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| author | Rafael J. Wysocki <rjw@rjwysocki.net> | 2015-03-09 17:03:07 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-03-09 17:05:31 -0700 |
| commit | f13b2065de8147a1652b830ea5db961cf80c09df (patch) | |
| tree | b54de849a839be23fee08b11515786a14f50ce42 /drivers/input | |
| parent | 91c68a7c1d92b48287f2f3111a9b09b26a263d3f (diff) | |
| download | talos-obmc-linux-f13b2065de8147a1652b830ea5db961cf80c09df.tar.gz talos-obmc-linux-f13b2065de8147a1652b830ea5db961cf80c09df.zip | |
Input: i8042 - allow KBD and AUX ports to wake up from suspend-to-idle
While registering serio device for i8042, mark them as wakeup-capable
and check their user space wakeup settings in i8042_pm_suspend() and
i8042_pm_resume() to enable or disable, respectively, their interrupts
to wake up the system.
This makes it possible to use the PC keyboard to wake up the system
from suspend-to-idle, among other things, after writing "enabled" to
the keyboard serio device's power/wakeup sysfs attribute.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/serio/i8042.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 986a71c614b0..cb5ece77fd7d 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -1162,13 +1162,32 @@ static int i8042_controller_resume(bool force_reset) static int i8042_pm_suspend(struct device *dev) { + int i; + i8042_controller_reset(true); + /* Set up serio interrupts for system wakeup. */ + for (i = 0; i < I8042_NUM_PORTS; i++) { + struct serio *serio = i8042_ports[i].serio; + + if (serio && device_may_wakeup(&serio->dev)) + enable_irq_wake(i8042_ports[i].irq); + } + return 0; } static int i8042_pm_resume(struct device *dev) { + int i; + + for (i = 0; i < I8042_NUM_PORTS; i++) { + struct serio *serio = i8042_ports[i].serio; + + if (serio && device_may_wakeup(&serio->dev)) + disable_irq_wake(i8042_ports[i].irq); + } + /* * On resume from S2R we always try to reset the controller * to bring it in a sane state. (In case of S2D we expect @@ -1300,13 +1319,16 @@ static void __init i8042_register_ports(void) int i; for (i = 0; i < I8042_NUM_PORTS; i++) { - if (i8042_ports[i].serio) { + struct serio *serio = i8042_ports[i].serio; + + if (serio) { printk(KERN_INFO "serio: %s at %#lx,%#lx irq %d\n", - i8042_ports[i].serio->name, + serio->name, (unsigned long) I8042_DATA_REG, (unsigned long) I8042_COMMAND_REG, i8042_ports[i].irq); - serio_register_port(i8042_ports[i].serio); + serio_register_port(serio); + device_set_wakeup_capable(&serio->dev, true); } } } |
