[linux-2.6-block.git] / drivers / pcmcia / pxa2xx_palmtx.c

/*
 * linux/drivers/pcmcia/pxa2xx_palmtx.c
 *
 * Driver for Palm T|X PCMCIA
 *
 * 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/palmtx.h>
#include "soc_common.h"

static struct gpio palmtx_pcmcia_gpios[] = {
	{ GPIO_NR_PALMTX_PCMCIA_POWER1,	GPIOF_INIT_LOW,	"PCMCIA Power 1" },
	{ GPIO_NR_PALMTX_PCMCIA_POWER2,	GPIOF_INIT_LOW,	"PCMCIA Power 2" },
	{ GPIO_NR_PALMTX_PCMCIA_RESET,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
	{ GPIO_NR_PALMTX_PCMCIA_READY,	GPIOF_IN,	"PCMCIA Ready" },
};

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

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

	skt->socket.pci_irq = gpio_to_irq(GPIO_NR_PALMTX_PCMCIA_READY);

	return ret;
}

static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free_array(palmtx_pcmcia_gpios, ARRAY_SIZE(palmtx_pcmcia_gpios));
}

static void palmtx_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	state->detect = 1; /* always inserted */
	state->ready  = !!gpio_get_value(GPIO_NR_PALMTX_PCMCIA_READY);
	state->bvd1   = 1;
	state->bvd2   = 1;
	state->wrprot = 0;
	state->vs_3v  = 1;
	state->vs_Xv  = 0;
}

static int
palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
				const socket_state_t *state)
{
	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1);
	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1);
	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET,
			!!(state->flags & SS_RESET));

	return 0;
}

static struct pcmcia_low_level palmtx_pcmcia_ops = {
	.owner			= THIS_MODULE,

	.first			= 0,
	.nr			= 1,

	.hw_init		= palmtx_pcmcia_hw_init,
	.hw_shutdown		= palmtx_pcmcia_hw_shutdown,

	.socket_state		= palmtx_pcmcia_socket_state,
	.configure_socket	= palmtx_pcmcia_configure_socket,
};

static struct platform_device *palmtx_pcmcia_device;

static int __init palmtx_pcmcia_init(void)
{
	int ret;

	if (!machine_is_palmtx())
		return -ENODEV;

	palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	if (!palmtx_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops,
					sizeof(palmtx_pcmcia_ops));

	if (!ret)
		ret = platform_device_add(palmtx_pcmcia_device);

	if (ret)
		platform_device_put(palmtx_pcmcia_device);

	return ret;
}

static void __exit palmtx_pcmcia_exit(void)
{
	platform_device_unregister(palmtx_pcmcia_device);
}

module_init(palmtx_pcmcia_init);
module_exit(palmtx_pcmcia_exit);

MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("PCMCIA support for Palm T|X");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
MODULE_LICENSE("GPL");
Commit	Line	Data
35978408 MV	1	/*
	2	* linux/drivers/pcmcia/pxa2xx_palmtx.c
	3	*
	4	* Driver for Palm T\|X PCMCIA
	5	*
9ed3fbf1	6	* Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com>
35978408 MV	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/platform_device.h>
235a175c	16	#include <linux/gpio.h>
35978408 MV	17
35978408 MV	18	#include <asm/mach-types.h>
a09e64fb	19	#include <mach/palmtx.h>
35978408 MV	20	#include "soc_common.h"
35978408 MV	21
235a175c MV	22	static struct gpio palmtx_pcmcia_gpios[] = {
	23	{ GPIO_NR_PALMTX_PCMCIA_POWER1, GPIOF_INIT_LOW, "PCMCIA Power 1" },
	24	{ GPIO_NR_PALMTX_PCMCIA_POWER2, GPIOF_INIT_LOW, "PCMCIA Power 2" },
	25	{ GPIO_NR_PALMTX_PCMCIA_RESET, GPIOF_INIT_HIGH,"PCMCIA Reset" },
	26	{ GPIO_NR_PALMTX_PCMCIA_READY, GPIOF_IN, "PCMCIA Ready" },
	27	};
	28
35978408 MV	29	static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
35978408 MV	30	{
574047f9 MV	31	int ret;
574047f9 MV	32
235a175c MV	33	ret = gpio_request_array(palmtx_pcmcia_gpios,
235a175c MV	34	ARRAY_SIZE(palmtx_pcmcia_gpios));
574047f9	35
66024db5	36	skt->socket.pci_irq = gpio_to_irq(GPIO_NR_PALMTX_PCMCIA_READY);
574047f9	37
574047f9	38	return ret;
35978408 MV	39	}
	40
	41	static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	42	{
235a175c	43	gpio_free_array(palmtx_pcmcia_gpios, ARRAY_SIZE(palmtx_pcmcia_gpios));
35978408 MV	44	}
	45
	46	static void palmtx_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_PALMTX_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
	58	static int
	59	palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	60	const socket_state_t *state)
	61	{
	62	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1);
	63	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1);
	64	gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET,
	65	!!(state->flags & SS_RESET));
	66
	67	return 0;
	68	}
	69
35978408 MV	70	static struct pcmcia_low_level palmtx_pcmcia_ops = {
	71	.owner = THIS_MODULE,
	72
	73	.first = 0,
	74	.nr = 1,
	75
	76	.hw_init = palmtx_pcmcia_hw_init,
	77	.hw_shutdown = palmtx_pcmcia_hw_shutdown,
	78
	79	.socket_state = palmtx_pcmcia_socket_state,
	80	.configure_socket = palmtx_pcmcia_configure_socket,
35978408 MV	81	};
	82
	83	static struct platform_device *palmtx_pcmcia_device;
	84
	85	static int __init palmtx_pcmcia_init(void)
	86	{
	87	int ret;
	88
	89	if (!machine_is_palmtx())
	90	return -ENODEV;
	91
	92	palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	93	if (!palmtx_pcmcia_device)
	94	return -ENOMEM;
	95
	96	ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops,
	97	sizeof(palmtx_pcmcia_ops));
	98
	99	if (!ret)
	100	ret = platform_device_add(palmtx_pcmcia_device);
	101
	102	if (ret)
	103	platform_device_put(palmtx_pcmcia_device);
	104
	105	return ret;
	106	}
	107
	108	static void __exit palmtx_pcmcia_exit(void)
	109	{
	110	platform_device_unregister(palmtx_pcmcia_device);
	111	}
	112
574047f9	113	module_init(palmtx_pcmcia_init);
35978408 MV	114	module_exit(palmtx_pcmcia_exit);
	115
	116	MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
	117	MODULE_DESCRIPTION("PCMCIA support for Palm T\|X");
	118	MODULE_ALIAS("platform:pxa2xx-pcmcia");
	119	MODULE_LICENSE("GPL");