xref: /linux/sound/soc/codecs/jz4770.c (revision a1ff5a7d78a036d6c2178ee5acd6ba4946243800)
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Ingenic JZ4770 CODEC driver
4 //
5 // Copyright (C) 2012, Maarten ter Huurne <maarten@treewalker.org>
6 // Copyright (C) 2019, Paul Cercueil <paul@crapouillou.net>
7 
8 #include <linux/clk.h>
9 #include <linux/delay.h>
10 #include <linux/iopoll.h>
11 #include <linux/module.h>
12 #include <linux/regmap.h>
13 #include <linux/time64.h>
14 
15 #include <sound/pcm_params.h>
16 #include <sound/soc.h>
17 #include <sound/soc-dai.h>
18 #include <sound/soc-dapm.h>
19 #include <sound/tlv.h>
20 
21 #define ICDC_RGADW_OFFSET		0x00
22 #define ICDC_RGDATA_OFFSET		0x04
23 
24 /* ICDC internal register access control register(RGADW) */
25 #define ICDC_RGADW_RGWR			BIT(16)
26 
27 #define ICDC_RGADW_RGADDR_OFFSET	8
28 #define	ICDC_RGADW_RGADDR_MASK		GENMASK(14, ICDC_RGADW_RGADDR_OFFSET)
29 
30 #define ICDC_RGADW_RGDIN_OFFSET		0
31 #define	ICDC_RGADW_RGDIN_MASK		GENMASK(7, ICDC_RGADW_RGDIN_OFFSET)
32 
33 /* ICDC internal register data output register (RGDATA)*/
34 #define ICDC_RGDATA_IRQ			BIT(8)
35 
36 #define ICDC_RGDATA_RGDOUT_OFFSET	0
37 #define ICDC_RGDATA_RGDOUT_MASK		GENMASK(7, ICDC_RGDATA_RGDOUT_OFFSET)
38 
39 /* Internal register space, accessed through regmap */
40 enum {
41 	JZ4770_CODEC_REG_SR,
42 	JZ4770_CODEC_REG_AICR_DAC,
43 	JZ4770_CODEC_REG_AICR_ADC,
44 	JZ4770_CODEC_REG_CR_LO,
45 	JZ4770_CODEC_REG_CR_HP,
46 
47 	JZ4770_CODEC_REG_MISSING_REG1,
48 
49 	JZ4770_CODEC_REG_CR_DAC,
50 	JZ4770_CODEC_REG_CR_MIC,
51 	JZ4770_CODEC_REG_CR_LI,
52 	JZ4770_CODEC_REG_CR_ADC,
53 	JZ4770_CODEC_REG_CR_MIX,
54 	JZ4770_CODEC_REG_CR_VIC,
55 	JZ4770_CODEC_REG_CCR,
56 	JZ4770_CODEC_REG_FCR_DAC,
57 	JZ4770_CODEC_REG_FCR_ADC,
58 	JZ4770_CODEC_REG_ICR,
59 	JZ4770_CODEC_REG_IMR,
60 	JZ4770_CODEC_REG_IFR,
61 	JZ4770_CODEC_REG_GCR_HPL,
62 	JZ4770_CODEC_REG_GCR_HPR,
63 	JZ4770_CODEC_REG_GCR_LIBYL,
64 	JZ4770_CODEC_REG_GCR_LIBYR,
65 	JZ4770_CODEC_REG_GCR_DACL,
66 	JZ4770_CODEC_REG_GCR_DACR,
67 	JZ4770_CODEC_REG_GCR_MIC1,
68 	JZ4770_CODEC_REG_GCR_MIC2,
69 	JZ4770_CODEC_REG_GCR_ADCL,
70 	JZ4770_CODEC_REG_GCR_ADCR,
71 
72 	JZ4770_CODEC_REG_MISSING_REG2,
73 
74 	JZ4770_CODEC_REG_GCR_MIXADC,
75 	JZ4770_CODEC_REG_GCR_MIXDAC,
76 	JZ4770_CODEC_REG_AGC1,
77 	JZ4770_CODEC_REG_AGC2,
78 	JZ4770_CODEC_REG_AGC3,
79 	JZ4770_CODEC_REG_AGC4,
80 	JZ4770_CODEC_REG_AGC5,
81 };
82 
83 #define REG_AICR_DAC_ADWL_OFFSET	6
84 #define REG_AICR_DAC_ADWL_MASK		(0x3 << REG_AICR_DAC_ADWL_OFFSET)
85 #define REG_AICR_DAC_SERIAL		BIT(1)
86 #define REG_AICR_DAC_I2S		BIT(0)
87 
88 #define REG_AICR_ADC_ADWL_OFFSET	6
89 #define REG_AICR_ADC_ADWL_MASK		(0x3 << REG_AICR_ADC_ADWL_OFFSET)
90 #define REG_AICR_ADC_SERIAL		BIT(1)
91 #define REG_AICR_ADC_I2S		BIT(0)
92 
93 #define REG_CR_LO_MUTE_OFFSET		7
94 #define REG_CR_LO_SB_OFFSET		4
95 #define REG_CR_LO_SEL_OFFSET		0
96 #define REG_CR_LO_SEL_MASK		(0x3 << REG_CR_LO_SEL_OFFSET)
97 
98 #define REG_CR_HP_MUTE			BIT(7)
99 #define REG_CR_HP_LOAD			BIT(6)
100 #define REG_CR_HP_SB_OFFSET		4
101 #define REG_CR_HP_SB_HPCM_OFFSET	3
102 #define REG_CR_HP_SEL_OFFSET		0
103 #define REG_CR_HP_SEL_MASK		(0x3 << REG_CR_HP_SEL_OFFSET)
104 
105 #define REG_CR_DAC_MUTE			BIT(7)
106 #define REG_CR_DAC_MONO			BIT(6)
107 #define REG_CR_DAC_LEFT_ONLY		BIT(5)
108 #define REG_CR_DAC_SB_OFFSET		4
109 #define REG_CR_DAC_LRSWAP		BIT(3)
110 
111 #define REG_CR_MIC_STEREO_OFFSET	7
112 #define REG_CR_MIC_IDIFF_OFFSET		6
113 #define REG_CR_MIC_SB_MIC2_OFFSET	5
114 #define REG_CR_MIC_SB_MIC1_OFFSET	4
115 #define REG_CR_MIC_BIAS_V0_OFFSET	1
