1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier |
4 | * |
5 | * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com |
6 | * |
7 | * Author: Dan Murphy <dmurphy@ti.com> |
8 | */ |
9 | |
10 | #include <linux/module.h> |
11 | #include <linux/errno.h> |
12 | #include <linux/device.h> |
13 | #include <linux/i2c.h> |
14 | #include <linux/gpio.h> |
15 | #include <linux/of_gpio.h> |
16 | #include <linux/pm_runtime.h> |
17 | #include <linux/regmap.h> |
18 | #include <linux/slab.h> |
19 | |
20 | #include <linux/gpio/consumer.h> |
21 | #include <linux/regulator/consumer.h> |
22 | |
23 | #include <sound/pcm.h> |
24 | #include <sound/pcm_params.h> |
25 | #include <sound/soc.h> |
26 | #include <sound/soc-dapm.h> |
27 | #include <sound/tlv.h> |
28 | #include <sound/tas2552-plat.h> |
29 | #include <dt-bindings/sound/tas2552.h> |
30 | |
31 | #include "tas2552.h" |
32 | |
33 | static const struct reg_default tas2552_reg_defs[] = { |
34 | {TAS2552_CFG_1, 0x22}, |
35 | {TAS2552_CFG_3, 0x80}, |
36 | {TAS2552_DOUT, 0x00}, |
37 | {TAS2552_OUTPUT_DATA, 0xc0}, |
38 | {TAS2552_PDM_CFG, 0x01}, |
39 | {TAS2552_PGA_GAIN, 0x00}, |
40 | {TAS2552_BOOST_APT_CTRL, 0x0f}, |
41 | {TAS2552_RESERVED_0D, 0xbe}, |
42 | {TAS2552_LIMIT_RATE_HYS, 0x08}, |
43 | {TAS2552_CFG_2, 0xef}, |
44 | {TAS2552_SER_CTRL_1, 0x00}, |
45 | {TAS2552_SER_CTRL_2, 0x00}, |
46 | {TAS2552_PLL_CTRL_1, 0x10}, |
47 | {TAS2552_PLL_CTRL_2, 0x00}, |
48 | {TAS2552_PLL_CTRL_3, 0x00}, |
49 | {TAS2552_BTIP, 0x8f}, |
50 | {TAS2552_BTS_CTRL, 0x80}, |
51 | {TAS2552_LIMIT_RELEASE, 0x04}, |
52 | {TAS2552_LIMIT_INT_COUNT, 0x00}, |
53 | {TAS2552_EDGE_RATE_CTRL, 0x40}, |
54 | {TAS2552_VBAT_DATA, 0x00}, |
55 | }; |
56 | |
57 | #define TAS2552_NUM_SUPPLIES 3 |
58 | static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = { |
59 | "vbat" , /* vbat voltage */ |
60 | "iovdd" , /* I/O Voltage */ |
61 | "avdd" , /* Analog DAC Voltage */ |
62 | }; |
63 | |
64 | struct tas2552_data { |
65 | struct snd_soc_component *component; |
66 | struct regmap *regmap; |
67 | struct i2c_client *tas2552_client; |
68 | struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES]; |
69 | struct gpio_desc *enable_gpio; |
70 | unsigned char regs[TAS2552_VBAT_DATA]; |
71 | unsigned int pll_clkin; |
72 | int pll_clk_id; |
73 | unsigned int pdm_clk; |
74 | int pdm_clk_id; |
75 | |
76 | unsigned int dai_fmt; |
77 | unsigned int tdm_delay; |
78 | }; |
79 | |
80 | static int tas2552_post_event(struct snd_soc_dapm_widget *w, |
81 | struct snd_kcontrol *kcontrol, int event) |
82 | { |
83 | struct snd_soc_component *component = snd_soc_dapm_to_component(dapm: w->dapm); |
84 | |
85 | switch (event) { |
86 | case SND_SOC_DAPM_POST_PMU: |
87 | snd_soc_component_write(component, TAS2552_RESERVED_0D, val: 0xc0); |
88 | snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, mask: (1 << 5), |
89 | val: (1 << 5)); |
90 | snd_soc_component_update_bits(component, TAS2552_CFG_2, mask: 1, val: 0); |
91 | snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, val: 0); |
92 | break; |
93 | case SND_SOC_DAPM_POST_PMD: |
94 | snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, |
95 | TAS2552_SWS); |
96 | snd_soc_component_update_bits(component, TAS2552_CFG_2, mask: 1, val: 1); |
97 | snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, mask: (1 << 5), val: 0); |
98 | snd_soc_component_write(component, TAS2552_RESERVED_0D, val: 0xbe); |
99 | break; |
100 | } |
101 | return 0; |
102 | } |
103 | |
104 | /* Input mux controls */ |
105 | static const char * const tas2552_input_texts[] = { |
106 | "Digital" , "Analog" }; |
107 | static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7, |
108 | tas2552_input_texts); |
109 | |
110 | static const struct snd_kcontrol_new tas2552_input_mux_control = |
