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linux/sound/soc/tegra/tegra210_mvc.c
Sameer Pujar 0d242698fa
ASoC: tegra: Add master volume/mute control support 
The MVC module has a per channel control bit, based on which it decides
to apply channel specific volume/mute settings. When per channel control
bit is enabled (which is the default HW configuration), all MVC channel
volume/mute can be independently controlled. If the control is disabled,
channel-0 volume/mute setting is applied by HW to all remaining channels.
Thus add support to leverage this HW feature by exposing master controls
for volume/mute.

With this, now there are per channel and master volume/mute controls.
Users need to just use controls which are suitable for their applications.
The per channel control enable/disable is mananged in driver and hidden
from users, so that they need to just worry about respective volume/mute
controls.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/1638278605-28225-1-git-send-email-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-12-01 14:15:39 +00:00

779 lines
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// SPDX-License-Identifier: GPL-2.0-only
//
// tegra210_mvc.c - Tegra210 MVC driver
//
// Copyright (c) 2021 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_device.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_mvc.h"
#include "tegra_cif.h"
static const struct reg_default tegra210_mvc_reg_defaults[] = {
{ TEGRA210_MVC_RX_INT_MASK, 0x00000001},
{ TEGRA210_MVC_RX_CIF_CTRL, 0x00007700},
{ TEGRA210_MVC_TX_INT_MASK, 0x00000001},
{ TEGRA210_MVC_TX_CIF_CTRL, 0x00007700},
{ TEGRA210_MVC_CG, 0x1},
{ TEGRA210_MVC_CTRL, TEGRA210_MVC_CTRL_DEFAULT},
{ TEGRA210_MVC_INIT_VOL, 0x00800000},
{ TEGRA210_MVC_TARGET_VOL, 0x00800000},
{ TEGRA210_MVC_DURATION, 0x000012c0},
{ TEGRA210_MVC_DURATION_INV, 0x0006d3a0},
{ TEGRA210_MVC_POLY_N1, 0x0000007d},
{ TEGRA210_MVC_POLY_N2, 0x00000271},
{ TEGRA210_MVC_PEAK_CTRL, 0x000012c0},
{ TEGRA210_MVC_CFG_RAM_CTRL, 0x00004000},
};
static const struct tegra210_mvc_gain_params gain_params = {
.poly_coeff = { 23738319, 659403, -3680,
15546680, 2530732, -120985,
12048422, 5527252, -785042 },
.poly_n1 = 16,
.poly_n2 = 63,
.duration = 150,
.duration_inv = 14316558,
};
static int __maybe_unused tegra210_mvc_runtime_suspend(struct device *dev)
{
struct tegra210_mvc *mvc = dev_get_drvdata(dev);
regmap_read(mvc->regmap, TEGRA210_MVC_CTRL, &(mvc->ctrl_value));
regcache_cache_only(mvc->regmap, true);
regcache_mark_dirty(mvc->regmap);
return 0;
}
static int __maybe_unused tegra210_mvc_runtime_resume(struct device *dev)
{
struct tegra210_mvc *mvc = dev_get_drvdata(dev);
regcache_cache_only(mvc->regmap, false);
regcache_sync(mvc->regmap);
regmap_write(mvc->regmap, TEGRA210_MVC_CTRL, mvc->ctrl_value);
regmap_update_bits(mvc->regmap,
TEGRA210_MVC_SWITCH,
TEGRA210_MVC_VOLUME_SWITCH_MASK,
TEGRA210_MVC_VOLUME_SWITCH_TRIGGER);
return 0;
}
static void tegra210_mvc_write_ram(struct regmap *regmap)
{
int i;
regmap_write(regmap, TEGRA210_MVC_CFG_RAM_CTRL,
TEGRA210_MVC_CFG_RAM_CTRL_SEQ_ACCESS_EN |
