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 "usb_offload_utils.h"
17 #include "sdw.h"
18
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 snd_soc_jack jack;
25 struct snd_soc_jack usb_offload_jack;
26 bool usb_offload_jack_setup;
27 struct snd_soc_jack dp_jack;
28 bool jack_setup;
29 };
30
sm8250_snd_init(struct snd_soc_pcm_runtime * rtd)31 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
32 {
33 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
34 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
35
36 switch (cpu_dai->id) {
37 case DISPLAY_PORT_RX:
38 return qcom_snd_dp_jack_setup(rtd, &data->dp_jack, 0);
39 case USB_RX:
40 return qcom_snd_usb_offload_jack_setup(rtd, &data->usb_offload_jack,
41 &data->usb_offload_jack_setup);
42 default:
43 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
44 }
45 }
46
sm8250_snd_exit(struct snd_soc_pcm_runtime * rtd)47 static void sm8250_snd_exit(struct snd_soc_pcm_runtime *rtd)
48 {
49 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
50 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
51
52 if (cpu_dai->id == USB_RX)
53 qcom_snd_usb_offload_jack_remove(rtd,
54 &data->usb_offload_jack_setup);
55
56 }
57
sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)58 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
59 struct snd_pcm_hw_params *params)
60 {
61 struct snd_interval *rate = hw_param_interval(params,
62 SNDRV_PCM_HW_PARAM_RATE);
63 struct snd_interval *channels = hw_param_interval(params,
64 SNDRV_PCM_HW_PARAM_CHANNELS);
65 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
66
67 rate->min = rate->max = 48000;
68 channels->min = channels->max = 2;
69 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
70
71 return 0;
72 }
73
sm8250_snd_startup(struct snd_pcm_substream * substream)74 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
75 {
76 unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
77 unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
78 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
79 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
80 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
81
82 switch (cpu_dai->id) {
83 case PRIMARY_MI2S_RX:
84 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
85 snd_soc_dai_set_sysclk(cpu_dai,
86 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
87 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
88 snd_soc_dai_set_fmt(cpu_dai, fmt);
89 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
90 break;
91 case SECONDARY_MI2S_RX:
92 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
93 snd_soc_dai_set_sysclk(cpu_dai,
94 Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
95 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
96 snd_soc_dai_set_fmt(cpu_dai, fmt);
97 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
98 break;
99 case TERTIARY_MI2S_RX:
100 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
101 snd_soc_dai_set_sysclk(cpu_dai,
102 Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
103 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
104 snd_soc_dai_set_fmt(cpu_dai, fmt);
105 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
106 break;
107 case QUINARY_MI2S_RX:
108 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
109 snd_soc_dai_set_sysclk(cpu_dai,
110 Q6AFE_LPASS_CLK_ID_QUI_MI2S_IBIT,
111 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
112 snd_soc_dai_set_fmt(cpu_dai, fmt);
113 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
114 break;
115 default:
116 break;
117 }
118
119 return qcom_snd_sdw_startup(substream);
120 }
121
sm8250_snd_prepare(struct snd_pcm_substream * substream)122 static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
123 {
124 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
125 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
126 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
127
128 return qcom_snd_sdw_prepare(substream, &data->stream_prepared[cpu_dai->id]);
129 }
130
sm8250_snd_hw_free(struct snd_pcm_substream * substream)131 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
132 {
133 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
134 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
135 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
136
137 return qcom_snd_sdw_hw_free(substream, &data->stream_prepared[cpu_dai->id]);
138 }
139
140 static const struct snd_soc_ops sm8250_be_ops = {
141 .startup = sm8250_snd_startup,
142 .shutdown = qcom_snd_sdw_shutdown,
143 .hw_free = sm8250_snd_hw_free,
144 .prepare = sm8250_snd_prepare,
145 };
146
sm8250_add_be_ops(struct snd_soc_card * card)147 static void sm8250_add_be_ops(struct snd_soc_card *card)
148 {
149 struct snd_soc_dai_link *link;
150 int i;
151
152 for_each_card_prelinks(card, i, link) {
153 if (link->no_pcm == 1) {
154 link->init = sm8250_snd_init;
155 link->exit = sm8250_snd_exit;
156 link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
157 link->ops = &sm8250_be_ops;
158 }
159 }
160 }
161
sm8250_platform_probe(struct platform_device * pdev)162 static int sm8250_platform_probe(struct platform_device *pdev)
163 {
164 struct snd_soc_card *card;
165 struct sm8250_snd_data *data;
166 struct device *dev = &pdev->dev;
167 int ret;
168
169 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
170 if (!card)
171 return -ENOMEM;
172
173 card->owner = THIS_MODULE;
174 /* Allocate the private data */
175 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
176 if (!data)
177 return -ENOMEM;
178
179 card->dev = dev;
180 dev_set_drvdata(dev, card);
181 snd_soc_card_set_drvdata(card, data);
182 ret = qcom_snd_parse_of(card);
183 if (ret)
184 return ret;
185
186 card->driver_name = of_device_get_match_data(dev);
187 sm8250_add_be_ops(card);
188 return devm_snd_soc_register_card(dev, card);
189 }
190
191 static const struct of_device_id snd_sm8250_dt_match[] = {
192 { .compatible = "fairphone,fp4-sndcard", .data = "sm7225" },
193 { .compatible = "fairphone,fp5-sndcard", .data = "qcm6490" },
194 { .compatible = "qcom,qrb2210-sndcard", .data = "qcm2290" },
195 { .compatible = "qcom,qrb4210-rb2-sndcard", .data = "sm4250" },
196 { .compatible = "qcom,qrb5165-rb5-sndcard", .data = "sm8250" },
197 { .compatible = "qcom,sm8250-sndcard", .data = "sm8250" },
198 {}
199 };
200
201 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
202
203 static struct platform_driver snd_sm8250_driver = {
204 .probe = sm8250_platform_probe,
205 .driver = {
206 .name = "snd-sm8250",
207 .of_match_table = snd_sm8250_dt_match,
208 },
209 };
210 module_platform_driver(snd_sm8250_driver);
211 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
212 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
213 MODULE_LICENSE("GPL");
214