1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // rk817 ALSA SoC Audio driver
4 //
5 // Copyright (c) 2018, Fuzhou Rockchip Electronics Co., Ltd All rights reserved.
6
7 #include <linux/clk.h>
8 #include <linux/device.h>
9 #include <linux/delay.h>
10 #include <linux/mfd/rk808.h>
11 #include <linux/module.h>
12 #include <linux/of.h>
13 #include <linux/platform_device.h>
14 #include <linux/regmap.h>
15 #include <sound/core.h>
16 #include <sound/pcm_params.h>
17 #include <sound/soc.h>
18 #include <sound/tlv.h>
19
20 struct rk817_codec_priv {
21 struct snd_soc_component *component;
22 struct rk808 *rk808;
23 struct clk *mclk;
24 unsigned int stereo_sysclk;
25 bool mic_in_differential;
26 };
27
28 /*
29 * This sets the codec up with the values defined in the default implementation including the APLL
30 * from the Rockchip vendor kernel. I do not know if these values are universal despite differing
31 * from the default values defined above and taken from the datasheet, or implementation specific.
32 * I don't have another implementation to compare from the Rockchip sources. Hard-coding for now.
33 * Additionally, I do not know according to the documentation the units accepted for the clock
34 * values, so for the moment those are left unvalidated.
35 */
36
37 static int rk817_init(struct snd_soc_component *component)
38 {
39 struct rk817_codec_priv *rk817 = snd_soc_component_get_drvdata(component);
40
41 snd_soc_component_write(component, RK817_CODEC_DDAC_POPD_DACST, 0x02);
42 snd_soc_component_write(component, RK817_CODEC_DDAC_SR_LMT0, 0x02);
43 snd_soc_component_write(component, RK817_CODEC_DADC_SR_ACL0, 0x02);
44 snd_soc_component_write(component, RK817_CODEC_DTOP_VUCTIME, 0xf4);
45 if (rk817->mic_in_differential) {
46 snd_soc_component_update_bits(component, RK817_CODEC_AMIC_CFG0, MIC_DIFF_MASK,
47 MIC_DIFF_EN);
48 }
49
50 return 0;
51 }
52
53 static int rk817_set_component_pll(struct snd_soc_component *component,
54 int pll_id, int source, unsigned int freq_in,
55 unsigned int freq_out)
56 {
57 /* Set resistor value and charge pump current for PLL. */
58 snd_soc_component_write(component, RK817_CODEC_APLL_CFG1, 0x58);
59 /* Set the PLL feedback clock divide value (values not documented). */
60 snd_soc_component_write(component, RK817_CODEC_APLL_CFG2, 0x2d);
61 /* Set the PLL pre-divide value (values not documented). */
62 snd_soc_component_write(component, RK817_CODEC_APLL_CFG3, 0x0c);
63 /* Set the PLL VCO output clock divide and PLL divided ratio of PLL High Clk (values not
64 * documented).
65 */
66 snd_soc_component_write(component, RK817_CODEC_APLL_CFG4, 0xa5);
67
68 return 0;
69 }
70
71 /*
72 * DDAC/DADC L/R volume setting
73 * 0db~-95db, 0.375db/step, for example:
74 * 0x00: 0dB
75 * 0xff: -95dB
76 */
77
78 static const DECLARE_TLV_DB_MINMAX(rk817_vol_tlv, -9500, 0);
79
80 /*
81 * PGA GAIN L/R volume setting
82 * 27db~-18db, 3db/step, for example:
83 * 0x0: -18dB
84 * 0xf: 27dB
85 */
86
87 static const DECLARE_TLV_DB_MINMAX(rk817_gain_tlv, -1800, 2700);
88
89 static const struct snd_kcontrol_new rk817_volume_controls[] = {
90 SOC_DOUBLE_R_RANGE_TLV("Master Playback Volume", RK817_CODEC_DDAC_VOLL,
91 RK817_CODEC_DDAC_VOLR, 0, 0x00, 0xff, 1, rk817_vol_tlv),
92 SOC_DOUBLE_R_RANGE_TLV("Master Capture Volume", RK817_CODEC_DADC_VOLL,
93 RK817_CODEC_DADC_VOLR, 0, 0x00, 0xff, 1, rk817_vol_tlv),
94 SOC_DOUBLE_TLV("Mic Capture Gain", RK817_CODEC_DMIC_PGA_GAIN, 4, 0, 0xf, 0,
95 rk817_gain_tlv),
96 };
97
98 /* Since the speaker output and L headphone pin are internally the same, make audio path mutually
99 * exclusive with a mux.
