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// SPDX-License-Identifier: GPL-2.0
//
// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
// CX2072X codec
//
#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include "../../codecs/cx2072x.h"
#include "../atom/sst-atom-controls.h"
static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Int Mic", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
};
static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
/* External Speakers: HFL, HFR */
{"Headphone", NULL, "PORTA"},
{"Ext Spk", NULL, "PORTG"},
{"PORTC", NULL, "Int Mic"},
{"PORTD", NULL, "Headset Mic"},
{"Playback", NULL, "ssp2 Tx"},
{"ssp2 Tx", NULL, "codec_out0"},
{"ssp2 Tx", NULL, "codec_out1"},
{"codec_in0", NULL, "ssp2 Rx"},
{"codec_in1", NULL, "ssp2 Rx"},
{"ssp2 Rx", NULL, "Capture"},
};
static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphone"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("Int Mic"),
SOC_DAPM_PIN_SWITCH("Ext Spk"),
};
static struct snd_soc_jack byt_cht_cx2072x_headset;
/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
{
.pin = "Headphone",
.mask = SND_JACK_HEADPHONE,
},
};
static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
{ "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
{},
};
static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;
int ret;
if (devm_acpi_dev_add_driver_gpios(codec->dev,
byt_cht_cx2072x_acpi_gpios))
dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");
card->dapm.idle_bias_off = true;
/* set the default PLL rate, the clock is handled by the codec driver */
ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,
19200000, SND_SOC_CLOCK_IN);
if (ret) {
dev_err(rtd->dev, "Could not set sysclk\n");
return ret;
}
ret = snd_soc_card_jack_new(card, "Headset",
SND_JACK_HEADSET | SND_JACK_BTN_0,
&byt_cht_cx2072x_headset,
byt_cht_cx2072x_headset_pins,
ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
if (ret)
return ret;
snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);
snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), 50);
return ret;
}
static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
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);
int ret;
/* The DSP will covert 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 byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
{
return snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE, 48000);
}
static struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
.startup = byt_cht_cx2072x_aif1_startup,
};
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,
DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
SND_SOC_DAILINK_DEF(cx2072x,
DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));
SND_SOC_DAILINK_DEF(platform,
DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
[MERR_DPCM_AUDIO] = {
.name = "Audio Port",
.stream_name = "Audio",
.nonatomic = true,
.dynamic = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &byt_cht_cx2072x_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 = &byt_cht_cx2072x_aif1_ops,
SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
},
/* 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,
.init = byt_cht_cx2072x_init,
.be_hw_params_fixup = byt_cht_cx2072x_fixup,
.nonatomic = true,
.dpcm_playback = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
},
};
/* SoC card */
static struct snd_soc_card byt_cht_cx2072x_card = {
.name = "bytcht-cx2072x",
.owner = THIS_MODULE,
.dai_link = byt_cht_cx2072x_dais,
.num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
.dapm_widgets = byt_cht_cx2072x_widgets,
.num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
.dapm_routes = byt_cht_cx2072x_audio_map,
.num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
.controls = byt_cht_cx2072x_controls,
.num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
};
static char codec_name[SND_ACPI_I2C_ID_LEN];
static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
{
struct snd_soc_acpi_mach *mach;
struct acpi_device *adev;
int dai_index = 0;
int i, ret;
byt_cht_cx2072x_card.dev = &pdev->dev;
mach = dev_get_platdata(&pdev->dev);
/* fix index of codec dai */
for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
"i2c-14F10720:00")) {
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);
byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
}
/* override plaform name, if required */
ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
mach->mach_params.platform);
if (ret)
return ret;
return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
}
static struct platform_driver snd_byt_cht_cx2072x_driver = {
.driver = {
.name = "bytcht_cx2072x",
},
.probe = snd_byt_cht_cx2072x_probe,
};
module_platform_driver(snd_byt_cht_cx2072x_driver);
MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:bytcht_cx2072x");
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