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// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
//
// ALSA SoC Machine driver for sc7280
#include <linux/input.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/soundwire/sdw.h>
#include "common.h"
#include "lpass.h"
struct sc7280_snd_data {
struct snd_soc_card card;
struct sdw_stream_runtime *sruntime[LPASS_MAX_PORTS];
struct snd_soc_jack hs_jack;
struct snd_soc_jack hdmi_jack;
bool jack_setup;
bool stream_prepared[LPASS_MAX_PORTS];
};
static void sc7280_jack_free(struct snd_jack *jack)
{
struct snd_soc_component *component = jack->private_data;
snd_soc_component_set_jack(component, NULL, NULL);
}
static int sc7280_headset_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
struct snd_jack *jack;
int rval, i;
if (!pdata->jack_setup) {
rval = snd_soc_card_jack_new(card, "Headset Jack",
SND_JACK_HEADSET | SND_JACK_LINEOUT |
SND_JACK_MECHANICAL |
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3 |
SND_JACK_BTN_4 | SND_JACK_BTN_5,
&pdata->hs_jack, NULL, 0);
if (rval < 0) {
dev_err(card->dev, "Unable to add Headset Jack\n");
return rval;
}
jack = pdata->hs_jack.jack;
snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
jack->private_data = component;
jack->private_free = sc7280_jack_free;
pdata->jack_setup = true;
}
switch (cpu_dai->id) {
case LPASS_CDC_DMA_RX0:
case LPASS_CDC_DMA_TX3:
for_each_rtd_codec_dais(rtd, i, codec_dai) {
rval = snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
if (rval != 0 && rval != -ENOTSUPP) {
dev_err(card->dev, "Failed to set jack: %d\n", rval);
return rval;
}
}
break;
default:
break;
}
return 0;
}
static int sc7280_hdmi_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
struct snd_jack *jack;
int rval;
rval = snd_soc_card_jack_new(card, "HDMI Jack", SND_JACK_LINEOUT,
&pdata->hdmi_jack, NULL, 0);
if (rval < 0) {
dev_err(card->dev, "Unable to add HDMI Jack\n");
return rval;
}
jack = pdata->hdmi_jack.jack;
jack->private_data = component;
jack->private_free = sc7280_jack_free;
return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
}
static int sc7280_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
switch (cpu_dai->id) {
case LPASS_CDC_DMA_TX3:
return sc7280_headset_init(rtd);
case LPASS_CDC_DMA_RX0:
case LPASS_CDC_DMA_VA_TX0:
case MI2S_SECONDARY:
return 0;
case LPASS_DP_RX:
return sc7280_hdmi_init(rtd);
default:
dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
}
return -EINVAL;
}
static int sc7280_snd_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai;
const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
struct sdw_stream_runtime *sruntime;
int i;
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, 48000, 48000);
switch (cpu_dai->id) {
case LPASS_CDC_DMA_TX3:
case LPASS_CDC_DMA_RX0:
for_each_rtd_codec_dais(rtd, i, codec_dai) {
sruntime = snd_soc_dai_get_stream(codec_dai, substream->stream);
if (sruntime != ERR_PTR(-ENOTSUPP))
pdata->sruntime[cpu_dai->id] = sruntime;
}
break;
}
return 0;
}
static int sc7280_snd_swr_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
int ret;
if (!sruntime)
return 0;
if (data->stream_prepared[cpu_dai->id]) {
sdw_disable_stream(sruntime);
sdw_deprepare_stream(sruntime);
data->stream_prepared[cpu_dai->id] = false;
}
ret = sdw_prepare_stream(sruntime);
if (ret)
return ret;
ret = sdw_enable_stream(sruntime);
if (ret) {
sdw_deprepare_stream(sruntime);
return ret;
}
data->stream_prepared[cpu_dai->id] = true;
return ret;
}
static int sc7280_snd_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
switch (cpu_dai->id) {
case LPASS_CDC_DMA_RX0:
case LPASS_CDC_DMA_TX3:
return sc7280_snd_swr_prepare(substream);
default:
break;
}
return 0;
}
static int sc7280_snd_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
const struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
switch (cpu_dai->id) {
case LPASS_CDC_DMA_RX0:
case LPASS_CDC_DMA_TX3:
if (sruntime && data->stream_prepared[cpu_dai->id]) {
sdw_disable_stream(sruntime);
sdw_deprepare_stream(sruntime);
data->stream_prepared[cpu_dai->id] = false;
}
break;
default:
break;
}
return 0;
}
static const struct snd_soc_ops sc7280_ops = {
.hw_params = sc7280_snd_hw_params,
.hw_free = sc7280_snd_hw_free,
.prepare = sc7280_snd_prepare,
};
static int sc7280_snd_platform_probe(struct platform_device *pdev)
{
struct snd_soc_card *card;
struct sc7280_snd_data *data;
struct device *dev = &pdev->dev;
struct snd_soc_dai_link *link;
int ret, i;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
card = &data->card;
snd_soc_card_set_drvdata(card, data);
card->owner = THIS_MODULE;
card->driver_name = "SC7280";
card->dev = dev;
ret = qcom_snd_parse_of(card);
if (ret)
return ret;
for_each_card_prelinks(card, i, link) {
link->init = sc7280_init;
link->ops = &sc7280_ops;
}
return devm_snd_soc_register_card(dev, card);
}
static const struct of_device_id sc7280_snd_device_id[] = {
{ .compatible = "google,sc7280-herobrine" },
{}
};
MODULE_DEVICE_TABLE(of, sc7280_snd_device_id);
static struct platform_driver sc7280_snd_driver = {
.probe = sc7280_snd_platform_probe,
.driver = {
.name = "msm-snd-sc7280",
.of_match_table = sc7280_snd_device_id,
.pm = &snd_soc_pm_ops,
},
};
module_platform_driver(sc7280_snd_driver);
MODULE_DESCRIPTION("sc7280 ASoC Machine Driver");
MODULE_LICENSE("GPL");
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