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// SPDX-License-Identifier: GPL-2.0-only
/*
* 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
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/dmi.h>
#include <linux/gpio/consumer.h>
#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/soc-acpi.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"
#define QUIRK_PMC_PLT_CLK_0 0x01
struct cht_mc_private {
struct clk *mclk;
struct snd_soc_jack jack;
bool ts3a227e_present;
int quirks;
};
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;
/* See the comment in snd_cht_mc_probe() */
if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
return 0;
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);
}
/* See the comment in snd_cht_mc_probe() */
if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
return 0;
/*
* 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);
|