272 lines
7.3 KiB
C
272 lines
7.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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//
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// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
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// CX2072X codec
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//
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#include <linux/acpi.h>
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#include <linux/device.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/jack.h>
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#include <sound/soc.h>
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#include <sound/soc-acpi.h>
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#include "../../codecs/cx2072x.h"
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#include "../atom/sst-atom-controls.h"
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static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
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SND_SOC_DAPM_HP("Headphone", NULL),
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SND_SOC_DAPM_MIC("Headset Mic", NULL),
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SND_SOC_DAPM_MIC("Int Mic", NULL),
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SND_SOC_DAPM_SPK("Ext Spk", NULL),
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};
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static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
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/* External Speakers: HFL, HFR */
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{"Headphone", NULL, "PORTA"},
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{"Ext Spk", NULL, "PORTG"},
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{"PORTC", NULL, "Int Mic"},
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{"PORTD", NULL, "Headset Mic"},
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{"Playback", NULL, "ssp2 Tx"},
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{"ssp2 Tx", NULL, "codec_out0"},
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{"ssp2 Tx", NULL, "codec_out1"},
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{"codec_in0", NULL, "ssp2 Rx"},
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{"codec_in1", NULL, "ssp2 Rx"},
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{"ssp2 Rx", NULL, "Capture"},
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};
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static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
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SOC_DAPM_PIN_SWITCH("Headphone"),
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SOC_DAPM_PIN_SWITCH("Headset Mic"),
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SOC_DAPM_PIN_SWITCH("Int Mic"),
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SOC_DAPM_PIN_SWITCH("Ext Spk"),
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};
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static struct snd_soc_jack byt_cht_cx2072x_headset;
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/* Headset jack detection DAPM pins */
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static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
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{
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.pin = "Headset Mic",
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.mask = SND_JACK_MICROPHONE,
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},
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{
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.pin = "Headphone",
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.mask = SND_JACK_HEADPHONE,
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},
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};
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static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
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static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
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{ "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
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{},
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};
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static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_card *card = rtd->card;
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struct snd_soc_component *codec = rtd->codec_dai->component;
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int ret;
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if (devm_acpi_dev_add_driver_gpios(codec->dev,
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byt_cht_cx2072x_acpi_gpios))
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dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");
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card->dapm.idle_bias_off = true;
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/* set the default PLL rate, the clock is handled by the codec driver */
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ret = snd_soc_dai_set_sysclk(rtd->codec_dai, CX2072X_MCLK_EXTERNAL_PLL,
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19200000, SND_SOC_CLOCK_IN);
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if (ret) {
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dev_err(rtd->dev, "Could not set sysclk\n");
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return ret;
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}
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ret = snd_soc_card_jack_new(card, "Headset",
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SND_JACK_HEADSET | SND_JACK_BTN_0,
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&byt_cht_cx2072x_headset,
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byt_cht_cx2072x_headset_pins,
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ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
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if (ret)
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return ret;
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snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);
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snd_soc_dai_set_bclk_ratio(rtd->codec_dai, 50);
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return ret;
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}
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static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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struct snd_interval *rate =
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hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels =
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hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
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int ret;
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/* The DSP will covert the FE rate to 48k, stereo, 24bits */
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rate->min = rate->max = 48000;
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channels->min = channels->max = 2;
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/* set SSP2 to 24-bit */
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params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
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/*
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* Default mode for SSP configuration is TDM 4 slot, override config
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* with explicit setting to I2S 2ch 24-bit. The word length is set with
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* dai_set_tdm_slot() since there is no other API exposed
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*/
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ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
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SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0) {
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dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24);
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if (ret < 0) {
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dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
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{
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return snd_pcm_hw_constraint_single(substream->runtime,
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SNDRV_PCM_HW_PARAM_RATE, 48000);
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}
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static struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
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.startup = byt_cht_cx2072x_aif1_startup,
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};
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SND_SOC_DAILINK_DEF(dummy,
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DAILINK_COMP_ARRAY(COMP_DUMMY()));
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SND_SOC_DAILINK_DEF(media,
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DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
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SND_SOC_DAILINK_DEF(deepbuffer,
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DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
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SND_SOC_DAILINK_DEF(ssp2,
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DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
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SND_SOC_DAILINK_DEF(cx2072x,
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DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));
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SND_SOC_DAILINK_DEF(platform,
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DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
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static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
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[MERR_DPCM_AUDIO] = {
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.name = "Audio Port",
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.stream_name = "Audio",
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.nonatomic = true,
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.dynamic = 1,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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.ops = &byt_cht_cx2072x_aif1_ops,
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SND_SOC_DAILINK_REG(media, dummy, platform),
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},
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[MERR_DPCM_DEEP_BUFFER] = {
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.name = "Deep-Buffer Audio Port",
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.stream_name = "Deep-Buffer Audio",
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.nonatomic = true,
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.dynamic = 1,
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.dpcm_playback = 1,
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.ops = &byt_cht_cx2072x_aif1_ops,
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SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
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},
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/* back ends */
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{
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.name = "SSP2-Codec",
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.id = 0,
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.no_pcm = 1,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
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.init = byt_cht_cx2072x_init,
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.be_hw_params_fixup = byt_cht_cx2072x_fixup,
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.nonatomic = true,
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.dpcm_playback = 1,
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.dpcm_capture = 1,
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SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
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},
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};
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/* SoC card */
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static struct snd_soc_card byt_cht_cx2072x_card = {
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.name = "bytcht-cx2072x",
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.owner = THIS_MODULE,
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.dai_link = byt_cht_cx2072x_dais,
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.num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
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.dapm_widgets = byt_cht_cx2072x_widgets,
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.num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
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.dapm_routes = byt_cht_cx2072x_audio_map,
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.num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
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.controls = byt_cht_cx2072x_controls,
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.num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
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};
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static char codec_name[SND_ACPI_I2C_ID_LEN];
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static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
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{
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struct snd_soc_acpi_mach *mach;
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struct acpi_device *adev;
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int dai_index = 0;
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int i, ret;
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byt_cht_cx2072x_card.dev = &pdev->dev;
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mach = dev_get_platdata(&pdev->dev);
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/* fix index of codec dai */
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for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
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if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
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"i2c-14F10720:00")) {
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dai_index = i;
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break;
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}
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}
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/* fixup codec name based on HID */
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adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
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if (adev) {
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snprintf(codec_name, sizeof(codec_name), "i2c-%s",
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acpi_dev_name(adev));
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put_device(&adev->dev);
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byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
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}
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/* override plaform name, if required */
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ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
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mach->mach_params.platform);
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if (ret)
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return ret;
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return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
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}
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static struct platform_driver snd_byt_cht_cx2072x_driver = {
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.driver = {
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.name = "bytcht_cx2072x",
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},
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.probe = snd_byt_cht_cx2072x_probe,
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};
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module_platform_driver(snd_byt_cht_cx2072x_driver);
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MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:bytcht_cx2072x");
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