1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // |
3 | // ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D |
4 | // Audio Amplifier with Speaker I/V Sense |
5 | // |
6 | // Copyright (C) 2016-2017 Texas Instruments Incorporated - https://www.ti.com/ |
7 | // Author: Tracy Yi <tracy-yi@ti.com> |
8 | // Frank Shi <shifu0704@thundersoft.com> |
9 | |
10 | #include <linux/module.h> |
11 | #include <linux/moduleparam.h> |
12 | #include <linux/err.h> |
13 | #include <linux/init.h> |
14 | #include <linux/delay.h> |
15 | #include <linux/pm.h> |
16 | #include <linux/i2c.h> |
17 | #include <linux/gpio.h> |
18 | #include <linux/gpio/consumer.h> |
19 | #include <linux/regulator/consumer.h> |
20 | #include <linux/firmware.h> |
21 | #include <linux/regmap.h> |
22 | #include <linux/of.h> |
23 | #include <linux/of_gpio.h> |
24 | #include <linux/slab.h> |
25 | #include <sound/soc.h> |
26 | #include <sound/pcm.h> |
27 | #include <sound/pcm_params.h> |
28 | #include <sound/initval.h> |
29 | #include <sound/tlv.h> |
30 | |
31 | #include "tas2770.h" |
32 | |
33 | #define TAS2770_MDELAY 0xFFFFFFFE |
34 | |
35 | static void tas2770_reset(struct tas2770_priv *tas2770) |
36 | { |
37 | if (tas2770->reset_gpio) { |
38 | gpiod_set_value_cansleep(desc: tas2770->reset_gpio, value: 0); |
39 | msleep(msecs: 20); |
40 | gpiod_set_value_cansleep(desc: tas2770->reset_gpio, value: 1); |
41 | usleep_range(min: 1000, max: 2000); |
42 | } |
43 | |
44 | snd_soc_component_write(component: tas2770->component, TAS2770_SW_RST, |
45 | TAS2770_RST); |
46 | usleep_range(min: 1000, max: 2000); |
47 | } |
48 | |
49 | static int tas2770_update_pwr_ctrl(struct tas2770_priv *tas2770) |
50 | { |
51 | struct snd_soc_component *component = tas2770->component; |
52 | unsigned int val; |
53 | int ret; |
54 | |
55 | if (tas2770->dac_powered) |
56 | val = tas2770->unmuted ? |
57 | TAS2770_PWR_CTRL_ACTIVE : TAS2770_PWR_CTRL_MUTE; |
58 | else |
59 | val = TAS2770_PWR_CTRL_SHUTDOWN; |
60 | |
61 | ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, |
62 | TAS2770_PWR_CTRL_MASK, val); |
63 | if (ret < 0) |
64 | return ret; |
65 | |
66 | return 0; |
67 | } |
68 | |
69 | #ifdef CONFIG_PM |
70 | static int tas2770_codec_suspend(struct snd_soc_component *component) |
71 | { |
72 | struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(c: component); |
73 | int ret = 0; |
74 | |
75 | regcache_cache_only(map: tas2770->regmap, enable: true); |
76 | regcache_mark_dirty(map: tas2770->regmap); |
77 | |
78 | if (tas2770->sdz_gpio) { |
79 | gpiod_set_value_cansleep(desc: tas2770->sdz_gpio, value: 0); |
80 | } else { |
81 | ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL, |
82 | TAS2770_PWR_CTRL_MASK, |
83 | TAS2770_PWR_CTRL_SHUTDOWN); |
84 | if (ret < 0) { |
85 | regcache_cache_only(map: tas2770->regmap, enable: false); |
86 | regcache_sync(map: tas2770->regmap); |
87 | return ret; |
88 | } |
89 | |
90 | ret = 0; |
91 | } |
92 | |
93 | return ret; |
94 | } |
95 | |
96 | static int tas2770_codec_resume(struct snd_soc_component *component) |
97 | { |
98 | struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(c: component); |
99 | int ret; |
100 | |
101 | if (tas2770->sdz_gpio) { |
102 | gpiod_set_value_cansleep(desc: tas2770->sdz_gpio, value: 1); |
103 | usleep_range(min: 1000, max: 2000); |
104 | } else { |
105 | ret = tas2770_update_pwr_ctrl(tas2770); |
106 | if (ret < 0) |
107 | return ret; |
108 | } |
109 | |
