Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2441 insertions, 0 deletions

diff --git a/sound/isa/es18xx.c b/sound/isa/es18xx.c
new file mode 100644
index 000000000..0d103d6f8
--- /dev/null
+++ b/sound/isa/es18xx.c
@@ -0,0 +1,2441 @@
+/*
+ *  Driver for generic ESS AudioDrive ES18xx soundcards
+ *  Copyright (c) by Christian Fischbach <fishbach@pool.informatik.rwth-aachen.de>
+ *  Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
+ *
+ *
+ *   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
+ *
+ */
+/* GENERAL NOTES:
+ *
+ * BUGS:
+ * - There are pops (we can't delay in trigger function, cause midlevel 
+ *   often need to trigger down and then up very quickly).
+ *   Any ideas?
+ * - Support for 16 bit DMA seems to be broken. I've no hardware to tune it.
+ */
+
+/*
+ * ES1868  NOTES:
+ * - The chip has one half duplex pcm (with very limited full duplex support).
+ *
+ * - Duplex stereophonic sound is impossible.
+ * - Record and playback must share the same frequency rate.
+ *
+ * - The driver use dma2 for playback and dma1 for capture.
+ */
+
+/*
+ * ES1869 NOTES:
+ *
+ * - there are a first full duplex pcm and a second playback only pcm
+ *   (incompatible with first pcm capture)
+ * 
+ * - there is support for the capture volume and ESS Spatializer 3D effect.
+ *
+ * - contrarily to some pages in DS_1869.PDF the rates can be set
+ *   independently.
+ *
+ * - Zoom Video is implemented by sharing the FM DAC, thus the user can
+ *   have either FM playback or Video playback but not both simultaneously.
+ *   The Video Playback Switch mixer control toggles this choice.
+ *
+ * BUGS:
+ *
+ * - There is a major trouble I noted:
+ *
+ *   using both channel for playback stereo 16 bit samples at 44100 Hz
+ *   the second pcm (Audio1) DMA slows down irregularly and sound is garbled.
+ *   
+ *   The same happens using Audio1 for captureing.
+ *
+ *   The Windows driver does not suffer of this (although it use Audio1
+ *   only for captureing). I'm unable to discover why.
+ *
+ */
+
+/*
+ * ES1879 NOTES:
+ * - When Zoom Video is enabled (reg 0x71 bit 6 toggled on) the PCM playback
+ *   seems to be effected (speaker_test plays a lower frequency). Can't find
+ *   anything in the datasheet to account for this, so a Video Playback Switch
+ *   control has been included to allow ZV to be enabled only when necessary.
+ *   Then again on at least one test system the 0x71 bit 6 enable bit is not 
+ *   needed for ZV, so maybe the datasheet is entirely wrong here.
+ */
+ 
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/isa.h>
+#include <linux/pnp.h>
+#include <linux/isapnp.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+
+#include <asm/dma.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/mpu401.h>
+#include <sound/opl3.h>
+#define SNDRV_LEGACY_FIND_FREE_IRQ
+#define SNDRV_LEGACY_FIND_FREE_DMA
+#include <sound/initval.h>
+
+#define PFX "es18xx: "
+
+struct snd_es18xx {
+	unsigned long port;		/* port of ESS chip */
+	unsigned long ctrl_port;	/* Control port of ESS chip */
+	struct resource *res_port;
+	struct resource *res_mpu_port;
+	struct resource *res_ctrl_port;
+	int irq;			/* IRQ number of ESS chip */
+	int dma1;			/* DMA1 */
+	int dma2;			/* DMA2 */
+	unsigned short version;		/* version of ESS chip */
+	int caps;			/* Chip capabilities */
+	unsigned short audio2_vol;	/* volume level of audio2 */
+
+	unsigned short active;		/* active channel mask */
+	unsigned int dma1_shift;
+	unsigned int dma2_shift;
+
+	struct snd_pcm *pcm;
+	struct snd_pcm_substream *playback_a_substream;
+	struct snd_pcm_substream *capture_a_substream;
+	struct snd_pcm_substream *playback_b_substream;
+
+	struct snd_rawmidi *rmidi;
+
+	struct snd_kcontrol *hw_volume;
+	struct snd_kcontrol *hw_switch;
+	struct snd_kcontrol *master_volume;
+	struct snd_kcontrol *master_switch;
+
+	spinlock_t reg_lock;
+	spinlock_t mixer_lock;
+#ifdef CONFIG_PM
+	unsigned char pm_reg;
+#endif
+#ifdef CONFIG_PNP
+	struct pnp_dev *dev;
+	struct pnp_dev *devc;
+#endif
+};
+
+#define AUDIO1_IRQ	0x01
+#define AUDIO2_IRQ	0x02
+#define HWV_IRQ		0x04
+#define MPU_IRQ		0x08
+
+#define ES18XX_PCM2	0x0001	/* Has two useable PCM */
+#define ES18XX_SPATIALIZER 0x0002	/* Has 3D Spatializer */
+#define ES18XX_RECMIX	0x0004	/* Has record mixer */
+#define ES18XX_DUPLEX_MONO 0x0008	/* Has mono duplex only */
+#define ES18XX_DUPLEX_SAME 0x0010	/* Playback and record must share the same rate */
+#define ES18XX_NEW_RATE	0x0020	/* More precise rate setting */
+#define ES18XX_AUXB	0x0040	/* AuxB mixer control */
+#define ES18XX_HWV	0x0080	/* Has separate hardware volume mixer controls*/
+#define ES18XX_MONO	0x0100	/* Mono_in mixer control */
+#define ES18XX_I2S	0x0200	/* I2S mixer control */
+#define ES18XX_MUTEREC	0x0400	/* Record source can be muted */
+#define ES18XX_CONTROL	0x0800	/* Has control ports */
+#define ES18XX_GPO_2BIT	0x1000	/* GPO0,1 controlled by PM port */
+
+/* Power Management */
+#define ES18XX_PM	0x07
+#define ES18XX_PM_GPO0	0x01
+#define ES18XX_PM_GPO1	0x02
+#define ES18XX_PM_PDR	0x04
+#define ES18XX_PM_ANA	0x08
+#define ES18XX_PM_FM	0x020
+#define ES18XX_PM_SUS	0x080
+
+/* Lowlevel */
+
+#define DAC1 0x01
+#define ADC1 0x02
+#define DAC2 0x04
+#define MILLISECOND 10000
+
+static int snd_es18xx_dsp_command(struct snd_es18xx *chip, unsigned char val)
+{
+        int i;
+
+        for(i = MILLISECOND; i; i--)
+                if ((inb(chip->port + 0x0C) & 0x80) == 0) {
+                        outb(val, chip->port + 0x0C);
+                        return 0;
+                }
+	snd_printk(KERN_ERR "dsp_command: timeout (0x%x)\n", val);
+        return -EINVAL;
+}
+
+static int snd_es18xx_dsp_get_byte(struct snd_es18xx *chip)
+{
+        int i;
+
+        for(i = MILLISECOND/10; i; i--)
+                if (inb(chip->port + 0x0C) & 0x40)
+                        return inb(chip->port + 0x0A);
+	snd_printk(KERN_ERR "dsp_get_byte failed: 0x%lx = 0x%x!!!\n",
+		   chip->port + 0x0A, inb(chip->port + 0x0A));
+        return -ENODEV;
