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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-09-06 23:19:02 -0400
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-09-22 03:51:01 -0400
commit96706600de83966812b01a3cb310a13da2a1a4e9 (patch)
tree808954056fbfa9e5f98aa103068abbb9a1109416 /arch/avr32/boards
parent7066412488281fd1c201dceb22a0dfe467012f76 (diff)
ngw100: export J15 through sysfs
The NGW100 board has jumper J15 (near the reset button) which is unused. This patch exports it through the GPIO sysfs support (as /sys/class/gpio/gpio62/value) so that it's easily queried by boot scripts or whatever might want to know if the jumper has been installed (value = 0) or not (value = 1, "default"). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> [haavard.skinnemoen@atmel.com: add missing include] Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Diffstat (limited to 'arch/avr32/boards')
-rw-r--r--arch/avr32/boards/atngw100/setup.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c
index b8286f1ce854..abcb0d9559b1 100644
--- a/arch/avr32/boards/atngw100/setup.c
+++ b/arch/avr32/boards/atngw100/setup.c
@@ -9,6 +9,7 @@
9 */ 9 */
10#include <linux/clk.h> 10#include <linux/clk.h>
11#include <linux/etherdevice.h> 11#include <linux/etherdevice.h>
12#include <linux/gpio.h>
12#include <linux/irq.h> 13#include <linux/irq.h>
13#include <linux/i2c.h> 14#include <linux/i2c.h>
14#include <linux/i2c-gpio.h> 15#include <linux/i2c-gpio.h>
@@ -204,6 +205,15 @@ postcore_initcall(atngw100_init);
204 205
205static int __init atngw100_arch_init(void) 206static int __init atngw100_arch_init(void)
206{ 207{
208 /* PB30 is the otherwise unused jumper on the mainboard, with an
209 * external pullup; the jumper grounds it. Use it however you
210 * like, including letting U-Boot or Linux tweak boot sequences.
211 */
212 at32_select_gpio(GPIO_PIN_PB(30), 0);
213 gpio_request(GPIO_PIN_PB(30), "j15");
214 gpio_direction_input(GPIO_PIN_PB(30));
215 gpio_export(GPIO_PIN_PB(30), false);
216
207 /* set_irq_type() after the arch_initcall for EIC has run, and 217 /* set_irq_type() after the arch_initcall for EIC has run, and
208 * before the I2C subsystem could try using this IRQ. 218 * before the I2C subsystem could try using this IRQ.
209 */ 219 */