100 */
101
102 static const char *dac_mux_text[] = {
103 "HP",
104 "SPK",
105 };
106
107 static SOC_ENUM_SINGLE_VIRT_DECL(dac_enum, dac_mux_text);
108
109 static const struct snd_kcontrol_new dac_mux =
110 SOC_DAPM_ENUM("Playback Mux", dac_enum);
111
112 static const struct snd_soc_dapm_widget rk817_dapm_widgets[] = {
113
114 /* capture/playback common */
115 SND_SOC_DAPM_SUPPLY("LDO Regulator", RK817_CODEC_AREF_RTCFG1, 6, 0, NULL, 0),
116 SND_SOC_DAPM_SUPPLY("IBIAS Block", RK817_CODEC_AREF_RTCFG1, 2, 1, NULL, 0),
117 SND_SOC_DAPM_SUPPLY("VAvg Buffer", RK817_CODEC_AREF_RTCFG1, 1, 1, NULL, 0),
118 SND_SOC_DAPM_SUPPLY("PLL Power", RK817_CODEC_APLL_CFG5, 0, 1, NULL, 0),
119 SND_SOC_DAPM_SUPPLY("I2S TX1 Transfer Start", RK817_CODEC_DI2S_RXCMD_TSD, 5, 0, NULL, 0),
120
121 /* capture path common */
122 SND_SOC_DAPM_SUPPLY("ADC Clock", RK817_CODEC_DTOP_DIGEN_CLKE, 7, 0, NULL, 0),
123 SND_SOC_DAPM_SUPPLY("I2S TX Clock", RK817_CODEC_DTOP_DIGEN_CLKE, 6, 0, NULL, 0),
124 SND_SOC_DAPM_SUPPLY("ADC Channel Enable", RK817_CODEC_DTOP_DIGEN_CLKE, 5, 0, NULL, 0),
125 SND_SOC_DAPM_SUPPLY("I2S TX Channel Enable", RK817_CODEC_DTOP_DIGEN_CLKE, 4, 0, NULL, 0),
126 SND_SOC_DAPM_SUPPLY("MIC Power On", RK817_CODEC_AMIC_CFG0, 6, 1, NULL, 0),
127 SND_SOC_DAPM_SUPPLY("I2S TX3 Transfer Start", RK817_CODEC_DI2S_TXCR3_TXCMD, 7, 0, NULL, 0),
128 SND_SOC_DAPM_SUPPLY("I2S TX3 Right Justified", RK817_CODEC_DI2S_TXCR3_TXCMD, 3, 0, NULL, 0),
129
130 /* capture path L */
131 SND_SOC_DAPM_ADC("ADC L", "Capture", RK817_CODEC_AADC_CFG0, 7, 1),
132 SND_SOC_DAPM_SUPPLY("PGA L Power On", RK817_CODEC_AMIC_CFG0, 5, 1, NULL, 0),
133 SND_SOC_DAPM_SUPPLY("Mic Boost L1", RK817_CODEC_AMIC_CFG0, 3, 0, NULL, 0),
134 SND_SOC_DAPM_SUPPLY("Mic Boost L2", RK817_CODEC_AMIC_CFG0, 2, 0, NULL, 0),
135
136 /* capture path R */
137 SND_SOC_DAPM_ADC("ADC R", "Capture", RK817_CODEC_AADC_CFG0, 6, 1),
138 SND_SOC_DAPM_SUPPLY("PGA R Power On", RK817_CODEC_AMIC_CFG0, 4, 1, NULL, 0),
139 SND_SOC_DAPM_SUPPLY("Mic Boost R1", RK817_CODEC_AMIC_CFG0, 3, 0, NULL, 0),
140 SND_SOC_DAPM_SUPPLY("Mic Boost R2", RK817_CODEC_AMIC_CFG0, 3, 0, NULL, 0),
141
142 /* playback path common */
143 SND_SOC_DAPM_SUPPLY("DAC Clock", RK817_CODEC_DTOP_DIGEN_CLKE, 3, 0, NULL, 0),
144 SND_SOC_DAPM_SUPPLY("I2S RX Clock", RK817_CODEC_DTOP_DIGEN_CLKE, 2, 0, NULL, 0),
145 SND_SOC_DAPM_SUPPLY("DAC Channel Enable", RK817_CODEC_DTOP_DIGEN_CLKE, 1, 0, NULL, 0),
146 SND_SOC_DAPM_SUPPLY("I2S RX Channel Enable", RK817_CODEC_DTOP_DIGEN_CLKE, 0, 0, NULL, 0),
