Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

3 files changed, 1445 insertions, 0 deletions

diff --git a/sound/isa/ad1848/Makefile b/sound/isa/ad1848/Makefile
new file mode 100644
index 000000000000..45d59998aa69
--- /dev/null
+++ b/sound/isa/ad1848/Makefile
@@ -0,0 +1,15 @@
+#
+# Makefile for ALSA
+# Copyright (c) 2001 by Jaroslav Kysela <perex@suse.cz>
+#
+
+snd-ad1848-lib-objs := ad1848_lib.o
+snd-ad1848-objs := ad1848.o
+
+# Toplevel Module Dependency
+obj-$(CONFIG_SND_CMI8330) += snd-ad1848-lib.o
+obj-$(CONFIG_SND_SGALAXY) += snd-ad1848-lib.o
+obj-$(CONFIG_SND_AD1848) += snd-ad1848.o snd-ad1848-lib.o
+obj-$(CONFIG_SND_OPTI92X_AD1848) += snd-ad1848-lib.o
+
+obj-m := $(sort $(obj-m))
diff --git a/sound/isa/ad1848/ad1848.c b/sound/isa/ad1848/ad1848.c
new file mode 100644
index 000000000000..8c399340cd72
--- /dev/null
+++ b/sound/isa/ad1848/ad1848.c
@@ -0,0 +1,151 @@
+/*
+ *  Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
+ *  Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
+ *                   Jaroslav Kysela <perex@suse.cz>
+ *  Based on card-4232.c by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ *   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/ad1848.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("AD1848/AD1847/CS4248");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
+	        "{Analog Devices,AD1847},"
+		"{Crystal Semiconductors,CS4248}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
+static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
+static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,11,12,15 */
+static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
+static int thinkpad[SNDRV_CARDS];			/* Thinkpad special case */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for AD1848 soundcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for AD1848 soundcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable AD1848 soundcard.");
+module_param_array(port, long, NULL, 0444);
+MODULE_PARM_DESC(port, "Port # for AD1848 driver.");
+module_param_array(irq, int, NULL, 0444);
+MODULE_PARM_DESC(irq, "IRQ # for AD1848 driver.");
+module_param_array(dma1, int, NULL, 0444);
+MODULE_PARM_DESC(dma1, "DMA1 # for AD1848 driver.");
+module_param_array(thinkpad, bool, NULL, 0444);
+MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
+
+static snd_card_t *snd_ad1848_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+
+
+static int __init snd_card_ad1848_probe(int dev)
+{
+	snd_card_t *card;
+	ad1848_t *chip;
+	snd_pcm_t *pcm;
+	int err;
+
+	if (port[dev] == SNDRV_AUTO_PORT) {
+		snd_printk(KERN_ERR "ad1848: specify port\n");
+		return -EINVAL;
+	}
+	if (irq[dev] == SNDRV_AUTO_IRQ) {
+		snd_printk(KERN_ERR "ad1848: specify irq\n");
+		return -EINVAL;
+	}
+	if (dma1[dev] == SNDRV_AUTO_DMA) {
+		snd_printk(KERN_ERR "ad1848: specify dma1\n");
+		return -EINVAL;
+	}
+
+	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+	if (card == NULL)
+		return -ENOMEM;
+
+	if ((err = snd_ad1848_create(card, port[dev],
+				     irq[dev],
+				     dma1[dev],
+				     thinkpad[dev] ? AD1848_HW_THINKPAD : AD1848_HW_DETECT,
+				     &chip)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+
+	if ((err = snd_ad1848_pcm(chip, 0, &pcm)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	if ((err = snd_ad1848_mixer(chip)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	strcpy(card->driver, "AD1848");
+	strcpy(card->shortname, pcm->name);
+
+	sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
+		pcm->name, chip->port, irq[dev], dma1[dev]);
+
+	if (thinkpad[dev]) {
+		strcat(card->longname, " [Thinkpad]");
+	}
+
+	if ((err = snd_card_register(card)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	snd_ad1848_cards[dev] = card;
+	return 0;
+}
+
+static int __init alsa_card_ad1848_init(void)
+{
+	int dev, cards;
+
+	for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++)
+		if (snd_card_ad1848_probe(dev) >= 0)
+			cards++;
+
+	if (!cards) {
+#ifdef MODULE
+		printk(KERN_ERR "AD1848 soundcard not found or device busy\n");
+#endif
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static void __exit alsa_card_ad1848_exit(void)
+{
+	int idx;
+
+	for (idx = 0; idx < SNDRV_CARDS; idx++)
+		snd_card_free(snd_ad1848_cards[idx]);
+}
+
+module_init(alsa_card_ad1848_init)
+module_exit(alsa_card_ad1848_exit)
diff --git a/sound/isa/ad1848/ad1848_lib.c b/sound/isa/ad1848/ad1848_lib.c
new file mode 100644
index 000000000000..8fb3db103e48
--- /dev/null
+++ b/sound/isa/ad1848/ad1848_lib.c
@@ -0,0 +1,1279 @@
+/*
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *  Routines for control of AD1848/AD1847/CS4248
+ *
+ *
+ *   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#define SNDRV_MAIN_OBJECT_FILE
