Linux-2.6.12-rc2v2.6.12-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, 1277 insertions, 0 deletions

diff --git a/sound/isa/es1688/Makefile b/sound/isa/es1688/Makefile
new file mode 100644
index 0000000..501c8bf
--- /dev/null
+++ b/sound/isa/es1688/Makefile
@@ -0,0 +1,11 @@
+#
+# Makefile for ALSA
+# Copyright (c) 2001 by Jaroslav Kysela <perex@suse.cz>
+#
+
+snd-es1688-lib-objs := es1688_lib.o
+snd-es1688-objs := es1688.o
+
+# Toplevel Module Dependency
+obj-$(CONFIG_SND_ES1688) += snd-es1688.o snd-es1688-lib.o
+obj-$(CONFIG_SND_GUSEXTREME) += snd-es1688-lib.o
diff --git a/sound/isa/es1688/es1688.c b/sound/isa/es1688/es1688.c
new file mode 100644
index 0000000..c5eaec0
--- /dev/null
+++ b/sound/isa/es1688/es1688.c
@@ -0,0 +1,204 @@
+/*
+ *  Driver for generic ESS AudioDrive ESx688 soundcards
+ *  Copyright (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 <asm/dma.h>
+#include <linux/init.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/es1688.h>
+#include <sound/mpu401.h>
+#include <sound/opl3.h>
+#define SNDRV_LEGACY_AUTO_PROBE
+#define SNDRV_LEGACY_FIND_FREE_IRQ
+#define SNDRV_LEGACY_FIND_FREE_DMA
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("ESS ESx688 AudioDrive");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{ESS,ES688 PnP AudioDrive,pnp:ESS0100},"
+	        "{ESS,ES1688 PnP AudioDrive,pnp:ESS0102},"
+	        "{ESS,ES688 AudioDrive,pnp:ESS6881},"
+	        "{ESS,ES1688 AudioDrive,pnp:ESS1681}}");
+
+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;	/* 0x220,0x240,0x260 */
+static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
+static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
+static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
+static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for ESx688 soundcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for ESx688 soundcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable ESx688 soundcard.");
+module_param_array(port, long, NULL, 0444);
+MODULE_PARM_DESC(port, "Port # for ESx688 driver.");
+module_param_array(mpu_port, long, NULL, 0444);
+MODULE_PARM_DESC(mpu_port, "MPU-401 port # for ESx688 driver.");
+module_param_array(irq, int, NULL, 0444);
+MODULE_PARM_DESC(irq, "IRQ # for ESx688 driver.");
+module_param_array(mpu_irq, int, NULL, 0444);
+MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for ESx688 driver.");
+module_param_array(dma8, int, NULL, 0444);
+MODULE_PARM_DESC(dma8, "8-bit DMA # for ESx688 driver.");
+
+static snd_card_t *snd_audiodrive_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+
+
+static int __init snd_audiodrive_probe(int dev)
+{
+	static int possible_irqs[] = {5, 9, 10, 7, -1};
+	static int possible_dmas[] = {1, 3, 0, -1};
+	int xirq, xdma, xmpu_irq;
+	snd_card_t *card;
+	es1688_t *chip;
+	opl3_t *opl3;
+	snd_pcm_t *pcm;
+	int err;
+
+	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+	if (card == NULL)
+		return -ENOMEM;
+
+	xirq = irq[dev];
+	if (xirq == SNDRV_AUTO_IRQ) {
+		if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
+			snd_card_free(card);
+			snd_printk("unable to find a free IRQ\n");
+			return -EBUSY;
+		}
+	}
+	xmpu_irq = mpu_irq[dev];
+	xdma = dma8[dev];
+	if (xdma == SNDRV_AUTO_DMA) {
+		if ((xdma = snd_legacy_find_free_dma(possible_dmas)) < 0) {
+			snd_card_free(card);
+			snd_printk("unable to find a free DMA\n");
+			return -EBUSY;
+		}
+	}
+
+	if ((err = snd_es1688_create(card, port[dev], mpu_port[dev],
+				     xirq, xmpu_irq, xdma,
+				     ES1688_HW_AUTO, &chip)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	if ((err = snd_es1688_pcm(chip, 0, &pcm)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	if ((err = snd_es1688_mixer(chip)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+
+	strcpy(card->driver, "ES1688");
+	strcpy(card->shortname, pcm->name);
+	sprintf(card->longname, "%s at 0x%lx, irq %i, dma %i", pcm->name, chip->port, xirq, xdma);
+
+	if ((snd_opl3_create(card, chip->port, chip->port + 2, OPL3_HW_OPL3, 0, &opl3)) < 0) {
+		printk(KERN_ERR "es1688: opl3 not detected at 0x%lx\n", chip->port);
+	} else {
+		if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
