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Index: linux-3.12.13/arch/arm/mach-at91/gpio.c
===================================================================
--- linux-3.12.13.orig/arch/arm/mach-at91/gpio.c 2014-02-22 15:32:50.000000000 -0600
+++ linux-3.12.13/arch/arm/mach-at91/gpio.c 2014-03-07 09:13:09.931501303 -0600
@@ -294,6 +294,25 @@
}
EXPORT_SYMBOL(at91_set_gpio_output);
+/*
+ * configure pin for output and enable/disable pullup
+ */
+int __init_or_module at91_set_gpio_output_with_pullup(unsigned pin, int value, int use_pullup)
+{
+ void __iomem *pio = pin_to_controller(pin);
+ unsigned mask = pin_to_mask(pin);
+
+ if (!pio)
+ return -EINVAL;
+
+ __raw_writel(mask, pio + PIO_IDR);
+ __raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR));
+ __raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR));
+ __raw_writel(mask, pio + PIO_OER);
+ __raw_writel(mask, pio + PIO_PER);
+ return 0;
+}
+EXPORT_SYMBOL(at91_set_gpio_output_with_pullup);
/*
* enable/disable the glitch filter; mostly used with IRQ handling.
Index: linux-3.12.13/arch/arm/mach-at91/include/mach/gpio.h
===================================================================
--- linux-3.12.13.orig/arch/arm/mach-at91/include/mach/gpio.h 2014-02-22 15:32:50.000000000 -0600
+++ linux-3.12.13/arch/arm/mach-at91/include/mach/gpio.h 2014-03-07 09:13:39.331501866 -0600
@@ -195,6 +195,7 @@
extern int __init_or_module at91_set_D_periph(unsigned pin, int use_pullup);
extern int __init_or_module at91_set_gpio_input(unsigned pin, int use_pullup);
extern int __init_or_module at91_set_gpio_output(unsigned pin, int value);
+extern int __init_or_module at91_set_gpio_output_with_pullup(unsigned pin, int value, int use_pullup);
extern int __init_or_module at91_set_deglitch(unsigned pin, int is_on);
extern int __init_or_module at91_set_debounce(unsigned pin, int is_on, int div);
extern int __init_or_module at91_set_multi_drive(unsigned pin, int is_on);
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