Author: avg
Date: Fri May 24 06:06:42 2019
New Revision: 348228
URL: https://svnweb.freebsd.org/changeset/base/348228
Log:
amdgpio: fix reading status of input pins
AMD FCH GPIO controller uses different bits for setting the output level
and for reporting the input level.
MFC after: 2 weeks
Modified:
head/sys/dev/amdgpio/amdgpio.c
Modified: head/sys/dev/amdgpio/amdgpio.c
==============================================================================
--- head/sys/dev/amdgpio/amdgpio.c Fri May 24 06:02:51 2019
(r348227)
+++ head/sys/dev/amdgpio/amdgpio.c Fri May 24 06:06:42 2019
(r348228)
@@ -264,10 +264,17 @@ amdgpio_pin_get(device_t dev, uint32_t pin, unsigned i
reg = AMDGPIO_PIN_REGISTER(pin);
val = amdgpio_read_4(sc, reg);
- if (val & BIT(OUTPUT_VALUE_OFF))
- *value = GPIO_PIN_HIGH;
- else
- *value = GPIO_PIN_LOW;
+ if ((sc->sc_gpio_pins[pin].gp_flags & GPIO_PIN_OUTPUT) != 0) {
+ if (val & BIT(OUTPUT_VALUE_OFF))
+ *value = GPIO_PIN_HIGH;
+ else
+ *value = GPIO_PIN_LOW;
+ } else {
+ if (val & BIT(PIN_STS_OFF))
+ *value = GPIO_PIN_HIGH;
+ else
+ *value = GPIO_PIN_LOW;
+ }
dprintf("pin %d value 0x%x\n", pin, *value);
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
