// SPDX-License-Identifier: GPL-2.0-only
/*
* ASoC machine driver for Intel Broadwell platforms with RT5650 codec
*
* Copyright 2019, The Chromium OS Authors. All rights reserved.
*/
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/core.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/rt5645.h"
struct bdw_rt5650_priv {
struct gpio_desc *gpio_hp_en;
struct snd_soc_component *component;
};
static const struct snd_soc_dapm_widget bdw_rt5650_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("DMIC Pair1", NULL),
SND_SOC_DAPM_MIC("DMIC Pair2", NULL),
};
static const struct snd_soc_dapm_route bdw_rt5650_map[] = {
/* Speakers */
{"Speaker", NULL, "SPOL"},
{"Speaker", NULL, "SPOR"},
/* Headset jack connectors */
{"Headphone", NULL, "HPOL"},
{"Headphone", NULL, "HPOR"},
{"IN1P", NULL, "Headset Mic"},
{"IN1N", NULL, "Headset Mic"},
/* Digital MICs
* DMIC Pair1 are the two DMICs connected on the DMICN1 connector.
* DMIC Pair2 are the two DMICs connected on the DMICN2 connector.
* Facing the camera, DMIC Pair1 are on the left side, DMIC Pair2
* are on the right side.
*/
{"DMIC L1", NULL, "DMIC Pair1"},
{"DMIC R1", NULL, "DMIC Pair1"},
{"DMIC L2", NULL, "DMIC Pair2"},
{"DMIC R2", NULL, "DMIC Pair2"},
/* CODEC BE connections */
{"SSP0 CODEC IN", NULL, "AIF1 Capture"},
{"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
};
static const struct snd_kcontrol_new bdw_rt5650_controls[] = {
SOC_DAPM_PIN_SWITCH("Speaker"),
SOC_DAPM_PIN_SWITCH("Headphone"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("DMIC Pair1"),
SOC_DAPM_PIN_SWITCH("DMIC Pair2"),
};
static struct snd_soc_jack headphone_jack;
static struct snd_soc_jack mic_jack;
static struct snd_soc_jack_pin headphone_jack_pin = {
.pin = "Headphone",
.mask = SND_JACK_HEADPHONE,
};
static struct snd_soc_jack_pin mic_jack_pin = {
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
};
static int broadwell_ssp0_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 *chan = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
/* The ADSP will convert the FE rate to 48k, max 4-channels */
rate->min = rate->max = 48000;
chan->min = 2;
chan->max = 4;
/* set SSP0 to 24 bit */
snd_mask_set_format(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
SNDRV_PCM_FORMAT_S24_LE);
return 0;
}
static int bdw_rt5650_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
int ret;
/* Workaround: set codec PLL to 19.2MHz that PLL source is
* from MCLK(24MHz) to conform 2.4MHz DMIC clock.
*/
ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
24000000, 19200000);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
return ret;
}
/* The actual MCLK freq is 24MHz. The codec is told that MCLK is
* 24.576MHz to satisfy the requirement of rl6231_get_clk_info.
* ASRC is enabled on AD and DA filters to ensure good audio quality.
*/
ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1, 24576000,
SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec sysclk configuration\n");
return ret;
}
return ret;
}
static const struct snd_soc_ops bdw_rt5650_ops = {
.hw_params = bdw_rt5650_hw_params,
};
static const unsigned int channels[] = {
2, 4,
};
static const struct snd_pcm_hw_constraint_list constraints_channels = {
.count = ARRAY_SIZE(channels),
.list = channels,
.mask = 0,
};
static int bdw_rt5650_fe_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
/* Board supports stereo and quad configurations for capture */
if (substream->stream != SNDRV_PCM_STREAM_CAPTURE)
return 0;
runtime->hw.channels_max = 4;
return snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
&constraints_channels);
}
static const struct snd_soc_ops bdw_rt5650_fe_ops = {
.startup = bdw_rt5650_fe_startup,
};
static int bdw_rt5650_init(struct snd_soc_pcm_runtime *rtd)
{
struct bdw_rt5650_priv *bdw_rt5650 =
snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
int ret;
/* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1.
* The ASRC clock source is clk_i2s1_asrc.
