| /* ASB2303 peripheral 7-segment LEDs x1 support |
| * |
| * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public Licence |
| * as published by the Free Software Foundation; either version |
| * 2 of the Licence, or (at your option) any later version. |
| */ |
| #include <linux/kernel.h> |
| #include <linux/param.h> |
| #include <linux/init.h> |
| |
| #include <asm/io.h> |
| #include <asm/processor.h> |
| #include <asm/intctl-regs.h> |
| #include <asm/rtc-regs.h> |
| #include <unit/leds.h> |
| |
| #if 0 |
| static const u8 asb2303_led_hex_tbl[16] = { |
| 0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0, |
| 0x00, 0x20, 0x10, 0x06, 0x8c, 0x42, 0x0c, 0x1c |
| }; |
| #endif |
| |
| static const u8 asb2303_led_chase_tbl[6] = { |
| ~0x02, /* top - segA */ |
| ~0x04, /* right top - segB */ |
| ~0x08, /* right bottom - segC */ |
| ~0x10, /* bottom - segD */ |
| ~0x20, /* left bottom - segE */ |
| ~0x40, /* left top - segF */ |
| }; |
| |
| static unsigned asb2303_led_chase; |
| |
| void peripheral_leds_display_exception(enum exception_code code) |
| { |
| ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */ |
| ASB2303_7SEGLEDS = 0x6d; /* triple horizontal bar */ |
| } |
| |
| void peripheral_leds_led_chase(void) |
| { |
| ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */ |
| ASB2303_7SEGLEDS = asb2303_led_chase_tbl[asb2303_led_chase]; |
| asb2303_led_chase++; |
| if (asb2303_led_chase >= 6) |
| asb2303_led_chase = 0; |
| } |