1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // Driver for the Texas Instruments TAS2780 Mono |
3 | // Audio amplifier |
4 | // Copyright (C) 2022 Texas Instruments Inc. |
5 | |
6 | #include <linux/module.h> |
7 | #include <linux/err.h> |
8 | #include <linux/pm.h> |
9 | #include <linux/i2c.h> |
10 | #include <linux/gpio.h> |
11 | #include <linux/gpio/consumer.h> |
12 | #include <linux/regmap.h> |
13 | #include <linux/of.h> |
14 | #include <linux/of_gpio.h> |
15 | #include <sound/soc.h> |
16 | #include <sound/pcm.h> |
17 | #include <sound/pcm_params.h> |
18 | #include <sound/tlv.h> |
19 | |
20 | #include "tas2780.h" |
21 | |
22 | struct tas2780_priv { |
23 | struct snd_soc_component *component; |
24 | struct gpio_desc *reset_gpio; |
25 | struct regmap *regmap; |
26 | struct device *dev; |
27 | int v_sense_slot; |
28 | int i_sense_slot; |
29 | }; |
30 | |
31 | static void tas2780_reset(struct tas2780_priv *tas2780) |
32 | { |
33 | int ret = 0; |
34 | |
35 | if (tas2780->reset_gpio) { |
36 | gpiod_set_value_cansleep(desc: tas2780->reset_gpio, value: 0); |
37 | usleep_range(min: 2000, max: 2050); |
38 | gpiod_set_value_cansleep(desc: tas2780->reset_gpio, value: 1); |
39 | usleep_range(min: 2000, max: 2050); |
40 | } |
41 | |
42 | ret = snd_soc_component_write(component: tas2780->component, TAS2780_SW_RST, |
43 | TAS2780_RST); |
44 | if (ret) |
45 | dev_err(tas2780->dev, "%s:errCode:0x%x Reset error!\n" , |
46 | __func__, ret); |
47 | } |
48 | |
49 | #ifdef CONFIG_PM |
50 | static int tas2780_codec_suspend(struct snd_soc_component *component) |
51 | { |
52 | struct tas2780_priv *tas2780 = |
53 | snd_soc_component_get_drvdata(c: component); |
54 | int ret = 0; |
55 | |
56 | ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL, |
57 | TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_SHUTDOWN); |
58 | if (ret < 0) { |
59 | dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n" , |
60 | __func__, ret); |
61 | goto err; |
62 | } |
63 | ret = 0; |
64 | regcache_cache_only(map: tas2780->regmap, enable: true); |
65 | regcache_mark_dirty(map: tas2780->regmap); |
66 | err: |
67 | return ret; |
68 | } |
69 | |
70 | static int tas2780_codec_resume(struct snd_soc_component *component) |
71 | { |
72 | struct tas2780_priv *tas2780 = |
73 | snd_soc_component_get_drvdata(c: component); |
74 | int ret = 0; |
75 | |
76 | ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL, |
77 | TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_ACTIVE); |
78 | |
79 | if (ret < 0) { |
80 | dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n" , |
81 | __func__, ret); |
82 | goto err; |
83 | } |
84 | ret = 0; |
85 | regcache_cache_only(map: tas2780->regmap, enable: false); |
86 | ret = regcache_sync(map: tas2780->regmap); |
87 | err: |
88 | return ret; |
89 | } |
90 | #endif |
91 | |
92 | static const char * const tas2780_ASI1_src[] = { |
93 | "I2C offset" , "Left" , "Right" , "LeftRightDiv2" , |
94 | }; |
95 | |
96 | static SOC_ENUM_SINGLE_DECL( |
97 | tas2780_ASI1_src_enum, TAS2780_TDM_CFG2, 4, tas2780_ASI1_src); |
98 | |
