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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * bytcht_nocodec.c - ASoc Machine driver for MinnowBoard Max and Up
4 * to make I2S signals observable on the Low-Speed connector. Audio codec
5 * is not managed by ASoC/DAPM
6 *
7 * Copyright (C) 2015-2017 Intel Corp
8 *
9 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10 *
11 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12 */
13
14#include <linux/module.h>
15#include <sound/pcm.h>
16#include <sound/pcm_params.h>
17#include <sound/soc.h>
18#include "../atom/sst-atom-controls.h"
19
20static const struct snd_soc_dapm_widget widgets[] = {
21 SND_SOC_DAPM_MIC("Mic", NULL),
22 SND_SOC_DAPM_SPK("Speaker", NULL),
23};
24
25static const struct snd_kcontrol_new controls[] = {
26 SOC_DAPM_PIN_SWITCH("Mic"),
27 SOC_DAPM_PIN_SWITCH("Speaker"),
28};
29
30static const struct snd_soc_dapm_route audio_map[] = {
31 {"ssp2 Tx", NULL, "codec_out0"},
32 {"ssp2 Tx", NULL, "codec_out1"},
33 {"codec_in0", NULL, "ssp2 Rx"},
34 {"codec_in1", NULL, "ssp2 Rx"},
35
36 {"ssp2 Rx", NULL, "Mic"},
37 {"Speaker", NULL, "ssp2 Tx"},
38};
39
40static int codec_fixup(struct snd_soc_pcm_runtime *rtd,
41 struct snd_pcm_hw_params *params)
42{
43 struct snd_interval *rate = hw_param_interval(params,
44 SNDRV_PCM_HW_PARAM_RATE);
45 struct snd_interval *channels = hw_param_interval(params,
46 SNDRV_PCM_HW_PARAM_CHANNELS);
47 int ret;
48
49 /* The DSP will convert the FE rate to 48k, stereo, 24bits */
50 rate->min = rate->max = 48000;
51 channels->min = channels->max = 2;
52
53 /* set SSP2 to 24-bit */
54 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
55
56 /*
57 * Default mode for SSP configuration is TDM 4 slot, override config
58 * with explicit setting to I2S 2ch 24-bit. The word length is set with
59 * dai_set_tdm_slot() since there is no other API exposed
60 */
61 ret = snd_soc_dai_set_fmt(snd_soc_rtd_to_cpu(rtd, 0),
62 SND_SOC_DAIFMT_I2S |
63 SND_SOC_DAIFMT_NB_NF |
64 SND_SOC_DAIFMT_BP_FP);
65
66 if (ret < 0) {
67 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
68 return ret;
69 }
70
71 ret = snd_soc_dai_set_tdm_slot(snd_soc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
72 if (ret < 0) {
73 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
74 return ret;
75 }
76
77 return 0;
78}
79
80static const unsigned int rates_48000[] = {
81 48000,
82};
83
84static const struct snd_pcm_hw_constraint_list constraints_48000 = {
85 .count = ARRAY_SIZE(rates_48000),
86 .list = rates_48000,
87};
88
89static int aif1_startup(struct snd_pcm_substream *substream)
90{
91 return snd_pcm_hw_constraint_list(substream->runtime, 0,
92 SNDRV_PCM_HW_PARAM_RATE,
93 &constraints_48000);
94}
95
96static const struct snd_soc_ops aif1_ops = {
97 .startup = aif1_startup,
98};
99
100SND_SOC_DAILINK_DEF(dummy,
101 DAILINK_COMP_ARRAY(COMP_DUMMY()));
102
103SND_SOC_DAILINK_DEF(media,
104 DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
105
106SND_SOC_DAILINK_DEF(deepbuffer,
107 DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
108
109SND_SOC_DAILINK_DEF(ssp2_port,
110 DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
111
112SND_SOC_DAILINK_DEF(platform,
113 DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
114
115static struct snd_soc_dai_link dais[] = {
116 [MERR_DPCM_AUDIO] = {
117 .name = "Audio Port",
118 .stream_name = "Audio",
119 .ignore_suspend = 1,
120 .nonatomic = true,
121 .dynamic = 1,
122 .ops = &aif1_ops,
123 SND_SOC_DAILINK_REG(media, dummy, platform),
124 },
125 [MERR_DPCM_DEEP_BUFFER] = {
126 .name = "Deep-Buffer Audio Port",
127 .stream_name = "Deep-Buffer Audio",
