1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * cs35l33.c -- CS35L33 ALSA SoC audio driver
4 *
5 * Copyright 2016 Cirrus Logic, Inc.
6 *
7 * Author: Paul Handrigan <paul.handrigan@cirrus.com>
8 */
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/delay.h>
14 #include <linux/i2c.h>
15 #include <linux/slab.h>
16 #include <linux/workqueue.h>
17 #include <linux/platform_device.h>
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/pcm_params.h>
21 #include <sound/soc.h>
22 #include <sound/soc-dapm.h>
23 #include <sound/initval.h>
24 #include <sound/tlv.h>
25 #include <linux/gpio/consumer.h>
26 #include <sound/cs35l33.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/regulator/consumer.h>
29 #include <linux/regulator/machine.h>
30 #include <linux/of.h>
31
32 #include "cs35l33.h"
33 #include "cirrus_legacy.h"
34
35 #define CS35L33_BOOT_DELAY 50
36
37 struct cs35l33_private {
38 struct snd_soc_component *component;
39 struct cs35l33_pdata pdata;
40 struct regmap *regmap;
41 struct gpio_desc *reset_gpio;
42 bool amp_cal;
43 int mclk_int;
44 struct regulator_bulk_data core_supplies[2];
45 int num_core_supplies;
46 bool is_tdm_mode;
47 bool enable_soft_ramp;
48 };
49
50 static const struct reg_default cs35l33_reg[] = {
51 {CS35L33_PWRCTL1, 0x85},
52 {CS35L33_PWRCTL2, 0xFE},
53 {CS35L33_CLK_CTL, 0x0C},
54 {CS35L33_BST_PEAK_CTL, 0x90},
55 {CS35L33_PROTECT_CTL, 0x55},
56 {CS35L33_BST_CTL1, 0x00},
57 {CS35L33_BST_CTL2, 0x01},
58 {CS35L33_ADSP_CTL, 0x00},
59 {CS35L33_ADC_CTL, 0xC8},
60 {CS35L33_DAC_CTL, 0x14},
61 {CS35L33_DIG_VOL_CTL, 0x00},
62 {CS35L33_CLASSD_CTL, 0x04},
63 {CS35L33_AMP_CTL, 0x90},
64 {CS35L33_INT_MASK_1, 0xFF},
65 {CS35L33_INT_MASK_2, 0xFF},
66 {CS35L33_DIAG_LOCK, 0x00},
67 {CS35L33_DIAG_CTRL_1, 0x40},
68 {CS35L33_DIAG_CTRL_2, 0x00},
69 {CS35L33_HG_MEMLDO_CTL, 0x62},
70 {CS35L33_HG_REL_RATE, 0x03},
71 {CS35L33_LDO_DEL, 0x12},
72 {CS35L33_HG_HEAD, 0x0A},
73 {CS35L33_HG_EN, 0x05},
74 {CS35L33_TX_VMON, 0x00},
75 {CS35L33_TX_IMON, 0x03},
76 {CS35L33_TX_VPMON, 0x02},
77 {CS35L33_TX_VBSTMON, 0x05},
78 {CS35L33_TX_FLAG, 0x06},
79 {CS35L33_TX_EN1, 0x00},
80 {CS35L33_TX_EN2, 0x00},
81 {CS35L33_TX_EN3, 0x00},
82 {CS35L33_TX_EN4, 0x00},
83 {CS35L33_RX_AUD, 0x40},
84 {CS35L33_RX_SPLY, 0x03},
85 {CS35L33_RX_ALIVE, 0x04},
86 {CS35L33_BST_CTL4, 0x63},
87 };
88
89 static const struct reg_sequence cs35l33_patch[] = {
90 { 0x00, 0x99, 0 },
91 { 0x59, 0x02, 0 },
92 { 0x52, 0x30, 0 },
93 { 0x39, 0x45, 0 },
94 { 0x57, 0x30, 0 },
95 { 0x2C, 0x68, 0 },
96 { 0x00, 0x00, 0 },
97 };
98
cs35l33_volatile_register(struct device * dev,unsigned int reg)99 static bool cs35l33_volatile_register(struct device *dev, unsigned int reg)
100 {
101 switch (reg) {
102 case CS35L33_DEVID_AB:
103 case CS35L33_DEVID_CD:
104 case CS35L33_DEVID_E:
105 case CS35L33_REV_ID:
106 case CS35L33_INT_STATUS_1:
107 case CS35L33_INT_STATUS_2:
108 case CS35L33_HG_STATUS:
109 return true;
110 default:
111 return false;
112 }
113 }
114
cs35l33_writeable_register(struct device * dev,unsigned int reg)115 static bool cs35l33_writeable_register(struct device *dev, unsigned int reg)
116 {
117 switch (reg) {
118 /* these are read only registers */
119 case CS35L33_DEVID_AB:
120 case CS35L33_DEVID_CD:
121 case CS35L33_DEVID_E:
122 case CS35L33_REV_ID:
123 case CS35L33_INT_STATUS_1:
124 case CS35L33_INT_STATUS_2:
125 case CS35L33_HG_STATUS:
126 return false;
127 default:
128 return true;
129 }
130 }
131
cs35l33_readable_register(struct device * dev,unsigned int reg)132 static bool cs35l33_readable_register(struct device *dev, unsigned int reg)
133 {
134 switch (reg) {
135 case CS35L33_DEVID_AB:
136 case CS35L33_DEVID_CD:
137 case CS35L33_DEVID_E:
138 case CS35L33_REV_ID:
139 case CS35L33_PWRCTL1:
140 case CS35L33_PWRCTL2:
141 case CS35L33_CLK_CTL:
142 case CS35L33_BST_PEAK_CTL:
143 case CS35L33_PROTECT_CTL:
144 case CS35L33_BST_CTL1:
145 case CS35L33_BST_CTL2:
146 case CS35L33_ADSP_CTL:
147 case CS35L33_ADC_CTL:
148 case CS35L33_DAC_CTL:
149 case CS35L33_DIG_VOL_CTL:
150 case CS35L33_CLASSD_CTL:
151 case CS35L33_AMP_CTL:
152 case CS35L33_INT_MASK_1:
153 case CS35L33_INT_MASK_2:
154 case CS35L33_INT_STATUS_1:
155 case CS35L33_INT_STATUS_2:
156 case CS35L33_DIAG_LOCK:
157 case CS35L33_DIAG_CTRL_1:
158 case CS35L33_DIAG_CTRL_2:
159 case CS35L33_HG_MEMLDO_CTL:
160 case CS35L33_HG_REL_RATE:
161 case CS35L33_LDO_DEL:
162 case CS35L33_HG_HEAD:
163 case CS35L33_HG_EN:
164 case CS35L33_TX_VMON:
165 case CS35L33_TX_IMON:
166 case CS35L33_TX_VPMON:
167 case CS35L33_TX_VBSTMON:
168 case CS35L33_TX_FLAG:
169 case CS35L33_TX_EN1:
170 case CS35L33_TX_EN2:
171 case CS35L33_TX_EN3:
172 case CS35L33_TX_EN4:
173 case CS35L33_RX_AUD:
174 case CS35L33_RX_SPLY:
175 case CS35L33_RX_ALIVE:
176 case CS35L33_BST_CTL4:
177 return true;
178 default:
179 return false;
180 }
181 }
182
183 static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 100, 0);
184 static DECLARE_TLV_DB_SCALE(dac_tlv, -10200, 50, 0);
185
186 static const struct snd_kcontrol_new cs35l33_snd_controls[] = {
187
188 SOC_SINGLE_TLV("SPK Amp Volume", CS35L33_AMP_CTL,
