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authorEric Miao <eric.miao@marvell.com>2009-01-06 18:06:25 +0800
committerEric Miao <eric.miao@marvell.com>2009-03-09 21:22:37 +0800
commit0d9f768fce67a53b9c2296789129d4dfb3f4996b (patch)
tree5f5cfcfb48c924f6f4eef4a936061722dcb5e441 /arch/arm/mach-pxa/generic.c
parenta58fbcd8ad17ddaa0c7aadbbbd20de4ebc807fa4 (diff)
[ARM] pxa: move pxa_gpio_mode() outside of generic gpio.c
Looks like we have to live with pxa_gpio_mode() for a while, giving its presence is actually making gpio.c not generic enough, let's move it temporarily outside before it can be fully purged. Signed-off-by: Eric Miao <eric.miao@marvell.com>
Diffstat (limited to 'arch/arm/mach-pxa/generic.c')
-rw-r--r--arch/arm/mach-pxa/generic.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 0ccc91c92c4..dc870dd9369 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -28,6 +28,7 @@
#include <mach/pxa-regs.h>
#include <mach/reset.h>
+#include <mach/pxa2xx-gpio.h>
#include "generic.h"
@@ -127,3 +128,33 @@ void __init pxa_map_io(void)
iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
get_clk_frequency_khz(1);
}
+
+/*
+ * Configure pins for GPIO or other functions
+ */
+int pxa_gpio_mode(int gpio_mode)
+{
+ unsigned long flags;
+ int gpio = gpio_mode & GPIO_MD_MASK_NR;
+ int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
+ int gafr;
+
+ if (gpio > pxa_last_gpio)
+ return -EINVAL;
+
+ local_irq_save(flags);
+ if (gpio_mode & GPIO_DFLT_LOW)
+ GPCR(gpio) = GPIO_bit(gpio);
+ else if (gpio_mode & GPIO_DFLT_HIGH)
+ GPSR(gpio) = GPIO_bit(gpio);
+ if (gpio_mode & GPIO_MD_MASK_DIR)
+ GPDR(gpio) |= GPIO_bit(gpio);
+ else
+ GPDR(gpio) &= ~GPIO_bit(gpio);
+ gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
+ GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2));
+ local_irq_restore(flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(pxa_gpio_mode);