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.h>
26 #include <linux/gpio/consumer.h>
27 #include <sound/cs35l33.h>
28 #include <linux/pm_runtime.h>
29 #include <linux/regulator/consumer.h>
30 #include <linux/regulator/machine.h>
31 #include <linux/of_gpio.h>
32 #include <linux/of.h>
33 #include <linux/of_device.h>
34 #include <linux/of_irq.h>
35
36 #include "cs35l33.h"
37 #include "cirrus_legacy.h"
38
39 #define CS35L33_BOOT_DELAY 50
40
41 struct cs35l33_private {
42 struct snd_soc_component *component;
43 struct cs35l33_pdata pdata;
44 struct regmap *regmap;
45 struct gpio_desc *reset_gpio;
46 bool amp_cal;
47 int mclk_int;
48 struct regulator_bulk_data core_supplies[2];
49 int num_core_supplies;
50 bool is_tdm_mode;
51 bool enable_soft_ramp;
52 };
53
54 static const struct reg_default cs35l33_reg[] = {
55 {CS35L33_PWRCTL1, 0x85},
56 {CS35L33_PWRCTL2, 0xFE},
57 {CS35L33_CLK_CTL, 0x0C},
58 {CS35L33_BST_PEAK_CTL, 0x90},
59 {CS35L33_PROTECT_CTL, 0x55},
60 {CS35L33_BST_CTL1, 0x00},
61 {CS35L33_BST_CTL2, 0x01},
62 {CS35L33_ADSP_CTL, 0x00},
63 {CS35L33_ADC_CTL, 0xC8},
64 {CS35L33_DAC_CTL, 0x14},
65 {CS35L33_DIG_VOL_CTL, 0x00},
66 {CS35L33_CLASSD_CTL, 0x04},
67 {CS35L33_AMP_CTL, 0x90},
68 {CS35L33_INT_MASK_1, 0xFF},
69 {CS35L33_INT_MASK_2, 0xFF},
70 {CS35L33_DIAG_LOCK, 0x00},
71 {CS35L33_DIAG_CTRL_1, 0x40},
72 {CS35L33_DIAG_CTRL_2, 0x00},
73 {CS35L33_HG_MEMLDO_CTL, 0x62},
74 {CS35L33_HG_REL_RATE, 0x03},
75 {CS35L33_LDO_DEL, 0x12},
76 {CS35L33_HG_HEAD, 0x0A},
77 {CS35L33_HG_EN, 0x05},
78 {CS35L33_TX_VMON, 0x00},
79 {CS35L33_TX_IMON, 0x03},
80 {CS35L33_TX_VPMON, 0x02},
81 {CS35L33_TX_VBSTMON, 0x05},
82 {CS35L33_TX_FLAG, 0x06},
83 {CS35L33_TX_EN1, 0x00},
84 {CS35L33_TX_EN2, 0x00},
85 {CS35L33_TX_EN3, 0x00},
86 {CS35L33_TX_EN4, 0x00},
87 {CS35L33_RX_AUD, 0x40},
88 {CS35L33_RX_SPLY, 0x03},
89 {CS35L33_RX_ALIVE, 0x04},
90 {CS35L33_BST_CTL4, 0x63},
91 };
92
93 static const struct reg_sequence cs35l33_patch[] = {
94 { 0x00, 0x99, 0 },
95 { 0x59, 0x02, 0 },
96 { 0x52, 0x30, 0 },
97 { 0x39, 0x45, 0 },
98 { 0x57, 0x30, 0 },
99 { 0x2C, 0x68, 0 },
100 { 0x00, 0x00, 0 },
101 };
102
cs35l33_volatile_register(struct device * dev,unsigned int reg)103 static bool cs35l33_volatile_register(struct device *dev, unsigned int reg)
104 {
105 switch (reg) {
106 case CS35L33_DEVID_AB:
107 case CS35L33_DEVID_CD:
108 case CS35L33_DEVID_E:
109 case CS35L33_REV_ID:
110 case CS35L33_INT_STATUS_1:
111 case CS35L33_INT_STATUS_2:
112 case CS35L33_HG_STATUS:
113 return true;
114 default:
115 return false;
116 }
117 }
118
cs35l33_writeable_register(struct device * dev,unsigned int reg)119 static bool cs35l33_writeable_register(struct device *dev, unsigned int reg)
120 {
121 switch (reg) {
122 /* these are read only registers */
123 case CS35L33_DEVID_AB:
124 case CS35L33_DEVID_CD:
125 case CS35L33_DEVID_E:
126 case CS35L33_REV_ID:
127 case CS35L33_INT_STATUS_1:
128 case CS35L33_INT_STATUS_2:
129 case CS35L33_HG_STATUS:
130 return false;
131 default:
132 return true;
133 }
134 }
135
cs35l33_readable_register(struct device * dev,unsigned int reg)136 static bool cs35l33_readable_register(struct device *dev, unsigned int reg)
137 {
138 switch (reg) {
139 case CS35L33_DEVID_AB:
140 case CS35L33_DEVID_CD:
141 case CS35L33_DEVID_E:
142 case CS35L33_REV_ID:
143 case CS35L33_PWRCTL1:
144 case CS35L33_PWRCTL2:
145 case CS35L33_CLK_CTL:
146 case CS35L33_BST_PEAK_CTL:
147 case CS35L33_PROTECT_CTL:
148 case CS35L33_BST_CTL1:
149 case CS35L33_BST_CTL2:
150 case CS35L33_ADSP_CTL:
151 case CS35L33_ADC_CTL:
152 case CS35L33_DAC_CTL:
153 case CS35L33_DIG_VOL_CTL:
154 case CS35L33_CLASSD_CTL:
155 case CS35L33_AMP_CTL:
156 case CS35L33_INT_MASK_1:
157 case CS35L33_INT_MASK_2:
158 case CS35L33_INT_STATUS_1:
159 case CS35L33_INT_STATUS_2:
160 case CS35L33_DIAG_LOCK:
161 case CS35L33_DIAG_CTRL_1:
162 case CS35L33_DIAG_CTRL_2:
163 case CS35L33_HG_MEMLDO_CTL:
164 case CS35L33_HG_REL_RATE:
165 case CS35L33_LDO_DEL:
166 case CS35L33_HG_HEAD:
167 case CS35L33_HG_EN:
168 case CS35L33_TX_VMON:
169 case CS35L33_TX_IMON:
170 case CS35L33_TX_VPMON:
171 case CS35L33_TX_VBSTMON:
172 case CS35L33_TX_FLAG:
173 case CS35L33_TX_EN1:
174 case CS35L33_TX_EN2:
175 case CS35L33_TX_EN3:
176 case CS35L33_TX_EN4:
177 case CS35L33_RX_AUD:
178 case CS35L33_RX_SPLY:
179 case CS35L33_RX_ALIVE:
180 case CS35L33_BST_CTL4:
181 return true;
182 default:
183 return false;
184 }
185 }
186
187 static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 100, 0);
188 static DECLARE_TLV_DB_SCALE(dac_tlv, -10200, 50, 0);
189
190 static const struct snd_kcontrol_new cs35l33_snd_controls[] = {
191
192 SOC_SINGLE_TLV("SPK Amp Volume", CS35L33_AMP_CTL,
193 4, 0x09, 0, classd_ctl_tlv),
194 SOC_SINGLE_SX_TLV("DAC Volume", CS35L33_DIG_VOL_CTL,
195 0, 0x34, 0xE4, dac_tlv),
196 };
197
cs35l33_spkrdrv_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)198 static int cs35l33_spkrdrv_event(struct snd_soc_dapm_widget *w,
199 struct snd_kcontrol *kcontrol, int event)
200 {
201 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
