diff options
| author | Alejandro Gonzalez <alex.gonzalez@digi.com> | 2010-06-16 11:32:18 +0200 |
|---|---|---|
| committer | Alejandro Gonzalez <alex.gonzalez@digi.com> | 2010-06-23 11:24:48 +0200 |
| commit | 057b9b859cee72a4e70658ae6e28a1ad1f37bad5 (patch) | |
| tree | 5f4fb8072203c0e8e01af8c42d58a4650b1f51e9 /drivers/base | |
| parent | e7708a44045df4a7b590f45745d6d8b30c41ef7d (diff) | |
GPIO: Make suspend to RAM with GPIO wake up source work
Because the BSP implements GPIOs as system devices, but the sysfs uses
the device model, this is an ugly way of supporting this functionality
without moving the GPIO subsystem to the device model.
Signed-off-by: Alejandro Gonzalez <alex.gonzalez@digi.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/sysfs.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index 596aeecfdffe..0b3e0b7eb7fa 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -6,6 +6,10 @@ #include <linux/string.h> #include "power.h" +#include <asm/mach-types.h> +#include <linux/interrupt.h> +#include <mach/gpio.h> + /* * wakeup - Report/change current wakeup option for device * @@ -72,6 +76,19 @@ wake_store(struct device * dev, struct device_attribute *attr, device_set_wakeup_enable(dev, 0); else return -EINVAL; + + if ( machine_is_ccwmx51js() || machine_is_ccmx51js() ) { + char *name = NULL; + char *ep; + unsigned int gpio; + + /* Check whether this is a GPIO and if so configure it as wake up source */ + if( (name = strstr(dev->kobj.name , "gpio")) ) { + gpio = simple_strtol(name+strlen("gpio"), &ep, 0); + set_irq_wake(gpio_to_irq(gpio),1); + } + } + return n; } |