*/
rt5645_sel_asrc_clk_src(component,
RT5645_DA_STEREO_FILTER |
RT5645_DA_MONO_L_FILTER |
RT5645_DA_MONO_R_FILTER |
RT5645_AD_STEREO_FILTER |
RT5645_AD_MONO_L_FILTER |
RT5645_AD_MONO_R_FILTER,
RT5645_CLK_SEL_I2S1_ASRC);
/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
return ret;
}
/* Create and initialize headphone jack */
if (snd_soc_card_jack_new_pins(rtd->card, "Headphone Jack",
SND_JACK_HEADPHONE, &headphone_jack,
&headphone_jack_pin, 1)) {
dev_err(component->dev, "Can't create headphone jack\n");
}
/* Create and initialize mic jack */
if (snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",
SND_JACK_MICROPHONE, &mic_jack, &mic_jack_pin, 1)) {
dev_err(component->dev, "Can't create mic jack\n");
}
rt5645_set_jack_detect(component, &headphone_jack, &mic_jack, NULL);
bdw_rt5650->component = component;
return 0;
}
/* broadwell digital audio interface glue - connects codec <--> CPU */
SND_SOC_DAILINK_DEF(dummy,
DAILINK_COMP_ARRAY(COMP_DUMMY()));
SND_SOC_DAILINK_DEF(fe,
DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));
SND_SOC_DAILINK_DEF(platform,
DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio")));
SND_SOC_DAILINK_DEF(be,
DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5650:00", "rt5645-aif1")));
SND_SOC_DAILINK_DEF(ssp0_port,
DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));
static struct snd_soc_dai_link bdw_rt5650_dais[] = {
/* Front End DAI links */
{
.name = "System PCM",
.stream_name = "System Playback",
.nonatomic = 1,
.dynamic = 1,
.ops = &bdw_rt5650_fe_ops,
.trigger = {
SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST
},
.dpcm_playback = 1,
.dpcm_capture = 1,
SND_SOC_DAILINK_REG(fe, dummy, platform),
},
/* Back End DAI links */
{
/* SSP0 - Codec */
.name = "Codec",
.id = 0,
.nonatomic = 1,
.no_pcm = 1,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBC_CFC,
.ignore_pmdown_time = 1,
.be_hw_params_fixup = broadwell_ssp0_fixup,
.ops = &bdw_rt5650_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
.init = bdw_rt5650_init,
SND_SOC_DAILINK_REG(ssp0_port, be, platform),
},
};
/* use space before codec name to simplify card ID, and simplify driver name */
#define SOF_CARD_NAME "bdw rt5650" /* card name will be 'sof-bdw rt5650' */
#define SOF_DRIVER_NAME "SOF"
#define CARD_NAME "bdw-rt5650"
#define DRIVER_NAME NULL /* card name will be used for driver name */
/* ASoC machine driver for Broadwell DSP + RT5650 */
static struct snd_soc_card bdw_rt5650_card = {
.name = CARD_NAME,
.driver_name = DRIVER_NAME,
.owner = THIS_MODULE,
.dai_link = bdw_rt5650_dais,
.num_links = ARRAY_SIZE(bdw_rt5650_dais),
.dapm_widgets = bdw_rt5650_widgets,
.num_dapm_widgets = ARRAY_SIZE(bdw_rt5650_widgets),
.dapm_routes = bdw_rt5650_map,
.num_dapm_routes = ARRAY_SIZE(bdw_rt5650_map),
.controls = bdw_rt5650_controls,
.num_controls = ARRAY_SIZE(bdw_rt5650_controls),
.fully_routed = true,
};
static int bdw_rt5650_probe(struct platform_device *pdev)
{
struct bdw_rt5650_priv *bdw_rt5650;
struct snd_soc_acpi_mach *mach;
int ret;
bdw_rt5650_card.dev = &pdev->dev;
/* Allocate driver private struct */
bdw_rt5650 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5650_priv),
GFP_KERNEL);
if (!bdw_rt5650)
return -ENOMEM;
/* override platform name, if required */
mach = pdev->dev.platform_data;
ret = snd_soc_fixup_dai_links_platform_name(&bdw_rt5650_card,
mach->mach_params.platform);
if (ret)
return ret;
/* set card and driver name */
if (snd_soc_acpi_sof_parent(&pdev->dev)) {
bdw_rt5650_card.name = SOF_CARD_NAME;
bdw_rt5650_card.driver_name = SOF_DRIVER_NAME;
} else {
bdw_rt5650_card.name = CARD_NAME;
bdw_rt5650_card.driver_name = DRIVER_NAME;
}
snd_soc_card_set_drvdata(&bdw_rt5650_card, bdw_rt5650);
return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5650_card);
}
static struct platform_driver bdw_rt5650_audio = {
.probe = bdw_rt5650_probe,
.driver = {
.name = "bdw-rt5650",
.pm = &snd_soc_pm_ops,
},
};
module_platform_driver(bdw_rt5650_audio)
/* Module information */
MODULE_AUTHOR("Ben Zhang <[email protected]>");
MODULE_DESCRIPTION("Intel Broadwell RT5650 machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:bdw-rt5650");
Codebase Browser
linux