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linux/sound/soc/tegra/tegra210_peq.c
Rob Herring 340d79a14d
ASoC: Explicitly include correct DT includes 
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> # for at91
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231006-dt-asoc-header-cleanups-v3-1-13a4f0f7fee6@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-09 13:13:56 +01:00

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// SPDX-License-Identifier: GPL-2.0-only
//
// tegra210_peq.c - Tegra210 PEQ driver
//
// Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "tegra210_ope.h"
#include "tegra210_peq.h"
static const struct reg_default tegra210_peq_reg_defaults[] = {
{ TEGRA210_PEQ_CFG, 0x00000013},
{ TEGRA210_PEQ_CFG_RAM_CTRL, 0x00004000},
{ TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL, 0x00004000},
};
static const u32 biquad_init_gains[TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH] = {
1495012349, /* Pre-gain */
/* Gains : b0, b1, a0, a1, a2 */
536870912, -1073741824, 536870912, 2143508246, -1069773768, /* Band-0 */
134217728, -265414508, 131766272, 2140402222, -1071252997, /* Band-1 */
268435456, -233515765, -33935948, 1839817267, -773826124, /* Band-2 */
536870912, -672537913, 139851540, 1886437554, -824433167, /* Band-3 */
268435456, -114439279, 173723964, 205743566, 278809729, /* Band-4 */
1, 0, 0, 0, 0, /* Band-5 */
1, 0, 0, 0, 0, /* Band-6 */
1, 0, 0, 0, 0, /* Band-7 */
1, 0, 0, 0, 0, /* Band-8 */
1, 0, 0, 0, 0, /* Band-9 */
1, 0, 0, 0, 0, /* Band-10 */
1, 0, 0, 0, 0, /* Band-11 */
963423114, /* Post-gain */
};
static const u32 biquad_init_shifts[TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH] = {
23, /* Pre-shift */
30, 30, 30, 30, 30, 0, 0, 0, 0, 0, 0, 0, /* Shift for bands */
28, /* Post-shift */
};
static s32 biquad_coeff_buffer[TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH];
static void tegra210_peq_read_ram(struct regmap *regmap, unsigned int reg_ctrl,
unsigned int reg_data, unsigned int ram_offset,
unsigned int *data, size_t size)
{
unsigned int val;
unsigned int i;
val = ram_offset & TEGRA210_PEQ_RAM_CTRL_RAM_ADDR_MASK;
val |= TEGRA210_PEQ_RAM_CTRL_ADDR_INIT_EN;
val |= TEGRA210_PEQ_RAM_CTRL_SEQ_ACCESS_EN;
val |= TEGRA210_PEQ_RAM_CTRL_RW_READ;
regmap_write(regmap, reg_ctrl, val);
/*
* Since all ahub non-io modules work under same ahub clock it is not
* necessary to check ahub read busy bit after every read.
*/
for (i = 0; i < size; i++)
regmap_read(regmap, reg_data, &data[i]);
}
static void tegra210_peq_write_ram(struct regmap *regmap, unsigned int reg_ctrl,
unsigned int reg_data, unsigned int ram_offset,
unsigned int *data, size_t size)
{
unsigned int val;
unsigned int i;
val = ram_offset & TEGRA210_PEQ_RAM_CTRL_RAM_ADDR_MASK;
val |= TEGRA210_PEQ_RAM_CTRL_ADDR_INIT_EN;
val |= TEGRA210_PEQ_RAM_CTRL_SEQ_ACCESS_EN;
val |= TEGRA210_PEQ_RAM_CTRL_RW_WRITE;
regmap_write(regmap, reg_ctrl, val);
for (i = 0; i < size; i++)
regmap_write(regmap, reg_data, data[i]);
}
static int tegra210_peq_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
unsigned int mask = (1 << fls(mc->max)) - 1;
unsigned int val;
regmap_read(ope->peq_regmap, mc->reg, &val);
ucontrol->value.integer.value[0] = (val >> mc->shift) & mask;
if (!mc->invert)
return 0;
ucontrol->value.integer.value[0] =
mc->max - ucontrol->value.integer.value[0];
return 0;
}
static int tegra210_peq_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
unsigned int mask = (1 << fls(mc->max)) - 1;
bool change = false;
unsigned int val;
val = (ucontrol->value.integer.value[0] & mask);
if (mc->invert)
val = mc->max - val;
val = val << mc->shift;
regmap_update_bits_check(ope->peq_regmap, mc->reg, (mask << mc->shift),
val, &change);
return change ? 1 : 0;
}
static int tegra210_peq_ram_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
u32 i, reg_ctrl = params->soc.base;
