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1da177e4 LT |
1 | /****************************************************************************/ |
2 | ||
3 | /* | |
4 | * mcfpit.h -- ColdFire internal PIT timer support defines. | |
5 | * | |
6 | * (C) Copyright 2003, Greg Ungerer (gerg@snapgear.com) | |
7 | */ | |
8 | ||
9 | /****************************************************************************/ | |
10 | #ifndef mcfpit_h | |
11 | #define mcfpit_h | |
12 | /****************************************************************************/ | |
13 | ||
14 | #include <linux/config.h> | |
15 | ||
16 | /* | |
17 | * Get address specific defines for the 5270/5271 and 5280/5282. | |
18 | */ | |
19 | #define MCFPIT_BASE1 0x00150000 /* Base address of TIMER1 */ | |
20 | #define MCFPIT_BASE2 0x00160000 /* Base address of TIMER2 */ | |
21 | #define MCFPIT_BASE3 0x00170000 /* Base address of TIMER3 */ | |
22 | #define MCFPIT_BASE4 0x00180000 /* Base address of TIMER4 */ | |
23 | ||
24 | ||
25 | /* | |
26 | * Define the PIT timer register set addresses. | |
27 | */ | |
28 | struct mcfpit { | |
29 | unsigned short pcsr; /* PIT control and status */ | |
30 | unsigned short pmr; /* PIT modulus register */ | |
31 | unsigned short pcntr; /* PIT count register */ | |
32 | } __attribute__((packed)); | |
33 | ||
34 | /* | |
35 | * Bit definitions for the PIT Control and Status register. | |
36 | */ | |
37 | #define MCFPIT_PCSR_CLK1 0x0000 /* System clock divisor */ | |
38 | #define MCFPIT_PCSR_CLK2 0x0100 /* System clock divisor */ | |
39 | #define MCFPIT_PCSR_CLK4 0x0200 /* System clock divisor */ | |
40 | #define MCFPIT_PCSR_CLK8 0x0300 /* System clock divisor */ | |
41 | #define MCFPIT_PCSR_CLK16 0x0400 /* System clock divisor */ | |
42 | #define MCFPIT_PCSR_CLK32 0x0500 /* System clock divisor */ | |
43 | #define MCFPIT_PCSR_CLK64 0x0600 /* System clock divisor */ | |
44 | #define MCFPIT_PCSR_CLK128 0x0700 /* System clock divisor */ | |
45 | #define MCFPIT_PCSR_CLK256 0x0800 /* System clock divisor */ | |
46 | #define MCFPIT_PCSR_CLK512 0x0900 /* System clock divisor */ | |
47 | #define MCFPIT_PCSR_CLK1024 0x0a00 /* System clock divisor */ | |
48 | #define MCFPIT_PCSR_CLK2048 0x0b00 /* System clock divisor */ | |
49 | #define MCFPIT_PCSR_CLK4096 0x0c00 /* System clock divisor */ | |
50 | #define MCFPIT_PCSR_CLK8192 0x0d00 /* System clock divisor */ | |
51 | #define MCFPIT_PCSR_CLK16384 0x0e00 /* System clock divisor */ | |
52 | #define MCFPIT_PCSR_CLK32768 0x0f00 /* System clock divisor */ | |
53 | #define MCFPIT_PCSR_DOZE 0x0040 /* Clock run in doze mode */ | |
54 | #define MCFPIT_PCSR_HALTED 0x0020 /* Clock run in halt mode */ | |
55 | #define MCFPIT_PCSR_OVW 0x0010 /* Overwrite PIT counter now */ | |
56 | #define MCFPIT_PCSR_PIE 0x0008 /* Enable PIT interrupt */ | |
57 | #define MCFPIT_PCSR_PIF 0x0004 /* PIT interrupt flag */ | |
58 | #define MCFPIT_PCSR_RLD 0x0002 /* Reload counter */ | |
59 | #define MCFPIT_PCSR_EN 0x0001 /* Enable PIT */ | |
60 | #define MCFPIT_PCSR_DISABLE 0x0000 /* Disable PIT */ | |
61 | ||
62 | /****************************************************************************/ | |
63 | #endif /* mcfpit_h */ |