110 | regcache_cache_only(map: tas2770->regmap, enable: false); |
111 | |
112 | return regcache_sync(map: tas2770->regmap); |
113 | } |
114 | #else |
115 | #define tas2770_codec_suspend NULL |
116 | #define tas2770_codec_resume NULL |
117 | #endif |
118 | |
119 | static const char * const tas2770_ASI1_src[] = { |
120 | "I2C offset" , "Left" , "Right" , "LeftRightDiv2" , |
121 | }; |
122 | |
123 | static SOC_ENUM_SINGLE_DECL( |
124 | tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2, |
125 | 4, tas2770_ASI1_src); |
126 | |
127 | static const struct snd_kcontrol_new tas2770_asi1_mux = |
128 | SOC_DAPM_ENUM("ASI1 Source" , tas2770_ASI1_src_enum); |
129 | |
130 | static int tas2770_dac_event(struct snd_soc_dapm_widget *w, |
131 | struct snd_kcontrol *kcontrol, int event) |
132 | { |
133 | struct snd_soc_component *component = |
134 | snd_soc_dapm_to_component(dapm: w->dapm); |
135 | struct tas2770_priv *tas2770 = |
136 | snd_soc_component_get_drvdata(c: component); |
137 | int ret; |
138 | |
139 | switch (event) { |
140 | case SND_SOC_DAPM_POST_PMU: |
141 | tas2770->dac_powered = 1; |
142 | ret = tas2770_update_pwr_ctrl(tas2770); |
143 | break; |
144 | case SND_SOC_DAPM_PRE_PMD: |
145 | tas2770->dac_powered = 0; |
146 | ret = tas2770_update_pwr_ctrl(tas2770); |
147 | break; |
148 | default: |
149 | dev_err(tas2770->dev, "Not supported evevt\n" ); |
150 | return -EINVAL; |
151 | } |
152 | |
153 | return ret; |
154 | } |
155 | |
156 | static const struct snd_kcontrol_new isense_switch = |
157 | SOC_DAPM_SINGLE("Switch" , TAS2770_PWR_CTRL, 3, 1, 1); |
158 | static const struct snd_kcontrol_new vsense_switch = |
159 | SOC_DAPM_SINGLE("Switch" , TAS2770_PWR_CTRL, 2, 1, 1); |
160 | |
161 | static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = { |
162 | SND_SOC_DAPM_AIF_IN("ASI1" , "ASI1 Playback" , 0, SND_SOC_NOPM, 0, 0), |
163 | SND_SOC_DAPM_MUX("ASI1 Sel" , SND_SOC_NOPM, 0, 0, &tas2770_asi1_mux), |
164 | SND_SOC_DAPM_SWITCH("ISENSE" , TAS2770_PWR_CTRL, 3, 1, &isense_switch), |
165 | SND_SOC_DAPM_SWITCH("VSENSE" , TAS2770_PWR_CTRL, 2, 1, &vsense_switch), |
166 | SND_SOC_DAPM_DAC_E("DAC" , NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event, |
167 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), |
168 | SND_SOC_DAPM_OUTPUT("OUT" ), |
169 | SND_SOC_DAPM_SIGGEN("VMON" ), |
170 | SND_SOC_DAPM_SIGGEN("IMON" ) |
171 | }; |
172 | |
173 | static const struct snd_soc_dapm_route tas2770_audio_map[] = { |
174 | {"ASI1 Sel" , "I2C offset" , "ASI1" }, |
175 | {"ASI1 Sel" , "Left" , "ASI1" }, |
176 | {"ASI1 Sel" , "Right" , "ASI1" }, |
177 | {"ASI1 Sel" , "LeftRightDiv2" , "ASI1" }, |
178 | {"DAC" , NULL, "ASI1 Sel" }, |
179 | {"OUT" , NULL, "DAC" }, |
180 | {"ISENSE" , "Switch" , "IMON" }, |
181 | {"VSENSE" , "Switch" , "VMON" }, |
182 | }; |
183 | |
184 | static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction) |
185 | { |
186 | struct snd_soc_component *component = dai->component; |
187 | struct tas2770_priv *tas2770 = |
188 | snd_soc_component_get_drvdata(c: component); |
189 | |
190 | tas2770->unmuted = !mute; |
191 | return tas2770_update_pwr_ctrl(tas2770); |
192 | } |
193 | |
194 | static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth) |
195 | { |
196 | int ret; |
197 | struct snd_soc_component *component = tas2770->component; |
198 | |
199 | switch (bitwidth) { |
200 | case SNDRV_PCM_FORMAT_S16_LE: |
201 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, |
