On Fri, Jan 10, 2003 at 09:03:11AM +0100, Björn Fischer wrote:
>...
> 00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233 AC97 Audio
>Controller (rev 50)
>...
Das Modul heisst via82cxxx_audio, du brauchst aber entweder Kernel
2.4.21-pre3 oder 2.4.20 mit dem untenstehenden Patch.
Gruss
Adrian
--- linux-2.4.20/drivers/sound/via82cxxx_audio.c 2002-08-03 00:39:44.000000000
+0000
+++ linux-2.4.21-pre3/drivers/sound/via82cxxx_audio.c 2003-01-06 21:18:24.000000000
++0000
@@ -2,17 +2,20 @@
* Support for VIA 82Cxxx Audio Codecs
* Copyright 1999,2000 Jeff Garzik
*
+ * Updated to support the VIA 8233/8235 audio subsystem
+ * Alan Cox <[EMAIL PROTECTED]> (C) Copyright 2002 Red Hat Inc
+ *
* Distributed under the GNU GENERAL PUBLIC LICENSE (GPL) Version 2.
* See the "COPYING" file distributed with this software for more info.
+ * NO WARRANTY
*
* For a list of known bugs (errata) and documentation,
* see via-audio.pdf in linux/Documentation/DocBook.
* If this documentation does not exist, run "make pdfdocs".
- *
*/
-#define VIA_VERSION "1.9.1"
+#define VIA_VERSION "1.9.1-ac2"
#include <linux/config.h>
@@ -117,7 +120,10 @@
#define VIA_PCM_STATUS 0x00
#define VIA_PCM_CONTROL 0x01
#define VIA_PCM_TYPE 0x02
+#define VIA_PCM_LEFTVOL 0x02
+#define VIA_PCM_RIGHTVOL 0x03
#define VIA_PCM_TABLE_ADDR 0x04
+#define VIA_PCM_STOPRATE 0x08 /* 8233+ */
#define VIA_PCM_BLOCK_COUNT 0x0C
/* XXX unused DMA channel for FM PCM data */
@@ -126,6 +132,12 @@
#define VIA_BASE0_FM_OUT_CHAN_CTRL 0x21
#define VIA_BASE0_FM_OUT_CHAN_TYPE 0x22
+/* Six channel audio output on 8233 */
+#define VIA_BASE0_MULTI_OUT_CHAN 0x40
+#define VIA_BASE0_MULTI_OUT_CHAN_STATUS 0x40
+#define VIA_BASE0_MULTI_OUT_CHAN_CTRL 0x41
+#define VIA_BASE0_MULTI_OUT_CHAN_TYPE 0x42
+
#define VIA_BASE0_AC97_CTRL 0x80
#define VIA_BASE0_SGD_STATUS_SHADOW 0x84
#define VIA_BASE0_GPI_INT_ENABLE 0x8C
@@ -251,11 +263,15 @@
unsigned is_record : 1;
unsigned is_mapped : 1;
unsigned is_enabled : 1;
+ unsigned is_multi: 1; /* 8233 6 channel */
u8 pcm_fmt; /* VIA_PCM_FMT_xxx */
+ u8 channels; /* Channel count */
unsigned rate; /* sample rate */
unsigned int frag_size;
unsigned int frag_number;
+
+ unsigned char intmask;
volatile struct via_sgd_table *sgtable;
dma_addr_t sgt_handle;
@@ -281,6 +297,9 @@
int dev_dsp; /* /dev/dsp index from register_sound_dsp() */
unsigned rev_h : 1;
+ unsigned legacy: 1; /* Has legacy ports */
+ unsigned intmask: 1; /* Needs int bits */
+ unsigned sixchannel: 1; /* 8233/35 with 6 channel support */
int locked_rate : 1;
@@ -353,7 +372,9 @@
static struct pci_device_id via_pci_tbl[] __initdata = {
{ PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5,
- PCI_ANY_ID, PCI_ANY_ID, },
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
{ 0, }
};
MODULE_DEVICE_TABLE(pci,via_pci_tbl);
@@ -427,7 +448,13 @@
static inline void sg_begin (struct via_channel *chan)
{
- outb (VIA_SGD_START, chan->iobase + VIA_PCM_CONTROL);
