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linux/sound/soc/tegra/tegra210_mvc.c
Uwe Kleine-König f94195ff02
ASoC: tegra: tegra210_mvc: Convert to platform remove callback returning void 
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20230315150745.67084-157-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-03-20 13:09:21 +00:00

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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 void tegra210_mvc_platform_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
}
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_new = 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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