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@linux.intel.com --- 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@linux.intel.com + */ + +/* 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; +}