On Sat, Dec 19, 2015 at 10:17:09PM +0100, Clement Calmels wrote:
> On Wed, 16 Dec 2015 14:44:08 -0800
> Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote:
>
> > When lighting up the segment identifying wireless controller, Instead
> > of sending command directly to the controller, let's do it via LED
> > API (usinf led_set_brightness) so that LED object state is in sync
> > with controller state and we'll light up the correct segment on
> > resume as well.
> >
> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> > ---
> >
> > I do not have the hardware so please try this out.
> >
> > drivers/input/joystick/xpad.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/input/joystick/xpad.c
> > b/drivers/input/joystick/xpad.c index 36328b3..00a766b 100644
> > --- a/drivers/input/joystick/xpad.c
> > +++ b/drivers/input/joystick/xpad.c
> > @@ -1118,7 +1118,7 @@ static void xpad_send_led_command(struct
> > usb_xpad *xpad, int command) */
> > static void xpad_identify_controller(struct usb_xpad *xpad)
> > {
> > - xpad_send_led_command(xpad, (xpad->pad_nr % 4) + 2);
> > + led_set_brightness(&xpad->led->led_cdev, (xpad->pad_nr % 4)
> > + 2); }
> >
> > static void xpad_led_set(struct led_classdev *led_cdev,
>
> Hi Dimitri,
Hi Clement,
>
> My hardware: two wireless xpad 360 using a single usb receiver.
>
> Power on the first gamepad => light the "1" led.
> Power on the second gamepad => light the "2" led.
>
> Suspend the PC (systemctl suspend): the two gamepads are "disconnected"
> => blinking circle.
>
> Resume the PC, the two gamepads keep blinking but are working (tested
> with jstest).
>
> Power off and on the gamepad => still blinking.
> Reload (rmmod/modprobe) the xpad module => still blinking.
>
> That said, without your patch, the behavior is exactly the same.
> It seems that the suspend/resume broke the led feature. Even using
> the /sys/class/leds/xpad0/brigthness sysfs entry does not work.
>
OK, so the patch does work (the device is still correctly identified),
but resume requires additional patches. Could you try 'xpad' branch of
my tree on kernel.org [1] and let me know if it works for you?
Thanks!
--
Dmitry
[1] git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git
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