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(card: 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, name: "WSA_RX0 Digital Volume", max: 81);
40 snd_soc_limit_volume(card, name: "WSA_RX1 Digital Volume", max: 81);
41 snd_soc_limit_volume(card, name: "SpkrLeft PA Volume", max: 17);
42 snd_soc_limit_volume(card, name: "SpkrRight PA Volume", max: 17);
43 break;
44 default:
45 break;
46 }
47
48 return qcom_snd_wcd_jack_setup(rtd, jack: &data->jack, jack_setup: &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(card: 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(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(card: rtd->card);
95
96 return qcom_snd_sdw_hw_params(substream, params, psruntime: &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(card: rtd->card);
104 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
105
106 return qcom_snd_sdw_prepare(substream, runtime: sruntime,
107 stream_prepared: &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(card: 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 stream_prepared: &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, size: 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, size: sizeof(*data), GFP_KERNEL);
156 if (!data)
157 return -ENOMEM;
158
159 card->dev = dev;
160 dev_set_drvdata(dev, data: 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

source code of linux/sound/soc/qcom/sc8280xp.c