[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)

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->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";

	return ret;
}

static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free(GPIO_PCMCIA_RESET);
}


static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
				       struct pcmcia_state *state)
{
	state->vs_3v  = 0;
	state->vs_Xv  = 0;
}


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
87944f33 MR	25	static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
87944f33 MR	26	{
779c545d MR	27	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
	28	if (ret)
	29	return ret;
	30	gpio_direction_output(GPIO_PCMCIA_RESET, 0);
	31
a9bb5a4b RK	32	skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
	33	skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
	34	skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
	35	skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
779c545d MR	36
779c545d MR	37	return ret;
87944f33 MR	38	}
	39
	40	static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
	41	{
779c545d	42	gpio_free(GPIO_PCMCIA_RESET);
87944f33 MR	43	}
	44
	45
	46	static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	47	struct pcmcia_state *state)
	48	{
87944f33 MR	49	state->vs_3v = 0;
87944f33 MR	50	state->vs_Xv = 0;
87944f33 MR	51	}
	52
	53
	54	static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	55	const socket_state_t *state)
	56	{
87944f33 MR	57	switch (skt->nr) {
	58	case 0:
	59	if (state->flags & SS_RESET) {
779c545d	60	gpio_set_value(GPIO_PCMCIA_RESET, 1);
87944f33	61	udelay(10);
779c545d	62	gpio_set_value(GPIO_PCMCIA_RESET, 0);
87944f33 MR	63	}
	64	break;
	65	}
	66
87944f33 MR	67	return 0;
	68	}
	69
4e5e8de0	70	static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
87944f33 MR	71	.owner = THIS_MODULE,
	72	.hw_init = cmx270_pcmcia_hw_init,
	73	.hw_shutdown = cmx270_pcmcia_shutdown,
	74	.socket_state = cmx270_pcmcia_socket_state,
	75	.configure_socket = cmx270_pcmcia_configure_socket,
779c545d	76	.nr = 1,
87944f33 MR	77	};
	78
	79	static struct platform_device *cmx270_pcmcia_device;
	80
8616e2fb	81	int __init cmx270_pcmcia_init(void)
87944f33 MR	82	{
	83	int ret;
	84
	85	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	86
	87	if (!cmx270_pcmcia_device)
	88	return -ENOMEM;
	89
4e5e8de0 RK	90	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
4e5e8de0 RK	91	sizeof(cmx270_pcmcia_ops));
87944f33	92
4e5e8de0 RK	93	if (ret == 0) {
	94	printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
	95	ret = platform_device_add(cmx270_pcmcia_device);
	96	}
87944f33 MR	97
	98	if (ret)
	99	platform_device_put(cmx270_pcmcia_device);
	100
	101	return ret;
	102	}
	103
8616e2fb	104	void __exit cmx270_pcmcia_exit(void)
87944f33 MR	105	{
	106	platform_device_unregister(cmx270_pcmcia_device);
	107	}