+}
+
+#undef REG_DEBUG
+
+static int snd_es18xx_write(struct snd_es18xx *chip,
+			    unsigned char reg, unsigned char data)
+{
+	unsigned long flags;
+	int ret;
+	
+        spin_lock_irqsave(&chip->reg_lock, flags);
+	ret = snd_es18xx_dsp_command(chip, reg);
+	if (ret < 0)
+		goto end;
+        ret = snd_es18xx_dsp_command(chip, data);
+ end:
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+#ifdef REG_DEBUG
+	snd_printk(KERN_DEBUG "Reg %02x set to %02x\n", reg, data);
+#endif
+	return ret;
+}
+
+static int snd_es18xx_read(struct snd_es18xx *chip, unsigned char reg)
+{
+	unsigned long flags;
+	int ret, data;
+        spin_lock_irqsave(&chip->reg_lock, flags);
+	ret = snd_es18xx_dsp_command(chip, 0xC0);
+	if (ret < 0)
+		goto end;
+        ret = snd_es18xx_dsp_command(chip, reg);
+	if (ret < 0)
+		goto end;
+	data = snd_es18xx_dsp_get_byte(chip);
+	ret = data;
+#ifdef REG_DEBUG
+	snd_printk(KERN_DEBUG "Reg %02x now is %02x (%d)\n", reg, data, ret);
+#endif
+ end:
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return ret;
+}
+
+/* Return old value */
+static int snd_es18xx_bits(struct snd_es18xx *chip, unsigned char reg,
+			   unsigned char mask, unsigned char val)
+{
+        int ret;
+	unsigned char old, new, oval;
+	unsigned long flags;
+        spin_lock_irqsave(&chip->reg_lock, flags);
+        ret = snd_es18xx_dsp_command(chip, 0xC0);
+	if (ret < 0)
+		goto end;
+        ret = snd_es18xx_dsp_command(chip, reg);
+	if (ret < 0)
+		goto end;
+	ret = snd_es18xx_dsp_get_byte(chip);
+	if (ret < 0) {
+		goto end;
+	}
+	old = ret;
+	oval = old & mask;
+	if (val != oval) {
+		ret = snd_es18xx_dsp_command(chip, reg);
+		if (ret < 0)
+			goto end;
+		new = (old & ~mask) | (val & mask);
+		ret = snd_es18xx_dsp_command(chip, new);
+		if (ret < 0)
+			goto end;
+#ifdef REG_DEBUG
+		snd_printk(KERN_DEBUG "Reg %02x was %02x, set to %02x (%d)\n",
+			   reg, old, new, ret);
+#endif
+	}
+	ret = oval;
+ end:
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return ret;
+}
+
+static inline void snd_es18xx_mixer_write(struct snd_es18xx *chip,
+			    unsigned char reg, unsigned char data)
+{
+	unsigned long flags;
+        spin_lock_irqsave(&chip->mixer_lock, flags);
+        outb(reg, chip->port + 0x04);
+        outb(data, chip->port + 0x05);
+        spin_unlock_irqrestore(&chip->mixer_lock, flags);
+#ifdef REG_DEBUG
+	snd_printk(KERN_DEBUG "Mixer reg %02x set to %02x\n", reg, data);
+#endif
+}
+
+static inline int snd_es18xx_mixer_read(struct snd_es18xx *chip, unsigned char reg)
+{
+	unsigned long flags;
+	int data;
+        spin_lock_irqsave(&chip->mixer_lock, flags);
+        outb(reg, chip->port + 0x04);
+	data = inb(chip->port + 0x05);
+        spin_unlock_irqrestore(&chip->mixer_lock, flags);
+#ifdef REG_DEBUG
+	snd_printk(KERN_DEBUG "Mixer reg %02x now is %02x\n", reg, data);
+#endif
+        return data;
+}
+
+/* Return old value */
+static inline int snd_es18xx_mixer_bits(struct snd_es18xx *chip, unsigned char reg,
+					unsigned char mask, unsigned char val)
+{
+	unsigned char old, new, oval;
+	unsigned long flags;
+        spin_lock_irqsave(&chip->mixer_lock, flags);
+        outb(reg, chip->port + 0x04);
+	old = inb(chip->port + 0x05);
+	oval = old & mask;
+	if (val != oval) {
+		new = (old & ~mask) | (val & mask);
+		outb(new, chip->port + 0x05);
+#ifdef REG_DEBUG
+		snd_printk(KERN_DEBUG "Mixer reg %02x was %02x, set to %02x\n",
+			   reg, old, new);
+#endif
+	}
+        spin_unlock_irqrestore(&chip->mixer_lock, flags);
+	return oval;
+}
+
+static inline int snd_es18xx_mixer_writable(struct snd_es18xx *chip, unsigned char reg,
+					    unsigned char mask)
+{
+	int old, expected, new;
+	unsigned long flags;
+        spin_lock_irqsave(&chip->mixer_lock, flags);
+        outb(reg, chip->port + 0x04);
+	old = inb(chip->port + 0x05);
+	expected = old ^ mask;
+	outb(expected, chip->port + 0x05);
+	new = inb(chip->port + 0x05);
+        spin_unlock_irqrestore(&chip->mixer_lock, flags);
+#ifdef REG_DEBUG
+	snd_printk(KERN_DEBUG "Mixer reg %02x was %02x, set to %02x, now is %02x\n",
+		   reg, old, expected, new);
+#endif
+	return expected == new;
+}
+
+
+static int snd_es18xx_reset(struct snd_es18xx *chip)
+{
+	int i;
+        outb(0x03, chip->port + 0x06);
+        inb(chip->port + 0x06);
+        outb(0x00, chip->port + 0x06);
+        for(i = 0; i < MILLISECOND && !(inb(chip->port + 0x0E) & 0x80); i++);
+        if (inb(chip->port + 0x0A) != 0xAA)
+                return -1;
+	return 0;
+}
+
+static int snd_es18xx_reset_fifo(struct snd_es18xx *chip)
+{
+        outb(0x02, chip->port + 0x06);
+        inb(chip->port + 0x06);
+        outb(0x00, chip->port + 0x06);
+	return 0;
+}
+
+static const struct snd_ratnum new_clocks[2] = {
+	{
+		.num = 793800,
+		.den_min = 1,
+		.den_max = 128,
+		.den_step = 1,
+	},
+	{
+		.num = 768000,
+		.den_min = 1,
+		.den_max = 128,
+		.den_step = 1,
+	}
+};
+
+static const struct snd_pcm_hw_constraint_ratnums new_hw_constraints_clocks = {
+	.nrats = 2,
+	.rats = new_clocks,
+};
+
+static const struct snd_ratnum old_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 const struct snd_pcm_hw_constraint_ratnums old_hw_constraints_clocks  = {
+	.nrats = 2,
+	.rats = old_clocks,
+};
+
+
+static void snd_es18xx_rate_set(struct snd_es18xx *chip, 
+				struct snd_pcm_substream *substream,
+				int mode)
+{
+	unsigned int bits, div0;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	if (chip->caps & ES18XX_NEW_RATE) {
+		if (runtime->rate_num == new_clocks[0].num)
+			bits = 128 - runtime->rate_den;
+		else
+			bits = 256 - runtime->rate_den;
+	} else {
+		if (runtime->rate_num == old_clocks[0].num)
+			bits = 256 - runtime->rate_den;
+		else
+			bits = 128 - runtime->rate_den;
+	}
+
+	/* set filter register */
+	div0 = 256 - 7160000*20/(8*82*runtime->rate);
+		
+	if ((chip->caps & ES18XX_PCM2) && mode == DAC2) {
+		snd_es18xx_mixer_write(chip, 0x70, bits);
+		/*
+		 * Comment from kernel oss driver:
+		 * FKS: fascinating: 0x72 doesn't seem to work.
