linux/sound/soc/sof/control.c

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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//
/* Mixer Controls */
#include <linux/pm_runtime.h>
#include <linux/leds.h>
#include "sof-priv.h"
#include "sof-audio.h"
static void update_mute_led(struct snd_sof_control *scontrol,
struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
unsigned int temp = 0;
unsigned int mask;
int i;
mask = 1U << snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
for (i = 0; i < scontrol->num_channels; i++) {
if (ucontrol->value.integer.value[i]) {
temp |= mask;
break;
}
}
if (temp == scontrol->led_ctl.led_value)
return;
scontrol->led_ctl.led_value = temp;
#if IS_REACHABLE(CONFIG_LEDS_TRIGGER_AUDIO)
if (!scontrol->led_ctl.direction)
ledtrig_audio_set(LED_AUDIO_MUTE, temp ? LED_OFF : LED_ON);
else
ledtrig_audio_set(LED_AUDIO_MICMUTE, temp ? LED_OFF : LED_ON);
#endif
}
static inline u32 mixer_to_ipc(unsigned int value, u32 *volume_map, int size)
{
if (value >= size)
return volume_map[size - 1];
return volume_map[value];
}
static inline u32 ipc_to_mixer(u32 value, u32 *volume_map, int size)
{
int i;
for (i = 0; i < size; i++) {
if (volume_map[i] >= value)
return i;
}
return i - 1;
}
int snd_sof_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *sm =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_sof_control *scontrol = sm->dobj.private;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
unsigned int i, channels = scontrol->num_channels;
/* read back each channel */
for (i = 0; i < channels; i++)
ucontrol->value.integer.value[i] =
ipc_to_mixer(cdata->chanv[i].value,
scontrol->volume_table, sm->max + 1);
return 0;
}
int snd_sof_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *sm =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_sof_control *scontrol = sm->dobj.private;
struct snd_soc_component *scomp = scontrol->scomp;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
unsigned int i, channels = scontrol->num_channels;
bool change = false;
u32 value;
/* update each channel */
for (i = 0; i < channels; i++) {
value = mixer_to_ipc(ucontrol->value.integer.value[i],
scontrol->volume_table, sm->max + 1);
change = change || (value != cdata->chanv[i].value);
cdata->chanv[i].channel = i;
cdata->chanv[i].value = value;
}
/* notify DSP of mixer updates */
if (pm_runtime_active(scomp->dev))
snd_sof_ipc_set_get_comp_data(scontrol,
SOF_IPC_COMP_SET_VALUE,
SOF_CTRL_TYPE_VALUE_CHAN_GET,
SOF_CTRL_CMD_VOLUME,
true);
return change;
}
int snd_sof_switch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *sm =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_sof_control *scontrol = sm->dobj.private;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
unsigned int i, channels = scontrol->num_channels;
/* read back each channel */
for (i = 0; i < channels; i++)
ucontrol->value.integer.value[i] = cdata->chanv[i].value;
return 0;
}
int snd_sof_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *sm =
(struct soc_mixer_control *)kcontrol->private_value;
struct snd_sof_control *scontrol = sm->dobj.private;
struct snd_soc_component *scomp = scontrol->scomp;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
unsigned int i, channels = scontrol->num_channels;
bool change = false;
u32 value;
/* update each channel */
for (i = 0; i < channels; i++) {
value = ucontrol->value.integer.value[i];
change = change || (value != cdata->chanv[i].value);
cdata->chanv[i].channel = i;
cdata->chanv[i].value = value;
}
if (scontrol->led_ctl.use_led)
update_mute_led(scontrol, kcontrol, ucontrol);
/* notify DSP of mixer updates */
if (pm_runtime_active(scomp->dev))
snd_sof_ipc_set_get_comp_data(scontrol,
SOF_IPC_COMP_SET_VALUE,
SOF_CTRL_TYPE_VALUE_CHAN_GET,
SOF_CTRL_CMD_SWITCH,
true);
return change;
}
int snd_sof_enum_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_enum *se =
(struct soc_enum *)kcontrol->private_value;
struct snd_sof_control *scontrol = se->dobj.private;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
unsigned int i, channels = scontrol->num_channels;
/* read back each channel */
for (i = 0; i < channels; i++)
ucontrol->value.enumerated.item[i] = cdata->chanv[i].value;
return 0;
}
int snd_sof_enum_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_enum *se =
(struct soc_enum *)kcontrol->private_value;
struct snd_sof_control *scontrol = se->dobj.private;
struct snd_soc_component *scomp = scontrol->scomp;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
unsigned int i, channels = scontrol->num_channels;
bool change = false;
u32 value;
/* update each channel */
for (i = 0; i < channels; i++) {
value = ucontrol->value.enumerated.item[i];
change = change || (value != cdata->chanv[i].value);
cdata->chanv[i].channel = i;
cdata->chanv[i].value = value;
}
/* notify DSP of enum updates */
if (pm_runtime_active(scomp->dev))
snd_sof_ipc_set_get_comp_data(scontrol,
SOF_IPC_COMP_SET_VALUE,
SOF_CTRL_TYPE_VALUE_CHAN_GET,
SOF_CTRL_CMD_ENUM,
