forked from Minki/linux
002939729c
commit 66024db
removes all other references of skt->irq by using
skt->socket.pci_irq, while leaving these two missed. Get them fixed.
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
231 lines
5.3 KiB
C
231 lines
5.3 KiB
C
/*
|
|
* linux/drivers/pcmcia/pxa2xx_palmtc.c
|
|
*
|
|
* Driver for Palm Tungsten|C PCMCIA
|
|
*
|
|
* Copyright (C) 2008 Alex Osborne <ato@meshy.org>
|
|
* Copyright (C) 2009 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 <linux/delay.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <mach/palmtc.h>
|
|
#include "soc_common.h"
|
|
|
|
static int palmtc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
int ret;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMTC_PCMCIA_POWER1, "PCMCIA PWR1");
|
|
if (ret)
|
|
goto err1;
|
|
ret = gpio_direction_output(GPIO_NR_PALMTC_PCMCIA_POWER1, 0);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMTC_PCMCIA_POWER2, "PCMCIA PWR2");
|
|
if (ret)
|
|
goto err2;
|
|
ret = gpio_direction_output(GPIO_NR_PALMTC_PCMCIA_POWER2, 0);
|
|
if (ret)
|
|
goto err3;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMTC_PCMCIA_POWER3, "PCMCIA PWR3");
|
|
if (ret)
|
|
goto err3;
|
|
ret = gpio_direction_output(GPIO_NR_PALMTC_PCMCIA_POWER3, 0);
|
|
if (ret)
|
|
goto err4;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMTC_PCMCIA_RESET, "PCMCIA RST");
|
|
if (ret)
|
|
goto err4;
|
|
ret = gpio_direction_output(GPIO_NR_PALMTC_PCMCIA_RESET, 1);
|
|
if (ret)
|
|
goto err5;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMTC_PCMCIA_READY, "PCMCIA RDY");
|
|
if (ret)
|
|
goto err5;
|
|
ret = gpio_direction_input(GPIO_NR_PALMTC_PCMCIA_READY);
|
|
if (ret)
|
|
goto err6;
|
|
|
|
ret = gpio_request(GPIO_NR_PALMTC_PCMCIA_PWRREADY, "PCMCIA PWRRDY");
|
|
if (ret)
|
|
goto err6;
|
|
ret = gpio_direction_input(GPIO_NR_PALMTC_PCMCIA_PWRREADY);
|
|
if (ret)
|
|
goto err7;
|
|
|
|
skt->socket.pci_irq = IRQ_GPIO(GPIO_NR_PALMTC_PCMCIA_READY);
|
|
return 0;
|
|
|
|
err7:
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_PWRREADY);
|
|
err6:
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_READY);
|
|
err5:
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_RESET);
|
|
err4:
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_POWER3);
|
|
err3:
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_POWER2);
|
|
err2:
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_POWER1);
|
|
err1:
|
|
return ret;
|
|
}
|
|
|
|
static void palmtc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
|
|
{
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_PWRREADY);
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_READY);
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_RESET);
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_POWER3);
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_POWER2);
|
|
gpio_free(GPIO_NR_PALMTC_PCMCIA_POWER1);
|
|
}
|
|
|
|
static void palmtc_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_state *state)
|
|
{
|
|
state->detect = 1; /* always inserted */
|
|
state->ready = !!gpio_get_value(GPIO_NR_PALMTC_PCMCIA_READY);
|
|
state->bvd1 = 1;
|
|
state->bvd2 = 1;
|
|
state->wrprot = 0;
|
|
state->vs_3v = 1;
|
|
state->vs_Xv = 0;
|
|
}
|
|
|
|
static int palmtc_wifi_powerdown(void)
|
|
{
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_RESET, 1);
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER2, 0);
|
|
mdelay(40);
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER1, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int palmtc_wifi_powerup(void)
|
|
{
|
|
int timeout = 50;
|
|
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER3, 1);
|
|
mdelay(50);
|
|
|
|
/* Power up the card, 1.8V first, after a while 3.3V */
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER1, 1);
|
|
mdelay(100);
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER2, 1);
|
|
|
|
/* Wait till the card is ready */
|
|
while (!gpio_get_value(GPIO_NR_PALMTC_PCMCIA_PWRREADY) &&
|
|
timeout) {
|
|
mdelay(1);
|
|
timeout--;
|
|
}
|
|
|
|
/* Power down the WiFi in case of error */
|
|
if (!timeout) {
|
|
palmtc_wifi_powerdown();
|
|
return 1;
|
|
}
|
|
|
|
/* Reset the card */
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_RESET, 1);
|
|
mdelay(20);
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_RESET, 0);
|
|
mdelay(25);
|
|
|
|
gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER3, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int palmtc_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
|
|
const socket_state_t *state)
|
|
{
|
|
int ret = 1;
|
|
|
|
if (state->Vcc == 0)
|
|
ret = palmtc_wifi_powerdown();
|
|
else if (state->Vcc == 33)
|
|
ret = palmtc_wifi_powerup();
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void palmtc_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
}
|
|
|
|
static void palmtc_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
|
|
{
|
|
}
|
|
|
|
static struct pcmcia_low_level palmtc_pcmcia_ops = {
|
|
.owner = THIS_MODULE,
|
|
|
|
.first = 0,
|
|
.nr = 1,
|
|
|
|
.hw_init = palmtc_pcmcia_hw_init,
|
|
.hw_shutdown = palmtc_pcmcia_hw_shutdown,
|
|
|
|
.socket_state = palmtc_pcmcia_socket_state,
|
|
.configure_socket = palmtc_pcmcia_configure_socket,
|
|
|
|
.socket_init = palmtc_pcmcia_socket_init,
|
|
.socket_suspend = palmtc_pcmcia_socket_suspend,
|
|
};
|
|
|
|
static struct platform_device *palmtc_pcmcia_device;
|
|
|
|
static int __init palmtc_pcmcia_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_palmtc())
|
|
return -ENODEV;
|
|
|
|
palmtc_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
|
|
if (!palmtc_pcmcia_device)
|
|
return -ENOMEM;
|
|
|
|
ret = platform_device_add_data(palmtc_pcmcia_device, &palmtc_pcmcia_ops,
|
|
sizeof(palmtc_pcmcia_ops));
|
|
|
|
if (!ret)
|
|
ret = platform_device_add(palmtc_pcmcia_device);
|
|
|
|
if (ret)
|
|
platform_device_put(palmtc_pcmcia_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit palmtc_pcmcia_exit(void)
|
|
{
|
|
platform_device_unregister(palmtc_pcmcia_device);
|
|
}
|
|
|
|
module_init(palmtc_pcmcia_init);
|
|
module_exit(palmtc_pcmcia_exit);
|
|
|
|
MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
|
|
" Marek Vasut <marek.vasut@gmail.com>");
|
|
MODULE_DESCRIPTION("PCMCIA support for Palm Tungsten|C");
|
|
MODULE_ALIAS("platform:pxa2xx-pcmcia");
|
|
MODULE_LICENSE("GPL");
|