+		 */
+		snd_es18xx_write(chip, 0xA2, div0);
+		snd_es18xx_mixer_write(chip, 0x72, div0);
+	} else {
+		snd_es18xx_write(chip, 0xA1, bits);
+		snd_es18xx_write(chip, 0xA2, div0);
+	}
+}
+
+static int snd_es18xx_playback_hw_params(struct snd_pcm_substream *substream,
+					 struct snd_pcm_hw_params *hw_params)
+{
+	struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+	int shift, err;
+
+	shift = 0;
+	if (params_channels(hw_params) == 2)
+		shift++;
+	if (snd_pcm_format_width(params_format(hw_params)) == 16)
+		shift++;
+
+	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
+		if ((chip->caps & ES18XX_DUPLEX_MONO) &&
+		    (chip->capture_a_substream) &&
+		    params_channels(hw_params) != 1) {
+			_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
+			return -EBUSY;
+		}
+		chip->dma2_shift = shift;
+	} else {
+		chip->dma1_shift = shift;
+	}
+	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
+		return err;
+	return 0;
+}
+
+static int snd_es18xx_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_es18xx_playback1_prepare(struct snd_es18xx *chip,
+					struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+        snd_es18xx_rate_set(chip, substream, DAC2);
+
+        /* Transfer Count Reload */
+        count = 0x10000 - count;
+        snd_es18xx_mixer_write(chip, 0x74, count & 0xff);
+        snd_es18xx_mixer_write(chip, 0x76, count >> 8);
+
+	/* Set format */
+        snd_es18xx_mixer_bits(chip, 0x7A, 0x07,
+			      ((runtime->channels == 1) ? 0x00 : 0x02) |
+			      (snd_pcm_format_width(runtime->format) == 16 ? 0x01 : 0x00) |
+			      (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x04));
+
+        /* Set DMA controller */
+        snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
+
+	return 0;
+}
+
+static int snd_es18xx_playback1_trigger(struct snd_es18xx *chip,
+					struct snd_pcm_substream *substream,
+					int cmd)
+{
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+		if (chip->active & DAC2)
+			return 0;
+		chip->active |= DAC2;
+                /* Start DMA */
+		if (chip->dma2 >= 4)
+			snd_es18xx_mixer_write(chip, 0x78, 0xb3);
+		else
+			snd_es18xx_mixer_write(chip, 0x78, 0x93);
+#ifdef AVOID_POPS
+		/* Avoid pops */
+		mdelay(100);
+		if (chip->caps & ES18XX_PCM2)
+			/* Restore Audio 2 volume */
+			snd_es18xx_mixer_write(chip, 0x7C, chip->audio2_vol);
+		else
+			/* Enable PCM output */
+			snd_es18xx_dsp_command(chip, 0xD1);
+#endif
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		if (!(chip->active & DAC2))
+			return 0;
+		chip->active &= ~DAC2;
+                /* Stop DMA */
+                snd_es18xx_mixer_write(chip, 0x78, 0x00);
+#ifdef AVOID_POPS
+		mdelay(25);
+		if (chip->caps & ES18XX_PCM2)
+			/* Set Audio 2 volume to 0 */
+			snd_es18xx_mixer_write(chip, 0x7C, 0);
+		else
+			/* Disable PCM output */
+			snd_es18xx_dsp_command(chip, 0xD3);
+#endif
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int snd_es18xx_capture_hw_params(struct snd_pcm_substream *substream,
+					struct snd_pcm_hw_params *hw_params)
+{
+	struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+	int shift, err;
+
+	shift = 0;
+	if ((chip->caps & ES18XX_DUPLEX_MONO) &&
+	    chip->playback_a_substream &&
+	    params_channels(hw_params) != 1) {
+		_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
+		return -EBUSY;
+	}
+	if (params_channels(hw_params) == 2)
+		shift++;
+	if (snd_pcm_format_width(params_format(hw_params)) == 16)
+		shift++;
+	chip->dma1_shift = shift;
+	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
+		return err;
+	return 0;
+}
+
+static int snd_es18xx_capture_prepare(struct snd_pcm_substream *substream)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+	snd_es18xx_reset_fifo(chip);
+
+        /* Set stereo/mono */
+        snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
+
+        snd_es18xx_rate_set(chip, substream, ADC1);
+
+        /* Transfer Count Reload */
+	count = 0x10000 - count;
+	snd_es18xx_write(chip, 0xA4, count & 0xff);
+	snd_es18xx_write(chip, 0xA5, count >> 8);
+
+#ifdef AVOID_POPS
+	mdelay(100);
+#endif
+
+        /* Set format */
+        snd_es18xx_write(chip, 0xB7, 
+                         snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
+        snd_es18xx_write(chip, 0xB7, 0x90 |
+                         ((runtime->channels == 1) ? 0x40 : 0x08) |
+                         (snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
+                         (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
+
+        /* Set DMA controller */
+        snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
+
+	return 0;
+}
+
+static int snd_es18xx_capture_trigger(struct snd_pcm_substream *substream,
+				      int cmd)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+		if (chip->active & ADC1)
+			return 0;
+		chip->active |= ADC1;
+                /* Start DMA */
+                snd_es18xx_write(chip, 0xB8, 0x0f);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		if (!(chip->active & ADC1))
+			return 0;
+		chip->active &= ~ADC1;
+                /* Stop DMA */
+                snd_es18xx_write(chip, 0xB8, 0x00);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int snd_es18xx_playback2_prepare(struct snd_es18xx *chip,
+					struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	unsigned int count = snd_pcm_lib_period_bytes(substream);
+
+	snd_es18xx_reset_fifo(chip);
+
+        /* Set stereo/mono */
+        snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
+
+        snd_es18xx_rate_set(chip, substream, DAC1);
+
+        /* Transfer Count Reload */
+	count = 0x10000 - count;
+	snd_es18xx_write(chip, 0xA4, count & 0xff);
+	snd_es18xx_write(chip, 0xA5, count >> 8);
+
+        /* Set format */
+        snd_es18xx_write(chip, 0xB6,
+                         snd_pcm_format_unsigned(runtime->format) ? 0x80 : 0x00);
+        snd_es18xx_write(chip, 0xB7, 
+                         snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
+        snd_es18xx_write(chip, 0xB7, 0x90 |
+                         (runtime->channels == 1 ? 0x40 : 0x08) |
+                         (snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
+                         (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
+
+        /* Set DMA controller */
+        snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
+
+	return 0;
+}
+
+static int snd_es18xx_playback2_trigger(struct snd_es18xx *chip,
+					struct snd_pcm_substream *substream,
+					int cmd)
+{
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+		if (chip->active & DAC1)
+			return 0;
+		chip->active |= DAC1;
+                /* Start DMA */
