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_CLK_SEL GENMASK(1, 0) 16 #define CTRL_DATA_SEL_SHIFT 4 17 #define CTRL_DATA_SEL (0x3 << CTRL_DATA_SEL_SHIFT) 18 19 static const char * const aiu_codec_ctrl_mux_texts[] = { 20 "DISABLED", "PCM", "I2S", 21 }; 22 23 static int aiu_codec_ctrl_mux_put_enum(struct snd_kcontrol *kcontrol, 24 struct snd_ctl_elem_value *ucontrol) 25 { 26 struct snd_soc_component *component = snd_soc_dapm_kcontrol_to_component(kcontrol); 27 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_to_dapm(kcontrol); 28 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 29 unsigned int mux, changed; 30 31 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 32 changed = snd_soc_component_test_bits(component, e->reg, 33 CTRL_DATA_SEL, 34 FIELD_PREP(CTRL_DATA_SEL, mux)); 35 36 if (!changed) 37 return 0; 38 39 /* Force disconnect of the mux while updating */ 40 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 41 42 /* Reset the source first */ 43 snd_soc_component_update_bits(component, e->reg, 44 CTRL_CLK_SEL | 45 CTRL_DATA_SEL, 46 FIELD_PREP(CTRL_CLK_SEL, 0) | 47 FIELD_PREP(CTRL_DATA_SEL, 0)); 48 49 /* Set the appropriate source */ 50 snd_soc_component_update_bits(component, e->reg, 51 CTRL_CLK_SEL | 52 CTRL_DATA_SEL, 53 FIELD_PREP(CTRL_CLK_SEL, mux) | 54 FIELD_PREP(CTRL_DATA_SEL, mux)); 55 56 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 57 58 return 1; 59 } 60 61 static SOC_ENUM_SINGLE_DECL(aiu_hdmi_ctrl_mux_enum, AIU_HDMI_CLK_DATA_CTRL, 62 CTRL_DATA_SEL_SHIFT, 63 aiu_codec_ctrl_mux_texts); 64 65 static const struct snd_kcontrol_new aiu_hdmi_ctrl_mux = 66 SOC_DAPM_ENUM_EXT("HDMI Source", aiu_hdmi_ctrl_mux_enum, 67 snd_soc_dapm_get_enum_double, 68 aiu_codec_ctrl_mux_put_enum); 69 70 static const struct snd_soc_dapm_widget aiu_hdmi_ctrl_widgets[] = { 71 SND_SOC_DAPM_MUX("HDMI CTRL SRC", SND_SOC_NOPM, 0, 0, 72 &aiu_hdmi_ctrl_mux), 73 }; 74 75 static const struct snd_soc_dai_ops aiu_codec_ctrl_input_ops = { 76 .probe = meson_codec_glue_input_dai_probe, 77 .remove = meson_codec_glue_input_dai_remove, 78 .hw_params = meson_codec_glue_input_hw_params, 79 .set_fmt = meson_codec_glue_input_set_fmt, 80 }; 81 82 static const struct snd_soc_dai_ops aiu_codec_ctrl_output_ops = { 83 .startup = meson_codec_glue_output_startup, 84 }; 85 86 #define AIU_CODEC_CTRL_FORMATS \ 87 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 88 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \ 89 SNDRV_PCM_FMTBIT_S32_LE) 90 91 #define AIU_CODEC_CTRL_STREAM(xname, xsuffix) \ 92 { \ 93 .stream_name = xname " " xsuffix, \ 94 .channels_min = 1, \ 95 .channels_max = 8, \ 96 .rate_min = 5512, \ 97 .rate_max = 192000, \ 98 .formats = AIU_CODEC_CTRL_FORMATS, \ 99 } 100 101 #define AIU_CODEC_CTRL_INPUT(xname) { \ 102 .name = "CODEC CTRL " xname, \ 103 .playback = AIU_CODEC_CTRL_STREAM(xname, "Playback"), \ 104 .ops = &aiu_codec_ctrl_input_ops, \ 105 } 106 107 #define AIU_CODEC_CTRL_OUTPUT(xname) { \ 108 .name = "CODEC CTRL " xname, \ 109 .capture = AIU_CODEC_CTRL_STREAM(xname, "Capture"), \ 110 .ops = &aiu_codec_ctrl_output_ops, \ 111 } 112 113 static struct snd_soc_dai_driver aiu_hdmi_ctrl_dai_drv[] = { 114 [CTRL_I2S] = AIU_CODEC_CTRL_INPUT("HDMI I2S IN"), 115 [CTRL_PCM] = AIU_CODEC_CTRL_INPUT("HDMI PCM IN"), 116 [CTRL_OUT] = AIU_CODEC_CTRL_OUTPUT("HDMI OUT"), 117 }; 118 119 static const struct snd_soc_dapm_route aiu_hdmi_ctrl_routes[] = { 120 { "HDMI CTRL SRC", "I2S", "HDMI I2S IN Playback" }, 121 { "HDMI CTRL SRC", "PCM", "HDMI PCM IN Playback" }, 122 { "HDMI OUT Capture", NULL, "HDMI CTRL SRC" }, 123 }; 124 125 static int aiu_hdmi_of_xlate_dai_name(struct snd_soc_component *component, 126 const struct of_phandle_args *args, 127 const char **dai_name) 128 { 129 return aiu_of_xlate_dai_name(component, args, dai_name, AIU_HDMI); 130 } 131 132 static const struct snd_soc_component_driver aiu_hdmi_ctrl_component = { 133 .name = "AIU HDMI Codec Control", 134 .dapm_widgets = aiu_hdmi_ctrl_widgets, 135 .num_dapm_widgets = ARRAY_SIZE(aiu_hdmi_ctrl_widgets), 136 .dapm_routes = aiu_hdmi_ctrl_routes, 137 .num_dapm_routes = ARRAY_SIZE(aiu_hdmi_ctrl_routes), 138 .of_xlate_dai_name = aiu_hdmi_of_xlate_dai_name, 139 .endianness = 1, 140 #ifdef CONFIG_DEBUG_FS 141 .debugfs_prefix = "hdmi", 142 #endif 143 }; 144 145 int aiu_hdmi_ctrl_register_component(struct device *dev) 146 { 147 return snd_soc_register_component(dev, &aiu_hdmi_ctrl_component, 148 aiu_hdmi_ctrl_dai_drv, 149 ARRAY_SIZE(aiu_hdmi_ctrl_dai_drv)); 150 } 151 152