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 <linux/slab.h> 29 #include <sound/core.h> 30 31 #include "ice1712.h" 32 #include "envy24ht.h" 33 #include "amp.h" 34 35 static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val) 36 { 37 unsigned short cval; 38 cval = (reg << 9) | val; 39 snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff); 40 } 41 42 static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice) 43 { 44 static const unsigned short wm_inits[] = { 45 WM_ATTEN_L, 0x0000, /* 0 db */ 46 WM_ATTEN_R, 0x0000, /* 0 db */ 47 WM_DAC_CTRL, 0x0008, /* 24bit I2S */ 48 WM_INT_CTRL, 0x0001, /* 24bit I2S */ 49 }; 50 51 unsigned int i; 52 53 /* only use basic functionality for now */ 54 55 /* VT1616 6ch codec connected to PSDOUT0 using packed mode */ 56 ice->num_total_dacs = 6; 57 ice->num_total_adcs = 2; 58 59 /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4 60 (shared with the SPDIF output). Mixer control for this codec 61 is not yet supported. */ 62 if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) { 63 for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2) 64 wm_put(ice, wm_inits[i], wm_inits[i+1]); 65 } 66 67 return 0; 68 } 69 70 static int __devinit snd_vt1724_amp_add_controls(struct snd_ice1712 *ice) 71 { 72 /* we use pins 39 and 41 of the VT1616 for left and right read outputs */ 73 snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000); 74 return 0; 75 } 76 77 78 /* entry point */ 79 struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = { 80 { 81 .subvendor = VT1724_SUBDEVICE_AV710, 82 .name = "Chaintech AV-710", 83 .model = "av710", 84 .chip_init = snd_vt1724_amp_init, 85 .build_controls = snd_vt1724_amp_add_controls, 86 }, 87 { 88 .subvendor = VT1724_SUBDEVICE_AUDIO2000, 89 .name = "AMP Ltd AUDIO2000", 90 .model = "amp2000", 91 .chip_init = snd_vt1724_amp_init, 92 .build_controls = snd_vt1724_amp_add_controls, 93 }, 94 { } /* terminator */ 95 }; 96 97