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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d 
 kernel/sound/soc/codecs/ad193x.c
....@@ -1,9 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * AD193X Audio Codec driver supporting AD1936/7/8/9
34  *
45  * Copyright 2010 Analog Devices Inc.
5
- *
6
- * Licensed under the GPL-2 or later.
76  */
87 
98 #include <linux/module.h>
....@@ -36,6 +35,13 @@
3635 			    ad193x_deemp);
3736 
3837 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
38
+
39
+static const unsigned int ad193x_sb[] = {32};
40
+
41
+static struct snd_pcm_hw_constraint_list constr = {
42
+	.list = ad193x_sb,
43
+	.count = ARRAY_SIZE(ad193x_sb),
44
+};
3945 
4046 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
4147 	/* DAC volume control */
....@@ -93,6 +99,15 @@
9399 	SND_SOC_DAPM_INPUT("ADC2IN"),
94100 };
95101 
102
+static int ad193x_check_pll(struct snd_soc_dapm_widget *source,
103
+			    struct snd_soc_dapm_widget *sink)
104
+{
105
+	struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
106
+	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
107
+
108
+	return !!ad193x->sysclk;
109
+}
110
+
96111 static const struct snd_soc_dapm_route audio_paths[] = {
97112 	{ "DAC", NULL, "SYSCLK" },
98113 	{ "DAC Output", NULL, "DAC" },
....@@ -101,7 +116,7 @@
101116 	{ "DAC2OUT", NULL, "DAC Output" },
102117 	{ "DAC3OUT", NULL, "DAC Output" },
103118 	{ "DAC4OUT", NULL, "DAC Output" },
104
-	{ "SYSCLK", NULL, "PLL_PWR" },
119
+	{ "SYSCLK", NULL, "PLL_PWR", &ad193x_check_pll },
105120 };
106121 
107122 static const struct snd_soc_dapm_route ad193x_adc_audio_paths[] = {
....@@ -128,7 +143,7 @@
128143  * DAI ops entries
129144  */
130145 
131
-static int ad193x_mute(struct snd_soc_dai *dai, int mute)
146
+static int ad193x_mute(struct snd_soc_dai *dai, int mute, int direction)
132147 {
133148 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
134149 
....@@ -181,23 +196,26 @@
181196 {
182197 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(codec_dai->component);
183198 	unsigned int adc_serfmt = 0;
199
+	unsigned int dac_serfmt = 0;
184200 	unsigned int adc_fmt = 0;
185201 	unsigned int dac_fmt = 0;
186202 
187203 	/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
188
-	 * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
204
+	 * with TDM), ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) and DAC I2S mode
205
+	 * (SND_SOC_DAIFMT_I2S)
189206 	 */
190207 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
191208 	case SND_SOC_DAIFMT_I2S:
192209 		adc_serfmt |= AD193X_ADC_SERFMT_TDM;
210
+		dac_serfmt |= AD193X_DAC_SERFMT_STEREO;
193211 		break;
194212 	case SND_SOC_DAIFMT_DSP_A:
195213 		adc_serfmt |= AD193X_ADC_SERFMT_AUX;
214
+		dac_serfmt |= AD193X_DAC_SERFMT_TDM;
196215 		break;
197216 	default:
198217 		if (ad193x_has_adc(ad193x))
199218 			return -EINVAL;
200
-		break;
201219 	}
202220 
203221 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
....@@ -220,6 +238,10 @@
220238 	default:
221239 		return -EINVAL;
222240 	}
241
+
242
+	/* For DSP_*, LRCLK's polarity must be inverted */
243
+	if (fmt & SND_SOC_DAIFMT_DSP_A)
244
+		dac_fmt ^= AD193X_DAC_LEFT_HIGH;
223245 
224246 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
225247 	case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
....@@ -248,6 +270,8 @@
248270 		regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
249271 				   AD193X_ADC_FMT_MASK, adc_fmt);
250272 	}
273
+	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0,
274
+			   AD193X_DAC_SERFMT_MASK, dac_serfmt);
251275 	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
252276 		AD193X_DAC_FMT_MASK, dac_fmt);
253277 
....@@ -258,7 +282,22 @@
258282 		int clk_id, unsigned int freq, int dir)
259283 {
260284 	struct snd_soc_component *component = codec_dai->component;
285
+	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
261286 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
287
+
288
+	if (clk_id == AD193X_SYSCLK_MCLK) {
289
+		/* MCLK must be 512 x fs */
290
+		if (dir == SND_SOC_CLOCK_OUT || freq != 24576000)
291
+			return -EINVAL;
292
+
293
+		regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL1,
294
+				   AD193X_PLL_SRC_MASK,
295
+				   AD193X_PLL_DAC_SRC_MCLK |
296
+				   AD193X_PLL_CLK_SRC_MCLK);
297
+
298
+		snd_soc_dapm_sync(dapm);
