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0f60ecffbf
The suggestion from UCM for 2 speaker components is using 1 "spk" tag with 2 component names. Like "spk:rt722+rt1320". The commit removes the creation of the "spk" components in each rtd_init callback and creat the string in asoc_sdw_rtd_init(). Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Shuming Fan <shumingf@realtek.com> Link: https://patch.msgid.link/20250625140430.311865-3-yung-chuan.liao@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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// This file incorporates work covered by the following copyright notice:
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// Copyright (c) 2023 Intel Corporation
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// Copyright (c) 2024 Advanced Micro Devices, Inc.
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/*
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* soc_sdw_cs_amp - Helpers to handle CS35L56 from generic machine driver
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*/
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#include <linux/device.h>
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#include <linux/errno.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-dai.h>
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#include <sound/soc_sdw_utils.h>
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#define CS_AMP_CHANNELS_PER_AMP 4
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#define CS35L56_SPK_VOLUME_0DB 400 /* 0dB Max */
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int asoc_sdw_cs35l56_volume_limit(struct snd_soc_card *card, const char *name_prefix)
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{
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char *volume_ctl_name;
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int ret;
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volume_ctl_name = kasprintf(GFP_KERNEL, "%s Speaker Volume", name_prefix);
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if (!volume_ctl_name)
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return -ENOMEM;
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ret = snd_soc_limit_volume(card, volume_ctl_name, CS35L56_SPK_VOLUME_0DB);
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if (ret)
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dev_err(card->dev, "%s limit set failed: %d\n", volume_ctl_name, ret);
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kfree(volume_ctl_name);
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return ret;
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}
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EXPORT_SYMBOL_NS(asoc_sdw_cs35l56_volume_limit, "SND_SOC_SDW_UTILS");
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int asoc_sdw_cs_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
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{
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struct snd_soc_card *card = rtd->card;
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char widget_name[16];
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struct snd_soc_dapm_route route = { "Speaker", NULL, widget_name };
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struct snd_soc_dai *codec_dai;
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int i, ret;
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for_each_rtd_codec_dais(rtd, i, codec_dai) {
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if (!strstr(codec_dai->name, "cs35l56"))
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continue;
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snprintf(widget_name, sizeof(widget_name), "%s SPK",
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codec_dai->component->name_prefix);
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ret = asoc_sdw_cs35l56_volume_limit(card, codec_dai->component->name_prefix);
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if (ret)
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return ret;
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ret = snd_soc_dapm_add_routes(&card->dapm, &route, 1);
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if (ret)
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL_NS(asoc_sdw_cs_spk_rtd_init, "SND_SOC_SDW_UTILS");
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int asoc_sdw_cs_spk_feedback_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
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{
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const struct snd_soc_dai_link *dai_link = rtd->dai_link;
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const struct snd_soc_dai_link_ch_map *ch_map;
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const struct snd_soc_dai_link_component *codec_dlc;
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struct snd_soc_dai *codec_dai;
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u8 ch_slot[8] = {};
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unsigned int amps_per_bus, ch_per_amp, mask;
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int i, ret;
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WARN_ON(dai_link->num_cpus > ARRAY_SIZE(ch_slot));
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/*
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* CS35L56 has 4 TX channels. When the capture is aggregated the
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* same bus slots will be allocated to all the amps on a bus. Only
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* one amp on that bus can be transmitting in each slot so divide
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* the available 4 slots between all the amps on a bus.
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*/
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amps_per_bus = dai_link->num_codecs / dai_link->num_cpus;
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if ((amps_per_bus == 0) || (amps_per_bus > CS_AMP_CHANNELS_PER_AMP)) {
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dev_err(rtd->card->dev, "Illegal num_codecs:%u / num_cpus:%u\n",
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dai_link->num_codecs, dai_link->num_cpus);
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return -EINVAL;
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}
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ch_per_amp = CS_AMP_CHANNELS_PER_AMP / amps_per_bus;
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for_each_rtd_ch_maps(rtd, i, ch_map) {
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codec_dlc = snd_soc_link_to_codec(rtd->dai_link, i);
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codec_dai = snd_soc_find_dai(codec_dlc);
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mask = GENMASK(ch_per_amp - 1, 0) << ch_slot[ch_map->cpu];
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ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, mask, 4, 32);
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if (ret < 0) {
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dev_err(rtd->card->dev, "Failed to set TDM slot:%d\n", ret);
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return ret;
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}
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ch_slot[ch_map->cpu] += ch_per_amp;
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}
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return 0;
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}
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EXPORT_SYMBOL_NS(asoc_sdw_cs_spk_feedback_rtd_init, "SND_SOC_SDW_UTILS");
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int asoc_sdw_cs_amp_init(struct snd_soc_card *card,
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struct snd_soc_dai_link *dai_links,
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struct asoc_sdw_codec_info *info,
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bool playback)
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{
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/* Do init on playback link only. */
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if (!playback)
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return 0;
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info->amp_num++;
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return 0;
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}
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EXPORT_SYMBOL_NS(asoc_sdw_cs_amp_init, "SND_SOC_SDW_UTILS");
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