diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-03-26 17:29:40 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-26 17:29:40 (GMT) |
| commit | 5a54bd1307471c1cd0521402fe65e2057edcab2f (patch) | |
| tree | 25fb6a543db4ccc11b6d5662ed2e7facfce39ae7 /arch/arm/mach-at91/gpio.c | |
| parent | f9f35677d81adb0feedcd6e0e661784805c8facd (diff) | |
| parent | 8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84 (diff) | |
| download | linux-fsl-qoriq-5a54bd1307471c1cd0521402fe65e2057edcab2f.tar.xz | |
Merge commit 'v2.6.29' into core/header-fixes
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 9b0447c..2f7d497 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; } |