+			snd_card_free(card);
+			return err;
+		}
+	}
+
+	if (xmpu_irq >= 0 && xmpu_irq != SNDRV_AUTO_IRQ && chip->mpu_port > 0) {
+		if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES1688,
+					       chip->mpu_port, 0,
+					       xmpu_irq,
+					       SA_INTERRUPT,
+					       NULL)) < 0) {
+			snd_card_free(card);
+			return err;
+		}
+	}
+	if ((err = snd_card_register(card)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	snd_audiodrive_cards[dev] = card;
+	return 0;
+
+}
+
+static int __init snd_audiodrive_legacy_auto_probe(unsigned long xport)
+{
+	static int dev;
+	int res;
+	
+	for ( ; dev < SNDRV_CARDS; dev++) {
+		if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
+			continue;
+		port[dev] = xport;
+		res = snd_audiodrive_probe(dev);
+		if (res < 0)
+			port[dev] = SNDRV_AUTO_PORT;
+		return res;
+	}
+	return -ENODEV;
+}
+
+static int __init alsa_card_es1688_init(void)
+{
+	static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
+	int dev, cards = 0, i;
+
+	for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
+		if (port[dev] == SNDRV_AUTO_PORT)
+			continue;
+		if (snd_audiodrive_probe(dev) >= 0)
+			cards++;
+	}
+	i = snd_legacy_auto_probe(possible_ports, snd_audiodrive_legacy_auto_probe);
+	if (i > 0)
+		cards += i;
+
+	if (!cards) {
+#ifdef MODULE
+		printk(KERN_ERR "ESS AudioDrive ES1688 soundcard not found or device busy\n");
+#endif
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static void __exit alsa_card_es1688_exit(void)
+{
+	int idx;
+
+	for (idx = 0; idx < SNDRV_CARDS; idx++)
+		snd_card_free(snd_audiodrive_cards[idx]);
+}
+
+module_init(alsa_card_es1688_init)
+module_exit(alsa_card_es1688_exit)
diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
new file mode 100644
index 0000000..17f68d0
--- /dev/null
+++ b/sound/isa/es1688/es1688_lib.c
@@ -0,0 +1,1062 @@
+/*
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *  Routines for control of ESS ES1688/688/488 chip
+ *
+ *
+ *   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/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <sound/core.h>
+#include <sound/es1688.h>
+#include <sound/initval.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("ESS ESx688 lowlevel module");
+MODULE_LICENSE("GPL");
+
+static int snd_es1688_dsp_command(es1688_t *chip, unsigned char val)
+{
+	int i;
+
+	for (i = 10000; i; i--)
+		if ((inb(ES1688P(chip, STATUS)) & 0x80) == 0) {
+			outb(val, ES1688P(chip, COMMAND));
+			return 1;
+		}
+#ifdef CONFIG_SND_DEBUG
+	printk("snd_es1688_dsp_command: timeout (0x%x)\n", val);
+#endif
+	return 0;
+}
+
+static int snd_es1688_dsp_get_byte(es1688_t *chip)
+{
+	int i;
+
+	for (i = 1000; i; i--)
+		if (inb(ES1688P(chip, DATA_AVAIL)) & 0x80)
+			return inb(ES1688P(chip, READ));
+	snd_printd("es1688 get byte failed: 0x%lx = 0x%x!!!\n", ES1688P(chip, DATA_AVAIL), inb(ES1688P(chip, DATA_AVAIL)));
+	return -ENODEV;
+}
+
+static int snd_es1688_write(es1688_t *chip,
+			    unsigned char reg, unsigned char data)
+{
+	if (!snd_es1688_dsp_command(chip, reg))
+		return 0;
+	return snd_es1688_dsp_command(chip, data);
+}
+
+static int snd_es1688_read(es1688_t *chip, unsigned char reg)
+{
+	/* Read a byte from an extended mode register of ES1688 */
+	if (!snd_es1688_dsp_command(chip, 0xc0))
+		return -1;
+	if (!snd_es1688_dsp_command(chip, reg))
+		return -1;
+	return snd_es1688_dsp_get_byte(chip);
+}
+
+void snd_es1688_mixer_write(es1688_t *chip,
+			    unsigned char reg, unsigned char data)
+{
+	outb(reg, ES1688P(chip, MIXER_ADDR));
+	udelay(10);
+	outb(data, ES1688P(chip, MIXER_DATA));
+	udelay(10);
+}
+
+static unsigned char snd_es1688_mixer_read(es1688_t *chip, unsigned char reg)
+{
+	unsigned char result;
+
+	outb(reg, ES1688P(chip, MIXER_ADDR));
+	udelay(10);
+	result = inb(ES1688P(chip, MIXER_DATA));
+	udelay(10);
+	return result;
+}
+
+static int snd_es1688_reset(es1688_t *chip)
+{
+	int i;
+
+	outb(3, ES1688P(chip, RESET));		/* valid only for ESS chips, SB -> 1 */
+	udelay(10);
+	outb(0, ES1688P(chip, RESET));
+	udelay(30);
+	for (i = 0; i < 1000 && !(inb(ES1688P(chip, DATA_AVAIL)) & 0x80); i++);
+	if (inb(ES1688P(chip, READ)) != 0xaa) {
+		snd_printd("ess_reset at 0x%lx: failed!!!\n", chip->port);