TEGRA210_MVC_CFG_RAM_CTRL_ADDR_INIT_EN |
TEGRA210_MVC_CFG_RAM_CTRL_RW_WRITE);
for (i = 0; i < NUM_GAIN_POLY_COEFFS; i++)
regmap_write(regmap, TEGRA210_MVC_CFG_RAM_DATA,
gain_params.poly_coeff[i]);
}
static void tegra210_mvc_conv_vol(struct tegra210_mvc *mvc, u8 chan, s32 val)
{
/*
* Volume control read from mixer control is with
* 100x scaling; for CURVE_POLY the reg range
* is 0-100 (linear, Q24) and for CURVE_LINEAR
* it is -120dB to +40dB (Q8)
*/
if (mvc->curve_type == CURVE_POLY) {
if (val > 10000)
val = 10000;
mvc->volume[chan] = ((val * (1<<8)) / 100) << 16;
} else {
val -= 12000;
mvc->volume[chan] = (val * (1<<8)) / 100;
}
}
static u32 tegra210_mvc_get_ctrl_reg(struct snd_kcontrol *kcontrol)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_mvc *mvc = snd_soc_component_get_drvdata(cmpnt);
u32 val;
pm_runtime_get_sync(cmpnt->dev);
regmap_read(mvc->regmap, TEGRA210_MVC_CTRL, &val);
pm_runtime_put(cmpnt->dev);
return val;
}
static int tegra210_mvc_get_mute(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
u32 val = tegra210_mvc_get_ctrl_reg(kcontrol);
u8 mute_mask = TEGRA210_GET_MUTE_VAL(val);
/*
* If per channel control is enabled, then return
* exact mute/unmute setting of all channels.
*
* Else report setting based on CH0 bit to reflect
* the correct HW state.
*/
if (val & TEGRA210_MVC_PER_CHAN_CTRL_EN) {
ucontrol->value.integer.value[0] = mute_mask;
} else {
if (mute_mask & TEGRA210_MVC_CH0_MUTE_EN)
ucontrol->value.integer.value[0] =
TEGRA210_MUTE_MASK_EN;
else
ucontrol->value.integer.value[0] = 0;
}
return 0;
}
static int tegra210_mvc_get_master_mute(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
u32 val = tegra210_mvc_get_ctrl_reg(kcontrol);
u8 mute_mask = TEGRA210_GET_MUTE_VAL(val);
/*
* If per channel control is disabled, then return
* master mute/unmute setting based on CH0 bit.
*
* Else report settings based on state of all
* channels.
*/
if (!(val & TEGRA210_MVC_PER_CHAN_CTRL_EN)) {
ucontrol->value.integer.value[0] =
mute_mask & TEGRA210_MVC_CH0_MUTE_EN;
} else {
if (mute_mask == TEGRA210_MUTE_MASK_EN)
ucontrol->value.integer.value[0] =
TEGRA210_MVC_CH0_MUTE_EN;
else
ucontrol->value.integer.value[0] = 0;
}
return 0;
}
static int tegra210_mvc_volume_switch_timeout(struct snd_soc_component *cmpnt)
{
struct tegra210_mvc *mvc = snd_soc_component_get_drvdata(cmpnt);
u32 value;
int err;
err = regmap_read_poll_timeout(mvc->regmap, TEGRA210_MVC_SWITCH,
value, !(value & TEGRA210_MVC_VOLUME_SWITCH_MASK),
10, 10000);
if (err < 0)
dev_err(cmpnt->dev,
"Volume switch trigger is still active, err = %d\n",
err);
return err;
}
static int tegra210_mvc_update_mute(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol,
bool per_chan_ctrl)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_mvc *mvc = snd_soc_component_get_drvdata(cmpnt);
u32 mute_val = ucontrol->value.integer.value[0];
u32 per_ch_ctrl_val;
bool change = false;
int err;
pm_runtime_get_sync(cmpnt->dev);
err = tegra210_mvc_volume_switch_timeout(cmpnt);
if (err < 0)
goto end;
if (per_chan_ctrl) {
per_ch_ctrl_val = TEGRA210_MVC_PER_CHAN_CTRL_EN;
