3 // Driver for the Texas Instruments TAS2764 CODEC
26 #include "tas2764.h"
65 	struct tas2764_priv *tas2764 = data;  in tas2764_irq()  local
71 		latched[i] = snd_soc_component_read(tas2764->component,  in tas2764_irq()
76 			dev_crit_ratelimited(tas2764->dev, "%s\n",  in tas2764_irq()
83 		dev_err_ratelimited(tas2764->dev, "other context to the fault: %02x,%02x,%02x,%02x,%02x",  in tas2764_irq()
85 		snd_soc_component_update_bits(tas2764->component,  in tas2764_irq()
94 static void tas2764_reset(struct tas2764_priv *tas2764)  in tas2764_reset()  argument
96 	if (tas2764->reset_gpio) {  in tas2764_reset()
97 		gpiod_set_value_cansleep(tas2764->reset_gpio, 0);  in tas2764_reset()
99 		gpiod_set_value_cansleep(tas2764->reset_gpio, 1);  in tas2764_reset()
103 	snd_soc_component_write(tas2764->component, TAS2764_SW_RST,  in tas2764_reset()
108 static int tas2764_update_pwr_ctrl(struct tas2764_priv *tas2764)  in tas2764_update_pwr_ctrl()  argument
110 	struct snd_soc_component *component = tas2764->component;  in tas2764_update_pwr_ctrl()
114 	if (tas2764->dac_powered)  in tas2764_update_pwr_ctrl()
115 		val = tas2764->unmuted ?  in tas2764_update_pwr_ctrl()
131 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);  in tas2764_codec_suspend()  local
141 	if (tas2764->sdz_gpio)  in tas2764_codec_suspend()
142 		gpiod_set_value_cansleep(tas2764->sdz_gpio, 0);  in tas2764_codec_suspend()
144 	regcache_cache_only(tas2764->regmap, true);  in tas2764_codec_suspend()
145 	regcache_mark_dirty(tas2764->regmap);  in tas2764_codec_suspend()
152 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);  in tas2764_codec_resume()  local
155 	if (tas2764->sdz_gpio) {  in tas2764_codec_resume()
156 		gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);  in tas2764_codec_resume()
160 	ret = tas2764_update_pwr_ctrl(tas2764);  in tas2764_codec_resume()
165 	regcache_cache_only(tas2764->regmap, false);  in tas2764_codec_resume()
167 	return regcache_sync(tas2764->regmap);  in tas2764_codec_resume()
189 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);  in tas2764_dac_event()  local
194 		tas2764->dac_powered = true;  in tas2764_dac_event()
195 		ret = tas2764_update_pwr_ctrl(tas2764);  in tas2764_dac_event()
198 		tas2764->dac_powered = false;  in tas2764_dac_event()
199 		ret = tas2764_update_pwr_ctrl(tas2764);  in tas2764_dac_event()
202 		dev_err(tas2764->dev, "Unsupported event\n");  in tas2764_dac_event()
244 	struct tas2764_priv *tas2764 =  in tas2764_mute()  local
247 	tas2764->unmuted = !mute;  in tas2764_mute()
248 	return tas2764_update_pwr_ctrl(tas2764);  in tas2764_mute()
251 static int tas2764_set_bitwidth(struct tas2764_priv *tas2764, int bitwidth)  in tas2764_set_bitwidth()  argument
253 	struct snd_soc_component *component = tas2764->component;  in tas2764_set_bitwidth()
285 	val = snd_soc_component_read(tas2764->component, TAS2764_PWR_CTRL);  in tas2764_set_bitwidth()
294 	ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,  in tas2764_set_bitwidth()
305 	ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,  in tas2764_set_bitwidth()
314 static int tas2764_set_samplerate(struct tas2764_priv *tas2764, int samplerate)  in tas2764_set_samplerate()  argument
316 	struct snd_soc_component *component = tas2764->component;  in tas2764_set_samplerate()
356 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);  in tas2764_hw_params()  local
359 	ret = tas2764_set_bitwidth(tas2764, params_format(params));  in tas2764_hw_params()
363 	return tas2764_set_samplerate(tas2764, params_rate(params));  in tas2764_hw_params()
369 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);  in tas2764_set_fmt()  local