+		return -ENODEV;
+	}
+	snd_es1688_dsp_command(chip, 0xc6);	/* enable extended mode */
+	return 0;
+}
+
+static int snd_es1688_probe(es1688_t *chip)
+{
+	unsigned long flags;
+	unsigned short major, minor, hw;
+	int i;
+
+	/*
+	 *  initialization sequence
+	 */
+
+	spin_lock_irqsave(&chip->reg_lock, flags);	/* Some ESS1688 cards need this */
+	inb(ES1688P(chip, ENABLE1));	/* ENABLE1 */
+	inb(ES1688P(chip, ENABLE1));	/* ENABLE1 */
+	inb(ES1688P(chip, ENABLE1));	/* ENABLE1 */
+	inb(ES1688P(chip, ENABLE2));	/* ENABLE2 */
+	inb(ES1688P(chip, ENABLE1));	/* ENABLE1 */
+	inb(ES1688P(chip, ENABLE2));	/* ENABLE2 */
+	inb(ES1688P(chip, ENABLE1));	/* ENABLE1 */
+	inb(ES1688P(chip, ENABLE1));	/* ENABLE1 */
+	inb(ES1688P(chip, ENABLE2));	/* ENABLE2 */
+	inb(ES1688P(chip, ENABLE1));	/* ENABLE1 */
+	inb(ES1688P(chip, ENABLE0));	/* ENABLE0 */
+
+	if (snd_es1688_reset(chip) < 0) {
+		snd_printdd("ESS: [0x%lx] reset failed... 0x%x\n", chip->port, inb(ES1688P(chip, READ)));
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		return -ENODEV;
+	}
+	snd_es1688_dsp_command(chip, 0xe7);	/* return identification */
+
+	for (i = 1000, major = minor = 0; i; i--) {
+		if (inb(ES1688P(chip, DATA_AVAIL)) & 0x80) {
+			if (major == 0) {
+				major = inb(ES1688P(chip, READ));
+			} else {
+				minor = inb(ES1688P(chip, READ));
+			}
+		}
+	}
+
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+	snd_printdd("ESS: [0x%lx] found.. major = 0x%x, minor = 0x%x\n", chip->port, major, minor);
+
+	chip->version = (major << 8) | minor;
+	if (!chip->version)
+		return -ENODEV;	/* probably SB */
+
+	hw = ES1688_HW_AUTO;
+	switch (chip->version & 0xfff0) {
+	case 0x4880:
+		snd_printk("[0x%lx] ESS: AudioDrive ES488 detected, but driver is in another place\n", chip->port);
+		return -ENODEV;
+	case 0x6880:
+		hw = (chip->version & 0x0f) >= 8 ? ES1688_HW_1688 : ES1688_HW_688;
+		break;
+	default:
+		snd_printk("[0x%lx] ESS: unknown AudioDrive chip with version 0x%x (Jazz16 soundcard?)\n", chip->port, chip->version);
+		return -ENODEV;
+	}
+
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_write(chip, 0xb1, 0x10);	/* disable IRQ */
+	snd_es1688_write(chip, 0xb2, 0x00);	/* disable DMA */
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+	/* enable joystick, but disable OPL3 */
+	spin_lock_irqsave(&chip->mixer_lock, flags);
+	snd_es1688_mixer_write(chip, 0x40, 0x01);
+	spin_unlock_irqrestore(&chip->mixer_lock, flags);
+
+	return 0;
+}
+
+static int snd_es1688_init(es1688_t * chip, int enable)
+{
+	static int irqs[16] = {-1, -1, 0, -1, -1, 1, -1, 2, -1, 0, 3, -1, -1, -1, -1, -1};
+	unsigned long flags;
+	int cfg, irq_bits, dma, dma_bits, tmp, tmp1;
+
+	/* ok.. setup MPU-401 port and joystick and OPL3 */
+	cfg = 0x01;		/* enable joystick, but disable OPL3 */
+	if (enable && chip->mpu_port >= 0x300 && chip->mpu_irq > 0 && chip->hardware != ES1688_HW_688) {
+		tmp = (chip->mpu_port & 0x0f0) >> 4;
+		if (tmp <= 3) {
+			switch (chip->mpu_irq) {
+			case 9:
+				tmp1 = 4;
+				break;
+			case 5:
+				tmp1 = 5;
+				break;
+			case 7:
+				tmp1 = 6;
+				break;
+			case 10:
+				tmp1 = 7;
+				break;
+			default:
+				tmp1 = 0;
+			}
+			if (tmp1) {
+				cfg |= (tmp << 3) | (tmp1 << 5);
+			}
+		}
+	}
+#if 0
+	snd_printk("mpu cfg = 0x%x\n", cfg);
+#endif
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_mixer_write(chip, 0x40, cfg);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	/* --- */
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_read(chip, 0xb1);
+	snd_es1688_read(chip, 0xb2);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	if (enable) {
+		cfg = 0xf0;	/* enable only DMA counter interrupt */
+		irq_bits = irqs[chip->irq & 0x0f];
+		if (irq_bits < 0) {
+			snd_printk("[0x%lx] ESS: bad IRQ %d for ES1688 chip!!\n", chip->port, chip->irq);
+#if 0
+			irq_bits = 0;
+			cfg = 0x10;
+#endif
+			return -EINVAL;
+		}
+		spin_lock_irqsave(&chip->reg_lock, flags);
+		snd_es1688_write(chip, 0xb1, cfg | (irq_bits << 2));
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+		cfg = 0xf0;	/* extended mode DMA enable */
+		dma = chip->dma8;
+		if (dma > 3 || dma == 2) {
