ALSA: firewire-motu: parse messages for line input parameters in regi…

…ster DSP model

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

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20211015080826.34847-8-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/uapi/sound/firewire.h

@@ -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

@@ -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;