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
33static 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
40static 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
68static 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 */
80struct 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