// SPDX-License-Identifier: GPL-2.0-only
//
// tegra210_mixer.c - Tegra210 MIXER driver
//
// Copyright (c) 2021 NVIDIA CORPORATION. All rights reserved.
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/mod_devicetable.h>
#include <linux/module.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_mixer.h"
#include "tegra_cif.h"
#define MIXER_REG(reg, id) ((reg) + ((id) * TEGRA210_MIXER_REG_STRIDE))
#define MIXER_REG_BASE(reg) ((reg) % TEGRA210_MIXER_REG_STRIDE)
#define MIXER_GAIN_CFG_RAM_ADDR(id) \
(TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0 + \
((id) * TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE))
#define MIXER_RX_REG_DEFAULTS(id) \
{ MIXER_REG(TEGRA210_MIXER_RX1_CIF_CTRL, id), 0x00007700}, \
{ MIXER_REG(TEGRA210_MIXER_RX1_CTRL, id), 0x00010823}, \
{ MIXER_REG(TEGRA210_MIXER_RX1_PEAK_CTRL, id), 0x000012c0}
#define MIXER_TX_REG_DEFAULTS(id) \
{ MIXER_REG(TEGRA210_MIXER_TX1_INT_MASK, (id)), 0x00000001}, \
{ MIXER_REG(TEGRA210_MIXER_TX1_CIF_CTRL, (id)), 0x00007700}
#define REG_DURATION_PARAM(reg, i) ((reg) + NUM_GAIN_POLY_COEFFS + 1 + (i))
static const struct reg_default tegra210_mixer_reg_defaults[] = {
/* Inputs */
MIXER_RX_REG_DEFAULTS(0),
MIXER_RX_REG_DEFAULTS(1),
MIXER_RX_REG_DEFAULTS(2),
MIXER_RX_REG_DEFAULTS(3),
MIXER_RX_REG_DEFAULTS(4),
MIXER_RX_REG_DEFAULTS(5),
MIXER_RX_REG_DEFAULTS(6),
MIXER_RX_REG_DEFAULTS(7),
MIXER_RX_REG_DEFAULTS(8),
MIXER_RX_REG_DEFAULTS(9),
/* Outputs */
MIXER_TX_REG_DEFAULTS(0),
MIXER_TX_REG_DEFAULTS(1),
MIXER_TX_REG_DEFAULTS(2),
MIXER_TX_REG_DEFAULTS(3),
MIXER_TX_REG_DEFAULTS(4),
{ TEGRA210_MIXER_CG, 0x00000001},
{ TEGRA210_MIXER_GAIN_CFG_RAM_CTRL, 0x00004000},
{ TEGRA210_MIXER_PEAKM_RAM_CTRL, 0x00004000},
{ TEGRA210_MIXER_ENABLE, 0x1 },
};
/* Default gain parameters */
static const struct tegra210_mixer_gain_params gain_params = {
/* Polynomial coefficients */
{ 0, 0, 0, 0, 0, 0, 0, 0x1000000, 0 },
/* Gain value */
0x10000,
/* Duration Parameters */
{ 0, 0, 0x400, 0x8000000 },
};
static int __maybe_unused tegra210_mixer_runtime_suspend(struct device *dev)
{
struct tegra210_mixer *mixer = dev_get_drvdata(dev);
regcache_cache_only(mixer->regmap, true);
regcache_mark_dirty(mixer->regmap);
return 0;
}
static int __maybe_unused tegra210_mixer_runtime_resume(struct device *dev)
{
struct tegra210_mixer *mixer = dev_get_drvdata(dev);
regcache_cache_only(mixer->regmap, false);
regcache_sync(mixer->regmap);
return 0;
}
static int tegra210_mixer_write_ram(struct tegra210_mixer *mixer,
unsigned int addr,
unsigned int coef)
{
unsigned int reg, val;
int err;
/* Check if busy */
err = regmap_read_poll_timeout(mixer->regmap,
TEGRA210_MIXER_GAIN_CFG_RAM_CTRL,
val, !(val & 0x80000000), 10, 10000);
if (err < 0)
return err;
reg = (addr << TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_SHIFT) &
TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_MASK;
reg |= TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_INIT_EN;
