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 if (ucontrol->value.enumerated.item[0] >= e->items) 32 return -EINVAL; 33 34 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 35 changed = snd_soc_component_test_bits(component, e->reg, 36 CTRL_DATA_SEL, 37 FIELD_PREP(CTRL_DATA_SEL, mux)); 38 39 if (!changed) 40 return 0; 41 42 /* Force disconnect of the mux while updating */ 43 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 44 45 /* Reset the source first */ 46 snd_soc_component_update_bits(component, e->reg, 47 CTRL_CLK_SEL | 48 CTRL_DATA_SEL, 49 FIELD_PREP(CTRL_CLK_SEL, 0) | 50 FIELD_PREP(CTRL_DATA_SEL, 0)); 51 52 /* Set the appropriate source */ 53 snd_soc_component_update_bits(component, e->reg, 54 CTRL_CLK_SEL | 55 CTRL_DATA_SEL, 56 FIELD_PREP(CTRL_CLK_SEL, mux) | 57 FIELD_PREP(CTRL_DATA_SEL, 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_hdmi_ctrl_mux_enum, AIU_HDMI_CLK_DATA_CTRL, 65 CTRL_DATA_SEL_SHIFT, 66 aiu_codec_ctrl_mux_texts); 67 68 static const struct snd_kcontrol_new aiu_hdmi_ctrl_mux = 69 SOC_DAPM_ENUM_EXT("HDMI Source", aiu_hdmi_ctrl_mux_enum, 70 snd_soc_dapm_get_enum_double, 71 aiu_codec_ctrl_mux_put_enum); 72 73 static const struct snd_soc_dapm_widget aiu_hdmi_ctrl_widgets[] = { 74 SND_SOC_DAPM_MUX("HDMI CTRL SRC", SND_SOC_NOPM, 0, 0, 75 &aiu_hdmi_ctrl_mux), 76 }; 77 78 static const struct snd_soc_dai_ops aiu_codec_ctrl_input_ops = { 79 .probe = meson_codec_glue_input_dai_probe, 80 .remove = meson_codec_glue_input_dai_remove, 81 .hw_params = meson_codec_glue_input_hw_params, 82 .set_fmt = meson_codec_glue_input_set_fmt, 83 }; 84 85 static const struct snd_soc_dai_ops aiu_codec_ctrl_output_ops = { 86 .startup = meson_codec_glue_output_startup, 87 }; 88 89 #define AIU_CODEC_CTRL_FORMATS \ 90 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 91 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \ 92 SNDRV_PCM_FMTBIT_S32_LE) 93 94 #define AIU_CODEC_CTRL_STREAM(xname, xsuffix) \ 95 { \ 96 .stream_name = xname " " xsuffix, \ 97 .channels_min = 1, \ 98 .channels_max = 8, \ 99 .rate_min = 5512, \ 100 .rate_max = 192000, \ 101 .formats = AIU_CODEC_CTRL_FORMATS, \ 102 } 103 104 #define AIU_CODEC_CTRL_INPUT(xname) { \ 105 .name = "CODEC CTRL " xname, \ 106 .playback = AIU_CODEC_CTRL_STREAM(xname, "Playback"), \ 107 .ops = &aiu_codec_ctrl_input_ops, \ 108 } 109 110 #define AIU_CODEC_CTRL_OUTPUT(xname) { \ 111 .name = "CODEC CTRL " xname, \ 112 .capture = AIU_CODEC_CTRL_STREAM(xname, "Capture"), \ 113 .ops = &aiu_codec_ctrl_output_ops, \ 114 } 115 116 static struct snd_soc_dai_driver aiu_hdmi_ctrl_dai_drv[] = { 117 [CTRL_I2S] = AIU_CODEC_CTRL_INPUT("HDMI I2S IN"), 118 [CTRL_PCM] = AIU_CODEC_CTRL_INPUT("HDMI PCM IN"), 119 [CTRL_OUT] = AIU_CODEC_CTRL_OUTPUT("HDMI OUT"), 120 }; 121 122 static const struct snd_soc_dapm_route aiu_hdmi_ctrl_routes[] = { 123 { "HDMI CTRL SRC", "I2S", "HDMI I2S IN Playback" }, 124 { "HDMI CTRL SRC", "PCM", "HDMI PCM IN Playback" }, 125 { "HDMI OUT Capture", NULL, "HDMI CTRL SRC" }, 126 }; 127 128 static int aiu_hdmi_of_xlate_dai_name(struct snd_soc_component *component, 129 const struct of_phandle_args *args, 130 const char **dai_name) 131 { 132 return aiu_of_xlate_dai_name(component, args, dai_name, AIU_HDMI); 133 } 134 135 static const struct snd_soc_component_driver aiu_hdmi_ctrl_component = { 136 .name = "AIU HDMI Codec Control", 137 .dapm_widgets = aiu_hdmi_ctrl_widgets, 138 .num_dapm_widgets = ARRAY_SIZE(aiu_hdmi_ctrl_widgets), 139 .dapm_routes = aiu_hdmi_ctrl_routes, 140 .num_dapm_routes = ARRAY_SIZE(aiu_hdmi_ctrl_routes), 141 .of_xlate_dai_name = aiu_hdmi_of_xlate_dai_name, 142 .endianness = 1, 143 #ifdef CONFIG_DEBUG_FS 144 .debugfs_prefix = "hdmi", 145 #endif 146 }; 147 148 int aiu_hdmi_ctrl_register_component(struct device *dev) 149 { 150 return snd_soc_register_component(dev, &aiu_hdmi_ctrl_component, 151 aiu_hdmi_ctrl_dai_drv, 152 ARRAY_SIZE(aiu_hdmi_ctrl_dai_drv)); 153 } 154 155