1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright (c) 2020, The Linux Foundation. All rights reserved.
4 //
5 // sc7180.c -- ALSA SoC Machine driver for SC7180
6
7 #include <dt-bindings/sound/sc7180-lpass.h>
8 #include <linux/gpio.h>
9 #include <linux/gpio/consumer.h>
10 #include <linux/module.h>
11 #include <linux/of_device.h>
12 #include <linux/platform_device.h>
13 #include <sound/core.h>
14 #include <sound/jack.h>
15 #include <sound/pcm.h>
16 #include <sound/soc.h>
17 #include <uapi/linux/input-event-codes.h>
18
19 #include "../codecs/rt5682.h"
20 #include "../codecs/rt5682s.h"
21 #include "common.h"
22 #include "lpass.h"
23
24 #define DEFAULT_MCLK_RATE 19200000
25 #define RT5682_PLL1_FREQ (48000 * 512)
26
27 #define DRIVER_NAME "SC7180"
28
29 struct sc7180_snd_data {
30 struct snd_soc_card card;
31 u32 pri_mi2s_clk_count;
32 struct snd_soc_jack hs_jack;
33 struct snd_soc_jack hdmi_jack;
34 struct gpio_desc *dmic_sel;
35 int dmic_switch;
36 };
37
sc7180_jack_free(struct snd_jack * jack)38 static void sc7180_jack_free(struct snd_jack *jack)
39 {
40 struct snd_soc_component *component = jack->private_data;
41
42 snd_soc_component_set_jack(component, NULL, NULL);
43 }
44
45 static struct snd_soc_jack_pin sc7180_jack_pins[] = {
46 {
47 .pin = "Headphone Jack",
48 .mask = SND_JACK_HEADPHONE,
49 },
50 {
51 .pin = "Headset Mic",
52 .mask = SND_JACK_MICROPHONE,
53 },
54 };
55
sc7180_headset_init(struct snd_soc_pcm_runtime * rtd)56 static int sc7180_headset_init(struct snd_soc_pcm_runtime *rtd)
57 {
58 struct snd_soc_card *card = rtd->card;
59 struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
60 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
61 struct snd_soc_component *component = codec_dai->component;
62 struct snd_jack *jack;
63 int rval;
64
65 rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
66 SND_JACK_HEADSET |
67 SND_JACK_HEADPHONE |
68 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
69 SND_JACK_BTN_2 | SND_JACK_BTN_3,
70 &pdata->hs_jack,
71 sc7180_jack_pins,
72 ARRAY_SIZE(sc7180_jack_pins));
73
74 if (rval < 0) {
75 dev_err(card->dev, "Unable to add Headset Jack\n");
76 return rval;
77 }
78
79 jack = pdata->hs_jack.jack;
80
81 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
82 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
83 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
84 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
85
86 jack->private_data = component;
87 jack->private_free = sc7180_jack_free;
88
89 return snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
90 }
91
sc7180_hdmi_init(struct snd_soc_pcm_runtime * rtd)92 static int sc7180_hdmi_init(struct snd_soc_pcm_runtime *rtd)
93 {
94 struct snd_soc_card *card = rtd->card;
95 struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
96 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
97 struct snd_soc_component *component = codec_dai->component;
98 struct snd_jack *jack;
99 int rval;
100
101 rval = snd_soc_card_jack_new(
102 card, "HDMI Jack",
103 SND_JACK_LINEOUT,
104 &pdata->hdmi_jack);
105
106 if (rval < 0) {
107 dev_err(card->dev, "Unable to add HDMI Jack\n");
108 return rval;
109 }
110
111 jack = pdata->hdmi_jack.jack;
112 jack->private_data = component;
113 jack->private_free = sc7180_jack_free;
114
115 return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
116 }
117
sc7180_init(struct snd_soc_pcm_runtime * rtd)118 static int sc7180_init(struct snd_soc_pcm_runtime *rtd)
119 {
120 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
121
122 switch (cpu_dai->id) {
123 case MI2S_PRIMARY:
124 return sc7180_headset_init(rtd);
125 case MI2S_SECONDARY:
126 return 0;
127 case LPASS_DP_RX:
128 return sc7180_hdmi_init(rtd);
129 default:
130 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
131 cpu_dai->id);
132 return -EINVAL;
133 }
134 return 0;
135 }
136
sc7180_snd_startup(struct snd_pcm_substream * substream)137 static int sc7180_snd_startup(struct snd_pcm_substream *substream)
138 {
139 struct snd_soc_pcm_runtime *rtd = substream->private_data;
140 struct snd_soc_card *card = rtd->card;
141 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
142 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
143 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
144 int pll_id, pll_source, pll_in, pll_out, clk_id, ret;
145