406 		dev_err(tas2764->dev,  in tas2764_set_fmt()
432 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);  in tas2764_set_dai_tdm_slot()  local
481 					    tas2764->v_sense_slot);  in tas2764_set_dai_tdm_slot()
487 					    tas2764->i_sense_slot);  in tas2764_set_dai_tdm_slot()
510 		.name = "tas2764 ASI1",
533 	struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);  in tas2764_codec_probe()  local
536 	tas2764->component = component;  in tas2764_codec_probe()
538 	if (tas2764->sdz_gpio) {  in tas2764_codec_probe()
539 		gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);  in tas2764_codec_probe()
543 	tas2764_reset(tas2764);  in tas2764_codec_probe()
545 	if (tas2764->irq) {  in tas2764_codec_probe()
546 		ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK0, 0xff);  in tas2764_codec_probe()
550 		ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK1, 0xff);  in tas2764_codec_probe()
554 		ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK2, 0xff);  in tas2764_codec_probe()
558 		ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK3, 0xff);  in tas2764_codec_probe()
562 		ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK4, 0xff);  in tas2764_codec_probe()
566 		ret = devm_request_threaded_irq(tas2764->dev, tas2764->irq, NULL, tas2764_irq,  in tas2764_codec_probe()
568 						"tas2764", tas2764);  in tas2764_codec_probe()
570 			dev_warn(tas2764->dev, "failed to request IRQ: %d\n", ret);  in tas2764_codec_probe()
573 	ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,  in tas2764_codec_probe()
578 	ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,  in tas2764_codec_probe()
668 static int tas2764_parse_dt(struct device *dev, struct tas2764_priv *tas2764)  in tas2764_parse_dt()  argument
672 	tas2764->reset_gpio = devm_gpiod_get_optional(tas2764->dev, "reset",  in tas2764_parse_dt()
674 	if (IS_ERR(tas2764->reset_gpio)) {  in tas2764_parse_dt()
675 		if (PTR_ERR(tas2764->reset_gpio) == -EPROBE_DEFER) {  in tas2764_parse_dt()
676 			tas2764->reset_gpio = NULL;  in tas2764_parse_dt()
681 	tas2764->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);  in tas2764_parse_dt()
682 	if (IS_ERR(tas2764->sdz_gpio)) {  in tas2764_parse_dt()
683 		if (PTR_ERR(tas2764->sdz_gpio) == -EPROBE_DEFER)  in tas2764_parse_dt()
686 		tas2764->sdz_gpio = NULL;  in tas2764_parse_dt()
690 				       &tas2764->i_sense_slot);  in tas2764_parse_dt()
692 		tas2764->i_sense_slot = 0;  in tas2764_parse_dt()
695 				       &tas2764->v_sense_slot);  in tas2764_parse_dt()
697 		tas2764->v_sense_slot = 2;  in tas2764_parse_dt()
704 	struct tas2764_priv *tas2764;  in tas2764_i2c_probe()  local
707 	tas2764 = devm_kzalloc(&client->dev, sizeof(struct tas2764_priv),  in tas2764_i2c_probe()
709 	if (!tas2764)  in tas2764_i2c_probe()
712 	tas2764->dev = &client->dev;  in tas2764_i2c_probe()
713 	tas2764->irq = client->irq;  in tas2764_i2c_probe()
714 	i2c_set_clientdata(client, tas2764);  in tas2764_i2c_probe()
715 	dev_set_drvdata(&client->dev, tas2764);  in tas2764_i2c_probe()
717 	tas2764->regmap = devm_regmap_init_i2c(client, &tas2764_i2c_regmap);  in tas2764_i2c_probe()
718 	if (IS_ERR(tas2764->regmap)) {  in tas2764_i2c_probe()
719 		result = PTR_ERR(tas2764->regmap);  in tas2764_i2c_probe()
726 		result = tas2764_parse_dt(&client->dev, tas2764);  in tas2764_i2c_probe()
728 			dev_err(tas2764->dev, "%s: Failed to parse devicetree\n",  in tas2764_i2c_probe()
734 	return devm_snd_soc_register_component(tas2764->dev,  in tas2764_i2c_probe()
741 	{ "tas2764", 0},
748 	{ .compatible = "ti,tas2764" },
756 		.name   = "tas2764",
765 MODULE_DESCRIPTION("TAS2764 I2C Smart Amplifier driver");