+#include <sound/driver.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <sound/core.h>
+#include <sound/ad1848.h>
+#include <sound/control.h>
+#include <sound/pcm_params.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
+MODULE_LICENSE("GPL");
+
+#if 0
+#define SNDRV_DEBUG_MCE
+#endif
+
+/*
+ *  Some variables
+ */
+
+static unsigned char freq_bits[14] = {
+	/* 5510 */	0x00 | AD1848_XTAL2,
+	/* 6620 */	0x0E | AD1848_XTAL2,
+	/* 8000 */	0x00 | AD1848_XTAL1,
+	/* 9600 */	0x0E | AD1848_XTAL1,
+	/* 11025 */	0x02 | AD1848_XTAL2,
+	/* 16000 */	0x02 | AD1848_XTAL1,
+	/* 18900 */	0x04 | AD1848_XTAL2,
+	/* 22050 */	0x06 | AD1848_XTAL2,
+	/* 27042 */	0x04 | AD1848_XTAL1,
+	/* 32000 */	0x06 | AD1848_XTAL1,
+	/* 33075 */	0x0C | AD1848_XTAL2,
+	/* 37800 */	0x08 | AD1848_XTAL2,
+	/* 44100 */	0x0A | AD1848_XTAL2,
+	/* 48000 */	0x0C | AD1848_XTAL1
+};
+
+static unsigned int rates[14] = {
+	5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
+	27042, 32000, 33075, 37800, 44100, 48000
+};
+
+static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
+	.count = 14,
+	.list = rates,
+	.mask = 0,
+};
+
+static unsigned char snd_ad1848_original_image[16] =
+{
+	0x00,			/* 00 - lic */
+	0x00,			/* 01 - ric */
+	0x9f,			/* 02 - la1ic */
+	0x9f,			/* 03 - ra1ic */
+	0x9f,			/* 04 - la2ic */
+	0x9f,			/* 05 - ra2ic */
+	0xbf,			/* 06 - loc */
+	0xbf,			/* 07 - roc */
+	0x20,			/* 08 - dfr */
+	AD1848_AUTOCALIB,	/* 09 - ic */
+	0x00,			/* 0a - pc */
+	0x00,			/* 0b - ti */
+	0x00,			/* 0c - mi */
+	0x00,			/* 0d - lbc */
+	0x00,			/* 0e - dru */
+	0x00,			/* 0f - drl */
+};
+
+/*
+ *  Basic I/O functions
+ */
+
+void snd_ad1848_out(ad1848_t *chip,
+			   unsigned char reg,
+			   unsigned char value)
+{
+	int timeout;
+
+	for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
+		udelay(100);
+#ifdef CONFIG_SND_DEBUG
+	if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
+		snd_printk("auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
+#endif
+	outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
+	outb(chip->image[reg] = value, AD1848P(chip, REG));
+	mb();
+#if 0
+	printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
+#endif
+}
+
+static void snd_ad1848_dout(ad1848_t *chip,
+			    unsigned char reg, unsigned char value)
+{
+	int timeout;
+
+	for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
+		udelay(100);
+	outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
+	outb(value, AD1848P(chip, REG));
+	mb();
+}
+
+static unsigned char snd_ad1848_in(ad1848_t *chip, unsigned char reg)
+{
+	int timeout;
+
+	for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
+		udelay(100);
+#ifdef CONFIG_SND_DEBUG
+	if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
+		snd_printk("auto calibration time out - reg = 0x%x\n", reg);
+#endif
+	outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
+	mb();
+	return inb(AD1848P(chip, REG));
+}
+
+#if 0
+
+static void snd_ad1848_debug(ad1848_t *chip)
+{
+	printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
+	printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
+	printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
+	printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
+	printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
+	printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
+	printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
+	printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
+	printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
+	printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
+	printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
+	printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
+	printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
+	printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
+	printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
+	printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
+	printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
+	printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
+}
+
+#endif
+
+/*
+ *  AD1848 detection / MCE routines
+ */
+
+static void snd_ad1848_mce_up(ad1848_t *chip)
+{
+	unsigned long flags;
+	int timeout;
+
+	for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
+		udelay(100);
+#ifdef CONFIG_SND_DEBUG
+	if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
+		snd_printk("mce_up - auto calibration time out (0)\n");
+#endif
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	chip->mce_bit |= AD1848_MCE;
+	timeout = inb(AD1848P(chip, REGSEL));
+	if (timeout == 0x80)
+		snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
+	if (!(timeout & AD1848_MCE))
