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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
//
// Copyright (c) 2018 BayLibre, SAS.
// Author: Jerome Brunet <jbrunet@baylibre.com>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include "axg-tdm-formatter.h"
#define TDMOUT_CTRL0 0x00
#define TDMOUT_CTRL0_BITNUM_MASK GENMASK(4, 0)
#define TDMOUT_CTRL0_BITNUM(x) ((x) << 0)
#define TDMOUT_CTRL0_SLOTNUM_MASK GENMASK(9, 5)
#define TDMOUT_CTRL0_SLOTNUM(x) ((x) << 5)
#define TDMOUT_CTRL0_INIT_BITNUM_MASK GENMASK(19, 15)
#define TDMOUT_CTRL0_INIT_BITNUM(x) ((x) << 15)
#define TDMOUT_CTRL0_ENABLE BIT(31)
#define TDMOUT_CTRL0_RST_OUT BIT(29)
#define TDMOUT_CTRL0_RST_IN BIT(28)
#define TDMOUT_CTRL1 0x04
#define TDMOUT_CTRL1_TYPE_MASK GENMASK(6, 4)
#define TDMOUT_CTRL1_TYPE(x) ((x) << 4)
#define TDMOUT_CTRL1_MSB_POS_MASK GENMASK(12, 8)
#define TDMOUT_CTRL1_MSB_POS(x) ((x) << 8)
#define TDMOUT_CTRL1_SEL_SHIFT 24
#define TDMOUT_CTRL1_GAIN_EN 26
#define TDMOUT_CTRL1_WS_INV BIT(28)
#define TDMOUT_SWAP 0x08
#define TDMOUT_MASK0 0x0c
#define TDMOUT_MASK1 0x10
#define TDMOUT_MASK2 0x14
#define TDMOUT_MASK3 0x18
#define TDMOUT_STAT 0x1c
#define TDMOUT_GAIN0 0x20
#define TDMOUT_GAIN1 0x24
#define TDMOUT_MUTE_VAL 0x28
#define TDMOUT_MUTE0 0x2c
#define TDMOUT_MUTE1 0x30
#define TDMOUT_MUTE2 0x34
#define TDMOUT_MUTE3 0x38
#define TDMOUT_MASK_VAL 0x3c
static const struct regmap_config axg_tdmout_regmap_cfg = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = TDMOUT_MASK_VAL,
};
static const struct snd_kcontrol_new axg_tdmout_controls[] = {
SOC_DOUBLE("Lane 0 Volume", TDMOUT_GAIN0, 0, 8, 255, 0),
SOC_DOUBLE("Lane 1 Volume", TDMOUT_GAIN0, 16, 24, 255, 0),
SOC_DOUBLE("Lane 2 Volume", TDMOUT_GAIN1, 0, 8, 255, 0),
SOC_DOUBLE("Lane 3 Volume", TDMOUT_GAIN1, 16, 24, 255, 0),
SOC_SINGLE("Gain Enable Switch", TDMOUT_CTRL1,
TDMOUT_CTRL1_GAIN_EN, 1, 0),
};
static const char * const tdmout_sel_texts[] = {
"IN 0", "IN 1", "IN 2",
};
static SOC_ENUM_SINGLE_DECL(axg_tdmout_sel_enum, TDMOUT_CTRL1,
TDMOUT_CTRL1_SEL_SHIFT, tdmout_sel_texts);
static const struct snd_kcontrol_new axg_tdmout_in_mux =
SOC_DAPM_ENUM("Input Source", axg_tdmout_sel_enum);
static struct snd_soc_dai *
axg_tdmout_get_be(struct snd_soc_dapm_widget *w)
{
struct snd_soc_dapm_path *p = NULL;
struct snd_soc_dai *be;
snd_soc_dapm_widget_for_each_sink_path(w, p) {
if (!p->connect)
continue;
if (p->sink->id == snd_soc_dapm_dai_in)
return (struct snd_soc_dai *)p->sink->priv;
be = axg_tdmout_get_be(p->sink);
if (be)
return be;
}
return NULL;
}
static struct axg_tdm_stream *
axg_tdmout_get_tdm_stream(struct snd_soc_dapm_widget *w)
{
struct snd_soc_dai *be = axg_tdmout_get_be(w);
if (!be)
return NULL;
return be->playback_dma_data;
}
static void axg_tdmout_enable(struct regmap *map)
{
/* Apply both reset */
regmap_update_bits(map, TDMOUT_CTRL0,
TDMOUT_CTRL0_RST_OUT | TDMOUT_CTRL0_RST_IN, 0);
/* Clear out reset before in reset */
regmap_update_bits(map, TDMOUT_CTRL0,
TDMOUT_CTRL0_RST_OUT, TDMOUT_CTRL0_RST_OUT);
regmap_update_bits(map, TDMOUT_CTRL0,
TDMOUT_CTRL0_RST_IN, TDMOUT_CTRL0_RST_IN);
/* Actually enable tdmout */
regmap_update_bits(map, TDMOUT_CTRL0,
TDMOUT_CTRL0_ENABLE, TDMOUT_CTRL0_ENABLE);
}
static void axg_tdmout_disable(struct regmap *map)
{
regmap_update_bits(map, TDMOUT_CTRL0, TDMOUT_CTRL0_ENABLE, 0);
}
static int axg_tdmout_prepare(struct regmap *map, struct axg_tdm_stream *ts)
{
unsigned int val = 0;