202 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
203
204 switch (event) {
205 case SND_SOC_DAPM_POST_PMU:
206 if (!priv->amp_cal) {
207 usleep_range(8000, 9000);
208 priv->amp_cal = true;
209 regmap_update_bits(priv->regmap, CS35L33_CLASSD_CTL,
210 CS35L33_AMP_CAL, 0);
211 dev_dbg(component->dev, "Amp calibration done\n");
212 }
213 dev_dbg(component->dev, "Amp turned on\n");
214 break;
215 case SND_SOC_DAPM_POST_PMD:
216 dev_dbg(component->dev, "Amp turned off\n");
217 break;
218 default:
219 dev_err(component->dev, "Invalid event = 0x%x\n", event);
220 break;
221 }
222
223 return 0;
224 }
225
cs35l33_sdin_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)226 static int cs35l33_sdin_event(struct snd_soc_dapm_widget *w,
227 struct snd_kcontrol *kcontrol, int event)
228 {
229 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
230 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
231 unsigned int val;
232
233 switch (event) {
234 case SND_SOC_DAPM_PRE_PMU:
235 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
236 CS35L33_PDN_BST, 0);
237 val = priv->is_tdm_mode ? 0 : CS35L33_PDN_TDM;
238 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
239 CS35L33_PDN_TDM, val);
240 dev_dbg(component->dev, "BST turned on\n");
241 break;
242 case SND_SOC_DAPM_POST_PMU:
243 dev_dbg(component->dev, "SDIN turned on\n");
244 if (!priv->amp_cal) {
245 regmap_update_bits(priv->regmap, CS35L33_CLASSD_CTL,
246 CS35L33_AMP_CAL, CS35L33_AMP_CAL);
247 dev_dbg(component->dev, "Amp calibration started\n");
248 usleep_range(10000, 11000);
249 }
250 break;
251 case SND_SOC_DAPM_POST_PMD:
252 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
253 CS35L33_PDN_TDM, CS35L33_PDN_TDM);
254 usleep_range(4000, 4100);
255 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
256 CS35L33_PDN_BST, CS35L33_PDN_BST);
257 dev_dbg(component->dev, "BST and SDIN turned off\n");
258 break;
259 default:
260 dev_err(component->dev, "Invalid event = 0x%x\n", event);
261
262 }
263
264 return 0;
265 }
266
cs35l33_sdout_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)267 static int cs35l33_sdout_event(struct snd_soc_dapm_widget *w,
268 struct snd_kcontrol *kcontrol, int event)
269 {
270 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
271 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
272 unsigned int mask = CS35L33_SDOUT_3ST_I2S | CS35L33_PDN_TDM;
273 unsigned int mask2 = CS35L33_SDOUT_3ST_TDM;
274 unsigned int val, val2;
275
276 switch (event) {
277 case SND_SOC_DAPM_PRE_PMU:
278 if (priv->is_tdm_mode) {
279 /* set sdout_3st_i2s and reset pdn_tdm */
280 val = CS35L33_SDOUT_3ST_I2S;
281 /* reset sdout_3st_tdm */
282 val2 = 0;
283 } else {
284 /* reset sdout_3st_i2s and set pdn_tdm */
285 val = CS35L33_PDN_TDM;
286 /* set sdout_3st_tdm */
287 val2 = CS35L33_SDOUT_3ST_TDM;
288 }
289 dev_dbg(component->dev, "SDOUT turned on\n");
290 break;
291 case SND_SOC_DAPM_PRE_PMD:
292 val = CS35L33_SDOUT_3ST_I2S | CS35L33_PDN_TDM;
293 val2 = CS35L33_SDOUT_3ST_TDM;
294 dev_dbg(component->dev, "SDOUT turned off\n");
295 break;
296 default:
297 dev_err(component->dev, "Invalid event = 0x%x\n", event);
298 return 0;
299 }
300
301 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
302 mask, val);
303 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
304 mask2, val2);
305
306 return 0;
307 }
308
309 static const struct snd_soc_dapm_widget cs35l33_dapm_widgets[] = {
310
311 SND_SOC_DAPM_OUTPUT("SPK"),
312 SND_SOC_DAPM_OUT_DRV_E("SPKDRV", CS35L33_PWRCTL1, 7, 1, NULL, 0,
313 cs35l33_spkrdrv_event,
314 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
315 SND_SOC_DAPM_AIF_IN_E("SDIN", NULL, 0, CS35L33_PWRCTL2,
316 2, 1, cs35l33_sdin_event, SND_SOC_DAPM_PRE_PMU |
317 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
318
319 SND_SOC_DAPM_INPUT("MON"),
320
321 SND_SOC_DAPM_ADC("VMON", NULL,
322 CS35L33_PWRCTL2, CS35L33_PDN_VMON_SHIFT, 1),
323 SND_SOC_DAPM_ADC("IMON", NULL,
324 CS35L33_PWRCTL2, CS35L33_PDN_IMON_SHIFT, 1),
325 SND_SOC_DAPM_ADC("VPMON", NULL,
326 CS35L33_PWRCTL2, CS35L33_PDN_VPMON_SHIFT, 1),
327 SND_SOC_DAPM_ADC("VBSTMON", NULL,
328 CS35L33_PWRCTL2, CS35L33_PDN_VBSTMON_SHIFT, 1),
329
330 SND_SOC_DAPM_AIF_OUT_E("SDOUT", NULL, 0, SND_SOC_NOPM, 0, 0,
331 cs35l33_sdout_event, SND_SOC_DAPM_PRE_PMU |
332 SND_SOC_DAPM_PRE_PMD),
333 };
334
335 static const struct snd_soc_dapm_route cs35l33_audio_map[] = {
336 {"SDIN", NULL, "CS35L33 Playback"},
337 {"SPKDRV", NULL, "SDIN"},
338 {"SPK", NULL, "SPKDRV"},
339
340 {"VMON", NULL, "MON"},
341 {"IMON", NULL, "MON"},
342
343 {"SDOUT", NULL, "VMON"},
344 {"SDOUT", NULL, "IMON"},
345 {"CS35L33 Capture", NULL, "SDOUT"},
346 };
347
348 static const struct snd_soc_dapm_route cs35l33_vphg_auto_route[] = {
349 {"SPKDRV", NULL, "VPMON"},
350 {"VPMON", NULL, "CS35L33 Playback"},
351 };
352
353 static const struct snd_soc_dapm_route cs35l33_vp_vbst_mon_route[] = {
354 {"SDOUT", NULL, "VPMON"},
355 {"VPMON", NULL, "MON"},
356 {"SDOUT", NULL, "VBSTMON"},
