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authorEric Miao <eric.miao@marvell.com>2009-01-20 12:09:06 +0800
committerEric Miao <eric.miao@marvell.com>2009-03-23 10:11:33 +0800
commit38f539a608c9a3b40b30f1892bd5f9a38f4e5ffe (patch)
treefeb9c3ee23fe75151f73e8916c1afeb7c562e0dd /arch/arm/mach-pxa/include
parentbd5ce4332328c1fe473690a86b2e6a4157be038f (diff)
[ARM] pxa: move common GPIO handling code into plat-pxa
1. add common GPIO handling code into [arch/arm/plat-pxa] 2. common code in <mach/gpio.h> moved into <plat/gpio.h>, new processors should implement its own <mach/gpio.h>, provide the following required definitions and '#include <plat/gpio.h>' in the end: - GPIO_REGS_VIRT for mapped virtual address of the GPIO registers' physical I/O memory - macros of GPLR(), GPSR(), GPDR() for constant optimization for functions gpio_{set,get}_value() (so that bit-bang code can still have tolerable performance) - NR_BUILTIN_GPIO for the number of onchip GPIO - definitions of __gpio_is_inverted() and __gpio_is_occupied(), they can be either macros or inlined functions Signed-off-by: Eric Miao <eric.miao@marvell.com>
Diffstat (limited to 'arch/arm/mach-pxa/include')
-rw-r--r--arch/arm/mach-pxa/include/mach/gpio.h32
1 files changed, 1 insertions, 31 deletions
diff --git a/arch/arm/mach-pxa/include/mach/gpio.h b/arch/arm/mach-pxa/include/mach/gpio.h
index c72c89a2285..b024a8b3743 100644
--- a/arch/arm/mach-pxa/include/mach/gpio.h
+++ b/arch/arm/mach-pxa/include/mach/gpio.h
@@ -99,40 +99,12 @@
#define GAFR(x) GPIO_REG(0x54 + (((x) & 0x70) >> 2))
-/* NOTE: some PXAs have fewer on-chip GPIOs (like PXA255, with 85).
- * Those cases currently cause holes in the GPIO number space, the
- * actual number of the last GPIO is recorded by 'pxa_last_gpio'.
- */
-extern int pxa_last_gpio;
-
#define NR_BUILTIN_GPIO 128
-static inline int gpio_get_value(unsigned gpio)
-{
- if (__builtin_constant_p(gpio) && (gpio < NR_BUILTIN_GPIO))
- return GPLR(gpio) & GPIO_bit(gpio);
- else
- return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned gpio, int value)
-{
- if (__builtin_constant_p(gpio) && (gpio < NR_BUILTIN_GPIO)) {
- if (value)
- GPSR(gpio) = GPIO_bit(gpio);
- else
- GPCR(gpio) = GPIO_bit(gpio);
- } else {
- __gpio_set_value(gpio, value);
- }
-}
-
-#define gpio_cansleep __gpio_cansleep
#define gpio_to_bank(gpio) ((gpio) >> 5)
#define gpio_to_irq(gpio) IRQ_GPIO(gpio)
#define irq_to_gpio(irq) IRQ_TO_GPIO(irq)
-
#ifdef CONFIG_CPU_PXA26x
/* GPIO86/87/88/89 on PXA26x have their direction bits in GPDR2 inverted,
* as well as their Alternate Function value being '1' for GPIO in GAFRx.
@@ -165,7 +137,5 @@ static inline int __gpio_is_occupied(unsigned gpio)
return GPDR(gpio) & GPIO_bit(gpio);
}
-typedef int (*set_wake_t)(unsigned int irq, unsigned int on);
-
-extern void pxa_init_gpio(int mux_irq, int start, int end, set_wake_t fn);
+#include <plat/gpio.h>
#endif