[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 struct pcmcia_irqs cd_irqs[] = {
	{
		.sock = 0,
		.str  = "CF card detect"
	},
	{
		.sock = 1,
		.str  = "Wifi switch"
	},
};

static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	if (skt->nr == 0)
		skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY0);
	else
		skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY1);

	cd_irqs[0].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD0);
	cd_irqs[1].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD1);

	return soc_pcmcia_request_irqs(skt, &cd_irqs[skt->nr], 1);
}

/*
 * Release all resources.
 */
static void e740_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_free_irqs(skt, &cd_irqs[skt->nr], 1);
}

static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	if (skt->nr == 0) {
		state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD0) ? 0 : 1;
		state->ready  = gpio_get_value(GPIO_E740_PCMCIA_RDY0) ? 1 : 0;
	} else {
		state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD1) ? 0 : 1;
		state->ready  = gpio_get_value(GPIO_E740_PCMCIA_RDY1) ? 1 : 0;
	}

	state->vs_3v  = 1;
	state->bvd1   = 1;
	state->bvd2   = 1;
	state->wrprot = 0;
	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;
}

/*
 * Enable card status IRQs on (re-)initialisation.  This can
 * be called at initialisation, power management event, or
 * pcmcia event.
 */
static void e740_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_enable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
}

/*
 * Disable card status IRQs on suspend.
 */
static void e740_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_disable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
}

static struct pcmcia_low_level e740_pcmcia_ops = {
	.owner            = THIS_MODULE,
	.hw_init          = e740_pcmcia_hw_init,
	.hw_shutdown      = e740_pcmcia_hw_shutdown,
	.socket_state     = e740_pcmcia_socket_state,
	.configure_socket = e740_pcmcia_configure_socket,
	.socket_init      = e740_pcmcia_socket_init,
	.socket_suspend   = e740_pcmcia_socket_suspend,
	.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
	26	static struct pcmcia_irqs cd_irqs[] = {
	27	{
	28	.sock = 0,
e38a9707 IM	29	.str = "CF card detect"
	30	},
	31	{
	32	.sock = 1,
e38a9707 IM	33	.str = "Wifi switch"
	34	},
	35	};
	36
	37	static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	38	{
34641de2 AL	39	if (skt->nr == 0)
	40	skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY0);
	41	else
	42	skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY1);
	43
	44	cd_irqs[0].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD0);
	45	cd_irqs[1].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD1);
e38a9707 IM	46
	47	return soc_pcmcia_request_irqs(skt, &cd_irqs[skt->nr], 1);
	48	}
	49
	50	/*
	51	* Release all resources.
	52	*/
	53	static void e740_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	54	{
	55	soc_pcmcia_free_irqs(skt, &cd_irqs[skt->nr], 1);
	56	}
	57
	58	static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	59	struct pcmcia_state *state)
	60	{
	61	if (skt->nr == 0) {
	62	state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD0) ? 0 : 1;
	63	state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY0) ? 1 : 0;
	64	} else {
	65	state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD1) ? 0 : 1;
	66	state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY1) ? 1 : 0;
	67	}
	68
	69	state->vs_3v = 1;
	70	state->bvd1 = 1;
	71	state->bvd2 = 1;
	72	state->wrprot = 0;
	73	state->vs_Xv = 0;
	74	}
	75
	76	static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	77	const socket_state_t *state)
	78	{
	79	if (state->flags & SS_RESET) {
	80	if (skt->nr == 0)
	81	gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
	82	else
	83	gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
	84	} else {
	85	if (skt->nr == 0)
	86	gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
	87	else
	88	gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
	89	}
	90
	91	switch (state->Vcc) {
	92	case 0: /* Socket off */
	93	if (skt->nr == 0)
	94	gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
	95	else
	96	gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
	97	break;
	98	case 50:
	99	case 33: /* socket on */
	100	if (skt->nr == 0)
	101	gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
	102	else
	103	gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
	104	break;
	105	default:
	106	printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
	107	}
	108
	109	return 0;
110	}
111
112	/*
113	* Enable card status IRQs on (re-)initialisation. This can
114	* be called at initialisation, power management event, or
115	* pcmcia event.
116	*/
117	static void e740_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
118	{
119	soc_pcmcia_enable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
120	}
121
122	/*
123	* Disable card status IRQs on suspend.
124	*/
125	static void e740_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
126	{
127	soc_pcmcia_disable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
128	}
129
130	static struct pcmcia_low_level e740_pcmcia_ops = {
131	.owner = THIS_MODULE,
132	.hw_init = e740_pcmcia_hw_init,
133	.hw_shutdown = e740_pcmcia_hw_shutdown,
134	.socket_state = e740_pcmcia_socket_state,
135	.configure_socket = e740_pcmcia_configure_socket,
136	.socket_init = e740_pcmcia_socket_init,
137	.socket_suspend = e740_pcmcia_socket_suspend,
138	.nr = 2,
139	};
140
141	static struct platform_device *e740_pcmcia_device;
142
143	static int __init e740_pcmcia_init(void)
144	{
145	int ret;
146
147	if (!machine_is_e740())
148	return -ENODEV;
149
150	e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
151	if (!e740_pcmcia_device)
152	return -ENOMEM;
153
154	ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
155	sizeof(e740_pcmcia_ops));
156
157	if (!ret)
158	ret = platform_device_add(e740_pcmcia_device);
159
160	if (ret)
161	platform_device_put(e740_pcmcia_device);
162
163	return ret;
164	}
165
166	static void __exit e740_pcmcia_exit(void)
167	{
168	platform_device_unregister(e740_pcmcia_device);
169	}
170
171	module_init(e740_pcmcia_init);
172	module_exit(e740_pcmcia_exit);
173
174	MODULE_LICENSE("GPL v2");
175	MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
176	MODULE_ALIAS("platform:pxa2xx-pcmcia");
177	MODULE_DESCRIPTION("e740 PCMCIA platform support");