diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/gpio/gpio-pl061.c | 80 |
2 files changed, 19 insertions, 62 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 51c782532687..92d8e9a064b4 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -247,6 +247,7 @@ config GPIO_PL061 bool "PrimeCell PL061 GPIO support" depends on ARM_AMBA select IRQ_DOMAIN + select GPIOLIB_IRQCHIP help Say yes here to support the PrimeCell PL061 GPIO device diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c index d2a0ad5fc752..b0f475243cef 100644 --- a/drivers/gpio/gpio-pl061.c +++ b/drivers/gpio/gpio-pl061.c @@ -15,7 +15,6 @@ #include <linux/io.h> #include <linux/ioport.h> #include <linux/irq.h> -#include <linux/irqdomain.h> #include <linux/irqchip/chained_irq.h> #include <linux/bitops.h> #include <linux/workqueue.h> @@ -53,7 +52,6 @@ struct pl061_gpio { spinlock_t lock; void __iomem *base; - struct irq_domain *domain; struct gpio_chip gc; #ifdef CONFIG_PM @@ -137,16 +135,10 @@ static void pl061_set_value(struct gpio_chip *gc, unsigned offset, int value) writeb(!!value << offset, chip->base + (1 << (offset + 2))); } -static int pl061_to_irq(struct gpio_chip *gc, unsigned offset) -{ - struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc); - - return irq_create_mapping(chip->domain, offset); -} - static int pl061_irq_type(struct irq_data *d, unsigned trigger) { - struct pl061_gpio *chip = irq_data_get_irq_chip_data(d); + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc); int offset = irqd_to_hwirq(d); unsigned long flags; u8 gpiois, gpioibe, gpioiev; @@ -194,7 +186,8 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc) { unsigned long pending; int offset; - struct pl061_gpio *chip = irq_desc_get_handler_data(desc); + struct gpio_chip *gc = irq_desc_get_handler_data(desc); + struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc); struct irq_chip *irqchip = irq_desc_get_chip(desc); chained_irq_enter(irqchip, desc); @@ -203,7 +196,8 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc) writeb(pending, chip->base + GPIOIC); if (pending) { for_each_set_bit(offset, &pending, PL061_GPIO_NR) - generic_handle_irq(pl061_to_irq(&chip->gc, offset)); + generic_handle_irq(irq_find_mapping(gc->irqdomain, + offset)); } chained_irq_exit(irqchip, desc); @@ -211,7 +205,8 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc) static void pl061_irq_mask(struct irq_data *d) { - struct pl061_gpio *chip = irq_data_get_irq_chip_data(d); + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc); u8 mask = 1 << (irqd_to_hwirq(d) % PL061_GPIO_NR); u8 gpioie; @@ -223,7 +218,8 @@ static void pl061_irq_mask(struct irq_data *d) static void pl061_irq_unmask(struct irq_data *d) { - struct pl061_gpio *chip = irq_data_get_irq_chip_data(d); + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc); u8 mask = 1 << (irqd_to_hwirq(d) % PL061_GPIO_NR); u8 gpioie; @@ -233,50 +229,11 @@ static void pl061_irq_unmask(struct irq_data *d) spin_unlock(&chip->lock); } -static int pl061_irq_reqres(struct irq_data *d) -{ - struct pl061_gpio *chip = irq_data_get_irq_chip_data(d); - - if (gpio_lock_as_irq(&chip->gc, irqd_to_hwirq(d))) { - dev_err(chip->gc.dev, - "unable to lock HW IRQ %lu for IRQ\n", - irqd_to_hwirq(d)); - return -EINVAL; - } - return 0; -} - -static void pl061_irq_relres(struct irq_data *d) -{ - struct pl061_gpio *chip = irq_data_get_irq_chip_data(d); - - gpio_unlock_as_irq(&chip->gc, irqd_to_hwirq(d)); -} - static struct irq_chip pl061_irqchip = { .name = "pl061", .irq_mask = pl061_irq_mask, .irq_unmask = pl061_irq_unmask, .irq_set_type = pl061_irq_type, - .irq_request_resources = pl061_irq_reqres, - .irq_release_resources = pl061_irq_relres, -}; - -static int pl061_irq_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hwirq) -{ - struct pl061_gpio *chip = d->host_data; - - irq_set_chip_and_handler(irq, &pl061_irqchip, handle_simple_irq); - irq_set_chip_data(irq, chip); - irq_set_irq_type(irq, IRQ_TYPE_NONE); - - return 0; -} - -static const struct irq_domain_ops pl061_domain_ops = { - .map = pl061_irq_map, - .xlate = irq_domain_xlate_twocell, }; static int pl061_probe(struct amba_device *adev, const struct amba_id *id) @@ -314,7 +271,6 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id) chip->gc.direction_output = pl061_direction_output; chip->gc.get = pl061_get_value; chip->gc.set = pl061_set_value; - chip->gc.to_irq = pl061_to_irq; chip->gc.ngpio = PL061_GPIO_NR; chip->gc.label = dev_name(dev); chip->gc.dev = dev; @@ -334,15 +290,15 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id) return -ENODEV; } - irq_set_chained_handler(irq, pl061_irq_handler); - irq_set_handler_data(irq, chip); - - chip->domain = irq_domain_add_simple(adev->dev.of_node, PL061_GPIO_NR, - irq_base, &pl061_domain_ops, chip); - if (!chip->domain) { - dev_err(&adev->dev, "no irq domain\n"); - return -ENODEV; + ret = gpiochip_irqchip_add(&chip->gc, &pl061_irqchip, + irq_base, handle_simple_irq, + IRQ_TYPE_NONE); + if (ret) { + dev_info(&adev->dev, "could not add irqchip\n"); + return ret; } + gpiochip_set_chained_irqchip(&chip->gc, &pl061_irqchip, + irq, pl061_irq_handler); for (i = 0; i < PL061_GPIO_NR; i++) { if (pdata) { |