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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * sound/soc/codecs/si476x.c -- Codec driver for SI476X chips
4 *
5 * Copyright (C) 2012 Innovative Converged Devices(ICD)
6 * Copyright (C) 2013 Andrey Smirnov
7 *
8 * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
9 */
10
11#include <linux/module.h>
12#include <linux/slab.h>
13#include <sound/pcm.h>
14#include <sound/pcm_params.h>
15#include <linux/regmap.h>
16#include <sound/soc.h>
17#include <sound/initval.h>
18
19#include <linux/i2c.h>
20
21#include <linux/mfd/si476x-core.h>
22
23enum si476x_audio_registers {
24 SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
25 SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
26};
27
28enum si476x_digital_io_output_format {
29 SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11,
30 SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8,
31};
32
33#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \
34 (0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
35#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0x7e)
36
37enum si476x_daudio_formats {
38 SI476X_DAUDIO_MODE_I2S = (0x0 << 1),
39 SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1),
40 SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1),
41 SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1),
42 SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1),
43
44 SI476X_DAUDIO_MODE_IB = (1 << 5),
45 SI476X_DAUDIO_MODE_IF = (1 << 6),
46};
47
48enum si476x_pcm_format {
49 SI476X_PCM_FORMAT_S8 = 2,
50 SI476X_PCM_FORMAT_S16_LE = 4,
51 SI476X_PCM_FORMAT_S20_3LE = 5,
52 SI476X_PCM_FORMAT_S24_LE = 6,
53};
54
55static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = {
56SND_SOC_DAPM_OUTPUT("LOUT"),
57SND_SOC_DAPM_OUTPUT("ROUT"),
58};
59
60static const struct snd_soc_dapm_route si476x_dapm_routes[] = {
61 { "Capture", NULL, "LOUT" },
62 { "Capture", NULL, "ROUT" },
63};
64
65static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
66 unsigned int fmt)
67{
68 struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev);
69 int err;
70 u16 format = 0;
71
72 if ((fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC)
73 return -EINVAL;
74
75 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
76 case SND_SOC_DAIFMT_DSP_A:
77 format |= SI476X_DAUDIO_MODE_DSP_A;
78 break;
79 case SND_SOC_DAIFMT_DSP_B:
80 format |= SI476X_DAUDIO_MODE_DSP_B;
81 break;
82 case SND_SOC_DAIFMT_I2S:
83 format |= SI476X_DAUDIO_MODE_I2S;
84 break;
85 case SND_SOC_DAIFMT_RIGHT_J:
86 format |= SI476X_DAUDIO_MODE_RIGHT_J;
87 break;
88 case SND_SOC_DAIFMT_LEFT_J:
89 format |= SI476X_DAUDIO_MODE_LEFT_J;
90 break;
91 default:
92 return -EINVAL;
93 }
94
95 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
96 case SND_SOC_DAIFMT_DSP_A:
97 case SND_SOC_DAIFMT_DSP_B:
98 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
99 case SND_SOC_DAIFMT_NB_NF:
100 break;
101 case SND_SOC_DAIFMT_IB_NF:
102 format |= SI476X_DAUDIO_MODE_IB;
103 break;
104 default:
105 return -EINVAL;
106 }
107 break;
108 case SND_SOC_DAIFMT_I2S:
109 case SND_SOC_DAIFMT_RIGHT_J:
110 case SND_SOC_DAIFMT_LEFT_J:
111 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
112 case SND_SOC_DAIFMT_NB_NF:
113 break;
114 case SND_SOC_DAIFMT_IB_IF:
115 format |= SI476X_DAUDIO_MODE_IB |
116 SI476X_DAUDIO_MODE_IF;
117 break;
118 case SND_SOC_DAIFMT_IB_NF:
119 format |= SI476X_DAUDIO_MODE_IB;
120 break;
121 case SND_SOC_DAIFMT_NB_IF:
122 format |= SI476X_DAUDIO_MODE_IF;
123 break;
124 default:
125 return -EINVAL;
126 }
127 break;
128 default:
129 return -EINVAL;
