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/mfd/wm8994/registers.h>
10 #include <linux/module.h>
12 #include <linux/of_device.h>
13 #include <linux/of_gpio.h>
14 #include <linux/regulator/consumer.h>
15 #include <sound/jack.h>
16 #include <sound/soc.h>
17 #include <sound/soc-dapm.h>
20 #include "../codecs/wm8994.h"
23 * The MCLK1 clock source is XCLKOUT with its mux set to the external fixed rate
26 #define MCLK1_RATE 24000000U
27 #define MCLK2_RATE 32768U
28 #define DEFAULT_FLL1_RATE 11289600U
31 struct regulator *reg_mic_bias;
32 struct regulator *reg_submic_bias;
33 struct gpio_desc *gpio_fm_sel;
34 struct gpio_desc *gpio_lineout_sel;
35 unsigned int fll1_rate;
37 struct snd_soc_jack headset_jack;
40 static int midas_start_fll1(struct snd_soc_pcm_runtime *rtd, unsigned int rate)
42 struct snd_soc_card *card = rtd->card;
43 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
44 struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
45 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
49 rate = priv->fll1_rate;
51 * If no new rate is requested, set FLL1 to a sane default for jack
55 rate = DEFAULT_FLL1_RATE;
57 if (rate != priv->fll1_rate && priv->fll1_rate) {
58 /* while reconfiguring, switch to MCLK2 for SYSCLK */
59 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
60 MCLK2_RATE, SND_SOC_CLOCK_IN);
62 dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
67 ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
70 dev_err(card->dev, "Failed to set FLL1 rate: %d\n", ret);
73 priv->fll1_rate = rate;
75 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_FLL1,
76 priv->fll1_rate, SND_SOC_CLOCK_IN);
78 dev_err(card->dev, "Failed to set SYSCLK source: %d\n", ret);
82 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK, 0,
83 SAMSUNG_I2S_OPCLK_PCLK);
85 dev_err(card->dev, "Failed to set OPCLK source: %d\n", ret);
92 static int midas_stop_fll1(struct snd_soc_pcm_runtime *rtd)
94 struct snd_soc_card *card = rtd->card;
95 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
96 struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
99 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
100 MCLK2_RATE, SND_SOC_CLOCK_IN);
102 dev_err(card->dev, "Unable to switch to MCLK2: %d\n", ret);
106 ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1, 0, 0, 0);
108 dev_err(card->dev, "Unable to stop FLL1: %d\n", ret);
117 static int midas_aif1_hw_params(struct snd_pcm_substream *substream,
118 struct snd_pcm_hw_params *params)
120 struct snd_soc_pcm_runtime *rtd = substream->private_data;
121 unsigned int pll_out;
123 /* AIF1CLK should be at least 3MHz for "optimal performance" */
124 if (params_rate(params) == 8000 || params_rate(params) == 11025)
125 pll_out = params_rate(params) * 512;
127 pll_out = params_rate(params) * 256;
129 return midas_start_fll1(rtd, pll_out);
132 static const struct snd_soc_ops midas_aif1_ops = {
133 .hw_params = midas_aif1_hw_params,
137 * We only have a single external speaker, so mix stereo data
138 * to a single mono stream.
140 static int midas_ext_spkmode(struct snd_soc_dapm_widget *w,
141 struct snd_kcontrol *kcontrol, int event)
143 struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
147 case SND_SOC_DAPM_PRE_PMU:
148 ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
149 WM8994_SPKMIXR_TO_SPKOUTL_MASK,
150 WM8994_SPKMIXR_TO_SPKOUTL);
152 case SND_SOC_DAPM_POST_PMD:
153 ret = snd_soc_component_update_bits(codec, WM8994_SPKOUT_MIXERS,
154 WM8994_SPKMIXR_TO_SPKOUTL_MASK,
162 static int midas_mic_bias(struct snd_soc_dapm_widget *w,
163 struct snd_kcontrol *kcontrol, int event)
165 struct snd_soc_card *card = w->dapm->card;
166 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
169 case SND_SOC_DAPM_PRE_PMU:
170 return regulator_enable(priv->reg_mic_bias);
171 case SND_SOC_DAPM_POST_PMD:
172 return regulator_disable(priv->reg_mic_bias);
178 static int midas_submic_bias(struct snd_soc_dapm_widget *w,
179 struct snd_kcontrol *kcontrol, int event)
181 struct snd_soc_card *card = w->dapm->card;