189 4, 0x09, 0, classd_ctl_tlv),
190 SOC_SINGLE_SX_TLV("DAC Volume", CS35L33_DIG_VOL_CTL,
191 0, 0x34, 0xE4, dac_tlv),
192 };
193
cs35l33_spkrdrv_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)194 static int cs35l33_spkrdrv_event(struct snd_soc_dapm_widget *w,
195 struct snd_kcontrol *kcontrol, int event)
196 {
197 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
198 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
199
200 switch (event) {
201 case SND_SOC_DAPM_POST_PMU:
202 if (!priv->amp_cal) {
203 usleep_range(8000, 9000);
204 priv->amp_cal = true;
205 regmap_update_bits(priv->regmap, CS35L33_CLASSD_CTL,
206 CS35L33_AMP_CAL, 0);
207 dev_dbg(component->dev, "Amp calibration done\n");
208 }
209 dev_dbg(component->dev, "Amp turned on\n");
210 break;
211 case SND_SOC_DAPM_POST_PMD:
212 dev_dbg(component->dev, "Amp turned off\n");
213 break;
214 default:
215 dev_err(component->dev, "Invalid event = 0x%x\n", event);
216 break;
217 }
218
219 return 0;
220 }
221
cs35l33_sdin_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)222 static int cs35l33_sdin_event(struct snd_soc_dapm_widget *w,
223 struct snd_kcontrol *kcontrol, int event)
224 {
225 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
226 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
227 unsigned int val;
228
229 switch (event) {
230 case SND_SOC_DAPM_PRE_PMU:
231 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
232 CS35L33_PDN_BST, 0);
233 val = priv->is_tdm_mode ? 0 : CS35L33_PDN_TDM;
234 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
235 CS35L33_PDN_TDM, val);
236 dev_dbg(component->dev, "BST turned on\n");
237 break;
238 case SND_SOC_DAPM_POST_PMU:
239 dev_dbg(component->dev, "SDIN turned on\n");
240 if (!priv->amp_cal) {
241 regmap_update_bits(priv->regmap, CS35L33_CLASSD_CTL,
242 CS35L33_AMP_CAL, CS35L33_AMP_CAL);
243 dev_dbg(component->dev, "Amp calibration started\n");
244 usleep_range(10000, 11000);
245 }
246 break;
247 case SND_SOC_DAPM_POST_PMD:
248 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
249 CS35L33_PDN_TDM, CS35L33_PDN_TDM);
250 usleep_range(4000, 4100);
251 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
252 CS35L33_PDN_BST, CS35L33_PDN_BST);
253 dev_dbg(component->dev, "BST and SDIN turned off\n");
254 break;
255 default:
256 dev_err(component->dev, "Invalid event = 0x%x\n", event);
257
258 }
259
260 return 0;
261 }
262
cs35l33_sdout_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)263 static int cs35l33_sdout_event(struct snd_soc_dapm_widget *w,
264 struct snd_kcontrol *kcontrol, int event)
265 {
266 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
267 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
268 unsigned int mask = CS35L33_SDOUT_3ST_I2S | CS35L33_PDN_TDM;
269 unsigned int mask2 = CS35L33_SDOUT_3ST_TDM;
270 unsigned int val, val2;
271
272 switch (event) {
273 case SND_SOC_DAPM_PRE_PMU:
274 if (priv->is_tdm_mode) {
275 /* set sdout_3st_i2s and reset pdn_tdm */
276 val = CS35L33_SDOUT_3ST_I2S;
277 /* reset sdout_3st_tdm */
278 val2 = 0;
279 } else {
280 /* reset sdout_3st_i2s and set pdn_tdm */
281 val = CS35L33_PDN_TDM;
282 /* set sdout_3st_tdm */
283 val2 = CS35L33_SDOUT_3ST_TDM;
284 }
285 dev_dbg(component->dev, "SDOUT turned on\n");
286 break;
287 case SND_SOC_DAPM_PRE_PMD:
288 val = CS35L33_SDOUT_3ST_I2S | CS35L33_PDN_TDM;
289 val2 = CS35L33_SDOUT_3ST_TDM;
290 dev_dbg(component->dev, "SDOUT turned off\n");
291 break;
292 default:
293 dev_err(component->dev, "Invalid event = 0x%x\n", event);
294 return 0;
295 }
296
297 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
298 mask, val);
299 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
300 mask2, val2);
301
302 return 0;
303 }
304
305 static const struct snd_soc_dapm_widget cs35l33_dapm_widgets[] = {
306
307 SND_SOC_DAPM_OUTPUT("SPK"),
308 SND_SOC_DAPM_OUT_DRV_E("SPKDRV", CS35L33_PWRCTL1, 7, 1, NULL, 0,
309 cs35l33_spkrdrv_event,
310 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
311 SND_SOC_DAPM_AIF_IN_E("SDIN", NULL, 0, CS35L33_PWRCTL2,
312 2, 1, cs35l33_sdin_event, SND_SOC_DAPM_PRE_PMU |
313 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
314
315 SND_SOC_DAPM_INPUT("MON"),
316
317 SND_SOC_DAPM_ADC("VMON", NULL,
318 CS35L33_PWRCTL2, CS35L33_PDN_VMON_SHIFT, 1),
319 SND_SOC_DAPM_ADC("IMON", NULL,
320 CS35L33_PWRCTL2, CS35L33_PDN_IMON_SHIFT, 1),
321 SND_SOC_DAPM_ADC("VPMON", NULL,
322 CS35L33_PWRCTL2, CS35L33_PDN_VPMON_SHIFT, 1),
323 SND_SOC_DAPM_ADC("VBSTMON", NULL,
324 CS35L33_PWRCTL2, CS35L33_PDN_VBSTMON_SHIFT, 1),
325
326 SND_SOC_DAPM_AIF_OUT_E("SDOUT", NULL, 0, SND_SOC_NOPM, 0, 0,
327 cs35l33_sdout_event, SND_SOC_DAPM_PRE_PMU |
328 SND_SOC_DAPM_PRE_PMD),
329 };
330
331 static const struct snd_soc_dapm_route cs35l33_audio_map[] = {
332 {"SDIN", NULL, "CS35L33 Playback"},
333 {"SPKDRV", NULL, "SDIN"},
334 {"SPK", NULL, "SPKDRV"},
335
336 {"VMON", NULL, "MON"},
337 {"IMON", NULL, "MON"},
338
339 {"SDOUT", NULL, "VMON"},
340 {"SDOUT", NULL, "IMON"},
341 {"CS35L33 Capture", NULL, "SDOUT"},
342 };
343
