1960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut/* 2960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * linux/drivers/pcmcia/pxa2xx_colibri.c 3960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * 4960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * Driver for Toradex Colibri PXA270 CF socket 5960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * 6960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com> 7960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * 8960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * This program is free software; you can redistribute it and/or modify 9960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * it under the terms of the GNU General Public License version 2 as 10960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * published by the Free Software Foundation. 11960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut * 12960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut */ 13960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 14960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#include <linux/module.h> 15960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#include <linux/platform_device.h> 16960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#include <linux/delay.h> 17960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#include <linux/gpio.h> 18960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 19960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#include <asm/mach-types.h> 20960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 21960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#include "soc_common.h" 22960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 23960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#define COLIBRI270_RESET_GPIO 53 24960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#define COLIBRI270_PPEN_GPIO 107 25960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#define COLIBRI270_BVD1_GPIO 83 26960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#define COLIBRI270_BVD2_GPIO 82 27960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#define COLIBRI270_DETECT_GPIO 84 28960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut#define COLIBRI270_READY_GPIO 1 29960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 30fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut#define COLIBRI320_RESET_GPIO 77 31fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut#define COLIBRI320_PPEN_GPIO 57 32fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut#define COLIBRI320_BVD1_GPIO 53 33fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut#define COLIBRI320_BVD2_GPIO 79 34fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut#define COLIBRI320_DETECT_GPIO 81 35fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut#define COLIBRI320_READY_GPIO 29 36fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut 37e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasutenum { 38e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut DETECT = 0, 39e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut READY = 1, 40e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut BVD1 = 2, 41e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut BVD2 = 3, 42e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut PPEN = 4, 43e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut RESET = 5, 44e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut}; 45e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut 46e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut/* Contents of this array are configured on-the-fly in init function */ 47e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasutstatic struct gpio colibri_pcmcia_gpios[] = { 48e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut { 0, GPIOF_IN, "PCMCIA Detect" }, 49e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut { 0, GPIOF_IN, "PCMCIA Ready" }, 50e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut { 0, GPIOF_IN, "PCMCIA BVD1" }, 51e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut { 0, GPIOF_IN, "PCMCIA BVD2" }, 52e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut { 0, GPIOF_INIT_LOW, "PCMCIA PPEN" }, 53e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut { 0, GPIOF_INIT_HIGH,"PCMCIA Reset" }, 54e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut}; 55960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 56960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic int colibri_pcmcia_hw_init(struct soc_pcmcia_socket *skt) 57960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut{ 58960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut int ret; 59960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 60e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut ret = gpio_request_array(colibri_pcmcia_gpios, 61e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut ARRAY_SIZE(colibri_pcmcia_gpios)); 62960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut if (ret) 63960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut goto err1; 64960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 65e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut skt->socket.pci_irq = gpio_to_irq(colibri_pcmcia_gpios[READY].gpio); 66a9bb5a4bf9f84256499c802fd397d56d55227e4fRussell King skt->stat[SOC_STAT_CD].irq = gpio_to_irq(colibri_pcmcia_gpios[DETECT].gpio); 67a9bb5a4bf9f84256499c802fd397d56d55227e4fRussell King skt->stat[SOC_STAT_CD].name = "PCMCIA CD"; 68960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 69960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasuterr1: 70960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut return ret; 71960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut} 72960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 73960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic void colibri_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) 74960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut{ 75e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut gpio_free_array(colibri_pcmcia_gpios, 76e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut ARRAY_SIZE(colibri_pcmcia_gpios)); 77960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut} 78960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 79960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic void colibri_pcmcia_socket_state(struct soc_pcmcia_socket *skt, 80960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut struct pcmcia_state *state) 81960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut{ 82960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 83e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut state->detect = !!gpio_get_value(colibri_pcmcia_gpios[DETECT].gpio); 84e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut state->ready = !!gpio_get_value(colibri_pcmcia_gpios[READY].gpio); 85e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut state->bvd1 = !!gpio_get_value(colibri_pcmcia_gpios[BVD1].gpio); 86e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut state->bvd2 = !!gpio_get_value(colibri_pcmcia_gpios[BVD2].gpio); 87960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut state->vs_3v = 1; 88960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut state->vs_Xv = 0; 89960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut} 90960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 91960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic int 92960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutcolibri_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, 93960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut const socket_state_t *state) 94960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut{ 95e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut gpio_set_value(colibri_pcmcia_gpios[PPEN].gpio, 96960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut !(state->Vcc == 33 && state->Vpp < 50)); 97e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut gpio_set_value(colibri_pcmcia_gpios[RESET].gpio, 98e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut state->flags & SS_RESET); 99960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut return 0; 100960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut} 101960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 102960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic struct pcmcia_low_level colibri_pcmcia_ops = { 103960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut .owner = THIS_MODULE, 104960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 105960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut .first = 0, 106960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut .nr = 1, 107960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 108960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut .hw_init = colibri_pcmcia_hw_init, 109960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut .hw_shutdown = colibri_pcmcia_hw_shutdown, 110960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 111960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut .socket_state = colibri_pcmcia_socket_state, 112960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut .configure_socket = colibri_pcmcia_configure_socket, 113960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut}; 114960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 115960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic struct platform_device *colibri_pcmcia_device; 116960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 117960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic int __init colibri_pcmcia_init(void) 118960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut{ 119960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut int ret; 120960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 1218d9bd9002dc8c3a05e11c5f40d95d06e15e83f71Dmitry Eremin-Solenikov if (!machine_is_colibri() && !machine_is_colibri320()) 1228d9bd9002dc8c3a05e11c5f40d95d06e15e83f71Dmitry Eremin-Solenikov return -ENODEV; 1238d9bd9002dc8c3a05e11c5f40d95d06e15e83f71Dmitry Eremin-Solenikov 124960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut colibri_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); 125960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut if (!colibri_pcmcia_device) 126960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut return -ENOMEM; 127960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 128960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut /* Colibri PXA270 */ 129960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut if (machine_is_colibri()) { 130e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[RESET].gpio = COLIBRI270_RESET_GPIO; 131e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[PPEN].gpio = COLIBRI270_PPEN_GPIO; 132e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[BVD1].gpio = COLIBRI270_BVD1_GPIO; 133e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[BVD2].gpio = COLIBRI270_BVD2_GPIO; 134e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[DETECT].gpio = COLIBRI270_DETECT_GPIO; 135e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[READY].gpio = COLIBRI270_READY_GPIO; 136fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut /* Colibri PXA320 */ 137fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek Vasut } else if (machine_is_colibri320()) { 138e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[RESET].gpio = COLIBRI320_RESET_GPIO; 139e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[PPEN].gpio = COLIBRI320_PPEN_GPIO; 140e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[BVD1].gpio = COLIBRI320_BVD1_GPIO; 141e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[BVD2].gpio = COLIBRI320_BVD2_GPIO; 142e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[DETECT].gpio = COLIBRI320_DETECT_GPIO; 143e593106ca409e5e37d18121d922fc4f449c60d41Marek Vasut colibri_pcmcia_gpios[READY].gpio = COLIBRI320_READY_GPIO; 144960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut } 145960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 146960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut ret = platform_device_add_data(colibri_pcmcia_device, 147960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut &colibri_pcmcia_ops, sizeof(colibri_pcmcia_ops)); 148960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 149960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut if (!ret) 150960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut ret = platform_device_add(colibri_pcmcia_device); 151960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 152960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut if (ret) 153960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut platform_device_put(colibri_pcmcia_device); 154960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 155960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut return ret; 156960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut} 157960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 158960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutstatic void __exit colibri_pcmcia_exit(void) 159960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut{ 160960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut platform_device_unregister(colibri_pcmcia_device); 161960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut} 162960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 163960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutmodule_init(colibri_pcmcia_init); 164960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasutmodule_exit(colibri_pcmcia_exit); 165960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek Vasut 166960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek VasutMODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); 167fd62999bad9fc3b176ef6bc9d2a71be940efd908Marek VasutMODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270/PXA320"); 168960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek VasutMODULE_ALIAS("platform:pxa2xx-pcmcia"); 169960c0acaabf603e39b121ae5c0580aaca6f8aa7bMarek VasutMODULE_LICENSE("GPL"); 170