111 | SOC_DAPM_ENUM("Route" , tas2552_input_mux_enum); |
112 | |
113 | static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] = |
114 | { |
115 | SND_SOC_DAPM_INPUT("IN" ), |
116 | |
117 | /* MUX Controls */ |
118 | SND_SOC_DAPM_MUX("Input selection" , SND_SOC_NOPM, 0, 0, |
119 | &tas2552_input_mux_control), |
120 | |
121 | SND_SOC_DAPM_AIF_IN("DAC IN" , "DAC Playback" , 0, SND_SOC_NOPM, 0, 0), |
122 | SND_SOC_DAPM_DAC("DAC" , NULL, SND_SOC_NOPM, 0, 0), |
123 | SND_SOC_DAPM_OUT_DRV("ClassD" , TAS2552_CFG_2, 7, 0, NULL, 0), |
124 | SND_SOC_DAPM_SUPPLY("PLL" , TAS2552_CFG_2, 3, 0, NULL, 0), |
125 | SND_SOC_DAPM_POST("Post Event" , tas2552_post_event), |
126 | |
127 | SND_SOC_DAPM_OUTPUT("OUT" ) |
128 | }; |
129 | |
130 | static const struct snd_soc_dapm_route tas2552_audio_map[] = { |
131 | {"DAC" , NULL, "DAC IN" }, |
132 | {"Input selection" , "Digital" , "DAC" }, |
133 | {"Input selection" , "Analog" , "IN" }, |
134 | {"ClassD" , NULL, "Input selection" }, |
135 | {"OUT" , NULL, "ClassD" }, |
136 | {"ClassD" , NULL, "PLL" }, |
137 | }; |
138 | |
139 | #ifdef CONFIG_PM |
140 | static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown) |
141 | { |
142 | u8 cfg1_reg = 0; |
143 | |
144 | if (!tas2552->component) |
145 | return; |
146 | |
147 | if (sw_shutdown) |
148 | cfg1_reg = TAS2552_SWS; |
149 | |
150 | snd_soc_component_update_bits(component: tas2552->component, TAS2552_CFG_1, TAS2552_SWS, |
151 | val: cfg1_reg); |
152 | } |
153 | #endif |
154 | |
155 | static int tas2552_setup_pll(struct snd_soc_component *component, |
156 | struct snd_pcm_hw_params *params) |
157 | { |
158 | struct tas2552_data *tas2552 = dev_get_drvdata(dev: component->dev); |
159 | bool bypass_pll = false; |
160 | unsigned int pll_clk = params_rate(p: params) * 512; |
161 | unsigned int pll_clkin = tas2552->pll_clkin; |
162 | u8 pll_enable; |
163 | |
164 | if (!pll_clkin) { |
165 | if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK) |
166 | return -EINVAL; |
167 | |
168 | pll_clkin = snd_soc_params_to_bclk(parms: params); |
169 | pll_clkin += tas2552->tdm_delay; |
170 | } |
171 | |
172 | pll_enable = snd_soc_component_read(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE; |
173 | snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, val: 0); |
174 | |
175 | if (pll_clkin == pll_clk) |
176 | bypass_pll = true; |
177 | |
178 | if (bypass_pll) { |
179 | /* By pass the PLL configuration */ |
180 | snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2, |
181 | TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS); |
182 | } else { |
183 | /* Fill in the PLL control registers for J & D |
184 | * pll_clk = (.5 * pll_clkin * J.D) / 2^p |
185 | * Need to fill in J and D here based on incoming freq |
186 | */ |
187 | unsigned int d, q, t; |
188 | u8 j; |
189 | u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK; |
190 | u8 p = snd_soc_component_read(component, TAS2552_PLL_CTRL_1); |
191 | |
192 | p = (p >> 7); |
193 | |
194 | recalc: |
195 | t = (pll_clk * 2) << p; |
196 | j = t / pll_clkin; |
197 | d = t % pll_clkin; |
198 | t = pll_clkin / 10000; |
199 | q = d / (t + 1); |
200 | d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000; |
201 | |
202 | if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) { |
203 | if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) { |
204 | pll_clkin = 1800000; |
205 | pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) & |
206 | TAS2552_PLL_SRC_MASK; |
207 | } else { |
208 | pll_clkin = snd_soc_params_to_bclk(parms: params); |
209 | pll_clkin += tas2552->tdm_delay; |
210 | pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) & |
211 | TAS2552_PLL_SRC_MASK; |
212 | } |
213 | goto recalc; |
214 | } |
215 | |
216 | snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK, |
