e160f7d430
At present devices use a simple integer offset to record the device tree node associated with the device. In preparation for supporting a live device tree, which uses a node pointer instead, refactor existing code to access this field through an inline function. Signed-off-by: Simon Glass <sjg@chromium.org>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <cros_ec.h>
|
|
#include <errno.h>
|
|
#include <i2c.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
struct cros_ec_i2c_bus {
|
|
int remote_bus;
|
|
};
|
|
|
|
static int cros_ec_i2c_set_bus_speed(struct udevice *dev, unsigned int speed)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int cros_ec_i2c_xfer(struct udevice *dev, struct i2c_msg *msg,
|
|
int nmsgs)
|
|
{
|
|
struct cros_ec_i2c_bus *i2c_bus = dev_get_priv(dev);
|
|
|
|
return cros_ec_i2c_tunnel(dev->parent, i2c_bus->remote_bus, msg, nmsgs);
|
|
}
|
|
|
|
static int cros_ec_i2c_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct cros_ec_i2c_bus *i2c_bus = dev_get_priv(dev);
|
|
const void *blob = gd->fdt_blob;
|
|
int node = dev_of_offset(dev);
|
|
|
|
i2c_bus->remote_bus = fdtdec_get_uint(blob, node, "google,remote-bus",
|
|
0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dm_i2c_ops cros_ec_i2c_ops = {
|
|
.xfer = cros_ec_i2c_xfer,
|
|
.set_bus_speed = cros_ec_i2c_set_bus_speed,
|
|
};
|
|
|
|
static const struct udevice_id cros_ec_i2c_ids[] = {
|
|
{ .compatible = "google,cros-ec-i2c-tunnel" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(cros_ec_tunnel) = {
|
|
.name = "cros_ec_tunnel",
|
|
.id = UCLASS_I2C,
|
|
.of_match = cros_ec_i2c_ids,
|
|
.ofdata_to_platdata = cros_ec_i2c_ofdata_to_platdata,
|
|
.priv_auto_alloc_size = sizeof(struct cros_ec_i2c_bus),
|
|
.ops = &cros_ec_i2c_ops,
|
|
};
|