tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
4//
5// ALSA SoC Machine driver for sc7280
6
7#include <dt-bindings/sound/qcom,lpass.h>
8#include <dt-bindings/sound/qcom,q6afe.h>
9#include <linux/input.h>
10#include <linux/mod_devicetable.h>
11#include <linux/module.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 <sound/rt5682s.h>
18#include <linux/soundwire/sdw.h>
19#include <sound/pcm_params.h>
20
21#include "../codecs/rt5682.h"
22#include "../codecs/rt5682s.h"
23#include "common.h"
24#include "lpass.h"
25#include "qdsp6/q6afe.h"
26#include "sdw.h"
27
28#define DEFAULT_MCLK_RATE 19200000
29#define RT5682_PLL_FREQ (48000 * 512)
30#define MI2S_BCLK_RATE 1536000
31
32struct sc7280_snd_data {
33 struct snd_soc_card card;
34 u32 pri_mi2s_clk_count;
35 struct snd_soc_jack hs_jack;
36 struct snd_soc_jack hdmi_jack;
37 bool jack_setup;
38 bool stream_prepared[LPASS_MAX_PORTS];
39};
40
41static void sc7280_jack_free(struct snd_jack *jack)
42{
43 struct snd_soc_component *component = jack->private_data;
44
45 snd_soc_component_set_jack(component, NULL, NULL);
46}
47
48static struct snd_soc_jack_pin sc7280_jack_pins[] = {
49 {
50 .pin = "Headphone Jack",
51 .mask = SND_JACK_HEADPHONE,
52 },
53 {
54 .pin = "Headset Mic",
55 .mask = SND_JACK_MICROPHONE,
56 },
57};
58
59static int sc7280_headset_init(struct snd_soc_pcm_runtime *rtd)
60{
61 struct snd_soc_card *card = rtd->card;
62 struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
63 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
64 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
65 struct snd_soc_component *component = codec_dai->component;
66 struct snd_jack *jack;
67 int rval, i;
68
69 if (!pdata->jack_setup) {
70 rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
71 SND_JACK_HEADSET | SND_JACK_LINEOUT |
72 SND_JACK_MECHANICAL |
73 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
74 SND_JACK_BTN_2 | SND_JACK_BTN_3 |
75 SND_JACK_BTN_4 | SND_JACK_BTN_5,
76 &pdata->hs_jack,
77 sc7280_jack_pins,
78 ARRAY_SIZE(sc7280_jack_pins));
79
80 if (rval < 0) {
81 dev_err(card->dev, "Unable to add Headset Jack\n");
82 return rval;
83 }
84
85 jack = pdata->hs_jack.jack;
86
87 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
88 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
89 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
90 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
91
92 jack->private_data = component;
93 jack->private_free = sc7280_jack_free;
94 pdata->jack_setup = true;
95 }
96 switch (cpu_dai->id) {
97 case MI2S_PRIMARY:
98 case LPASS_CDC_DMA_RX0:
99 case LPASS_CDC_DMA_TX3:
100 case TX_CODEC_DMA_TX_3:
101 for_each_rtd_codec_dais(rtd, i, codec_dai) {
102 rval = snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
103 if (rval != 0 && rval != -ENOTSUPP) {
104 dev_err(card->dev, "Failed to set jack: %d\n", rval);
105 return rval;
106 }
107 }
108 break;
109 default:
110 break;
111 }
112
113 return 0;
114}
115
116static int sc7280_hdmi_init(struct snd_soc_pcm_runtime *rtd)
117{
118 struct snd_soc_card *card = rtd->card;
119 struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(card);
120 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
121 struct snd_soc_component *component = codec_dai->component;
122 struct snd_jack *jack;
123 int rval;
124
125 rval = snd_soc_card_jack_new(card, "HDMI Jack", SND_JACK_LINEOUT,
126 &pdata->hdmi_jack);
127
128 if (rval < 0) {
129 dev_err(card->dev, "Unable to add HDMI Jack\n");
130 return rval;
131 }
132
133 jack = pdata->hdmi_jack.jack;
134 jack->private_data = component;
135 jack->private_free = sc7280_jack_free;
136
137 return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
138}
139
140static int sc7280_rt5682_init(struct snd_soc_pcm_runtime *rtd)
