[deliverable/linux.git] / arch / unicore32 / kernel / gpio.c

/*
 * linux/arch/unicore32/kernel/gpio.c
 *
 * Code specific to PKUnity SoC and UniCore ISA
 *
 *	Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
 *	Copyright (C) 2001-2010 Guan Xuetao
 *
 * 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.
 */
/* in FPGA, no GPIO support */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/gpio/driver.h>
/* FIXME: needed for gpio_set_value() - convert to use descriptors or hogs */
#include <linux/gpio.h>
#include <mach/hardware.h>

#ifdef CONFIG_LEDS
#include <linux/leds.h>
#include <linux/platform_device.h>

static const struct gpio_led puv3_gpio_leds[] = {
	{ .name = "cpuhealth", .gpio = GPO_CPU_HEALTH, .active_low = 0,
		.default_trigger = "heartbeat",	},
	{ .name = "hdd_led", .gpio = GPO_HDD_LED, .active_low = 1,
		.default_trigger = "disk-activity", },
};

static const struct gpio_led_platform_data puv3_gpio_led_data = {
	.num_leds =	ARRAY_SIZE(puv3_gpio_leds),
	.leds =		(void *) puv3_gpio_leds,
};

static struct platform_device puv3_gpio_gpio_leds = {
	.name =		"leds-gpio",
	.id =		-1,
	.dev = {
		.platform_data = (void *) &puv3_gpio_led_data,
	}
};

static int __init puv3_gpio_leds_init(void)
{
	platform_device_register(&puv3_gpio_gpio_leds);
	return 0;
}

device_initcall(puv3_gpio_leds_init);
#endif

static int puv3_gpio_get(struct gpio_chip *chip, unsigned offset)
{
	return !!(readl(GPIO_GPLR) & GPIO_GPIO(offset));
}

static void puv3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
	if (value)
		writel(GPIO_GPIO(offset), GPIO_GPSR);
	else
		writel(GPIO_GPIO(offset), GPIO_GPCR);
}

static int puv3_direction_input(struct gpio_chip *chip, unsigned offset)
{
	unsigned long flags;

	local_irq_save(flags);
	writel(readl(GPIO_GPDR) & ~GPIO_GPIO(offset), GPIO_GPDR);
	local_irq_restore(flags);
	return 0;
}

static int puv3_direction_output(struct gpio_chip *chip, unsigned offset,
		int value)
{
	unsigned long flags;

	local_irq_save(flags);
	puv3_gpio_set(chip, offset, value);
	writel(readl(GPIO_GPDR) | GPIO_GPIO(offset), GPIO_GPDR);
	local_irq_restore(flags);
	return 0;
}

static struct gpio_chip puv3_gpio_chip = {
	.label			= "gpio",
	.direction_input	= puv3_direction_input,
	.direction_output	= puv3_direction_output,
	.set			= puv3_gpio_set,
	.get			= puv3_gpio_get,
	.base			= 0,
	.ngpio			= GPIO_MAX + 1,
};

