spi-topcliff-pch: add recovery processing in case wait-event timeout
[zen-stable.git] / arch / arm / plat-samsung / include / plat / debug-macro.S
blob207e275362a82f94844d58afccd725caada2a77f
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.
12 #include <plat/regs-serial.h>
14 /* The S5PV210/S5PC110 implementations are as belows. */
16         .macro fifo_level_s5pv210 rd, rx
17                 ldr     \rd, [ \rx, # S3C2410_UFSTAT ]
18                 and     \rd, \rd, #S5PV210_UFSTAT_TXMASK
19         .endm
21         .macro  fifo_full_s5pv210 rd, rx
22                 ldr     \rd, [ \rx, # S3C2410_UFSTAT ]
23                 tst     \rd, #S5PV210_UFSTAT_TXFULL
24         .endm
26 /* The S3C2440 implementations are used by default as they are the
27  * most widely re-used */
29         .macro fifo_level_s3c2440 rd, rx
30                 ldr     \rd, [ \rx, # S3C2410_UFSTAT ]
31                 and     \rd, \rd, #S3C2440_UFSTAT_TXMASK
32         .endm
34 #ifndef fifo_level
35 #define fifo_level fifo_level_s3c2440
36 #endif
38         .macro  fifo_full_s3c2440 rd, rx
39                 ldr     \rd, [ \rx, # S3C2410_UFSTAT ]
40                 tst     \rd, #S3C2440_UFSTAT_TXFULL
41         .endm
43 #ifndef fifo_full
44 #define fifo_full fifo_full_s3c2440
45 #endif
47         .macro  senduart,rd,rx
48                 strb    \rd, [\rx, # S3C2410_UTXH ]
49         .endm
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...
56 1003:
57                 fifo_full \rd, \rx
58                 bne     1003b
59                 b       1002f
61 1001:
62                 @ busy waiting for non fifo
63                 ldr     \rd, [ \rx, # S3C2410_UTRSTAT ]
64                 tst     \rd, #S3C2410_UTRSTAT_TXFE
65                 beq     1001b
67 1002:           @ exit busyuart
68         .endm
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...
75 1003:
76                 fifo_level \rd, \rx
77                 teq     \rd, #0
78                 bne     1003b
79                 b       1002f
80 1001:
81                 @ idle waiting for non fifo
82                 ldr     \rd, [ \rx, # S3C2410_UTRSTAT ]
83                 tst     \rd, #S3C2410_UTRSTAT_TXFE
84                 beq     1001b
86 1002:           @ exit busyuart
87         .endm