Hi,
I'm using Kernel 4.9.59 and came across a problem using TPS65218 gpio3 with
the gpio-poweroff driver.
In the device tree I have configured the gpio for open-drain:
gpio_poweroff {
compatible = "gpio-poweroff";
gpios = <&tps65218_gpio 2 GPIO_OPEN_DRAIN>;
};
This is the result:
[ 3.075343] omap_i2c 44e0b000.i2c: bus 0 rev0.12 at 100 kHz
[ 3.081907] tps65218-gpio tps65218-gpio.1.auto: GPO3 works only as open
drain
[ 3.089262] poweroff-gpio: probe of gpio_poweroff failed with error -22
It seem that there was a change in gpiolib that forbids any checks on the
gpio flags inside the request callback:
https://patchwork.kernel.org/patch/9247097/
The gpio-tps65218 driver is actually mentioned doing this.
After removing the sanity checks in tps65218_gpio_request(), the gpio is
working properly with gpio-poweroff. I'm not sure if this is the solution.
Regards,
Ralf
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