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Commit bbb58a12 authored by Russell King's avatar Russell King
Browse files

PCMCIA: sa11x0: cerf: convert reset handling to use GPIO subsystem 



Rather than accessing GPSR and GPCR directly, use the GPIO subsystem
instead.

Acked-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent f793e3ab

arch/arm/mach-sa1100/include/mach/cerf.h

+1 −1
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ 


#define CERF_GPIO_CF_BVD2		19

#define CERF_GPIO_CF_BVD1		20

#define CERF_GPIO_CF_RESET		GPIO_GPIO (21)

#define CERF_GPIO_CF_RESET		21

#define CERF_GPIO_CF_IRQ		22

#define CERF_GPIO_CF_CD			23

drivers/pcmcia/sa1100_cerf.c

+14 −5
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <linux/device.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/gpio.h>



#include <mach/hardware.h>

#include <asm/mach-types.h>
@@ -21,6 +22,12 @@ 


static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)

{

	int ret;



	ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");

	if (ret)

		return ret;



	skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;

	skt->stat[SOC_STAT_CD].name = "CF_CD";

	skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
@@ -33,6 +40,11 @@ static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt) 
	return 0;

}



static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)

{

	gpio_free(CERF_GPIO_CF_RESET);

}



static void

cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)

{
@@ -57,11 +69,7 @@ cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, 
		return -1;

	}



	if (state->flags & SS_RESET) {

		GPSR = CERF_GPIO_CF_RESET;

	} else {

		GPCR = CERF_GPIO_CF_RESET;

	}

	gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));



	return 0;

}
@@ -69,6 +77,7 @@ cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, 
static struct pcmcia_low_level cerf_pcmcia_ops = { 

	.owner			= THIS_MODULE,

	.hw_init		= cerf_pcmcia_hw_init,

	.hw_shutdown		= cerf_pcmcia_hw_shutdown,

	.socket_state		= cerf_pcmcia_socket_state,

	.configure_socket	= cerf_pcmcia_configure_socket,

};