mt8186-dai-hw-gain.c

  1// SPDX-License-Identifier: GPL-2.0
  2//
  3// MediaTek ALSA SoC Audio DAI HW Gain Control
  4//
  5// Copyright (c) 2022 MediaTek Inc.
  6// Author: Jiaxin Yu <jiaxin.yu@mediatek.com>
  7
  8#include <linux/regmap.h>
  9#include "mt8186-afe-common.h"
 10#include "mt8186-interconnection.h"
 11
 12#define HW_GAIN_1_EN_W_NAME "HW GAIN 1 Enable"
 13#define HW_GAIN_2_EN_W_NAME "HW GAIN 2 Enable"
 14
 15/* dai component */
 16static const struct snd_kcontrol_new mtk_hw_gain1_in_ch1_mix[] = {
 17	SOC_DAPM_SINGLE_AUTODISABLE("CONNSYS_I2S_CH1 Switch", AFE_CONN13_1,
 18				    I_CONNSYS_I2S_CH1, 1, 0),
 19};
 20
 21static const struct snd_kcontrol_new mtk_hw_gain1_in_ch2_mix[] = {
 22	SOC_DAPM_SINGLE_AUTODISABLE("CONNSYS_I2S_CH2 Switch", AFE_CONN14_1,
 23				    I_CONNSYS_I2S_CH2, 1, 0),
 24};
 25
 26static const struct snd_kcontrol_new mtk_hw_gain2_in_ch1_mix[] = {
 27	SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1 Switch", AFE_CONN15,
 28				    I_ADDA_UL_CH1, 1, 0),
 29};
 30
 31static const struct snd_kcontrol_new mtk_hw_gain2_in_ch2_mix[] = {
 32	SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2 Switch", AFE_CONN16,
 33				    I_ADDA_UL_CH2, 1, 0),
 34};
 35
 36static int mtk_hw_gain_event(struct snd_soc_dapm_widget *w,
 37			     struct snd_kcontrol *kcontrol,
 38			     int event)
 39{
 40	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
 41	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
 42	unsigned int gain_cur;
 43	unsigned int gain_con1;
 44
 45	dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x\n",
 46		__func__, w->name, event);
 47
 48	switch (event) {
 49	case SND_SOC_DAPM_PRE_PMU:
 50		if (snd_soc_dapm_widget_name_cmp(w, HW_GAIN_1_EN_W_NAME) == 0) {
 51			gain_cur = AFE_GAIN1_CUR;
 52			gain_con1 = AFE_GAIN1_CON1;
 53		} else {
 54			gain_cur = AFE_GAIN2_CUR;
 55			gain_con1 = AFE_GAIN2_CON1;
 56		}
 57
 58		/* let hw gain ramp up, set cur gain to 0 */
 59		regmap_update_bits(afe->regmap, gain_cur, AFE_GAIN1_CUR_MASK_SFT, 0);
 60
 61		/* set target gain to 0 */
 62		regmap_update_bits(afe->regmap, gain_con1, GAIN1_TARGET_MASK_SFT, 0);
 63		break;
 64	default:
 65		break;
 66	}
 67
 68	return 0;
 69}
 70
 71static const struct snd_soc_dapm_widget mtk_dai_hw_gain_widgets[] = {
 72	/* inter-connections */
 73	SND_SOC_DAPM_MIXER("HW_GAIN1_IN_CH1", SND_SOC_NOPM, 0, 0,
 74			   mtk_hw_gain1_in_ch1_mix,
 75			   ARRAY_SIZE(mtk_hw_gain1_in_ch1_mix)),
 76	SND_SOC_DAPM_MIXER("HW_GAIN1_IN_CH2", SND_SOC_NOPM, 0, 0,
 77			   mtk_hw_gain1_in_ch2_mix,
 78			   ARRAY_SIZE(mtk_hw_gain1_in_ch2_mix)),
 79	SND_SOC_DAPM_MIXER("HW_GAIN2_IN_CH1", SND_SOC_NOPM, 0, 0,
 80			   mtk_hw_gain2_in_ch1_mix,
 81			   ARRAY_SIZE(mtk_hw_gain2_in_ch1_mix)),
 82	SND_SOC_DAPM_MIXER("HW_GAIN2_IN_CH2", SND_SOC_NOPM, 0, 0,
 83			   mtk_hw_gain2_in_ch2_mix,
 84			   ARRAY_SIZE(mtk_hw_gain2_in_ch2_mix)),
 85
 86	SND_SOC_DAPM_SUPPLY(HW_GAIN_1_EN_W_NAME,
 87			    AFE_GAIN1_CON0, GAIN1_ON_SFT, 0,
 88			    mtk_hw_gain_event,
 89			    SND_SOC_DAPM_PRE_PMU),
 90
 91	SND_SOC_DAPM_SUPPLY(HW_GAIN_2_EN_W_NAME,
 92			    AFE_GAIN2_CON0, GAIN2_ON_SFT, 0,
 93			    mtk_hw_gain_event,
 94			    SND_SOC_DAPM_PRE_PMU),
 95
 96	SND_SOC_DAPM_INPUT("HW Gain 1 Out Endpoint"),
 97	SND_SOC_DAPM_INPUT("HW Gain 2 Out Endpoint"),
 98	SND_SOC_DAPM_OUTPUT("HW Gain 1 In Endpoint"),
 99};
100
101static const struct snd_soc_dapm_route mtk_dai_hw_gain_routes[] = {
102	{"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH1"},
103	{"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH2"},
104	{"HW Gain 2 In", NULL, "HW_GAIN2_IN_CH1"},
105	{"HW Gain 2 In", NULL, "HW_GAIN2_IN_CH2"},
106
107	{"HW Gain 1 In", NULL, HW_GAIN_1_EN_W_NAME},
108	{"HW Gain 1 Out", NULL, HW_GAIN_1_EN_W_NAME},
109	{"HW Gain 2 In", NULL, HW_GAIN_2_EN_W_NAME},
110	{"HW Gain 2 Out", NULL, HW_GAIN_2_EN_W_NAME},
111
