Merge with 2.3.19.

1 files changed, 2241 insertions, 0 deletions

diff --git a/drivers/sound/esssolo1.c b/drivers/sound/esssolo1.c
new file mode 100644
index 000000000..90ccaf342
--- /dev/null
+++ b/drivers/sound/esssolo1.c
@@ -0,0 +1,2241 @@
+/*****************************************************************************/
+
+/*
+ *      esssolo1.c  --  ESS Technology Solo1 (ES1946) audio driver.
+ *
+ *      Copyright (C) 1998-1999  Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Module command line parameters:
+ *   none so far
+ *
+ *  Supported devices:
+ *  /dev/dsp    standard /dev/dsp device, (mostly) OSS compatible
+ *  /dev/mixer  standard /dev/mixer device, (mostly) OSS compatible
+ *  /dev/midi   simple MIDI UART interface, no ioctl
+ *
+ *  Revision history
+ *    10.11.98   0.1   Initial release (without any hardware)
+ *    22.03.99   0.2   cinfo.blocks should be reset after GETxPTR ioctl.
+ *                     reported by Johan Maes <joma@telindus.be>
+ *                     return EAGAIN instead of EBUSY when O_NONBLOCK
+ *                     read/write cannot be executed
+ *    07.04.99   0.3   implemented the following ioctl's: SOUND_PCM_READ_RATE, 
+ *                     SOUND_PCM_READ_CHANNELS, SOUND_PCM_READ_BITS; 
+ *                     Alpha fixes reported by Peter Jones <pjones@redhat.com>
+ *    15.06.99   0.4   Fix bad allocation bug.
+ *                     Thanks to Deti Fliegl <fliegl@in.tum.de>
+ *    28.06.99   0.5   Add pci_set_master
+ *    12.08.99   0.6   Fix MIDI UART crashing the driver
+ *                     Changed mixer semantics from OSS documented
+ *                     behaviour to OSS "code behaviour".
+ *                     Recording might actually work now.
+ *                     The real DDMA controller address register is at PCI config
+ *                     0x60, while the register at 0x18 is used as a placeholder
+ *                     register for BIOS address allocation. This register
+ *                     is supposed to be copied into 0x60, according
+ *                     to the Solo1 datasheet. When I do that, I can access
+ *                     the DDMA registers except the mask bit, which
+ *                     is stuck at 1. When I copy the contents of 0x18 +0x10
+ *                     to the DDMA base register, everything seems to work.
+ *                     The fun part is that the Windows Solo1 driver doesn't
+ *                     seem to do these tricks.
+ *                     Bugs remaining: plops and clicks when starting/stopping playback
+ *    31.08.99   0.7   add spin_lock_init
+ *                     replaced current->state = x with set_current_state(x)
+ *    03.09.99   0.8   change read semantics for MIDI to match
+ *                     OSS more closely; remove possible wakeup race
+ *
+ */
+
+/*****************************************************************************/
+      
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/sound.h>
+#include <linux/malloc.h>
+#include <linux/soundcard.h>
+#include <linux/pci.h>
+#include <linux/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <asm/uaccess.h>
+#include <asm/hardirq.h>
+
+#include "dm.h"
+
+/* --------------------------------------------------------------------- */
+
+#undef OSS_DOCUMENTED_MIXER_SEMANTICS
+
+/* --------------------------------------------------------------------- */
+
+#ifndef PCI_VENDOR_ID_ESS
+#define PCI_VENDOR_ID_ESS         0x125d
+#endif
+#ifndef PCI_DEVICE_ID_ESS_SOLO1
+#define PCI_DEVICE_ID_ESS_SOLO1   0x1969
+#endif
+
+#define SOLO1_MAGIC  ((PCI_VENDOR_ID_ESS<<16)|PCI_DEVICE_ID_ESS_SOLO1)
+
+#define DDMABASE_OFFSET           0x10    /* chip bug workaround kludge */
+#define DDMABASE_EXTENT           16
+
+#define IOBASE_EXTENT             16
+#define SBBASE_EXTENT             16
+#define VCBASE_EXTENT             (DDMABASE_EXTENT+DDMABASE_OFFSET)
+#define MPUBASE_EXTENT            4
+#define GPBASE_EXTENT             4
+
+
+/* MIDI buffer sizes */
+
+#define MIDIINBUF  256
+#define MIDIOUTBUF 256
+
+#define FMODE_MIDI_SHIFT 3
+#define FMODE_MIDI_READ  (FMODE_READ << FMODE_MIDI_SHIFT)
+#define FMODE_MIDI_WRITE (FMODE_WRITE << FMODE_MIDI_SHIFT)
+
+#define FMODE_DMFM 0x10
+
+/* --------------------------------------------------------------------- */
+
+struct solo1_state {
+	/* magic */
+	unsigned int magic;
+
+	/* we keep the cards in a linked list */
+	struct solo1_state *next;
+	
+	/* pcidev is needed to turn off the DDMA controller at driver shutdown */
+	struct pci_dev *pcidev;
+
+	/* soundcore stuff */
+	int dev_audio;
+	int dev_mixer;
+	int dev_midi;
+	int dev_dmfm;
+
+	/* hardware resources */
+	unsigned long iobase, sbbase, vcbase, ddmabase, mpubase, gpbase; /* long for SPARC */
+	unsigned int irq;
+
+	/* mixer registers */
+	struct {
+		unsigned short vol[10];
+		unsigned int recsrc;
+		unsigned int modcnt;
+		unsigned short micpreamp;
+	} mix;
+
+	/* wave stuff */
+	unsigned fmt;
+	unsigned channels;
+	unsigned rate;
+	unsigned char clkdiv;
+	unsigned ena;
+
+	spinlock_t lock;
+	struct semaphore open_sem;
+	mode_t open_mode;
+	wait_queue_head_t open_wait;
+
+	struct dmabuf {
+		void *rawbuf;
+		unsigned buforder;
+		unsigned numfrag;
+		unsigned fragshift;
+		unsigned hwptr, swptr;
+		unsigned total_bytes;
+		int count;
+		unsigned error; /* over/underrun */
+		wait_queue_head_t wait;
+		/* redundant, but makes calculations easier */
+		unsigned fragsize;
+		unsigned dmasize;
+		unsigned fragsamples;
+		/* OSS stuff */
+		unsigned mapped:1;
+		unsigned ready:1;
+		unsigned endcleared:1;
+		unsigned ossfragshift;
+		int ossmaxfrags;
+		unsigned subdivision;
+	} dma_dac, dma_adc;
+
+	/* midi stuff */
+	struct {
+		unsigned ird, iwr, icnt;
+		unsigned ord, owr, ocnt;
+		wait_queue_head_t iwait;
+		wait_queue_head_t owait;
+		struct timer_list timer;
+		unsigned char ibuf[MIDIINBUF];
+		unsigned char obuf[MIDIOUTBUF];
+	} midi;
+};
+
+/* --------------------------------------------------------------------- */
+
+struct solo1_state *devs = NULL;
+
+/* --------------------------------------------------------------------- */
+
+extern inline void write_seq(struct solo1_state *s, unsigned char data)
+{
+        int i;
+	unsigned long flags;
+        
+	/* the __cli stunt is to send the data within the command window */
+        for (i = 0; i < 0xffff; i++) {
+		__save_flags(flags);
+		__cli();
+                if (!(inb(s->sbbase+0xc) & 0x80)) {
+                        outb(data, s->sbbase+0xc);
+			__restore_flags(flags);
+                        return;
+                }
+		__restore_flags(flags);
+	}
+}
+
+extern inline int read_seq(struct solo1_state *s, unsigned char *data)
+{
+        int i;
+
+        if (!data)
+                return 0;
+        for (i = 0; i < 0xffff; i++)
+                if (inb(s->sbbase+0xe) & 0x80) {
+                        *data = inb(s->sbbase+0xa);
+                        return 1;
+                }
+        return 0;
+}
+
+static int inline reset_ctrl(struct solo1_state *s)
+{
+        int i;
+
+        outb(3, s->sbbase+6); /* clear sequencer and FIFO */
+        udelay(10);
+        outb(0, s->sbbase+6);
+        for (i = 0; i < 0xffff; i++)
+                if (inb(s->sbbase+0xe) & 0x80)
+                        if (inb(s->sbbase+0xa) == 0xaa) {
+				write_seq(s, 0xc6); /* enter enhanced mode */
+                                return 1;
+			}
+        return 0;
+}
+
+static void write_ctrl(struct solo1_state *s, unsigned char reg, unsigned char data)
+{
+	write_seq(s, reg);
+	write_seq(s, data);
+}
+
+static unsigned char read_ctrl(struct solo1_state *s, unsigned char reg)
+{
+        unsigned char r;
+
+	write_seq(s, 0xc0);
+	write_seq(s, reg);
+	read_seq(s, &r);
+	return r;
+}
+
+static void write_mixer(struct solo1_state *s, unsigned char reg, unsigned char data)
+{
+	outb(reg, s->sbbase+4);
+	outb(data, s->sbbase+5);
+}
+
+static unsigned char read_mixer(struct solo1_state *s, unsigned char reg)
+{
+	outb(reg, s->sbbase+4);
+	return inb(s->sbbase+5);
+}
+
+/* --------------------------------------------------------------------- */
+
+extern inline unsigned ld2(unsigned int x)
+{
+	unsigned r = 0;
+	
+	if (x >= 0x10000) {
+		x >>= 16;
+		r += 16;
+	}
+	if (x >= 0x100) {
+		x >>= 8;
+		r += 8;
+	}
+	if (x >= 0x10) {
+		x >>= 4;
+		r += 4;
+	}
+	if (x >= 4) {
+		x >>= 2;
+		r += 2;
+	}
+	if (x >= 2)
