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// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/drivers/pcmcia/pxa2xx_colibri.c
*
* Driver for Toradex Colibri PXA270 CF socket
*
* Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
*/
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <asm/mach-types.h>
#include "soc_common.h"
static struct gpio_desc *ppen_gpio;
static int colibri_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
struct device *dev = skt->socket.dev.parent;
skt->stat[SOC_STAT_CD].name = "detect";
skt->stat[SOC_STAT_BVD1].name = "bvd1";
skt->stat[SOC_STAT_BVD2].name = "bvd2";
skt->stat[SOC_STAT_RDY].name = "ready";
skt->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(skt->gpio_reset))
return PTR_ERR(skt->gpio_reset);
ppen_gpio = devm_gpiod_get(dev, "ppen", GPIOD_OUT_LOW);
if (IS_ERR(ppen_gpio))
return PTR_ERR(ppen_gpio);
return soc_pcmcia_request_gpiods(skt);
}
static int
colibri_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
const socket_state_t *state)
{
gpiod_set_value(ppen_gpio, !(state->Vcc == 33 && state->Vpp < 50));
return 0;
}
static struct pcmcia_low_level colibri_pcmcia_ops = {
.owner = THIS_MODULE,
.first = 0,
.nr = 1,
.hw_init = colibri_pcmcia_hw_init,
.socket_state = soc_common_cf_socket_state,
.configure_socket = colibri_pcmcia_configure_socket,
};
static struct platform_device *colibri_pcmcia_device;
static int __init colibri_pcmcia_init(void)
{
int ret;
if (!machine_is_colibri() && !machine_is_colibri320())
return -ENODEV;
colibri_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
if (!colibri_pcmcia_device)
return -ENOMEM;
ret = platform_device_add_data(colibri_pcmcia_device,
&colibri_pcmcia_ops, sizeof(colibri_pcmcia_ops));
if (!ret)
ret = platform_device_add(colibri_pcmcia_device);
if (ret)
platform_device_put(colibri_pcmcia_device);
return ret;
}
static void __exit colibri_pcmcia_exit(void)
{
platform_device_unregister(colibri_pcmcia_device);
}
module_init(colibri_pcmcia_init);
module_exit(colibri_pcmcia_exit);
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270/PXA320");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
MODULE_LICENSE("GPL");
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