141{
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 struct snd_soc_card *card = rtd->card;
145 struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card);
146 int ret;
147
148 if (++data->pri_mi2s_clk_count == 1) {
149 snd_soc_dai_set_sysclk(cpu_dai,
150 LPASS_MCLK0,
151 DEFAULT_MCLK_RATE,
152 SNDRV_PCM_STREAM_PLAYBACK);
153 }
154 snd_soc_dai_set_fmt(codec_dai,
155 SND_SOC_DAIFMT_CBC_CFC |
156 SND_SOC_DAIFMT_NB_NF |
157 SND_SOC_DAIFMT_I2S);
158
159 ret = snd_soc_dai_set_pll(codec_dai, RT5682S_PLL2, RT5682S_PLL_S_MCLK,
160 DEFAULT_MCLK_RATE, RT5682_PLL_FREQ);
161 if (ret) {
162 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
163 return ret;
164 }
165
166 ret = snd_soc_dai_set_sysclk(codec_dai, RT5682S_SCLK_S_PLL2,
167 RT5682_PLL_FREQ,
168 SND_SOC_CLOCK_IN);
169
170 if (ret) {
171 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n",
172 ret);
173 return ret;
174 }
175
176 return 0;
177}
178
179static int sc7280_init(struct snd_soc_pcm_runtime *rtd)
180{
181 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
182
183 switch (cpu_dai->id) {
184 case MI2S_PRIMARY:
185 case LPASS_CDC_DMA_TX3:
186 case TX_CODEC_DMA_TX_3:
187 return sc7280_headset_init(rtd);
188 case LPASS_CDC_DMA_RX0:
189 case LPASS_CDC_DMA_VA_TX0:
190 case MI2S_SECONDARY:
191 case RX_CODEC_DMA_RX_0:
192 case SECONDARY_MI2S_RX:
193 case VA_CODEC_DMA_TX_0:
194 return 0;
195 case LPASS_DP_RX:
196 return sc7280_hdmi_init(rtd);
197 default:
198 dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
199 }
200
201 return -EINVAL;
202}
203
204static int sc7280_snd_hw_params(struct snd_pcm_substream *substream,
205 struct snd_pcm_hw_params *params)
206{
207 struct snd_pcm_runtime *runtime = substream->runtime;
208 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
209
210 if (!rtd->dai_link->no_pcm) {
211 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
212 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, 48000, 48000);
213 }
214
215 return 0;
216}
217
218static int sc7280_snd_swr_prepare(struct snd_pcm_substream *substream)
219{
220 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
221 const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
222 struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
223
224 return qcom_snd_sdw_prepare(substream, &data->stream_prepared[cpu_dai->id]);
225}
226
227static int sc7280_snd_prepare(struct snd_pcm_substream *substream)
228{
229 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
230 const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
231
232 switch (cpu_dai->id) {
233 case LPASS_CDC_DMA_RX0:
234 case LPASS_CDC_DMA_TX3:
235 case RX_CODEC_DMA_RX_0:
236 case TX_CODEC_DMA_TX_3:
237 case VA_CODEC_DMA_TX_0:
238 return sc7280_snd_swr_prepare(substream);
239 default:
240 break;
241 }
242
243 return 0;
244}
245
246static int sc7280_snd_hw_free(struct snd_pcm_substream *substream)
247{
248 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
249 struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
250 const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
251
252 return qcom_snd_sdw_hw_free(substream, &data->stream_prepared[cpu_dai->id]);
253}
254
255static void sc7280_snd_shutdown(struct snd_pcm_substream *substream)
256{
257 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
258 struct snd_soc_card *card = rtd->card;
259 struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card);
260 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
261
262 switch (cpu_dai->id) {
263 case MI2S_PRIMARY:
264 if (--data->pri_mi2s_clk_count == 0) {
265 snd_soc_dai_set_sysclk(cpu_dai,
266 LPASS_MCLK0,
267 0,
268 SNDRV_PCM_STREAM_PLAYBACK);
269 }
270 break;
271 case SECONDARY_MI2S_RX:
272 snd_soc_dai_set_sysclk(cpu_dai, Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
273 0, SNDRV_PCM_STREAM_PLAYBACK);
274 break;
275 default:
276 break;
277 }
278
279 qcom_snd_sdw_shutdown(substream);
280}
281
282static int sc7280_snd_startup(struct snd_pcm_substream *substream)
283{
284 unsigned int fmt = SND_SOC_DAIFMT_CBC_CFC;
285 unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBC_CFC;
286 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
287 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
288 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
289 int ret = 0;
290
291 switch (cpu_dai->id) {
292 case MI2S_PRIMARY:
293 ret = sc7280_rt5682_init(rtd);
294 if (ret)
295 return ret;
296 break;
297 case SECONDARY_MI2S_RX:
298 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
299
300 snd_soc_dai_set_sysclk(cpu_dai, Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
301 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
302
303 snd_soc_dai_set_fmt(cpu_dai, fmt);
304 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
305 break;
306 default:
307 break;
308 }
309
310 return qcom_snd_sdw_startup(substream);
311}
312
313static const struct snd_soc_ops sc7280_ops = {
314 .startup = sc7280_snd_startup,
315 .hw_params = sc7280_snd_hw_params,
316 .hw_free = sc7280_snd_hw_free,
317 .prepare = sc7280_snd_prepare,
318 .shutdown = sc7280_snd_shutdown,
319};
320
321static const struct snd_soc_dapm_widget sc7280_snd_widgets[] = {
322 SND_SOC_DAPM_HP("Headphone Jack", NULL),
323 SND_SOC_DAPM_MIC("Headset Mic", NULL),
324};
325
326static const struct snd_kcontrol_new sc7280_snd_controls[] = {
327 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
328 SOC_DAPM_PIN_SWITCH("Headset Mic"),
329};
330
331static int sc7280_snd_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
332 struct snd_pcm_hw_params *params)
333{
334 struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
335 struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
336 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
337
338 rate->min = rate->max = 48000;
339 channels->min = channels->max = 2;
340 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
341
342 return 0;
343}
344
345static int sc7280_snd_platform_probe(struct platform_device *pdev)
346{
347 struct snd_soc_card *card;
348 struct sc7280_snd_data *data;
349 struct device *dev = &pdev->dev;
350 struct snd_soc_dai_link *link;
351 int ret, i;
352
353 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
354 if (!data)
355 return -ENOMEM;
356
357 card = &data->card;
358 snd_soc_card_set_drvdata(card, data);
359
360 card->owner = THIS_MODULE;
361 card->driver_name = "SC7280";
362 card->dev = dev;
363
364 card->dapm_widgets = sc7280_snd_widgets;
365 card->num_dapm_widgets = ARRAY_SIZE(sc7280_snd_widgets);
366 card->controls = sc7280_snd_controls;
367 card->num_controls = ARRAY_SIZE(sc7280_snd_controls);
368
369 ret = qcom_snd_parse_of(card);
370 if (ret)
371 return ret;
372
373 for_each_card_prelinks(card, i, link) {
374 link->init = sc7280_init;
375 link->ops = &sc7280_ops;
376 if (link->no_pcm == 1)
377 link->be_hw_params_fixup = sc7280_snd_be_hw_params_fixup;
378 }
379
380 return devm_snd_soc_register_card(dev, card);
381}
382
383static const struct of_device_id sc7280_snd_device_id[] = {
384 { .compatible = "google,sc7280-herobrine" },
385 {}
386};
387MODULE_DEVICE_TABLE(of, sc7280_snd_device_id);
388
389static struct platform_driver sc7280_snd_driver = {
390 .probe = sc7280_snd_platform_probe,
391 .driver = {
392 .name = "msm-snd-sc7280",
393 .of_match_table = sc7280_snd_device_id,
394 .pm = &snd_soc_pm_ops,
395 },
396};
397module_platform_driver(sc7280_snd_driver);
398
399MODULE_DESCRIPTION("sc7280 ASoC Machine Driver");
400MODULE_LICENSE("GPL");