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61 lines
1.4 KiB
61 lines
1.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (c) 2015 Google, Inc |
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* Written by Simon Glass <[email protected]> |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <cros_ec.h> |
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#include <errno.h> |
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#include <i2c.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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struct cros_ec_i2c_bus { |
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int remote_bus; |
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}; |
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static int cros_ec_i2c_set_bus_speed(struct udevice *dev, unsigned int speed) |
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{ |
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return 0; |
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} |
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static int cros_ec_i2c_xfer(struct udevice *dev, struct i2c_msg *msg, |
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int nmsgs) |
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{ |
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struct cros_ec_i2c_bus *i2c_bus = dev_get_priv(dev); |
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return cros_ec_i2c_tunnel(dev->parent, i2c_bus->remote_bus, msg, nmsgs); |
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} |
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static int cros_ec_i2c_ofdata_to_platdata(struct udevice *dev) |
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{ |
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struct cros_ec_i2c_bus *i2c_bus = dev_get_priv(dev); |
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const void *blob = gd->fdt_blob; |
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int node = dev_of_offset(dev); |
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i2c_bus->remote_bus = fdtdec_get_uint(blob, node, "google,remote-bus", |
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0); |
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return 0; |
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} |
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static const struct dm_i2c_ops cros_ec_i2c_ops = { |
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.xfer = cros_ec_i2c_xfer, |
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.set_bus_speed = cros_ec_i2c_set_bus_speed, |
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}; |
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static const struct udevice_id cros_ec_i2c_ids[] = { |
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{ .compatible = "google,cros-ec-i2c-tunnel" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(cros_ec_tunnel) = { |
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.name = "cros_ec_tunnel", |
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.id = UCLASS_I2C, |
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.of_match = cros_ec_i2c_ids, |
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.ofdata_to_platdata = cros_ec_i2c_ofdata_to_platdata, |
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.priv_auto_alloc_size = sizeof(struct cros_ec_i2c_bus), |
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.ops = &cros_ec_i2c_ops, |
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};
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