357 {"VBSTMON", NULL, "MON"},
358 };
359
cs35l33_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)360 static int cs35l33_set_bias_level(struct snd_soc_component *component,
361 enum snd_soc_bias_level level)
362 {
363 unsigned int val;
364 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
365
366 switch (level) {
367 case SND_SOC_BIAS_ON:
368 break;
369 case SND_SOC_BIAS_PREPARE:
370 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
371 CS35L33_PDN_ALL, 0);
372 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
373 CS35L33_MCLKDIS, 0);
374 break;
375 case SND_SOC_BIAS_STANDBY:
376 regmap_update_bits(priv->regmap, CS35L33_PWRCTL1,
377 CS35L33_PDN_ALL, CS35L33_PDN_ALL);
378 regmap_read(priv->regmap, CS35L33_INT_STATUS_2, &val);
379 usleep_range(1000, 1100);
380 if (val & CS35L33_PDN_DONE)
381 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
382 CS35L33_MCLKDIS, CS35L33_MCLKDIS);
383 break;
384 case SND_SOC_BIAS_OFF:
385 break;
386 default:
387 return -EINVAL;
388 }
389
390 return 0;
391 }
392
393 struct cs35l33_mclk_div {
394 int mclk;
395 int srate;
396 u8 adsp_rate;
397 u8 int_fs_ratio;
398 };
399
400 static const struct cs35l33_mclk_div cs35l33_mclk_coeffs[] = {
401 /* MCLK, Sample Rate, adsp_rate, int_fs_ratio */
402 {5644800, 11025, 0x4, CS35L33_INT_FS_RATE},
403 {5644800, 22050, 0x8, CS35L33_INT_FS_RATE},
404 {5644800, 44100, 0xC, CS35L33_INT_FS_RATE},
405
406 {6000000, 8000, 0x1, 0},
407 {6000000, 11025, 0x2, 0},
408 {6000000, 11029, 0x3, 0},
409 {6000000, 12000, 0x4, 0},
410 {6000000, 16000, 0x5, 0},
411 {6000000, 22050, 0x6, 0},
412 {6000000, 22059, 0x7, 0},
413 {6000000, 24000, 0x8, 0},
414 {6000000, 32000, 0x9, 0},
415 {6000000, 44100, 0xA, 0},
416 {6000000, 44118, 0xB, 0},
417 {6000000, 48000, 0xC, 0},
418
419 {6144000, 8000, 0x1, CS35L33_INT_FS_RATE},
420 {6144000, 12000, 0x4, CS35L33_INT_FS_RATE},
421 {6144000, 16000, 0x5, CS35L33_INT_FS_RATE},
422 {6144000, 24000, 0x8, CS35L33_INT_FS_RATE},
423 {6144000, 32000, 0x9, CS35L33_INT_FS_RATE},
424 {6144000, 48000, 0xC, CS35L33_INT_FS_RATE},
425 };
426
cs35l33_get_mclk_coeff(int mclk,int srate)427 static int cs35l33_get_mclk_coeff(int mclk, int srate)
428 {
429 int i;
430
431 for (i = 0; i < ARRAY_SIZE(cs35l33_mclk_coeffs); i++) {
432 if (cs35l33_mclk_coeffs[i].mclk == mclk &&
433 cs35l33_mclk_coeffs[i].srate == srate)
434 return i;
435 }
436 return -EINVAL;
437 }
438
cs35l33_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)439 static int cs35l33_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
440 {
441 struct snd_soc_component *component = codec_dai->component;
442 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
443
444 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
445 case SND_SOC_DAIFMT_CBM_CFM:
446 regmap_update_bits(priv->regmap, CS35L33_ADSP_CTL,
447 CS35L33_MS_MASK, CS35L33_MS_MASK);
448 dev_dbg(component->dev, "Audio port in master mode\n");
449 break;
450 case SND_SOC_DAIFMT_CBS_CFS:
451 regmap_update_bits(priv->regmap, CS35L33_ADSP_CTL,
452 CS35L33_MS_MASK, 0);
453 dev_dbg(component->dev, "Audio port in slave mode\n");
454 break;
455 default:
456 return -EINVAL;
457 }
458
459 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
460 case SND_SOC_DAIFMT_DSP_A:
461 /*
462 * tdm mode in cs35l33 resembles dsp-a mode very
463 * closely, it is dsp-a with fsync shifted left by half bclk
464 */
465 priv->is_tdm_mode = true;
466 dev_dbg(component->dev, "Audio port in TDM mode\n");
467 break;
468 case SND_SOC_DAIFMT_I2S:
469 priv->is_tdm_mode = false;
470 dev_dbg(component->dev, "Audio port in I2S mode\n");
471 break;
472 default:
473 return -EINVAL;
474 }
475
476 return 0;
477 }
478
cs35l33_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)479 static int cs35l33_pcm_hw_params(struct snd_pcm_substream *substream,
480 struct snd_pcm_hw_params *params,
481 struct snd_soc_dai *dai)
482 {
483 struct snd_soc_component *component = dai->component;
484 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
485 int sample_size = params_width(params);
486 int coeff = cs35l33_get_mclk_coeff(priv->mclk_int, params_rate(params));
487
488 if (coeff < 0)
489 return coeff;
490
491 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
492 CS35L33_ADSP_FS | CS35L33_INT_FS_RATE,
493 cs35l33_mclk_coeffs[coeff].int_fs_ratio
494 | cs35l33_mclk_coeffs[coeff].adsp_rate);
495
496 if (priv->is_tdm_mode) {
497 sample_size = (sample_size / 8) - 1;
498 if (sample_size > 2)
499 sample_size = 2;
500 regmap_update_bits(priv->regmap, CS35L33_RX_AUD,
501 CS35L33_AUDIN_RX_DEPTH,
502 sample_size << CS35L33_AUDIN_RX_DEPTH_SHIFT);
503 }
504
505 dev_dbg(component->dev, "sample rate=%d, bits per sample=%d\n",
506 params_rate(params), params_width(params));
507
508 return 0;
509 }
510
511 static const unsigned int cs35l33_src_rates[] = {
512 8000, 11025, 11029, 12000, 16000, 22050,
513 22059, 24000, 32000, 44100, 44118, 48000
514 };
515
516 static const struct snd_pcm_hw_constraint_list cs35l33_constraints = {
517 .count = ARRAY_SIZE(cs35l33_src_rates),
