diff options
| author | Haojian Zhuang <haojian.zhuang@marvell.com> | 2011-10-14 12:44:07 +0400 |
|---|---|---|
| committer | Haojian Zhuang <haojian.zhuang@marvell.com> | 2011-11-14 17:07:59 +0400 |
| commit | 478e223cc39ee98f9f9f0c87cb971a2fe0ce8d12 (patch) | |
| tree | 1c0dde3d14ddb0997f5cbaf387d46ae879d94887 /drivers/gpio | |
| parent | 4929f5a8a99f64378659c5658621e45c90c2aaa9 (diff) | |
| download | linux-478e223cc39ee98f9f9f0c87cb971a2fe0ce8d12.tar.xz | |
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>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-pxa.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c index 3e76c588f080..aebc4e8b7fd1 100644 --- a/drivers/gpio/gpio-pxa.c +++ b/drivers/gpio/gpio-pxa.c @@ -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); |