128 .ignore_suspend = 1,
129 .nonatomic = true,
130 .dynamic = 1,
131 .playback_only = 1,
132 .ops = &aif1_ops,
133 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
134 },
135 /* CODEC<->CODEC link */
136 /* back ends */
137 {
138 .name = "SSP2-LowSpeed Connector",
139 .id = 0,
140 .no_pcm = 1,
141 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
142 | SND_SOC_DAIFMT_CBC_CFC,
143 .be_hw_params_fixup = codec_fixup,
144 .ignore_suspend = 1,
145 SND_SOC_DAILINK_REG(ssp2_port, dummy, platform),
146 },
147};
148
149/* SoC card */
150static struct snd_soc_card bytcht_nocodec_card = {
151 .name = "bytcht-nocodec",
152 .owner = THIS_MODULE,
153 .dai_link = dais,
154 .num_links = ARRAY_SIZE(dais),
155 .dapm_widgets = widgets,
156 .num_dapm_widgets = ARRAY_SIZE(widgets),
157 .dapm_routes = audio_map,
158 .num_dapm_routes = ARRAY_SIZE(audio_map),
159 .controls = controls,
160 .num_controls = ARRAY_SIZE(controls),
161 .fully_routed = true,
162};
163
164static int snd_bytcht_nocodec_mc_probe(struct platform_device *pdev)
165{
166 int ret_val = 0;
167
168 /* register the soc card */
169 bytcht_nocodec_card.dev = &pdev->dev;
170
171 ret_val = devm_snd_soc_register_card(&pdev->dev, &bytcht_nocodec_card);
172
173 if (ret_val) {
174 dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n",
175 ret_val);
176 return ret_val;
177 }
178 platform_set_drvdata(pdev, &bytcht_nocodec_card);
179 return ret_val;
180}
181
182static struct platform_driver snd_bytcht_nocodec_mc_driver = {
183 .driver = {
184 .name = "bytcht_nocodec",
185 },
186 .probe = snd_bytcht_nocodec_mc_probe,
187};
188module_platform_driver(snd_bytcht_nocodec_mc_driver);
189
190MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Nocodec Machine driver");
191MODULE_AUTHOR("Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>");
192MODULE_LICENSE("GPL v2");
193MODULE_ALIAS("platform:bytcht_nocodec");
1/*
2 * bytcht_nocodec.c - ASoc Machine driver for MinnowBoard Max and Up
3 * to make I2S signals observable on the Low-Speed connector. Audio codec
4 * is not managed by ASoC/DAPM
5 *
6 * Copyright (C) 2015-2017 Intel Corp
7 *
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2 of the License.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 */
21
22#include <linux/module.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include "../atom/sst-atom-controls.h"
27
28static const struct snd_soc_dapm_widget widgets[] = {
29 SND_SOC_DAPM_MIC("Mic", NULL),
30 SND_SOC_DAPM_SPK("Speaker", NULL),
31};
32
33static const struct snd_kcontrol_new controls[] = {
34 SOC_DAPM_PIN_SWITCH("Mic"),
35 SOC_DAPM_PIN_SWITCH("Speaker"),
36};
37
38static const struct snd_soc_dapm_route audio_map[] = {
39 {"ssp2 Tx", NULL, "codec_out0"},
40 {"ssp2 Tx", NULL, "codec_out1"},
41 {"codec_in0", NULL, "ssp2 Rx"},
42 {"codec_in1", NULL, "ssp2 Rx"},
43
44 {"ssp2 Rx", NULL, "Mic"},
45 {"Speaker", NULL, "ssp2 Tx"},
46};
47
48static int codec_fixup(struct snd_soc_pcm_runtime *rtd,
49 struct snd_pcm_hw_params *params)
50{
51 struct snd_interval *rate = hw_param_interval(params,
52 SNDRV_PCM_HW_PARAM_RATE);
53 struct snd_interval *channels = hw_param_interval(params,
54 SNDRV_PCM_HW_PARAM_CHANNELS);
55 int ret;
56
57 /* The DSP will convert the FE rate to 48k, stereo, 24bits */
58 rate->min = rate->max = 48000;
59 channels->min = channels->max = 2;
60
61 /* set SSP2 to 24-bit */
62 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
63
64 /*
65 * Default mode for SSP configuration is TDM 4 slot, override config
66 * with explicit setting to I2S 2ch 24-bit. The word length is set with