130 }
131
132 si476x_core_lock(core);
133
134 err = snd_soc_component_update_bits(codec_dai->component, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
135 SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
136 format);
137
138 si476x_core_unlock(core);
139
140 if (err < 0) {
141 dev_err(codec_dai->component->dev, "Failed to set output format\n");
142 return err;
143 }
144
145 return 0;
146}
147
148static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
149 struct snd_pcm_hw_params *params,
150 struct snd_soc_dai *dai)
151{
152 struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev);
153 int rate, width, err;
154
155 rate = params_rate(params);
156 if (rate < 32000 || rate > 48000) {
157 dev_err(dai->component->dev, "Rate: %d is not supported\n", rate);
158 return -EINVAL;
159 }
160
161 switch (params_width(params)) {
162 case 8:
163 width = SI476X_PCM_FORMAT_S8;
164 break;
165 case 16:
166 width = SI476X_PCM_FORMAT_S16_LE;
167 break;
168 case 20:
169 width = SI476X_PCM_FORMAT_S20_3LE;
170 break;
171 case 24:
172 width = SI476X_PCM_FORMAT_S24_LE;
173 break;
174 default:
175 return -EINVAL;
176 }
177
178 si476x_core_lock(core);
179
180 err = snd_soc_component_write(dai->component, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
181 rate);
182 if (err < 0) {
183 dev_err(dai->component->dev, "Failed to set sample rate\n");
184 goto out;
185 }
186
187 err = snd_soc_component_update_bits(dai->component, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
188 SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
189 (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) |
190 (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
191 if (err < 0) {
192 dev_err(dai->component->dev, "Failed to set output width\n");
193 goto out;
194 }
195
196out:
197 si476x_core_unlock(core);
198
199 return err;
200}
201
202static const struct snd_soc_dai_ops si476x_dai_ops = {
203 .hw_params = si476x_codec_hw_params,
204 .set_fmt = si476x_codec_set_dai_fmt,
205};
206
207static struct snd_soc_dai_driver si476x_dai = {
208 .name = "si476x-codec",
209 .capture = {
210 .stream_name = "Capture",
211 .channels_min = 2,
212 .channels_max = 2,
213
214 .rates = SNDRV_PCM_RATE_32000 |
215 SNDRV_PCM_RATE_44100 |
216 SNDRV_PCM_RATE_48000,
217 .formats = SNDRV_PCM_FMTBIT_S8 |
218 SNDRV_PCM_FMTBIT_S16_LE |
219 SNDRV_PCM_FMTBIT_S20_3LE |
220 SNDRV_PCM_FMTBIT_S24_LE
221 },
222 .ops = &si476x_dai_ops,
223};
224
225static int si476x_probe(struct snd_soc_component *component)
226{
227 snd_soc_component_init_regmap(component,
228 dev_get_regmap(component->dev->parent, NULL));
229
230 return 0;
231}
232
233static const struct snd_soc_component_driver soc_component_dev_si476x = {
234 .probe = si476x_probe,
235 .dapm_widgets = si476x_dapm_widgets,
236 .num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets),
237 .dapm_routes = si476x_dapm_routes,
238 .num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes),
239 .idle_bias_on = 1,
240 .use_pmdown_time = 1,
241 .endianness = 1,
242};
243
244static int si476x_platform_probe(struct platform_device *pdev)
245{
246 return devm_snd_soc_register_component(&pdev->dev,
247 &soc_component_dev_si476x,
248 &si476x_dai, 1);
249}
250
251MODULE_ALIAS("platform:si476x-codec");
252
253static struct platform_driver si476x_platform_driver = {
254 .driver = {
255 .name = "si476x-codec",
256 },
257 .probe = si476x_platform_probe,
258};
259module_platform_driver(si476x_platform_driver);
260
261MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
262MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