217 | val: pll_sel); |
218 | |
219 | snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1, |
220 | TAS2552_PLL_J_MASK, val: j); |
221 | /* Will clear the PLL_BYPASS bit */ |
222 | snd_soc_component_write(component, TAS2552_PLL_CTRL_2, |
223 | TAS2552_PLL_D_UPPER(d)); |
224 | snd_soc_component_write(component, TAS2552_PLL_CTRL_3, |
225 | TAS2552_PLL_D_LOWER(d)); |
226 | } |
227 | |
228 | /* Restore PLL status */ |
229 | snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, |
230 | val: pll_enable); |
231 | |
232 | return 0; |
233 | } |
234 | |
235 | static int tas2552_hw_params(struct snd_pcm_substream *substream, |
236 | struct snd_pcm_hw_params *params, |
237 | struct snd_soc_dai *dai) |
238 | { |
239 | struct snd_soc_component *component = dai->component; |
240 | struct tas2552_data *tas2552 = dev_get_drvdata(dev: component->dev); |
241 | int cpf; |
242 | u8 ser_ctrl1_reg, wclk_rate; |
243 | |
244 | switch (params_width(p: params)) { |
245 | case 16: |
246 | ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT; |
247 | cpf = 32 + tas2552->tdm_delay; |
248 | break; |
249 | case 20: |
250 | ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT; |
251 | cpf = 64 + tas2552->tdm_delay; |
252 | break; |
253 | case 24: |
254 | ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT; |
255 | cpf = 64 + tas2552->tdm_delay; |
256 | break; |
257 | case 32: |
258 | ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT; |
259 | cpf = 64 + tas2552->tdm_delay; |
260 | break; |
261 | default: |
262 | dev_err(component->dev, "Not supported sample size: %d\n" , |
263 | params_width(params)); |
264 | return -EINVAL; |
265 | } |
266 | |
267 | if (cpf <= 32) |
268 | ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32; |
269 | else if (cpf <= 64) |
270 | ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64; |
271 | else if (cpf <= 128) |
272 | ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128; |
273 | else |
274 | ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256; |
275 | |
276 | snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, |
277 | TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK, |
278 | val: ser_ctrl1_reg); |
279 | |
280 | switch (params_rate(p: params)) { |
281 | case 8000: |
282 | wclk_rate = TAS2552_WCLK_FREQ_8KHZ; |
283 | break; |
284 | case 11025: |
285 | case 12000: |
286 | wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ; |
287 | break; |
288 | case 16000: |
289 | wclk_rate = TAS2552_WCLK_FREQ_16KHZ; |
290 | break; |
291 | case 22050: |
292 | case 24000: |
293 | wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ; |
294 | break; |
295 | case 32000: |
296 | wclk_rate = TAS2552_WCLK_FREQ_32KHZ; |
297 | break; |
298 | case 44100: |
299 | case 48000: |
300 | wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ; |
301 | break; |
302 | case 88200: |
303 | case 96000: |
304 | wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ; |
305 | break; |
306 | case 176400: |
307 | case 192000: |
308 | wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ; |
309 | break; |
310 | default: |
311 | dev_err(component->dev, "Not supported sample rate: %d\n" , |
312 | params_rate(params)); |
313 | return -EINVAL; |
314 | } |
315 | |
316 | snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK, |
317 | val: wclk_rate); |
318 | |
319 | return tas2552_setup_pll(component, params); |
320 | } |
321 | |
322 | #define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \ |
323 | TAS2552_WCLKDIR | \ |
324 | TAS2552_DATAFORMAT_MASK) |
325 | static int tas2552_prepare(struct snd_pcm_substream *substream, |
326 | struct snd_soc_dai *dai) |
327 | { |
328 | struct snd_soc_component *component = dai->component; |
329 | struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(c: component); |