202 | TAS2770_TDM_CFG_REG2_RXW_MASK, |
203 | TAS2770_TDM_CFG_REG2_RXW_16BITS); |
204 | tas2770->v_sense_slot = tas2770->i_sense_slot + 2; |
205 | break; |
206 | case SNDRV_PCM_FORMAT_S24_LE: |
207 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, |
208 | TAS2770_TDM_CFG_REG2_RXW_MASK, |
209 | TAS2770_TDM_CFG_REG2_RXW_24BITS); |
210 | tas2770->v_sense_slot = tas2770->i_sense_slot + 4; |
211 | break; |
212 | case SNDRV_PCM_FORMAT_S32_LE: |
213 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, |
214 | TAS2770_TDM_CFG_REG2_RXW_MASK, |
215 | TAS2770_TDM_CFG_REG2_RXW_32BITS); |
216 | tas2770->v_sense_slot = tas2770->i_sense_slot + 4; |
217 | break; |
218 | |
219 | default: |
220 | return -EINVAL; |
221 | } |
222 | |
223 | if (ret < 0) |
224 | return ret; |
225 | |
226 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5, |
227 | TAS2770_TDM_CFG_REG5_VSNS_MASK | |
228 | TAS2770_TDM_CFG_REG5_50_MASK, |
229 | TAS2770_TDM_CFG_REG5_VSNS_ENABLE | |
230 | tas2770->v_sense_slot); |
231 | if (ret < 0) |
232 | return ret; |
233 | |
234 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6, |
235 | TAS2770_TDM_CFG_REG6_ISNS_MASK | |
236 | TAS2770_TDM_CFG_REG6_50_MASK, |
237 | TAS2770_TDM_CFG_REG6_ISNS_ENABLE | |
238 | tas2770->i_sense_slot); |
239 | if (ret < 0) |
240 | return ret; |
241 | |
242 | return 0; |
243 | } |
244 | |
245 | static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate) |
246 | { |
247 | struct snd_soc_component *component = tas2770->component; |
248 | int ramp_rate_val; |
249 | int ret; |
250 | |
251 | switch (samplerate) { |
252 | case 48000: |
253 | ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | |
254 | TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; |
255 | break; |
256 | case 44100: |
257 | ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | |
258 | TAS2770_TDM_CFG_REG0_31_44_1_48KHZ; |
259 | break; |
260 | case 96000: |
261 | ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | |
262 | TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; |
263 | break; |
264 | case 88200: |
265 | ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | |
266 | TAS2770_TDM_CFG_REG0_31_88_2_96KHZ; |
267 | break; |
268 | case 192000: |
269 | ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ | |
270 | TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; |
271 | break; |
272 | case 176400: |
273 | ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ | |
274 | TAS2770_TDM_CFG_REG0_31_176_4_192KHZ; |
275 | break; |
276 | default: |
277 | return -EINVAL; |
278 | } |
279 | |
280 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0, |
281 | TAS2770_TDM_CFG_REG0_SMP_MASK | |
282 | TAS2770_TDM_CFG_REG0_31_MASK, |
283 | val: ramp_rate_val); |
284 | if (ret < 0) |
285 | return ret; |
286 | |
287 | return 0; |
288 | } |
289 | |
290 | static int tas2770_hw_params(struct snd_pcm_substream *substream, |
291 | struct snd_pcm_hw_params *params, |
292 | struct snd_soc_dai *dai) |
293 | { |
294 | struct snd_soc_component *component = dai->component; |
295 | struct tas2770_priv *tas2770 = |
296 | snd_soc_component_get_drvdata(c: component); |
297 | int ret; |
298 | |
299 | ret = tas2770_set_bitwidth(tas2770, bitwidth: params_format(p: params)); |
300 | if (ret) |
301 | return ret; |
302 | |
303 | return tas2770_set_samplerate(tas2770, samplerate: params_rate(p: params)); |
304 | } |
305 | |
306 | static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
