1 // SPDX-License-Identifier: GPL-2.0
3 * MediaTek ALSA SoC Audio DAI PCM I/F Control
5 * Copyright (c) 2020 MediaTek Inc.
6 * Author: Bicycle Tsai <bicycle.tsai@mediatek.com>
7 * Trevor Wu <trevor.wu@mediatek.com>
10 #include <linux/regmap.h>
11 #include <sound/pcm_params.h>
12 #include "mt8195-afe-clk.h"
13 #include "mt8195-afe-common.h"
14 #include "mt8195-reg.h"
19 MTK_DAI_PCM_FMT_MODEA,
20 MTK_DAI_PCM_FMT_MODEB,
24 MTK_DAI_PCM_CLK_A1SYS,
25 MTK_DAI_PCM_CLK_A2SYS,
26 MTK_DAI_PCM_CLK_26M_48K,
27 MTK_DAI_PCM_CLK_26M_441K,
30 struct mtk_dai_pcm_rate {
32 unsigned int reg_value;
35 struct mtk_dai_pcmif_priv {
36 unsigned int slave_mode;
37 unsigned int lrck_inv;
42 static const struct mtk_dai_pcm_rate mtk_dai_pcm_rates[] = {
43 { .rate = 8000, .reg_value = 0, },
44 { .rate = 16000, .reg_value = 1, },
45 { .rate = 32000, .reg_value = 2, },
46 { .rate = 48000, .reg_value = 3, },
47 { .rate = 11025, .reg_value = 1, },
48 { .rate = 22050, .reg_value = 2, },
49 { .rate = 44100, .reg_value = 3, },
52 static int mtk_dai_pcm_mode(unsigned int rate)
56 for (i = 0; i < ARRAY_SIZE(mtk_dai_pcm_rates); i++)
57 if (mtk_dai_pcm_rates[i].rate == rate)
58 return mtk_dai_pcm_rates[i].reg_value;
63 static const struct snd_kcontrol_new mtk_dai_pcm_o000_mix[] = {
64 SOC_DAPM_SINGLE_AUTODISABLE("I000 Switch", AFE_CONN0, 0, 1, 0),
65 SOC_DAPM_SINGLE_AUTODISABLE("I070 Switch", AFE_CONN0_2, 6, 1, 0),
68 static const struct snd_kcontrol_new mtk_dai_pcm_o001_mix[] = {
69 SOC_DAPM_SINGLE_AUTODISABLE("I001 Switch", AFE_CONN1, 1, 1, 0),
70 SOC_DAPM_SINGLE_AUTODISABLE("I071 Switch", AFE_CONN1_2, 7, 1, 0),
73 static const struct snd_soc_dapm_widget mtk_dai_pcm_widgets[] = {
74 SND_SOC_DAPM_MIXER("I002", SND_SOC_NOPM, 0, 0, NULL, 0),
75 SND_SOC_DAPM_MIXER("I003", SND_SOC_NOPM, 0, 0, NULL, 0),
76 SND_SOC_DAPM_MIXER("O000", SND_SOC_NOPM, 0, 0,
78 ARRAY_SIZE(mtk_dai_pcm_o000_mix)),
79 SND_SOC_DAPM_MIXER("O001", SND_SOC_NOPM, 0, 0,
81 ARRAY_SIZE(mtk_dai_pcm_o001_mix)),
83 SND_SOC_DAPM_SUPPLY("PCM_EN", PCM_INTF_CON1,
84 PCM_INTF_CON1_PCM_EN_SHIFT, 0, NULL, 0),
86 SND_SOC_DAPM_INPUT("PCM1_INPUT"),
87 SND_SOC_DAPM_OUTPUT("PCM1_OUTPUT"),
89 SND_SOC_DAPM_CLOCK_SUPPLY("aud_asrc11"),
90 SND_SOC_DAPM_CLOCK_SUPPLY("aud_asrc12"),
91 SND_SOC_DAPM_CLOCK_SUPPLY("aud_pcmif"),
94 static const struct snd_soc_dapm_route mtk_dai_pcm_routes[] = {
95 {"I002", NULL, "PCM1 Capture"},
96 {"I003", NULL, "PCM1 Capture"},
98 {"O000", "I000 Switch", "I000"},
99 {"O001", "I001 Switch", "I001"},
101 {"O000", "I070 Switch", "I070"},
102 {"O001", "I071 Switch", "I071"},
104 {"PCM1 Playback", NULL, "O000"},
105 {"PCM1 Playback", NULL, "O001"},
107 {"PCM1 Playback", NULL, "PCM_EN"},
108 {"PCM1 Playback", NULL, "aud_asrc12"},
109 {"PCM1 Playback", NULL, "aud_pcmif"},
111 {"PCM1 Capture", NULL, "PCM_EN"},
