Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  bytcht-da7213.c - ASoc Machine driver for Intel Baytrail and
 *             Cherrytrail-based platforms, with Dialog DA7213 codec
 *
 *  Copyright (C) 2017 Intel Corporation
 *  Author: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
 *
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
 
#include <linux/module.h>
#include <linux/acpi.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include "../../codecs/da7213.h"
#include "../atom/sst-atom-controls.h"
 
static const struct snd_kcontrol_new controls[] = {
<------>SOC_DAPM_PIN_SWITCH("Headphone Jack"),
<------>SOC_DAPM_PIN_SWITCH("Headset Mic"),
<------>SOC_DAPM_PIN_SWITCH("Mic"),
<------>SOC_DAPM_PIN_SWITCH("Aux In"),
};
 
static const struct snd_soc_dapm_widget dapm_widgets[] = {
<------>SND_SOC_DAPM_HP("Headphone Jack", NULL),
<------>SND_SOC_DAPM_MIC("Headset Mic", NULL),
<------>SND_SOC_DAPM_MIC("Mic", NULL),
<------>SND_SOC_DAPM_LINE("Aux In", NULL),
};
 
static const struct snd_soc_dapm_route audio_map[] = {
<------>{"Headphone Jack", NULL, "HPL"},
<------>{"Headphone Jack", NULL, "HPR"},
 
<------>{"AUXL", NULL, "Aux In"},
<------>{"AUXR", NULL, "Aux In"},
 
<------>/* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
<------>{"MIC1", NULL, "Headset Mic"},
<------>{"MIC2", NULL, "Mic"},
 
<------>/* SOC-codec link */
<------>{"ssp2 Tx", NULL, "codec_out0"},
<------>{"ssp2 Tx", NULL, "codec_out1"},
<------>{"codec_in0", NULL, "ssp2 Rx"},
<------>{"codec_in1", NULL, "ssp2 Rx"},
 
<------>{"Playback", NULL, "ssp2 Tx"},
<------>{"ssp2 Rx", NULL, "Capture"},
};
 
static int codec_fixup(struct snd_soc_pcm_runtime *rtd,
<------><------>       struct snd_pcm_hw_params *params)
{
<------>int ret;
<------>struct snd_interval *rate = hw_param_interval(params,
<------><------><------>SNDRV_PCM_HW_PARAM_RATE);
<------>struct snd_interval *channels = hw_param_interval(params,
<------><------><------><------><------><------>SNDRV_PCM_HW_PARAM_CHANNELS);
 
<------>/* The DSP will convert the FE rate to 48k, stereo, 24bits */
<------>rate->min = rate->max = 48000;
<------>channels->min = channels->max = 2;
 
<------>/* set SSP2 to 24-bit */
<------>params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 
<------>/*
<------> * Default mode for SSP configuration is TDM 4 slot, override config
<------> * with explicit setting to I2S 2ch 24-bit. The word length is set with
<------> * dai_set_tdm_slot() since there is no other API exposed
<------> */
<------>ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
<------><------><------><------>  SND_SOC_DAIFMT_I2S     |
<------><------><------><------>  SND_SOC_DAIFMT_NB_NF   |
<------><------><------><------>  SND_SOC_DAIFMT_CBS_CFS);
<------>if (ret < 0) {
<------><------>dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
<------><------>return ret;
<------>}
 
<------>ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
<------>if (ret < 0) {
<------><------>dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
<------><------>return ret;
<------>}
 
<------>return 0;
}
 
static int aif1_startup(struct snd_pcm_substream *substream)
{
<------>return snd_pcm_hw_constraint_single(substream->runtime,
<------><------><------>SNDRV_PCM_HW_PARAM_RATE, 48000);
}
 
static int aif1_hw_params(struct snd_pcm_substream *substream,
<------><------><------>  struct snd_pcm_hw_params *params)
{
<------>struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
<------>struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
<------>int ret;
 
<------>ret = snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK,
<------><------><------><------>     19200000, SND_SOC_CLOCK_IN);
<------>if (ret < 0)
<------><------>dev_err(codec_dai->dev, "can't set codec sysclk configuration\n");
 
<------>ret = snd_soc_dai_set_pll(codec_dai, 0,
<------><------><------>DA7213_SYSCLK_PLL_SRM, 0, DA7213_PLL_FREQ_OUT_98304000);
<------>if (ret < 0) {
<------><------>dev_err(codec_dai->dev, "failed to start PLL: %d\n", ret);
<------><------>return -EIO;
<------>}
 
<------>return ret;
}
 
static int aif1_hw_free(struct snd_pcm_substream *substream)
{
<------>struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
<------>struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
<------>int ret;
 
<------>ret = snd_soc_dai_set_pll(codec_dai, 0,
<------><------><------><------>  DA7213_SYSCLK_MCLK, 0, 0);
<------>if (ret < 0) {
<------><------>dev_err(codec_dai->dev, "failed to stop PLL: %d\n", ret);
<------><------>return -EIO;
<------>}
 
<------>return ret;
}
 
static const struct snd_soc_ops aif1_ops = {
<------>.startup = aif1_startup,
};
 
static const struct snd_soc_ops ssp2_ops = {
<------>.hw_params = aif1_hw_params,
<------>.hw_free = aif1_hw_free,
 
};
 