307 | { |
308 | struct snd_soc_component *component = dai->component; |
309 | struct tas2770_priv *tas2770 = |
310 | snd_soc_component_get_drvdata(c: component); |
311 | u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0; |
312 | int ret; |
313 | |
314 | switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { |
315 | case SND_SOC_DAIFMT_CBC_CFC: |
316 | break; |
317 | default: |
318 | dev_err(tas2770->dev, "ASI invalid DAI clocking\n" ); |
319 | return -EINVAL; |
320 | } |
321 | |
322 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
323 | case SND_SOC_DAIFMT_NB_IF: |
324 | invert_fpol = 1; |
325 | fallthrough; |
326 | case SND_SOC_DAIFMT_NB_NF: |
327 | asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING; |
328 | break; |
329 | case SND_SOC_DAIFMT_IB_IF: |
330 | invert_fpol = 1; |
331 | fallthrough; |
332 | case SND_SOC_DAIFMT_IB_NF: |
333 | asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING; |
334 | break; |
335 | default: |
336 | dev_err(tas2770->dev, "ASI format Inverse is not found\n" ); |
337 | return -EINVAL; |
338 | } |
339 | |
340 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, |
341 | TAS2770_TDM_CFG_REG1_RX_MASK, |
342 | val: asi_cfg_1); |
343 | if (ret < 0) |
344 | return ret; |
345 | |
346 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
347 | case SND_SOC_DAIFMT_I2S: |
348 | tdm_rx_start_slot = 1; |
349 | fpol_preinv = 0; |
350 | break; |
351 | case SND_SOC_DAIFMT_DSP_A: |
352 | tdm_rx_start_slot = 0; |
353 | fpol_preinv = 1; |
354 | break; |
355 | case SND_SOC_DAIFMT_DSP_B: |
356 | tdm_rx_start_slot = 1; |
357 | fpol_preinv = 1; |
358 | break; |
359 | case SND_SOC_DAIFMT_LEFT_J: |
360 | tdm_rx_start_slot = 0; |
361 | fpol_preinv = 1; |
362 | break; |
363 | default: |
364 | dev_err(tas2770->dev, |
365 | "DAI Format is not found, fmt=0x%x\n" , fmt); |
366 | return -EINVAL; |
367 | } |
368 | |
369 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1, |
370 | TAS2770_TDM_CFG_REG1_MASK, |
371 | val: (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT)); |
372 | if (ret < 0) |
373 | return ret; |
374 | |
375 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0, |
376 | TAS2770_TDM_CFG_REG0_FPOL_MASK, |
377 | val: (fpol_preinv ^ invert_fpol) |
378 | ? TAS2770_TDM_CFG_REG0_FPOL_RSING |
379 | : TAS2770_TDM_CFG_REG0_FPOL_FALING); |
380 | if (ret < 0) |
381 | return ret; |
382 | |
383 | return 0; |
384 | } |
385 | |
386 | static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai, |
387 | unsigned int tx_mask, |
388 | unsigned int rx_mask, |
389 | int slots, int slot_width) |
390 | { |
391 | struct snd_soc_component *component = dai->component; |
392 | int left_slot, right_slot; |
393 | int ret; |
394 | |
395 | if (tx_mask == 0 || rx_mask != 0) |
396 | return -EINVAL; |
397 | |
398 | left_slot = __ffs(tx_mask); |
399 | tx_mask &= ~(1 << left_slot); |
400 | if (tx_mask == 0) { |
401 | right_slot = left_slot; |
402 | } else { |
403 | right_slot = __ffs(tx_mask); |
404 | tx_mask &= ~(1 << right_slot); |
405 | } |
406 | |
407 | if (tx_mask != 0 || left_slot >= slots || right_slot >= slots) |
408 | return -EINVAL; |
409 | |
410 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, |
411 | TAS2770_TDM_CFG_REG3_30_MASK, |
412 | val: (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT)); |
413 | if (ret < 0) |
414 | return ret; |
415 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3, |
416 | TAS2770_TDM_CFG_REG3_RXS_MASK, |