+                snd_es18xx_write(chip, 0xB8, 0x05);
+#ifdef AVOID_POPS
+		/* Avoid pops */
+		mdelay(100);
+                /* Enable Audio 1 */
+                snd_es18xx_dsp_command(chip, 0xD1);
+#endif
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		if (!(chip->active & DAC1))
+			return 0;
+		chip->active &= ~DAC1;
+                /* Stop DMA */
+                snd_es18xx_write(chip, 0xB8, 0x00);
+#ifdef AVOID_POPS
+		/* Avoid pops */
+		mdelay(25);
+                /* Disable Audio 1 */
+                snd_es18xx_dsp_command(chip, 0xD3);
+#endif
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int snd_es18xx_playback_prepare(struct snd_pcm_substream *substream)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
+		return snd_es18xx_playback1_prepare(chip, substream);
+	else
+		return snd_es18xx_playback2_prepare(chip, substream);
+}
+
+static int snd_es18xx_playback_trigger(struct snd_pcm_substream *substream,
+				       int cmd)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
+		return snd_es18xx_playback1_trigger(chip, substream, cmd);
+	else
+		return snd_es18xx_playback2_trigger(chip, substream, cmd);
+}
+
+static irqreturn_t snd_es18xx_interrupt(int irq, void *dev_id)
+{
+	struct snd_card *card = dev_id;
+	struct snd_es18xx *chip = card->private_data;
+	unsigned char status;
+
+	if (chip->caps & ES18XX_CONTROL) {
+		/* Read Interrupt status */
+		status = inb(chip->ctrl_port + 6);
+	} else {
+		/* Read Interrupt status */
+		status = snd_es18xx_mixer_read(chip, 0x7f) >> 4;
+	}
+#if 0
+	else {
+		status = 0;
+		if (inb(chip->port + 0x0C) & 0x01)
+			status |= AUDIO1_IRQ;
+		if (snd_es18xx_mixer_read(chip, 0x7A) & 0x80)
+			status |= AUDIO2_IRQ;
+		if ((chip->caps & ES18XX_HWV) &&
+		    snd_es18xx_mixer_read(chip, 0x64) & 0x10)
+			status |= HWV_IRQ;
+	}
+#endif
+
+	/* Audio 1 & Audio 2 */
+        if (status & AUDIO2_IRQ) {
+                if (chip->active & DAC2)
+                	snd_pcm_period_elapsed(chip->playback_a_substream);
+		/* ack interrupt */
+                snd_es18xx_mixer_bits(chip, 0x7A, 0x80, 0x00);
+        }
+        if (status & AUDIO1_IRQ) {
+                /* ok.. capture is active */
+                if (chip->active & ADC1)
+                	snd_pcm_period_elapsed(chip->capture_a_substream);
+                /* ok.. playback2 is active */
+                else if (chip->active & DAC1)
+                	snd_pcm_period_elapsed(chip->playback_b_substream);
+		/* ack interrupt */
+		inb(chip->port + 0x0E);
+        }
+
+	/* MPU */
+	if ((status & MPU_IRQ) && chip->rmidi)
+		snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
+
+	/* Hardware volume */
+	if (status & HWV_IRQ) {
+		int split = 0;
+		if (chip->caps & ES18XX_HWV) {
+			split = snd_es18xx_mixer_read(chip, 0x64) & 0x80;
+			snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
+					&chip->hw_switch->id);
+			snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
+					&chip->hw_volume->id);
+		}
+		if (!split) {
+			snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
+					&chip->master_switch->id);
+			snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE,
+					&chip->master_volume->id);
+		}
+		/* ack interrupt */
+		snd_es18xx_mixer_write(chip, 0x66, 0x00);
+	}
+	return IRQ_HANDLED;
+}
+
+static snd_pcm_uframes_t snd_es18xx_playback_pointer(struct snd_pcm_substream *substream)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	int pos;
+
+	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
+		if (!(chip->active & DAC2))
+			return 0;
+		pos = snd_dma_pointer(chip->dma2, size);
+		return pos >> chip->dma2_shift;
+	} else {
+		if (!(chip->active & DAC1))
+			return 0;
+		pos = snd_dma_pointer(chip->dma1, size);
+		return pos >> chip->dma1_shift;
+	}
+}
+
+static snd_pcm_uframes_t snd_es18xx_capture_pointer(struct snd_pcm_substream *substream)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
+	int pos;
+
+        if (!(chip->active & ADC1))
+                return 0;
+	pos = snd_dma_pointer(chip->dma1, size);
+	return pos >> chip->dma1_shift;
+}
+
+static const struct snd_pcm_hardware snd_es18xx_playback =
+{
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_RESUME |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | 
+				 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_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 const struct snd_pcm_hardware snd_es18xx_capture =
+{
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_RESUME |
+				 SNDRV_PCM_INFO_MMAP_VALID),
+	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | 
+				 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_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_es18xx_playback_open(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+
+	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
+		if ((chip->caps & ES18XX_DUPLEX_MONO) &&
+		    chip->capture_a_substream && 
+		    chip->capture_a_substream->runtime->channels != 1)
+			return -EAGAIN;
+		chip->playback_a_substream = substream;
+	} else if (substream->number <= 1) {
+		if (chip->capture_a_substream)
+			return -EAGAIN;
+		chip->playback_b_substream = substream;
+	} else {
+		snd_BUG();
+		return -EINVAL;
+	}
+	substream->runtime->hw = snd_es18xx_playback;
+	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+				      (chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
+        return 0;
+}
+
+static int snd_es18xx_capture_open(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+
+        if (chip->playback_b_substream)
+                return -EAGAIN;
+	if ((chip->caps & ES18XX_DUPLEX_MONO) &&
+	    chip->playback_a_substream &&
+	    chip->playback_a_substream->runtime->channels != 1)
+		return -EAGAIN;
+        chip->capture_a_substream = substream;
+	substream->runtime->hw = snd_es18xx_capture;
+	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+				      (chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
+        return 0;
+}
+
+static int snd_es18xx_playback_close(struct snd_pcm_substream *substream)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+
+	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
+		chip->playback_a_substream = NULL;
+	else
+		chip->playback_b_substream = NULL;
+	
+	snd_pcm_lib_free_pages(substream);
+	return 0;
+}
+
+static int snd_es18xx_capture_close(struct snd_pcm_substream *substream)
+{
+        struct snd_es18xx *chip = snd_pcm_substream_chip(substream);
+
+        chip->capture_a_substream = NULL;
+	snd_pcm_lib_free_pages(substream);
+        return 0;
+}
+
+/*
+ *  MIXER part
+ */
+
+/* Record source mux routines:
+ * Depending on the chipset this mux switches between 4, 5, or 8 possible inputs.
