Unverified Commit 060a07cd authored Sep 19, 2023 by Peter Ujfalusi Committed by Mark Brown Sep 19, 2023

ASoC: SOF: ipc4-topology: Add definition for generic switch/enum control



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>
Link: https://lore.kernel.org/r/20230919103115.30783-2-peter.ujfalusi@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>

parent 88e20c1f

sound/soc/sof/ipc4-topology.h

+18 −1

Original line number	Diff line number	Diff line
		@@ -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