417 | val: (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT)); |
418 | if (ret < 0) |
419 | return ret; |
420 | |
421 | switch (slot_width) { |
422 | case 16: |
423 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, |
424 | TAS2770_TDM_CFG_REG2_RXS_MASK, |
425 | TAS2770_TDM_CFG_REG2_RXS_16BITS); |
426 | break; |
427 | case 24: |
428 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, |
429 | TAS2770_TDM_CFG_REG2_RXS_MASK, |
430 | TAS2770_TDM_CFG_REG2_RXS_24BITS); |
431 | break; |
432 | case 32: |
433 | ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2, |
434 | TAS2770_TDM_CFG_REG2_RXS_MASK, |
435 | TAS2770_TDM_CFG_REG2_RXS_32BITS); |
436 | break; |
437 | case 0: |
438 | /* Do not change slot width */ |
439 | ret = 0; |
440 | break; |
441 | default: |
442 | ret = -EINVAL; |
443 | } |
444 | |
445 | if (ret < 0) |
446 | return ret; |
447 | |
448 | return 0; |
449 | } |
450 | |
451 | static const struct snd_soc_dai_ops tas2770_dai_ops = { |
452 | .mute_stream = tas2770_mute, |
453 | .hw_params = tas2770_hw_params, |
454 | .set_fmt = tas2770_set_fmt, |
455 | .set_tdm_slot = tas2770_set_dai_tdm_slot, |
456 | .no_capture_mute = 1, |
457 | }; |
458 | |
459 | #define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
460 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
461 | |
462 | #define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ |
463 | SNDRV_PCM_RATE_96000 |\ |
464 | SNDRV_PCM_RATE_192000\ |
465 | ) |
466 | |
467 | static struct snd_soc_dai_driver tas2770_dai_driver[] = { |
468 | { |
469 | .name = "tas2770 ASI1" , |
470 | .id = 0, |
471 | .playback = { |
472 | .stream_name = "ASI1 Playback" , |
473 | .channels_min = 1, |
474 | .channels_max = 2, |
475 | .rates = TAS2770_RATES, |
476 | .formats = TAS2770_FORMATS, |
477 | }, |
478 | .capture = { |
479 | .stream_name = "ASI1 Capture" , |
480 | .channels_min = 0, |
481 | .channels_max = 2, |
482 | .rates = TAS2770_RATES, |
483 | .formats = TAS2770_FORMATS, |
484 | }, |
485 | .ops = &tas2770_dai_ops, |
486 | .symmetric_rate = 1, |
487 | }, |
488 | }; |
489 | |
490 | static const struct regmap_config tas2770_i2c_regmap; |
491 | |
492 | static int tas2770_codec_probe(struct snd_soc_component *component) |
493 | { |
494 | struct tas2770_priv *tas2770 = |
495 | snd_soc_component_get_drvdata(c: component); |
496 | |
497 | tas2770->component = component; |
498 | |
499 | if (tas2770->sdz_gpio) { |
500 | gpiod_set_value_cansleep(desc: tas2770->sdz_gpio, value: 1); |
501 | usleep_range(min: 1000, max: 2000); |
502 | } |
503 | |
504 | tas2770_reset(tas2770); |
505 | regmap_reinit_cache(map: tas2770->regmap, config: &tas2770_i2c_regmap); |
506 | |
507 | return 0; |
508 | } |
509 | |
510 | static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0); |
511 | static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0); |
512 | |
513 | static const struct snd_kcontrol_new tas2770_snd_controls[] = { |
514 | SOC_SINGLE_TLV("Speaker Playback Volume" , TAS2770_PLAY_CFG_REG2, |
515 | 0, TAS2770_PLAY_CFG_REG2_VMAX, 1, tas2770_playback_volume), |
516 | SOC_SINGLE_TLV("Amp Gain Volume" , TAS2770_PLAY_CFG_REG0, 0, 0x14, 0, |
517 | tas2770_digital_tlv), |
518 | }; |
519 | |
520 | static const struct snd_soc_component_driver soc_component_driver_tas2770 = { |
521 | .probe = tas2770_codec_probe, |
522 | .suspend = tas2770_codec_suspend, |
523 | .resume = tas2770_codec_resume, |
524 | .controls = tas2770_snd_controls, |
