diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-02-20 11:35:57 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-02-20 11:35:57 +0100 |
commit | 64b36ca7f408e0bd45487c8c28f168f11f3b6dcd (patch) | |
tree | 0b8ed22d46d775f04d441e8c480c12ec297a005b /arch/arm/mach-at91/gpio.c | |
parent | 00a8bf859331e349713274825e6fbf20bf2ac15a (diff) | |
parent | 402a917aca5daca69fcc91f43e6f1e6939cf393b (diff) |
Merge branches 'tracing/function-graph-tracer' and 'linus' into tracing/core
Diffstat (limited to 'arch/arm/mach-at91/gpio.c')
-rw-r--r-- | arch/arm/mach-at91/gpio.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index 9b0447c3d59..2f7d4977dce 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c @@ -490,7 +490,8 @@ postcore_initcall(at91_gpio_debugfs_init); /*--------------------------------------------------------------------------*/ -/* This lock class tells lockdep that GPIO irqs are in a different +/* + * 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; @@ -509,9 +510,6 @@ void __init at91_gpio_irq_setup(void) unsigned id = this->id; unsigned i; - /* enable PIO controller's clock */ - clk_enable(this->clock); - __raw_writel(~0, this->regbase + PIO_IDR); for (i = 0, pin = this->chipbase; i < 32; i++, pin++) { @@ -556,7 +554,14 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks) data->chipbase = PIN_BASE + i * 32; data->regbase = data->offset + (void __iomem *)AT91_VA_BASE_SYS; - /* AT91SAM9263_ID_PIOCDE groups PIOC, PIOD, PIOE */ + /* enable PIO controller's clock */ + clk_enable(data->clock); + + /* + * Some processors share peripheral ID between multiple GPIO banks. + * SAM9263 (PIOC, PIOD, PIOE) + * CAP9 (PIOA, PIOB, PIOC, PIOD) + */ if (last && last->id == data->id) last->next = data; } |