344 static const struct snd_soc_dapm_route cs35l33_vphg_auto_route[] = {
345 {"SPKDRV", NULL, "VPMON"},
346 {"VPMON", NULL, "CS35L33 Playback"},
347 };
348
349 static const struct snd_soc_dapm_route cs35l33_vp_vbst_mon_route[] = {
350 {"SDOUT", NULL, "VPMON"},
351 {"VPMON", NULL, "MON"},
352 {"SDOUT", NULL, "VBSTMON"},
353 {"VBSTMON", NULL, "MON"},
354 };
355
cs35l33_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)356 static int cs35l33_set_bias_level(struct snd_soc_component *component,
357 enum snd_soc_bias_level level)
358 {
359 unsigned int val;
360 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
361
362 switch (level) {
363 case SND_SOC_BIAS_ON:
364 break;
365 case SND_SOC_BIAS_PREPARE:
366 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
367 CS35L33_PDN_ALL, 0);
368 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
369 CS35L33_MCLKDIS, 0);
370 break;
371 case SND_SOC_BIAS_STANDBY:
372 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
373 CS35L33_PDN_ALL, CS35L33_PDN_ALL);
374 regmap_read(priv->regmap, CS35L33_INT_STATUS_2, &val);
375 usleep_range(1000, 1100);
376 if (val & CS35L33_PDN_DONE)
377 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
378 CS35L33_MCLKDIS, CS35L33_MCLKDIS);
379 break;
380 case SND_SOC_BIAS_OFF:
381 break;
382 default:
383 return -EINVAL;
384 }
385
386 return 0;
387 }
388
389 struct cs35l33_mclk_div {
390 int mclk;
391 int srate;
392 u8 adsp_rate;
393 u8 int_fs_ratio;
394 };
395
396 static const struct cs35l33_mclk_div cs35l33_mclk_coeffs[] = {
397 /* MCLK, Sample Rate, adsp_rate, int_fs_ratio */
398 {5644800, 11025, 0x4, CS35L33_INT_FS_RATE},
399 {5644800, 22050, 0x8, CS35L33_INT_FS_RATE},
400 {5644800, 44100, 0xC, CS35L33_INT_FS_RATE},
401
402 {6000000, 8000, 0x1, 0},
403 {6000000, 11025, 0x2, 0},
404 {6000000, 11029, 0x3, 0},
405 {6000000, 12000, 0x4, 0},
406 {6000000, 16000, 0x5, 0},
407 {6000000, 22050, 0x6, 0},
408 {6000000, 22059, 0x7, 0},
409 {6000000, 24000, 0x8, 0},
410 {6000000, 32000, 0x9, 0},
411 {6000000, 44100, 0xA, 0},
412 {6000000, 44118, 0xB, 0},
413 {6000000, 48000, 0xC, 0},
414
415 {6144000, 8000, 0x1, CS35L33_INT_FS_RATE},
416 {6144000, 12000, 0x4, CS35L33_INT_FS_RATE},
417 {6144000, 16000, 0x5, CS35L33_INT_FS_RATE},
418 {6144000, 24000, 0x8, CS35L33_INT_FS_RATE},
419 {6144000, 32000, 0x9, CS35L33_INT_FS_RATE},
420 {6144000, 48000, 0xC, CS35L33_INT_FS_RATE},
421 };
422
cs35l33_get_mclk_coeff(int mclk,int srate)423 static int cs35l33_get_mclk_coeff(int mclk, int srate)
424 {
425 int i;
426
427 for (i = 0; i < ARRAY_SIZE(cs35l33_mclk_coeffs); i++) {
428 if (cs35l33_mclk_coeffs[i].mclk == mclk &&
429 cs35l33_mclk_coeffs[i].srate == srate)
430 return i;
431 }
432 return -EINVAL;
433 }
434
cs35l33_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)435 static int cs35l33_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
436 {
437 struct snd_soc_component *component = codec_dai->component;
438 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
439
440 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
441 case SND_SOC_DAIFMT_CBP_CFP:
442 regmap_update_bits(priv->regmap, CS35L33_ADSP_CTL,
443 CS35L33_MS_MASK, CS35L33_MS_MASK);
444 dev_dbg(component->dev, "Audio port in master mode\n");
445 break;
446 case SND_SOC_DAIFMT_CBC_CFC:
447 regmap_update_bits(priv->regmap, CS35L33_ADSP_CTL,
448 CS35L33_MS_MASK, 0);
449 dev_dbg(component->dev, "Audio port in slave mode\n");
450 break;
451 default:
452 return -EINVAL;
453 }
454
455 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
456 case SND_SOC_DAIFMT_DSP_A:
457 /*
458 * tdm mode in cs35l33 resembles dsp-a mode very
459 * closely, it is dsp-a with fsync shifted left by half bclk
460 */
461 priv->is_tdm_mode = true;
462 dev_dbg(component->dev, "Audio port in TDM mode\n");
463 break;
464 case SND_SOC_DAIFMT_I2S:
465 priv->is_tdm_mode = false;
466 dev_dbg(component->dev, "Audio port in I2S mode\n");
467 break;
468 default:
469 return -EINVAL;
470 }
471
472 return 0;
473 }
474
cs35l33_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)475 static int cs35l33_pcm_hw_params(struct snd_pcm_substream *substream,
476 struct snd_pcm_hw_params *params,
477 struct snd_soc_dai *dai)
478 {
479 struct snd_soc_component *component = dai->component;
480 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
481 int sample_size = params_width(params);
482 int coeff = cs35l33_get_mclk_coeff(priv->mclk_int, params_rate(params));
483
484 if (coeff < 0)
485 return coeff;
486
487 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
488 CS35L33_ADSP_FS | CS35L33_INT_FS_RATE,
489 cs35l33_mclk_coeffs[coeff].int_fs_ratio
490 | cs35l33_mclk_coeffs[coeff].adsp_rate);
491
492 if (priv->is_tdm_mode) {
493 sample_size = (sample_size / 8) - 1;
494 if (sample_size > 2)
495 sample_size = 2;
496 regmap_update_bits(priv->regmap, CS35L33_RX_AUD,
497 CS35L33_AUDIN_RX_DEPTH,
498 sample_size << CS35L33_AUDIN_RX_DEPTH_SHIFT);
499 }
500
501 dev_dbg(component->dev, "sample rate=%d, bits per sample=%d\n",
502 params_rate(params), params_width(params));
503
504 return 0;
505 }
506
