[ARM] 3867/1: AT91 GPIO update

This patch makes the AT91 gpio.c support processor-generic (AT91RM9200
and AT91SAM9xxx).  The GPIO controllers supported by a particular AT91
processor are defined in the processor-specific file and are registered
with gpio.c at startup.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 37 insertions, 2 deletions

diff --git a/arch/arm/mach-at91rm9200/at91rm9200.c b/arch/arm/mach-at91rm9200/at91rm9200.c
index ae04cbdf0bff..c32d0c996f90 100644
--- a/arch/arm/mach-at91rm9200/at91rm9200.c
+++ b/arch/arm/mach-at91rm9200/at91rm9200.c
@@ -243,11 +243,34 @@ static void __init at91rm9200_register_clocks(void)
         clk_register(&pck3);
 }
 
+/* --------------------------------------------------------------------
+ *  GPIO
+ * -------------------------------------------------------------------- */
+
+static struct at91_gpio_bank at91rm9200_gpio[] = {
+        {
+                .id             = AT91RM9200_ID_PIOA,
+                .offset         = AT91_PIOA,
+                .clock          = &pioA_clk,
+        }, {
+                .id             = AT91RM9200_ID_PIOB,
+                .offset         = AT91_PIOB,
+                .clock          = &pioB_clk,
+        }, {
+                .id             = AT91RM9200_ID_PIOC,
+                .offset         = AT91_PIOC,
+                .clock          = &pioC_clk,
+        }, {
+                .id             = AT91RM9200_ID_PIOD,
+                .offset         = AT91_PIOD,
+                .clock          = &pioD_clk,
+        }
+};
 
 /* --------------------------------------------------------------------
  *  AT91RM9200 processor initialization
  * -------------------------------------------------------------------- */
-void __init at91rm9200_initialize(unsigned long main_clock)
+void __init at91rm9200_initialize(unsigned long main_clock, unsigned short banks)
 {
         /* Map peripherals */
         iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
@@ -257,8 +280,16 @@ void __init at91rm9200_initialize(unsigned long main_clock)
 
         /* Register the processor-specific clocks */
         at91rm9200_register_clocks();
+
+        /* Initialize GPIO subsystem */
+        at91_gpio_init(at91rm9200_gpio, banks);
 }
 
+
+/* --------------------------------------------------------------------
+ *  Interrupt initialization
+ * -------------------------------------------------------------------- */
+
 /*
  * The default interrupt priority levels (0 = lowest, 7 = highest).
  */
@@ -297,10 +328,14 @@ static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
         0       /* Advanced Interrupt Controller (IRQ6) */
 };
 
-void __init at91rm9200_init_irq(unsigned int priority[NR_AIC_IRQS])
+void __init at91rm9200_init_interrupts(unsigned int priority[NR_AIC_IRQS])
 {
         if (!priority)
                 priority = at91rm9200_default_irq_priority;
 
+        /* Initialize the AIC interrupt controller */
         at91_aic_init(priority);
+
+        /* Enable GPIO interrupts */
+        at91_gpio_irq_setup();
 }