From 30f0b40844e5add7ad879e2f5939ff498f72f3e6 Mon Sep 17 00:00:00 2001 From: eric miao Date: Wed, 29 Aug 2007 10:18:47 +0100 Subject: [ARM] 4559/1: pxa: make PXA_LAST_GPIO a run-time variable This definition produces processor specific code in generic function pxa_gpio_mode(), thus creating inconsistencies for support of pxa25x and pxa27x in a single zImage. As David Brownell suggests, make it a run-time variable and initialize at run-time according to the number of GPIOs on the processor. For now the initialization happens in pxa_init_irq_gpio(), since there is already a parameter for that, besides, this is and MUST be earlier than any subsequent calls to pxa_gpio_mode(). Signed-off-by: eric miao Signed-off-by: Russell King --- arch/arm/mach-pxa/generic.c | 3 ++- arch/arm/mach-pxa/generic.h | 1 + arch/arm/mach-pxa/irq.c | 2 ++ 3 files changed, 5 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-pxa') diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 1c5413f..eed95eaf 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -71,6 +71,7 @@ EXPORT_SYMBOL(get_memclk_frequency_10khz); /* * Handy function to set GPIO alternate functions */ +int pxa_last_gpio; int pxa_gpio_mode(int gpio_mode) { @@ -79,7 +80,7 @@ int pxa_gpio_mode(int gpio_mode) int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; int gafr; - if (gpio > PXA_LAST_GPIO) + if (gpio > pxa_last_gpio) return -EINVAL; local_irq_save(flags); diff --git a/arch/arm/mach-pxa/generic.h b/arch/arm/mach-pxa/generic.h index 5b11741..25bd9bf 100644 --- a/arch/arm/mach-pxa/generic.h +++ b/arch/arm/mach-pxa/generic.h @@ -20,6 +20,7 @@ extern void __init pxa27x_init_irq(void); extern void __init pxa_map_io(void); extern unsigned int get_clk_frequency_khz(int info); +extern int pxa_last_gpio; #define SET_BANK(__nr,__start,__size) \ mi->bank[__nr].start = (__start), \ diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c index ae2ae08..3d95442 100644 --- a/arch/arm/mach-pxa/irq.c +++ b/arch/arm/mach-pxa/irq.c @@ -349,6 +349,8 @@ void __init pxa_init_irq_gpio(int gpio_nr) { int irq, i; + pxa_last_gpio = gpio_nr - 1; + /* clear all GPIO edge detects */ for (i = 0; i < gpio_nr; i += 32) { GFER(i) = 0; -- cgit v1.1