+			snd_printk("[0x%lx] ESS: bad DMA channel %d for ES1688 chip!!\n", chip->port, dma);
+#if 0
+			dma_bits = 0;
+			cfg = 0x00;	/* disable all DMA */
+#endif
+			return -EINVAL;
+		} else {
+			dma_bits = dma;
+			if (dma != 3)
+				dma_bits++;
+		}
+		spin_lock_irqsave(&chip->reg_lock, flags);
+		snd_es1688_write(chip, 0xb2, cfg | (dma_bits << 2));
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+	} else {
+		spin_lock_irqsave(&chip->reg_lock, flags);
+		snd_es1688_write(chip, 0xb1, 0x10);	/* disable IRQ */
+		snd_es1688_write(chip, 0xb2, 0x00);	/* disable DMA */
+		spin_unlock_irqrestore(&chip->reg_lock, flags);
+	}
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_read(chip, 0xb1);
+	snd_es1688_read(chip, 0xb2);
+	snd_es1688_reset(chip);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+/*
+
+ */
+
+static ratnum_t clocks[2] = {
+	{
+		.num = 795444,
+		.den_min = 1,
+		.den_max = 128,
+		.den_step = 1,
+	},
+	{
+		.num = 397722,
+		.den_min = 1,
+		.den_max = 128,
+		.den_step = 1,
+	}
+};
+
+static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks  = {
+	.nrats = 2,
+	.rats = clocks,
+};
+
+static void snd_es1688_set_rate(es1688_t *chip, snd_pcm_substream_t *substream)
+{
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	unsigned int bits, divider;
+
+	if (runtime->rate_num == clocks[0].num)
+		bits = 256 - runtime->rate_den;
+	else
+		bits = 128 - runtime->rate_den;
+	/* set filter register */
+	divider = 256 - 7160000*20/(8*82*runtime->rate);
+	/* write result to hardware */
+	snd_es1688_write(chip, 0xa1, bits);
+	snd_es1688_write(chip, 0xa2, divider);
+}
+
+static int snd_es1688_ioctl(snd_pcm_substream_t * substream,
+			    unsigned int cmd, void *arg)
+{
+	return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
+static int snd_es1688_trigger(es1688_t *chip, int cmd, unsigned char value)
+{
+	int val;
+
+	if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+		value = 0x00;
+	} else if (cmd != SNDRV_PCM_TRIGGER_START) {
+		return -EINVAL;
+	}
+	spin_lock(&chip->reg_lock);
+	chip->trigger_value = value;
+	val = snd_es1688_read(chip, 0xb8);
+	if ((val < 0) || (val & 0x0f) == value) {
+		spin_unlock(&chip->reg_lock);
+		return -EINVAL;	/* something is wrong */
+	}
+#if 0
+	printk("trigger: val = 0x%x, value = 0x%x\n", val, value);
+	printk("trigger: pointer = 0x%x\n", snd_dma_pointer(chip->dma8, chip->dma_size));
+#endif
+	snd_es1688_write(chip, 0xb8, (val & 0xf0) | value);
+	spin_unlock(&chip->reg_lock);
+	return 0;
+}
+
+static int snd_es1688_hw_params(snd_pcm_substream_t * substream,
+				snd_pcm_hw_params_t * hw_params)
+{
+	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+}
+
+static int snd_es1688_hw_free(snd_pcm_substream_t * substream)
+{
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_es1688_playback_prepare(snd_pcm_substream_t * substream)
+{
+	unsigned long flags;
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+	chip->dma_size = size;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_reset(chip);
+	snd_es1688_set_rate(chip, substream);
+	snd_es1688_write(chip, 0xb8, 4);	/* auto init DMA mode */
+	snd_es1688_write(chip, 0xa8, (snd_es1688_read(chip, 0xa8) & ~0x03) | (3 - runtime->channels));
+	snd_es1688_write(chip, 0xb9, 2);	/* demand mode (4 bytes/request) */
+	if (runtime->channels == 1) {
+		if (snd_pcm_format_width(runtime->format) == 8) {
+			/* 8. bit mono */
+			snd_es1688_write(chip, 0xb6, 0x80);
+			snd_es1688_write(chip, 0xb7, 0x51);
+			snd_es1688_write(chip, 0xb7, 0xd0);
+		} else {
+			/* 16. bit mono */
+			snd_es1688_write(chip, 0xb6, 0x00);
+			snd_es1688_write(chip, 0xb7, 0x71);
+			snd_es1688_write(chip, 0xb7, 0xf4);
+		}
+	} else {
+		if (snd_pcm_format_width(runtime->format) == 8) {
+			/* 8. bit stereo */
+			snd_es1688_write(chip, 0xb6, 0x80);
+			snd_es1688_write(chip, 0xb7, 0x51);
+			snd_es1688_write(chip, 0xb7, 0x98);
+		} else {
+			/* 16. bit stereo */
+			snd_es1688_write(chip, 0xb6, 0x00);
+			snd_es1688_write(chip, 0xb7, 0x71);
+			snd_es1688_write(chip, 0xb7, 0xbc);
+		}
+	}
+	snd_es1688_write(chip, 0xb1, (snd_es1688_read(chip, 0xb1) & 0x0f) | 0x50);
+	snd_es1688_write(chip, 0xb2, (snd_es1688_read(chip, 0xb2) & 0x0f) | 0x50);
