]>
Commit | Line | Data |
---|---|---|
06d7c133 AS |
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 | ||
330345eb AS |
20 | #include <linux/module.h> |
21 | #include <linux/slab.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/soc.h> | |
25 | #include <sound/initval.h> | |
26 | ||
27 | #include <linux/i2c.h> | |
28 | ||
29 | #include <linux/mfd/si476x-core.h> | |
30 | ||
31 | enum si476x_audio_registers { | |
32 | SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203, | |
33 | SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202, | |
34 | }; | |
35 | ||
36 | enum si476x_digital_io_output_format { | |
37 | SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11, | |
38 | SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8, | |
39 | }; | |
40 | ||
3b1f9f53 AM |
41 | #define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \ |
42 | (0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT)) | |
43 | #define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0x7e) | |
330345eb AS |
44 | |
45 | enum si476x_daudio_formats { | |
46 | SI476X_DAUDIO_MODE_I2S = (0x0 << 1), | |
47 | SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1), | |
48 | SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1), | |
49 | SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1), | |
50 | SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1), | |
51 | ||
52 | SI476X_DAUDIO_MODE_IB = (1 << 5), | |
53 | SI476X_DAUDIO_MODE_IF = (1 << 6), | |
54 | }; | |
55 | ||
56 | enum si476x_pcm_format { | |
57 | SI476X_PCM_FORMAT_S8 = 2, | |
58 | SI476X_PCM_FORMAT_S16_LE = 4, | |
59 | SI476X_PCM_FORMAT_S20_3LE = 5, | |
60 | SI476X_PCM_FORMAT_S24_LE = 6, | |
61 | }; | |
62 | ||
ac0b82b1 MB |
63 | static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = { |
64 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
65 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
66 | }; | |
67 | ||
68 | static const struct snd_soc_dapm_route si476x_dapm_routes[] = { | |
69 | { "Capture", NULL, "LOUT" }, | |
70 | { "Capture", NULL, "ROUT" }, | |
71 | }; | |
72 | ||
330345eb AS |
73 | static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai, |
74 | unsigned int fmt) | |
75 | { | |
cfcff69a | 76 | struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev); |
330345eb AS |
77 | int err; |
78 | u16 format = 0; | |
79 | ||
80 | if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) | |
81 | return -EINVAL; | |
82 | ||
83 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
84 | case SND_SOC_DAIFMT_DSP_A: | |
85 | format |= SI476X_DAUDIO_MODE_DSP_A; | |
86 | break; | |
87 | case SND_SOC_DAIFMT_DSP_B: | |
88 | format |= SI476X_DAUDIO_MODE_DSP_B; | |
89 | break; | |
90 | case SND_SOC_DAIFMT_I2S: | |
91 | format |= SI476X_DAUDIO_MODE_I2S; | |
92 | break; | |
93 | case SND_SOC_DAIFMT_RIGHT_J: | |
94 | format |= SI476X_DAUDIO_MODE_RIGHT_J; | |
95 | break; | |
96 | case SND_SOC_DAIFMT_LEFT_J: | |
97 | format |= SI476X_DAUDIO_MODE_LEFT_J; | |
98 | break; | |
99 | default: | |
100 | return -EINVAL; | |
101 | } | |
102 | ||
103 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
104 | case SND_SOC_DAIFMT_DSP_A: | |
105 | case SND_SOC_DAIFMT_DSP_B: | |
106 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
107 | case SND_SOC_DAIFMT_NB_NF: | |
108 | break; | |
109 | case SND_SOC_DAIFMT_IB_NF: | |
110 | format |= SI476X_DAUDIO_MODE_IB; | |
111 | break; | |
112 | default: | |
113 | return -EINVAL; | |
114 | } | |
115 | break; | |
116 | case SND_SOC_DAIFMT_I2S: | |
117 | case SND_SOC_DAIFMT_RIGHT_J: | |
118 | case SND_SOC_DAIFMT_LEFT_J: | |
119 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
120 | case SND_SOC_DAIFMT_NB_NF: | |
121 | break; | |
122 | case SND_SOC_DAIFMT_IB_IF: | |
123 | format |= SI476X_DAUDIO_MODE_IB | | |
124 | SI476X_DAUDIO_MODE_IF; | |
125 | break; | |
126 | case SND_SOC_DAIFMT_IB_NF: | |
127 | format |= SI476X_DAUDIO_MODE_IB; | |
128 | break; | |
129 | case SND_SOC_DAIFMT_NB_IF: | |
130 | format |= SI476X_DAUDIO_MODE_IF; | |
131 | break; | |
132 | default: | |
133 | return -EINVAL; | |
134 | } | |
135 | break; | |
136 | default: | |
137 | return -EINVAL; | |
138 | } | |
139 | ||
cfcff69a MB |
140 | si476x_core_lock(core); |
141 | ||
330345eb AS |
142 | err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT, |
143 | SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK, | |
144 | format); | |
cfcff69a MB |
145 | |
146 | si476x_core_unlock(core); | |
147 | ||
330345eb AS |
