/*
* cht-bsw-max98090.c - ASoc Machine driver for Intel Cherryview-based
* platforms Cherrytrail and Braswell, with max98090 & TI codec.
*
* Copyright (C) 2015 Intel Corp
* Author: Fang, Yang A <yang.a.fang@intel.com>
* This file is modified from cht_bsw_rt5645.c
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/clk.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "../../codecs/max98090.h"
#include "../atom/sst-atom-controls.h"
#include "../../codecs/ts3a227e.h"
#define CHT_PLAT_CLK_3_HZ 19200000
#define CHT_CODEC_DAI "HiFi"
struct cht_mc_private {
struct clk *mclk;
struct snd_soc_jack jack;
bool ts3a227e_present;
};
static int platform_clock_control(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_dapm_context *dapm = w->dapm;
struct snd_soc_card *card = dapm->card;
struct snd_soc_dai *codec_dai;
struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
int ret;
codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
if (!codec_dai) {
dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
return -EIO;
}
if (SND_SOC_DAPM_EVENT_ON(event)) {
ret = clk_prepare_enable(ctx->mclk);
if (ret < 0) {
dev_err(card->dev,
"could not configure MCLK state");
return ret;
}
} else {
clk_disable_unprepare(ctx->mclk);
}
return 0;
}
static const struct snd_soc_dapm_widget cht_dapm_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),
SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
platform_clock_control, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
};
static const struct snd_soc_dapm_route cht_audio_map[] = {
{"IN34", NULL, "Headset Mic"},
{"Headset Mic", NULL, "MICBIAS"},
{"DMICL", NULL, "Int Mic"},
{"Headphone", NULL, "HPL"},
{"Headphone", NULL, "HPR"},
{"Ext Spk", NULL, "SPKL"},
{"Ext Spk", NULL, "SPKR"},
{"HiFi 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, "HiFi Capture"},
{"Headphone", NULL, "Platform Clock"},
{"Headset Mic", NULL, "Platform Clock"},
{"Int Mic", NULL, "Platform Clock"},
{"Ext Spk", NULL, "Platform Clock"},
};
static const struct snd_kcontrol_new cht_mc_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 int cht_aif1_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
int ret;
ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
return ret;
}
return 0;
}
static int cht_ti_jack_event(struct notifier_block *nb,
unsigned long event, void *data)
{
struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
struct snd_soc_dapm_context *dapm = &jack->card->dapm;
if (event & SND_JACK_MICROPHONE) {
snd_soc_dapm_force_enable_pin(dapm, "SHDN");
snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
snd_soc_dapm_sync(dapm);
} else {
snd_soc_dapm_disable_pin(dapm, "MICBIAS");
snd_soc_dapm_disable_pin(dapm, "SHDN");
snd_soc_dapm_sync(dapm);
}
return 0;
}
static struct notifier_block cht_jack_nb = {
.notifier_call = cht_ti_jack_event,
};
static struct snd_soc_jack_pin hs_jack_pins[] = {
{
.pin = "Headphone",
.mask = SND_JACK_HEADPHONE,
},
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
};
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
{
.name = "hp",
.report = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
.debounce_time = 200,
},
{
.name = "mic",
.invert = 1,
.report = SND_JACK_MICROPHONE,
.debounce_time = 200,
},
};
static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
static const struct acpi_gpio_mapping acpi_max98090_gpios[] = {
{ "hp-gpios", &hp_gpios, 1 },
{ "mic-gpios", &mic_gpios, 1 },
{},
};
static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
{
int ret;
int jack_type;
struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
struct snd_soc_jack *jack = &ctx->jack;
if (ctx->ts3a227e_present) {
/*
* The jack has already been created in the
* cht_max98090_headset_init() function.
*/
snd_soc_jack_notifier_register(jack, &cht_jack_nb);
return 0;
}
jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
jack_type, jack,
hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
if (ret) {
dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
return ret;
}
ret = snd_soc_jack_add_gpiods(runtime->card->dev->parent, jack,
ARRAY_SIZE(hs_jack_gpios),
hs_jack_gpios);
if (ret) {
/*
* flag error but don't bail if jack detect is broken
* due to platform issues or bad BIOS/configuration
*/
dev_err(runtime->dev,
"jack detection gpios not added, error %d\n", ret);
}
/*
* The firmware might enable the clock at
* boot (this information may or may not
* be reflected in the enable clock register).
* To change the rate we must disable the clock
* first to cover these cases. Due to common
* clock framework restrictions that do not allow
* to disable a clock that has not been enabled,
* we need to enable the clock first.
