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368dd5ac AT |
1 | /* leds.c: ASB2364 peripheral 7seg LEDs x4 support |
2 | * | |
3 | * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/param.h> | |
14 | #include <linux/init.h> | |
15 | ||
16 | #include <asm/io.h> | |
17 | #include <asm/processor.h> | |
18 | #include <asm/intctl-regs.h> | |
19 | #include <asm/rtc-regs.h> | |
20 | #include <unit/leds.h> | |
21 | ||
22 | #if MN10300_USE_7SEGLEDS | |
23 | static const u8 asb2364_led_hex_tbl[16] = { | |
24 | 0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0, | |
25 | 0x00, 0x20, 0x10, 0x06, 0x8c, 0x42, 0x0c, 0x1c | |
26 | }; | |
27 | ||
28 | static const u32 asb2364_led_chase_tbl[6] = { | |
29 | ~0x02020202, /* top - segA */ | |
30 | ~0x04040404, /* right top - segB */ | |
31 | ~0x08080808, /* right bottom - segC */ | |
32 | ~0x10101010, /* bottom - segD */ | |
33 | ~0x20202020, /* left bottom - segE */ | |
34 | ~0x40404040, /* left top - segF */ | |
35 | }; | |
36 | ||
37 | static unsigned asb2364_led_chase; | |
38 | ||
39 | void peripheral_leds7x4_display_dec(unsigned int val, unsigned int points) | |
40 | { | |
41 | u32 leds; | |
42 | ||
43 | leds = asb2364_led_hex_tbl[(val/1000) % 10]; | |
44 | leds <<= 8; | |
45 | leds |= asb2364_led_hex_tbl[(val/100) % 10]; | |
46 | leds <<= 8; | |
47 | leds |= asb2364_led_hex_tbl[(val/10) % 10]; | |
48 | leds <<= 8; | |
49 | leds |= asb2364_led_hex_tbl[val % 10]; | |
50 | leds |= points^0x01010101; | |
51 | ||
52 | ASB2364_7SEGLEDS = leds; | |
53 | } | |
54 | ||
55 | void peripheral_leds7x4_display_hex(unsigned int val, unsigned int points) | |
56 | { | |
57 | u32 leds; | |
58 | ||
59 | leds = asb2364_led_hex_tbl[(val/1000) % 10]; | |
60 | leds <<= 8; | |
61 | leds |= asb2364_led_hex_tbl[(val/100) % 10]; | |
62 | leds <<= 8; | |
63 | leds |= asb2364_led_hex_tbl[(val/10) % 10]; | |
64 | leds <<= 8; | |
65 | leds |= asb2364_led_hex_tbl[val % 10]; | |
66 | leds |= points^0x01010101; | |
67 | ||
68 | ASB2364_7SEGLEDS = leds; | |
69 | } | |
70 | ||
71 | /* display triple horizontal bar and exception code */ | |
72 | void peripheral_leds_display_exception(enum exception_code code) | |
73 | { | |
74 | u32 leds; | |
75 | ||
76 | leds = asb2364_led_hex_tbl[(code/0x100) % 0x10]; | |
77 | leds <<= 8; | |
78 | leds |= asb2364_led_hex_tbl[(code/0x10) % 0x10]; | |
79 | leds <<= 8; | |
80 | leds |= asb2364_led_hex_tbl[code % 0x10]; | |
81 | leds |= 0x6d010101; | |
82 | ||
83 | ASB2364_7SEGLEDS = leds; | |
84 | } | |
85 | ||
86 | void peripheral_leds_led_chase(void) | |
87 | { | |
88 | ASB2364_7SEGLEDS = asb2364_led_chase_tbl[asb2364_led_chase]; | |
89 | asb2364_led_chase++; | |
90 | if (asb2364_led_chase >= 6) | |
91 | asb2364_led_chase = 0; | |
92 | } | |
93 | #else /* MN10300_USE_7SEGLEDS */ | |
94 | void peripheral_leds7x4_display_dec(unsigned int val, unsigned int points) { } | |
95 | void peripheral_leds7x4_display_hex(unsigned int val, unsigned int points) { } | |
96 | void peripheral_leds_display_exception(enum exception_code code) { } | |
97 | void peripheral_leds_led_chase(void) { } | |
98 | #endif /* MN10300_USE_7SEGLEDS */ |