} else {
per_ch_ctrl_val = 0;
if (mute_val)
mute_val = TEGRA210_MUTE_MASK_EN;
}
regmap_update_bits_check(mvc->regmap, TEGRA210_MVC_CTRL,
TEGRA210_MVC_MUTE_MASK,
mute_val << TEGRA210_MVC_MUTE_SHIFT,
&change);
if (change) {
regmap_update_bits(mvc->regmap, TEGRA210_MVC_CTRL,
TEGRA210_MVC_PER_CHAN_CTRL_EN_MASK,
per_ch_ctrl_val);
regmap_update_bits(mvc->regmap, TEGRA210_MVC_SWITCH,
TEGRA210_MVC_VOLUME_SWITCH_MASK,
TEGRA210_MVC_VOLUME_SWITCH_TRIGGER);
}
end:
pm_runtime_put(cmpnt->dev);
if (err < 0)
return err;
if (change)
return 1;
return 0;
}
static int tegra210_mvc_put_mute(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return tegra210_mvc_update_mute(kcontrol, ucontrol, true);
}
static int tegra210_mvc_put_master_mute(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return tegra210_mvc_update_mute(kcontrol, ucontrol, false);
}
static int tegra210_mvc_get_vol(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_mvc *mvc = snd_soc_component_get_drvdata(cmpnt);
u8 chan = TEGRA210_MVC_GET_CHAN(mc->reg, TEGRA210_MVC_TARGET_VOL);
s32 val = mvc->volume[chan];
if (mvc->curve_type == CURVE_POLY) {
val = ((val >> 16) * 100) >> 8;
} else {
val = (val * 100) >> 8;
val += 12000;
}
ucontrol->value.integer.value[0] = val;
return 0;
}
static int tegra210_mvc_get_master_vol(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return tegra210_mvc_get_vol(kcontrol, ucontrol);
}
static int tegra210_mvc_update_vol(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol,
bool per_ch_enable)
{
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_mvc *mvc = snd_soc_component_get_drvdata(cmpnt);
u8 chan = TEGRA210_MVC_GET_CHAN(mc->reg, TEGRA210_MVC_TARGET_VOL);
int old_volume = mvc->volume[chan];
int err, i;
pm_runtime_get_sync(cmpnt->dev);
err = tegra210_mvc_volume_switch_timeout(cmpnt);
if (err < 0)
goto end;
tegra210_mvc_conv_vol(mvc, chan, ucontrol->value.integer.value[0]);
if (mvc->volume[chan] == old_volume) {
err = 0;
goto end;
}
if (per_ch_enable) {
regmap_update_bits(mvc->regmap, TEGRA210_MVC_CTRL,
TEGRA210_MVC_PER_CHAN_CTRL_EN_MASK,
TEGRA210_MVC_PER_CHAN_CTRL_EN);
} else {
regmap_update_bits(mvc->regmap, TEGRA210_MVC_CTRL,
TEGRA210_MVC_PER_CHAN_CTRL_EN_MASK, 0);
for (i = 1; i < TEGRA210_MVC_MAX_CHAN_COUNT; i++)
mvc->volume[i] = mvc->volume[chan];
}
/* Configure init volume same as target volume */
regmap_write(mvc->regmap,
TEGRA210_MVC_REG_OFFSET(TEGRA210_MVC_INIT_VOL, chan),
mvc->volume[chan]);
regmap_write(mvc->regmap, mc->reg, mvc->volume[chan]);
regmap_update_bits(mvc->regmap, TEGRA210_MVC_SWITCH,
TEGRA210_MVC_VOLUME_SWITCH_MASK,
TEGRA210_MVC_VOLUME_SWITCH_TRIGGER);
err = 1;
end:
pm_runtime_put(cmpnt->dev);
return err;
}
static int tegra210_mvc_put_vol(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return tegra210_mvc_update_vol(kcontrol, ucontrol, true);
}
static int tegra210_mvc_put_master_vol(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return tegra210_mvc_update_vol(kcontrol, ucontrol, false);
}
static void tegra210_mvc_reset_vol_settings(struct tegra210_mvc *mvc,
struct device *dev)
{
int i;
