1 // SPDX-License-Identifier: GPL-2.0-only
3 // nau8325.c -- Nuvoton NAU8325 audio codec driver
30 #define CLK_PROC_BYPASS (-1)
119 static bool nau8325_readable_reg(struct device *dev, unsigned int reg)  in nau8325_readable_reg()
142 static bool nau8325_writeable_reg(struct device *dev, unsigned int reg)  in nau8325_writeable_reg()
162 static bool nau8325_volatile_reg(struct device *dev, unsigned int reg)  in nau8325_volatile_reg()
181 static const unsigned int nau8325_dac_oversampl_values[] = {
192 static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -8000, 600);
215 static int nau8325_dac_event(struct snd_soc_dapm_widget *w,  in nau8325_dac_event()
216 			     struct snd_kcontrol *kcontrol, int event)  in nau8325_dac_event()
219 		snd_soc_dapm_to_component(w->dapm);  in nau8325_dac_event()
224 		regmap_update_bits(nau8325->regmap, NAU8325_R12_MUTE_CTRL,  in nau8325_dac_event()
230 		regmap_update_bits(nau8325->regmap, NAU8325_R12_MUTE_CTRL,  in nau8325_dac_event()
235 		return -EINVAL;  in nau8325_dac_event()
241 static int nau8325_powerup_event(struct snd_soc_dapm_widget *w,  in nau8325_powerup_event()
242 				 struct snd_kcontrol *kcontrol, int event)  in nau8325_powerup_event()
245 		snd_soc_dapm_to_component(w->dapm);  in nau8325_powerup_event()
248 	if (nau8325->clock_detection)  in nau8325_powerup_event()
253 		regmap_update_bits(nau8325->regmap, NAU8325_R40_CLK_DET_CTRL,  in nau8325_powerup_event()
257 		regmap_update_bits(nau8325->regmap, NAU8325_R40_CLK_DET_CTRL,  in nau8325_powerup_event()
261 		return -EINVAL;  in nau8325_powerup_event()
293 static int nau8325_srate_clk_apply(struct nau8325 *nau8325,  in nau8325_srate_clk_apply()
295 				   int n1_sel, int mclk_mult_sel, int n2_sel)  in nau8325_srate_clk_apply()
299 		dev_dbg(nau8325->dev, "The CLK isn't supported.");  in nau8325_srate_clk_apply()
300 		return -EINVAL;  in nau8325_srate_clk_apply()
303 	regmap_update_bits(nau8325->regmap, NAU8325_R40_CLK_DET_CTRL,  in nau8325_srate_clk_apply()
305 			   (srate_table->range << NAU8325_REG_SRATE_SFT) |  in nau8325_srate_clk_apply()
306 			   (srate_table->max ? NAU8325_REG_DIV_MAX : 0));  in nau8325_srate_clk_apply()
307 	regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,  in nau8325_srate_clk_apply()
309 	regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,  in nau8325_srate_clk_apply()
314 		regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,  in nau8325_srate_clk_apply()
319 		regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,  in nau8325_srate_clk_apply()
325 		regmap_update_bits(nau8325->regmap, NAU8325_R65_ANALOG_CONTROL_5,  in nau8325_srate_clk_apply()
329 		regmap_update_bits(nau8325->regmap, NAU8325_R65_ANALOG_CONTROL_5,  in nau8325_srate_clk_apply()
334 		regmap_update_bits(nau8325->regmap, NAU8325_R65_ANALOG_CONTROL_5,  in nau8325_srate_clk_apply()
342 static int nau8325_clksrc_n2(struct nau8325 *nau8325,  in nau8325_clksrc_n2()
344 			     int mclk, int *n2_sel)  in nau8325_clksrc_n2()
346 	int i, mclk_src, ratio;  in nau8325_clksrc_n2()
351 		if (srate_table->mclk_src[NAU8325_MCLK_FS_RATIO_256] == mclk_src) {  in nau8325_clksrc_n2()
354 		} else if (srate_table->mclk_src[NAU8325_MCLK_FS_RATIO_400] == mclk_src) {  in nau8325_clksrc_n2()
357 		} else if (srate_table->mclk_src[NAU8325_MCLK_FS_RATIO_500] == mclk_src) {  in nau8325_clksrc_n2()
368 static const struct nau8325_srate_attr *target_srate_attribute(int srate)  in target_srate_attribute()
370 	int i;  in target_srate_attribute()
