1 /* 2 * Copyright (c) 2015 Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <cros_ec.h> 11 #include <errno.h> 12 #include <i2c.h> 13 14 static int cros_ec_i2c_set_bus_speed(struct udevice *dev, unsigned int speed) 15 { 16 return 0; 17 } 18 19 static int cros_ec_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, 20 int nmsgs) 21 { 22 return cros_ec_i2c_tunnel(dev->parent, msg, nmsgs); 23 } 24 25 static const struct dm_i2c_ops cros_ec_i2c_ops = { 26 .xfer = cros_ec_i2c_xfer, 27 .set_bus_speed = cros_ec_i2c_set_bus_speed, 28 }; 29 30 static const struct udevice_id cros_ec_i2c_ids[] = { 31 { .compatible = "google,cros-ec-i2c-tunnel" }, 32 { } 33 }; 34 35 U_BOOT_DRIVER(cros_ec_tunnel) = { 36 .name = "cros_ec_tunnel", 37 .id = UCLASS_I2C, 38 .of_match = cros_ec_i2c_ids, 39 .per_child_auto_alloc_size = sizeof(struct dm_i2c_chip), 40 .ops = &cros_ec_i2c_ops, 41 }; 42