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Linux/sound/soc/codecs/tfa9879.c

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  1 // SPDX-License-Identifier: GPL-2.0+
  2 //
  3 // tfa9879.c  --  driver for NXP Semiconductors TFA9879
  4 //
  5 // Copyright (C) 2014 Axentia Technologies AB
  6 // Author: Peter Rosin <peda@axentia.se>
  7 
  8 #include <linux/module.h>
  9 #include <linux/init.h>
 10 #include <linux/i2c.h>
 11 #include <linux/regmap.h>
 12 #include <sound/soc.h>
 13 #include <sound/tlv.h>
 14 #include <sound/pcm_params.h>
 15 
 16 #include "tfa9879.h"
 17 
 18 struct tfa9879_priv {
 19         struct regmap *regmap;
 20         int lsb_justified;
 21 };
 22 
 23 static int tfa9879_hw_params(struct snd_pcm_substream *substream,
 24                              struct snd_pcm_hw_params *params,
 25                              struct snd_soc_dai *dai)
 26 {
 27         struct snd_soc_component *component = dai->component;
 28         struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
 29         int fs;
 30         int i2s_set = 0;
 31 
 32         switch (params_rate(params)) {
 33         case 8000:
 34                 fs = TFA9879_I2S_FS_8000;
 35                 break;
 36         case 11025:
 37                 fs = TFA9879_I2S_FS_11025;
 38                 break;
 39         case 12000:
 40                 fs = TFA9879_I2S_FS_12000;
 41                 break;
 42         case 16000:
 43                 fs = TFA9879_I2S_FS_16000;
 44                 break;
 45         case 22050:
 46                 fs = TFA9879_I2S_FS_22050;
 47                 break;
 48         case 24000:
 49                 fs = TFA9879_I2S_FS_24000;
 50                 break;
 51         case 32000:
 52                 fs = TFA9879_I2S_FS_32000;
 53                 break;
 54         case 44100:
 55                 fs = TFA9879_I2S_FS_44100;
 56                 break;
 57         case 48000:
 58                 fs = TFA9879_I2S_FS_48000;
 59                 break;
 60         case 64000:
 61                 fs = TFA9879_I2S_FS_64000;
 62                 break;
 63         case 88200:
 64                 fs = TFA9879_I2S_FS_88200;
 65                 break;
 66         case 96000:
 67                 fs = TFA9879_I2S_FS_96000;
 68                 break;
 69         default:
 70                 return -EINVAL;
 71         }
 72 
 73         switch (params_width(params)) {
 74         case 16:
 75                 i2s_set = TFA9879_I2S_SET_LSB_J_16;
 76                 break;
 77         case 24:
 78                 i2s_set = TFA9879_I2S_SET_LSB_J_24;
 79                 break;
 80         default:
 81                 return -EINVAL;
 82         }
 83 
 84         if (tfa9879->lsb_justified)
 85                 snd_soc_component_update_bits(component,
 86                                               TFA9879_SERIAL_INTERFACE_1,
 87                                               TFA9879_I2S_SET_MASK,
 88                                               i2s_set << TFA9879_I2S_SET_SHIFT);
 89 
 90         snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
 91                                       TFA9879_I2S_FS_MASK,
 92                                       fs << TFA9879_I2S_FS_SHIFT);
 93         return 0;
 94 }
 95 
 96 static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
 97 {
 98         struct snd_soc_component *component = dai->component;
 99 
100         snd_soc_component_update_bits(component, TFA9879_MISC_CONTROL,
101                                       TFA9879_S_MUTE_MASK,
102                                       !!mute << TFA9879_S_MUTE_SHIFT);
103 
104         return 0;
105 }
106 
107 static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
108 {
109         struct snd_soc_component *component = dai->component;
110         struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
111         int i2s_set;
112         int sck_pol;
113 
114         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
115         case SND_SOC_DAIFMT_CBS_CFS:
116                 break;
117         default:
118                 return -EINVAL;
119         }
120 
121         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