263MODULE_LICENSE("GPL");
1/*
2 * sound/soc/codecs/si476x.c -- Codec driver for SI476X chips
3 *
4 * Copyright (C) 2012 Innovative Converged Devices(ICD)
5 * Copyright (C) 2013 Andrey Smirnov
6 *
7 * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 */
19
20#include <linux/module.h>
21#include <linux/slab.h>
22#include <sound/pcm.h>
23#include <sound/pcm_params.h>
24#include <linux/regmap.h>
25#include <sound/soc.h>
26#include <sound/initval.h>
27
28#include <linux/i2c.h>
29
30#include <linux/mfd/si476x-core.h>
31
32enum si476x_audio_registers {
33 SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
34 SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
35};
36
37enum si476x_digital_io_output_format {
38 SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11,
39 SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8,
40};
41
42#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \
43 (0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
44#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0x7e)
45
46enum si476x_daudio_formats {
47 SI476X_DAUDIO_MODE_I2S = (0x0 << 1),
48 SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1),
49 SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1),
50 SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1),
51 SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1),
52
53 SI476X_DAUDIO_MODE_IB = (1 << 5),
54 SI476X_DAUDIO_MODE_IF = (1 << 6),
55};
56
57enum si476x_pcm_format {
58 SI476X_PCM_FORMAT_S8 = 2,
59 SI476X_PCM_FORMAT_S16_LE = 4,
60 SI476X_PCM_FORMAT_S20_3LE = 5,
61 SI476X_PCM_FORMAT_S24_LE = 6,
62};
63
64static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = {
65SND_SOC_DAPM_OUTPUT("LOUT"),
66SND_SOC_DAPM_OUTPUT("ROUT"),
67};
68
69static const struct snd_soc_dapm_route si476x_dapm_routes[] = {
70 { "Capture", NULL, "LOUT" },
71 { "Capture", NULL, "ROUT" },
72};
73
74static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
75 unsigned int fmt)
76{
77 struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev);
78 int err;
79 u16 format = 0;
80
81 if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
82 return -EINVAL;
83
84 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
85 case SND_SOC_DAIFMT_DSP_A:
86 format |= SI476X_DAUDIO_MODE_DSP_A;
87 break;
88 case SND_SOC_DAIFMT_DSP_B:
89 format |= SI476X_DAUDIO_MODE_DSP_B;
90 break;
91 case SND_SOC_DAIFMT_I2S:
92 format |= SI476X_DAUDIO_MODE_I2S;
93 break;
94 case SND_SOC_DAIFMT_RIGHT_J:
95 format |= SI476X_DAUDIO_MODE_RIGHT_J;
96 break;
97 case SND_SOC_DAIFMT_LEFT_J:
98 format |= SI476X_DAUDIO_MODE_LEFT_J;
99 break;
100 default:
101 return -EINVAL;
102 }
103
104 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
105 case SND_SOC_DAIFMT_DSP_A:
106 case SND_SOC_DAIFMT_DSP_B:
107 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
108 case SND_SOC_DAIFMT_NB_NF:
109 break;
110 case SND_SOC_DAIFMT_IB_NF:
111 format |= SI476X_DAUDIO_MODE_IB;
112 break;
113 default:
114 return -EINVAL;
115 }
116 break;
117 case SND_SOC_DAIFMT_I2S:
118 case SND_SOC_DAIFMT_RIGHT_J:
119 case SND_SOC_DAIFMT_LEFT_J:
120 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
121 case SND_SOC_DAIFMT_NB_NF:
122 break;
123 case SND_SOC_DAIFMT_IB_IF:
124 format |= SI476X_DAUDIO_MODE_IB |
125 SI476X_DAUDIO_MODE_IF;
126 break;
127 case SND_SOC_DAIFMT_IB_NF:
128 format |= SI476X_DAUDIO_MODE_IB;
129 break;
130 case SND_SOC_DAIFMT_NB_IF:
131 format |= SI476X_DAUDIO_MODE_IF;
132 break;
133 default:
134 return -EINVAL;
135 }
136 break;
137 default:
138 return -EINVAL;
139 }
140
141 si476x_core_lock(core);
142
