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// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright(c) 2021-2022 Intel Corporation
//
// Authors: Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
// Cezary Rojewski <cezary.rojewski@intel.com>
//
#include <sound/soc.h>
#include "avs.h"
#include "control.h"
#include "messages.h"
#include "path.h"
static struct avs_dev *avs_get_kcontrol_adev(struct snd_kcontrol *kcontrol)
{
struct snd_soc_dapm_widget *w;
w = snd_soc_dapm_kcontrol_widget(kcontrol);
return to_avs_dev(w->dapm->component->dev);
}
static struct avs_path_module *avs_get_volume_module(struct avs_dev *adev, u32 id)
{
struct avs_path *path;
struct avs_path_pipeline *ppl;
struct avs_path_module *mod;
spin_lock(&adev->path_list_lock);
list_for_each_entry(path, &adev->path_list, node) {
list_for_each_entry(ppl, &path->ppl_list, node) {
list_for_each_entry(mod, &ppl->mod_list, node) {
if (guid_equal(&mod->template->cfg_ext->type, &AVS_PEAKVOL_MOD_UUID)
&& mod->template->ctl_id == id) {
spin_unlock(&adev->path_list_lock);
return mod;
}
}
}
}
spin_unlock(&adev->path_list_lock);
return NULL;
}
int avs_control_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value;
struct avs_control_data *ctl_data = (struct avs_control_data *)mc->dobj.private;
struct avs_dev *adev = avs_get_kcontrol_adev(kcontrol);
struct avs_volume_cfg *dspvols = NULL;
struct avs_path_module *active_module;
size_t num_dspvols;
int ret = 0;
/* prevent access to modules while path is being constructed */
mutex_lock(&adev->path_mutex);
active_module = avs_get_volume_module(adev, ctl_data->id);
if (active_module) {
ret = avs_ipc_peakvol_get_volume(adev, active_module->module_id,
active_module->instance_id, &dspvols,
&num_dspvols);
if (!ret)
ucontrol->value.integer.value[0] = dspvols[0].target_volume;
ret = AVS_IPC_RET(ret);
kfree(dspvols);
} else {
ucontrol->value.integer.value[0] = ctl_data->volume;
}
mutex_unlock(&adev->path_mutex);
return ret;
}
int avs_control_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value;
struct avs_control_data *ctl_data = (struct avs_control_data *)mc->dobj.private;
struct avs_dev *adev = avs_get_kcontrol_adev(kcontrol);
long *volume = &ctl_data->volume;
struct avs_path_module *active_module;
struct avs_volume_cfg dspvol = {0};
long ctlvol = ucontrol->value.integer.value[0];
int ret = 0, changed = 0;
if (ctlvol < 0 || ctlvol > mc->max)
return -EINVAL;
/* prevent access to modules while path is being constructed */
mutex_lock(&adev->path_mutex);
if (*volume != ctlvol) {
*volume = ctlvol;
changed = 1;
}
active_module = avs_get_volume_module(adev, ctl_data->id);
if (active_module) {
dspvol.channel_id = AVS_ALL_CHANNELS_MASK;
dspvol.target_volume = *volume;
ret = avs_ipc_peakvol_set_volume(adev, active_module->module_id,
active_module->instance_id, &dspvol);
ret = AVS_IPC_RET(ret);
}
mutex_unlock(&adev->path_mutex);
return ret ? ret : changed;
}
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