116 #define REG_CR_MIC_BIAS_SB_OFFSET	0
117 
118 #define REG_CR_LI_LIBY_OFFSET		4
119 #define REG_CR_LI_SB_OFFSET		0
120 
121 #define REG_CR_ADC_DMIC_SEL		BIT(7)
122 #define REG_CR_ADC_MONO			BIT(6)
123 #define REG_CR_ADC_LEFT_ONLY		BIT(5)
124 #define REG_CR_ADC_SB_OFFSET		4
125 #define REG_CR_ADC_LRSWAP		BIT(3)
126 #define REG_CR_ADC_IN_SEL_OFFSET	0
127 #define REG_CR_ADC_IN_SEL_MASK		(0x3 << REG_CR_ADC_IN_SEL_OFFSET)
128 
129 #define REG_CR_VIC_SB_SLEEP		BIT(1)
130 #define REG_CR_VIC_SB			BIT(0)
131 
132 #define REG_CCR_CRYSTAL_OFFSET		0
133 #define REG_CCR_CRYSTAL_MASK		(0xf << REG_CCR_CRYSTAL_OFFSET)
134 
135 #define REG_FCR_DAC_FREQ_OFFSET		0
136 #define REG_FCR_DAC_FREQ_MASK		(0xf << REG_FCR_DAC_FREQ_OFFSET)
137 
138 #define REG_FCR_ADC_FREQ_OFFSET		0
139 #define REG_FCR_ADC_FREQ_MASK		(0xf << REG_FCR_ADC_FREQ_OFFSET)
140 
141 #define REG_ICR_INT_FORM_OFFSET		6
142 #define REG_ICR_INT_FORM_MASK		(0x3 << REG_ICR_INT_FORM_OFFSET)
143 
144 #define REG_IMR_ALL_MASK		(0x7f)
145 #define REG_IMR_SCLR_MASK		BIT(6)
146 #define REG_IMR_JACK_MASK		BIT(5)
147 #define REG_IMR_SCMC_MASK		BIT(4)
148 #define REG_IMR_RUP_MASK		BIT(3)
149 #define REG_IMR_RDO_MASK		BIT(2)
150 #define REG_IMR_GUP_MASK		BIT(1)
151 #define REG_IMR_GDO_MASK		BIT(0)
152 
153 #define REG_IFR_ALL_MASK		(0x7f)
154 #define REG_IFR_SCLR			BIT(6)
155 #define REG_IFR_JACK			BIT(5)
156 #define REG_IFR_SCMC			BIT(4)
157 #define REG_IFR_RUP			BIT(3)
158 #define REG_IFR_RDO			BIT(2)
159 #define REG_IFR_GUP			BIT(1)
160 #define REG_IFR_GDO			BIT(0)
161 
162 #define REG_GCR_HPL_LRGO		BIT(7)
163 
164 #define REG_GCR_DACL_RLGOD		BIT(7)
165 
166 #define REG_GCR_GAIN_OFFSET		0
167 #define REG_GCR_GAIN_MAX		0x1f
168 
169 #define REG_GCR_MIC_GAIN_OFFSET		0
170 #define REG_GCR_MIC_GAIN_MAX		5
171 
172 #define REG_GCR_ADC_GAIN_OFFSET		0
173 #define REG_GCR_ADC_GAIN_MAX		23
174 
175 #define REG_AGC1_EN			BIT(7)
176 
177 /* codec private data */
178 struct jz_codec {
179 	struct device *dev;
180 	struct regmap *regmap;
181 	void __iomem *base;
182 	struct clk *clk;
183 };
184 
jz4770_codec_set_bias_level(struct snd_soc_component * codec,enum snd_soc_bias_level level)185 static int jz4770_codec_set_bias_level(struct snd_soc_component *codec,
186 				       enum snd_soc_bias_level level)
187 {
188 	struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
189 	struct regmap *regmap = jz_codec->regmap;
190 
191 	switch (level) {
192 	case SND_SOC_BIAS_PREPARE:
193 		/* Reset all interrupt flags. */
194 		regmap_write(regmap, JZ4770_CODEC_REG_IFR, REG_IFR_ALL_MASK);
195 
196 		regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_VIC,
197 				  REG_CR_VIC_SB);
198 		msleep(250);
199 		regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_VIC,
200 				  REG_CR_VIC_SB_SLEEP);
201 		msleep(400);
202 		break;
203 	case SND_SOC_BIAS_STANDBY:
204 		regmap_set_bits(regmap, JZ4770_CODEC_REG_CR_VIC,
205 				REG_CR_VIC_SB_SLEEP);
206 		regmap_set_bits(regmap, JZ4770_CODEC_REG_CR_VIC,
207 				REG_CR_VIC_SB);
208 		fallthrough;
209 	default:
210 		break;
211 	}
212 
213 	return 0;
214 }
215 
jz4770_codec_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)216 static int jz4770_codec_startup(struct snd_pcm_substream *substream,
217 				struct snd_soc_dai *dai)
218 {
219 	struct snd_soc_component *codec = dai->component;
220 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(codec);
221 
222 	/*
223 	 * SYSCLK output from the codec to the AIC is required to keep the
224 	 * DMA transfer going during playback when all audible outputs have
225 	 * been disabled.