299
+		return 0;
300
+	}
262301 	switch (freq) {
263302 	case 12288000:
264303 	case 18432000:
....@@ -321,12 +360,22 @@
321360 	return 0;
322361 }
323362 
363
+static int ad193x_startup(struct snd_pcm_substream *substream,
364
+			  struct snd_soc_dai *dai)
365
+{
366
+	return snd_pcm_hw_constraint_list(substream->runtime, 0,
367
+				   SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
368
+				   &constr);
369
+}
370
+
324371 static const struct snd_soc_dai_ops ad193x_dai_ops = {
372
+	.startup = ad193x_startup,
325373 	.hw_params = ad193x_hw_params,
326
-	.digital_mute = ad193x_mute,
374
+	.mute_stream = ad193x_mute,
327375 	.set_tdm_slot = ad193x_set_tdm_slot,
328376 	.set_sysclk	= ad193x_set_dai_sysclk,
329377 	.set_fmt = ad193x_set_dai_fmt,
378
+	.no_capture_mute = 1,
330379 };
331380 
332381 /* codec DAI instance */
....@@ -351,6 +400,53 @@
351400 	.ops = &ad193x_dai_ops,
352401 };
353402 
403
+/* codec DAI instance for DAC only */
404
+static struct snd_soc_dai_driver ad193x_no_adc_dai = {
405
+	.name = "ad193x-hifi",
406
+	.playback = {
407
+		.stream_name = "Playback",
408
+		.channels_min = 2,
409
+		.channels_max = 8,
410
+		.rates = SNDRV_PCM_RATE_48000,
411
+		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
412
+			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
413
+	},
414
+	.ops = &ad193x_dai_ops,
415
+};
416
+
417
+/* codec register values to set after reset */
418
+static void ad193x_reg_default_init(struct ad193x_priv *ad193x)
419
+{
420
+	static const struct reg_sequence reg_init[] = {
421
+		{  0, 0x99 },	/* PLL_CLK_CTRL0: pll input: mclki/xi 12.288Mhz */
422
+		{  1, 0x04 },	/* PLL_CLK_CTRL1: no on-chip Vref */
423
+		{  2, 0x40 },	/* DAC_CTRL0: TDM mode */
424
+		{  3, 0x00 },	/* DAC_CTRL1: reset */
425
+		{  4, 0x1A },	/* DAC_CTRL2: 48kHz de-emphasis, unmute dac */
426
+		{  5, 0x00 },	/* DAC_CHNL_MUTE: unmute DAC channels */
427
+		{  6, 0x00 },	/* DAC_L1_VOL: no attenuation */
428
+		{  7, 0x00 },	/* DAC_R1_VOL: no attenuation */
429
+		{  8, 0x00 },	/* DAC_L2_VOL: no attenuation */
430
+		{  9, 0x00 },	/* DAC_R2_VOL: no attenuation */
431
+		{ 10, 0x00 },	/* DAC_L3_VOL: no attenuation */
432
+		{ 11, 0x00 },	/* DAC_R3_VOL: no attenuation */
433
+		{ 12, 0x00 },	/* DAC_L4_VOL: no attenuation */
434
+		{ 13, 0x00 },	/* DAC_R4_VOL: no attenuation */
435
+	};
436
+	static const struct reg_sequence reg_adc_init[] = {
437
+		{ 14, 0x03 },	/* ADC_CTRL0: high-pass filter enable */
438
+		{ 15, 0x43 },	/* ADC_CTRL1: sata delay=1, adc aux mode */
439
+		{ 16, 0x00 },	/* ADC_CTRL2: reset */
440
+	};
441
+
442
+	regmap_multi_reg_write(ad193x->regmap, reg_init, ARRAY_SIZE(reg_init));
443
+
444
+	if (ad193x_has_adc(ad193x)) {
445
+		regmap_multi_reg_write(ad193x->regmap, reg_adc_init,
446
+				       ARRAY_SIZE(reg_adc_init));
447
+	}
448
+}
449
+
354450 static int ad193x_component_probe(struct snd_soc_component *component)
355451 {
356452 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
....@@ -358,25 +454,7 @@
358454 	int num, ret;
359455 
360456 	/* default setting for ad193x */
361
-
362
-	/* unmute dac channels */
363
-	regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
364
-	/* de-emphasis: 48kHz, powedown dac */
365
-	regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
366
-	/* dac in tdm mode */
367
-	regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40);
368
-
369
-	/* adc only */
370
-	if (ad193x_has_adc(ad193x)) {
371
-		/* high-pass filter enable */
372
-		regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
373
-		/* sata delay=1, adc aux mode */
374
-		regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
375
-	}
376
-
377
-	/* pll input: mclki/xi */
378
-	regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
379
-	regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
457
+	ad193x_reg_default_init(ad193x);
380458 
381459 	/* adc only */
382460 	if (ad193x_has_adc(ad193x)) {
....@@ -444,8 +522,11 @@
444522 
445523 	dev_set_drvdata(dev, ad193x);
446524 
525
+	if (ad193x_has_adc(ad193x))
526
+		return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
527
+						       &ad193x_dai, 1);
447528 	return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
448
-		&ad193x_dai, 1);
529
+		&ad193x_no_adc_dai, 1);
449530 }
450531 EXPORT_SYMBOL_GPL(ad193x_probe);
451532