[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / pxa2xx_palmld.c

/*
 * linux/drivers/pcmcia/pxa2xx_palmld.c
 *
 * Driver for Palm LifeDrive PCMCIA
 *
 * Copyright (C) 2006 Alex Osborne <ato@meshy.org>
 * Copyright (C) 2007-2011 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 struct gpio palmld_pcmcia_gpios[] = {
	{ GPIO_NR_PALMLD_PCMCIA_POWER,	GPIOF_INIT_LOW,	"PCMCIA Power" },
	{ GPIO_NR_PALMLD_PCMCIA_RESET,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
};

static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret;

	ret = gpio_request_array(palmld_pcmcia_gpios,
				ARRAY_SIZE(palmld_pcmcia_gpios));

	skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMLD_PCMCIA_READY;
	skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";

	return ret;
}

static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios));
}

static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	state->detect = 1; /* always inserted */
	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 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,
};

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");
Commit	Line	Data
6d341675 MV	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>
9ed3fbf1	7	* Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com>
6d341675 MV	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
2070417d MV	23	static 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" },
2070417d MV	26	};
2070417d MV	27
6d341675 MV	28	static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	29	{
	30	int ret;
	31
2070417d MV	32	ret = gpio_request_array(palmld_pcmcia_gpios,
2070417d MV	33	ARRAY_SIZE(palmld_pcmcia_gpios));
6d341675	34
a9bb5a4b RK	35	skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMLD_PCMCIA_READY;
a9bb5a4b RK	36	skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
6d341675	37
6d341675 MV	38	return ret;
	39	}
	40
	41	static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	42	{
2070417d	43	gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios));
6d341675 MV	44	}
	45
	46	static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	47	struct pcmcia_state *state)
	48	{
	49	state->detect = 1; /* always inserted */
6d341675 MV	50	state->vs_3v = 1;
	51	state->vs_Xv = 0;
	52	}
	53
	54	static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	55	const socket_state_t *state)
	56	{
	57	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1);
	58	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET,
	59	!!(state->flags & SS_RESET));
	60
	61	return 0;
	62	}
	63
6d341675 MV	64	static struct pcmcia_low_level palmld_pcmcia_ops = {
	65	.owner = THIS_MODULE,
	66
d66ea8d4 MV	67	.first = 1,
d66ea8d4 MV	68	.nr = 1,
6d341675 MV	69
	70	.hw_init = palmld_pcmcia_hw_init,
	71	.hw_shutdown = palmld_pcmcia_hw_shutdown,
	72
	73	.socket_state = palmld_pcmcia_socket_state,
	74	.configure_socket = palmld_pcmcia_configure_socket,
6d341675 MV	75	};
	76
	77	static struct platform_device *palmld_pcmcia_device;
	78
	79	static int __init palmld_pcmcia_init(void)
	80	{
	81	int ret;
	82
	83	if (!machine_is_palmld())
	84	return -ENODEV;
	85
	86	palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	87	if (!palmld_pcmcia_device)
	88	return -ENOMEM;
	89
	90	ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
	91	sizeof(palmld_pcmcia_ops));
	92
	93	if (!ret)
	94	ret = platform_device_add(palmld_pcmcia_device);
	95
	96	if (ret)
	97	platform_device_put(palmld_pcmcia_device);
	98
	99	return ret;
	100	}
	101
	102	static void __exit palmld_pcmcia_exit(void)
	103	{
	104	platform_device_unregister(palmld_pcmcia_device);
	105	}
	106
	107	module_init(palmld_pcmcia_init);
	108	module_exit(palmld_pcmcia_exit);
	109
	110	MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
	111	" Marek Vasut <marek.vasut@gmail.com>");
	112	MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
	113	MODULE_ALIAS("platform:pxa2xx-pcmcia");
	114	MODULE_LICENSE("GPL");