1 // SPDX-License-Identifier: GPL-2.0+
5 // Copyright (C) 2018 Simon Shields <simon@lineageos.org>
6 // Copyright (C) 2020 Samsung Electronics Co., Ltd.
9 #include <linux/gpio/consumer.h>
10 #include <linux/mfd/wm8994/registers.h>
11 #include <linux/module.h>
13 #include <linux/regulator/consumer.h>
14 #include <sound/jack.h>
15 #include <sound/soc.h>
16 #include <sound/soc-dapm.h>
19 #include "../codecs/wm8994.h"
22 * The MCLK1 clock source is XCLKOUT with its mux set to the external fixed rate
25 #define MCLK1_RATE 24000000U
26 #define MCLK2_RATE 32768U
27 #define DEFAULT_FLL1_RATE 11289600U
30 struct regulator *reg_mic_bias;
31 struct regulator *reg_submic_bias;
32 struct gpio_desc *gpio_fm_sel;
33 struct gpio_desc *gpio_lineout_sel;
34 unsigned int fll1_rate;
36 struct snd_soc_jack headset_jack;
39 static struct snd_soc_jack_pin headset_jack_pins[] = {
42 .mask = SND_JACK_HEADPHONE,
46 .mask = SND_JACK_MICROPHONE,
50 static int midas_start_fll1(struct snd_soc_pcm_runtime *rtd, unsigned int rate)
52 struct snd_soc_card *card = rtd->card;
53 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
54 struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
55 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
59 rate = priv->fll1_rate;
61 * If no new rate is requested, set FLL1 to a sane default for jack
65 rate = DEFAULT_FLL1_RATE;
67 if (rate != priv->fll1_rate && priv->fll1_rate) {
68 /* while reconfiguring, switch to MCLK2 for SYSCLK */
69 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
70 MCLK2_RATE, SND_SOC_CLOCK_IN);
72 dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
77 ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
80 dev_err(card->dev, "Failed to set FLL1 rate: %d\n", ret);
83 priv->fll1_rate = rate;
85 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_FLL1,
86 priv->fll1_rate, SND_SOC_CLOCK_IN);
88 dev_err(card->dev, "Failed to set SYSCLK source: %d\n", ret);
92 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK, 0,
93 SAMSUNG_I2S_OPCLK_PCLK);
95 dev_err(card->dev, "Failed to set OPCLK source: %d\n", ret);
102 static int midas_stop_fll1(struct snd_soc_pcm_runtime *rtd)
104 struct snd_soc_card *card = rtd->card;
105 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
106 struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
109 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
110 MCLK2_RATE, SND_SOC_CLOCK_IN);
112 dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
116 ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 0, 0, 0);
118 dev_err(card->dev, "Unable to stop FLL1: %d\n", ret);
127 static int midas_aif1_hw_params(struct snd_pcm_substream *substream,
128 struct snd_pcm_hw_params *params)
130 struct snd_soc_pcm_runtime *rtd = substream->private_data;
131 unsigned int pll_out;
133 /* AIF1CLK should be at least 3MHz for "optimal performance" */
134 if (params_rate(params) == 8000 || params_rate(params) == 11025)
135 pll_out = params_rate(params) * 512;
137 pll_out = params_rate(params) * 256;
139 return midas_start_fll1(rtd, pll_out);
142 static const struct snd_soc_ops midas_aif1_ops = {
143 .hw_params = midas_aif1_hw_params,
147 * We only have a single external speaker, so mix stereo data
148 * to a single mono stream.