385 static int nau8325_clksrc_choose(struct nau8325 *nau8325,  in nau8325_clksrc_choose()
387 				 int *n1_sel, int *mult_sel, int *n2_sel)  in nau8325_clksrc_choose()
389 	int i, j, mclk, mclk_max, ratio, ratio_sel, n2_max;  in nau8325_clksrc_choose()
391 	if (!nau8325->mclk || !nau8325->fs)  in nau8325_clksrc_choose()
395 	*srate_table = target_srate_attribute(nau8325->fs);  in nau8325_clksrc_choose()
402 	ratio = nau8325_clksrc_n2(nau8325, *srate_table, nau8325->mclk, n2_sel);  in nau8325_clksrc_choose()
414 			mclk = nau8325->mclk << mclk_n3_mult[j].param;  in nau8325_clksrc_choose()
436 	dev_dbg(nau8325->dev, "The MCLK %d is invalid. It can't get MCLK_SRC of 256/400/500 FS (%d)",  in nau8325_clksrc_choose()
437 		nau8325->mclk, nau8325->fs);  in nau8325_clksrc_choose()
438 	return -EINVAL;  in nau8325_clksrc_choose()
440 …dev_dbg(nau8325->dev, "nau8325->fs=%d,range=0x%x, %s, (n1,mu,n2,dmu):(%d,%d,%d), MCLK_SRC=%uHz (%d…  in nau8325_clksrc_choose()
441 		nau8325->fs, (*srate_table)->range,  in nau8325_clksrc_choose()
442 		(*srate_table)->max ? "MAX" : "MIN",  in nau8325_clksrc_choose()
448 		(*srate_table)->mclk_src[ratio],  in nau8325_clksrc_choose()
449 		(*srate_table)->mclk_src[ratio] / nau8325->fs);  in nau8325_clksrc_choose()
454 static int nau8325_clock_config(struct nau8325 *nau8325)  in nau8325_clock_config()
457 	int ret, n1_sel, mult_sel, n2_sel;  in nau8325_clock_config()
476 	unsigned int osr;  in nau8325_get_osr()
478 	regmap_read(nau8325->regmap, NAU8325_R29_DAC_CTRL1, &osr);  in nau8325_get_osr()
486 static int nau8325_dai_startup(struct snd_pcm_substream *substream,  in nau8325_dai_startup()
489 	struct snd_soc_component *component = dai->component;  in nau8325_dai_startup()
494 	if (!osr || !osr->osr)  in nau8325_dai_startup()
495 		return -EINVAL;  in nau8325_dai_startup()
497 	return snd_pcm_hw_constraint_minmax(substream->runtime,  in nau8325_dai_startup()
499 					    0, CLK_DA_AD_MAX / osr->osr);  in nau8325_dai_startup()
502 static int nau8325_hw_params(struct snd_pcm_substream *substream,  in nau8325_hw_params()
506 	struct snd_soc_component *component = dai->component;  in nau8325_hw_params()
508 	unsigned int val_len = 0;  in nau8325_hw_params()
510 	int ret;  in nau8325_hw_params()
512 	nau8325->fs = params_rate(params);  in nau8325_hw_params()
514 	if (!osr || !osr->osr || nau8325->fs * osr->osr > CLK_DA_AD_MAX) {  in nau8325_hw_params()
515 		ret = -EINVAL;  in nau8325_hw_params()
518 	regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,  in nau8325_hw_params()
520 			   osr->clk_src << NAU8325_CLK_DAC_SRC_SFT);  in nau8325_hw_params()
540 		ret = -EINVAL;  in nau8325_hw_params()
544 	regmap_update_bits(nau8325->regmap, NAU8325_R0D_I2S_PCM_CTRL1,  in nau8325_hw_params()
553 static int nau8325_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)  in nau8325_set_fmt()
555 	struct snd_soc_component *component = dai->component;  in nau8325_set_fmt()
557 	unsigned int ctrl1_val = 0;  in nau8325_set_fmt()
563 		return -EINVAL;  in nau8325_set_fmt()
573 		return -EINVAL;  in nau8325_set_fmt()
594 		return -EINVAL;  in nau8325_set_fmt()
597 	regmap_update_bits(nau8325->regmap, NAU8325_R0D_I2S_PCM_CTRL1,  in nau8325_set_fmt()
604 static int nau8325_set_sysclk(struct snd_soc_component *component, int clk_id,  in nau8325_set_sysclk()
605 			      int source, unsigned int freq, int dir)  in nau8325_set_sysclk()
610 		dev_dbg(nau8325->dev, "MCLK exceeds the range, MCLK:%d", freq);  in nau8325_set_sysclk()
611 		return -EINVAL;  in nau8325_set_sysclk()
614 	nau8325->mclk = freq;  in nau8325_set_sysclk()