146 if (!strcmp(codec_dai->name, "rt5682-aif1")) {
147 pll_source = RT5682_PLL1_S_MCLK;
148 pll_id = 0;
149 clk_id = RT5682_SCLK_S_PLL1;
150 pll_out = RT5682_PLL1_FREQ;
151 pll_in = DEFAULT_MCLK_RATE;
152 } else if (!strcmp(codec_dai->name, "rt5682s-aif1")) {
153 pll_source = RT5682S_PLL_S_MCLK;
154 pll_id = RT5682S_PLL2;
155 clk_id = RT5682S_SCLK_S_PLL2;
156 pll_out = RT5682_PLL1_FREQ;
157 pll_in = DEFAULT_MCLK_RATE;
158 }
159
160 switch (cpu_dai->id) {
161 case MI2S_PRIMARY:
162 if (++data->pri_mi2s_clk_count == 1) {
163 snd_soc_dai_set_sysclk(cpu_dai,
164 LPASS_MCLK0,
165 DEFAULT_MCLK_RATE,
166 SNDRV_PCM_STREAM_PLAYBACK);
167 }
168
169 snd_soc_dai_set_fmt(codec_dai,
170 SND_SOC_DAIFMT_BC_FC |
171 SND_SOC_DAIFMT_NB_NF |
172 SND_SOC_DAIFMT_I2S);
173
174 /* Configure PLL1 for codec */
175 ret = snd_soc_dai_set_pll(codec_dai, pll_id, pll_source,
176 pll_in, pll_out);
177 if (ret) {
178 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
179 return ret;
180 }
181
182 /* Configure sysclk for codec */
183 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, pll_out,
184 SND_SOC_CLOCK_IN);
185 if (ret)
186 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n",
187 ret);
188
189 break;
190 case MI2S_SECONDARY:
191 break;
192 case LPASS_DP_RX:
193 break;
194 default:
195 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
196 cpu_dai->id);
197 return -EINVAL;
198 }
199 return 0;
200 }
201
dmic_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)202 static int dmic_get(struct snd_kcontrol *kcontrol,
203 struct snd_ctl_elem_value *ucontrol)
204 {
205 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
206 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);
207
208 ucontrol->value.integer.value[0] = data->dmic_switch;
209 return 0;
210 }
211
dmic_set(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)212 static int dmic_set(struct snd_kcontrol *kcontrol,
213 struct snd_ctl_elem_value *ucontrol)
214 {
215 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
216 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);
217
218 data->dmic_switch = ucontrol->value.integer.value[0];
219 gpiod_set_value(data->dmic_sel, data->dmic_switch);
220 return 0;
221 }
222
sc7180_snd_shutdown(struct snd_pcm_substream * substream)223 static void sc7180_snd_shutdown(struct snd_pcm_substream *substream)
224 {
225 struct snd_soc_pcm_runtime *rtd = substream->private_data;
226 struct snd_soc_card *card = rtd->card;
227 struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
228 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
229
230 switch (cpu_dai->id) {
231 case MI2S_PRIMARY:
232 if (--data->pri_mi2s_clk_count == 0) {
233 snd_soc_dai_set_sysclk(cpu_dai,
234 LPASS_MCLK0,
235 0,
236 SNDRV_PCM_STREAM_PLAYBACK);
237 }
238 break;
239 case MI2S_SECONDARY:
240 break;
241 case LPASS_DP_RX:
242 break;
243 default:
244 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
245 cpu_dai->id);
246 break;
247 }
248 }
249
sc7180_adau7002_init(struct snd_soc_pcm_runtime * rtd)250 static int sc7180_adau7002_init(struct snd_soc_pcm_runtime *rtd)
251 {
252 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
253
254 switch (cpu_dai->id) {
255 case MI2S_PRIMARY:
256 return 0;
257 case MI2S_SECONDARY:
258 return 0;
259 case LPASS_DP_RX:
260 return sc7180_hdmi_init(rtd);
261 default:
262 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
263 cpu_dai->id);
264 return -EINVAL;
265 }
266 return 0;
267 }
268
sc7180_adau7002_snd_startup(struct snd_pcm_substream * substream)269 static int sc7180_adau7002_snd_startup(struct snd_pcm_substream *substream)
270 {
271 struct snd_soc_pcm_runtime *rtd = substream->private_data;
272 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
273 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
274 struct snd_pcm_runtime *runtime = substream->runtime;
275
276 switch (cpu_dai->id) {
277 case MI2S_PRIMARY:
278 snd_soc_dai_set_fmt(codec_dai,
279 SND_SOC_DAIFMT_CBS_CFS |
280 SND_SOC_DAIFMT_NB_NF |
281 SND_SOC_DAIFMT_I2S);
282 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;
283 snd_pcm_hw_constraint_msbits(runtime, 0, 32, 32);
284
285 break;
286 case MI2S_SECONDARY:
287 break;
288 case LPASS_DP_RX:
289 break;
290 default:
291 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
292 cpu_dai->id);
293 return -EINVAL;
294 }
295 return 0;
296 }
297
298 static const struct snd_soc_ops sc7180_ops = {
