2021-01-16 08:35:53 +08:00
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/*
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* Copyright (c) 2021, Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* This is not a real I2C driver. It is used to instantiate struct
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* devices for the "vnd,i2c" devicetree compatible used in test code.
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*/
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includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h>
As of today <zephyr/zephyr.h> is 100% equivalent to <zephyr/kernel.h>.
This patch proposes to then include <zephyr/kernel.h> instead of
<zephyr/zephyr.h> since it is more clear that you are including the
Kernel APIs and (probably) nothing else. <zephyr/zephyr.h> sounds like a
catch-all header that may be confusing. Most applications need to
include a bunch of other things to compile, e.g. driver headers or
subsystem headers like BT, logging, etc.
The idea of a catch-all header in Zephyr is probably not feasible
anyway. Reason is that Zephyr is not a library, like it could be for
example `libpython`. Zephyr provides many utilities nowadays: a kernel,
drivers, subsystems, etc and things will likely grow. A catch-all header
would be massive, difficult to keep up-to-date. It is also likely that
an application will only build a small subset. Note that subsystem-level
headers may use a catch-all approach to make things easier, though.
NOTE: This patch is **NOT** removing the header, just removing its usage
in-tree. I'd advocate for its deprecation (add a #warning on it), but I
understand many people will have concerns.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-08-25 15:58:46 +08:00
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#include <zephyr/kernel.h>
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2022-05-06 16:25:46 +08:00
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#include <zephyr/drivers/i2c.h>
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2021-01-16 08:35:53 +08:00
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#define DT_DRV_COMPAT vnd_i2c
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static int vnd_i2c_configure(const struct device *dev,
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uint32_t dev_config)
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{
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return -ENOTSUP;
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}
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static int vnd_i2c_transfer(const struct device *dev,
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struct i2c_msg *msgs,
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uint8_t num_msgs, uint16_t addr)
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{
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return -ENOTSUP;
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}
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static const struct i2c_driver_api vnd_i2c_api = {
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.configure = vnd_i2c_configure,
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.transfer = vnd_i2c_transfer,
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};
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static int vnd_i2c_init(const struct device *dev)
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{
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return 0;
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}
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#define VND_I2C_INIT(n) \
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2021-10-28 04:07:10 +08:00
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I2C_DEVICE_DT_INST_DEFINE(n, vnd_i2c_init, NULL, \
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2021-01-16 08:35:53 +08:00
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NULL, NULL, POST_KERNEL, \
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2022-03-12 05:32:34 +08:00
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CONFIG_I2C_INIT_PRIORITY, \
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2021-01-16 08:35:53 +08:00
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&vnd_i2c_api);
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DT_INST_FOREACH_STATUS_OKAY(VND_I2C_INIT)
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