615 	dev_dbg(nau8325->dev, "MCLK %dHz", nau8325->mclk);  in nau8325_set_sysclk()
675 	struct regmap *regmap = nau8325->regmap;  in nau8325_init_regs()
676 	struct device *dev = nau8325->dev;  in nau8325_init_regs()
688 	if (nau8325->alc_enable)  in nau8325_init_regs()
691 	if (nau8325->clock_detection)  in nau8325_init_regs()
699 	if (nau8325->clock_det_data)  in nau8325_init_regs()
707 	switch (nau8325->dac_vref_microvolt) {  in nau8325_init_regs()
725 		dev_dbg(dev, "Invalid dac-vref-microvolt %d", nau8325->dac_vref_microvolt);  in nau8325_init_regs()
732 	/* Auto-Att Min Gain 0dB, Class-D N Driver Slew Rate -25%. */  in nau8325_init_regs()
737 	switch (nau8325->vref_impedance_ohms) {  in nau8325_init_regs()
755 		dev_dbg(dev, "Invalid vref-impedance-ohms %d", nau8325->vref_impedance_ohms);  in nau8325_init_regs()
775 	if (nau8325->alc_enable)  in nau8325_init_regs()
778 	if (nau8325->clock_det_data)  in nau8325_init_regs()
784 	if (nau8325->clock_detection)  in nau8325_init_regs()
799 	struct device *dev = nau8325->dev;  in nau8325_print_device_properties()
801 	dev_dbg(dev, "vref-impedance-ohms:     %d", nau8325->vref_impedance_ohms);  in nau8325_print_device_properties()
802 	dev_dbg(dev, "dac-vref-microvolt:      %d", nau8325->dac_vref_microvolt);  in nau8325_print_device_properties()
803 	dev_dbg(dev, "alc-enable:              %d", nau8325->alc_enable);  in nau8325_print_device_properties()
804 	dev_dbg(dev, "clock-det-data:          %d", nau8325->clock_det_data);  in nau8325_print_device_properties()
805 	dev_dbg(dev, "clock-detection-disable: %d", nau8325->clock_detection);  in nau8325_print_device_properties()
808 static int nau8325_read_device_properties(struct device *dev,  in nau8325_read_device_properties()
811 	int ret;  in nau8325_read_device_properties()
813 	nau8325->alc_enable =  in nau8325_read_device_properties()
814 		device_property_read_bool(dev, "nuvoton,alc-enable");  in nau8325_read_device_properties()
815 	nau8325->clock_det_data =  in nau8325_read_device_properties()
816 		device_property_read_bool(dev, "nuvoton,clock-det-data");  in nau8325_read_device_properties()
817 	nau8325->clock_detection =  in nau8325_read_device_properties()
818 		!device_property_read_bool(dev,	"nuvoton,clock-detection-disable");  in nau8325_read_device_properties()
820 	ret = device_property_read_u32(dev, "nuvoton,vref-impedance-ohms",  in nau8325_read_device_properties()
821 				       &nau8325->vref_impedance_ohms);  in nau8325_read_device_properties()
823 		nau8325->vref_impedance_ohms = 125000;  in nau8325_read_device_properties()
824 	ret = device_property_read_u32(dev, "nuvoton,dac-vref-microvolt",  in nau8325_read_device_properties()
825 				       &nau8325->dac_vref_microvolt);  in nau8325_read_device_properties()
827 		nau8325->dac_vref_microvolt = 2880000;  in nau8325_read_device_properties()
832 static int nau8325_i2c_probe(struct i2c_client *i2c,  in nau8325_i2c_probe()
835 	struct device *dev = &i2c->dev;  in nau8325_i2c_probe()
837 	int ret, value;  in nau8325_i2c_probe()
842 			ret = -ENOMEM;  in nau8325_i2c_probe()
851 	nau8325->regmap = devm_regmap_init_i2c(i2c, &nau8325_regmap_config);  in nau8325_i2c_probe()
852 	if (IS_ERR(nau8325->regmap)) {  in nau8325_i2c_probe()
853 		ret = PTR_ERR(nau8325->regmap);  in nau8325_i2c_probe()
856 	nau8325->dev = dev;  in nau8325_i2c_probe()
859 	nau8325_reset_chip(nau8325->regmap);  in nau8325_i2c_probe()
860 	ret = regmap_read(nau8325->regmap, NAU8325_R02_DEVICE_ID, &value);  in nau8325_i2c_probe()