sound/soc/meson/aiu-codec-ctrl.c

   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         .probe          = meson_codec_glue_input_dai_probe,
  79         .remove         = meson_codec_glue_input_dai_remove,
  80         .hw_params      = meson_codec_glue_input_hw_params,
  81         .set_fmt        = meson_codec_glue_input_set_fmt,
  82 };
  83
  84 static const struct snd_soc_dai_ops aiu_codec_ctrl_output_ops = {
  85         .startup        = meson_codec_glue_output_startup,
  86 };
  87
  88 #define AIU_CODEC_CTRL_FORMATS                                  \
  89         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |   \
  90          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |   \
  91          SNDRV_PCM_FMTBIT_S32_LE)
  92
  93 #define AIU_CODEC_CTRL_STREAM(xname, xsuffix)                   \
  94 {                                                               \
  95         .stream_name    = xname " " xsuffix,                    \
  96         .channels_min   = 1,                                    \
  97         .channels_max   = 8,                                    \
  98         .rate_min       = 5512,                                 \
  99         .rate_max       = 192000,                               \
 100         .formats        = AIU_CODEC_CTRL_FORMATS,               \
 101 }
 102
 103 #define AIU_CODEC_CTRL_INPUT(xname) {                           \
 104         .name = "CODEC CTRL " xname,                            \
 105         .playback = AIU_CODEC_CTRL_STREAM(xname, "Playback"),   \
 106         .ops = &aiu_codec_ctrl_input_ops,                       \
 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