1/*
  2 * linux/drivers/pcmcia/pxa2xx_palmld.c
  3 *
  4 * Driver for Palm LifeDrive PCMCIA
  5 *
  6 * Copyright (C) 2006 Alex Osborne <ato@meshy.org>
  7 * Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com>
  8 *
  9 * This program is free software; you can redistribute it and/or modify
 10 * it under the terms of the GNU General Public License version 2 as
 11 * published by the Free Software Foundation.
 12 *
 13 */
 14
 15#include <linux/module.h>
 16#include <linux/platform_device.h>
 17#include <linux/gpio.h>
 18
 19#include <asm/mach-types.h>
 20#include <mach/palmld.h>
 21#include "soc_common.h"
 22
 23static struct gpio palmld_pcmcia_gpios[] = {
 24	{ GPIO_NR_PALMLD_PCMCIA_POWER,	GPIOF_INIT_LOW,	"PCMCIA Power" },
 25	{ GPIO_NR_PALMLD_PCMCIA_RESET,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
 26	{ GPIO_NR_PALMLD_PCMCIA_READY,	GPIOF_IN,	"PCMCIA Ready" },
 27};
 28
 29static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
 30{
 31	int ret;
 32
 33	ret = gpio_request_array(palmld_pcmcia_gpios,
 34				ARRAY_SIZE(palmld_pcmcia_gpios));
 35
 36	skt->socket.pci_irq = IRQ_GPIO(GPIO_NR_PALMLD_PCMCIA_READY);
 37
 38	return ret;
 39}
 40
 41static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
 42{
 43	gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios));
 44}
 45
 46static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
 47					struct pcmcia_state *state)
 48{
 49	state->detect = 1; /* always inserted */
 50	state->ready  = !!gpio_get_value(GPIO_NR_PALMLD_PCMCIA_READY);
 51	state->bvd1   = 1;
 52	state->bvd2   = 1;
 53	state->wrprot = 0;
 54	state->vs_3v  = 1;
 55	state->vs_Xv  = 0;
 56}
 57
 58static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
 59					const socket_state_t *state)
 60{
 61	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1);
 62	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET,
 63			!!(state->flags & SS_RESET));
 64
 65	return 0;
 66}
 67
 68static struct pcmcia_low_level palmld_pcmcia_ops = {
 69	.owner			= THIS_MODULE,
 70
 71	.first			= 1,
 72	.nr			= 1,
 73
 74	.hw_init		= palmld_pcmcia_hw_init,
 75	.hw_shutdown		= palmld_pcmcia_hw_shutdown,
 76
 77	.socket_state		= palmld_pcmcia_socket_state,
 78	.configure_socket	= palmld_pcmcia_configure_socket,
 79};
 80
 81static struct platform_device *palmld_pcmcia_device;
 82
 83static int __init palmld_pcmcia_init(void)
 84{
 85	int ret;
 86
 87	if (!machine_is_palmld())
 88		return -ENODEV;
 89
 90	palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
 91	if (!palmld_pcmcia_device)
 92		return -ENOMEM;
 93
 94	ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
 95					sizeof(palmld_pcmcia_ops));
 96
 97	if (!ret)
 98		ret = platform_device_add(palmld_pcmcia_device);
 99
100	if (ret)
101		platform_device_put(palmld_pcmcia_device);
102
103	return ret;
104}
105
106static void __exit palmld_pcmcia_exit(void)
107{
108	platform_device_unregister(palmld_pcmcia_device);
109}
110
111module_init(palmld_pcmcia_init);
112module_exit(palmld_pcmcia_exit);
113
114MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
115	    " Marek Vasut <marek.vasut@gmail.com>");
116MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
117MODULE_ALIAS("platform:pxa2xx-pcmcia");
118MODULE_LICENSE("GPL");