SND_SOC_DAILINK_DEF(dummy,
<------>DAILINK_COMP_ARRAY(COMP_DUMMY()));
 
SND_SOC_DAILINK_DEF(media,
<------>DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
 
SND_SOC_DAILINK_DEF(deepbuffer,
<------>DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
 
SND_SOC_DAILINK_DEF(ssp2_port,
<------>DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
SND_SOC_DAILINK_DEF(ssp2_codec,
<------>DAILINK_COMP_ARRAY(COMP_CODEC("i2c-DLGS7213:00",
<------><------><------><------>      "da7213-hifi")));
 
SND_SOC_DAILINK_DEF(platform,
<------>DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
 
static struct snd_soc_dai_link dailink[] = {
<------>[MERR_DPCM_AUDIO] = {
<------><------>.name = "Audio Port",
<------><------>.stream_name = "Audio",
<------><------>.nonatomic = true,
<------><------>.dynamic = 1,
<------><------>.dpcm_playback = 1,
<------><------>.dpcm_capture = 1,
<------><------>.ops = &aif1_ops,
<------><------>SND_SOC_DAILINK_REG(media, dummy, platform),
<------>},
<------>[MERR_DPCM_DEEP_BUFFER] = {
<------><------>.name = "Deep-Buffer Audio Port",
<------><------>.stream_name = "Deep-Buffer Audio",
<------><------>.nonatomic = true,
<------><------>.dynamic = 1,
<------><------>.dpcm_playback = 1,
<------><------>.ops = &aif1_ops,
<------><------>SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
<------>},
<------>/* CODEC<->CODEC link */
<------>/* back ends */
<------>{
<------><------>.name = "SSP2-Codec",
<------><------>.id = 0,
<------><------>.no_pcm = 1,
<------><------>.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
<------><------><------><------><------><------>| SND_SOC_DAIFMT_CBS_CFS,
<------><------>.be_hw_params_fixup = codec_fixup,
<------><------>.nonatomic = true,
<------><------>.dpcm_playback = 1,
<------><------>.dpcm_capture = 1,
<------><------>.ops = &ssp2_ops,
<------><------>SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
<------>},
};
 
#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
/* use space before codec name to simplify card ID, and simplify driver name */
#define CARD_NAME "bytcht da7213" /* card name will be 'sof-bytcht da7213' */
#define DRIVER_NAME "SOF"
#else
#define CARD_NAME "bytcht-da7213"
#define DRIVER_NAME NULL /* card name will be used for driver name */
#endif
 
/* SoC card */
static struct snd_soc_card bytcht_da7213_card = {
<------>.name = CARD_NAME,
<------>.driver_name = DRIVER_NAME,
<------>.owner = THIS_MODULE,
<------>.dai_link = dailink,
<------>.num_links = ARRAY_SIZE(dailink),
<------>.controls = controls,
<------>.num_controls = ARRAY_SIZE(controls),
<------>.dapm_widgets = dapm_widgets,
<------>.num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
<------>.dapm_routes = audio_map,
<------>.num_dapm_routes = ARRAY_SIZE(audio_map),
};
 
static char codec_name[SND_ACPI_I2C_ID_LEN];
 
static int bytcht_da7213_probe(struct platform_device *pdev)
{
<------>struct snd_soc_card *card;
<------>struct snd_soc_acpi_mach *mach;
<------>const char *platform_name;
<------>struct acpi_device *adev;
<------>int dai_index = 0;
<------>int ret_val = 0;
<------>int i;
 
<------>mach = pdev->dev.platform_data;
<------>card = &bytcht_da7213_card;
<------>card->dev = &pdev->dev;
 
<------>/* fix index of codec dai */
<------>for (i = 0; i < ARRAY_SIZE(dailink); i++) {
<------><------>if (!strcmp(dailink[i].codecs->name, "i2c-DLGS7213:00")) {
<------><------><------>dai_index = i;
<------><------><------>break;
<------><------>}
<------>}
 
<------>/* fixup codec name based on HID */
<------>adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
<------>if (adev) {
<------><------>snprintf(codec_name, sizeof(codec_name),
<------><------><------> "i2c-%s", acpi_dev_name(adev));
<------><------>put_device(&adev->dev);
<------><------>dailink[dai_index].codecs->name = codec_name;
<------>}
 
<------>/* override plaform name, if required */
<------>platform_name = mach->mach_params.platform;
 
<------>ret_val = snd_soc_fixup_dai_links_platform_name(card, platform_name);
<------>if (ret_val)
<------><------>return ret_val;
 
<------>ret_val = devm_snd_soc_register_card(&pdev->dev, card);
<------>if (ret_val) {
<------><------>dev_err(&pdev->dev,
<------><------><------>"snd_soc_register_card failed %d\n", ret_val);
<------><------>return ret_val;
<------>}
<------>platform_set_drvdata(pdev, card);
<------>return ret_val;
}
 
static struct platform_driver bytcht_da7213_driver = {
<------>.driver = {
<------><------>.name = "bytcht_da7213",
#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
<------><------>.pm = &snd_soc_pm_ops,
#endif
<------>},
<------>.probe = bytcht_da7213_probe,
};
module_platform_driver(bytcht_da7213_driver);
 
MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail+DA7213 Machine driver");
MODULE_AUTHOR("Pierre-Louis Bossart");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:bytcht_da7213");