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linux-zen-desktop/sound/soc/intel/boards/bytcr_wm5102.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* bytcr_wm5102.c - ASoc Machine driver for Intel Baytrail platforms with a
* Wolfson Microelectronics WM5102 codec
*
* Copyright (C) 2020 Hans de Goede <hdegoede@redhat.com>
* Loosely based on bytcr_rt5640.c which is:
* Copyright (C) 2014-2020 Intel Corp
* Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
*/
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include "../../codecs/wm5102.h"
#include "../atom/sst-atom-controls.h"
#define MCLK_FREQ 25000000
#define WM5102_MAX_SYSCLK_4K 49152000 /* max sysclk for 4K family */
#define WM5102_MAX_SYSCLK_11025 45158400 /* max sysclk for 11.025K family */
struct byt_wm5102_private {
struct snd_soc_jack jack;
struct clk *mclk;
struct gpio_desc *spkvdd_en_gpio;
};
static int byt_wm5102_spkvdd_power_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_card *card = w->dapm->card;
struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
gpiod_set_value_cansleep(priv->spkvdd_en_gpio,
!!SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static int byt_wm5102_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai, int rate)
{
struct snd_soc_component *codec_component = codec_dai->component;
int sr_mult = ((rate % 4000) == 0) ?
(WM5102_MAX_SYSCLK_4K / rate) :
(WM5102_MAX_SYSCLK_11025 / rate);
int ret;
/* Reset FLL1 */
snd_soc_dai_set_pll(codec_dai, WM5102_FLL1_REFCLK, ARIZONA_FLL_SRC_NONE, 0, 0);
snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0);
/* Configure the FLL1 PLL before selecting it */
ret = snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_CLK_SRC_MCLK1,
MCLK_FREQ, rate * sr_mult);
if (ret) {
dev_err(codec_component->dev, "Error setting PLL: %d\n", ret);
return ret;
}
ret = snd_soc_component_set_sysclk(codec_component, ARIZONA_CLK_SYSCLK,
ARIZONA_CLK_SRC_FLL1, rate * sr_mult,
SND_SOC_CLOCK_IN);
if (ret) {
dev_err(codec_component->dev, "Error setting SYSCLK: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK,
rate * 512, SND_SOC_CLOCK_IN);
if (ret) {
dev_err(codec_component->dev, "Error setting clock: %d\n", ret);
return ret;
}
return 0;
}
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 byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
int ret;
codec_dai = snd_soc_card_get_codec_dai(card, "wm5102-aif1");
if (!codec_dai) {
dev_err(card->dev, "Error codec DAI not found\n");
return -EIO;
}
if (SND_SOC_DAPM_EVENT_ON(event)) {
ret = clk_prepare_enable(priv->mclk);
if (ret) {
dev_err(card->dev, "Error enabling MCLK: %d\n", ret);
return ret;
}
ret = byt_wm5102_prepare_and_enable_pll1(codec_dai, 48000);
if (ret) {
dev_err(card->dev, "Error setting codec sysclk: %d\n", ret);
return ret;
}
} else {
/*
* The WM5102 has a separate 32KHz clock for jack-detect
* so we can disable the PLL, followed by disabling the
* platform clock which is the source-clock for the PLL.
*/
snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0);
clk_disable_unprepare(priv->mclk);
}
return 0;
}
static const struct snd_soc_dapm_widget byt_wm5102_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Internal Mic", NULL),
SND_SOC_DAPM_SPK("Speaker", 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),
SND_SOC_DAPM_SUPPLY("Speaker VDD", SND_SOC_NOPM, 0, 0,
byt_wm5102_spkvdd_power_event,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
};
static const struct snd_soc_dapm_route byt_wm5102_audio_map[] = {
{"Headphone", NULL, "Platform Clock"},
{"Headset Mic", NULL, "Platform Clock"},
{"Internal Mic", NULL, "Platform Clock"},
{"Speaker", NULL, "Platform Clock"},
{"Speaker", NULL, "SPKOUTLP"},
{"Speaker", NULL, "SPKOUTLN"},
{"Speaker", NULL, "SPKOUTRP"},
{"Speaker", NULL, "SPKOUTRN"},
{"Speaker", NULL, "Speaker VDD"},
{"Headphone", NULL, "HPOUT1L"},
{"Headphone", NULL, "HPOUT1R"},
{"Internal Mic", NULL, "MICBIAS3"},
{"IN3L", NULL, "Internal Mic"},
/*
* The Headset Mix uses MICBIAS1 or 2 depending on if a CTIA/OMTP Headset
* is connected, as the MICBIAS is applied after the CTIA/OMTP cross-switch.