+		outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+}
+
+static void snd_ad1848_mce_down(ad1848_t *chip)
+{
+	unsigned long flags;
+	int timeout;
+	signed long time;
+
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	for (timeout = 5; timeout > 0; timeout--)
+		inb(AD1848P(chip, REGSEL));
+	/* end of cleanup sequence */
+	for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
+		udelay(100);
+#if 0
+	printk("(1) timeout = %i\n", timeout);
+#endif
+#ifdef CONFIG_SND_DEBUG
+	if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
+		snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
+#endif
+	chip->mce_bit &= ~AD1848_MCE;
+	timeout = inb(AD1848P(chip, REGSEL));
+	outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
+	if (timeout == 0x80)
+		snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
+	if ((timeout & AD1848_MCE) == 0) {
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		return;
+	}
+	/* calibration process */
+
+	for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
+	if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
+		snd_printd("mce_down - auto calibration time out (1)\n");
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		return;
+	}
+#if 0
+	printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
+#endif
+	time = HZ / 4;
+	while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		if (time <= 0) {
+			snd_printk("mce_down - auto calibration time out (2)\n");
+			return;
+		}
+		set_current_state(TASK_INTERRUPTIBLE);
+		time = schedule_timeout(time);
+		spin_lock_irqsave(&chip->reg_lock, flags);
+	}
+#if 0
+	printk("(3) jiffies = %li\n", jiffies);
+#endif
+	time = HZ / 10;
+	while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		if (time <= 0) {
+			snd_printk("mce_down - auto calibration time out (3)\n");
+			return;
+		}
+		set_current_state(TASK_INTERRUPTIBLE);
+		time = schedule_timeout(time);
+		spin_lock_irqsave(&chip->reg_lock, flags);
+	}
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+#if 0
+	printk("(4) jiffies = %li\n", jiffies);
+	snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
+#endif
+}
+
+static unsigned int snd_ad1848_get_count(unsigned char format,
+				         unsigned int size)
+{
+	switch (format & 0xe0) {
+	case AD1848_LINEAR_16:
+		size >>= 1;
+		break;
+	}
+	if (format & AD1848_STEREO)
+		size >>= 1;
+	return size;
+}
+
+static int snd_ad1848_trigger(ad1848_t *chip, unsigned char what,
+			      int channel, int cmd)
+{
+	int result = 0;
+
+#if 0
+	printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
+#endif
+	spin_lock(&chip->reg_lock);
+	if (cmd == SNDRV_PCM_TRIGGER_START) {
+		if (chip->image[AD1848_IFACE_CTRL] & what) {
+			spin_unlock(&chip->reg_lock);
+			return 0;
+		}
+		snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
+		chip->mode |= AD1848_MODE_RUNNING;
+	} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+		if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
+			spin_unlock(&chip->reg_lock);
+			return 0;
+		}
+		snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
+		chip->mode &= ~AD1848_MODE_RUNNING;
+	} else {
+		result = -EINVAL;
+	}
+	spin_unlock(&chip->reg_lock);
+	return result;
+}
+
+/*
+ *  CODEC I/O
+ */
+
+static unsigned char snd_ad1848_get_rate(unsigned int rate)
+{
+	int i;
+
+	for (i = 0; i < 14; i++)
+		if (rate == rates[i])
+			return freq_bits[i];
+	snd_BUG();
+	return freq_bits[13];
+}
+
+static int snd_ad1848_ioctl(snd_pcm_substream_t * substream,
+			    unsigned int cmd, void *arg)
+{
+	return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
+static unsigned char snd_ad1848_get_format(int format, int channels)
+{
+	unsigned char rformat;
+
+	rformat = AD1848_LINEAR_8;
+	switch (format) {
+	case SNDRV_PCM_FORMAT_A_LAW:	rformat = AD1848_ALAW_8; break;
+	case SNDRV_PCM_FORMAT_MU_LAW:	rformat = AD1848_ULAW_8; break;
+	case SNDRV_PCM_FORMAT_S16_LE:	rformat = AD1848_LINEAR_16; break;
+	}
+	if (channels > 1)
+		rformat |= AD1848_STEREO;
+#if 0
+	snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
+#endif
+	return rformat;
+}
+
+static void snd_ad1848_calibrate_mute(ad1848_t *chip, int mute)
+{
+	unsigned long flags;
+	
+	mute = mute ? 1 : 0;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	if (chip->calibrate_mute == mute) {
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		return;
+	}
+	if (!mute) {
+		snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
+		snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
+	}
+	snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
+	snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
+	snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
+	snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
+	snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
