ARM: OMAP: make legacy gpio request/free calls superfluous

[linux-2.6-omap-h63xx.git] / arch / arm / plat-omap / gpio.c

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index a6dbef4760354e6fa93f5404ffb9aba93b8cbb98..e8aae2ac2a00d153d982e16a714e5ded147779e2 100644 (file)
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -886,26 +886,17 @@ static int gpio_wake_enable(unsigned int irq, unsigned int enable)
        return retval;
 }
 
-int omap_request_gpio(int gpio)
+static int omap_gpio_request(struct gpio_chip *chip, unsigned offset)
 {
-       struct gpio_bank *bank;
+       struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
        unsigned long flags;
-       int status;
-
-       if (check_gpio(gpio) < 0)
-               return -EINVAL;
-
-       status = gpio_request(gpio, NULL);
-       if (status < 0)
-               return status;
 
-       bank = get_gpio_bank(gpio);
        spin_lock_irqsave(&bank->lock, flags);
 
        /* Set trigger to none. You need to enable the desired trigger with
         * request_irq() or set_irq_type().
         */
-       _set_gpio_triggering(bank, get_gpio_index(gpio), IRQ_TYPE_NONE);
+       _set_gpio_triggering(bank, offset, IRQ_TYPE_NONE);
 
 #ifdef CONFIG_ARCH_OMAP15XX
        if (bank->method == METHOD_GPIO_1510) {
@@ -913,7 +904,7 @@ int omap_request_gpio(int gpio)
 
                /* Claim the pin for MPU */
                reg = bank->base + OMAP1510_GPIO_PIN_CONTROL;
-               __raw_writel(__raw_readl(reg) | (1 << get_gpio_index(gpio)), reg);
+               __raw_writel(__raw_readl(reg) | (1 << offset), reg);
        }
 #endif
        spin_unlock_irqrestore(&bank->lock, flags);
@@ -921,39 +912,28 @@ int omap_request_gpio(int gpio)
        return 0;
 }
 
-void omap_free_gpio(int gpio)
+static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
 {
-       struct gpio_bank *bank;
+       struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
        unsigned long flags;
 
-       if (check_gpio(gpio) < 0)
-               return;
-       bank = get_gpio_bank(gpio);
        spin_lock_irqsave(&bank->lock, flags);
-       if (unlikely(!gpiochip_is_requested(&bank->chip,
-                               get_gpio_index(gpio)))) {
-               spin_unlock_irqrestore(&bank->lock, flags);
-               printk(KERN_ERR "omap-gpio: GPIO %d wasn't reserved!\n", gpio);
-               dump_stack();
-               return;
-       }
 #ifdef CONFIG_ARCH_OMAP16XX
        if (bank->method == METHOD_GPIO_1610) {
                /* Disable wake-up during idle for dynamic tick */
                void __iomem *reg = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA;
-               __raw_writel(1 << get_gpio_index(gpio), reg);
+               __raw_writel(1 << offset, reg);
        }
 #endif
 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
        if (bank->method == METHOD_GPIO_24XX) {
                /* Disable wake-up during idle for dynamic tick */
                void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
-               __raw_writel(1 << get_gpio_index(gpio), reg);
+               __raw_writel(1 << offset, reg);
        }
 #endif
-       _reset_gpio(bank, gpio);
+       _reset_gpio(bank, bank->chip.base + offset);
        spin_unlock_irqrestore(&bank->lock, flags);
-       gpio_free(gpio);
 }
 
 /*
@@ -1458,6 +1438,8 @@ static int __init _omap_gpio_init(void)
                /* REVISIT eventually switch from OMAP-specific gpio structs
                 * over to the generic ones
                 */
+               bank->chip.request = omap_gpio_request;
+               bank->chip.free = omap_gpio_free;
                bank->chip.direction_input = gpio_input;
                bank->chip.get = gpio_get;
                bank->chip.direction_output = gpio_output;
@@ -1726,9 +1708,6 @@ static int __init omap_gpio_sysinit(void)
        return ret;
 }
 
-EXPORT_SYMBOL(omap_request_gpio);
-EXPORT_SYMBOL(omap_free_gpio);
-
 arch_initcall(omap_gpio_sysinit);