mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 00:52:01 +00:00
a9bb5a4bf9
Convert all the PXA platform socket drivers to use the new irq/gpio management provided by soc_common. This relieves these drivers from having to do anything with these GPIOs other than provide the numbers to soc_common. Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
/*
|
|
* linux/drivers/pcmcia/pxa/pxa_cm_x255.c
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* Compulab Ltd., 2003, 2007, 2008
|
|
* Mike Rapoport <mike@compulab.co.il>
|
|
*
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/export.h>
|
|
|
|
#include "soc_common.h"
|
|
|
|
#define GPIO_PCMCIA_SKTSEL (54)
|
|
#define GPIO_PCMCIA_S0_CD_VALID (16)
|
|
#define GPIO_PCMCIA_S1_CD_VALID (17)
|
|
#define GPIO_PCMCIA_S0_RDYINT (6)
|
|
#define GPIO_PCMCIA_S1_RDYINT (8)
|
|
#define GPIO_PCMCIA_RESET (9)
|
|
|
|
static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
|
|
if (ret)
|
|
return ret;
|
|
gpio_direction_output(GPIO_PCMCIA_RESET, 0);
|
|
|
|
if (skt->nr == 0) {
|
|
skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
|
|
skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
|
|
skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
|
|
skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
|
|
} else {
|
|
skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID;
|
|
skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD";
|
|
skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT;
|
|
skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY";
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
|
|
{
|
|
gpio_free(GPIO_PCMCIA_RESET);
|
|
}
|
|
|
|
|
|
static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_state *state)
|
|
{
|
|
state->vs_3v = 0;
|
|
state->vs_Xv = 0;
|
|
state->wrprot = 0; /* not available */
|
|
}
|
|
|
|
|
|
static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
|
|
const socket_state_t *state)
|
|
{
|
|
switch (skt->nr) {
|
|
case 0:
|
|
if (state->flags & SS_RESET) {
|
|
gpio_set_value(GPIO_PCMCIA_SKTSEL, 0);
|
|
udelay(1);
|
|
gpio_set_value(GPIO_PCMCIA_RESET, 1);
|
|
udelay(10);
|
|
gpio_set_value(GPIO_PCMCIA_RESET, 0);
|
|
}
|
|
break;
|
|
case 1:
|
|
if (state->flags & SS_RESET) {
|
|
gpio_set_value(GPIO_PCMCIA_SKTSEL, 1);
|
|
udelay(1);
|
|
gpio_set_value(GPIO_PCMCIA_RESET, 1);
|
|
udelay(10);
|
|
gpio_set_value(GPIO_PCMCIA_RESET, 0);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = {
|
|
.owner = THIS_MODULE,
|
|
.hw_init = cmx255_pcmcia_hw_init,
|
|
.hw_shutdown = cmx255_pcmcia_shutdown,
|
|
.socket_state = cmx255_pcmcia_socket_state,
|
|
.configure_socket = cmx255_pcmcia_configure_socket,
|
|
.nr = 1,
|
|
};
|
|
|
|
static struct platform_device *cmx255_pcmcia_device;
|
|
|
|
int __init cmx255_pcmcia_init(void)
|
|
{
|
|
int ret;
|
|
|
|
cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
|
|
|
|
if (!cmx255_pcmcia_device)
|
|
return -ENOMEM;
|
|
|
|
ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops,
|
|
sizeof(cmx255_pcmcia_ops));
|
|
|
|
if (ret == 0) {
|
|
printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n");
|
|
ret = platform_device_add(cmx255_pcmcia_device);
|
|
}
|
|
|
|
if (ret)
|
|
platform_device_put(cmx255_pcmcia_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void __exit cmx255_pcmcia_exit(void)
|
|
{
|
|
platform_device_unregister(cmx255_pcmcia_device);
|
|
}
|