This source file includes following definitions.
- cs4265_readable_register
- cs4265_volatile_register
- cs4265_get_clk_index
- cs4265_set_sysclk
- cs4265_set_fmt
- cs4265_digital_mute
- cs4265_pcm_hw_params
- cs4265_set_bias_level
- cs4265_i2c_probe
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10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <linux/kernel.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/init.h>
15 #include <linux/delay.h>
16 #include <linux/i2c.h>
17 #include <linux/input.h>
18 #include <linux/regmap.h>
19 #include <linux/slab.h>
20 #include <linux/platform_device.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
26 #include <sound/initval.h>
27 #include <sound/tlv.h>
28 #include "cs4265.h"
29
30 struct cs4265_private {
31 struct regmap *regmap;
32 struct gpio_desc *reset_gpio;
33 u8 format;
34 u32 sysclk;
35 };
36
37 static const struct reg_default cs4265_reg_defaults[] = {
38 { CS4265_PWRCTL, 0x0F },
39 { CS4265_DAC_CTL, 0x08 },
40 { CS4265_ADC_CTL, 0x00 },
41 { CS4265_MCLK_FREQ, 0x00 },
42 { CS4265_SIG_SEL, 0x40 },
43 { CS4265_CHB_PGA_CTL, 0x00 },
44 { CS4265_CHA_PGA_CTL, 0x00 },
45 { CS4265_ADC_CTL2, 0x19 },
46 { CS4265_DAC_CHA_VOL, 0x00 },
47 { CS4265_DAC_CHB_VOL, 0x00 },
48 { CS4265_DAC_CTL2, 0xC0 },
49 { CS4265_SPDIF_CTL1, 0x00 },
50 { CS4265_SPDIF_CTL2, 0x00 },
51 { CS4265_INT_MASK, 0x00 },
52 { CS4265_STATUS_MODE_MSB, 0x00 },
53 { CS4265_STATUS_MODE_LSB, 0x00 },
54 };
55
56 static bool cs4265_readable_register(struct device *dev, unsigned int reg)
57 {
58 switch (reg) {
59 case CS4265_CHIP_ID ... CS4265_MAX_REGISTER:
60 return true;
61 default:
62 return false;
63 }
64 }
65
66 static bool cs4265_volatile_register(struct device *dev, unsigned int reg)
67 {
68 switch (reg) {
69 case CS4265_INT_STATUS:
70 return true;
71 default:
72 return false;
73 }
74 }
75
76 static DECLARE_TLV_DB_SCALE(pga_tlv, -1200, 50, 0);
77
78 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 0);
79
80 static const char * const digital_input_mux_text[] = {
81 "SDIN1", "SDIN2"
82 };
83
84 static SOC_ENUM_SINGLE_DECL(digital_input_mux_enum, CS4265_SIG_SEL, 7,
85 digital_input_mux_text);
86
87 static const struct snd_kcontrol_new digital_input_mux =
88 SOC_DAPM_ENUM("Digital Input Mux", digital_input_mux_enum);
89
90 static const char * const mic_linein_text[] = {
91 "MIC", "LINEIN"
92 };
93
94 static SOC_ENUM_SINGLE_DECL(mic_linein_enum, CS4265_ADC_CTL2, 0,
95 mic_linein_text);
96
97 static const char * const cam_mode_text[] = {
98 "One Byte", "Two Byte"
99 };
100
101 static SOC_ENUM_SINGLE_DECL(cam_mode_enum, CS4265_SPDIF_CTL1, 5,
102 cam_mode_text);
103
104 static const char * const cam_mono_stereo_text[] = {
105 "Stereo", "Mono"
106 };
107
108 static SOC_ENUM_SINGLE_DECL(spdif_mono_stereo_enum, CS4265_SPDIF_CTL2, 2,
109 cam_mono_stereo_text);
110
111 static const char * const mono_select_text[] = {
112 "Channel A", "Channel B"
113 };
114
115 static SOC_ENUM_SINGLE_DECL(spdif_mono_select_enum, CS4265_SPDIF_CTL2, 0,
116 mono_select_text);
117
118 static const struct snd_kcontrol_new mic_linein_mux =
