138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* linux/drivers/pcmcia/pxa2xx_vpac270.c
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*
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* Driver for Voipac PXA270 PCMCIA and CF sockets
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*
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* Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.com>
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*/
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#include <linux/gpio.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <asm/mach-types.h>
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#include <mach/vpac270.h>
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#include "soc_common.h"
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static struct gpio vpac270_pcmcia_gpios[] = {
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{ GPIO107_VPAC270_PCMCIA_PPEN, GPIOF_INIT_LOW, "PCMCIA PPEN" },
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{ GPIO11_VPAC270_PCMCIA_RESET, GPIOF_INIT_LOW, "PCMCIA Reset" },
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};
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static struct gpio vpac270_cf_gpios[] = {
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{ GPIO16_VPAC270_CF_RESET, GPIOF_INIT_LOW, "CF Reset" },
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};
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static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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{
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int ret;
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if (skt->nr == 0) {
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ret = gpio_request_array(vpac270_pcmcia_gpios,
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ARRAY_SIZE(vpac270_pcmcia_gpios));
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skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
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skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
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skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
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skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
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} else {
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ret = gpio_request_array(vpac270_cf_gpios,
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ARRAY_SIZE(vpac270_cf_gpios));
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skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
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skt->stat[SOC_STAT_CD].name = "CF CD";
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skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
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skt->stat[SOC_STAT_RDY].name = "CF Ready";
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}
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return ret;
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}
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static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
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{
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if (skt->nr == 0)
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gpio_free_array(vpac270_pcmcia_gpios,
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ARRAY_SIZE(vpac270_pcmcia_gpios));
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else
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gpio_free_array(vpac270_cf_gpios,
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ARRAY_SIZE(vpac270_cf_gpios));
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}
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static void vpac270_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->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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vpac270_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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if (skt->nr == 0) {
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gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
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(state->flags & SS_RESET));
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gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
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!(state->Vcc == 33 || state->Vcc == 50));
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} else {
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gpio_set_value(GPIO16_VPAC270_CF_RESET,
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(state->flags & SS_RESET));
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}
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return 0;
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}
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static struct pcmcia_low_level vpac270_pcmcia_ops = {
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.owner = THIS_MODULE,
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.first = 0,
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.nr = 2,
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.hw_init = vpac270_pcmcia_hw_init,
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.hw_shutdown = vpac270_pcmcia_hw_shutdown,
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.socket_state = vpac270_pcmcia_socket_state,
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.configure_socket = vpac270_pcmcia_configure_socket,
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};
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static struct platform_device *vpac270_pcmcia_device;
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static int __init vpac270_pcmcia_init(void)
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{
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int ret;
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if (!machine_is_vpac270())
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return -ENODEV;
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vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
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if (!vpac270_pcmcia_device)
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return -ENOMEM;
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ret = platform_device_add_data(vpac270_pcmcia_device,
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&vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
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if (!ret)
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ret = platform_device_add(vpac270_pcmcia_device);
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if (ret)
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platform_device_put(vpac270_pcmcia_device);
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return ret;
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}
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static void __exit vpac270_pcmcia_exit(void)
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{
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platform_device_unregister(vpac270_pcmcia_device);
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}
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module_init(vpac270_pcmcia_init);
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module_exit(vpac270_pcmcia_exit);
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MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
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MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
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MODULE_ALIAS("platform:pxa2xx-pcmcia");
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MODULE_LICENSE("GPL");
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