+		r++;
+	return r;
+}
+
+/* --------------------------------------------------------------------- */
+
+extern inline void stop_dac(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	s->ena &= ~FMODE_WRITE;
+	write_mixer(s, 0x78, 0x10);
+	spin_unlock_irqrestore(&s->lock, flags);
+}
+
+static void start_dac(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->ena & FMODE_WRITE) && (s->dma_dac.mapped || s->dma_dac.count > 0) && s->dma_dac.ready) {
+		s->ena |= FMODE_WRITE;
+		write_mixer(s, 0x78, 0x12);
+		udelay(10);
+		write_mixer(s, 0x78, 0x13);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+}	
+
+extern inline void stop_adc(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	s->ena &= ~FMODE_READ;
+	write_ctrl(s, 0xb8, 0xe);
+	spin_unlock_irqrestore(&s->lock, flags);
+}
+
+static void start_adc(struct solo1_state *s)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->ena & FMODE_READ) && (s->dma_adc.mapped || s->dma_adc.count < (signed)(s->dma_adc.dmasize - 2*s->dma_adc.fragsize))
+	    && s->dma_adc.ready) {
+		s->ena |= FMODE_READ;
+		write_ctrl(s, 0xb8, 0xf);
+#if 0
+		printk(KERN_DEBUG "solo1: DMAbuffer: 0x%08lx\n", (long)s->dma_adc.rawbuf);
+		printk(KERN_DEBUG "solo1: DMA: mask: 0x%02x cnt: 0x%04x addr: 0x%08x  stat: 0x%02x\n", 
+		       inb(s->ddmabase+0xf), inw(s->ddmabase+4), inl(s->ddmabase), inb(s->ddmabase+8));
+#endif
+                outb(0, s->ddmabase+0xd); /* master reset */
+		outb(1, s->ddmabase+0xf);  /* mask */
+		outb(0x54/*0x14*/, s->ddmabase+0xb);  /* DMA_MODE_READ | DMA_MODE_AUTOINIT */
+		outl(virt_to_bus(s->dma_adc.rawbuf), s->ddmabase);
+		outw(s->dma_adc.dmasize-1, s->ddmabase+4);
+		outb(0, s->ddmabase+0xf);
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+#if 0
+	printk(KERN_DEBUG "solo1: start DMA: reg B8: 0x%02x  SBstat: 0x%02x\n"
+	       KERN_DEBUG "solo1: DMA: stat: 0x%02x  cnt: 0x%04x  mask: 0x%02x\n", 
+	       read_ctrl(s, 0xb8), inb(s->sbbase+0xc), 
+	       inb(s->ddmabase+8), inw(s->ddmabase+4), inb(s->ddmabase+0xf));
+	printk(KERN_DEBUG "solo1: A1: 0x%02x  A2: 0x%02x  A4: 0x%02x  A5: 0x%02x  A8: 0x%02x\n"  
+	       KERN_DEBUG "solo1: B1: 0x%02x  B2: 0x%02x  B4: 0x%02x  B7: 0x%02x  B8: 0x%02x  B9: 0x%02x\n",
+	       read_ctrl(s, 0xa1), read_ctrl(s, 0xa2), read_ctrl(s, 0xa4), read_ctrl(s, 0xa5), read_ctrl(s, 0xa8), 
+	       read_ctrl(s, 0xb1), read_ctrl(s, 0xb2), read_ctrl(s, 0xb4), read_ctrl(s, 0xb7), read_ctrl(s, 0xb8), 
+	       read_ctrl(s, 0xb9));
+#endif
+}
+
+/* --------------------------------------------------------------------- */
+
+#define DMABUF_DEFAULTORDER (15-PAGE_SHIFT)
+#define DMABUF_MINORDER 1
+
+extern inline void dealloc_dmabuf(struct dmabuf *db)
+{
+	unsigned long map, mapend;
+
+	if (db->rawbuf) {
+		/* undo marking the pages as reserved */
+		mapend = MAP_NR(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);
+		for (map = MAP_NR(db->rawbuf); map <= mapend; map++)
+			clear_bit(PG_reserved, &mem_map[map].flags);	
+		free_pages((unsigned long)db->rawbuf, db->buforder);
+	}
+	db->rawbuf = NULL;
+	db->mapped = db->ready = 0;
+}
+
+static int prog_dmabuf(struct solo1_state *s, struct dmabuf *db, int gfp_mask)
+{
+	int order;
+	unsigned bytespersec;
+	unsigned bufs, sample_shift = 0;
+	unsigned long map, mapend;
+
+	db->hwptr = db->swptr = db->total_bytes = db->count = db->error = db->endcleared = 0;
+	if (!db->rawbuf) {
+		db->ready = db->mapped = 0;
+                for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--)
+                        if ((db->rawbuf = (void *)__get_free_pages(gfp_mask, order)))
+				break;
+		if (!db->rawbuf)
+			return -ENOMEM;
+		db->buforder = order;
+		/* now mark the pages as reserved; otherwise remap_page_range doesn't do what we want */
+		mapend = MAP_NR(db->rawbuf + (PAGE_SIZE << db->buforder) - 1);
+		for (map = MAP_NR(db->rawbuf); map <= mapend; map++)
+			set_bit(PG_reserved, &mem_map[map].flags);
+	}
+	if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+		sample_shift++;
+	if (s->channels > 1)
+		sample_shift++;
+	bytespersec = s->rate << sample_shift;
+	bufs = PAGE_SIZE << db->buforder;
+	if (db->ossfragshift) {
+		if ((1000 << db->ossfragshift) < bytespersec)
+			db->fragshift = ld2(bytespersec/1000);
+		else
+			db->fragshift = db->ossfragshift;
+	} else {
+		db->fragshift = ld2(bytespersec/100/(db->subdivision ? db->subdivision : 1));
+		if (db->fragshift < 3)
+			db->fragshift = 3;
+	}
+	db->numfrag = bufs >> db->fragshift;
+	while (db->numfrag < 4 && db->fragshift > 3) {
+		db->fragshift--;
+		db->numfrag = bufs >> db->fragshift;
+	}
+	db->fragsize = 1 << db->fragshift;
+	if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
+		db->numfrag = db->ossmaxfrags;
+	db->fragsamples = db->fragsize >> sample_shift;
+	db->dmasize = db->numfrag << db->fragshift;
+	return 0;
+}
+
+extern inline int prog_dmabuf_adc(struct solo1_state *s)
+{
+	unsigned long va;
+	int c;
+
+	stop_adc(s);
+	if ((c = prog_dmabuf(s, &s->dma_adc, GFP_KERNEL | GFP_DMA)))
+		return c;
+	va = virt_to_bus(s->dma_adc.rawbuf);
+	if ((va & ~((1<<24)-1)))
+		panic("solo1: buffer above 16M boundary");
+	outb(0, s->ddmabase+0xd);  /* clear */
+	outb(1, s->ddmabase+0xf); /* mask */
+	/*outb(0, s->ddmabase+8);*/  /* enable (enable is active low!) */
+	outb(0x54, s->ddmabase+0xb);  /* DMA_MODE_READ | DMA_MODE_AUTOINIT */
+	outl(va, s->ddmabase);
+	outw(s->dma_adc.dmasize-1, s->ddmabase+4);
+	c = - s->dma_adc.fragsamples;
+	write_ctrl(s, 0xa4, c);
+	write_ctrl(s, 0xa5, c >> 8);
+	outb(0, s->ddmabase+0xf);
+	s->dma_adc.ready = 1;
+	return 0;
+}
+
+extern inline int prog_dmabuf_dac(struct solo1_state *s)
+{
+	unsigned long va;
+	int c;
+
+	stop_dac(s);
+	if ((c = prog_dmabuf(s, &s->dma_dac, GFP_KERNEL)))
+		return c;
+	memset(s->dma_dac.rawbuf, (s->fmt & (AFMT_U8 | AFMT_U16_LE)) ? 0 : 0x80, s->dma_dac.dmasize); /* almost correct for U16 */
+	va = virt_to_bus(s->dma_dac.rawbuf);
+	if ((va ^ (va + s->dma_dac.dmasize - 1)) & ~((1<<20)-1))
+		panic("solo1: buffer crosses 1M boundary");
+	outl(va, s->iobase);
+	/* warning: s->dma_dac.dmasize & 0xffff must not be zero! i.e. this limits us to a 32k buffer */
+	outw(s->dma_dac.dmasize, s->iobase+4);
+	c = - s->dma_dac.fragsamples;
+	write_mixer(s, 0x74, c);
+	write_mixer(s, 0x76, c >> 8);
+	outb(0xa, s->iobase+6);
+	s->dma_dac.ready = 1;
+	return 0;
+}
+
+extern inline void clear_advance(void *buf, unsigned bsize, unsigned bptr, unsigned len, unsigned char c)
+{
+	if (bptr + len > bsize) {
+		unsigned x = bsize - bptr;
+		memset(((char *)buf) + bptr, c, x);
+		bptr = 0;
+		len -= x;
+	}
+	memset(((char *)buf) + bptr, c, len);
+}
+
+/* call with spinlock held! */
+
+static void solo1_update_ptr(struct solo1_state *s)
+{
+	int diff;
+	unsigned hwptr;
+
+	/* update ADC pointer */
+	if (s->ena & FMODE_READ) {
+		hwptr = (s->dma_adc.dmasize - 1 - inw(s->ddmabase+4)) % s->dma_adc.dmasize;
+                diff = (s->dma_adc.dmasize + hwptr - s->dma_adc.hwptr) % s->dma_adc.dmasize;
+                s->dma_adc.hwptr = hwptr;
+		s->dma_adc.total_bytes += diff;
+		s->dma_adc.count += diff;
+#if 0
+		printk(KERN_DEBUG "solo1: rd: hwptr %u swptr %u dmasize %u count %u\n",
+		       s->dma_adc.hwptr, s->dma_adc.swptr, s->dma_adc.dmasize, s->dma_adc.count);
+#endif
+		if (s->dma_adc.mapped) {
+			if (s->dma_adc.count >= (signed)s->dma_adc.fragsize)
+				wake_up(&s->dma_adc.wait);
+		} else {
+			if (s->dma_adc.count > (signed)(s->dma_adc.dmasize - ((3 * s->dma_adc.fragsize) >> 1))) {
+				s->ena &= ~FMODE_READ;
+				write_ctrl(s, 0xb8, 0xe);
+				s->dma_adc.error++;
+			}
+			if (s->dma_adc.count > 0)
+				wake_up(&s->dma_adc.wait);
+		}
+	}
+	/* update DAC pointer */
+	if (s->ena & FMODE_WRITE) {
+                hwptr = (s->dma_dac.dmasize - inw(s->iobase+4)) % s->dma_dac.dmasize;
+                diff = (s->dma_dac.dmasize + hwptr - s->dma_dac.hwptr) % s->dma_dac.dmasize;
+                s->dma_dac.hwptr = hwptr;
+		s->dma_dac.total_bytes += diff;
+#if 0
+		printk(KERN_DEBUG "solo1: wr: hwptr %u swptr %u dmasize %u count %u\n",
+		       s->dma_dac.hwptr, s->dma_dac.swptr, s->dma_dac.dmasize, s->dma_dac.count);
+#endif
+		if (s->dma_dac.mapped) {
+			s->dma_dac.count += diff;
+			if (s->dma_dac.count >= (signed)s->dma_dac.fragsize)
+				wake_up(&s->dma_dac.wait);
+		} else {
+			s->dma_dac.count -= diff;
+			if (s->dma_dac.count <= 0) {
+				s->ena &= ~FMODE_WRITE;
+				write_mixer(s, 0x78, 0x12);
