// SPDX-License-Identifier: (GPL-2.0-only 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) 2021 Intel Corporation // //
if (!widget_found) {
dev_err(sdev->dev, "%s: can't find widget with id %d\n", __func__,
scontrol->comp_id); return -EINVAL;
}
if (lock)
mutex_lock(&swidget->setup_mutex); else
lockdep_assert_held(&swidget->setup_mutex);
/* * Volatile controls should always be part of static pipelines and the * widget use_count would always be > 0 in this case. For the others, * just return the cached value if the widget is not set up.
*/ if (!swidget->use_count) goto unlock;
/* * Select the IPC cmd and the ctrl_type based on the ctrl_cmd and the * direction * Note: SOF_CTRL_TYPE_VALUE_COMP_* is not used and supported currently * for ctrl_type
*/ if (cdata->cmd == SOF_CTRL_CMD_BINARY) {
ipc_cmd = set ? SOF_IPC_COMP_SET_DATA : SOF_IPC_COMP_GET_DATA;
ctrl_type = set ? SOF_CTRL_TYPE_DATA_SET : SOF_CTRL_TYPE_DATA_GET;
} else {
ipc_cmd = set ? SOF_IPC_COMP_SET_VALUE : SOF_IPC_COMP_GET_VALUE;
ctrl_type = set ? SOF_CTRL_TYPE_VALUE_CHAN_SET : SOF_CTRL_TYPE_VALUE_CHAN_GET;
}
/* calculate header and data size */ switch (cdata->type) { case SOF_CTRL_TYPE_VALUE_CHAN_GET: case SOF_CTRL_TYPE_VALUE_CHAN_SET:
cdata->num_elems = scontrol->num_channels;
msg_bytes = scontrol->num_channels * sizeof(struct sof_ipc_ctrl_value_chan);
msg_bytes += sizeof(struct sof_ipc_ctrl_data); break; case SOF_CTRL_TYPE_DATA_GET: case SOF_CTRL_TYPE_DATA_SET:
cdata->num_elems = cdata->data->size;
ret = iops->set_get_data(sdev, cdata, cdata->rhdr.hdr.size, set); if (!set) goto unlock;
/* It is a set-data operation, and we have a backup that we can restore */ if (ret < 0) { if (!scontrol->old_ipc_control_data) goto unlock; /* * Current ipc_control_data is not valid, we use the last known good * configuration
*/
memcpy(scontrol->ipc_control_data, scontrol->old_ipc_control_data,
scontrol->max_size);
kfree(scontrol->old_ipc_control_data);
scontrol->old_ipc_control_data = NULL; /* Send the last known good configuration to firmware */
ret = iops->set_get_data(sdev, cdata, cdata->rhdr.hdr.size, set); if (ret < 0) goto unlock;
}
unlock: if (lock)
mutex_unlock(&swidget->setup_mutex);
/* set the ABI header values */
cdata->data->magic = SOF_ABI_MAGIC;
cdata->data->abi = SOF_ABI_VERSION;
/* refresh the component data from DSP */
scontrol->comp_data_dirty = false;
ret = sof_ipc3_set_get_kcontrol_data(scontrol, false, true); if (ret < 0) {
dev_err(scomp->dev, "Failed to get control data: %d\n", ret);
/* Set the flag to re-try next time to get the data */
scontrol->comp_data_dirty = true;
}
}
/* 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,
scontrol->max + 1);
/* update each channel */ for (i = 0; i < channels; i++) {
u32 value = mixer_to_ipc(ucontrol->value.integer.value[i],
scontrol->volume_table, scontrol->max + 1);
if (scontrol->max_size > sizeof(ucontrol->value.bytes.data)) {
dev_err_ratelimited(scomp->dev, "data max %zu exceeds ucontrol data array size\n",
scontrol->max_size); return -EINVAL;
}
/* be->max has been verified to be >= sizeof(struct sof_abi_hdr) */ if (data->size > scontrol->max_size - sizeof(*data)) {
dev_err_ratelimited(scomp->dev, "%u bytes of control data is invalid, max is %zu\n",
data->size, scontrol->max_size - sizeof(*data)); return -EINVAL;
}
size = data->size + sizeof(*data);
/* copy back to kcontrol */
memcpy(ucontrol->value.bytes.data, data, size);
if (scontrol->max_size > sizeof(ucontrol->value.bytes.data)) {
dev_err_ratelimited(scomp->dev, "data max %zu exceeds ucontrol data array size\n",
scontrol->max_size); return -EINVAL;
}
/* scontrol->max_size has been verified to be >= sizeof(struct sof_abi_hdr) */ if (data->size > scontrol->max_size - sizeof(*data)) {
dev_err_ratelimited(scomp->dev, "data size too big %u bytes max is %zu\n",
data->size, scontrol->max_size - sizeof(*data)); return -EINVAL;
}
size = data->size + sizeof(*data);
/* copy from kcontrol */
memcpy(data, ucontrol->value.bytes.data, size);
/* notify DSP of byte control updates */ if (pm_runtime_active(scomp->dev)) return sof_ipc3_set_get_kcontrol_data(scontrol, true, true);
/* * 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(struct snd_ctl_tlv))) return -EFAULT;
/* make sure TLV info is consistent */ if (header.length + sizeof(struct snd_ctl_tlv) > size) {
dev_err_ratelimited(scomp->dev, "Inconsistent TLV, data %d + header %zu > %d\n",
header.length, sizeof(struct snd_ctl_tlv), size); return -EINVAL;
}
/* be->max is coming from topology */ if (header.length > scontrol->max_size) {
dev_err_ratelimited(scomp->dev, "Bytes data size %d exceeds max %zu\n",
header.length, scontrol->max_size); return -EINVAL;
}
/* Check that header id matches the command */ if (header.numid != cdata->cmd) {
dev_err_ratelimited(scomp->dev, "Incorrect command for bytes put %d\n",
header.numid); return -EINVAL;
}
if (!scontrol->old_ipc_control_data) { /* Create a backup of the current, valid bytes control */
scontrol->old_ipc_control_data = kmemdup(scontrol->ipc_control_data,
scontrol->max_size, GFP_KERNEL); if (!scontrol->old_ipc_control_data) return -ENOMEM;
}
if (copy_from_user(cdata->data, tlvd->tlv, header.length)) {
ret = -EFAULT; goto err_restore;
}
if (cdata->data->magic != SOF_ABI_MAGIC) {
dev_err_ratelimited(scomp->dev, "Wrong ABI magic 0x%08x\n", cdata->data->magic); goto err_restore;
}
if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, cdata->data->abi)) {
dev_err_ratelimited(scomp->dev, "Incompatible ABI version 0x%08x\n",
cdata->data->abi); goto err_restore;
}
/* be->max has been verified to be >= sizeof(struct sof_abi_hdr) */ if (cdata->data->size > scontrol->max_size - sizeof(struct sof_abi_hdr)) {
dev_err_ratelimited(scomp->dev, "Mismatch in ABI data size (truncated?)\n"); goto err_restore;
}
/* notify DSP of byte control updates */ if (pm_runtime_active(scomp->dev)) { /* Actually send the data to the DSP; this is an opportunity to validate the data */ return sof_ipc3_set_get_kcontrol_data(scontrol, true, true);
}
return 0;
err_restore: /* If we have an issue, we restore the old, valid bytes control data */ if (scontrol->old_ipc_control_data) {
memcpy(cdata->data, scontrol->old_ipc_control_data, scontrol->max_size);
kfree(scontrol->old_ipc_control_data);
scontrol->old_ipc_control_data = NULL;
} return ret;
}
/* * Decrement the limit by ext bytes header size to * ensure the user space buffer is not exceeded.