226 	 */
227 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
228 		snd_soc_dapm_force_enable_pin(dapm, "SYSCLK");
229 
230 	return 0;
231 }
232 
jz4770_codec_shutdown(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)233 static void jz4770_codec_shutdown(struct snd_pcm_substream *substream,
234 				  struct snd_soc_dai *dai)
235 {
236 	struct snd_soc_component *codec = dai->component;
237 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(codec);
238 
239 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
240 		snd_soc_dapm_disable_pin(dapm, "SYSCLK");
241 }
242 
243 
jz4770_codec_pcm_trigger(struct snd_pcm_substream * substream,int cmd,struct snd_soc_dai * dai)244 static int jz4770_codec_pcm_trigger(struct snd_pcm_substream *substream,
245 				    int cmd, struct snd_soc_dai *dai)
246 {
247 	struct snd_soc_component *codec = dai->component;
248 	int ret = 0;
249 
250 	switch (cmd) {
251 	case SNDRV_PCM_TRIGGER_START:
252 	case SNDRV_PCM_TRIGGER_RESUME:
253 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
254 		if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
255 			snd_soc_component_force_bias_level(codec,
256 							   SND_SOC_BIAS_ON);
257 		break;
258 	case SNDRV_PCM_TRIGGER_STOP:
259 	case SNDRV_PCM_TRIGGER_SUSPEND:
260 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
261 		/* do nothing */
262 		break;
263 	default:
264 		ret = -EINVAL;
265 	}
266 
267 	return ret;
268 }
269 
jz4770_codec_mute_stream(struct snd_soc_dai * dai,int mute,int direction)270 static int jz4770_codec_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
271 {
272 	struct snd_soc_component *codec = dai->component;
273 	struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
274 	unsigned int gain_bit = mute ? REG_IFR_GDO : REG_IFR_GUP;
275 	unsigned int val;
276 	int change, err;
277 
278 	change = snd_soc_component_update_bits(codec, JZ4770_CODEC_REG_CR_DAC,
279 					       REG_CR_DAC_MUTE,
280 					       mute ? REG_CR_DAC_MUTE : 0);
281 	if (change == 1) {
282 		regmap_read(jz_codec->regmap, JZ4770_CODEC_REG_CR_DAC, &val);
283 
284 		if (val & BIT(REG_CR_DAC_SB_OFFSET))
285 			return 1;
286 
287 		err = regmap_read_poll_timeout(jz_codec->regmap,
288 					       JZ4770_CODEC_REG_IFR,
289 					       val, val & gain_bit,
290 					       1000, 1 * USEC_PER_SEC);
291 		if (err) {
292 			dev_err(jz_codec->dev,
293 				"Timeout while setting digital mute: %d", err);
294 			return err;
295 		}
296 
297 		/* clear GUP/GDO flag */
298 		regmap_set_bits(jz_codec->regmap, JZ4770_CODEC_REG_IFR,
299 				gain_bit);
300 	}
301 
302 	return 0;
303 }
304 
305 /* unit: 0.01dB */
306 static const DECLARE_TLV_DB_MINMAX_MUTE(dac_tlv, -3100, 0);
307 static const DECLARE_TLV_DB_SCALE(adc_tlv, 0, 100, 0);
308 static const DECLARE_TLV_DB_MINMAX(out_tlv, -2500, 600);
309 static const DECLARE_TLV_DB_SCALE(linein_tlv, -2500, 100, 0);
310 static const DECLARE_TLV_DB_MINMAX(mixer_tlv, -3100, 0);
311 
312 /* Unconditional controls. */
313 static const struct snd_kcontrol_new jz4770_codec_snd_controls[] = {
314 	/* record gain control */
315 	SOC_DOUBLE_R_TLV("PCM Capture Volume",
316 			 JZ4770_CODEC_REG_GCR_ADCL, JZ4770_CODEC_REG_GCR_ADCR,
317 			 REG_GCR_ADC_GAIN_OFFSET, REG_GCR_ADC_GAIN_MAX,
318 			 0, adc_tlv),
319 
320 	SOC_DOUBLE_R_TLV("Line In Bypass Playback Volume",
321 			 JZ4770_CODEC_REG_GCR_LIBYL, JZ4770_CODEC_REG_GCR_LIBYR,
322 			 REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, linein_tlv),
323 
324 	SOC_SINGLE_TLV("Mixer Capture Volume",
325 		       JZ4770_CODEC_REG_GCR_MIXADC,
326 		       REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, mixer_tlv),
327 
328 	SOC_SINGLE_TLV("Mixer Playback Volume",
329 		       JZ4770_CODEC_REG_GCR_MIXDAC,
330 		       REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, mixer_tlv),
331 };
332 
333 static const struct snd_kcontrol_new jz4770_codec_pcm_playback_controls[] = {
334 	{
335 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
336 		.name = "Volume",
337 		.info = snd_soc_info_volsw,
338 		.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
339 			| SNDRV_CTL_ELEM_ACCESS_READWRITE,
340 		.tlv.p = dac_tlv,
341 		.get = snd_soc_dapm_get_volsw,
342 		.put = snd_soc_dapm_put_volsw,
343 		/*
344 		 * NOTE: DACR/DACL are inversed; the gain value written to DACR
345 		 * seems to affect the left channel, and the gain value written
346 		 * to DACL seems to affect the right channel.
