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[ARM] 5199/1: PalmLD: PCMCIA driver

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PCMCIA driver for Palm LifeDrive

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Marek Vašut 2008-08-16 15:35:57 +01:00 committed by Russell King
parent 574047f96a
commit 6d341675f8
2 changed files with 153 additions and 1 deletions
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3
drivers/pcmcia/Makefile
View File

@ -72,5 +72,6 @@ pxa2xx_cs-$(CONFIG_ARCH_LUBBOCK) += pxa2xx_lubbock.o sa1111_generic.o
pxa2xx_cs-$(CONFIG_MACH_MAINSTONE) += pxa2xx_mainstone.o
pxa2xx_cs-$(CONFIG_PXA_SHARPSL) += pxa2xx_sharpsl.o
pxa2xx_cs-$(CONFIG_MACH_ARMCORE) += pxa2xx_cm_x270.o
pxa2xx_cs-$(CONFIG_MACH_PALMTX) += pxa2xx_palmtx.o
pxa2xx_cs-$(CONFIG_MACH_PALMTX) += pxa2xx_palmtx.o
pxa2xx_cs-$(CONFIG_MACH_PALMLD) += pxa2xx_palmld.o

151
drivers/pcmcia/pxa2xx_palmld.c Normal file
View File

@ -0,0 +1,151 @@
/*
* 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 = 0,
.nr = 2,
.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");