reg |= TEGRA210_MIXER_GAIN_CFG_RAM_RW_WRITE;
reg |= TEGRA210_MIXER_GAIN_CFG_RAM_SEQ_ACCESS_EN;
regmap_write(mixer->regmap,
TEGRA210_MIXER_GAIN_CFG_RAM_CTRL,
reg);
regmap_write(mixer->regmap,
TEGRA210_MIXER_GAIN_CFG_RAM_DATA,
coef);
return 0;
}
static int tegra210_mixer_configure_gain(struct snd_soc_component *cmpnt,
unsigned int id, bool instant_gain)
{
struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
unsigned int reg = MIXER_GAIN_CFG_RAM_ADDR(id);
int err, i;
pm_runtime_get_sync(cmpnt->dev);
/* Write default gain poly coefficients */
for (i = 0; i < NUM_GAIN_POLY_COEFFS; i++) {
err = tegra210_mixer_write_ram(mixer, reg + i,
gain_params.poly_coeff[i]);
if (err < 0)
goto rpm_put;
}
/* Write stored gain value */
err = tegra210_mixer_write_ram(mixer, reg + NUM_GAIN_POLY_COEFFS,
mixer->gain_value[id]);
if (err < 0)
goto rpm_put;
/* Write duration parameters */
for (i = 0; i < NUM_DURATION_PARMS; i++) {
int val;
if (instant_gain)
val = 1;
else
val = gain_params.duration[i];
err = tegra210_mixer_write_ram(mixer,
REG_DURATION_PARAM(reg, i),
val);
if (err < 0)
goto rpm_put;
}
/* Trigger to apply gain configurations */
err = tegra210_mixer_write_ram(mixer, reg + REG_CFG_DONE_TRIGGER,
VAL_CFG_DONE_TRIGGER);
rpm_put:
pm_runtime_put(cmpnt->dev);
return err;
}
static int tegra210_mixer_get_gain(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_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
unsigned int reg = mc->reg;
unsigned int i;
i = (reg - TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0) /
TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE;
ucontrol->value.integer.value[0] = mixer->gain_value[i];
return 0;
}
static int tegra210_mixer_apply_gain(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol,
bool instant_gain)
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_mixer *mixer = snd_soc_component_get_drvdata(cmpnt);
unsigned int reg = mc->reg, id;
int err;
/* Save gain value for specific MIXER input */
id = (reg - TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0) /
TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE;
if (mixer->gain_value[id] == ucontrol->value.integer.value[0])
return 0;
mixer->gain_value[id] = ucontrol->value.integer.value[0];
err = tegra210_mixer_configure_gain(cmpnt, id, instant_gain);
if (err) {
dev_err(cmpnt->dev, "Failed to apply gain\n");
return err;
}
return 1;
}
static int tegra210_mixer_put_gain(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return tegra210_mixer_apply_gain(kcontrol, ucontrol, false);
}
static int tegra210_mixer_put_instant_gain(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return tegra210_mixer_apply_gain(kcontrol, ucontrol, true);
}
static int tegra210_mixer_set_audio_cif(struct tegra210_mixer *mixer,
struct snd_pcm_hw_params *params,
unsigned int reg,
unsigned int id)
{
unsigned int channels, audio_bits;
struct tegra_cif_conf cif_conf;
memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
channels = params_channels(params);
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
audio_bits = TEGRA_ACIF_BITS_16;
break;
case SNDRV_PCM_FORMAT_S32_LE:
audio_bits = TEGRA_ACIF_BITS_32;
break;
default:
return -EINVAL;
}
cif_conf.audio_ch = channels;
cif_conf.client_ch = channels;
cif_conf.audio_bits = audio_bits;
cif_conf.client_bits = audio_bits;
tegra_set_cif(mixer->regmap,
reg + (id * TEGRA210_MIXER_REG_STRIDE),
&cif_conf);
return 0;
}
static int tegra210_mixer_in_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct tegra210_mixer *mixer = snd_soc_dai_get_drvdata(dai);
int err;
err = tegra210_mixer_set_audio_cif(mixer, params,
TEGRA210_MIXER_RX1_CIF_CTRL,
dai->id);
if (err < 0)
return err;
return tegra210_mixer_configure_gain(dai->component, dai->id, false);
}
static int tegra210_mixer_out_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct tegra210_mixer *mixer = snd_soc_dai_get_drvdata(dai);
return tegra210_mixer_set_audio_cif(mixer, params,
TEGRA210_MIXER_TX1_CIF_CTRL,
dai->id - TEGRA210_MIXER_RX_MAX);
}
static const struct snd_soc_dai_ops tegra210_mixer_out_dai_ops = {
.hw_params = tegra210_mixer_out_hw_params,
};
static const struct snd_soc_dai_ops tegra210_mixer_in_dai_ops = {
.hw_params = tegra210_mixer_in_hw_params,
};
#define IN_DAI(id) \
{ \
.name = "MIXER-RX-CIF"#id, \
.playback = { \
.stream_name = "RX" #id "-CIF-Playback",\
.channels_min = 1, \
.channels_max = 8, \
.rates = SNDRV_PCM_RATE_8000_192000, \
.formats = SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S32_LE, \
}, \
.capture = { \
.stream_name = "RX" #id "-CIF-Capture", \
.channels_min = 1, \
.channels_max = 8, \
.rates = SNDRV_PCM_RATE_8000_192000, \
.formats = SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S32_LE, \
}, \
.ops = &tegra210_mixer_in_dai_ops, \
}
#define OUT_DAI(id) \
{ \
.name = "MIXER-TX-CIF" #id, \
.playback = { \
.stream_name = "TX" #id "-CIF-Playback",\
.channels_min = 1, \
.channels_max = 8, \
.rates = SNDRV_PCM_RATE_8000_192000, \
.formats = SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S32_LE, \
}, \
.capture = { \
.stream_name = "TX" #id "-CIF-Capture", \
.channels_min = 1, \
.channels_max = 8, \
.rates = SNDRV_PCM_RATE_8000_192000, \
.formats = SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S32_LE, \
}, \
.ops = &tegra210_mixer_out_dai_ops, \
}
static struct snd_soc_dai_driver tegra210_mixer_dais[] = {
/* Mixer Input */
IN_DAI(1),
IN_DAI(2),
IN_DAI(3),
IN_DAI(4),
IN_DAI(5),
IN_DAI(6),
IN_DAI(7),
IN_DAI(8),
IN_DAI(9),
IN_DAI(10),
/* Mixer Output */
OUT_DAI(1),
OUT_DAI(2),
OUT_DAI(3),
OUT_DAI(4),
OUT_DAI(5),
};
#define ADDER_CTRL_DECL(name, reg) \
static const struct snd_kcontrol_new name[] = { \
SOC_DAPM_SINGLE("RX1", reg, 0, 1, 0), \
SOC_DAPM_SINGLE("RX2", reg, 1, 1, 0), \
SOC_DAPM_SINGLE("RX3", reg, 2, 1, 0), \
SOC_DAPM_SINGLE("RX4", reg, 3, 1, 0), \
