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 sdw_stream_runtime *sruntime[AFE_PORT_MAX];
25 struct snd_soc_jack jack;
26 struct snd_soc_jack usb_offload_jack;
27 bool usb_offload_jack_setup;
28 struct snd_soc_jack dp_jack;
29 bool jack_setup;
30 };
31
sm8250_snd_init(struct snd_soc_pcm_runtime * rtd)32 static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
33 {
34 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
35 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
36
37 switch (cpu_dai->id) {
38 case DISPLAY_PORT_RX:
39 return qcom_snd_dp_jack_setup(rtd, &data->dp_jack, 0);
40 case USB_RX:
41 return qcom_snd_usb_offload_jack_setup(rtd, &data->usb_offload_jack,
42 &data->usb_offload_jack_setup);
43 default:
44 return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
45 }
46 }
47
sm8250_snd_exit(struct snd_soc_pcm_runtime * rtd)48 static void sm8250_snd_exit(struct snd_soc_pcm_runtime *rtd)
49 {
50 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
51 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
52
53 if (cpu_dai->id == USB_RX)
54 qcom_snd_usb_offload_jack_remove(rtd,
55 &data->usb_offload_jack_setup);
56
57 }
58
sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)59 static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
60 struct snd_pcm_hw_params *params)
61 {
62 struct snd_interval *rate = hw_param_interval(params,
63 SNDRV_PCM_HW_PARAM_RATE);
64 struct snd_interval *channels = hw_param_interval(params,
65 SNDRV_PCM_HW_PARAM_CHANNELS);
66 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
67
68 rate->min = rate->max = 48000;
69 channels->min = channels->max = 2;
70 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
71
72 return 0;
73 }
74
sm8250_snd_startup(struct snd_pcm_substream * substream)75 static int sm8250_snd_startup(struct snd_pcm_substream *substream)
76 {
77 unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
78 unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
79 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
80 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
81 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
82
83 switch (cpu_dai->id) {
84 case PRIMARY_MI2S_RX:
85 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
86 snd_soc_dai_set_sysclk(cpu_dai,
87 Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
88 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
89 snd_soc_dai_set_fmt(cpu_dai, fmt);
90 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
91 break;
92 case SECONDARY_MI2S_RX:
93 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
94 snd_soc_dai_set_sysclk(cpu_dai,
95 Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
96 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
97 snd_soc_dai_set_fmt(cpu_dai, fmt);
98 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
99 break;
100 case TERTIARY_MI2S_RX:
101 codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
102 snd_soc_dai_set_sysclk(cpu_dai,
103 Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
104 MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
105 snd_soc_dai_set_fmt(cpu_dai, fmt);
106 snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
107 break;
108 default:
109 break;
110 }
111
112 return qcom_snd_sdw_startup(substream);
113 }
114
sm8250_snd_shutdown(struct snd_pcm_substream * substream)115 static void sm8250_snd_shutdown(struct snd_pcm_substream *substream)
116 {
117 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
118 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
119 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
120 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
121
122 data->sruntime[cpu_dai->id] = NULL;
123 sdw_release_stream(sruntime);
124 }
125
sm8250_snd_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)126 static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
127 struct snd_pcm_hw_params *params)
128 {
129 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
130 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
131 struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
132
133 return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
134 }
135
sm8250_snd_prepare(struct snd_pcm_substream * substream)136 static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
137 {
138 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
139 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
140 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
141 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
142
143 return qcom_snd_sdw_prepare(substream, sruntime,
144 &data->stream_prepared[cpu_dai->id]);
145 }
146
sm8250_snd_hw_free(struct snd_pcm_substream * substream)147 static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
148 {
149 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
150 struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
151 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
152 struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
153
154 return qcom_snd_sdw_hw_free(substream, sruntime,
155 &data->stream_prepared[cpu_dai->id]);
156 }
157
158 static const struct snd_soc_ops sm8250_be_ops = {
159 .startup = sm8250_snd_startup,
160 .shutdown = sm8250_snd_shutdown,
161 .hw_params = sm8250_snd_hw_params,
162 .hw_free = sm8250_snd_hw_free,
163 .prepare = sm8250_snd_prepare,
164 };
165
sm8250_add_be_ops(struct snd_soc_card * card)166 static void sm8250_add_be_ops(struct snd_soc_card *card)
167 {
168 struct snd_soc_dai_link *link;
169 int i;
170
171 for_each_card_prelinks(card, i, link) {
172 if (link->no_pcm == 1) {
173 link->init = sm8250_snd_init;
174 link->exit = sm8250_snd_exit;
175 link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
176 link->ops = &sm8250_be_ops;
177 }
178 }
179 }
180
sm8250_platform_probe(struct platform_device * pdev)181 static int sm8250_platform_probe(struct platform_device *pdev)
182 {
183 struct snd_soc_card *card;
184 struct sm8250_snd_data *data;
185 struct device *dev = &pdev->dev;
186 int ret;
187
188 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
189 if (!card)
190 return -ENOMEM;
191
192 card->owner = THIS_MODULE;
193 /* Allocate the private data */
194 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
195 if (!data)
196 return -ENOMEM;
197
198 card->dev = dev;
199 dev_set_drvdata(dev, card);
200 snd_soc_card_set_drvdata(card, data);
201 ret = qcom_snd_parse_of(card);
202 if (ret)
203 return ret;
204
205 card->driver_name = of_device_get_match_data(dev);
206 sm8250_add_be_ops(card);
207 return devm_snd_soc_register_card(dev, card);
208 }
209
210 static const struct of_device_id snd_sm8250_dt_match[] = {
211 { .compatible = "fairphone,fp4-sndcard", .data = "sm7225" },
212 { .compatible = "fairphone,fp5-sndcard", .data = "qcm6490" },
213 { .compatible = "qcom,qrb4210-rb2-sndcard", .data = "sm4250" },
214 { .compatible = "qcom,qrb5165-rb5-sndcard", .data = "sm8250" },
215 { .compatible = "qcom,sm8250-sndcard", .data = "sm8250" },
216 {}
217 };
218
219 MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
220
221 static struct platform_driver snd_sm8250_driver = {
222 .probe = sm8250_platform_probe,
223 .driver = {
224 .name = "snd-sm8250",
225 .of_match_table = snd_sm8250_dt_match,
226 },
227 };
228 module_platform_driver(snd_sm8250_driver);
229 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
230 MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
231 MODULE_LICENSE("GPL");
232