+ DPRINTK("Start with intmask %d\n", chan->intmask);
+ DPRINTK("About to start from %d to %d\n",
+ inl(chan->iobase + VIA_PCM_BLOCK_COUNT),
+ inb(chan->iobase + VIA_PCM_STOPRATE + 3));
+ outb (VIA_SGD_START|chan->intmask, chan->iobase + VIA_PCM_CONTROL);
+ DPRINTK("Status is now %02X\n", inb(chan->iobase + VIA_PCM_STATUS));
+ DPRINTK("Control is now %02X\n", inb(chan->iobase + VIA_PCM_CONTROL));
}
@@ -443,6 +470,10 @@
return 0;
}
+static int via_sg_offset(struct via_channel *chan)
+{
+ return inl (chan->iobase + VIA_PCM_BLOCK_COUNT) & 0x00FFFFFF;
+}
/****************************************************************
*
@@ -506,6 +537,8 @@
via_chan_stop (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
via_chan_stop (card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
via_chan_stop (card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+ if(card->sixchannel)
+ via_chan_stop (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN);
/*
* clear any existing stops / flags (sanity check mainly)
@@ -513,6 +546,8 @@
via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
via_chan_status_clear (card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+ if(card->sixchannel)
+ via_chan_status_clear (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN);
/*
* clear any enabled interrupt bits
@@ -532,6 +567,14 @@
if (tmp != new_tmp)
outb (0, card->baseaddr + VIA_BASE0_FM_OUT_CHAN_TYPE);
+ if(card->sixchannel)
+ {
+ tmp = inb (card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN_TYPE);
+ new_tmp = tmp &
+~(VIA_IRQ_ON_FLAG|VIA_IRQ_ON_EOL|VIA_RESTART_SGD_ON_EOL);
+ if (tmp != new_tmp)
+ outb (0, card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN_TYPE);
+ }
+
udelay(10);
/*
@@ -627,9 +670,19 @@
{
memset (chan, 0, sizeof (*chan));
+ if(card->intmask)
+ chan->intmask = 0x23; /* Turn on the IRQ bits */
+
if (chan == &card->ch_out) {
chan->name = "PCM-OUT";
- chan->iobase = card->baseaddr + VIA_BASE0_PCM_OUT_CHAN;
+ if(card->sixchannel)
+ {
+ chan->iobase = card->baseaddr + VIA_BASE0_MULTI_OUT_CHAN;
+ chan->is_multi = 1;
+ DPRINTK("Using multichannel for pcm out\n");
+ }
+ else
+ chan->iobase = card->baseaddr + VIA_BASE0_PCM_OUT_CHAN;
} else if (chan == &card->ch_in) {
chan->name = "PCM-IN";
chan->iobase = card->baseaddr + VIA_BASE0_PCM_IN_CHAN;
@@ -708,6 +761,11 @@
DPRINTK ("ENTER\n");
+
+ chan->intmask = 0;
+ if(card->intmask)
+ chan->intmask = 0x23; /* Turn on the IRQ bits */
+
if (chan->sgtable != NULL) {
DPRINTK ("EXIT\n");
return 0;
@@ -778,6 +836,16 @@
outl (chan->sgt_handle, chan->iobase + VIA_PCM_TABLE_ADDR);
udelay (20);
via_ac97_wait_idle (card);
+ /* load no rate adaption, stereo 16bit, set up ring slots */
+ if(card->sixchannel)
+ {
+ if(!chan->is_multi)
+ {
+ outl (0xFFFFF | (0x3 << 20) | (chan->frag_number << 24),
+chan->iobase + VIA_PCM_STOPRATE);
+ udelay (20);
+ via_ac97_wait_idle (card);
+ }
+ }
DPRINTK ("inl (0x%lX) = %x\n",
chan->iobase + VIA_PCM_TABLE_ADDR,
@@ -881,8 +949,11 @@
