gpio-aspeed.c
> @@ -750,12 +750,12 @@ static int aspeed_gpio_request(struct gpio_chip *chip, unsigned int offset)
>  	if (!have_gpio(gpiochip_get_data(chip), offset))
>  		return -ENODEV;
>  
> -	return pinctrl_gpio_request(chip->base + offset);
> +	return pinctrl_gpio_request_new(chip, offset);
>  }
>  
>  static void aspeed_gpio_free(struct gpio_chip *chip, unsigned int offset)
>  {
> -	pinctrl_gpio_free(chip->base + offset);
> +	pinctrl_gpio_free_new(chip, offset);
>  }
>  
>  static int usecs_to_cycles(struct aspeed_gpio *gpio, unsigned long usecs,
> @@ -973,7 +973,7 @@ static int aspeed_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
>  	else if (param == PIN_CONFIG_BIAS_DISABLE ||
>  			param == PIN_CONFIG_BIAS_PULL_DOWN ||
>  			param == PIN_CONFIG_DRIVE_STRENGTH)
> -		return pinctrl_gpio_set_config(offset, config);
> +		return pinctrl_gpio_set_config_new(chip, offset, config);

Ah, this looks like it removes a bug too. Nice.

Reviewed-by: Andrew Jeffery <andrew@...econstruct.com.au>

>  	else if (param == PIN_CONFIG_DRIVE_OPEN_DRAIN ||
>  			param == PIN_CONFIG_DRIVE_OPEN_SOURCE)
>  		/* Return -ENOTSUPP to trigger emulation, as per datasheet */