+	snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
+	chip->calibrate_mute = mute;
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+}
+
+static void snd_ad1848_set_data_format(ad1848_t *chip, snd_pcm_hw_params_t *hw_params)
+{
+	if (hw_params == NULL) {
+		chip->image[AD1848_DATA_FORMAT] = 0x20;
+	} else {
+		chip->image[AD1848_DATA_FORMAT] =
+		    snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
+		    snd_ad1848_get_rate(params_rate(hw_params));
+	}
+	// snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
+}
+
+static int snd_ad1848_open(ad1848_t *chip, unsigned int mode)
+{
+	unsigned long flags;
+
+	down(&chip->open_mutex);
+	if (chip->mode & AD1848_MODE_OPEN) {
+		up(&chip->open_mutex);
+		return -EAGAIN;
+	}
+	snd_ad1848_mce_down(chip);
+
+#ifdef SNDRV_DEBUG_MCE
+	snd_printk("open: (1)\n");
+#endif
+	snd_ad1848_mce_up(chip);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
+			     AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
+			     AD1848_CALIB_MODE);
+	chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
+	snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	snd_ad1848_mce_down(chip);
+
+#ifdef SNDRV_DEBUG_MCE
+	snd_printk("open: (2)\n");
+#endif
+
+	snd_ad1848_set_data_format(chip, NULL);
+
+	snd_ad1848_mce_up(chip);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	snd_ad1848_mce_down(chip);
+
+#ifdef SNDRV_DEBUG_MCE
+	snd_printk("open: (3)\n");
+#endif
+
+	/* ok. now enable and ack CODEC IRQ */
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	outb(0, AD1848P(chip, STATUS));	/* clear IRQ */
+	outb(0, AD1848P(chip, STATUS));	/* clear IRQ */
+	chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
+	snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+	chip->mode = mode;
+	up(&chip->open_mutex);
+
+	return 0;
+}
+
+static void snd_ad1848_close(ad1848_t *chip)
+{
+	unsigned long flags;
+
+	down(&chip->open_mutex);
+	if (!chip->mode) {
+		up(&chip->open_mutex);
+		return;
+	}
+	/* disable IRQ */
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	outb(0, AD1848P(chip, STATUS));	/* clear IRQ */
+	outb(0, AD1848P(chip, STATUS));	/* clear IRQ */
+	chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
+	snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+	/* now disable capture & playback */
+
+	snd_ad1848_mce_up(chip);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
+			     AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
+	snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	snd_ad1848_mce_down(chip);
+
+	/* clear IRQ again */
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	outb(0, AD1848P(chip, STATUS));	/* clear IRQ */
+	outb(0, AD1848P(chip, STATUS));	/* clear IRQ */
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+	chip->mode = 0;
+	up(&chip->open_mutex);
+}
+
+/*
+ *  ok.. exported functions..
+ */
+
+static int snd_ad1848_playback_trigger(snd_pcm_substream_t * substream,
+				       int cmd)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
+}
+
+static int snd_ad1848_capture_trigger(snd_pcm_substream_t * substream,
+				      int cmd)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
+}
+
+static int snd_ad1848_playback_hw_params(snd_pcm_substream_t * substream,
+					 snd_pcm_hw_params_t * hw_params)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	unsigned long flags;
+	int err;
+
+	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
+		return err;
+	snd_ad1848_calibrate_mute(chip, 1);
+	snd_ad1848_set_data_format(chip, hw_params);
+	snd_ad1848_mce_up(chip);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	snd_ad1848_mce_down(chip);
+	snd_ad1848_calibrate_mute(chip, 0);
+	return 0;
+}
+
+static int snd_ad1848_playback_hw_free(snd_pcm_substream_t * substream)
+{
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_ad1848_playback_prepare(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	unsigned long flags;
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+	chip->dma_size = size;
+	chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
+	snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
+	count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
+	snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+static int snd_ad1848_capture_hw_params(snd_pcm_substream_t * substream,
+					snd_pcm_hw_params_t * hw_params)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	unsigned long flags;
+	int err;
+
+	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
+		return err;
+	snd_ad1848_calibrate_mute(chip, 1);
+	snd_ad1848_set_data_format(chip, hw_params);
+	snd_ad1848_mce_up(chip);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	snd_ad1848_mce_down(chip);
+	snd_ad1848_calibrate_mute(chip, 0);
+	return 0;
+}
+
+static int snd_ad1848_capture_hw_free(snd_pcm_substream_t * substream)
+{
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_ad1848_capture_prepare(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	unsigned long flags;
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+	chip->dma_size = size;
+	chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
+	snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
+	count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
+	snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	ad1848_t *chip = dev_id;
+
+	if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
+	    (chip->mode & AD1848_MODE_RUNNING))
+		snd_pcm_period_elapsed(chip->playback_substream);
+	if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
+	    (chip->mode & AD1848_MODE_RUNNING))
+		snd_pcm_period_elapsed(chip->capture_substream);
+	outb(0, AD1848P(chip, STATUS));	/* clear global interrupt bit */
+	return IRQ_HANDLED;
+}
+
+static snd_pcm_uframes_t snd_ad1848_playback_pointer(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	size_t ptr;
+	
+	if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
+		return 0;
+	ptr = snd_dma_pointer(chip->dma, chip->dma_size);
+	return bytes_to_frames(substream->runtime, ptr);
+}
+
+static snd_pcm_uframes_t snd_ad1848_capture_pointer(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	size_t ptr;
+
+	if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
+		return 0;
+	ptr = snd_dma_pointer(chip->dma, chip->dma_size);
+	return bytes_to_frames(substream->runtime, ptr);
+}
+
+/*
+
+ */
+
+static void snd_ad1848_thinkpad_twiddle(ad1848_t *chip, int on) {
+
+	int tmp;
+
+	if (!chip->thinkpad_flag) return;
+
+	outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
+	tmp = inb(AD1848_THINKPAD_CTL_PORT2);
+
+	if (on)
+		/* turn it on */
+		tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
+	else
+		/* turn it off */
+		tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
+	
+	outb(tmp, AD1848_THINKPAD_CTL_PORT2);
+
+}
+
+#ifdef CONFIG_PM
+static int snd_ad1848_suspend(snd_card_t *card, pm_message_t state)
+{
+	ad1848_t *chip = card->pm_private_data;
+
+	snd_pcm_suspend_all(chip->pcm);
+	/* FIXME: save registers? */
+
+	if (chip->thinkpad_flag)
+		snd_ad1848_thinkpad_twiddle(chip, 0);
+
+	return 0;
+}
+
+static int snd_ad1848_resume(snd_card_t *card)
+{
+	ad1848_t *chip = card->pm_private_data;
+
+	if (chip->thinkpad_flag)
+		snd_ad1848_thinkpad_twiddle(chip, 1);
+
+	/* FIXME: restore registers? */
+
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+static int snd_ad1848_probe(ad1848_t * chip)
+{
+	unsigned long flags;
+	int i, id, rev, ad1847;
+	unsigned char *ptr;
+
+#if 0
+	snd_ad1848_debug(chip);
+#endif
+	id = ad1847 = 0;
+	for (i = 0; i < 1000; i++) {
+		mb();
+		if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
+			udelay(500);
+		else {
+			spin_lock_irqsave(&chip->reg_lock, flags);
+			snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
+			snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
+			snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
+			rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
+			if (rev == 0x65) {
+				spin_unlock_irqrestore(&chip->reg_lock, flags);
+				id = 1;
+				ad1847 = 1;
+				break;
+			}
+			if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
+				spin_unlock_irqrestore(&chip->reg_lock, flags);
+				id = 1;
+				break;
+			}
+			spin_unlock_irqrestore(&chip->reg_lock, flags);
+		}
+	}
+	if (id != 1)
+		return -ENODEV;	/* no valid device found */
+	if (chip->hardware == AD1848_HW_DETECT) {
+		if (ad1847) {
+			chip->hardware = AD1848_HW_AD1847;
+		} else {
+			chip->hardware = AD1848_HW_AD1848;
+			rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
+			if (rev & 0x80) {
+				chip->hardware = AD1848_HW_CS4248;
+			} else if ((rev & 0x0f) == 0x0a) {
+				snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
+				for (i = 0; i < 16; ++i) {
+					if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
+						chip->hardware = AD1848_HW_CMI8330;
+						break;
+					}
+				}
+				snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
+			}
+		}
+	}
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	inb(AD1848P(chip, STATUS));	/* clear any pendings IRQ */
+	outb(0, AD1848P(chip, STATUS));
+	mb();
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+	chip->image[AD1848_MISC_INFO] = 0x00;
+	chip->image[AD1848_IFACE_CTRL] =
+	    (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
+	ptr = (unsigned char *) &chip->image;
+	snd_ad1848_mce_down(chip);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	for (i = 0; i < 16; i++)	/* ok.. fill all AD1848 registers */