assert (chan != NULL);
if (reset)
+ {
/* reset to 8-bit mono mode */
chan->pcm_fmt = 0;
+ chan->channels = 1;
+ }
/* enable interrupts on FLAG and EOL */
chan->pcm_fmt |= VIA_CHAN_TYPE_MASK;
@@ -893,8 +964,83 @@
/* set interrupt select bits where applicable (PCM in & out channels) */
if (!chan->is_record)
chan->pcm_fmt |= VIA_CHAN_TYPE_INT_SELECT;
+
+ DPRINTK("SET FMT - %02x %02x\n", chan->intmask , chan->is_multi);
+
+ if(chan->intmask)
+ {
+ u32 m;
+
+ /*
+ * Channel 0x4 is up to 6 x 16bit and has to be
+ * programmed differently
+ */
+
+ if(chan->is_multi)
+ {
+ u8 c = 0;
+
+ /*
+ * Load the type bit for num channels
+ * and 8/16bit
+ */
+
+ if(chan->pcm_fmt & VIA_PCM_FMT_16BIT)
+ c = 1 << 7;
+ if(chan->pcm_fmt & VIA_PCM_FMT_STEREO)
+ c |= (2<<4);
+ else
+ c |= (1<<4);
+
+ outb(c, chan->iobase + VIA_PCM_TYPE);
+
+ /*
+ * Set the channel steering
+ * Mono
+ * Channel 0 to slot 3
+ * Channel 0 to slot 4
+ * Stereo
+ * Channel 0 to slot 3
+ * Channel 1 to slot 4
+ */
+
+ switch(chan->channels)
+ {
+ case 1:
+ outl(0xFF000000 | (1<<0) | (1<<4) ,
+chan->iobase + VIA_PCM_STOPRATE);
+ break;
+ case 2:
+ outl(0xFF000000 | (1<<0) | (2<<4) ,
+chan->iobase + VIA_PCM_STOPRATE);
+ break;
+ case 4:
+ outl(0xFF000000 | (1<<0) | (2<<4) | (3<<8) |
+(4<<12), chan->iobase + VIA_PCM_STOPRATE);
+ break;
+ case 6:
+ outl(0xFF000000 | (1<<0) | (2<<4) | (5<<8) |
+(6<<12) | (3<<16) | (4<<20), chan->iobase + VIA_PCM_STOPRATE);
+ break;
+ }
+ }
+ else
+ {
+ /*
+ * New style, turn off channel volume
+ * control, set bits in the right register
+ */
+ outb(0x0, chan->iobase + VIA_PCM_LEFTVOL);
+ outb(0x0, chan->iobase + VIA_PCM_RIGHTVOL);
+
+ m = inl(chan->iobase + VIA_PCM_STOPRATE);
+ m &= ~(3<<20);
+ if(chan->pcm_fmt & VIA_PCM_FMT_STEREO)
+ m |= (1 << 20);
+ if(chan->pcm_fmt & VIA_PCM_FMT_16BIT)
+ m |= (1 << 21);
+ outl(m, chan->iobase + VIA_PCM_STOPRATE);
+ }
+ }
+ else
+ outb (chan->pcm_fmt, chan->iobase + VIA_PCM_TYPE);
- outb (chan->pcm_fmt, chan->iobase + VIA_PCM_TYPE);
DPRINTK ("EXIT, pcm_fmt = 0x%02X, reg = 0x%02X\n",
chan->pcm_fmt,
@@ -1035,15 +1181,25 @@
/* mono */
case 1:
chan->pcm_fmt &= ~VIA_PCM_FMT_STEREO;
+ chan->channels = 1;
via_chan_pcm_fmt (chan, 0);
break;
/* stereo */
case 2:
chan->pcm_fmt |= VIA_PCM_FMT_STEREO;
+ chan->channels = 2;
via_chan_pcm_fmt (chan, 0);
break;
+ case 4:
+ case 6:
+ if(chan->is_multi)
+ {
+ chan->pcm_fmt |= VIA_PCM_FMT_STEREO;
+ chan->channels = val;
+ break;
+ }
/* unknown */
default:
printk (KERN_WARNING PFX "unknown number of channels\n");
@@ -1077,9 +1233,8 @@
DPRINTK ("\n");
- chan->frag_size = (VIA_DEFAULT_FRAG_TIME * chan->rate *
- ((chan->pcm_fmt & VIA_PCM_FMT_STEREO) ? 2 : 1) *
- ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) ? 2 : 1)) /
1000 - 1;
+ chan->frag_size = (VIA_DEFAULT_FRAG_TIME * chan->rate * chan->channels
+ * ((chan->pcm_fmt & VIA_PCM_FMT_16BIT) ? 2 : 1)) /
+1000 - 1;
shift = 0;
while (chan->frag_size) {
@@ -1494,16 +1649,19 @@