SOC_DAPM_SINGLE("RX5", reg, 4, 1, 0), \
SOC_DAPM_SINGLE("RX6", reg, 5, 1, 0), \
SOC_DAPM_SINGLE("RX7", reg, 6, 1, 0), \
SOC_DAPM_SINGLE("RX8", reg, 7, 1, 0), \
SOC_DAPM_SINGLE("RX9", reg, 8, 1, 0), \
SOC_DAPM_SINGLE("RX10", reg, 9, 1, 0), \
}
ADDER_CTRL_DECL(adder1, TEGRA210_MIXER_TX1_ADDER_CONFIG);
ADDER_CTRL_DECL(adder2, TEGRA210_MIXER_TX2_ADDER_CONFIG);
ADDER_CTRL_DECL(adder3, TEGRA210_MIXER_TX3_ADDER_CONFIG);
ADDER_CTRL_DECL(adder4, TEGRA210_MIXER_TX4_ADDER_CONFIG);
ADDER_CTRL_DECL(adder5, TEGRA210_MIXER_TX5_ADDER_CONFIG);
#define GAIN_CTRL(id) \
SOC_SINGLE_EXT("RX" #id " Gain Volume", \
MIXER_GAIN_CFG_RAM_ADDR((id) - 1), 0, \
0x20000, 0, tegra210_mixer_get_gain, \
tegra210_mixer_put_gain), \
SOC_SINGLE_EXT("RX" #id " Instant Gain Volume", \
MIXER_GAIN_CFG_RAM_ADDR((id) - 1), 0, \
0x20000, 0, tegra210_mixer_get_gain, \
tegra210_mixer_put_instant_gain),
/* Volume controls for all MIXER inputs */
static const struct snd_kcontrol_new tegra210_mixer_gain_ctls[] = {
GAIN_CTRL(1)
GAIN_CTRL(2)
GAIN_CTRL(3)
GAIN_CTRL(4)
GAIN_CTRL(5)
GAIN_CTRL(6)
GAIN_CTRL(7)
GAIN_CTRL(8)
GAIN_CTRL(9)
GAIN_CTRL(10)
};
static const struct snd_soc_dapm_widget tegra210_mixer_widgets[] = {
SND_SOC_DAPM_AIF_IN("RX1", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX2", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX3", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX4", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX5", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX6", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX7", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX8", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX9", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("RX10", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("TX1", NULL, 0, TEGRA210_MIXER_TX1_ENABLE, 0, 0),
SND_SOC_DAPM_AIF_OUT("TX2", NULL, 0, TEGRA210_MIXER_TX2_ENABLE, 0, 0),
SND_SOC_DAPM_AIF_OUT("TX3", NULL, 0, TEGRA210_MIXER_TX3_ENABLE, 0, 0),
SND_SOC_DAPM_AIF_OUT("TX4", NULL, 0, TEGRA210_MIXER_TX4_ENABLE, 0, 0),
SND_SOC_DAPM_AIF_OUT("TX5", NULL, 0, TEGRA210_MIXER_TX5_ENABLE, 0, 0),
SND_SOC_DAPM_MIXER("Adder1", SND_SOC_NOPM, 1, 0, adder1,
ARRAY_SIZE(adder1)),
SND_SOC_DAPM_MIXER("Adder2", SND_SOC_NOPM, 1, 0, adder2,
ARRAY_SIZE(adder2)),
SND_SOC_DAPM_MIXER("Adder3", SND_SOC_NOPM, 1, 0, adder3,
ARRAY_SIZE(adder3)),
SND_SOC_DAPM_MIXER("Adder4", SND_SOC_NOPM, 1, 0, adder4,
ARRAY_SIZE(adder4)),
SND_SOC_DAPM_MIXER("Adder5", SND_SOC_NOPM, 1, 0, adder5,
ARRAY_SIZE(adder5)),
};
#define RX_ROUTES(id, sname) \
{ "RX" #id " XBAR-" sname, NULL, "RX" #id " XBAR-TX" }, \
{ "RX" #id "-CIF-" sname, NULL, "RX" #id " XBAR-" sname }, \
{ "RX" #id, NULL, "RX" #id "-CIF-" sname }
#define MIXER_RX_ROUTES(id) \
RX_ROUTES(id, "Playback"), \
RX_ROUTES(id, "Capture")
#define ADDER_ROUTES(id, sname) \
{ "Adder" #id, "RX1", "RX1" }, \
{ "Adder" #id, "RX2", "RX2" }, \
{ "Adder" #id, "RX3", "RX3" }, \