+				s->dma_dac.error++;
+			} else if (s->dma_dac.count <= (signed)s->dma_dac.fragsize && !s->dma_dac.endcleared) {
+				clear_advance(s->dma_dac.rawbuf, s->dma_dac.dmasize, s->dma_dac.swptr,
+					      s->dma_dac.fragsize, (s->fmt & (AFMT_U8 | AFMT_U16_LE)) ? 0 : 0x80);
+				s->dma_dac.endcleared = 1;
+			}
+			if (s->dma_dac.count < (signed)s->dma_dac.dmasize)
+				wake_up(&s->dma_dac.wait);
+		}
+	}
+}
+
+/* --------------------------------------------------------------------- */
+
+static void prog_codec(struct solo1_state *s)
+{
+	unsigned long flags;
+	int fdiv, filter;
+	unsigned char c;
+
+	reset_ctrl(s);
+	write_seq(s, 0xd3);
+	/* program sampling rates */
+	filter = s->rate * 9 / 20; /* Set filter roll-off to 90% of rate/2 */
+	fdiv = 256 - 7160000 / (filter * 82);
+	spin_lock_irqsave(&s->lock, flags);
+	write_ctrl(s, 0xa1, s->clkdiv);
+	write_ctrl(s, 0xa2, fdiv);
+	write_mixer(s, 0x70, s->clkdiv);
+	write_mixer(s, 0x72, fdiv);
+	/* program ADC parameters */
+	write_ctrl(s, 0xb8, 0xe);
+	write_ctrl(s, 0xb9, /*0x1*/0);
+	write_ctrl(s, 0xa8, (s->channels > 1) ? 0x11 : 0x12);
+	c = 0xd0;
+	if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+		c |= 0x04;
+	if (s->fmt & (AFMT_S16_LE | AFMT_S8))
+		c |= 0x20;
+	if (s->channels > 1)
+		c ^= 0x48;
+	write_ctrl(s, 0xb7, (c & 0x70) | 1);
+	write_ctrl(s, 0xb7, c);
+	write_ctrl(s, 0xb1, 0x50);
+	write_ctrl(s, 0xb2, 0x50);
+	/* program DAC parameters */
+	c = 0x40;
+	if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+		c |= 1;
+	if (s->fmt & (AFMT_S16_LE | AFMT_S8))
+		c |= 4;
+	if (s->channels > 1)
+		c |= 2;
+	write_mixer(s, 0x7a, c);
+	write_mixer(s, 0x78, 0x10);
+	s->ena = 0;
+	spin_unlock_irqrestore(&s->lock, flags);
+}
+
+/* --------------------------------------------------------------------- */
+
+static const char invalid_magic[] = KERN_CRIT "solo1: invalid magic value\n";
+
+#define VALIDATE_STATE(s)                         \
+({                                                \
+	if (!(s) || (s)->magic != SOLO1_MAGIC) { \
+		printk(invalid_magic);            \
+		return -ENXIO;                    \
+	}                                         \
+})
+
+/* --------------------------------------------------------------------- */
+
+static int mixer_ioctl(struct solo1_state *s, unsigned int cmd, unsigned long arg)
+{
+	static const unsigned int mixer_src[8] = {
+		SOUND_MASK_MIC, SOUND_MASK_MIC, SOUND_MASK_CD, SOUND_MASK_VOLUME,
+		SOUND_MASK_MIC, 0, SOUND_MASK_LINE, 0
+	};
+	static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
+		[SOUND_MIXER_PCM]     = 1,   /* voice */
+		[SOUND_MIXER_SYNTH]   = 2,   /* FM */
+		[SOUND_MIXER_CD]      = 3,   /* CD */
+		[SOUND_MIXER_LINE]    = 4,   /* Line */
+		[SOUND_MIXER_LINE1]   = 5,   /* AUX */
+		[SOUND_MIXER_MIC]     = 6,   /* Mic */
+		[SOUND_MIXER_LINE2]   = 7,   /* Mono in */
+		[SOUND_MIXER_SPEAKER] = 8,   /* Speaker */
+		[SOUND_MIXER_RECLEV]  = 9,   /* Recording level */
+		[SOUND_MIXER_VOLUME]  = 10   /* Master Volume */
+	};
+	static const unsigned char mixreg[] = {
+		0x7c,   /* voice */
+		0x36,   /* FM */
+		0x38,   /* CD */
+		0x3e,   /* Line */
+		0x3a,   /* AUX */
+		0x1a,   /* Mic */
+		0x6d    /* Mono in */
+	};
+	unsigned char l, r, rl, rr, vidx;
+	int i, val;
+
+	VALIDATE_STATE(s);
+
+	if (cmd == SOUND_MIXER_PRIVATE1) {
+		/* enable/disable/query mixer preamp */
+		get_user_ret(val, (int *)arg, -EFAULT);
+		if (val != -1) {
+			val = val ? 0xff : 0xf7;
+			write_mixer(s, 0x7d, (read_mixer(s, 0x7d) | 0x08) & val);
+		}
+		val = (read_mixer(s, 0x7d) & 0x08) ? 1 : 0;
+		return put_user(val, (int *)arg);
+	}
+	if (cmd == SOUND_MIXER_PRIVATE2) {
+		/* enable/disable/query spatializer */
+		get_user_ret(val, (int *)arg, -EFAULT);
+		if (val != -1) {
+			val &= 0x3f;
+			write_mixer(s, 0x52, val);
+			write_mixer(s, 0x50, val ? 0x08 : 0);
+		}
+		return put_user(read_mixer(s, 0x52), (int *)arg);
+	}
+        if (cmd == SOUND_MIXER_INFO) {
+		mixer_info info;
+		strncpy(info.id, "Solo1", sizeof(info.id));
+		strncpy(info.name, "ESS Solo1", sizeof(info.name));
+		info.modify_counter = s->mix.modcnt;
+		if (copy_to_user((void *)arg, &info, sizeof(info)))
+			return -EFAULT;
+		return 0;
+	}
+	if (cmd == SOUND_OLD_MIXER_INFO) {
+		_old_mixer_info info;
+		strncpy(info.id, "Solo1", sizeof(info.id));
+		strncpy(info.name, "ESS Solo1", sizeof(info.name));
+		if (copy_to_user((void *)arg, &info, sizeof(info)))
+			return -EFAULT;
+		return 0;
+	}
+	if (cmd == OSS_GETVERSION)
+		return put_user(SOUND_VERSION, (int *)arg);
+	if (_IOC_TYPE(cmd) != 'M' || _IOC_SIZE(cmd) != sizeof(int))
+                return -EINVAL;
+        if (_IOC_DIR(cmd) == _IOC_READ) {
+                switch (_IOC_NR(cmd)) {
+                case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
+			return put_user(mixer_src[read_mixer(s, 0x1c) & 7], (int *)arg);
+
+                case SOUND_MIXER_DEVMASK: /* Arg contains a bit for each supported device */
+			return put_user(SOUND_MASK_PCM | SOUND_MASK_SYNTH | SOUND_MASK_CD |
+					SOUND_MASK_LINE | SOUND_MASK_LINE1 | SOUND_MASK_MIC |
+					SOUND_MASK_VOLUME | SOUND_MASK_LINE2 | SOUND_MASK_RECLEV |
+					SOUND_MASK_SPEAKER, (int *)arg);
+
+                case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
+			return put_user(SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME, (int *)arg);
+
+                case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
+			return put_user(SOUND_MASK_PCM | SOUND_MASK_SYNTH | SOUND_MASK_CD |
+					SOUND_MASK_LINE | SOUND_MASK_LINE1 | SOUND_MASK_MIC |
+					SOUND_MASK_VOLUME | SOUND_MASK_LINE2 | SOUND_MASK_RECLEV, (int *)arg);
+			
+                case SOUND_MIXER_CAPS:
+			return put_user(SOUND_CAP_EXCL_INPUT, (int *)arg);
+
+		default:
+			i = _IOC_NR(cmd);
+                        if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
+                                return -EINVAL;
+			return put_user(s->mix.vol[vidx-1], (int *)arg);
+		}
+	}
+        if (_IOC_DIR(cmd) != (_IOC_READ|_IOC_WRITE)) 
+		return -EINVAL;
+	s->mix.modcnt++;
+	switch (_IOC_NR(cmd)) {
+	case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
+#if 0
+	        {
+			static const unsigned char regs[] = {
+				0x1c, 0x1a, 0x36, 0x38, 0x3a, 0x3c, 0x3e, 0x60, 0x62, 0x6d, 0x7c
+			};
+			int i;
+			
+			for (i = 0; i < sizeof(regs); i++)
+				printk(KERN_DEBUG "solo1: mixer reg 0x%02x: 0x%02x\n",
+				       regs[i], read_mixer(s, regs[i]));
+			printk(KERN_DEBUG "solo1: ctrl reg 0x%02x: 0x%02x\n",
+			       0xb4, read_ctrl(s, 0xb4));
+		}
+#endif
+	        get_user_ret(val, (int *)arg, -EFAULT);
+                i = hweight32(val);
+                if (i == 0)
+                        return 0;
+                else if (i > 1) 
+                        val &= ~mixer_src[read_mixer(s, 0x1c) & 7];
+		for (i = 0; i < 8; i++) {
+			if (mixer_src[i] & val)
+				break;
+		}
+		if (i > 7)
+			return 0;
+		write_mixer(s, 0x1c, i);
+		return 0;
+
+	case SOUND_MIXER_VOLUME:
+		get_user_ret(val, (int *)arg, -EFAULT);
+		l = val & 0xff;
+		if (l > 100)
+			l = 100;
+		r = (val >> 8) & 0xff;
+		if (r > 100)
+			r = 100;
+		if (l < 6) {
+			rl = 0x40;
+			l = 0;
+		} else {
+			rl = (l * 2 - 11) / 3;
+			l = (rl * 3 + 11) / 2;
+		}
+		if (r < 6) {
+			rr = 0x40;
+			r = 0;
+		} else {
+			rr = (r * 2 - 11) / 3;
+			r = (rr * 3 + 11) / 2;
+		}
+		write_mixer(s, 0x60, rl);
+		write_mixer(s, 0x62, rr);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[9] = ((unsigned int)r << 8) | l;
+#else
+                s->mix.vol[9] = val;
+#endif
+		return put_user(s->mix.vol[9], (int *)arg);
+
+	case SOUND_MIXER_SPEAKER:
+		get_user_ret(val, (int *)arg, -EFAULT);
+		l = val & 0xff;
+		if (l > 100)
+			l = 100;
+		else if (l < 2)
+			l = 2;
+		rl = (l - 2) / 14;
+		l = rl * 14 + 2;
+		write_mixer(s, 0x3c, rl);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[7] = l * 0x101;
+#else
+                s->mix.vol[7] = val;
+#endif
+		return put_user(s->mix.vol[7], (int *)arg);
+
+	case SOUND_MIXER_RECLEV:
+		get_user_ret(val, (int *)arg, -EFAULT);
+		l = (val << 1) & 0x1fe;
+		if (l > 200)
+			l = 200;
+		else if (l < 5)
+			l = 5;
+		r = (val >> 7) & 0x1fe;
+		if (r > 200)
+			r = 200;
+		else if (r < 5)
+			r = 5;
+		rl = (l - 5) / 13;
+		rr = (r - 5) / 13;
+		r = (rl * 13 + 5) / 2;
+		l = (rr * 13 + 5) / 2;