148 | if (err < 0) { |
149 | dev_err(codec_dai->codec->dev, "Failed to set output format\n"); | |
150 | return err; | |
151 | } | |
06d7c133 | 152 | |
330345eb AS |
153 | return 0; |
154 | } | |
155 | ||
156 | static int si476x_codec_hw_params(struct snd_pcm_substream *substream, | |
157 | struct snd_pcm_hw_params *params, | |
158 | struct snd_soc_dai *dai) | |
159 | { | |
cfcff69a | 160 | struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev); |
330345eb AS |
161 | int rate, width, err; |
162 | ||
163 | rate = params_rate(params); | |
164 | if (rate < 32000 || rate > 48000) { | |
165 | dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate); | |
166 | return -EINVAL; | |
167 | } | |
168 | ||
169 | switch (params_format(params)) { | |
170 | case SNDRV_PCM_FORMAT_S8: | |
171 | width = SI476X_PCM_FORMAT_S8; | |
4e38b745 | 172 | break; |
330345eb AS |
173 | case SNDRV_PCM_FORMAT_S16_LE: |
174 | width = SI476X_PCM_FORMAT_S16_LE; | |
175 | break; | |
176 | case SNDRV_PCM_FORMAT_S20_3LE: | |
177 | width = SI476X_PCM_FORMAT_S20_3LE; | |
178 | break; | |
179 | case SNDRV_PCM_FORMAT_S24_LE: | |
180 | width = SI476X_PCM_FORMAT_S24_LE; | |
181 | break; | |
182 | default: | |
183 | return -EINVAL; | |
184 | } | |
185 | ||
cfcff69a MB |
186 | si476x_core_lock(core); |
187 | ||
330345eb AS |
188 | err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE, |
189 | rate); | |
190 | if (err < 0) { | |
191 | dev_err(dai->codec->dev, "Failed to set sample rate\n"); | |
cfcff69a | 192 | goto out; |
330345eb AS |
193 | } |
194 | ||
195 | err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT, | |
196 | SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK, | |
06d7c133 | 197 | (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | |
330345eb AS |
198 | (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT)); |
199 | if (err < 0) { | |
200 | dev_err(dai->codec->dev, "Failed to set output width\n"); | |
cfcff69a | 201 | goto out; |
330345eb AS |
202 | } |
203 | ||
cfcff69a MB |
204 | out: |
205 | si476x_core_unlock(core); | |
206 | ||
207 | return err; | |
330345eb AS |
208 | } |
209 | ||
210 | static int si476x_codec_probe(struct snd_soc_codec *codec) | |
211 | { | |
d6173df3 | 212 | codec->control_data = dev_get_regmap(codec->dev->parent, NULL); |
330345eb AS |
213 | return 0; |
214 | } | |
215 | ||
216 | static struct snd_soc_dai_ops si476x_dai_ops = { | |
217 | .hw_params = si476x_codec_hw_params, | |
218 | .set_fmt = si476x_codec_set_dai_fmt, | |
219 | }; | |
220 | ||
221 | static struct snd_soc_dai_driver si476x_dai = { | |
222 | .name = "si476x-codec", | |
223 | .capture = { | |
224 | .stream_name = "Capture", | |
225 | .channels_min = 2, | |
226 | .channels_max = 2, | |
227 | ||
228 | .rates = SNDRV_PCM_RATE_32000 | | |
229 | SNDRV_PCM_RATE_44100 | | |
230 | SNDRV_PCM_RATE_48000, | |
231 | .formats = SNDRV_PCM_FMTBIT_S8 | | |
232 | SNDRV_PCM_FMTBIT_S16_LE | | |
233 | SNDRV_PCM_FMTBIT_S20_3LE | | |
234 | SNDRV_PCM_FMTBIT_S24_LE | |
235 | }, | |
236 | .ops = &si476x_dai_ops, | |
237 | }; | |
238 | ||
239 | static struct snd_soc_codec_driver soc_codec_dev_si476x = { | |
240 | .probe = si476x_codec_probe, | |
ac0b82b1 MB |
241 | .dapm_widgets = si476x_dapm_widgets, |
242 | .num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets), | |
243 | .dapm_routes = si476x_dapm_routes, | |
244 | .num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes), | |
330345eb AS |
245 | }; |
246 | ||
7a79e94e | 247 | static int si476x_platform_probe(struct platform_device *pdev) |
330345eb AS |
248 | { |
249 | return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x, | |
250 | &si476x_dai, 1); | |
251 | } | |
252 | ||
7a79e94e | 253 | static int si476x_platform_remove(struct platform_device *pdev) |
330345eb AS |
254 | { |
255 | snd_soc_unregister_codec(&pdev->dev); | |
256 | return 0; | |
257 | } | |
258 | ||
259 | MODULE_ALIAS("platform:si476x-codec"); | |
260 | ||
261 | static struct platform_driver si476x_platform_driver = { | |
262 | .driver = { | |
263 | .name = "si476x-codec", | |
264 | .owner = THIS_MODULE, | |
265 | }, | |
266 | .probe = si476x_platform_probe, | |
7a79e94e | 267 | .remove = si476x_platform_remove, |
330345eb AS |
268 | }; |
269 | module_platform_driver(si476x_platform_driver); | |
270 | ||
06d7c133 | 271 | MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>"); |
330345eb AS |
272 | MODULE_DESCRIPTION("ASoC Si4761/64 codec driver"); |
273 | MODULE_LICENSE("GPL"); |