116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
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/*
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* linux/drivers/pcmcia/pxa2xx_palmtx.c
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*
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* Driver for Palm T|X PCMCIA
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*
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* Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.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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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <asm/mach-types.h>
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#include <mach/palmtx.h>
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#include "soc_common.h"
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static struct gpio palmtx_pcmcia_gpios[] = {
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{ GPIO_NR_PALMTX_PCMCIA_POWER1, GPIOF_INIT_LOW, "PCMCIA Power 1" },
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{ GPIO_NR_PALMTX_PCMCIA_POWER2, GPIOF_INIT_LOW, "PCMCIA Power 2" },
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{ GPIO_NR_PALMTX_PCMCIA_RESET, GPIOF_INIT_HIGH,"PCMCIA Reset" },
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};
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static int palmtx_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(palmtx_pcmcia_gpios,
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ARRAY_SIZE(palmtx_pcmcia_gpios));
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skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMTX_PCMCIA_READY;
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skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
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return ret;
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}
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static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
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{
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gpio_free_array(palmtx_pcmcia_gpios, ARRAY_SIZE(palmtx_pcmcia_gpios));
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}
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static void palmtx_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 = 1; /* always inserted */
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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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palmtx_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(GPIO_NR_PALMTX_PCMCIA_POWER1, 1);
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gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1);
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gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET,
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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 palmtx_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 = palmtx_pcmcia_hw_init,
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.hw_shutdown = palmtx_pcmcia_hw_shutdown,
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.socket_state = palmtx_pcmcia_socket_state,
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.configure_socket = palmtx_pcmcia_configure_socket,
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};
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static struct platform_device *palmtx_pcmcia_device;
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static int __init palmtx_pcmcia_init(void)
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{
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int ret;
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if (!machine_is_palmtx())
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return -ENODEV;
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palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
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if (!palmtx_pcmcia_device)
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return -ENOMEM;
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ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops,
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sizeof(palmtx_pcmcia_ops));
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if (!ret)
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ret = platform_device_add(palmtx_pcmcia_device);
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if (ret)
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platform_device_put(palmtx_pcmcia_device);
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return ret;
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}
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static void __exit palmtx_pcmcia_exit(void)
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{
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platform_device_unregister(palmtx_pcmcia_device);
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}
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module_init(palmtx_pcmcia_init);
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module_exit(palmtx_pcmcia_exit);
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MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
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MODULE_DESCRIPTION("PCMCIA support for Palm T|X");
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MODULE_ALIAS("platform:pxa2xx-pcmcia");
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MODULE_LICENSE("GPL");
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