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ARM: pxa: recognize gpio number and type 

Use cpuid to recognize the gpio number and type. CPU_PXA26x is the
special case since we can't identify it by cpuid.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
hifive-unleashed-5.1
Haojian Zhuang 2011-10-14 16:44:07 +08:00
parent 4929f5a8a9
commit 478e223cc3
1 changed files with 40 additions and 1 deletions
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41
drivers/gpio/gpio-pxa.c
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@ -347,12 +347,51 @@ static struct irq_chip pxa_muxed_gpio_chip = {
.irq_set_type = pxa_gpio_irq_type,
};
static int pxa_gpio_nums(void)
{
int count = 0;
#ifdef CONFIG_ARCH_PXA
if (cpu_is_pxa25x()) {
#ifdef CONFIG_CPU_PXA26x
count = 89;
gpio_type = PXA26X_GPIO;
#elif defined(CONFIG_PXA25x)
count = 84;
gpio_type = PXA26X_GPIO;
#endif /* CONFIG_CPU_PXA26x */
} else if (cpu_is_pxa27x()) {
count = 120;
gpio_type = PXA27X_GPIO;
} else if (cpu_is_pxa93x() || cpu_is_pxa95x()) {
count = 191;
gpio_type = PXA93X_GPIO;
} else if (cpu_is_pxa3xx()) {
count = 127;
gpio_type = PXA3XX_GPIO;
}
#endif /* CONFIG_ARCH_PXA */
#ifdef CONFIG_ARCH_MMP
if (cpu_is_pxa168() || cpu_is_pxa910()) {
count = 127;
gpio_type = MMP_GPIO;
} else if (cpu_is_mmp2()) {
count = 191;
gpio_type = MMP2_GPIO;
}
#endif /* CONFIG_ARCH_MMP */
return count;
}
void __init pxa_init_gpio(int mux_irq, int start, int end, set_wake_t fn)
{
struct pxa_gpio_chip *c;
int gpio, irq;
pxa_last_gpio = end;
pxa_last_gpio = pxa_gpio_nums();
if (!pxa_last_gpio)
return;
/* Initialize GPIO chips */
pxa_init_gpio_chip(end);