+ * bit table for the 4/5 source mux:
+ * reg 1C:
+ *  b2 b1 b0   muxSource
+ *   x  0  x   microphone
+ *   0  1  x   CD
+ *   1  1  0   line
+ *   1  1  1   mixer
+ * if it's "mixer" and it's a 5 source mux chipset then reg 7A bit 3 determines
+ * either the play mixer or the capture mixer.
+ *
+ * "map4Source" translates from source number to reg bit pattern
+ * "invMap4Source" translates from reg bit pattern to source number
+ */
+
+static int snd_es18xx_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+{
+	static const char * const texts5Source[5] = {
+		"Mic", "CD", "Line", "Master", "Mix"
+	};
+	static const char * const texts8Source[8] = {
+		"Mic", "Mic Master", "CD", "AOUT",
+		"Mic1", "Mix", "Line", "Master"
+	};
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+
+	switch (chip->version) {
+	case 0x1868:
+	case 0x1878:
+		return snd_ctl_enum_info(uinfo, 1, 4, texts5Source);
+	case 0x1887:
+	case 0x1888:
+		return snd_ctl_enum_info(uinfo, 1, 5, texts5Source);
+	case 0x1869: /* DS somewhat contradictory for 1869: could be be 5 or 8 */
+	case 0x1879:
+		return snd_ctl_enum_info(uinfo, 1, 8, texts8Source);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int snd_es18xx_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	static unsigned char invMap4Source[8] = {0, 0, 1, 1, 0, 0, 2, 3};
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	int muxSource = snd_es18xx_mixer_read(chip, 0x1c) & 0x07;
+	if (!(chip->version == 0x1869 || chip->version == 0x1879)) {
+		muxSource = invMap4Source[muxSource];
+		if (muxSource==3 && 
+		    (chip->version == 0x1887 || chip->version == 0x1888) &&
+		    (snd_es18xx_mixer_read(chip, 0x7a) & 0x08)
+		) 
+			muxSource = 4;
+	}
+	ucontrol->value.enumerated.item[0] = muxSource;
+	return 0;
+}
+
+static int snd_es18xx_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	static unsigned char map4Source[4] = {0, 2, 6, 7};
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	unsigned char val = ucontrol->value.enumerated.item[0];
+	unsigned char retVal = 0;
+
+	switch (chip->version) {
+ /* 5 source chips */
+	case 0x1887:
+	case 0x1888:
+		if (val > 4)
+			return -EINVAL;
+		if (val == 4) {
+			retVal = snd_es18xx_mixer_bits(chip, 0x7a, 0x08, 0x08) != 0x08;
+			val = 3;
+		} else
+			retVal = snd_es18xx_mixer_bits(chip, 0x7a, 0x08, 0x00) != 0x00;
+		/* fall through */
+ /* 4 source chips */
+	case 0x1868:
+	case 0x1878:
+		if (val > 3)
+			return -EINVAL;
+		val = map4Source[val];
+		break;
+ /* 8 source chips */
+	case 0x1869:
+	case 0x1879:
+		if (val > 7)
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return (snd_es18xx_mixer_bits(chip, 0x1c, 0x07, val) != val) || retVal;
+}
+
+#define snd_es18xx_info_spatializer_enable	snd_ctl_boolean_mono_info
+
+static int snd_es18xx_get_spatializer_enable(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	unsigned char val = snd_es18xx_mixer_read(chip, 0x50);
+	ucontrol->value.integer.value[0] = !!(val & 8);
+	return 0;
+}
+
+static int snd_es18xx_put_spatializer_enable(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	unsigned char oval, nval;
+	int change;
+	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
+	oval = snd_es18xx_mixer_read(chip, 0x50) & 0x0c;
+	change = nval != oval;
+	if (change) {
+		snd_es18xx_mixer_write(chip, 0x50, nval & ~0x04);
+		snd_es18xx_mixer_write(chip, 0x50, nval);
+	}
+	return change;
+}
+
+static int snd_es18xx_info_hw_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 63;
+	return 0;
+}
+
+static int snd_es18xx_get_hw_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.integer.value[0] = snd_es18xx_mixer_read(chip, 0x61) & 0x3f;
+	ucontrol->value.integer.value[1] = snd_es18xx_mixer_read(chip, 0x63) & 0x3f;
+	return 0;
+}
+
+#define snd_es18xx_info_hw_switch	snd_ctl_boolean_stereo_info
+
+static int snd_es18xx_get_hw_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	ucontrol->value.integer.value[0] = !(snd_es18xx_mixer_read(chip, 0x61) & 0x40);
+	ucontrol->value.integer.value[1] = !(snd_es18xx_mixer_read(chip, 0x63) & 0x40);
+	return 0;
+}
+
+static void snd_es18xx_hwv_free(struct snd_kcontrol *kcontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	chip->master_volume = NULL;
+	chip->master_switch = NULL;
+	chip->hw_volume = NULL;
+	chip->hw_switch = NULL;
+}
+
+static int snd_es18xx_reg_bits(struct snd_es18xx *chip, unsigned char reg,
+			       unsigned char mask, unsigned char val)
+{
+	if (reg < 0xa0)
+		return snd_es18xx_mixer_bits(chip, reg, mask, val);
+	else
+		return snd_es18xx_bits(chip, reg, mask, val);
+}
+
+static int snd_es18xx_reg_read(struct snd_es18xx *chip, unsigned char reg)
+{
+	if (reg < 0xa0)
+		return snd_es18xx_mixer_read(chip, reg);
+	else
+		return snd_es18xx_read(chip, reg);
+}
+
+#define ES18XX_SINGLE(xname, xindex, reg, shift, mask, flags) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
+  .info = snd_es18xx_info_single, \
+  .get = snd_es18xx_get_single, .put = snd_es18xx_put_single, \
+  .private_value = reg | (shift << 8) | (mask << 16) | (flags << 24) }
+
+#define ES18XX_FL_INVERT	(1 << 0)
+#define ES18XX_FL_PMPORT	(1 << 1)
+
+static int snd_es18xx_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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_es18xx_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	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) & ES18XX_FL_INVERT;
+	int pm_port = (kcontrol->private_value >> 24) & ES18XX_FL_PMPORT;
+	int val;
+
+	if (pm_port)
+		val = inb(chip->port + ES18XX_PM);
+	else
+		val = snd_es18xx_reg_read(chip, reg);
