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
31 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
32 }
33
sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)34 static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
35 struct snd_pcm_hw_params *params)
36 {
37 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
38 struct snd_interval *rate = hw_param_interval(params,
39 SNDRV_PCM_HW_PARAM_RATE);
40 struct snd_interval *channels = hw_param_interval(params,
41 SNDRV_PCM_HW_PARAM_CHANNELS);
42
43 rate->min = rate->max = 48000;
44 channels->min = 2;
45 channels->max = 2;
46 switch (cpu_dai->id) {
47 case TX_CODEC_DMA_TX_0:
48 case TX_CODEC_DMA_TX_1:
49 case TX_CODEC_DMA_TX_2:
50 case TX_CODEC_DMA_TX_3:
51 channels->min = 1;
52 break;
53 default:
54 break;
55 }
56
57
58 return 0;
59 }
60
sc8280xp_snd_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)61 static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
62 struct snd_pcm_hw_params *params)
63 {
64 struct snd_soc_pcm_runtime *rtd = substream->private_data;
65 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
66 struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
67
68 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
69 }
70
sc8280xp_snd_prepare(struct snd_pcm_substream * substream)71 static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
72 {
73 struct snd_soc_pcm_runtime *rtd = substream->private_data;
74 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
75 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
76 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
77
78 return qcom_snd_sdw_prepare(substream, sruntime,
79 &data->stream_prepared[cpu_dai->id]);
80 }
81
sc8280xp_snd_hw_free(struct snd_pcm_substream * substream)82 static int sc8280xp_snd_hw_free(struct snd_pcm_substream *substream)
83 {
84 struct snd_soc_pcm_runtime *rtd = substream->private_data;
85 struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
86 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
87 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
88
89 return qcom_snd_sdw_hw_free(substream, sruntime,
90 &data->stream_prepared[cpu_dai->id]);
91 }
92
93 static const struct snd_soc_ops sc8280xp_be_ops = {
94 .hw_params = sc8280xp_snd_hw_params,
95 .hw_free = sc8280xp_snd_hw_free,
96 .prepare = sc8280xp_snd_prepare,
97 };
98
sc8280xp_add_be_ops(struct snd_soc_card * card)99 static void sc8280xp_add_be_ops(struct snd_soc_card *card)
100 {
101 struct snd_soc_dai_link *link;
102 int i;
103
104 for_each_card_prelinks(card, i, link) {
105 if (link->no_pcm == 1) {
106 link->init = sc8280xp_snd_init;
107 link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup;
108 link->ops = &sc8280xp_be_ops;
109 }
110 }
111 }
112
sc8280xp_platform_probe(struct platform_device * pdev)113 static int sc8280xp_platform_probe(struct platform_device *pdev)
114 {
115 struct snd_soc_card *card;
116 struct sc8280xp_snd_data *data;
117 struct device *dev = &pdev->dev;
118 int ret;
119
120 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
121 if (!card)
122 return -ENOMEM;
123 card->owner = THIS_MODULE;
124 /* Allocate the private data */
125 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
126 if (!data)
127 return -ENOMEM;
128
129 card->dev = dev;
130 dev_set_drvdata(dev, card);
131 snd_soc_card_set_drvdata(card, data);
132 ret = qcom_snd_parse_of(card);
133 if (ret)
134 return ret;
135
136 card->driver_name = DRIVER_NAME;
137 sc8280xp_add_be_ops(card);
138 return devm_snd_soc_register_card(dev, card);
139 }
140
141 static const struct of_device_id snd_sc8280xp_dt_match[] = {
142 {.compatible = "qcom,sc8280xp-sndcard",},
143 {}
144 };
145
146 MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match);
147
148 static struct platform_driver snd_sc8280xp_driver = {
149 .probe = sc8280xp_platform_probe,
150 .driver = {
151 .name = "snd-sc8280xp",
152 .of_match_table = snd_sc8280xp_dt_match,
153 },
154 };
155 module_platform_driver(snd_sc8280xp_driver);
156 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
157 MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver");
158 MODULE_LICENSE("GPL v2");
159