182 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
185 case SND_SOC_DAPM_PRE_PMU:
186 return regulator_enable(priv->reg_submic_bias);
187 case SND_SOC_DAPM_POST_PMD:
188 return regulator_disable(priv->reg_submic_bias);
194 static int midas_fm_set(struct snd_soc_dapm_widget *w,
195 struct snd_kcontrol *kcontrol, int event)
197 struct snd_soc_card *card = w->dapm->card;
198 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
200 if (!priv->gpio_fm_sel)
204 case SND_SOC_DAPM_PRE_PMU:
205 gpiod_set_value_cansleep(priv->gpio_fm_sel, 1);
207 case SND_SOC_DAPM_POST_PMD:
208 gpiod_set_value_cansleep(priv->gpio_fm_sel, 0);
215 static int midas_line_set(struct snd_soc_dapm_widget *w,
216 struct snd_kcontrol *kcontrol, int event)
218 struct snd_soc_card *card = w->dapm->card;
219 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
221 if (!priv->gpio_lineout_sel)
225 case SND_SOC_DAPM_PRE_PMU:
226 gpiod_set_value_cansleep(priv->gpio_lineout_sel, 1);
228 case SND_SOC_DAPM_POST_PMD:
229 gpiod_set_value_cansleep(priv->gpio_lineout_sel, 0);
236 static const struct snd_kcontrol_new midas_controls[] = {
237 SOC_DAPM_PIN_SWITCH("HP"),
239 SOC_DAPM_PIN_SWITCH("SPK"),
240 SOC_DAPM_PIN_SWITCH("RCV"),
242 SOC_DAPM_PIN_SWITCH("LINE"),
243 SOC_DAPM_PIN_SWITCH("HDMI"),
245 SOC_DAPM_PIN_SWITCH("Main Mic"),
246 SOC_DAPM_PIN_SWITCH("Sub Mic"),
247 SOC_DAPM_PIN_SWITCH("Headset Mic"),
249 SOC_DAPM_PIN_SWITCH("FM In"),
252 static const struct snd_soc_dapm_widget midas_dapm_widgets[] = {
253 SND_SOC_DAPM_HP("HP", NULL),
255 SND_SOC_DAPM_SPK("SPK", midas_ext_spkmode),
256 SND_SOC_DAPM_SPK("RCV", NULL),
258 /* FIXME: toggle MAX77693 on i9300/i9305 */
259 SND_SOC_DAPM_LINE("LINE", midas_line_set),
260 SND_SOC_DAPM_LINE("HDMI", NULL),
261 SND_SOC_DAPM_LINE("FM In", midas_fm_set),
263 SND_SOC_DAPM_MIC("Headset Mic", NULL),
264 SND_SOC_DAPM_MIC("Main Mic", midas_mic_bias),
265 SND_SOC_DAPM_MIC("Sub Mic", midas_submic_bias),
268 static int midas_set_bias_level(struct snd_soc_card *card,
269 struct snd_soc_dapm_context *dapm,
270 enum snd_soc_bias_level level)
272 struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card,
274 struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
276 if (dapm->dev != aif1_dai->dev)
280 case SND_SOC_BIAS_STANDBY:
281 return midas_stop_fll1(rtd);
282 case SND_SOC_BIAS_PREPARE:
283 return midas_start_fll1(rtd, 0);
291 static int midas_late_probe(struct snd_soc_card *card)
293 struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card,
295 struct snd_soc_dai *aif1_dai = asoc_rtd_to_codec(rtd, 0);
296 struct midas_priv *priv = snd_soc_card_get_drvdata(card);
299 /* Use MCLK2 as SYSCLK for boot */
300 ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2, MCLK2_RATE,
303 dev_err(aif1_dai->dev, "Failed to switch to MCLK2: %d\n", ret);
307 ret = snd_soc_card_jack_new(card, "Headset",
308 SND_JACK_HEADSET | SND_JACK_MECHANICAL |
309 SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2 |
310 SND_JACK_BTN_3 | SND_JACK_BTN_4 | SND_JACK_BTN_5,
311 &priv->headset_jack, NULL, 0);
315 wm8958_mic_detect(aif1_dai->component, &priv->headset_jack,
316 NULL, NULL, NULL, NULL);
320 static struct snd_soc_dai_driver midas_ext_dai[] = {
322 .name = "Voice call",
328 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
329 .formats = SNDRV_PCM_FMTBIT_S16_LE,
336 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
337 .formats = SNDRV_PCM_FMTBIT_S16_LE,
347 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
348 .formats = SNDRV_PCM_FMTBIT_S16_LE,
355 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
356 .formats = SNDRV_PCM_FMTBIT_S16_LE,
361 static const struct snd_soc_component_driver midas_component = {
362 .name = "midas-audio",
365 SND_SOC_DAILINK_DEFS(wm1811_hifi,
366 DAILINK_COMP_ARRAY(COMP_EMPTY()),
367 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
368 DAILINK_COMP_ARRAY(COMP_EMPTY()));
370 SND_SOC_DAILINK_DEFS(wm1811_voice,
371 DAILINK_COMP_ARRAY(COMP_EMPTY()),
372 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2")),