147 SND_SOC_DAPM_SUPPLY("DAC Bias", RK817_CODEC_ADAC_CFG1, 3, 1, NULL, 0),
148 SND_SOC_DAPM_SUPPLY("DAC Mute Off", RK817_CODEC_DDAC_MUTE_MIXCTL, 0, 1, NULL, 0),
149
150 /* playback path speaker */
151 SND_SOC_DAPM_SUPPLY("Class D Mode", RK817_CODEC_DDAC_MUTE_MIXCTL, 4, 0, NULL, 0),
152 SND_SOC_DAPM_SUPPLY("High Pass Filter", RK817_CODEC_DDAC_MUTE_MIXCTL, 7, 0, NULL, 0),
153 SND_SOC_DAPM_DAC("SPK DAC", "Playback", RK817_CODEC_ADAC_CFG1, 2, 1),
154 SND_SOC_DAPM_SUPPLY("Enable Class D", RK817_CODEC_ACLASSD_CFG1, 7, 0, NULL, 0),
155 SND_SOC_DAPM_SUPPLY("Disable Class D Mute Ramp", RK817_CODEC_ACLASSD_CFG1, 6, 1, NULL, 0),
156 SND_SOC_DAPM_SUPPLY("Class D Mute Rate 1", RK817_CODEC_ACLASSD_CFG1, 3, 0, NULL, 0),
157 SND_SOC_DAPM_SUPPLY("Class D Mute Rate 2", RK817_CODEC_ACLASSD_CFG1, 2, 1, NULL, 0),
158 SND_SOC_DAPM_SUPPLY("Class D OCPP 2", RK817_CODEC_ACLASSD_CFG2, 5, 0, NULL, 0),
159 SND_SOC_DAPM_SUPPLY("Class D OCPP 3", RK817_CODEC_ACLASSD_CFG2, 4, 0, NULL, 0),
160 SND_SOC_DAPM_SUPPLY("Class D OCPN 2", RK817_CODEC_ACLASSD_CFG2, 1, 0, NULL, 0),
161 SND_SOC_DAPM_SUPPLY("Class D OCPN 3", RK817_CODEC_ACLASSD_CFG2, 0, 0, NULL, 0),
162
163 /* playback path headphones */
164 SND_SOC_DAPM_SUPPLY("Headphone Charge Pump", RK817_CODEC_AHP_CP, 4, 0, NULL, 0),
165 SND_SOC_DAPM_SUPPLY("Headphone CP Discharge LDO", RK817_CODEC_AHP_CP, 3, 1, NULL, 0),
166 SND_SOC_DAPM_SUPPLY("Headphone OStage", RK817_CODEC_AHP_CFG0, 6, 1, NULL, 0),
167 SND_SOC_DAPM_SUPPLY("Headphone Pre Amp", RK817_CODEC_AHP_CFG0, 5, 1, NULL, 0),
168 SND_SOC_DAPM_DAC("DAC L", "Playback", RK817_CODEC_ADAC_CFG1, 1, 1),
169 SND_SOC_DAPM_DAC("DAC R", "Playback", RK817_CODEC_ADAC_CFG1, 0, 1),
170
171 /* Mux for input/output path selection */
172 SND_SOC_DAPM_MUX("Playback Mux", SND_SOC_NOPM, 1, 0, &dac_mux),
173
174 /* Pins for Simple Card Bindings */
175 SND_SOC_DAPM_INPUT("MICL"),
176 SND_SOC_DAPM_INPUT("MICR"),
177 SND_SOC_DAPM_OUTPUT("HPOL"),
178 SND_SOC_DAPM_OUTPUT("HPOR"),
179 SND_SOC_DAPM_OUTPUT("SPKO"),
180 };
181
182 static const struct snd_soc_dapm_route rk817_dapm_routes[] = {
183
184 /* capture path */
185 /* left mic */
186 {"ADC L", NULL, "LDO Regulator"},
187 {"ADC L", NULL, "IBIAS Block"},
188 {"ADC L", NULL, "VAvg Buffer"},
189 {"ADC L", NULL, "PLL Power"},
190 {"ADC L", NULL, "ADC Clock"},
191 {"ADC L", NULL, "I2S TX Clock"},
192 {"ADC L", NULL, "ADC Channel Enable"},
193 {"ADC L", NULL, "I2S TX Channel Enable"},
