firmware/target/arm/as3525/sansa-fuzev2/lcd-fuzev2.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Dave Chapman
  11  * Copyright (C) 2010 by Thomas Martitz
  12  *
  13  * LCD driver for the Sansa Fuze - controller unknown
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24 #include "config.h"
  25
  26 #include "cpu.h"
  27 #include "lcd.h"
  28 #include "system.h"
  29 #include "clock-target.h"
  30 #include "dbop-as3525.h"
  31 #include "lcd-fuze.h"
  32
  33 void lcd_write_cmd(int16_t cmd)
  34 {
  35     unsigned short data = swap16(cmd);
  36     DBOP_TIMPOL_23 = 0xA12F0036;
  37     dbop_write_data(&data, 1);
  38
  39     int delay = 32;
  40     do {
  41         nop;
  42     } while(delay--);
  43
  44     DBOP_TIMPOL_23 = 0xA12FE037;
  45 }
  46
  47 void lcd_write_reg(int reg, int value)
  48 {
  49     int16_t data = swap16(value);
  50     lcd_write_cmd(reg);
  51     dbop_write_data(&data, 1);
  52 }
  53
  54
  55 static void as3525_dbop_init(void)
  56 {
  57     CCU_IO |= 1<<12;
  58     CGU_DBOP |= (1<<4) | (1<<3) | AS3525_DBOP_DIV;
  59     DBOP_TIMPOL_01 = 0xE12FE12F;
  60     DBOP_TIMPOL_23 = 0xE12F0036;
  61     DBOP_CTRL = 0x41004;
  62     DBOP_TIMPOL_23 = 0x60036;
  63     DBOP_CTRL = 0x51004;
  64     DBOP_TIMPOL_01 = 0x60036;
  65     DBOP_TIMPOL_23 = 0xA12FE037;
  66 }
  67
  68
  69 void lcd_init_device(void)
  70 {
  71     as3525_dbop_init();
  72
  73     GPIOA_DIR |= (0x20|0x1);
  74     GPIOA_DIR &= ~(1<<3);
  75     GPIOA_PIN(3) = 0;
  76     GPIOA_PIN(0) = 1;
  77     GPIOA_PIN(4) = 0;
  78
  79     GPIOB_DIR |= (1<<0)|(1<<2)|(1<<3);
  80     GPIOB_PIN(0) = 1<<0;
  81     GPIOB_PIN(2) = 1<<2;
  82     GPIOB_PIN(3) = 1<<3;
  83
  84     GPIOA_PIN(4) = 1<<4;
  85     GPIOA_PIN(5) = 1<<5;
  86
  87     fuze_display_on();
  88 }