[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / pxa2xx_e740.c

/*
 * Toshiba e740 PCMCIA specific routines.
 *
 * (c) 2004 Ian Molton <spyro@f2s.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/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>

#include <mach/eseries-gpio.h>

#include <asm/irq.h>
#include <asm/mach-types.h>

#include "soc_common.h"

static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	if (skt->nr == 0) {
		skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD0;
		skt->stat[SOC_STAT_CD].name = "CF card detect";
		skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY0;
		skt->stat[SOC_STAT_RDY].name = "CF ready";
	} else {
		skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD1;
		skt->stat[SOC_STAT_CD].name = "Wifi switch";
		skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY1;
		skt->stat[SOC_STAT_RDY].name = "Wifi ready";
	}

	return 0;
}

static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	state->vs_3v  = 1;
	state->vs_Xv  = 0;
}

static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
					const socket_state_t *state)
{
	if (state->flags & SS_RESET) {
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
		else
			gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
	} else {
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
		else
			gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
	}

	switch (state->Vcc) {
	case 0:	/* Socket off */
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
		else
			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
		break;
	case 50:
	case 33: /* socket on */
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
		else
			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
		break;
	default:
		printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
	}

	return 0;
}

static struct pcmcia_low_level e740_pcmcia_ops = {
	.owner            = THIS_MODULE,
	.hw_init          = e740_pcmcia_hw_init,
	.socket_state     = e740_pcmcia_socket_state,
	.configure_socket = e740_pcmcia_configure_socket,
	.nr               = 2,
};

static struct platform_device *e740_pcmcia_device;

static int __init e740_pcmcia_init(void)
{
	int ret;

	if (!machine_is_e740())
		return -ENODEV;

	e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	if (!e740_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
					sizeof(e740_pcmcia_ops));

	if (!ret)
		ret = platform_device_add(e740_pcmcia_device);

	if (ret)
		platform_device_put(e740_pcmcia_device);

	return ret;
}

static void __exit e740_pcmcia_exit(void)
{
	platform_device_unregister(e740_pcmcia_device);
}

module_init(e740_pcmcia_init);
module_exit(e740_pcmcia_exit);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
MODULE_DESCRIPTION("e740 PCMCIA platform support");
Commit	Line	Data
e38a9707 IM	1	/*
	2	* Toshiba e740 PCMCIA specific routines.
	3	*
	4	* (c) 2004 Ian Molton <spyro@f2s.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/init.h>
	12	#include <linux/module.h>
	13	#include <linux/kernel.h>
	14	#include <linux/errno.h>
	15	#include <linux/gpio.h>
	16	#include <linux/interrupt.h>
	17	#include <linux/platform_device.h>
	18
e38a9707 IM	19	#include <mach/eseries-gpio.h>
	20
	21	#include <asm/irq.h>
	22	#include <asm/mach-types.h>
	23
	24	#include "soc_common.h"
	25
e38a9707 IM	26	static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
e38a9707 IM	27	{
a9bb5a4b RK	28	if (skt->nr == 0) {
	29	skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD0;
	30	skt->stat[SOC_STAT_CD].name = "CF card detect";
	31	skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY0;
	32	skt->stat[SOC_STAT_RDY].name = "CF ready";
	33	} else {
	34	skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD1;
	35	skt->stat[SOC_STAT_CD].name = "Wifi switch";
	36	skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY1;
	37	skt->stat[SOC_STAT_RDY].name = "Wifi ready";
	38	}
e38a9707	39
a9bb5a4b	40	return 0;
e38a9707 IM	41	}
	42
	43	static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	44	struct pcmcia_state *state)
	45	{
e38a9707	46	state->vs_3v = 1;
e38a9707 IM	47	state->vs_Xv = 0;
	48	}
	49
	50	static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	51	const socket_state_t *state)
	52	{
	53	if (state->flags & SS_RESET) {
	54	if (skt->nr == 0)
	55	gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
	56	else
	57	gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
	58	} else {
	59	if (skt->nr == 0)
	60	gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
	61	else
	62	gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
	63	}
	64
	65	switch (state->Vcc) {
	66	case 0: /* Socket off */
	67	if (skt->nr == 0)
	68	gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
	69	else
	70	gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
	71	break;
	72	case 50:
	73	case 33: /* socket on */
	74	if (skt->nr == 0)
	75	gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
	76	else
	77	gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
	78	break;
	79	default:
	80	printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
	81	}
	82
	83	return 0;
	84	}
	85
e38a9707 IM	86	static struct pcmcia_low_level e740_pcmcia_ops = {
	87	.owner = THIS_MODULE,
	88	.hw_init = e740_pcmcia_hw_init,
e38a9707 IM	89	.socket_state = e740_pcmcia_socket_state,
e38a9707 IM	90	.configure_socket = e740_pcmcia_configure_socket,
e38a9707 IM	91	.nr = 2,
	92	};
	93
	94	static struct platform_device *e740_pcmcia_device;
	95
	96	static int __init e740_pcmcia_init(void)
	97	{
	98	int ret;
	99
	100	if (!machine_is_e740())
	101	return -ENODEV;
	102
	103	e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	104	if (!e740_pcmcia_device)
	105	return -ENOMEM;
	106
	107	ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
	108	sizeof(e740_pcmcia_ops));
	109
	110	if (!ret)
	111	ret = platform_device_add(e740_pcmcia_device);
	112
	113	if (ret)
	114	platform_device_put(e740_pcmcia_device);
	115
	116	return ret;
	117	}
	118
	119	static void __exit e740_pcmcia_exit(void)
	120	{
	121	platform_device_unregister(e740_pcmcia_device);
	122	}
	123
	124	module_init(e740_pcmcia_init);
	125	module_exit(e740_pcmcia_exit);
	126
	127	MODULE_LICENSE("GPL v2");
	128	MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
	129	MODULE_ALIAS("platform:pxa2xx-pcmcia");
	130	MODULE_DESCRIPTION("e740 PCMCIA platform support");