diff options
Diffstat (limited to 'arch/mips/ddb5xxx/ddb5477/lcd44780.c')
-rw-r--r-- | arch/mips/ddb5xxx/ddb5477/lcd44780.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/arch/mips/ddb5xxx/ddb5477/lcd44780.c b/arch/mips/ddb5xxx/ddb5477/lcd44780.c deleted file mode 100644 index 9510b9ae6453..000000000000 --- a/arch/mips/ddb5xxx/ddb5477/lcd44780.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - * lcd44780.c - * Simple "driver" for a memory-mapped 44780-style LCD display. - * - * Copyright 2001 Bradley D. LaRonde <brad@ltc.com> - * - * 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. - * - */ - -#define LCD44780_COMMAND ((volatile unsigned char *)0xbe020000) -#define LCD44780_DATA ((volatile unsigned char *)0xbe020001) - -#define LCD44780_4BIT_1LINE 0x20 -#define LCD44780_4BIT_2LINE 0x28 -#define LCD44780_8BIT_1LINE 0x30 -#define LCD44780_8BIT_2LINE 0x38 -#define LCD44780_MODE_DEC 0x04 -#define LCD44780_MODE_DEC_SHIFT 0x05 -#define LCD44780_MODE_INC 0x06 -#define LCD44780_MODE_INC_SHIFT 0x07 -#define LCD44780_SCROLL_LEFT 0x18 -#define LCD44780_SCROLL_RIGHT 0x1e -#define LCD44780_CURSOR_UNDERLINE 0x0e -#define LCD44780_CURSOR_BLOCK 0x0f -#define LCD44780_CURSOR_OFF 0x0c -#define LCD44780_CLEAR 0x01 -#define LCD44780_BLANK 0x08 -#define LCD44780_RESTORE 0x0c // Same as CURSOR_OFF -#define LCD44780_HOME 0x02 -#define LCD44780_LEFT 0x10 -#define LCD44780_RIGHT 0x14 - -void lcd44780_wait(void) -{ - int i, j; - for(i=0; i < 400; i++) - for(j=0; j < 10000; j++); -} - -void lcd44780_command(unsigned char c) -{ - *LCD44780_COMMAND = c; - lcd44780_wait(); -} - -void lcd44780_data(unsigned char c) -{ - *LCD44780_DATA = c; - lcd44780_wait(); -} - -void lcd44780_puts(const char* s) -{ - int j; - int pos = 0; - - lcd44780_command(LCD44780_CLEAR); - while(*s) { - lcd44780_data(*s); - s++; - pos++; - if (pos == 8) { - /* We must write 32 of spaces to get cursor to 2nd line */ - for (j=0; j<32; j++) { - lcd44780_data(' '); - } - } - if (pos == 16) { - /* We have filled all 16 character positions, so stop - outputing data */ - break; - } - } -#ifdef LCD44780_PUTS_PAUSE - { - int i; - - for(i = 1; i < 2000; i++) - lcd44780_wait(); - } -#endif -} - -void lcd44780_init(void) -{ - // The display on the RockHopper is physically a single - // 16 char line (two 8 char lines concatenated). bdl - lcd44780_command(LCD44780_8BIT_2LINE); - lcd44780_command(LCD44780_MODE_INC); - lcd44780_command(LCD44780_CURSOR_BLOCK); - lcd44780_command(LCD44780_CLEAR); -} |