330 | int delay = 0; |
331 | |
332 | /* TDM slot selection only valid in DSP_A/_B mode */ |
333 | if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A) |
334 | delay += (tas2552->tdm_delay + 1); |
335 | else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B) |
336 | delay += tas2552->tdm_delay; |
337 | |
338 | /* Configure data delay */ |
339 | snd_soc_component_write(component, TAS2552_SER_CTRL_2, val: delay); |
340 | |
341 | return 0; |
342 | } |
343 | |
344 | static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
345 | { |
346 | struct snd_soc_component *component = dai->component; |
347 | struct tas2552_data *tas2552 = dev_get_drvdata(dev: component->dev); |
348 | u8 serial_format; |
349 | |
350 | switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { |
351 | case SND_SOC_DAIFMT_CBC_CFC: |
352 | serial_format = 0x00; |
353 | break; |
354 | case SND_SOC_DAIFMT_CBC_CFP: |
355 | serial_format = TAS2552_WCLKDIR; |
356 | break; |
357 | case SND_SOC_DAIFMT_CBP_CFC: |
358 | serial_format = TAS2552_BCLKDIR; |
359 | break; |
360 | case SND_SOC_DAIFMT_CBP_CFP: |
361 | serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR); |
362 | break; |
363 | default: |
364 | dev_vdbg(component->dev, "DAI Format master is not found\n" ); |
365 | return -EINVAL; |
366 | } |
367 | |
368 | switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK | |
369 | SND_SOC_DAIFMT_INV_MASK)) { |
370 | case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF): |
371 | break; |
372 | case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF): |
373 | case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF): |
374 | serial_format |= TAS2552_DATAFORMAT_DSP; |
375 | break; |
376 | case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF): |
377 | serial_format |= TAS2552_DATAFORMAT_RIGHT_J; |
378 | break; |
379 | case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF): |
380 | serial_format |= TAS2552_DATAFORMAT_LEFT_J; |
381 | break; |
382 | default: |
383 | dev_vdbg(component->dev, "DAI Format is not found\n" ); |
384 | return -EINVAL; |
385 | } |
386 | tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; |
387 | |
388 | snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK, |
389 | val: serial_format); |
390 | return 0; |
391 | } |
392 | |
393 | static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, |
394 | unsigned int freq, int dir) |
395 | { |
396 | struct snd_soc_component *component = dai->component; |
397 | struct tas2552_data *tas2552 = dev_get_drvdata(dev: component->dev); |
398 | u8 reg, mask, val; |
399 | |
400 | switch (clk_id) { |
401 | case TAS2552_PLL_CLKIN_MCLK: |
402 | case TAS2552_PLL_CLKIN_IVCLKIN: |
403 | if (freq < 512000 || freq > 24576000) { |
404 | /* out of range PLL_CLKIN, fall back to use BCLK */ |
405 | dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n" , |
406 | freq); |
407 | clk_id = TAS2552_PLL_CLKIN_BCLK; |
408 | freq = 0; |
409 | } |
410 | fallthrough; |
411 | case TAS2552_PLL_CLKIN_BCLK: |
412 | case TAS2552_PLL_CLKIN_1_8_FIXED: |
413 | mask = TAS2552_PLL_SRC_MASK; |
414 | val = (clk_id << 3) & mask; /* bit 4:5 in the register */ |
415 | reg = TAS2552_CFG_1; |
416 | tas2552->pll_clk_id = clk_id; |
417 | tas2552->pll_clkin = freq; |
418 | break; |
419 | case TAS2552_PDM_CLK_PLL: |
420 | case TAS2552_PDM_CLK_IVCLKIN: |
421 | case TAS2552_PDM_CLK_BCLK: |
422 | case TAS2552_PDM_CLK_MCLK: |
423 | mask = TAS2552_PDM_CLK_SEL_MASK; |
424 | val = (clk_id >> 1) & mask; /* bit 0:1 in the register */ |
425 | reg = TAS2552_PDM_CFG; |
426 | tas2552->pdm_clk_id = clk_id; |
427 | tas2552->pdm_clk = freq; |
428 | break; |
429 | default: |
430 | dev_err(component->dev, "Invalid clk id: %d\n" , clk_id); |
431 | return -EINVAL; |
432 | } |
433 | |