*/
ret = clk_prepare_enable(ctx->mclk);
if (!ret)
clk_disable_unprepare(ctx->mclk);
ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
if (ret)
dev_err(runtime->dev, "unable to set MCLK rate\n");
return ret;
}
static int cht_codec_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 = 0;
unsigned int fmt = 0;
ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
if (ret < 0) {
dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
return ret;
}
fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS;
ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
if (ret < 0) {
dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
return 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);
return 0;
}
static int cht_aif1_startup(struct snd_pcm_substream *substream)
{
return snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE, 48000);
}
static int cht_max98090_headset_init(struct snd_soc_component *component)
{
struct snd_soc_card *card = component->card;
struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
struct snd_soc_jack *jack = &ctx->jack;
int jack_type;
int ret;
/*
* TI supports 4 butons headset detection
* KEY_MEDIA
* KEY_VOICECOMMAND
* KEY_VOLUMEUP
* KEY_VOLUMEDOWN
*/
jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3;
ret = snd_soc_card_jack_new(card, "Headset Jack", jack_type,
jack, NULL, 0);
if (ret) {
dev_err(card->dev, "Headset Jack creation failed %d\n", ret);
return ret;
}
return ts3a227e_enable_jack_detect(component, jack);
}
static const struct snd_soc_ops cht_aif1_ops = {
.startup = cht_aif1_startup,
};
static const struct snd_soc_ops cht_be_ssp2_ops = {
.hw_params = cht_aif1_hw_params,
};
static struct snd_soc_aux_dev cht_max98090_headset_dev = {
.name = "Headset Chip",
.init = cht_max98090_headset_init,
.codec_name = "i2c-104C227E:00",
};
static struct snd_soc_dai_link cht_dailink[] = {
[MERR_DPCM_AUDIO] = {
.name = "Audio Port",
.stream_name = "Audio",
.cpu_dai_name = "media-cpu-dai",
.codec_dai_name = "snd-soc-dummy-dai",
.codec_name = "snd-soc-dummy",
.platform_name = "sst-mfld-platform",
.nonatomic = true,
.dynamic = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &cht_aif1_ops,
},
[MERR_DPCM_DEEP_BUFFER] = {
.name = "Deep-Buffer Audio Port",
.stream_name = "Deep-Buffer Audio",
.cpu_dai_name = "deepbuffer-cpu-dai",
.codec_dai_name = "snd-soc-dummy-dai",
.codec_name = "snd-soc-dummy",
.platform_name = "sst-mfld-platform",
.nonatomic = true,
.dynamic = 1,
.dpcm_playback = 1,
.ops = &cht_aif1_ops,
},
[MERR_DPCM_COMPR] = {
.name = "Compressed Port",
.stream_name = "Compress",
.cpu_dai_name = "compress-cpu-dai",
.codec_dai_name = "snd-soc-dummy-dai",
.codec_name = "snd-soc-dummy",
.platform_name = "sst-mfld-platform",
},
/* back ends */
{
.name = "SSP2-Codec",
.id = 1,
.cpu_dai_name = "ssp2-port",
.platform_name = "sst-mfld-platform",
.no_pcm = 1,
.codec_dai_name = "HiFi",
.codec_name = "i2c-193C9890:00",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS,
.init = cht_codec_init,
.be_hw_params_fixup = cht_codec_fixup,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &cht_be_ssp2_ops,
},
};
/* SoC card */
static struct snd_soc_card snd_soc_card_cht = {
.name = "chtmax98090",
.owner = THIS_MODULE,
.dai_link = cht_dailink,
.num_links = ARRAY_SIZE(cht_dailink),
.aux_dev = &cht_max98090_headset_dev,
.num_aux_devs = 1,
.dapm_widgets = cht_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
.dapm_routes = cht_audio_map,
.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
.controls = cht_mc_controls,
.num_controls = ARRAY_SIZE(cht_mc_controls),
};
static int snd_cht_mc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int ret_val = 0;
struct cht_mc_private *drv;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
if (!drv)
return -ENOMEM;
drv->ts3a227e_present = acpi_dev_found("104C227E");
if (!drv->ts3a227e_present) {
/* no need probe TI jack detection chip */
snd_soc_card_cht.aux_dev = NULL;
snd_soc_card_cht.num_aux_devs = 0;
ret_val = devm_acpi_dev_add_driver_gpios(dev->parent,
acpi_max98090_gpios);
if (ret_val)
dev_dbg(dev, "Unable to add GPIO mapping table\n");
}
/* register the soc card */
snd_soc_card_cht.dev = &pdev->dev;
snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
if (IS_ERR(drv->mclk)) {
dev_err(&pdev->dev,
"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
PTR_ERR(drv->mclk));
return PTR_ERR(drv->mclk);
}
ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
if (ret_val) {
dev_err(&pdev->dev,
"snd_soc_register_card failed %d\n", ret_val);
return ret_val;
}
platform_set_drvdata(pdev, &snd_soc_card_cht);
return ret_val;
}
static struct platform_driver snd_cht_mc_driver = {
.driver = {
.name = "cht-bsw-max98090",
},
.probe = snd_cht_mc_probe,
};
module_platform_driver(snd_cht_mc_driver)
MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:cht-bsw-max98090");
