diff options
Diffstat (limited to 'drivers/gpio/gpio-tegra.c')
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 30 |
1 files changed, 11 insertions, 19 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 94396caaca75..47dbd19751d0 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -22,7 +22,7 @@ #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/io.h> -#include <linux/gpio.h> +#include <linux/gpio/driver.h> #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/module.h> @@ -207,7 +207,7 @@ static int tegra_gpio_get_direction(struct gpio_chip *chip, oe = tegra_gpio_readl(tgi, GPIO_OE(tgi, offset)); - return (oe & pin_mask) ? GPIOF_DIR_OUT : GPIOF_DIR_IN; + return !(oe & pin_mask); } static int tegra_gpio_set_debounce(struct gpio_chip *chip, unsigned int offset, @@ -323,13 +323,6 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type) return -EINVAL; } - ret = gpiochip_lock_as_irq(&tgi->gc, gpio); - if (ret) { - dev_err(tgi->dev, - "unable to lock Tegra GPIO %u as IRQ\n", gpio); - return ret; - } - spin_lock_irqsave(&bank->lvl_lock[port], flags); val = tegra_gpio_readl(tgi, GPIO_INT_LVL(tgi, gpio)); @@ -342,6 +335,14 @@ static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type) tegra_gpio_mask_write(tgi, GPIO_MSK_OE(tgi, gpio), gpio, 0); tegra_gpio_enable(tgi, gpio); + ret = gpiochip_lock_as_irq(&tgi->gc, gpio); + if (ret) { + dev_err(tgi->dev, + "unable to lock Tegra GPIO %u as IRQ\n", gpio); + tegra_gpio_disable(tgi, gpio); + return ret; + } + if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) irq_set_handler_locked(d, handle_level_irq); else if (type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)) @@ -550,13 +551,6 @@ static const struct dev_pm_ops tegra_gpio_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(tegra_gpio_suspend, tegra_gpio_resume) }; -/* - * This lock class tells lockdep that GPIO irqs are in a different category - * than their parents, so it won't report false recursion. - */ -static struct lock_class_key gpio_lock_class; -static struct lock_class_key gpio_request_class; - static int tegra_gpio_probe(struct platform_device *pdev) { struct tegra_gpio_info *tgi; @@ -661,8 +655,6 @@ static int tegra_gpio_probe(struct platform_device *pdev) bank = &tgi->bank_info[GPIO_BANK(gpio)]; - irq_set_lockdep_class(irq, &gpio_lock_class, - &gpio_request_class); irq_set_chip_data(irq, bank); irq_set_chip_and_handler(irq, &tgi->ic, handle_simple_irq); } @@ -720,4 +712,4 @@ static int __init tegra_gpio_init(void) { return platform_driver_register(&tegra_gpio_driver); } -postcore_initcall(tegra_gpio_init); +subsys_initcall(tegra_gpio_init); |