3 // ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D
29 #include "tas2770.h"
33 static void tas2770_reset(struct tas2770_priv *tas2770)  in tas2770_reset()  argument
35 	if (tas2770->reset_gpio) {  in tas2770_reset()
36 		gpiod_set_value_cansleep(tas2770->reset_gpio, 0);  in tas2770_reset()
38 		gpiod_set_value_cansleep(tas2770->reset_gpio, 1);  in tas2770_reset()
42 	snd_soc_component_write(tas2770->component, TAS2770_SW_RST,  in tas2770_reset()
47 static int tas2770_update_pwr_ctrl(struct tas2770_priv *tas2770)  in tas2770_update_pwr_ctrl()  argument
49 	struct snd_soc_component *component = tas2770->component;  in tas2770_update_pwr_ctrl()
53 	if (tas2770->dac_powered)  in tas2770_update_pwr_ctrl()
54 		val = tas2770->unmuted ?  in tas2770_update_pwr_ctrl()
70 	struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);  in tas2770_codec_suspend()  local
73 	regcache_cache_only(tas2770->regmap, true);  in tas2770_codec_suspend()
74 	regcache_mark_dirty(tas2770->regmap);  in tas2770_codec_suspend()
76 	if (tas2770->sdz_gpio) {  in tas2770_codec_suspend()
77 		gpiod_set_value_cansleep(tas2770->sdz_gpio, 0);  in tas2770_codec_suspend()
83 			regcache_cache_only(tas2770->regmap, false);  in tas2770_codec_suspend()
84 			regcache_sync(tas2770->regmap);  in tas2770_codec_suspend()
96 	struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);  in tas2770_codec_resume()  local
99 	if (tas2770->sdz_gpio) {  in tas2770_codec_resume()
100 		gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);  in tas2770_codec_resume()
103 		ret = tas2770_update_pwr_ctrl(tas2770);  in tas2770_codec_resume()
108 	regcache_cache_only(tas2770->regmap, false);  in tas2770_codec_resume()
110 	return regcache_sync(tas2770->regmap);  in tas2770_codec_resume()
133 	struct tas2770_priv *tas2770 =  in tas2770_dac_event()  local
139 		tas2770->dac_powered = 1;  in tas2770_dac_event()
140 		ret = tas2770_update_pwr_ctrl(tas2770);  in tas2770_dac_event()
143 		tas2770->dac_powered = 0;  in tas2770_dac_event()
144 		ret = tas2770_update_pwr_ctrl(tas2770);  in tas2770_dac_event()
147 		dev_err(tas2770->dev, "Not supported evevt\n");  in tas2770_dac_event()
185 	struct tas2770_priv *tas2770 =  in tas2770_mute()  local
188 	tas2770->unmuted = !mute;  in tas2770_mute()
189 	return tas2770_update_pwr_ctrl(tas2770);  in tas2770_mute()
192 static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)  in tas2770_set_bitwidth()  argument
195 	struct snd_soc_component *component = tas2770->component;  in tas2770_set_bitwidth()
202 		tas2770->v_sense_slot = tas2770->i_sense_slot + 2;  in tas2770_set_bitwidth()
208 		tas2770->v_sense_slot = tas2770->i_sense_slot + 4;  in tas2770_set_bitwidth()
214 		tas2770->v_sense_slot = tas2770->i_sense_slot + 4;  in tas2770_set_bitwidth()
228 		tas2770->v_sense_slot);  in tas2770_set_bitwidth()
236 					    tas2770->i_sense_slot);  in tas2770_set_bitwidth()
243 static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)  in tas2770_set_samplerate()  argument
245 	struct snd_soc_component *component = tas2770->component;  in tas2770_set_samplerate()
293 	struct tas2770_priv *tas2770 =  in tas2770_hw_params()  local
297 	ret = tas2770_set_bitwidth(tas2770, params_format(params));  in tas2770_hw_params()
301 	return tas2770_set_samplerate(tas2770, params_rate(params));  in tas2770_hw_params()
307 	struct tas2770_priv *tas2770 =  in tas2770_set_fmt()  local
316 		dev_err(tas2770->dev, "ASI invalid DAI clocking\n");  in tas2770_set_fmt()
334 		dev_err(tas2770->dev, "ASI format Inverse is not found\n");  in tas2770_set_fmt()
362 		dev_err(tas2770->dev,  in tas2770_set_fmt()
467 		.name = "tas2770 ASI1",
492 	struct tas2770_priv *tas2770 =  in tas2770_codec_probe()  local
495 	tas2770->component = component;  in tas2770_codec_probe()
497 	if (tas2770->sdz_gpio) {  in tas2770_codec_probe()
498 		gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);  in tas2770_codec_probe()
502 	tas2770_reset(tas2770);  in tas2770_codec_probe()
503 	regmap_reinit_cache(tas2770->regmap, &tas2770_i2c_regmap);  in tas2770_codec_probe()
532 static int tas2770_register_codec(struct tas2770_priv *tas2770)  in tas2770_register_codec()  argument
534 	return devm_snd_soc_register_component(tas2770->dev,  in tas2770_register_codec()
622 static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)  in tas2770_parse_dt()  argument
627 				      &tas2770->i_sense_slot);  in tas2770_parse_dt()
629 		dev_info(tas2770->dev, "Property %s is missing setting default slot\n",  in tas2770_parse_dt()
632 		tas2770->i_sense_slot = 0;  in tas2770_parse_dt()
636 				      &tas2770->v_sense_slot);  in tas2770_parse_dt()
638 		dev_info(tas2770->dev, "Property %s is missing setting default slot\n",  in tas2770_parse_dt()
641 		tas2770->v_sense_slot = 2;  in tas2770_parse_dt()
644 	tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);  in tas2770_parse_dt()
645 	if (IS_ERR(tas2770->sdz_gpio)) {  in tas2770_parse_dt()
646 		if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER)  in tas2770_parse_dt()
649 		tas2770->sdz_gpio = NULL;  in tas2770_parse_dt()
657 	struct tas2770_priv *tas2770;  in tas2770_i2c_probe()  local
660 	tas2770 = devm_kzalloc(&client->dev, sizeof(struct tas2770_priv),  in tas2770_i2c_probe()
662 	if (!tas2770)  in tas2770_i2c_probe()
665 	tas2770->dev = &client->dev;  in tas2770_i2c_probe()
666 	i2c_set_clientdata(client, tas2770);  in tas2770_i2c_probe()
667 	dev_set_drvdata(&client->dev, tas2770);  in tas2770_i2c_probe()
669 	tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);  in tas2770_i2c_probe()
670 	if (IS_ERR(tas2770->regmap)) {  in tas2770_i2c_probe()
671 		result = PTR_ERR(tas2770->regmap);  in tas2770_i2c_probe()
678 		result = tas2770_parse_dt(&client->dev, tas2770);  in tas2770_i2c_probe()
680 			dev_err(tas2770->dev, "%s: Failed to parse devicetree\n",  in tas2770_i2c_probe()
686 	tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset",  in tas2770_i2c_probe()
688 	if (IS_ERR(tas2770->reset_gpio)) {  in tas2770_i2c_probe()
689 		if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {  in tas2770_i2c_probe()
690 			tas2770->reset_gpio = NULL;  in tas2770_i2c_probe()
695 	result = tas2770_register_codec(tas2770);  in tas2770_i2c_probe()
697 		dev_err(tas2770->dev, "Register codec failed.\n");  in tas2770_i2c_probe()
703 	{ "tas2770"},
710 	{ .compatible = "ti,tas2770" },
718 		.name   = "tas2770",
727 MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver");