/* SPDX-License-Identifier: GPL-2.0 *//* * Copyright 2005, 2007 Simtec Electronics *	http://armlinux.simtec.co.uk/ *	Ben Dooks <ben@simtec.co.uk> */ #include <linux/serial_s3c.h> /* The S5PV210/S5PC110 implementations are as belows. */ 	.macro fifo_level_s5pv210 rd, rx		ldr	\rd, [\rx, # S3C2410_UFSTAT]ARM_BE8(rev \rd, \rd)		and	\rd, \rd, #S5PV210_UFSTAT_TXMASK	.endm 	.macro  fifo_full_s5pv210 rd, rx		ldr	\rd, [\rx, # S3C2410_UFSTAT]ARM_BE8(rev \rd, \rd)		tst	\rd, #S5PV210_UFSTAT_TXFULL	.endm /* The S3C2440 implementations are used by default as they are the * most widely re-used */ 	.macro fifo_level_s3c2440 rd, rx		ldr	\rd, [\rx, # S3C2410_UFSTAT]ARM_BE8(rev \rd, \rd)		and	\rd, \rd, #S3C2440_UFSTAT_TXMASK	.endm #ifndef fifo_level#define fifo_level fifo_level_s3c2440#endif 	.macro  fifo_full_s3c2440 rd, rx		ldr	\rd, [\rx, # S3C2410_UFSTAT]ARM_BE8(rev \rd, \rd)		tst	\rd, #S3C2440_UFSTAT_TXFULL	.endm #ifndef fifo_full#define fifo_full fifo_full_s3c2440#endif 	.macro	senduart,rd,rx		strb 	\rd, [\rx, # S3C2410_UTXH]	.endm 	.macro	busyuart, rd, rx		ldr	\rd, [\rx, # S3C2410_UFCON]ARM_BE8(rev \rd, \rd)		tst	\rd, #S3C2410_UFCON_FIFOMODE	@ fifo enabled?		beq	1001f				@		@ FIFO enabled...1003:		fifo_full \rd, \rx		bne	1003b		b	1002f 1001:		@ busy waiting for non fifo		ldr	\rd, [\rx, # S3C2410_UTRSTAT]ARM_BE8(rev \rd, \rd)		tst	\rd, #S3C2410_UTRSTAT_TXFE		beq	1001b 1002:		@ exit busyuart	.endm 	.macro	waituartcts,rd,rx	.endm 	.macro	waituarttxrdy,rd,rx		ldr	\rd, [\rx, # S3C2410_UFCON]ARM_BE8(rev \rd, \rd)		tst	\rd, #S3C2410_UFCON_FIFOMODE	@ fifo enabled?		beq	1001f				@		@ FIFO enabled...1003:		fifo_level \rd, \rx		teq	\rd, #0		bne	1003b		b	1002f1001:		@ idle waiting for non fifo		ldr	\rd, [\rx, # S3C2410_UTRSTAT]ARM_BE8(rev \rd, \rd)		tst	\rd, #S3C2410_UTRSTAT_TXFE		beq	1001b 1002:		@ exit busyuart	.endm