1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ALSA driver for ICEnsemble VT1724 (Envy24HT)
4 *
5 * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
6 *
7 * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
8 */
9
10 #include <linux/delay.h>
11 #include <linux/interrupt.h>
12 #include <linux/init.h>
13 #include <sound/core.h>
14
15 #include "ice1712.h"
16 #include "envy24ht.h"
17 #include "amp.h"
18
19 static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
20 {
21 unsigned short cval;
22 cval = (reg << 9) | val;
23 snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
24 }
25
26 static int snd_vt1724_amp_init(struct snd_ice1712 *ice)
27 {
28 static const unsigned short wm_inits[] = {
29 WM_ATTEN_L, 0x0000, /* 0 db */
30 WM_ATTEN_R, 0x0000, /* 0 db */
31 WM_DAC_CTRL, 0x0008, /* 24bit I2S */
32 WM_INT_CTRL, 0x0001, /* 24bit I2S */
33 };
34
35 unsigned int i;
36
37 /* only use basic functionality for now */
38
39 /* VT1616 6ch codec connected to PSDOUT0 using packed mode */
40 ice->num_total_dacs = 6;
41 ice->num_total_adcs = 2;
42
43 /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4
44 (shared with the SPDIF output). Mixer control for this codec
45 is not yet supported. */
46 if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
47 for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
48 wm_put(ice, wm_inits[i], wm_inits[i+1]);
49 }
50
51 return 0;
52 }
53
54 static int snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
55 {
56 if (ice->ac97)
57 /* we use pins 39 and 41 of the VT1616 for left and right
58 read outputs */
59 snd_ac97_write_cache(ice->ac97, 0x5a,
60 snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
61 return 0;
62 }
63
64
65 /* entry point */
66 struct snd_ice1712_card_info snd_vt1724_amp_cards[] = {
67 {
68 .subvendor = VT1724_SUBDEVICE_AV710,
69 .name = "Chaintech AV-710",
70 .model = "av710",
71 .chip_init = snd_vt1724_amp_init,
72 .build_controls = snd_vt1724_amp_add_controls,
73 },
74 {
75 .subvendor = VT1724_SUBDEVICE_AUDIO2000,
76 .name = "AMP Ltd AUDIO2000",
77 .model = "amp2000",
78 .chip_init = snd_vt1724_amp_init,
79 .build_controls = snd_vt1724_amp_add_controls,
80 },
81 { } /* terminator */
82 };
83
84
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