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SubjectRe: Vibrations on Droid 4?
Hi!

> > Its parent is gpio@4805d000 , and that one seems to be present.
> >
> > user@devuan:/sys/bus/platform/devices$ ls 4805d000.gpio
> > driver driver_override gpio
> > gpiochip5 modalias of_node power subsystem uevent
>
> Sorry, something went wrong with merging this. The parent
> of ti,omap-dmtimer-pwm and pwm-vibrator should be / and
> not gpio6.

Ok, got it to probe... after dts fix and adding EPROBE_DEFFER to
driver.

Still can't get it to actually vibrate.

user@devuan:/sys/bus/platform/drivers/pwm-vibrator/vibrator$ sudo fftest /dev/input/event3
Force feedback test program.
HOLD FIRMLY YOUR WHEEL OR JOYSTICK TO PREVENT DAMAGES

Device /dev/input/event3 opened
Features:
* Absolute axes:
[00 00 00 00 00 00 00 00 ]
* Relative axes:
[00 00 ]
* Force feedback effects types: Periodic, Rumble, Gain,
Force feedback periodic effects: Square, Triangle, Sine,
[00 00 00 00 00 00 00 00 00 00 03 07 01 00 00 00 ]
* Number of simultaneous effects: 16

Setting master gain to 75% ... OK
Uploading effect #0 (Periodic sinusoidal) ... OK (id 0)
Uploading effect #1 (Constant) ... Error: Invalid argument
Uploading effect #2 (Spring) ... Error: Invalid argument
Uploading effect #3 (Damper) ... Error: Invalid argument
Uploading effect #4 (Strong rumble, with heavy motor) ... OK (id 1)
Uploading effect #5 (Weak rumble, with light motor) ... OK (id 2)
Enter effect number, -1 to exit
5
Now Playing: Weak Rumble
Enter effect number, -1 to exit

0
Now Playing: Sine vibration
Enter effect number, -1 to exit
5
Now Playing: Weak Rumble
Enter effect number, -1 to exit
^C



diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts b/arch/arm/boot/dts/omap4-droid4-xt894.dts
index 45305e8..c27fc87 100644
--- a/arch/arm/boot/dts/omap4-droid4-xt894.dts
+++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts
@@ -159,13 +159,7 @@

dais = <&mcbsp2_port>, <&mcbsp3_port>;
};
-};
-
-&dss {
- status = "okay";
-};

-&gpio6 {
pwm8: dmtimer-pwm-8 {
pinctrl-names = "default";
pinctrl-0 = <&vibrator_direction_pin>;
@@ -192,7 +186,10 @@
pwm-names = "enable", "direction";
direction-duty-cycle-ns = <10000000>;
};
+};

+&dss {
+ status = "okay";
};

&dsi1 {
diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c
index 665da3c..debeb70 100644
--- a/drivers/pwm/pwm-omap-dmtimer.c
+++ b/drivers/pwm/pwm-omap-dmtimer.c
@@ -265,7 +271,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
timer_pdata = dev_get_platdata(&timer_pdev->dev);
if (!timer_pdata) {
dev_err(&pdev->dev, "dmtimer pdata structure NULL\n");
- ret = -EINVAL;
+ ret = -EPROBE_DEFER;
goto put;
}


--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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