1 files changed, 0 insertions, 52 deletions
diff --git a/chip/stm32/usart_rx_interrupt-stm32f4.c b/chip/stm32/usart_rx_interrupt-stm32f4.c
deleted file mode 100644
index 198c6dd180..0000000000
--- a/chip/stm32/usart_rx_interrupt-stm32f4.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* Copyright 2020 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* Interrupt based USART RX driver for STM32F0 and STM32F4 */
-
-#include "usart.h"
-
-#include "atomic.h"
-#include "common.h"
-#include "queue.h"
-#include "registers.h"
-
-static void usart_rx_init(struct usart_config const *config)
-{
-	intptr_t base = config->hw->base;
-
-	STM32_USART_CR1(base) |= STM32_USART_CR1_RXNEIE;
-	STM32_USART_CR1(base) |= STM32_USART_CR1_RE;
-#if defined(CHIP_FAMILY_STM32F0) || defined(CHIP_FAMILY_STM32F3) || \
-	defined(CHIP_FAMILY_STM32L4)
-	STM32_USART_CR3(base) |= STM32_USART_CR3_OVRDIS;
-#endif
-}
-
-static void usart_rx_interrupt_handler(struct usart_config const *config)
-{
-	intptr_t base   = config->hw->base;
-	int32_t  status = STM32_USART_SR(base);
-
-	if (status & STM32_USART_SR_RXNE) {
-		uint8_t byte = STM32_USART_RDR(base);
-
-		if (!queue_add_unit(config->producer.queue, &byte))
-			atomic_add((uint32_t *)&(config->state->rx_dropped), 1);
-	}
-}
-
-struct usart_rx const usart_rx_interrupt = {
-	.producer_ops = {
-		/*
-		 * Nothing to do here, we either had enough space in the queue
-		 * when a character came in or we dropped it already.
-		 */
-		.read = NULL,
-	},
-
-	.init      = usart_rx_init,
-	.interrupt = usart_rx_interrupt_handler,
-	.info      = NULL,
-};