347 		 */
348 		.private_value = SOC_DOUBLE_R_VALUE(JZ4770_CODEC_REG_GCR_DACR,
349 						    JZ4770_CODEC_REG_GCR_DACL,
350 						    REG_GCR_GAIN_OFFSET,
351 						    REG_GCR_GAIN_MAX, 1),
352 	},
353 };
354 
355 static const struct snd_kcontrol_new jz4770_codec_hp_playback_controls[] = {
356 	{
357 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
358 		.name = "Volume",
359 		.info = snd_soc_info_volsw,
360 		.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ
361 			| SNDRV_CTL_ELEM_ACCESS_READWRITE,
362 		.tlv.p = out_tlv,
363 		.get = snd_soc_dapm_get_volsw,
364 		.put = snd_soc_dapm_put_volsw,
365 		/* HPR/HPL inversed for the same reason as above */
366 		.private_value = SOC_DOUBLE_R_VALUE(JZ4770_CODEC_REG_GCR_HPR,
367 						    JZ4770_CODEC_REG_GCR_HPL,
368 						    REG_GCR_GAIN_OFFSET,
369 						    REG_GCR_GAIN_MAX, 1),
370 	},
371 };
372 
hpout_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)373 static int hpout_event(struct snd_soc_dapm_widget *w,
374 		       struct snd_kcontrol *kcontrol, int event)
375 {
376 	struct snd_soc_component *codec = snd_soc_dapm_to_component(w->dapm);
377 	struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
378 	unsigned int val;
379 	int err;
380 
381 	switch (event) {
382 	case SND_SOC_DAPM_PRE_PMU:
383 		/* unmute HP */
384 		regmap_clear_bits(jz_codec->regmap, JZ4770_CODEC_REG_CR_HP,
385 				  REG_CR_HP_MUTE);
386 		break;
387 
388 	case SND_SOC_DAPM_POST_PMU:
389 		/* wait for ramp-up complete (RUP) */
390 		err = regmap_read_poll_timeout(jz_codec->regmap,
391 					       JZ4770_CODEC_REG_IFR,
392 					       val, val & REG_IFR_RUP,
393 					       1000, 1 * USEC_PER_SEC);
394 		if (err) {
395 			dev_err(jz_codec->dev, "RUP timeout: %d", err);
396 			return err;
397 		}
398 
399 		/* clear RUP flag */
400 		regmap_set_bits(jz_codec->regmap, JZ4770_CODEC_REG_IFR,
401 				REG_IFR_RUP);
402 
403 		break;
404 
405 	case SND_SOC_DAPM_POST_PMD:
406 		/* mute HP */
407 		regmap_set_bits(jz_codec->regmap, JZ4770_CODEC_REG_CR_HP,
408 				REG_CR_HP_MUTE);
409 
410 		err = regmap_read_poll_timeout(jz_codec->regmap,
411 					       JZ4770_CODEC_REG_IFR,
412 					       val, val & REG_IFR_RDO,
413 					       1000, 1 * USEC_PER_SEC);
414 		if (err) {
415 			dev_err(jz_codec->dev, "RDO timeout: %d", err);
416 			return err;
417 		}
418 
419 		/* clear RDO flag */
420 		regmap_set_bits(jz_codec->regmap, JZ4770_CODEC_REG_IFR,
421 				REG_IFR_RDO);
422 
423 		break;
424 	}
425 
426 	return 0;
427 }
428 
adc_poweron_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)429 static int adc_poweron_event(struct snd_soc_dapm_widget *w,
430 			     struct snd_kcontrol *kcontrol, int event)
431 {
432 	if (event == SND_SOC_DAPM_POST_PMU)
433 		msleep(1000);
434 
435 	return 0;
436 }
437 
438 static const char * const jz4770_codec_hp_texts[] = {
439 	"PCM", "Line In", "Mic 1", "Mic 2"
440 };
441 static const unsigned int jz4770_codec_hp_values[] = { 3, 2, 0, 1 };
442 static SOC_VALUE_ENUM_SINGLE_DECL(jz4770_codec_hp_enum,
443 				  JZ4770_CODEC_REG_CR_HP,
444 				  REG_CR_HP_SEL_OFFSET,
445 				  REG_CR_HP_SEL_MASK,
446 				  jz4770_codec_hp_texts,
447 				  jz4770_codec_hp_values);
448 static const struct snd_kcontrol_new jz4770_codec_hp_source =
449 			SOC_DAPM_ENUM("Route", jz4770_codec_hp_enum);
450 
451 static SOC_VALUE_ENUM_SINGLE_DECL(jz4770_codec_lo_enum,
452 				  JZ4770_CODEC_REG_CR_LO,
453 				  REG_CR_LO_SEL_OFFSET,
454 				  REG_CR_LO_SEL_MASK,
455 				  jz4770_codec_hp_texts,
456 				  jz4770_codec_hp_values);
457 static const struct snd_kcontrol_new jz4770_codec_lo_source =
458 			SOC_DAPM_ENUM("Route", jz4770_codec_lo_enum);
459 
460 static const char * const jz4770_codec_cap_texts[] = {
461 	"Line In", "Mic 1", "Mic 2"
462 };
463 static const unsigned int jz4770_codec_cap_values[] = { 2, 0, 1 };
464 static SOC_VALUE_ENUM_SINGLE_DECL(jz4770_codec_cap_enum,
465 				  JZ4770_CODEC_REG_CR_ADC,
466 				  REG_CR_ADC_IN_SEL_OFFSET,
467 				  REG_CR_ADC_IN_SEL_MASK,
468 				  jz4770_codec_cap_texts,
469 				  jz4770_codec_cap_values);