119 SOC_DAPM_ENUM("ADC Input Capture Mux", mic_linein_enum);
120
121 static const struct snd_kcontrol_new loopback_ctl =
122 SOC_DAPM_SINGLE("Switch", CS4265_SIG_SEL, 1, 1, 0);
123
124 static const struct snd_kcontrol_new spdif_switch =
125 SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 0, 0);
126
127 static const struct snd_kcontrol_new dac_switch =
128 SOC_DAPM_SINGLE("Switch", CS4265_PWRCTL, 1, 1, 0);
129
130 static const struct snd_kcontrol_new cs4265_snd_controls[] = {
131
132 SOC_DOUBLE_R_SX_TLV("PGA Volume", CS4265_CHA_PGA_CTL,
133 CS4265_CHB_PGA_CTL, 0, 0x28, 0x30, pga_tlv),
134 SOC_DOUBLE_R_TLV("DAC Volume", CS4265_DAC_CHA_VOL,
135 CS4265_DAC_CHB_VOL, 0, 0xFF, 1, dac_tlv),
136 SOC_SINGLE("De-emp 44.1kHz Switch", CS4265_DAC_CTL, 1,
137 1, 0),
138 SOC_SINGLE("DAC INV Switch", CS4265_DAC_CTL2, 5,
139 1, 0),
140 SOC_SINGLE("DAC Zero Cross Switch", CS4265_DAC_CTL2, 6,
141 1, 0),
142 SOC_SINGLE("DAC Soft Ramp Switch", CS4265_DAC_CTL2, 7,
143 1, 0),
144 SOC_SINGLE("ADC HPF Switch", CS4265_ADC_CTL, 1,
145 1, 0),
146 SOC_SINGLE("ADC Zero Cross Switch", CS4265_ADC_CTL2, 3,
147 1, 1),
148 SOC_SINGLE("ADC Soft Ramp Switch", CS4265_ADC_CTL2, 7,
149 1, 0),
150 SOC_SINGLE("E to F Buffer Disable Switch", CS4265_SPDIF_CTL1,
151 6, 1, 0),
152 SOC_ENUM("C Data Access", cam_mode_enum),
153 SOC_SINGLE("SPDIF Switch", CS4265_SPDIF_CTL2, 5, 1, 1),
154 SOC_SINGLE("Validity Bit Control Switch", CS4265_SPDIF_CTL2,
155 3, 1, 0),
156 SOC_ENUM("SPDIF Mono/Stereo", spdif_mono_stereo_enum),
157 SOC_SINGLE("MMTLR Data Switch", CS4265_SPDIF_CTL2, 0, 1, 0),
158 SOC_ENUM("Mono Channel Select", spdif_mono_select_enum),
159 SND_SOC_BYTES("C Data Buffer", CS4265_C_DATA_BUFF, 24),
160 };
161
162 static const struct snd_soc_dapm_widget cs4265_dapm_widgets[] = {
163
164 SND_SOC_DAPM_INPUT("LINEINL"),
165 SND_SOC_DAPM_INPUT("LINEINR"),
166 SND_SOC_DAPM_INPUT("MICL"),
167 SND_SOC_DAPM_INPUT("MICR"),
168
169 SND_SOC_DAPM_AIF_OUT("DOUT", NULL, 0,
170 SND_SOC_NOPM, 0, 0),
171 SND_SOC_DAPM_AIF_OUT("SPDIFOUT", NULL, 0,
172 SND_SOC_NOPM, 0, 0),
173
174 SND_SOC_DAPM_MUX("ADC Mux", SND_SOC_NOPM, 0, 0, &mic_linein_mux),
175
176 SND_SOC_DAPM_ADC("ADC", NULL, CS4265_PWRCTL, 2, 1),
177 SND_SOC_DAPM_PGA("Pre-amp MIC", CS4265_PWRCTL, 3,
178 1, NULL, 0),
179
180 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM,
181 0, 0, &digital_input_mux),
182
183 SND_SOC_DAPM_MIXER("SDIN1 Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
184 SND_SOC_DAPM_MIXER("SDIN2 Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
185 SND_SOC_DAPM_MIXER("SPDIF Transmitter", SND_SOC_NOPM, 0, 0, NULL, 0),
186
187 SND_SOC_DAPM_SWITCH("Loopback", SND_SOC_NOPM, 0, 0,
188 &loopback_ctl),
189 SND_SOC_DAPM_SWITCH("SPDIF", SND_SOC_NOPM, 0, 0,
190 &spdif_switch),
191 SND_SOC_DAPM_SWITCH("DAC", CS4265_PWRCTL, 1, 1,
192 &dac_switch),
193
194 SND_SOC_DAPM_AIF_IN("DIN1", NULL, 0,
195 SND_SOC_NOPM, 0, 0),
196 SND_SOC_DAPM_AIF_IN("DIN2", NULL, 0,
197 SND_SOC_NOPM, 0, 0),
198 SND_SOC_DAPM_AIF_IN("TXIN", NULL, 0,
199 CS4265_SPDIF_CTL2, 5, 1),
200
201 SND_SOC_DAPM_OUTPUT("LINEOUTL"),
202 SND_SOC_DAPM_OUTPUT("LINEOUTR"),
203
204 };
205