99 | static const struct snd_kcontrol_new tas2780_asi1_mux = |
100 | SOC_DAPM_ENUM("ASI1 Source" , tas2780_ASI1_src_enum); |
101 | |
102 | static const struct snd_kcontrol_new isense_switch = |
103 | SOC_DAPM_SINGLE("Switch" , TAS2780_PWR_CTRL, |
104 | TAS2780_ISENSE_POWER_EN, 1, 1); |
105 | static const struct snd_kcontrol_new vsense_switch = |
106 | SOC_DAPM_SINGLE("Switch" , TAS2780_PWR_CTRL, |
107 | TAS2780_VSENSE_POWER_EN, 1, 1); |
108 | |
109 | static const struct snd_soc_dapm_widget tas2780_dapm_widgets[] = { |
110 | SND_SOC_DAPM_AIF_IN("ASI1" , "ASI1 Playback" , 0, SND_SOC_NOPM, 0, 0), |
111 | SND_SOC_DAPM_MUX("ASI1 Sel" , SND_SOC_NOPM, 0, 0, &tas2780_asi1_mux), |
112 | SND_SOC_DAPM_SWITCH("ISENSE" , TAS2780_PWR_CTRL, |
113 | TAS2780_ISENSE_POWER_EN, 1, &isense_switch), |
114 | SND_SOC_DAPM_SWITCH("VSENSE" , TAS2780_PWR_CTRL, |
115 | TAS2780_VSENSE_POWER_EN, 1, &vsense_switch), |
116 | SND_SOC_DAPM_OUTPUT("OUT" ), |
117 | SND_SOC_DAPM_SIGGEN("VMON" ), |
118 | SND_SOC_DAPM_SIGGEN("IMON" ) |
119 | }; |
120 | |
121 | static const struct snd_soc_dapm_route tas2780_audio_map[] = { |
122 | {"ASI1 Sel" , "I2C offset" , "ASI1" }, |
123 | {"ASI1 Sel" , "Left" , "ASI1" }, |
124 | {"ASI1 Sel" , "Right" , "ASI1" }, |
125 | {"ASI1 Sel" , "LeftRightDiv2" , "ASI1" }, |
126 | {"OUT" , NULL, "ASI1 Sel" }, |
127 | {"ISENSE" , "Switch" , "IMON" }, |
128 | {"VSENSE" , "Switch" , "VMON" }, |
129 | }; |
130 | |
131 | static int tas2780_mute(struct snd_soc_dai *dai, int mute, int direction) |
132 | { |
133 | struct snd_soc_component *component = dai->component; |
134 | struct tas2780_priv *tas2780 = |
135 | snd_soc_component_get_drvdata(c: component); |
136 | int ret = 0; |
137 | |
138 | ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL, |
139 | TAS2780_PWR_CTRL_MASK, |
140 | val: mute ? TAS2780_PWR_CTRL_MUTE : 0); |
141 | if (ret < 0) { |
142 | dev_err(tas2780->dev, "%s: Failed to set powercontrol\n" , |
143 | __func__); |
144 | goto err; |
145 | } |
146 | ret = 0; |
147 | err: |
148 | return ret; |
149 | } |
150 | |
151 | static int tas2780_set_bitwidth(struct tas2780_priv *tas2780, int bitwidth) |
152 | { |
153 | struct snd_soc_component *component = tas2780->component; |
154 | int sense_en; |
155 | int val; |
156 | int ret; |
157 | int slot_size; |
158 | |
159 | switch (bitwidth) { |
160 | case SNDRV_PCM_FORMAT_S16_LE: |
161 | ret = snd_soc_component_update_bits(component, |
162 | TAS2780_TDM_CFG2, |
163 | TAS2780_TDM_CFG2_RXW_MASK, |
164 | TAS2780_TDM_CFG2_RXW_16BITS); |
165 | slot_size = TAS2780_TDM_CFG2_RXS_16BITS; |
166 | break; |
167 | case SNDRV_PCM_FORMAT_S24_LE: |
168 | ret = snd_soc_component_update_bits(component, |
169 | TAS2780_TDM_CFG2, |
170 | TAS2780_TDM_CFG2_RXW_MASK, |
171 | TAS2780_TDM_CFG2_RXW_24BITS); |
172 | slot_size = TAS2780_TDM_CFG2_RXS_24BITS; |
173 | break; |
174 | case SNDRV_PCM_FORMAT_S32_LE: |
175 | ret = snd_soc_component_update_bits(component, |
176 | TAS2780_TDM_CFG2, |
177 | TAS2780_TDM_CFG2_RXW_MASK, |
178 | TAS2780_TDM_CFG2_RXW_32BITS); |
179 | slot_size = TAS2780_TDM_CFG2_RXS_32BITS; |