*/ if (size < sizeof(struct snd_ctl_tlv)) return -ENOSPC;
size -= sizeof(struct snd_ctl_tlv);
/* set the ABI header values */
cdata->data->magic = SOF_ABI_MAGIC;
cdata->data->abi = SOF_ABI_VERSION;
/* get all the component data from DSP */ if (from_dsp) { int ret = sof_ipc3_set_get_kcontrol_data(scontrol, false, true);
if (ret < 0) return ret;
}
/* check data size doesn't exceed max coming from topology */ if (cdata->data->size > scontrol->max_size - sizeof(struct sof_abi_hdr)) {
dev_err_ratelimited(scomp->dev, "User data size %d exceeds max size %zu\n",
cdata->data->size,
scontrol->max_size - sizeof(struct sof_abi_hdr)); return -EINVAL;
}
if (cdata->type == SOF_CTRL_TYPE_VALUE_COMP_GET ||
cdata->type == SOF_CTRL_TYPE_VALUE_COMP_SET) {
dev_err(sdev->dev, "Component data is not supported in control notification\n"); return;
}
/* Find the swidget first */
list_for_each_entry(swidget, &sdev->widget_list, list) { if (swidget->comp_id == cdata->comp_id) {
found = true; break;
}
}
if (!found) return;
/* Translate SOF cmd to TPLG type */ switch (cdata->cmd) { case SOF_CTRL_CMD_VOLUME: case SOF_CTRL_CMD_SWITCH:
type = SND_SOC_TPLG_TYPE_MIXER; break; case SOF_CTRL_CMD_BINARY:
type = SND_SOC_TPLG_TYPE_BYTES; break; case SOF_CTRL_CMD_ENUM:
type = SND_SOC_TPLG_TYPE_ENUM; break; default:
dev_err(sdev->dev, "Unknown cmd %u in %s\n", cdata->cmd, __func__); return;
}
widget = swidget->widget; for (i = 0; i < widget->num_kcontrols; i++) { /* skip non matching types or non matching indexes within type */ if (widget->dobj.widget.kcontrol_type[i] == type &&
widget->kcontrol_news[i].index == cdata->index) {
kc = widget->kcontrols[i]; break;
}
}
if (!kc) return;
switch (cdata->cmd) { case SOF_CTRL_CMD_VOLUME: case SOF_CTRL_CMD_SWITCH:
sm = (struct soc_mixer_control *)kc->private_value;
scontrol = sm->dobj.private; break; case SOF_CTRL_CMD_BINARY:
be = (struct soc_bytes_ext *)kc->private_value;
scontrol = be->dobj.private; break; case SOF_CTRL_CMD_ENUM:
se = (struct soc_enum *)kc->private_value;
scontrol = se->dobj.private; break; default: return;
}
expected_size = sizeof(struct sof_ipc_ctrl_data); switch (cdata->type) { case SOF_CTRL_TYPE_VALUE_CHAN_GET: case SOF_CTRL_TYPE_VALUE_CHAN_SET:
expected_size += cdata->num_elems * sizeof(struct sof_ipc_ctrl_value_chan); break; case SOF_CTRL_TYPE_DATA_GET: case SOF_CTRL_TYPE_DATA_SET:
expected_size += cdata->num_elems + sizeof(struct sof_abi_hdr); break; default: return;
}
if (cdata->num_elems) /* * The message includes the updated value/data, update the * control's local cache using the received notification
*/
snd_sof_update_control(scontrol, cdata); else /* Mark the scontrol that the value/data is changed in SOF */
scontrol->comp_data_dirty = true;
/* set up all controls for the widget */
list_for_each_entry(scontrol, &sdev->kcontrol_list, list) if (scontrol->comp_id == swidget->comp_id) { /* set kcontrol data in DSP */
ret = sof_ipc3_set_get_kcontrol_data(scontrol, true, false); if (ret < 0) {
dev_err(sdev->dev, "kcontrol %d set up failed for widget %s\n",
scontrol->comp_id, swidget->widget->name); return ret;
}
/* * Read back the data from the DSP for static widgets. * This is particularly useful for binary kcontrols * associated with static pipeline widgets to initialize * the data size to match that in the DSP.
*/ if (swidget->dynamic_pipeline_widget) continue;
ret = sof_ipc3_set_get_kcontrol_data(scontrol, false, false); if (ret < 0)
dev_warn(sdev->dev, "kcontrol %d read failed for widget %s\n",
scontrol->comp_id, swidget->widget->name);
}
return 0;
}
staticint
sof_ipc3_set_up_volume_table(struct snd_sof_control *scontrol, int tlv[SOF_TLV_ITEMS], int size)
{ int i;
/* init the volume table */
scontrol->volume_table = kcalloc(size, sizeof(u32), GFP_KERNEL); if (!scontrol->volume_table) return -ENOMEM;
/* populate the volume table */ for (i = 0; i < size ; i++)
scontrol->volume_table[i] = vol_compute_gain(i, tlv);
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