112 {"PCM1 Capture", NULL, "aud_asrc11"},
113 {"PCM1 Capture", NULL, "aud_pcmif"},
115 {"PCM1_OUTPUT", NULL, "PCM1 Playback"},
116 {"PCM1 Capture", NULL, "PCM1_INPUT"},
119 static int mtk_dai_pcm_configure(struct snd_pcm_substream *substream,
120 struct snd_soc_dai *dai)
122 struct snd_pcm_runtime * const runtime = substream->runtime;
123 struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
124 struct mt8195_afe_private *afe_priv = afe->platform_priv;
125 struct mtk_dai_pcmif_priv *pcmif_priv = afe_priv->dai_priv[dai->id];
126 unsigned int slave_mode = pcmif_priv->slave_mode;
127 unsigned int lrck_inv = pcmif_priv->lrck_inv;
128 unsigned int bck_inv = pcmif_priv->bck_inv;
129 unsigned int fmt = pcmif_priv->format;
130 unsigned int bit_width = dai->sample_bits;
131 unsigned int val = 0;
132 unsigned int mask = 0;
137 fs = mt8195_afe_fs_timing(runtime->rate);
140 val |= PCM_INTF_CON2_SYNC_FREQ_MODE(fs);
141 mask |= PCM_INTF_CON2_SYNC_FREQ_MODE_MASK;
144 if (runtime->rate % 8000)
145 val |= PCM_INTF_CON2_CLK_DOMAIN_SEL(MTK_DAI_PCM_CLK_26M_441K);
147 val |= PCM_INTF_CON2_CLK_DOMAIN_SEL(MTK_DAI_PCM_CLK_26M_48K);
148 mask |= PCM_INTF_CON2_CLK_DOMAIN_SEL_MASK;
150 regmap_update_bits(afe->regmap, PCM_INTF_CON2, mask, val);
156 mode = mtk_dai_pcm_mode(runtime->rate);
159 val |= PCM_INTF_CON1_PCM_MODE(mode);
160 mask |= PCM_INTF_CON1_PCM_MODE_MASK;
163 val |= PCM_INTF_CON1_PCM_FMT(fmt);
164 mask |= PCM_INTF_CON1_PCM_FMT_MASK;
166 /* pcm sync length */
167 if (fmt == MTK_DAI_PCM_FMT_MODEA ||
168 fmt == MTK_DAI_PCM_FMT_MODEB)
169 val |= PCM_INTF_CON1_SYNC_LENGTH(1);
171 val |= PCM_INTF_CON1_SYNC_LENGTH(bit_width);
172 mask |= PCM_INTF_CON1_SYNC_LENGTH_MASK;
174 /* pcm bits, word length */
175 if (bit_width > 16) {
176 val |= PCM_INTF_CON1_PCM_24BIT;
177 val |= PCM_INTF_CON1_PCM_WLEN_64BCK;
179 val |= PCM_INTF_CON1_PCM_16BIT;
180 val |= PCM_INTF_CON1_PCM_WLEN_32BCK;
182 mask |= PCM_INTF_CON1_PCM_BIT_MASK;
183 mask |= PCM_INTF_CON1_PCM_WLEN_MASK;
187 val |= PCM_INTF_CON1_PCM_MASTER;
190 val |= PCM_INTF_CON1_SYNC_OUT_INV;
192 val |= PCM_INTF_CON1_BCLK_OUT_INV;
193 mask |= PCM_INTF_CON1_CLK_OUT_INV_MASK;
195 val |= PCM_INTF_CON1_PCM_SLAVE;
198 val |= PCM_INTF_CON1_SYNC_IN_INV;
200 val |= PCM_INTF_CON1_BCLK_IN_INV;
201 mask |= PCM_INTF_CON1_CLK_IN_INV_MASK;
203 /* TODO: add asrc setting for slave mode */
205 mask |= PCM_INTF_CON1_PCM_M_S_MASK;
207 regmap_update_bits(afe->regmap, PCM_INTF_CON1, mask, val);
213 static int mtk_dai_pcm_prepare(struct snd_pcm_substream *substream,
214 struct snd_soc_dai *dai)
218 dev_dbg(dai->dev, "%s(), id %d, stream %d, widget active p %d, c %d\n",
219 __func__, dai->id, substream->stream,
220 dai->playback_widget->active, dai->capture_widget->active);
222 if (dai->playback_widget->active || dai->capture_widget->active)