470 static const struct snd_kcontrol_new jz4770_codec_cap_source =
471 			SOC_DAPM_ENUM("Route", jz4770_codec_cap_enum);
472 
473 static const struct snd_kcontrol_new jz4770_codec_mic_controls[] = {
474 	SOC_DAPM_SINGLE("Stereo Capture Switch", JZ4770_CODEC_REG_CR_MIC,
475 			REG_CR_MIC_STEREO_OFFSET, 1, 0),
476 };
477 
478 static const struct snd_soc_dapm_widget jz4770_codec_dapm_widgets[] = {
479 	SND_SOC_DAPM_PGA_E("HP Out", JZ4770_CODEC_REG_CR_HP,
480 			   REG_CR_HP_SB_OFFSET, 1, NULL, 0, hpout_event,
481 			   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
482 			   SND_SOC_DAPM_POST_PMD),
483 
484 	SND_SOC_DAPM_PGA("Line Out", JZ4770_CODEC_REG_CR_LO,
485 			 REG_CR_LO_SB_OFFSET, 1, NULL, 0),
486 
487 	SND_SOC_DAPM_PGA("Line Out Switch 2", JZ4770_CODEC_REG_CR_LO,
488 			 REG_CR_LO_MUTE_OFFSET, 1, NULL, 0),
489 
490 	SND_SOC_DAPM_PGA("Line In", JZ4770_CODEC_REG_CR_LI,
491 			 REG_CR_LI_SB_OFFSET, 1, NULL, 0),
492 
493 	SND_SOC_DAPM_MUX("Headphones Source", SND_SOC_NOPM, 0, 0,
494 			 &jz4770_codec_hp_source),
495 	SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
496 			 &jz4770_codec_cap_source),
497 	SND_SOC_DAPM_MUX("Line Out Source", SND_SOC_NOPM, 0, 0,
498 			 &jz4770_codec_lo_source),
499 
500 	SND_SOC_DAPM_PGA("Mic 1", JZ4770_CODEC_REG_CR_MIC,
501 			 REG_CR_MIC_SB_MIC1_OFFSET, 1, NULL, 0),
502 	SND_SOC_DAPM_PGA("Mic 2", JZ4770_CODEC_REG_CR_MIC,
503 			 REG_CR_MIC_SB_MIC2_OFFSET, 1, NULL, 0),
504 
505 	SND_SOC_DAPM_PGA("Mic Diff", JZ4770_CODEC_REG_CR_MIC,
506 			 REG_CR_MIC_IDIFF_OFFSET, 0, NULL, 0),
507 
508 	SND_SOC_DAPM_MIXER("Mic", SND_SOC_NOPM, 0, 0,
509 			   jz4770_codec_mic_controls,
510 			   ARRAY_SIZE(jz4770_codec_mic_controls)),
511 
512 	SND_SOC_DAPM_PGA("Line In Bypass", JZ4770_CODEC_REG_CR_LI,
513 			 REG_CR_LI_LIBY_OFFSET, 1, NULL, 0),
514 
515 	SND_SOC_DAPM_ADC_E("ADC", "HiFi Capture", JZ4770_CODEC_REG_CR_ADC,
516 			   REG_CR_ADC_SB_OFFSET, 1, adc_poweron_event,
517 			   SND_SOC_DAPM_POST_PMU),
518 	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", JZ4770_CODEC_REG_CR_DAC,
519 			 REG_CR_DAC_SB_OFFSET, 1),
520 
521 	SND_SOC_DAPM_MIXER("PCM Playback", SND_SOC_NOPM, 0, 0,
522 			   jz4770_codec_pcm_playback_controls,
523 			   ARRAY_SIZE(jz4770_codec_pcm_playback_controls)),
524 	SND_SOC_DAPM_MIXER("Headphones Playback", SND_SOC_NOPM, 0, 0,
525 			   jz4770_codec_hp_playback_controls,
526 			   ARRAY_SIZE(jz4770_codec_hp_playback_controls)),
527 
528 	SND_SOC_DAPM_SUPPLY("MICBIAS", JZ4770_CODEC_REG_CR_MIC,
529 			    REG_CR_MIC_BIAS_SB_OFFSET, 1, NULL, 0),
530 
531 	SND_SOC_DAPM_SUPPLY("Cap-less", JZ4770_CODEC_REG_CR_HP,
532 			    REG_CR_HP_SB_HPCM_OFFSET, 1, NULL, 0),
533 
534 	SND_SOC_DAPM_INPUT("MIC1P"),
535 	SND_SOC_DAPM_INPUT("MIC1N"),
536 	SND_SOC_DAPM_INPUT("MIC2P"),
537 	SND_SOC_DAPM_INPUT("MIC2N"),
538 
539 	SND_SOC_DAPM_OUTPUT("LOUT"),
540 	SND_SOC_DAPM_OUTPUT("ROUT"),
541 
542 	SND_SOC_DAPM_OUTPUT("LHPOUT"),
543 	SND_SOC_DAPM_OUTPUT("RHPOUT"),
544 
545 	SND_SOC_DAPM_INPUT("LLINEIN"),
546 	SND_SOC_DAPM_INPUT("RLINEIN"),
547 
548 	SND_SOC_DAPM_OUTPUT("SYSCLK"),
549 };
550 
551 /* Unconditional routes. */
552 static const struct snd_soc_dapm_route jz4770_codec_dapm_routes[] = {
553 	{ "Mic 1", NULL, "MIC1P" },
554 	{ "Mic Diff", NULL, "MIC1N" },
555 	{ "Mic 1", NULL, "Mic Diff" },
556 	{ "Mic 2", NULL, "MIC2P" },
557 	{ "Mic Diff", NULL, "MIC2N" },
558 	{ "Mic 2", NULL, "Mic Diff" },
559 
560 	{ "Line In", NULL, "LLINEIN" },
561 	{ "Line In", NULL, "RLINEIN" },
562 
563 	{ "Mic", "Stereo Capture Switch", "Mic 1" },
564 	{ "Mic", "Stereo Capture Switch", "Mic 2" },
565 	{ "Headphones Source", "Mic 1", "Mic" },
566 	{ "Headphones Source", "Mic 2", "Mic" },
567 	{ "Capture Source", "Mic 1", "Mic" },
568 	{ "Capture Source", "Mic 2", "Mic" },
569 
570 	{ "Headphones Source", "Mic 1", "Mic 1" },
571 	{ "Headphones Source", "Mic 2", "Mic 2" },
572 	{ "Headphones Source", "Line In", "Line In Bypass" },
573 	{ "Headphones Source", "PCM", "Headphones Playback" },
574 	{ "HP Out", NULL, "Headphones Source" },
575 
576 	{ "Capture Source", "Line In", "Line In" },
