int
gpioiic_match(device_t parent, cfdata_t cf, void *aux)
{
struct gpio_attach_args *ga = aux;
if (strcmp(ga->ga_dvname, cf->cf_name))
return 0;
if (ga->ga_offset == -1)
return 0;
/* Check that we have enough pins */
if (gpio_npins(ga->ga_mask) != GPIOIIC_NPINS) {
aprint_debug("%s: invalid pin mask 0x%02x\n", cf->cf_name,
ga->ga_mask);
return 0;
}
return 1;
}
int
gpiopwm_match(device_t parent, cfdata_t cf,
void *aux)
{
struct gpio_attach_args *ga = aux;
if (strcmp(ga->ga_dvname, cf->cf_name))
return 0;
if (ga->ga_offset == -1)
return 0;
/* Check number of pins, must be 1 */
if (gpio_npins(ga->ga_mask) != GPIOPWM_NPINS) {
aprint_debug("%s: invalid pin mask 0x%02x\n", cf->cf_name,
ga->ga_mask);
return 0;
}
return 1;
}
void
gpioow_attach(struct device *parent, struct device *self, void *aux)
{
struct gpioow_softc *sc = (struct gpioow_softc *)self;
struct gpio_attach_args *ga = aux;
struct onewirebus_attach_args oba;
int caps;
/* Check that we have enough pins */
if (gpio_npins(ga->ga_mask) != GPIOOW_NPINS) {
printf(": invalid pin mask\n");
return;
}
/* Map pins */
sc->sc_gpio = ga->ga_gpio;
sc->sc_map.pm_map = sc->__map;
if (gpio_pin_map(sc->sc_gpio, ga->ga_offset, ga->ga_mask,
&sc->sc_map)) {
printf(": can't map pins\n");
return;
}
/* Configure data pin */
caps = gpio_pin_caps(sc->sc_gpio, &sc->sc_map, GPIOOW_PIN_DATA);
if (!(caps & GPIO_PIN_OUTPUT)) {
printf(": data pin is unable to drive output\n");
goto fail;
}
if (!(caps & GPIO_PIN_INPUT)) {
printf(": data pin is unable to read input\n");
goto fail;
}
printf(": DATA[%d]", sc->sc_map.pm_map[GPIOOW_PIN_DATA]);
sc->sc_data = GPIO_PIN_OUTPUT;
if (caps & GPIO_PIN_OPENDRAIN) {
printf(" open-drain");
sc->sc_data |= GPIO_PIN_OPENDRAIN;
} else if ((caps & GPIO_PIN_PUSHPULL) && (caps & GPIO_PIN_TRISTATE)) {
printf(" push-pull tri-state");
sc->sc_data |= GPIO_PIN_PUSHPULL;
}
if (caps & GPIO_PIN_PULLUP) {
printf(" pull-up");
sc->sc_data |= GPIO_PIN_PULLUP;
}
gpio_pin_ctl(sc->sc_gpio, &sc->sc_map, GPIOOW_PIN_DATA, sc->sc_data);
printf("\n");
/* Attach 1-Wire bus */
sc->sc_ow_bus.bus_cookie = sc;
sc->sc_ow_bus.bus_reset = gpioow_ow_reset;
sc->sc_ow_bus.bus_bit = gpioow_ow_bit;
bzero(&oba, sizeof(oba));
oba.oba_bus = &sc->sc_ow_bus;
sc->sc_ow_dev = config_found(self, &oba, onewirebus_print);
return;
fail:
gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
}