+	snd_es1688_dsp_command(chip, ES1688_DSP_CMD_SPKON);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	/* --- */
+	count = -count;
+	snd_dma_program(chip->dma8, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_write(chip, 0xa4, (unsigned char) count);
+	snd_es1688_write(chip, 0xa5, (unsigned char) (count >> 8));
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+static int snd_es1688_playback_trigger(snd_pcm_substream_t * substream,
+				       int cmd)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	return snd_es1688_trigger(chip, cmd, 0x05);
+}
+
+static int snd_es1688_capture_prepare(snd_pcm_substream_t * substream)
+{
+	unsigned long flags;
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+	chip->dma_size = size;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_reset(chip);
+	snd_es1688_set_rate(chip, substream);
+	snd_es1688_dsp_command(chip, ES1688_DSP_CMD_SPKOFF);
+	snd_es1688_write(chip, 0xb8, 0x0e);	/* auto init DMA mode */
+	snd_es1688_write(chip, 0xa8, (snd_es1688_read(chip, 0xa8) & ~0x03) | (3 - runtime->channels));
+	snd_es1688_write(chip, 0xb9, 2);	/* demand mode (4 bytes/request) */
+	if (runtime->channels == 1) {
+		if (snd_pcm_format_width(runtime->format) == 8) {
+			/* 8. bit mono */
+			snd_es1688_write(chip, 0xb7, 0x51);
+			snd_es1688_write(chip, 0xb7, 0xd0);
+		} else {
+			/* 16. bit mono */
+			snd_es1688_write(chip, 0xb7, 0x71);
+			snd_es1688_write(chip, 0xb7, 0xf4);
+		}
+	} else {
+		if (snd_pcm_format_width(runtime->format) == 8) {
+			/* 8. bit stereo */
+			snd_es1688_write(chip, 0xb7, 0x51);
+			snd_es1688_write(chip, 0xb7, 0x98);
+		} else {
+			/* 16. bit stereo */
+			snd_es1688_write(chip, 0xb7, 0x71);
+			snd_es1688_write(chip, 0xb7, 0xbc);
+		}
+	}
+	snd_es1688_write(chip, 0xb1, (snd_es1688_read(chip, 0xb1) & 0x0f) | 0x50);
+	snd_es1688_write(chip, 0xb2, (snd_es1688_read(chip, 0xb2) & 0x0f) | 0x50);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	/* --- */
+	count = -count;
+	snd_dma_program(chip->dma8, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_es1688_write(chip, 0xa4, (unsigned char) count);
+	snd_es1688_write(chip, 0xa5, (unsigned char) (count >> 8));
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+static int snd_es1688_capture_trigger(snd_pcm_substream_t * substream,
+				      int cmd)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	return snd_es1688_trigger(chip, cmd, 0x0f);
+}
+
+static irqreturn_t snd_es1688_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	es1688_t *chip = dev_id;
+
+	if (chip->trigger_value == 0x05)	/* ok.. playback is active */
+		snd_pcm_period_elapsed(chip->playback_substream);
+	if (chip->trigger_value == 0x0f)	/* ok.. capture is active */
+		snd_pcm_period_elapsed(chip->capture_substream);
+
+	inb(ES1688P(chip, DATA_AVAIL));	/* ack interrupt */
+	return IRQ_HANDLED;
+}
+
+static snd_pcm_uframes_t snd_es1688_playback_pointer(snd_pcm_substream_t * substream)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	size_t ptr;
+	
+	if (chip->trigger_value != 0x05)
+		return 0;
+	ptr = snd_dma_pointer(chip->dma8, chip->dma_size);
+	return bytes_to_frames(substream->runtime, ptr);
+}
+
+static snd_pcm_uframes_t snd_es1688_capture_pointer(snd_pcm_substream_t * substream)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	size_t ptr;
+	
+	if (chip->trigger_value != 0x0f)
+		return 0;
+	ptr = snd_dma_pointer(chip->dma8, chip->dma_size);
+	return bytes_to_frames(substream->runtime, ptr);
+}
+
+/*
+
+ */
+
+static snd_pcm_hardware_t snd_es1688_playback =
+{
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
+	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+	.rate_min =		4000,
+	.rate_max =		48000,
+	.channels_min =		1,
+	.channels_max =		2,
+	.buffer_bytes_max =	65536,
+	.period_bytes_min =	64,
+	.period_bytes_max =	65536,
+	.periods_min =		1,
+	.periods_max =		1024,
+	.fifo_size =		0,
+};
+
+static snd_pcm_hardware_t snd_es1688_capture =
+{
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
+	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+	.rate_min =		4000,
+	.rate_max =		48000,
+	.channels_min =		1,
+	.channels_max =		2,
+	.buffer_bytes_max =	65536,