/* Change volume to default init for new curve type */
if (mvc->curve_type == CURVE_POLY) {
for (i = 0; i < TEGRA210_MVC_MAX_CHAN_COUNT; i++)
mvc->volume[i] = TEGRA210_MVC_INIT_VOL_DEFAULT_POLY;
} else {
for (i = 0; i < TEGRA210_MVC_MAX_CHAN_COUNT; i++)
mvc->volume[i] = TEGRA210_MVC_INIT_VOL_DEFAULT_LINEAR;
}
pm_runtime_get_sync(dev);
/* Program curve type */
regmap_update_bits(mvc->regmap, TEGRA210_MVC_CTRL,
TEGRA210_MVC_CURVE_TYPE_MASK,
mvc->curve_type <<
TEGRA210_MVC_CURVE_TYPE_SHIFT);
/* Init volume for all channels */
for (i = 0; i < TEGRA210_MVC_MAX_CHAN_COUNT; i++) {
regmap_write(mvc->regmap,
TEGRA210_MVC_REG_OFFSET(TEGRA210_MVC_INIT_VOL, i),
mvc->volume[i]);
regmap_write(mvc->regmap,
TEGRA210_MVC_REG_OFFSET(TEGRA210_MVC_TARGET_VOL, i),
mvc->volume[i]);
}
/* Trigger volume switch */
regmap_update_bits(mvc->regmap, TEGRA210_MVC_SWITCH,
TEGRA210_MVC_VOLUME_SWITCH_MASK,
TEGRA210_MVC_VOLUME_SWITCH_TRIGGER);
pm_runtime_put(dev);
}
static int tegra210_mvc_get_curve_type(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_mvc *mvc = snd_soc_component_get_drvdata(cmpnt);
ucontrol->value.enumerated.item[0] = mvc->curve_type;
return 0;
}
static int tegra210_mvc_put_curve_type(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra210_mvc *mvc = snd_soc_component_get_drvdata(cmpnt);
unsigned int value;
regmap_read(mvc->regmap, TEGRA210_MVC_ENABLE, &value);
if (value & TEGRA210_MVC_EN) {
dev_err(cmpnt->dev,
"Curve type can't be set when MVC is running\n");
return -EINVAL;
}
if (mvc->curve_type == ucontrol->value.enumerated.item[0])
return 0;
mvc->curve_type = ucontrol->value.enumerated.item[0];
tegra210_mvc_reset_vol_settings(mvc, cmpnt->dev);
return 1;
}
static int tegra210_mvc_set_audio_cif(struct tegra210_mvc *mvc,
struct snd_pcm_hw_params *params,
unsigned int reg)
{
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(mvc->regmap, reg, &cif_conf);
return 0;
}
static int tegra210_mvc_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct device *dev = dai->dev;
struct tegra210_mvc *mvc = snd_soc_dai_get_drvdata(dai);
int err, val;
/*
* Soft Reset: Below performs module soft reset which clears
* all FSM logic, flushes flow control of FIFO and resets the
* state register. It also brings module back to disabled
* state (without flushing the data in the pipe).
*/
regmap_write(mvc->regmap, TEGRA210_MVC_SOFT_RESET, 1);
err = regmap_read_poll_timeout(mvc->regmap, TEGRA210_MVC_SOFT_RESET,
val, !val, 10, 10000);
if (err < 0) {
dev_err(dev, "SW reset failed, err = %d\n", err);
return err;
}
/* Set RX CIF */
err = tegra210_mvc_set_audio_cif(mvc, params, TEGRA210_MVC_RX_CIF_CTRL);
if (err) {
dev_err(dev, "Can't set MVC RX CIF: %d\n", err);
return err;
}
/* Set TX CIF */
err = tegra210_mvc_set_audio_cif(mvc, params, TEGRA210_MVC_TX_CIF_CTRL);
if (err) {
dev_err(dev, "Can't set MVC TX CIF: %d\n", err);
return err;
}
tegra210_mvc_write_ram(mvc->regmap);
/* Program poly_n1, poly_n2, duration */
regmap_write(mvc->regmap, TEGRA210_MVC_POLY_N1, gain_params.poly_n1);
regmap_write(mvc->regmap, TEGRA210_MVC_POLY_N2, gain_params.poly_n2);