+		write_ctrl(s, 0xb4, (rl << 4) | rr);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[8] = ((unsigned int)r << 8) | l;
+#else
+                s->mix.vol[8] = val;
+#endif
+		return put_user(s->mix.vol[8], (int *)arg);
+
+	default:
+		i = _IOC_NR(cmd);
+		if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
+			return -EINVAL;
+		get_user_ret(val, (int *)arg, -EFAULT);
+		l = (val << 1) & 0x1fe;
+		if (l > 200)
+			l = 200;
+		else if (l < 5)
+			l = 5;
+		r = (val >> 7) & 0x1fe;
+		if (r > 200)
+			r = 200;
+		else if (r < 5)
+			r = 5;
+		rl = (l - 5) / 13;
+		rr = (r - 5) / 13;
+		r = (rl * 13 + 5) / 2;
+		l = (rr * 13 + 5) / 2;
+		write_mixer(s, mixreg[vidx-1], (rl << 4) | rr);
+#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
+                s->mix.vol[vidx-1] = ((unsigned int)r << 8) | l;
+#else
+                s->mix.vol[vidx-1] = val;
+#endif
+		return put_user(s->mix.vol[vidx-1], (int *)arg);
+	}
+}
+
+/* --------------------------------------------------------------------- */
+
+static loff_t solo1_llseek(struct file *file, loff_t offset, int origin)
+{
+        return -ESPIPE;
+}
+
+/* --------------------------------------------------------------------- */
+
+static int solo1_open_mixdev(struct inode *inode, struct file *file)
+{
+	int minor = MINOR(inode->i_rdev);
+	struct solo1_state *s = devs;
+
+	while (s && s->dev_mixer != minor)
+		s = s->next;
+	if (!s)
+		return -ENODEV;
+       	VALIDATE_STATE(s);
+	file->private_data = s;
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int solo1_release_mixdev(struct inode *inode, struct file *file)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	
+	VALIDATE_STATE(s);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static int solo1_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	return mixer_ioctl((struct solo1_state *)file->private_data, cmd, arg);
+}
+
+static /*const*/ struct file_operations solo1_mixer_fops = {
+	&solo1_llseek,
+	NULL,  /* read */
+	NULL,  /* write */
+	NULL,  /* readdir */
+	NULL,  /* poll */
+	&solo1_ioctl_mixdev,
+	NULL,  /* mmap */
+	&solo1_open_mixdev,
+	NULL,  /* flush */
+	&solo1_release_mixdev,
+	NULL,  /* fsync */
+	NULL,  /* fasync */
+	NULL,  /* check_media_change */
+	NULL,  /* revalidate */
+	NULL,  /* lock */
+};
+
+/* --------------------------------------------------------------------- */
+
+static int drain_dac(struct solo1_state *s, int nonblock)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	unsigned long flags;
+	int count;
+	unsigned tmo;
+	
+	if (s->dma_dac.mapped)
+		return 0;
+        __set_current_state(TASK_INTERRUPTIBLE);
+        add_wait_queue(&s->dma_dac.wait, &wait);
+        for (;;) {
+                spin_lock_irqsave(&s->lock, flags);
+		count = s->dma_dac.count;
+                spin_unlock_irqrestore(&s->lock, flags);
+		if (count <= 0)
+			break;
+		if (signal_pending(current))
+                        break;
+                if (nonblock) {
+                        remove_wait_queue(&s->dma_dac.wait, &wait);
+                        set_current_state(TASK_RUNNING);
+                        return -EBUSY;
+                }
+		tmo = 3 * HZ * (count + s->dma_dac.fragsize) / 2 / s->rate;
+		if (s->fmt & (AFMT_S16_LE | AFMT_U16_LE))
+			tmo >>= 1;
+		if (s->channels > 1)
+			tmo >>= 1;
+                if (!schedule_timeout(tmo + 1))
+                        printk(KERN_DEBUG "solo1: dma timed out??\n");
+        }
+        remove_wait_queue(&s->dma_dac.wait, &wait);
+        set_current_state(TASK_RUNNING);
+        if (signal_pending(current))
+                return -ERESTARTSYS;
+        return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static ssize_t solo1_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	ssize_t ret;
+	unsigned long flags;
+	unsigned swptr;
+	int cnt;
+
+	VALIDATE_STATE(s);
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+	if (s->dma_adc.mapped)
+		return -ENXIO;
+	if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
+		return ret;
+	if (!access_ok(VERIFY_WRITE, buffer, count))
+		return -EFAULT;
+	ret = 0;
+	while (count > 0) {
+		spin_lock_irqsave(&s->lock, flags);
+		swptr = s->dma_adc.swptr;
+		cnt = s->dma_adc.dmasize-swptr;
+		if (s->dma_adc.count < cnt)
+			cnt = s->dma_adc.count;
+		spin_unlock_irqrestore(&s->lock, flags);
+		if (cnt > count)
+			cnt = count;
+#ifdef DEBUGREC
+		printk(KERN_DEBUG "solo1_read: reg B8: 0x%02x  DMAstat: 0x%02x  DMAcnt: 0x%04x  SBstat: 0x%02x  cnt: %u\n", 
+		       read_ctrl(s, 0xb8), inb(s->ddmabase+8), inw(s->ddmabase+4), inb(s->sbbase+0xc), cnt);
+#endif
+		if (cnt <= 0) {
+			start_adc(s);
+#ifdef DEBUGREC
+			printk(KERN_DEBUG "solo1_read: regs: A1: 0x%02x  A2: 0x%02x  A4: 0x%02x  A5: 0x%02x  A8: 0x%02x\n"
+			       KERN_DEBUG "solo1_read: regs: B1: 0x%02x  B2: 0x%02x  B7: 0x%02x  B8: 0x%02x  B9: 0x%02x\n"
+			       KERN_DEBUG "solo1_read: DMA: addr: 0x%08x cnt: 0x%04x stat: 0x%02x mask: 0x%02x\n"  
+			       KERN_DEBUG "solo1_read: SBstat: 0x%02x  cnt: %u\n",
+			       read_ctrl(s, 0xa1), read_ctrl(s, 0xa2), read_ctrl(s, 0xa4), read_ctrl(s, 0xa5), read_ctrl(s, 0xa8), 
+			       read_ctrl(s, 0xb1), read_ctrl(s, 0xb2), read_ctrl(s, 0xb7), read_ctrl(s, 0xb8), read_ctrl(s, 0xb9), 
+			       inl(s->ddmabase), inw(s->ddmabase+4), inb(s->ddmabase+8), inb(s->ddmabase+15), inb(s->sbbase+0xc), cnt);
+#endif
+			if (inb(s->ddmabase+15) & 1)
+				printk(KERN_ERR "solo1: cannot start recording, DDMA mask bit stuck at 1\n");
+			if (file->f_flags & O_NONBLOCK)
+				return ret ? ret : -EAGAIN;
+			interruptible_sleep_on(&s->dma_adc.wait);
+#ifdef DEBUGREC
+			printk(KERN_DEBUG "solo1_read: regs: A1: 0x%02x  A2: 0x%02x  A4: 0x%02x  A5: 0x%02x  A8: 0x%02x\n"
+			       KERN_DEBUG "solo1_read: regs: B1: 0x%02x  B2: 0x%02x  B7: 0x%02x  B8: 0x%02x  B9: 0x%02x\n"
+			       KERN_DEBUG "solo1_read: DMA: addr: 0x%08x cnt: 0x%04x stat: 0x%02x mask: 0x%02x\n"  
+			       KERN_DEBUG "solo1_read: SBstat: 0x%02x  cnt: %u\n",
+			       read_ctrl(s, 0xa1), read_ctrl(s, 0xa2), read_ctrl(s, 0xa4), read_ctrl(s, 0xa5), read_ctrl(s, 0xa8), 
+			       read_ctrl(s, 0xb1), read_ctrl(s, 0xb2), read_ctrl(s, 0xb7), read_ctrl(s, 0xb8), read_ctrl(s, 0xb9), 
+			       inl(s->ddmabase), inw(s->ddmabase+4), inb(s->ddmabase+8), inb(s->ddmabase+15), inb(s->sbbase+0xc), cnt);
+#endif
+			if (signal_pending(current))
+				return ret ? ret : -ERESTARTSYS;
+			continue;
+		}
+		if (copy_to_user(buffer, s->dma_adc.rawbuf + swptr, cnt))
+			return ret ? ret : -EFAULT;
+		swptr = (swptr + cnt) % s->dma_adc.dmasize;
+		spin_lock_irqsave(&s->lock, flags);
+		s->dma_adc.swptr = swptr;
+		s->dma_adc.count -= cnt;
+		spin_unlock_irqrestore(&s->lock, flags);
+		count -= cnt;
+		buffer += cnt;
+		ret += cnt;
+		start_adc(s);
+#ifdef DEBUGREC
+		printk(KERN_DEBUG "solo1_read: reg B8: 0x%02x  DMAstat: 0x%02x  DMAcnt: 0x%04x  SBstat: 0x%02x\n", 
+		       read_ctrl(s, 0xb8), inb(s->ddmabase+8), inw(s->ddmabase+4), inb(s->sbbase+0xc));
+#endif
+	}
+	return ret;
+}
+
+static ssize_t solo1_write(struct file *file, const char *buffer, size_t count, loff_t *ppos)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	ssize_t ret;
+	unsigned long flags;
+	unsigned swptr;
+	int cnt;
+
+	VALIDATE_STATE(s);
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+	if (s->dma_dac.mapped)
+		return -ENXIO;
+	if (!s->dma_dac.ready && (ret = prog_dmabuf_dac(s)))
+		return ret;
+	if (!access_ok(VERIFY_READ, buffer, count))
+		return -EFAULT;
+#if 0
+	printk(KERN_DEBUG "solo1_write: reg 70: 0x%02x  71: 0x%02x  72: 0x%02x  74: 0x%02x  76: 0x%02x  78: 0x%02x  7A: 0x%02x\n"
+	       KERN_DEBUG "solo1_write: DMA: addr: 0x%08x  cnt: 0x%04x  stat: 0x%02x  SBstat: 0x%02x\n", 
+	       read_mixer(s, 0x70), read_mixer(s, 0x71), read_mixer(s, 0x72), read_mixer(s, 0x74), read_mixer(s, 0x76),
+	       read_mixer(s, 0x78), read_mixer(s, 0x7a), inl(s->iobase), inw(s->iobase+4), inb(s->iobase+6), inb(s->sbbase+0xc));
+	printk(KERN_DEBUG "solo1_write: reg 78: 0x%02x  reg 7A: 0x%02x  DMAcnt: 0x%04x  DMAstat: 0x%02x  SBstat: 0x%02x\n", 
+	       read_mixer(s, 0x78), read_mixer(s, 0x7a), inw(s->iobase+4), inb(s->iobase+6), inb(s->sbbase+0xc));
+#endif
+	ret = 0;
+	while (count > 0) {
+		spin_lock_irqsave(&s->lock, flags);
+		if (s->dma_dac.count < 0) {
+			s->dma_dac.count = 0;
+			s->dma_dac.swptr = s->dma_dac.hwptr;
+		}
+		swptr = s->dma_dac.swptr;
+		cnt = s->dma_dac.dmasize-swptr;
+		if (s->dma_dac.count + cnt > s->dma_dac.dmasize)