+	.period_bytes_min =	64,
+	.period_bytes_max =	65536,
+	.periods_min =		1,
+	.periods_max =		1024,
+	.fifo_size =		0,
+};
+
+/*
+
+ */
+
+static int snd_es1688_playback_open(snd_pcm_substream_t * substream)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+
+	if (chip->capture_substream != NULL)
+		return -EAGAIN;
+	chip->playback_substream = substream;
+	runtime->hw = snd_es1688_playback;
+	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+				      &hw_constraints_clocks);
+	return 0;
+}
+
+static int snd_es1688_capture_open(snd_pcm_substream_t * substream)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+
+	if (chip->playback_substream != NULL)
+		return -EAGAIN;
+	chip->capture_substream = substream;
+	runtime->hw = snd_es1688_capture;
+	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+				      &hw_constraints_clocks);
+	return 0;
+}
+
+static int snd_es1688_playback_close(snd_pcm_substream_t * substream)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+
+	chip->playback_substream = NULL;
+	return 0;
+}
+
+static int snd_es1688_capture_close(snd_pcm_substream_t * substream)
+{
+	es1688_t *chip = snd_pcm_substream_chip(substream);
+
+	chip->capture_substream = NULL;
+	return 0;
+}
+
+static int snd_es1688_free(es1688_t *chip)
+{
+	if (chip->res_port) {
+		snd_es1688_init(chip, 0);
+		release_resource(chip->res_port);
+		kfree_nocheck(chip->res_port);
+	}
+	if (chip->irq >= 0)
+		free_irq(chip->irq, (void *) chip);
+	if (chip->dma8 >= 0) {
+		disable_dma(chip->dma8);
+		free_dma(chip->dma8);
+	}
+	kfree(chip);
+	return 0;
+}
+
+static int snd_es1688_dev_free(snd_device_t *device)
+{
+	es1688_t *chip = device->device_data;
+	return snd_es1688_free(chip);
+}
+
+static const char *snd_es1688_chip_id(es1688_t *chip)
+{
+	static char tmp[16];
+	sprintf(tmp, "ES%s688 rev %i", chip->hardware == ES1688_HW_688 ? "" : "1", chip->version & 0x0f);
+	return tmp;
+}
+
+int snd_es1688_create(snd_card_t * card,
+		      unsigned long port,
+		      unsigned long mpu_port,
+		      int irq,
+		      int mpu_irq,
+		      int dma8,
+		      unsigned short hardware,
+		      es1688_t **rchip)
+{
+	static snd_device_ops_t ops = {
+		.dev_free =	snd_es1688_dev_free,
+	};
+                                
+	es1688_t *chip;
+	int err;
+
+	*rchip = NULL;
+	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL)
+		return -ENOMEM;
+	chip->irq = -1;
+	chip->dma8 = -1;
+	
+	if ((chip->res_port = request_region(port + 4, 12, "ES1688")) == NULL) {
+		snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
+		snd_es1688_free(chip);
+		return -EBUSY;
+	}
+	if (request_irq(irq, snd_es1688_interrupt, SA_INTERRUPT, "ES1688", (void *) chip)) {
+		snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
+		snd_es1688_free(chip);
+		return -EBUSY;
+	}
+	chip->irq = irq;
+	if (request_dma(dma8, "ES1688")) {
+		snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
+		snd_es1688_free(chip);
+		return -EBUSY;
+	}
+	chip->dma8 = dma8;
+
+	spin_lock_init(&chip->reg_lock);
+	spin_lock_init(&chip->mixer_lock);
+	chip->card = card;
+	chip->port = port;
+	mpu_port &= ~0x000f;
+	if (mpu_port < 0x300 || mpu_port > 0x330)
+		mpu_port = 0;
+	chip->mpu_port = mpu_port;
+	chip->mpu_irq = mpu_irq;
+	chip->hardware = hardware;
+
+	if ((err = snd_es1688_probe(chip)) < 0) {
+		snd_es1688_free(chip);
+		return err;
+	}
+	if ((err = snd_es1688_init(chip, 1)) < 0) {
+		snd_es1688_free(chip);
+		return err;
+	}
+
+	/* Register device */
+	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+		snd_es1688_free(chip);
+		return err;
+	}
+
+	*rchip = chip;
+	return 0;
+}
+
+static snd_pcm_ops_t snd_es1688_playback_ops = {
+	.open =			snd_es1688_playback_open,
+	.close =		snd_es1688_playback_close,
+	.ioctl =		snd_es1688_ioctl,
+	.hw_params =		snd_es1688_hw_params,
+	.hw_free =		snd_es1688_hw_free,
+	.prepare =		snd_es1688_playback_prepare,
+	.trigger =		snd_es1688_playback_trigger,
+	.pointer =		snd_es1688_playback_pointer,
+};
+
+static snd_pcm_ops_t snd_es1688_capture_ops = {
+	.open =			snd_es1688_capture_open,
+	.close =		snd_es1688_capture_close,
+	.ioctl =		snd_es1688_ioctl,
+	.hw_params =		snd_es1688_hw_params,