67 * dai_set_tdm_slot() since there is no other API exposed
68 */
69 ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
70 SND_SOC_DAIFMT_I2S |
71 SND_SOC_DAIFMT_NB_NF |
72 SND_SOC_DAIFMT_CBS_CFS);
73
74 if (ret < 0) {
75 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
76 return ret;
77 }
78
79 ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24);
80 if (ret < 0) {
81 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
82 return ret;
83 }
84
85 return 0;
86}
87
88static const unsigned int rates_48000[] = {
89 48000,
90};
91
92static const struct snd_pcm_hw_constraint_list constraints_48000 = {
93 .count = ARRAY_SIZE(rates_48000),
94 .list = rates_48000,
95};
96
97static int aif1_startup(struct snd_pcm_substream *substream)
98{
99 return snd_pcm_hw_constraint_list(substream->runtime, 0,
100 SNDRV_PCM_HW_PARAM_RATE,
101 &constraints_48000);
102}
103
104static struct snd_soc_ops aif1_ops = {
105 .startup = aif1_startup,
106};
107
108static struct snd_soc_dai_link dais[] = {
109 [MERR_DPCM_AUDIO] = {
110 .name = "Audio Port",
111 .stream_name = "Audio",
112 .cpu_dai_name = "media-cpu-dai",
113 .codec_dai_name = "snd-soc-dummy-dai",
114 .codec_name = "snd-soc-dummy",
115 .platform_name = "sst-mfld-platform",
116 .ignore_suspend = 1,
117 .nonatomic = true,
118 .dynamic = 1,
119 .dpcm_playback = 1,
120 .dpcm_capture = 1,
121 .ops = &aif1_ops,
122 },
123 [MERR_DPCM_DEEP_BUFFER] = {
124 .name = "Deep-Buffer Audio Port",
125 .stream_name = "Deep-Buffer Audio",
126 .cpu_dai_name = "deepbuffer-cpu-dai",
127 .codec_dai_name = "snd-soc-dummy-dai",
128 .codec_name = "snd-soc-dummy",
129 .platform_name = "sst-mfld-platform",
130 .ignore_suspend = 1,
131 .nonatomic = true,
132 .dynamic = 1,
133 .dpcm_playback = 1,
134 .ops = &aif1_ops,
135 },
136 /* CODEC<->CODEC link */
137 /* back ends */
138 {
139 .name = "SSP2-LowSpeed Connector",
140 .id = 0,
141 .cpu_dai_name = "ssp2-port",
142 .platform_name = "sst-mfld-platform",
143 .no_pcm = 1,
144 .codec_dai_name = "snd-soc-dummy-dai",
145 .codec_name = "snd-soc-dummy",
146 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
147 | SND_SOC_DAIFMT_CBS_CFS,
148 .be_hw_params_fixup = codec_fixup,
149 .ignore_suspend = 1,
150 .nonatomic = true,
151 .dpcm_playback = 1,
152 .dpcm_capture = 1,
153 },
154};
155
156/* SoC card */
157static struct snd_soc_card bytcht_nocodec_card = {
158 .name = "bytcht-nocodec",
159 .owner = THIS_MODULE,
160 .dai_link = dais,
161 .num_links = ARRAY_SIZE(dais),
162 .dapm_widgets = widgets,
163 .num_dapm_widgets = ARRAY_SIZE(widgets),
164 .dapm_routes = audio_map,
165 .num_dapm_routes = ARRAY_SIZE(audio_map),
166 .controls = controls,
167 .num_controls = ARRAY_SIZE(controls),
168 .fully_routed = true,
169};
170
171static int snd_bytcht_nocodec_mc_probe(struct platform_device *pdev)
172{
173 int ret_val = 0;
174
175 /* register the soc card */
176 bytcht_nocodec_card.dev = &pdev->dev;
177
178 ret_val = devm_snd_soc_register_card(&pdev->dev, &bytcht_nocodec_card);
179
180 if (ret_val) {
181 dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n",
182 ret_val);
183 return ret_val;
184 }
185 platform_set_drvdata(pdev, &bytcht_nocodec_card);
186 return ret_val;
187}
188
189static struct platform_driver snd_bytcht_nocodec_mc_driver = {
190 .driver = {
191 .name = "bytcht_nocodec",
192 },
193 .probe = snd_bytcht_nocodec_mc_probe,
194};
195module_platform_driver(snd_bytcht_nocodec_mc_driver);
196
197MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Nocodec Machine driver");
198MODULE_AUTHOR("Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>");
199MODULE_LICENSE("GPL v2");
200MODULE_ALIAS("platform:bytcht_nocodec");