regmap_write(mvc->regmap, TEGRA210_MVC_DURATION, gain_params.duration);
/* Program duration_inv */
regmap_write(mvc->regmap, TEGRA210_MVC_DURATION_INV,
gain_params.duration_inv);
return 0;
}
static const struct snd_soc_dai_ops tegra210_mvc_dai_ops = {
.hw_params = tegra210_mvc_hw_params,
};
static const char * const tegra210_mvc_curve_type_text[] = {
"Poly",
"Linear",
};
static const struct soc_enum tegra210_mvc_curve_type_ctrl =
SOC_ENUM_SINGLE_EXT(2, tegra210_mvc_curve_type_text);
#define TEGRA210_MVC_VOL_CTRL(chan) \
SOC_SINGLE_EXT("Channel" #chan " Volume", \
TEGRA210_MVC_REG_OFFSET(TEGRA210_MVC_TARGET_VOL, \
(chan - 1)), \
0, 16000, 0, tegra210_mvc_get_vol, \
tegra210_mvc_put_vol)
static const struct snd_kcontrol_new tegra210_mvc_vol_ctrl[] = {
/* Per channel volume control */
TEGRA210_MVC_VOL_CTRL(1),
TEGRA210_MVC_VOL_CTRL(2),
TEGRA210_MVC_VOL_CTRL(3),
TEGRA210_MVC_VOL_CTRL(4),
TEGRA210_MVC_VOL_CTRL(5),
TEGRA210_MVC_VOL_CTRL(6),
TEGRA210_MVC_VOL_CTRL(7),
TEGRA210_MVC_VOL_CTRL(8),
/* Per channel mute */
SOC_SINGLE_EXT("Per Chan Mute Mask",
TEGRA210_MVC_CTRL, 0, TEGRA210_MUTE_MASK_EN, 0,
tegra210_mvc_get_mute, tegra210_mvc_put_mute),
/* Master volume */
SOC_SINGLE_EXT("Volume", TEGRA210_MVC_TARGET_VOL, 0, 16000, 0,
tegra210_mvc_get_master_vol,
tegra210_mvc_put_master_vol),
/* Master mute */
SOC_SINGLE_EXT("Mute", TEGRA210_MVC_CTRL, 0, 1, 0,
tegra210_mvc_get_master_mute,
tegra210_mvc_put_master_mute),
SOC_ENUM_EXT("Curve Type", tegra210_mvc_curve_type_ctrl,
tegra210_mvc_get_curve_type, tegra210_mvc_put_curve_type),
};
static struct snd_soc_dai_driver tegra210_mvc_dais[] = {
/* Input */
{
.name = "MVC-RX-CIF",
.playback = {
.stream_name = "RX-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-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,
},
},
/* Output */
{
.name = "MVC-TX-CIF",
.playback = {
.stream_name = "TX-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-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_mvc_dai_ops,
}
};
static const struct snd_soc_dapm_widget tegra210_mvc_widgets[] = {
SND_SOC_DAPM_AIF_IN("RX", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("TX", NULL, 0, TEGRA210_MVC_ENABLE,
TEGRA210_MVC_EN_SHIFT, 0),
};
#define MVC_ROUTES(sname) \
{ "RX XBAR-" sname, NULL, "XBAR-TX" }, \
{ "RX-CIF-" sname, NULL, "RX XBAR-" sname }, \
{ "RX", NULL, "RX-CIF-" sname }, \
{ "TX-CIF-" sname, NULL, "TX" }, \
{ "TX XBAR-" sname, NULL, "TX-CIF-" sname }, \
{ "XBAR-RX", NULL, "TX XBAR-" sname }
static const struct snd_soc_dapm_route tegra210_mvc_routes[] = {
{ "TX", NULL, "RX" },
MVC_ROUTES("Playback"),
MVC_ROUTES("Capture"),
};
static const struct snd_soc_component_driver tegra210_mvc_cmpnt = {
.dapm_widgets = tegra210_mvc_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra210_mvc_widgets),
.dapm_routes = tegra210_mvc_routes,
.num_dapm_routes = ARRAY_SIZE(tegra210_mvc_routes),
.controls = tegra210_mvc_vol_ctrl,
.num_controls = ARRAY_SIZE(tegra210_mvc_vol_ctrl),
};
static bool tegra210_mvc_rd_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA210_MVC_RX_STATUS ... TEGRA210_MVC_CONFIG_ERR_TYPE:
return true;