true);
return change;
}
int snd_sof_bytes_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_bytes_ext *be =
(struct soc_bytes_ext *)kcontrol->private_value;
struct snd_sof_control *scontrol = be->dobj.private;
struct snd_soc_component *scomp = scontrol->scomp;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
struct sof_abi_hdr *data = cdata->data;
size_t size;
int ret = 0;
if (be->max > sizeof(ucontrol->value.bytes.data)) {
dev_err_ratelimited(scomp->dev,
"error: data max %d exceeds ucontrol data array size\n",
be->max);
return -EINVAL;
}
size = data->size + sizeof(*data);
if (size > be->max) {
dev_err_ratelimited(scomp->dev,
"error: DSP sent %zu bytes max is %d\n",
size, be->max);
ret = -EINVAL;
goto out;
}
/* copy back to kcontrol */
memcpy(ucontrol->value.bytes.data, data, size);
out:
return ret;
}
int snd_sof_bytes_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct soc_bytes_ext *be =
(struct soc_bytes_ext *)kcontrol->private_value;
struct snd_sof_control *scontrol = be->dobj.private;
struct snd_soc_component *scomp = scontrol->scomp;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
struct sof_abi_hdr *data = cdata->data;
size_t size = data->size + sizeof(*data);
if (be->max > sizeof(ucontrol->value.bytes.data)) {
dev_err_ratelimited(scomp->dev,
"error: data max %d exceeds ucontrol data array size\n",
be->max);
return -EINVAL;
}
if (size > be->max) {
dev_err_ratelimited(scomp->dev,
"error: size too big %zu bytes max is %d\n",
size, be->max);
return -EINVAL;
}
/* copy from kcontrol */
memcpy(data, ucontrol->value.bytes.data, size);
/* notify DSP of byte control updates */
if (pm_runtime_active(scomp->dev))
snd_sof_ipc_set_get_comp_data(scontrol,
SOF_IPC_COMP_SET_DATA,
SOF_CTRL_TYPE_DATA_SET,
scontrol->cmd,
true);
return 0;
}
int snd_sof_bytes_ext_put(struct snd_kcontrol *kcontrol,
const unsigned int __user *binary_data,
unsigned int size)
{
struct soc_bytes_ext *be =
(struct soc_bytes_ext *)kcontrol->private_value;
struct snd_sof_control *scontrol = be->dobj.private;
struct snd_soc_component *scomp = scontrol->scomp;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
struct snd_ctl_tlv header;
const struct snd_ctl_tlv __user *tlvd =
(const struct snd_ctl_tlv __user *)binary_data;
/*
* The beginning of bytes data contains a header from where
* the length (as bytes) is needed to know the correct copy
* length of data from tlvd->tlv.
*/
if (copy_from_user(&header, tlvd, sizeof(const struct snd_ctl_tlv)))
return -EFAULT;
/* be->max is coming from topology */
if (header.length > be->max) {
dev_err_ratelimited(scomp->dev, "error: Bytes data size %d exceeds max %d.\n",
header.length, be->max);
return -EINVAL;
}
/* Check that header id matches the command */
if (header.numid != scontrol->cmd) {
dev_err_ratelimited(scomp->dev,
"error: incorrect numid %d\n",
header.numid);
return -EINVAL;
}
if (copy_from_user(cdata->data, tlvd->tlv, header.length))
return -EFAULT;
if (cdata->data->magic != SOF_ABI_MAGIC) {
dev_err_ratelimited(scomp->dev,
"error: Wrong ABI magic 0x%08x.\n",
cdata->data->magic);
return -EINVAL;
}
if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, cdata->data->abi)) {
dev_err_ratelimited(scomp->dev, "error: Incompatible ABI version 0x%08x.\n",
cdata->data->abi);
return -EINVAL;
}
if (cdata->data->size + sizeof(const struct sof_abi_hdr) > be->max) {
dev_err_ratelimited(scomp->dev, "error: Mismatch in ABI data size (truncated?).\n");
return -EINVAL;
}
/* notify DSP of byte control updates */
if (pm_runtime_active(scomp->dev))
snd_sof_ipc_set_get_comp_data(scontrol,
SOF_IPC_COMP_SET_DATA,
SOF_CTRL_TYPE_DATA_SET,
scontrol->cmd,
true);
return 0;
}
int snd_sof_bytes_ext_get(struct snd_kcontrol *kcontrol,
unsigned int __user *binary_data,
unsigned int size)
{
struct soc_bytes_ext *be =
(struct soc_bytes_ext *)kcontrol->private_value;
struct snd_sof_control *scontrol = be->dobj.private;
struct snd_soc_component *scomp = scontrol->scomp;
struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
struct snd_ctl_tlv header;
struct snd_ctl_tlv __user *tlvd =
(struct snd_ctl_tlv __user *)binary_data;
int data_size;
int ret = 0;
/*
* Decrement the limit by ext bytes header size to
* ensure the user space buffer is not exceeded.
*/
size -= sizeof(const struct snd_ctl_tlv);
/* set the ABI header values */
cdata->data->magic = SOF_ABI_MAGIC;
cdata->data->abi = SOF_ABI_VERSION;
/* Prevent read of other kernel data or possibly corrupt response */
data_size = cdata->data->size + sizeof(const struct sof_abi_hdr);
/* check data size doesn't exceed max coming from topology */
if (data_size > be->max) {
dev_err_ratelimited(scomp->dev, "error: user data size %d exceeds max size %d.\n",
data_size, be->max);
ret = -EINVAL;
goto out;
}
header.numid = scontrol->cmd;
header.length = data_size;
if (copy_to_user(tlvd, &header, sizeof(const struct snd_ctl_tlv))) {
ret = -EFAULT;
goto out;
}
if (copy_to_user(tlvd->tlv, cdata->data, data_size))
ret = -EFAULT;
out:
return ret;
}