void __init puv3_init_gpio(void)
{
	writel(GPIO_DIR, GPIO_GPDR);
#if	defined(CONFIG_PUV3_NB0916) || defined(CONFIG_PUV3_SMW0919)	\
	|| defined(CONFIG_PUV3_DB0913)
	gpio_set_value(GPO_WIFI_EN, 1);
	gpio_set_value(GPO_HDD_LED, 1);
	gpio_set_value(GPO_VGA_EN, 1);
	gpio_set_value(GPO_LCD_EN, 1);
	gpio_set_value(GPO_CAM_PWR_EN, 0);
	gpio_set_value(GPO_LCD_VCC_EN, 1);
	gpio_set_value(GPO_SOFT_OFF, 1);
	gpio_set_value(GPO_BT_EN, 1);
	gpio_set_value(GPO_FAN_ON, 0);
	gpio_set_value(GPO_SPKR, 0);
	gpio_set_value(GPO_CPU_HEALTH, 1);
	gpio_set_value(GPO_LAN_SEL, 1);
/*
 * DO NOT modify the GPO_SET_V1 and GPO_SET_V2 in kernel
 *	gpio_set_value(GPO_SET_V1, 1);
 *	gpio_set_value(GPO_SET_V2, 1);
 */
#endif
	gpiochip_add_data(&puv3_gpio_chip, NULL);
}
Commit	Line	Data
752bcb4d G	1	/*
	2	* linux/arch/unicore32/kernel/gpio.c
	3	*
	4	* Code specific to PKUnity SoC and UniCore ISA
	5	*
	6	* Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
	7	* Copyright (C) 2001-2010 Guan Xuetao
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13	/* in FPGA, no GPIO support */
	14
	15	#include <linux/init.h>
	16	#include <linux/module.h>
fd19f534 LW	17	#include <linux/gpio/driver.h>
fd19f534 LW	18	/* FIXME: needed for gpio_set_value() - convert to use descriptors or hogs */
752bcb4d G	19	#include <linux/gpio.h>
	20	#include <mach/hardware.h>
	21
	22	#ifdef CONFIG_LEDS
	23	#include <linux/leds.h>
	24	#include <linux/platform_device.h>
	25
	26	static const struct gpio_led puv3_gpio_leds[] = {
	27	{ .name = "cpuhealth", .gpio = GPO_CPU_HEALTH, .active_low = 0,
	28	.default_trigger = "heartbeat", },
	29	{ .name = "hdd_led", .gpio = GPO_HDD_LED, .active_low = 1,
fed758f6	30	.default_trigger = "disk-activity", },
752bcb4d G	31	};
	32
	33	static const struct gpio_led_platform_data puv3_gpio_led_data = {
	34	.num_leds = ARRAY_SIZE(puv3_gpio_leds),
	35	.leds = (void *) puv3_gpio_leds,
	36	};
	37
	38	static struct platform_device puv3_gpio_gpio_leds = {
	39	.name = "leds-gpio",
	40	.id = -1,
	41	.dev = {
	42	.platform_data = (void *) &puv3_gpio_led_data,
	43	}
	44	};
	45
	46	static int __init puv3_gpio_leds_init(void)
	47	{
	48	platform_device_register(&puv3_gpio_gpio_leds);
	49	return 0;
	50	}
	51
	52	device_initcall(puv3_gpio_leds_init);
	53	#endif
	54
	55	static int puv3_gpio_get(struct gpio_chip *chip, unsigned offset)
	56	{
a80bb4c9	57	return !!(readl(GPIO_GPLR) & GPIO_GPIO(offset));
752bcb4d G	58	}
	59
	60	static void puv3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
	61	{
	62	if (value)
e5abf78b	63	writel(GPIO_GPIO(offset), GPIO_GPSR);
752bcb4d	64	else
e5abf78b	65	writel(GPIO_GPIO(offset), GPIO_GPCR);
752bcb4d G	66	}
	67
	68	static int puv3_direction_input(struct gpio_chip *chip, unsigned offset)
	69	{
	70	unsigned long flags;
	71
	72	local_irq_save(flags);
e5abf78b	73	writel(readl(GPIO_GPDR) & ~GPIO_GPIO(offset), GPIO_GPDR);
752bcb4d G	74	local_irq_restore(flags);
	75	return 0;
	76	}
	77
	78	static int puv3_direction_output(struct gpio_chip *chip, unsigned offset,
	79	int value)
	80	{
	81	unsigned long flags;
	82
	83	local_irq_save(flags);
	84	puv3_gpio_set(chip, offset, value);
e5abf78b	85	writel(readl(GPIO_GPDR) \| GPIO_GPIO(offset), GPIO_GPDR);
752bcb4d G	86	local_irq_restore(flags);
	87	return 0;
	88	}
	89
	90	static struct gpio_chip puv3_gpio_chip = {
	91	.label = "gpio",
	92	.direction_input = puv3_direction_input,
	93	.direction_output = puv3_direction_output,
	94	.set = puv3_gpio_set,
	95	.get = puv3_gpio_get,
	96	.base = 0,
	97	.ngpio = GPIO_MAX + 1,
	98	};
	99
	100	void __init puv3_init_gpio(void)
	101	{
e5abf78b	102	writel(GPIO_DIR, GPIO_GPDR);
752bcb4d G	103	#if defined(CONFIG_PUV3_NB0916) \|\| defined(CONFIG_PUV3_SMW0919) \
	104	\|\| defined(CONFIG_PUV3_DB0913)
	105	gpio_set_value(GPO_WIFI_EN, 1);
	106	gpio_set_value(GPO_HDD_LED, 1);
	107	gpio_set_value(GPO_VGA_EN, 1);
	108	gpio_set_value(GPO_LCD_EN, 1);
	109	gpio_set_value(GPO_CAM_PWR_EN, 0);
	110	gpio_set_value(GPO_LCD_VCC_EN, 1);
	111	gpio_set_value(GPO_SOFT_OFF, 1);
	112	gpio_set_value(GPO_BT_EN, 1);
	113	gpio_set_value(GPO_FAN_ON, 0);
	114	gpio_set_value(GPO_SPKR, 0);
	115	gpio_set_value(GPO_CPU_HEALTH, 1);
	116	gpio_set_value(GPO_LAN_SEL, 1);
	117	/*
	118	* DO NOT modify the GPO_SET_V1 and GPO_SET_V2 in kernel
	119	* gpio_set_value(GPO_SET_V1, 1);
	120	* gpio_set_value(GPO_SET_V2, 1);
	121	*/
	122	#endif
fd19f534	123	gpiochip_add_data(&puv3_gpio_chip, NULL);
752bcb4d	124	}