{ "Adder" #id, "RX4", "RX4" }, \
{ "Adder" #id, "RX5", "RX5" }, \
{ "Adder" #id, "RX6", "RX6" }, \
{ "Adder" #id, "RX7", "RX7" }, \
{ "Adder" #id, "RX8", "RX8" }, \
{ "Adder" #id, "RX9", "RX9" }, \
{ "Adder" #id, "RX10", "RX10" }, \
{ "TX" #id, NULL, "Adder" #id }, \
{ "TX" #id "-CIF-" sname, NULL, "TX" #id }, \
{ "TX" #id " XBAR-" sname, NULL, "TX" #id "-CIF-" sname }, \
{ "TX" #id " XBAR-RX", NULL, "TX" #id " XBAR-" sname } \
#define TX_ROUTES(id, sname) \
ADDER_ROUTES(1, sname), \
ADDER_ROUTES(2, sname), \
ADDER_ROUTES(3, sname), \
ADDER_ROUTES(4, sname), \
ADDER_ROUTES(5, sname)
#define MIXER_TX_ROUTES(id) \
TX_ROUTES(id, "Playback"), \
TX_ROUTES(id, "Capture")
static const struct snd_soc_dapm_route tegra210_mixer_routes[] = {
/* Input */
MIXER_RX_ROUTES(1),
MIXER_RX_ROUTES(2),
MIXER_RX_ROUTES(3),
MIXER_RX_ROUTES(4),
MIXER_RX_ROUTES(5),
MIXER_RX_ROUTES(6),
MIXER_RX_ROUTES(7),
MIXER_RX_ROUTES(8),
MIXER_RX_ROUTES(9),
MIXER_RX_ROUTES(10),
/* Output */
MIXER_TX_ROUTES(1),
MIXER_TX_ROUTES(2),
MIXER_TX_ROUTES(3),
MIXER_TX_ROUTES(4),
MIXER_TX_ROUTES(5),
};
static const struct snd_soc_component_driver tegra210_mixer_cmpnt = {
.dapm_widgets = tegra210_mixer_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra210_mixer_widgets),
.dapm_routes = tegra210_mixer_routes,
.num_dapm_routes = ARRAY_SIZE(tegra210_mixer_routes),
.controls = tegra210_mixer_gain_ctls,
.num_controls = ARRAY_SIZE(tegra210_mixer_gain_ctls),
};
static bool tegra210_mixer_wr_reg(struct device *dev,
unsigned int reg)
{
if (reg < TEGRA210_MIXER_RX_LIMIT)
reg = MIXER_REG_BASE(reg);
else if (reg < TEGRA210_MIXER_TX_LIMIT)
reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
switch (reg) {
case TEGRA210_MIXER_RX1_SOFT_RESET:
case TEGRA210_MIXER_RX1_CIF_CTRL ... TEGRA210_MIXER_RX1_PEAK_CTRL:
case TEGRA210_MIXER_TX1_ENABLE:
case TEGRA210_MIXER_TX1_SOFT_RESET:
case TEGRA210_MIXER_TX1_INT_MASK ... TEGRA210_MIXER_TX1_ADDER_CONFIG:
case TEGRA210_MIXER_ENABLE ... TEGRA210_MIXER_CG:
case TEGRA210_MIXER_GAIN_CFG_RAM_CTRL ... TEGRA210_MIXER_CTRL:
return true;
default:
return false;
}
}
static bool tegra210_mixer_rd_reg(struct device *dev,
unsigned int reg)
{
if (reg < TEGRA210_MIXER_RX_LIMIT)
reg = MIXER_REG_BASE(reg);
else if (reg < TEGRA210_MIXER_TX_LIMIT)
reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
switch (reg) {
case TEGRA210_MIXER_RX1_SOFT_RESET ... TEGRA210_MIXER_RX1_SAMPLE_COUNT:
case TEGRA210_MIXER_TX1_ENABLE ... TEGRA210_MIXER_TX1_ADDER_CONFIG:
case TEGRA210_MIXER_ENABLE ... TEGRA210_MIXER_CTRL:
return true;
default:
return false;
}
}
static bool tegra210_mixer_volatile_reg(struct device *dev,
unsigned int reg)
{
if (reg < TEGRA210_MIXER_RX_LIMIT)
reg = MIXER_REG_BASE(reg);
else if (reg < TEGRA210_MIXER_TX_LIMIT)
reg = MIXER_REG_BASE(reg) + TEGRA210_MIXER_TX1_ENABLE;
switch (reg) {
case TEGRA210_MIXER_RX1_SOFT_RESET:
case TEGRA210_MIXER_RX1_STATUS:
case TEGRA210_MIXER_TX1_SOFT_RESET:
