[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / pxa2xx_cm_x255.c

/*
 * linux/drivers/pcmcia/pxa/pxa_cm_x255.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_SKTSEL	(54)
#define GPIO_PCMCIA_S0_CD_VALID	(16)
#define GPIO_PCMCIA_S1_CD_VALID	(17)
#define GPIO_PCMCIA_S0_RDYINT	(6)
#define GPIO_PCMCIA_S1_RDYINT	(8)
#define GPIO_PCMCIA_RESET	(9)

static int cmx255_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);

	if (skt->nr == 0) {
		skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
		skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
		skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
	} else {
		skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID;
		skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD";
		skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY";
	}

	return 0;
}

static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free(GPIO_PCMCIA_RESET);
}


static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
				       struct pcmcia_state *state)
{
	state->vs_3v  = 0;
	state->vs_Xv  = 0;
}


static int cmx255_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_SKTSEL, 0);
			udelay(1);
			gpio_set_value(GPIO_PCMCIA_RESET, 1);
			udelay(10);
			gpio_set_value(GPIO_PCMCIA_RESET, 0);
		}
		break;
	case 1:
		if (state->flags & SS_RESET) {
			gpio_set_value(GPIO_PCMCIA_SKTSEL, 1);
			udelay(1);
			gpio_set_value(GPIO_PCMCIA_RESET, 1);
			udelay(10);
			gpio_set_value(GPIO_PCMCIA_RESET, 0);
		}
		break;
	}

	return 0;
}

static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = {
	.owner			= THIS_MODULE,
	.hw_init		= cmx255_pcmcia_hw_init,
	.hw_shutdown		= cmx255_pcmcia_shutdown,
	.socket_state		= cmx255_pcmcia_socket_state,
	.configure_socket	= cmx255_pcmcia_configure_socket,
	.nr			= 1,
};

static struct platform_device *cmx255_pcmcia_device;

int __init cmx255_pcmcia_init(void)
{
	int ret;

	cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);

	if (!cmx255_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops,
				       sizeof(cmx255_pcmcia_ops));

	if (ret == 0) {
		printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n");
		ret = platform_device_add(cmx255_pcmcia_device);
	}

	if (ret)
		platform_device_put(cmx255_pcmcia_device);

	return ret;
}

void __exit cmx255_pcmcia_exit(void)
{
	platform_device_unregister(cmx255_pcmcia_device);
}
Commit	Line	Data
8616e2fb MR	1	/*
	2	* linux/drivers/pcmcia/pxa/pxa_cm_x255.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	*
	8	* Compulab Ltd., 2003, 2007, 2008
	9	* Mike Rapoport <mike@compulab.co.il>
	10	*
	11	*/
	12
	13	#include <linux/platform_device.h>
	14	#include <linux/irq.h>
	15	#include <linux/delay.h>
	16	#include <linux/gpio.h>
402b20de	17	#include <linux/export.h>
8616e2fb	18
8616e2fb MR	19	#include "soc_common.h"
	20
	21	#define GPIO_PCMCIA_SKTSEL (54)
	22	#define GPIO_PCMCIA_S0_CD_VALID (16)
	23	#define GPIO_PCMCIA_S1_CD_VALID (17)
	24	#define GPIO_PCMCIA_S0_RDYINT (6)
	25	#define GPIO_PCMCIA_S1_RDYINT (8)
	26	#define GPIO_PCMCIA_RESET (9)
	27
8616e2fb MR	28	static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	29	{
	30	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	31	if (ret)
	32	return ret;
	33	gpio_direction_output(GPIO_PCMCIA_RESET, 0);
	34
a9bb5a4b RK	35	if (skt->nr == 0) {
	36	skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
	37	skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
	38	skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
	39	skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
	40	} else {
	41	skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID;
	42	skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD";
	43	skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT;
	44	skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY";
	45	}
8616e2fb	46
a9bb5a4b	47	return 0;
8616e2fb MR	48	}
	49
	50	static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
	51	{
8616e2fb MR	52	gpio_free(GPIO_PCMCIA_RESET);
	53	}
	54
	55
	56	static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	57	struct pcmcia_state *state)
	58	{
8616e2fb MR	59	state->vs_3v = 0;
8616e2fb MR	60	state->vs_Xv = 0;
8616e2fb MR	61	}
	62
	63
	64	static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	65	const socket_state_t *state)
	66	{
	67	switch (skt->nr) {
	68	case 0:
	69	if (state->flags & SS_RESET) {
	70	gpio_set_value(GPIO_PCMCIA_SKTSEL, 0);
	71	udelay(1);
	72	gpio_set_value(GPIO_PCMCIA_RESET, 1);
	73	udelay(10);
	74	gpio_set_value(GPIO_PCMCIA_RESET, 0);
	75	}
	76	break;
	77	case 1:
	78	if (state->flags & SS_RESET) {
	79	gpio_set_value(GPIO_PCMCIA_SKTSEL, 1);
	80	udelay(1);
	81	gpio_set_value(GPIO_PCMCIA_RESET, 1);
	82	udelay(10);
	83	gpio_set_value(GPIO_PCMCIA_RESET, 0);
	84	}
	85	break;
	86	}
	87
	88	return 0;
	89	}
	90
8616e2fb MR	91	static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = {
	92	.owner = THIS_MODULE,
	93	.hw_init = cmx255_pcmcia_hw_init,
	94	.hw_shutdown = cmx255_pcmcia_shutdown,
	95	.socket_state = cmx255_pcmcia_socket_state,
	96	.configure_socket = cmx255_pcmcia_configure_socket,
8616e2fb MR	97	.nr = 1,
	98	};
	99
	100	static struct platform_device *cmx255_pcmcia_device;
	101
	102	int __init cmx255_pcmcia_init(void)
	103	{
	104	int ret;
	105
	106	cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	107
	108	if (!cmx255_pcmcia_device)
	109	return -ENOMEM;
	110
	111	ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops,
	112	sizeof(cmx255_pcmcia_ops));
	113
	114	if (ret == 0) {
	115	printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n");
	116	ret = platform_device_add(cmx255_pcmcia_device);
	117	}
	118
	119	if (ret)
	120	platform_device_put(cmx255_pcmcia_device);
	121
	122	return ret;
	123	}
	124
	125	void __exit cmx255_pcmcia_exit(void)
	126	{
	127	platform_device_unregister(cmx255_pcmcia_device);
	128	}