180 | break; |
181 | |
182 | default: |
183 | ret = -EINVAL; |
184 | } |
185 | |
186 | if (ret < 0) { |
187 | dev_err(tas2780->dev, "%s:errCode:0x%x set bitwidth error\n" , |
188 | __func__, ret); |
189 | goto err; |
190 | } |
191 | |
192 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, |
193 | TAS2780_TDM_CFG2_RXS_MASK, val: slot_size); |
194 | if (ret < 0) { |
195 | dev_err(tas2780->dev, |
196 | "%s:errCode:0x%x set RX slot size error\n" , |
197 | __func__, ret); |
198 | goto err; |
199 | } |
200 | |
201 | val = snd_soc_component_read(component: tas2780->component, TAS2780_PWR_CTRL); |
202 | if (val < 0) { |
203 | dev_err(tas2780->dev, "%s:errCode:0x%x read PWR_CTRL error\n" , |
204 | __func__, val); |
205 | ret = val; |
206 | goto err; |
207 | } |
208 | |
209 | if (val & (1 << TAS2780_VSENSE_POWER_EN)) |
210 | sense_en = 0; |
211 | else |
212 | sense_en = TAS2780_TDM_CFG5_VSNS_ENABLE; |
213 | |
214 | ret = snd_soc_component_update_bits(component: tas2780->component, |
215 | TAS2780_TDM_CFG5, TAS2780_TDM_CFG5_VSNS_ENABLE, val: sense_en); |
216 | if (ret < 0) { |
217 | dev_err(tas2780->dev, "%s:errCode:0x%x enable vSNS error\n" , |
218 | __func__, ret); |
219 | goto err; |
220 | } |
221 | |
222 | if (val & (1 << TAS2780_ISENSE_POWER_EN)) |
223 | sense_en = 0; |
224 | else |
225 | sense_en = TAS2780_TDM_CFG6_ISNS_ENABLE; |
226 | |
227 | ret = snd_soc_component_update_bits(component: tas2780->component, |
228 | TAS2780_TDM_CFG6, TAS2780_TDM_CFG6_ISNS_ENABLE, val: sense_en); |
229 | if (ret < 0) { |
230 | dev_err(tas2780->dev, "%s:errCode:0x%x enable iSNS error\n" , |
231 | __func__, ret); |
232 | goto err; |
233 | } |
234 | ret = 0; |
235 | err: |
236 | return ret; |
237 | } |
238 | |
239 | static int tas2780_set_samplerate( |
240 | struct tas2780_priv *tas2780, int samplerate) |
241 | { |
242 | struct snd_soc_component *component = tas2780->component; |
243 | int ramp_rate_val; |
244 | int ret; |
245 | |
246 | switch (samplerate) { |
247 | case 48000: |
248 | ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ | |
249 | TAS2780_TDM_CFG0_44_1_48KHZ; |
250 | break; |
251 | case 44100: |
252 | ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ | |
253 | TAS2780_TDM_CFG0_44_1_48KHZ; |
254 | break; |
255 | case 96000: |
256 | ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ | |
257 | TAS2780_TDM_CFG0_88_2_96KHZ; |
258 | break; |
259 | case 88200: |
260 | ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ | |
261 | TAS2780_TDM_CFG0_88_2_96KHZ; |
262 | break; |
263 | default: |
264 | return -EINVAL; |
265 | } |
266 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG0, |
267 | TAS2780_TDM_CFG0_SMP_MASK | TAS2780_TDM_CFG0_MASK, |
268 | val: ramp_rate_val); |
269 | if (ret < 0) { |
270 | dev_err(tas2780->dev, |
271 | "%s:errCode:0x%x Failed to set ramp_rate_val\n" , |
272 | __func__, ret); |
273 | goto err; |
274 | } |
275 | ret = 0; |
276 | err: |
277 | return ret; |
278 | } |
279 | |
280 | static int tas2780_hw_params(struct snd_pcm_substream *substream, |
281 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) |
