1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/reset.h>
16 #include <linux/clk-provider.h>
23 #include <sound/soc-component.h>
62 	struct reset_control *reset;  member
66 static const DECLARE_TLV_DB_SCALE(ntp8918_master_vol_scale, -12550, 50, 0);
78 	 * /RESET signal low during power up for at least 0.1us. The sequence is,  in ntp8918_reset_gpio()
80 	 * Deassert for T2 >= 1ms...  in ntp8918_reset_gpio()
82 	reset_control_deassert(ntp8918->reset);  in ntp8918_reset_gpio()
85 	/* ...Assert for T3 >= 0.1us... */  in ntp8918_reset_gpio()
86 	reset_control_assert(ntp8918->reset);  in ntp8918_reset_gpio()
89 	/* ...Deassert, and wait for T4 >= 0.5ms before sound on sequence. */  in ntp8918_reset_gpio()
90 	reset_control_deassert(ntp8918->reset);  in ntp8918_reset_gpio()
106 	ret = ntpfw_load(ntp8918->i2c, NTP8918_FW_NAME, NTP8918_FW_MAGIC);  in ntp8918_load_firmware()
107 	if (ret == -ENOENT) {  in ntp8918_load_firmware()
108 		dev_warn_once(&ntp8918->i2c->dev, "Could not find firmware %s\n",  in ntp8918_load_firmware()
120 	regcache_cache_only(component->regmap, true);  in ntp8918_snd_suspend()
122 	regmap_multi_reg_write_bypassed(component->regmap,  in ntp8918_snd_suspend()
128 	 * wait after sound off for T6 >= 0.5ms  in ntp8918_snd_suspend()
131 	reset_control_assert(ntp8918->reset);  in ntp8918_snd_suspend()
133 	regcache_mark_dirty(component->regmap);  in ntp8918_snd_suspend()
134 	clk_disable_unprepare(ntp8918->bck);  in ntp8918_snd_suspend()
144 	ret = clk_prepare_enable(ntp8918->bck);  in ntp8918_snd_resume()
150 	regmap_multi_reg_write_bypassed(component->regmap,  in ntp8918_snd_resume()
156 		dev_err(&ntp8918->i2c->dev, "Failed to load firmware\n");  in ntp8918_snd_resume()
160 	regcache_cache_only(component->regmap, false);  in ntp8918_snd_resume()
170 	struct device *dev = component->dev;  in ntp8918_probe()
210 	struct snd_soc_component *component = dai->component;  in ntp8918_hw_params()
232 		return -EINVAL;  in ntp8918_hw_params()
240 	switch (ntp8918->format) {  in ntp8918_hw_params()
274 		return -EINVAL;  in ntp8918_hw_params()
286 	struct snd_soc_component *component = dai->component;  in ntp8918_set_fmt()
293 		ntp8918->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK;  in ntp8918_set_fmt()
296 		return -EINVAL;  in ntp8918_set_fmt()
306 	return snd_soc_component_update_bits(dai->component, NTP8918_SOFT_MUTE,  in ntp8918_digital_mute()
317 	.name = "ntp8918-amplifier",
341 	ntp8918 = devm_kzalloc(&i2c->dev, sizeof(*ntp8918), GFP_KERNEL);  in ntp8918_i2c_probe()
343 		return -ENOMEM;  in ntp8918_i2c_probe()
345 	ntp8918->i2c = i2c;  in ntp8918_i2c_probe()
347 	ntp8918->reset = devm_reset_control_get_shared(&i2c->dev, NULL);  in ntp8918_i2c_probe()
348 	if (IS_ERR(ntp8918->reset))  in ntp8918_i2c_probe()
349 		return dev_err_probe(&i2c->dev, PTR_ERR(ntp8918->reset), "Failed to get reset\n");  in ntp8918_i2c_probe()
351 	dev_set_drvdata(&i2c->dev, ntp8918);  in ntp8918_i2c_probe()
357 		return dev_err_probe(&i2c->dev, PTR_ERR(regmap),  in ntp8918_i2c_probe()
360 	ret = devm_snd_soc_register_component(&i2c->dev, &soc_component_ntp8918,  in ntp8918_i2c_probe()
363 		return dev_err_probe(&i2c->dev, ret,  in ntp8918_i2c_probe()
366 	ntp8918->bck = devm_clk_get_enabled(&i2c->dev, "bck");  in ntp8918_i2c_probe()
367 	if (IS_ERR(ntp8918->bck))  in ntp8918_i2c_probe()
368 		return dev_err_probe(&i2c->dev, PTR_ERR(ntp8918->bck), "failed to get bck clock\n");  in ntp8918_i2c_probe()