112	{"HW Gain 1 In Endpoint", NULL, "HW Gain 1 In"},
113	{"HW Gain 1 Out", NULL, "HW Gain 1 Out Endpoint"},
114	{"HW Gain 2 Out", NULL, "HW Gain 2 Out Endpoint"},
115};
116
117static const struct snd_kcontrol_new mtk_hw_gain_controls[] = {
118	SOC_SINGLE("HW Gain 1 Volume", AFE_GAIN1_CON1,
119		   GAIN1_TARGET_SFT, GAIN1_TARGET_MASK, 0),
120	SOC_SINGLE("HW Gain 2 Volume", AFE_GAIN2_CON1,
121		   GAIN2_TARGET_SFT, GAIN2_TARGET_MASK, 0),
122};
123
124/* dai ops */
125static int mtk_dai_gain_hw_params(struct snd_pcm_substream *substream,
126				  struct snd_pcm_hw_params *params,
127				  struct snd_soc_dai *dai)
128{
129	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
130	unsigned int rate = params_rate(params);
131	unsigned int rate_reg = mt8186_rate_transform(afe->dev, rate, dai->id);
132
133	dev_dbg(afe->dev, "%s(), id %d, stream %d, rate %d\n",
134		__func__, dai->id, substream->stream, rate);
135
136	/* rate */
137	regmap_update_bits(afe->regmap,
138			   dai->id == MT8186_DAI_HW_GAIN_1 ?
139			   AFE_GAIN1_CON0 : AFE_GAIN2_CON0,
140			   GAIN1_MODE_MASK_SFT,
141			   rate_reg << GAIN1_MODE_SFT);
142
143	/* sample per step */
144	regmap_update_bits(afe->regmap,
145			   dai->id == MT8186_DAI_HW_GAIN_1 ?
146			   AFE_GAIN1_CON0 : AFE_GAIN2_CON0,
147			   GAIN1_SAMPLE_PER_STEP_MASK_SFT,
148			   (dai->id == MT8186_DAI_HW_GAIN_1 ? 0x40 : 0x0) <<
149			   GAIN1_SAMPLE_PER_STEP_SFT);
150
151	return 0;
152}
153
154static const struct snd_soc_dai_ops mtk_dai_gain_ops = {
155	.hw_params = mtk_dai_gain_hw_params,
156};
157
158/* dai driver */
159#define MTK_HW_GAIN_RATES (SNDRV_PCM_RATE_8000_48000 |\
160			   SNDRV_PCM_RATE_88200 |\
161			   SNDRV_PCM_RATE_96000 |\
162			   SNDRV_PCM_RATE_176400 |\
163			   SNDRV_PCM_RATE_192000)
164
165#define MTK_HW_GAIN_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
166			     SNDRV_PCM_FMTBIT_S24_LE |\
167			     SNDRV_PCM_FMTBIT_S32_LE)
168
169static struct snd_soc_dai_driver mtk_dai_gain_driver[] = {
170	{
171		.name = "HW Gain 1",
172		.id = MT8186_DAI_HW_GAIN_1,
173		.playback = {
174			.stream_name = "HW Gain 1 In",
175			.channels_min = 1,
176			.channels_max = 2,
177			.rates = MTK_HW_GAIN_RATES,
178			.formats = MTK_HW_GAIN_FORMATS,
179		},
180		.capture = {
181			.stream_name = "HW Gain 1 Out",
182			.channels_min = 1,
183			.channels_max = 2,
184			.rates = MTK_HW_GAIN_RATES,
185			.formats = MTK_HW_GAIN_FORMATS,
186		},
187		.ops = &mtk_dai_gain_ops,
188		.symmetric_rate = 1,
189		.symmetric_channels = 1,
190		.symmetric_sample_bits = 1,
191	},
192	{
193		.name = "HW Gain 2",
194		.id = MT8186_DAI_HW_GAIN_2,
195		.playback = {
196			.stream_name = "HW Gain 2 In",
197			.channels_min = 1,
198			.channels_max = 2,
199			.rates = MTK_HW_GAIN_RATES,
200			.formats = MTK_HW_GAIN_FORMATS,
201		},
202		.capture = {
203			.stream_name = "HW Gain 2 Out",
204			.channels_min = 1,
205			.channels_max = 2,
206			.rates = MTK_HW_GAIN_RATES,
207			.formats = MTK_HW_GAIN_FORMATS,
208		},
209		.ops = &mtk_dai_gain_ops,
210		.symmetric_rate = 1,
211		.symmetric_channels = 1,
212		.symmetric_sample_bits = 1,
213	},
214};
215
216int mt8186_dai_hw_gain_register(struct mtk_base_afe *afe)
217{
218	struct mtk_base_afe_dai *dai;
219
220	dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
221	if (!dai)
222		return -ENOMEM;
223
224	list_add(&dai->list, &afe->sub_dais);
225
226	dai->dai_drivers = mtk_dai_gain_driver;
227	dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_gain_driver);
228
229	dai->controls = mtk_hw_gain_controls;
230	dai->num_controls = ARRAY_SIZE(mtk_hw_gain_controls);
231	dai->dapm_widgets = mtk_dai_hw_gain_widgets;
232	dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_hw_gain_widgets);
233	dai->dapm_routes = mtk_dai_hw_gain_routes;
234	dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_hw_gain_routes);
235	return 0;
236}