ad1450510a
Refactors all of the serial drivers to use a shared driver class initialization priority configuration, CONFIG_SERIAL_INIT_PRIORITY, to allow configuring serial drivers separately from other devices. This is similar to other driver classes like I2C and SPI. The default is set to CONFIG_KERNEL_INIT_PRIORITY_DEVICE to preserve the existing default initialization priority for most drivers. The one exception is uart_lpc11u6x.c which previously used CONFIG_KERNEL_INIT_PRIORITY_OBJECTS. This change was motivated by an issue on the frdm_k64f board where the serial driver was incorrectly initialized before the clock control driver. Signed-off-by: Maureen Helm <maureen.helm@intel.com>
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/*
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* Copyright (c) 2021, Thomas Stranger
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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 serial driver. It is used to instantiate struct
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* devices for the "vnd,serial" devicetree compatible used in test code.
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*/
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#include <zephyr.h>
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#include <drivers/uart.h>
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#define DT_DRV_COMPAT vnd_serial
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static int serial_vnd_poll_in(const struct device *dev, unsigned char *c)
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{
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return -ENOTSUP;
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}
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static void serial_vnd_poll_out(const struct device *dev, unsigned char c)
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{
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}
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static int serial_vnd_err_check(const struct device *dev)
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{
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return -ENOTSUP;
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}
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#ifdef CONFIG_UART_USE_RUNTIME_CONFIGURE
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static int serial_vnd_configure(const struct device *dev,
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const struct uart_config *cfg)
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{
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return -ENOTSUP;
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}
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static int serial_vnd_config_get(const struct device *dev,
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struct uart_config *cfg)
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{
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return -ENOTSUP;
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}
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#endif /* CONFIG_UART_USE_RUNTIME_CONFIGURE */
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static const struct uart_driver_api serial_vnd_api = {
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.poll_in = serial_vnd_poll_in,
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.poll_out = serial_vnd_poll_out,
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.err_check = serial_vnd_err_check,
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#ifdef CONFIG_UART_USE_RUNTIME_CONFIGURE
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.configure = serial_vnd_configure,
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.config_get = serial_vnd_config_get,
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#endif /* CONFIG_UART_USE_RUNTIME_CONFIGURE */
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};
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static int serial_vnd_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_SERIAL_INIT(n) \
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DEVICE_DT_INST_DEFINE(n, &serial_vnd_init, NULL, \
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NULL, NULL, POST_KERNEL, \
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CONFIG_SERIAL_INIT_PRIORITY, \
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&serial_vnd_api);
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DT_INST_FOREACH_STATUS_OKAY(VND_SERIAL_INIT)
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