forked from luck/tmp_suning_uos_patched
d66ea8d4c2
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Eric Miao <eric.miao@marvell.com>
152 lines
3.5 KiB
C
152 lines
3.5 KiB
C
/*
|
|
* linux/drivers/pcmcia/pxa2xx_palmld.c
|
|
*
|
|
* Driver for Palm LifeDrive PCMCIA
|
|
*
|
|
* Copyright (C) 2006 Alex Osborne <ato@meshy.org>
|
|
* Copyright (C) 2007-2008 Marek Vasut <marek.vasut@gmail.com>
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <mach/palmld.h>
|
|
#include "soc_common.h"
|
|
|
|
static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
int ret;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_POWER, "PCMCIA PWR");
|
|
if (ret)
|
|
goto err1;
|
|
ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_POWER, 0);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_RESET, "PCMCIA RST");
|
|
if (ret)
|
|
goto err2;
|
|
ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_RESET, 1);
|
|
if (ret)
|
|
goto err3;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_READY, "PCMCIA RDY");
|
|
if (ret)
|
|
goto err3;
|
|
ret = gpio_direction_input(GPIO_NR_PALMLD_PCMCIA_READY);
|
|
if (ret)
|
|
goto err4;
|
|
|
|
skt->irq = IRQ_GPIO(GPIO_NR_PALMLD_PCMCIA_READY);
|
|
return 0;
|
|
|
|
err4:
|
|
gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
|
|
err3:
|
|
gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
|
|
err2:
|
|
gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
|
|
err1:
|
|
return ret;
|
|
}
|
|
|
|
static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
|
|
{
|
|
gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
|
|
gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
|
|
gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
|
|
}
|
|
|
|
static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_state *state)
|
|
{
|
|
state->detect = 1; /* always inserted */
|
|
state->ready = !!gpio_get_value(GPIO_NR_PALMLD_PCMCIA_READY);
|
|
state->bvd1 = 1;
|
|
state->bvd2 = 1;
|
|
state->wrprot = 0;
|
|
state->vs_3v = 1;
|
|
state->vs_Xv = 0;
|
|
}
|
|
|
|
static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
|
|
const socket_state_t *state)
|
|
{
|
|
gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1);
|
|
gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET,
|
|
!!(state->flags & SS_RESET));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void palmld_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
}
|
|
|
|
static void palmld_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
|
|
{
|
|
}
|
|
|
|
static struct pcmcia_low_level palmld_pcmcia_ops = {
|
|
.owner = THIS_MODULE,
|
|
|
|
.first = 1,
|
|
.nr = 1,
|
|
|
|
.hw_init = palmld_pcmcia_hw_init,
|
|
.hw_shutdown = palmld_pcmcia_hw_shutdown,
|
|
|
|
.socket_state = palmld_pcmcia_socket_state,
|
|
.configure_socket = palmld_pcmcia_configure_socket,
|
|
|
|
.socket_init = palmld_pcmcia_socket_init,
|
|
.socket_suspend = palmld_pcmcia_socket_suspend,
|
|
};
|
|
|
|
static struct platform_device *palmld_pcmcia_device;
|
|
|
|
static int __init palmld_pcmcia_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_palmld())
|
|
return -ENODEV;
|
|
|
|
palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
|
|
if (!palmld_pcmcia_device)
|
|
return -ENOMEM;
|
|
|
|
ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
|
|
sizeof(palmld_pcmcia_ops));
|
|
|
|
if (!ret)
|
|
ret = platform_device_add(palmld_pcmcia_device);
|
|
|
|
if (ret)
|
|
platform_device_put(palmld_pcmcia_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit palmld_pcmcia_exit(void)
|
|
{
|
|
platform_device_unregister(palmld_pcmcia_device);
|
|
}
|
|
|
|
module_init(palmld_pcmcia_init);
|
|
module_exit(palmld_pcmcia_exit);
|
|
|
|
MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
|
|
" Marek Vasut <marek.vasut@gmail.com>");
|
|
MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
|
|
MODULE_ALIAS("platform:pxa2xx-pcmcia");
|
|
MODULE_LICENSE("GPL");
|