1/* 2 * ALSA driver for ICEnsemble VT1724 (Envy24HT) 3 * 4 * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000 5 * 6 * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24#include <asm/io.h> 25#include <linux/delay.h> 26#include <linux/interrupt.h> 27#include <linux/init.h> 28#include <sound/core.h> 29 30#include "ice1712.h" 31#include "envy24ht.h" 32#include "amp.h" 33 34static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val) 35{ 36 unsigned short cval; 37 cval = (reg << 9) | val; 38 snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff); 39} 40 41static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice) 42{ 43 static const unsigned short wm_inits[] = { 44 WM_ATTEN_L, 0x0000, /* 0 db */ 45 WM_ATTEN_R, 0x0000, /* 0 db */ 46 WM_DAC_CTRL, 0x0008, /* 24bit I2S */ 47 WM_INT_CTRL, 0x0001, /* 24bit I2S */ 48 }; 49 50 unsigned int i; 51 52 /* only use basic functionality for now */ 53 54 /* VT1616 6ch codec connected to PSDOUT0 using packed mode */ 55 ice->num_total_dacs = 6; 56 ice->num_total_adcs = 2; 57 58 /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4 59 (shared with the SPDIF output). Mixer control for this codec 60 is not yet supported. */ 61 if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) { 62 for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2) 63 wm_put(ice, wm_inits[i], wm_inits[i+1]); 64 } 65 66 return 0; 67} 68 69static int __devinit snd_vt1724_amp_add_controls(struct snd_ice1712 *ice) 70{ 71 /* we use pins 39 and 41 of the VT1616 for left and right read outputs */ 72 snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000); 73 return 0; 74} 75 76 77/* entry point */ 78struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = { 79 { 80 .subvendor = VT1724_SUBDEVICE_AV710, 81 .name = "Chaintech AV-710", 82 .model = "av710", 83 .chip_init = snd_vt1724_amp_init, 84 .build_controls = snd_vt1724_amp_add_controls, 85 }, 86 { 87 .subvendor = VT1724_SUBDEVICE_AUDIO2000, 88 .name = "AMP Ltd AUDIO2000", 89 .model = "amp2000", 90 .chip_init = snd_vt1724_amp_init, 91 .build_controls = snd_vt1724_amp_add_controls, 92 }, 93 { } /* terminator */ 94}; 95