*/
{"Headset Mic", NULL, "MICBIAS1"},
{"Headset Mic", NULL, "MICBIAS2"},
{"IN1L", NULL, "Headset Mic"},
{"AIF1 Playback", NULL, "ssp0 Tx"},
{"ssp0 Tx", NULL, "modem_out"},
{"modem_in", NULL, "ssp0 Rx"},
{"ssp0 Rx", NULL, "AIF1 Capture"},
};
static const struct snd_kcontrol_new byt_wm5102_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphone"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("Internal Mic"),
SOC_DAPM_PIN_SWITCH("Speaker"),
};
static struct snd_soc_jack_pin byt_wm5102_pins[] = {
{
.pin = "Headphone",
.mask = SND_JACK_HEADPHONE,
},
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
};
static int byt_wm5102_init(struct snd_soc_pcm_runtime *runtime)
{
struct snd_soc_card *card = runtime->card;
struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component;
int ret, jack_type;
card->dapm.idle_bias_off = true;
ret = snd_soc_add_card_controls(card, byt_wm5102_controls,
ARRAY_SIZE(byt_wm5102_controls));
if (ret) {
dev_err(card->dev, "Error adding card controls: %d\n", ret);
return 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(priv->mclk);
if (!ret)
clk_disable_unprepare(priv->mclk);
ret = clk_set_rate(priv->mclk, MCLK_FREQ);
if (ret) {
dev_err(card->dev, "Error setting MCLK rate: %d\n", ret);
return ret;
}
jack_type = ARIZONA_JACK_MASK | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
SND_JACK_BTN_2 | SND_JACK_BTN_3;
ret = snd_soc_card_jack_new_pins(card, "Headset", jack_type,
&priv->jack, byt_wm5102_pins,
ARRAY_SIZE(byt_wm5102_pins));
if (ret) {
dev_err(card->dev, "Error creating jack: %d\n", ret);
return ret;
}
snd_soc_component_set_jack(component, &priv->jack, NULL);
return 0;
}
static int byt_wm5102_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;
/* The DSP will convert the FE rate to 48k, stereo */
rate->min = 48000;
rate->max = 48000;
channels->min = 2;
channels->max = 2;
/* set SSP0 to 16-bit */
params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
/*
* Default mode for SSP configuration is TDM 4 slot, override config
* with explicit setting to I2S 2ch 16-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_BP_FP);
if (ret) {
dev_err(rtd->dev, "Error setting format to I2S: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 16);
if (ret) {
dev_err(rtd->dev, "Error setting I2S config: %d\n", ret);
return ret;
}
return 0;
}
static int byt_wm5102_aif1_startup(struct snd_pcm_substream *substream)
{
return snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE, 48000);
}
static const struct snd_soc_ops byt_wm5102_aif1_ops = {
.startup = byt_wm5102_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(ssp0_port,
DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
SND_SOC_DAILINK_DEF(ssp0_codec,
DAILINK_COMP_ARRAY(COMP_CODEC(
/*
* Note there is no need to overwrite the codec-name as is done in
* other bytcr machine drivers, because the codec is a MFD child-dev.
*/
"wm5102-codec",
"wm5102-aif1")));
SND_SOC_DAILINK_DEF(platform,
DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
static struct snd_soc_dai_link byt_wm5102_dais[] = {
[MERR_DPCM_AUDIO] = {
.name = "Baytrail Audio Port",
.stream_name = "Baytrail Audio",
.nonatomic = true,
.dynamic = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &byt_wm5102_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_wm5102_aif1_ops,
SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
},
/* back ends */
{
/*
* This must be named SSP2-Codec even though this machine driver
* always uses SSP0. Most machine drivers support both and dynamically
* update the dailink to point to SSP0 or SSP2, while keeping the name
* as "SSP2-Codec". The SOF tplg files hardcode the "SSP2-Codec" even
* in the byt-foo-ssp0.tplg versions because the other machine-drivers
* use "SSP2-Codec" even when SSP0 is used.
