[mirror_ubuntu-bionic-kernel.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;
	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
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;
	50	state->vs_Xv = 0;
	51	state->wrprot = 0; /* not available */
	52	}
	53
	54
	55	static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	56	const socket_state_t *state)
	57	{
87944f33 MR	58	switch (skt->nr) {
	59	case 0:
	60	if (state->flags & SS_RESET) {
779c545d	61	gpio_set_value(GPIO_PCMCIA_RESET, 1);
87944f33	62	udelay(10);
779c545d	63	gpio_set_value(GPIO_PCMCIA_RESET, 0);
87944f33 MR	64	}
	65	break;
	66	}
	67
87944f33 MR	68	return 0;
	69	}
	70
4e5e8de0	71	static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
87944f33 MR	72	.owner = THIS_MODULE,
	73	.hw_init = cmx270_pcmcia_hw_init,
	74	.hw_shutdown = cmx270_pcmcia_shutdown,
	75	.socket_state = cmx270_pcmcia_socket_state,
	76	.configure_socket = cmx270_pcmcia_configure_socket,
779c545d	77	.nr = 1,
87944f33 MR	78	};
	79
	80	static struct platform_device *cmx270_pcmcia_device;
	81
8616e2fb	82	int __init cmx270_pcmcia_init(void)
87944f33 MR	83	{
	84	int ret;
	85
	86	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	87
	88	if (!cmx270_pcmcia_device)
	89	return -ENOMEM;
	90
4e5e8de0 RK	91	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
4e5e8de0 RK	92	sizeof(cmx270_pcmcia_ops));
87944f33	93
4e5e8de0 RK	94	if (ret == 0) {
	95	printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
	96	ret = platform_device_add(cmx270_pcmcia_device);
	97	}
87944f33 MR	98
	99	if (ret)
	100	platform_device_put(cmx270_pcmcia_device);
	101
	102	return ret;
	103	}
	104
8616e2fb	105	void __exit cmx270_pcmcia_exit(void)
87944f33 MR	106	{
	107	platform_device_unregister(cmx270_pcmcia_device);
	108	}