[deliverable/linux.git] / drivers / pcmcia / pxa2xx_vpac270.c

/*
 * linux/drivers/pcmcia/pxa2xx_vpac270.c
 *
 * Driver for Voipac PXA270 PCMCIA and CF sockets
 *
 * Copyright (C) 2010-2011 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/gpio.h>
#include <linux/module.h>
#include <linux/platform_device.h>

#include <asm/mach-types.h>

#include <mach/vpac270.h>

#include "soc_common.h"

static struct gpio vpac270_pcmcia_gpios[] = {
	{ GPIO107_VPAC270_PCMCIA_PPEN,	GPIOF_INIT_LOW,	"PCMCIA PPEN" },
	{ GPIO11_VPAC270_PCMCIA_RESET,	GPIOF_INIT_LOW,	"PCMCIA Reset" },
};

static struct gpio vpac270_cf_gpios[] = {
	{ GPIO16_VPAC270_CF_RESET,	GPIOF_INIT_LOW,	"CF Reset" },
};

static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret;

	if (skt->nr == 0) {
		ret = gpio_request_array(vpac270_pcmcia_gpios,
				ARRAY_SIZE(vpac270_pcmcia_gpios));

		skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
		skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
		skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
	} else {
		ret = gpio_request_array(vpac270_cf_gpios,
				ARRAY_SIZE(vpac270_cf_gpios));

		skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
		skt->stat[SOC_STAT_CD].name = "CF CD";
		skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
		skt->stat[SOC_STAT_RDY].name = "CF Ready";
	}

	return ret;
}

static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	if (skt->nr == 0)
		gpio_free_array(vpac270_pcmcia_gpios,
					ARRAY_SIZE(vpac270_pcmcia_gpios));
	else
		gpio_free_array(vpac270_cf_gpios,
					ARRAY_SIZE(vpac270_cf_gpios));
}

static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	state->vs_3v  = 1;
	state->vs_Xv  = 0;
}

static int
vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
				const socket_state_t *state)
{
	if (skt->nr == 0) {
		gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
			(state->flags & SS_RESET));
		gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
			!(state->Vcc == 33 || state->Vcc == 50));
	} else {
		gpio_set_value(GPIO16_VPAC270_CF_RESET,
			(state->flags & SS_RESET));
	}

	return 0;
}

static struct pcmcia_low_level vpac270_pcmcia_ops = {
	.owner			= THIS_MODULE,

	.first			= 0,
	.nr			= 2,

	.hw_init		= vpac270_pcmcia_hw_init,
	.hw_shutdown		= vpac270_pcmcia_hw_shutdown,

	.socket_state		= vpac270_pcmcia_socket_state,
	.configure_socket	= vpac270_pcmcia_configure_socket,
};

static struct platform_device *vpac270_pcmcia_device;

static int __init vpac270_pcmcia_init(void)
{
	int ret;

	if (!machine_is_vpac270())
		return -ENODEV;

	vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	if (!vpac270_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(vpac270_pcmcia_device,
		&vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));

	if (!ret)
		ret = platform_device_add(vpac270_pcmcia_device);

	if (ret)
		platform_device_put(vpac270_pcmcia_device);

	return ret;
}

static void __exit vpac270_pcmcia_exit(void)
{
	platform_device_unregister(vpac270_pcmcia_device);
}

module_init(vpac270_pcmcia_init);
module_exit(vpac270_pcmcia_exit);

MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
MODULE_LICENSE("GPL");
Commit	Line	Data
addff0fa MV	1	/*
	2	* linux/drivers/pcmcia/pxa2xx_vpac270.c
	3	*
	4	* Driver for Voipac PXA270 PCMCIA and CF sockets
	5	*
9ed3fbf1	6	* Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.com>
addff0fa 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
158f1e95	14	#include <linux/gpio.h>
addff0fa MV	15	#include <linux/module.h>
	16	#include <linux/platform_device.h>
	17
	18	#include <asm/mach-types.h>
	19
addff0fa MV	20	#include <mach/vpac270.h>
	21
	22	#include "soc_common.h"
	23
e27af7ed	24	static struct gpio vpac270_pcmcia_gpios[] = {
e27af7ed MV	25	{ GPIO107_VPAC270_PCMCIA_PPEN, GPIOF_INIT_LOW, "PCMCIA PPEN" },
	26	{ GPIO11_VPAC270_PCMCIA_RESET, GPIOF_INIT_LOW, "PCMCIA Reset" },
	27	};
	28
	29	static struct gpio vpac270_cf_gpios[] = {
e27af7ed MV	30	{ GPIO16_VPAC270_CF_RESET, GPIOF_INIT_LOW, "CF Reset" },
	31	};
	32
addff0fa MV	33	static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	34	{
	35	int ret;
	36
	37	if (skt->nr == 0) {
e27af7ed MV	38	ret = gpio_request_array(vpac270_pcmcia_gpios,
e27af7ed MV	39	ARRAY_SIZE(vpac270_pcmcia_gpios));
addff0fa	40
a9bb5a4b RK	41	skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
	42	skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
	43	skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
	44	skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
addff0fa	45	} else {
e27af7ed MV	46	ret = gpio_request_array(vpac270_cf_gpios,
e27af7ed MV	47	ARRAY_SIZE(vpac270_cf_gpios));
addff0fa	48
a9bb5a4b RK	49	skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
	50	skt->stat[SOC_STAT_CD].name = "CF CD";
	51	skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
	52	skt->stat[SOC_STAT_RDY].name = "CF Ready";
addff0fa	53	}
e27af7ed MV	54
e27af7ed MV	55	return ret;
addff0fa MV	56	}
	57
	58	static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	59	{
e27af7ed	60	if (skt->nr == 0)
512b7938	61	gpio_free_array(vpac270_pcmcia_gpios,
e27af7ed MV	62	ARRAY_SIZE(vpac270_pcmcia_gpios));
e27af7ed MV	63	else
512b7938	64	gpio_free_array(vpac270_cf_gpios,
e27af7ed	65	ARRAY_SIZE(vpac270_cf_gpios));
addff0fa MV	66	}
	67
	68	static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	69	struct pcmcia_state *state)
	70	{
addff0fa MV	71	state->vs_3v = 1;
	72	state->vs_Xv = 0;
	73	}
	74
	75	static int
	76	vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	77	const socket_state_t *state)
	78	{
	79	if (skt->nr == 0) {
	80	gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
	81	(state->flags & SS_RESET));
	82	gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
	83	!(state->Vcc == 33 \|\| state->Vcc == 50));
	84	} else {
	85	gpio_set_value(GPIO16_VPAC270_CF_RESET,
	86	(state->flags & SS_RESET));
	87	}
	88
	89	return 0;
	90	}
	91
addff0fa MV	92	static struct pcmcia_low_level vpac270_pcmcia_ops = {
	93	.owner = THIS_MODULE,
	94
	95	.first = 0,
	96	.nr = 2,
	97
	98	.hw_init = vpac270_pcmcia_hw_init,
	99	.hw_shutdown = vpac270_pcmcia_hw_shutdown,
	100
	101	.socket_state = vpac270_pcmcia_socket_state,
	102	.configure_socket = vpac270_pcmcia_configure_socket,
addff0fa MV	103	};
	104
	105	static struct platform_device *vpac270_pcmcia_device;
	106
	107	static int __init vpac270_pcmcia_init(void)
	108	{
	109	int ret;
	110
	111	if (!machine_is_vpac270())
	112	return -ENODEV;
	113
	114	vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	115	if (!vpac270_pcmcia_device)
	116	return -ENOMEM;
	117
	118	ret = platform_device_add_data(vpac270_pcmcia_device,
	119	&vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
	120
	121	if (!ret)
	122	ret = platform_device_add(vpac270_pcmcia_device);
	123
	124	if (ret)
	125	platform_device_put(vpac270_pcmcia_device);
	126
	127	return ret;
	128	}
	129
	130	static void __exit vpac270_pcmcia_exit(void)
	131	{
	132	platform_device_unregister(vpac270_pcmcia_device);
	133	}
	134
	135	module_init(vpac270_pcmcia_init);
	136	module_exit(vpac270_pcmcia_exit);
	137
	138	MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
	139	MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
	140	MODULE_ALIAS("platform:pxa2xx-pcmcia");
	141	MODULE_LICENSE("GPL");