206 static const struct snd_soc_dapm_route cs4265_audio_map[] = {
207
208 {"DIN1", NULL, "DAI1 Playback"},
209 {"DIN2", NULL, "DAI2 Playback"},
210 {"SDIN1 Input Mixer", NULL, "DIN1"},
211 {"SDIN2 Input Mixer", NULL, "DIN2"},
212 {"Input Mux", "SDIN1", "SDIN1 Input Mixer"},
213 {"Input Mux", "SDIN2", "SDIN2 Input Mixer"},
214 {"DAC", "Switch", "Input Mux"},
215 {"SPDIF", "Switch", "Input Mux"},
216 {"LINEOUTL", NULL, "DAC"},
217 {"LINEOUTR", NULL, "DAC"},
218 {"SPDIFOUT", NULL, "SPDIF"},
219
220 {"Pre-amp MIC", NULL, "MICL"},
221 {"Pre-amp MIC", NULL, "MICR"},
222 {"ADC Mux", "MIC", "Pre-amp MIC"},
223 {"ADC Mux", "LINEIN", "LINEINL"},
224 {"ADC Mux", "LINEIN", "LINEINR"},
225 {"ADC", NULL, "ADC Mux"},
226 {"DOUT", NULL, "ADC"},
227 {"DAI1 Capture", NULL, "DOUT"},
228 {"DAI2 Capture", NULL, "DOUT"},
229
230
231 {"Loopback", "Switch", "ADC"},
232 {"DAC", NULL, "Loopback"},
233 };
234
235 struct cs4265_clk_para {
236 u32 mclk;
237 u32 rate;
238 u8 fm_mode;
239 u8 mclkdiv;
240 };
241
242 static const struct cs4265_clk_para clk_map_table[] = {
243
244 {8192000, 32000, 0, 0},
245 {12288000, 32000, 0, 1},
246 {16384000, 32000, 0, 2},
247 {24576000, 32000, 0, 3},
248 {32768000, 32000, 0, 4},
249
250
251 {11289600, 44100, 0, 0},
252 {16934400, 44100, 0, 1},
253 {22579200, 44100, 0, 2},
254 {33868000, 44100, 0, 3},
255 {45158400, 44100, 0, 4},
256
257
258 {12288000, 48000, 0, 0},
259 {18432000, 48000, 0, 1},
260 {24576000, 48000, 0, 2},
261 {36864000, 48000, 0, 3},
262 {49152000, 48000, 0, 4},
263
264
265 {8192000, 64000, 1, 0},
266 {12288000, 64000, 1, 1},
267 {16934400, 64000, 1, 2},
268 {24576000, 64000, 1, 3},
269 {32768000, 64000, 1, 4},
270
271
272 {11289600, 88200, 1, 0},
273 {16934400, 88200, 1, 1},
274 {22579200, 88200, 1, 2},
275 {33868000, 88200, 1, 3},
276 {45158400, 88200, 1, 4},
277
278
279 {12288000, 96000, 1, 0},
280 {18432000, 96000, 1, 1},
281 {24576000, 96000, 1, 2},
282 {36864000, 96000, 1, 3},
283 {49152000, 96000, 1, 4},
284
285
286 {8192000, 128000, 2, 0},
287 {12288000, 128000, 2, 1},
288 {16934400, 128000, 2, 2},
289 {24576000, 128000, 2, 3},
290 {32768000, 128000, 2, 4},
291
292
293 {11289600, 176400, 2, 0},
294 {16934400, 176400, 2, 1},
295 {22579200, 176400, 2, 2},
296 {33868000, 176400, 2, 3},
297 {49152000, 176400, 2, 4},
298
299
300 {12288000, 192000, 2, 0},
301 {18432000, 192000, 2, 1},
302 {24576000, 192000, 2, 2},
303 {36864000, 192000, 2, 3},
304 {49152000, 192000, 2, 4},
305 };
306
307 static int cs4265_get_clk_index(int mclk, int rate)
308 {
309 int i;
310
311 for (i = 0; i < ARRAY_SIZE(clk_map_table); i++) {
312 if (clk_map_table[i].rate == rate &&
313 clk_map_table[i].mclk == mclk)
314 return i;
315 }
316 return -EINVAL;
317 }
318
319 static int cs4265_set_sysclk(struct snd_soc_dai *codec_dai, int clk_id,
320 unsigned int freq, int dir)
321 {
322 struct snd_soc_component *component = codec_dai->component;
323 struct cs4265_private *cs4265 = snd_soc_component_get_drvdata(component);
324 int i;
325
326 if (clk_id != 0) {
327 dev_err(component->dev, "Invalid clk_id %d\n", clk_id);
328 return -EINVAL;
329 }
