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// SPDX-License-Identifier: GPL-2.0-only
/*
* cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms
* Cherrytrail and Braswell, with RT5672 codec.
*
* Copyright (C) 2014 Intel Corp
* Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
* Mengdong Lin <mengdong.lin@intel.com>
*/
#include <linux/gpio/consumer.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/soc-acpi.h>
#include "../../codecs/rt5670.h"
#include "../atom/sst-atom-controls.h"
/* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */
#define CHT_PLAT_CLK_3_HZ 19200000
#define CHT_CODEC_DAI "rt5670-aif1"
struct cht_mc_private {
struct snd_soc_jack headset;
char codec_name[SND_ACPI_I2C_ID_LEN];
struct clk *mclk;
};
/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin cht_bsw_headset_pins[] = {
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
{
.pin = "Headphone",
.mask = SND_JACK_HEADPHONE,
},
};
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)) {
if (ctx->mclk) {
ret = clk_prepare_enable(ctx->mclk);
if (ret < 0) {
dev_err(card->dev,
"could not configure MCLK state");
return ret;
}
}
/* set codec PLL source to the 19.2MHz platform clock (MCLK) */
ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
CHT_PLAT_CLK_3_HZ, 48000 * 512);
if (ret < 0) {
dev_err(card->dev, "can't set codec pll: %d\n", ret);
return ret;
}
/* set codec sysclk source to PLL */
ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
48000 * 512, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
return ret;
}
} else {
/* Set codec sysclk source to its internal clock because codec
* PLL will be off when idle and MCLK will also be off by ACPI
* when codec is runtime suspended. Codec needs clock for jack
* detection and button press.
*/
snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK,
48000 * 512, SND_SOC_CLOCK_IN);
if (ctx->mclk)
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[] = {
{"IN1P", NULL, "Headset Mic"},
{"IN1N", NULL, "Headset Mic"},
{"DMIC L1", NULL, "Int Mic"},
{"DMIC R1", NULL, "Int Mic"},
{"Headphone", NULL, "HPOL"},
{"Headphone", NULL, "HPOR"},
{"Ext Spk", NULL, "SPOLP"},
{"Ext Spk", NULL, "SPOLN"},
{"Ext Spk", NULL, "SPORP"},
{"Ext Spk", NULL, "SPORN"},
{"AIF1 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, "AIF1 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 = asoc_substream_to_rtd(substream);
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
int ret;
/* set codec PLL source to the 19.2MHz platform clock (MCLK) */
ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
return ret;
}
/* set codec sysclk source to PLL */
ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
params_rate(params) * 512,
SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
return ret;
}
return 0;
}
static const struct acpi_gpio_params headset_gpios = { 0, 0, false };
static const struct acpi_gpio_mapping cht_rt5672_gpios[] = {
{ "headset-gpios", &headset_gpios, 1 },
{},
};
static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
{
int ret;
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
struct snd_soc_component *component = codec_dai->component;
struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
if (devm_acpi_dev_add_driver_gpios(component->dev, cht_rt5672_gpios))
dev_warn(runtime->dev, "Unable to add GPIO mapping table\n");
/* Select codec ASRC clock source to track I2S1 clock, because codec
* is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot
* be supported by RT5672. Otherwise, ASRC will be disabled and cause
* noise.
*/
rt5670_sel_asrc_clk_src(component,
RT5670_DA_STEREO_FILTER
| RT5670_DA_MONO_L_FILTER
| RT5670_DA_MONO_R_FILTER
| RT5670_AD_STEREO_FILTER
| RT5670_AD_MONO_L_FILTER
| RT5670_AD_MONO_R_FILTER,
RT5670_CLK_SEL_I2S1_ASRC);
ret = snd_soc_card_jack_new(runtime->card, "Headset",
SND_JACK_HEADSET | SND_JACK_BTN_0 |
SND_JACK_BTN_1 | SND_JACK_BTN_2,
&ctx->headset,
cht_bsw_headset_pins,
ARRAY_SIZE(cht_bsw_headset_pins));
if (ret)
return ret;
snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
rt5670_set_jack_detect(component, &ctx->headset);
if (ctx->mclk) {
/*
* 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;
}
}
return 0;
}
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;
/* 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);
/*
* The default mode for the cpu-dai is TDM 4 slot. The default mode
* for the codec-dai is I2S. So we need to either set the cpu-dai to
* I2S mode to match the codec-dai, or set the codec-dai to TDM 4 slot
* (or program both to yet another mode).
