2  * CS4270 ALSA SoC (ASoC) codec driver
11  * This is an ASoC device driver for the Cirrus Logic CS4270 codec.
39 /* CS4270 registers addresses */
54 /* Bit masks for the CS4270 registers */
121 /* Private data for the CS4270 */
160  * The data for this chart is taken from Table 5 of the CS4270 reference
165  * rates the CS4270 currently supports.
175  * double-speed instead of quad-speed.  However, the CS4270 errata states
179  * Errata: There is an errata for the CS4270 where divide-by-1.5 does not
204 /* The number of MCLK/LRCK ratios supported by the CS4270 */
222  * cs4270_set_dai_sysclk - determine the CS4270 samples rates.
232  * by the CS4270.  The ratio of MCLK / Fs must be equal to one of nine
252 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_set_dai_sysclk()  local
254 	cs4270->mclk = freq;  in cs4270_set_dai_sysclk()
267  * SND_SOC_DAIFMT_LEFT_J.  The CS4270 codec also supports right-justified
275 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_set_dai_fmt()  local
281 		cs4270->mode = format & SND_SOC_DAIFMT_FORMAT_MASK;  in cs4270_set_dai_fmt()
291 		cs4270->slave_mode = 1;  in cs4270_set_dai_fmt()
294 		cs4270->slave_mode = 0;  in cs4270_set_dai_fmt()
306  * cs4270_hw_params - program the CS4270 with the given hardware parameters.
324 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_hw_params()  local
334 	ratio = cs4270->mclk / rate;	/* MCLK/LRCK ratio */  in cs4270_hw_params()
353 	if (cs4270->slave_mode)  in cs4270_hw_params()
369 	switch (cs4270->mode) {  in cs4270_hw_params()
391  * cs4270_dai_mute - enable/disable the CS4270 external mute
396  * This function toggles the mute bits in the MUTE register.  The CS4270's
404 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_dai_mute()  local
413 		reg6 |= cs4270->manual_mute;  in cs4270_dai_mute()
437 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_soc_put_mute()  local
441 	cs4270->manual_mute = (left ? CS4270_MUTE_DAC_A : 0) |  in cs4270_soc_put_mute()
447 /* A list of non-DAPM controls that the CS4270 supports */
471 	.name = "cs4270-hifi",
502 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_probe()  local
528 	ret = regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies),  in cs4270_probe()
529 				    cs4270->supplies);  in cs4270_probe()
542 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_remove()  local
544 	regulator_bulk_disable(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);  in cs4270_remove()
560 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_soc_suspend()  local
571 	regulator_bulk_disable(ARRAY_SIZE(cs4270->supplies),  in cs4270_soc_suspend()
572 			       cs4270->supplies);  in cs4270_soc_suspend()
579 	struct cs4270_private *cs4270 = snd_soc_component_get_drvdata(component);  in cs4270_soc_resume()  local
582 	ret = regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies),  in cs4270_soc_resume()
583 				    cs4270->supplies);  in cs4270_soc_resume()
592 	regcache_sync(cs4270->regmap);  in cs4270_soc_resume()
628 	{ .compatible = "cirrus,cs4270", },
647  * cs4270_i2c_remove - deinitialize the I2C interface of the CS4270
655 	struct cs4270_private *cs4270 = i2c_get_clientdata(i2c_client);  in cs4270_i2c_remove()  local
657 	gpiod_set_value_cansleep(cs4270->reset_gpio, 0);  in cs4270_i2c_remove()
661  * cs4270_i2c_probe - initialize the I2C interface of the CS4270
669 	struct cs4270_private *cs4270;  in cs4270_i2c_probe()  local
673 	cs4270 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4270_private),  in cs4270_i2c_probe()
675 	if (!cs4270)  in cs4270_i2c_probe()
680 		cs4270->supplies[i].supply = supply_names[i];  in cs4270_i2c_probe()
683 				      ARRAY_SIZE(cs4270->supplies),  in cs4270_i2c_probe()
684 				      cs4270->supplies);  in cs4270_i2c_probe()
689 	cs4270->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev, "reset",  in cs4270_i2c_probe()
691 	if (IS_ERR(cs4270->reset_gpio)) {  in cs4270_i2c_probe()
692 		dev_dbg(&i2c_client->dev, "Error getting CS4270 reset GPIO\n");  in cs4270_i2c_probe()
693 		return PTR_ERR(cs4270->reset_gpio);  in cs4270_i2c_probe()
696 	if (cs4270->reset_gpio) {  in cs4270_i2c_probe()
698 		gpiod_set_value_cansleep(cs4270->reset_gpio, 1);  in cs4270_i2c_probe()
704 	cs4270->regmap = devm_regmap_init_i2c(i2c_client, &cs4270_regmap);  in cs4270_i2c_probe()
705 	if (IS_ERR(cs4270->regmap))  in cs4270_i2c_probe()
706 		return PTR_ERR(cs4270->regmap);  in cs4270_i2c_probe()
708 	/* Verify that we have a CS4270 */  in cs4270_i2c_probe()
709 	ret = regmap_read(cs4270->regmap, CS4270_CHIPID, &val);  in cs4270_i2c_probe()
717 		dev_err(&i2c_client->dev, "device at addr %X is not a CS4270\n",  in cs4270_i2c_probe()
726 	i2c_set_clientdata(i2c_client, cs4270);  in cs4270_i2c_probe()
737 	{"cs4270"},
750 		.name = "cs4270",
761 MODULE_DESCRIPTION("Cirrus Logic CS4270 ALSA SoC Codec Driver");