drivers/i2c/cros_ec_tunnel.c

   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 };