/* Set the stream skew */
switch (ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_DSP_A:
val |= TDMOUT_CTRL0_INIT_BITNUM(1);
break;
case SND_SOC_DAIFMT_LEFT_J:
case SND_SOC_DAIFMT_DSP_B:
val |= TDMOUT_CTRL0_INIT_BITNUM(2);
break;
default:
pr_err("Unsupported format: %u\n",
ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK);
return -EINVAL;
}
/* Set the slot width */
val |= TDMOUT_CTRL0_BITNUM(ts->iface->slot_width - 1);
/* Set the slot number */
val |= TDMOUT_CTRL0_SLOTNUM(ts->iface->slots - 1);
regmap_update_bits(map, TDMOUT_CTRL0,
TDMOUT_CTRL0_INIT_BITNUM_MASK |
TDMOUT_CTRL0_BITNUM_MASK |
TDMOUT_CTRL0_SLOTNUM_MASK, val);
/* Set the sample width */
val = TDMOUT_CTRL1_MSB_POS(ts->width - 1);
/* FIFO data are arranged in chunks of 64bits */
switch (ts->physical_width) {
case 8:
/* 8 samples of 8 bits */
val |= TDMOUT_CTRL1_TYPE(0);
break;
case 16:
/* 4 samples of 16 bits - right justified */
val |= TDMOUT_CTRL1_TYPE(2);
break;
case 32:
/* 2 samples of 32 bits - right justified */
val |= TDMOUT_CTRL1_TYPE(4);
break;
default:
pr_err("Unsupported physical width: %u\n",
ts->physical_width);
return -EINVAL;
}
/* If the sample clock is inverted, invert it back for the formatter */
if (axg_tdm_lrclk_invert(ts->iface->fmt))
val |= TDMOUT_CTRL1_WS_INV;
regmap_update_bits(map, TDMOUT_CTRL1,
(TDMOUT_CTRL1_TYPE_MASK | TDMOUT_CTRL1_MSB_POS_MASK |
TDMOUT_CTRL1_WS_INV), val);
/* Set static swap mask configuration */
regmap_write(map, TDMOUT_SWAP, 0x76543210);
return axg_tdm_formatter_set_channel_masks(map, ts, TDMOUT_MASK0);
}
static const struct snd_soc_dapm_widget axg_tdmout_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_tdmout_in_mux),
SND_SOC_DAPM_PGA_E("ENC", SND_SOC_NOPM, 0, 0, NULL, 0,
axg_tdm_formatter_event,
(SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)),
SND_SOC_DAPM_AIF_OUT("OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route axg_tdmout_dapm_routes[] = {
{ "SRC SEL", "IN 0", "IN 0" },
{ "SRC SEL", "IN 1", "IN 1" },
{ "SRC SEL", "IN 2", "IN 2" },
{ "ENC", NULL, "SRC SEL" },
{ "OUT", NULL, "ENC" },
};
static const struct snd_soc_component_driver axg_tdmout_component_drv = {
.controls = axg_tdmout_controls,
.num_controls = ARRAY_SIZE(axg_tdmout_controls),
.dapm_widgets = axg_tdmout_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(axg_tdmout_dapm_widgets),
.dapm_routes = axg_tdmout_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(axg_tdmout_dapm_routes),
};
static const struct axg_tdm_formatter_ops axg_tdmout_ops = {
.get_stream = axg_tdmout_get_tdm_stream,
.prepare = axg_tdmout_prepare,
.enable = axg_tdmout_enable,
.disable = axg_tdmout_disable,
};
static const struct axg_tdm_formatter_driver axg_tdmout_drv = {
.component_drv = &axg_tdmout_component_drv,
.regmap_cfg = &axg_tdmout_regmap_cfg,
.ops = &axg_tdmout_ops,
.invert_sclk = true,
};
static const struct of_device_id axg_tdmout_of_match[] = {
{
.compatible = "amlogic,axg-tdmout",
.data = &axg_tdmout_drv,
}, {}
};
MODULE_DEVICE_TABLE(of, axg_tdmout_of_match);
static struct platform_driver axg_tdmout_pdrv = {
.probe = axg_tdm_formatter_probe,
.driver = {
.name = "axg-tdmout",
.of_match_table = axg_tdmout_of_match,
},
};
module_platform_driver(axg_tdmout_pdrv);
MODULE_DESCRIPTION("Amlogic AXG TDM output formatter driver");
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_LICENSE("GPL v2");
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