diff options
Diffstat (limited to 'chip/stm32/usart.h')
| -rw-r--r-- | chip/stm32/usart.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/chip/stm32/usart.h b/chip/stm32/usart.h index a274aa8dce..8db3558b50 100644 --- a/chip/stm32/usart.h +++ b/chip/stm32/usart.h @@ -183,4 +183,28 @@ void usart_set_baud_f(struct usart_config const *config, int frequency_hz); */ void usart_clear_tc(struct usart_config const *config); +/* + * Each family implementation provides the usart_get_configs function to access + * a read only list of the configs that are currently enabled. + */ +struct usart_configs { + /* + * The family's usart_config array, entries in the array for disabled + * configs will be NULL, enabled configs will point to the usart_config + * that was enabled. And the following will be true: + * + * configs[i]->hw->index == i; + */ + struct usart_config const * const *configs; + + /* + * The total possible number of configs that this family supports. + * This will be the same as the number of usart_hw structs that the + * family provides in its family specific usart header. + */ + size_t count; +}; + +struct usart_configs usart_get_configs(void); + #endif /* __CROS_EC_USART_H */ |