SOF exposes regular ALSA Kcontrols that are defined by topology. This
patch converts the Kcontrol IO to DSP IPC.
Signed-off-by: Liam Girdwood <liam.r.girdwood@xxxxxxxxxxxxxxx>
---
sound/soc/sof/control.c | 218 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 218 insertions(+)
create mode 100644 sound/soc/sof/control.c
diff --git a/sound/soc/sof/control.c b/sound/soc/sof/control.c
new file mode 100644
index 000000000000..0e0f928c10c3
--- /dev/null
+++ b/sound/soc/sof/control.c
@@ -0,0 +1,218 @@
+// 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) 2017 Intel Corporation. All rights reserved.
+ *
+ * Author: Liam Girdwood <liam.r.girdwood@xxxxxxxxxxxxxxx>
+ */
+
+/* Mixer Controls */
+
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <sound/soc-topology.h>
+#include <sound/soc.h>
+#include <sound/control.h>
+#include <uapi/sound/sof-ipc.h>
+#include "sof-priv.h"
+
+static inline u32 mixer_to_ipc(unsigned int value, u32 *volume_map, int size)
+{
+ if (value >= size)
+ return volume_map[size - 1];
+ else
+ 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 snd_sof_dev *sdev = scontrol->sdev;
+ struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
+ unsigned int i, channels = scontrol->num_channels;
+
+ pm_runtime_get_sync(sdev->dev);
+
+ /* get all the mixer data from DSP */
+ snd_sof_ipc_get_comp_data(sdev->ipc, scontrol, SOF_IPC_COMP_GET_VALUE,
+ SOF_CTRL_TYPE_VALUE_CHAN_GET,
+ SOF_CTRL_CMD_VOLUME);
+
+ /* 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);
+
+ pm_runtime_mark_last_busy(sdev->dev);
+ pm_runtime_put_autosuspend(sdev->dev);
+ 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_sof_dev *sdev = scontrol->sdev;
+ struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
+ unsigned int i, channels = scontrol->num_channels;
+
+ pm_runtime_get_sync(sdev->dev);
+
+ /* update each channel */
+ for (i = 0; i < channels; i++) {
+ cdata->chanv[i].value =
+ mixer_to_ipc(ucontrol->value.integer.value[i],
+ scontrol->volume_table, sm->max + 1);
+ cdata->chanv[i].channel = i;
+ }
+
+ /* notify DSP of mixer updates */
+ snd_sof_ipc_set_comp_data(sdev->ipc, scontrol, SOF_IPC_COMP_SET_VALUE,
+ SOF_CTRL_TYPE_VALUE_CHAN_GET,
+ SOF_CTRL_CMD_VOLUME);
+
+ pm_runtime_mark_last_busy(sdev->dev);
+ pm_runtime_put_autosuspend(sdev->dev);
+ return 0;
+}
+
+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 snd_sof_dev *sdev = scontrol->sdev;
+ struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
+ unsigned int i, channels = scontrol->num_channels;
+
+ pm_runtime_get_sync(sdev->dev);
+
+ /* get all the mixer data from DSP */
+ snd_sof_ipc_get_comp_data(sdev->ipc, scontrol, SOF_IPC_COMP_GET_VALUE,
+ SOF_CTRL_TYPE_VALUE_CHAN_GET,
+ SOF_CTRL_CMD_ENUM);
+
+ /* read back each channel */
+ for (i = 0; i < channels; i++)
+ ucontrol->value.integer.value[i] = cdata->chanv[i].value;
+
+ pm_runtime_mark_last_busy(sdev->dev);
+ pm_runtime_put_autosuspend(sdev->dev);
+ 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_sof_dev *sdev = scontrol->sdev;
+ struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
+ unsigned int i, channels = scontrol->num_channels;
+
+ pm_runtime_get_sync(sdev->dev);
+
+ /* update each channel */
+ for (i = 0; i < channels; i++)
+ cdata->chanv[i].value = ucontrol->value.integer.value[i];
+
+ /* notify DSP of mixer updates */
+ snd_sof_ipc_set_comp_data(sdev->ipc, scontrol, SOF_IPC_COMP_SET_VALUE,
+ SOF_CTRL_TYPE_VALUE_CHAN_SET,
+ SOF_CTRL_CMD_ENUM);
+
+ pm_runtime_mark_last_busy(sdev->dev);
+ pm_runtime_put_autosuspend(sdev->dev);
+ return 0;
+}
+
+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_sof_dev *sdev = scontrol->sdev;
+ struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
+ struct sof_abi_hdr *data = cdata->data;
+ size_t size;
+ int ret = 0;
+
+ pm_runtime_get_sync(sdev->dev);
+
+ /* get all the mixer data from DSP */
+ snd_sof_ipc_get_comp_data(sdev->ipc, scontrol, SOF_IPC_COMP_GET_DATA,
+ SOF_CTRL_TYPE_DATA_GET, scontrol->cmd);
+ size = data->size + sizeof(*data);
+ if (size > be->max) {
+ dev_err(sdev->dev, "error: DSP sent %ld bytes max is %d\n",
+ size, be->max);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* copy back to kcontrol */
+ memcpy(ucontrol->value.bytes.data, data, size);
+
+out:
+ pm_runtime_mark_last_busy(sdev->dev);
+ pm_runtime_put_autosuspend(sdev->dev);
+ 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_sof_dev *sdev = scontrol->sdev;
+ struct sof_ipc_ctrl_data *cdata = scontrol->control_data;
+ struct sof_abi_hdr *data = cdata->data;
+ int ret = 0;
+
+ pm_runtime_get_sync(sdev->dev);
+
+ if (data->size > be->max) {
+ dev_err(sdev->dev, "error: size too big %d bytes max is %d\n",
+ data->size, be->max);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* copy from kcontrol */
+ memcpy(data, ucontrol->value.bytes.data, data->size);
+
+ /* notify DSP of mixer updates */
+ snd_sof_ipc_set_comp_data(sdev->ipc, scontrol, SOF_IPC_COMP_SET_DATA,
+ SOF_CTRL_TYPE_DATA_SET, scontrol->cmd);
+
+out:
+ pm_runtime_mark_last_busy(sdev->dev);
+ pm_runtime_put_autosuspend(sdev->dev);
+ return ret;
+}
--
2.17.1
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