507 static const unsigned int cs35l33_src_rates[] = {
508 8000, 11025, 11029, 12000, 16000, 22050,
509 22059, 24000, 32000, 44100, 44118, 48000
510 };
511
512 static const struct snd_pcm_hw_constraint_list cs35l33_constraints = {
513 .count = ARRAY_SIZE(cs35l33_src_rates),
514 .list = cs35l33_src_rates,
515 };
516
cs35l33_pcm_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)517 static int cs35l33_pcm_startup(struct snd_pcm_substream *substream,
518 struct snd_soc_dai *dai)
519 {
520 snd_pcm_hw_constraint_list(substream->runtime, 0,
521 SNDRV_PCM_HW_PARAM_RATE,
522 &cs35l33_constraints);
523 return 0;
524 }
525
cs35l33_set_tristate(struct snd_soc_dai * dai,int tristate)526 static int cs35l33_set_tristate(struct snd_soc_dai *dai, int tristate)
527 {
528 struct snd_soc_component *component = dai->component;
529 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
530
531 if (tristate) {
532 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
533 CS35L33_SDOUT_3ST_I2S, CS35L33_SDOUT_3ST_I2S);
534 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
535 CS35L33_SDOUT_3ST_TDM, CS35L33_SDOUT_3ST_TDM);
536 } else {
537 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
538 CS35L33_SDOUT_3ST_I2S, 0);
539 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
540 CS35L33_SDOUT_3ST_TDM, 0);
541 }
542
543 return 0;
544 }
545
cs35l33_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)546 static int cs35l33_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
547 unsigned int rx_mask, int slots, int slot_width)
548 {
549 struct snd_soc_component *component = dai->component;
550 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
551 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
552 unsigned int reg, bit_pos, i;
553 int slot, slot_num;
554
555 if (slot_width != 8)
556 return -EINVAL;
557
558 /* scan rx_mask for aud slot */
559 slot = ffs(rx_mask) - 1;
560 if (slot >= 0) {
561 regmap_update_bits(priv->regmap, CS35L33_RX_AUD,
562 CS35L33_X_LOC, slot);
563 dev_dbg(component->dev, "Audio starts from slots %d", slot);
564 }
565
566 /*
567 * scan tx_mask: vmon(2 slots); imon (2 slots);
568 * vpmon (1 slot) vbstmon (1 slot)
569 */
570 slot = ffs(tx_mask) - 1;
571 slot_num = 0;
572
573 for (i = 0; i < 2 ; i++) {
574 /* disable vpmon/vbstmon: enable later if set in tx_mask */
575 regmap_update_bits(priv->regmap, CS35L33_TX_VPMON + i,
576 CS35L33_X_STATE | CS35L33_X_LOC, CS35L33_X_STATE
577 | CS35L33_X_LOC);
578 }
579
580 /* disconnect {vp,vbst}_mon routes: eanble later if set in tx_mask*/
581 snd_soc_dapm_del_routes(dapm, cs35l33_vp_vbst_mon_route,
582 ARRAY_SIZE(cs35l33_vp_vbst_mon_route));
583
584 while (slot >= 0) {
585 /* configure VMON_TX_LOC */
586 if (slot_num == 0) {
587 regmap_update_bits(priv->regmap, CS35L33_TX_VMON,
588 CS35L33_X_STATE | CS35L33_X_LOC, slot);
589 dev_dbg(component->dev, "VMON enabled in slots %d-%d",
590 slot, slot + 1);
591 }
592
593 /* configure IMON_TX_LOC */
594 if (slot_num == 3) {
595 regmap_update_bits(priv->regmap, CS35L33_TX_IMON,
596 CS35L33_X_STATE | CS35L33_X_LOC, slot);
597 dev_dbg(component->dev, "IMON enabled in slots %d-%d",
598 slot, slot + 1);
599 }
600
601 /* configure VPMON_TX_LOC */
602 if (slot_num == 4) {
603 regmap_update_bits(priv->regmap, CS35L33_TX_VPMON,
604 CS35L33_X_STATE | CS35L33_X_LOC, slot);
605 snd_soc_dapm_add_routes(dapm,
606 &cs35l33_vp_vbst_mon_route[0], 2);
607 dev_dbg(component->dev, "VPMON enabled in slots %d", slot);
608 }
609
610 /* configure VBSTMON_TX_LOC */
611 if (slot_num == 5) {
612 regmap_update_bits(priv->regmap, CS35L33_TX_VBSTMON,
613 CS35L33_X_STATE | CS35L33_X_LOC, slot);
614 snd_soc_dapm_add_routes(dapm,
615 &cs35l33_vp_vbst_mon_route[2], 2);
616 dev_dbg(component->dev,
617 "VBSTMON enabled in slots %d", slot);
618 }
619
620 /* Enable the relevant tx slot */
621 reg = CS35L33_TX_EN4 - (slot/8);
622 bit_pos = slot - ((slot / 8) * (8));
623 regmap_update_bits(priv->regmap, reg,
624 1 << bit_pos, 1 << bit_pos);
625
626 tx_mask &= ~(1 << slot);
627 slot = ffs(tx_mask) - 1;
628 slot_num++;
629 }
630
631 return 0;
632 }
633
cs35l33_component_set_sysclk(struct snd_soc_component * component,int clk_id,int source,unsigned int freq,int dir)634 static int cs35l33_component_set_sysclk(struct snd_soc_component *component,
635 int clk_id, int source, unsigned int freq, int dir)
636 {
637 struct cs35l33_private *cs35l33 = snd_soc_component_get_drvdata(component);
638
639 switch (freq) {
640 case CS35L33_MCLK_5644:
641 case CS35L33_MCLK_6:
642 case CS35L33_MCLK_6144:
643 regmap_update_bits(cs35l33->regmap, CS35L33_CLK_CTL,
644 CS35L33_MCLKDIV2, 0);
645 cs35l33->mclk_int = freq;
646 break;
647 case CS35L33_MCLK_11289:
648 case CS35L33_MCLK_12:
649 case CS35L33_MCLK_12288:
650 regmap_update_bits(cs35l33->regmap, CS35L33_CLK_CTL,
651 CS35L33_MCLKDIV2, CS35L33_MCLKDIV2);
652 cs35l33->mclk_int = freq/2;
653 break;
654 default:
655 cs35l33->mclk_int = 0;
656 return -EINVAL;
657 }
658
659 dev_dbg(component->dev, "external mclk freq=%d, internal mclk freq=%d\n",
660 freq, cs35l33->mclk_int);
661
662 return 0;
663 }
664
