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6d341675f8
PCMCIA driver for Palm LifeDrive Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
152 lines
3.5 KiB
C
152 lines
3.5 KiB
C
/*
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* linux/drivers/pcmcia/pxa2xx_palmld.c
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*
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* Driver for Palm LifeDrive PCMCIA
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*
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* Copyright (C) 2006 Alex Osborne <ato@meshy.org>
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* Copyright (C) 2007-2008 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/palmld.h>
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#include "soc_common.h"
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static int palmld_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(GPIO_NR_PALMLD_PCMCIA_POWER, "PCMCIA PWR");
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if (ret)
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goto err1;
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ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_POWER, 0);
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if (ret)
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goto err2;
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ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_RESET, "PCMCIA RST");
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if (ret)
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goto err2;
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ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_RESET, 1);
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if (ret)
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goto err3;
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ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_READY, "PCMCIA RDY");
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if (ret)
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goto err3;
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ret = gpio_direction_input(GPIO_NR_PALMLD_PCMCIA_READY);
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if (ret)
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goto err4;
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skt->irq = IRQ_GPIO(GPIO_NR_PALMLD_PCMCIA_READY);
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return 0;
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err4:
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gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
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err3:
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gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
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err2:
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gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
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err1:
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return ret;
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}
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static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
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{
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gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
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gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
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gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
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}
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static void palmld_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->ready = !!gpio_get_value(GPIO_NR_PALMLD_PCMCIA_READY);
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state->bvd1 = 1;
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state->bvd2 = 1;
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state->wrprot = 0;
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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 palmld_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_PALMLD_PCMCIA_POWER, 1);
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gpio_set_value(GPIO_NR_PALMLD_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 void palmld_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
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{
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}
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static void palmld_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
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{
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}
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static struct pcmcia_low_level palmld_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 = palmld_pcmcia_hw_init,
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.hw_shutdown = palmld_pcmcia_hw_shutdown,
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.socket_state = palmld_pcmcia_socket_state,
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.configure_socket = palmld_pcmcia_configure_socket,
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.socket_init = palmld_pcmcia_socket_init,
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.socket_suspend = palmld_pcmcia_socket_suspend,
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};
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static struct platform_device *palmld_pcmcia_device;
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static int __init palmld_pcmcia_init(void)
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{
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int ret;
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if (!machine_is_palmld())
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return -ENODEV;
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palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
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if (!palmld_pcmcia_device)
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return -ENOMEM;
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ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
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sizeof(palmld_pcmcia_ops));
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if (!ret)
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ret = platform_device_add(palmld_pcmcia_device);
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if (ret)
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platform_device_put(palmld_pcmcia_device);
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return ret;
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}
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static void __exit palmld_pcmcia_exit(void)
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{
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platform_device_unregister(palmld_pcmcia_device);
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}
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module_init(palmld_pcmcia_init);
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module_exit(palmld_pcmcia_exit);
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MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
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" Marek Vasut <marek.vasut@gmail.com>");
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MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
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MODULE_ALIAS("platform:pxa2xx-pcmcia");
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MODULE_LICENSE("GPL");
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