MIPS: JZ4740: GPIO: Use shared irq chip for all gpios

Currently there is one irq_chip per gpio_chip with the only difference
being the name. Since the information whether the irq belong to GPIO
bank A, B, C or D is not that important rewrite the code to simply use
a single irq_chip for all gpio_chips.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2182/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/jz4740/gpio.c b/arch/mips/jz4740/gpio.c
index 1e28b75..9bb0770 100644 (file)
--- a/arch/mips/jz4740/gpio.c
+++ b/arch/mips/jz4740/gpio.c
@@ -86,7 +86,6 @@ struct jz_gpio_chip {
        spinlock_t lock;
 
        struct gpio_chip gpio_chip;
-       struct irq_chip irq_chip;
        struct sys_device sysdev;
 };
 
@@ -435,6 +434,17 @@ static int jz_gpio_irq_set_wake(struct irq_data *data, unsigned int on)
        return 0;
 }
 
+static struct irq_chip jz_gpio_irq_chip = {
+       .name = "GPIO",
+       .irq_mask = jz_gpio_irq_mask,
+       .irq_unmask = jz_gpio_irq_unmask,
+       .irq_ack = jz_gpio_irq_ack,
+       .irq_startup = jz_gpio_irq_startup,
+       .irq_shutdown = jz_gpio_irq_shutdown,
+       .irq_set_type = jz_gpio_irq_set_type,
+       .irq_set_wake = jz_gpio_irq_set_wake,
+};
+
 /*
  * This lock class tells lockdep that GPIO irqs are in a different
  * category than their parents, so it won't report false recursion.
@@ -453,16 +463,6 @@ static struct lock_class_key gpio_lock_class;
                .base = JZ4740_GPIO_BASE_ ## _bank, \
                .ngpio = JZ4740_GPIO_NUM_ ## _bank, \
        }, \
-       .irq_chip =  { \
-               .name = "GPIO Bank " # _bank, \
-               .irq_mask = jz_gpio_irq_mask, \
-               .irq_unmask = jz_gpio_irq_unmask, \
-               .irq_ack = jz_gpio_irq_ack, \
-               .irq_startup = jz_gpio_irq_startup, \
-               .irq_shutdown = jz_gpio_irq_shutdown, \
-               .irq_set_type = jz_gpio_irq_set_type, \
-               .irq_set_wake = jz_gpio_irq_set_wake, \
-       }, \
 }
 
 static struct jz_gpio_chip jz4740_gpio_chips[] = {
@@ -529,7 +529,8 @@ static int jz4740_gpio_chip_init(struct jz_gpio_chip *chip, unsigned int id)
        for (irq = chip->irq_base; irq < chip->irq_base + chip->gpio_chip.ngpio; ++irq) {
                lockdep_set_class(&irq_desc[irq].lock, &gpio_lock_class);
                set_irq_chip_data(irq, chip);
-               set_irq_chip_and_handler(irq, &chip->irq_chip, handle_level_irq);
+               set_irq_chip_and_handler(irq, &jz_gpio_irq_chip,
+                       handle_level_irq);
        }
 
        return 0;