150 static int midas_ext_spkmode(struct snd_soc_dapm_widget *w,
151 struct snd_kcontrol *kcontrol, int event)
153 struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
157 case SND_SOC_DAPM_PRE_PMU:
158 ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
159 WM8994_SPKMIXR_TO_SPKOUTL_MASK,
160 WM8994_SPKMIXR_TO_SPKOUTL);
162 case SND_SOC_DAPM_POST_PMD:
163 ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
164 WM8994_SPKMIXR_TO_SPKOUTL_MASK,
172 static int midas_mic_bias(struct snd_soc_dapm_widget *w,
173 struct snd_kcontrol *kcontrol, int event)
175 struct snd_soc_card *card = w->dapm->card;
176 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
179 case SND_SOC_DAPM_PRE_PMU:
180 return regulator_enable(priv->reg_mic_bias);
181 case SND_SOC_DAPM_POST_PMD:
182 return regulator_disable(priv->reg_mic_bias);
188 static int midas_submic_bias(struct snd_soc_dapm_widget *w,
189 struct snd_kcontrol *kcontrol, int event)
191 struct snd_soc_card *card = w->dapm->card;
192 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
195 case SND_SOC_DAPM_PRE_PMU:
196 return regulator_enable(priv->reg_submic_bias);
197 case SND_SOC_DAPM_POST_PMD:
198 return regulator_disable(priv->reg_submic_bias);
204 static int midas_fm_set(struct snd_soc_dapm_widget *w,
205 struct snd_kcontrol *kcontrol, int event)
207 struct snd_soc_card *card = w->dapm->card;
208 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
210 if (!priv->gpio_fm_sel)
214 case SND_SOC_DAPM_PRE_PMU:
215 gpiod_set_value_cansleep(priv->gpio_fm_sel, 1);
217 case SND_SOC_DAPM_POST_PMD:
218 gpiod_set_value_cansleep(priv->gpio_fm_sel, 0);
225 static int midas_line_set(struct snd_soc_dapm_widget *w,
226 struct snd_kcontrol *kcontrol, int event)
228 struct snd_soc_card *card = w->dapm->card;
229 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
231 if (!priv->gpio_lineout_sel)
235 case SND_SOC_DAPM_PRE_PMU:
236 gpiod_set_value_cansleep(priv->gpio_lineout_sel, 1);
238 case SND_SOC_DAPM_POST_PMD:
239 gpiod_set_value_cansleep(priv->gpio_lineout_sel, 0);
246 static const struct snd_kcontrol_new midas_controls[] = {
247 SOC_DAPM_PIN_SWITCH("HP"),
249 SOC_DAPM_PIN_SWITCH("SPK"),
250 SOC_DAPM_PIN_SWITCH("RCV"),
252 SOC_DAPM_PIN_SWITCH("LINE"),
253 SOC_DAPM_PIN_SWITCH("HDMI"),
255 SOC_DAPM_PIN_SWITCH("Main Mic"),
256 SOC_DAPM_PIN_SWITCH("Sub Mic"),
257 SOC_DAPM_PIN_SWITCH("Headset Mic"),
259 SOC_DAPM_PIN_SWITCH("FM In"),
262 static const struct snd_soc_dapm_widget midas_dapm_widgets[] = {
263 SND_SOC_DAPM_HP("HP", NULL),
265 SND_SOC_DAPM_SPK("SPK", midas_ext_spkmode),
266 SND_SOC_DAPM_SPK("RCV", NULL),
268 /* FIXME: toggle MAX77693 on i9300/i9305 */
269 SND_SOC_DAPM_LINE("LINE", midas_line_set),
270 SND_SOC_DAPM_LINE("HDMI", NULL),
271 SND_SOC_DAPM_LINE("FM In", midas_fm_set),
273 SND_SOC_DAPM_HP("Headphone", NULL),
274 SND_SOC_DAPM_MIC("Headset Mic", NULL),
275 SND_SOC_DAPM_MIC("Main Mic", midas_mic_bias),
276 SND_SOC_DAPM_MIC("Sub Mic", midas_submic_bias),
279 static int midas_set_bias_level(struct snd_soc_card *card,
280 struct snd_soc_dapm_context *dapm,
281 enum snd_soc_bias_level level)
283 struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card,
285 struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
287 if (dapm->dev != aif1_dai->dev)
291 case SND_SOC_BIAS_STANDBY:
292 return midas_stop_fll1(rtd);
293 case SND_SOC_BIAS_PREPARE:
294 return midas_start_fll1(rtd, 0);
302 static int midas_late_probe(struct snd_soc_card *card)
304 struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card,
306 struct snd_soc_dai *aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
307 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
310 /* Use MCLK2 as SYSCLK for boot */
311 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, MCLK2_RATE,
314 dev_err(aif1_dai->dev, "Failed to switch to MCLK2: %d\n", ret);
318 ret = snd_soc_card_jack_new_pins(card, "Headset",
319 SND_JACK_HEADSET | SND_JACK_MECHANICAL |
320 SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 |
321 SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5,
324 ARRAY_SIZE(headset_jack_pins));
328 wm8958_mic_detect(aif1_dai->component, &priv->headset_jack,
329 NULL, NULL, NULL, NULL);
333 static struct snd_soc_dai_driver midas_ext_dai[] = {
335 .name = "Voice call",
341 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
342 .formats = SNDRV_PCM_FMTBIT_S16_LE,
349 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
350 .formats = SNDRV_PCM_FMTBIT_S16_LE,
360 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
361 .formats = SNDRV_PCM_FMTBIT_S16_LE,
368 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
