xref: /openbmc/linux/sound/soc/qcom/sc8280xp.c (revision 841361d8)
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