143 err = snd_soc_component_update_bits(codec_dai->component, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
144 SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
145 format);
146
147 si476x_core_unlock(core);
148
149 if (err < 0) {
150 dev_err(codec_dai->component->dev, "Failed to set output format\n");
151 return err;
152 }
153
154 return 0;
155}
156
157static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
158 struct snd_pcm_hw_params *params,
159 struct snd_soc_dai *dai)
160{
161 struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev);
162 int rate, width, err;
163
164 rate = params_rate(params);
165 if (rate < 32000 || rate > 48000) {
166 dev_err(dai->component->dev, "Rate: %d is not supported\n", rate);
167 return -EINVAL;
168 }
169
170 switch (params_width(params)) {
171 case 8:
172 width = SI476X_PCM_FORMAT_S8;
173 break;
174 case 16:
175 width = SI476X_PCM_FORMAT_S16_LE;
176 break;
177 case 20:
178 width = SI476X_PCM_FORMAT_S20_3LE;
179 break;
180 case 24:
181 width = SI476X_PCM_FORMAT_S24_LE;
182 break;
183 default:
184 return -EINVAL;
185 }
186
187 si476x_core_lock(core);
188
189 err = snd_soc_component_write(dai->component, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
190 rate);
191 if (err < 0) {
192 dev_err(dai->component->dev, "Failed to set sample rate\n");
193 goto out;
194 }
195
196 err = snd_soc_component_update_bits(dai->component, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
197 SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
198 (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) |
199 (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
200 if (err < 0) {
201 dev_err(dai->component->dev, "Failed to set output width\n");
202 goto out;
203 }
204
205out:
206 si476x_core_unlock(core);
207
208 return err;
209}
210
211static const struct snd_soc_dai_ops si476x_dai_ops = {
212 .hw_params = si476x_codec_hw_params,
213 .set_fmt = si476x_codec_set_dai_fmt,
214};
215
216static struct snd_soc_dai_driver si476x_dai = {
217 .name = "si476x-codec",
218 .capture = {
219 .stream_name = "Capture",
220 .channels_min = 2,
221 .channels_max = 2,
222
223 .rates = SNDRV_PCM_RATE_32000 |
224 SNDRV_PCM_RATE_44100 |
225 SNDRV_PCM_RATE_48000,
226 .formats = SNDRV_PCM_FMTBIT_S8 |
227 SNDRV_PCM_FMTBIT_S16_LE |
228 SNDRV_PCM_FMTBIT_S20_3LE |
229 SNDRV_PCM_FMTBIT_S24_LE
230 },
231 .ops = &si476x_dai_ops,
232};
233
234static int si476x_probe(struct snd_soc_component *component)
235{
236 snd_soc_component_init_regmap(component,
237 dev_get_regmap(component->dev->parent, NULL));
238
239 return 0;
240}
241
242static const struct snd_soc_component_driver soc_component_dev_si476x = {
243 .probe = si476x_probe,
244 .dapm_widgets = si476x_dapm_widgets,
245 .num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets),
246 .dapm_routes = si476x_dapm_routes,
247 .num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes),
248 .idle_bias_on = 1,
249 .use_pmdown_time = 1,
250 .endianness = 1,
251 .non_legacy_dai_naming = 1,
252};
253
254static int si476x_platform_probe(struct platform_device *pdev)
255{
256 return devm_snd_soc_register_component(&pdev->dev,
257 &soc_component_dev_si476x,
258 &si476x_dai, 1);
259}
260
261MODULE_ALIAS("platform:si476x-codec");
262
263static struct platform_driver si476x_platform_driver = {
264 .driver = {
265 .name = "si476x-codec",
266 },
267 .probe = si476x_platform_probe,
268};
269module_platform_driver(si476x_platform_driver);
270
271MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
272MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
273MODULE_LICENSE("GPL");