+	.hw_free =		snd_es1688_hw_free,
+	.prepare =		snd_es1688_capture_prepare,
+	.trigger =		snd_es1688_capture_trigger,
+	.pointer =		snd_es1688_capture_pointer,
+};
+
+static void snd_es1688_pcm_free(snd_pcm_t *pcm)
+{
+	es1688_t *chip = pcm->private_data;
+	chip->pcm = NULL;
+	snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+int snd_es1688_pcm(es1688_t * chip, int device, snd_pcm_t ** rpcm)
+{
+	snd_pcm_t *pcm;
+	int err;
+
+	if ((err = snd_pcm_new(chip->card, "ESx688", device, 1, 1, &pcm)) < 0)
+		return err;
+
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1688_playback_ops);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1688_capture_ops);
+
+	pcm->private_data = chip;
+	pcm->private_free = snd_es1688_pcm_free;
+	pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
+	sprintf(pcm->name, snd_es1688_chip_id(chip));
+	chip->pcm = pcm;
+
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+					      snd_dma_isa_data(),
+					      64*1024, 64*1024);
+
+	if (rpcm)
+		*rpcm = pcm;
+	return 0;
+}
+
+/*
+ *  MIXER part
+ */
+
+static int snd_es1688_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	static char *texts[9] = {
+		"Mic", "Mic Master", "CD", "AOUT",
+		"Mic1", "Mix", "Line", "Master"
+	};
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = 8;
+	if (uinfo->value.enumerated.item > 7)
+		uinfo->value.enumerated.item = 7;
+	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+	return 0;
+}
+
+static int snd_es1688_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	es1688_t *chip = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.enumerated.item[0] = snd_es1688_mixer_read(chip, ES1688_REC_DEV) & 7;
+	return 0;
+}
+
+static int snd_es1688_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	es1688_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	unsigned char oval, nval;
+	int change;
+	
+	if (ucontrol->value.enumerated.item[0] > 8)
+		return -EINVAL;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	oval = snd_es1688_mixer_read(chip, ES1688_REC_DEV);
+	nval = (ucontrol->value.enumerated.item[0] & 7) | (oval & ~15);
+	change = nval != oval;
+	if (change)
+		snd_es1688_mixer_write(chip, ES1688_REC_DEV, nval);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return change;
+}
+
+#define ES1688_SINGLE(xname, xindex, reg, shift, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_es1688_info_single, \
+  .get = snd_es1688_get_single, .put = snd_es1688_put_single, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
+
+static int snd_es1688_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_es1688_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	es1688_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] = (snd_es1688_mixer_read(chip, 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_es1688_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	es1688_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 char oval, nval;
+	
+	nval = (ucontrol->value.integer.value[0] & mask);
+	if (invert)
+		nval = mask - nval;
+	nval <<= shift;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	oval = snd_es1688_mixer_read(chip, reg);
+	nval = (oval & ~(mask << shift)) | nval;
+	change = nval != oval;
+	if (change)
+		snd_es1688_mixer_write(chip, reg, nval);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return change;
+}
+
+#define ES1688_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_es1688_info_double, \
+  .get = snd_es1688_get_double, .put = snd_es1688_put_double, \
+  .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
+
+static int snd_es1688_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_es1688_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	es1688_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;
+	unsigned char left, right;
+	
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	if (left_reg < 0xa0)
+		left = snd_es1688_mixer_read(chip, left_reg);
+	else
+		left = snd_es1688_read(chip, left_reg);
+	if (left_reg != right_reg) {
+		if (right_reg < 0xa0) 
+			right = snd_es1688_mixer_read(chip, right_reg);
+		else
+			right = snd_es1688_read(chip, right_reg);
+	} else
+		right = left;
