David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 1 | /* ASB2303 peripheral 7-segment LEDs x1 support |
| 2 | * |
| 3 | * Copyright (C) 2007 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 Licence |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the Licence, or (at your option) any later version. |
| 10 | */ |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/param.h> |
| 13 | #include <linux/init.h> |
| 14 | |
| 15 | #include <asm/io.h> |
| 16 | #include <asm/processor.h> |
| 17 | #include <asm/intctl-regs.h> |
| 18 | #include <asm/rtc-regs.h> |
David Howells | 2f2a213 | 2009-04-10 14:33:48 +0100 | [diff] [blame] | 19 | #include <unit/leds.h> |
David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 20 | |
| 21 | #if 0 |
| 22 | static const u8 asb2303_led_hex_tbl[16] = { |
| 23 | 0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0, |
| 24 | 0x00, 0x20, 0x10, 0x06, 0x8c, 0x42, 0x0c, 0x1c |
| 25 | }; |
| 26 | #endif |
| 27 | |
| 28 | static const u8 asb2303_led_chase_tbl[6] = { |
| 29 | ~0x02, /* top - segA */ |
| 30 | ~0x04, /* right top - segB */ |
| 31 | ~0x08, /* right bottom - segC */ |
| 32 | ~0x10, /* bottom - segD */ |
| 33 | ~0x20, /* left bottom - segE */ |
| 34 | ~0x40, /* left top - segF */ |
| 35 | }; |
| 36 | |
| 37 | static unsigned asb2303_led_chase; |
| 38 | |
| 39 | void peripheral_leds_display_exception(enum exception_code code) |
| 40 | { |
| 41 | ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */ |
| 42 | ASB2303_7SEGLEDS = 0x6d; /* triple horizontal bar */ |
| 43 | } |
| 44 | |
| 45 | void peripheral_leds_led_chase(void) |
| 46 | { |
| 47 | ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */ |
| 48 | ASB2303_7SEGLEDS = asb2303_led_chase_tbl[asb2303_led_chase]; |
| 49 | asb2303_led_chase++; |
| 50 | if (asb2303_led_chase >= 6) |
| 51 | asb2303_led_chase = 0; |
| 52 | } |