282 | { |
283 | struct snd_soc_component *component = dai->component; |
284 | struct tas2780_priv *tas2780 = |
285 | snd_soc_component_get_drvdata(c: component); |
286 | int ret; |
287 | |
288 | ret = tas2780_set_bitwidth(tas2780, bitwidth: params_format(p: params)); |
289 | if (ret < 0) |
290 | return ret; |
291 | |
292 | return tas2780_set_samplerate(tas2780, samplerate: params_rate(p: params)); |
293 | } |
294 | |
295 | static int tas2780_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
296 | { |
297 | struct snd_soc_component *component = dai->component; |
298 | struct tas2780_priv *tas2780 = |
299 | snd_soc_component_get_drvdata(c: component); |
300 | u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0; |
301 | int iface; |
302 | int ret = 0; |
303 | |
304 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
305 | case SND_SOC_DAIFMT_NB_NF: |
306 | asi_cfg_1 = TAS2780_TDM_CFG1_RX_RISING; |
307 | break; |
308 | case SND_SOC_DAIFMT_IB_NF: |
309 | asi_cfg_1 = TAS2780_TDM_CFG1_RX_FALLING; |
310 | break; |
311 | default: |
312 | dev_err(tas2780->dev, "ASI format Inverse is not found\n" ); |
313 | return -EINVAL; |
314 | } |
315 | |
316 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1, |
317 | TAS2780_TDM_CFG1_RX_MASK, val: asi_cfg_1); |
318 | if (ret < 0) { |
319 | dev_err(tas2780->dev, |
320 | "%s:errCode:0x%x Failed to set asi_cfg_1\n" , |
321 | __func__, ret); |
322 | goto err; |
323 | } |
324 | |
325 | if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S) |
326 | || ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) |
327 | == SND_SOC_DAIFMT_DSP_A)){ |
328 | iface = TAS2780_TDM_CFG2_SCFG_I2S; |
329 | tdm_rx_start_slot = 1; |
330 | } else { |
331 | if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) |
332 | == SND_SOC_DAIFMT_DSP_B) |
333 | || ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) |
334 | == SND_SOC_DAIFMT_LEFT_J)) { |
335 | iface = TAS2780_TDM_CFG2_SCFG_LEFT_J; |
336 | tdm_rx_start_slot = 0; |
337 | } else { |
338 | dev_err(tas2780->dev, |
339 | "%s:DAI Format is not found, fmt=0x%x\n" , |
340 | __func__, fmt); |
341 | ret = -EINVAL; |
342 | goto err; |
343 | } |
344 | } |
345 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1, |
346 | TAS2780_TDM_CFG1_MASK, |
347 | val: (tdm_rx_start_slot << TAS2780_TDM_CFG1_51_SHIFT)); |
348 | if (ret < 0) { |
349 | dev_err(tas2780->dev, |
350 | "%s:errCode:0x%x Failed to set tdm_rx_start_slot\n" , |
351 | __func__, ret); |
352 | goto err; |
353 | } |
354 | |
355 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, |
356 | TAS2780_TDM_CFG2_SCFG_MASK, val: iface); |
357 | if (ret < 0) { |
358 | dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set iface\n" , |
359 | __func__, ret); |
360 | goto err; |
361 | } |
362 | ret = 0; |
363 | err: |
364 | return ret; |
365 | } |
366 | |
367 | static int tas2780_set_dai_tdm_slot(struct snd_soc_dai *dai, |
368 | unsigned int tx_mask, |
369 | unsigned int rx_mask, |
370 | int slots, int slot_width) |
371 | { |
372 | struct snd_soc_component *component = dai->component; |
