1 // SPDX-License-Identifier: GPL-2.0-only
3  * wm8940.c  --  WM8940 ALSA Soc Audio driver
14  * No means to obtain current gain if alc enabled.
141 	{ 0x2d, 0x0050 }, /* PGA Gain */
153 static const char *wm8940_companding[] = { "Off", "NC", "u-law", "A-law" };
171 static DECLARE_TLV_DB_SCALE(wm8940_spk_vol_tlv, -5700, 100, 1);
172 static DECLARE_TLV_DB_SCALE(wm8940_att_tlv, -1000, 1000, 0);
173 static DECLARE_TLV_DB_SCALE(wm8940_pga_vol_tlv, -1200, 75, 0);
174 static DECLARE_TLV_DB_SCALE(wm8940_alc_min_tlv, -1200, 600, 0);
176 static DECLARE_TLV_DB_SCALE(wm8940_alc_tar_tlv, -2250, 50, 0);
178 static DECLARE_TLV_DB_SCALE(wm8940_lim_thresh_tlv, -600, 100, 0);
179 static DECLARE_TLV_DB_SCALE(wm8940_adc_tlv, -12750, 50, 1);
190 	SOC_SINGLE_TLV("ALC Capture Max Gain", WM8940_ALC1,
192 	SOC_SINGLE_TLV("ALC Capture Min Gain", WM8940_ALC1,
213 	SOC_SINGLE("Capture PGA ZC Switch", WM8940_PGAGAIN, 7, 1, 0),
214 	SOC_SINGLE_TLV("Capture PGA Volume", WM8940_PGAGAIN,
256 static DECLARE_TLV_DB_SCALE(wm8940_boost_vol_tlv, -1500, 300, 1);
258 	SOC_DAPM_SINGLE("Mic PGA Switch", WM8940_PGAGAIN, 6, 1, 1),
289 	SND_SOC_DAPM_MIXER("Mic PGA", WM8940_POWER2, 2, 0,
321 	/*  Microphone PGA */
322 	{"Mic PGA", "MICN Switch", "MICN"},
323 	{"Mic PGA", "MICP Switch", "MICP"},
324 	{"Mic PGA", "AUX Switch", "AUX"},
327 	{"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
339 	struct snd_soc_component *component = codec_dai->component;  in wm8940_set_dai_fmt()
350 		return -EINVAL;  in wm8940_set_dai_fmt()
394 	struct snd_soc_component *component = dai->component;  in wm8940_i2s_hw_params()
402 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE  in wm8940_i2s_hw_params()
457 	struct snd_soc_component *component = dai->component;  in wm8940_mute()
493 			ret = regcache_sync(wm8940->regmap);  in wm8940_set_bias_level()
495 				dev_err(component->dev, "Failed to sync cache: %d\n", ret);  in wm8940_set_bias_level()
576 	struct snd_soc_component *component = codec_dai->component;  in wm8940_set_dai_pll()
617 	struct snd_soc_component *component = codec_dai->component;  in wm8940_set_dai_sysclk()
626 		wm8940->sysclk = freq;  in wm8940_set_dai_sysclk()
629 	return -EINVAL;  in wm8940_set_dai_sysclk()
635 	struct snd_soc_component *component = codec_dai->component;  in wm8940_set_dai_clkdiv()
675 	.name = "wm8940-hifi",
696 	struct wm8940_setup_data *pdata = component->dev->platform_data;  in wm8940_probe()
702 		dev_err(component->dev, "Failed to issue reset\n");  in wm8940_probe()
713 		dev_warn(component->dev, "No platform data supplied\n");  in wm8940_probe()
716 		ret = snd_soc_component_write(component, WM8940_OUTPUTCTL, reg | pdata->vroi);  in wm8940_probe()
759 	wm8940 = devm_kzalloc(&i2c->dev, sizeof(struct wm8940_priv),  in wm8940_i2c_probe()
762 		return -ENOMEM;  in wm8940_i2c_probe()
764 	wm8940->regmap = devm_regmap_init_i2c(i2c, &wm8940_regmap);  in wm8940_i2c_probe()
765 	if (IS_ERR(wm8940->regmap))  in wm8940_i2c_probe()
766 		return PTR_ERR(wm8940->regmap);  in wm8940_i2c_probe()
770 	ret = devm_snd_soc_register_component(&i2c->dev,  in wm8940_i2c_probe()