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Diffstat (limited to 'include/asm-mn10300/unit-asb2303/timex.h')
-rw-r--r-- | include/asm-mn10300/unit-asb2303/timex.h | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/include/asm-mn10300/unit-asb2303/timex.h b/include/asm-mn10300/unit-asb2303/timex.h deleted file mode 100644 index 7e54b0cfdd03..000000000000 --- a/include/asm-mn10300/unit-asb2303/timex.h +++ /dev/null | |||
@@ -1,135 +0,0 @@ | |||
1 | /* ASB2303-specific timer specifcations | ||
2 | * | ||
3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | ||
4 | * Written by David Howells (dhowells@redhat.com) | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public Licence | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the Licence, or (at your option) any later version. | ||
10 | */ | ||
11 | #ifndef _ASM_UNIT_TIMEX_H | ||
12 | #define _ASM_UNIT_TIMEX_H | ||
13 | |||
14 | #ifndef __ASSEMBLY__ | ||
15 | #include <linux/irq.h> | ||
16 | #endif /* __ASSEMBLY__ */ | ||
17 | |||
18 | #include <asm/timer-regs.h> | ||
19 | #include <asm/unit/clock.h> | ||
20 | |||
21 | /* | ||
22 | * jiffies counter specifications | ||
23 | */ | ||
24 | |||
25 | #define TMJCBR_MAX 0xffff | ||
26 | #define TMJCBC TM01BC | ||
27 | |||
28 | #define TMJCMD TM01MD | ||
29 | #define TMJCBR TM01BR | ||
30 | #define TMJCIRQ TM1IRQ | ||
31 | #define TMJCICR TM1ICR | ||
32 | #define TMJCICR_LEVEL GxICR_LEVEL_5 | ||
33 | |||
34 | #ifndef __ASSEMBLY__ | ||
35 | |||
36 | static inline void startup_jiffies_counter(void) | ||
37 | { | ||
38 | unsigned rate; | ||
39 | u16 md, t16; | ||
40 | |||
41 | /* use as little prescaling as possible to avoid losing accuracy */ | ||
42 | md = TM0MD_SRC_IOCLK; | ||
43 | rate = MN10300_JCCLK / HZ; | ||
44 | |||
45 | if (rate > TMJCBR_MAX) { | ||
46 | md = TM0MD_SRC_IOCLK_8; | ||
47 | rate = MN10300_JCCLK / 8 / HZ; | ||
48 | |||
49 | if (rate > TMJCBR_MAX) { | ||
50 | md = TM0MD_SRC_IOCLK_32; | ||
51 | rate = MN10300_JCCLK / 32 / HZ; | ||
52 | |||
53 | if (rate > TMJCBR_MAX) | ||
54 | BUG(); | ||
55 | } | ||
56 | } | ||
57 | |||
58 | TMJCBR = rate - 1; | ||
59 | t16 = TMJCBR; | ||
60 | |||
61 | TMJCMD = | ||
62 | md | | ||
63 | TM1MD_SRC_TM0CASCADE << 8 | | ||
64 | TM0MD_INIT_COUNTER | | ||
65 | TM1MD_INIT_COUNTER << 8; | ||
66 | |||
67 | TMJCMD = | ||
68 | md | | ||
69 | TM1MD_SRC_TM0CASCADE << 8 | | ||
70 | TM0MD_COUNT_ENABLE | | ||
71 | TM1MD_COUNT_ENABLE << 8; | ||
72 | |||
73 | t16 = TMJCMD; | ||
74 | |||
75 | TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST; | ||
76 | t16 = TMJCICR; | ||
77 | } | ||
78 | |||
79 | static inline void shutdown_jiffies_counter(void) | ||
80 | { | ||
81 | } | ||
82 | |||
83 | #endif /* !__ASSEMBLY__ */ | ||
84 | |||
85 | |||
86 | /* | ||
87 | * timestamp counter specifications | ||
88 | */ | ||
89 | |||
90 | #define TMTSCBR_MAX 0xffffffff | ||
91 | #define TMTSCBC TM45BC | ||
92 | |||
93 | #ifndef __ASSEMBLY__ | ||
94 | |||
95 | static inline void startup_timestamp_counter(void) | ||
96 | { | ||
97 | /* set up timer 4 & 5 cascaded as a 32-bit counter to count real time | ||
98 | * - count down from 4Gig-1 to 0 and wrap at IOCLK rate | ||
99 | */ | ||
100 | TM45BR = TMTSCBR_MAX; | ||
101 | |||
102 | TM4MD = TM4MD_SRC_IOCLK; | ||
103 | TM4MD |= TM4MD_INIT_COUNTER; | ||
104 | TM4MD &= ~TM4MD_INIT_COUNTER; | ||
105 | TM4ICR = 0; | ||
106 | |||
107 | TM5MD = TM5MD_SRC_TM4CASCADE; | ||
108 | TM5MD |= TM5MD_INIT_COUNTER; | ||
109 | TM5MD &= ~TM5MD_INIT_COUNTER; | ||
110 | TM5ICR = 0; | ||
111 | |||
112 | TM5MD |= TM5MD_COUNT_ENABLE; | ||
113 | TM4MD |= TM4MD_COUNT_ENABLE; | ||
114 | } | ||
115 | |||
116 | static inline void shutdown_timestamp_counter(void) | ||
117 | { | ||
118 | TM4MD = 0; | ||
119 | TM5MD = 0; | ||
120 | } | ||
121 | |||
122 | /* | ||
123 | * we use a cascaded pair of 16-bit down-counting timers to count I/O | ||
124 | * clock cycles for the purposes of time keeping | ||
125 | */ | ||
126 | typedef unsigned long cycles_t; | ||
127 | |||
128 | static inline cycles_t read_timestamp_counter(void) | ||
129 | { | ||
130 | return (cycles_t)TMTSCBC; | ||
131 | } | ||
132 | |||
133 | #endif /* !__ASSEMBLY__ */ | ||
134 | |||
135 | #endif /* _ASM_UNIT_TIMEX_H */ | ||