369 .formats = SNDRV_PCM_FMTBIT_S16_LE,
374 static const struct snd_soc_component_driver midas_component = {
375 .name = "midas-audio",
378 SND_SOC_DAILINK_DEFS(wm1811_hifi,
379 DAILINK_COMP_ARRAY(COMP_EMPTY()),
380 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
381 DAILINK_COMP_ARRAY(COMP_EMPTY()));
383 SND_SOC_DAILINK_DEFS(wm1811_voice,
384 DAILINK_COMP_ARRAY(COMP_EMPTY()),
385 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2")),
386 DAILINK_COMP_ARRAY(COMP_EMPTY()));
388 SND_SOC_DAILINK_DEFS(wm1811_bt,
389 DAILINK_COMP_ARRAY(COMP_EMPTY()),
390 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3")),
391 DAILINK_COMP_ARRAY(COMP_EMPTY()));
393 static struct snd_soc_dai_link midas_dai[] = {
395 .name = "WM8994 AIF1",
396 .stream_name = "HiFi Primary",
397 .ops = &midas_aif1_ops,
398 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
399 SND_SOC_DAIFMT_CBM_CFM,
400 SND_SOC_DAILINK_REG(wm1811_hifi),
402 .name = "WM1811 Voice",
403 .stream_name = "Voice call",
405 SND_SOC_DAILINK_REG(wm1811_voice),
408 .stream_name = "Bluetooth",
410 SND_SOC_DAILINK_REG(wm1811_bt),
414 static struct snd_soc_card midas_card = {
415 .name = "Midas WM1811",
416 .owner = THIS_MODULE,
418 .dai_link = midas_dai,
419 .num_links = ARRAY_SIZE(midas_dai),
420 .controls = midas_controls,
421 .num_controls = ARRAY_SIZE(midas_controls),
422 .dapm_widgets = midas_dapm_widgets,
423 .num_dapm_widgets = ARRAY_SIZE(midas_dapm_widgets),
425 .set_bias_level = midas_set_bias_level,
426 .late_probe = midas_late_probe,
429 static int midas_probe(struct platform_device *pdev)
431 struct device_node *cpu_dai_node = NULL, *codec_dai_node = NULL;
432 struct device_node *cpu = NULL, *codec = NULL;
433 struct snd_soc_card *card = &midas_card;
434 struct device *dev = &pdev->dev;
435 static struct snd_soc_dai_link *dai_link;
436 struct midas_priv *priv;
439 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
443 snd_soc_card_set_drvdata(card, priv);
446 priv->reg_mic_bias = devm_regulator_get(dev, "mic-bias");
447 if (IS_ERR(priv->reg_mic_bias)) {
448 dev_err(dev, "Failed to get mic bias regulator\n");
449 return PTR_ERR(priv->reg_mic_bias);
452 priv->reg_submic_bias = devm_regulator_get(dev, "submic-bias");
453 if (IS_ERR(priv->reg_submic_bias)) {
454 dev_err(dev, "Failed to get submic bias regulator\n");
455 return PTR_ERR(priv->reg_submic_bias);
458 priv->gpio_fm_sel = devm_gpiod_get_optional(dev, "fm-sel", GPIOD_OUT_HIGH);
459 if (IS_ERR(priv->gpio_fm_sel)) {
460 dev_err(dev, "Failed to get FM selection GPIO\n");
461 return PTR_ERR(priv->gpio_fm_sel);
464 priv->gpio_lineout_sel = devm_gpiod_get_optional(dev, "lineout-sel",
466 if (IS_ERR(priv->gpio_lineout_sel)) {
467 dev_err(dev, "Failed to get line out selection GPIO\n");
468 return PTR_ERR(priv->gpio_lineout_sel);
471 ret = snd_soc_of_parse_card_name(card, "model");
473 dev_err(dev, "Card name is not specified\n");
477 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
479 /* Backwards compatible way */
480 ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
482 dev_err(dev, "Audio routing invalid/unspecified\n");
487 cpu = of_get_child_by_name(dev->of_node, "cpu");
491 codec = of_get_child_by_name(dev->of_node, "codec");
497 cpu_dai_node = of_parse_phandle(cpu, "sound-dai", 0);
500 dev_err(dev, "parsing cpu/sound-dai failed\n");
505 codec_dai_node = of_parse_phandle(codec, "sound-dai", 0);
507 if (!codec_dai_node) {
508 dev_err(dev, "audio-codec property invalid/missing\n");
510 goto put_cpu_dai_node;
513 for_each_card_prelinks(card, i, dai_link) {
514 dai_link->codecs->of_node = codec_dai_node;
515 dai_link->cpus->of_node = cpu_dai_node;
516 dai_link->platforms->of_node = cpu_dai_node;
519 ret = devm_snd_soc_register_component(dev, &midas_component,
520 midas_ext_dai, ARRAY_SIZE(midas_ext_dai));
522 dev_err(dev, "Failed to register component: %d\n", ret);
523 goto put_codec_dai_node;
526 ret = devm_snd_soc_register_card(dev, card);
528 dev_err(dev, "Failed to register card: %d\n", ret);
529 goto put_codec_dai_node;
535 of_node_put(codec_dai_node);
537 of_node_put(cpu_dai_node);
541 static const struct of_device_id midas_of_match[] = {
542 { .compatible = "samsung,midas-audio" },
545 MODULE_DEVICE_TABLE(of, midas_of_match);
547 static struct platform_driver midas_driver = {
549 .name = "midas-audio",
550 .of_match_table = midas_of_match,
551 .pm = &snd_soc_pm_ops,
553 .probe = midas_probe,
555 module_platform_driver(midas_driver);
557 MODULE_AUTHOR("Simon Shields <simon@lineageos.org>");
558 MODULE_DESCRIPTION("ASoC support for Midas");
559 MODULE_LICENSE("GPL v2");