LXR linux/sound/soc/sdw_utils/soc_sdw

   1// SPDX-License-Identifier: GPL-2.0-only
   2// This file incorporates work covered by the following copyright notice:
   3// Copyright (c) 2020 Intel Corporation
   4// Copyright (c) 2024 Advanced Micro Devices, Inc.
   5
   6/*
   7 *  soc_sdw_rt711 - Helpers to handle RT711 from generic machine driver
   8 */
   9
  10#include <linux/device.h>
  11#include <linux/errno.h>
  12#include <linux/input.h>
  13#include <linux/soundwire/sdw.h>
  14#include <linux/soundwire/sdw_type.h>
  15#include <sound/control.h>
  16#include <sound/soc.h>
  17#include <sound/soc-acpi.h>
  18#include <sound/soc-dapm.h>
  19#include <sound/jack.h>
  20#include <sound/soc_sdw_utils.h>
  21
  22/*
  23 * Note this MUST be called before snd_soc_register_card(), so that the props
  24 * are in place before the codec component driver's probe function parses them.
  25 */
  26static int rt711_add_codec_device_props(struct device *sdw_dev, unsigned long quirk)
  27{
  28        struct property_entry props[SOC_SDW_MAX_NO_PROPS] = {};
  29        struct fwnode_handle *fwnode;
  30        int ret;
  31
  32        if (!SOC_SDW_JACK_JDSRC(quirk))
  33                return 0;
  34        props[0] = PROPERTY_ENTRY_U32("realtek,jd-src", SOC_SDW_JACK_JDSRC(quirk));
  35
  36        fwnode = fwnode_create_software_node(props, NULL);
  37        if (IS_ERR(fwnode))
  38                return PTR_ERR(fwnode);
  39
  40        ret = device_add_software_node(sdw_dev, to_software_node(fwnode));
  41
  42        fwnode_handle_put(fwnode);
  43
  44        return ret;
  45}
  46
  47static const struct snd_soc_dapm_route rt711_map[] = {
  48        /* Headphones */
  49        { "Headphone", NULL, "rt711 HP" },
  50        { "rt711 MIC2", NULL, "Headset Mic" },
  51};
  52
  53static struct snd_soc_jack_pin rt711_jack_pins[] = {
  54        {
  55                .pin    = "Headphone",
  56                .mask   = SND_JACK_HEADPHONE,
  57        },
  58        {
  59                .pin    = "Headset Mic",
  60                .mask   = SND_JACK_MICROPHONE,
  61        },
  62};
  63
  64int asoc_sdw_rt711_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
  65{
  66        struct snd_soc_card *card = rtd->card;
  67        struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
  68        struct snd_soc_component *component;
  69        struct snd_soc_jack *jack;
  70        int ret;
  71
  72        component = dai->component;
  73        card->components = devm_kasprintf(card->dev, GFP_KERNEL,
  74                                          "%s hs:rt711",
  75                                          card->components);
  76        if (!card->components)
  77                return -ENOMEM;
  78
  79        ret = snd_soc_dapm_add_routes(&card->dapm, rt711_map,
  80                                      ARRAY_SIZE(rt711_map));
  81
  82        if (ret) {
  83                dev_err(card->dev, "rt711 map addition failed: %d\n", ret);
  84                return ret;
  85        }
  86
  87        ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",
  88                                         SND_JACK_HEADSET | SND_JACK_BTN_0 |
  89                                         SND_JACK_BTN_1 | SND_JACK_BTN_2 |
  90                                         SND_JACK_BTN_3,
  91                                         &ctx->sdw_headset,
  92                                         rt711_jack_pins,
  93                                         ARRAY_SIZE(rt711_jack_pins));
  94        if (ret) {
  95                dev_err(rtd->card->dev, "Headset Jack creation failed: %d\n",
  96                        ret);
  97                return ret;
  98        }
  99
 100        jack = &ctx->sdw_headset;
 101
 102        snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 103        snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 104        snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 105        snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 106
 107        ret = snd_soc_component_set_jack(component, jack, NULL);
 108
 109        if (ret)
 110                dev_err(rtd->card->dev, "Headset Jack call-back failed: %d\n",
 111                        ret);
 112
 113        return ret;
 114}
 115EXPORT_SYMBOL_NS(asoc_sdw_rt711_rtd_init, "SND_SOC_SDW_UTILS");
 116
 117int asoc_sdw_rt711_exit(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
 118{
 119        struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
 120
 121        if (!ctx->headset_codec_dev)
 122                return 0;
 123
 124        device_remove_software_node(ctx->headset_codec_dev);
 125        put_device(ctx->headset_codec_dev);
 126
 127        return 0;
 128}
 129EXPORT_SYMBOL_NS(asoc_sdw_rt711_exit, "SND_SOC_SDW_UTILS");
 130
 131int asoc_sdw_rt711_init(struct snd_soc_card *card,
 132                        struct snd_soc_dai_link *dai_links,
 133                        struct asoc_sdw_codec_info *info,
 134                        bool playback)
 135{
 136        struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
 137        struct device *sdw_dev;
 138        int ret;
 139
 140        /*
 141         * headset should be initialized once.
 142         * Do it with dai link for playback.
 143         */
 144        if (!playback)
 145                return 0;
 146
 147        sdw_dev = bus_find_device_by_name(&sdw_bus_type, NULL, dai_links->codecs[0].name);
 148        if (!sdw_dev)
 149                return -EPROBE_DEFER;
 150
 151        ret = rt711_add_codec_device_props(sdw_dev, ctx->mc_quirk);
 152        if (ret < 0) {
 153                put_device(sdw_dev);
 154                return ret;
 155        }
 156        ctx->headset_codec_dev = sdw_dev;
 157
 158        return 0;
 159}
 160EXPORT_SYMBOL_NS(asoc_sdw_rt711_init, "SND_SOC_SDW_UTILS");
 161