131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/*
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* Toshiba e740 PCMCIA specific routines.
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*
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* (c) 2004 Ian Molton <spyro@f2s.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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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/gpio.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <mach/eseries-gpio.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include "soc_common.h"
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static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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{
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if (skt->nr == 0) {
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skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD0;
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skt->stat[SOC_STAT_CD].name = "CF card detect";
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skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY0;
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skt->stat[SOC_STAT_RDY].name = "CF ready";
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} else {
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skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD1;
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skt->stat[SOC_STAT_CD].name = "Wifi switch";
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skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY1;
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skt->stat[SOC_STAT_RDY].name = "Wifi ready";
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}
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return 0;
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}
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static void e740_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 e740_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 (state->flags & SS_RESET) {
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if (skt->nr == 0)
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gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
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else
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gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
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} else {
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if (skt->nr == 0)
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gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
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else
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gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
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}
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switch (state->Vcc) {
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case 0: /* Socket off */
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if (skt->nr == 0)
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gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
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else
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gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
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break;
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case 50:
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case 33: /* socket on */
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if (skt->nr == 0)
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gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
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else
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gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
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break;
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default:
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printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
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}
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return 0;
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}
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static struct pcmcia_low_level e740_pcmcia_ops = {
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.owner = THIS_MODULE,
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.hw_init = e740_pcmcia_hw_init,
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.socket_state = e740_pcmcia_socket_state,
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.configure_socket = e740_pcmcia_configure_socket,
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.nr = 2,
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};
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static struct platform_device *e740_pcmcia_device;
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static int __init e740_pcmcia_init(void)
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{
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int ret;
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if (!machine_is_e740())
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return -ENODEV;
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e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
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if (!e740_pcmcia_device)
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return -ENOMEM;
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ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
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sizeof(e740_pcmcia_ops));
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if (!ret)
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ret = platform_device_add(e740_pcmcia_device);
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if (ret)
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platform_device_put(e740_pcmcia_device);
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return ret;
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}
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static void __exit e740_pcmcia_exit(void)
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{
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platform_device_unregister(e740_pcmcia_device);
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}
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module_init(e740_pcmcia_init);
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module_exit(e740_pcmcia_exit);
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
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MODULE_ALIAS("platform:pxa2xx-pcmcia");
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MODULE_DESCRIPTION("e740 PCMCIA platform support");
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