525 | .num_controls = ARRAY_SIZE(tas2770_snd_controls), |
526 | .dapm_widgets = tas2770_dapm_widgets, |
527 | .num_dapm_widgets = ARRAY_SIZE(tas2770_dapm_widgets), |
528 | .dapm_routes = tas2770_audio_map, |
529 | .num_dapm_routes = ARRAY_SIZE(tas2770_audio_map), |
530 | .idle_bias_on = 1, |
531 | .endianness = 1, |
532 | }; |
533 | |
534 | static int tas2770_register_codec(struct tas2770_priv *tas2770) |
535 | { |
536 | return devm_snd_soc_register_component(dev: tas2770->dev, |
537 | component_driver: &soc_component_driver_tas2770, |
538 | dai_drv: tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver)); |
539 | } |
540 | |
541 | static const struct reg_default tas2770_reg_defaults[] = { |
542 | { TAS2770_PAGE, 0x00 }, |
543 | { TAS2770_SW_RST, 0x00 }, |
544 | { TAS2770_PWR_CTRL, 0x0e }, |
545 | { TAS2770_PLAY_CFG_REG0, 0x10 }, |
546 | { TAS2770_PLAY_CFG_REG1, 0x01 }, |
547 | { TAS2770_PLAY_CFG_REG2, 0x00 }, |
548 | { TAS2770_MSC_CFG_REG0, 0x07 }, |
549 | { TAS2770_TDM_CFG_REG1, 0x02 }, |
550 | { TAS2770_TDM_CFG_REG2, 0x0a }, |
551 | { TAS2770_TDM_CFG_REG3, 0x10 }, |
552 | { TAS2770_INT_MASK_REG0, 0xfc }, |
553 | { TAS2770_INT_MASK_REG1, 0xb1 }, |
554 | { TAS2770_INT_CFG, 0x05 }, |
555 | { TAS2770_MISC_IRQ, 0x81 }, |
556 | { TAS2770_CLK_CGF, 0x0c }, |
557 | |
558 | }; |
559 | |
560 | static bool tas2770_volatile(struct device *dev, unsigned int reg) |
561 | { |
562 | switch (reg) { |
563 | case TAS2770_PAGE: /* regmap implementation requires this */ |
564 | case TAS2770_SW_RST: /* always clears after write */ |
565 | case TAS2770_BO_PRV_REG0:/* has a self clearing bit */ |
566 | case TAS2770_LVE_INT_REG0: |
567 | case TAS2770_LVE_INT_REG1: |
568 | case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */ |
569 | case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */ |
570 | case TAS2770_VBAT_MSB: |
571 | case TAS2770_VBAT_LSB: |
572 | case TAS2770_TEMP_MSB: |
573 | case TAS2770_TEMP_LSB: |
574 | return true; |
575 | } |
576 | |
577 | return false; |
578 | } |
579 | |
580 | static bool tas2770_writeable(struct device *dev, unsigned int reg) |
581 | { |
582 | switch (reg) { |
583 | case TAS2770_LVE_INT_REG0: |
584 | case TAS2770_LVE_INT_REG1: |
585 | case TAS2770_LAT_INT_REG0: |
586 | case TAS2770_LAT_INT_REG1: |
587 | case TAS2770_VBAT_MSB: |
588 | case TAS2770_VBAT_LSB: |
589 | case TAS2770_TEMP_MSB: |
590 | case TAS2770_TEMP_LSB: |
591 | case TAS2770_TDM_CLK_DETC: |
592 | case TAS2770_REV_AND_GPID: |
593 | return false; |
594 | } |
595 | |
596 | return true; |
597 | } |
598 | |
599 | static const struct regmap_range_cfg tas2770_regmap_ranges[] = { |
600 | { |
601 | .range_min = 0, |
602 | .range_max = 1 * 128, |
603 | .selector_reg = TAS2770_PAGE, |
604 | .selector_mask = 0xff, |
605 | .selector_shift = 0, |
606 | .window_start = 0, |
607 | .window_len = 128, |
608 | }, |
609 | }; |
610 | |
611 | static const struct regmap_config tas2770_i2c_regmap = { |
612 | .reg_bits = 8, |
613 | .val_bits = 8, |
614 | .writeable_reg = tas2770_writeable, |
615 | .volatile_reg = tas2770_volatile, |
616 | .reg_defaults = tas2770_reg_defaults, |
617 | .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults), |
618 | .cache_type = REGCACHE_RBTREE, |
619 | .ranges = tas2770_regmap_ranges, |
620 | .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges), |
621 | .max_register = 1 * 128, |
622 | }; |
623 | |
624 | static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770) |