330 for (i = 0; i < ARRAY_SIZE(clk_map_table); i++) {
331 if (clk_map_table[i].mclk == freq) {
332 cs4265->sysclk = freq;
333 return 0;
334 }
335 }
336 cs4265->sysclk = 0;
337 dev_err(component->dev, "Invalid freq parameter %d\n", freq);
338 return -EINVAL;
339 }
340
341 static int cs4265_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
342 {
343 struct snd_soc_component *component = codec_dai->component;
344 struct cs4265_private *cs4265 = snd_soc_component_get_drvdata(component);
345 u8 iface = 0;
346
347 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
348 case SND_SOC_DAIFMT_CBM_CFM:
349 snd_soc_component_update_bits(component, CS4265_ADC_CTL,
350 CS4265_ADC_MASTER,
351 CS4265_ADC_MASTER);
352 break;
353 case SND_SOC_DAIFMT_CBS_CFS:
354 snd_soc_component_update_bits(component, CS4265_ADC_CTL,
355 CS4265_ADC_MASTER,
356 0);
357 break;
358 default:
359 return -EINVAL;
360 }
361
362
363 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
364 case SND_SOC_DAIFMT_I2S:
365 iface |= SND_SOC_DAIFMT_I2S;
366 break;
367 case SND_SOC_DAIFMT_RIGHT_J:
368 iface |= SND_SOC_DAIFMT_RIGHT_J;
369 break;
370 case SND_SOC_DAIFMT_LEFT_J:
371 iface |= SND_SOC_DAIFMT_LEFT_J;
372 break;
373 default:
374 return -EINVAL;
375 }
376
377 cs4265->format = iface;
378 return 0;
379 }
380
381 static int cs4265_digital_mute(struct snd_soc_dai *dai, int mute)
382 {
383 struct snd_soc_component *component = dai->component;
384
385 if (mute) {
386 snd_soc_component_update_bits(component, CS4265_DAC_CTL,
387 CS4265_DAC_CTL_MUTE,
388 CS4265_DAC_CTL_MUTE);
389 snd_soc_component_update_bits(component, CS4265_SPDIF_CTL2,
390 CS4265_SPDIF_CTL2_MUTE,
391 CS4265_SPDIF_CTL2_MUTE);
392 } else {
393 snd_soc_component_update_bits(component, CS4265_DAC_CTL,
394 CS4265_DAC_CTL_MUTE,
395 0);
396 snd_soc_component_update_bits(component, CS4265_SPDIF_CTL2,
397 CS4265_SPDIF_CTL2_MUTE,
398 0);
399 }
400 return 0;
401 }
402
403 static int cs4265_pcm_hw_params(struct snd_pcm_substream *substream,
404 struct snd_pcm_hw_params *params,
405 struct snd_soc_dai *dai)
406 {
407 struct snd_soc_component *component = dai->component;
408 struct cs4265_private *cs4265 = snd_soc_component_get_drvdata(component);
409 int index;
410
411 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE &&
412 ((cs4265->format & SND_SOC_DAIFMT_FORMAT_MASK)
413 == SND_SOC_DAIFMT_RIGHT_J))
414 return -EINVAL;
415
416 index = cs4265_get_clk_index(cs4265->sysclk, params_rate(params));
417 if (index >= 0) {
418 snd_soc_component_update_bits(component, CS4265_ADC_CTL,
419 CS4265_ADC_FM, clk_map_table[index].fm_mode << 6);
420 snd_soc_component_update_bits(component, CS4265_MCLK_FREQ,
421 CS4265_MCLK_FREQ_MASK,
422 clk_map_table[index].mclkdiv << 4);
423
424 } else {
425 dev_err(component->dev, "can't get correct mclk\n");
426 return -EINVAL;
427 }
428
429 switch (cs4265->format & SND_SOC_DAIFMT_FORMAT_MASK) {
430 case SND_SOC_DAIFMT_I2S:
431 snd_soc_component_update_bits(component, CS4265_DAC_CTL,
432 CS4265_DAC_CTL_DIF, (1 << 4));
433 snd_soc_component_update_bits(component, CS4265_ADC_CTL,
434 CS4265_ADC_DIF, (1 << 4));