434 | snd_soc_component_update_bits(component, reg, mask, val); |
435 | |
436 | return 0; |
437 | } |
438 | |
439 | static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai, |
440 | unsigned int tx_mask, unsigned int rx_mask, |
441 | int slots, int slot_width) |
442 | { |
443 | struct snd_soc_component *component = dai->component; |
444 | struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(c: component); |
445 | unsigned int lsb; |
446 | |
447 | if (unlikely(!tx_mask)) { |
448 | dev_err(component->dev, "tx masks need to be non 0\n" ); |
449 | return -EINVAL; |
450 | } |
451 | |
452 | /* TDM based on DSP mode requires slots to be adjacent */ |
453 | lsb = __ffs(tx_mask); |
454 | if ((lsb + 1) != __fls(word: tx_mask)) { |
455 | dev_err(component->dev, "Invalid mask, slots must be adjacent\n" ); |
456 | return -EINVAL; |
457 | } |
458 | |
459 | tas2552->tdm_delay = lsb * slot_width; |
460 | |
461 | /* DOUT in high-impedance on inactive bit clocks */ |
462 | snd_soc_component_update_bits(component, TAS2552_DOUT, |
463 | TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE); |
464 | |
465 | return 0; |
466 | } |
467 | |
468 | static int tas2552_mute(struct snd_soc_dai *dai, int mute, int direction) |
469 | { |
470 | u8 cfg1_reg = 0; |
471 | struct snd_soc_component *component = dai->component; |
472 | |
473 | if (mute) |
474 | cfg1_reg |= TAS2552_MUTE; |
475 | |
476 | snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, val: cfg1_reg); |
477 | |
478 | return 0; |
479 | } |
480 | |
481 | #ifdef CONFIG_PM |
482 | static int tas2552_runtime_suspend(struct device *dev) |
483 | { |
484 | struct tas2552_data *tas2552 = dev_get_drvdata(dev); |
485 | |
486 | tas2552_sw_shutdown(tas2552, sw_shutdown: 1); |
487 | |
488 | regcache_cache_only(map: tas2552->regmap, enable: true); |
489 | regcache_mark_dirty(map: tas2552->regmap); |
490 | |
491 | gpiod_set_value(desc: tas2552->enable_gpio, value: 0); |
492 | |
493 | return 0; |
494 | } |
495 | |
496 | static int tas2552_runtime_resume(struct device *dev) |
497 | { |
498 | struct tas2552_data *tas2552 = dev_get_drvdata(dev); |
499 | |
500 | gpiod_set_value(desc: tas2552->enable_gpio, value: 1); |
501 | |
502 | tas2552_sw_shutdown(tas2552, sw_shutdown: 0); |
503 | |
504 | regcache_cache_only(map: tas2552->regmap, enable: false); |
505 | regcache_sync(map: tas2552->regmap); |
506 | |
507 | return 0; |
508 | } |
509 | #endif |
510 | |
511 | static const struct dev_pm_ops tas2552_pm = { |
512 | SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume, |
513 | NULL) |
514 | }; |
515 | |
516 | static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = { |
517 | .hw_params = tas2552_hw_params, |
518 | .prepare = tas2552_prepare, |
519 | .set_sysclk = tas2552_set_dai_sysclk, |
520 | .set_fmt = tas2552_set_dai_fmt, |
521 | .set_tdm_slot = tas2552_set_dai_tdm_slot, |
522 | .mute_stream = tas2552_mute, |
523 | .no_capture_mute = 1, |
524 | }; |
525 | |
526 | /* Formats supported by TAS2552 driver. */ |
527 | #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
528 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
529 | |
530 | /* TAS2552 dai structure. */ |
531 | static struct snd_soc_dai_driver tas2552_dai[] = { |
532 | { |
533 | .name = "tas2552-amplifier" , |
534 | .playback = { |
535 | .stream_name = "Playback" , |
536 | .channels_min = 2, |
537 | .channels_max = 2, |
538 | .rates = SNDRV_PCM_RATE_8000_192000, |
539 | .formats = TAS2552_FORMATS, |
540 | }, |
541 | .ops = &tas2552_speaker_dai_ops, |
542 | }, |
543 | }; |
544 | |
545 | /* |
546 | * DAC digital volumes. From -7 to 24 dB in 1 dB steps |
547 | */ |
548 | static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0); |
549 | |
550 | static const char * const tas2552_din_source_select[] = { |
