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 <sound/pcm_params.h>
11 #include <linux/soundwire/sdw.h>
12 #include <sound/jack.h>
13 #include <linux/input-event-codes.h>
14 #include "qdsp6/q6afe.h"
15 #include "common.h"
16 #include "sdw.h"
17
18 #define DRIVER_NAME "sm8250"
19 #define MI2S_BCLK_RATE 1536000
20
21 struct sm8250_snd_data {
22 bool stream_prepared[AFE_PORT_MAX];
23 struct snd_soc_card *card;
24 struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
25 struct snd_soc_jack jack;
26 bool jack_setup;
27 };
28
sm8250_snd_init(struct snd_soc_pcm_runtime * rtd)29 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
30 {
31 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
32
33 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
34 }
35
sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)36 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
37 struct snd_pcm_hw_params *params)
38 {
39 struct snd_interval *rate = hw_param_interval(params,
40 SNDRV_PCM_HW_PARAM_RATE);
41 struct snd_interval *channels = hw_param_interval(params,
42 SNDRV_PCM_HW_PARAM_CHANNELS);
43 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
44
45 rate->min = rate->max = 48000;
46 channels->min = channels->max = 2;
47 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
48
49 return 0;
50 }
51
sm8250_snd_startup(struct snd_pcm_substream * substream)52 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
53 {
54 unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
55 unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
56 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
57 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
58 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
59
60 switch (cpu_dai->id) {
61 case PRIMARY_MI2S_RX:
62 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
63 snd_soc_dai_set_sysclk(cpu_dai,
64 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
65 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
66 snd_soc_dai_set_fmt(cpu_dai, fmt);
67 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
68 break;
69 case SECONDARY_MI2S_RX:
70 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
71 snd_soc_dai_set_sysclk(cpu_dai,
72 Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
73 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
74 snd_soc_dai_set_fmt(cpu_dai, fmt);
75 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
76 break;
77 case TERTIARY_MI2S_RX:
78 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
79 snd_soc_dai_set_sysclk(cpu_dai,
80 Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
81 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
82 snd_soc_dai_set_fmt(cpu_dai, fmt);
83 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
84 break;
85 default:
86 break;
87 }
88
89 return qcom_snd_sdw_startup(substream);
90 }
91
sm8250_snd_shutdown(struct snd_pcm_substream * substream)92 static void sm8250_snd_shutdown(struct snd_pcm_substream *substream)
93 {
94 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
95 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
96 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
97 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
98
99 data->sruntime[cpu_dai->id] = NULL;
100 sdw_release_stream(sruntime);
101 }
102
sm8250_snd_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)103 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
104 struct snd_pcm_hw_params *params)
105 {
106 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
107 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
108 struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
109
110 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
111 }
112
sm8250_snd_prepare(struct snd_pcm_substream * substream)113 static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
114 {
115 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
116 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
117 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
118 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
119
120 return qcom_snd_sdw_prepare(substream, sruntime,
121 &data->stream_prepared[cpu_dai->id]);
122 }
123
sm8250_snd_hw_free(struct snd_pcm_substream * substream)124 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
125 {
126 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
127 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
128 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
129 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
130
131 return qcom_snd_sdw_hw_free(substream, sruntime,
132 &data->stream_prepared[cpu_dai->id]);
133 }
134
135 static const struct snd_soc_ops sm8250_be_ops = {
136 .startup = sm8250_snd_startup,
137 .shutdown = sm8250_snd_shutdown,
138 .hw_params = sm8250_snd_hw_params,
139 .hw_free = sm8250_snd_hw_free,
140 .prepare = sm8250_snd_prepare,
141 };
142
sm8250_add_be_ops(struct snd_soc_card * card)143 static void sm8250_add_be_ops(struct snd_soc_card *card)
144 {
145 struct snd_soc_dai_link *link;
146 int i;
147
148 for_each_card_prelinks(card, i, link) {
149 if (link->no_pcm == 1) {
150 link->init = sm8250_snd_init;
151 link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
152 link->ops = &sm8250_be_ops;
153 }
154 }
155 }
156
sm8250_platform_probe(struct platform_device * pdev)157 static int sm8250_platform_probe(struct platform_device *pdev)
158 {
159 struct snd_soc_card *card;
160 struct sm8250_snd_data *data;
161 struct device *dev = &pdev->dev;
162 int ret;
163
164 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
165 if (!card)
166 return -ENOMEM;
167
168 card->owner = THIS_MODULE;
169 /* Allocate the private data */
170 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
171 if (!data)
172 return -ENOMEM;
173
174 card->dev = dev;
175 dev_set_drvdata(dev, card);
176 snd_soc_card_set_drvdata(card, data);
177 ret = qcom_snd_parse_of(card);
178 if (ret)
179 return ret;
180
181 card->driver_name = DRIVER_NAME;
182 sm8250_add_be_ops(card);
183 return devm_snd_soc_register_card(dev, card);
184 }
185
186 static const struct of_device_id snd_sm8250_dt_match[] = {
187 {.compatible = "qcom,sm8250-sndcard"},
188 {.compatible = "qcom,qrb4210-rb2-sndcard"},
189 {.compatible = "qcom,qrb5165-rb5-sndcard"},
190 {}
191 };
192
193 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
194
195 static struct platform_driver snd_sm8250_driver = {
196 .probe = sm8250_platform_probe,
197 .driver = {
198 .name = "snd-sm8250",
199 .of_match_table = snd_sm8250_dt_match,
200 },
201 };
202 module_platform_driver(snd_sm8250_driver);
203 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
204 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
205 MODULE_LICENSE("GPL");
206