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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 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 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
|
|