577 	{ "Capture Source", "Mic 1", "Mic 1" },
578 	{ "Capture Source", "Mic 2", "Mic 2" },
579 	{ "ADC", NULL, "Capture Source" },
580 
581 	{ "Line In Bypass", NULL, "Line In" },
582 	{ "Line Out Source", "Line In", "Line In Bypass" },
583 	{ "Line Out Source", "PCM", "PCM Playback" },
584 
585 	{ "LHPOUT", NULL, "HP Out"},
586 	{ "RHPOUT", NULL, "HP Out"},
587 
588 	{ "Line Out", NULL, "Line Out Source" },
589 	{ "Line Out Switch 2", NULL, "Line Out" },
590 
591 	{ "LOUT", NULL, "Line Out Switch 2"},
592 	{ "ROUT", NULL, "Line Out Switch 2"},
593 
594 	{ "PCM Playback", "Volume", "DAC" },
595 	{ "Headphones Playback", "Volume", "PCM Playback" },
596 
597 	{ "SYSCLK", NULL, "DAC" },
598 };
599 
jz4770_codec_codec_init_regs(struct snd_soc_component * codec)600 static void jz4770_codec_codec_init_regs(struct snd_soc_component *codec)
601 {
602 	struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
603 	struct regmap *regmap = jz_codec->regmap;
604 
605 	/* Collect updates for later sending. */
606 	regcache_cache_only(regmap, true);
607 
608 	/* default HP output to PCM */
609 	regmap_set_bits(regmap, JZ4770_CODEC_REG_CR_HP, REG_CR_HP_SEL_MASK);
610 
611 	/* default line output to PCM */
612 	regmap_set_bits(regmap, JZ4770_CODEC_REG_CR_LO, REG_CR_LO_SEL_MASK);
613 
614 	/* Disable stereo mic */
615 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_MIC,
616 			  BIT(REG_CR_MIC_STEREO_OFFSET));
617 
618 	/* Set mic 1 as default source for ADC */
619 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_ADC,
620 			  REG_CR_ADC_IN_SEL_MASK);
621 
622 	/* ADC/DAC: serial + i2s */
623 	regmap_set_bits(regmap, JZ4770_CODEC_REG_AICR_ADC,
624 			REG_AICR_ADC_SERIAL | REG_AICR_ADC_I2S);
625 	regmap_set_bits(regmap, JZ4770_CODEC_REG_AICR_DAC,
626 			REG_AICR_DAC_SERIAL | REG_AICR_DAC_I2S);
627 
628 	/* The generated IRQ is a high level */
629 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_ICR, REG_ICR_INT_FORM_MASK);
630 	regmap_update_bits(regmap, JZ4770_CODEC_REG_IMR, REG_IMR_ALL_MASK,
631 			   REG_IMR_JACK_MASK | REG_IMR_RUP_MASK |
632 			   REG_IMR_RDO_MASK | REG_IMR_GUP_MASK |
633 			   REG_IMR_GDO_MASK);
634 
635 	/* 12M oscillator */
636 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_CCR, REG_CCR_CRYSTAL_MASK);
637 
638 	/* 0: 16ohm/220uF, 1: 10kohm/1uF */
639 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_HP, REG_CR_HP_LOAD);
640 
641 	/* disable automatic gain */
642 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_AGC1, REG_AGC1_EN);
643 
644 	/* Disable DAC lrswap */
645 	regmap_set_bits(regmap, JZ4770_CODEC_REG_CR_DAC, REG_CR_DAC_LRSWAP);
646 
647 	/* Independent L/R DAC gain control */
648 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_GCR_DACL,
649 			  REG_GCR_DACL_RLGOD);
650 
651 	/* Disable ADC lrswap */
652 	regmap_set_bits(regmap, JZ4770_CODEC_REG_CR_ADC, REG_CR_ADC_LRSWAP);
653 
654 	/* default to cap-less mode(0) */
655 	regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_HP,
656 			  BIT(REG_CR_HP_SB_HPCM_OFFSET));
657 
658 	/* Send collected updates. */
659 	regcache_cache_only(regmap, false);
660 	regcache_sync(regmap);
661 }
662 
jz4770_codec_codec_probe(struct snd_soc_component * codec)663 static int jz4770_codec_codec_probe(struct snd_soc_component *codec)
664 {
665 	struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
666 
667 	clk_prepare_enable(jz_codec->clk);
668 
669 	jz4770_codec_codec_init_regs(codec);
670 
671 	return 0;
672 }
673 
jz4770_codec_codec_remove(struct snd_soc_component * codec)674 static void jz4770_codec_codec_remove(struct snd_soc_component *codec)
675 {
676 	struct jz_codec *jz_codec = snd_soc_component_get_drvdata(codec);
677 
678 	clk_disable_unprepare(jz_codec->clk);
679 }
680 
681 static const struct snd_soc_component_driver jz4770_codec_soc_codec_dev = {
682 	.probe			= jz4770_codec_codec_probe,
683 	.remove			= jz4770_codec_codec_remove,
684 	.set_bias_level		= jz4770_codec_set_bias_level,
685 	.controls		= jz4770_codec_snd_controls,
686 	.num_controls		= ARRAY_SIZE(jz4770_codec_snd_controls),
