1 /****************************************************************************/
4 * mcfpit.h -- ColdFire internal PIT timer support defines.
6 * (C) Copyright 2003, Greg Ungerer (gerg@snapgear.com)
9 /****************************************************************************/
12 /****************************************************************************/
14 #include <linux/config.h>
17 * Get address specific defines for the 5270/5271 and 5280/5282.
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 */
26 * Define the PIT timer register set addresses.
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));
35 * Bit definitions for the PIT Control and Status register.
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 */
62 /****************************************************************************/