518 .list = cs35l33_src_rates,
519 };
520
cs35l33_pcm_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)521 static int cs35l33_pcm_startup(struct snd_pcm_substream *substream,
522 struct snd_soc_dai *dai)
523 {
524 snd_pcm_hw_constraint_list(substream->runtime, 0,
525 SNDRV_PCM_HW_PARAM_RATE,
526 &cs35l33_constraints);
527 return 0;
528 }
529
cs35l33_set_tristate(struct snd_soc_dai * dai,int tristate)530 static int cs35l33_set_tristate(struct snd_soc_dai *dai, int tristate)
531 {
532 struct snd_soc_component *component = dai->component;
533 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
534
535 if (tristate) {
536 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
537 CS35L33_SDOUT_3ST_I2S, CS35L33_SDOUT_3ST_I2S);
538 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
539 CS35L33_SDOUT_3ST_TDM, CS35L33_SDOUT_3ST_TDM);
540 } else {
541 regmap_update_bits(priv->regmap, CS35L33_PWRCTL2,
542 CS35L33_SDOUT_3ST_I2S, 0);
543 regmap_update_bits(priv->regmap, CS35L33_CLK_CTL,
544 CS35L33_SDOUT_3ST_TDM, 0);
545 }
546
547 return 0;
548 }
549
cs35l33_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)550 static int cs35l33_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
551 unsigned int rx_mask, int slots, int slot_width)
552 {
553 struct snd_soc_component *component = dai->component;
554 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
555 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
556 unsigned int reg, bit_pos, i;
557 int slot, slot_num;
558
559 if (slot_width != 8)
560 return -EINVAL;
561
562 /* scan rx_mask for aud slot */
563 slot = ffs(rx_mask) - 1;
564 if (slot >= 0) {
565 regmap_update_bits(priv->regmap, CS35L33_RX_AUD,
566 CS35L33_X_LOC, slot);
567 dev_dbg(component->dev, "Audio starts from slots %d", slot);
568 }
569
570 /*
571 * scan tx_mask: vmon(2 slots); imon (2 slots);
572 * vpmon (1 slot) vbstmon (1 slot)
573 */
574 slot = ffs(tx_mask) - 1;
575 slot_num = 0;
576
577 for (i = 0; i < 2 ; i++) {
578 /* disable vpmon/vbstmon: enable later if set in tx_mask */
579 regmap_update_bits(priv->regmap, CS35L33_TX_VPMON + i,
580 CS35L33_X_STATE | CS35L33_X_LOC, CS35L33_X_STATE
581 | CS35L33_X_LOC);
582 }
583
584 /* disconnect {vp,vbst}_mon routes: eanble later if set in tx_mask*/
585 snd_soc_dapm_del_routes(dapm, cs35l33_vp_vbst_mon_route,
586 ARRAY_SIZE(cs35l33_vp_vbst_mon_route));
587
588 while (slot >= 0) {
589 /* configure VMON_TX_LOC */
590 if (slot_num == 0) {
591 regmap_update_bits(priv->regmap, CS35L33_TX_VMON,
592 CS35L33_X_STATE | CS35L33_X_LOC, slot);
593 dev_dbg(component->dev, "VMON enabled in slots %d-%d",
594 slot, slot + 1);
595 }
596
597 /* configure IMON_TX_LOC */
598 if (slot_num == 3) {
599 regmap_update_bits(priv->regmap, CS35L33_TX_IMON,
600 CS35L33_X_STATE | CS35L33_X_LOC, slot);
601 dev_dbg(component->dev, "IMON enabled in slots %d-%d",
602 slot, slot + 1);
603 }
604
605 /* configure VPMON_TX_LOC */
606 if (slot_num == 4) {
607 regmap_update_bits(priv->regmap, CS35L33_TX_VPMON,
608 CS35L33_X_STATE | CS35L33_X_LOC, slot);
609 snd_soc_dapm_add_routes(dapm,
610 &cs35l33_vp_vbst_mon_route[0], 2);
611 dev_dbg(component->dev, "VPMON enabled in slots %d", slot);
612 }
613
614 /* configure VBSTMON_TX_LOC */
615 if (slot_num == 5) {
616 regmap_update_bits(priv->regmap, CS35L33_TX_VBSTMON,
617 CS35L33_X_STATE | CS35L33_X_LOC, slot);
618 snd_soc_dapm_add_routes(dapm,
619 &cs35l33_vp_vbst_mon_route[2], 2);
620 dev_dbg(component->dev,
621 "VBSTMON enabled in slots %d", slot);
622 }
623
624 /* Enable the relevant tx slot */
625 reg = CS35L33_TX_EN4 - (slot/8);
626 bit_pos = slot - ((slot / 8) * (8));
627 regmap_update_bits(priv->regmap, reg,
628 1 << bit_pos, 1 << bit_pos);
629
630 tx_mask &= ~(1 << slot);
631 slot = ffs(tx_mask) - 1;
632 slot_num++;
633 }
634
635 return 0;
636 }
637
cs35l33_component_set_sysclk(struct snd_soc_component * component,int clk_id,int source,unsigned int freq,int dir)638 static int cs35l33_component_set_sysclk(struct snd_soc_component *component,
639 int clk_id, int source, unsigned int freq, int dir)
640 {
641 struct cs35l33_private *cs35l33 = snd_soc_component_get_drvdata(component);
642
643 switch (freq) {
644 case CS35L33_MCLK_5644:
645 case CS35L33_MCLK_6:
646 case CS35L33_MCLK_6144:
647 regmap_update_bits(cs35l33->regmap, CS35L33_CLK_CTL,
648 CS35L33_MCLKDIV2, 0);
649 cs35l33->mclk_int = freq;
650 break;
651 case CS35L33_MCLK_11289:
652 case CS35L33_MCLK_12:
653 case CS35L33_MCLK_12288:
654 regmap_update_bits(cs35l33->regmap, CS35L33_CLK_CTL,
655 CS35L33_MCLKDIV2, CS35L33_MCLKDIV2);
656 cs35l33->mclk_int = freq/2;
657 break;
658 default:
659 cs35l33->mclk_int = 0;
660 return -EINVAL;
661 }
662
663 dev_dbg(component->dev, "external mclk freq=%d, internal mclk freq=%d\n",
664 freq, cs35l33->mclk_int);
665
666 return 0;
667 }
668
669 static const struct snd_soc_dai_ops cs35l33_ops = {
670 .startup = cs35l33_pcm_startup,
671 .set_tristate = cs35l33_set_tristate,
672 .set_fmt = cs35l33_set_dai_fmt,
