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1// SPDX-License-Identifier: GPL-2.02//3// Copyright (c) 2020 BayLibre, SAS.4// Author: Jerome Brunet <jbrunet@baylibre.com>5 6#include <linux/bitfield.h>7#include <sound/pcm_params.h>8#include <sound/soc.h>9#include <sound/soc-dai.h>10 11#include <dt-bindings/sound/meson-aiu.h>12#include "aiu.h"13#include "meson-codec-glue.h"14 15#define CTRL_DIN_EN 1516#define CTRL_CLK_INV BIT(14)17#define CTRL_LRCLK_INV BIT(13)18#define CTRL_I2S_IN_BCLK_SRC BIT(11)19#define CTRL_DIN_LRCLK_SRC_SHIFT 620#define CTRL_DIN_LRCLK_SRC (0x3 << CTRL_DIN_LRCLK_SRC_SHIFT)21#define CTRL_BCLK_MCLK_SRC GENMASK(5, 4)22#define CTRL_DIN_SKEW GENMASK(3, 2)23#define CTRL_I2S_OUT_LANE_SRC 024 25#define AIU_ACODEC_OUT_CHMAX 226 27static const char * const aiu_acodec_ctrl_mux_texts[] = {28 "DISABLED", "I2S", "PCM",29};30 31static int aiu_acodec_ctrl_mux_put_enum(struct snd_kcontrol *kcontrol,32 struct snd_ctl_elem_value *ucontrol)33{34 struct snd_soc_component *component =35 snd_soc_dapm_kcontrol_component(kcontrol);36 struct snd_soc_dapm_context *dapm =37 snd_soc_dapm_kcontrol_dapm(kcontrol);38 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;39 unsigned int mux, changed;40 41 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);42 changed = snd_soc_component_test_bits(component, e->reg,43 CTRL_DIN_LRCLK_SRC,44 FIELD_PREP(CTRL_DIN_LRCLK_SRC,45 mux));46 47 if (!changed)48 return 0;49 50 /* Force disconnect of the mux while updating */51 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);52 53 snd_soc_component_update_bits(component, e->reg,54 CTRL_DIN_LRCLK_SRC |55 CTRL_BCLK_MCLK_SRC,56 FIELD_PREP(CTRL_DIN_LRCLK_SRC, mux) |57 FIELD_PREP(CTRL_BCLK_MCLK_SRC, mux));58 59 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);60 61 return 1;62}63 64static SOC_ENUM_SINGLE_DECL(aiu_acodec_ctrl_mux_enum, AIU_ACODEC_CTRL,65 CTRL_DIN_LRCLK_SRC_SHIFT,66 aiu_acodec_ctrl_mux_texts);67 68static const struct snd_kcontrol_new aiu_acodec_ctrl_mux =69 SOC_DAPM_ENUM_EXT("ACodec Source", aiu_acodec_ctrl_mux_enum,70 snd_soc_dapm_get_enum_double,71 aiu_acodec_ctrl_mux_put_enum);72 73static const struct snd_kcontrol_new aiu_acodec_ctrl_out_enable =74 SOC_DAPM_SINGLE_AUTODISABLE("Switch", AIU_ACODEC_CTRL,75 CTRL_DIN_EN, 1, 0);76 77static const struct snd_soc_dapm_widget aiu_acodec_ctrl_widgets[] = {78 SND_SOC_DAPM_MUX("ACODEC SRC", SND_SOC_NOPM, 0, 0,79 &aiu_acodec_ctrl_mux),80 SND_SOC_DAPM_SWITCH("ACODEC OUT EN", SND_SOC_NOPM, 0, 0,81 &aiu_acodec_ctrl_out_enable),82};83 84static int aiu_acodec_ctrl_input_hw_params(struct snd_pcm_substream *substream,85 struct snd_pcm_hw_params *params,86 struct snd_soc_dai *dai)87{88 struct meson_codec_glue_input *data;89 int ret;90 91 ret = meson_codec_glue_input_hw_params(substream, params, dai);92 if (ret)93 return ret;94 95 /* The glue will provide 1 lane out of the 4 to the output */96 data = meson_codec_glue_input_get_data(dai);97 data->params.channels_min = min_t(unsigned int, AIU_ACODEC_OUT_CHMAX,98 data->params.channels_min);99 data->params.channels_max = min_t(unsigned int, AIU_ACODEC_OUT_CHMAX,100 data->params.channels_max);101 102 return 0;103}104 105static const struct snd_soc_dai_ops aiu_acodec_ctrl_input_ops = {106 .probe = meson_codec_glue_input_dai_probe,107 .remove = meson_codec_glue_input_dai_remove,108 .hw_params = aiu_acodec_ctrl_input_hw_params,109 .set_fmt = meson_codec_glue_input_set_fmt,110};111 112static const struct snd_soc_dai_ops aiu_acodec_ctrl_output_ops = {113 .startup = meson_codec_glue_output_startup,114};115 116#define AIU_ACODEC_CTRL_FORMATS \117 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \118 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \119 SNDRV_PCM_FMTBIT_S32_LE)120 121#define AIU_ACODEC_STREAM(xname, xsuffix, xchmax) \122{ \123 .stream_name = xname " " xsuffix, \124 .channels_min = 1, \125 .channels_max = (xchmax), \126 .rate_min = 5512, \127 .rate_max = 192000, \128 .formats = AIU_ACODEC_CTRL_FORMATS, \129}130 131#define AIU_ACODEC_INPUT(xname) { \132 .name = "ACODEC CTRL " xname, \133 .playback = AIU_ACODEC_STREAM(xname, "Playback", 8), \134 .ops = &aiu_acodec_ctrl_input_ops, \135}136 137#define AIU_ACODEC_OUTPUT(xname) { \138 .name = "ACODEC CTRL " xname, \139 .capture = AIU_ACODEC_STREAM(xname, "Capture", AIU_ACODEC_OUT_CHMAX), \140 .ops = &aiu_acodec_ctrl_output_ops, \141}142 143static struct snd_soc_dai_driver aiu_acodec_ctrl_dai_drv[] = {144 [CTRL_I2S] = AIU_ACODEC_INPUT("ACODEC I2S IN"),145 [CTRL_PCM] = AIU_ACODEC_INPUT("ACODEC PCM IN"),146 [CTRL_OUT] = AIU_ACODEC_OUTPUT("ACODEC OUT"),147};148 149static const struct snd_soc_dapm_route aiu_acodec_ctrl_routes[] = {150 { "ACODEC SRC", "I2S", "ACODEC I2S IN Playback" },151 { "ACODEC SRC", "PCM", "ACODEC PCM IN Playback" },152 { "ACODEC OUT EN", "Switch", "ACODEC SRC" },153 { "ACODEC OUT Capture", NULL, "ACODEC OUT EN" },154};155 156static const struct snd_kcontrol_new aiu_acodec_ctrl_controls[] = {157 SOC_SINGLE("ACODEC I2S Lane Select", AIU_ACODEC_CTRL,158 CTRL_I2S_OUT_LANE_SRC, 3, 0),159};160 161static int aiu_acodec_of_xlate_dai_name(struct snd_soc_component *component,162 const struct of_phandle_args *args,163 const char **dai_name)164{165 return aiu_of_xlate_dai_name(component, args, dai_name, AIU_ACODEC);166}167 168static int aiu_acodec_ctrl_component_probe(struct snd_soc_component *component)169{170 /*171 * NOTE: Din Skew setting172 * According to the documentation, the following update adds one delay173 * to the din line. Without this, the output saturates. This happens174 * regardless of the link format (i2s or left_j) so it is not clear what175 * it actually does but it seems to be required176 */177 snd_soc_component_update_bits(component, AIU_ACODEC_CTRL,178 CTRL_DIN_SKEW,179 FIELD_PREP(CTRL_DIN_SKEW, 2));180 181 return 0;182}183 184static const struct snd_soc_component_driver aiu_acodec_ctrl_component = {185 .name = "AIU Internal DAC Codec Control",186 .probe = aiu_acodec_ctrl_component_probe,187 .controls = aiu_acodec_ctrl_controls,188 .num_controls = ARRAY_SIZE(aiu_acodec_ctrl_controls),189 .dapm_widgets = aiu_acodec_ctrl_widgets,190 .num_dapm_widgets = ARRAY_SIZE(aiu_acodec_ctrl_widgets),191 .dapm_routes = aiu_acodec_ctrl_routes,192 .num_dapm_routes = ARRAY_SIZE(aiu_acodec_ctrl_routes),193 .of_xlate_dai_name = aiu_acodec_of_xlate_dai_name,194 .endianness = 1,195#ifdef CONFIG_DEBUG_FS196 .debugfs_prefix = "acodec",197#endif198};199 200int aiu_acodec_ctrl_register_component(struct device *dev)201{202 return snd_soc_register_component(dev, &aiu_acodec_ctrl_component,203 aiu_acodec_ctrl_dai_drv,204 ARRAY_SIZE(aiu_acodec_ctrl_dai_drv));205}206