665 static const struct snd_soc_dai_ops cs35l33_ops = {
666 .startup = cs35l33_pcm_startup,
667 .set_tristate = cs35l33_set_tristate,
668 .set_fmt = cs35l33_set_dai_fmt,
669 .hw_params = cs35l33_pcm_hw_params,
670 .set_tdm_slot = cs35l33_set_tdm_slot,
671 };
672
673 static struct snd_soc_dai_driver cs35l33_dai = {
674 .name = "cs35l33-dai",
675 .id = 0,
676 .playback = {
677 .stream_name = "CS35L33 Playback",
678 .channels_min = 1,
679 .channels_max = 1,
680 .rates = CS35L33_RATES,
681 .formats = CS35L33_FORMATS,
682 },
683 .capture = {
684 .stream_name = "CS35L33 Capture",
685 .channels_min = 2,
686 .channels_max = 2,
687 .rates = CS35L33_RATES,
688 .formats = CS35L33_FORMATS,
689 },
690 .ops = &cs35l33_ops,
691 .symmetric_rate = 1,
692 };
693
cs35l33_set_hg_data(struct snd_soc_component * component,struct cs35l33_pdata * pdata)694 static int cs35l33_set_hg_data(struct snd_soc_component *component,
695 struct cs35l33_pdata *pdata)
696 {
697 struct cs35l33_hg *hg_config = &pdata->hg_config;
698 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
699 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
700
701 if (hg_config->enable_hg_algo) {
702 regmap_update_bits(priv->regmap, CS35L33_HG_MEMLDO_CTL,
703 CS35L33_MEM_DEPTH_MASK,
704 hg_config->mem_depth << CS35L33_MEM_DEPTH_SHIFT);
705 regmap_write(priv->regmap, CS35L33_HG_REL_RATE,
706 hg_config->release_rate);
707 regmap_update_bits(priv->regmap, CS35L33_HG_HEAD,
708 CS35L33_HD_RM_MASK,
709 hg_config->hd_rm << CS35L33_HD_RM_SHIFT);
710 regmap_update_bits(priv->regmap, CS35L33_HG_MEMLDO_CTL,
711 CS35L33_LDO_THLD_MASK,
712 hg_config->ldo_thld << CS35L33_LDO_THLD_SHIFT);
713 regmap_update_bits(priv->regmap, CS35L33_HG_MEMLDO_CTL,
714 CS35L33_LDO_DISABLE_MASK,
715 hg_config->ldo_path_disable <<
716 CS35L33_LDO_DISABLE_SHIFT);
717 regmap_update_bits(priv->regmap, CS35L33_LDO_DEL,
718 CS35L33_LDO_ENTRY_DELAY_MASK,
719 hg_config->ldo_entry_delay <<
720 CS35L33_LDO_ENTRY_DELAY_SHIFT);
721 if (hg_config->vp_hg_auto) {
722 regmap_update_bits(priv->regmap, CS35L33_HG_EN,
723 CS35L33_VP_HG_AUTO_MASK,
724 CS35L33_VP_HG_AUTO_MASK);
725 snd_soc_dapm_add_routes(dapm, cs35l33_vphg_auto_route,
726 ARRAY_SIZE(cs35l33_vphg_auto_route));
727 }
728 regmap_update_bits(priv->regmap, CS35L33_HG_EN,
729 CS35L33_VP_HG_MASK,
730 hg_config->vp_hg << CS35L33_VP_HG_SHIFT);
731 regmap_update_bits(priv->regmap, CS35L33_LDO_DEL,
732 CS35L33_VP_HG_RATE_MASK,
733 hg_config->vp_hg_rate << CS35L33_VP_HG_RATE_SHIFT);
734 regmap_update_bits(priv->regmap, CS35L33_LDO_DEL,
735 CS35L33_VP_HG_VA_MASK,
736 hg_config->vp_hg_va << CS35L33_VP_HG_VA_SHIFT);
737 regmap_update_bits(priv->regmap, CS35L33_HG_EN,
738 CS35L33_CLASS_HG_EN_MASK, CS35L33_CLASS_HG_EN_MASK);
739 }
740 return 0;
741 }
742
cs35l33_set_bst_ipk(struct snd_soc_component * component,unsigned int bst)743 static int cs35l33_set_bst_ipk(struct snd_soc_component *component, unsigned int bst)
744 {
745 struct cs35l33_private *cs35l33 = snd_soc_component_get_drvdata(component);
746 int ret = 0, steps = 0;
747
748 /* Boost current in uA */
749 if (bst > 3600000 || bst < 1850000) {
750 dev_err(component->dev, "Invalid boost current %d\n", bst);
751 ret = -EINVAL;
752 goto err;
753 }
754
755 if (bst % 15625) {
756 dev_err(component->dev, "Current not a multiple of 15625uA (%d)\n",
757 bst);
758 ret = -EINVAL;
759 goto err;
760 }
761
762 while (bst > 1850000) {
763 bst -= 15625;
764 steps++;
765 }
766
767 regmap_write(cs35l33->regmap, CS35L33_BST_PEAK_CTL,
768 steps+0x70);
769
770 err:
771 return ret;
772 }
773
cs35l33_probe(struct snd_soc_component * component)774 static int cs35l33_probe(struct snd_soc_component *component)
775 {
776 struct cs35l33_private *cs35l33 = snd_soc_component_get_drvdata(component);
777
778 cs35l33->component = component;
779 pm_runtime_get_sync(component->dev);
780
781 regmap_update_bits(cs35l33->regmap, CS35L33_PROTECT_CTL,
782 CS35L33_ALIVE_WD_DIS, 0x8);
783 regmap_update_bits(cs35l33->regmap, CS35L33_BST_CTL2,
784 CS35L33_ALIVE_WD_DIS2,
785 CS35L33_ALIVE_WD_DIS2);
786
787 /* Set Platform Data */
788 regmap_update_bits(cs35l33->regmap, CS35L33_BST_CTL1,
789 CS35L33_BST_CTL_MASK, cs35l33->pdata.boost_ctl);
790 regmap_update_bits(cs35l33->regmap, CS35L33_CLASSD_CTL,
791 CS35L33_AMP_DRV_SEL_MASK,
792 cs35l33->pdata.amp_drv_sel << CS35L33_AMP_DRV_SEL_SHIFT);
793
794 if (cs35l33->pdata.boost_ipk)
795 cs35l33_set_bst_ipk(component, cs35l33->pdata.boost_ipk);
796
797 if (cs35l33->enable_soft_ramp) {
798 snd_soc_component_update_bits(component, CS35L33_DAC_CTL,
799 CS35L33_DIGSFT, CS35L33_DIGSFT);
800 snd_soc_component_update_bits(component, CS35L33_DAC_CTL,
801 CS35L33_DSR_RATE, cs35l33->pdata.ramp_rate);
802 } else {
803 snd_soc_component_update_bits(component, CS35L33_DAC_CTL,
804 CS35L33_DIGSFT, 0);
805 }
806
807 /* update IMON scaling rate if different from default of 0x8 */
808 if (cs35l33->pdata.imon_adc_scale != 0x8)
809 snd_soc_component_update_bits(component, CS35L33_ADC_CTL,
810 CS35L33_IMON_SCALE, cs35l33->pdata.imon_adc_scale);
811
812 cs35l33_set_hg_data(component, &(cs35l33->pdata));