+			cnt = s->dma_dac.dmasize - s->dma_dac.count;
+		spin_unlock_irqrestore(&s->lock, flags);
+		if (cnt > count)
+			cnt = count;
+		if (cnt <= 0) {
+			start_dac(s);
+			if (file->f_flags & O_NONBLOCK)
+				return ret ? ret : -EAGAIN;
+			interruptible_sleep_on(&s->dma_dac.wait);
+			if (signal_pending(current))
+				return ret ? ret : -ERESTARTSYS;
+			continue;
+		}
+		if (copy_from_user(s->dma_dac.rawbuf + swptr, buffer, cnt))
+			return ret ? ret : -EFAULT;
+		swptr = (swptr + cnt) % s->dma_dac.dmasize;
+		spin_lock_irqsave(&s->lock, flags);
+		s->dma_dac.swptr = swptr;
+		s->dma_dac.count += cnt;
+		s->dma_dac.endcleared = 0;
+		spin_unlock_irqrestore(&s->lock, flags);
+		count -= cnt;
+		buffer += cnt;
+		ret += cnt;
+		start_dac(s);
+	}
+	return ret;
+}
+
+static unsigned int solo1_poll(struct file *file, struct poll_table_struct *wait)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	unsigned long flags;
+	unsigned int mask = 0;
+
+	VALIDATE_STATE(s);
+	if (file->f_mode & FMODE_WRITE)
+		poll_wait(file, &s->dma_dac.wait, wait);
+	if (file->f_mode & FMODE_READ)
+		poll_wait(file, &s->dma_adc.wait, wait);
+	spin_lock_irqsave(&s->lock, flags);
+	solo1_update_ptr(s);
+	if (file->f_mode & FMODE_READ) {
+		if (s->dma_adc.mapped) {
+			if (s->dma_adc.count >= (signed)s->dma_adc.fragsize)
+				mask |= POLLIN | POLLRDNORM;
+		} else {
+			if (s->dma_adc.count > 0)
+				mask |= POLLIN | POLLRDNORM;
+		}
+	}
+	if (file->f_mode & FMODE_WRITE) {
+		if (s->dma_dac.mapped) {
+			if (s->dma_dac.count >= (signed)s->dma_dac.fragsize) 
+				mask |= POLLOUT | POLLWRNORM;
+		} else {
+			if ((signed)s->dma_dac.dmasize > s->dma_dac.count)
+				mask |= POLLOUT | POLLWRNORM;
+		}
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+	return mask;
+}
+
+
+static int solo1_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	struct dmabuf *db;
+	int ret;
+	unsigned long size;
+
+	VALIDATE_STATE(s);
+	if (vma->vm_flags & VM_WRITE) {
+		if ((ret = prog_dmabuf_dac(s)) != 0)
+			return ret;
+		db = &s->dma_dac;
+	} else if (vma->vm_flags & VM_READ) {
+		if ((ret = prog_dmabuf_adc(s)) != 0)
+			return ret;
+		db = &s->dma_adc;
+	} else 
+		return -EINVAL;
+	if (vma->vm_offset != 0)
+		return -EINVAL;
+	size = vma->vm_end - vma->vm_start;
+	if (size > (PAGE_SIZE << db->buforder))
+		return -EINVAL;
+	if (remap_page_range(vma->vm_start, virt_to_phys(db->rawbuf), size, vma->vm_page_prot))
+		return -EAGAIN;
+	db->mapped = 1;
+	return 0;
+}
+
+static int solo1_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	unsigned long flags;
+        audio_buf_info abinfo;
+        count_info cinfo;
+	int val, mapped, ret;
+        int div1, div2;
+        unsigned rate1, rate2;
+
+	VALIDATE_STATE(s);
+        mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
+		((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
+	switch (cmd) {
+	case OSS_GETVERSION:
+		return put_user(SOUND_VERSION, (int *)arg);
+
+	case SNDCTL_DSP_SYNC:
+		if (file->f_mode & FMODE_WRITE)
+			return drain_dac(s, 0/*file->f_flags & O_NONBLOCK*/);
+		return 0;
+		
+	case SNDCTL_DSP_SETDUPLEX:
+		return 0;
+
+	case SNDCTL_DSP_GETCAPS:
+		return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg);
+		
+        case SNDCTL_DSP_RESET:
+		if (file->f_mode & FMODE_WRITE) {
+			stop_dac(s);
+			synchronize_irq();
+			s->dma_dac.swptr = s->dma_dac.hwptr = s->dma_dac.count = s->dma_dac.total_bytes = 0;
+		}
+		if (file->f_mode & FMODE_READ) {
+			stop_adc(s);
+			synchronize_irq();
+			s->dma_adc.swptr = s->dma_adc.hwptr = s->dma_adc.count = s->dma_adc.total_bytes = 0;
+		}
+		prog_codec(s);
+		return 0;
+
+        case SNDCTL_DSP_SPEED:
+                get_user_ret(val, (int *)arg, -EFAULT);
+		if (val >= 0) {
+			stop_adc(s);
+			stop_dac(s);
+			s->dma_adc.ready = s->dma_dac.ready = 0;
+			/* program sampling rates */
+			if (val > 48000)
+				val = 48000;
+			if (val < 6300)
+				val = 6300;
+			div1 = (768000 + val / 2) / val;
+			rate1 = (768000 + div1 / 2) / div1;
+			div1 = -div1;
+			div2 = (793800 + val / 2) / val;
+			rate2 = (793800 + div2 / 2) / div2;
+			div2 = (-div2) & 0x7f;
+			if (abs(val - rate2) < abs(val - rate1)) {
+				rate1 = rate2;
+				div1 = div2;
+			}
+			s->rate = rate1;
+			s->clkdiv = div1;
+			prog_codec(s);
+		}
+		return put_user(s->rate, (int *)arg);
+		
+        case SNDCTL_DSP_STEREO:
+                get_user_ret(val, (int *)arg, -EFAULT);
+		stop_adc(s);
+		stop_dac(s);
+		s->dma_adc.ready = s->dma_dac.ready = 0;
+		/* program channels */
+		s->channels = val ? 2 : 1;
+		prog_codec(s);
+		return 0;
+
+        case SNDCTL_DSP_CHANNELS:
+                get_user_ret(val, (int *)arg, -EFAULT);
+		if (val != 0) {
+			stop_adc(s);
+			stop_dac(s);
+			s->dma_adc.ready = s->dma_dac.ready = 0;
+			/* program channels */
+			s->channels = val ? 2 : 1;
+			prog_codec(s);
+		}
+		return put_user(s->channels, (int *)arg);
+
+	case SNDCTL_DSP_GETFMTS: /* Returns a mask */
+                return put_user(AFMT_S16_LE|AFMT_U16_LE|AFMT_S8|AFMT_U8, (int *)arg);
+
+	case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
+		get_user_ret(val, (int *)arg, -EFAULT);
+		if (val != AFMT_QUERY) {
+			stop_adc(s);
+			stop_dac(s);
+			s->dma_adc.ready = s->dma_dac.ready = 0;
+			/* program format */
+			if (val != AFMT_S16_LE && val != AFMT_U16_LE && 
+			    val != AFMT_S8 && val != AFMT_U8)
+				val = AFMT_U8;
+			s->fmt = val;
+			prog_codec(s);
+		}
+		return put_user(s->fmt, (int *)arg);
+
+	case SNDCTL_DSP_POST:
+                return 0;
+
+        case SNDCTL_DSP_GETTRIGGER:
+		val = 0;
+		if (file->f_mode & s->ena & FMODE_READ)
+			val |= PCM_ENABLE_INPUT;
+		if (file->f_mode & s->ena & FMODE_WRITE)
+			val |= PCM_ENABLE_OUTPUT;
+		return put_user(val, (int *)arg);
+
+	case SNDCTL_DSP_SETTRIGGER:
+		get_user_ret(val, (int *)arg, -EFAULT);
+		if (file->f_mode & FMODE_READ) {
+			if (val & PCM_ENABLE_INPUT) {
+				if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
+					return ret;
+				start_adc(s);
+				if (inb(s->ddmabase+15) & 1)
+					printk(KERN_ERR "solo1: cannot start recording, DDMA mask bit stuck at 1\n");
+			} else
+				stop_adc(s);
+		}
+		if (file->f_mode & FMODE_WRITE) {
+			if (val & PCM_ENABLE_OUTPUT) {
+				if (!s->dma_dac.ready && (ret = prog_dmabuf_dac(s)))
+					return ret;
+				start_dac(s);
+			} else
+				stop_dac(s);
+		}
+		return 0;
+
+	case SNDCTL_DSP_GETOSPACE:
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		if (!(s->ena & FMODE_WRITE) && (val = prog_dmabuf_dac(s)) != 0)
+			return val;
+		spin_lock_irqsave(&s->lock, flags);
+		solo1_update_ptr(s);
+		abinfo.fragsize = s->dma_dac.fragsize;
+                abinfo.bytes = s->dma_dac.dmasize - s->dma_dac.count;
+                abinfo.fragstotal = s->dma_dac.numfrag;
+                abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;      
+		spin_unlock_irqrestore(&s->lock, flags);
+		return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+	case SNDCTL_DSP_GETISPACE:
+		if (!(file->f_mode & FMODE_READ))
+			return -EINVAL;
+		if (!(s->ena & FMODE_READ) && (val = prog_dmabuf_adc(s)) != 0)
+			return val;
+		spin_lock_irqsave(&s->lock, flags);
+		solo1_update_ptr(s);
+		abinfo.fragsize = s->dma_adc.fragsize;
+                abinfo.bytes = s->dma_adc.count;
+                abinfo.fragstotal = s->dma_adc.numfrag;
+                abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift;      
+		spin_unlock_irqrestore(&s->lock, flags);
+		return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+
+        case SNDCTL_DSP_NONBLOCK:
+                file->f_flags |= O_NONBLOCK;
+                return 0;
+
+        case SNDCTL_DSP_GETODELAY:
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		spin_lock_irqsave(&s->lock, flags);
+		solo1_update_ptr(s);
+                val = s->dma_dac.count;
+		spin_unlock_irqrestore(&s->lock, flags);
+		return put_user(val, (int *)arg);
+
+        case SNDCTL_DSP_GETIPTR:
+		if (!(file->f_mode & FMODE_READ))
+			return -EINVAL;
+		spin_lock_irqsave(&s->lock, flags);
+		solo1_update_ptr(s);
+                cinfo.bytes = s->dma_adc.total_bytes;
+                cinfo.blocks = s->dma_adc.count >> s->dma_adc.fragshift;
+                cinfo.ptr = s->dma_adc.hwptr;
+		if (s->dma_adc.mapped)
+			s->dma_adc.count &= s->dma_adc.fragsize-1;
+		spin_unlock_irqrestore(&s->lock, flags);