udelay (100);
}
+ if(card->legacy)
+ {
#if 0 /* this breaks on K7M */
- /* disable legacy stuff */
- pci_write_config_byte (pdev, 0x42, 0x00);
- udelay(10);
+ /* disable legacy stuff */
+ pci_write_config_byte (pdev, 0x42, 0x00);
+ udelay(10);
#endif
- /* route FM trap to IRQ, disable FM trap */
- pci_write_config_byte (pdev, 0x48, 0x05);
- udelay(10);
-
+ /* route FM trap to IRQ, disable FM trap */
+ pci_write_config_byte (pdev, 0x48, 0x05);
+ udelay(10);
+ }
+
/* disable all codec GPI interrupts */
outl (0, pci_resource_start (pdev, 0) + 0x8C);
@@ -1553,7 +1711,9 @@
printk (KERN_ERR PFX "unable to reset AC97 codec, aborting\n");
goto err_out;
}
-
+
+ mdelay(10);
+
if (ac97_probe_codec (&card->ac97) == 0) {
printk (KERN_ERR PFX "unable to probe AC97 codec, aborting\n");
rc = -EIO;
@@ -1730,6 +1890,22 @@
spin_unlock (&card->lock);
}
+static void via_new_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct via_info *card = dev_id;
+
+ /*
+ * goes away completely on UP
+ */
+ spin_lock (&card->lock);
+
+ via_intr_channel (&card->ch_out);
+ via_intr_channel (&card->ch_in);
+ via_intr_channel (&card->ch_fm);
+
+ spin_unlock (&card->lock);
+}
+
/**
* via_interrupt_init - Initialize interrupt handling
@@ -1757,18 +1933,32 @@
return -EIO;
}
- /* make sure FM irq is not routed to us */
- pci_read_config_byte (card->pdev, VIA_FM_NMI_CTRL, &tmp8);
- if ((tmp8 & VIA_CR48_FM_TRAP_TO_NMI) == 0) {
- tmp8 |= VIA_CR48_FM_TRAP_TO_NMI;
- pci_write_config_byte (card->pdev, VIA_FM_NMI_CTRL, tmp8);
+ /* VIA requires this is done */
+ pci_write_config_byte(card->pdev, PCI_INTERRUPT_LINE, card->pdev->irq);
+
+ if(card->legacy)
+ {
+ /* make sure FM irq is not routed to us */
+ pci_read_config_byte (card->pdev, VIA_FM_NMI_CTRL, &tmp8);
+ if ((tmp8 & VIA_CR48_FM_TRAP_TO_NMI) == 0) {
+ tmp8 |= VIA_CR48_FM_TRAP_TO_NMI;
+ pci_write_config_byte (card->pdev, VIA_FM_NMI_CTRL, tmp8);
+ }
+ if (request_irq (card->pdev->irq, via_interrupt, SA_SHIRQ,
+VIA_MODULE_NAME, card)) {
+ printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n",
+ card->pdev->irq);
+ DPRINTK ("EXIT, returning -EBUSY\n");
+ return -EBUSY;
+ }
}
-
- if (request_irq (card->pdev->irq, via_interrupt, SA_SHIRQ, VIA_MODULE_NAME,
card)) {
- printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n",
- card->pdev->irq);
- DPRINTK ("EXIT, returning -EBUSY\n");
- return -EBUSY;
+ else
+ {
+ if (request_irq (card->pdev->irq, via_new_interrupt, SA_SHIRQ,
+VIA_MODULE_NAME, card)) {
+ printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n",
+ card->pdev->irq);
+ DPRINTK ("EXIT, returning -EBUSY\n");
+ return -EBUSY;
+ }
}
DPRINTK ("EXIT, returning 0\n");
@@ -1803,11 +1993,14 @@
assert (card != NULL);
- /* turn off legacy features, if not already */
- pci_read_config_byte (card->pdev, VIA_FUNC_ENABLE, &tmp8);
- if (tmp8 & (VIA_CR42_SB_ENABLE | VIA_CR42_FM_ENABLE)) {
- tmp8 &= ~(VIA_CR42_SB_ENABLE | VIA_CR42_FM_ENABLE);