813
814 /*
815 * unmask important interrupts that causes the chip to enter
816 * speaker safe mode and hence deserves user attention
817 */
818 regmap_update_bits(cs35l33->regmap, CS35L33_INT_MASK_1,
819 CS35L33_M_OTE | CS35L33_M_OTW | CS35L33_M_AMP_SHORT |
820 CS35L33_M_CAL_ERR, 0);
821
822 pm_runtime_put_sync(component->dev);
823
824 return 0;
825 }
826
827 static const struct snd_soc_component_driver soc_component_dev_cs35l33 = {
828 .probe = cs35l33_probe,
829 .set_bias_level = cs35l33_set_bias_level,
830 .set_sysclk = cs35l33_component_set_sysclk,
831 .controls = cs35l33_snd_controls,
832 .num_controls = ARRAY_SIZE(cs35l33_snd_controls),
833 .dapm_widgets = cs35l33_dapm_widgets,
834 .num_dapm_widgets = ARRAY_SIZE(cs35l33_dapm_widgets),
835 .dapm_routes = cs35l33_audio_map,
836 .num_dapm_routes = ARRAY_SIZE(cs35l33_audio_map),
837 .use_pmdown_time = 1,
838 .endianness = 1,
839 };
840
841 static const struct regmap_config cs35l33_regmap = {
842 .reg_bits = 8,
843 .val_bits = 8,
844
845 .max_register = CS35L33_MAX_REGISTER,
846 .reg_defaults = cs35l33_reg,
847 .num_reg_defaults = ARRAY_SIZE(cs35l33_reg),
848 .volatile_reg = cs35l33_volatile_register,
849 .readable_reg = cs35l33_readable_register,
850 .writeable_reg = cs35l33_writeable_register,
851 .cache_type = REGCACHE_MAPLE,
852 .use_single_read = true,
853 .use_single_write = true,
854 };
855
cs35l33_runtime_resume(struct device * dev)856 static int cs35l33_runtime_resume(struct device *dev)
857 {
858 struct cs35l33_private *cs35l33 = dev_get_drvdata(dev);
859 int ret;
860
861 dev_dbg(dev, "%s\n", __func__);
862
863 gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);
864
865 ret = regulator_bulk_enable(cs35l33->num_core_supplies,
866 cs35l33->core_supplies);
867 if (ret != 0) {
868 dev_err(dev, "Failed to enable core supplies: %d\n", ret);
869 return ret;
870 }
871
872 regcache_cache_only(cs35l33->regmap, false);
873
874 gpiod_set_value_cansleep(cs35l33->reset_gpio, 1);
875
876 msleep(CS35L33_BOOT_DELAY);
877
878 ret = regcache_sync(cs35l33->regmap);
879 if (ret != 0) {
880 dev_err(dev, "Failed to restore register cache\n");
881 goto err;
882 }
883
884 return 0;
885
886 err:
887 regcache_cache_only(cs35l33->regmap, true);
888 regulator_bulk_disable(cs35l33->num_core_supplies,
889 cs35l33->core_supplies);
890
891 return ret;
892 }
893
cs35l33_runtime_suspend(struct device * dev)894 static int cs35l33_runtime_suspend(struct device *dev)
895 {
896 struct cs35l33_private *cs35l33 = dev_get_drvdata(dev);
897
898 dev_dbg(dev, "%s\n", __func__);
899
900 /* redo the calibration in next power up */
901 cs35l33->amp_cal = false;
902
903 regcache_cache_only(cs35l33->regmap, true);
904 regcache_mark_dirty(cs35l33->regmap);
905 regulator_bulk_disable(cs35l33->num_core_supplies,
906 cs35l33->core_supplies);
907
908 return 0;
909 }
910
911 static const struct dev_pm_ops cs35l33_pm_ops = {
912 RUNTIME_PM_OPS(cs35l33_runtime_suspend, cs35l33_runtime_resume, NULL)
913 };
914
cs35l33_get_hg_data(const struct device_node * np,struct cs35l33_pdata * pdata)915 static int cs35l33_get_hg_data(const struct device_node *np,
916 struct cs35l33_pdata *pdata)
917 {
918 struct device_node *hg;
919 struct cs35l33_hg *hg_config = &pdata->hg_config;
920 u32 val32;
921
922 hg = of_get_child_by_name(np, "cirrus,hg-algo");
923 hg_config->enable_hg_algo = hg ? true : false;
924
925 if (hg_config->enable_hg_algo) {
926 if (of_property_read_u32(hg, "cirrus,mem-depth", &val32) >= 0)
927 hg_config->mem_depth = val32;
928 if (of_property_read_u32(hg, "cirrus,release-rate",
929 &val32) >= 0)
930 hg_config->release_rate = val32;
931 if (of_property_read_u32(hg, "cirrus,ldo-thld", &val32) >= 0)
932 hg_config->ldo_thld = val32;
933 if (of_property_read_u32(hg, "cirrus,ldo-path-disable",
934 &val32) >= 0)
935 hg_config->ldo_path_disable = val32;
936 if (of_property_read_u32(hg, "cirrus,ldo-entry-delay",
937 &val32) >= 0)
938 hg_config->ldo_entry_delay = val32;
939
940 hg_config->vp_hg_auto = of_property_read_bool(hg,
941 "cirrus,vp-hg-auto");
942
943 if (of_property_read_u32(hg, "cirrus,vp-hg", &val32) >= 0)
944 hg_config->vp_hg = val32;
945 if (of_property_read_u32(hg, "cirrus,vp-hg-rate", &val32) >= 0)
946 hg_config->vp_hg_rate = val32;
947 if (of_property_read_u32(hg, "cirrus,vp-hg-va", &val32) >= 0)
948 hg_config->vp_hg_va = val32;
949 }
950
951 of_node_put(hg);
952
953 return 0;
954 }
955
cs35l33_irq_thread(int irq,void * data)956 static irqreturn_t cs35l33_irq_thread(int irq, void *data)
957 {
958 struct cs35l33_private *cs35l33 = data;
959 struct snd_soc_component *component = cs35l33->component;
960 unsigned int sticky_val1, sticky_val2, current_val, mask1, mask2;
961
962 regmap_read(cs35l33->regmap, CS35L33_INT_STATUS_2,
963 &sticky_val2);
964 regmap_read(cs35l33->regmap, CS35L33_INT_STATUS_1,
965 &sticky_val1);
966 regmap_read(cs35l33->regmap, CS35L33_INT_MASK_2, &mask2);
967 regmap_read(cs35l33->regmap, CS35L33_INT_MASK_1, &mask1);
968
969 /* Check to see if the unmasked bits are active,
970 * if not then exit.
