1 // SPDX-License-Identifier: GPL-2.0-only
3  * wm8523.c  --  WM8523 ALSA SoC Audio driver
40 	struct regulator_bulk_data supplies[WM8523_NUM_SUPPLIES];  member
47 	{ 2, 0x0000 },     /* R2 - PSCTRL1 */
48 	{ 3, 0x1812 },     /* R3 - AIF_CTRL1 */
49 	{ 4, 0x0000 },     /* R4 - AIF_CTRL2 */
50 	{ 5, 0x0001 },     /* R5 - DAC_CTRL3 */
51 	{ 6, 0x0190 },     /* R6 - DAC_GAINL */
52 	{ 7, 0x0190 },     /* R7 - DAC_GAINR */
53 	{ 8, 0x0000 },     /* R8 - ZERO_DETECT */
67 static const DECLARE_TLV_DB_SCALE(dac_tlv, -10000, 25, 0);
124 	struct snd_soc_component *component = dai->component;  in wm8523_startup()
128 	 * MCLK supplied to the CODEC - enforce this.  in wm8523_startup()
130 	if (!wm8523->sysclk) {  in wm8523_startup()
131 		dev_err(component->dev,  in wm8523_startup()
133 		return -EINVAL;  in wm8523_startup()
136 	snd_pcm_hw_constraint_list(substream->runtime, 0,  in wm8523_startup()
138 				   &wm8523->rate_constraint);  in wm8523_startup()
147 	struct snd_soc_component *component = dai->component;  in wm8523_hw_params()
155 		if (wm8523->sysclk / params_rate(params) ==  in wm8523_hw_params()
162 		dev_err(component->dev, "MCLK/fs ratio %d unsupported\n",  in wm8523_hw_params()
163 			wm8523->sysclk / params_rate(params));  in wm8523_hw_params()
164 		return -EINVAL;  in wm8523_hw_params()
171 		/* Find a fs->bclk ratio */  in wm8523_hw_params()
177 			dev_err(component->dev,  in wm8523_hw_params()
180 			return -EINVAL;  in wm8523_hw_params()
211 	struct snd_soc_component *component = codec_dai->component;  in wm8523_set_dai_sysclk()
216 	wm8523->sysclk = freq;  in wm8523_set_dai_sysclk()
218 	wm8523->rate_constraint.count = 0;  in wm8523_set_dai_sysclk()
238 			dev_dbg(component->dev, "Supported sample rate: %dHz\n",  in wm8523_set_dai_sysclk()
240 			wm8523->rate_constraint_list[i] = val;  in wm8523_set_dai_sysclk()
241 			wm8523->rate_constraint.count++;  in wm8523_set_dai_sysclk()
244 			dev_dbg(component->dev, "Skipping sample rate: %dHz\n",  in wm8523_set_dai_sysclk()
250 	if (wm8523->rate_constraint.count == 0)  in wm8523_set_dai_sysclk()
251 		return -EINVAL;  in wm8523_set_dai_sysclk()
260 	struct snd_soc_component *component = codec_dai->component;  in wm8523_set_dai_fmt()
273 		return -EINVAL;  in wm8523_set_dai_fmt()
292 		return -EINVAL;  in wm8523_set_dai_fmt()
308 		return -EINVAL;  in wm8523_set_dai_fmt()
327 		/* Full power on */  in wm8523_set_bias_level()
334 			ret = regulator_bulk_enable(ARRAY_SIZE(wm8523->supplies),  in wm8523_set_bias_level()
335 						    wm8523->supplies);  in wm8523_set_bias_level()
337 				dev_err(component->dev,  in wm8523_set_bias_level()
338 					"Failed to enable supplies: %d\n",  in wm8523_set_bias_level()
344 			regcache_sync(wm8523->regmap);  in wm8523_set_bias_level()
346 			/* Initial power up */  in wm8523_set_bias_level()
353 		/* Power up to mute */  in wm8523_set_bias_level()
360 		/* The chip runs through the power down sequence for us. */  in wm8523_set_bias_level()
365 		regulator_bulk_disable(ARRAY_SIZE(wm8523->supplies),  in wm8523_set_bias_level()
366 				       wm8523->supplies);  in wm8523_set_bias_level()
385 	.name = "wm8523-hifi",
400 	wm8523->rate_constraint.list = &wm8523->rate_constraint_list[0];  in wm8523_probe()
401 	wm8523->rate_constraint.count =  in wm8523_probe()
402 		ARRAY_SIZE(wm8523->rate_constraint_list);  in wm8523_probe()
404 	/* Change some default settings - latch VU and enable ZC */  in wm8523_probe()
451 	wm8523 = devm_kzalloc(&i2c->dev, sizeof(struct wm8523_priv),  in wm8523_i2c_probe()
454 		return -ENOMEM;  in wm8523_i2c_probe()
456 	wm8523->regmap = devm_regmap_init_i2c(i2c, &wm8523_regmap);  in wm8523_i2c_probe()
457 	if (IS_ERR(wm8523->regmap)) {  in wm8523_i2c_probe()
458 		ret = PTR_ERR(wm8523->regmap);  in wm8523_i2c_probe()
459 		dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);  in wm8523_i2c_probe()
463 	for (i = 0; i < ARRAY_SIZE(wm8523->supplies); i++)  in wm8523_i2c_probe()
464 		wm8523->supplies[i].supply = wm8523_supply_names[i];  in wm8523_i2c_probe()
466 	ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8523->supplies),  in wm8523_i2c_probe()
467 				      wm8523->supplies);  in wm8523_i2c_probe()
469 		dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);  in wm8523_i2c_probe()
473 	ret = regulator_bulk_enable(ARRAY_SIZE(wm8523->supplies),  in wm8523_i2c_probe()
474 				    wm8523->supplies);  in wm8523_i2c_probe()
476 		dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);  in wm8523_i2c_probe()
480 	ret = regmap_read(wm8523->regmap, WM8523_DEVICE_ID, &val);  in wm8523_i2c_probe()
482 		dev_err(&i2c->dev, "Failed to read ID register\n");  in wm8523_i2c_probe()
486 		dev_err(&i2c->dev, "Device is not a WM8523, ID is %x\n", ret);  in wm8523_i2c_probe()
487 		ret = -EINVAL;  in wm8523_i2c_probe()
491 	ret = regmap_read(wm8523->regmap, WM8523_REVISION, &val);  in wm8523_i2c_probe()
493 		dev_err(&i2c->dev, "Failed to read revision register\n");  in wm8523_i2c_probe()
496 	dev_info(&i2c->dev, "revision %c\n",  in wm8523_i2c_probe()
499 	ret = regmap_write(wm8523->regmap, WM8523_DEVICE_ID, 0x8523);  in wm8523_i2c_probe()
501 		dev_err(&i2c->dev, "Failed to reset device: %d\n", ret);  in wm8523_i2c_probe()
505 	regulator_bulk_disable(ARRAY_SIZE(wm8523->supplies), wm8523->supplies);  in wm8523_i2c_probe()
509 	ret = devm_snd_soc_register_component(&i2c->dev,  in wm8523_i2c_probe()
515 	regulator_bulk_disable(ARRAY_SIZE(wm8523->supplies), wm8523->supplies);  in wm8523_i2c_probe()