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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 @@ | |||
1 | /* | ||
2 | * lcd44780.c | ||
3 | * Simple "driver" for a memory-mapped 44780-style LCD display. | ||
4 | * | ||
5 | * Copyright 2001 Bradley D. LaRonde <brad@ltc.com> | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify it | ||
8 | * under the terms of the GNU General Public License as published by the | ||
9 | * Free Software Foundation; either version 2 of the License, or (at your | ||
10 | * option) any later version. | ||
11 | * | ||
12 | */ | ||
13 | |||
14 | #define LCD44780_COMMAND ((volatile unsigned char *)0xbe020000) | ||
15 | #define LCD44780_DATA ((volatile unsigned char *)0xbe020001) | ||
16 | |||
17 | #define LCD44780_4BIT_1LINE 0x20 | ||
18 | #define LCD44780_4BIT_2LINE 0x28 | ||
19 | #define LCD44780_8BIT_1LINE 0x30 | ||
20 | #define LCD44780_8BIT_2LINE 0x38 | ||
21 | #define LCD44780_MODE_DEC 0x04 | ||
22 | #define LCD44780_MODE_DEC_SHIFT 0x05 | ||
23 | #define LCD44780_MODE_INC 0x06 | ||
24 | #define LCD44780_MODE_INC_SHIFT 0x07 | ||
25 | #define LCD44780_SCROLL_LEFT 0x18 | ||
26 | #define LCD44780_SCROLL_RIGHT 0x1e | ||
27 | #define LCD44780_CURSOR_UNDERLINE 0x0e | ||
28 | #define LCD44780_CURSOR_BLOCK 0x0f | ||
29 | #define LCD44780_CURSOR_OFF 0x0c | ||
30 | #define LCD44780_CLEAR 0x01 | ||
31 | #define LCD44780_BLANK 0x08 | ||
32 | #define LCD44780_RESTORE 0x0c // Same as CURSOR_OFF | ||
33 | #define LCD44780_HOME 0x02 | ||
34 | #define LCD44780_LEFT 0x10 | ||
35 | #define LCD44780_RIGHT 0x14 | ||
36 | |||
37 | void lcd44780_wait(void) | ||
38 | { | ||
39 | int i, j; | ||
40 | for(i=0; i < 400; i++) | ||
41 | for(j=0; j < 10000; j++); | ||
42 | } | ||
43 | |||
44 | void lcd44780_command(unsigned char c) | ||
45 | { | ||
46 | *LCD44780_COMMAND = c; | ||
47 | lcd44780_wait(); | ||
48 | } | ||
49 | |||
50 | void lcd44780_data(unsigned char c) | ||
51 | { | ||
52 | *LCD44780_DATA = c; | ||
53 | lcd44780_wait(); | ||
54 | } | ||
55 | |||
56 | void lcd44780_puts(const char* s) | ||
57 | { | ||
58 | int j; | ||
59 | int pos = 0; | ||
60 | |||
61 | lcd44780_command(LCD44780_CLEAR); | ||
62 | while(*s) { | ||
63 | lcd44780_data(*s); | ||
64 | s++; | ||
65 | pos++; | ||
66 | if (pos == 8) { | ||
67 | /* We must write 32 of spaces to get cursor to 2nd line */ | ||
68 | for (j=0; j<32; j++) { | ||
69 | lcd44780_data(' '); | ||
70 | } | ||
71 | } | ||
72 | if (pos == 16) { | ||
73 | /* We have filled all 16 character positions, so stop | ||
74 | outputing data */ | ||
75 | break; | ||
76 | } | ||
77 | } | ||
78 | #ifdef LCD44780_PUTS_PAUSE | ||
79 | { | ||
80 | int i; | ||
81 | |||
82 | for(i = 1; i < 2000; i++) | ||
83 | lcd44780_wait(); | ||
84 | } | ||
85 | #endif | ||
86 | } | ||
87 | |||
88 | void lcd44780_init(void) | ||
89 | { | ||
90 | // The display on the RockHopper is physically a single | ||
91 | // 16 char line (two 8 char lines concatenated). bdl | ||
92 | lcd44780_command(LCD44780_8BIT_2LINE); | ||
93 | lcd44780_command(LCD44780_MODE_INC); | ||
94 | lcd44780_command(LCD44780_CURSOR_BLOCK); | ||
95 | lcd44780_command(LCD44780_CLEAR); | ||
96 | } | ||