+		snd_ad1848_out(chip, i, *ptr++);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	snd_ad1848_mce_up(chip);
+	snd_ad1848_mce_down(chip);
+	return 0;		/* all things are ok.. */
+}
+
+/*
+
+ */
+
+static snd_pcm_hardware_t snd_ad1848_playback =
+{
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
+				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
+	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
+	.rate_min =		5510,
+	.rate_max =		48000,
+	.channels_min =		1,
+	.channels_max =		2,
+	.buffer_bytes_max =	(128*1024),
+	.period_bytes_min =	64,
+	.period_bytes_max =	(128*1024),
+	.periods_min =		1,
+	.periods_max =		1024,
+	.fifo_size =		0,
+};
+
+static snd_pcm_hardware_t snd_ad1848_capture =
+{
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
+				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
+	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
+	.rate_min =		5510,
+	.rate_max =		48000,
+	.channels_min =		1,
+	.channels_max =		2,
+	.buffer_bytes_max =	(128*1024),
+	.period_bytes_min =	64,
+	.period_bytes_max =	(128*1024),
+	.periods_min =		1,
+	.periods_max =		1024,
+	.fifo_size =		0,
+};
+
+/*
+
+ */
+
+static int snd_ad1848_playback_open(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	int err;
+
+	if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
+		return err;
+	chip->playback_substream = substream;
+	runtime->hw = snd_ad1848_playback;
+	snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
+	snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
+	return 0;
+}
+
+static int snd_ad1848_capture_open(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	int err;
+
+	if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
+		return err;
+	chip->capture_substream = substream;
+	runtime->hw = snd_ad1848_capture;
+	snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
+	snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
+	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
+	return 0;
+}
+
+static int snd_ad1848_playback_close(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+
+	chip->mode &= ~AD1848_MODE_PLAY;
+	chip->playback_substream = NULL;
+	snd_ad1848_close(chip);
+	return 0;
+}
+
+static int snd_ad1848_capture_close(snd_pcm_substream_t * substream)
+{
+	ad1848_t *chip = snd_pcm_substream_chip(substream);
+
+	chip->mode &= ~AD1848_MODE_CAPTURE;
+	chip->capture_substream = NULL;
+	snd_ad1848_close(chip);
+	return 0;
+}
+
+static int snd_ad1848_free(ad1848_t *chip)
+{
+	if (chip->res_port) {
+		release_resource(chip->res_port);
+		kfree_nocheck(chip->res_port);
+	}
+	if (chip->irq >= 0)
+		free_irq(chip->irq, (void *) chip);
+	if (chip->dma >= 0) {
+		snd_dma_disable(chip->dma);
+		free_dma(chip->dma);
+	}
+	kfree(chip);
+	return 0;
+}
+
+static int snd_ad1848_dev_free(snd_device_t *device)
+{
+	ad1848_t *chip = device->device_data;
+	return snd_ad1848_free(chip);
+}
+
+static const char *snd_ad1848_chip_id(ad1848_t *chip)
+{
+	switch (chip->hardware) {
+	case AD1848_HW_AD1847:	return "AD1847";
+	case AD1848_HW_AD1848:	return "AD1848";
+	case AD1848_HW_CS4248:	return "CS4248";
+	case AD1848_HW_CMI8330: return "CMI8330/C3D";
+	default:		return "???";
+	}
+}
+
+int snd_ad1848_create(snd_card_t * card,
+		      unsigned long port,
+		      int irq, int dma,
+		      unsigned short hardware,
+		      ad1848_t ** rchip)
+{
+	static snd_device_ops_t ops = {
+		.dev_free =	snd_ad1848_dev_free,
+	};
+	ad1848_t *chip;
+	int err;
+
+	*rchip = NULL;
+	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL)
+		return -ENOMEM;
+	spin_lock_init(&chip->reg_lock);
+	init_MUTEX(&chip->open_mutex);
+	chip->card = card;
+	chip->port = port;
+	chip->irq = -1;
+	chip->dma = -1;
+	chip->hardware = hardware;
+	memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
+	
+	if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
+		snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
+		snd_ad1848_free(chip);
+		return -EBUSY;
+	}
+	if (request_irq(irq, snd_ad1848_interrupt, SA_INTERRUPT, "AD1848", (void *) chip)) {
+		snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
+		snd_ad1848_free(chip);
+		return -EBUSY;
+	}
+	chip->irq = irq;
+	if (request_dma(dma, "AD1848")) {
+		snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
+		snd_ad1848_free(chip);
+		return -EBUSY;
+	}
+	chip->dma = dma;
+
+	if (hardware == AD1848_HW_THINKPAD) {
+		chip->thinkpad_flag = 1;
+		chip->hardware = AD1848_HW_DETECT; /* reset */
+		snd_ad1848_thinkpad_twiddle(chip, 1);
+		snd_card_set_isa_pm_callback(card, snd_ad1848_suspend, snd_ad1848_resume, chip);
+	}
+
+	if (snd_ad1848_probe(chip) < 0) {
+		snd_ad1848_free(chip);
+		return -ENODEV;
+	}
+
+	/* Register device */
