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
16 #define DRIVER_NAME "sc8280xp"
17
18 struct sc8280xp_snd_data {
19 bool stream_prepared[AFE_PORT_MAX];
20 struct snd_soc_card *card;
21 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
22 struct snd_soc_jack jack;
23 bool jack_setup;
24 };
25
sc8280xp_snd_init(struct snd_soc_pcm_runtime * rtd)26 static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
27 {
28 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
29
30 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
31 }
32
sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)33 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
34 struct snd_pcm_hw_params *params)
35 {
36 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
37 struct snd_interval *rate = hw_param_interval(params,
38 SNDRV_PCM_HW_PARAM_RATE);
39 struct snd_interval *channels = hw_param_interval(params,
40 SNDRV_PCM_HW_PARAM_CHANNELS);
41
42 rate->min = rate->max = 48000;
43 channels->min = 2;
44 channels->max = 2;
45 switch (cpu_dai->id) {
46 case TX_CODEC_DMA_TX_0:
47 case TX_CODEC_DMA_TX_1:
48 case TX_CODEC_DMA_TX_2:
49 case TX_CODEC_DMA_TX_3:
50 channels->min = 1;
51 break;
52 default:
53 break;
54 }
55
56
57 return 0;
58 }
59
sc8280xp_snd_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)60 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
61 struct snd_pcm_hw_params *params)
62 {
63 struct snd_soc_pcm_runtime *rtd = substream->private_data;
64 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
65 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
66
67 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
68 }
69
sc8280xp_snd_prepare(struct snd_pcm_substream * substream)70 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
71 {
72 struct snd_soc_pcm_runtime *rtd = substream->private_data;
73 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
74 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
75 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
76
77 return qcom_snd_sdw_prepare(substream, sruntime,
78 &data->stream_prepared[cpu_dai->id]);
79 }
80
sc8280xp_snd_hw_free(struct snd_pcm_substream * substream)81 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
82 {
83 struct snd_soc_pcm_runtime *rtd = substream->private_data;
84 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
85 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
86 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
87
88 return qcom_snd_sdw_hw_free(substream, sruntime,
89 &data->stream_prepared[cpu_dai->id]);
90 }
91
92 static const struct snd_soc_ops sc8280xp_be_ops = {
93 .hw_params = sc8280xp_snd_hw_params,
94 .hw_free = sc8280xp_snd_hw_free,
95 .prepare = sc8280xp_snd_prepare,
96 };
97
sc8280xp_add_be_ops(struct snd_soc_card * card)98 static void sc8280xp_add_be_ops(struct snd_soc_card *card)
99 {
100 struct snd_soc_dai_link *link;
101 int i;
102
103 for_each_card_prelinks(card, i, link) {
104 if (link->no_pcm == 1) {
105 link->init = sc8280xp_snd_init;
106 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
107 link->ops = &sc8280xp_be_ops;
108 }
109 }
110 }
111
sc8280xp_platform_probe(struct platform_device * pdev)112 static int sc8280xp_platform_probe(struct platform_device *pdev)
113 {
114 struct snd_soc_card *card;
115 struct sc8280xp_snd_data *data;
116 struct device *dev = &pdev->dev;
117 int ret;
118
119 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
120 if (!card)
121 return -ENOMEM;
122 card->owner = THIS_MODULE;
123 /* Allocate the private data */
124 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
125 if (!data)
126 return -ENOMEM;
127
128 card->dev = dev;
129 dev_set_drvdata(dev, card);
130 snd_soc_card_set_drvdata(card, data);
131 ret = qcom_snd_parse_of(card);
132 if (ret)
133 return ret;
134
135 card->driver_name = DRIVER_NAME;
136 sc8280xp_add_be_ops(card);
137 return devm_snd_soc_register_card(dev, card);
138 }
139
140 static const struct of_device_id snd_sc8280xp_dt_match[] = {
141 {.compatible = "qcom,sc8280xp-sndcard",},
142 {}
143 };
144
145 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
146
147 static struct platform_driver snd_sc8280xp_driver = {
148 .probe = sc8280xp_platform_probe,
149 .driver = {
150 .name = "snd-sc8280xp",
151 .of_match_table = snd_sc8280xp_dt_match,
152 },
153 };
154 module_platform_driver(snd_sc8280xp_driver);
155 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
156 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
157 MODULE_LICENSE("GPL v2");
158
