• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1/* arch/arm/plat-samsung/include/plat/debug-macro.S
2 *
3 * Copyright 2005, 2007 Simtec Electronics
4 *	http://armlinux.simtec.co.uk/
5 *	Ben Dooks <ben@simtec.co.uk>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10*/
11
12#include <linux/serial_s3c.h>
13
14/* The S5PV210/S5PC110 implementations are as belows. */
15
16	.macro fifo_level_s5pv210 rd, rx
17		ldr	\rd, [\rx, # S3C2410_UFSTAT]
18		and	\rd, \rd, #S5PV210_UFSTAT_TXMASK
19	.endm
20
21	.macro  fifo_full_s5pv210 rd, rx
22		ldr	\rd, [\rx, # S3C2410_UFSTAT]
23		tst	\rd, #S5PV210_UFSTAT_TXFULL
24	.endm
25
26/* The S3C2440 implementations are used by default as they are the
27 * most widely re-used */
28
29	.macro fifo_level_s3c2440 rd, rx
30		ldr	\rd, [\rx, # S3C2410_UFSTAT]
31		and	\rd, \rd, #S3C2440_UFSTAT_TXMASK
32	.endm
33
34#ifndef fifo_level
35#define fifo_level fifo_level_s3c2440
36#endif
37
38	.macro  fifo_full_s3c2440 rd, rx
39		ldr	\rd, [\rx, # S3C2410_UFSTAT]
40		tst	\rd, #S3C2440_UFSTAT_TXFULL
41	.endm
42
43#ifndef fifo_full
44#define fifo_full fifo_full_s3c2440
45#endif
46
47	.macro	senduart,rd,rx
48		strb 	\rd, [\rx, # S3C2410_UTXH]
49	.endm
50
51	.macro	busyuart, rd, rx
52		ldr	\rd, [\rx, # S3C2410_UFCON]
53		tst	\rd, #S3C2410_UFCON_FIFOMODE	@ fifo enabled?
54		beq	1001f				@
55		@ FIFO enabled...
561003:
57		fifo_full \rd, \rx
58		bne	1003b
59		b	1002f
60
611001:
62		@ busy waiting for non fifo
63		ldr	\rd, [\rx, # S3C2410_UTRSTAT]
64		tst	\rd, #S3C2410_UTRSTAT_TXFE
65		beq	1001b
66
671002:		@ exit busyuart
68	.endm
69
70	.macro	waituart,rd,rx
71		ldr	\rd, [\rx, # S3C2410_UFCON]
72		tst	\rd, #S3C2410_UFCON_FIFOMODE	@ fifo enabled?
73		beq	1001f				@
74		@ FIFO enabled...
751003:
76		fifo_level \rd, \rx
77		teq	\rd, #0
78		bne	1003b
79		b	1002f
801001:
81		@ idle waiting for non fifo
82		ldr	\rd, [\rx, # S3C2410_UTRSTAT]
83		tst	\rd, #S3C2410_UTRSTAT_TXFE
84		beq	1001b
85
861002:		@ exit busyuart
87	.endm
88