1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2020, 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
17 #define DRIVER_NAME "sm8250"
18 #define MI2S_BCLK_RATE 1536000
19
20 struct sm8250_snd_data {
21 bool stream_prepared[AFE_PORT_MAX];
22 struct snd_soc_card *card;
23 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
24 struct snd_soc_jack jack;
25 bool jack_setup;
26 };
27
sm8250_snd_init(struct snd_soc_pcm_runtime * rtd)28 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
29 {
30 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
31
32 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
33 }
34
sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)35 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
36 struct snd_pcm_hw_params *params)
37 {
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 = channels->max = 2;
45
46 return 0;
47 }
48
sm8250_snd_startup(struct snd_pcm_substream * substream)49 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
50 {
51 unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
52 unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
53 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
54 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
55 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
56
57 switch (cpu_dai->id) {
58 case PRIMARY_MI2S_RX:
59 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
60 snd_soc_dai_set_sysclk(cpu_dai,
61 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
62 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
63 snd_soc_dai_set_fmt(cpu_dai, fmt);
64 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
65 break;
66 case TERTIARY_MI2S_RX:
67 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
68 snd_soc_dai_set_sysclk(cpu_dai,
69 Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
70 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
71 snd_soc_dai_set_fmt(cpu_dai, fmt);
72 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
73 break;
74 default:
75 break;
76 }
77
78 return qcom_snd_sdw_startup(substream);
79 }
80
sm2450_snd_shutdown(struct snd_pcm_substream * substream)81 static void sm2450_snd_shutdown(struct snd_pcm_substream *substream)
82 {
83 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
84 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
85 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
86 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
87
88 data->sruntime[cpu_dai->id] = NULL;
89 sdw_release_stream(sruntime);
90 }
91
sm8250_snd_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)92 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
93 struct snd_pcm_hw_params *params)
94 {
95 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
96 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
97 struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
98
99 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
100 }
101
sm8250_snd_prepare(struct snd_pcm_substream * substream)102 static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
103 {
104 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
105 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
106 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
107 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
108
109 return qcom_snd_sdw_prepare(substream, sruntime,
110 &data->stream_prepared[cpu_dai->id]);
111 }
112
sm8250_snd_hw_free(struct snd_pcm_substream * substream)113 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
114 {
115 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
116 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
117 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
118 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
119
120 return qcom_snd_sdw_hw_free(substream, sruntime,
121 &data->stream_prepared[cpu_dai->id]);
122 }
123
124 static const struct snd_soc_ops sm8250_be_ops = {
125 .startup = sm8250_snd_startup,
126 .shutdown = sm2450_snd_shutdown,
127 .hw_params = sm8250_snd_hw_params,
128 .hw_free = sm8250_snd_hw_free,
129 .prepare = sm8250_snd_prepare,
130 };
131
sm8250_add_be_ops(struct snd_soc_card * card)132 static void sm8250_add_be_ops(struct snd_soc_card *card)
133 {
134 struct snd_soc_dai_link *link;
135 int i;
136
137 for_each_card_prelinks(card, i, link) {
138 if (link->no_pcm == 1) {
139 link->init = sm8250_snd_init;
140 link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
141 link->ops = &sm8250_be_ops;
142 }
143 }
144 }
145
sm8250_platform_probe(struct platform_device * pdev)146 static int sm8250_platform_probe(struct platform_device *pdev)
147 {
148 struct snd_soc_card *card;
149 struct sm8250_snd_data *data;
150 struct device *dev = &pdev->dev;
151 int ret;
152
153 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
154 if (!card)
155 return -ENOMEM;
156
157 card->owner = THIS_MODULE;
158 /* Allocate the private data */
159 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
160 if (!data)
161 return -ENOMEM;
162
163 card->dev = dev;
164 dev_set_drvdata(dev, card);
165 snd_soc_card_set_drvdata(card, data);
166 ret = qcom_snd_parse_of(card);
167 if (ret)
168 return ret;
169
170 card->driver_name = DRIVER_NAME;
171 sm8250_add_be_ops(card);
172 return devm_snd_soc_register_card(dev, card);
173 }
174
175 static const struct of_device_id snd_sm8250_dt_match[] = {
176 {.compatible = "qcom,sm8250-sndcard"},
177 {.compatible = "qcom,qrb4210-rb2-sndcard"},
178 {.compatible = "qcom,qrb5165-rb5-sndcard"},
179 {}
180 };
181
182 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
183
184 static struct platform_driver snd_sm8250_driver = {
185 .probe = sm8250_platform_probe,
186 .driver = {
187 .name = "snd-sm8250",
188 .of_match_table = snd_sm8250_dt_match,
189 },
190 };
191 module_platform_driver(snd_sm8250_driver);
192 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
193 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
194 MODULE_LICENSE("GPL");
195