225 ret = mtk_dai_pcm_configure(substream, dai);
232 static int mtk_dai_pcm_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
234 struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
235 struct mt8195_afe_private *afe_priv = afe->platform_priv;
236 struct mtk_dai_pcmif_priv *pcmif_priv = afe_priv->dai_priv[dai->id];
238 dev_dbg(dai->dev, "%s fmt 0x%x\n", __func__, fmt);
240 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
241 case SND_SOC_DAIFMT_I2S:
242 pcmif_priv->format = MTK_DAI_PCM_FMT_I2S;
244 case SND_SOC_DAIFMT_DSP_A:
245 pcmif_priv->format = MTK_DAI_PCM_FMT_MODEA;
247 case SND_SOC_DAIFMT_DSP_B:
248 pcmif_priv->format = MTK_DAI_PCM_FMT_MODEB;
254 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
255 case SND_SOC_DAIFMT_NB_NF:
256 pcmif_priv->bck_inv = 0;
257 pcmif_priv->lrck_inv = 0;
259 case SND_SOC_DAIFMT_NB_IF:
260 pcmif_priv->bck_inv = 0;
261 pcmif_priv->lrck_inv = 1;
263 case SND_SOC_DAIFMT_IB_NF:
264 pcmif_priv->bck_inv = 1;
265 pcmif_priv->lrck_inv = 0;
267 case SND_SOC_DAIFMT_IB_IF:
268 pcmif_priv->bck_inv = 1;
269 pcmif_priv->lrck_inv = 1;
275 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
276 case SND_SOC_DAIFMT_CBM_CFM:
277 pcmif_priv->slave_mode = 1;
279 case SND_SOC_DAIFMT_CBS_CFS:
280 pcmif_priv->slave_mode = 0;
289 static const struct snd_soc_dai_ops mtk_dai_pcm_ops = {
290 .prepare = mtk_dai_pcm_prepare,
291 .set_fmt = mtk_dai_pcm_set_fmt,
295 #define MTK_PCM_RATES (SNDRV_PCM_RATE_8000_48000)
297 #define MTK_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
298 SNDRV_PCM_FMTBIT_S24_LE |\
299 SNDRV_PCM_FMTBIT_S32_LE)
301 static struct snd_soc_dai_driver mtk_dai_pcm_driver[] = {
304 .id = MT8195_AFE_IO_PCM,
306 .stream_name = "PCM1 Playback",
309 .rates = MTK_PCM_RATES,
310 .formats = MTK_PCM_FORMATS,
313 .stream_name = "PCM1 Capture",
316 .rates = MTK_PCM_RATES,
317 .formats = MTK_PCM_FORMATS,
319 .ops = &mtk_dai_pcm_ops,
321 .symmetric_sample_bits = 1,
325 static int init_pcmif_priv_data(struct mtk_base_afe *afe)
327 struct mt8195_afe_private *afe_priv = afe->platform_priv;
328 struct mtk_dai_pcmif_priv *pcmif_priv;
330 pcmif_priv = devm_kzalloc(afe->dev, sizeof(struct mtk_dai_pcmif_priv),
335 afe_priv->dai_priv[MT8195_AFE_IO_PCM] = pcmif_priv;
339 int mt8195_dai_pcm_register(struct mtk_base_afe *afe)
341 struct mtk_base_afe_dai *dai;
343 dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
347 list_add(&dai->list, &afe->sub_dais);
349 dai->dai_drivers = mtk_dai_pcm_driver;
350 dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_pcm_driver);
352 dai->dapm_widgets = mtk_dai_pcm_widgets;
353 dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_pcm_widgets);
354 dai->dapm_routes = mtk_dai_pcm_routes;
355 dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_pcm_routes);
357 return init_pcmif_priv_data(afe);