687 	.dapm_widgets		= jz4770_codec_dapm_widgets,
688 	.num_dapm_widgets	= ARRAY_SIZE(jz4770_codec_dapm_widgets),
689 	.dapm_routes		= jz4770_codec_dapm_routes,
690 	.num_dapm_routes	= ARRAY_SIZE(jz4770_codec_dapm_routes),
691 	.suspend_bias_off	= 1,
692 	.use_pmdown_time	= 1,
693 };
694 
695 static const unsigned int jz4770_codec_sample_rates[] = {
696 	96000, 48000, 44100, 32000,
697 	24000, 22050, 16000, 12000,
698 	11025, 9600, 8000,
699 };
700 
jz4770_codec_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)701 static int jz4770_codec_hw_params(struct snd_pcm_substream *substream,
702 				  struct snd_pcm_hw_params *params,
703 				  struct snd_soc_dai *dai)
704 {
705 	struct jz_codec *codec = snd_soc_component_get_drvdata(dai->component);
706 	unsigned int rate, bit_width;
707 
708 	switch (params_format(params)) {
709 	case SNDRV_PCM_FORMAT_S16_LE:
710 		bit_width = 0;
711 		break;
712 	case SNDRV_PCM_FORMAT_S18_3LE:
713 		bit_width = 1;
714 		break;
715 	case SNDRV_PCM_FORMAT_S20_3LE:
716 		bit_width = 2;
717 		break;
718 	case SNDRV_PCM_FORMAT_S24_3LE:
719 		bit_width = 3;
720 		break;
721 	default:
722 		return -EINVAL;
723 	}
724 
725 	for (rate = 0; rate < ARRAY_SIZE(jz4770_codec_sample_rates); rate++) {
726 		if (jz4770_codec_sample_rates[rate] == params_rate(params))
727 			break;
728 	}
729 
730 	if (rate == ARRAY_SIZE(jz4770_codec_sample_rates))
731 		return -EINVAL;
732 
733 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
734 		regmap_update_bits(codec->regmap, JZ4770_CODEC_REG_AICR_DAC,
735 				   REG_AICR_DAC_ADWL_MASK,
736 				   bit_width << REG_AICR_DAC_ADWL_OFFSET);
737 		regmap_update_bits(codec->regmap, JZ4770_CODEC_REG_FCR_DAC,
738 				   REG_FCR_DAC_FREQ_MASK,
739 				   rate << REG_FCR_DAC_FREQ_OFFSET);
740 	} else {
741 		regmap_update_bits(codec->regmap, JZ4770_CODEC_REG_AICR_ADC,
742 				   REG_AICR_ADC_ADWL_MASK,
743 				   bit_width << REG_AICR_ADC_ADWL_OFFSET);
744 		regmap_update_bits(codec->regmap, JZ4770_CODEC_REG_FCR_ADC,
745 				   REG_FCR_ADC_FREQ_MASK,
746 				   rate << REG_FCR_ADC_FREQ_OFFSET);
747 	}
748 
749 	return 0;
750 }
751 
752 static const struct snd_soc_dai_ops jz4770_codec_dai_ops = {
753 	.startup	= jz4770_codec_startup,
754 	.shutdown	= jz4770_codec_shutdown,
755 	.hw_params	= jz4770_codec_hw_params,
756 	.trigger	= jz4770_codec_pcm_trigger,
757 	.mute_stream	= jz4770_codec_mute_stream,
758 	.no_capture_mute = 1,
759 };
760 
761 #define JZ_CODEC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE  | \
762 			  SNDRV_PCM_FMTBIT_S18_3LE | \
763 			  SNDRV_PCM_FMTBIT_S20_3LE | \
764 			  SNDRV_PCM_FMTBIT_S24_3LE)
765 
766 static struct snd_soc_dai_driver jz4770_codec_dai = {
767 	.name = "jz4770-hifi",
768 	.playback = {
769 		.stream_name = "Playback",
770 		.channels_min = 2,
771 		.channels_max = 2,
772 		.rates = SNDRV_PCM_RATE_8000_96000,
773 		.formats = JZ_CODEC_FORMATS,
774 	},
775 	.capture = {
776 		.stream_name = "Capture",
777 		.channels_min = 2,
778 		.channels_max = 2,
779 		.rates = SNDRV_PCM_RATE_8000_96000,
780 		.formats = JZ_CODEC_FORMATS,
781 	},
782 	.ops = &jz4770_codec_dai_ops,
783 };
784 
jz4770_codec_volatile(struct device * dev,unsigned int reg)785 static bool jz4770_codec_volatile(struct device *dev, unsigned int reg)
786 {
787 	return reg == JZ4770_CODEC_REG_SR || reg == JZ4770_CODEC_REG_IFR;
788 }
789 
jz4770_codec_readable(struct device * dev,unsigned int reg)790 static bool jz4770_codec_readable(struct device *dev, unsigned int reg)
791 {
792 	switch (reg) {
793 	case JZ4770_CODEC_REG_MISSING_REG1:
794 	case JZ4770_CODEC_REG_MISSING_REG2:
795 		return false;
796 	default:
797 		return true;
798 	}
799 }
800 
jz4770_codec_writeable(struct device * dev,unsigned int reg)801 static bool jz4770_codec_writeable(struct device *dev, unsigned int reg)
802 {
803 	switch (reg) {
804 	case JZ4770_CODEC_REG_SR:
805 	case JZ4770_CODEC_REG_MISSING_REG1:
806 	case JZ4770_CODEC_REG_MISSING_REG2:
807 		return false;
808 	default:
809 		return true;
810 	}
811 }
812 
jz4770_codec_io_wait(struct jz_codec * codec)813 static int jz4770_codec_io_wait(struct jz_codec *codec)