case TEGRA210_MIXER_TX1_STATUS:
case TEGRA210_MIXER_TX1_INT_STATUS:
case TEGRA210_MIXER_TX1_INT_SET:
case TEGRA210_MIXER_SOFT_RESET:
case TEGRA210_MIXER_STATUS:
case TEGRA210_MIXER_INT_STATUS:
case TEGRA210_MIXER_GAIN_CFG_RAM_CTRL:
case TEGRA210_MIXER_GAIN_CFG_RAM_DATA:
case TEGRA210_MIXER_PEAKM_RAM_CTRL:
case TEGRA210_MIXER_PEAKM_RAM_DATA:
return true;
default:
return false;
}
}
static bool tegra210_mixer_precious_reg(struct device *dev,
unsigned int reg)
{
switch (reg) {
case TEGRA210_MIXER_GAIN_CFG_RAM_DATA:
case TEGRA210_MIXER_PEAKM_RAM_DATA:
return true;
default:
return false;
}
}
static const struct regmap_config tegra210_mixer_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = TEGRA210_MIXER_CTRL,
.writeable_reg = tegra210_mixer_wr_reg,
.readable_reg = tegra210_mixer_rd_reg,
.volatile_reg = tegra210_mixer_volatile_reg,
.precious_reg = tegra210_mixer_precious_reg,
.reg_defaults = tegra210_mixer_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tegra210_mixer_reg_defaults),
.cache_type = REGCACHE_FLAT,
};
static const struct of_device_id tegra210_mixer_of_match[] = {
{ .compatible = "nvidia,tegra210-amixer" },
{},
};
MODULE_DEVICE_TABLE(of, tegra210_mixer_of_match);
static int tegra210_mixer_platform_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct tegra210_mixer *mixer;
void __iomem *regs;
int err, i;
mixer = devm_kzalloc(dev, sizeof(*mixer), GFP_KERNEL);
if (!mixer)
return -ENOMEM;
dev_set_drvdata(dev, mixer);
/* Use default gain value for all MIXER inputs */
for (i = 0; i < TEGRA210_MIXER_RX_MAX; i++)
mixer->gain_value[i] = gain_params.gain_value;
regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(regs))
return PTR_ERR(regs);
mixer->regmap = devm_regmap_init_mmio(dev, regs,
&tegra210_mixer_regmap_config);
if (IS_ERR(mixer->regmap)) {
dev_err(dev, "regmap init failed\n");
return PTR_ERR(mixer->regmap);
}
regcache_cache_only(mixer->regmap, true);
err = devm_snd_soc_register_component(dev, &tegra210_mixer_cmpnt,
tegra210_mixer_dais,
ARRAY_SIZE(tegra210_mixer_dais));
if (err) {
dev_err(dev, "can't register MIXER component, err: %d\n", err);
return err;
}
pm_runtime_enable(dev);
return 0;
}
static void tegra210_mixer_platform_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
}
static const struct dev_pm_ops tegra210_mixer_pm_ops = {
SET_RUNTIME_PM_OPS(tegra210_mixer_runtime_suspend,
tegra210_mixer_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static struct platform_driver tegra210_mixer_driver = {
.driver = {
.name = "tegra210_mixer",
.of_match_table = tegra210_mixer_of_match,
.pm = &tegra210_mixer_pm_ops,
},
.probe = tegra210_mixer_platform_probe,
.remove = tegra210_mixer_platform_remove,
};
module_platform_driver(tegra210_mixer_driver);
MODULE_AUTHOR("Arun Shamanna Lakshmi <[email protected]>");
MODULE_DESCRIPTION("Tegra210 MIXER ASoC driver");
MODULE_LICENSE("GPL v2");
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