ARM: Remove dependency of plat-orion GPIO code on mach directory includes.

This patch makes the various mach dirs that use the plat-orion GPIO
code pass in GPIO-related platform info (GPIO controller base address,
secondary base IRQ number, etc) explicitly, instead of having
plat-orion get those values by including a mach dir include file --
the latter mechanism is problematic if you want to support multiple
ARM platforms in the same kernel image.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>

1 files changed, 6 insertions, 16 deletions

diff --git a/arch/arm/mach-mv78xx0/irq.c b/arch/arm/mach-mv78xx0/irq.c
index 22b4ff893b3c..08da497c39c2 100644
--- a/arch/arm/mach-mv78xx0/irq.c
+++ b/arch/arm/mach-mv78xx0/irq.c
@@ -26,28 +26,18 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
 
 void __init mv78xx0_init_irq(void)
 {
-        int i;
-
-        /* Initialize gpiolib. */
-        orion_gpio_init();
-
         orion_irq_init(0, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF));
         orion_irq_init(32, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF));
         orion_irq_init(64, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_ERR_OFF));
 
         /*
-         * Mask and clear GPIO IRQ interrupts.
+         * Initialize gpiolib for GPIOs 0-31.  (The GPIO interrupt mask
+         * registers for core #1 are at an offset of 0x18 from those of
+         * core #0.)
          */
-        writel(0, GPIO_LEVEL_MASK(0));
-        writel(0, GPIO_EDGE_MASK(0));
-        writel(0, GPIO_EDGE_CAUSE(0));
-
-        for (i = IRQ_MV78XX0_GPIO_START; i < NR_IRQS; i++) {
-                set_irq_chip(i, &orion_gpio_irq_chip);
-                set_irq_handler(i, handle_level_irq);
-                irq_desc[i].status |= IRQ_LEVEL;
-                set_irq_flags(i, IRQF_VALID);
-        }
+        orion_gpio_init(0, 32, GPIO_VIRT_BASE,
+                        mv78xx0_core_index() ? 0x18 : 0,
+                        IRQ_MV78XX0_GPIO_START);
         set_irq_chained_handler(IRQ_MV78XX0_GPIO_0_7, gpio_irq_handler);
         set_irq_chained_handler(IRQ_MV78XX0_GPIO_8_15, gpio_irq_handler);
         set_irq_chained_handler(IRQ_MV78XX0_GPIO_16_23, gpio_irq_handler);