194 {"ADC L", NULL, "I2S TX1 Transfer Start"},
195 {"MICL", NULL, "MIC Power On"},
196 {"MICL", NULL, "PGA L Power On"},
197 {"MICL", NULL, "Mic Boost L1"},
198 {"MICL", NULL, "Mic Boost L2"},
199 {"MICL", NULL, "I2S TX3 Transfer Start"},
200 {"MICL", NULL, "I2S TX3 Right Justified"},
201 {"ADC L", NULL, "MICL"},
202
203 /* right mic */
204 {"ADC R", NULL, "LDO Regulator"},
205 {"ADC R", NULL, "IBIAS Block"},
206 {"ADC R", NULL, "VAvg Buffer"},
207 {"ADC R", NULL, "PLL Power"},
208 {"ADC R", NULL, "ADC Clock"},
209 {"ADC R", NULL, "I2S TX Clock"},
210 {"ADC R", NULL, "ADC Channel Enable"},
211 {"ADC R", NULL, "I2S TX Channel Enable"},
212 {"ADC R", NULL, "I2S TX1 Transfer Start"},
213 {"MICR", NULL, "MIC Power On"},
214 {"MICR", NULL, "PGA R Power On"},
215 {"MICR", NULL, "Mic Boost R1"},
216 {"MICR", NULL, "Mic Boost R2"},
217 {"MICR", NULL, "I2S TX3 Transfer Start"},
218 {"MICR", NULL, "I2S TX3 Right Justified"},
219 {"ADC R", NULL, "MICR"},
220
221 /* playback path */
222 /* speaker path */
223 {"SPK DAC", NULL, "LDO Regulator"},
224 {"SPK DAC", NULL, "IBIAS Block"},
225 {"SPK DAC", NULL, "VAvg Buffer"},
226 {"SPK DAC", NULL, "PLL Power"},
227 {"SPK DAC", NULL, "I2S TX1 Transfer Start"},
228 {"SPK DAC", NULL, "DAC Clock"},
229 {"SPK DAC", NULL, "I2S RX Clock"},
230 {"SPK DAC", NULL, "DAC Channel Enable"},
231 {"SPK DAC", NULL, "I2S RX Channel Enable"},
232 {"SPK DAC", NULL, "Class D Mode"},
233 {"SPK DAC", NULL, "DAC Bias"},
234 {"SPK DAC", NULL, "DAC Mute Off"},
235 {"SPK DAC", NULL, "Enable Class D"},
236 {"SPK DAC", NULL, "Disable Class D Mute Ramp"},
237 {"SPK DAC", NULL, "Class D Mute Rate 1"},
238 {"SPK DAC", NULL, "Class D Mute Rate 2"},
239 {"SPK DAC", NULL, "Class D OCPP 2"},
240 {"SPK DAC", NULL, "Class D OCPP 3"},
241 {"SPK DAC", NULL, "Class D OCPN 2"},
242 {"SPK DAC", NULL, "Class D OCPN 3"},
243 {"SPK DAC", NULL, "High Pass Filter"},
244
245 /* headphone path L */
246 {"DAC L", NULL, "LDO Regulator"},
247 {"DAC L", NULL, "IBIAS Block"},
248 {"DAC L", NULL, "VAvg Buffer"},
249 {"DAC L", NULL, "PLL Power"},
250 {"DAC L", NULL, "I2S TX1 Transfer Start"},
251 {"DAC L", NULL, "DAC Clock"},
252 {"DAC L", NULL, "I2S RX Clock"},
253 {"DAC L", NULL, "DAC Channel Enable"},
254 {"DAC L", NULL, "I2S RX Channel Enable"},
255 {"DAC L", NULL, "DAC Bias"},
256 {"DAC L", NULL, "DAC Mute Off"},
257 {"DAC L", NULL, "Headphone Charge Pump"},
258 {"DAC L", NULL, "Headphone CP Discharge LDO"},
259 {"DAC L", NULL, "Headphone OStage"},
