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drivers: i2c: add dummy driver for vnd,i2c

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We will need this to be able to DEVICE_DT_GET() bus devices from
tests/drivers/build_all in an upcoming commit.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
This commit is contained in:
Martí Bolívar 2021-01-15 16:35:53 -08:00 • committed by Anas Nashif
commit 7bbead6786
5 changed files with 60 additions and 0 deletions
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46
drivers/i2c/i2c_test.c Normal file
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/*
* Copyright (c) 2021, Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
/*
* This is not a real I2C driver. It is used to instantiate struct
* devices for the "vnd,i2c" devicetree compatible used in test code.
*/
#include <zephyr.h>
#include <drivers/i2c.h>
#define DT_DRV_COMPAT vnd_i2c
static int vnd_i2c_configure(const struct device *dev,
uint32_t dev_config)
{
return -ENOTSUP;
}
static int vnd_i2c_transfer(const struct device *dev,
struct i2c_msg *msgs,
uint8_t num_msgs, uint16_t addr)
{
return -ENOTSUP;
}
static const struct i2c_driver_api vnd_i2c_api = {
.configure = vnd_i2c_configure,
.transfer = vnd_i2c_transfer,
};
static int vnd_i2c_init(const struct device *dev)
{
return 0;
}
#define VND_I2C_INIT(n) \
DEVICE_DT_INST_DEFINE(n, &vnd_i2c_init, device_pm_control_nop, \
NULL, NULL, POST_KERNEL, \
CONFIG_KERNEL_INIT_PRIORITY_DEVICE, \
&vnd_i2c_api);
DT_INST_FOREACH_STATUS_OKAY(VND_I2C_INIT)