[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / pxa2xx_cm_x270.c

/*
 * linux/drivers/pcmcia/pxa/pxa_cm_x270.c
 *
 * 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.
 *
 * Compulab Ltd., 2003, 2007, 2008
 * Mike Rapoport <mike@compulab.co.il>
 *
 */

#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <asm/mach-types.h>
#include <mach/pxa-regs.h>

#include "soc_common.h"

#define GPIO_PCMCIA_S0_CD_VALID	(84)
#define GPIO_PCMCIA_S0_RDYINT	(82)
#define GPIO_PCMCIA_RESET	(53)

#define PCMCIA_S0_CD_VALID	IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID)
#define PCMCIA_S0_RDYINT	IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT)


static struct pcmcia_irqs irqs[] = {
	{ 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
};

static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	if (ret)
		return ret;
	gpio_direction_output(GPIO_PCMCIA_RESET, 0);

	skt->irq = PCMCIA_S0_RDYINT;
	ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	if (!ret)
		gpio_free(GPIO_PCMCIA_RESET);

	return ret;
}

static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
	gpio_free(GPIO_PCMCIA_RESET);
}


static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
				       struct pcmcia_state *state)
{
	state->detect = (gpio_get_value(GPIO_PCMCIA_S0_CD_VALID) == 0) ? 1 : 0;
	state->ready  = (gpio_get_value(GPIO_PCMCIA_S0_RDYINT) == 0) ? 0 : 1;
	state->bvd1   = 1;
	state->bvd2   = 1;
	state->vs_3v  = 0;
	state->vs_Xv  = 0;
	state->wrprot = 0;  /* not available */
}


static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
					  const socket_state_t *state)
{
	switch (skt->nr) {
	case 0:
		if (state->flags & SS_RESET) {
			gpio_set_value(GPIO_PCMCIA_RESET, 1);
			udelay(10);
			gpio_set_value(GPIO_PCMCIA_RESET, 0);
		}
		break;
	}

	return 0;
}

static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
}

static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
}


static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
	.owner			= THIS_MODULE,
	.hw_init		= cmx270_pcmcia_hw_init,
	.hw_shutdown		= cmx270_pcmcia_shutdown,
	.socket_state		= cmx270_pcmcia_socket_state,
	.configure_socket	= cmx270_pcmcia_configure_socket,
	.socket_init		= cmx270_pcmcia_socket_init,
	.socket_suspend		= cmx270_pcmcia_socket_suspend,
	.nr			= 1,
};

static struct platform_device *cmx270_pcmcia_device;

int __init cmx270_pcmcia_init(void)
{
	int ret;

	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);

	if (!cmx270_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
				       sizeof(cmx270_pcmcia_ops));

	if (ret == 0) {
		printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
		ret = platform_device_add(cmx270_pcmcia_device);
	}

	if (ret)
		platform_device_put(cmx270_pcmcia_device);

	return ret;
}

void __exit cmx270_pcmcia_exit(void)
{
	platform_device_unregister(cmx270_pcmcia_device);
}
Commit	Line	Data
87944f33 MR	1	/*
	2	* linux/drivers/pcmcia/pxa/pxa_cm_x270.c
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
779c545d	8	* Compulab Ltd., 2003, 2007, 2008
87944f33 MR	9	* Mike Rapoport <mike@compulab.co.il>
	10	*
	11	*/
	12
87944f33 MR	13	#include <linux/platform_device.h>
	14	#include <linux/irq.h>
	15	#include <linux/delay.h>
779c545d	16	#include <linux/gpio.h>
87944f33	17
04ba0f65	18	#include <asm/mach-types.h>
a09e64fb	19	#include <mach/pxa-regs.h>
87944f33 MR	20
	21	#include "soc_common.h"
	22
779c545d MR	23	#define GPIO_PCMCIA_S0_CD_VALID (84)
	24	#define GPIO_PCMCIA_S0_RDYINT (82)
	25	#define GPIO_PCMCIA_RESET (53)
	26
	27	#define PCMCIA_S0_CD_VALID IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID)
	28	#define PCMCIA_S0_RDYINT IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT)
	29
	30
87944f33 MR	31	static struct pcmcia_irqs irqs[] = {
87944f33 MR	32	{ 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" },
87944f33 MR	33	};
	34
	35	static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	36	{
779c545d MR	37	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	38	if (ret)
	39	return ret;
	40	gpio_direction_output(GPIO_PCMCIA_RESET, 0);
	41
	42	skt->irq = PCMCIA_S0_RDYINT;
	43	ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	44	if (!ret)
	45	gpio_free(GPIO_PCMCIA_RESET);
	46
	47	return ret;
87944f33 MR	48	}
	49
	50	static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
	51	{
	52	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
779c545d	53	gpio_free(GPIO_PCMCIA_RESET);
87944f33 MR	54	}
	55
	56
	57	static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	58	struct pcmcia_state *state)
	59	{
779c545d MR	60	state->detect = (gpio_get_value(GPIO_PCMCIA_S0_CD_VALID) == 0) ? 1 : 0;
779c545d MR	61	state->ready = (gpio_get_value(GPIO_PCMCIA_S0_RDYINT) == 0) ? 0 : 1;
87944f33 MR	62	state->bvd1 = 1;
	63	state->bvd2 = 1;
	64	state->vs_3v = 0;
	65	state->vs_Xv = 0;
	66	state->wrprot = 0; /* not available */
	67	}
	68
	69
	70	static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	71	const socket_state_t *state)
	72	{
87944f33 MR	73	switch (skt->nr) {
	74	case 0:
	75	if (state->flags & SS_RESET) {
779c545d	76	gpio_set_value(GPIO_PCMCIA_RESET, 1);
87944f33	77	udelay(10);
779c545d	78	gpio_set_value(GPIO_PCMCIA_RESET, 0);
87944f33 MR	79	}
	80	break;
	81	}
	82
87944f33 MR	83	return 0;
	84	}
	85
	86	static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	87	{
	88	}
	89
	90	static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	91	{
	92	}
	93
	94
4e5e8de0	95	static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
87944f33 MR	96	.owner = THIS_MODULE,
	97	.hw_init = cmx270_pcmcia_hw_init,
	98	.hw_shutdown = cmx270_pcmcia_shutdown,
	99	.socket_state = cmx270_pcmcia_socket_state,
	100	.configure_socket = cmx270_pcmcia_configure_socket,
	101	.socket_init = cmx270_pcmcia_socket_init,
	102	.socket_suspend = cmx270_pcmcia_socket_suspend,
779c545d	103	.nr = 1,
87944f33 MR	104	};
	105
	106	static struct platform_device *cmx270_pcmcia_device;
	107
8616e2fb	108	int __init cmx270_pcmcia_init(void)
87944f33 MR	109	{
	110	int ret;
	111
	112	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	113
	114	if (!cmx270_pcmcia_device)
	115	return -ENOMEM;
	116
4e5e8de0 RK	117	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
4e5e8de0 RK	118	sizeof(cmx270_pcmcia_ops));
87944f33	119
4e5e8de0 RK	120	if (ret == 0) {
	121	printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
	122	ret = platform_device_add(cmx270_pcmcia_device);
	123	}
87944f33 MR	124
	125	if (ret)
	126	platform_device_put(cmx270_pcmcia_device);
	127
	128	return ret;
	129	}
	130
8616e2fb	131	void __exit cmx270_pcmcia_exit(void)
87944f33 MR	132	{
	133	platform_device_unregister(cmx270_pcmcia_device);
	134	}