+	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+		snd_ad1848_free(chip);
+		return err;
+	}
+
+	*rchip = chip;
+	return 0;
+}
+
+static snd_pcm_ops_t snd_ad1848_playback_ops = {
+	.open =		snd_ad1848_playback_open,
+	.close =	snd_ad1848_playback_close,
+	.ioctl =	snd_ad1848_ioctl,
+	.hw_params =	snd_ad1848_playback_hw_params,
+	.hw_free =	snd_ad1848_playback_hw_free,
+	.prepare =	snd_ad1848_playback_prepare,
+	.trigger =	snd_ad1848_playback_trigger,
+	.pointer =	snd_ad1848_playback_pointer,
+};
+
+static snd_pcm_ops_t snd_ad1848_capture_ops = {
+	.open =		snd_ad1848_capture_open,
+	.close =	snd_ad1848_capture_close,
+	.ioctl =	snd_ad1848_ioctl,
+	.hw_params =	snd_ad1848_capture_hw_params,
+	.hw_free =	snd_ad1848_capture_hw_free,
+	.prepare =	snd_ad1848_capture_prepare,
+	.trigger =	snd_ad1848_capture_trigger,
+	.pointer =	snd_ad1848_capture_pointer,
+};
+
+static void snd_ad1848_pcm_free(snd_pcm_t *pcm)
+{
+	ad1848_t *chip = pcm->private_data;
+	chip->pcm = NULL;
+	snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+int snd_ad1848_pcm(ad1848_t *chip, int device, snd_pcm_t **rpcm)
+{
+	snd_pcm_t *pcm;
+	int err;
+
+	if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
+		return err;
+
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
+
+	pcm->private_free = snd_ad1848_pcm_free;
+	pcm->private_data = chip;
+	pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
+	strcpy(pcm->name, snd_ad1848_chip_id(chip));
+
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+					      snd_dma_isa_data(),
+					      64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
+
+	chip->pcm = pcm;
+	if (rpcm)
+		*rpcm = pcm;
+	return 0;
+}
+
+const snd_pcm_ops_t *snd_ad1848_get_pcm_ops(int direction)
+{
+	return direction == SNDRV_PCM_STREAM_PLAYBACK ?
+		&snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
+}
+
+/*
+ *  MIXER part
+ */
+
+static int snd_ad1848_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	static char *texts[4] = {
+		"Line", "Aux", "Mic", "Mix"
+	};
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 2;
+	uinfo->value.enumerated.items = 4;
+	if (uinfo->value.enumerated.item > 3)
+		uinfo->value.enumerated.item = 3;
+	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+	return 0;
+}
+
+static int snd_ad1848_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	ad1848_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
+	ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+static int snd_ad1848_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	ad1848_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	unsigned short left, right;
+	int change;
+	
+	if (ucontrol->value.enumerated.item[0] > 3 ||
+	    ucontrol->value.enumerated.item[1] > 3)
+		return -EINVAL;
+	left = ucontrol->value.enumerated.item[0] << 6;
+	right = ucontrol->value.enumerated.item[1] << 6;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
+	right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
+	change = left != chip->image[AD1848_LEFT_INPUT] ||
+	         right != chip->image[AD1848_RIGHT_INPUT];
+	snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
+	snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return change;
+}
+
+static int snd_ad1848_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	int mask = (kcontrol->private_value >> 16) & 0xff;
+
+	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = mask;
+	return 0;
+}
+
+static int snd_ad1848_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	ad1848_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int reg = kcontrol->private_value & 0xff;
+	int shift = (kcontrol->private_value >> 8) & 0xff;
+	int mask = (kcontrol->private_value >> 16) & 0xff;
+	int invert = (kcontrol->private_value >> 24) & 0xff;
+	
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	if (invert)
+		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
+	return 0;
+}
+
+static int snd_ad1848_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	ad1848_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int reg = kcontrol->private_value & 0xff;
+	int shift = (kcontrol->private_value >> 8) & 0xff;
+	int mask = (kcontrol->private_value >> 16) & 0xff;
+	int invert = (kcontrol->private_value >> 24) & 0xff;
+	int change;
+	unsigned short val;
+	
+	val = (ucontrol->value.integer.value[0] & mask);
+	if (invert)
+		val = mask - val;
+	val <<= shift;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	val = (chip->image[reg] & ~(mask << shift)) | val;
+	change = val != chip->image[reg];
+	snd_ad1848_out(chip, reg, val);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return change;
+}
+
+static int snd_ad1848_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	int mask = (kcontrol->private_value >> 24) & 0xff;
