2 * ALSA driver for ICEnsemble VT1724 (Envy24HT)
4 * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
6 * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
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.
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.
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
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>
35 static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
38 cval = (reg << 9) | val;
39 snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
42 static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice)
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 */
53 /* only use basic functionality for now */
55 ice->num_total_dacs = 2; /* only PSDOUT0 is connected */
56 ice->num_total_adcs = 2;
58 /* Chaintech AV-710 has another codecs, which need initialization */
59 /* initialize WM8728 codec */
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]);
68 static int __devinit snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
70 /* we use pins 39 and 41 of the VT1616 for left and right read outputs */
71 snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
77 struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = {
79 .subvendor = VT1724_SUBDEVICE_AV710,
80 .name = "Chaintech AV-710",
82 .chip_init = snd_vt1724_amp_init,
83 .build_controls = snd_vt1724_amp_add_controls,
86 .subvendor = VT1724_SUBDEVICE_AUDIO2000,
87 .name = "AMP Ltd AUDIO2000",
89 .chip_init = snd_vt1724_amp_init,
90 .build_controls = snd_vt1724_amp_add_controls,