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 | |
28 | static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd) |
29 | { |
30 | struct sm8250_snd_data *data = snd_soc_card_get_drvdata(card: rtd->card); |
31 | |
32 | return qcom_snd_wcd_jack_setup(rtd, jack: &data->jack, jack_setup: &data->jack_setup); |
33 | } |
34 | |
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 | |
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 = substream->private_data; |
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 TERTIARY_MI2S_RX: |
59 | codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S; |
60 | snd_soc_dai_set_sysclk(dai: cpu_dai, |
61 | Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT, |
62 | MI2S_BCLK_RATE, dir: SNDRV_PCM_STREAM_PLAYBACK); |
63 | snd_soc_dai_set_fmt(dai: cpu_dai, fmt); |
64 | snd_soc_dai_set_fmt(dai: codec_dai, fmt: codec_dai_fmt); |
65 | break; |
66 | default: |
67 | break; |
68 | } |
69 | |
70 | return qcom_snd_sdw_startup(substream); |
71 | } |
72 | |
73 | static void sm2450_snd_shutdown(struct snd_pcm_substream *substream) |
74 | { |
75 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
76 | struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); |
77 | struct sm8250_snd_data *data = snd_soc_card_get_drvdata(card: rtd->card); |
78 | struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; |
79 | |
80 | data->sruntime[cpu_dai->id] = NULL; |
81 | sdw_release_stream(stream: sruntime); |
82 | } |
83 | |
84 | static int sm8250_snd_hw_params(struct snd_pcm_substream *substream, |
85 | struct snd_pcm_hw_params *params) |
86 | { |
87 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
88 | struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); |
89 | struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(card: rtd->card); |
90 | |
91 | return qcom_snd_sdw_hw_params(substream, params, psruntime: &pdata->sruntime[cpu_dai->id]); |
92 | } |
93 | |
94 | static int sm8250_snd_prepare(struct snd_pcm_substream *substream) |
95 | { |
96 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
97 | struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); |
98 | struct sm8250_snd_data *data = snd_soc_card_get_drvdata(card: rtd->card); |
99 | struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; |
100 | |
101 | return qcom_snd_sdw_prepare(substream, runtime: sruntime, |
102 | stream_prepared: &data->stream_prepared[cpu_dai->id]); |
103 | } |
104 | |
105 | static int sm8250_snd_hw_free(struct snd_pcm_substream *substream) |
106 | { |
107 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
108 | struct sm8250_snd_data *data = snd_soc_card_get_drvdata(card: rtd->card); |
109 | struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); |
110 | struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; |
111 | |
112 | return qcom_snd_sdw_hw_free(substream, sruntime, |
113 | stream_prepared: &data->stream_prepared[cpu_dai->id]); |
114 | } |
115 | |
116 | static const struct snd_soc_ops sm8250_be_ops = { |
117 | .startup = sm8250_snd_startup, |
118 | .shutdown = sm2450_snd_shutdown, |
119 | .hw_params = sm8250_snd_hw_params, |
120 | .hw_free = sm8250_snd_hw_free, |
121 | .prepare = sm8250_snd_prepare, |
122 | }; |
123 | |
124 | static void sm8250_add_be_ops(struct snd_soc_card *card) |
125 | { |
126 | struct snd_soc_dai_link *link; |
127 | int i; |
128 | |
129 | for_each_card_prelinks(card, i, link) { |
130 | if (link->no_pcm == 1) { |
131 | link->init = sm8250_snd_init; |
132 | link->be_hw_params_fixup = sm8250_be_hw_params_fixup; |
133 | link->ops = &sm8250_be_ops; |
134 | } |
135 | } |
136 | } |
137 | |
138 | static int sm8250_platform_probe(struct platform_device *pdev) |
139 | { |
140 | struct snd_soc_card *card; |
141 | struct sm8250_snd_data *data; |
142 | struct device *dev = &pdev->dev; |
143 | int ret; |
144 | |
145 | card = devm_kzalloc(dev, size: sizeof(*card), GFP_KERNEL); |
146 | if (!card) |
147 | return -ENOMEM; |
148 | |
149 | card->owner = THIS_MODULE; |
150 | /* Allocate the private data */ |
151 | data = devm_kzalloc(dev, size: sizeof(*data), GFP_KERNEL); |
152 | if (!data) |
153 | return -ENOMEM; |
154 | |
155 | card->dev = dev; |
156 | dev_set_drvdata(dev, data: card); |
157 | snd_soc_card_set_drvdata(card, data); |
158 | ret = qcom_snd_parse_of(card); |
159 | if (ret) |
160 | return ret; |
161 | |
162 | card->driver_name = DRIVER_NAME; |
163 | sm8250_add_be_ops(card); |
164 | return devm_snd_soc_register_card(dev, card); |
165 | } |
166 | |
167 | static const struct of_device_id snd_sm8250_dt_match[] = { |
168 | {.compatible = "qcom,sm8250-sndcard" }, |
169 | {.compatible = "qcom,qrb5165-rb5-sndcard" }, |
170 | {} |
171 | }; |
172 | |
173 | MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match); |
174 | |
175 | static struct platform_driver snd_sm8250_driver = { |
176 | .probe = sm8250_platform_probe, |
177 | .driver = { |
178 | .name = "snd-sm8250" , |
179 | .of_match_table = snd_sm8250_dt_match, |
180 | }, |
181 | }; |
182 | module_platform_driver(snd_sm8250_driver); |
183 | MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org" ); |
184 | MODULE_DESCRIPTION("SM8250 ASoC Machine Driver" ); |
185 | MODULE_LICENSE("GPL" ); |
186 | |