971 */
972 if (!(sticky_val1 & ~mask1) && !(sticky_val2 & ~mask2))
973 return IRQ_NONE;
974
975 regmap_read(cs35l33->regmap, CS35L33_INT_STATUS_1,
976 ¤t_val);
977
978 /* handle the interrupts */
979
980 if (sticky_val1 & CS35L33_AMP_SHORT) {
981 dev_crit(component->dev, "Amp short error\n");
982 if (!(current_val & CS35L33_AMP_SHORT)) {
983 dev_dbg(component->dev,
984 "Amp short error release\n");
985 regmap_update_bits(cs35l33->regmap,
986 CS35L33_AMP_CTL,
987 CS35L33_AMP_SHORT_RLS, 0);
988 regmap_update_bits(cs35l33->regmap,
989 CS35L33_AMP_CTL,
990 CS35L33_AMP_SHORT_RLS,
991 CS35L33_AMP_SHORT_RLS);
992 regmap_update_bits(cs35l33->regmap,
993 CS35L33_AMP_CTL, CS35L33_AMP_SHORT_RLS,
994 0);
995 }
996 }
997
998 if (sticky_val1 & CS35L33_CAL_ERR) {
999 dev_err(component->dev, "Cal error\n");
1000
1001 /* redo the calibration in next power up */
1002 cs35l33->amp_cal = false;
1003
1004 if (!(current_val & CS35L33_CAL_ERR)) {
1005 dev_dbg(component->dev, "Cal error release\n");
1006 regmap_update_bits(cs35l33->regmap,
1007 CS35L33_AMP_CTL, CS35L33_CAL_ERR_RLS,
1008 0);
1009 regmap_update_bits(cs35l33->regmap,
1010 CS35L33_AMP_CTL, CS35L33_CAL_ERR_RLS,
1011 CS35L33_CAL_ERR_RLS);
1012 regmap_update_bits(cs35l33->regmap,
1013 CS35L33_AMP_CTL, CS35L33_CAL_ERR_RLS,
1014 0);
1015 }
1016 }
1017
1018 if (sticky_val1 & CS35L33_OTE) {
1019 dev_crit(component->dev, "Over temperature error\n");
1020 if (!(current_val & CS35L33_OTE)) {
1021 dev_dbg(component->dev,
1022 "Over temperature error release\n");
1023 regmap_update_bits(cs35l33->regmap,
1024 CS35L33_AMP_CTL, CS35L33_OTE_RLS, 0);
1025 regmap_update_bits(cs35l33->regmap,
1026 CS35L33_AMP_CTL, CS35L33_OTE_RLS,
1027 CS35L33_OTE_RLS);
1028 regmap_update_bits(cs35l33->regmap,
1029 CS35L33_AMP_CTL, CS35L33_OTE_RLS, 0);
1030 }
1031 }
1032
1033 if (sticky_val1 & CS35L33_OTW) {
1034 dev_err(component->dev, "Over temperature warning\n");
1035 if (!(current_val & CS35L33_OTW)) {
1036 dev_dbg(component->dev,
1037 "Over temperature warning release\n");
1038 regmap_update_bits(cs35l33->regmap,
1039 CS35L33_AMP_CTL, CS35L33_OTW_RLS, 0);
1040 regmap_update_bits(cs35l33->regmap,
1041 CS35L33_AMP_CTL, CS35L33_OTW_RLS,
1042 CS35L33_OTW_RLS);
1043 regmap_update_bits(cs35l33->regmap,
1044 CS35L33_AMP_CTL, CS35L33_OTW_RLS, 0);
1045 }
1046 }
1047 if (CS35L33_ALIVE_ERR & sticky_val1)
1048 dev_err(component->dev, "ERROR: ADSPCLK Interrupt\n");
1049
1050 if (CS35L33_MCLK_ERR & sticky_val1)
1051 dev_err(component->dev, "ERROR: MCLK Interrupt\n");
1052
1053 if (CS35L33_VMON_OVFL & sticky_val2)
1054 dev_err(component->dev,
1055 "ERROR: VMON Overflow Interrupt\n");
1056
1057 if (CS35L33_IMON_OVFL & sticky_val2)
1058 dev_err(component->dev,
1059 "ERROR: IMON Overflow Interrupt\n");
1060
1061 if (CS35L33_VPMON_OVFL & sticky_val2)
1062 dev_err(component->dev,
1063 "ERROR: VPMON Overflow Interrupt\n");
1064
1065 return IRQ_HANDLED;
1066 }
1067
1068 static const char * const cs35l33_core_supplies[] = {
1069 "VA",
1070 "VP",
1071 };
1072
cs35l33_of_get_pdata(struct device * dev,struct cs35l33_private * cs35l33)1073 static int cs35l33_of_get_pdata(struct device *dev,
1074 struct cs35l33_private *cs35l33)
1075 {
1076 struct device_node *np = dev->of_node;
1077 struct cs35l33_pdata *pdata = &cs35l33->pdata;
1078 u32 val32;
1079
1080 if (!np)
1081 return 0;
1082
1083 if (of_property_read_u32(np, "cirrus,boost-ctl", &val32) >= 0) {
1084 pdata->boost_ctl = val32;
1085 pdata->amp_drv_sel = 1;
1086 }
1087
1088 if (of_property_read_u32(np, "cirrus,ramp-rate", &val32) >= 0) {
1089 pdata->ramp_rate = val32;
1090 cs35l33->enable_soft_ramp = true;
1091 }
1092
1093 if (of_property_read_u32(np, "cirrus,boost-ipk", &val32) >= 0)
1094 pdata->boost_ipk = val32;
1095
1096 if (of_property_read_u32(np, "cirrus,imon-adc-scale", &val32) >= 0) {
1097 if ((val32 == 0x0) || (val32 == 0x7) || (val32 == 0x6))
1098 pdata->imon_adc_scale = val32;
1099 else
1100 /* use default value */
1101 pdata->imon_adc_scale = 0x8;
1102 } else {
1103 /* use default value */
1104 pdata->imon_adc_scale = 0x8;
1105 }
1106
1107 cs35l33_get_hg_data(np, pdata);
1108
1109 return 0;
1110 }
1111
cs35l33_i2c_probe(struct i2c_client * i2c_client)1112 static int cs35l33_i2c_probe(struct i2c_client *i2c_client)
1113 {
1114 struct cs35l33_private *cs35l33;
1115 struct cs35l33_pdata *pdata = dev_get_platdata(&i2c_client->dev);
1116 int ret, devid, i;
1117 unsigned int reg;
1118
1119 cs35l33 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs35l33_private),
1120 GFP_KERNEL);
1121 if (!cs35l33)
1122 return -ENOMEM;
1123
1124 i2c_set_clientdata(i2c_client, cs35l33);
1125 cs35l33->regmap = devm_regmap_init_i2c(i2c_client, &cs35l33_regmap);
1126 if (IS_ERR(cs35l33->regmap)) {
1127 ret = PTR_ERR(cs35l33->regmap);