+                return copy_to_user((void *)arg, &cinfo, sizeof(cinfo));
+
+        case SNDCTL_DSP_GETOPTR:
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		spin_lock_irqsave(&s->lock, flags);
+		solo1_update_ptr(s);
+                cinfo.bytes = s->dma_dac.total_bytes;
+                cinfo.blocks = s->dma_dac.count >> s->dma_dac.fragshift;
+                cinfo.ptr = s->dma_dac.hwptr;
+		if (s->dma_dac.mapped)
+			s->dma_dac.count &= s->dma_dac.fragsize-1;
+		spin_unlock_irqrestore(&s->lock, flags);
+                return copy_to_user((void *)arg, &cinfo, sizeof(cinfo));
+
+        case SNDCTL_DSP_GETBLKSIZE:
+		if (file->f_mode & FMODE_WRITE) {
+			if ((val = prog_dmabuf_dac(s)))
+				return val;
+			return put_user(s->dma_dac.fragsize, (int *)arg);
+		}
+		if ((val = prog_dmabuf_adc(s)))
+			return val;
+		return put_user(s->dma_adc.fragsize, (int *)arg);
+
+        case SNDCTL_DSP_SETFRAGMENT:
+                get_user_ret(val, (int *)arg, -EFAULT);
+		if (file->f_mode & FMODE_READ) {
+			s->dma_adc.ossfragshift = val & 0xffff;
+			s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff;
+			if (s->dma_adc.ossfragshift < 4)
+				s->dma_adc.ossfragshift = 4;
+			if (s->dma_adc.ossfragshift > 15)
+				s->dma_adc.ossfragshift = 15;
+			if (s->dma_adc.ossmaxfrags < 4)
+				s->dma_adc.ossmaxfrags = 4;
+		}
+		if (file->f_mode & FMODE_WRITE) {
+			s->dma_dac.ossfragshift = val & 0xffff;
+			s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff;
+			if (s->dma_dac.ossfragshift < 4)
+				s->dma_dac.ossfragshift = 4;
+			if (s->dma_dac.ossfragshift > 15)
+				s->dma_dac.ossfragshift = 15;
+			if (s->dma_dac.ossmaxfrags < 4)
+				s->dma_dac.ossmaxfrags = 4;
+		}
+		return 0;
+
+        case SNDCTL_DSP_SUBDIVIDE:
+		if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) ||
+		    (file->f_mode & FMODE_WRITE && s->dma_dac.subdivision))
+			return -EINVAL;
+                get_user_ret(val, (int *)arg, -EFAULT);
+		if (val != 1 && val != 2 && val != 4)
+			return -EINVAL;
+		if (file->f_mode & FMODE_READ)
+			s->dma_adc.subdivision = val;
+		if (file->f_mode & FMODE_WRITE)
+			s->dma_dac.subdivision = val;
+		return 0;
+
+        case SOUND_PCM_READ_RATE:
+		return put_user(s->rate, (int *)arg);
+
+        case SOUND_PCM_READ_CHANNELS:
+		return put_user(s->channels, (int *)arg);
+
+        case SOUND_PCM_READ_BITS:
+		return put_user((s->fmt & (AFMT_S8|AFMT_U8)) ? 8 : 16, (int *)arg);
+
+        case SOUND_PCM_WRITE_FILTER:
+        case SNDCTL_DSP_SETSYNCRO:
+        case SOUND_PCM_READ_FILTER:
+                return -EINVAL;
+		
+	}
+	return mixer_ioctl(s, cmd, arg);
+}
+
+static int solo1_release(struct inode *inode, struct file *file)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+
+	VALIDATE_STATE(s);
+	if (file->f_mode & FMODE_WRITE)
+		drain_dac(s, file->f_flags & O_NONBLOCK);
+	down(&s->open_sem);
+	if (file->f_mode & FMODE_WRITE) {
+		stop_dac(s);
+		outb(0, s->iobase+6);  /* disable DMA */
+		dealloc_dmabuf(&s->dma_dac);
+	}
+	if (file->f_mode & FMODE_READ) {
+		stop_adc(s);
+		outb(1, s->ddmabase+0xf); /* mask DMA channel */
+		outb(0, s->ddmabase+0xd); /* DMA master clear */
+		dealloc_dmabuf(&s->dma_adc);
+	}
+	s->open_mode &= ~(FMODE_READ | FMODE_WRITE);
+	up(&s->open_sem);
+	wake_up(&s->open_wait);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static int solo1_open(struct inode *inode, struct file *file)
+{
+	int minor = MINOR(inode->i_rdev);
+	struct solo1_state *s = devs;
+
+	while (s && ((s->dev_audio ^ minor) & ~0xf))
+		s = s->next;
+	if (!s)
+		return -ENODEV;
+       	VALIDATE_STATE(s);
+	file->private_data = s;
+	/* wait for device to become free */
+	down(&s->open_sem);
+	while (s->open_mode & (FMODE_READ | FMODE_WRITE)) {
+		if (file->f_flags & O_NONBLOCK) {
+			up(&s->open_sem);
+			return -EBUSY;
+		}
+		up(&s->open_sem);
+		interruptible_sleep_on(&s->open_wait);
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+		down(&s->open_sem);
+	}
+	s->fmt = AFMT_U8;
+	s->channels = 1;
+	s->rate = 8000;
+	s->clkdiv = 96 | 0x80;
+	s->ena = 0;
+	s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags = s->dma_adc.subdivision = 0;
+	s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags = s->dma_dac.subdivision = 0;
+	s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
+	up(&s->open_sem);
+	MOD_INC_USE_COUNT;
+	if (prog_dmabuf_dac(s) || prog_dmabuf_adc(s)) {
+		solo1_release(inode, file);
+		return -ENOMEM;
+	}
+	prog_codec(s);
+	return 0;
+}
+
+static /*const*/ struct file_operations solo1_audio_fops = {
+	&solo1_llseek,
+	&solo1_read,
+	&solo1_write,
+	NULL,  /* readdir */
+	&solo1_poll,
+	&solo1_ioctl,
+	&solo1_mmap,
+	&solo1_open,
+	NULL,  /* flush */
+	&solo1_release,
+	NULL,  /* fsync */
+	NULL,  /* fasync */
+	NULL,  /* check_media_change */
+	NULL,  /* revalidate */
+	NULL,  /* lock */
+};
+
+/* --------------------------------------------------------------------- */
+
+/* hold spinlock for the following! */
+static void solo1_handle_midi(struct solo1_state *s)
+{
+	unsigned char ch;
+	int wake;
+
+	if (!(s->mpubase))
+		return;
+	wake = 0;
+	while (!(inb(s->mpubase+1) & 0x80)) {
+		ch = inb(s->mpubase);
+		if (s->midi.icnt < MIDIINBUF) {
+			s->midi.ibuf[s->midi.iwr] = ch;
+			s->midi.iwr = (s->midi.iwr + 1) % MIDIINBUF;
+			s->midi.icnt++;
+		}
+		wake = 1;
+	}
+	if (wake)
+		wake_up(&s->midi.iwait);
+	wake = 0;
+	while (!(inb(s->mpubase+1) & 0x40) && s->midi.ocnt > 0) {
+		outb(s->midi.obuf[s->midi.ord], s->mpubase);
+		s->midi.ord = (s->midi.ord + 1) % MIDIOUTBUF;
+		s->midi.ocnt--;
+		if (s->midi.ocnt < MIDIOUTBUF-16)
+			wake = 1;
+	}
+	if (wake)
+		wake_up(&s->midi.owait);
+}
+
+static void solo1_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        struct solo1_state *s = (struct solo1_state *)dev_id;
+	unsigned int intsrc;
+	
+	/* fastpath out, to ease interrupt sharing */
+	intsrc = inb(s->iobase+7); /* get interrupt source(s) */
+	if (!intsrc)
+		return;
+	(void)inb(s->sbbase+0xe);  /* clear interrupt */
+	spin_lock(&s->lock);
+	/* clear audio interrupts first */
+	if (intsrc & 0x20)
+		write_mixer(s, 0x7a, read_mixer(s, 0x7a) & 0x7f);
+	solo1_update_ptr(s);
+	solo1_handle_midi(s);
+	spin_unlock(&s->lock);
+}
+
+static void solo1_midi_timer(unsigned long data)
+{
+	struct solo1_state *s = (struct solo1_state *)data;
+	unsigned long flags;
+	
+	spin_lock_irqsave(&s->lock, flags);
+	solo1_handle_midi(s);
+	spin_unlock_irqrestore(&s->lock, flags);
+	s->midi.timer.expires = jiffies+1;
+	add_timer(&s->midi.timer);
+}
+
+/* --------------------------------------------------------------------- */
+
+static ssize_t solo1_midi_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	DECLARE_WAITQUEUE(wait, current);
+	ssize_t ret;
+	unsigned long flags;
+	unsigned ptr;
+	int cnt;
+
+	VALIDATE_STATE(s);
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+	if (!access_ok(VERIFY_WRITE, buffer, count))
+		return -EFAULT;
+	if (count == 0)
+		return 0;
+	ret = 0;
+	add_wait_queue(&s->midi.iwait, &wait);
+	while (count > 0) {
+		spin_lock_irqsave(&s->lock, flags);
+		ptr = s->midi.ird;
+		cnt = MIDIINBUF - ptr;
+		if (s->midi.icnt < cnt)
+			cnt = s->midi.icnt;
+		spin_unlock_irqrestore(&s->lock, flags);
+		if (cnt > count)
+			cnt = count;
+		if (cnt <= 0) {
+			if (file->f_flags & O_NONBLOCK) {
+				if (!ret)
+					ret = -EAGAIN;
+				break;
+			}
+			__set_current_state(TASK_INTERRUPTIBLE);
+			schedule();
+			if (signal_pending(current)) {
+				if (!ret)
+					ret = -ERESTARTSYS;
+				break;
+			}
+			continue;
+		}
+		if (copy_to_user(buffer, s->midi.ibuf + ptr, cnt)) {
+			if (!ret)
+				ret = -EFAULT;
+			break;
+		}
+		ptr = (ptr + cnt) % MIDIINBUF;
+		spin_lock_irqsave(&s->lock, flags);
+		s->midi.ird = ptr;
+		s->midi.icnt -= cnt;
+		spin_unlock_irqrestore(&s->lock, flags);
+		count -= cnt;
+		buffer += cnt;
+		ret += cnt;
+		break;
+	}
+	__set_current_state(TASK_RUNNING);
+	remove_wait_queue(&s->midi.iwait, &wait);
+	return ret;
+}
+
+static ssize_t solo1_midi_write(struct file *file, const char *buffer, size_t count, loff_t *ppos)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	DECLARE_WAITQUEUE(wait, current);
+	ssize_t ret;
+	unsigned long flags;
+	unsigned ptr;
+	int cnt;
+
+	VALIDATE_STATE(s);
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+	if (!access_ok(VERIFY_READ, buffer, count))
+		return -EFAULT;
+	if (count == 0)
+		return 0;
+	ret = 0;