* One board, the Lenovo Miix 2 10, uses not 1 but 2 codecs connected
* to SSP2. The second piggy-backed, output-only codec is inside the
* keyboard-dock (which has extra speakers). Unlike the main rt5672
* codec, we cannot configure this codec, it is hard coded to use
* 2 channel 24 bit I2S. For this to work we must use I2S mode on this
* board. Since we only support 2 channels anyways, there is no need
* for TDM on any cht-bsw-rt5672 designs. So we use I2S 2ch everywhere.
*/
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;
}
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 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,
};
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-10EC5670:00",
"rt5670-aif1")));
SND_SOC_DAILINK_DEF(platform,
DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
static struct snd_soc_dai_link cht_dailink[] = {
/* Front End DAI links */
[MERR_DPCM_AUDIO] = {
.name = "Audio Port",
.stream_name = "Audio",
.nonatomic = true,
.dynamic = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &cht_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 = &cht_aif1_ops,
SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
},
/* Back End DAI links */
{
/* SSP2 - Codec */
.name = "SSP2-Codec",
.id = 0,
.no_pcm = 1,
.nonatomic = true,
.init = cht_codec_init,
.be_hw_params_fixup = cht_codec_fixup,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &cht_be_ssp2_ops,
SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
},
};
static int cht_suspend_pre(struct snd_soc_card *card)
{
struct snd_soc_component *component;
struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
for_each_card_components(card, component) {
if (!strncmp(component->name,
ctx->codec_name, sizeof(ctx->codec_name))) {
dev_dbg(component->dev, "disabling jack detect before going to suspend.\n");
rt5670_jack_suspend(component);
break;
}
}
return 0;
}
static int cht_resume_post(struct snd_soc_card *card)
{
struct snd_soc_component *component;
struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
for_each_card_components(card, component) {
if (!strncmp(component->name,
ctx->codec_name, sizeof(ctx->codec_name))) {
dev_dbg(component->dev, "enabling jack detect for resume.\n");
rt5670_jack_resume(component);
break;
}
}
return 0;
}
/* use space before codec name to simplify card ID, and simplify driver name */
#define SOF_CARD_NAME "bytcht rt5672" /* card name will be 'sof-bytcht rt5672' */
#define SOF_DRIVER_NAME "SOF"
#define CARD_NAME "cht-bsw-rt5672"
#define DRIVER_NAME NULL /* card name will be used for driver name */
/* SoC card */
static struct snd_soc_card snd_soc_card_cht = {
.owner = THIS_MODULE,
.dai_link = cht_dailink,
.num_links = ARRAY_SIZE(cht_dailink),
.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),
.suspend_pre = cht_suspend_pre,
.resume_post = cht_resume_post,
};
#define RT5672_I2C_DEFAULT "i2c-10EC5670:00"
static int snd_cht_mc_probe(struct platform_device *pdev)
{
int ret_val = 0;
struct cht_mc_private *drv;
struct snd_soc_acpi_mach *mach = pdev->dev.platform_data;
const char *platform_name;
struct acpi_device *adev;
bool sof_parent;
int i;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
if (!drv)
return -ENOMEM;
strcpy(drv->codec_name, RT5672_I2C_DEFAULT);
/* fixup codec name based on HID */
adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
if (adev) {
snprintf(drv->codec_name, sizeof(drv->codec_name),
"i2c-%s", acpi_dev_name(adev));
put_device(&adev->dev);
for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) {
if (!strcmp(cht_dailink[i].codecs->name,
RT5672_I2C_DEFAULT)) {
cht_dailink[i].codecs->name = drv->codec_name;
break;
}
}
}
/* override plaform name, if required */
snd_soc_card_cht.dev = &pdev->dev;
platform_name = mach->mach_params.platform;
ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
platform_name);
if (ret_val)
return ret_val;
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);
}
snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
/* set card and driver name */
if (sof_parent) {
snd_soc_card_cht.name = SOF_CARD_NAME;
snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
} else {
snd_soc_card_cht.name = CARD_NAME;
snd_soc_card_cht.driver_name = DRIVER_NAME;
}
/* set pm ops */
if (sof_parent)
pdev->dev.driver->pm = &snd_soc_pm_ops;
/* register the soc card */
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-rt5672",
},
.probe = snd_cht_mc_probe,
};
module_platform_driver(snd_cht_mc_driver);
MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:cht-bsw-rt5672");