diff options
Diffstat (limited to 'target/linux/adm5120/files-3.18/arch/mips/include/asm/mach-adm5120/adm5120_uart.h')
| -rw-r--r-- | target/linux/adm5120/files-3.18/arch/mips/include/asm/mach-adm5120/adm5120_uart.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/target/linux/adm5120/files-3.18/arch/mips/include/asm/mach-adm5120/adm5120_uart.h b/target/linux/adm5120/files-3.18/arch/mips/include/asm/mach-adm5120/adm5120_uart.h new file mode 100644 index 0000000..81d3067 --- /dev/null +++ b/target/linux/adm5120/files-3.18/arch/mips/include/asm/mach-adm5120/adm5120_uart.h @@ -0,0 +1,64 @@ +/* + * ADM5120 UART definitions + * + * This header file defines the hardware registers of the ADM5120 SoC + * built-in UARTs. + * + * Copyright (C) 2007 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#ifndef _MACH_ADM5120_UART_H +#define _MACH_ADM5120_UART_H + +#define UART_BAUDDIV(clk, baud) ((clk/(16 * (baud)))-1) + +#define UART_REG_DATA 0x00 +#define UART_REG_RSR 0x04 +#define UART_REG_ECR UART_REG_RSR +#define UART_REG_LCRH 0x08 +#define UART_REG_LCRM 0x0C +#define UART_REG_LCRL 0x10 +#define UART_REG_CTRL 0x14 +#define UART_REG_FLAG 0x18 + +/* Receive Status Register bits */ +#define UART_RSR_FE (1 << 0) +#define UART_RSR_PE (1 << 1) +#define UART_RSR_BE (1 << 2) +#define UART_RSR_OE (1 << 3) +#define UART_RSR_ERR (UART_RSR_FE | UART_RSR_PE | UART_RSR_BE) + +#define UART_ECR_ALL 0xFF + +/* Line Control High register bits */ +#define UART_LCRH_BRK (1 << 0) /* send break */ +#define UART_LCRH_PEN (1 << 1) /* parity enable */ +#define UART_LCRH_EPS (1 << 2) /* even parity select */ +#define UART_LCRH_STP1 (0 << 3) /* one stop bits select */ +#define UART_LCRH_STP2 (1 << 3) /* two stop bits select */ +#define UART_LCRH_FEN (1 << 4) /* FIFO enable */ + +#define UART_LCRH_WLEN5 (0 << 5) +#define UART_LCRH_WLEN6 (1 << 5) +#define UART_LCRH_WLEN7 (2 << 5) +#define UART_LCRH_WLEN8 (3 << 5) + +/* Control register bits */ +#define UART_CTRL_EN (1 << 0) + +/* Flag register bits */ +#define UART_FLAG_CTS (1 << 0) +#define UART_FLAG_DSR (1 << 1) +#define UART_FLAG_DCD (1 << 2) +#define UART_FLAG_BUSY (1 << 3) +#define UART_FLAG_RXFE (1 << 4) +#define UART_FLAG_TXFF (1 << 5) +#define UART_FLAG_RXFF (1 << 6) +#define UART_FLAG_TXFE (1 << 7) + +#endif /* _MACH_ADM5120_UART_H */ |