1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Universal codec driver for Intel High Definition Audio Codec
4 *
5 * HD audio codec driver for C-Media CMI9880
6 *
7 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
8 */
9
10#include <linux/init.h>
11#include <linux/slab.h>
12#include <linux/module.h>
13#include <sound/core.h>
14#include <sound/hda_codec.h>
15#include "hda_local.h"
16#include "hda_auto_parser.h"
17#include "hda_jack.h"
18#include "generic.h"
19
20static int cmedia_probe(struct hda_codec *codec, const struct hda_device_id *id)
21{
22 struct hda_gen_spec *spec;
23 struct auto_pin_cfg *cfg;
24 bool is_cmi8888 = id->vendor_id == 0x13f68888;
25 int err;
26
27 spec = kzalloc(sizeof(*spec), GFP_KERNEL);
28 if (spec == NULL)
29 return -ENOMEM;
30
31 codec->spec = spec;
32 cfg = &spec->autocfg;
33 snd_hda_gen_spec_init(spec);
34
35 if (is_cmi8888) {
36 /* mask NID 0x10 from the playback volume selection;
37 * it's a headphone boost volume handled manually below
38 */
39 spec->out_vol_mask = (1ULL << 0x10);
40 }
41
42 err = snd_hda_parse_pin_defcfg(codec, cfg, NULL, cond_flags: 0);
43 if (err < 0)
44 goto error;
45 err = snd_hda_gen_parse_auto_config(codec, cfg);
46 if (err < 0)
47 goto error;
48
49 err = snd_hda_parse_pin_defcfg(codec, cfg, NULL, cond_flags: 0);
50 if (err < 0)
51 goto error;
52 err = snd_hda_gen_parse_auto_config(codec, cfg);
53 if (err < 0)
54 goto error;
55
56 if (is_cmi8888) {
57 if (get_defcfg_device(snd_hda_codec_get_pincfg(codec, 0x10)) ==
58 AC_JACK_HP_OUT) {
59 static const struct snd_kcontrol_new amp_kctl =
60 HDA_CODEC_VOLUME("Headphone Amp Playback Volume",
61 0x10, 0, HDA_OUTPUT);
62 if (!snd_hda_gen_add_kctl(spec, NULL, temp: &amp_kctl)) {
63 err = -ENOMEM;
64 goto error;
65 }
66 }
67 }
68
69 return 0;
70
71 error:
72 snd_hda_gen_remove(codec);
73 return err;
74}
75
76static const struct hda_codec_ops cmedia_codec_ops = {
77 .probe = cmedia_probe,
78 .remove = snd_hda_gen_remove,
79 .build_controls = snd_hda_gen_build_controls,
80 .build_pcms = snd_hda_gen_build_pcms,
81 .init = snd_hda_gen_init,
82 .unsol_event = snd_hda_jack_unsol_event,
83 .check_power_status = snd_hda_gen_check_power_status,
84 .stream_pm = snd_hda_gen_stream_pm,
85};
86
87/*
88 * driver entries
89 */
90static const struct hda_device_id snd_hda_id_cmedia[] = {
91 HDA_CODEC_ID(0x13f68888, "CMI8888"),
92 HDA_CODEC_ID(0x13f69880, "CMI9880"),
93 HDA_CODEC_ID(0x434d4980, "CMI9880"),
94 {} /* terminator */
95};
96MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_cmedia);
97
98MODULE_LICENSE("GPL");
99MODULE_DESCRIPTION("C-Media HD-audio codec");
100
101static struct hda_codec_driver cmedia_driver = {
102 .id = snd_hda_id_cmedia,
103 .ops = &cmedia_codec_ops,
104};
105
106module_hda_codec_driver(cmedia_driver);
107

source code of linux/sound/hda/codecs/cmedia.c