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Diffstat (limited to 'arch/m68k/include/asm/uart.h')
| -rw-r--r-- | arch/m68k/include/asm/uart.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/uart.h b/arch/m68k/include/asm/uart.h new file mode 100644 index 000000000..9a528ea49 --- /dev/null +++ b/arch/m68k/include/asm/uart.h @@ -0,0 +1,171 @@ +/* + * uart.h -- ColdFire internal UART support defines. + * + * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/****************************************************************************/ +#ifndef uart_h +#define uart_h +/****************************************************************************/ + +/* UART module registers */ +/* Register read/write struct */ +typedef struct uart { + u8 umr; /* 0x00 Mode Register */ + u8 resv0[0x3]; + union { + u8 usr; /* 0x04 Status Register */ + u8 ucsr; /* 0x04 Clock Select Register */ + }; + u8 resv1[0x3]; + u8 ucr; /* 0x08 Command Register */ + u8 resv2[0x3]; + union { + u8 utb; /* 0x0c Transmit Buffer */ + u8 urb; /* 0x0c Receive Buffer */ + }; + u8 resv3[0x3]; + union { + u8 uipcr; /* 0x10 Input Port Change Register */ + u8 uacr; /* 0x10 Auxiliary Control reg */ + }; + u8 resv4[0x3]; + union { + u8 uimr; /* 0x14 Interrupt Mask reg */ + u8 uisr; /* 0x14 Interrupt Status reg */ + }; + u8 resv5[0x3]; + u8 ubg1; /* 0x18 Counter Timer Upper Register */ + u8 resv6[0x3]; + u8 ubg2; /* 0x1c Counter Timer Lower Register */ + u8 resv7[0x17]; + u8 uip; /* 0x34 Input Port Register */ + u8 resv8[0x3]; + u8 uop1; /* 0x38 Output Port Set Register */ + u8 resv9[0x3]; + u8 uop0; /* 0x3c Output Port Reset Register */ +} uart_t; + +/********************************************************************* +* Universal Asynchronous Receiver Transmitter (UART) +*********************************************************************/ +/* Bit definitions and macros for UMR */ +#define UART_UMR_BC(x) (((x)&0x03)) +#define UART_UMR_PT (0x04) +#define UART_UMR_PM(x) (((x)&0x03)<<3) +#define UART_UMR_ERR (0x20) +#define UART_UMR_RXIRQ (0x40) +#define UART_UMR_RXRTS (0x80) +#define UART_UMR_SB(x) (((x)&0x0F)) +#define UART_UMR_TXCTS (0x10) /* Trsnsmit CTS */ +#define UART_UMR_TXRTS (0x20) /* Transmit RTS */ +#define UART_UMR_CM(x) (((x)&0x03)<<6) /* CM bits */ +#define UART_UMR_PM_MULTI_ADDR (0x1C) +#define UART_UMR_PM_MULTI_DATA (0x18) +#define UART_UMR_PM_NONE (0x10) +#define UART_UMR_PM_FORCE_HI (0x0C) +#define UART_UMR_PM_FORCE_LO (0x08) +#define UART_UMR_PM_ODD (0x04) +#define UART_UMR_PM_EVEN (0x00) +#define UART_UMR_BC_5 (0x00) +#define UART_UMR_BC_6 (0x01) +#define UART_UMR_BC_7 (0x02) +#define UART_UMR_BC_8 (0x03) +#define UART_UMR_CM_NORMAL (0x00) +#define UART_UMR_CM_ECH (0x40) +#define UART_UMR_CM_LOCAL_LOOP (0x80) +#define UART_UMR_CM_REMOTE_LOOP (0xC0) +#define UART_UMR_SB_STOP_BITS_1 (0x07) +#define UART_UMR_SB_STOP_BITS_15 (0x08) +#define UART_UMR_SB_STOP_BITS_2 (0x0F) + +/* Bit definitions and macros for USR */ +#define UART_USR_RXRDY (0x01) +#define UART_USR_FFULL (0x02) +#define UART_USR_TXRDY (0x04) +#define UART_USR_TXEMP (0x08) +#define UART_USR_OE (0x10) +#define UART_USR_PE (0x20) +#define UART_USR_FE (0x40) +#define UART_USR_RB (0x80) + +/* Bit definitions and macros for UCSR */ +#define UART_UCSR_TCS(x) (((x)&0x0F)) +#define UART_UCSR_RCS(x) (((x)&0x0F)<<4) +#define UART_UCSR_RCS_SYS_CLK (0xD0) +#define UART_UCSR_RCS_CTM16 (0xE0) +#define UART_UCSR_RCS_CTM (0xF0) +#define UART_UCSR_TCS_SYS_CLK (0x0D) +#define UART_UCSR_TCS_CTM16 (0x0E) +#define UART_UCSR_TCS_CTM (0x0F) + +/* Bit definitions and macros for UCR */ +#define UART_UCR_RXC(x) (((x)&0x03)) +#define UART_UCR_TXC(x) (((x)&0x03)<<2) +#define UART_UCR_MISC(x) (((x)&0x07)<<4) +#define UART_UCR_NONE (0x00) +#define UART_UCR_STOP_BREAK (0x70) +#define UART_UCR_START_BREAK (0x60) +#define UART_UCR_BKCHGINT (0x50) +#define UART_UCR_RESET_ERROR (0x40) +#define UART_UCR_RESET_TX (0x30) +#define UART_UCR_RESET_RX (0x20) +#define UART_UCR_RESET_MR (0x10) +#define UART_UCR_TX_DISABLED (0x08) +#define UART_UCR_TX_ENABLED (0x04) +#define UART_UCR_RX_DISABLED (0x02) +#define UART_UCR_RX_ENABLED (0x01) + +/* Bit definitions and macros for UIPCR */ +#define UART_UIPCR_CTS (0x01) +#define UART_UIPCR_COS (0x10) + +/* Bit definitions and macros for UACR */ +#define UART_UACR_IEC (0x01) + +/* Bit definitions and macros for UIMR */ +#define UART_UIMR_TXRDY (0x01) +#define UART_UIMR_RXRDY_FU (0x02) +#define UART_UIMR_DB (0x04) +#define UART_UIMR_COS (0x80) + +/* Bit definitions and macros for UISR */ +#define UART_UISR_TXRDY (0x01) +#define UART_UISR_RXRDY_FU (0x02) +#define UART_UISR_DB (0x04) +#define UART_UISR_RXFTO (0x08) +#define UART_UISR_TXFIFO (0x10) +#define UART_UISR_RXFIFO (0x20) +#define UART_UISR_COS (0x80) + +/* Bit definitions and macros for UIP */ +#define UART_UIP_CTS (0x01) + +/* Bit definitions and macros for UOP1 */ +#define UART_UOP1_RTS (0x01) + +/* Bit definitions and macros for UOP0 */ +#define UART_UOP0_RTS (0x01) + +/****************************************************************************/ +#endif /* mcfuart_h */ |