1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2022, Linaro Limited
3
4 #include <linux/module.h>
5 #include <linux/platform_device.h>
6 #include <linux/of_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
17 #define DRIVER_NAME "sc8280xp"
18
19 struct sc8280xp_snd_data {
20 bool stream_prepared[AFE_PORT_MAX];
21 struct snd_soc_card *card;
22 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
23 struct snd_soc_jack jack;
24 bool jack_setup;
25 };
26
sc8280xp_snd_init(struct snd_soc_pcm_runtime * rtd)27 static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
28 {
29 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
30 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
31 struct snd_soc_card *card = rtd->card;
32
33 switch (cpu_dai->id) {
34 case WSA_CODEC_DMA_RX_0:
35 case WSA_CODEC_DMA_RX_1:
36 /*
37 * Set limit of -3 dB on Digital Volume and 0 dB on PA Volume
38 * to reduce the risk of speaker damage until we have active
39 * speaker protection in place.
40 */
41 snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 81);
42 snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 81);
43 snd_soc_limit_volume(card, "SpkrLeft PA Volume", 17);
44 snd_soc_limit_volume(card, "SpkrRight PA Volume", 17);
45 break;
46 default:
47 break;
48 }
49
50 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
51 }
52
sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)53 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
54 struct snd_pcm_hw_params *params)
55 {
56 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
57 struct snd_interval *rate = hw_param_interval(params,
58 SNDRV_PCM_HW_PARAM_RATE);
59 struct snd_interval *channels = hw_param_interval(params,
60 SNDRV_PCM_HW_PARAM_CHANNELS);
61
62 rate->min = rate->max = 48000;
63 channels->min = 2;
64 channels->max = 2;
65 switch (cpu_dai->id) {
66 case TX_CODEC_DMA_TX_0:
67 case TX_CODEC_DMA_TX_1:
68 case TX_CODEC_DMA_TX_2:
69 case TX_CODEC_DMA_TX_3:
70 channels->min = 1;
71 break;
72 default:
73 break;
74 }
75
76
77 return 0;
78 }
79
sc8280xp_snd_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)80 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
81 struct snd_pcm_hw_params *params)
82 {
83 struct snd_soc_pcm_runtime *rtd = substream->private_data;
84 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
85 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
86
87 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
88 }
89
sc8280xp_snd_prepare(struct snd_pcm_substream * substream)90 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
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 *data = snd_soc_card_get_drvdata(rtd->card);
95 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
96
97 return qcom_snd_sdw_prepare(substream, sruntime,
98 &data->stream_prepared[cpu_dai->id]);
99 }
100
sc8280xp_snd_hw_free(struct snd_pcm_substream * substream)101 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
102 {
103 struct snd_soc_pcm_runtime *rtd = substream->private_data;
104 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
105 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
106 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
107
108 return qcom_snd_sdw_hw_free(substream, sruntime,
109 &data->stream_prepared[cpu_dai->id]);
110 }
111
112 static const struct snd_soc_ops sc8280xp_be_ops = {
113 .hw_params = sc8280xp_snd_hw_params,
114 .hw_free = sc8280xp_snd_hw_free,
115 .prepare = sc8280xp_snd_prepare,
116 };
117
sc8280xp_add_be_ops(struct snd_soc_card * card)118 static void sc8280xp_add_be_ops(struct snd_soc_card *card)
119 {
120 struct snd_soc_dai_link *link;
121 int i;
122
123 for_each_card_prelinks(card, i, link) {
124 if (link->no_pcm == 1) {
125 link->init = sc8280xp_snd_init;
126 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
127 link->ops = &sc8280xp_be_ops;
128 }
129 }
130 }
131
sc8280xp_platform_probe(struct platform_device * pdev)132 static int sc8280xp_platform_probe(struct platform_device *pdev)
133 {
134 struct snd_soc_card *card;
135 struct sc8280xp_snd_data *data;
136 struct device *dev = &pdev->dev;
137 int ret;
138
139 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
140 if (!card)
141 return -ENOMEM;
142 card->owner = THIS_MODULE;
143 /* Allocate the private data */
144 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
145 if (!data)
146 return -ENOMEM;
147
148 card->dev = dev;
149 dev_set_drvdata(dev, card);
150 snd_soc_card_set_drvdata(card, data);
151 ret = qcom_snd_parse_of(card);
152 if (ret)
153 return ret;
154
155 card->driver_name = DRIVER_NAME;
156 sc8280xp_add_be_ops(card);
157 return devm_snd_soc_register_card(dev, card);
158 }
159
160 static const struct of_device_id snd_sc8280xp_dt_match[] = {
161 {.compatible = "qcom,sc8280xp-sndcard",},
162 {}
163 };
164
165 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
166
167 static struct platform_driver snd_sc8280xp_driver = {
168 .probe = sc8280xp_platform_probe,
169 .driver = {
170 .name = "snd-sc8280xp",
171 .of_match_table = snd_sc8280xp_dt_match,
172 },
173 };
174 module_platform_driver(snd_sc8280xp_driver);
175 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
176 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
177 MODULE_LICENSE("GPL v2");
178