*/
.name = "SSP2-Codec",
.id = 0,
.no_pcm = 1,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBC_CFC,
.be_hw_params_fixup = byt_wm5102_codec_fixup,
.dpcm_playback = 1,
.dpcm_capture = 1,
.init = byt_wm5102_init,
SND_SOC_DAILINK_REG(ssp0_port, ssp0_codec, platform),
},
};
/* use space before codec name to simplify card ID, and simplify driver name */
#define SOF_CARD_NAME "bytcht wm5102" /* card name will be 'sof-bytcht wm5102' */
#define SOF_DRIVER_NAME "SOF"
#define CARD_NAME "bytcr-wm5102"
#define DRIVER_NAME NULL /* card name will be used for driver name */
/* SoC card */
static struct snd_soc_card byt_wm5102_card = {
.owner = THIS_MODULE,
.dai_link = byt_wm5102_dais,
.num_links = ARRAY_SIZE(byt_wm5102_dais),
.dapm_widgets = byt_wm5102_widgets,
.num_dapm_widgets = ARRAY_SIZE(byt_wm5102_widgets),
.dapm_routes = byt_wm5102_audio_map,
.num_dapm_routes = ARRAY_SIZE(byt_wm5102_audio_map),
.fully_routed = true,
};
static int snd_byt_wm5102_mc_probe(struct platform_device *pdev)
{
char codec_name[SND_ACPI_I2C_ID_LEN];
struct device *dev = &pdev->dev;
struct byt_wm5102_private *priv;
struct snd_soc_acpi_mach *mach;
const char *platform_name;
struct acpi_device *adev;
struct device *codec_dev;
bool sof_parent;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
/* Get MCLK */
priv->mclk = devm_clk_get(dev, "pmc_plt_clk_3");
if (IS_ERR(priv->mclk))
return dev_err_probe(dev, PTR_ERR(priv->mclk), "getting pmc_plt_clk_3\n");
/*
* Get speaker VDD enable GPIO:
* 1. Get codec-device-name
* 2. Get codec-device
* 3. Get GPIO from codec-device
*/
mach = dev->platform_data;
adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
if (!adev) {
dev_err(dev, "Error cannot find acpi-dev for codec\n");
return -ENOENT;
}
snprintf(codec_name, sizeof(codec_name), "spi-%s", acpi_dev_name(adev));
codec_dev = bus_find_device_by_name(&spi_bus_type, NULL, codec_name);
acpi_dev_put(adev);
if (!codec_dev)
return -EPROBE_DEFER;
/* Note no devm_ here since we call gpiod_get on codec_dev rather then dev */
priv->spkvdd_en_gpio = gpiod_get(codec_dev, "wlf,spkvdd-ena", GPIOD_OUT_LOW);
put_device(codec_dev);
if (IS_ERR(priv->spkvdd_en_gpio)) {
ret = PTR_ERR(priv->spkvdd_en_gpio);
/*
* The spkvdd gpio-lookup is registered by: drivers/mfd/arizona-spi.c,
* so -ENOENT means that arizona-spi hasn't probed yet.
*/
if (ret == -ENOENT)
ret = -EPROBE_DEFER;
return dev_err_probe(dev, ret, "getting spkvdd-GPIO\n");
}
/* override platform name, if required */
byt_wm5102_card.dev = dev;
platform_name = mach->mach_params.platform;
ret = snd_soc_fixup_dai_links_platform_name(&byt_wm5102_card, platform_name);
if (ret)
goto out_put_gpio;
/* set card and driver name and pm-ops */
sof_parent = snd_soc_acpi_sof_parent(dev);
if (sof_parent) {
byt_wm5102_card.name = SOF_CARD_NAME;
byt_wm5102_card.driver_name = SOF_DRIVER_NAME;
dev->driver->pm = &snd_soc_pm_ops;
} else {
byt_wm5102_card.name = CARD_NAME;
byt_wm5102_card.driver_name = DRIVER_NAME;
}
snd_soc_card_set_drvdata(&byt_wm5102_card, priv);
ret = devm_snd_soc_register_card(dev, &byt_wm5102_card);
if (ret) {
dev_err_probe(dev, ret, "registering card\n");
goto out_put_gpio;
}
platform_set_drvdata(pdev, &byt_wm5102_card);
return 0;
out_put_gpio:
gpiod_put(priv->spkvdd_en_gpio);
return ret;
}
static int snd_byt_wm5102_mc_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
gpiod_put(priv->spkvdd_en_gpio);
return 0;
}
static struct platform_driver snd_byt_wm5102_mc_driver = {
.driver = {
.name = "bytcr_wm5102",
},
.probe = snd_byt_wm5102_mc_probe,
.remove = snd_byt_wm5102_mc_remove,
};
module_platform_driver(snd_byt_wm5102_mc_driver);
MODULE_DESCRIPTION("ASoC Baytrail with WM5102 codec machine driver");
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:bytcr_wm5102");
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