patch-2.2.0-pre6 linux/drivers/sound/waveartist.c

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diff -u --recursive --new-file v2.2.0-pre5/linux/drivers/sound/waveartist.c linux/drivers/sound/waveartist.c
@@ -0,0 +1,1956 @@
+/*
+ * drivers/sound/waveartist.c
+ *
+ * The low level driver for the RWA010 Rockwell Wave Artist
+ * codec chip used in the Corel Computer NetWinder.
+ *
+ * Cleaned up and integrated into 2.1 by Russell King (rmk@arm.linux.org.uk)
+ */
+
+/*
+ * Copyright (C) by Corel Computer 1998
+ *
+ * RWA010 specs received under NDA from Rockwell
+ *
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
+ * Version 2 (June 1991). See the "COPYING" file distributed with this software
+ * for more info.
+ */
+
+/* Debugging */
+#define DEBUG_CMD	1
+#define DEBUG_OUT	2
+#define DEBUG_IN	4
+#define DEBUG_INTR	8
+#define DEBUG_MIXER	16
+#define DEBUG_TRIGGER	32
+
+#define debug_flg (0)
+
+#define DEB(x)
+#define DDB(x)
+#define DEB1(x)
+
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/smp.h>
+
+#include <asm/hardware.h>
+
+#include "soundmodule.h"
+#include "sound_config.h"
+#include "waveartist.h"
+
+#define	VNC_TIMER_PERIOD (HZ/4)	//check slider 4 times/sec
+
+#define	MIXER_PRIVATE3_RESET	0x53570000
+#define	MIXER_PRIVATE3_READ	0x53570001
+#define	MIXER_PRIVATE3_WRITE	0x53570002
+
+#define	VNC_INTERNAL_SPKR	0x01	//the sw mute on/off control bit
+#define	VNC_INTERNAL_MIC	0x10	//the hw internal/handset mic bit
+
+/* Use RECSRC = speaker to mark the internal microphone
+ *
+ * Some cheating involved here: there is no way to relay
+ * to the system, which microphone in in use
+ * (left = handset, or right = internal)
+ *
+ * So while I do not flag SPEAKER in the Recording Devices
+ * Mask, when on internal
+ *
+ * mike - I set the speaker bit hi. Some mixers can be
+ * confused a bit...
+ */
+
+#define POSSIBLE_RECORDING_DEVICES	(SOUND_MASK_LINE |\
+					 SOUND_MASK_MIC |\
+					 SOUND_MASK_LINE1)	//Line1 = analog phone
+
+#define SUPPORTED_MIXER_DEVICES		(SOUND_MASK_SYNTH |\
+					 SOUND_MASK_PCM |\
+					 SOUND_MASK_LINE |\
+					 SOUND_MASK_MIC | \
+					 SOUND_MASK_LINE1 |\
+					 SOUND_MASK_RECLEV |\
+					 SOUND_MASK_VOLUME)
+
+static unsigned short levels[SOUND_MIXER_NRDEVICES] = {
+	0x5555,		/* Master Volume	 */
+	0x0000,		/* Bass			 */
+	0x0000,		/* Treble		 */
+	0x5555,		/* Synth (FM)		 */
+	0x4b4b,		/* PCM			 */
+	0x0000,		/* PC Speaker		 */
+	0x0000,		/* Ext Line		 */
+	0x0000,		/* Mic			 */
+	0x0000,		/* CD			 */
+	0x0000,		/* Recording monitor	 */
+	0x0000,		/* SB PCM (ALT PCM)	 */
+	0x0000,		/* Recording level	 */
+	0x0000,		/* Input gain		 */
+	0x0000,		/* Output gain		 */
+	0x0000,		/* Line1 (Aux1)		 */
+	0x0000,		/* Line2 (Aux2)		 */
+	0x0000,		/* Line3 (Aux3)		 */
+	0x0000,		/* Digital1		 */
+	0x0000,		/* Digital2		 */
+	0x0000,		/* Digital3		 */
+	0x0000,		/* Phone In		 */
+	0x0000,		/* Phone Out		 */
+	0x0000,		/* Video		 */
+	0x0000,		/* Radio		 */
+	0x0000		/* Monitor		 */
+};
+
+typedef struct {
+	struct address_info  hw;	/* hardware */
+	char		*chip_name;
+
+	int		xfer_count;
+	int		audio_mode;
+	int		open_mode;
+	int		audio_flags;
+	int		record_dev;
+	int		playback_dev;
+	int		dev_no;
+
+	/* Mixer parameters */
+	unsigned short	*levels;
+	int		handset_state;
+	signed int	slider_vol;	   /* hardware slider volume */
+	int		recmask;	   /* currently enabled recording device! */
+	int             supported_devices; /* SUPPORTED_MIXER_DEVICES */
+	int             rec_devices;	   /* POSSIBLE_RECORDING_DEVICES */
+	int		handset_mute_sw	:1;/* 1 - handset controlled in sw */
+	int		use_slider	:1;/* use slider setting for o/p vol */
+	int		mute_state	:1;
+} wavnc_info;
+
+typedef struct wavnc_port_info {
+	int		open_mode;
+	int		speed;
+	int		channels;
+	int		audio_format;
+} wavnc_port_info;
+
+static int		 nr_waveartist_devs;
+static wavnc_info	 adev_info[MAX_AUDIO_DEV];
+static struct timer_list vnc_timer;
+
+
+static inline void
+waveartist_set_ctlr(struct address_info *hw, unsigned char clear, unsigned char set)
+{
+	unsigned int ctlr_port = hw->io_base + CTLR;
+
+	clear = ~clear & inb(ctlr_port);
+
+	outb(clear | set, ctlr_port);
+}
+
+/* Toggle IRQ acknowledge line
+ */
+static inline void
+waveartist_iack(wavnc_info *devc)
+{
+	unsigned int ctlr_port = devc->hw.io_base + CTLR;
+	int old_ctlr;
+
+	old_ctlr = inb(ctlr_port) & ~IRQ_ACK;
+
+	outb(old_ctlr | IRQ_ACK, ctlr_port);
+	outb(old_ctlr, ctlr_port);
+}
+
+static inline int
+waveartist_sleep(int timeout_ms)
+{
+	unsigned int timeout = timeout_ms * 10 * HZ / 100;
+
+	do {
+		current->state = TASK_INTERRUPTIBLE;
+		timeout = schedule_timeout(timeout);
+	} while (timeout);
+
+	return 0;
+}
+
+static int
+waveartist_reset(wavnc_info *devc)
+{
+	struct address_info *hw = &devc->hw;
+	unsigned int timeout, res = -1;
+
+	waveartist_set_ctlr(hw, -1, RESET);
+	waveartist_sleep(2);
+	waveartist_set_ctlr(hw, RESET, 0);
+
+	timeout = 500;
+	do {
+		mdelay(2);
+
+		if (inb(hw->io_base + STATR) & CMD_RF) {
+			res = inw(hw->io_base + CMDR);
+			if (res == 0x55aa)
+				break;
+		}
+	} while (timeout--);
+
+	if (timeout == 0) {
+		printk("WaveArtist: reset timeout ");
+		if (res != (unsigned int)-1)
+			printk("(res=%04X)", res);
+		printk("\n");
+		return 1;
+	}
+	return 0;
+}
+
+static int
+waveartist_cmd(wavnc_info *devc,
+		int nr_cmd, unsigned int *cmd,
+		int nr_resp, unsigned int *resp)
+{
+	unsigned int io_base = devc->hw.io_base;
+	unsigned int timed_out = 0;
+	unsigned int i;
+
+	if (debug_flg & DEBUG_CMD) {
+		printk("waveartist_cmd: cmd=");
+
+		for (i = 0; i < nr_cmd; i++)
+			printk("%04X ", cmd[i]);
+
+		printk("\n");
