Currently IPC4 has no notion of a switch or enum type of control which is a generic concept in ALSA.

The generic support for these control types will be as follows: - large config is used to send the channel-value par array - param_id of a SWITCH type is 200 - param_id of an ENUM type is 201

Each module need to support a switch or/and enum must handle these universal param_ids. The message payload is described by struct sof_ipc4_control_msg_payload.

Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/ipc4-topology.h | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/ipc4-topology.h b/sound/soc/sof/ipc4-topology.h index d94f0ab4aee3..0a57b8ab3e08 100644 --- a/sound/soc/sof/ipc4-topology.h +++ b/sound/soc/sof/ipc4-topology.h @@ -319,7 +319,7 @@ struct sof_ipc4_copier { /** * struct sof_ipc4_ctrl_value_chan: generic channel mapped value data * @channel: Channel ID - * @value: gain value + * @value: Value associated with @channel */ struct sof_ipc4_ctrl_value_chan { u32 channel; @@ -343,6 +343,23 @@ struct sof_ipc4_control_data { }; };

+#define SOF_IPC4_SWITCH_CONTROL_PARAM_ID 200 +#define SOF_IPC4_ENUM_CONTROL_PARAM_ID 201 + +/** + * struct sof_ipc4_control_msg_payload - IPC payload for kcontrol parameters + * @id: unique id of the control + * @num_elems: Number of elements in the chanv array + * @reserved: reserved for future use, must be set to 0 + * @chanv: channel ID and value array + */ +struct sof_ipc4_control_msg_payload { + uint16_t id; + uint16_t num_elems; + uint32_t reserved[4]; + DECLARE_FLEX_ARRAY(struct sof_ipc4_ctrl_value_chan, chanv); +} __packed; + /** * struct sof_ipc4_gain_data - IPC gain blob * @channels: Channels

Enum controls use generic param_id and a generic struct where the data is passed to the firmware.

Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/ipc4-control.c | 64 +++++++++++++++++++++++++++++++++++ sound/soc/sof/ipc4-topology.c | 33 ++++++++++++++++++ 2 files changed, 97 insertions(+)

diff --git a/sound/soc/sof/ipc4-control.c b/sound/soc/sof/ipc4-control.c index cabdd891c644..938efaceb81c 100644 --- a/sound/soc/sof/ipc4-control.c +++ b/sound/soc/sof/ipc4-control.c @@ -297,6 +297,63 @@ static int sof_ipc4_switch_get(struct snd_sof_control *scontrol, return 0; }

+static bool sof_ipc4_enum_put(struct snd_sof_control *scontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; + struct snd_soc_component *scomp = scontrol->scomp; + struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); + struct snd_sof_widget *swidget; + bool widget_found = false; + bool change = false; + unsigned int i; + u32 value; + int ret; + + /* update each channel */ + for (i = 0; i < scontrol->num_channels; i++) { + value = ucontrol->value.enumerated.item[i]; + change = change || (value != cdata->chanv[i].value); + cdata->chanv[i].channel = i; + cdata->chanv[i].value = value; + } + + if (!pm_runtime_active(scomp->dev)) + return change; + + /* find widget associated with the control */ + list_for_each_entry(swidget, &sdev->widget_list, list) { + if (swidget->comp_id == scontrol->comp_id) { + widget_found = true; + break; + } + } + + if (!widget_found) { + dev_err(scomp->dev, "Failed to find widget for kcontrol %s\n", scontrol->name); + return false; + } + + ret = sof_ipc4_set_generic_control_data(sdev, swidget, scontrol, true); + if (ret < 0) + return false; + + return change; +} + +static int sof_ipc4_enum_get(struct snd_sof_control *scontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; + unsigned int i; + + /* read back each channel */ + for (i = 0; i < scontrol->num_channels; i++) + ucontrol->value.enumerated.item[i] = cdata->chanv[i].value; + + return 0; +} + static int sof_ipc4_set_get_bytes_data(struct snd_sof_dev *sdev, struct snd_sof_control *scontrol, bool set, bool lock) @@ -562,6 +619,11 @@ static int sof_ipc4_widget_kcontrol_setup(struct snd_sof_dev *sdev, struct snd_s ret = sof_ipc4_set_get_bytes_data(sdev, scontrol, true, false); break; + case SND_SOC_TPLG_CTL_ENUM: + case SND_SOC_TPLG_CTL_ENUM_VALUE: + ret = sof_ipc4_set_generic_control_data(sdev, swidget, + scontrol, false); + break; default: break; } @@ -605,6 +667,8 @@ const struct sof_ipc_tplg_control_ops tplg_ipc4_control_ops = { .volume_get = sof_ipc4_volume_get, .switch_put = sof_ipc4_switch_put, .switch_get = sof_ipc4_switch_get, + .enum_put = sof_ipc4_enum_put, + .enum_get = sof_ipc4_enum_get, .bytes_put = sof_ipc4_bytes_put, .bytes_get = sof_ipc4_bytes_get, .bytes_ext_put = sof_ipc4_bytes_ext_put, diff --git a/sound/soc/sof/ipc4-topology.c b/sound/soc/sof/ipc4-topology.c index ef18379e0f19..bf91c8786162 100644 --- a/sound/soc/sof/ipc4-topology.c +++ b/sound/soc/sof/ipc4-topology.c @@ -2128,6 +2128,36 @@ static int sof_ipc4_control_load_volume(struct snd_sof_dev *sdev, struct snd_sof return 0; }

+static int sof_ipc4_control_load_enum(struct snd_sof_dev *sdev, struct snd_sof_control *scontrol) +{ + struct sof_ipc4_control_data *control_data; + struct sof_ipc4_msg *msg; + int i; + + scontrol->size = struct_size(control_data, chanv, scontrol->num_channels); + + /* scontrol->ipc_control_data will be freed in sof_control_unload */ + scontrol->ipc_control_data = kzalloc(scontrol->size, GFP_KERNEL); + if (!scontrol->ipc_control_data) + return -ENOMEM; + + control_data = scontrol->ipc_control_data; + control_data->index = scontrol->index; + + msg = &control_data->msg; + msg->primary = SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_LARGE_CONFIG_SET); + msg->primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST); + msg->primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG); + + msg->extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_ENUM_CONTROL_PARAM_ID); + + /* Default, initial value for enums: first enum entry is selected (0) */ + for (i = 0; i < scontrol->num_channels; i++) + control_data->chanv[i].channel = i; + + return 0; +} + static int sof_ipc4_control_load_bytes(struct snd_sof_dev *sdev, struct snd_sof_control *scontrol) { struct sof_ipc4_control_data *control_data; @@ -2202,6 +2232,9 @@ static int sof_ipc4_control_setup(struct snd_sof_dev *sdev, struct snd_sof_contr return sof_ipc4_control_load_volume(sdev, scontrol); case SND_SOC_TPLG_CTL_BYTES: return sof_ipc4_control_load_bytes(sdev, scontrol); + case SND_SOC_TPLG_CTL_ENUM: + case SND_SOC_TPLG_CTL_ENUM_VALUE: + return sof_ipc4_control_load_enum(sdev, scontrol); default: break; }