435 snd_soc_component_update_bits(component, CS4265_SPDIF_CTL2,
436 CS4265_SPDIF_CTL2_DIF, (1 << 6));
437 break;
438 case SND_SOC_DAIFMT_RIGHT_J:
439 if (params_width(params) == 16) {
440 snd_soc_component_update_bits(component, CS4265_DAC_CTL,
441 CS4265_DAC_CTL_DIF, (2 << 4));
442 snd_soc_component_update_bits(component, CS4265_SPDIF_CTL2,
443 CS4265_SPDIF_CTL2_DIF, (2 << 6));
444 } else {
445 snd_soc_component_update_bits(component, CS4265_DAC_CTL,
446 CS4265_DAC_CTL_DIF, (3 << 4));
447 snd_soc_component_update_bits(component, CS4265_SPDIF_CTL2,
448 CS4265_SPDIF_CTL2_DIF, (3 << 6));
449 }
450 break;
451 case SND_SOC_DAIFMT_LEFT_J:
452 snd_soc_component_update_bits(component, CS4265_DAC_CTL,
453 CS4265_DAC_CTL_DIF, 0);
454 snd_soc_component_update_bits(component, CS4265_ADC_CTL,
455 CS4265_ADC_DIF, 0);
456 snd_soc_component_update_bits(component, CS4265_SPDIF_CTL2,
457 CS4265_SPDIF_CTL2_DIF, 0);
458
459 break;
460 default:
461 return -EINVAL;
462 }
463 return 0;
464 }
465
466 static int cs4265_set_bias_level(struct snd_soc_component *component,
467 enum snd_soc_bias_level level)
468 {
469 switch (level) {
470 case SND_SOC_BIAS_ON:
471 break;
472 case SND_SOC_BIAS_PREPARE:
473 snd_soc_component_update_bits(component, CS4265_PWRCTL,
474 CS4265_PWRCTL_PDN, 0);
475 break;
476 case SND_SOC_BIAS_STANDBY:
477 snd_soc_component_update_bits(component, CS4265_PWRCTL,
478 CS4265_PWRCTL_PDN,
479 CS4265_PWRCTL_PDN);
480 break;
481 case SND_SOC_BIAS_OFF:
482 snd_soc_component_update_bits(component, CS4265_PWRCTL,
483 CS4265_PWRCTL_PDN,
484 CS4265_PWRCTL_PDN);
485 break;
486 }
487 return 0;
488 }
489
490 #define CS4265_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
491 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
492 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \
493 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
494
495 #define CS4265_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE | \
496 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_U24_LE | \
497 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_U32_LE)
498
499 static const struct snd_soc_dai_ops cs4265_ops = {
500 .hw_params = cs4265_pcm_hw_params,
501 .digital_mute = cs4265_digital_mute,
502 .set_fmt = cs4265_set_fmt,
503 .set_sysclk = cs4265_set_sysclk,
504 };
505
506 static struct snd_soc_dai_driver cs4265_dai[] = {
507 {
508 .name = "cs4265-dai1",
509 .playback = {
510 .stream_name = "DAI1 Playback",
511 .channels_min = 1,
512 .channels_max = 2,
513 .rates = CS4265_RATES,
514 .formats = CS4265_FORMATS,
515 },
516 .capture = {
517 .stream_name = "DAI1 Capture",
518 .channels_min = 1,
519 .channels_max = 2,
520 .rates = CS4265_RATES,
521 .formats = CS4265_FORMATS,
522 },
523 .ops = &cs4265_ops,
524 },
525 {
526 .name = "cs4265-dai2",
527 .playback = {
528 .stream_name = "DAI2 Playback",
529 .channels_min = 1,
530 .channels_max = 2,
531 .rates = CS4265_RATES,
532 .formats = CS4265_FORMATS,
533 },
534 .capture = {
535 .stream_name = "DAI2 Capture",
536 .channels_min = 1,
537 .channels_max = 2,
538 .rates = CS4265_RATES,
539 .formats = CS4265_FORMATS,
540 },
541 .ops = &cs4265_ops,