673 .hw_params = cs35l33_pcm_hw_params,
674 .set_tdm_slot = cs35l33_set_tdm_slot,
675 };
676
677 static struct snd_soc_dai_driver cs35l33_dai = {
678 .name = "cs35l33-dai",
679 .id = 0,
680 .playback = {
681 .stream_name = "CS35L33 Playback",
682 .channels_min = 1,
683 .channels_max = 1,
684 .rates = CS35L33_RATES,
685 .formats = CS35L33_FORMATS,
686 },
687 .capture = {
688 .stream_name = "CS35L33 Capture",
689 .channels_min = 2,
690 .channels_max = 2,
691 .rates = CS35L33_RATES,
692 .formats = CS35L33_FORMATS,
693 },
694 .ops = &cs35l33_ops,
695 .symmetric_rate = 1,
696 };
697
cs35l33_set_hg_data(struct snd_soc_component * component,struct cs35l33_pdata * pdata)698 static int cs35l33_set_hg_data(struct snd_soc_component *component,
699 struct cs35l33_pdata *pdata)
700 {
701 struct cs35l33_hg *hg_config = &pdata->hg_config;
702 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
703 struct cs35l33_private *priv = snd_soc_component_get_drvdata(component);
704
705 if (hg_config->enable_hg_algo) {
706 regmap_update_bits(priv->regmap, CS35L33_HG_MEMLDO_CTL,
707 CS35L33_MEM_DEPTH_MASK,
708 hg_config->mem_depth << CS35L33_MEM_DEPTH_SHIFT);
709 regmap_write(priv->regmap, CS35L33_HG_REL_RATE,
710 hg_config->release_rate);
711 regmap_update_bits(priv->regmap, CS35L33_HG_HEAD,
712 CS35L33_HD_RM_MASK,
713 hg_config->hd_rm << CS35L33_HD_RM_SHIFT);
714 regmap_update_bits(priv->regmap, CS35L33_HG_MEMLDO_CTL,
715 CS35L33_LDO_THLD_MASK,
716 hg_config->ldo_thld << CS35L33_LDO_THLD_SHIFT);
717 regmap_update_bits(priv->regmap, CS35L33_HG_MEMLDO_CTL,
718 CS35L33_LDO_DISABLE_MASK,
719 hg_config->ldo_path_disable <<
720 CS35L33_LDO_DISABLE_SHIFT);
721 regmap_update_bits(priv->regmap, CS35L33_LDO_DEL,
722 CS35L33_LDO_ENTRY_DELAY_MASK,
723 hg_config->ldo_entry_delay <<
724 CS35L33_LDO_ENTRY_DELAY_SHIFT);
725 if (hg_config->vp_hg_auto) {
726 regmap_update_bits(priv->regmap, CS35L33_HG_EN,
727 CS35L33_VP_HG_AUTO_MASK,
728 CS35L33_VP_HG_AUTO_MASK);
729 snd_soc_dapm_add_routes(dapm, cs35l33_vphg_auto_route,
730 ARRAY_SIZE(cs35l33_vphg_auto_route));
731 }
732 regmap_update_bits(priv->regmap, CS35L33_HG_EN,
733 CS35L33_VP_HG_MASK,
734 hg_config->vp_hg << CS35L33_VP_HG_SHIFT);
735 regmap_update_bits(priv->regmap, CS35L33_LDO_DEL,
736 CS35L33_VP_HG_RATE_MASK,
737 hg_config->vp_hg_rate << CS35L33_VP_HG_RATE_SHIFT);
738 regmap_update_bits(priv->regmap, CS35L33_LDO_DEL,
739 CS35L33_VP_HG_VA_MASK,
740 hg_config->vp_hg_va << CS35L33_VP_HG_VA_SHIFT);
741 regmap_update_bits(priv->regmap, CS35L33_HG_EN,
742 CS35L33_CLASS_HG_EN_MASK, CS35L33_CLASS_HG_EN_MASK);
743 }
744 return 0;
745 }
746
cs35l33_set_bst_ipk(struct snd_soc_component * component,unsigned int bst)747 static int cs35l33_set_bst_ipk(struct snd_soc_component *component, unsigned int bst)
748 {
749 struct cs35l33_private *cs35l33 = snd_soc_component_get_drvdata(component);
750 int ret = 0, steps = 0;
751
752 /* Boost current in uA */
753 if (bst > 3600000 || bst < 1850000) {
754 dev_err(component->dev, "Invalid boost current %d\n", bst);
755 ret = -EINVAL;
756 goto err;
757 }
758
759 if (bst % 15625) {
760 dev_err(component->dev, "Current not a multiple of 15625uA (%d)\n",
761 bst);
762 ret = -EINVAL;
763 goto err;
764 }
765
766 while (bst > 1850000) {
767 bst -= 15625;
768 steps++;
769 }
770
771 regmap_write(cs35l33->regmap, CS35L33_BST_PEAK_CTL,
772 steps+0x70);
773
774 err:
775 return ret;
776 }
777
cs35l33_probe(struct snd_soc_component * component)778 static int cs35l33_probe(struct snd_soc_component *component)
779 {
780 struct cs35l33_private *cs35l33 = snd_soc_component_get_drvdata(component);
781
782 cs35l33->component = component;
783 pm_runtime_get_sync(component->dev);
784
785 regmap_update_bits(cs35l33->regmap, CS35L33_PROTECT_CTL,
786 CS35L33_ALIVE_WD_DIS, 0x8);
787 regmap_update_bits(cs35l33->regmap, CS35L33_BST_CTL2,
788 CS35L33_ALIVE_WD_DIS2,
789 CS35L33_ALIVE_WD_DIS2);
790
791 /* Set Platform Data */
792 regmap_update_bits(cs35l33->regmap, CS35L33_BST_CTL1,
793 CS35L33_BST_CTL_MASK, cs35l33->pdata.boost_ctl);
794 regmap_update_bits(cs35l33->regmap, CS35L33_CLASSD_CTL,
795 CS35L33_AMP_DRV_SEL_MASK,
796 cs35l33->pdata.amp_drv_sel << CS35L33_AMP_DRV_SEL_SHIFT);
797
798 if (cs35l33->pdata.boost_ipk)
799 cs35l33_set_bst_ipk(component, cs35l33->pdata.boost_ipk);
800
801 if (cs35l33->enable_soft_ramp) {
802 snd_soc_component_update_bits(component, CS35L33_DAC_CTL,
803 CS35L33_DIGSFT, CS35L33_DIGSFT);
804 snd_soc_component_update_bits(component, CS35L33_DAC_CTL,
805 CS35L33_DSR_RATE, cs35l33->pdata.ramp_rate);
806 } else {
807 snd_soc_component_update_bits(component, CS35L33_DAC_CTL,
808 CS35L33_DIGSFT, 0);
809 }
810
811 /* update IMON scaling rate if different from default of 0x8 */
812 if (cs35l33->pdata.imon_adc_scale != 0x8)
813 snd_soc_component_update_bits(component, CS35L33_ADC_CTL,
814 CS35L33_IMON_SCALE, cs35l33->pdata.imon_adc_scale);
815
816 cs35l33_set_hg_data(component, &(cs35l33->pdata));
817
818 /*
819 * unmask important interrupts that causes the chip to enter
