1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2022, Linaro Limited
3
4#include <dt-bindings/sound/qcom,q6afe.h>
5#include <linux/module.h>
6#include <linux/platform_device.h>
7#include <sound/soc.h>
8#include <sound/soc-dapm.h>
9#include <sound/pcm.h>
10#include <linux/soundwire/sdw.h>
11#include <sound/jack.h>
12#include <linux/input-event-codes.h>
13#include "qdsp6/q6afe.h"
14#include "common.h"
15#include "sdw.h"
16
17struct sc8280xp_snd_data {
18	bool stream_prepared[AFE_PORT_MAX];
19	struct snd_soc_card *card;
20	struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
21	struct snd_soc_jack jack;
22	bool jack_setup;
23};
24
25static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
26{
27	struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
28	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
29	struct snd_soc_card *card = rtd->card;
30
31	switch (cpu_dai->id) {
32	case WSA_CODEC_DMA_RX_0:
33	case WSA_CODEC_DMA_RX_1:
34		/*
35		 * Set limit of -3 dB on Digital Volume and 0 dB on PA Volume
36		 * to reduce the risk of speaker damage until we have active
37		 * speaker protection in place.
38		 */
39		snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 81);
40		snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 81);
41		snd_soc_limit_volume(card, "SpkrLeft PA Volume", 17);
42		snd_soc_limit_volume(card, "SpkrRight PA Volume", 17);
43		break;
44	default:
45		break;
46	}
47
48	return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
49}
50
51static void sc8280xp_snd_shutdown(struct snd_pcm_substream *substream)
52{
53	struct snd_soc_pcm_runtime *rtd = substream->private_data;
54	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
55	struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
56	struct sdw_stream_runtime *sruntime = pdata->sruntime[cpu_dai->id];
57
58	pdata->sruntime[cpu_dai->id] = NULL;
59	sdw_release_stream(sruntime);
60}
61
62static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
63				     struct snd_pcm_hw_params *params)
64{
65	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
66	struct snd_interval *rate = hw_param_interval(params,
67					SNDRV_PCM_HW_PARAM_RATE);
68	struct snd_interval *channels = hw_param_interval(params,
69					SNDRV_PCM_HW_PARAM_CHANNELS);
70
71	rate->min = rate->max = 48000;
72	channels->min = 2;
73	channels->max = 2;
74	switch (cpu_dai->id) {
75	case TX_CODEC_DMA_TX_0:
76	case TX_CODEC_DMA_TX_1:
77	case TX_CODEC_DMA_TX_2:
78	case TX_CODEC_DMA_TX_3:
79		channels->min = 1;
80		break;
81	default:
82		break;
83	}
84
85
86	return 0;
87}
88
89static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
90				struct snd_pcm_hw_params *params)
91{
92	struct snd_soc_pcm_runtime *rtd = substream->private_data;
93	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
94	struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
95
96	return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
97}
98
99static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
100{
101	struct snd_soc_pcm_runtime *rtd = substream->private_data;
102	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
103	struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
104	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
105
106	return qcom_snd_sdw_prepare(substream, sruntime,
107				    &data->stream_prepared[cpu_dai->id]);
108}
109
110static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
111{
112	struct snd_soc_pcm_runtime *rtd = substream->private_data;
113	struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
114	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
115	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
116
117	return qcom_snd_sdw_hw_free(substream, sruntime,
118				    &data->stream_prepared[cpu_dai->id]);
119}
120
121static const struct snd_soc_ops sc8280xp_be_ops = {
122	.startup = qcom_snd_sdw_startup,
123	.shutdown = sc8280xp_snd_shutdown,
124	.hw_params = sc8280xp_snd_hw_params,
125	.hw_free = sc8280xp_snd_hw_free,
126	.prepare = sc8280xp_snd_prepare,
127};
128
129static void sc8280xp_add_be_ops(struct snd_soc_card *card)
130{
131	struct snd_soc_dai_link *link;
132	int i;
133
134	for_each_card_prelinks(card, i, link) {
135		if (link->no_pcm == 1) {
136			link->init = sc8280xp_snd_init;
137			link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
138			link->ops = &sc8280xp_be_ops;
139		}
140	}
141}
142
143static int sc8280xp_platform_probe(struct platform_device *pdev)
144{
145	struct snd_soc_card *card;
146	struct sc8280xp_snd_data *data;
147	struct device *dev = &pdev->dev;
148	int ret;
149
150	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
151	if (!card)
152		return -ENOMEM;
153	card->owner = THIS_MODULE;
154	/* Allocate the private data */
155	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
156	if (!data)
157		return -ENOMEM;
158
159	card->dev = dev;
160	dev_set_drvdata(dev, card);
161	snd_soc_card_set_drvdata(card, data);
162	ret = qcom_snd_parse_of(card);
163	if (ret)
164		return ret;
165
166	card->driver_name = of_device_get_match_data(dev);
167	sc8280xp_add_be_ops(card);
168	return devm_snd_soc_register_card(dev, card);
169}
170
171static const struct of_device_id snd_sc8280xp_dt_match[] = {
172	{.compatible = "qcom,sc8280xp-sndcard", "sc8280xp"},
173	{.compatible = "qcom,sm8450-sndcard", "sm8450"},
174	{.compatible = "qcom,sm8550-sndcard", "sm8550"},
175	{.compatible = "qcom,sm8650-sndcard", "sm8650"},
176	{}
177};
178
179MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
180
181static struct platform_driver snd_sc8280xp_driver = {
182	.probe  = sc8280xp_platform_probe,
183	.driver = {
184		.name = "snd-sc8280xp",
185		.of_match_table = snd_sc8280xp_dt_match,
186	},
187};
188module_platform_driver(snd_sc8280xp_driver);
189MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
190MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
191MODULE_LICENSE("GPL");
192