linux-kernel - [PATCH 1/2] ALSA: emu10k1: add a capability bit for no MIDI

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Message-ID: <20241013014714.7686-2-uwu@icenowy.me>
Date: Sun, 13 Oct 2024 09:47:12 +0800
From: Icenowy Zheng <uwu@...nowy.me>
To: Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>
Cc: Oswald Buddenhagen <oswald.buddenhagen@....de>,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Icenowy Zheng <uwu@...nowy.me>
Subject: [PATCH 1/2] ALSA: emu10k1: add a capability bit for no MIDI

Audigy Rx is a card born in the era that USB MIDI has been the
mainstream form of PC MIDI interface, and no external MIDI I/O is made
available on Audigy Rx.

Add a capability bit for emu10k1 driver to be able to hide the MPU-401
ports.

Signed-off-by: Icenowy Zheng <uwu@...nowy.me>
---
 include/sound/emu10k1.h     | 1 +
 sound/pci/emu10k1/emu10k1.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h
index 38db50b280eba..9172674838627 100644
--- a/include/sound/emu10k1.h
+++ b/include/sound/emu10k1.h
@@ -1673,6 +1673,7 @@ struct snd_emu_chip_details {
 	unsigned int i2c_adc:1;		/* I2C interface for ADC; requires ca0108_chip */
 	unsigned int adc_1361t:1;	/* Use Philips 1361T ADC */
 	unsigned int invert_shared_spdif:1;  /* analog/digital switch inverted */
+	unsigned int no_midi:1;		/* Has no MIDI */
 	const char *driver;
 	const char *name;
 	const char *id;		/* for backward compatibility - can be NULL if not needed */
diff --git a/sound/pci/emu10k1/emu10k1.c b/sound/pci/emu10k1/emu10k1.c
index dadeda7758cee..d323ebbc0368f 100644
--- a/sound/pci/emu10k1/emu10k1.c
+++ b/sound/pci/emu10k1/emu10k1.c
@@ -133,7 +133,9 @@ static int snd_card_emu10k1_probe(struct pci_dev *pci,
 		if (err < 0)
 			return err;
 	}
-	if (emu->audigy) {
+	if (emu->card_capabilities->no_midi) {
+		dev_info(emu->card->dev, "Card has no ext. MIDI ports.\n");
+	} else if (emu->audigy) {
 		err = snd_emu10k1_audigy_midi(emu);
 		if (err < 0)
 			return err;
-- 
2.47.0