[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 <linux/export.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	gpio_to_irq(GPIO_PCMCIA_S0_CD_VALID)
#define PCMCIA_S0_RDYINT	gpio_to_irq(GPIO_PCMCIA_S0_RDYINT)


static struct pcmcia_irqs irqs[] = {
	{ .sock = 0, .str = "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->socket.pci_irq = PCMCIA_S0_RDYINT;
	irqs[0].irq = PCMCIA_S0_CD_VALID;
	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 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,
	.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>
402b20de	17	#include <linux/export.h>
87944f33	18
87944f33 MR	19	#include "soc_common.h"
87944f33 MR	20
779c545d MR	21	#define GPIO_PCMCIA_S0_CD_VALID (84)
	22	#define GPIO_PCMCIA_S0_RDYINT (82)
	23	#define GPIO_PCMCIA_RESET (53)
	24
951c486f HZ	25	#define PCMCIA_S0_CD_VALID gpio_to_irq(GPIO_PCMCIA_S0_CD_VALID)
951c486f HZ	26	#define PCMCIA_S0_RDYINT gpio_to_irq(GPIO_PCMCIA_S0_RDYINT)
779c545d MR	27
779c545d MR	28
87944f33	29	static struct pcmcia_irqs irqs[] = {
951c486f	30	{ .sock = 0, .str = "PCMCIA0 CD" },
87944f33 MR	31	};
	32
	33	static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	34	{
779c545d MR	35	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	36	if (ret)
	37	return ret;
	38	gpio_direction_output(GPIO_PCMCIA_RESET, 0);
	39
66024db5	40	skt->socket.pci_irq = PCMCIA_S0_RDYINT;
951c486f	41	irqs[0].irq = PCMCIA_S0_CD_VALID;
779c545d MR	42	ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	43	if (!ret)
	44	gpio_free(GPIO_PCMCIA_RESET);
	45
	46	return ret;
87944f33 MR	47	}
	48
	49	static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
	50	{
	51	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
779c545d	52	gpio_free(GPIO_PCMCIA_RESET);
87944f33 MR	53	}
	54
	55
	56	static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	57	struct pcmcia_state *state)
	58	{
779c545d MR	59	state->detect = (gpio_get_value(GPIO_PCMCIA_S0_CD_VALID) == 0) ? 1 : 0;
779c545d MR	60	state->ready = (gpio_get_value(GPIO_PCMCIA_S0_RDYINT) == 0) ? 0 : 1;
87944f33 MR	61	state->bvd1 = 1;
	62	state->bvd2 = 1;
	63	state->vs_3v = 0;
	64	state->vs_Xv = 0;
	65	state->wrprot = 0; /* not available */
	66	}
	67
	68
	69	static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	70	const socket_state_t *state)
	71	{
87944f33 MR	72	switch (skt->nr) {
	73	case 0:
	74	if (state->flags & SS_RESET) {
779c545d	75	gpio_set_value(GPIO_PCMCIA_RESET, 1);
87944f33	76	udelay(10);
779c545d	77	gpio_set_value(GPIO_PCMCIA_RESET, 0);
87944f33 MR	78	}
	79	break;
	80	}
	81
87944f33 MR	82	return 0;
	83	}
	84
4e5e8de0	85	static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
87944f33 MR	86	.owner = THIS_MODULE,
	87	.hw_init = cmx270_pcmcia_hw_init,
	88	.hw_shutdown = cmx270_pcmcia_shutdown,
	89	.socket_state = cmx270_pcmcia_socket_state,
	90	.configure_socket = cmx270_pcmcia_configure_socket,
779c545d	91	.nr = 1,
87944f33 MR	92	};
	93
	94	static struct platform_device *cmx270_pcmcia_device;
	95
8616e2fb	96	int __init cmx270_pcmcia_init(void)
87944f33 MR	97	{
	98	int ret;
	99
	100	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	101
	102	if (!cmx270_pcmcia_device)
	103	return -ENOMEM;
	104
4e5e8de0 RK	105	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
4e5e8de0 RK	106	sizeof(cmx270_pcmcia_ops));
87944f33	107
4e5e8de0 RK	108	if (ret == 0) {
	109	printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
	110	ret = platform_device_add(cmx270_pcmcia_device);
	111	}
87944f33 MR	112
	113	if (ret)
	114	platform_device_put(cmx270_pcmcia_device);
	115
	116	return ret;
	117	}
	118
8616e2fb	119	void __exit cmx270_pcmcia_exit(void)
87944f33 MR	120	{
	121	platform_device_unregister(cmx270_pcmcia_device);
	122	}