814 {
815 	u32 reg;
816 
817 	return readl_poll_timeout(codec->base + ICDC_RGADW_OFFSET, reg,
818 				  !(reg & ICDC_RGADW_RGWR),
819 				  1000, 1 * USEC_PER_SEC);
820 }
821 
jz4770_codec_reg_read(void * context,unsigned int reg,unsigned int * val)822 static int jz4770_codec_reg_read(void *context, unsigned int reg,
823 				 unsigned int *val)
824 {
825 	struct jz_codec *codec = context;
826 	unsigned int i;
827 	u32 tmp;
828 	int ret;
829 
830 	ret = jz4770_codec_io_wait(codec);
831 	if (ret)
832 		return ret;
833 
834 	tmp = readl(codec->base + ICDC_RGADW_OFFSET);
835 	tmp = (tmp & ~ICDC_RGADW_RGADDR_MASK)
836 	    | (reg << ICDC_RGADW_RGADDR_OFFSET);
837 	writel(tmp, codec->base + ICDC_RGADW_OFFSET);
838 
839 	/* wait 6+ cycles */
840 	for (i = 0; i < 6; i++)
841 		*val = readl(codec->base + ICDC_RGDATA_OFFSET) &
842 			ICDC_RGDATA_RGDOUT_MASK;
843 
844 	return 0;
845 }
846 
jz4770_codec_reg_write(void * context,unsigned int reg,unsigned int val)847 static int jz4770_codec_reg_write(void *context, unsigned int reg,
848 				  unsigned int val)
849 {
850 	struct jz_codec *codec = context;
851 	int ret;
852 
853 	ret = jz4770_codec_io_wait(codec);
854 	if (ret)
855 		return ret;
856 
857 	writel(ICDC_RGADW_RGWR | (reg << ICDC_RGADW_RGADDR_OFFSET) | val,
858 	       codec->base + ICDC_RGADW_OFFSET);
859 
860 	ret = jz4770_codec_io_wait(codec);
861 	if (ret)
862 		return ret;
863 
864 	return 0;
865 }
866 
867 static const u8 jz4770_codec_reg_defaults[] = {
868 	0x00, 0xC3, 0xC3, 0x90, 0x98, 0xFF, 0x90, 0xB1,
869 	0x11, 0x10, 0x00, 0x03, 0x00, 0x00, 0x40, 0x00,
870 	0xFF, 0x00, 0x06, 0x06, 0x06, 0x06, 0x00, 0x00,
871 	0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x34,
872 	0x07, 0x44, 0x1F, 0x00
873 };
874 
875 static const struct regmap_config jz4770_codec_regmap_config = {
876 	.reg_bits = 7,
877 	.val_bits = 8,
878 
879 	.max_register = JZ4770_CODEC_REG_AGC5,
880 	.volatile_reg = jz4770_codec_volatile,
881 	.readable_reg = jz4770_codec_readable,
882 	.writeable_reg = jz4770_codec_writeable,
883 
884 	.reg_read = jz4770_codec_reg_read,
885 	.reg_write = jz4770_codec_reg_write,
886 
887 	.reg_defaults_raw = jz4770_codec_reg_defaults,
888 	.num_reg_defaults_raw = ARRAY_SIZE(jz4770_codec_reg_defaults),
889 	.cache_type = REGCACHE_FLAT,
890 };
891 
jz4770_codec_probe(struct platform_device * pdev)892 static int jz4770_codec_probe(struct platform_device *pdev)
893 {
894 	struct device *dev = &pdev->dev;
895 	struct jz_codec *codec;
896 	int ret;
897 
898 	codec = devm_kzalloc(dev, sizeof(*codec), GFP_KERNEL);
899 	if (!codec)
900 		return -ENOMEM;
901 
902 	codec->dev = dev;
903 
904 	codec->base = devm_platform_ioremap_resource(pdev, 0);
905 	if (IS_ERR(codec->base))
906 		return PTR_ERR(codec->base);
907 
908 	codec->regmap = devm_regmap_init(dev, NULL, codec,
909 					&jz4770_codec_regmap_config);
910 	if (IS_ERR(codec->regmap))
911 		return PTR_ERR(codec->regmap);
912 
913 	codec->clk = devm_clk_get(dev, "aic");
914 	if (IS_ERR(codec->clk))
915 		return PTR_ERR(codec->clk);
916 
917 	platform_set_drvdata(pdev, codec);
918 
919 	ret = devm_snd_soc_register_component(dev, &jz4770_codec_soc_codec_dev,
920 					      &jz4770_codec_dai, 1);
921 	if (ret) {
922 		dev_err(dev, "Failed to register codec: %d\n", ret);
923 		return ret;
924 	}
925 
926 	return 0;
927 }
928 
929 static const struct of_device_id jz4770_codec_of_matches[] = {
930 	{ .compatible = "ingenic,jz4770-codec", },
931 	{ /* sentinel */ }
932 };
933 MODULE_DEVICE_TABLE(of, jz4770_codec_of_matches);
934 
935 static struct platform_driver jz4770_codec_driver = {
936 	.probe			= jz4770_codec_probe,
937 	.driver			= {
938 		.name		= "jz4770-codec",
939 		.of_match_table = jz4770_codec_of_matches,
940 	},
941 };
942 module_platform_driver(jz4770_codec_driver);
943 
944 MODULE_DESCRIPTION("JZ4770 SoC internal codec driver");
945 MODULE_AUTHOR("Maarten ter Huurne <maarten@treewalker.org>");
946 MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
947 MODULE_LICENSE("GPL v2");
948