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1// SPDX-License-Identifier: GPL-2.0-only2//3// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with4// CX2072X codec5//6 7#include <linux/acpi.h>8#include <linux/device.h>9#include <linux/gpio/consumer.h>10#include <linux/module.h>11#include <linux/platform_device.h>12#include <linux/slab.h>13#include <sound/pcm.h>14#include <sound/pcm_params.h>15#include <sound/jack.h>16#include <sound/soc.h>17#include <sound/soc-acpi.h>18#include "../../codecs/cx2072x.h"19#include "../atom/sst-atom-controls.h"20 21static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {22 SND_SOC_DAPM_HP("Headphone", NULL),23 SND_SOC_DAPM_MIC("Headset Mic", NULL),24 SND_SOC_DAPM_MIC("Int Mic", NULL),25 SND_SOC_DAPM_SPK("Ext Spk", NULL),26};27 28static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {29 /* External Speakers: HFL, HFR */30 {"Headphone", NULL, "PORTA"},31 {"Ext Spk", NULL, "PORTG"},32 {"PORTC", NULL, "Int Mic"},33 {"PORTD", NULL, "Headset Mic"},34 35 {"Playback", NULL, "ssp2 Tx"},36 {"ssp2 Tx", NULL, "codec_out0"},37 {"ssp2 Tx", NULL, "codec_out1"},38 {"codec_in0", NULL, "ssp2 Rx"},39 {"codec_in1", NULL, "ssp2 Rx"},40 {"ssp2 Rx", NULL, "Capture"},41};42 43static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {44 SOC_DAPM_PIN_SWITCH("Headphone"),45 SOC_DAPM_PIN_SWITCH("Headset Mic"),46 SOC_DAPM_PIN_SWITCH("Int Mic"),47 SOC_DAPM_PIN_SWITCH("Ext Spk"),48};49 50static struct snd_soc_jack byt_cht_cx2072x_headset;51 52/* Headset jack detection DAPM pins */53static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {54 {55 .pin = "Headset Mic",56 .mask = SND_JACK_MICROPHONE,57 },58 {59 .pin = "Headphone",60 .mask = SND_JACK_HEADPHONE,61 },62};63 64static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;65static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {66 { "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },67 {},68};69 70static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)71{72 struct snd_soc_card *card = rtd->card;73 struct snd_soc_component *codec = snd_soc_rtd_to_codec(rtd, 0)->component;74 int ret;75 76 if (devm_acpi_dev_add_driver_gpios(codec->dev,77 byt_cht_cx2072x_acpi_gpios))78 dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");79 80 card->dapm.idle_bias_off = true;81 82 /* set the default PLL rate, the clock is handled by the codec driver */83 ret = snd_soc_dai_set_sysclk(snd_soc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,84 19200000, SND_SOC_CLOCK_IN);85 if (ret) {86 dev_err(rtd->dev, "Could not set sysclk\n");87 return ret;88 }89 90 ret = snd_soc_card_jack_new_pins(card, "Headset",91 SND_JACK_HEADSET | SND_JACK_BTN_0,92 &byt_cht_cx2072x_headset,93 byt_cht_cx2072x_headset_pins,94 ARRAY_SIZE(byt_cht_cx2072x_headset_pins));95 if (ret)96 return ret;97 98 snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);99 100 snd_soc_dai_set_bclk_ratio(snd_soc_rtd_to_codec(rtd, 0), 50);101 102 return 0;103}104 105static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,106 struct snd_pcm_hw_params *params)107{108 struct snd_interval *rate =109 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);110 struct snd_interval *channels =111 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);112 int ret;113 114 /* The DSP will convert the FE rate to 48k, stereo, 24bits */115 rate->min = rate->max = 48000;116 channels->min = channels->max = 2;117 118 /* set SSP2 to 24-bit */119 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);120 121 /*122 * Default mode for SSP configuration is TDM 4 slot, override config123 * with explicit setting to I2S 2ch 24-bit. The word length is set with124 * dai_set_tdm_slot() since there is no other API exposed125 */126 ret = snd_soc_dai_set_fmt(snd_soc_rtd_to_cpu(rtd, 0),127 SND_SOC_DAIFMT_I2S |128 SND_SOC_DAIFMT_NB_NF |129 SND_SOC_DAIFMT_BP_FP);130 if (ret < 0) {131 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);132 return ret;133 }134 135 ret = snd_soc_dai_set_tdm_slot(snd_soc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);136 if (ret < 0) {137 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);138 return ret;139 }140 141 return 0;142}143 144static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)145{146 return snd_pcm_hw_constraint_single(substream->runtime,147 SNDRV_PCM_HW_PARAM_RATE, 48000);148}149 150static const struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {151 .startup = byt_cht_cx2072x_aif1_startup,152};153 154SND_SOC_DAILINK_DEF(dummy,155 DAILINK_COMP_ARRAY(COMP_DUMMY()));156 157SND_SOC_DAILINK_DEF(media,158 DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));159 160SND_SOC_DAILINK_DEF(deepbuffer,161 DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));162 163SND_SOC_DAILINK_DEF(ssp2,164 DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));165 166SND_SOC_DAILINK_DEF(cx2072x,167 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));168 169SND_SOC_DAILINK_DEF(platform,170 DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));171 172static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {173 [MERR_DPCM_AUDIO] = {174 .name = "Audio Port",175 .stream_name = "Audio",176 .nonatomic = true,177 .dynamic = 1,178 .dpcm_playback = 1,179 .dpcm_capture = 1,180 .ops = &byt_cht_cx2072x_aif1_ops,181 SND_SOC_DAILINK_REG(media, dummy, platform),182 },183 [MERR_DPCM_DEEP_BUFFER] = {184 .name = "Deep-Buffer Audio Port",185 .stream_name = "Deep-Buffer Audio",186 .nonatomic = true,187 .dynamic = 1,188 .dpcm_playback = 1,189 .ops = &byt_cht_cx2072x_aif1_ops,190 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),191 },192 /* back ends */193 {194 .name = "SSP2-Codec",195 .id = 0,196 .no_pcm = 1,197 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF198 | SND_SOC_DAIFMT_CBC_CFC,199 .init = byt_cht_cx2072x_init,200 .be_hw_params_fixup = byt_cht_cx2072x_fixup,201 .dpcm_playback = 1,202 .dpcm_capture = 1,203 SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),204 },205};206 207/* use space before codec name to simplify card ID, and simplify driver name */208#define SOF_CARD_NAME "bytcht cx2072x" /* card name will be 'sof-bytcht cx2072x' */209#define SOF_DRIVER_NAME "SOF"210 211#define CARD_NAME "bytcht-cx2072x"212#define DRIVER_NAME NULL /* card name will be used for driver name */213 214/* SoC card */215static struct snd_soc_card byt_cht_cx2072x_card = {216 .name = CARD_NAME,217 .driver_name = DRIVER_NAME,218 .owner = THIS_MODULE,219 .dai_link = byt_cht_cx2072x_dais,220 .num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),221 .dapm_widgets = byt_cht_cx2072x_widgets,222 .num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),223 .dapm_routes = byt_cht_cx2072x_audio_map,224 .num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),225 .controls = byt_cht_cx2072x_controls,226 .num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),227};228 229static char codec_name[SND_ACPI_I2C_ID_LEN];230 231static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)232{233 struct snd_soc_acpi_mach *mach;234 struct acpi_device *adev;235 int dai_index = 0;236 bool sof_parent;237 int i, ret;238 239 byt_cht_cx2072x_card.dev = &pdev->dev;240 mach = dev_get_platdata(&pdev->dev);241 242 /* fix index of codec dai */243 for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {244 if (byt_cht_cx2072x_dais[i].num_codecs &&245 !strcmp(byt_cht_cx2072x_dais[i].codecs->name,246 "i2c-14F10720:00")) {247 dai_index = i;248 break;249 }250 }251 252 /* fixup codec name based on HID */253 adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);254 if (adev) {255 snprintf(codec_name, sizeof(codec_name), "i2c-%s",256 acpi_dev_name(adev));257 byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;258 } else {259 dev_err(&pdev->dev, "Error cannot find '%s' dev\n", mach->id);260 return -ENOENT;261 }262 263 acpi_dev_put(adev);264 265 /* override platform name, if required */266 ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,267 mach->mach_params.platform);268 if (ret)269 return ret;270 271 sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);272 273 /* set card and driver name */274 if (sof_parent) {275 byt_cht_cx2072x_card.name = SOF_CARD_NAME;276 byt_cht_cx2072x_card.driver_name = SOF_DRIVER_NAME;277 } else {278 byt_cht_cx2072x_card.name = CARD_NAME;279 byt_cht_cx2072x_card.driver_name = DRIVER_NAME;280 }281 282 /* set pm ops */283 if (sof_parent)284 pdev->dev.driver->pm = &snd_soc_pm_ops;285 286 return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);287}288 289static struct platform_driver snd_byt_cht_cx2072x_driver = {290 .driver = {291 .name = "bytcht_cx2072x",292 },293 .probe = snd_byt_cht_cx2072x_probe,294};295module_platform_driver(snd_byt_cht_cx2072x_driver);296 297MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");298MODULE_LICENSE("GPL v2");299MODULE_ALIAS("platform:bytcht_cx2072x");300