373 DAILINK_COMP_ARRAY(COMP_EMPTY()));
375 SND_SOC_DAILINK_DEFS(wm1811_bt,
376 DAILINK_COMP_ARRAY(COMP_EMPTY()),
377 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3")),
378 DAILINK_COMP_ARRAY(COMP_EMPTY()));
380 static struct snd_soc_dai_link midas_dai[] = {
382 .name = "WM8994 AIF1",
383 .stream_name = "HiFi Primary",
384 .ops = &midas_aif1_ops,
385 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
386 SND_SOC_DAIFMT_CBM_CFM,
387 SND_SOC_DAILINK_REG(wm1811_hifi),
389 .name = "WM1811 Voice",
390 .stream_name = "Voice call",
392 SND_SOC_DAILINK_REG(wm1811_voice),
395 .stream_name = "Bluetooth",
397 SND_SOC_DAILINK_REG(wm1811_bt),
401 static struct snd_soc_card midas_card = {
402 .name = "Midas WM1811",
403 .owner = THIS_MODULE,
405 .dai_link = midas_dai,
406 .num_links = ARRAY_SIZE(midas_dai),
407 .controls = midas_controls,
408 .num_controls = ARRAY_SIZE(midas_controls),
409 .dapm_widgets = midas_dapm_widgets,
410 .num_dapm_widgets = ARRAY_SIZE(midas_dapm_widgets),
412 .set_bias_level = midas_set_bias_level,
413 .late_probe = midas_late_probe,
416 static int midas_probe(struct platform_device *pdev)
418 struct device_node *cpu_dai_node = NULL, *codec_dai_node = NULL;
419 struct device_node *cpu = NULL, *codec = NULL;
420 struct snd_soc_card *card = &midas_card;
421 struct device *dev = &pdev->dev;
422 static struct snd_soc_dai_link *dai_link;
423 struct midas_priv *priv;
426 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
430 snd_soc_card_set_drvdata(card, priv);
433 priv->reg_mic_bias = devm_regulator_get(dev, "mic-bias");
434 if (IS_ERR(priv->reg_mic_bias)) {
435 dev_err(dev, "Failed to get mic bias regulator\n");
436 return PTR_ERR(priv->reg_mic_bias);
439 priv->reg_submic_bias = devm_regulator_get(dev, "submic-bias");
440 if (IS_ERR(priv->reg_submic_bias)) {
441 dev_err(dev, "Failed to get submic bias regulator\n");
442 return PTR_ERR(priv->reg_submic_bias);
445 priv->gpio_fm_sel = devm_gpiod_get_optional(dev, "fm-sel", GPIOD_OUT_HIGH);
446 if (IS_ERR(priv->gpio_fm_sel)) {
447 dev_err(dev, "Failed to get FM selection GPIO\n");
448 return PTR_ERR(priv->gpio_fm_sel);
451 priv->gpio_lineout_sel = devm_gpiod_get_optional(dev, "lineout-sel",
453 if (IS_ERR(priv->gpio_lineout_sel)) {
454 dev_err(dev, "Failed to get line out selection GPIO\n");
455 return PTR_ERR(priv->gpio_lineout_sel);
458 ret = snd_soc_of_parse_card_name(card, "model");
460 dev_err(dev, "Card name is not specified\n");
464 ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
466 dev_err(dev, "Audio routing invalid/unspecified\n");
470 cpu = of_get_child_by_name(dev->of_node, "cpu");
474 codec = of_get_child_by_name(dev->of_node, "codec");
480 cpu_dai_node = of_parse_phandle(cpu, "sound-dai", 0);
483 dev_err(dev, "parsing cpu/sound-dai failed\n");
488 codec_dai_node = of_parse_phandle(codec, "sound-dai", 0);
490 if (!codec_dai_node) {
491 dev_err(dev, "audio-codec property invalid/missing\n");
493 goto put_cpu_dai_node;
496 for_each_card_prelinks(card, i, dai_link) {
497 dai_link->codecs->of_node = codec_dai_node;
498 dai_link->cpus->of_node = cpu_dai_node;
499 dai_link->platforms->of_node = cpu_dai_node;
502 ret = devm_snd_soc_register_component(dev, &midas_component,
503 midas_ext_dai, ARRAY_SIZE(midas_ext_dai));
505 dev_err(dev, "Failed to register component: %d\n", ret);
506 goto put_codec_dai_node;
509 ret = devm_snd_soc_register_card(dev, card);
511 dev_err(dev, "Failed to register card: %d\n", ret);
512 goto put_codec_dai_node;
518 of_node_put(codec_dai_node);
520 of_node_put(cpu_dai_node);
524 static const struct of_device_id midas_of_match[] = {
525 { .compatible = "samsung,midas-audio" },
528 MODULE_DEVICE_TABLE(of, midas_of_match);
530 static struct platform_driver midas_driver = {
532 .name = "midas-audio",
533 .of_match_table = midas_of_match,
534 .pm = &snd_soc_pm_ops,
536 .probe = midas_probe,
538 module_platform_driver(midas_driver);
540 MODULE_AUTHOR("Simon Shields <simon@lineageos.org>");
541 MODULE_DESCRIPTION("ASoC support for Midas");
542 MODULE_LICENSE("GPL v2");