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 <linux/delay.h> 25 #include <linux/interrupt.h> 26 #include <linux/init.h> 27 #include <sound/core.h> 28 29 #include "ice1712.h" 30 #include "envy24ht.h" 31 #include "amp.h" 32 33 static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val) 34 { 35 unsigned short cval; 36 cval = (reg << 9) | val; 37 snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff); 38 } 39 40 static int snd_vt1724_amp_init(struct snd_ice1712 *ice) 41 { 42 static const unsigned short wm_inits[] = { 43 WM_ATTEN_L, 0x0000, /* 0 db */ 44 WM_ATTEN_R, 0x0000, /* 0 db */ 45 WM_DAC_CTRL, 0x0008, /* 24bit I2S */ 46 WM_INT_CTRL, 0x0001, /* 24bit I2S */ 47 }; 48 49 unsigned int i; 50 51 /* only use basic functionality for now */ 52 53 /* VT1616 6ch codec connected to PSDOUT0 using packed mode */ 54 ice->num_total_dacs = 6; 55 ice->num_total_adcs = 2; 56 57 /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4 58 (shared with the SPDIF output). Mixer control for this codec 59 is not yet supported. */ 60 if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) { 61 for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2) 62 wm_put(ice, wm_inits[i], wm_inits[i+1]); 63 } 64 65 return 0; 66 } 67 68 static int snd_vt1724_amp_add_controls(struct snd_ice1712 *ice) 69 { 70 if (ice->ac97) 71 /* we use pins 39 and 41 of the VT1616 for left and right 72 read outputs */ 73 snd_ac97_write_cache(ice->ac97, 0x5a, 74 snd_ac97_read(ice->ac97, 0x5a) & ~0x8000); 75 return 0; 76 } 77 78 79 /* entry point */ 80 struct snd_ice1712_card_info snd_vt1724_amp_cards[] = { 81 { 82 .subvendor = VT1724_SUBDEVICE_AV710, 83 .name = "Chaintech AV-710", 84 .model = "av710", 85 .chip_init = snd_vt1724_amp_init, 86 .build_controls = snd_vt1724_amp_add_controls, 87 }, 88 { 89 .subvendor = VT1724_SUBDEVICE_AUDIO2000, 90 .name = "AMP Ltd AUDIO2000", 91 .model = "amp2000", 92 .chip_init = snd_vt1724_amp_init, 93 .build_controls = snd_vt1724_amp_add_controls, 94 }, 95 { } /* terminator */ 96 }; 97 98