u32 reg_data = reg_ctrl + cmpnt->val_bytes;
s32 *data = (s32 *)biquad_coeff_buffer;
pm_runtime_get_sync(cmpnt->dev);
tegra210_peq_read_ram(ope->peq_regmap, reg_ctrl, reg_data,
params->shift, data, params->soc.num_regs);
pm_runtime_put_sync(cmpnt->dev);
for (i = 0; i < params->soc.num_regs; i++)
ucontrol->value.integer.value[i] = (long)data[i];
return 0;
}
static int tegra210_peq_ram_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
u32 i, reg_ctrl = params->soc.base;
u32 reg_data = reg_ctrl + cmpnt->val_bytes;
s32 *data = (s32 *)biquad_coeff_buffer;
for (i = 0; i < params->soc.num_regs; i++)
data[i] = (s32)ucontrol->value.integer.value[i];
pm_runtime_get_sync(cmpnt->dev);
tegra210_peq_write_ram(ope->peq_regmap, reg_ctrl, reg_data,
params->shift, data, params->soc.num_regs);
pm_runtime_put_sync(cmpnt->dev);
return 1;
}
static int tegra210_peq_param_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct soc_bytes *params = (void *)kcontrol->private_value;
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->value.integer.min = INT_MIN;
uinfo->value.integer.max = INT_MAX;
uinfo->count = params->num_regs;
return 0;
}
#define TEGRA210_PEQ_GAIN_PARAMS_CTRL(chan) \
TEGRA_SOC_BYTES_EXT("PEQ Channel-" #chan " Biquad Gain Params", \
TEGRA210_PEQ_CFG_RAM_CTRL, \
TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH, \
(TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH * chan), 0xffffffff, \
tegra210_peq_ram_get, tegra210_peq_ram_put, \
tegra210_peq_param_info)
#define TEGRA210_PEQ_SHIFT_PARAMS_CTRL(chan) \
TEGRA_SOC_BYTES_EXT("PEQ Channel-" #chan " Biquad Shift Params", \
TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL, \
TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH, \
(TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH * chan), 0x1f, \
tegra210_peq_ram_get, tegra210_peq_ram_put, \
tegra210_peq_param_info)
static const struct snd_kcontrol_new tegra210_peq_controls[] = {
SOC_SINGLE_EXT("PEQ Active", TEGRA210_PEQ_CFG,
TEGRA210_PEQ_CFG_MODE_SHIFT, 1, 0,
tegra210_peq_get, tegra210_peq_put),
SOC_SINGLE_EXT("PEQ Biquad Stages", TEGRA210_PEQ_CFG,
TEGRA210_PEQ_CFG_BIQUAD_STAGES_SHIFT,
TEGRA210_PEQ_MAX_BIQUAD_STAGES - 1, 0,
tegra210_peq_get, tegra210_peq_put),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(0),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(1),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(2),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(3),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(4),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(5),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(6),
TEGRA210_PEQ_GAIN_PARAMS_CTRL(7),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(0),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(1),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(2),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(3),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(4),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(5),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(6),
TEGRA210_PEQ_SHIFT_PARAMS_CTRL(7),
};
static bool tegra210_peq_wr_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA210_PEQ_SOFT_RESET:
case TEGRA210_PEQ_CG:
case TEGRA210_PEQ_CFG ... TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
return true;
default:
return false;
}
}
static bool tegra210_peq_rd_reg(struct device *dev, unsigned int reg)
{
if (tegra210_peq_wr_reg(dev, reg))
return true;
switch (reg) {
case TEGRA210_PEQ_STATUS:
return true;
default:
return false;
}
}
static bool tegra210_peq_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA210_PEQ_SOFT_RESET:
case TEGRA210_PEQ_STATUS:
case TEGRA210_PEQ_CFG_RAM_CTRL ... TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
return true;
default:
return false;
}
}