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
+	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
+	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_es1688_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	es1688_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 char val1, val2, oval1, oval2;
+	
+	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) {
+		if (left_reg < 0xa0)
+			oval1 = snd_es1688_mixer_read(chip, left_reg);
+		else
+			oval1 = snd_es1688_read(chip, left_reg);
+		if (right_reg < 0xa0)
+			oval2 = snd_es1688_mixer_read(chip, right_reg);
+		else
+			oval2 = snd_es1688_read(chip, right_reg);
+		val1 = (oval1 & ~(mask << shift_left)) | val1;
+		val2 = (oval2 & ~(mask << shift_right)) | val2;
+		change = val1 != oval1 || val2 != oval2;
+		if (change) {
+			if (left_reg < 0xa0)
+				snd_es1688_mixer_write(chip, left_reg, val1);
+			else
+				snd_es1688_write(chip, left_reg, val1);
+			if (right_reg < 0xa0)
+				snd_es1688_mixer_write(chip, right_reg, val1);
+			else
+				snd_es1688_write(chip, right_reg, val1);
+		}
+	} else {
+		if (left_reg < 0xa0)
+			oval1 = snd_es1688_mixer_read(chip, left_reg);
+		else
+			oval1 = snd_es1688_read(chip, left_reg);
+		val1 = (oval1 & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
+		change = val1 != oval1;
+		if (change) {
+			if (left_reg < 0xa0)
+				snd_es1688_mixer_write(chip, left_reg, val1);
+			else
+				snd_es1688_write(chip, left_reg, val1);
+		}
+			
+	}
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return change;
+}
+
+static snd_kcontrol_new_t snd_es1688_controls[] = {
+ES1688_DOUBLE("Master Playback Volume", 0, ES1688_MASTER_DEV, ES1688_MASTER_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("PCM Playback Volume", 0, ES1688_PCM_DEV, ES1688_PCM_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("Line Playback Volume", 0, ES1688_LINE_DEV, ES1688_LINE_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("CD Playback Volume", 0, ES1688_CD_DEV, ES1688_CD_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("FM Playback Volume", 0, ES1688_FM_DEV, ES1688_FM_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("Mic Playback Volume", 0, ES1688_MIC_DEV, ES1688_MIC_DEV, 4, 0, 15, 0),
+ES1688_DOUBLE("Aux Playback Volume", 0, ES1688_AUX_DEV, ES1688_AUX_DEV, 4, 0, 15, 0),
+ES1688_SINGLE("PC Speaker Playback Volume", 0, ES1688_SPEAKER_DEV, 0, 7, 0),
+ES1688_DOUBLE("Capture Volume", 0, ES1688_RECLEV_DEV, ES1688_RECLEV_DEV, 4, 0, 15, 0),
+ES1688_SINGLE("Capture Switch", 0, ES1688_REC_DEV, 4, 1, 1),
+{
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Capture Source",
+	.info = snd_es1688_info_mux,
+	.get = snd_es1688_get_mux,
+	.put = snd_es1688_put_mux,
+},
+};
+
+#define ES1688_INIT_TABLE_SIZE (sizeof(snd_es1688_init_table)/2)
+
+static unsigned char snd_es1688_init_table[][2] = {
+	{ ES1688_MASTER_DEV, 0 },
+	{ ES1688_PCM_DEV, 0 },
+	{ ES1688_LINE_DEV, 0 },
+	{ ES1688_CD_DEV, 0 },
+	{ ES1688_FM_DEV, 0 },
+	{ ES1688_MIC_DEV, 0 },
+	{ ES1688_AUX_DEV, 0 },
+	{ ES1688_SPEAKER_DEV, 0 },
+	{ ES1688_RECLEV_DEV, 0 },
+	{ ES1688_REC_DEV, 0x17 }
+};
+                                        
+int snd_es1688_mixer(es1688_t *chip)
+{
+	snd_card_t *card;
+	unsigned int idx;
+	int err;
+	unsigned char reg, val;
+
+	snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
+
+	card = chip->card;
+
+	strcpy(card->mixername, snd_es1688_chip_id(chip));
+
+	for (idx = 0; idx < ARRAY_SIZE(snd_es1688_controls); idx++) {
+		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es1688_controls[idx], chip))) < 0)
+			return err;
+	}
+	for (idx = 0; idx < ES1688_INIT_TABLE_SIZE; idx++) {
+		reg = snd_es1688_init_table[idx][0];
+		val = snd_es1688_init_table[idx][1];
+		if (reg < 0xa0)
+			snd_es1688_mixer_write(chip, reg, val);
+		else
+			snd_es1688_write(chip, reg, val);
+	}
+	return 0;
+}
+
+EXPORT_SYMBOL(snd_es1688_mixer_write);
+EXPORT_SYMBOL(snd_es1688_create);
+EXPORT_SYMBOL(snd_es1688_pcm);
+EXPORT_SYMBOL(snd_es1688_mixer);
+
+/*
+ *  INIT part
+ */
+
+static int __init alsa_es1688_init(void)
+{
+	return 0;
+}
+
+static void __exit alsa_es1688_exit(void)
+{
+}
+
+module_init(alsa_es1688_init)
+module_exit(alsa_es1688_exit)