+	ucontrol->value.integer.value[0] = (val >> shift) & mask;
+	if (invert)
+		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
+	return 0;
+}
+
+static int snd_es18xx_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	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) & ES18XX_FL_INVERT;
+	int pm_port = (kcontrol->private_value >> 24) & ES18XX_FL_PMPORT;
+	unsigned char val;
+	
+	val = (ucontrol->value.integer.value[0] & mask);
+	if (invert)
+		val = mask - val;
+	mask <<= shift;
+	val <<= shift;
+	if (pm_port) {
+		unsigned char cur = inb(chip->port + ES18XX_PM);
+
+		if ((cur & mask) == val)
+			return 0;
+		outb((cur & ~mask) | val, chip->port + ES18XX_PM);
+		return 1;
+	}
+
+	return snd_es18xx_reg_bits(chip, reg, mask, val) != val;
+}
+
+#define ES18XX_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_es18xx_info_double, \
+  .get = snd_es18xx_get_double, .put = snd_es18xx_put_double, \
+  .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
+
+static int snd_es18xx_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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_es18xx_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	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;
+	
+	left = snd_es18xx_reg_read(chip, left_reg);
+	if (left_reg != right_reg)
+		right = snd_es18xx_reg_read(chip, right_reg);
+	else
+		right = left;
+	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_es18xx_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_es18xx *chip = snd_kcontrol_chip(kcontrol);
+	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, mask1, mask2;
+	
+	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;
+	mask1 = mask << shift_left;
+	mask2 = mask << shift_right;
+	if (left_reg != right_reg) {
+		change = 0;
+		if (snd_es18xx_reg_bits(chip, left_reg, mask1, val1) != val1)
+			change = 1;
+		if (snd_es18xx_reg_bits(chip, right_reg, mask2, val2) != val2)
+			change = 1;
+	} else {
+		change = (snd_es18xx_reg_bits(chip, left_reg, mask1 | mask2, 
+					      val1 | val2) != (val1 | val2));
+	}
+	return change;
+}
+
+/* Mixer controls
+ * These arrays contain setup data for mixer controls.
+ * 
+ * The controls that are universal to all chipsets are fully initialized
+ * here.
+ */
+static struct snd_kcontrol_new snd_es18xx_base_controls[] = {
+ES18XX_DOUBLE("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0),
+ES18XX_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
+ES18XX_DOUBLE("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0),
+ES18XX_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
+ES18XX_DOUBLE("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0),
+ES18XX_DOUBLE("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0),
+ES18XX_DOUBLE("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0),
+ES18XX_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
+ES18XX_DOUBLE("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0),
+{
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Capture Source",
+	.info = snd_es18xx_info_mux,
+	.get = snd_es18xx_get_mux,
+	.put = snd_es18xx_put_mux,
+}
+};
+
+static struct snd_kcontrol_new snd_es18xx_recmix_controls[] = {
+ES18XX_DOUBLE("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0),
+ES18XX_DOUBLE("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0),
+ES18XX_DOUBLE("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0),
+ES18XX_DOUBLE("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0),
+ES18XX_DOUBLE("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0),
+ES18XX_DOUBLE("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0)
+};
+
+/*
+ * The chipset specific mixer controls
+ */
+static struct snd_kcontrol_new snd_es18xx_opt_speaker =
+	ES18XX_SINGLE("Beep Playback Volume", 0, 0x3c, 0, 7, 0);
+
+static struct snd_kcontrol_new snd_es18xx_opt_1869[] = {
+ES18XX_SINGLE("Capture Switch", 0, 0x1c, 4, 1, ES18XX_FL_INVERT),
+ES18XX_SINGLE("Video Playback Switch", 0, 0x7f, 0, 1, 0),
+ES18XX_DOUBLE("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
+ES18XX_DOUBLE("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0)
+};
+
+static struct snd_kcontrol_new snd_es18xx_opt_1878 =
+	ES18XX_DOUBLE("Video Playback Volume", 0, 0x68, 0x68, 4, 0, 15, 0);
+
+static struct snd_kcontrol_new snd_es18xx_opt_1879[] = {
+ES18XX_SINGLE("Video Playback Switch", 0, 0x71, 6, 1, 0),
+ES18XX_DOUBLE("Video Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
+ES18XX_DOUBLE("Video Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0)
+};
+
+static struct snd_kcontrol_new snd_es18xx_pcm1_controls[] = {
+ES18XX_DOUBLE("PCM Playback Volume", 0, 0x14, 0x14, 4, 0, 15, 0),
+};
+
+static struct snd_kcontrol_new snd_es18xx_pcm2_controls[] = {
+ES18XX_DOUBLE("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0),
+ES18XX_DOUBLE("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0)
+};
+
+static struct snd_kcontrol_new snd_es18xx_spatializer_controls[] = {
+ES18XX_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
+{
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "3D Control - Switch",
+	.info = snd_es18xx_info_spatializer_enable,
+	.get = snd_es18xx_get_spatializer_enable,
+	.put = snd_es18xx_put_spatializer_enable,
+}
+};
+
+static struct snd_kcontrol_new snd_es18xx_micpre1_control = 
+ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0xa9, 2, 1, 0);
+
+static struct snd_kcontrol_new snd_es18xx_micpre2_control =
+ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0);
+
+static struct snd_kcontrol_new snd_es18xx_hw_volume_controls[] = {
+{
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Hardware Master Playback Volume",
