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 */ 47