+
+	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = mask;
+	return 0;
+}
+
+static int snd_ad1848_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	ad1848_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int left_reg = kcontrol->private_value & 0xff;
+	int right_reg = (kcontrol->private_value >> 8) & 0xff;
+	int shift_left = (kcontrol->private_value >> 16) & 0x07;
+	int shift_right = (kcontrol->private_value >> 19) & 0x07;
+	int mask = (kcontrol->private_value >> 24) & 0xff;
+	int invert = (kcontrol->private_value >> 22) & 1;
+	
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
+	ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	if (invert) {
+		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
+		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
+	}
+	return 0;
+}
+
+static int snd_ad1848_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	ad1848_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int left_reg = kcontrol->private_value & 0xff;
+	int right_reg = (kcontrol->private_value >> 8) & 0xff;
+	int shift_left = (kcontrol->private_value >> 16) & 0x07;
+	int shift_right = (kcontrol->private_value >> 19) & 0x07;
+	int mask = (kcontrol->private_value >> 24) & 0xff;
+	int invert = (kcontrol->private_value >> 22) & 1;
+	int change;
+	unsigned short val1, val2;
+	
+	val1 = ucontrol->value.integer.value[0] & mask;
+	val2 = ucontrol->value.integer.value[1] & mask;
+	if (invert) {
+		val1 = mask - val1;
+		val2 = mask - val2;
+	}
+	val1 <<= shift_left;
+	val2 <<= shift_right;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	if (left_reg != right_reg) {
+		val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
+		val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
+		change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
+		snd_ad1848_out(chip, left_reg, val1);
+		snd_ad1848_out(chip, right_reg, val2);
+	} else {
+		val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
+		change = val1 != chip->image[left_reg];
+		snd_ad1848_out(chip, left_reg, val1);		
+	}
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return change;
+}
+
+/*
+ */
+int snd_ad1848_add_ctl(ad1848_t *chip, const char *name, int index, int type, unsigned long value)
+{
+	static snd_kcontrol_new_t newctls[] = {
+		[AD1848_MIX_SINGLE] = {
+			.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+			.info = snd_ad1848_info_single,
+			.get = snd_ad1848_get_single,
+			.put = snd_ad1848_put_single,
+		},
+		[AD1848_MIX_DOUBLE] = {
+			.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+			.info = snd_ad1848_info_double,
+			.get = snd_ad1848_get_double,
+			.put = snd_ad1848_put_double,
+		},
+		[AD1848_MIX_CAPTURE] = {
+			.info = snd_ad1848_info_mux,
+			.get = snd_ad1848_get_mux,
+			.put = snd_ad1848_put_mux,
+		},
+	};
+	snd_kcontrol_t *ctl;
+	int err;
+
+	ctl = snd_ctl_new1(&newctls[type], chip);
+	if (! ctl)
+		return -ENOMEM;
+	strlcpy(ctl->id.name, name, sizeof(ctl->id.name));
+	ctl->id.index = index;
+	ctl->private_value = value;
+	if ((err = snd_ctl_add(chip->card, ctl)) < 0) {
+		snd_ctl_free_one(ctl);
+		return err;
+	}
+	return 0;
+}
+
+
+static struct ad1848_mix_elem snd_ad1848_controls[] = {
+AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
+AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
+AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
+AD1848_DOUBLE("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
+AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
+AD1848_DOUBLE("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
+AD1848_DOUBLE("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0),
+{
+	.name = "Capture Source",
+	.type = AD1848_MIX_CAPTURE,
+},
+AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
+AD1848_SINGLE("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0)
+};
+                                        
+int snd_ad1848_mixer(ad1848_t *chip)
+{
+	snd_card_t *card;
+	snd_pcm_t *pcm;
+	unsigned int idx;
+	int err;
+
+	snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
+
+	pcm = chip->pcm;
+	card = chip->card;
+
+	strcpy(card->mixername, pcm->name);
+
+	for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
+		if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
+			return err;
+
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_ad1848_out);
+EXPORT_SYMBOL(snd_ad1848_create);
+EXPORT_SYMBOL(snd_ad1848_pcm);
+EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
+EXPORT_SYMBOL(snd_ad1848_mixer);
+EXPORT_SYMBOL(snd_ad1848_add_ctl);
+
+/*
+ *  INIT part
+ */
+
+static int __init alsa_ad1848_init(void)
+{
+	return 0;
+}
+
+static void __exit alsa_ad1848_exit(void)
+{
+}
+
+module_init(alsa_ad1848_init)
+module_exit(alsa_ad1848_exit)