+	.access = SNDRV_CTL_ELEM_ACCESS_READ,
+	.info = snd_es18xx_info_hw_volume,
+	.get = snd_es18xx_get_hw_volume,
+},
+{
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Hardware Master Playback Switch",
+	.access = SNDRV_CTL_ELEM_ACCESS_READ,
+	.info = snd_es18xx_info_hw_switch,
+	.get = snd_es18xx_get_hw_switch,
+},
+ES18XX_SINGLE("Hardware Master Volume Split", 0, 0x64, 7, 1, 0),
+};
+
+static struct snd_kcontrol_new snd_es18xx_opt_gpo_2bit[] = {
+ES18XX_SINGLE("GPO0 Switch", 0, ES18XX_PM, 0, 1, ES18XX_FL_PMPORT),
+ES18XX_SINGLE("GPO1 Switch", 0, ES18XX_PM, 1, 1, ES18XX_FL_PMPORT),
+};
+
+static int snd_es18xx_config_read(struct snd_es18xx *chip, unsigned char reg)
+{
+	int data;
+
+	outb(reg, chip->ctrl_port);
+	data = inb(chip->ctrl_port + 1);
+	return data;
+}
+
+static void snd_es18xx_config_write(struct snd_es18xx *chip,
+				    unsigned char reg, unsigned char data)
+{
+	/* No need for spinlocks, this function is used only in
+	   otherwise protected init code */
+	outb(reg, chip->ctrl_port);
+	outb(data, chip->ctrl_port + 1);
+#ifdef REG_DEBUG
+	snd_printk(KERN_DEBUG "Config reg %02x set to %02x\n", reg, data);
+#endif
+}
+
+static int snd_es18xx_initialize(struct snd_es18xx *chip,
+				 unsigned long mpu_port,
+				 unsigned long fm_port)
+{
+	int mask = 0;
+
+        /* enable extended mode */
+        snd_es18xx_dsp_command(chip, 0xC6);
+	/* Reset mixer registers */
+	snd_es18xx_mixer_write(chip, 0x00, 0x00);
+
+        /* Audio 1 DMA demand mode (4 bytes/request) */
+        snd_es18xx_write(chip, 0xB9, 2);
+	if (chip->caps & ES18XX_CONTROL) {
+		/* Hardware volume IRQ */
+		snd_es18xx_config_write(chip, 0x27, chip->irq);
+		if (fm_port > 0 && fm_port != SNDRV_AUTO_PORT) {
+			/* FM I/O */
+			snd_es18xx_config_write(chip, 0x62, fm_port >> 8);
+			snd_es18xx_config_write(chip, 0x63, fm_port & 0xff);
+		}
+		if (mpu_port > 0 && mpu_port != SNDRV_AUTO_PORT) {
+			/* MPU-401 I/O */
+			snd_es18xx_config_write(chip, 0x64, mpu_port >> 8);
+			snd_es18xx_config_write(chip, 0x65, mpu_port & 0xff);
+			/* MPU-401 IRQ */
+			snd_es18xx_config_write(chip, 0x28, chip->irq);
+		}
+		/* Audio1 IRQ */
+		snd_es18xx_config_write(chip, 0x70, chip->irq);
+		/* Audio2 IRQ */
+		snd_es18xx_config_write(chip, 0x72, chip->irq);
+		/* Audio1 DMA */
+		snd_es18xx_config_write(chip, 0x74, chip->dma1);
+		/* Audio2 DMA */
+		snd_es18xx_config_write(chip, 0x75, chip->dma2);
+
+		/* Enable Audio 1 IRQ */
+		snd_es18xx_write(chip, 0xB1, 0x50);
+		/* Enable Audio 2 IRQ */
+		snd_es18xx_mixer_write(chip, 0x7A, 0x40);
+		/* Enable Audio 1 DMA */
+		snd_es18xx_write(chip, 0xB2, 0x50);
+		/* Enable MPU and hardware volume interrupt */
+		snd_es18xx_mixer_write(chip, 0x64, 0x42);
+		/* Enable ESS wavetable input */
+		snd_es18xx_mixer_bits(chip, 0x48, 0x10, 0x10);
+	}
+	else {
+		int irqmask, dma1mask, dma2mask;
+		switch (chip->irq) {
+		case 2:
+		case 9:
+			irqmask = 0;
+			break;
+		case 5:
+			irqmask = 1;
+			break;
+		case 7:
+			irqmask = 2;
+			break;
+		case 10:
+			irqmask = 3;
+			break;
+		default:
+			snd_printk(KERN_ERR "invalid irq %d\n", chip->irq);
+			return -ENODEV;
+		}
+		switch (chip->dma1) {
+		case 0:
+			dma1mask = 1;
+			break;
+		case 1:
+			dma1mask = 2;
+			break;
+		case 3:
+			dma1mask = 3;
+			break;
+		default:
+			snd_printk(KERN_ERR "invalid dma1 %d\n", chip->dma1);
+			return -ENODEV;
+		}
+		switch (chip->dma2) {
+		case 0:
+			dma2mask = 0;
+			break;
+		case 1:
+			dma2mask = 1;
+			break;
+		case 3:
+			dma2mask = 2;
+			break;
+		case 5:
+			dma2mask = 3;
+			break;
+		default:
+			snd_printk(KERN_ERR "invalid dma2 %d\n", chip->dma2);
+			return -ENODEV;
+		}
+
+		/* Enable and set Audio 1 IRQ */
+		snd_es18xx_write(chip, 0xB1, 0x50 | (irqmask << 2));
+		/* Enable and set Audio 1 DMA */
+		snd_es18xx_write(chip, 0xB2, 0x50 | (dma1mask << 2));
+		/* Set Audio 2 DMA */
+		snd_es18xx_mixer_bits(chip, 0x7d, 0x07, 0x04 | dma2mask);
+		/* Enable Audio 2 IRQ and DMA
+		   Set capture mixer input */
+		snd_es18xx_mixer_write(chip, 0x7A, 0x68);
+		/* Enable and set hardware volume interrupt */
+		snd_es18xx_mixer_write(chip, 0x64, 0x06);
+		if (mpu_port > 0 && mpu_port != SNDRV_AUTO_PORT) {
+			/* MPU401 share irq with audio
+			   Joystick enabled
+			   FM enabled */
+			snd_es18xx_mixer_write(chip, 0x40,
+					       0x43 | (mpu_port & 0xf0) >> 1);
+		}
+		snd_es18xx_mixer_write(chip, 0x7f, ((irqmask + 1) << 1) | 0x01);
+	}
+	if (chip->caps & ES18XX_NEW_RATE) {
+		/* Change behaviour of register A1
+		   4x oversampling
+		   2nd channel DAC asynchronous */
+		snd_es18xx_mixer_write(chip, 0x71, 0x32);
+	}
+	if (!(chip->caps & ES18XX_PCM2)) {
+		/* Enable DMA FIFO */
+		snd_es18xx_write(chip, 0xB7, 0x80);
+	}
+	if (chip->caps & ES18XX_SPATIALIZER) {
+		/* Set spatializer parameters to recommended values */
+		snd_es18xx_mixer_write(chip, 0x54, 0x8f);
+		snd_es18xx_mixer_write(chip, 0x56, 0x95);
+		snd_es18xx_mixer_write(chip, 0x58, 0x94);
+		snd_es18xx_mixer_write(chip, 0x5a, 0x80);
+	}
+	/* Flip the "enable I2S" bits for those chipsets that need it */
+	switch (chip->version) {
+	case 0x1879:
+		//Leaving I2S enabled on the 1879 screws up the PCM playback (rate effected somehow)
+		//so a Switch control has been added to toggle this 0x71 bit on/off:
+		//snd_es18xx_mixer_bits(chip, 0x71, 0x40, 0x40);
+		/* Note: we fall through on purpose here. */
+	case 0x1878:
+		snd_es18xx_config_write(chip, 0x29, snd_es18xx_config_read(chip, 0x29) | 0x40);
+		break;
+	}
+	/* Mute input source */
+	if (chip->caps & ES18XX_MUTEREC)
