cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

patch_cmedia.c (2842B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Universal Interface for Intel High Definition Audio Codec
      4 *
      5 * HD audio interface patch 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 "hda_generic.h"
     19
     20struct cmi_spec {
     21	struct hda_gen_spec gen;
     22};
     23
     24/*
     25 * stuff for auto-parser
     26 */
     27static const struct hda_codec_ops cmi_auto_patch_ops = {
     28	.build_controls = snd_hda_gen_build_controls,
     29	.build_pcms = snd_hda_gen_build_pcms,
     30	.init = snd_hda_gen_init,
     31	.free = snd_hda_gen_free,
     32	.unsol_event = snd_hda_jack_unsol_event,
     33};
     34
     35static int patch_cmi9880(struct hda_codec *codec)
     36{
     37	struct cmi_spec *spec;
     38	struct auto_pin_cfg *cfg;
     39	int err;
     40
     41	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
     42	if (spec == NULL)
     43		return -ENOMEM;
     44
     45	codec->spec = spec;
     46	codec->patch_ops = cmi_auto_patch_ops;
     47	cfg = &spec->gen.autocfg;
     48	snd_hda_gen_spec_init(&spec->gen);
     49
     50	err = snd_hda_parse_pin_defcfg(codec, cfg, NULL, 0);
     51	if (err < 0)
     52		goto error;
     53	err = snd_hda_gen_parse_auto_config(codec, cfg);
     54	if (err < 0)
     55		goto error;
     56
     57	return 0;
     58
     59 error:
     60	snd_hda_gen_free(codec);
     61	return err;
     62}
     63
     64static int patch_cmi8888(struct hda_codec *codec)
     65{
     66	struct cmi_spec *spec;
     67	struct auto_pin_cfg *cfg;
     68	int err;
     69
     70	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
     71	if (!spec)
     72		return -ENOMEM;
     73
     74	codec->spec = spec;
     75	codec->patch_ops = cmi_auto_patch_ops;
     76	cfg = &spec->gen.autocfg;
     77	snd_hda_gen_spec_init(&spec->gen);
     78
     79	/* mask NID 0x10 from the playback volume selection;
     80	 * it's a headphone boost volume handled manually below
     81	 */
     82	spec->gen.out_vol_mask = (1ULL << 0x10);
     83
     84	err = snd_hda_parse_pin_defcfg(codec, cfg, NULL, 0);
     85	if (err < 0)
     86		goto error;
     87	err = snd_hda_gen_parse_auto_config(codec, cfg);
     88	if (err < 0)
     89		goto error;
     90
     91	if (get_defcfg_device(snd_hda_codec_get_pincfg(codec, 0x10)) ==
     92	    AC_JACK_HP_OUT) {
     93		static const struct snd_kcontrol_new amp_kctl =
     94			HDA_CODEC_VOLUME("Headphone Amp Playback Volume",
     95					 0x10, 0, HDA_OUTPUT);
     96		if (!snd_hda_gen_add_kctl(&spec->gen, NULL, &amp_kctl)) {
     97			err = -ENOMEM;
     98			goto error;
     99		}
    100	}
    101
    102	return 0;
    103
    104 error:
    105	snd_hda_gen_free(codec);
    106	return err;
    107}
    108
    109/*
    110 * patch entries
    111 */
    112static const struct hda_device_id snd_hda_id_cmedia[] = {
    113	HDA_CODEC_ENTRY(0x13f68888, "CMI8888", patch_cmi8888),
    114	HDA_CODEC_ENTRY(0x13f69880, "CMI9880", patch_cmi9880),
    115	HDA_CODEC_ENTRY(0x434d4980, "CMI9880", patch_cmi9880),
    116	{} /* terminator */
    117};
    118MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_cmedia);
    119
    120MODULE_LICENSE("GPL");
    121MODULE_DESCRIPTION("C-Media HD-audio codec");
    122
    123static struct hda_codec_driver cmedia_driver = {
    124	.id = snd_hda_id_cmedia,
    125};
    126
    127module_hda_codec_driver(cmedia_driver);