373 | struct tas2780_priv *tas2780 = |
374 | snd_soc_component_get_drvdata(c: component); |
375 | int left_slot, right_slot; |
376 | int slots_cfg; |
377 | int slot_size; |
378 | int ret = 0; |
379 | |
380 | if (tx_mask == 0 || rx_mask != 0) |
381 | return -EINVAL; |
382 | |
383 | left_slot = __ffs(tx_mask); |
384 | tx_mask &= ~(1 << left_slot); |
385 | if (tx_mask == 0) { |
386 | right_slot = left_slot; |
387 | } else { |
388 | right_slot = __ffs(tx_mask); |
389 | tx_mask &= ~(1 << right_slot); |
390 | } |
391 | |
392 | if (tx_mask != 0 || left_slot >= slots || right_slot >= slots) |
393 | return -EINVAL; |
394 | |
395 | slots_cfg = (right_slot << TAS2780_TDM_CFG3_RXS_SHIFT) | left_slot; |
396 | ret = snd_soc_component_write(component, TAS2780_TDM_CFG3, val: slots_cfg); |
397 | if (ret) { |
398 | dev_err(tas2780->dev, |
399 | "%s:errCode:0x%x Failed to set slots_cfg\n" , |
400 | __func__, ret); |
401 | goto err; |
402 | } |
403 | |
404 | switch (slot_width) { |
405 | case 16: |
406 | slot_size = TAS2780_TDM_CFG2_RXS_16BITS; |
407 | break; |
408 | case 24: |
409 | slot_size = TAS2780_TDM_CFG2_RXS_24BITS; |
410 | break; |
411 | case 32: |
412 | slot_size = TAS2780_TDM_CFG2_RXS_32BITS; |
413 | break; |
414 | default: |
415 | ret = -EINVAL; |
416 | goto err; |
417 | } |
418 | |
419 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2, |
420 | TAS2780_TDM_CFG2_RXS_MASK, val: slot_size); |
421 | if (ret < 0) { |
422 | dev_err(tas2780->dev, |
423 | "%s:errCode:0x%x Failed to set slot_size\n" , |
424 | __func__, ret); |
425 | goto err; |
426 | } |
427 | |
428 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG5, |
429 | TAS2780_TDM_CFG5_50_MASK, val: tas2780->v_sense_slot); |
430 | if (ret < 0) { |
431 | dev_err(tas2780->dev, |
432 | "%s:errCode:0x%x Failed to set v_sense_slot\n" , |
433 | __func__, ret); |
434 | goto err; |
435 | } |
436 | |
437 | ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG6, |
438 | TAS2780_TDM_CFG6_50_MASK, val: tas2780->i_sense_slot); |
439 | if (ret < 0) { |
440 | dev_err(tas2780->dev, |
441 | "%s:errCode:0x%x Failed to set i_sense_slot\n" , |
442 | __func__, ret); |
443 | goto err; |
444 | } |
445 | ret = 0; |
446 | err: |
447 | return ret; |
448 | } |
449 | |
450 | static const struct snd_soc_dai_ops tas2780_dai_ops = { |
451 | .mute_stream = tas2780_mute, |
452 | .hw_params = tas2780_hw_params, |
453 | .set_fmt = tas2780_set_fmt, |
454 | .set_tdm_slot = tas2780_set_dai_tdm_slot, |
455 | .no_capture_mute = 1, |
456 | }; |
457 | |
458 | #define TAS2780_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
459 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
460 | |
461 | #define TAS2780_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ |
462 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200) |
463 | |
464 | static struct snd_soc_dai_driver tas2780_dai_driver[] = { |
465 | { |
466 | .name = "tas2780 ASI1" , |
467 | .id = 0, |
468 | .playback = { |
469 | .stream_name = "ASI1 Playback" , |
470 | .channels_min = 2, |
471 | .channels_max = 2, |
