1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved. 4 // 5 // Authors: Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com> 6 // Cezary Rojewski <cezary.rojewski@intel.com> 7 // 8 9 #include <sound/soc.h> 10 #include "avs.h" 11 #include "control.h" 12 #include "messages.h" 13 #include "path.h" 14 15 static struct avs_dev *avs_get_kcontrol_adev(struct snd_kcontrol *kcontrol) 16 { 17 struct snd_soc_dapm_widget *w; 18 19 w = snd_soc_dapm_kcontrol_widget(kcontrol); 20 21 return to_avs_dev(w->dapm->component->dev); 22 } 23 24 static struct avs_path_module *avs_get_kcontrol_module(struct avs_dev *adev, u32 id) 25 { 26 struct avs_path *path; 27 struct avs_path_pipeline *ppl; 28 struct avs_path_module *mod; 29 30 list_for_each_entry(path, &adev->path_list, node) 31 list_for_each_entry(ppl, &path->ppl_list, node) 32 list_for_each_entry(mod, &ppl->mod_list, node) 33 if (mod->template->ctl_id && mod->template->ctl_id == id) 34 return mod; 35 36 return NULL; 37 } 38 39 int avs_control_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 40 { 41 struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; 42 struct avs_control_data *ctl_data = (struct avs_control_data *)mc->dobj.private; 43 struct avs_dev *adev = avs_get_kcontrol_adev(kcontrol); 44 struct avs_volume_cfg *dspvols = NULL; 45 struct avs_path_module *active_module; 46 size_t num_dspvols; 47 int ret = 0; 48 49 /* prevent access to modules while path is being constructed */ 50 mutex_lock(&adev->path_mutex); 51 52 active_module = avs_get_kcontrol_module(adev, ctl_data->id); 53 if (active_module) { 54 ret = avs_ipc_peakvol_get_volume(adev, active_module->module_id, 55 active_module->instance_id, &dspvols, 56 &num_dspvols); 57 if (!ret) 58 ucontrol->value.integer.value[0] = dspvols[0].target_volume; 59 60 ret = AVS_IPC_RET(ret); 61 kfree(dspvols); 62 } else { 63 ucontrol->value.integer.value[0] = ctl_data->volume; 64 } 65 66 mutex_unlock(&adev->path_mutex); 67 return ret; 68 } 69 70 int avs_control_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 71 { 72 struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; 73 struct avs_control_data *ctl_data = (struct avs_control_data *)mc->dobj.private; 74 struct avs_dev *adev = avs_get_kcontrol_adev(kcontrol); 75 long *volume = &ctl_data->volume; 76 struct avs_path_module *active_module; 77 struct avs_volume_cfg dspvol = {0}; 78 long ctlvol = ucontrol->value.integer.value[0]; 79 int ret = 0, changed = 0; 80 81 if (ctlvol < 0 || ctlvol > mc->max) 82 return -EINVAL; 83 84 /* prevent access to modules while path is being constructed */ 85 mutex_lock(&adev->path_mutex); 86 87 if (*volume != ctlvol) { 88 *volume = ctlvol; 89 changed = 1; 90 } 91 92 active_module = avs_get_kcontrol_module(adev, ctl_data->id); 93 if (active_module) { 94 dspvol.channel_id = AVS_ALL_CHANNELS_MASK; 95 dspvol.target_volume = *volume; 96 97 ret = avs_ipc_peakvol_set_volume(adev, active_module->module_id, 98 active_module->instance_id, &dspvol); 99 ret = AVS_IPC_RET(ret); 100 } 101 102 mutex_unlock(&adev->path_mutex); 103 104 return ret ? ret : changed; 105 } 106