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authorLinus Walleij <linus.walleij@linaro.org>2013-09-09 16:53:02 +0400
committerLinus Walleij <linus.walleij@linaro.org>2013-09-21 01:04:13 +0400
commitafc3b79f5dbddd4ab210beb9cc6da102a1032b89 (patch)
tree61efa3cbc92c0535deed9f9c6ceaaeb1a2c836c9 /arch
parent7111f8780fcf770d8624d758fd240e585adf7d3c (diff)
downloadlinux-afc3b79f5dbddd4ab210beb9cc6da102a1032b89.tar.xz
ARM: iop32x: read N2100 power key using gpiolib
Refrain from using the custom gpio_line_get() to read the power key on the N2100, use the gpiolib function gpio_get() instead. Also request the line in the GPIOs initicall, and move the poll timer setup to that inicall so the gpio chip is available before we request this GPIO and start to poll it. Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-iop32x/n2100.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
index 6bace5bc7ebb..bc40a97050a1 100644
--- a/arch/arm/mach-iop32x/n2100.c
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -306,7 +306,7 @@ static struct timer_list power_button_poll_timer;
static void power_button_poll(unsigned long dummy)
{
- if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
+ if (gpio_get_value(N2100_POWER_BUTTON) == 0) {
ctrl_alt_del();
return;
}
@@ -325,6 +325,20 @@ static int __init n2100_request_gpios(void)
ret = gpio_request(N2100_HARDWARE_RESET, "reset");
if (ret)
pr_err("could not request reset GPIO\n");
+
+ ret = gpio_request(N2100_POWER_BUTTON, "power");
+ if (ret)
+ pr_err("could not request power GPIO\n");
+ else {
+ ret = gpio_direction_input(N2100_POWER_BUTTON);
+ if (ret)
+ pr_err("could not set power GPIO as input\n");
+ }
+ /* Set up power button poll timer */
+ init_timer(&power_button_poll_timer);
+ power_button_poll_timer.function = power_button_poll;
+ power_button_poll_timer.expires = jiffies + (HZ / 10);
+ add_timer(&power_button_poll_timer);
return 0;
}
device_initcall(n2100_request_gpios);
@@ -341,11 +355,6 @@ static void __init n2100_init_machine(void)
ARRAY_SIZE(n2100_i2c_devices));
pm_power_off = n2100_power_off;
-
- init_timer(&power_button_poll_timer);
- power_button_poll_timer.function = power_button_poll;
- power_button_poll_timer.expires = jiffies + (HZ / 10);
- add_timer(&power_button_poll_timer);
}
MACHINE_START(N2100, "Thecus N2100")