178 lines
4.9 KiB
C
178 lines
4.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2022, Linaro Limited
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/of_device.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/pcm.h>
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#include <linux/soundwire/sdw.h>
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#include <sound/jack.h>
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#include <linux/input-event-codes.h>
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#include "qdsp6/q6afe.h"
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#include "common.h"
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#include "sdw.h"
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#define DRIVER_NAME "sc8280xp"
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struct sc8280xp_snd_data {
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bool stream_prepared[AFE_PORT_MAX];
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struct snd_soc_card *card;
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struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
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struct snd_soc_jack jack;
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bool jack_setup;
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};
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static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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struct snd_soc_card *card = rtd->card;
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switch (cpu_dai->id) {
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case WSA_CODEC_DMA_RX_0:
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case WSA_CODEC_DMA_RX_1:
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/*
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* Set limit of -3 dB on Digital Volume and 0 dB on PA Volume
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* to reduce the risk of speaker damage until we have active
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* speaker protection in place.
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*/
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snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 81);
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snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 81);
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snd_soc_limit_volume(card, "SpkrLeft PA Volume", 17);
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snd_soc_limit_volume(card, "SpkrRight PA Volume", 17);
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break;
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default:
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break;
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}
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return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
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}
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static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct snd_interval *rate = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_CHANNELS);
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rate->min = rate->max = 48000;
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channels->min = 2;
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channels->max = 2;
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switch (cpu_dai->id) {
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case TX_CODEC_DMA_TX_0:
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case TX_CODEC_DMA_TX_1:
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case TX_CODEC_DMA_TX_2:
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case TX_CODEC_DMA_TX_3:
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channels->min = 1;
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break;
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default:
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break;
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}
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return 0;
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}
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static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
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return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
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}
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static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
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struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
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return qcom_snd_sdw_prepare(substream, sruntime,
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&data->stream_prepared[cpu_dai->id]);
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}
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static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
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return qcom_snd_sdw_hw_free(substream, sruntime,
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&data->stream_prepared[cpu_dai->id]);
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}
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static const struct snd_soc_ops sc8280xp_be_ops = {
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.hw_params = sc8280xp_snd_hw_params,
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.hw_free = sc8280xp_snd_hw_free,
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.prepare = sc8280xp_snd_prepare,
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};
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static void sc8280xp_add_be_ops(struct snd_soc_card *card)
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{
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struct snd_soc_dai_link *link;
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int i;
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for_each_card_prelinks(card, i, link) {
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if (link->no_pcm == 1) {
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link->init = sc8280xp_snd_init;
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link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
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link->ops = &sc8280xp_be_ops;
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}
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}
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}
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static int sc8280xp_platform_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card;
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struct sc8280xp_snd_data *data;
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struct device *dev = &pdev->dev;
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int ret;
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card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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card->owner = THIS_MODULE;
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/* Allocate the private data */
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data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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card->dev = dev;
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dev_set_drvdata(dev, card);
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snd_soc_card_set_drvdata(card, data);
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ret = qcom_snd_parse_of(card);
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if (ret)
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return ret;
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card->driver_name = DRIVER_NAME;
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sc8280xp_add_be_ops(card);
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return devm_snd_soc_register_card(dev, card);
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}
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static const struct of_device_id snd_sc8280xp_dt_match[] = {
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{.compatible = "qcom,sc8280xp-sndcard",},
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{}
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};
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MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
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static struct platform_driver snd_sc8280xp_driver = {
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.probe = sc8280xp_platform_probe,
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.driver = {
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.name = "snd-sc8280xp",
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.of_match_table = snd_sc8280xp_dt_match,
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},
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};
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module_platform_driver(snd_sc8280xp_driver);
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MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
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MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
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MODULE_LICENSE("GPL v2");
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