| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /****************************************************************************/ |
| 2 | /* |
| 3 | * linux/include/asm-arm/arch-l7200/pmpcon.h |
| 4 | * |
| 5 | * Registers and helper functions for the L7200 Link-Up Systems |
| 6 | * DC/DC converter register. |
| 7 | * |
| 8 | * (C) Copyright 2000, S A McConnell (samcconn@cotw.com) |
| 9 | * |
| 10 | * This file is subject to the terms and conditions of the GNU General Public |
| 11 | * License. See the file COPYING in the main directory of this archive for |
| 12 | * more details. |
| 13 | */ |
| 14 | |
| 15 | /****************************************************************************/ |
| 16 | |
| 17 | #define PMPCON_OFF 0x00006000 /* Offset from IO_START_2. */ |
| 18 | |
| 19 | /* IO_START_2 and IO_BASE_2 are defined in hardware.h */ |
| 20 | |
| 21 | #define PMPCON_START (IO_START_2 + PMPCON_OFF) /* Physical address of reg. */ |
| 22 | #define PMPCON_BASE (IO_BASE_2 + PMPCON_OFF) /* Virtual address of reg. */ |
| 23 | |
| 24 | |
| 25 | #define PMPCON (*(volatile unsigned int *)(PMPCON_BASE)) |
| 26 | |
| 27 | #define PWM2_50CYCLE 0x800 |
| 28 | #define CONTRAST 0x9 |
| 29 | |
| 30 | #define PWM1H (CONTRAST) |
| 31 | #define PWM1L (CONTRAST << 4) |
| 32 | |
| 33 | #define PMPCON_VALUE (PWM2_50CYCLE | PWM1L | PWM1H) |
| 34 | |
| 35 | /* PMPCON = 0x811; // too light and fuzzy |
| 36 | * PMPCON = 0x844; |
| 37 | * PMPCON = 0x866; // better color poor depth |
| 38 | * PMPCON = 0x888; // Darker but better depth |
| 39 | * PMPCON = 0x899; // Darker even better depth |
| 40 | * PMPCON = 0x8aa; // too dark even better depth |
| 41 | * PMPCON = 0X8cc; // Way too dark |
| 42 | */ |
| 43 | |
| 44 | /* As CONTRAST value increases the greater the depth perception and |
| 45 | * the darker the colors. |
| 46 | */ |