| /* |
| * [origin: Linux kernel include/asm-arm/arch-at91/at91_pit.h] |
| * |
| * Copyright (C) 2007 Andrew Victor |
| * Copyright (C) 2007 Atmel Corporation. |
| * |
| * Periodic Interval Timer (PIT) - System peripherals regsters. |
| * Based on AT91SAM9261 datasheet revision D. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #ifndef AT91_PIT_H |
| #define AT91_PIT_H |
| |
| typedef struct at91_pit { |
| u32 mr; /* 0x00 Mode Register */ |
| u32 sr; /* 0x04 Status Register */ |
| u32 pivr; /* 0x08 Periodic Interval Value Register */ |
| u32 piir; /* 0x0C Periodic Interval Image Register */ |
| } at91_pit_t; |
| |
| #define AT91_PIT_MR_IEN 0x02000000 |
| #define AT91_PIT_MR_EN 0x01000000 |
| #define AT91_PIT_MR_PIV_MASK(x) (x & 0x000fffff) |
| #define AT91_PIT_MR_PIV(x) (x & AT91_PIT_MR_PIV_MASK) |
| |
| #ifdef CONFIG_AT91_LEGACY |
| |
| #define AT91_PIT_MR (AT91_PIT + 0x00) /* Mode Register */ |
| #define AT91_PIT_PITIEN (1 << 25) /* Timer Interrupt Enable */ |
| #define AT91_PIT_PITEN (1 << 24) /* Timer Enabled */ |
| #define AT91_PIT_PIV (0xfffff) /* Periodic Interval Value */ |
| |
| #define AT91_PIT_SR (AT91_PIT + 0x04) /* Status Register */ |
| #define AT91_PIT_PITS (1 << 0) /* Timer Status */ |
| |
| #define AT91_PIT_PIVR (AT91_PIT + 0x08) /* Periodic Interval Value Register */ |
| #define AT91_PIT_PIIR (AT91_PIT + 0x0c) /* Periodic Interval Image Register */ |
| #define AT91_PIT_PICNT (0xfff << 20) /* Interval Counter */ |
| #define AT91_PIT_CPIV (0xfffff) /* Inverval Value */ |
| |
| #endif /* CONFIG_AT91_LEGACY */ |
| #endif |
