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Revision a7d82a0a3cd547494294baee7f9764ea44bead73 authored by Daniel Hellstrom on 09 June 2011, 02:54:08 UTC, committed by David S. Miller on 09 June 2011, 23:12:34 UTC 
sparc32, sun4m: bugfix in SMP IPI traphandler
 
Three new IPIs were introduced by commit
ecbc42b70acbc6327adefe9635db93fcf62bf59d ("sparc32, sun4m:
Implemented SMP IPIs support for SUN4M machines"), the
old handler was already prepared for IPIs but handled only
IRQ14 and IRQ13, this patch adds support for the new IPI at
IRQ12.

The IPI trap handler looks at the mask rather than the
pending IRQ/IPI, this bug may have masked the problem
above, introduced by the same commit.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 6cb79b3
Raw File
pxa2xx_palmld.c 
/*
 * linux/drivers/pcmcia/pxa2xx_palmld.c
 *
 * Driver for Palm LifeDrive PCMCIA
 *
 * Copyright (C) 2006 Alex Osborne <ato@meshy.org>
 * Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>

#include <asm/mach-types.h>
#include <mach/palmld.h>
#include "soc_common.h"

static struct gpio palmld_pcmcia_gpios[] = {
	{ GPIO_NR_PALMLD_PCMCIA_POWER,	GPIOF_INIT_LOW,	"PCMCIA Power" },
	{ GPIO_NR_PALMLD_PCMCIA_RESET,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
	{ GPIO_NR_PALMLD_PCMCIA_READY,	GPIOF_IN,	"PCMCIA Ready" },
};

static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret;

	ret = gpio_request_array(palmld_pcmcia_gpios,
				ARRAY_SIZE(palmld_pcmcia_gpios));

	skt->socket.pci_irq = IRQ_GPIO(GPIO_NR_PALMLD_PCMCIA_READY);

	return ret;
}

static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios));
}

static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	state->detect = 1; /* always inserted */
	state->ready  = !!gpio_get_value(GPIO_NR_PALMLD_PCMCIA_READY);
	state->bvd1   = 1;
	state->bvd2   = 1;
	state->wrprot = 0;
	state->vs_3v  = 1;
	state->vs_Xv  = 0;
}

static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
					const socket_state_t *state)
{
	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1);
	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET,
			!!(state->flags & SS_RESET));

	return 0;
}

static void palmld_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
}

static void palmld_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
}

static struct pcmcia_low_level palmld_pcmcia_ops = {
	.owner			= THIS_MODULE,

	.first			= 1,
	.nr			= 1,

	.hw_init		= palmld_pcmcia_hw_init,
	.hw_shutdown		= palmld_pcmcia_hw_shutdown,

	.socket_state		= palmld_pcmcia_socket_state,
	.configure_socket	= palmld_pcmcia_configure_socket,

	.socket_init		= palmld_pcmcia_socket_init,
	.socket_suspend		= palmld_pcmcia_socket_suspend,
};

static struct platform_device *palmld_pcmcia_device;

static int __init palmld_pcmcia_init(void)
{
	int ret;

	if (!machine_is_palmld())
		return -ENODEV;

	palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	if (!palmld_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
					sizeof(palmld_pcmcia_ops));

	if (!ret)
		ret = platform_device_add(palmld_pcmcia_device);

	if (ret)
		platform_device_put(palmld_pcmcia_device);

	return ret;
}

static void __exit palmld_pcmcia_exit(void)
{
	platform_device_unregister(palmld_pcmcia_device);
}

module_init(palmld_pcmcia_init);
module_exit(palmld_pcmcia_exit);

MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
	    " Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
MODULE_LICENSE("GPL");
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