0001 …ˆÑÐ ƒ|M³Ï¾Ò$%…/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * linux/include/asm-arm/hardware/serial_amba.h * * Internal header file for AMBA serial ports * * Copyright (C) ARM Limited * Copyright (C) 2000 Deep Blue Solutions Ltd. */ #ifndef ASM_ARM_HARDWARE_SERIAL_AMBA_H #define ASM_ARM_HARDWARE_SERIAL_AMBA_H #include /* ------------------------------------------------------------------------------- * From AMBA UART (PL010) Block Specification * ------------------------------------------------------------------------------- * UART Register Offsets. */ #define UART01x_DR 0x00 /* Data read or written from the interface. */ #define UART01x_RSR 0x04 /* Receive status register (Read). */ #define UART01x_ECR 0x04 /* Error clear register (Write). */ #define UART010_LCRH 0x08 /* Line control register, high byte. */ #define ST_UART011_DMAWM 0x08 /* DMA watermark configure register. */ #define UART010_LCRM 0x0C /* Line control register, middle byte. */ #define ST_UART011_TIMEOUT 0x0C /* Timeout period register. */ #define UART010_LCRL 0x10 /* Line control register, low byte. */ #define UART010_CR 0x14 /* Control register. */ #define UART01x_FR 0x18 /* Flag register (Read only). */ #define UART010_IIR 0x1C /* Interrupt identification register (Read). */ #define UART010_ICR 0x1C /* Interrupt clear register (Write). */ #define ST_UART011_LCRH_RX 0x1C /* Rx line control register. */ #define UART01x_ILPR 0x20 /* IrDA low power counter register. */ #define UART011_IBRD 0x24 /* Integer baud rate divisor register. */ #define UART011_FBRD 0x28 /* Fractional baud rate divisor register. */ #define UART011_LCRH 0x2c /* Line control register. */ #define ST_UART011_LCRH_TX 0x2c /* Tx Line control register. */ #define UART011_CR 0x30 /* Control register. */ #define UART011_IFLS 0x34 /* Interrupt fifo level select. */ #define UART011_IMSC 0x38 /* Interrupt mask. */ #define UART011_RIS 0x3c /* Raw interrupt status. */ #define UART011_MIS 0x40 /* Masked interrupt status. */ #define UART011_ICR 0x44 /* Interrupt clear register. */ #define UART011_DMACR 0x48 /* DMA control register. */ #define ST_UART011_XFCR 0x50 /* XON/XOFF control register. */ #define ST_UART011_XON1 0x54 /* XON1 register. */ #define ST_UART011_XON2 0x58 /* XON2 register. */ #define ST_UART011_XOFF1 0x5C /* XON1 register. */ #define ST_UART011_XOFF2 0x60 /* XON2 register. */ #define ST_UART011_ITCR 0x80 /* Integration test control register. */ #define ST_UART011_ITIP 0x84 /* Integration test input register. */ #define ST_UART011_ABCR 0x100 /* Autobaud control register. */ #define ST_UART011_ABIMSC 0x15C /* Autobaud interrupt mask/clear register. */ /* * ZTE UART register offsets. This UART has a radically different address * allocation from the ARM and ST variants, so we list all registers here. * We assume unlisted registers do not exist. */ #define ZX_UART011_DR 0x04 #define ZX_UART011_FR 0x14 #define ZX_UART011_IBRD 0x24 #define ZX_UART011_FBRD 0x28 #define ZX_UART011_LCRH 0x30 #define ZX_UART011_CR 0x34 #define ZX_UART011_IFLS 0x38 #define ZX_UART011_IMSC 0x40 #define ZX_UART011_RIS 0x44 #define ZX_UART011_MIS 0x48 #define ZX_UART011_ICR 0x4c #define ZX_UART011_DMACR 0x50 #define UART011_DR_OE (1 << 11) #define UART011_DR_BE (1 << 10) #define UART011_DR_PE (1 << 9) #define UART011_DR_FE (1 << 8) #define UART01x_RSR_OE 0x08 #define UART01x_RSR_BE 0x04 #define UART01x_RSR_PE 0x02 #define UART01x_RSR_FE 0x01 #define UART011_FR_RI 0x100 #define UART011_FR_TXFE 0x080 #define UART011_FR_RXFF 0x040 #define UART01x_FR_TXFF 0x020 #define UART01x_FR_RXFE 0x010 #define UART01x_FR_BUSY 0x008 #define UART01x_FR_DCD 0x004 #define UART01x_FR_DSR 0x002 #define UART01x_FR_CTS 0x001 #define UART01x_FR_TMSK (UART01x_FR_TXFF + UART01x_FR_BUSY) /* * Some bits of Flag Register on ZTE device have different position from * standard ones. */ #define ZX_UART01x_FR_BUSY 0x100 #define ZX_UART01x_FR_DSR 0x008 #define ZX_UART01x_FR_CTS 0x002 #define ZX_UART011