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usb: device: add dummy configure API

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We cannot implement configure API because there is
no notification of configuration changes provided
for the Abstract Control Model and the UART controller
is only emulated.
However, it allows us to use CDC ACM UART together with
subsystems like Modbus which require configure API for
real controllers.

Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
This commit is contained in:
Johann Fischer 2022-07-06 23:51:46 +02:00 committed by Carles Cufí
parent 3468a02f72
commit 6130417212
1 changed files with 19 additions and 0 deletions
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19
subsys/usb/device/class/cdc_acm.c
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@ -894,6 +894,24 @@ static int cdc_acm_line_ctrl_get(const struct device *dev,
#ifdef CONFIG_UART_USE_RUNTIME_CONFIGURE
static int cdc_acm_configure(const struct device *dev,
const struct uart_config *cfg)
{
ARG_UNUSED(dev);
ARG_UNUSED(cfg);
/*
* We cannot implement configure API because there is
* no notification of configuration changes provided
* for the Abstract Control Model and the UART controller
* is only emulated.
* However, it allows us to use CDC ACM UART together with
* subsystems like Modbus which require configure API for
* real controllers.
*/
return 0;
}
static int cdc_acm_config_get(const struct device *dev,
struct uart_config *cfg)
{
@ -1021,6 +1039,7 @@ static const struct uart_driver_api cdc_acm_driver_api = {
.line_ctrl_get = cdc_acm_line_ctrl_get,
#endif /* CONFIG_UART_LINE_CTRL */
#ifdef CONFIG_UART_USE_RUNTIME_CONFIGURE
.configure = cdc_acm_configure,
.config_get = cdc_acm_config_get,
#endif /* CONFIG_UART_USE_RUNTIME_CONFIGURE */
};