/**
* Switch power at an external regulator (for our root hub).
*
* @param ctrl pointer to the xHCI controller
* @param port port number as in the control message (one-based)
* @param enable boolean indicating whether to enable or disable power
* @return returns 0 on success, an error-code on failure
*/
static int board_usb_port_power_set(struct udevice *dev, int port,
bool enable)
{
#if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR)
/* We start counting ports at 0, while USB counts from 1. */
int index = port - 1;
const char *regname = NULL;
struct udevice *regulator;
const char *prop = "tsd,usb-port-power";
int ret;
debug("%s: ctrl '%s' port %d enable %s\n", __func__,
dev_read_name(dev), port, enable ? "true" : "false");
ret = dev_read_string_index(dev, prop, index, ®name);
if (ret < 0) {
debug("%s: ctrl '%s' port %d: no entry in '%s'\n",
__func__, dev_read_name(dev), port, prop);
return ret;
}
ret = regulator_get_by_platname(regname, ®ulator);
if (ret) {
debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n",
__func__, dev_read_name(dev), port, regname);
return ret;
}
regulator_set_enable(regulator, enable);
return 0;
#else
return -ENOTSUPP;
#endif
}
static int i2c_deblock_gpio(struct udevice *bus)
{
struct gpio_desc gpios[PIN_COUNT];
int ret, ret0;
ret = gpio_request_list_by_name(bus, "gpios", gpios,
ARRAY_SIZE(gpios), GPIOD_IS_IN);
if (ret != ARRAY_SIZE(gpios)) {
debug("%s: I2C Node '%s' has no 'gpios' property %s\n",
__func__, dev_read_name(bus), bus->name);
if (ret >= 0) {
gpio_free_list(bus, gpios, ret);
ret = -ENOENT;
}
goto out;
}
ret = pinctrl_select_state(bus, "gpio");
if (ret) {
debug("%s: I2C Node '%s' has no 'gpio' pinctrl state. %s\n",
__func__, dev_read_name(bus), bus->name);
goto out_no_pinctrl;
}
ret0 = i2c_deblock_gpio_loop(&gpios[PIN_SDA], &gpios[PIN_SCL]);
ret = pinctrl_select_state(bus, "default");
if (ret) {
debug("%s: I2C Node '%s' has no 'default' pinctrl state. %s\n",
__func__, dev_read_name(bus), bus->name);
}
ret = !ret ? ret0 : ret;
out_no_pinctrl:
gpio_free_list(bus, gpios, ARRAY_SIZE(gpios));
out:
return ret;
}
int i2c_chip_ofdata_to_platdata(struct udevice *dev, struct dm_i2c_chip *chip)
{
int addr;
chip->offset_len = dev_read_u32_default(dev, "u-boot,i2c-offset-len",
1);
chip->flags = 0;
addr = dev_read_u32_default(dev, "reg", -1);
if (addr == -1) {
debug("%s: I2C Node '%s' has no 'reg' property %s\n", __func__,
dev_read_name(dev), dev->name);
return -EINVAL;
}
chip->chip_addr = addr;
return 0;
}
