cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sof_sdw_rt711.c (4558B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2// Copyright (c) 2020 Intel Corporation
      3
      4/*
      5 *  sof_sdw_rt711 - Helpers to handle RT711 from generic machine driver
      6 */
      7
      8#include <linux/device.h>
      9#include <linux/errno.h>
     10#include <linux/input.h>
     11#include <linux/soundwire/sdw.h>
     12#include <linux/soundwire/sdw_type.h>
     13#include <sound/control.h>
     14#include <sound/soc.h>
     15#include <sound/soc-acpi.h>
     16#include <sound/soc-dapm.h>
     17#include <sound/jack.h>
     18#include "sof_sdw_common.h"
     19
     20/*
     21 * Note this MUST be called before snd_soc_register_card(), so that the props
     22 * are in place before the codec component driver's probe function parses them.
     23 */
     24static int rt711_add_codec_device_props(struct device *sdw_dev)
     25{
     26	struct property_entry props[MAX_NO_PROPS] = {};
     27	struct fwnode_handle *fwnode;
     28	int ret;
     29
     30	if (!SOF_RT711_JDSRC(sof_sdw_quirk))
     31		return 0;
     32	props[0] = PROPERTY_ENTRY_U32("realtek,jd-src", SOF_RT711_JDSRC(sof_sdw_quirk));
     33
     34	fwnode = fwnode_create_software_node(props, NULL);
     35	if (IS_ERR(fwnode))
     36		return PTR_ERR(fwnode);
     37
     38	ret = device_add_software_node(sdw_dev, to_software_node(fwnode));
     39
     40	fwnode_handle_put(fwnode);
     41
     42	return ret;
     43}
     44
     45static const struct snd_soc_dapm_widget rt711_widgets[] = {
     46	SND_SOC_DAPM_HP("Headphone", NULL),
     47	SND_SOC_DAPM_MIC("Headset Mic", NULL),
     48};
     49
     50static const struct snd_soc_dapm_route rt711_map[] = {
     51	/* Headphones */
     52	{ "Headphone", NULL, "rt711 HP" },
     53	{ "rt711 MIC2", NULL, "Headset Mic" },
     54};
     55
     56static const struct snd_kcontrol_new rt711_controls[] = {
     57	SOC_DAPM_PIN_SWITCH("Headphone"),
     58	SOC_DAPM_PIN_SWITCH("Headset Mic"),
     59};
     60
     61static struct snd_soc_jack_pin rt711_jack_pins[] = {
     62	{
     63		.pin    = "Headphone",
     64		.mask   = SND_JACK_HEADPHONE,
     65	},
     66	{
     67		.pin    = "Headset Mic",
     68		.mask   = SND_JACK_MICROPHONE,
     69	},
     70};
     71
     72static int rt711_rtd_init(struct snd_soc_pcm_runtime *rtd)
     73{
     74	struct snd_soc_card *card = rtd->card;
     75	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
     76	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
     77	struct snd_soc_component *component = codec_dai->component;
     78	struct snd_soc_jack *jack;
     79	int ret;
     80
     81	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
     82					  "%s hs:rt711",
     83					  card->components);
     84	if (!card->components)
     85		return -ENOMEM;
     86
     87	ret = snd_soc_add_card_controls(card, rt711_controls,
     88					ARRAY_SIZE(rt711_controls));
     89	if (ret) {
     90		dev_err(card->dev, "rt711 controls addition failed: %d\n", ret);
     91		return ret;
     92	}
     93
     94	ret = snd_soc_dapm_new_controls(&card->dapm, rt711_widgets,
     95					ARRAY_SIZE(rt711_widgets));
     96	if (ret) {
     97		dev_err(card->dev, "rt711 widgets addition failed: %d\n", ret);
     98		return ret;
     99	}
    100
    101	ret = snd_soc_dapm_add_routes(&card->dapm, rt711_map,
    102				      ARRAY_SIZE(rt711_map));
    103
    104	if (ret) {
    105		dev_err(card->dev, "rt711 map addition failed: %d\n", ret);
    106		return ret;
    107	}
    108
    109	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",
    110					 SND_JACK_HEADSET | SND_JACK_BTN_0 |
    111					 SND_JACK_BTN_1 | SND_JACK_BTN_2 |
    112					 SND_JACK_BTN_3,
    113					 &ctx->sdw_headset,
    114					 rt711_jack_pins,
    115					 ARRAY_SIZE(rt711_jack_pins));
    116	if (ret) {
    117		dev_err(rtd->card->dev, "Headset Jack creation failed: %d\n",
    118			ret);
    119		return ret;
    120	}
    121
    122	jack = &ctx->sdw_headset;
    123
    124	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
    125	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
    126	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
    127	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
    128
    129	ret = snd_soc_component_set_jack(component, jack, NULL);
    130
    131	if (ret)
    132		dev_err(rtd->card->dev, "Headset Jack call-back failed: %d\n",
    133			ret);
    134
    135	return ret;
    136}
    137
    138int sof_sdw_rt711_exit(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link)
    139{
    140	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
    141
    142	device_remove_software_node(ctx->headset_codec_dev);
    143	put_device(ctx->headset_codec_dev);
    144
    145	return 0;
    146}
    147
    148int sof_sdw_rt711_init(struct snd_soc_card *card,
    149		       const struct snd_soc_acpi_link_adr *link,
    150		       struct snd_soc_dai_link *dai_links,
    151		       struct sof_sdw_codec_info *info,
    152		       bool playback)
    153{
    154	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
    155	struct device *sdw_dev;
    156	int ret;
    157
    158	/*
    159	 * headset should be initialized once.
    160	 * Do it with dai link for playback.
    161	 */
    162	if (!playback)
    163		return 0;
    164
    165	sdw_dev = bus_find_device_by_name(&sdw_bus_type, NULL, dai_links->codecs[0].name);
    166	if (!sdw_dev)
    167		return -EPROBE_DEFER;
    168
    169	ret = rt711_add_codec_device_props(sdw_dev);
    170	if (ret < 0) {
    171		put_device(sdw_dev);
    172		return ret;
    173	}
    174	ctx->headset_codec_dev = sdw_dev;
    175
    176	dai_links->init = rt711_rtd_init;
    177
    178	return 0;
    179}