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(c: component); |
29 | int fs; |
30 | int i2s_set = 0; |
31 | |
32 | switch (params_rate(p: 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(p: 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 | val: i2s_set << TFA9879_I2S_SET_SHIFT); |
89 | |
90 | snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1, |
91 | TFA9879_I2S_FS_MASK, |
92 | val: fs << TFA9879_I2S_FS_SHIFT); |
93 | return 0; |
94 | } |
95 | |
96 | static int tfa9879_mute_stream(struct snd_soc_dai *dai, int mute, int direction) |
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 | val: !!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(c: component); |
111 | int i2s_set; |
112 | int sck_pol; |
113 | |
114 | switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { |
115 | case SND_SOC_DAIFMT_CBC_CFC: |
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 | val: sck_pol << TFA9879_SCK_POL_SHIFT); |
152 | snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1, |
153 | TFA9879_I2S_SET_MASK, |
154 | val: 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 | }; |
239 | |
240 | static const struct regmap_config tfa9879_regmap = { |
241 | .reg_bits = 8, |
242 | .val_bits = 16, |
243 | |
244 | .volatile_reg = tfa9879_volatile_reg, |
245 | .max_register = TFA9879_MISC_STATUS, |
246 | .reg_defaults = tfa9879_regs, |
247 | .num_reg_defaults = ARRAY_SIZE(tfa9879_regs), |
248 | .cache_type = REGCACHE_RBTREE, |
249 | }; |
250 | |
251 | static const struct snd_soc_dai_ops tfa9879_dai_ops = { |
252 | .hw_params = tfa9879_hw_params, |
253 | .mute_stream = tfa9879_mute_stream, |
254 | .set_fmt = tfa9879_set_fmt, |
255 | .no_capture_mute = 1, |
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(dev: &i2c->dev, size: sizeof(*tfa9879), GFP_KERNEL); |
280 | if (!tfa9879) |
281 | return -ENOMEM; |
282 | |
283 | i2c_set_clientdata(client: i2c, data: tfa9879); |
284 | |
285 | tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap); |
286 | if (IS_ERR(ptr: tfa9879->regmap)) |
287 | return PTR_ERR(ptr: tfa9879->regmap); |
288 | |
289 | /* Ensure the device is in reset state */ |
290 | for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++) |
291 | regmap_write(map: tfa9879->regmap, |
292 | reg: tfa9879_regs[i].reg, val: tfa9879_regs[i].def); |
293 | |
294 | return devm_snd_soc_register_component(dev: &i2c->dev, component_driver: &tfa9879_component, |
295 | dai_drv: &tfa9879_dai, num_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 = 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 | |