1128 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
1129 return ret;
1130 }
1131
1132 regcache_cache_only(cs35l33->regmap, true);
1133
1134 for (i = 0; i < ARRAY_SIZE(cs35l33_core_supplies); i++)
1135 cs35l33->core_supplies[i].supply
1136 = cs35l33_core_supplies[i];
1137 cs35l33->num_core_supplies = ARRAY_SIZE(cs35l33_core_supplies);
1138
1139 ret = devm_regulator_bulk_get(&i2c_client->dev,
1140 cs35l33->num_core_supplies,
1141 cs35l33->core_supplies);
1142 if (ret != 0) {
1143 dev_err(&i2c_client->dev,
1144 "Failed to request core supplies: %d\n",
1145 ret);
1146 return ret;
1147 }
1148
1149 if (pdata) {
1150 cs35l33->pdata = *pdata;
1151 } else {
1152 cs35l33_of_get_pdata(&i2c_client->dev, cs35l33);
1153 pdata = &cs35l33->pdata;
1154 }
1155
1156 ret = devm_request_threaded_irq(&i2c_client->dev, i2c_client->irq, NULL,
1157 cs35l33_irq_thread, IRQF_ONESHOT | IRQF_TRIGGER_LOW,
1158 "cs35l33", cs35l33);
1159 if (ret != 0)
1160 dev_warn(&i2c_client->dev, "Failed to request IRQ: %d\n", ret);
1161
1162 /* We could issue !RST or skip it based on AMP topology */
1163 cs35l33->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
1164 "reset", GPIOD_OUT_HIGH);
1165 if (IS_ERR(cs35l33->reset_gpio)) {
1166 dev_err(&i2c_client->dev, "%s ERROR: Can't get reset GPIO\n",
1167 __func__);
1168 return PTR_ERR(cs35l33->reset_gpio);
1169 }
1170
1171 ret = regulator_bulk_enable(cs35l33->num_core_supplies,
1172 cs35l33->core_supplies);
1173 if (ret != 0) {
1174 dev_err(&i2c_client->dev,
1175 "Failed to enable core supplies: %d\n",
1176 ret);
1177 return ret;
1178 }
1179
1180 gpiod_set_value_cansleep(cs35l33->reset_gpio, 1);
1181
1182 msleep(CS35L33_BOOT_DELAY);
1183 regcache_cache_only(cs35l33->regmap, false);
1184
1185 /* initialize codec */
1186 devid = cirrus_read_device_id(cs35l33->regmap, CS35L33_DEVID_AB);
1187 if (devid < 0) {
1188 ret = devid;
1189 dev_err(&i2c_client->dev, "Failed to read device ID: %d\n", ret);
1190 goto err_enable;
1191 }
1192
1193 if (devid != CS35L33_CHIP_ID) {
1194 dev_err(&i2c_client->dev,
1195 "CS35L33 Device ID (%X). Expected ID %X\n",
1196 devid, CS35L33_CHIP_ID);
1197 ret = -EINVAL;
1198 goto err_enable;
1199 }
1200
1201 ret = regmap_read(cs35l33->regmap, CS35L33_REV_ID, ®);
1202 if (ret < 0) {
1203 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
1204 goto err_enable;
1205 }
1206
1207 dev_info(&i2c_client->dev,
1208 "Cirrus Logic CS35L33, Revision: %02X\n", reg & 0xFF);
1209
1210 ret = regmap_register_patch(cs35l33->regmap,
1211 cs35l33_patch, ARRAY_SIZE(cs35l33_patch));
1212 if (ret < 0) {
1213 dev_err(&i2c_client->dev,
1214 "Error in applying regmap patch: %d\n", ret);
1215 goto err_enable;
1216 }
1217
1218 /* disable mclk and tdm */
1219 regmap_update_bits(cs35l33->regmap, CS35L33_CLK_CTL,
1220 CS35L33_MCLKDIS | CS35L33_SDOUT_3ST_TDM,
1221 CS35L33_MCLKDIS | CS35L33_SDOUT_3ST_TDM);
1222
1223 pm_runtime_set_autosuspend_delay(&i2c_client->dev, 100);
1224 pm_runtime_use_autosuspend(&i2c_client->dev);
1225 pm_runtime_set_active(&i2c_client->dev);
1226 pm_runtime_enable(&i2c_client->dev);
1227
1228 ret = devm_snd_soc_register_component(&i2c_client->dev,
1229 &soc_component_dev_cs35l33, &cs35l33_dai, 1);
1230 if (ret < 0) {
1231 dev_err(&i2c_client->dev, "%s: Register component failed\n",
1232 __func__);
1233 goto err_enable;
1234 }
1235
1236 return 0;
1237
1238 err_enable:
1239 gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);
1240
1241 regulator_bulk_disable(cs35l33->num_core_supplies,
1242 cs35l33->core_supplies);
1243
1244 return ret;
1245 }
1246
cs35l33_i2c_remove(struct i2c_client * client)1247 static void cs35l33_i2c_remove(struct i2c_client *client)
1248 {
1249 struct cs35l33_private *cs35l33 = i2c_get_clientdata(client);
1250
1251 gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);
1252
1253 pm_runtime_disable(&client->dev);
1254 regulator_bulk_disable(cs35l33->num_core_supplies,
1255 cs35l33->core_supplies);
1256 }
1257
1258 static const struct of_device_id cs35l33_of_match[] = {
1259 { .compatible = "cirrus,cs35l33", },
1260 {},
1261 };
1262 MODULE_DEVICE_TABLE(of, cs35l33_of_match);
1263
1264 static const struct i2c_device_id cs35l33_id[] = {
1265 {"cs35l33"},
1266 {}
1267 };
1268
1269 MODULE_DEVICE_TABLE(i2c, cs35l33_id);
1270
1271 static struct i2c_driver cs35l33_i2c_driver = {
1272 .driver = {
1273 .name = "cs35l33",
1274 .pm = pm_ptr(&cs35l33_pm_ops),
1275 .of_match_table = cs35l33_of_match,
1276
1277 },
1278 .id_table = cs35l33_id,
1279 .probe = cs35l33_i2c_probe,
1280 .remove = cs35l33_i2c_remove,
1281
1282 };
1283 module_i2c_driver(cs35l33_i2c_driver);
1284
1285 MODULE_DESCRIPTION("ASoC CS35L33 driver");
1286 MODULE_AUTHOR("Paul Handrigan, Cirrus Logic Inc, <paul.handrigan@cirrus.com>");
1287 MODULE_LICENSE("GPL");
1288