| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2009 Libra Li <libra.li@technexion.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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| |
| #ifdef __PRE_RAM__ |
| |
| #include <arch/cpu.h> |
| #include "southbridge/amd/sb600/sb600.h" |
| |
| #else |
| |
| #include <arch/io.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include "southbridge/amd/sb600/sb600.h" |
| #include <delay.h> |
| |
| #endif /* __PRE_RAM__ */ |
| |
| #include "speaker.h" |
| |
| void speaker_init(uint8_t time) { |
| /* SB600 RRG. |
| * Options_0 - RW - 8 bits - [PM_Reg: 60h]. |
| * SpkrEn, bit[5]=1b, Setting this bit will configure GPIO2 to be speaker output. |
| */ |
| #ifdef __PRE_RAM__ |
| pmio_write(0x60, (pmio_read(0x60) | (1<<5))); |
| #else |
| pm_iowrite(0x60, (pm_ioread(0x60) | (1<<5))); |
| #endif /* __PRE_RAM__ */ |
| |
| /* SB600 RRG. |
| * Tmr1CntrlWord - RW - 8 bits - [IO_Reg: 43h]. |
| * ModeSelect, bit[3:1]=011b, Square wave output. |
| * CmmandSelect, bit[5:4]=11b, Read/write least, and then most significant byte. |
| * CounterSelect, bit[7:6]=10b, Select counter 2. |
| */ |
| outb(0xb6, 0x43); |
| |
| |
| /* SB600 RRG. |
| * TimerCh2- RW - 8 bits - [IO_Reg: 42h]. |
| */ |
| outb(time, 0x42); |
| } |
| |
| void speaker_on_nodelay(void) { |
| /* SB600 RRG. |
| * Nmi_Status - RW - 8 bits - [IO_Reg: 61h]. |
| * SpkrEnable, bit[0]=1b, Enable counter 2 |
| * SpkrTmrEnable, bit[1]=1b, Speaker timer on |
| */ |
| outb(inb(0x61) | 0x03, 0x61); |
| } |
| |
| void speaker_on_delay(void) { |
| speaker_on_nodelay(); |
| mdelay(100); |
| } |
| |
| void speaker_off_nodelay(void) { |
| /* SB600 RRG. |
| * Nmi_Status - RW - 8 bits - [IO_Reg: 61h]. |
| * SpkrEnable, bit[0]=0b, Disable counter 2 |
| * SpkrTmrEnable, bit[1]=0b, Speaker timer off |
| */ |
| outb(inb(0x61) & ~0x03, 0x61); |
| } |
| |
| void speaker_off_delay(void) { |
| speaker_off_nodelay(); |
| mdelay(100); |
| } |