2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/spinlock.h>
12 #include <bcm63xx_cpu.h>
13 #include <bcm63xx_gpio.h>
14 #include <bcm63xx_io.h>
15 #include <bcm63xx_regs.h>
17 static DEFINE_SPINLOCK(bcm63xx_gpio_lock);
19 void bcm63xx_gpio_set_dataout(int gpio, int val)
26 if (gpio >= BCM63XX_GPIO_COUNT)
30 reg = GPIO_DATA_LO_REG;
33 reg = GPIO_DATA_HI_REG;
34 mask = 1 << (gpio - 32);
37 spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
38 tmp = bcm_gpio_readl(reg);
43 bcm_gpio_writel(tmp, reg);
44 spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
47 EXPORT_SYMBOL(bcm63xx_gpio_set_dataout);
49 int bcm63xx_gpio_get_datain(int gpio)
54 if (gpio >= BCM63XX_GPIO_COUNT)
58 reg = GPIO_DATA_LO_REG;
61 reg = GPIO_DATA_HI_REG;
62 mask = 1 << (gpio - 32);
65 return !!(bcm_gpio_readl(reg) & mask);
68 EXPORT_SYMBOL(bcm63xx_gpio_get_datain);
70 void bcm63xx_gpio_set_direction(int gpio, int dir)
77 if (gpio >= BCM63XX_GPIO_COUNT)
81 reg = GPIO_CTL_LO_REG;
84 reg = GPIO_CTL_HI_REG;
85 mask = 1 << (gpio - 32);
88 spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
89 tmp = bcm_gpio_readl(reg);
90 if (dir == GPIO_DIR_IN)
94 bcm_gpio_writel(tmp, reg);
95 spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
98 EXPORT_SYMBOL(bcm63xx_gpio_set_direction);