+	}
+
+	if (inb(io_base + STATR) & CMD_RF) {
+		int old_data;
+
+		/* flush the port
+		 */
+
+		old_data = inw(io_base + CMDR);
+
+		if (debug_flg & DEBUG_CMD)
+			printk("flushed %04X...", old_data);
+
+		udelay(10);
+	}
+
+	for (i = 0; !timed_out && i < nr_cmd; i++) {
+		int count;
+
+		for (count = 5000; count; count--)
+			if (inb(io_base + STATR) & CMD_WE)
+				break;
+
+		if (!count)
+			timed_out = 1;
+		else
+			outw(cmd[i], io_base + CMDR);
+	}
+
+	for (i = 0; !timed_out && i < nr_resp; i++) {
+		int count;
+
+		for (count = 5000; count; count--)
+			if (inb(io_base + STATR) & CMD_RF)
+				break;
+
+		if (!count)
+			timed_out = 1;
+		else
+			resp[i] = inw(io_base + CMDR);
+	}
+
+	if (debug_flg & DEBUG_CMD) {
+		if (!timed_out) {
+			printk("waveartist_cmd: resp=");
+
+			for (i = 0; i < nr_resp; i++)
+				printk("%04X ", resp[i]);
+
+			printk("\n");
+		} else
+			printk("waveartist_cmd: timed out\n");
+	}
+
+	return timed_out ? 1 : 0;
+}
+
+static inline int
+waveartist_cmd2(wavnc_info *devc, unsigned int cmd, unsigned int arg)
+{
+	unsigned int vals[2];
+
+	vals[0] = cmd;
+	vals[1] = arg;
+
+	waveartist_cmd(devc, 2, vals, 1, vals);
+
+	return 0;
+}
+
+static inline int
+waveartist_cmd3(wavnc_info *devc, unsigned int cmd,
+		unsigned int arg1, unsigned int arg2)
+{
+	unsigned int vals[3];
+
+	vals[0] = cmd;
+	vals[1] = arg1;
+	vals[2] = arg2;
+
+	return waveartist_cmd(devc, 3, vals, 0, NULL);
+}
+
+static int
+waveartist_sendcmd(struct address_info *hw, unsigned int cmd)
+{
+	int count;
+
+	if (debug_flg & DEBUG_CMD)
+		printk("waveartist_sendcmd: cmd=0x%04X...", cmd);
+
+	udelay(10);
+
+	if (inb(hw->io_base + STATR) & CMD_RF) {
+		/*
+		 * flush the port
+		 */
+		count = inw(hw->io_base + CMDR);
+
+		udelay(10);
+
+		if (debug_flg & DEBUG_CMD)
+			printk(" flushed %04X...", count);
+	}
+
+	/*
+	 * preset timeout at 5000 loops
+	 */
+	count = 5000;
+
+	while (count --)
+		if (inb(hw->io_base + STATR) & CMD_WE) {
+			/* wait till CMD_WE is high
+			 * then output the command
+			 */
+			outw(cmd, hw->io_base + CMDR);
+			break;
+		}
+
+	/* ready BEFORE timeout?
+	 */
+	if (debug_flg & DEBUG_CMD)
+		printk(" %s\n", count ? "Done OK." : "Error!");
+
+	udelay(10);
+
+	return count ? 0 : 1;
+}
+
+static int
+waveartist_getrev(struct address_info *hw, char *rev)
+{
+	int temp;
+
+	waveartist_sendcmd(hw, 0);
+	udelay(20);
+	temp = inw(hw->io_base + CMDR);
+	udelay(20);
+	inw(hw->io_base + CMDR);	// discard second word == 0
+
+	rev[0] = temp >> 8;
+	rev[1] = temp & 255;
+	rev[2] = '\0';
+
+	return temp;
+}
+
+inline void
+waveartist_mute(wavnc_info *devc, int mute)
+{
+}
+
+static void waveartist_halt_output(int dev);
+static void waveartist_halt_input(int dev);
+static void waveartist_halt(int dev);
+static void waveartist_trigger(int dev, int state);
+
+static int
+waveartist_open(int dev, int mode)
+{
+	wavnc_info	*devc;
+	wavnc_port_info	*portc;
+	unsigned long	flags;
+
+	if (dev < 0 || dev >= num_audiodevs)
+		return -ENXIO;
+
+	devc  = (wavnc_info *) audio_devs[dev]->devc;
+	portc = (wavnc_port_info *) audio_devs[dev]->portc;
+
+	save_flags(flags);
+	cli();
+	if (portc->open_mode || (devc->open_mode & mode)) {
+		restore_flags(flags);
+		return -EBUSY;
+	}
+
+	devc->audio_mode  = 0;
+	devc->open_mode  |= mode;
+	portc->open_mode  = mode;
+	waveartist_trigger(dev, 0);
+
+	if (mode & OPEN_READ)
+		devc->record_dev = dev;
+	if (mode & OPEN_WRITE)
+		devc->playback_dev = dev;
+	restore_flags(flags);
+
+	/*
+	 * Mute output until the playback really starts. This
+	 * decreases clicking (hope so).
+	 */
+	waveartist_mute(devc, 1);
+
+	return 0;
+}
+
+static void
+waveartist_close(int dev)
+{
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	wavnc_port_info	*portc = (wavnc_port_info *) audio_devs[dev]->portc;
+	unsigned long	flags;
+
+	save_flags(flags);
+	cli();
+
+	waveartist_halt(dev);
+
+	devc->audio_mode = 0;
+	devc->open_mode &= ~portc->open_mode;
+	portc->open_mode = 0;
+
+	waveartist_mute(devc, 1);
+
+	restore_flags(flags);
+}
+
+static void
+waveartist_output_block(int dev, unsigned long buf, int __count, int intrflag)
+{
+	wavnc_port_info	*portc = (wavnc_port_info *) audio_devs[dev]->portc;
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	unsigned long	flags;
+	unsigned int	count = __count; 
+
+	if (debug_flg & DEBUG_OUT)
+		printk("waveartist: output block, buf=0x%lx, count=0x%x...\n",
+			buf, count);
+	/*
+	 * 16 bit data
+	 */
+	if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE))
+		count >>= 1;
+
+	if (portc->channels > 1)
+		count >>= 1;
+
+	count -= 1;
+
+	if (devc->audio_mode & PCM_ENABLE_OUTPUT &&
+	    audio_devs[dev]->flags & DMA_AUTOMODE &&
+	    intrflag &&
+	    count == devc->xfer_count) {
+		devc->audio_mode |= PCM_ENABLE_OUTPUT;
+		return;	/*
+			 * Auto DMA mode on. No need to react
+			 */
+	}
+
+	save_flags(flags);
+	cli();
+
+	/*
+	 * set sample count
+	 */
+	waveartist_cmd2(devc, 0x0024, count);
+
+	devc->xfer_count = count;
+	devc->audio_mode |= PCM_ENABLE_OUTPUT;
+
+	restore_flags(flags);
+}
+
+static void
+waveartist_start_input(int dev, unsigned long buf, int __count, int intrflag)
+{
+	wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	unsigned long	flags;
+	unsigned int	count = __count;
+
+	if (debug_flg & DEBUG_IN)
+		printk("waveartist: start input, buf=0x%lx, count=0x%x...\n",
+			buf, count);
+
+	if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE))	/* 16 bit data */
+		count >>= 1;
+
+	if (portc->channels > 1)
+		count >>= 1;
+
+	count -= 1;
+
+	if (devc->audio_mode & PCM_ENABLE_INPUT &&
+	    audio_devs[dev]->flags & DMA_AUTOMODE &&
