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6d1a718fdf
Boards where ECs that use a I2C port != 0 specify this in the devicetree file via the google,remote-bus property. Previously this was ignored and hardcoded to port 0. Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: u-boot@lists.denx.de Acked-by: Simon Glass <sjg@chromium.org>
63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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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;
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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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