820 * speaker safe mode and hence deserves user attention
821 */
822 regmap_update_bits(cs35l33->regmap, CS35L33_INT_MASK_1,
823 CS35L33_M_OTE | CS35L33_M_OTW | CS35L33_M_AMP_SHORT |
824 CS35L33_M_CAL_ERR, 0);
825
826 pm_runtime_put_sync(component->dev);
827
828 return 0;
829 }
830
831 static const struct snd_soc_component_driver soc_component_dev_cs35l33 = {
832 .probe = cs35l33_probe,
833 .set_bias_level = cs35l33_set_bias_level,
834 .set_sysclk = cs35l33_component_set_sysclk,
835 .controls = cs35l33_snd_controls,
836 .num_controls = ARRAY_SIZE(cs35l33_snd_controls),
837 .dapm_widgets = cs35l33_dapm_widgets,
838 .num_dapm_widgets = ARRAY_SIZE(cs35l33_dapm_widgets),
839 .dapm_routes = cs35l33_audio_map,
840 .num_dapm_routes = ARRAY_SIZE(cs35l33_audio_map),
841 .use_pmdown_time = 1,
842 .endianness = 1,
843 };
844
845 static const struct regmap_config cs35l33_regmap = {
846 .reg_bits = 8,
847 .val_bits = 8,
848
849 .max_register = CS35L33_MAX_REGISTER,
850 .reg_defaults = cs35l33_reg,
851 .num_reg_defaults = ARRAY_SIZE(cs35l33_reg),
852 .volatile_reg = cs35l33_volatile_register,
853 .readable_reg = cs35l33_readable_register,
854 .writeable_reg = cs35l33_writeable_register,
855 .cache_type = REGCACHE_RBTREE,
856 .use_single_read = true,
857 .use_single_write = true,
858 };
859
cs35l33_runtime_resume(struct device * dev)860 static int __maybe_unused cs35l33_runtime_resume(struct device *dev)
861 {
862 struct cs35l33_private *cs35l33 = dev_get_drvdata(dev);
863 int ret;
864
865 dev_dbg(dev, "%s\n", __func__);
866
867 gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);
868
869 ret = regulator_bulk_enable(cs35l33->num_core_supplies,
870 cs35l33->core_supplies);
871 if (ret != 0) {
872 dev_err(dev, "Failed to enable core supplies: %d\n", ret);
873 return ret;
874 }
875
876 regcache_cache_only(cs35l33->regmap, false);
877
878 gpiod_set_value_cansleep(cs35l33->reset_gpio, 1);
879
880 msleep(CS35L33_BOOT_DELAY);
881
882 ret = regcache_sync(cs35l33->regmap);
883 if (ret != 0) {
884 dev_err(dev, "Failed to restore register cache\n");
885 goto err;
886 }
887
888 return 0;
889
890 err:
891 regcache_cache_only(cs35l33->regmap, true);
892 regulator_bulk_disable(cs35l33->num_core_supplies,
893 cs35l33->core_supplies);
894
895 return ret;
896 }
897
cs35l33_runtime_suspend(struct device * dev)898 static int __maybe_unused cs35l33_runtime_suspend(struct device *dev)
899 {
900 struct cs35l33_private *cs35l33 = dev_get_drvdata(dev);
901
902 dev_dbg(dev, "%s\n", __func__);
903
904 /* redo the calibration in next power up */
905 cs35l33->amp_cal = false;
906
907 regcache_cache_only(cs35l33->regmap, true);
908 regcache_mark_dirty(cs35l33->regmap);
909 regulator_bulk_disable(cs35l33->num_core_supplies,
910 cs35l33->core_supplies);
911
912 return 0;
913 }
914
915 static const struct dev_pm_ops cs35l33_pm_ops = {
916 SET_RUNTIME_PM_OPS(cs35l33_runtime_suspend,
917 cs35l33_runtime_resume,
918 NULL)
919 };
920
cs35l33_get_hg_data(const struct device_node * np,struct cs35l33_pdata * pdata)921 static int cs35l33_get_hg_data(const struct device_node *np,
922 struct cs35l33_pdata *pdata)
923 {
924 struct device_node *hg;
925 struct cs35l33_hg *hg_config = &pdata->hg_config;
926 u32 val32;
927
928 hg = of_get_child_by_name(np, "cirrus,hg-algo");
929 hg_config->enable_hg_algo = hg ? true : false;
930
931 if (hg_config->enable_hg_algo) {
932 if (of_property_read_u32(hg, "cirrus,mem-depth", &val32) >= 0)
933 hg_config->mem_depth = val32;
934 if (of_property_read_u32(hg, "cirrus,release-rate",
935 &val32) >= 0)
936 hg_config->release_rate = val32;
937 if (of_property_read_u32(hg, "cirrus,ldo-thld", &val32) >= 0)
938 hg_config->ldo_thld = val32;
939 if (of_property_read_u32(hg, "cirrus,ldo-path-disable",
940 &val32) >= 0)
941 hg_config->ldo_path_disable = val32;
942 if (of_property_read_u32(hg, "cirrus,ldo-entry-delay",
943 &val32) >= 0)
944 hg_config->ldo_entry_delay = val32;
945
946 hg_config->vp_hg_auto = of_property_read_bool(hg,
947 "cirrus,vp-hg-auto");
948
949 if (of_property_read_u32(hg, "cirrus,vp-hg", &val32) >= 0)
950 hg_config->vp_hg = val32;
951 if (of_property_read_u32(hg, "cirrus,vp-hg-rate", &val32) >= 0)
952 hg_config->vp_hg_rate = val32;
953 if (of_property_read_u32(hg, "cirrus,vp-hg-va", &val32) >= 0)
954 hg_config->vp_hg_va = val32;
955 }
956
957 of_node_put(hg);
958
959 return 0;
960 }
961
cs35l33_irq_thread(int irq,void * data)962 static irqreturn_t cs35l33_irq_thread(int irq, void *data)
963 {
964 struct cs35l33_private *cs35l33 = data;
965 struct snd_soc_component *component = cs35l33->component;
966 unsigned int sticky_val1, sticky_val2, current_val, mask1, mask2;
967
968 regmap_read(cs35l33->regmap, CS35L33_INT_STATUS_2,
969 &sticky_val2);
970 regmap_read(cs35l33->regmap, CS35L33_INT_STATUS_1,
971 &sticky_val1);
972 regmap_read(cs35l33->regmap, CS35L33_INT_MASK_2, &mask2);
973 regmap_read(cs35l33->regmap, CS35L33_INT_MASK_1, &mask1);
974
975 /* Check to see if the unmasked bits are active,
976 * if not then exit.
