1 // SPDX-License-Identifier: GPL-2.0 2 // 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 15 16 #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 6 20 #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 0 24 25 #define AIU_ACODEC_OUT_CHMAX 2 26 27 static const char * const aiu_acodec_ctrl_mux_texts[] = { 28 "DISABLED", "I2S", "PCM", 29 }; 30 31 static 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 64 static 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 68 static 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 73 static 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 77 static 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 84 static 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 } 104 105 static const struct snd_soc_dai_ops aiu_acodec_ctrl_input_ops = { 106 .hw_params = aiu_acodec_ctrl_input_hw_params, 107 .set_fmt = meson_codec_glue_input_set_fmt, 108 }; 109 110 static const struct snd_soc_dai_ops aiu_acodec_ctrl_output_ops = { 111 .startup = meson_codec_glue_output_startup, 112 }; 113 114 #define AIU_ACODEC_CTRL_FORMATS \ 115 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 116 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \ 117 SNDRV_PCM_FMTBIT_S32_LE) 118 119 #define AIU_ACODEC_STREAM(xname, xsuffix, xchmax) \ 120 { \ 121 .stream_name = xname " " xsuffix, \ 122 .channels_min = 1, \ 123 .channels_max = (xchmax), \ 124 .rate_min = 5512, \ 125 .rate_max = 192000, \ 126 .formats = AIU_ACODEC_CTRL_FORMATS, \ 127 } 128 129 #define AIU_ACODEC_INPUT(xname) { \ 130 .name = "ACODEC CTRL " xname, \ 131 .playback = AIU_ACODEC_STREAM(xname, "Playback", 8), \ 132 .ops = &aiu_acodec_ctrl_input_ops, \ 133 .probe = meson_codec_glue_input_dai_probe, \ 134 .remove = meson_codec_glue_input_dai_remove, \ 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 } 142 143 static 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 }; 148 149 static 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 }; 155 156 static 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 }; 160 161 static 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 } 167 168 static int aiu_acodec_ctrl_component_probe(struct snd_soc_component *component) 169 { 170 /* 171 * NOTE: Din Skew setting 172 * According to the documentation, the following update adds one delay 173 * to the din line. Without this, the output saturates. This happens 174 * regardless of the link format (i2s or left_j) so it is not clear what 175 * it actually does but it seems to be required 176 */ 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 } 183 184 static 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 .non_legacy_dai_naming = 1, 196 #ifdef CONFIG_DEBUG_FS 197 .debugfs_prefix = "acodec", 198 #endif 199 }; 200 201 int aiu_acodec_ctrl_register_component(struct device *dev) 202 { 203 return snd_soc_register_component(dev, &aiu_acodec_ctrl_component, 204 aiu_acodec_ctrl_dai_drv, 205 ARRAY_SIZE(aiu_acodec_ctrl_dai_drv)); 206 } 207