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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
165 lines
4.4 KiB
C
165 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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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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#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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#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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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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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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MODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270/PXA320");
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MODULE_ALIAS("platform:pxa2xx-pcmcia");
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MODULE_LICENSE("GPL");
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