- pci_write_config_byte (card->pdev, VIA_FUNC_ENABLE, tmp8);
+ if(card->legacy)
+ {
+ /* turn off legacy features, if not already */
+ pci_read_config_byte (card->pdev, VIA_FUNC_ENABLE, &tmp8);
+ if (tmp8 & (VIA_CR42_SB_ENABLE | VIA_CR42_FM_ENABLE)) {
+ tmp8 &= ~(VIA_CR42_SB_ENABLE | VIA_CR42_FM_ENABLE);
+ pci_write_config_byte (card->pdev, VIA_FUNC_ENABLE, tmp8);
+ }
}
via_stop_everything (card);
@@ -2120,7 +2313,6 @@
file, buffer, count, ppos ? ((unsigned long)*ppos) : 0);
assert (file != NULL);
- assert (buffer != NULL);
card = file->private_data;
assert (card != NULL);
@@ -2278,11 +2470,12 @@
DPRINTK ("Flushed block %u, sw_ptr now %u, n_frags now %d\n",
n, chan->sw_ptr, atomic_read (&chan->n_frags));
- DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+ DPRINTK ("regs==S=%02X C=%02X TP=%02X BP=%08X RT=%08X SG=%08X CC=%08X
+SS=%08X\n",
inb (card->baseaddr + 0x00),
inb (card->baseaddr + 0x01),
inb (card->baseaddr + 0x02),
inl (card->baseaddr + 0x04),
+ inl (card->baseaddr + 0x08),
inl (card->baseaddr + 0x0C),
inl (card->baseaddr + 0x80),
inl (card->baseaddr + 0x84));
@@ -2305,7 +2498,6 @@
file, buffer, count, ppos ? ((unsigned long)*ppos) : 0);
assert (file != NULL);
- assert (buffer != NULL);
card = file->private_data;
assert (card != NULL);
@@ -2558,7 +2750,7 @@
if (chan->is_active) {
unsigned long extra;
info.ptr = atomic_read (&chan->hw_ptr) * chan->frag_size;
- extra = chan->frag_size - inl (chan->iobase + VIA_PCM_BLOCK_COUNT);
+ extra = chan->frag_size - via_sg_offset(chan);
info.ptr += extra;
info.bytes += extra;
} else {
@@ -2679,7 +2871,7 @@
rc = put_user (val, (int *)arg);
break;
- /* query or set number of channels (1=mono, 2=stereo) */
+ /* query or set number of channels (1=mono, 2=stereo, 4/6 for multichannel) */
case SNDCTL_DSP_CHANNELS:
if (get_user(val, (int *)arg)) {
rc = -EFAULT;
@@ -2700,11 +2892,10 @@
val = rc;
} else {
- if ((rd && (card->ch_in.pcm_fmt & VIA_PCM_FMT_STEREO)) ||
- (wr && (card->ch_out.pcm_fmt & VIA_PCM_FMT_STEREO)))
- val = 2;
+ if (rd)
+ val = card->ch_in.channels;
else
- val = 1;
+ val = card->ch_out.channels;
}
DPRINTK ("CHANNELS EXIT, returning %d\n", val);
rc = put_user (val, (int *)arg);
@@ -2864,10 +3055,11 @@
val = chan->frag_number - atomic_read (&chan->n_frags);
+ assert(val >= 0);
+
if (val > 0) {
val *= chan->frag_size;
- val -= chan->frag_size -
- inl (chan->iobase + VIA_PCM_BLOCK_COUNT);
+ val -= chan->frag_size - via_sg_offset(chan);
}
val += chan->slop_len % chan->frag_size;
} else
@@ -3029,7 +3221,9 @@
/* why is this forced to 16-bit stereo in all drivers? */
chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO;
+ chan->channels = 2;
+ // TO DO - use FIFO: via_capture_fifo(card, 1);
via_chan_pcm_fmt (chan, 0);
via_set_rate (&card->ac97, chan, 44100);
}
@@ -3044,6 +3238,7 @@
/* if in duplex mode make the recording and playback channels
have the same settings */
chan->pcm_fmt = VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO;
