diff options
| author | Erwan Le Ray <erwan.leray@st.com> | 2019-06-18 12:02:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-21 11:17:35 +0200 |
| commit | 4cc0ed626f2ba36cd008d4b380613f0360133891 (patch) | |
| tree | fbc64e514b98a2f0ac42dc85af03643044e7d47e /drivers/tty/serial/stm32-usart.h | |
| parent | 3f2640ed7be838c3f05c0d2b0f7c7508e7431e48 (diff) | |
serial: stm32: add support of timeout interrupt for RX
Add support of RX timeout interrupts to limit the number of interrupts.
RX timeout is a number of bits (baud clock cycles) without
transmission seen in the receiver. One character is used as an arbitrary
RX timeout value.
If parity is enabled, the number of bits has to include parity bit.
Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/stm32-usart.h')
| -rw-r--r-- | drivers/tty/serial/stm32-usart.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/stm32-usart.h b/drivers/tty/serial/stm32-usart.h index 30d2433e27c3..fcd01feeabec 100644 --- a/drivers/tty/serial/stm32-usart.h +++ b/drivers/tty/serial/stm32-usart.h @@ -249,6 +249,7 @@ struct stm32_port { struct dma_chan *tx_ch; /* dma tx channel */ dma_addr_t tx_dma_buf; /* dma tx buffer bus address */ unsigned char *tx_buf; /* dma tx buffer cpu address */ + u32 cr1_irq; /* USART_CR1_RXNEIE or RTOIE */ int last_res; bool tx_dma_busy; /* dma tx busy */ bool hw_flow_control; |