linux-kernel - Re: [PATCH v2] ARM: eukrea_mbimx27-baseboard - use stock get_pendown

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Message-ID: <20121204210922.GA8620@core.coreip.homeip.net>
Date:	Tue, 4 Dec 2012 13:09:22 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	Sascha Hauer <kernel@...gutronix.de>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Eric Bénard <ebenard@...rea.com>
Subject: Re: [PATCH v2] ARM: eukrea_mbimx27-baseboard - use stock
 get_pendown_state() in ads7846

On Tue, Nov 27, 2012 at 01:03:56AM -0800, Dmitry Torokhov wrote:
> The default implementation matches exactly our custom one so we can switch
> to using the default one. As a bonus the driver will take care of setting
> GPIO line for us.
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>

Eric, Sascha, could I get a formal ack on this one please ?

> ---
> 
> Adjusted to use IMX_GPIO_NR() macro.
> 
>  arch/arm/mach-imx/eukrea_mbimx27-baseboard.c |   19 +------------------
>  1 file changed, 1 insertion(+), 18 deletions(-)
> 
> diff --git a/arch/arm/mach-imx/eukrea_mbimx27-baseboard.c b/arch/arm/mach-imx/eukrea_mbimx27-baseboard.c
> index 98aef57..f361143 100644
> --- a/arch/arm/mach-imx/eukrea_mbimx27-baseboard.c
> +++ b/arch/arm/mach-imx/eukrea_mbimx27-baseboard.c
> @@ -238,24 +238,8 @@ static const struct imxuart_platform_data uart_pdata __initconst = {
>  	.flags = IMXUART_HAVE_RTSCTS,
>  };
>  
> -#define ADS7846_PENDOWN (GPIO_PORTD | 25)
> -
> -static void __maybe_unused ads7846_dev_init(void)
> -{
> -	if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
> -		printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
> -		return;
> -	}
> -	gpio_direction_input(ADS7846_PENDOWN);
> -}
> -
> -static int ads7846_get_pendown_state(void)
> -{
> -	return !gpio_get_value(ADS7846_PENDOWN);
> -}
> -
>  static struct ads7846_platform_data ads7846_config __initdata = {
> -	.get_pendown_state	= ads7846_get_pendown_state,
> +	.gpio_pendown		= IMX_GPIO_NR(4, 25),
>  	.keep_vref_on		= 1,
>  };
>  
> @@ -323,7 +307,6 @@ void __init eukrea_mbimx27_baseboard_init(void)
>  	|| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
>  	/* ADS7846 Touchscreen controller init */
>  	mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
> -	ads7846_dev_init();
>  #endif
>  
>  	/* SPI_CS0 init */

-- 
Dmitry
--
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