2010-08-11 03:32:53 +02:00
										 
									 
								 
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								/*
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								 * linux/drivers/pcmcia/pxa2xx_colibri.c
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								 *
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								 * Driver for Toradex Colibri PXA270 CF socket
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								 *
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								 * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
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								 *
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								 * This program is free software; you can redistribute it and/or modify
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								 * it under the terms of the GNU General Public License version 2 as
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								 * published by the Free Software Foundation.
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								 *
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								 */
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								#include <linux/module.h>
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								#include <linux/platform_device.h>
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								#include <linux/delay.h>
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								#include <linux/gpio.h>
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								#include <asm/mach-types.h>
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								#include "soc_common.h"
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								#define	COLIBRI270_RESET_GPIO	53
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								#define	COLIBRI270_PPEN_GPIO	107
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								#define	COLIBRI270_BVD1_GPIO	83
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								#define	COLIBRI270_BVD2_GPIO	82
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								#define	COLIBRI270_DETECT_GPIO	84
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								#define	COLIBRI270_READY_GPIO	1
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											2010-08-11 05:04:53 +02:00
										 
									 
								 
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								#define	COLIBRI320_RESET_GPIO	77
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								#define	COLIBRI320_PPEN_GPIO	57
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								#define	COLIBRI320_BVD1_GPIO	53
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								#define	COLIBRI320_BVD2_GPIO	79
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								#define	COLIBRI320_DETECT_GPIO	81
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								#define	COLIBRI320_READY_GPIO	29
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								enum {
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									DETECT = 0,
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									READY = 1,
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									BVD1 = 2,
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									BVD2 = 3,
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									PPEN = 4,
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									RESET = 5,
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								};
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								/* Contents of this array are configured on-the-fly in init function */
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								static struct gpio colibri_pcmcia_gpios[] = {
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									{ 0,	GPIOF_IN,	"PCMCIA Detect" },
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									{ 0,	GPIOF_IN,	"PCMCIA Ready" },
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									{ 0,	GPIOF_IN,	"PCMCIA BVD1" },
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									{ 0,	GPIOF_IN,	"PCMCIA BVD2" },
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									{ 0,	GPIOF_INIT_LOW,	"PCMCIA PPEN" },
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									{ 0,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
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								};
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								static int colibri_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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								{
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									int ret;
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									ret = gpio_request_array(colibri_pcmcia_gpios,
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												ARRAY_SIZE(colibri_pcmcia_gpios));
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									if (ret)
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										goto err1;
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									skt->socket.pci_irq = gpio_to_irq(colibri_pcmcia_gpios[READY].gpio);
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											2012-01-13 22:56:32 +00:00
										 
									 
								 
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									skt->stat[SOC_STAT_CD].irq = gpio_to_irq(colibri_pcmcia_gpios[DETECT].gpio);
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									skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
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								err1:
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									return ret;
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								}
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								static void colibri_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
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								{
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									gpio_free_array(colibri_pcmcia_gpios,
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											ARRAY_SIZE(colibri_pcmcia_gpios));
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								}
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								static void colibri_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
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													struct pcmcia_state *state)
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								{
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									state->detect = !!gpio_get_value(colibri_pcmcia_gpios[DETECT].gpio);
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									state->ready  = !!gpio_get_value(colibri_pcmcia_gpios[READY].gpio);
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									state->bvd1   = !!gpio_get_value(colibri_pcmcia_gpios[BVD1].gpio);
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									state->bvd2   = !!gpio_get_value(colibri_pcmcia_gpios[BVD2].gpio);
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									state->vs_3v  = 1;
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									state->vs_Xv  = 0;
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								}
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								static int
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								colibri_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
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												const socket_state_t *state)
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								{
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									gpio_set_value(colibri_pcmcia_gpios[PPEN].gpio,
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											!(state->Vcc == 33 && state->Vpp < 50));
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									gpio_set_value(colibri_pcmcia_gpios[RESET].gpio,
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											state->flags & SS_RESET);
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									return 0;
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								}
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								static struct pcmcia_low_level colibri_pcmcia_ops = {
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									.owner			= THIS_MODULE,
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									.first			= 0,
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									.nr			= 1,
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									.hw_init		= colibri_pcmcia_hw_init,
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									.hw_shutdown		= colibri_pcmcia_hw_shutdown,
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									.socket_state		= colibri_pcmcia_socket_state,
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									.configure_socket	= colibri_pcmcia_configure_socket,
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								};
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								static struct platform_device *colibri_pcmcia_device;
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								static int __init colibri_pcmcia_init(void)
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								{
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									int ret;
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											2011-02-23 02:30:28 +03:00
										 
									 
								 
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									if (!machine_is_colibri() && !machine_is_colibri320())
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										return -ENODEV;
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									colibri_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
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									if (!colibri_pcmcia_device)
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										return -ENOMEM;
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									/* Colibri PXA270 */
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									if (machine_is_colibri()) {
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										colibri_pcmcia_gpios[RESET].gpio	= COLIBRI270_RESET_GPIO;
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										colibri_pcmcia_gpios[PPEN].gpio		= COLIBRI270_PPEN_GPIO;
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										colibri_pcmcia_gpios[BVD1].gpio		= COLIBRI270_BVD1_GPIO;
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										colibri_pcmcia_gpios[BVD2].gpio		= COLIBRI270_BVD2_GPIO;
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										colibri_pcmcia_gpios[DETECT].gpio	= COLIBRI270_DETECT_GPIO;
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										colibri_pcmcia_gpios[READY].gpio	= COLIBRI270_READY_GPIO;
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									/* Colibri PXA320 */
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									} else if (machine_is_colibri320()) {
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										colibri_pcmcia_gpios[RESET].gpio	= COLIBRI320_RESET_GPIO;
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										colibri_pcmcia_gpios[PPEN].gpio		= COLIBRI320_PPEN_GPIO;
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										colibri_pcmcia_gpios[BVD1].gpio		= COLIBRI320_BVD1_GPIO;
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										colibri_pcmcia_gpios[BVD2].gpio		= COLIBRI320_BVD2_GPIO;
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										colibri_pcmcia_gpios[DETECT].gpio	= COLIBRI320_DETECT_GPIO;
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										colibri_pcmcia_gpios[READY].gpio	= COLIBRI320_READY_GPIO;
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									}
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									ret = platform_device_add_data(colibri_pcmcia_device,
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										&colibri_pcmcia_ops, sizeof(colibri_pcmcia_ops));
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									if (!ret)
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										ret = platform_device_add(colibri_pcmcia_device);
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									if (ret)
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										platform_device_put(colibri_pcmcia_device);
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									return ret;
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								}
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								static void __exit colibri_pcmcia_exit(void)
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								{
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									platform_device_unregister(colibri_pcmcia_device);
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								}
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								module_init(colibri_pcmcia_init);
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							 | 
							
							
								module_exit(colibri_pcmcia_exit);
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							 | 
							
							
								MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
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											2010-08-11 05:04:53 +02:00
										 
									 
								 
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							 | 
							
								
							 | 
							
							
								MODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270/PXA320");
							 | 
						
					
						
							
								
									
										
										
										
											2010-08-11 03:32:53 +02:00
										 
									 
								 
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							 | 
							
								
							 | 
							
							
								MODULE_ALIAS("platform:pxa2xx-pcmcia");
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
							
								MODULE_LICENSE("GPL");
							 |