+        add_wait_queue(&s->midi.owait, &wait);
+	while (count > 0) {
+		spin_lock_irqsave(&s->lock, flags);
+		ptr = s->midi.owr;
+		cnt = MIDIOUTBUF - ptr;
+		if (s->midi.ocnt + cnt > MIDIOUTBUF)
+			cnt = MIDIOUTBUF - s->midi.ocnt;
+		if (cnt <= 0)
+			solo1_handle_midi(s);
+		spin_unlock_irqrestore(&s->lock, flags);
+		if (cnt > count)
+			cnt = count;
+		if (cnt <= 0) {
+			if (file->f_flags & O_NONBLOCK) {
+				if (!ret)
+					ret = -EAGAIN;
+				break;
+			}
+			__set_current_state(TASK_INTERRUPTIBLE);
+			schedule();
+			if (signal_pending(current)) {
+				if (!ret)
+					ret = -ERESTARTSYS;
+				break;
+			}
+			continue;
+		}
+		if (copy_from_user(s->midi.obuf + ptr, buffer, cnt)) {
+			if (!ret)
+				ret = -EFAULT;
+			break;
+		}
+		ptr = (ptr + cnt) % MIDIOUTBUF;
+		spin_lock_irqsave(&s->lock, flags);
+		s->midi.owr = ptr;
+		s->midi.ocnt += cnt;
+		spin_unlock_irqrestore(&s->lock, flags);
+		count -= cnt;
+		buffer += cnt;
+		ret += cnt;
+		spin_lock_irqsave(&s->lock, flags);
+		solo1_handle_midi(s);
+		spin_unlock_irqrestore(&s->lock, flags);
+	}
+	__set_current_state(TASK_RUNNING);
+	remove_wait_queue(&s->midi.owait, &wait);
+	return ret;
+}
+
+static unsigned int solo1_midi_poll(struct file *file, struct poll_table_struct *wait)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	unsigned long flags;
+	unsigned int mask = 0;
+
+	VALIDATE_STATE(s);
+	if (file->f_flags & FMODE_WRITE)
+		poll_wait(file, &s->midi.owait, wait);
+	if (file->f_flags & FMODE_READ)
+		poll_wait(file, &s->midi.iwait, wait);
+	spin_lock_irqsave(&s->lock, flags);
+	if (file->f_flags & FMODE_READ) {
+		if (s->midi.icnt > 0)
+			mask |= POLLIN | POLLRDNORM;
+	}
+	if (file->f_flags & FMODE_WRITE) {
+		if (s->midi.ocnt < MIDIOUTBUF)
+			mask |= POLLOUT | POLLWRNORM;
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+	return mask;
+}
+
+static int solo1_midi_open(struct inode *inode, struct file *file)
+{
+	int minor = MINOR(inode->i_rdev);
+	struct solo1_state *s = devs;
+	unsigned long flags;
+
+	while (s && s->dev_midi != minor)
+		s = s->next;
+	if (!s)
+		return -ENODEV;
+       	VALIDATE_STATE(s);
+	file->private_data = s;
+	/* wait for device to become free */
+	down(&s->open_sem);
+	while (s->open_mode & (file->f_mode << FMODE_MIDI_SHIFT)) {
+		if (file->f_flags & O_NONBLOCK) {
+			up(&s->open_sem);
+			return -EBUSY;
+		}
+		up(&s->open_sem);
+		interruptible_sleep_on(&s->open_wait);
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+		down(&s->open_sem);
+	}
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) {
+		s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
+		s->midi.ord = s->midi.owr = s->midi.ocnt = 0;
+		outb(0xff, s->mpubase+1); /* reset command */
+		outb(0x3f, s->mpubase+1); /* uart command */
+		if (!(inb(s->mpubase+1) & 0x80))
+			inb(s->mpubase);
+		s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
+		outb(0xb0, s->iobase + 7); /* enable A1, A2, MPU irq's */
+		init_timer(&s->midi.timer);
+		s->midi.timer.expires = jiffies+1;
+		s->midi.timer.data = (unsigned long)s;
+		s->midi.timer.function = solo1_midi_timer;
+		add_timer(&s->midi.timer);
+	}
+	if (file->f_mode & FMODE_READ) {
+		s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
+	}
+	if (file->f_mode & FMODE_WRITE) {
+		s->midi.ord = s->midi.owr = s->midi.ocnt = 0;
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+	s->open_mode |= (file->f_mode << FMODE_MIDI_SHIFT) & (FMODE_MIDI_READ | FMODE_MIDI_WRITE);
+	up(&s->open_sem);
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int solo1_midi_release(struct inode *inode, struct file *file)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	DECLARE_WAITQUEUE(wait, current);
+	unsigned long flags;
+	unsigned count, tmo;
+
+	VALIDATE_STATE(s);
+
+	if (file->f_mode & FMODE_WRITE) {
+		__set_current_state(TASK_INTERRUPTIBLE);
+		add_wait_queue(&s->midi.owait, &wait);
+		for (;;) {
+			spin_lock_irqsave(&s->lock, flags);
+			count = s->midi.ocnt;
+			spin_unlock_irqrestore(&s->lock, flags);
+			if (count <= 0)
+				break;
+			if (signal_pending(current))
+				break;
+			if (file->f_flags & O_NONBLOCK) {
+				remove_wait_queue(&s->midi.owait, &wait);
+				set_current_state(TASK_RUNNING);
+				return -EBUSY;
+			}
+			tmo = (count * HZ) / 3100;
+			if (!schedule_timeout(tmo ? : 1) && tmo)
+				printk(KERN_DEBUG "solo1: midi timed out??\n");
+		}
+		remove_wait_queue(&s->midi.owait, &wait);
+		set_current_state(TASK_RUNNING);
+	}
+	down(&s->open_sem);
+	s->open_mode &= (~(file->f_mode << FMODE_MIDI_SHIFT)) & (FMODE_MIDI_READ|FMODE_MIDI_WRITE);
+	spin_lock_irqsave(&s->lock, flags);
+	if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) {
+		outb(0x30, s->iobase + 7); /* enable A1, A2 irq's */
+		del_timer(&s->midi.timer);		
+	}
+	spin_unlock_irqrestore(&s->lock, flags);
+	up(&s->open_sem);
+	wake_up(&s->open_wait);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static /*const*/ struct file_operations solo1_midi_fops = {
+	&solo1_llseek,
+	&solo1_midi_read,
+	&solo1_midi_write,
+	NULL,  /* readdir */
+	&solo1_midi_poll,
+	NULL,  /* ioctl */
+	NULL,  /* mmap */
+	&solo1_midi_open,
+	NULL,  /* flush */
+	&solo1_midi_release,
+	NULL,  /* fsync */
+	NULL,  /* fasync */
+	NULL,  /* check_media_change */
+	NULL,  /* revalidate */
+	NULL,  /* lock */
+};
+
+/* --------------------------------------------------------------------- */
+
+static int solo1_dmfm_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	static const unsigned char op_offset[18] = {
+		0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
+		0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D,
+		0x10, 0x11, 0x12, 0x13, 0x14, 0x15
+	};
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	struct dm_fm_voice v;
+	struct dm_fm_note n;
+	struct dm_fm_params p;
+	unsigned int io;
+	unsigned int regb;
+
+	switch (cmd) {		
+	case FM_IOCTL_RESET:
+		for (regb = 0xb0; regb < 0xb9; regb++) {
+			outb(regb, s->sbbase);
+			outb(0, s->sbbase+1);
+			outb(regb, s->sbbase+2);
+			outb(0, s->sbbase+3);
+		}
+		return 0;
+
+	case FM_IOCTL_PLAY_NOTE:
+		if (copy_from_user(&n, (void *)arg, sizeof(n)))
+			return -EFAULT;
+		if (n.voice >= 18)
+			return -EINVAL;
+		if (n.voice >= 9) {
+			regb = n.voice - 9;
+			io = s->sbbase+2;
+		} else {
+			regb = n.voice;
+			io = s->sbbase;
+		}
+		outb(0xa0 + regb, io);
+		outb(n.fnum & 0xff, io+1);
+		outb(0xb0 + regb, io);
+		outb(((n.fnum >> 8) & 3) | ((n.octave & 7) << 2) | ((n.key_on & 1) << 5), io+1);
+		return 0;
+
+	case FM_IOCTL_SET_VOICE:
+		if (copy_from_user(&v, (void *)arg, sizeof(v)))
+			return -EFAULT;
+		if (v.voice >= 18)
+			return -EINVAL;
+		regb = op_offset[v.voice];
+		io = s->sbbase + ((v.op & 1) << 1);
+		outb(0x20 + regb, io);
+		outb(((v.am & 1) << 7) | ((v.vibrato & 1) << 6) | ((v.do_sustain & 1) << 5) | 
+		     ((v.kbd_scale & 1) << 4) | (v.harmonic & 0xf), io+1);
+		outb(0x40 + regb, io);
+		outb(((v.scale_level & 0x3) << 6) | (v.volume & 0x3f), io+1);
+		outb(0x60 + regb, io);
+		outb(((v.attack & 0xf) << 4) | (v.decay & 0xf), io+1);
+		outb(0x80 + regb, io);
+		outb(((v.sustain & 0xf) << 4) | (v.release & 0xf), io+1);
+		outb(0xe0 + regb, io);
+		outb(v.waveform & 0x7, io+1);
+		if (n.voice >= 9) {
+			regb = n.voice - 9;
+			io = s->sbbase+2;
+		} else {
+			regb = n.voice;
+			io = s->sbbase;
+		}
+		outb(0xc0 + regb, io);
+		outb(((v.right & 1) << 5) | ((v.left & 1) << 4) | ((v.feedback & 7) << 1) |
+		     (v.connection & 1), io+1);
+		return 0;
+		
+	case FM_IOCTL_SET_PARAMS:
+		if (copy_from_user(&p, (void *)arg, sizeof(p)))
+			return -EFAULT;
+		outb(0x08, s->sbbase);
+		outb((p.kbd_split & 1) << 6, s->sbbase+1);
+		outb(0xbd, s->sbbase);
+		outb(((p.am_depth & 1) << 7) | ((p.vib_depth & 1) << 6) | ((p.rhythm & 1) << 5) | ((p.bass & 1) << 4) |
+		     ((p.snare & 1) << 3) | ((p.tomtom & 1) << 2) | ((p.cymbal & 1) << 1) | (p.hihat & 1), s->sbbase+1);
+		return 0;
+
+	case FM_IOCTL_SET_OPL:
+		outb(4, s->sbbase+2);
+		outb(arg, s->sbbase+3);
+		return 0;
+
+	case FM_IOCTL_SET_MODE:
+		outb(5, s->sbbase+2);
+		outb(arg & 1, s->sbbase+3);
+		return 0;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int solo1_dmfm_open(struct inode *inode, struct file *file)
+{
+	int minor = MINOR(inode->i_rdev);
+	struct solo1_state *s = devs;
+
+	while (s && s->dev_dmfm != minor)
+		s = s->next;
+	if (!s)
+		return -ENODEV;
+       	VALIDATE_STATE(s);
+	file->private_data = s;