+	    intrflag &&
+	    count == devc->xfer_count) {
+		devc->audio_mode |= PCM_ENABLE_INPUT;
+		return;	/*
+			 * Auto DMA mode on. No need to react
+			 */
+	}
+
+	save_flags(flags);
+	cli();
+
+	/*
+	 * set sample count
+	 */
+	waveartist_cmd2(devc, 0x0014, count);
+	waveartist_mute(devc, 0);
+
+	devc->xfer_count = count;
+	devc->audio_mode |= PCM_ENABLE_INPUT;
+
+	restore_flags(flags);
+}
+
+static int
+waveartist_ioctl(int dev, unsigned int cmd, caddr_t arg)
+{
+	return -EINVAL;
+}
+
+static unsigned int
+waveartist_get_speed(wavnc_port_info *portc)
+{
+	unsigned int speed;
+
+	/*
+	 * program the speed, channels, bits
+	 */
+	if (portc->speed == 8000)
+		speed = 0x2E71;
+	else if (portc->speed == 11025)
+		speed = 0x4000;
+	else if (portc->speed == 22050)
+		speed = 0x8000;
+	else if (portc->speed == 44100)
+		speed = 0x0;
+	else {
+		/*
+		 * non-standard - just calculate
+		 */
+		speed = portc->speed << 16;
+
+		speed = (speed / 44100) & 65535;
+	}
+
+	return speed;
+}
+
+static unsigned int
+waveartist_get_bits(wavnc_port_info *portc)
+{
+	unsigned int bits;
+
+	if (portc->audio_format == AFMT_S16_LE)
+		bits = 1;
+	else if (portc->audio_format == AFMT_S8)
+		bits = 0;
+	else
+		bits = 2;	//default AFMT_U8
+
+	return bits;
+}
+
+static int
+waveartist_prepare_for_input(int dev, int bsize, int bcount)
+{
+	unsigned long	flags;
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	wavnc_port_info	*portc = (wavnc_port_info *) audio_devs[dev]->portc;
+	unsigned int	speed, bits;
+
+	if (devc->audio_mode)
+		return 0;
+
+	speed = waveartist_get_speed(portc);
+	bits  = waveartist_get_bits(portc);
+
+	save_flags(flags);
+	cli();
+
+	if (waveartist_cmd2(devc, WACMD_INPUTFORMAT, bits))
+		printk("waveartist: error setting the record format to %d\n",
+		       portc->audio_format);
+
+	if (waveartist_cmd2(devc, WACMD_INPUTCHANNELS, portc->channels))
+		printk("waveartist: error setting record to %d channels\n",
+		       portc->channels);
+
+	/*
+	 * write cmd SetSampleSpeedTimeConstant
+	 */
+	if (waveartist_cmd2(devc, WACMD_INPUTSPEED, speed))
+		printk("waveartist: error setting the record speed "
+		       "to %dHz.\n", portc->speed);
+
+	if (waveartist_cmd2(devc, WACMD_INPUTDMA, 1))
+		printk("waveartist: error setting the record data path "
+		       "to 0x%X\n", 1);
+
+	if (waveartist_cmd2(devc, WACMD_INPUTFORMAT, bits))
+		printk("waveartist: error setting the record format to %d\n",
+		       portc->audio_format);
+
+	devc->xfer_count = 0;
+	restore_flags(flags);
+	waveartist_halt_input(dev);
+
+	if (debug_flg & DEBUG_INTR) {
+		printk("WA CTLR reg: 0x%02X.\n",inb(devc->hw.io_base + CTLR));
+		printk("WA STAT reg: 0x%02X.\n",inb(devc->hw.io_base + STATR));
+		printk("WA IRQS reg: 0x%02X.\n",inb(devc->hw.io_base + IRQSTAT));
+	}
+
+	return 0;
+}
+
+static int
+waveartist_prepare_for_output(int dev, int bsize, int bcount)
+{
+	unsigned long	flags;
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	wavnc_port_info	*portc = (wavnc_port_info *) audio_devs[dev]->portc;
+	unsigned int	speed, bits;
+
+	/*
+	 * program the speed, channels, bits
+	 */
+	speed = waveartist_get_speed(portc);
+	bits  = waveartist_get_bits(portc);
+
+	save_flags(flags);
+	cli();
+
+	if (waveartist_cmd2(devc, WACMD_OUTPUTSPEED, speed) &&
+	    waveartist_cmd2(devc, WACMD_OUTPUTSPEED, speed))
+		printk("waveartist: error setting the playback speed "
+		       "to %dHz.\n", portc->speed);
+
+	if (waveartist_cmd2(devc, WACMD_OUTPUTCHANNELS, portc->channels))
+		printk("waveartist: error setting the playback to"
+		       " %d channels\n", portc->channels);
+
+	if (waveartist_cmd2(devc, WACMD_OUTPUTDMA, 0))
+		printk("waveartist: error setting the playback data path "
+		       "to 0x%X\n", 0);
+
+	if (waveartist_cmd2(devc, WACMD_OUTPUTFORMAT, bits))
+		printk("waveartist: error setting the playback format to %d\n",
+		       portc->audio_format);
+
+	devc->xfer_count = 0;
+	restore_flags(flags);
+	waveartist_halt_output(dev);
+
+	if (debug_flg & DEBUG_INTR) {
+		printk("WA CTLR reg: 0x%02X.\n",inb(devc->hw.io_base + CTLR));
+		printk("WA STAT reg: 0x%02X.\n",inb(devc->hw.io_base + STATR));
+		printk("WA IRQS reg: 0x%02X.\n",inb(devc->hw.io_base + IRQSTAT));
+	}
+
+	return 0;
+}
+
+static void
+waveartist_halt(int dev)
+{
+	wavnc_port_info	*portc = (wavnc_port_info *) audio_devs[dev]->portc;
+	wavnc_info	*devc;
+
+
+	if (portc->open_mode & OPEN_WRITE)
+		waveartist_halt_output(dev);
+
+	if (portc->open_mode & OPEN_READ)
+		waveartist_halt_input(dev);
+
+	devc = (wavnc_info *) audio_devs[dev]->devc;
+	devc->audio_mode = 0;
+}
+
+static void
+waveartist_halt_input(int dev)
+{
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	unsigned long	flags;
+
+	save_flags(flags);
+	cli();
+
+	waveartist_mute(devc, 1);
+
+//RMK	disable_dma(audio_devs[dev]->dmap_in->dma);
+
+	/*
+	 * Stop capture
+	 */
+	waveartist_sendcmd(&devc->hw, 0x17);
+
+//RMK	enable_dma(audio_devs[dev]->dmap_in->dma);
+	devc->audio_mode &= ~PCM_ENABLE_INPUT;
+
+	/*
+	 * Clear interrupt by toggling
+	 * the IRQ_ACK bit in CTRL
+	 */
+	if (inb(devc->hw.io_base + STATR) & IRQ_REQ)
+		waveartist_iack(devc);
+
+//	devc->audio_mode &= ~PCM_ENABLE_INPUT;
+
+	restore_flags(flags);
+}
+
+static void
+waveartist_halt_output(int dev)
+{
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	unsigned long	flags;
+
+	save_flags(flags);
+	cli();
+
+	waveartist_mute(devc, 1);
+
+//RMK	disable_dma(audio_devs[dev]->dmap_out->dma);
+
+	waveartist_sendcmd(&devc->hw, 0x27);
+
+//RMK	enable_dma(audio_devs[dev]->dmap_out->dma);
+
+	devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
+
+	/*