977 */
978 if (!(sticky_val1 & ~mask1) && !(sticky_val2 & ~mask2))
979 return IRQ_NONE;
980
981 regmap_read(cs35l33->regmap, CS35L33_INT_STATUS_1,
982 ¤t_val);
983
984 /* handle the interrupts */
985
986 if (sticky_val1 & CS35L33_AMP_SHORT) {
987 dev_crit(component->dev, "Amp short error\n");
988 if (!(current_val & CS35L33_AMP_SHORT)) {
989 dev_dbg(component->dev,
990 "Amp short error release\n");
991 regmap_update_bits(cs35l33->regmap,
992 CS35L33_AMP_CTL,
993 CS35L33_AMP_SHORT_RLS, 0);
994 regmap_update_bits(cs35l33->regmap,
995 CS35L33_AMP_CTL,
996 CS35L33_AMP_SHORT_RLS,
997 CS35L33_AMP_SHORT_RLS);
998 regmap_update_bits(cs35l33->regmap,
999 CS35L33_AMP_CTL, CS35L33_AMP_SHORT_RLS,
1000 0);
1001 }
1002 }
1003
1004 if (sticky_val1 & CS35L33_CAL_ERR) {
1005 dev_err(component->dev, "Cal error\n");
1006
1007 /* redo the calibration in next power up */
1008 cs35l33->amp_cal = false;
1009
1010 if (!(current_val & CS35L33_CAL_ERR)) {
1011 dev_dbg(component->dev, "Cal error release\n");
1012 regmap_update_bits(cs35l33->regmap,
1013 CS35L33_AMP_CTL, CS35L33_CAL_ERR_RLS,
1014 0);
1015 regmap_update_bits(cs35l33->regmap,
1016 CS35L33_AMP_CTL, CS35L33_CAL_ERR_RLS,
1017 CS35L33_CAL_ERR_RLS);
1018 regmap_update_bits(cs35l33->regmap,
1019 CS35L33_AMP_CTL, CS35L33_CAL_ERR_RLS,
1020 0);
1021 }
1022 }
1023
1024 if (sticky_val1 & CS35L33_OTE) {
1025 dev_crit(component->dev, "Over temperature error\n");
1026 if (!(current_val & CS35L33_OTE)) {
1027 dev_dbg(component->dev,
1028 "Over temperature error release\n");
1029 regmap_update_bits(cs35l33->regmap,
1030 CS35L33_AMP_CTL, CS35L33_OTE_RLS, 0);
1031 regmap_update_bits(cs35l33->regmap,
1032 CS35L33_AMP_CTL, CS35L33_OTE_RLS,
1033 CS35L33_OTE_RLS);
1034 regmap_update_bits(cs35l33->regmap,
1035 CS35L33_AMP_CTL, CS35L33_OTE_RLS, 0);
1036 }
1037 }
1038
1039 if (sticky_val1 & CS35L33_OTW) {
1040 dev_err(component->dev, "Over temperature warning\n");
1041 if (!(current_val & CS35L33_OTW)) {
1042 dev_dbg(component->dev,
1043 "Over temperature warning release\n");
1044 regmap_update_bits(cs35l33->regmap,
1045 CS35L33_AMP_CTL, CS35L33_OTW_RLS, 0);
1046 regmap_update_bits(cs35l33->regmap,
1047 CS35L33_AMP_CTL, CS35L33_OTW_RLS,
1048 CS35L33_OTW_RLS);
1049 regmap_update_bits(cs35l33->regmap,
1050 CS35L33_AMP_CTL, CS35L33_OTW_RLS, 0);
1051 }
1052 }
1053 if (CS35L33_ALIVE_ERR & sticky_val1)
1054 dev_err(component->dev, "ERROR: ADSPCLK Interrupt\n");
1055
1056 if (CS35L33_MCLK_ERR & sticky_val1)
1057 dev_err(component->dev, "ERROR: MCLK Interrupt\n");
1058
1059 if (CS35L33_VMON_OVFL & sticky_val2)
1060 dev_err(component->dev,
1061 "ERROR: VMON Overflow Interrupt\n");
1062
1063 if (CS35L33_IMON_OVFL & sticky_val2)
1064 dev_err(component->dev,
1065 "ERROR: IMON Overflow Interrupt\n");
1066
1067 if (CS35L33_VPMON_OVFL & sticky_val2)
1068 dev_err(component->dev,
1069 "ERROR: VPMON Overflow Interrupt\n");
1070
1071 return IRQ_HANDLED;
1072 }
1073
1074 static const char * const cs35l33_core_supplies[] = {
1075 "VA",
1076 "VP",
1077 };
1078
cs35l33_of_get_pdata(struct device * dev,struct cs35l33_private * cs35l33)1079 static int cs35l33_of_get_pdata(struct device *dev,
1080 struct cs35l33_private *cs35l33)
1081 {
1082 struct device_node *np = dev->of_node;
1083 struct cs35l33_pdata *pdata = &cs35l33->pdata;
1084 u32 val32;
1085
1086 if (!np)
1087 return 0;
1088
1089 if (of_property_read_u32(np, "cirrus,boost-ctl", &val32) >= 0) {
1090 pdata->boost_ctl = val32;
1091 pdata->amp_drv_sel = 1;
1092 }
1093
1094 if (of_property_read_u32(np, "cirrus,ramp-rate", &val32) >= 0) {
1095 pdata->ramp_rate = val32;
1096 cs35l33->enable_soft_ramp = true;
1097 }
1098
1099 if (of_property_read_u32(np, "cirrus,boost-ipk", &val32) >= 0)
1100 pdata->boost_ipk = val32;
1101
1102 if (of_property_read_u32(np, "cirrus,imon-adc-scale", &val32) >= 0) {
1103 if ((val32 == 0x0) || (val32 == 0x7) || (val32 == 0x6))
1104 pdata->imon_adc_scale = val32;
1105 else
1106 /* use default value */
1107 pdata->imon_adc_scale = 0x8;
1108 } else {
1109 /* use default value */
1110 pdata->imon_adc_scale = 0x8;
1111 }
1112
1113 cs35l33_get_hg_data(np, pdata);
1114
1115 return 0;
1116 }
1117
cs35l33_i2c_probe(struct i2c_client * i2c_client)1118 static int cs35l33_i2c_probe(struct i2c_client *i2c_client)
1119 {
1120 struct cs35l33_private *cs35l33;
1121 struct cs35l33_pdata *pdata = dev_get_platdata(&i2c_client->dev);
1122 int ret, devid, i;
1123 unsigned int reg;
1124
1125 cs35l33 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs35l33_private),
1126 GFP_KERNEL);
1127 if (!cs35l33)
1128 return -ENOMEM;
1129
1130 i2c_set_clientdata(i2c_client, cs35l33);
1131 cs35l33->regmap = devm_regmap_init_i2c(i2c_client, &cs35l33_regmap);
1132 if (IS_ERR(cs35l33->regmap)) {
1133 ret = PTR_ERR(cs35l33->regmap);
