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/* 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 waituart,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 1002f 1001: @ 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