diff options
| author | eric miao <eric.y.miao@gmail.com> | 2007-08-29 13:18:47 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-10-13 00:15:32 +0400 |
| commit | 30f0b40844e5add7ad879e2f5939ff498f72f3e6 (patch) | |
| tree | c899a6cc6b9e3a0d998b6b5e15d3208eae51dcfb | |
| parent | 37c2f779a4eabf7c6a39e6f9ded0ec3471ed5995 (diff) | |
| download | linux-30f0b40844e5add7ad879e2f5939ff498f72f3e6.tar.xz | |
[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 <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 3 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/generic.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/irq.c | 2 | ||||
| -rw-r--r-- | include/asm-arm/arch-pxa/irqs.h | 6 |
4 files changed, 5 insertions, 7 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 1c5413fc6e74..eed95eaf58cd 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 5b11741cccff..25bd9bf727b6 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 ae2ae08032d7..3d95442d4168 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; diff --git a/include/asm-arm/arch-pxa/irqs.h b/include/asm-arm/arch-pxa/irqs.h index a07fe0f928cd..1bcc7632b46c 100644 --- a/include/asm-arm/arch-pxa/irqs.h +++ b/include/asm-arm/arch-pxa/irqs.h @@ -66,12 +66,6 @@ #define IRQ_TO_GPIO_2_x(i) ((i) - PXA_GPIO_IRQ_BASE) #define IRQ_TO_GPIO(i) (((i) < IRQ_GPIO(2)) ? ((i) - IRQ_GPIO0) : IRQ_TO_GPIO_2_x(i)) -#if defined(CONFIG_PXA25x) -#define PXA_LAST_GPIO 84 -#elif defined(CONFIG_PXA27x) -#define PXA_LAST_GPIO 127 -#endif - /* * The next 16 interrupts are for board specific purposes. Since * the kernel can only run on one machine at a time, we can re-use |