static bool tegra210_peq_precious_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA210_PEQ_CFG_RAM_DATA:
case TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
return true;
default:
return false;
}
}
static const struct regmap_config tegra210_peq_regmap_config = {
.name = "peq",
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
.writeable_reg = tegra210_peq_wr_reg,
.readable_reg = tegra210_peq_rd_reg,
.volatile_reg = tegra210_peq_volatile_reg,
.precious_reg = tegra210_peq_precious_reg,
.reg_defaults = tegra210_peq_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tegra210_peq_reg_defaults),
.cache_type = REGCACHE_FLAT,
};
void tegra210_peq_restore(struct regmap *regmap, u32 *biquad_gains,
u32 *biquad_shifts)
{
unsigned int i;
for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
tegra210_peq_write_ram(regmap, TEGRA210_PEQ_CFG_RAM_CTRL,
TEGRA210_PEQ_CFG_RAM_DATA,
(i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
biquad_gains,
TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
tegra210_peq_write_ram(regmap,
TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
(i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
biquad_shifts,
TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
}
}
void tegra210_peq_save(struct regmap *regmap, u32 *biquad_gains,
u32 *biquad_shifts)
{
unsigned int i;
for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
tegra210_peq_read_ram(regmap,
TEGRA210_PEQ_CFG_RAM_CTRL,
TEGRA210_PEQ_CFG_RAM_DATA,
(i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
biquad_gains,
TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
tegra210_peq_read_ram(regmap,
TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
(i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
biquad_shifts,
TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
}
}
int tegra210_peq_component_init(struct snd_soc_component *cmpnt)
{
struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
unsigned int i;
pm_runtime_get_sync(cmpnt->dev);
regmap_update_bits(ope->peq_regmap, TEGRA210_PEQ_CFG,
TEGRA210_PEQ_CFG_MODE_MASK,
0 << TEGRA210_PEQ_CFG_MODE_SHIFT);
regmap_update_bits(ope->peq_regmap, TEGRA210_PEQ_CFG,
TEGRA210_PEQ_CFG_BIQUAD_STAGES_MASK,
(TEGRA210_PEQ_BIQUAD_INIT_STAGE - 1) <<
TEGRA210_PEQ_CFG_BIQUAD_STAGES_SHIFT);
/* Initialize PEQ AHUB RAM with default params */
for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
/* Set default gain params */
tegra210_peq_write_ram(ope->peq_regmap,
TEGRA210_PEQ_CFG_RAM_CTRL,
TEGRA210_PEQ_CFG_RAM_DATA,
(i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
(u32 *)&biquad_init_gains,
TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
/* Set default shift params */
tegra210_peq_write_ram(ope->peq_regmap,
TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
(i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
(u32 *)&biquad_init_shifts,
TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
}
pm_runtime_put_sync(cmpnt->dev);
snd_soc_add_component_controls(cmpnt, tegra210_peq_controls,
ARRAY_SIZE(tegra210_peq_controls));
return 0;
}
int tegra210_peq_regmap_init(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct tegra210_ope *ope = dev_get_drvdata(dev);
struct device_node *child;
struct resource mem;
void __iomem *regs;
int err;
child = of_get_child_by_name(dev->of_node, "equalizer");
if (!child)
return -ENODEV;
err = of_address_to_resource(child, 0, &mem);
of_node_put(child);
if (err < 0) {
dev_err(dev, "fail to get PEQ resource\n");
return err;
}
mem.flags = IORESOURCE_MEM;
regs = devm_ioremap_resource(dev, &mem);
if (IS_ERR(regs))
return PTR_ERR(regs);
ope->peq_regmap = devm_regmap_init_mmio(dev, regs,
&tegra210_peq_regmap_config);
if (IS_ERR(ope->peq_regmap)) {
dev_err(dev, "regmap init failed\n");
return PTR_ERR(ope->peq_regmap);
}
regcache_cache_only(ope->peq_regmap, true);
return 0;
}
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