260 {"DAC L", NULL, "Headphone Pre Amp"},
261
262 /* headphone path R */
263 {"DAC R", NULL, "LDO Regulator"},
264 {"DAC R", NULL, "IBIAS Block"},
265 {"DAC R", NULL, "VAvg Buffer"},
266 {"DAC R", NULL, "PLL Power"},
267 {"DAC R", NULL, "I2S TX1 Transfer Start"},
268 {"DAC R", NULL, "DAC Clock"},
269 {"DAC R", NULL, "I2S RX Clock"},
270 {"DAC R", NULL, "DAC Channel Enable"},
271 {"DAC R", NULL, "I2S RX Channel Enable"},
272 {"DAC R", NULL, "DAC Bias"},
273 {"DAC R", NULL, "DAC Mute Off"},
274 {"DAC R", NULL, "Headphone Charge Pump"},
275 {"DAC R", NULL, "Headphone CP Discharge LDO"},
276 {"DAC R", NULL, "Headphone OStage"},
277 {"DAC R", NULL, "Headphone Pre Amp"},
278
279 /* mux path for output selection */
280 {"Playback Mux", "HP", "DAC L"},
281 {"Playback Mux", "HP", "DAC R"},
282 {"Playback Mux", "SPK", "SPK DAC"},
283 {"SPKO", NULL, "Playback Mux"},
284 {"HPOL", NULL, "Playback Mux"},
285 {"HPOR", NULL, "Playback Mux"},
286 };
287
288 static int rk817_set_dai_sysclk(struct snd_soc_dai *codec_dai,
289 int clk_id, unsigned int freq, int dir)
290 {
291 struct snd_soc_component *component = codec_dai->component;
292 struct rk817_codec_priv *rk817 = snd_soc_component_get_drvdata(component);
293
294 rk817->stereo_sysclk = freq;
295
296 return 0;
297 }
298
299 static int rk817_set_dai_fmt(struct snd_soc_dai *codec_dai,
300 unsigned int fmt)
301 {
302 struct snd_soc_component *component = codec_dai->component;
303 unsigned int i2s_mst = 0;
304
305 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
306 case SND_SOC_DAIFMT_CBS_CFS:
307 i2s_mst |= RK817_I2S_MODE_SLV;
308 break;
309 case SND_SOC_DAIFMT_CBM_CFM:
310 i2s_mst |= RK817_I2S_MODE_MST;
311 break;
312 default:
313 dev_err(component->dev, "%s : set master mask failed!\n", __func__);
314 return -EINVAL;
315 }
316
317 snd_soc_component_update_bits(component, RK817_CODEC_DI2S_CKM,
318 RK817_I2S_MODE_MASK, i2s_mst);
319
320 return 0;
321 }
322
323 static int rk817_hw_params(struct snd_pcm_substream *substream,
324 struct snd_pcm_hw_params *params,
325 struct snd_soc_dai *dai)
326 {
327 struct snd_soc_component *component = dai->component;
328
329 switch (params_format(params)) {
330 case SNDRV_PCM_FORMAT_S16_LE:
331 snd_soc_component_write(component, RK817_CODEC_DI2S_RXCR2,
332 VDW_RX_16BITS);
333 snd_soc_component_write(component, RK817_CODEC_DI2S_TXCR2,
334 VDW_TX_16BITS);
335 break;
336 case SNDRV_PCM_FORMAT_S24_LE:
337 case SNDRV_PCM_FORMAT_S32_LE:
338 snd_soc_component_write(component, RK817_CODEC_DI2S_RXCR2,
339 VDW_RX_24BITS);
340 snd_soc_component_write(component, RK817_CODEC_DI2S_TXCR2,
341 VDW_TX_24BITS);
342 break;
343 default:
344 return -EINVAL;
345 }
346
347 return 0;
348 }
349
350 static int rk817_digital_mute(struct snd_soc_dai *dai, int mute, int stream)
351 {
352 struct snd_soc_component *component = dai->component;
353
354 if (mute)
355 snd_soc_component_update_bits(component,
356 RK817_CODEC_DDAC_MUTE_MIXCTL,
357 DACMT_MASK, DACMT_ENABLE);
358 else
359 snd_soc_component_update_bits(component,
360 RK817_CODEC_DDAC_MUTE_MIXCTL,
361 DACMT_MASK, DACMT_DISABLE);
362
363 return 0;
364 }
365
366 #define RK817_PLAYBACK_RATES (SNDRV_PCM_RATE_8000 |\
367 SNDRV_PCM_RATE_16000 | \
368 SNDRV_PCM_RATE_32000 | \
369 SNDRV_PCM_RATE_44100 | \
370 SNDRV_PCM_RATE_48000 | \
371 SNDRV_PCM_RATE_96000)
372
373 #define RK817_CAPTURE_RATES (SNDRV_PCM_RATE_8000 |\
374 SNDRV_PCM_RATE_16000 | \
375 SNDRV_PCM_RATE_32000 | \
376 SNDRV_PCM_RATE_44100 | \
377 SNDRV_PCM_RATE_48000 | \
378 SNDRV_PCM_RATE_96000)
379
380 #define RK817_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
381 SNDRV_PCM_FMTBIT_S20_3LE |\
382 SNDRV_PCM_FMTBIT_S24_LE |\
383 SNDRV_PCM_FMTBIT_S32_LE)
384
385 static const struct snd_soc_dai_ops rk817_dai_ops = {
386 .hw_params = rk817_hw_params,
387 .set_fmt = rk817_set_dai_fmt,
388 .set_sysclk = rk817_set_dai_sysclk,
389 .mute_stream = rk817_digital_mute,
390 .no_capture_mute = 1,
391 };
392
393 static struct snd_soc_dai_driver rk817_dai[] = {
394 {
395 .name = "rk817-hifi",
396 .playback = {
397 .stream_name = "Playback",
398 .channels_min = 2,
399 .channels_max = 8,
400 .rates = RK817_PLAYBACK_RATES,
401 .formats = RK817_FORMATS,
402 },
403 .capture = {
404 .stream_name = "Capture",
405 .channels_min = 1,
406 .channels_max = 2,
407 .rates = RK817_CAPTURE_RATES,
408 .formats = RK817_FORMATS,
409 },
410 .ops = &rk817_dai_ops,
411 },
412 };
413
414 static int rk817_probe(struct snd_soc_component *component)
415 {
416 struct rk817_codec_priv *rk817 = snd_soc_component_get_drvdata(component);
417 struct rk808 *rk808 = dev_get_drvdata(component->dev->parent);
418
419 snd_soc_component_init_regmap(component, rk808->regmap);
420 rk817->component = component;
421
422 snd_soc_component_write(component, RK817_CODEC_DTOP_LPT_SRST, 0x40);
423
424 rk817_init(component);
425
426 /* setting initial pll values so that we can continue to leverage simple-audio-card.