551 | "Muted" , |
552 | "Left" , |
553 | "Right" , |
554 | "Left + Right average" , |
555 | }; |
556 | static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum, |
557 | TAS2552_CFG_3, 3, |
558 | tas2552_din_source_select); |
559 | |
560 | static const struct snd_kcontrol_new tas2552_snd_controls[] = { |
561 | SOC_SINGLE_TLV("Speaker Driver Playback Volume" , |
562 | TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv), |
563 | SOC_ENUM("DIN source" , tas2552_din_source_enum), |
564 | }; |
565 | |
566 | static int tas2552_component_probe(struct snd_soc_component *component) |
567 | { |
568 | struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(c: component); |
569 | int ret; |
570 | |
571 | tas2552->component = component; |
572 | |
573 | ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), |
574 | consumers: tas2552->supplies); |
575 | |
576 | if (ret != 0) { |
577 | dev_err(component->dev, "Failed to enable supplies: %d\n" , |
578 | ret); |
579 | return ret; |
580 | } |
581 | |
582 | gpiod_set_value(desc: tas2552->enable_gpio, value: 1); |
583 | |
584 | ret = pm_runtime_resume_and_get(dev: component->dev); |
585 | if (ret < 0) { |
586 | dev_err(component->dev, "Enabling device failed: %d\n" , |
587 | ret); |
588 | goto probe_fail; |
589 | } |
590 | |
591 | snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE); |
592 | snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL | |
593 | TAS2552_DIN_SRC_SEL_AVG_L_R); |
594 | snd_soc_component_write(component, TAS2552_OUTPUT_DATA, |
595 | TAS2552_PDM_DATA_SEL_V_I | |
596 | TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA)); |
597 | snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 | |
598 | TAS2552_APT_THRESH_20_17); |
599 | |
600 | snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN | |
601 | TAS2552_LIM_EN); |
602 | |
603 | return 0; |
604 | |
605 | probe_fail: |
606 | pm_runtime_put_noidle(dev: component->dev); |
607 | gpiod_set_value(desc: tas2552->enable_gpio, value: 0); |
608 | |
609 | regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), |
610 | consumers: tas2552->supplies); |
611 | return ret; |
612 | } |
613 | |
614 | static void tas2552_component_remove(struct snd_soc_component *component) |
615 | { |
616 | struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(c: component); |
617 | |
618 | pm_runtime_put(dev: component->dev); |
619 | |
620 | gpiod_set_value(desc: tas2552->enable_gpio, value: 0); |
621 | }; |
622 | |
623 | #ifdef CONFIG_PM |
624 | static int tas2552_suspend(struct snd_soc_component *component) |
625 | { |
626 | struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(c: component); |
627 | int ret; |
628 | |
629 | ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), |
630 | consumers: tas2552->supplies); |
631 | |
632 | if (ret != 0) |
633 | dev_err(component->dev, "Failed to disable supplies: %d\n" , |
634 | ret); |
635 | return ret; |
636 | } |
637 | |
638 | static int tas2552_resume(struct snd_soc_component *component) |
639 | { |
640 | struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(c: component); |
641 | int ret; |
642 | |
643 | ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), |
644 | consumers: tas2552->supplies); |
645 | |
646 | if (ret != 0) { |
647 | dev_err(component->dev, "Failed to enable supplies: %d\n" , |
648 | ret); |
649 | } |
650 | |
651 | return ret; |
652 | } |
653 | #else |
654 | #define tas2552_suspend NULL |
655 | #define tas2552_resume NULL |
656 | #endif |
657 | |
658 | static const struct snd_soc_component_driver soc_component_dev_tas2552 = { |
659 | .probe = tas2552_component_probe, |
660 | .remove = tas2552_component_remove, |
661 | .suspend = tas2552_suspend, |
662 | .resume = tas2552_resume, |
663 | .controls = tas2552_snd_controls, |