+	 * Clear interrupt by toggling
+	 * the IRQ_ACK bit in CTRL
+	 */
+	if (inb(devc->hw.io_base + STATR) & IRQ_REQ)
+		waveartist_iack(devc);
+
+//	devc->audio_mode &= ~PCM_ENABLE_OUTPUT;
+
+	restore_flags(flags);
+}
+
+static void
+waveartist_trigger(int dev, int state)
+{
+	wavnc_info	*devc = (wavnc_info *) audio_devs[dev]->devc;
+	wavnc_port_info	*portc = (wavnc_port_info *) audio_devs[dev]->portc;
+	unsigned long	flags;
+
+	if (debug_flg & DEBUG_TRIGGER) {
+		printk("wavnc: audio trigger ");
+		if (state & PCM_ENABLE_INPUT)
+			printk("in ");
+		if (state & PCM_ENABLE_OUTPUT)
+			printk("out");
+		printk("\n");
+	}
+
+	save_flags(flags);
+	cli();
+
+	state &= devc->audio_mode;
+
+	if (portc->open_mode & OPEN_READ &&
+	    state & PCM_ENABLE_INPUT)
+		/*
+		 * enable ADC Data Transfer to PC
+		 */
+		waveartist_sendcmd(&devc->hw, 0x15);
+
+	if (portc->open_mode & OPEN_WRITE &&
+	    state & PCM_ENABLE_OUTPUT)
+		/*
+		 * enable DAC data transfer from PC
+		 */
+		waveartist_sendcmd(&devc->hw, 0x25);
+
+	waveartist_mute(devc, 0);
+
+	restore_flags(flags);
+}
+
+static int
+waveartist_set_speed(int dev, int arg)
+{
+	wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
+
+	if (arg <= 0)
+		return portc->speed;
+
+	if (arg < 5000)
+		arg = 5000;
+	if (arg > 44100)
+		arg = 44100;
+
+	portc->speed = arg;
+	return portc->speed;
+
+}
+
+static short
+waveartist_set_channels(int dev, short arg)
+{
+	wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
+
+	if (arg != 1 && arg != 2)
+		return portc->channels;
+
+	portc->channels = arg;
+	return arg;
+}
+
+static unsigned int
+waveartist_set_bits(int dev, unsigned int arg)
+{
+	wavnc_port_info *portc = (wavnc_port_info *) audio_devs[dev]->portc;
+
+	if (arg == 0)
+		return portc->audio_format;
+
+	if ((arg != AFMT_U8) && (arg != AFMT_S16_LE) && (arg != AFMT_S8))
+		arg = AFMT_U8;
+
+	portc->audio_format = arg;
+
+	return arg;
+}
+
+static struct audio_driver waveartist_audio_driver = {
+	waveartist_open,
+	waveartist_close,
+	waveartist_output_block,
+	waveartist_start_input,
+	waveartist_ioctl,
+	waveartist_prepare_for_input,
+	waveartist_prepare_for_output,
+	waveartist_halt,
+	NULL,
+	NULL,
+	waveartist_halt_input,
+	waveartist_halt_output,
+	waveartist_trigger,
+	waveartist_set_speed,
+	waveartist_set_bits,
+	waveartist_set_channels
+};
+
+
+static void
+waveartist_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+	wavnc_info *devc = (wavnc_info *)dev_id;
+	int	   irqstatus, status;
+
+	irqstatus = inb(devc->hw.io_base + IRQSTAT);
+	status    = inb(devc->hw.io_base + STATR);
+
+	if (debug_flg & DEBUG_INTR)
+		printk("waveartist_intr: stat=%02x, irqstat=%02x\n",
+		       status, irqstatus);
+
+	if (status & IRQ_REQ)	/* Clear interrupt */
+		waveartist_iack(devc);
+	else
+		printk("waveartist: unexpected interrupt\n");
+
+#ifdef CONFIG_AUDIO
+	if (irqstatus & 0x01) {
+		int temp = 1;
+
+		/* PCM buffer done
+		 */
+		if ((status & DMA0) && (devc->audio_mode & PCM_ENABLE_OUTPUT)) {
+			DMAbuf_outputintr(devc->playback_dev, 1);
+			temp = 0;
+		}
+		if ((status & DMA1) && (devc->audio_mode & PCM_ENABLE_INPUT)) {
+			DMAbuf_inputintr(devc->record_dev);
+			temp = 0;
+		}
+		if (temp)	//default:
+			printk("WaveArtist: Unknown interrupt\n");
+	}
+#endif
+	if (irqstatus & 0x2)
+		// We do not use SB mode natively...
+		printk("WaveArtist: Unexpected SB interrupt...\n");
+}
+
+/* -------------------------------------------------------------------------
+ * Mixer stuff
+ */
+static void
+waveartist_mixer_update(wavnc_info *devc, int whichDev)
+{
+	unsigned int mask, reg_l, reg_r;
+	unsigned int lev_left, lev_right;
+	unsigned int vals[3];
+
+	lev_left  = devc->levels[whichDev] & 0xff;
+	lev_right = devc->levels[whichDev] >> 8;
+
+#define SCALE(lev,max)	((lev) * (max) / 100)
+
+	switch(whichDev) {
+	case SOUND_MIXER_VOLUME:
+		mask  = 0x000e;
+		reg_l = 0x200;
+		reg_r = 0x600;
+		lev_left  = SCALE(lev_left,  7) << 1;
+		lev_right = SCALE(lev_right, 7) << 1;
+		break;
+
+	case SOUND_MIXER_LINE:
+		mask  = 0x07c0;
+		reg_l = 0x000;
+		reg_r = 0x400;
+		lev_left  = SCALE(lev_left,  31) << 6;
+		lev_right = SCALE(lev_right, 31) << 6;
+		break;
+
+	case SOUND_MIXER_MIC:
+		mask  = 0x0030;
+		reg_l = 0x200;
+		reg_r = 0x600;
+		lev_left  = SCALE(lev_left,  3) << 4;
+		lev_right = SCALE(lev_right, 3) << 4;
+		break;
+
+	case SOUND_MIXER_RECLEV:
+		mask  = 0x000f;
+		reg_l = 0x300;
+		reg_r = 0x700;
+		lev_left  = SCALE(lev_left,  10);
+		lev_right = SCALE(lev_right, 10);
+		break;
+
+	case SOUND_MIXER_LINE1:
+		mask  = 0x003e;
+		reg_l = 0x000;
+		reg_r = 0x400;
+		lev_left  = SCALE(lev_left,  31) << 1;
+		lev_right = SCALE(lev_right, 31) << 1;
+		break;
+
+	case SOUND_MIXER_PCM:
+		waveartist_cmd3(devc, 0x0031, SCALE(lev_left,  32767),
+				SCALE(lev_right, 32767));
+		return;
+
+	case SOUND_MIXER_SYNTH:
+		waveartist_cmd3(devc, 0x0131, SCALE(lev_left,  32767),
+				SCALE(lev_right, 32767));
+		return;
+
+	default:
+		return;
+	}
+
+	/* read left setting */
+	vals[0] = reg_l + 0x30;
+	waveartist_cmd(devc, 1, vals, 1, vals + 1);
+
+	/* read right setting */
+	vals[0] = reg_r + 0x30;
+	waveartist_cmd(devc, 1, vals, 1, vals + 2);
+
+	vals[1] = (vals[1] & ~mask) | (lev_left  & mask);
+	vals[2] = (vals[2] & ~mask) | (lev_right & mask);
+
+	/* write left,right back */
+	vals[0] = 0x32;
+	waveartist_cmd(devc, 3, vals, 0, NULL);
+}
+
+static void
+waveartist_select_input(wavnc_info *devc, unsigned int input)
+{
+	unsigned int vals[3];
+#if 1
+	/* New mixer programming - switch recording source
+	 * using R/L_ADC_Mux_Select.  We are playing with
+	 * left/right mux bit fields in reg 9.