427 * The values aren't important since no parameters are used.
428 */
429
430 snd_soc_component_set_pll(component, 0, 0, 0, 0);
431
432 return 0;
433 }
434
435 static void rk817_remove(struct snd_soc_component *component)
436 {
437 snd_soc_component_exit_regmap(component);
438 }
439
440 static const struct snd_soc_component_driver soc_codec_dev_rk817 = {
441 .probe = rk817_probe,
442 .remove = rk817_remove,
443 .idle_bias_on = 1,
444 .use_pmdown_time = 1,
445 .endianness = 1,
446 .controls = rk817_volume_controls,
447 .num_controls = ARRAY_SIZE(rk817_volume_controls),
448 .dapm_routes = rk817_dapm_routes,
449 .num_dapm_routes = ARRAY_SIZE(rk817_dapm_routes),
450 .dapm_widgets = rk817_dapm_widgets,
451 .num_dapm_widgets = ARRAY_SIZE(rk817_dapm_widgets),
452 .set_pll = rk817_set_component_pll,
453 };
454
455 static void rk817_codec_parse_dt_property(struct device *dev,
456 struct rk817_codec_priv *rk817)
457 {
458 struct device_node *node;
459
460 node = of_get_child_by_name(dev->parent->of_node, "codec");
461 if (!node) {
462 dev_dbg(dev, "%s() Can not get child: codec\n",
463 __func__);
464 }
465
466 rk817->mic_in_differential =
467 of_property_read_bool(node, "rockchip,mic-in-differential");
468
469 of_node_put(node);
470 }
471
472 static int rk817_platform_probe(struct platform_device *pdev)
473 {
474 struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent);
475 struct rk817_codec_priv *rk817_codec_data;
476 int ret;
477
478 rk817_codec_data = devm_kzalloc(&pdev->dev,
479 sizeof(struct rk817_codec_priv),
480 GFP_KERNEL);
481 if (!rk817_codec_data)
482 return -ENOMEM;
483
484 platform_set_drvdata(pdev, rk817_codec_data);
485
486 rk817_codec_data->rk808 = rk808;
487
488 rk817_codec_parse_dt_property(&pdev->dev, rk817_codec_data);
489
490 rk817_codec_data->mclk = devm_clk_get(pdev->dev.parent, "mclk");
491 if (IS_ERR(rk817_codec_data->mclk)) {
492 dev_dbg(&pdev->dev, "Unable to get mclk\n");
493 ret = -ENXIO;
494 goto err_;
495 }
496
497 ret = clk_prepare_enable(rk817_codec_data->mclk);
498 if (ret < 0) {
499 dev_err(&pdev->dev, "%s() clock prepare error %d\n",
500 __func__, ret);
501 goto err_;
502 }
503
504 ret = devm_snd_soc_register_component(&pdev->dev, &soc_codec_dev_rk817,
505 rk817_dai, ARRAY_SIZE(rk817_dai));
506 if (ret < 0) {
507 dev_err(&pdev->dev, "%s() register codec error %d\n",
508 __func__, ret);
509 goto err_clk;
510 }
511
512 return 0;
513
514 err_clk:
515 clk_disable_unprepare(rk817_codec_data->mclk);
516 err_:
517 return ret;
518 }
519
520 static void rk817_platform_remove(struct platform_device *pdev)
521 {
522 struct rk817_codec_priv *rk817 = platform_get_drvdata(pdev);
523
524 clk_disable_unprepare(rk817->mclk);
525 }
526
527 static struct platform_driver rk817_codec_driver = {
528 .driver = {
529 .name = "rk817-codec",
530 },
531 .probe = rk817_platform_probe,
532 .remove_new = rk817_platform_remove,
533 };
534
535 module_platform_driver(rk817_codec_driver);
536
537 MODULE_DESCRIPTION("ASoC RK817 codec driver");
538 MODULE_AUTHOR("binyuan <kevan.lan@rock-chips.com>");
539 MODULE_LICENSE("GPL v2");
540 MODULE_ALIAS("platform:rk817-codec");
541
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