Commit 41cc2338 authored by Takashi Sakamoto's avatar Takashi Sakamoto Committed by Takashi Iwai
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ALSA: firewire-motu: parse messages for line input parameters in register DSP model 



This commit parses message and cache current parameters of line input
function, available for MOTU 828 mk2 and Traveler.

Signed-off-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20211015080826.34847-8-o-takashi@sakamocchi.jp


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 6ca81d2b

include/uapi/sound/firewire.h

+9 −0
Original line number Diff line number Diff line
@@ -164,6 +164,10 @@ struct snd_firewire_motu_register_dsp_meter { 
 * @output.hp_paired_volume: The volume of paired hp output.

 * @output.hp_paired_assignment: The source assigned to paired hp output.

 * @output.reserved: Padding for 32 bit alignment for future extension.

 * @line_input.boost_flag: The flags of boost for line inputs, only for 828mk2 and Traveler.

 * @line_input.nominal_level_flag: The flags of nominal level for line inputs, only for 828mk2 and

 *				   Traveler.

 * @line_input.reserved: Padding for 32 bit alignment for future extension.

 *

 * The structure expresses the set of parameters for DSP controlled by register access.

 */
@@ -187,6 +191,11 @@ struct snd_firewire_motu_register_dsp_parameter { 
		__u8 hp_paired_assignment;

		__u8 reserved[5];

	} output;

	struct {

		__u8 boost_flag;

		__u8 nominal_level_flag;

		__u8 reserved[6];

	} line_input;

};



// In below MOTU models, software is allowed to control their DSP by command in frame of

sound/firewire/motu/motu-register-dsp-message-parser.c

+6 −0
Original line number Diff line number Diff line
@@ -219,6 +219,12 @@ void snd_motu_register_dsp_message_parser_parse(struct snd_motu *motu, const str 
			case HP_OUTPUT_PAIRED_ASSIGNMENT:

				parser->param.output.hp_paired_assignment = val;

				break;

			case LINE_INPUT_BOOST:

				parser->param.line_input.boost_flag = val;

				break;

			case LINE_INPUT_NOMINAL_LEVEL:

				parser->param.line_input.nominal_level_flag = val;

				break;

			case METER:

			{

				u8 pos;