+	 *
+	 * We can not switch Mux_Select while recording, so
+	 * for microphones, enable both left and right and
+	 * play with levels only!
+	 *
+	 * Unfortunately, we need to select the src of mono
+	 * recording (left or right) before starting the
+	 * recording - so can not dynamically switch between
+	 * handset amd internal microphones...
+	 */
+
+	/*
+	 * Get reg 9
+	 */
+	vals[0] = 0x0830;
+	waveartist_cmd(devc, 1, vals, 1, vals + 1);
+
+	/*
+	 * Get reg 10, only so that we can write it back.
+	 */
+	vals[0] = 0x0930;
+	waveartist_cmd(devc, 1, vals, 1, vals + 2);
+
+	if (debug_flg & DEBUG_MIXER)
+		printk("RECSRC: old left: 0x%04X, old right: 0x%04X.\n",
+			vals[1] & 0x07, (vals[1] >> 3) & 0x07);
+
+	vals[1] &= ~0x03F;	//kill current left/right mux input select
+
+	switch (input) {
+		/*
+		 * Handset or internal MIC
+		 */
+	case SOUND_MASK_MIC:
+		/*
+		 * handset not plugged in?
+		 */
+		if (devc->handset_state & VNC_INTERNAL_MIC) {
+			/*
+			 * set mono recording from right mic
+			 */
+			waveartist_sendcmd(&devc->hw, 0x0134);
+#if 0
+			/*
+			 * right=mic, left=none
+			 */
+			vals[1] |= 0x0028;
+			/*
+			 * pretend int mic
+			 */
+			devc->rec_devices |= SOUND_MASK_SPEAKER;
+#endif
+		} else {
+			/*
+			 * set mono rec from left mic
+			 */
+			waveartist_sendcmd(&devc->hw, 0x0034);
+#if 0
+			/*
+			 * right=none, left=mic
+			 */
+			vals[1] |= 0x0005;
+			/*
+			 * show no int mic
+			 */
+			devc->rec_devices &= ~SOUND_MASK_SPEAKER;
+#endif
+		}
+		/*
+		 * right=mic, left=mic
+		 */
+		vals[1] |= 0x002D;
+		break;
+
+	case SOUND_MASK_LINE1:
+		/*
+		 * set mono rec from left aux1
+		 */
+		waveartist_sendcmd(&devc->hw, 0x0034);
+		/*
+		 * right=none, left=Aux1;
+		 */
+		vals[1] |= 0x0004;
+		break;
+
+	case SOUND_MASK_LINE:
+		/*
+		 * set mono rec from left (default)
+		 */
+		waveartist_sendcmd(&devc->hw, 0x0034);
+		/*
+		 * right=Line, left=Line;
+		 */
+		vals[1] |= 0x0012;
+		break;
+	}
+
+	if (debug_flg & DEBUG_MIXER)
+		printk("RECSRC %d: left=0x%04X, right=0x%04X.\n", input,
+			vals[1] & 0x07, (vals[1] >> 3) & 0x07);
+
+#else
+	/* This part is good, if input connected to
+	 * a mixer, so can be used for record-only modes...
+	 */
+
+	/*
+	 * get reg 4
+	 */
+	vals[0] = 0x0330;
+	waveartist_cmd(devc, 1, vals, 1, vals + 1);
+
+	/*
+	 * get reg 8
+	 */
+	vals[0] = 0x0730;
+	waveartist_cmd(devc, 1, vals, 1, vals + 2);
+
+	if (debug_flg & DEBUG_MIXER)
+		printk("RECSRC: old left: 0x%04X, old right: 0x%04X.\n",
+			vals[1], vals[2]);
+
+	/*
+	 * kill current left/right mux input select
+	 */
+	vals[1] &= ~0x07F8;
+	vals[2] &= ~0x07F8;
+
+	switch (input) {
+		/*
+		 * handset or internal mic
+		 */
+	case SOUND_MASK_MIC:
+		/*
+		 * handset not plugged in?
+		 */
+		if (devc->handset_state & VNC_INTERNAL_MIC) {
+			/*
+			 * set mono recording from right mic
+			 */
+			waveartist_sendcmd(&devc->hw, 0x0134);
+			/*
+			 * left = none, right = mic, RX filter gain
+			 */
+			vals[1] |= 0x0C00;
+			vals[2] |= 0x0C88;
+			/*
+			 * pretend int mic
+			 */
+			devc->rec_devices |= SOUND_MASK_SPEAKER;
+		} else {
+			/*
+			 * set mono rec from left mic
+			 */
+			waveartist_sendcmd(&devc->hw, 0x0034);
+			/*
+			 * left = mic, RX filter gain, right = none;
+			 */
+			vals[1] |= 0x0C88;
+			vals[2] |= 0x0C00;
+			/*
+			 * show no int mic
+			 */
+			devc->rec_devices &= ~SOUND_MASK_SPEAKER;
+		}
+		break;
+
+	case SOUND_MASK_LINE1:
+		/*
+		 * set mono rec from left aux1
+		 */
+		waveartist_sendcmd(&devc->hw, 0x0034);
+		/*
+		 * left = Aux1, right = none
+		 */
+		vals[1] |= 0x0C40;
+		vals[2] |= 0x0C00;
+		break;
+	
+	case SOUND_MASK_LINE:
+		/*
+		 * left = Line, right = Line
+		 */
+		vals[1] |= 0x0C10;
+		vals[2] |= 0x0C10;
+		break;
+	}
+
+	if (debug_flg & DEBUG_MIXER)
+		printk("RECSRC %d: left(4) 0x%04X, right(8) 0x%04X.\n",
+			level, vals[1], vals[2]);
+#endif
+	/*
+	 * and finally - write the reg pair back....
+	 */
+	vals[0] = 0x32;
+
+	waveartist_cmd(devc, 3, vals, 0, NULL);
+}
+
+static int
+waveartist_mixer_set(wavnc_info *devc, int whichDev, unsigned int level)
+{
+	unsigned int lev_left  = level & 0x007f;
+	unsigned int lev_right = (level & 0x7f00) >> 8;
+
+	int left, right, devmask, changed, i;
+
+	left = level & 0x7f;
+	right = (level & 0x7f00) >> 8;
+
+	if (debug_flg & DEBUG_MIXER)
+		printk("wa_mixer_set(dev=%d, level=%X)\n",
+			whichDev, level);
+
+	switch (whichDev) {
+	/* Master volume (0-7)
+	 * We have 3 bits on the Left/Right Mixer Gain,
+	 * bits 3,2,1 on 3 and 7
+	 */
+	case SOUND_MIXER_VOLUME:
+		devc->levels[whichDev] = lev_left | lev_right << 8;
+		waveartist_mixer_update(devc, whichDev);
+		break;
+
+
+	/* External line (0-31)
+	 * use LOUT/ROUT bits 10...6, reg 1 and 5
+	 */
+	case SOUND_MIXER_LINE:
+		devc->levels[whichDev] = lev_left | lev_right << 8;
+		waveartist_mixer_update(devc, whichDev);
+		break;
+
+	/* Mono microphone (0-3) mute,
+	 * 0db,10db,20db
+	 */
+	case SOUND_MIXER_MIC:
+#if 1
+		devc->levels[whichDev] = lev_left | lev_right << 8;
+#else
+		/* we do not need to mute volume of
+		 * an unused mic - it is simply unused...