472 | .rates = TAS2780_RATES, |
473 | .formats = TAS2780_FORMATS, |
474 | }, |
475 | .capture = { |
476 | .stream_name = "ASI1 Capture" , |
477 | .channels_min = 1, |
478 | .channels_max = 2, |
479 | .rates = TAS2780_RATES, |
480 | .formats = TAS2780_FORMATS, |
481 | }, |
482 | .ops = &tas2780_dai_ops, |
483 | .symmetric_rate = 1, |
484 | }, |
485 | }; |
486 | |
487 | static int tas2780_codec_probe(struct snd_soc_component *component) |
488 | { |
489 | struct tas2780_priv *tas2780 = |
490 | snd_soc_component_get_drvdata(c: component); |
491 | int ret = 0; |
492 | |
493 | tas2780->component = component; |
494 | |
495 | tas2780_reset(tas2780); |
496 | ret = snd_soc_component_update_bits(component, |
497 | TAS2780_IC_CFG, TAS2780_IC_CFG_MASK, |
498 | TAS2780_IC_CFG_ENABLE); |
499 | if (ret < 0) |
500 | dev_err(tas2780->dev, "%s:errCode:0x%0x\n" , |
501 | __func__, ret); |
502 | |
503 | return ret; |
504 | } |
505 | |
506 | static DECLARE_TLV_DB_SCALE(tas2780_digital_tlv, 1100, 50, 0); |
507 | static DECLARE_TLV_DB_SCALE(tas2780_playback_volume, -10000, 50, 0); |
508 | |
509 | static const struct snd_kcontrol_new tas2780_snd_controls[] = { |
510 | SOC_SINGLE_TLV("Speaker Volume" , TAS2780_DVC, 0, |
511 | TAS2780_DVC_MAX, 1, tas2780_playback_volume), |
512 | SOC_SINGLE_TLV("Amp Gain Volume" , TAS2780_CHNL_0, 0, 0x14, 0, |
513 | tas2780_digital_tlv), |
514 | }; |
515 | |
516 | static const struct snd_soc_component_driver soc_component_driver_tas2780 = { |
517 | .probe = tas2780_codec_probe, |
518 | #ifdef CONFIG_PM |
519 | .suspend = tas2780_codec_suspend, |
520 | .resume = tas2780_codec_resume, |
521 | #endif |
522 | .controls = tas2780_snd_controls, |
523 | .num_controls = ARRAY_SIZE(tas2780_snd_controls), |
524 | .dapm_widgets = tas2780_dapm_widgets, |
525 | .num_dapm_widgets = ARRAY_SIZE(tas2780_dapm_widgets), |
526 | .dapm_routes = tas2780_audio_map, |
527 | .num_dapm_routes = ARRAY_SIZE(tas2780_audio_map), |
528 | .idle_bias_on = 1, |
529 | .endianness = 1, |
530 | }; |
531 | |
532 | static const struct reg_default tas2780_reg_defaults[] = { |
533 | { TAS2780_PAGE, 0x00 }, |
534 | { TAS2780_SW_RST, 0x00 }, |
535 | { TAS2780_PWR_CTRL, 0x1a }, |
536 | { TAS2780_DVC, 0x00 }, |
537 | { TAS2780_CHNL_0, 0x00 }, |
538 | { TAS2780_TDM_CFG0, 0x09 }, |
539 | { TAS2780_TDM_CFG1, 0x02 }, |
540 | { TAS2780_TDM_CFG2, 0x0a }, |
541 | { TAS2780_TDM_CFG3, 0x10 }, |
542 | { TAS2780_TDM_CFG5, 0x42 }, |
543 | }; |
544 | |
545 | static const struct regmap_range_cfg tas2780_regmap_ranges[] = { |
546 | { |
547 | .range_min = 0, |
548 | .range_max = 1 * 128, |
549 | .selector_reg = TAS2780_PAGE, |
550 | .selector_mask = 0xff, |
551 | .selector_shift = 0, |
552 | .window_start = 0, |
553 | .window_len = 128, |
554 | }, |
555 | }; |
556 | |
557 | static const struct regmap_config tas2780_i2c_regmap = { |
558 | .reg_bits = 8, |
559 | .val_bits = 8, |
560 | .reg_defaults = tas2780_reg_defaults, |
561 | .num_reg_defaults = ARRAY_SIZE(tas2780_reg_defaults), |
562 | .cache_type = REGCACHE_RBTREE, |
563 | .ranges = tas2780_regmap_ranges, |