299 .startup = sc7180_snd_startup,
300 .shutdown = sc7180_snd_shutdown,
301 };
302
303 static const struct snd_soc_ops sc7180_adau7002_ops = {
304 .startup = sc7180_adau7002_snd_startup,
305 };
306
307 static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = {
308 SND_SOC_DAPM_HP("Headphone Jack", NULL),
309 SND_SOC_DAPM_MIC("Headset Mic", NULL),
310 };
311
312 static const struct snd_kcontrol_new sc7180_snd_controls[] = {
313 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
314 SOC_DAPM_PIN_SWITCH("Headset Mic"),
315 };
316
317 static const struct snd_soc_dapm_widget sc7180_adau7002_snd_widgets[] = {
318 SND_SOC_DAPM_MIC("DMIC", NULL),
319 };
320
321 static const char * const dmic_mux_text[] = {
322 "Front Mic",
323 "Rear Mic",
324 };
325
326 static SOC_ENUM_SINGLE_DECL(sc7180_dmic_enum,
327 SND_SOC_NOPM, 0, dmic_mux_text);
328
329 static const struct snd_kcontrol_new sc7180_dmic_mux_control =
330 SOC_DAPM_ENUM_EXT("DMIC Select Mux", sc7180_dmic_enum,
331 dmic_get, dmic_set);
332
333 static const struct snd_soc_dapm_widget sc7180_snd_dual_mic_widgets[] = {
334 SND_SOC_DAPM_HP("Headphone Jack", NULL),
335 SND_SOC_DAPM_MIC("Headset Mic", NULL),
336 SND_SOC_DAPM_MIC("DMIC", NULL),
337 SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0, &sc7180_dmic_mux_control),
338 };
339
340 static const struct snd_kcontrol_new sc7180_snd_dual_mic_controls[] = {
341 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
342 SOC_DAPM_PIN_SWITCH("Headset Mic"),
343 };
344
345 static const struct snd_soc_dapm_route sc7180_snd_dual_mic_audio_route[] = {
346 {"Dmic Mux", "Front Mic", "DMIC"},
347 {"Dmic Mux", "Rear Mic", "DMIC"},
348 };
349
sc7180_snd_platform_probe(struct platform_device * pdev)350 static int sc7180_snd_platform_probe(struct platform_device *pdev)
351 {
352 struct snd_soc_card *card;
353 struct sc7180_snd_data *data;
354 struct device *dev = &pdev->dev;
355 struct snd_soc_dai_link *link;
356 int ret;
357 int i;
358 bool no_headphone = false;
359
360 /* Allocate the private data */
361 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
362 if (!data)
363 return -ENOMEM;
364
365 card = &data->card;
366 snd_soc_card_set_drvdata(card, data);
367
368 card->owner = THIS_MODULE;
369 card->driver_name = DRIVER_NAME;
370 card->dev = dev;
371 card->dapm_widgets = sc7180_snd_widgets;
372 card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets);
373 card->controls = sc7180_snd_controls;
374 card->num_controls = ARRAY_SIZE(sc7180_snd_controls);
375
376 if (of_property_read_bool(dev->of_node, "dmic-gpios")) {
377 card->dapm_widgets = sc7180_snd_dual_mic_widgets,
378 card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_dual_mic_widgets),
379 card->controls = sc7180_snd_dual_mic_controls,
380 card->num_controls = ARRAY_SIZE(sc7180_snd_dual_mic_controls),
381 card->dapm_routes = sc7180_snd_dual_mic_audio_route,
382 card->num_dapm_routes = ARRAY_SIZE(sc7180_snd_dual_mic_audio_route),
383 data->dmic_sel = devm_gpiod_get(&pdev->dev, "dmic", GPIOD_OUT_LOW);
384 if (IS_ERR(data->dmic_sel)) {
385 dev_err(&pdev->dev, "DMIC gpio failed err=%ld\n", PTR_ERR(data->dmic_sel));
386 return PTR_ERR(data->dmic_sel);
387 }
388 }
389
390 if (of_device_is_compatible(dev->of_node, "google,sc7180-coachz")) {
391 no_headphone = true;
392 card->dapm_widgets = sc7180_adau7002_snd_widgets;
393 card->num_dapm_widgets = ARRAY_SIZE(sc7180_adau7002_snd_widgets);
394 }
395
396 ret = qcom_snd_parse_of(card);
397 if (ret)
398 return ret;
399
400 for_each_card_prelinks(card, i, link) {
401 if (no_headphone) {
402 link->ops = &sc7180_adau7002_ops;
403 link->init = sc7180_adau7002_init;
404 } else {
405 link->ops = &sc7180_ops;
406 link->init = sc7180_init;
407 }
408 }
409
410 return devm_snd_soc_register_card(dev, card);
411 }
412
413 static const struct of_device_id sc7180_snd_device_id[] = {
414 {.compatible = "google,sc7180-trogdor"},
415 {.compatible = "google,sc7180-coachz"},
416 {},
417 };
418 MODULE_DEVICE_TABLE(of, sc7180_snd_device_id);
419
420 static struct platform_driver sc7180_snd_driver = {
421 .probe = sc7180_snd_platform_probe,
422 .driver = {
423 .name = "msm-snd-sc7180",
424 .of_match_table = sc7180_snd_device_id,
425 .pm = &snd_soc_pm_ops,
426 },
427 };
428 module_platform_driver(sc7180_snd_driver);
429
430 MODULE_DESCRIPTION("sc7180 ASoC Machine Driver");
431 MODULE_LICENSE("GPL v2");
432