+		 */
+		if (devc->handset_state & VNC_INTERNAL_MIC)
+			devc->levels[whichDev] = lev_right << 8;
+		else
+			levels[whichDev] = lev_left;
+#endif
+		waveartist_mixer_update(devc, whichDev);
+		break;
+
+	/* Recording level (0-7)
+	 */
+	case SOUND_MIXER_RECLEV:
+		devc->levels[whichDev] = lev_left | lev_right << 8;
+		waveartist_mixer_update(devc, whichDev);
+		break;
+
+	/* Mono External Aux1 (0-31)
+	 * use LINE1 bits 5...1, reg 1 and 5
+	 */
+	case SOUND_MIXER_LINE1:
+		devc->levels[whichDev] = lev_left | lev_right << 8;
+		waveartist_mixer_update(devc, whichDev);
+		break;
+
+	/* WaveArtist PCM (0-32767)
+	 */
+	case SOUND_MIXER_PCM:
+		devc->levels[whichDev] = lev_left | lev_right << 8;
+		waveartist_mixer_update(devc, whichDev);
+		break;
+
+	/* Internal synthesizer (0-31)
+	 */
+	case SOUND_MIXER_SYNTH:
+		devc->levels[whichDev] = lev_left | lev_right << 8;
+		waveartist_mixer_update(devc, whichDev);
+		break;
+
+
+	/* Select recording input source
+	 */
+	case SOUND_MIXER_RECSRC:
+		devmask = level & POSSIBLE_RECORDING_DEVICES;
+
+		changed = devmask ^ devc->recmask;
+		devc->recmask = devmask;
+
+		for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
+			if (changed & (1 << i))
+				waveartist_mixer_update(devc, i);
+
+		waveartist_select_input(devc, level);
+		/*
+		 * do not save in "levels", return current setting
+		 */
+		return devc->recmask;
+
+	default:
+		return -EINVAL;
+	}
+
+	return devc->levels[whichDev];
+}
+
+static void
+waveartist_mixer_reset(wavnc_info *devc)
+{
+	int i;
+
+	if (debug_flg & DEBUG_MIXER)
+		printk("%s: mixer_reset\n", devc->hw.name);
+
+	/*
+	 * reset mixer cmd
+	 */
+	waveartist_sendcmd(&devc->hw, 0x33);
+
+	/*
+	 * set input for ADC to come from
+	 * a mux (left and right) == reg 9,
+	 * initially none
+	 */
+	waveartist_cmd3(devc, 0x0032, 0x9800, 0xa836);
+
+	/*
+	 * set mixer input select to none, RX filter gains 0 db
+	 */
+	waveartist_cmd3(devc, 0x0032, 0x4c00, 0x8c00);
+
+	/*
+	 * set bit 0 reg 2 to 1 - unmute MonoOut
+	 */
+	waveartist_cmd3(devc, 0x0032, 0x2801, 0x6800);
+
+	for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
+		waveartist_mixer_update(devc, i);
+
+	/* set default input device = internal mic
+	 * current recording device = none
+	 * no handset
+	 */
+	devc->recmask = 0;
+	devc->handset_state = VNC_INTERNAL_MIC;
+//	waveartist_mixer_set(devc, SOUND_MIXER_RECSRC, SOUND_MASK_MIC);
+
+	/*
+	 * start from enabling the hw setting
+	 */
+	devc->handset_mute_sw = 0;
+	devc->supported_devices = SUPPORTED_MIXER_DEVICES;
+	devc->rec_devices = POSSIBLE_RECORDING_DEVICES;
+}
+
+static int
+waveartist_mixer_ioctl(int dev, unsigned int cmd, caddr_t arg)
+{
+	wavnc_info *devc = (wavnc_info *)audio_devs[dev]->devc;
+#if 0
+	//use this call to override the automatic handset behaviour - ignore handset
+	//bit 0x80 = total control over handset - do not react to plug/unplug
+	//bit 0x10 = 1 == internal mic, otherwise handset mic
+	//bit 0x01 = 1 == mute internal speaker, otherwise unmute
+
+	if (cmd == SOUND_MIXER_PRIVATE1) {
+		int             val, temp;
+
+		val = *(int *) arg;
+
+//		printk("MIXER_PRIVATE1: passed parameter = 0x%X.\n",val);
+		return -EINVAL;		//check if parameter is logical...
+
+		devc->soft_mute_flag = val;
+
+		temp = val & VNC_INTERNAL_SPKR;
+		if (temp != devc->mute_state) {
+//			printk("MIXER_PRIVATE1: mute_mono(0x%X).\n",temp);
+			vnc_mute(devc, temp);
+		}
+
+//		temp = devc->handset_state;
+
+		// do not check if it is not already in
+		// the right setting, since we are
+		// laying about the current state...
+
+//		if ((val & VNC_INTERNAL_MIC) != temp) {
+			devc->handset_state = val & VNC_INTERNAL_MIC;
+//			printk("MIXER_PRIVATE1: mixer_set(0x%X).\n",devc->handset_state);
+			wa_mixer_set(devc, SOUND_MIXER_RECSRC, SOUND_MASK_MIC);
+//			devc->handset_state = temp;
+		}
+		return 0;
+	}
+#if 0
+	if (cmd == SOUND_MIXER_PRIVATE2) {
+#define VNC_SOUND_PAUSE         0x53    //to pause the DSP
+#define VNC_SOUND_RESUME        0x57    //to unpause the DSP
+		int             val;
+
+		val = *(int *) arg;
+
+		printk("MIXER_PRIVATE2: passed parameter = 0x%X.\n",val);
+
+		if (val == VNC_SOUND_PAUSE) {
+			wa_sendcmd(0x16);    //PAUSE the ADC
+		} else if (val == VNC_SOUND_RESUME) {
+			wa_sendcmd(0x18);    //RESUME the ADC
+		} else {
+			return -EINVAL;      //invalid parameters...
+		}
+		return 0;
+	}
+#endif
+
+	if (cmd == SOUND_MIXER_PRIVATE3) {
+		long unsigned   flags;
+		int             mixer_reg[15];	//reg 14 is actually a command: read,write,reset
+
+		int             val;
+		int             i;
+
+		val = *(int *) arg;
+
+		if (verify_area(VERIFY_READ, (void *) val, sizeof(mixer_reg) == -EFAULT))
+			return (-EFAULT);
+
+		memcpy_fromfs(&mixer_reg, (void *) val, sizeof(mixer_reg));
+
+		if (mixer_reg[0x0E] == MIXER_PRIVATE3_RESET) { 	//reset command??
+			wavnc_mixer_reset(devc);
+			return (0);
+		} else if (mixer_reg[0x0E] == MIXER_PRIVATE3_WRITE) {	//write command??
+//			printk("WaveArtist Mixer: Private write command.\n");
+
+			wa_sendcmd(0x32);	//Pair1 - word 1 and 5
+			wa_sendcmd(mixer_reg[0]);
+			wa_sendcmd(mixer_reg[4]);
+
+			wa_sendcmd(0x32);	//Pair2 - word 2 and 6
+			wa_sendcmd(mixer_reg[1]);
+			wa_sendcmd(mixer_reg[5]);
+
+			wa_sendcmd(0x32);	//Pair3 - word 3 and 7
+			wa_sendcmd(mixer_reg[2]);
+			wa_sendcmd(mixer_reg[6]);
+
+			wa_sendcmd(0x32);	//Pair4 - word 4 and 8
+			wa_sendcmd(mixer_reg[3]);
+			wa_sendcmd(mixer_reg[7]);
+
+			wa_sendcmd(0x32);	//Pair5 - word 9 and 10
+			wa_sendcmd(mixer_reg[8]);
+			wa_sendcmd(mixer_reg[9]);
+
+			wa_sendcmd(0x0031);		//set left and right PCM
+			wa_sendcmd(mixer_reg[0x0A]);
+			wa_sendcmd(mixer_reg[0x0B]);
+
+			wa_sendcmd(0x0131);		//set left and right FM
+			wa_sendcmd(mixer_reg[0x0C]);
+			wa_sendcmd(mixer_reg[0x0D]);
+
+			return 0;
+		} else if (mixer_reg[0x0E] == MIXER_PRIVATE3_READ) {	//read command?
