Re: A couple of hardware problems

[Takashi Iwai <tiwai@suse.de>]

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At Tue, 14 Jan 2003 14:34:40 +0000,
Steve Harris wrote:
> 
> The first one is not a problem with alsa, but I haven't been able to find
> any mention of it online, so I wonrdered if anyone has any insight into it.
> 
> I have a motherboard with a via82xx chipset [KT333] on it, the bios will
> only alow me to select "auto" or "disabled" for the sound device, and
> neither seems to make the device appear to lspci, Is it possible that the
> motherboard is disabling it becasue it's detected my other soundcards?

yes, usually "auto" means to activate the chip on mobo only when no
other soundcards exist.

> The other I dont know about: I bought an ESS Solo1 based card (Terratec
> 128i PCI) to use the MIDI port, but it doesn't appear to work for MIDI
> input. I've been messing with it for a couple of days and I'm ready to
> give up and swap it for an old ens1371 based card. If anyone has anything
> I should try before swtiching it please say.

the last time i tried, i also couldn't get the midi-in working, and
forgot this issue for a while.  i just took a look at the code again. 
could you test the attached patch?  it's to the latest cvs but likely
applicable to your version, too.


Takashi

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Index: alsa-kernel/pci/es1938.c
===================================================================
RCS file: /suse/tiwai/cvs/alsa/alsa-kernel/pci/es1938.c,v
retrieving revision 1.19
diff -u -r1.19 es1938.c
--- alsa-kernel/pci/es1938.c	7 Jan 2003 10:54:55 -0000	1.19
+++ alsa-kernel/pci/es1938.c	14 Jan 2003 16:21:04 -0000
@@ -1341,6 +1341,8 @@
 
 static int snd_es1938_free(es1938_t *chip)
 {
+	if (chip->rmidi)
+		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
 #if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
 	if (chip->gameport.io)
 		gameport_unregister_port(&chip->gameport);
@@ -1540,9 +1542,7 @@
 
 	/* MPU401 */
 	if (status & 0x80) {
-		/* ack */
-		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
-		printk("midi interrupt..\n");
+		// snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
 		if (chip->rmidi)
 			snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 	}
@@ -1650,7 +1650,9 @@
 	if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
 				chip->mpu_port, 1, chip->irq, 0, &chip->rmidi) < 0) {
 		printk(KERN_ERR "es1938: unable to initialize MPU-401\n");
-	}
+	} else
+		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
+
 #if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
 	chip->gameport.io = chip->game_port;
 	gameport_register_port(&chip->gameport);