+	/* wait for device to become free */
+	down(&s->open_sem);
+	while (s->open_mode & FMODE_DMFM) {
+		if (file->f_flags & O_NONBLOCK) {
+			up(&s->open_sem);
+			return -EBUSY;
+		}
+		up(&s->open_sem);
+		interruptible_sleep_on(&s->open_wait);
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+		down(&s->open_sem);
+	}
+	/* init the stuff */
+	outb(1, s->sbbase);
+	outb(0x20, s->sbbase+1); /* enable waveforms */
+	outb(4, s->sbbase+2);
+	outb(0, s->sbbase+3);  /* no 4op enabled */
+	outb(5, s->sbbase+2);
+	outb(1, s->sbbase+3);  /* enable OPL3 */
+	s->open_mode |= FMODE_DMFM;
+	up(&s->open_sem);
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int solo1_dmfm_release(struct inode *inode, struct file *file)
+{
+	struct solo1_state *s = (struct solo1_state *)file->private_data;
+	unsigned int regb;
+
+	VALIDATE_STATE(s);
+	down(&s->open_sem);
+	s->open_mode &= ~FMODE_DMFM;
+	for (regb = 0xb0; regb < 0xb9; regb++) {
+		outb(regb, s->sbbase);
+		outb(0, s->sbbase+1);
+		outb(regb, s->sbbase+2);
+		outb(0, s->sbbase+3);
+	}
+	up(&s->open_sem);
+	wake_up(&s->open_wait);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static /*const*/ struct file_operations solo1_dmfm_fops = {
+	&solo1_llseek,
+	NULL,  /* read */
+	NULL,  /* write */
+	NULL,  /* readdir */
+	NULL,  /* poll */
+	&solo1_dmfm_ioctl,
+	NULL,  /* mmap */
+	&solo1_dmfm_open,
+	NULL,  /* flush */
+	&solo1_dmfm_release,
+	NULL,  /* fsync */
+	NULL,  /* fasync */
+	NULL,  /* check_media_change */
+	NULL,  /* revalidate */
+	NULL,  /* lock */
+};
+
+/* --------------------------------------------------------------------- */
+
+/* maximum number of devices */
+#define NR_DEVICE 5
+
+/* --------------------------------------------------------------------- */
+
+static struct initvol {
+	int mixch;
+	int vol;
+} initvol[] __initdata = {
+	{ SOUND_MIXER_WRITE_VOLUME, 0x4040 },
+	{ SOUND_MIXER_WRITE_PCM, 0x4040 },
+	{ SOUND_MIXER_WRITE_SYNTH, 0x4040 },
+	{ SOUND_MIXER_WRITE_CD, 0x4040 },
+	{ SOUND_MIXER_WRITE_LINE, 0x4040 },
+	{ SOUND_MIXER_WRITE_LINE1, 0x4040 },
+	{ SOUND_MIXER_WRITE_LINE2, 0x4040 },
+	{ SOUND_MIXER_WRITE_RECLEV, 0x4040 },
+	{ SOUND_MIXER_WRITE_SPEAKER, 0x4040 },
+	{ SOUND_MIXER_WRITE_MIC, 0x4040 }
+};
+
+#define RSRCISIOREGION(dev,num) ((dev)->resource[(num)].start != 0 && \
+				 ((dev)->resource[(num)].flags & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO)
+#define RSRCADDRESS(dev,num) ((dev)->resource[(num)].start)
+
+
+static int __init init_solo1(void)
+{
+	struct solo1_state *s;
+	struct pci_dev *pcidev = NULL;
+	mm_segment_t fs;
+	int i, val, index = 0;
+
+	if (!pci_present())   /* No PCI bus in this machine! */
+		return -ENODEV;
+	printk(KERN_INFO "solo1: version v0.7 time " __TIME__ " " __DATE__ "\n");
+	while (index < NR_DEVICE && 
+	       (pcidev = pci_find_device(PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_SOLO1, pcidev))) {
+		if (!RSRCISIOREGION(pcidev, 0) ||
+		    !RSRCISIOREGION(pcidev, 1) ||
+		    !RSRCISIOREGION(pcidev, 2) ||
+		    !RSRCISIOREGION(pcidev, 3))
+			continue;
+		if (pcidev->irq == 0)
+			continue;
+		if (!(s = kmalloc(sizeof(struct solo1_state), GFP_KERNEL))) {
+			printk(KERN_WARNING "solo1: out of memory\n");
+			continue;
+		}
+		memset(s, 0, sizeof(struct solo1_state));
+		init_waitqueue_head(&s->dma_adc.wait);
+		init_waitqueue_head(&s->dma_dac.wait);
+		init_waitqueue_head(&s->open_wait);
+		init_waitqueue_head(&s->midi.iwait);
+		init_waitqueue_head(&s->midi.owait);
+		init_MUTEX(&s->open_sem);
+		spin_lock_init(&s->lock);
+		s->magic = SOLO1_MAGIC;
+		s->pcidev = pcidev;
+		s->iobase = RSRCADDRESS(pcidev, 0);
+		s->sbbase = RSRCADDRESS(pcidev, 1);
+		s->vcbase = RSRCADDRESS(pcidev, 2);
+		s->ddmabase = s->vcbase + DDMABASE_OFFSET;
+		s->mpubase = RSRCADDRESS(pcidev, 3);
+		s->gpbase = RSRCADDRESS(pcidev, 4);
+		s->irq = pcidev->irq;
+		if (check_region(s->iobase, IOBASE_EXTENT) ||
+		    check_region(s->sbbase+4, SBBASE_EXTENT-4) ||
+		    check_region(s->ddmabase, DDMABASE_EXTENT) ||
+		    check_region(s->mpubase, MPUBASE_EXTENT)) {
+			printk(KERN_ERR "solo1: io ports in use\n");
+			goto err_region;
+		}
+		request_region(s->iobase, IOBASE_EXTENT, "ESS Solo1");
+		request_region(s->sbbase+4, SBBASE_EXTENT-4, "ESS Solo1");  /* allow OPL3 synth module */
+		request_region(s->ddmabase, DDMABASE_EXTENT, "ESS Solo1");
+		request_region(s->mpubase, MPUBASE_EXTENT, "ESS Solo1");
+		if (request_irq(s->irq, solo1_interrupt, SA_SHIRQ, "ESS Solo1", s)) {
+			printk(KERN_ERR "solo1: irq %u in use\n", s->irq);
+			goto err_irq;
+		}
+		/* initialize DDMA base address */
+		printk(KERN_DEBUG "solo1: ddma base address: 0x%lx\n", s->ddmabase);
+		pci_write_config_word(pcidev, 0x60, (s->ddmabase & (~0xf)) | 1);
+		/* set DMA policy to DDMA, IRQ emulation off (CLKRUN disabled for now) */
+		pci_write_config_dword(pcidev, 0x50, 0);
+		/* disable legacy audio address decode */
+		pci_write_config_word(pcidev, 0x40, 0x907f);
+
+		printk(KERN_INFO "solo1: joystick port at %#lx\n", s->gpbase+1);
+
+		/* register devices */
+		if ((s->dev_audio = register_sound_dsp(&solo1_audio_fops, -1)) < 0)
+			goto err_dev1;
+		if ((s->dev_mixer = register_sound_mixer(&solo1_mixer_fops, -1)) < 0)
+			goto err_dev2;
+		if ((s->dev_midi = register_sound_midi(&solo1_midi_fops, -1)) < 0)
+			goto err_dev3;
+		if ((s->dev_dmfm = register_sound_special(&solo1_dmfm_fops, 15 /* ?? */)) < 0)
+			goto err_dev4;
+		/* initialize the chips */
+		outb(0xb0, s->iobase+7); /* enable A1, A2, MPU irq's */
+
+		/* initialize mixer regs */
+		write_mixer(s, 0x7f, 0); /* disable music digital recording */
+		write_mixer(s, 0x7d, 0x0c); /* enable mic preamp, MONO_OUT is 2nd DAC right channel */
+		write_mixer(s, 0x64, 0x45); /* volume control */
+		write_mixer(s, 0x48, 0x10); /* enable music DAC/ES6xx interface */
+		write_mixer(s, 0x50, 0);  /* disable spatializer */
+		write_mixer(s, 0x52, 0);
+		write_mixer(s, 0x14, 0);  /* DAC1 minimum volume */
+		write_mixer(s, 0x71, 0x20); /* enable new 0xA1 reg format */
+		outb(0, s->ddmabase+0xd); /* DMA master clear */
+		outb(1, s->ddmabase+0xf); /* mask channel */
+		/*outb(0, s->ddmabase+0x8);*/ /* enable controller (enable is low active!!) */
+
+		pci_set_master(pcidev);  /* enable bus mastering */
+		
+		fs = get_fs();
+		set_fs(KERNEL_DS);
+		val = SOUND_MASK_LINE;
+		mixer_ioctl(s, SOUND_MIXER_WRITE_RECSRC, (unsigned long)&val);
+		for (i = 0; i < sizeof(initvol)/sizeof(initvol[0]); i++) {
+			val = initvol[i].vol;
+			mixer_ioctl(s, initvol[i].mixch, (unsigned long)&val);
+		}
+		val = 1; /* enable mic preamp */
+		mixer_ioctl(s, SOUND_MIXER_PRIVATE1, (unsigned long)&val);
+		set_fs(fs);
+		/* queue it for later freeing */
+		s->next = devs;
+		devs = s;
+		index++;
+		continue;
+
+	err_dev4:
+		unregister_sound_dsp(s->dev_midi);
+	err_dev3:
+		unregister_sound_mixer(s->dev_mixer);
+	err_dev2:
+		unregister_sound_dsp(s->dev_audio);
+	err_dev1:
+		printk(KERN_ERR "solo1: cannot register misc device\n");
+		free_irq(s->irq, s);
+	err_irq:
+		release_region(s->iobase, IOBASE_EXTENT);
+		release_region(s->sbbase+4, SBBASE_EXTENT-4);
+		release_region(s->ddmabase, DDMABASE_EXTENT);
+		release_region(s->mpubase, MPUBASE_EXTENT);
+	err_region:
+		kfree_s(s, sizeof(struct solo1_state));
+	}
+	if (!devs)
+		return -ENODEV;
+	return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
+MODULE_DESCRIPTION("ESS Solo1 Driver");
+
+static void __exit cleanup_solo1(void)
+{
+	struct solo1_state *s;
+
+	while ((s = devs)) {
+		devs = devs->next;
+		/* stop DMA controller */
+		outb(0, s->iobase+6);
+		outb(0, s->ddmabase+0xd); /* DMA master clear */
+		outb(3, s->sbbase+6); /* reset sequencer and FIFO */
+		synchronize_irq();
+		pci_write_config_word(s->pcidev, 0x60, 0); /* turn off DDMA controller address space */
+		free_irq(s->irq, s);
+		release_region(s->iobase, IOBASE_EXTENT);
+		release_region(s->sbbase+4, SBBASE_EXTENT-4);
+		release_region(s->ddmabase, DDMABASE_EXTENT);
+		release_region(s->mpubase, MPUBASE_EXTENT);
+		unregister_sound_dsp(s->dev_audio);
+		unregister_sound_mixer(s->dev_mixer);
+		unregister_sound_midi(s->dev_midi);
+		unregister_sound_special(s->dev_dmfm);
+		kfree_s(s, sizeof(struct solo1_state));
+	}
+	printk(KERN_INFO "solo1: unloading\n");
+}
+
+/* --------------------------------------------------------------------- */
+
+module_init(init_solo1);
+module_exit(cleanup_solo1);
+