+//			printk("WaveArtist Mixer: Private read command.\n");
+
+			//first read all current values...
+			save_flags(flags);
+			cli();
+
+			for (i = 0; i < 14; i++) {
+				wa_sendcmd((i << 8) + 0x30);	// get ready for command nn30H
+
+				while (!(inb(STATR) & CMD_RF)) {
+				};	//wait for response ready...
+
+				mixer_reg[i] = inw(CMDR);
+			}
+			restore_flags(flags);
+
+			if (verify_area(VERIFY_WRITE, (void *) val, sizeof(mixer_reg) == -EFAULT))
+				return (-EFAULT);
+
+			memcpy_tofs((void *) val, &mixer_reg, sizeof(mixer_reg));
+			return 0;
+		} else
+			return -EINVAL;
+	}
+#endif
+	if (((cmd >> 8) & 0xff) == 'M') {
+		if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
+			int val;
+
+			if (get_user(val, (int *)arg))
+				return -EFAULT;
+
+			/*
+			 * special case for master volume: if we
+			 * received this call - switch from hw
+			 * volume control to a software volume
+			 * control, till the hw volume is modified
+			 * to signal that user wants to be back in
+			 * hardware...
+			 */
+			if ((cmd & 0xff) == SOUND_MIXER_VOLUME)
+				devc->use_slider = 0;
+
+			return waveartist_mixer_set(devc, cmd & 0xff, val);
+		} else {
+			int ret;
+
+			/*
+			 * Return parameters
+			 */
+			switch (cmd & 0xff) {
+			case SOUND_MIXER_RECSRC:
+				ret = devc->recmask;
+
+				if (devc->handset_state & VNC_INTERNAL_MIC)
+					ret |= SOUND_MASK_SPEAKER;
+				break;
+
+			case SOUND_MIXER_DEVMASK:
+				ret = devc->supported_devices;
+				break;
+
+			case SOUND_MIXER_STEREODEVS:
+				ret = devc->supported_devices &
+					~(SOUND_MASK_SPEAKER|SOUND_MASK_IMIX);
+				break;
+
+			case SOUND_MIXER_RECMASK:
+				ret = devc->rec_devices;
+				break;
+
+			case SOUND_MIXER_CAPS:
+				ret = SOUND_CAP_EXCL_INPUT;
+				break;
+
+			default:
+				if ((cmd & 0xff) < SOUND_MIXER_NRDEVICES)
+					ret = devc->levels[cmd & 0xff];
+				else
+					return -EINVAL;
+			}
+
+			return put_user(ret, (int *)arg) ? -EINVAL : 0;
+		}
+	}
+
+	return -ENOIOCTLCMD;
+}
+
+static struct mixer_operations waveartist_mixer_operations =
+{
+	"WaveArtist",
+	"WaveArtist NetWinder",
+	waveartist_mixer_ioctl
+};
+
+static int
+waveartist_init(wavnc_info *devc)
+{
+	wavnc_port_info *portc;
+	char rev[3], dev_name[64];
+	int my_dev;
+
+	waveartist_reset(devc);
+
+	sprintf(dev_name, "%s (%s", devc->hw.name, devc->chip_name);
+
+	if (waveartist_getrev(&devc->hw, rev)) {
+		strcat(dev_name, " rev. ");
+		strcat(dev_name, rev);
+	}
+	strcat(dev_name, ")");
+
+	conf_printf2(dev_name, devc->hw.io_base, devc->hw.irq,
+		     devc->hw.dma, devc->hw.dma2);
+
+	portc = (wavnc_port_info *)kmalloc(sizeof(wavnc_port_info), GFP_KERNEL);
+	if (portc == NULL)
+		goto nomem;
+
+	memset(portc, 0, sizeof(wavnc_port_info));
+
+	my_dev = sound_install_audiodrv(AUDIO_DRIVER_VERSION, dev_name,
+			&waveartist_audio_driver, sizeof(struct audio_driver),
+			devc->audio_flags, AFMT_U8 | AFMT_S16_LE | AFMT_S8,
+			devc, devc->hw.dma, devc->hw.dma2);
+
+	if (my_dev < 0)
+		goto free;
+
+	audio_devs[my_dev]->portc = portc;
+
+	waveartist_mixer_reset(devc);
+
+	/*
+	 * clear any pending interrupt
+	 */
+	waveartist_iack(devc);
+
+	if (request_irq(devc->hw.irq, waveartist_intr, 0, devc->hw.name, devc) < 0) {
+		printk("%s: IRQ %d in use\n",
+			devc->hw.name, devc->hw.irq);
+		goto uninstall;
+	}
+
+	if (sound_alloc_dma(devc->hw.dma, devc->hw.name)) {
+		printk("%s: Can't allocate DMA%d\n",
+			devc->hw.name, devc->hw.dma);
+		goto uninstall_irq;
+	}
+
+	if (devc->hw.dma != devc->hw.dma2 && devc->hw.dma2 != NO_DMA)
+		if (sound_alloc_dma(devc->hw.dma2, devc->hw.name)) {
+			printk("%s: can't allocate DMA%d\n",
+				devc->hw.name, devc->hw.dma2);
+			goto uninstall_dma;
+		}
+
+	waveartist_set_ctlr(&devc->hw, 0, DMA1_IE | DMA0_IE);
+
+	audio_devs[my_dev]->mixer_dev =
+		sound_install_mixer(MIXER_DRIVER_VERSION,
+				dev_name,
+				&waveartist_mixer_operations,
+				sizeof(struct mixer_operations),
+				devc);
+
+	return my_dev;
+
+uninstall_dma:
+	sound_free_dma(devc->hw.dma);
+
+uninstall_irq:
+	free_irq(devc->hw.irq, devc);
+
+uninstall:
+	sound_unload_audiodev(my_dev);
+
+free:
+	kfree(portc);
+
+nomem:
+	return -1;
+}
+
+/*
+ * Corel Netwinder specifics...
+ */
+static void
+vnc_mute(wavnc_info *devc, int mute)
+{
+	extern spinlock_t gpio_lock;
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpio_lock, flags);
+	cpld_modify(CPLD_UNMUTE, mute ? 0 : CPLD_UNMUTE);
+	spin_unlock_irqrestore(&gpio_lock, flags);
+
+	devc->mute_state = mute;
+}
+
+static int
+vnc_volume_slider(wavnc_info *devc)
+{
+	static signed int old_slider_volume;
+	unsigned long flags;
+	signed int volume = 255;
+
+	*CSR_TIMER1_LOAD = 0x00ffffff;
+
+	save_flags(flags);
+	cli();
+
+	outb(0xFF, 0x201);
+	*CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV1;
+
+	while (volume && (inb(0x201) & 0x01))
+		volume--;
+
+	*CSR_TIMER1_CNTL = 0;
+
+	restore_flags(flags);
+	
+	volume = 0x00ffffff - *CSR_TIMER1_VALUE;
+
+
+#ifndef REVERSE
+	volume = 150 - (volume >> 5);
+#else
+	volume = (volume >> 6) - 25;
+#endif
+
+	if (volume < 0)
+		volume = 0;
+
+	if (volume > 100)
+		volume = 100;
+
+	/*
+	 * slider quite often reads +-8, so debounce this random noise
+	 */
+	if ((volume - old_slider_volume) > 7 ||
+	    (old_slider_volume - volume) > 7) {
+		old_slider_volume = volume;
+
+		DEB(printk("Slider volume: %d.\n", old_slider_volume));
+	}
+
+	return old_slider_volume;
+}
+
+static int
+vnc_slider(wavnc_info *devc)
+{
+	signed int slider_volume;
+	unsigned int temp;
+
+	/*
+	 * read the "buttons" state.
