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gerrit-public.fairphone.software / kernel / msm-4.9 / 3fbd55ec21e698221ffb43526090137b07c32586 / . / arch / arm / include / debug / samsung.S
blob: f3a9cff6d5d44f421bd6107220d6da6f0cd61e25 [file] [log] [blame]
Ben Dooksc116c1d2010-01-29 09:02:12 +0000[diff] [blame]1/* arch/arm/plat-samsung/include/plat/debug-macro.S
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]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
Ben Dooksa2b7ba92008-10-07 22:26:09 +0100[diff] [blame]12#include <plat/regs-serial.h>
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]13
Kukjin Kima73ddc62011-05-11 16:27:51 +0900[diff] [blame]14/* The S5PV210/S5PC110 implementations are as belows. */
Kukjin Kim5f7f6a42010-01-29 10:12:14 +0900[diff] [blame]15
16 .macro fifo_level_s5pv210 rd, rx
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]17 ldr \rd, [\rx, # S3C2410_UFSTAT]
Kukjin Kim5f7f6a42010-01-29 10:12:14 +0900[diff] [blame]18 and \rd, \rd, #S5PV210_UFSTAT_TXMASK
19 .endm
20
21 .macro fifo_full_s5pv210 rd, rx
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]22 ldr \rd, [\rx, # S3C2410_UFSTAT]
Kukjin Kim5f7f6a42010-01-29 10:12:14 +0900[diff] [blame]23 tst \rd, #S5PV210_UFSTAT_TXFULL
24 .endm
25
Ben Dookscbc4dbf2007-07-22 16:10:23 +0100[diff] [blame]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
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]30 ldr \rd, [\rx, # S3C2410_UFSTAT]
Ben Dookscbc4dbf2007-07-22 16:10:23 +0100[diff] [blame]31 and \rd, \rd, #S3C2440_UFSTAT_TXMASK
32 .endm
33
34#ifndef fifo_level
Ben Dooksf0c9eb42008-10-21 14:06:25 +0100[diff] [blame]35#define fifo_level fifo_level_s3c2440
Ben Dookscbc4dbf2007-07-22 16:10:23 +0100[diff] [blame]36#endif
37
38 .macro fifo_full_s3c2440 rd, rx
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]39 ldr \rd, [\rx, # S3C2410_UFSTAT]
Ben Dookscbc4dbf2007-07-22 16:10:23 +0100[diff] [blame]40 tst \rd, #S3C2440_UFSTAT_TXFULL
41 .endm
42
43#ifndef fifo_full
44#define fifo_full fifo_full_s3c2440
45#endif
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]46
47 .macro senduart,rd,rx
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]48 strb \rd, [\rx, # S3C2410_UTXH]
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]49 .endm
50
51 .macro busyuart, rd, rx
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]52 ldr \rd, [\rx, # S3C2410_UFCON]
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]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
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]63 ldr \rd, [\rx, # S3C2410_UTRSTAT]
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]64 tst \rd, #S3C2410_UTRSTAT_TXFE
65 beq 1001b
66
671002: @ exit busyuart
68 .endm
69
70 .macro waituart,rd,rx
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]71 ldr \rd, [\rx, # S3C2410_UFCON]
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]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
Arnd Bergmann28157742013-01-08 21:58:31 +0000[diff] [blame]82 ldr \rd, [\rx, # S3C2410_UTRSTAT]
Ben Dooks498e03b2007-07-22 16:08:48 +0100[diff] [blame]83 tst \rd, #S3C2410_UTRSTAT_TXFE
84 beq 1001b
85
861002: @ exit busyuart
87 .endm