149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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// Copyright (c) 2020 Intel Corporation
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//
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// sof_sdw_max98373 - Helpers to handle 2x MAX98373
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// codec devices from generic machine driver
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <sound/control.h>
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#include <sound/soc.h>
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#include <sound/soc-acpi.h>
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#include <sound/soc-dapm.h>
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#include "sof_sdw_common.h"
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#include "sof_maxim_common.h"
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static const struct snd_soc_dapm_widget mx8373_widgets[] = {
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SND_SOC_DAPM_SPK("Left Spk", NULL),
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SND_SOC_DAPM_SPK("Right Spk", NULL),
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};
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static const struct snd_kcontrol_new mx8373_controls[] = {
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SOC_DAPM_PIN_SWITCH("Left Spk"),
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SOC_DAPM_PIN_SWITCH("Right Spk"),
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};
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static int spk_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_card *card = rtd->card;
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int ret;
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card->components = devm_kasprintf(card->dev, GFP_KERNEL,
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"%s spk:mx8373",
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card->components);
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if (!card->components)
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return -ENOMEM;
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ret = snd_soc_add_card_controls(card, mx8373_controls,
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ARRAY_SIZE(mx8373_controls));
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if (ret) {
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dev_err(card->dev, "mx8373 ctrls addition failed: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dapm_new_controls(&card->dapm, mx8373_widgets,
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ARRAY_SIZE(mx8373_widgets));
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if (ret) {
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dev_err(card->dev, "mx8373 widgets addition failed: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
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if (ret)
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dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
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return ret;
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}
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static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
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{
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
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struct snd_soc_dai *codec_dai;
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struct snd_soc_dai *cpu_dai;
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int ret;
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int j;
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/* set spk pin by playback only */
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if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
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return 0;
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cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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for_each_rtd_codec_dais(rtd, j, codec_dai) {
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struct snd_soc_dapm_context *dapm =
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snd_soc_component_get_dapm(cpu_dai->component);
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char pin_name[16];
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snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
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codec_dai->component->name_prefix);
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if (enable)
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ret = snd_soc_dapm_enable_pin(dapm, pin_name);
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else
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ret = snd_soc_dapm_disable_pin(dapm, pin_name);
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if (!ret)
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snd_soc_dapm_sync(dapm);
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}
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return 0;
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}
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static int mx8373_sdw_prepare(struct snd_pcm_substream *substream)
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{
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int ret;
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/* according to soc_pcm_prepare dai link prepare is called first */
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ret = sdw_prepare(substream);
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if (ret < 0)
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return ret;
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return mx8373_enable_spk_pin(substream, true);
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}
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static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream)
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{
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int ret;
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/* according to soc_pcm_hw_free dai link free is called first */
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ret = sdw_hw_free(substream);
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if (ret < 0)
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return ret;
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return mx8373_enable_spk_pin(substream, false);
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}
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static const struct snd_soc_ops max_98373_sdw_ops = {
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.startup = sdw_startup,
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.prepare = mx8373_sdw_prepare,
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.trigger = sdw_trigger,
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.hw_free = mx8373_sdw_hw_free,
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.shutdown = sdw_shutdown,
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};
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int sof_sdw_mx8373_init(struct snd_soc_card *card,
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const struct snd_soc_acpi_link_adr *link,
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struct snd_soc_dai_link *dai_links,
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struct sof_sdw_codec_info *info,
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bool playback)
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{
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info->amp_num++;
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if (info->amp_num == 2)
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dai_links->init = spk_init;
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info->late_probe = true;
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dai_links->ops = &max_98373_sdw_ops;
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return 0;
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}
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int sof_sdw_mx8373_late_probe(struct snd_soc_card *card)
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{
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struct snd_soc_dapm_context *dapm = &card->dapm;
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/* Disable Left and Right Spk pin after boot */
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snd_soc_dapm_disable_pin(dapm, "Left Spk");
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snd_soc_dapm_disable_pin(dapm, "Right Spk");
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return snd_soc_dapm_sync(dapm);
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}
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