1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * uart.h -- ColdFire internal UART support defines. 4 * 5 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. 6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com) 7 */ 8 9 /****************************************************************************/ 10 #ifndef uart_h 11 #define uart_h 12 /****************************************************************************/ 13 14 /* UART module registers */ 15 /* Register read/write struct */ 16 typedef struct uart { 17 u8 umr; /* 0x00 Mode Register */ 18 u8 resv0[0x3]; 19 union { 20 u8 usr; /* 0x04 Status Register */ 21 u8 ucsr; /* 0x04 Clock Select Register */ 22 }; 23 u8 resv1[0x3]; 24 u8 ucr; /* 0x08 Command Register */ 25 u8 resv2[0x3]; 26 union { 27 u8 utb; /* 0x0c Transmit Buffer */ 28 u8 urb; /* 0x0c Receive Buffer */ 29 }; 30 u8 resv3[0x3]; 31 union { 32 u8 uipcr; /* 0x10 Input Port Change Register */ 33 u8 uacr; /* 0x10 Auxiliary Control reg */ 34 }; 35 u8 resv4[0x3]; 36 union { 37 u8 uimr; /* 0x14 Interrupt Mask reg */ 38 u8 uisr; /* 0x14 Interrupt Status reg */ 39 }; 40 u8 resv5[0x3]; 41 u8 ubg1; /* 0x18 Counter Timer Upper Register */ 42 u8 resv6[0x3]; 43 u8 ubg2; /* 0x1c Counter Timer Lower Register */ 44 u8 resv7[0x17]; 45 u8 uip; /* 0x34 Input Port Register */ 46 u8 resv8[0x3]; 47 u8 uop1; /* 0x38 Output Port Set Register */ 48 u8 resv9[0x3]; 49 u8 uop0; /* 0x3c Output Port Reset Register */ 50 } uart_t; 51 52 /********************************************************************* 53 * Universal Asynchronous Receiver Transmitter (UART) 54 *********************************************************************/ 55 /* Bit definitions and macros for UMR */ 56 #define UART_UMR_BC(x) (((x)&0x03)) 57 #define UART_UMR_PT (0x04) 58 #define UART_UMR_PM(x) (((x)&0x03)<<3) 59 #define UART_UMR_ERR (0x20) 60 #define UART_UMR_RXIRQ (0x40) 61 #define UART_UMR_RXRTS (0x80) 62 #define UART_UMR_SB(x) (((x)&0x0F)) 63 #define UART_UMR_TXCTS (0x10) /* Trsnsmit CTS */ 64 #define UART_UMR_TXRTS (0x20) /* Transmit RTS */ 65 #define UART_UMR_CM(x) (((x)&0x03)<<6) /* CM bits */ 66 #define UART_UMR_PM_MULTI_ADDR (0x1C) 67 #define UART_UMR_PM_MULTI_DATA (0x18) 68 #define UART_UMR_PM_NONE (0x10) 69 #define UART_UMR_PM_FORCE_HI (0x0C) 70 #define UART_UMR_PM_FORCE_LO (0x08) 71 #define UART_UMR_PM_ODD (0x04) 72 #define UART_UMR_PM_EVEN (0x00) 73 #define UART_UMR_BC_5 (0x00) 74 #define UART_UMR_BC_6 (0x01) 75 #define UART_UMR_BC_7 (0x02) 76 #define UART_UMR_BC_8 (0x03) 77 #define UART_UMR_CM_NORMAL (0x00) 78 #define UART_UMR_CM_ECH (0x40) 79 #define UART_UMR_CM_LOCAL_LOOP (0x80) 80 #define UART_UMR_CM_REMOTE_LOOP (0xC0) 81 #define UART_UMR_SB_STOP_BITS_1 (0x07) 82 #define UART_UMR_SB_STOP_BITS_15 (0x08) 83 #define UART_UMR_SB_STOP_BITS_2 (0x0F) 84 85 /* Bit definitions and macros for USR */ 86 #define UART_USR_RXRDY (0x01) 87 #define UART_USR_FFULL (0x02) 88 #define UART_USR_TXRDY (0x04) 89 #define UART_USR_TXEMP (0x08) 90 #define UART_USR_OE (0x10) 91 #define UART_USR_PE (0x20) 92 #define UART_USR_FE (0x40) 93 #define UART_USR_RB (0x80) 94 95 /* Bit definitions and macros for UCSR */ 96 #define UART_UCSR_TCS(x) (((x)&0x0F)) 97 #define UART_UCSR_RCS(x) (((x)&0x0F)<<4) 98 #define UART_UCSR_RCS_SYS_CLK (0xD0) 99 #define UART_UCSR_RCS_CTM16 (0xE0) 100 #define UART_UCSR_RCS_CTM (0xF0) 101 #define UART_UCSR_TCS_SYS_CLK (0x0D) 102 #define UART_UCSR_TCS_CTM16 (0x0E) 103 #define UART_UCSR_TCS_CTM (0x0F) 104 105 /* Bit definitions and macros for UCR */ 106 #define UART_UCR_RXC(x) (((x)&0x03)) 107 #define UART_UCR_TXC(x) (((x)&0x03)<<2) 108 #define UART_UCR_MISC(x) (((x)&0x07)<<4) 109 #define UART_UCR_NONE (0x00) 110 #define UART_UCR_STOP_BREAK (0x70) 111 #define UART_UCR_START_BREAK (0x60) 112 #define UART_UCR_BKCHGINT (0x50) 113 #define UART_UCR_RESET_ERROR (0x40) 114 #define UART_UCR_RESET_TX (0x30) 115 #define UART_UCR_RESET_RX (0x20) 116 #define UART_UCR_RESET_MR (0x10) 117 #define UART_UCR_TX_DISABLED (0x08) 118 #define UART_UCR_TX_ENABLED (0x04) 119 #define UART_UCR_RX_DISABLED (0x02) 120 #define UART_UCR_RX_ENABLED (0x01) 121 122 /* Bit definitions and macros for UIPCR */ 123 #define UART_UIPCR_CTS (0x01) 124 #define UART_UIPCR_COS (0x10) 125 126 /* Bit definitions and macros for UACR */ 127 #define UART_UACR_IEC (0x01) 128 129 /* Bit definitions and macros for UIMR */ 130 #define UART_UIMR_TXRDY (0x01) 131 #define UART_UIMR_RXRDY_FU (0x02) 132 #define UART_UIMR_DB (0x04) 133 #define UART_UIMR_COS (0x80) 134 135 /* Bit definitions and macros for UISR */ 136 #define UART_UISR_TXRDY (0x01) 137 #define UART_UISR_RXRDY_FU (0x02) 138 #define UART_UISR_DB (0x04) 139 #define UART_UISR_RXFTO (0x08) 140 #define UART_UISR_TXFIFO (0x10) 141 #define UART_UISR_RXFIFO (0x20) 142 #define UART_UISR_COS (0x80) 143 144 /* Bit definitions and macros for UIP */ 145 #define UART_UIP_CTS (0x01) 146 147 /* Bit definitions and macros for UOP1 */ 148 #define UART_UOP1_RTS (0x01) 149 150 /* Bit definitions and macros for UOP0 */ 151 #define UART_UOP0_RTS (0x01) 152 153 /****************************************************************************/ 154 #endif /* mcfuart_h */ 155