Subject: [PATCH v2 09/10] gpio: pxa: bind to pinctrl by request

From: [email-masked] (Igor Grinberg)
Date: Wed, 06 Feb 2013 16:11:42 +0200

On 02/03/13 12:15, Haojian Zhuang wrote:
> While gpio pins is requested, request the pin of pinctrl driver first.
> 
> Signed-off-by: Haojian Zhuang <[email-masked]>
> ---
>  drivers/gpio/gpio-pxa.c |   19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
> index 5c39db3..c9cc636 100644
> --- a/drivers/gpio/gpio-pxa.c
> +++ b/drivers/gpio/gpio-pxa.c
> @@ -23,6 +23,7 @@
>  #include <linux/io.h>
>  #include <linux/of.h>
>  #include <linux/of_device.h>
> +#include <linux/pinctrl/consumer.h>
>  #include <linux/platform_device.h>
>  #include <linux/syscore_ops.h>
>  #include <linux/slab.h>
> @@ -159,6 +160,23 @@ int pxa_irq_to_gpio(struct irq_data *d)
>  	return gpio;
>  }
>  
> +static int pxa_gpio_request(struct gpio_chip *gc, unsigned offset)
> +{
> +	/*
> +	 * Map back to global GPIO space and request muxing, the direction
> +	 * parameter does not matter for this controller.
> +	 */
> +	int gpio = gc->base + offset;
> +
> +	/*
> +	 * Platforms in ARCH_PXA doesn't move to device tree yet,
> +	 * and PINCTRL_SINGLE is depend on device tree.
> +	 */ 

If this is interesting, git am says:
patch:32: trailing whitespace.
         */ 
warning: 1 line adds whitespace errors.

> +	if (IS_ENABLED(CONFIG_PINCTRL_SINGLE))
> +		return pinctrl_request_gpio(gpio);
> +	return 0;
> +}
> +
>  static int pxa_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
>  {
>  	struct pxa_gpio_chip *chip = NULL;
> @@ -471,6 +489,7 @@ static int pxa_init_gpio_chip(struct platform_device *pdev, int gpio_end,
>  		gc->base  = gpio;
>  		gc->label = chips[i].label;
>  
> +		gc->request = pxa_gpio_request;
>  		gc->direction_input  = pxa_gpio_direction_input;
>  		gc->direction_output = pxa_gpio_direction_output;
>  		gc->get = pxa_gpio_get;
> 

-- 
Regards,
Igor.