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| author | Andriy Gapon <avg@FreeBSD.org> | 2024-02-18 13:55:20 +0000 |
|---|---|---|
| committer | Andriy Gapon <avg@FreeBSD.org> | 2024-02-18 13:55:20 +0000 |
| commit | b98558e69b0aefbb99120a8a6ca7efbb8cafab5b (patch) | |
| tree | e4ebda876dab343e81878897c9041066a2bbe696 /sys/arm | |
| parent | 2fb174d18a42d1b2965164186843540ee65881ea (diff) | |
| download | src-b98558e69b0aefbb99120a8a6ca7efbb8cafab5b.tar.gz src-b98558e69b0aefbb99120a8a6ca7efbb8cafab5b.zip | |
aw_gpio: temporarily switch to input function if read in eint mode
This is needed for gpiokeys driver that needs to read input state after
receiving an interrupt for either edge.
PR: 248138
MFC after: 1 month
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/allwinner/aw_gpio.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sys/arm/allwinner/aw_gpio.c b/sys/arm/allwinner/aw_gpio.c index cee2cf056f42..6ff0516acb3f 100644 --- a/sys/arm/allwinner/aw_gpio.c +++ b/sys/arm/allwinner/aw_gpio.c @@ -654,18 +654,30 @@ aw_gpio_pin_get_locked(struct aw_gpio_softc *sc,uint32_t pin, unsigned int *val) { uint32_t bank, reg_data; + int32_t func; + int err; AW_GPIO_LOCK_ASSERT(sc); if (pin > sc->conf->padconf->npins) return (EINVAL); + func = aw_gpio_get_function(sc, pin); + if (func == sc->conf->padconf->pins[pin].eint_func) { /* "pl_eintX */ + err = aw_gpio_set_function(sc, pin, AW_GPIO_INPUT); + if (err != 0) + return (err); + } + bank = sc->conf->padconf->pins[pin].port; pin = sc->conf->padconf->pins[pin].pin; reg_data = AW_GPIO_READ(sc, AW_GPIO_GP_DAT(bank)); *val = (reg_data & (1 << pin)) ? 1 : 0; + if (func == sc->conf->padconf->pins[pin].eint_func) + (void)aw_gpio_set_function(sc, pin, func); + return (0); } |