int cros_ec_register(struct udevice *dev)
{
struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
const void *blob = gd->fdt_blob;
int node = dev->of_offset;
char id[MSG_BYTES];
cdev->dev = dev;
gpio_request_by_name(dev, "ec-interrupt", 0, &cdev->ec_int,
GPIOD_IS_IN);
cdev->optimise_flash_write = fdtdec_get_bool(blob, node,
"optimise-flash-write");
if (cros_ec_check_version(cdev)) {
debug("%s: Could not detect CROS-EC version\n", __func__);
return -CROS_EC_ERR_CHECK_VERSION;
}
if (cros_ec_read_id(cdev, id, sizeof(id))) {
debug("%s: Could not read KBC ID\n", __func__);
return -CROS_EC_ERR_READ_ID;
}
/* Remember this device for use by the cros_ec command */
debug("Google Chrome EC v%d CROS-EC driver ready, id '%s'\n",
cdev->protocol_version, id);
return 0;
}
void
cros_ec_attach(struct device *parent, struct device *self, void *aux)
{
struct cros_ec_softc *sc = (struct cros_ec_softc *)self;
struct i2c_attach_args *ia = aux;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
printf("\n");
if (cros_ec_check_version(sc)) {
printf("%s: could not initialize ChromeOS EC\n", __func__);
return;
}
if (cros_ec_init_keyboard(sc)) {
printf("%s: could not initialize keyboard\n", __func__);
return;
}
}
int cros_ec_init(const void *blob, struct cros_ec_dev **cros_ecp)
{
char id[MSG_BYTES];
struct cros_ec_dev *dev;
int node = 0;
*cros_ecp = NULL;
do {
node = fdtdec_next_compatible(blob, node,
COMPAT_GOOGLE_CROS_EC);
if (node < 0) {
debug("%s: Node not found\n", __func__);
return 0;
}
} while (!fdtdec_get_is_enabled(blob, node));
if (cros_ec_decode_fdt(blob, node, &dev)) {
debug("%s: Failed to decode device.\n", __func__);
return -CROS_EC_ERR_FDT_DECODE;
}
switch (dev->interface) {
#ifdef CONFIG_CROS_EC_SPI
case CROS_EC_IF_SPI:
if (cros_ec_spi_init(dev, blob)) {
debug("%s: Could not setup SPI interface\n", __func__);
return -CROS_EC_ERR_DEV_INIT;
}
break;
#endif
#ifdef CONFIG_CROS_EC_I2C
case CROS_EC_IF_I2C:
if (cros_ec_i2c_init(dev, blob))
return -CROS_EC_ERR_DEV_INIT;
break;
#endif
#ifdef CONFIG_CROS_EC_LPC
case CROS_EC_IF_LPC:
if (cros_ec_lpc_init(dev, blob))
return -CROS_EC_ERR_DEV_INIT;
break;
#endif
#ifdef CONFIG_CROS_EC_SANDBOX
case CROS_EC_IF_SANDBOX:
if (cros_ec_sandbox_init(dev, blob))
return -CROS_EC_ERR_DEV_INIT;
break;
#endif
case CROS_EC_IF_NONE:
default:
return 0;
}
/* we will poll the EC interrupt line */
fdtdec_setup_gpio(&dev->ec_int);
if (fdt_gpio_isvalid(&dev->ec_int))
gpio_direction_input(dev->ec_int.gpio);
if (cros_ec_check_version(dev)) {
debug("%s: Could not detect CROS-EC version\n", __func__);
return -CROS_EC_ERR_CHECK_VERSION;
}
if (cros_ec_read_id(dev, id, sizeof(id))) {
debug("%s: Could not read KBC ID\n", __func__);
return -CROS_EC_ERR_READ_ID;
}
/* Remember this device for use by the cros_ec command */
last_dev = *cros_ecp = dev;
debug("Google Chrome EC CROS-EC driver ready, id '%s'\n", id);
return 0;
}