564 | .num_ranges = ARRAY_SIZE(tas2780_regmap_ranges), |
565 | .max_register = 1 * 128, |
566 | }; |
567 | |
568 | static int tas2780_parse_dt(struct device *dev, struct tas2780_priv *tas2780) |
569 | { |
570 | int ret = 0; |
571 | |
572 | tas2780->reset_gpio = devm_gpiod_get_optional(dev: tas2780->dev, con_id: "reset" , |
573 | flags: GPIOD_OUT_HIGH); |
574 | if (IS_ERR(ptr: tas2780->reset_gpio)) { |
575 | if (PTR_ERR(ptr: tas2780->reset_gpio) == -EPROBE_DEFER) { |
576 | tas2780->reset_gpio = NULL; |
577 | return -EPROBE_DEFER; |
578 | } |
579 | } |
580 | |
581 | ret = fwnode_property_read_u32(fwnode: dev->fwnode, propname: "ti,imon-slot-no" , |
582 | val: &tas2780->i_sense_slot); |
583 | if (ret) |
584 | tas2780->i_sense_slot = 0; |
585 | |
586 | ret = fwnode_property_read_u32(fwnode: dev->fwnode, propname: "ti,vmon-slot-no" , |
587 | val: &tas2780->v_sense_slot); |
588 | if (ret) |
589 | tas2780->v_sense_slot = 2; |
590 | |
591 | return 0; |
592 | } |
593 | |
594 | static int tas2780_i2c_probe(struct i2c_client *client) |
595 | { |
596 | struct tas2780_priv *tas2780; |
597 | int result; |
598 | |
599 | tas2780 = devm_kzalloc(dev: &client->dev, size: sizeof(struct tas2780_priv), |
600 | GFP_KERNEL); |
601 | if (!tas2780) |
602 | return -ENOMEM; |
603 | tas2780->dev = &client->dev; |
604 | i2c_set_clientdata(client, data: tas2780); |
605 | dev_set_drvdata(dev: &client->dev, data: tas2780); |
606 | |
607 | tas2780->regmap = devm_regmap_init_i2c(client, &tas2780_i2c_regmap); |
608 | if (IS_ERR(ptr: tas2780->regmap)) { |
609 | result = PTR_ERR(ptr: tas2780->regmap); |
610 | dev_err(&client->dev, "Failed to allocate register map: %d\n" , |
611 | result); |
612 | return result; |
613 | } |
614 | |
615 | if (client->dev.of_node) { |
616 | result = tas2780_parse_dt(dev: &client->dev, tas2780); |
617 | if (result) { |
618 | dev_err(tas2780->dev, |
619 | "%s: Failed to parse devicetree\n" , __func__); |
620 | return result; |
621 | } |
622 | } |
623 | |
624 | return devm_snd_soc_register_component(dev: tas2780->dev, |
625 | component_driver: &soc_component_driver_tas2780, dai_drv: tas2780_dai_driver, |
626 | ARRAY_SIZE(tas2780_dai_driver)); |
627 | } |
628 | |
629 | static const struct i2c_device_id tas2780_i2c_id[] = { |
630 | { "tas2780" , 0}, |
631 | { } |
632 | }; |
633 | MODULE_DEVICE_TABLE(i2c, tas2780_i2c_id); |
634 | |
635 | #if defined(CONFIG_OF) |
636 | static const struct of_device_id tas2780_of_match[] = { |
637 | { .compatible = "ti,tas2780" }, |
638 | {}, |
639 | }; |
640 | MODULE_DEVICE_TABLE(of, tas2780_of_match); |
641 | #endif |
642 | |
643 | static struct i2c_driver tas2780_i2c_driver = { |
644 | .driver = { |
645 | .name = "tas2780" , |
646 | .of_match_table = of_match_ptr(tas2780_of_match), |
647 | }, |
648 | .probe = tas2780_i2c_probe, |
649 | .id_table = tas2780_i2c_id, |
650 | }; |
651 | module_i2c_driver(tas2780_i2c_driver); |
652 | |
653 | MODULE_AUTHOR("Raphael Xu <raphael-xu@ti.com>" ); |
654 | MODULE_DESCRIPTION("TAS2780 I2C Smart Amplifier driver" ); |
655 | MODULE_LICENSE("GPL" ); |
656 | |