+ chan->channels = 2;
via_chan_pcm_fmt (chan, 0);
via_set_rate (&card->ac97, chan, 44100);
} else {
@@ -3083,7 +3278,7 @@
if (file->f_mode & FMODE_WRITE) {
rc = via_dsp_drain_playback (card, &card->ch_out, nonblock);
- if (rc)
+ if (rc && rc != ERESTARTSYS) /* Nobody needs to know about ^C */
printk (KERN_DEBUG "via_audio: ignoring drain playback error
%d\n", rc);
via_chan_free (card, &card->ch_out);
@@ -3122,11 +3317,12 @@
DPRINTK ("ENTER\n");
if (printed_version++ == 0)
- printk (KERN_INFO "Via 686a audio driver " VIA_VERSION "\n");
+ printk (KERN_INFO "Via 686a/8233/8235 audio driver " VIA_VERSION "\n");
rc = pci_enable_device (pdev);
if (rc)
goto err_out;
+
rc = pci_request_regions (pdev, "via82cxxx_audio");
if (rc)
@@ -3158,7 +3354,15 @@
* which means it has a few extra features */
if (pci_resource_start (pdev, 2) > 0)
card->rev_h = 1;
-
+
+ /* Overkill for now, but more flexible done right */
+
+ card->intmask = id->driver_data;
+ card->legacy = !card->intmask;
+ card->sixchannel = id->driver_data;
+
+ if(card->sixchannel)
+ printk(KERN_INFO PFX "Six channel audio available\n");
if (pdev->irq < 1) {
printk (KERN_ERR PFX "invalid PCI IRQ %d, aborting\n", pdev->irq);
rc = -ENODEV;
@@ -3171,6 +3375,8 @@
goto err_out_kfree;
}
+ pci_set_master(pdev);
+
/*
* init AC97 mixer and codec
*/
@@ -3214,26 +3420,29 @@
/* Disable by default */
card->midi_info.io_base = 0;
- pci_read_config_byte (pdev, 0x42, &r42);
- /* Disable MIDI interrupt */
- pci_write_config_byte (pdev, 0x42, r42 | VIA_CR42_MIDI_IRQMASK);
- if (r42 & VIA_CR42_MIDI_ENABLE)
+ if(card->legacy)
{
- if (r42 & VIA_CR42_MIDI_PNP) /* Address selected by iobase 2 - not
tested */
- card->midi_info.io_base = pci_resource_start (pdev, 2);
- else /* Address selected by byte 0x43 */
+ pci_read_config_byte (pdev, 0x42, &r42);
+ /* Disable MIDI interrupt */
+ pci_write_config_byte (pdev, 0x42, r42 | VIA_CR42_MIDI_IRQMASK);
+ if (r42 & VIA_CR42_MIDI_ENABLE)
{
- u8 r43;
- pci_read_config_byte (pdev, 0x43, &r43);
- card->midi_info.io_base = 0x300 + ((r43 & 0x0c) << 2);
- }
+ if (r42 & VIA_CR42_MIDI_PNP) /* Address selected by iobase 2 -
+not tested */
+ card->midi_info.io_base = pci_resource_start (pdev, 2);
+ else /* Address selected by byte 0x43 */
+ {
+ u8 r43;
+ pci_read_config_byte (pdev, 0x43, &r43);
+ card->midi_info.io_base = 0x300 + ((r43 & 0x0c) << 2);
+ }
- card->midi_info.irq = -pdev->irq;
- if (probe_uart401(& card->midi_info, THIS_MODULE))
- {
- card->midi_devc=midi_devs[card->midi_info.slots[4]]->devc;
- pci_write_config_byte(pdev, 0x42, r42 &
~VIA_CR42_MIDI_IRQMASK);
- printk("Enabled Via MIDI\n");
+ card->midi_info.irq = -pdev->irq;
+ if (probe_uart401(& card->midi_info, THIS_MODULE))
+ {
+
+card->midi_devc=midi_devs[card->midi_info.slots[4]]->devc;
+ pci_write_config_byte(pdev, 0x42, r42 &
+~VIA_CR42_MIDI_IRQMASK);
+ printk("Enabled Via MIDI\n");
+ }
}
}
#endif
--
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