// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2020 BayLibre, SAS.
// Author: Jerome Brunet <jbrunet@baylibre.com>
#include <linux/bitfield.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <dt-bindings/sound/meson-aiu.h>
#include "aiu.h"
#include "meson-codec-glue.h"
#define CTRL_CLK_SEL GENMASK(1, 0)
#define CTRL_DATA_SEL_SHIFT 4
#define CTRL_DATA_SEL (0x3 << CTRL_DATA_SEL_SHIFT)
static const char * const aiu_codec_ctrl_mux_texts[] = {
"DISABLED", "PCM", "I2S",
};
static int aiu_codec_ctrl_mux_put_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
struct snd_soc_dapm_context *dapm =
snd_soc_dapm_kcontrol_dapm(kcontrol);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int mux, changed;
mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
changed = snd_soc_component_test_bits(component, e->reg,
CTRL_DATA_SEL,
FIELD_PREP(CTRL_DATA_SEL, mux));
if (!changed)
return 0;
/* Force disconnect of the mux while updating */
snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
/* Reset the source first */
snd_soc_component_update_bits(component, e->reg,
CTRL_CLK_SEL |
CTRL_DATA_SEL,
FIELD_PREP(CTRL_CLK_SEL, 0) |
FIELD_PREP(CTRL_DATA_SEL, 0));
/* Set the appropriate source */
snd_soc_component_update_bits(component, e->reg,
CTRL_CLK_SEL |
CTRL_DATA_SEL,
FIELD_PREP(CTRL_CLK_SEL, mux) |
FIELD_PREP(CTRL_DATA_SEL, mux));
snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
return 1;
}
static SOC_ENUM_SINGLE_DECL(aiu_hdmi_ctrl_mux_enum, AIU_HDMI_CLK_DATA_CTRL,
CTRL_DATA_SEL_SHIFT,
aiu_codec_ctrl_mux_texts);
static const struct snd_kcontrol_new aiu_hdmi_ctrl_mux =
SOC_DAPM_ENUM_EXT("HDMI Source", aiu_hdmi_ctrl_mux_enum,
snd_soc_dapm_get_enum_double,
aiu_codec_ctrl_mux_put_enum);
static const struct snd_soc_dapm_widget aiu_hdmi_ctrl_widgets[] = {
SND_SOC_DAPM_MUX("HDMI CTRL SRC", SND_SOC_NOPM, 0, 0,
&aiu_hdmi_ctrl_mux),
};
static const struct snd_soc_dai_ops aiu_codec_ctrl_input_ops = {
.probe = meson_codec_glue_input_dai_probe,
.remove = meson_codec_glue_input_dai_remove,
.hw_params = meson_codec_glue_input_hw_params,
.set_fmt = meson_codec_glue_input_set_fmt,
};
static const struct snd_soc_dai_ops aiu_codec_ctrl_output_ops = {
.startup = meson_codec_glue_output_startup,
};
#define AIU_CODEC_CTRL_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \
SNDRV_PCM_FMTBIT_S32_LE)
#define AIU_CODEC_CTRL_STREAM(xname, xsuffix) \
{ \
.stream_name = xname " " xsuffix, \
.channels_min = 1, \
.channels_max = 8, \
.rate_min = 5512, \
.rate_max = 192000, \
.formats = AIU_CODEC_CTRL_FORMATS, \
}
#define AIU_CODEC_CTRL_INPUT(xname) { \
.name = "CODEC CTRL " xname, \
.playback = AIU_CODEC_CTRL_STREAM(xname, "Playback"), \
.ops = &aiu_codec_ctrl_input_ops, \
}
#define AIU_CODEC_CTRL_OUTPUT(xname) { \
.name = "CODEC CTRL " xname, \
.capture = AIU_CODEC_CTRL_STREAM(xname, "Capture"), \
.ops = &aiu_codec_ctrl_output_ops, \
}
static struct snd_soc_dai_driver aiu_hdmi_ctrl_dai_drv[] = {
[CTRL_I2S] = AIU_CODEC_CTRL_INPUT("HDMI I2S IN"),
[CTRL_PCM] = AIU_CODEC_CTRL_INPUT("HDMI PCM IN"),
[CTRL_OUT] = AIU_CODEC_CTRL_OUTPUT("HDMI OUT"),
};
static const struct snd_soc_dapm_route aiu_hdmi_ctrl_routes[] = {
{ "HDMI CTRL SRC", "I2S", "HDMI I2S IN Playback" },
{ "HDMI CTRL SRC", "PCM", "HDMI PCM IN Playback" },
{ "HDMI OUT Capture", NULL, "HDMI CTRL SRC" },
};
static int aiu_hdmi_of_xlate_dai_name(struct snd_soc_component *component,
const struct of_phandle_args *args,
const char **dai_name)
{
return aiu_of_xlate_dai_name(component, args, dai_name, AIU_HDMI);
}
static const struct snd_soc_component_driver aiu_hdmi_ctrl_component = {
.name = "AIU HDMI Codec Control",
.dapm_widgets = aiu_hdmi_ctrl_widgets,
.num_dapm_widgets = ARRAY_SIZE(aiu_hdmi_ctrl_widgets),
.dapm_routes = aiu_hdmi_ctrl_routes,
.num_dapm_routes = ARRAY_SIZE(aiu_hdmi_ctrl_routes),
.of_xlate_dai_name = aiu_hdmi_of_xlate_dai_name,
.endianness = 1,
#ifdef CONFIG_DEBUG_FS
.debugfs_prefix = "hdmi",
#endif
};
int aiu_hdmi_ctrl_register_component(struct device *dev)
{
return snd_soc_register_component(dev, &aiu_hdmi_ctrl_component,
aiu_hdmi_ctrl_dai_drv,
ARRAY_SIZE(aiu_hdmi_ctrl_dai_drv));
}
