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@suse.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 <sound/driver.h>
25#include <asm/io.h>
26#include <linux/delay.h>
27#include <linux/interrupt.h>
28#include <linux/init.h>
29#include <linux/slab.h>
30#include <sound/core.h>
31
32#include "ice1712.h"
33#include "envy24ht.h"
34#include "amp.h"
35
36static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
37{
38	unsigned short cval;
39	cval = (reg << 9) | val;
40	snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
41}
42
43static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice)
44{
45	static const unsigned short wm_inits[] = {
46		WM_ATTEN_L,	0x0000,	/* 0 db */
47		WM_ATTEN_R,	0x0000,	/* 0 db */
48		WM_DAC_CTRL,	0x0008,	/* 24bit I2S */
49		WM_INT_CTRL,	0x0001, /* 24bit I2S */
50	};
51
52	unsigned int i;
53
54	/* only use basic functionality for now */
55
56	ice->num_total_dacs = 2;	/* only PSDOUT0 is connected */
57	ice->num_total_adcs = 2;
58
59	/* Chaintech AV-710 has another codecs, which need initialization */
60	/* initialize WM8728 codec */
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