1 /* 2 * (C) Copyright 2016 3 * Vikas Manocha, <vikas.manocha@st.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef _SERIAL_STM32_X7_ 9 #define _SERIAL_STM32_X7_ 10 11 struct stm32_usart { 12 u32 cr1; 13 u32 cr2; 14 u32 cr3; 15 u32 brr; 16 u32 gtpr; 17 u32 rtor; 18 u32 rqr; 19 u32 sr; 20 u32 icr; 21 u32 rd_dr; 22 u32 tx_dr; 23 }; 24 25 26 #define USART_CR1_OVER8 (1 << 15) 27 #define USART_CR1_TE (1 << 3) 28 #define USART_CR1_RE (1 << 2) 29 #define USART_CR1_UE (1 << 0) 30 31 #define USART_CR3_OVRDIS (1 << 12) 32 33 #define USART_SR_FLAG_RXNE (1 << 5) 34 #define USART_SR_FLAG_TXE (1 << 7) 35 36 #define USART_BRR_F_MASK 0xFF 37 #define USART_BRR_M_SHIFT 4 38 #define USART_BRR_M_MASK 0xFFF0 39 40 #endif 41