sc7280.c

  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");