664 | .num_controls = ARRAY_SIZE(tas2552_snd_controls), |
665 | .dapm_widgets = tas2552_dapm_widgets, |
666 | .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets), |
667 | .dapm_routes = tas2552_audio_map, |
668 | .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map), |
669 | .idle_bias_on = 1, |
670 | .endianness = 1, |
671 | }; |
672 | |
673 | static const struct regmap_config tas2552_regmap_config = { |
674 | .reg_bits = 8, |
675 | .val_bits = 8, |
676 | |
677 | .max_register = TAS2552_MAX_REG, |
678 | .reg_defaults = tas2552_reg_defs, |
679 | .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs), |
680 | .cache_type = REGCACHE_RBTREE, |
681 | }; |
682 | |
683 | static int tas2552_probe(struct i2c_client *client) |
684 | { |
685 | struct device *dev; |
686 | struct tas2552_data *data; |
687 | int ret; |
688 | int i; |
689 | |
690 | dev = &client->dev; |
691 | data = devm_kzalloc(dev: &client->dev, size: sizeof(*data), GFP_KERNEL); |
692 | if (data == NULL) |
693 | return -ENOMEM; |
694 | |
695 | data->enable_gpio = devm_gpiod_get_optional(dev, con_id: "enable" , |
696 | flags: GPIOD_OUT_LOW); |
697 | if (IS_ERR(ptr: data->enable_gpio)) |
698 | return PTR_ERR(ptr: data->enable_gpio); |
699 | |
700 | data->tas2552_client = client; |
701 | data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config); |
702 | if (IS_ERR(ptr: data->regmap)) { |
703 | ret = PTR_ERR(ptr: data->regmap); |
704 | dev_err(&client->dev, "Failed to allocate register map: %d\n" , |
705 | ret); |
706 | return ret; |
707 | } |
708 | |
709 | for (i = 0; i < ARRAY_SIZE(data->supplies); i++) |
710 | data->supplies[i].supply = tas2552_supply_names[i]; |
711 | |
712 | ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), |
713 | consumers: data->supplies); |
714 | if (ret != 0) { |
715 | dev_err(dev, "Failed to request supplies: %d\n" , ret); |
716 | return ret; |
717 | } |
718 | |
719 | pm_runtime_set_active(dev: &client->dev); |
720 | pm_runtime_set_autosuspend_delay(dev: &client->dev, delay: 1000); |
721 | pm_runtime_use_autosuspend(dev: &client->dev); |
722 | pm_runtime_enable(dev: &client->dev); |
723 | pm_runtime_mark_last_busy(dev: &client->dev); |
724 | pm_runtime_put_sync_autosuspend(dev: &client->dev); |
725 | |
726 | dev_set_drvdata(dev: &client->dev, data); |
727 | |
728 | ret = devm_snd_soc_register_component(dev: &client->dev, |
729 | component_driver: &soc_component_dev_tas2552, |
730 | dai_drv: tas2552_dai, ARRAY_SIZE(tas2552_dai)); |
731 | if (ret < 0) { |
732 | dev_err(&client->dev, "Failed to register component: %d\n" , ret); |
733 | pm_runtime_get_noresume(dev: &client->dev); |
734 | } |
735 | |
736 | return ret; |
737 | } |
738 | |
739 | static void tas2552_i2c_remove(struct i2c_client *client) |
740 | { |
741 | pm_runtime_disable(dev: &client->dev); |
742 | } |
743 | |
744 | static const struct i2c_device_id tas2552_id[] = { |
745 | { "tas2552" , 0 }, |
746 | { } |
747 | }; |
748 | MODULE_DEVICE_TABLE(i2c, tas2552_id); |
749 | |
750 | #if IS_ENABLED(CONFIG_OF) |
751 | static const struct of_device_id tas2552_of_match[] = { |
752 | { .compatible = "ti,tas2552" , }, |
753 | {}, |
754 | }; |
755 | MODULE_DEVICE_TABLE(of, tas2552_of_match); |
756 | #endif |
757 | |
758 | static struct i2c_driver tas2552_i2c_driver = { |
759 | .driver = { |
760 | .name = "tas2552" , |
761 | .of_match_table = of_match_ptr(tas2552_of_match), |
762 | .pm = &tas2552_pm, |
763 | }, |
764 | .probe = tas2552_probe, |
765 | .remove = tas2552_i2c_remove, |
766 | .id_table = tas2552_id, |
767 | }; |
768 | |
769 | module_i2c_driver(tas2552_i2c_driver); |
770 | |
771 | MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>" ); |
772 | MODULE_DESCRIPTION("TAS2552 Audio amplifier driver" ); |
773 | MODULE_LICENSE("GPL" ); |
774 | |