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
tfa9879_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)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
tfa9879_digital_mute(struct snd_soc_dai * dai,int mute)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
tfa9879_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)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
tfa9879_volatile_reg(struct device * dev,unsigned int reg)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
tfa9879_i2c_probe(struct i2c_client * i2c)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