122         case SND_SOC_DAIFMT_NB_NF:
123                 sck_pol = TFA9879_SCK_POL_NORMAL;
124                 break;
125         case SND_SOC_DAIFMT_IB_NF:
126                 sck_pol = TFA9879_SCK_POL_INVERSE;
127                 break;
128         default:
129                 return -EINVAL;
130         }
131 
132         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
133         case SND_SOC_DAIFMT_I2S:
134                 tfa9879->lsb_justified = 0;
135                 i2s_set = TFA9879_I2S_SET_I2S_24;
136                 break;
137         case SND_SOC_DAIFMT_LEFT_J:
138                 tfa9879->lsb_justified = 0;
139                 i2s_set = TFA9879_I2S_SET_MSB_J_24;
140                 break;
141         case SND_SOC_DAIFMT_RIGHT_J:
142                 tfa9879->lsb_justified = 1;
143                 i2s_set = TFA9879_I2S_SET_LSB_J_24;
144                 break;
145         default:
146                 return -EINVAL;
147         }
148 
149         snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
150                                       TFA9879_SCK_POL_MASK,
151                                       sck_pol << TFA9879_SCK_POL_SHIFT);
152         snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
153                                       TFA9879_I2S_SET_MASK,
154                                       i2s_set << TFA9879_I2S_SET_SHIFT);
155         return 0;
156 }
157 
158 static const struct reg_default tfa9879_regs[] = {
159         { TFA9879_DEVICE_CONTROL,       0x0000 }, /* 0x00 */
160         { TFA9879_SERIAL_INTERFACE_1,   0x0a18 }, /* 0x01 */
161         { TFA9879_PCM_IOM2_FORMAT_1,    0x0007 }, /* 0x02 */
162         { TFA9879_SERIAL_INTERFACE_2,   0x0a18 }, /* 0x03 */
163         { TFA9879_PCM_IOM2_FORMAT_2,    0x0007 }, /* 0x04 */
164         { TFA9879_EQUALIZER_A1,         0x59dd }, /* 0x05 */
165         { TFA9879_EQUALIZER_A2,         0xc63e }, /* 0x06 */
166         { TFA9879_EQUALIZER_B1,         0x651a }, /* 0x07 */
167         { TFA9879_EQUALIZER_B2,         0xe53e }, /* 0x08 */
168         { TFA9879_EQUALIZER_C1,         0x4616 }, /* 0x09 */
169         { TFA9879_EQUALIZER_C2,         0xd33e }, /* 0x0a */
170         { TFA9879_EQUALIZER_D1,         0x4df3 }, /* 0x0b */
171         { TFA9879_EQUALIZER_D2,         0xea3e }, /* 0x0c */
172         { TFA9879_EQUALIZER_E1,         0x5ee0 }, /* 0x0d */
173         { TFA9879_EQUALIZER_E2,         0xf93e }, /* 0x0e */
174         { TFA9879_BYPASS_CONTROL,       0x0093 }, /* 0x0f */
175         { TFA9879_DYNAMIC_RANGE_COMPR,  0x92ba }, /* 0x10 */
176         { TFA9879_BASS_TREBLE,          0x12a5 }, /* 0x11 */
177         { TFA9879_HIGH_PASS_FILTER,     0x0004 }, /* 0x12 */
178         { TFA9879_VOLUME_CONTROL,       0x10bd }, /* 0x13 */
179         { TFA9879_MISC_CONTROL,         0x0000 }, /* 0x14 */
180 };
181 
182 static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
183 {
184         return reg == TFA9879_MISC_STATUS;
185 }
186 
187 static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
188 static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
189 static const char * const tb_freq_text[] = {
190         "Low", "Mid", "High"
191 };
192 static const struct soc_enum treble_freq_enum =
193         SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
194                         ARRAY_SIZE(tb_freq_text), tb_freq_text);
195 static const struct soc_enum bass_freq_enum =
196         SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
197                         ARRAY_SIZE(tb_freq_text), tb_freq_text);
198 
199 static const struct snd_kcontrol_new tfa9879_controls[] = {
200         SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
201                        TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
202         SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
203                        TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
204         SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
205                        TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
206         SOC_ENUM("Treble Corner Freq", treble_freq_enum),
207         SOC_ENUM("Bass Corner Freq", bass_freq_enum),
208 };
