1// SPDX-License-Identifier: GPL-2.0-only
  2// Copyright (c) 2020 Intel Corporation
  3
  4/*
  5 *  sof_sdw_rt1316 - Helpers to handle RT1316 from generic machine driver
  6 */
  7
  8#include <linux/device.h>
  9#include <linux/errno.h>
 10#include <sound/control.h>
 11#include <sound/soc.h>
 12#include <sound/soc-acpi.h>
 13#include <sound/soc-dapm.h>
 14#include "sof_sdw_common.h"
 15
 16static const struct snd_soc_dapm_widget rt1316_widgets[] = {
 17	SND_SOC_DAPM_SPK("Speaker", NULL),
 18};
 19
 20/*
 21 * dapm routes for rt1316 will be registered dynamically according
 22 * to the number of rt1316 used. The first two entries will be registered
 23 * for one codec case, and the last two entries are also registered
 24 * if two 1316s are used.
 25 */
 26static const struct snd_soc_dapm_route rt1316_map[] = {
 27	{ "Speaker", NULL, "rt1316-1 SPOL" },
 28	{ "Speaker", NULL, "rt1316-1 SPOR" },
 29	{ "Speaker", NULL, "rt1316-2 SPOL" },
 30	{ "Speaker", NULL, "rt1316-2 SPOR" },
 31};
 32
 33static const struct snd_kcontrol_new rt1316_controls[] = {
 34	SOC_DAPM_PIN_SWITCH("Speaker"),
 35};
 36
 37static int first_spk_init(struct snd_soc_pcm_runtime *rtd)
 38{
 39	struct snd_soc_card *card = rtd->card;
 40	int ret;
 41
 42	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
 43					  "%s spk:rt1316",
 44					  card->components);
 45	if (!card->components)
 46		return -ENOMEM;
 47
 48	ret = snd_soc_add_card_controls(card, rt1316_controls,
 49					ARRAY_SIZE(rt1316_controls));
 50	if (ret) {
 51		dev_err(card->dev, "rt1316 controls addition failed: %d\n", ret);
 52		return ret;
 53	}
 54
 55	ret = snd_soc_dapm_new_controls(&card->dapm, rt1316_widgets,
 56					ARRAY_SIZE(rt1316_widgets));
 57	if (ret) {
 58		dev_err(card->dev, "rt1316 widgets addition failed: %d\n", ret);
 59		return ret;
 60	}
 61
 62	ret = snd_soc_dapm_add_routes(&card->dapm, rt1316_map, 2);
 63	if (ret)
 64		dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
 65
 66	return ret;
 67}
 68
 69static int second_spk_init(struct snd_soc_pcm_runtime *rtd)
 70{
 71	struct snd_soc_card *card = rtd->card;
 72	int ret;
 73
 74	ret = snd_soc_dapm_add_routes(&card->dapm, rt1316_map + 2, 2);
 75	if (ret)
 76		dev_err(rtd->dev, "failed to add second SPK map: %d\n", ret);
 77
 78	return ret;
 79}
 80
 81static int all_spk_init(struct snd_soc_pcm_runtime *rtd)
 82{
 83	int ret;
 84
 85	ret = first_spk_init(rtd);
 86	if (ret)
 87		return ret;
 88
 89	return second_spk_init(rtd);
 90}
 91
 92int sof_sdw_rt1316_init(const struct snd_soc_acpi_link_adr *link,
 93			struct snd_soc_dai_link *dai_links,
 94			struct sof_sdw_codec_info *info,
 95			bool playback)
 96{
 97	/* Count amp number and do init on playback link only. */
 98	if (!playback)
 99		return 0;
100
101	info->amp_num++;
102	if (info->amp_num == 1)
103		dai_links->init = first_spk_init;
104
105	if (info->amp_num == 2) {
106		/*
107		 * if two 1316s are in one dai link, the init function
108		 * in this dai link will be first set for the first speaker,
109		 * and it should be reset to initialize all speakers when
110		 * the second speaker is found.
111		 */
112		if (dai_links->init)
113			dai_links->init = all_spk_init;
114		else
115			dai_links->init = second_spk_init;
116	}
117
118	return 0;
119}