default:
return false;
};
}
static bool tegra210_mvc_wr_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA210_MVC_RX_INT_MASK ... TEGRA210_MVC_RX_CIF_CTRL:
case TEGRA210_MVC_TX_INT_MASK ... TEGRA210_MVC_TX_CIF_CTRL:
case TEGRA210_MVC_ENABLE ... TEGRA210_MVC_CG:
case TEGRA210_MVC_CTRL ... TEGRA210_MVC_CFG_RAM_DATA:
return true;
default:
return false;
}
}
static bool tegra210_mvc_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA210_MVC_RX_STATUS:
case TEGRA210_MVC_RX_INT_STATUS:
case TEGRA210_MVC_RX_INT_SET:
case TEGRA210_MVC_TX_STATUS:
case TEGRA210_MVC_TX_INT_STATUS:
case TEGRA210_MVC_TX_INT_SET:
case TEGRA210_MVC_SOFT_RESET:
case TEGRA210_MVC_STATUS:
case TEGRA210_MVC_INT_STATUS:
case TEGRA210_MVC_SWITCH:
case TEGRA210_MVC_CFG_RAM_CTRL:
case TEGRA210_MVC_CFG_RAM_DATA:
case TEGRA210_MVC_PEAK_VALUE:
case TEGRA210_MVC_CTRL:
return true;
default:
return false;
}
}
static const struct regmap_config tegra210_mvc_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = TEGRA210_MVC_CONFIG_ERR_TYPE,
.writeable_reg = tegra210_mvc_wr_reg,
.readable_reg = tegra210_mvc_rd_reg,
.volatile_reg = tegra210_mvc_volatile_reg,
.reg_defaults = tegra210_mvc_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tegra210_mvc_reg_defaults),
.cache_type = REGCACHE_FLAT,
};
static const struct of_device_id tegra210_mvc_of_match[] = {
{ .compatible = "nvidia,tegra210-mvc" },
{},
};
MODULE_DEVICE_TABLE(of, tegra210_mvc_of_match);
static int tegra210_mvc_platform_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct tegra210_mvc *mvc;
void __iomem *regs;
int err;
mvc = devm_kzalloc(dev, sizeof(*mvc), GFP_KERNEL);
if (!mvc)
return -ENOMEM;
dev_set_drvdata(dev, mvc);
mvc->curve_type = CURVE_LINEAR;
mvc->ctrl_value = TEGRA210_MVC_CTRL_DEFAULT;
regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(regs))
return PTR_ERR(regs);
mvc->regmap = devm_regmap_init_mmio(dev, regs,
&tegra210_mvc_regmap_config);
if (IS_ERR(mvc->regmap)) {
dev_err(dev, "regmap init failed\n");
return PTR_ERR(mvc->regmap);
}
regcache_cache_only(mvc->regmap, true);
err = devm_snd_soc_register_component(dev, &tegra210_mvc_cmpnt,
tegra210_mvc_dais,
ARRAY_SIZE(tegra210_mvc_dais));
if (err) {
dev_err(dev, "can't register MVC component, err: %d\n", err);
return err;
}
pm_runtime_enable(dev);
tegra210_mvc_reset_vol_settings(mvc, &pdev->dev);
return 0;
}
static int tegra210_mvc_platform_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
return 0;
}
static const struct dev_pm_ops tegra210_mvc_pm_ops = {
SET_RUNTIME_PM_OPS(tegra210_mvc_runtime_suspend,
tegra210_mvc_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static struct platform_driver tegra210_mvc_driver = {
.driver = {
.name = "tegra210-mvc",
.of_match_table = tegra210_mvc_of_match,
.pm = &tegra210_mvc_pm_ops,
},
.probe = tegra210_mvc_platform_probe,
.remove = tegra210_mvc_platform_remove,
};
module_platform_driver(tegra210_mvc_driver)
MODULE_AUTHOR("Arun Shamanna Lakshmi <aruns@nvidia.com>");
MODULE_DESCRIPTION("Tegra210 MVC ASoC driver");
MODULE_LICENSE("GPL v2");
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