209 
210 static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
211 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
212 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
213 SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
214 SND_SOC_DAPM_OUTPUT("LINEOUT"),
215 SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
216                     NULL, 0),
217 };
218 
219 static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
220         { "DAC", NULL, "AIFINL" },
221         { "DAC", NULL, "AIFINR" },
222 
223         { "LINEOUT", NULL, "DAC" },
224 
225         { "DAC", NULL, "POWER" },
226 };
227 
228 static const struct snd_soc_component_driver tfa9879_component = {
229         .controls               = tfa9879_controls,
230         .num_controls           = ARRAY_SIZE(tfa9879_controls),
231         .dapm_widgets           = tfa9879_dapm_widgets,
232         .num_dapm_widgets       = ARRAY_SIZE(tfa9879_dapm_widgets),
233         .dapm_routes            = tfa9879_dapm_routes,
234         .num_dapm_routes        = ARRAY_SIZE(tfa9879_dapm_routes),
235         .idle_bias_on           = 1,
236         .use_pmdown_time        = 1,
237         .endianness             = 1,
238         .non_legacy_dai_naming  = 1,
239 };
240 
241 static const struct regmap_config tfa9879_regmap = {
242         .reg_bits = 8,
243         .val_bits = 16,
244 
245         .volatile_reg = tfa9879_volatile_reg,
246         .max_register = TFA9879_MISC_STATUS,
247         .reg_defaults = tfa9879_regs,
248         .num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
249         .cache_type = REGCACHE_RBTREE,
250 };
251 
252 static const struct snd_soc_dai_ops tfa9879_dai_ops = {
253         .hw_params = tfa9879_hw_params,
254         .digital_mute = tfa9879_digital_mute,
255         .set_fmt = tfa9879_set_fmt,
256 };
257 
258 #define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
259 
260 #define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
261                          SNDRV_PCM_FMTBIT_S24_LE)
262 
263 static struct snd_soc_dai_driver tfa9879_dai = {
264         .name = "tfa9879-hifi",
265         .playback = {
266                 .stream_name = "Playback",
267                 .channels_min = 2,
268                 .channels_max = 2,
269                 .rates = TFA9879_RATES,
270                 .formats = TFA9879_FORMATS, },
271         .ops = &tfa9879_dai_ops,
272 };
273 
274 static int tfa9879_i2c_probe(struct i2c_client *i2c)
275 {
276         struct tfa9879_priv *tfa9879;
277         int i;
278 
279         tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
280         if (!tfa9879)
281                 return -ENOMEM;
282 
283         i2c_set_clientdata(i2c, tfa9879);
284 
285         tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
286         if (IS_ERR(tfa9879->regmap))
287                 return PTR_ERR(tfa9879->regmap);
288 
289         /* Ensure the device is in reset state */
290         for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
291                 regmap_write(tfa9879->regmap,
292                              tfa9879_regs[i].reg, tfa9879_regs[i].def);
293 
294         return devm_snd_soc_register_component(&i2c->dev, &tfa9879_component,
295                                                &tfa9879_dai, 1);
296 }
297 
298 static const struct i2c_device_id tfa9879_i2c_id[] = {
299         { "tfa9879", 0 },
300         { }
301 };
302 MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
303 
304 static const struct of_device_id tfa9879_of_match[] = {
305         { .compatible = "nxp,tfa9879", },
306         { }
307 };
308 MODULE_DEVICE_TABLE(of, tfa9879_of_match);
309 
310 static struct i2c_driver tfa9879_i2c_driver = {
311         .driver = {
312                 .name = "tfa9879",
313                 .of_match_table = tfa9879_of_match,
314         },
315         .probe_new = tfa9879_i2c_probe,
316         .id_table = tfa9879_i2c_id,
317 };
318 
319 module_i2c_driver(tfa9879_i2c_driver);
320 
321 MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
322 MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
323 MODULE_LICENSE("GPL");
324 

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