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 = 27 snd_soc_dapm_kcontrol_component(kcontrol); 28 struct snd_soc_dapm_context *dapm = 29 snd_soc_dapm_kcontrol_dapm(kcontrol); 30 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 31 unsigned int mux, changed; 32 33 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 34 changed = snd_soc_component_test_bits(component, e->reg, 35 CTRL_DATA_SEL, 36 FIELD_PREP(CTRL_DATA_SEL, mux)); 37 38 if (!changed) 39 return 0; 40 41 /* Force disconnect of the mux while updating */ 42 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 43 44 /* Reset the source first */ 45 snd_soc_component_update_bits(component, e->reg, 46 CTRL_CLK_SEL | 47 CTRL_DATA_SEL, 48 FIELD_PREP(CTRL_CLK_SEL, 0) | 49 FIELD_PREP(CTRL_DATA_SEL, 0)); 50 51 /* Set the appropriate source */ 52 snd_soc_component_update_bits(component, e->reg, 53 CTRL_CLK_SEL | 54 CTRL_DATA_SEL, 55 FIELD_PREP(CTRL_CLK_SEL, mux) | 56 FIELD_PREP(CTRL_DATA_SEL, mux)); 57 58 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 59 60 return 1; 61 } 62 63 static SOC_ENUM_SINGLE_DECL(aiu_hdmi_ctrl_mux_enum, AIU_HDMI_CLK_DATA_CTRL, 64 CTRL_DATA_SEL_SHIFT, 65 aiu_codec_ctrl_mux_texts); 66 67 static const struct snd_kcontrol_new aiu_hdmi_ctrl_mux = 68 SOC_DAPM_ENUM_EXT("HDMI Source", aiu_hdmi_ctrl_mux_enum, 69 snd_soc_dapm_get_enum_double, 70 aiu_codec_ctrl_mux_put_enum); 71 72 static const struct snd_soc_dapm_widget aiu_hdmi_ctrl_widgets[] = { 73 SND_SOC_DAPM_MUX("HDMI CTRL SRC", SND_SOC_NOPM, 0, 0, 74 &aiu_hdmi_ctrl_mux), 75 }; 76 77 static const struct snd_soc_dai_ops aiu_codec_ctrl_input_ops = { 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 .probe = meson_codec_glue_input_dai_probe, \ 106 .remove = meson_codec_glue_input_dai_remove, \ 107 } 108 109 #define AIU_CODEC_CTRL_OUTPUT(xname) { \ 110 .name = "CODEC CTRL " xname, \ 111 .capture = AIU_CODEC_CTRL_STREAM(xname, "Capture"), \ 112 .ops = &aiu_codec_ctrl_output_ops, \ 113 } 114 115 static struct snd_soc_dai_driver aiu_hdmi_ctrl_dai_drv[] = { 116 [CTRL_I2S] = AIU_CODEC_CTRL_INPUT("HDMI I2S IN"), 117 [CTRL_PCM] = AIU_CODEC_CTRL_INPUT("HDMI PCM IN"), 118 [CTRL_OUT] = AIU_CODEC_CTRL_OUTPUT("HDMI OUT"), 119 }; 120 121 static const struct snd_soc_dapm_route aiu_hdmi_ctrl_routes[] = { 122 { "HDMI CTRL SRC", "I2S", "HDMI I2S IN Playback" }, 123 { "HDMI CTRL SRC", "PCM", "HDMI PCM IN Playback" }, 124 { "HDMI OUT Capture", NULL, "HDMI CTRL SRC" }, 125 }; 126 127 static int aiu_hdmi_of_xlate_dai_name(struct snd_soc_component *component, 128 const struct of_phandle_args *args, 129 const char **dai_name) 130 { 131 return aiu_of_xlate_dai_name(component, args, dai_name, AIU_HDMI); 132 } 133 134 static const struct snd_soc_component_driver aiu_hdmi_ctrl_component = { 135 .name = "AIU HDMI Codec Control", 136 .dapm_widgets = aiu_hdmi_ctrl_widgets, 137 .num_dapm_widgets = ARRAY_SIZE(aiu_hdmi_ctrl_widgets), 138 .dapm_routes = aiu_hdmi_ctrl_routes, 139 .num_dapm_routes = ARRAY_SIZE(aiu_hdmi_ctrl_routes), 140 .of_xlate_dai_name = aiu_hdmi_of_xlate_dai_name, 141 .endianness = 1, 142 #ifdef CONFIG_DEBUG_FS 143 .debugfs_prefix = "hdmi", 144 #endif 145 }; 146 147 int aiu_hdmi_ctrl_register_component(struct device *dev) 148 { 149 return snd_soc_register_component(dev, &aiu_hdmi_ctrl_component, 150 aiu_hdmi_ctrl_dai_drv, 151 ARRAY_SIZE(aiu_hdmi_ctrl_dai_drv)); 152 } 153 154