ARM: OMAP: make legacy gpio request/free calls superfluous
Clean up OMAP GPIO request/free functions - Rename and declare static OMAP specific GPIO request/free functions - Register them into gpiolib as chip-specific hooks - Add omap_request_gpio/omap_free_gpio wrappers for existing code not converted yet to use gpiolib Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> [ dbrownell@users.sourceforge.net: remove needless check_gpio() calls ] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
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Родитель
15f74b0335
Коммит
3ff164e155
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@ -886,26 +886,17 @@ static int gpio_wake_enable(unsigned int irq, unsigned int enable)
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return retval;
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}
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int omap_request_gpio(int gpio)
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static int omap_gpio_request(struct gpio_chip *chip, unsigned offset)
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{
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struct gpio_bank *bank;
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struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
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unsigned long flags;
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int status;
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if (check_gpio(gpio) < 0)
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return -EINVAL;
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status = gpio_request(gpio, NULL);
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if (status < 0)
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return status;
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bank = get_gpio_bank(gpio);
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spin_lock_irqsave(&bank->lock, flags);
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/* Set trigger to none. You need to enable the desired trigger with
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* request_irq() or set_irq_type().
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*/
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_set_gpio_triggering(bank, get_gpio_index(gpio), IRQ_TYPE_NONE);
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_set_gpio_triggering(bank, offset, IRQ_TYPE_NONE);
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#ifdef CONFIG_ARCH_OMAP15XX
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if (bank->method == METHOD_GPIO_1510) {
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@ -913,7 +904,7 @@ int omap_request_gpio(int gpio)
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/* Claim the pin for MPU */
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reg = bank->base + OMAP1510_GPIO_PIN_CONTROL;
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__raw_writel(__raw_readl(reg) | (1 << get_gpio_index(gpio)), reg);
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__raw_writel(__raw_readl(reg) | (1 << offset), reg);
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}
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#endif
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spin_unlock_irqrestore(&bank->lock, flags);
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@ -921,39 +912,28 @@ int omap_request_gpio(int gpio)
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return 0;
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}
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void omap_free_gpio(int gpio)
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static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
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{
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struct gpio_bank *bank;
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struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip);
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unsigned long flags;
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if (check_gpio(gpio) < 0)
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return;
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bank = get_gpio_bank(gpio);
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spin_lock_irqsave(&bank->lock, flags);
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if (unlikely(!gpiochip_is_requested(&bank->chip,
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get_gpio_index(gpio)))) {
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spin_unlock_irqrestore(&bank->lock, flags);
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printk(KERN_ERR "omap-gpio: GPIO %d wasn't reserved!\n", gpio);
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dump_stack();
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return;
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}
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#ifdef CONFIG_ARCH_OMAP16XX
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if (bank->method == METHOD_GPIO_1610) {
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/* Disable wake-up during idle for dynamic tick */
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void __iomem *reg = bank->base + OMAP1610_GPIO_CLEAR_WAKEUPENA;
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__raw_writel(1 << get_gpio_index(gpio), reg);
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__raw_writel(1 << offset, reg);
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}
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#endif
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#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
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if (bank->method == METHOD_GPIO_24XX) {
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/* Disable wake-up during idle for dynamic tick */
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void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
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__raw_writel(1 << get_gpio_index(gpio), reg);
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__raw_writel(1 << offset, reg);
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}
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#endif
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_reset_gpio(bank, gpio);
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_reset_gpio(bank, bank->chip.base + offset);
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spin_unlock_irqrestore(&bank->lock, flags);
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gpio_free(gpio);
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}
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/*
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@ -1458,6 +1438,8 @@ static int __init _omap_gpio_init(void)
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/* REVISIT eventually switch from OMAP-specific gpio structs
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* over to the generic ones
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*/
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bank->chip.request = omap_gpio_request;
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bank->chip.free = omap_gpio_free;
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bank->chip.direction_input = gpio_input;
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bank->chip.get = gpio_get;
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bank->chip.direction_output = gpio_output;
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@ -1726,9 +1708,6 @@ static int __init omap_gpio_sysinit(void)
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return ret;
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}
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EXPORT_SYMBOL(omap_request_gpio);
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EXPORT_SYMBOL(omap_free_gpio);
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arch_initcall(omap_gpio_sysinit);
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@ -71,8 +71,6 @@
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IH_GPIO_BASE + (nr))
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extern int omap_gpio_init(void); /* Call from board init only */
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extern int omap_request_gpio(int gpio);
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extern void omap_free_gpio(int gpio);
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extern void omap2_gpio_prepare_for_retention(void);
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extern void omap2_gpio_resume_after_retention(void);
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extern void omap_set_gpio_debounce(int gpio, int enable);
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@ -89,6 +87,16 @@ extern void omap_set_gpio_debounce_time(int gpio, int enable);
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#include <linux/errno.h>
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#include <asm-generic/gpio.h>
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static inline int omap_request_gpio(int gpio)
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{
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return gpio_request(gpio, "FIXME");
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}
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static inline void omap_free_gpio(int gpio)
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{
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gpio_free(gpio);
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}
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static inline int gpio_get_value(unsigned gpio)
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{
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return __gpio_get_value(gpio);
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