625 | { |
626 | int rc = 0; |
627 | |
628 | rc = fwnode_property_read_u32(fwnode: dev->fwnode, propname: "ti,imon-slot-no" , |
629 | val: &tas2770->i_sense_slot); |
630 | if (rc) { |
631 | dev_info(tas2770->dev, "Property %s is missing setting default slot\n" , |
632 | "ti,imon-slot-no" ); |
633 | |
634 | tas2770->i_sense_slot = 0; |
635 | } |
636 | |
637 | rc = fwnode_property_read_u32(fwnode: dev->fwnode, propname: "ti,vmon-slot-no" , |
638 | val: &tas2770->v_sense_slot); |
639 | if (rc) { |
640 | dev_info(tas2770->dev, "Property %s is missing setting default slot\n" , |
641 | "ti,vmon-slot-no" ); |
642 | |
643 | tas2770->v_sense_slot = 2; |
644 | } |
645 | |
646 | tas2770->sdz_gpio = devm_gpiod_get_optional(dev, con_id: "shutdown" , flags: GPIOD_OUT_HIGH); |
647 | if (IS_ERR(ptr: tas2770->sdz_gpio)) { |
648 | if (PTR_ERR(ptr: tas2770->sdz_gpio) == -EPROBE_DEFER) |
649 | return -EPROBE_DEFER; |
650 | |
651 | tas2770->sdz_gpio = NULL; |
652 | } |
653 | |
654 | return 0; |
655 | } |
656 | |
657 | static int tas2770_i2c_probe(struct i2c_client *client) |
658 | { |
659 | struct tas2770_priv *tas2770; |
660 | int result; |
661 | |
662 | tas2770 = devm_kzalloc(dev: &client->dev, size: sizeof(struct tas2770_priv), |
663 | GFP_KERNEL); |
664 | if (!tas2770) |
665 | return -ENOMEM; |
666 | |
667 | tas2770->dev = &client->dev; |
668 | i2c_set_clientdata(client, data: tas2770); |
669 | dev_set_drvdata(dev: &client->dev, data: tas2770); |
670 | |
671 | tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap); |
672 | if (IS_ERR(ptr: tas2770->regmap)) { |
673 | result = PTR_ERR(ptr: tas2770->regmap); |
674 | dev_err(&client->dev, "Failed to allocate register map: %d\n" , |
675 | result); |
676 | return result; |
677 | } |
678 | |
679 | if (client->dev.of_node) { |
680 | result = tas2770_parse_dt(dev: &client->dev, tas2770); |
681 | if (result) { |
682 | dev_err(tas2770->dev, "%s: Failed to parse devicetree\n" , |
683 | __func__); |
684 | return result; |
685 | } |
686 | } |
687 | |
688 | tas2770->reset_gpio = devm_gpiod_get_optional(dev: tas2770->dev, con_id: "reset" , |
689 | flags: GPIOD_OUT_HIGH); |
690 | if (IS_ERR(ptr: tas2770->reset_gpio)) { |
691 | if (PTR_ERR(ptr: tas2770->reset_gpio) == -EPROBE_DEFER) { |
692 | tas2770->reset_gpio = NULL; |
693 | return -EPROBE_DEFER; |
694 | } |
695 | } |
696 | |
697 | result = tas2770_register_codec(tas2770); |
698 | if (result) |
699 | dev_err(tas2770->dev, "Register codec failed.\n" ); |
700 | |
701 | return result; |
702 | } |
703 | |
704 | static const struct i2c_device_id tas2770_i2c_id[] = { |
705 | { "tas2770" , 0}, |
706 | { } |
707 | }; |
708 | MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id); |
709 | |
710 | #if defined(CONFIG_OF) |
711 | static const struct of_device_id tas2770_of_match[] = { |
712 | { .compatible = "ti,tas2770" }, |
713 | {}, |
714 | }; |
715 | MODULE_DEVICE_TABLE(of, tas2770_of_match); |
716 | #endif |
717 | |
718 | static struct i2c_driver tas2770_i2c_driver = { |
719 | .driver = { |
720 | .name = "tas2770" , |
721 | .of_match_table = of_match_ptr(tas2770_of_match), |
722 | }, |
723 | .probe = tas2770_i2c_probe, |
724 | .id_table = tas2770_i2c_id, |
725 | }; |
726 | module_i2c_driver(tas2770_i2c_driver); |
727 | |
728 | MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>" ); |
729 | MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver" ); |
730 | MODULE_LICENSE("GPL v2" ); |
731 | |