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> | |
092eba93 | 24 | #include <linux/regmap.h> |
330345eb AS |
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 | ||
32 | enum si476x_audio_registers { | |
33 | SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203, | |
34 | SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202, | |
35 | }; | |
36 | ||
37 | enum si476x_digital_io_output_format { | |
38 | SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11, | |
39 | SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8, | |
40 | }; | |
41 | ||
3b1f9f53 AM |
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) | |
330345eb AS |
45 | |
46 | enum 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 | ||
57 | enum 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 | ||
ac0b82b1 MB |
64 | static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = { |
65 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
66 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
67 | }; | |
68 | ||
69 | static const struct snd_soc_dapm_route si476x_dapm_routes[] = { | |
70 | { "Capture", NULL, "LOUT" }, | |
71 | { "Capture", NULL, "ROUT" }, | |
72 | }; | |
73 | ||
330345eb AS |
74 | static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai, |
75 | unsigned int fmt) | |
76 | { | |
cfcff69a | 77 | struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev); |
330345eb AS |
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 | ||
cfcff69a MB |
141 | si476x_core_lock(core); |
142 | ||
330345eb AS |
143 | err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT, |
144 | SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK, | |
145 | format); | |
cfcff69a MB |
146 | |
147 | si476x_core_unlock(core); | |
148 | ||
330345eb AS |
149 | if (err < 0) { |
150 | dev_err(codec_dai->codec->dev, "Failed to set output format\n"); | |
151 | return err; | |
152 | } | |
06d7c133 | 153 | |
330345eb AS |
154 | return 0; |
155 | } | |
156 | ||
157 | static int si476x_codec_hw_params(struct snd_pcm_substream *substream, | |
158 | struct snd_pcm_hw_params *params, | |
159 | struct snd_soc_dai *dai) | |
160 | { | |
cfcff69a | 161 | struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev); |
330345eb AS |
162 | int rate, width, err; |
163 | ||
164 | rate = params_rate(params); | |
165 | if (rate < 32000 || rate > 48000) { | |
166 | dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate); | |
167 | return -EINVAL; | |
168 | } | |
169 | ||
0a49f706 MB |
170 | switch (params_width(params)) { |
171 | case 8: | |
330345eb | 172 | width = SI476X_PCM_FORMAT_S8; |
4e38b745 | 173 | break; |
0a49f706 | 174 | case 16: |
330345eb AS |
175 | width = SI476X_PCM_FORMAT_S16_LE; |
176 | break; | |
0a49f706 | 177 | case 20: |
330345eb AS |
178 | width = SI476X_PCM_FORMAT_S20_3LE; |
179 | break; | |
0a49f706 | 180 | case 24: |
330345eb AS |
181 | width = SI476X_PCM_FORMAT_S24_LE; |
182 | break; | |
183 | default: | |
184 | return -EINVAL; | |
185 | } | |
186 | ||
cfcff69a MB |
187 | si476x_core_lock(core); |
188 | ||
330345eb AS |
189 | err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE, |
190 | rate); | |
191 | if (err < 0) { | |
192 | dev_err(dai->codec->dev, "Failed to set sample rate\n"); | |
cfcff69a | 193 | goto out; |
330345eb AS |
194 | } |
195 | ||
196 | err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT, | |
197 | SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK, | |
06d7c133 | 198 | (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | |
330345eb AS |
199 | (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT)); |
200 | if (err < 0) { | |
201 | dev_err(dai->codec->dev, "Failed to set output width\n"); | |
cfcff69a | 202 | goto out; |
330345eb AS |
203 | } |
204 | ||
cfcff69a MB |
205 | out: |
206 | si476x_core_unlock(core); | |
207 | ||
208 | return err; | |
330345eb AS |
209 | } |
210 | ||
64793047 | 211 | static const struct snd_soc_dai_ops si476x_dai_ops = { |
330345eb AS |
212 | .hw_params = si476x_codec_hw_params, |
213 | .set_fmt = si476x_codec_set_dai_fmt, | |
214 | }; | |
215 | ||
216 | static 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 | ||
7a34b1c1 | 234 | static struct regmap *si476x_get_regmap(struct device *dev) |
83905ef3 XL |
235 | { |
236 | return dev_get_regmap(dev->parent, NULL); | |
237 | } | |
238 | ||
330345eb | 239 | static struct snd_soc_codec_driver soc_codec_dev_si476x = { |
83905ef3 | 240 | .get_regmap = si476x_get_regmap, |
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", | |
330345eb AS |
264 | }, |
265 | .probe = si476x_platform_probe, | |
7a79e94e | 266 | .remove = si476x_platform_remove, |
330345eb AS |
267 | }; |
268 | module_platform_driver(si476x_platform_driver); | |
269 | ||
06d7c133 | 270 | MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>"); |
330345eb AS |
271 | MODULE_DESCRIPTION("ASoC Si4761/64 codec driver"); |
272 | MODULE_LICENSE("GPL"); |