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Allow for a default GPIO pin "high", which is required for some boards

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which tie the USB device enable to a GPIO line.

Submitted by:	Stefan Bethke <stb@lassitu.de>
This commit is contained in:
Adrian Chadd 2012-04-20 22:44:00 +00:00
parent 866e643549
commit 15a353ce97
1 changed files with 9 additions and 1 deletions
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10
sys/mips/atheros/ar71xx_gpio.c
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@ -329,7 +329,7 @@ ar71xx_gpio_attach(device_t dev)
struct ar71xx_gpio_softc *sc = device_get_softc(dev);
int error = 0;
int i, j, maxpin;
int mask;
int mask, pinon;
int old = 0;
KASSERT((device_get_unit(dev) == 0),
@ -394,6 +394,9 @@ ar71xx_gpio_attach(device_t dev)
if (resource_int_value(device_get_name(dev), device_get_unit(dev),
"pinmask", &mask) != 0)
mask = 0;
if (resource_int_value(device_get_name(dev), device_get_unit(dev),
"pinon", &pinon) != 0)
pinon = 0;
device_printf(dev, "gpio pinmask=0x%x\n", mask);
for (i = 0, j = 0; j < maxpin; j++) {
if ((mask & (1 << j)) == 0)
@ -407,6 +410,11 @@ ar71xx_gpio_attach(device_t dev)
i++;
}
sc->gpio_npins = i;
for (i = 0; i < sc->gpio_npins; i++) {
j = sc->gpio_pins[i].gp_pin;
if ((pinon & (1 << j)) != 0)
ar71xx_gpio_pin_set(dev, j, 1);
}
device_add_child(dev, "gpioc", device_get_unit(dev));
device_add_child(dev, "gpiobus", device_get_unit(dev));
return (bus_generic_attach(dev));