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/****************************************************************************/

/*

 *  linux/include/asm-arm/arch-l7200/pmpcon.h

 *

 *   Registers and  helper functions for the L7200 Link-Up Systems

 *   DC/DC converter register.

 *

 *   (C) Copyright 2000, S A McConnell  (samcconn@cotw.com)

 *

 *  This file is subject to the terms and conditions of the GNU General Public

 *  License. See the file COPYING in the main directory of this archive for

 *  more details.

 */

/****************************************************************************/

#define PMPCON_OFF 0x00006000  /* Offset from IO_START_2. */

/* IO_START_2 and IO_BASE_2 are defined in hardware.h */

#define PMPCON_START (IO_START_2 + PMPCON_OFF)  /* Physical address of reg. */

#define PMPCON_BASE  (IO_BASE_2  + PMPCON_OFF)  /* Virtual address of reg. */

#define PMPCON (*(volatile unsigned int *)(PMPCON_BASE))

#define PWM2_50CYCLE 0x800

#define CONTRAST     0x9

#define PWM1H (CONTRAST)

#define PWM1L (CONTRAST << 4)

#define PMPCON_VALUE  (PWM2_50CYCLE | PWM1L | PWM1H) 

/* PMPCON = 0x811;   // too light and fuzzy

 * PMPCON = 0x844;

 * PMPCON = 0x866;   // better color poor depth

 * PMPCON = 0x888;   // Darker but better depth

 * PMPCON = 0x899;   // Darker even better depth

 * PMPCON = 0x8aa;   // too dark even better depth

 * PMPCON = 0X8cc;   // Way too dark

 */

/* As CONTRAST value increases the greater the depth perception and

 * the darker the colors.

 */