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linux_dsm_epyc7002/sound/soc/meson/g12a-tohdmitx.c
Jerome Brunet c8609f3870
ASoC: meson: add g12a tohdmitx control 
Add support for the hdmitx control glue of the Amlogic g12a SoC family.
This glue links the 3 TDM and 2 SPDIF output interfaces of the SoC to
the related inputs of the Synopsys HDMI controller found in these SoCs.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-16 12:13:35 +01:00

414 lines
12 KiB
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// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2019 BayLibre, SAS.
// Author: Jerome Brunet <jbrunet@baylibre.com>
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/module.h>
#include <sound/pcm_params.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <dt-bindings/sound/meson-g12a-tohdmitx.h>
#define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx"
#define TOHDMITX_CTRL0 0x0
#define CTRL0_ENABLE_SHIFT 31
#define CTRL0_I2S_DAT_SEL GENMASK(13, 12)
#define CTRL0_I2S_LRCLK_SEL GENMASK(9, 8)
#define CTRL0_I2S_BLK_CAP_INV BIT(7)
#define CTRL0_I2S_BCLK_O_INV BIT(6)
#define CTRL0_I2S_BCLK_SEL GENMASK(5, 4)
#define CTRL0_SPDIF_CLK_CAP_INV BIT(3)
#define CTRL0_SPDIF_CLK_O_INV BIT(2)
#define CTRL0_SPDIF_SEL BIT(1)
#define CTRL0_SPDIF_CLK_SEL BIT(0)
struct g12a_tohdmitx_input {
struct snd_pcm_hw_params params;
unsigned int fmt;
};
static struct snd_soc_dapm_widget *
g12a_tohdmitx_get_input(struct snd_soc_dapm_widget *w)
{
struct snd_soc_dapm_path *p = NULL;
struct snd_soc_dapm_widget *in;
snd_soc_dapm_widget_for_each_source_path(w, p) {
if (!p->connect)
continue;
/* Check that we still are in the same component */
if (snd_soc_dapm_to_component(w->dapm) !=
snd_soc_dapm_to_component(p->source->dapm))
continue;
if (p->source->id == snd_soc_dapm_dai_in)
return p->source;
in = g12a_tohdmitx_get_input(p->source);
if (in)
return in;
}
return NULL;
}
static struct g12a_tohdmitx_input *
g12a_tohdmitx_get_input_data(struct snd_soc_dapm_widget *w)
{
struct snd_soc_dapm_widget *in =
g12a_tohdmitx_get_input(w);
struct snd_soc_dai *dai;
if (WARN_ON(!in))
return NULL;
dai = in->priv;
return dai->playback_dma_data;
}
static const char * const g12a_tohdmitx_i2s_mux_texts[] = {
"I2S A", "I2S B", "I2S C",
};
static SOC_ENUM_SINGLE_EXT_DECL(g12a_tohdmitx_i2s_mux_enum,
g12a_tohdmitx_i2s_mux_texts);
static int g12a_tohdmitx_get_input_val(struct snd_soc_component *component,
unsigned int mask)
{
unsigned int val;
snd_soc_component_read(component, TOHDMITX_CTRL0, &val);
return (val & mask) >> __ffs(mask);
}
static int g12a_tohdmitx_i2s_mux_get_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
ucontrol->value.enumerated.item[0] =
g12a_tohdmitx_get_input_val(component, CTRL0_I2S_DAT_SEL);
return 0;
}
static int g12a_tohdmitx_i2s_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 = ucontrol->value.enumerated.item[0];
unsigned int val = g12a_tohdmitx_get_input_val(component,
CTRL0_I2S_DAT_SEL);
/* Force disconnect of the mux while updating */
if (val != mux)
snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
CTRL0_I2S_DAT_SEL |
CTRL0_I2S_LRCLK_SEL |
CTRL0_I2S_BCLK_SEL,
FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) |
FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) |
FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux));
snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
return 0;
}
static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =
SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum,
g12a_tohdmitx_i2s_mux_get_enum,
g12a_tohdmitx_i2s_mux_put_enum);
static const char * const g12a_tohdmitx_spdif_mux_texts[] = {
"SPDIF A", "SPDIF B",
};
static SOC_ENUM_SINGLE_EXT_DECL(g12a_tohdmitx_spdif_mux_enum,
g12a_tohdmitx_spdif_mux_texts);
static int g12a_tohdmitx_spdif_mux_get_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
ucontrol->value.enumerated.item[0] =
g12a_tohdmitx_get_input_val(component, CTRL0_SPDIF_SEL);
return 0;
}
static int g12a_tohdmitx_spdif_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 = ucontrol->value.enumerated.item[0];
unsigned int val = g12a_tohdmitx_get_input_val(component,
CTRL0_SPDIF_SEL);
/* Force disconnect of the mux while updating */
if (val != mux)
snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
CTRL0_SPDIF_SEL |
CTRL0_SPDIF_CLK_SEL,
FIELD_PREP(CTRL0_SPDIF_SEL, mux) |
FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux));
snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
return 0;
}
static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux =
SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum,
g12a_tohdmitx_spdif_mux_get_enum,
g12a_tohdmitx_spdif_mux_put_enum);
static const struct snd_kcontrol_new g12a_tohdmitx_out_enable =
SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0,
CTRL0_ENABLE_SHIFT, 1, 0);
static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = {
SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0,
&g12a_tohdmitx_i2s_mux),
SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0,
&g12a_tohdmitx_out_enable),
SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0,
&g12a_tohdmitx_spdif_mux),
SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0,
&g12a_tohdmitx_out_enable),
};
static int g12a_tohdmitx_input_probe(struct snd_soc_dai *dai)
{
struct g12a_tohdmitx_input *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
dai->playback_dma_data = data;
return 0;
}
static int g12a_tohdmitx_input_remove(struct snd_soc_dai *dai)
{
kfree(dai->playback_dma_data);
return 0;
}
static int g12a_tohdmitx_input_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct g12a_tohdmitx_input *data = dai->playback_dma_data;
/* Save the stream params for the downstream link */
memcpy(&data->params, params, sizeof(*params));
return 0;
}
static int g12a_tohdmitx_output_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct g12a_tohdmitx_input *in_data =
g12a_tohdmitx_get_input_data(dai->capture_widget);
if (!in_data)
return -ENODEV;
memcpy(params, &in_data->params, sizeof(*params));
return 0;
}
static int g12a_tohdmitx_input_set_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
{
struct g12a_tohdmitx_input *data = dai->playback_dma_data;
/* Save the source stream format for the downstream link */
data->fmt = fmt;
return 0;
}
static int g12a_tohdmitx_output_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct g12a_tohdmitx_input *in_data =
g12a_tohdmitx_get_input_data(dai->capture_widget);
if (!in_data)
return -ENODEV;
if (!in_data->fmt)
return 0;
return snd_soc_runtime_set_dai_fmt(rtd, in_data->fmt);
}
static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {
.hw_params = g12a_tohdmitx_input_hw_params,
.set_fmt = g12a_tohdmitx_input_set_fmt,
};
static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {
.hw_params = g12a_tohdmitx_output_hw_params,
.startup = g12a_tohdmitx_output_startup,
};
#define TOHDMITX_SPDIF_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
#define TOHDMITX_I2S_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 TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax) \
{ \
.stream_name = xname " " xsuffix, \
.channels_min = 1, \
.channels_max = (xchmax), \
.rate_min = 8000, \
.rate_max = 192000, \
.formats = (xfmt), \
}
#define TOHDMITX_IN(xname, xid, xfmt, xchmax) { \
.name = xname, \
.id = (xid), \
.playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax), \
.ops = &g12a_tohdmitx_input_ops, \
.probe = g12a_tohdmitx_input_probe, \
.remove = g12a_tohdmitx_input_remove, \
}
#define TOHDMITX_OUT(xname, xid, xfmt, xchmax) { \
.name = xname, \
.id = (xid), \
.capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax), \
.ops = &g12a_tohdmitx_output_ops, \
}
static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {
TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,
TOHDMITX_I2S_FORMATS, 8),
TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,
TOHDMITX_I2S_FORMATS, 8),
TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,
TOHDMITX_I2S_FORMATS, 8),
TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,
TOHDMITX_I2S_FORMATS, 8),
TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,
TOHDMITX_SPDIF_FORMATS, 2),
TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,
TOHDMITX_SPDIF_FORMATS, 2),
TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,
TOHDMITX_SPDIF_FORMATS, 2),
};
static int g12a_tohdmi_component_probe(struct snd_soc_component *c)
{
/* Initialize the static clock parameters */
return snd_soc_component_write(c, TOHDMITX_CTRL0,
CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);
}
static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {
{ "I2S SRC", "I2S A", "I2S IN A Playback" },
{ "I2S SRC", "I2S B", "I2S IN B Playback" },
{ "I2S SRC", "I2S C", "I2S IN C Playback" },
{ "I2S OUT EN", "Switch", "I2S SRC" },
{ "I2S OUT Capture", NULL, "I2S OUT EN" },
{ "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
{ "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
{ "SPDIF OUT EN", "Switch", "SPDIF SRC" },
{ "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
};
static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
.probe = g12a_tohdmi_component_probe,
.dapm_widgets = g12a_tohdmitx_widgets,
.num_dapm_widgets = ARRAY_SIZE(g12a_tohdmitx_widgets),
.dapm_routes = g12a_tohdmitx_routes,
.num_dapm_routes = ARRAY_SIZE(g12a_tohdmitx_routes),
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
};
static const struct of_device_id g12a_tohdmitx_of_match[] = {
{ .compatible = "amlogic,g12a-tohdmitx", },
{}
};
MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
static int g12a_tohdmitx_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
void __iomem *regs;
struct regmap *map;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
if (IS_ERR(map)) {
dev_err(dev, "failed to init regmap: %ld\n",
PTR_ERR(map));
return PTR_ERR(map);
}
return devm_snd_soc_register_component(dev,
&g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
ARRAY_SIZE(g12a_tohdmitx_dai_drv));
}
static struct platform_driver g12a_tohdmitx_pdrv = {
.driver = {
.name = G12A_TOHDMITX_DRV_NAME,
.of_match_table = g12a_tohdmitx_of_match,
},
.probe = g12a_tohdmitx_probe,
};
module_platform_driver(g12a_tohdmitx_pdrv);
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
MODULE_LICENSE("GPL v2");
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