/* * arch/sh/boards/landisk/psw.c * * push switch support for LANDISK and USL-5P * * Copyright (C) 2006-2007  Paul Mundt * Copyright (C) 2007  kogiidena * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. */#include <linux/io.h>#include <linux/init.h>#include <linux/interrupt.h>#include <linux/platform_device.h>#include <asm/landisk/iodata_landisk.h>#include <asm/push-switch.h>static irqreturn_t psw_irq_handler(int irq, void *arg){	struct platform_device *pdev = arg;	struct push_switch *psw = platform_get_drvdata(pdev);	struct push_switch_platform_info *psw_info = pdev->dev.platform_data;	unsigned int sw_value;	int ret = 0;	sw_value = (0x0ff & (~ctrl_inb(PA_STATUS)));	/* Nothing to do if there's no state change */	if (psw->state) {		ret = 1;		goto out;	}	/* Figure out who raised it */	if (sw_value & (1 << psw_info->bit)) {		psw->state = 1;		mod_timer(&psw->debounce, jiffies + 50);		ret = 1;	}out:	/* Clear the switch IRQs */	ctrl_outb(0x00, PA_PWRINT_CLR);	return IRQ_RETVAL(ret);}static struct resource psw_power_resources[] = {	[0] = {		.start = IRQ_POWER,		.flags = IORESOURCE_IRQ,       },};static struct resource psw_usl5p_resources[] = {	[0] = {		.start = IRQ_BUTTON,		.flags = IORESOURCE_IRQ,	},};static struct push_switch_platform_info psw_power_platform_data = {	.name		= "psw_power",	.bit		= 4,	.irq_flags	= IRQF_SHARED,	.irq_handler	= psw_irq_handler,};static struct push_switch_platform_info psw1_platform_data = {	.name		= "psw1",	.bit		= 0,	.irq_flags	= IRQF_SHARED,	.irq_handler	= psw_irq_handler,};static struct push_switch_platform_info psw2_platform_data = {	.name		= "psw2",	.bit		= 2,	.irq_flags	= IRQF_SHARED,	.irq_handler	= psw_irq_handler,};static struct push_switch_platform_info psw3_platform_data = {	.name		= "psw3",	.bit		= 1,	.irq_flags	= IRQF_SHARED,	.irq_handler	= psw_irq_handler,};static struct platform_device psw_power_switch_device = {	.name		= "push-switch",	.id		= 0,	.num_resources	= ARRAY_SIZE(psw_power_resources),	.resource	= psw_power_resources,	.dev		= {		.platform_data = &psw_power_platform_data,	},};static struct platform_device psw1_switch_device = {	.name		= "push-switch",	.id		= 1,	.num_resources	= ARRAY_SIZE(psw_usl5p_resources),	.resource	= psw_usl5p_resources,	.dev		= {		.platform_data = &psw1_platform_data,	},};static struct platform_device psw2_switch_device = {	.name		= "push-switch",	.id		= 2,	.num_resources	= ARRAY_SIZE(psw_usl5p_resources),	.resource	= psw_usl5p_resources,	.dev		= {		.platform_data = &psw2_platform_data,	},};static struct platform_device psw3_switch_device = {	.name		= "push-switch",	.id		= 3,	.num_resources	= ARRAY_SIZE(psw_usl5p_resources),	.resource	= psw_usl5p_resources,	.dev = {		.platform_data = &psw3_platform_data,	},};static struct platform_device *psw_devices[] = {	&psw_power_switch_device,	&psw1_switch_device,	&psw2_switch_device,	&psw3_switch_device,};static int __init psw_init(void){	return platform_add_devices(psw_devices, ARRAY_SIZE(psw_devices));}module_init(psw_init);