1134 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
1135 return ret;
1136 }
1137
1138 regcache_cache_only(cs35l33->regmap, true);
1139
1140 for (i = 0; i < ARRAY_SIZE(cs35l33_core_supplies); i++)
1141 cs35l33->core_supplies[i].supply
1142 = cs35l33_core_supplies[i];
1143 cs35l33->num_core_supplies = ARRAY_SIZE(cs35l33_core_supplies);
1144
1145 ret = devm_regulator_bulk_get(&i2c_client->dev,
1146 cs35l33->num_core_supplies,
1147 cs35l33->core_supplies);
1148 if (ret != 0) {
1149 dev_err(&i2c_client->dev,
1150 "Failed to request core supplies: %d\n",
1151 ret);
1152 return ret;
1153 }
1154
1155 if (pdata) {
1156 cs35l33->pdata = *pdata;
1157 } else {
1158 cs35l33_of_get_pdata(&i2c_client->dev, cs35l33);
1159 pdata = &cs35l33->pdata;
1160 }
1161
1162 ret = devm_request_threaded_irq(&i2c_client->dev, i2c_client->irq, NULL,
1163 cs35l33_irq_thread, IRQF_ONESHOT | IRQF_TRIGGER_LOW,
1164 "cs35l33", cs35l33);
1165 if (ret != 0)
1166 dev_warn(&i2c_client->dev, "Failed to request IRQ: %d\n", ret);
1167
1168 /* We could issue !RST or skip it based on AMP topology */
1169 cs35l33->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
1170 "reset-gpios", GPIOD_OUT_HIGH);
1171 if (IS_ERR(cs35l33->reset_gpio)) {
1172 dev_err(&i2c_client->dev, "%s ERROR: Can't get reset GPIO\n",
1173 __func__);
1174 return PTR_ERR(cs35l33->reset_gpio);
1175 }
1176
1177 ret = regulator_bulk_enable(cs35l33->num_core_supplies,
1178 cs35l33->core_supplies);
1179 if (ret != 0) {
1180 dev_err(&i2c_client->dev,
1181 "Failed to enable core supplies: %d\n",
1182 ret);
1183 return ret;
1184 }
1185
1186 gpiod_set_value_cansleep(cs35l33->reset_gpio, 1);
1187
1188 msleep(CS35L33_BOOT_DELAY);
1189 regcache_cache_only(cs35l33->regmap, false);
1190
1191 /* initialize codec */
1192 devid = cirrus_read_device_id(cs35l33->regmap, CS35L33_DEVID_AB);
1193 if (devid < 0) {
1194 ret = devid;
1195 dev_err(&i2c_client->dev, "Failed to read device ID: %d\n", ret);
1196 goto err_enable;
1197 }
1198
1199 if (devid != CS35L33_CHIP_ID) {
1200 dev_err(&i2c_client->dev,
1201 "CS35L33 Device ID (%X). Expected ID %X\n",
1202 devid, CS35L33_CHIP_ID);
1203 ret = -EINVAL;
1204 goto err_enable;
1205 }
1206
1207 ret = regmap_read(cs35l33->regmap, CS35L33_REV_ID, ®);
1208 if (ret < 0) {
1209 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
1210 goto err_enable;
1211 }
1212
1213 dev_info(&i2c_client->dev,
1214 "Cirrus Logic CS35L33, Revision: %02X\n", reg & 0xFF);
1215
1216 ret = regmap_register_patch(cs35l33->regmap,
1217 cs35l33_patch, ARRAY_SIZE(cs35l33_patch));
1218 if (ret < 0) {
1219 dev_err(&i2c_client->dev,
1220 "Error in applying regmap patch: %d\n", ret);
1221 goto err_enable;
1222 }
1223
1224 /* disable mclk and tdm */
1225 regmap_update_bits(cs35l33->regmap, CS35L33_CLK_CTL,
1226 CS35L33_MCLKDIS | CS35L33_SDOUT_3ST_TDM,
1227 CS35L33_MCLKDIS | CS35L33_SDOUT_3ST_TDM);
1228
1229 pm_runtime_set_autosuspend_delay(&i2c_client->dev, 100);
1230 pm_runtime_use_autosuspend(&i2c_client->dev);
1231 pm_runtime_set_active(&i2c_client->dev);
1232 pm_runtime_enable(&i2c_client->dev);
1233
1234 ret = devm_snd_soc_register_component(&i2c_client->dev,
1235 &soc_component_dev_cs35l33, &cs35l33_dai, 1);
1236 if (ret < 0) {
1237 dev_err(&i2c_client->dev, "%s: Register component failed\n",
1238 __func__);
1239 goto err_enable;
1240 }
1241
1242 return 0;
1243
1244 err_enable:
1245 gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);
1246
1247 regulator_bulk_disable(cs35l33->num_core_supplies,
1248 cs35l33->core_supplies);
1249
1250 return ret;
1251 }
1252
cs35l33_i2c_remove(struct i2c_client * client)1253 static void cs35l33_i2c_remove(struct i2c_client *client)
1254 {
1255 struct cs35l33_private *cs35l33 = i2c_get_clientdata(client);
1256
1257 gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);
1258
1259 pm_runtime_disable(&client->dev);
1260 regulator_bulk_disable(cs35l33->num_core_supplies,
1261 cs35l33->core_supplies);
1262 }
1263
1264 static const struct of_device_id cs35l33_of_match[] = {
1265 { .compatible = "cirrus,cs35l33", },
1266 {},
1267 };
1268 MODULE_DEVICE_TABLE(of, cs35l33_of_match);
1269
1270 static const struct i2c_device_id cs35l33_id[] = {
1271 {"cs35l33", 0},
1272 {}
1273 };
1274
1275 MODULE_DEVICE_TABLE(i2c, cs35l33_id);
1276
1277 static struct i2c_driver cs35l33_i2c_driver = {
1278 .driver = {
1279 .name = "cs35l33",
1280 .pm = &cs35l33_pm_ops,
1281 .of_match_table = cs35l33_of_match,
1282
1283 },
1284 .id_table = cs35l33_id,
1285 .probe_new = cs35l33_i2c_probe,
1286 .remove = cs35l33_i2c_remove,
1287
1288 };
1289 module_i2c_driver(cs35l33_i2c_driver);
1290
1291 MODULE_DESCRIPTION("ASoC CS35L33 driver");
1292 MODULE_AUTHOR("Paul Handrigan, Cirrus Logic Inc, <paul.handrigan@cirrus.com>");
1293 MODULE_LICENSE("GPL");
1294