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

From: Icenowy Zheng
Date: Sat Oct 12 2024 - 21:48:00 EST


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@xxxxxxxxxx>
---
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