+	 *  Bit 4 = handset present,
+	 *  Bit 5 = offhook
+	 */
+	// the state should be "querable" via a private IOCTL call
+	temp = inb(0x201) & 0x30;
+
+	if (!devc->handset_mute_sw &&
+	    (temp ^ devc->handset_state) & VNC_INTERNAL_MIC) {
+		devc->handset_state = temp;
+		devc->handset_mute_sw = 0;
+
+		vnc_mute(devc, (temp & VNC_INTERNAL_MIC) ? 1 : 0);
+	}
+
+	slider_volume = vnc_volume_slider(devc);
+
+	/*
+	 * If we're using software controlled volume, and
+	 * the slider moves by more than 20%, then we
+	 * switch back to slider controlled volume.
+	 */
+	if (devc->slider_vol > slider_volume) {
+		if (devc->slider_vol - slider_volume > 20)
+			devc->use_slider = 1;
+	} else {
+		if (slider_volume - devc->slider_vol > 20)
+			devc->use_slider = 1;
+	}
+
+	/*
+	 * use only left channel
+	 */
+	temp = levels[SOUND_MIXER_VOLUME] & 0xFF;
+
+	if (slider_volume != temp && devc->use_slider) {
+		devc->slider_vol = slider_volume;
+
+		waveartist_mixer_set(devc, SOUND_MIXER_VOLUME,
+			slider_volume | slider_volume << 8);
+
+		return 1;
+	}
+
+	return 0;
+}
+
+static void
+vnc_slider_tick(unsigned long data)
+{
+	int next_timeout;
+
+	if (vnc_slider(adev_info + data))
+		next_timeout = 5;	// mixer reported change
+	else
+		next_timeout = VNC_TIMER_PERIOD;
+
+	mod_timer(&vnc_timer, jiffies + next_timeout);
+}
+
+int
+probe_waveartist(struct address_info *hw_config)
+{
+	wavnc_info *devc = &adev_info[nr_waveartist_devs];
+
+	if (nr_waveartist_devs >= MAX_AUDIO_DEV) {
+		printk("waveartist: too many audio devices\n");
+		return 0;
+	}
+
+	if (check_region(hw_config->io_base, 15))  {
+		printk("WaveArtist: I/O port conflict\n");
+		return 0;
+	}
+
+	if (hw_config->irq > 31 || hw_config->irq < 16) {
+		printk("WaveArtist: Bad IRQ %d\n", hw_config->irq);
+		return 0;
+	}
+
+	if (hw_config->dma != 3) {
+		printk("WaveArtist: Bad DMA %d\n", hw_config->dma);
+		return 0;
+	}
+
+	hw_config->name = "WaveArtist";
+	devc->hw = *hw_config;
+	devc->open_mode = 0;
+	devc->chip_name = "RWA-010";
+
+	return 1;
+}
+
+void
+attach_waveartist(struct address_info *hw)
+{
+	wavnc_info *devc = &adev_info[nr_waveartist_devs];
+
+	/*
+	 * NOTE! If irq < 0, there is another driver which has allocated the
+	 *   IRQ so that this driver doesn't need to allocate/deallocate it.
+	 *   The actually used IRQ is ABS(irq).
+	 */
+	devc->hw = *hw;
+	devc->hw.irq = (hw->irq > 0) ? hw->irq : 0;
+	devc->open_mode = 0;
+	devc->playback_dev = 0;
+	devc->record_dev = 0;
+	devc->audio_flags = DMA_AUTOMODE;
+	devc->levels = levels;
+
+	if (hw->dma != hw->dma2 && hw->dma2 != NO_DMA)
+		devc->audio_flags |= DMA_DUPLEX;
+
+	request_region(hw->io_base, 15, devc->hw.name);
+
+	devc->dev_no = waveartist_init(devc);
+
+	if (devc->dev_no < 0)
+		release_region(hw->io_base, 15);
+	else {
+		init_timer(&vnc_timer);
+		vnc_timer.function = vnc_slider_tick;
+		vnc_timer.expires  = jiffies;
+		vnc_timer.data     = nr_waveartist_devs;
+		add_timer(&vnc_timer);
+
+		nr_waveartist_devs += 1;
+
+		vnc_mute(devc, 0);
+	}
+}
+
+void
+unload_waveartist(struct address_info *hw)
+{
+	wavnc_info *devc = NULL;
+	int i;
+
+	for (i = 0; i < nr_waveartist_devs; i++)
+		if (hw->io_base == adev_info[i].hw.io_base) {
+			devc = adev_info + i;
+			break;
+		}
+
+	if (devc != NULL) {
+		int mixer;
+
+		release_region(devc->hw.io_base, 15);
+
+		waveartist_set_ctlr(&devc->hw, DMA1_IE|DMA0_IE, 0);
+
+		if (devc->hw.irq >= 0)
+			free_irq(devc->hw.irq, devc);
+
+		sound_free_dma(devc->hw.dma);
+
+		if (devc->hw.dma != devc->hw.dma2 &&
+		    devc->hw.dma2 != NO_DMA)
+			sound_free_dma(devc->hw.dma2);
+
+		del_timer(&vnc_timer);
+
+		mixer = audio_devs[devc->dev_no]->mixer_dev;
+
+		if (mixer >= 0)
+			sound_unload_mixerdev(mixer);
+
+		if (devc->dev_no >= 0)
+			sound_unload_audiodev(devc->dev_no);
+
+		nr_waveartist_devs -= 1;
+
+		for (; i < nr_waveartist_devs; i++)
+			adev_info[i] = adev_info[i + 1];
+	} else
+		printk("waveartist: can't find device to unload\n");
+}
+
+#ifdef MODULE
+
+MODULE_PARM(io, "i");		/* IO base */
+MODULE_PARM(irq, "i");		/* IRQ */
+MODULE_PARM(dma, "i");		/* DMA */
+MODULE_PARM(dma2, "i");		/* DMA2 */
+
+int io   = CONFIG_WAVEARTIST_BASE;
+int irq  = CONFIG_WAVEARTIST_IRQ;
+int dma  = CONFIG_WAVEARTIST_DMA;
+int dma2 = CONFIG_WAVEARTIST_DMA2;
+
+static int attached;
+
+struct address_info hw_config;
+
+int init_module(void)
+{
+	hw_config.io_base = io;
+	hw_config.irq = irq;
+	hw_config.dma = dma;
+	hw_config.dma2 = dma2;
+
+	if (!probe_waveartist(&hw_config))
+		return -ENODEV;
+
+	attach_waveartist(&hw_config);
+	attached = 1;
+
+	SOUND_LOCK;
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	if (attached) {
+		SOUND_LOCK_END;
+
+		unload_waveartist(&hw_config);
+	}
+}
+#endif

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TCL-scripts by Sam Shen, slshen@lbl.gov