542 },
543 };
544
545 static const struct snd_soc_component_driver soc_component_cs4265 = {
546 .set_bias_level = cs4265_set_bias_level,
547 .controls = cs4265_snd_controls,
548 .num_controls = ARRAY_SIZE(cs4265_snd_controls),
549 .dapm_widgets = cs4265_dapm_widgets,
550 .num_dapm_widgets = ARRAY_SIZE(cs4265_dapm_widgets),
551 .dapm_routes = cs4265_audio_map,
552 .num_dapm_routes = ARRAY_SIZE(cs4265_audio_map),
553 .idle_bias_on = 1,
554 .use_pmdown_time = 1,
555 .endianness = 1,
556 .non_legacy_dai_naming = 1,
557 };
558
559 static const struct regmap_config cs4265_regmap = {
560 .reg_bits = 8,
561 .val_bits = 8,
562
563 .max_register = CS4265_MAX_REGISTER,
564 .reg_defaults = cs4265_reg_defaults,
565 .num_reg_defaults = ARRAY_SIZE(cs4265_reg_defaults),
566 .readable_reg = cs4265_readable_register,
567 .volatile_reg = cs4265_volatile_register,
568 .cache_type = REGCACHE_RBTREE,
569 };
570
571 static int cs4265_i2c_probe(struct i2c_client *i2c_client,
572 const struct i2c_device_id *id)
573 {
574 struct cs4265_private *cs4265;
575 int ret = 0;
576 unsigned int devid = 0;
577 unsigned int reg;
578
579 cs4265 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4265_private),
580 GFP_KERNEL);
581 if (cs4265 == NULL)
582 return -ENOMEM;
583
584 cs4265->regmap = devm_regmap_init_i2c(i2c_client, &cs4265_regmap);
585 if (IS_ERR(cs4265->regmap)) {
586 ret = PTR_ERR(cs4265->regmap);
587 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
588 return ret;
589 }
590
591 cs4265->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
592 "reset", GPIOD_OUT_LOW);
593 if (IS_ERR(cs4265->reset_gpio))
594 return PTR_ERR(cs4265->reset_gpio);
595
596 if (cs4265->reset_gpio) {
597 mdelay(1);
598 gpiod_set_value_cansleep(cs4265->reset_gpio, 1);
599 }
600
601 i2c_set_clientdata(i2c_client, cs4265);
602
603 ret = regmap_read(cs4265->regmap, CS4265_CHIP_ID, ®);
604 devid = reg & CS4265_CHIP_ID_MASK;
605 if (devid != CS4265_CHIP_ID_VAL) {
606 ret = -ENODEV;
607 dev_err(&i2c_client->dev,
608 "CS4265 Device ID (%X). Expected %X\n",
609 devid, CS4265_CHIP_ID);
610 return ret;
611 }
612 dev_info(&i2c_client->dev,
613 "CS4265 Version %x\n",
614 reg & CS4265_REV_ID_MASK);
615
616 regmap_write(cs4265->regmap, CS4265_PWRCTL, 0x0F);
617
618 ret = devm_snd_soc_register_component(&i2c_client->dev,
619 &soc_component_cs4265, cs4265_dai,
620 ARRAY_SIZE(cs4265_dai));
621 return ret;
622 }
623
624 static const struct of_device_id cs4265_of_match[] = {
625 { .compatible = "cirrus,cs4265", },
626 { }
627 };
628 MODULE_DEVICE_TABLE(of, cs4265_of_match);
629
630 static const struct i2c_device_id cs4265_id[] = {
631 { "cs4265", 0 },
632 { }
633 };
634 MODULE_DEVICE_TABLE(i2c, cs4265_id);
635
636 static struct i2c_driver cs4265_i2c_driver = {
637 .driver = {
638 .name = "cs4265",
639 .of_match_table = cs4265_of_match,
640 },
641 .id_table = cs4265_id,
642 .probe = cs4265_i2c_probe,
643 };
644
645 module_i2c_driver(cs4265_i2c_driver);
646
647 MODULE_DESCRIPTION("ASoC CS4265 driver");
648 MODULE_AUTHOR("Paul Handrigan, Cirrus Logic Inc, <paul.handrigan@cirrus.com>");
649 MODULE_LICENSE("GPL");