+		mask = 0x10;
+	if (chip->caps & ES18XX_RECMIX)
+		snd_es18xx_mixer_write(chip, 0x1c, 0x05 | mask);
+	else {
+		snd_es18xx_mixer_write(chip, 0x1c, 0x00 | mask);
+		snd_es18xx_write(chip, 0xb4, 0x00);
+	}
+#ifndef AVOID_POPS
+	/* Enable PCM output */
+	snd_es18xx_dsp_command(chip, 0xD1);
+#endif
+
+        return 0;
+}
+
+static int snd_es18xx_identify(struct snd_es18xx *chip)
+{
+	int hi,lo;
+
+	/* reset */
+	if (snd_es18xx_reset(chip) < 0) {
+		snd_printk(KERN_ERR "reset at 0x%lx failed!!!\n", chip->port);
+		return -ENODEV;
+	}
+
+	snd_es18xx_dsp_command(chip, 0xe7);
+	hi = snd_es18xx_dsp_get_byte(chip);
+	if (hi < 0) {
+		return hi;
+	}
+	lo = snd_es18xx_dsp_get_byte(chip);
+	if ((lo & 0xf0) != 0x80) {
+		return -ENODEV;
+	}
+	if (hi == 0x48) {
+		chip->version = 0x488;
+		return 0;
+	}
+	if (hi != 0x68) {
+		return -ENODEV;
+	}
+	if ((lo & 0x0f) < 8) {
+		chip->version = 0x688;
+		return 0;
+	}
+			
+        outb(0x40, chip->port + 0x04);
+	udelay(10);
+	hi = inb(chip->port + 0x05);
+	udelay(10);
+	lo = inb(chip->port + 0x05);
+	if (hi != lo) {
+		chip->version = hi << 8 | lo;
+		chip->ctrl_port = inb(chip->port + 0x05) << 8;
+		udelay(10);
+		chip->ctrl_port += inb(chip->port + 0x05);
+
+		if ((chip->res_ctrl_port = request_region(chip->ctrl_port, 8, "ES18xx - CTRL")) == NULL) {
+			snd_printk(KERN_ERR PFX "unable go grab port 0x%lx\n", chip->ctrl_port);
+			return -EBUSY;
+		}
+
+		return 0;
+	}
+
+	/* If has Hardware volume */
+	if (snd_es18xx_mixer_writable(chip, 0x64, 0x04)) {
+		/* If has Audio2 */
+		if (snd_es18xx_mixer_writable(chip, 0x70, 0x7f)) {
+			/* If has volume count */
+			if (snd_es18xx_mixer_writable(chip, 0x64, 0x20)) {
+				chip->version = 0x1887;
+			} else {
+				chip->version = 0x1888;
+			}
+		} else {
+			chip->version = 0x1788;
+		}
+	}
+	else
+		chip->version = 0x1688;
+	return 0;
+}
+
+static int snd_es18xx_probe(struct snd_es18xx *chip,
+			    unsigned long mpu_port,
+			    unsigned long fm_port)
+{
+	if (snd_es18xx_identify(chip) < 0) {
+		snd_printk(KERN_ERR PFX "[0x%lx] ESS chip not found\n", chip->port);
+                return -ENODEV;
+	}
+
+	switch (chip->version) {
+	case 0x1868:
+		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_CONTROL | ES18XX_GPO_2BIT;
+		break;
+	case 0x1869:
+		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_MONO | ES18XX_MUTEREC | ES18XX_CONTROL | ES18XX_HWV | ES18XX_GPO_2BIT;
+		break;
+	case 0x1878:
+		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_I2S | ES18XX_CONTROL;
+		break;
+	case 0x1879:
+		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_I2S | ES18XX_CONTROL | ES18XX_HWV;
+		break;
+	case 0x1887:
+	case 0x1888:
+		chip->caps = ES18XX_PCM2 | ES18XX_RECMIX | ES18XX_AUXB | ES18XX_DUPLEX_SAME | ES18XX_GPO_2BIT;
+		break;
+	default:
+		snd_printk(KERN_ERR "[0x%lx] unsupported chip ES%x\n",
+                           chip->port, chip->version);
+                return -ENODEV;
+        }
+
+        snd_printd("[0x%lx] ESS%x chip found\n", chip->port, chip->version);
+
+	if (chip->dma1 == chip->dma2)
+		chip->caps &= ~(ES18XX_PCM2 | ES18XX_DUPLEX_SAME);
+
+	return snd_es18xx_initialize(chip, mpu_port, fm_port);
+}
+
+static const struct snd_pcm_ops snd_es18xx_playback_ops = {
+	.open =		snd_es18xx_playback_open,
+	.close =	snd_es18xx_playback_close,
+	.ioctl =	snd_pcm_lib_ioctl,
+	.hw_params =	snd_es18xx_playback_hw_params,
+	.hw_free =	snd_es18xx_pcm_hw_free,
+	.prepare =	snd_es18xx_playback_prepare,
+	.trigger =	snd_es18xx_playback_trigger,
+	.pointer =	snd_es18xx_playback_pointer,
+};
+
+static const struct snd_pcm_ops snd_es18xx_capture_ops = {
+	.open =		snd_es18xx_capture_open,
+	.close =	snd_es18xx_capture_close,
+	.ioctl =	snd_pcm_lib_ioctl,
+	.hw_params =	snd_es18xx_capture_hw_params,
+	.hw_free =	snd_es18xx_pcm_hw_free,
+	.prepare =	snd_es18xx_capture_prepare,
+	.trigger =	snd_es18xx_capture_trigger,
+	.pointer =	snd_es18xx_capture_pointer,
+};
+
+static int snd_es18xx_pcm(struct snd_card *card, int device)
+{
+	struct snd_es18xx *chip = card->private_data;
+        struct snd_pcm *pcm;
+	char str[16];
+	int err;
+
+	sprintf(str, "ES%x", chip->version);
+	if (chip->caps & ES18XX_PCM2)
+		err = snd_pcm_new(card, str, device, 2, 1, &pcm);
+	else
+		err = snd_pcm_new(card, str, device, 1, 1, &pcm);
+        if (err < 0)
+                return err;
+
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es18xx_playback_ops);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es18xx_capture_ops);
+
+	/* global setup */
+        pcm->private_data = chip;
+        pcm->info_flags = 0;
+	if (chip->caps & ES18XX_DUPLEX_SAME)
+		pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
+	if (! (chip->caps & ES18XX_PCM2))
+		pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
+	sprintf(pcm->name, "ESS AudioDrive ES%x", chip->version);
+        chip->pcm = pcm;
+
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+					      snd_dma_isa_data(),
+					      64*1024,
+					      chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
+	return 0;
+}
+
+/* Power Management support functions */
+#ifdef CONFIG_PM
+static int snd_es18xx_suspend(struct snd_card *card, pm_message_t state)
+{
+	struct snd_es18xx *chip = card->private_data;
+
+	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+
+	snd_pcm_suspend_all(chip->pcm);
+
+	/* power down */
+	chip->pm_reg = (unsigned char)snd_es18xx_read(chip, ES18XX_PM);
+	chip->pm_reg |= (ES18XX_PM_FM | ES18XX_PM_SUS);
+	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg);
+	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg ^= ES18XX_PM_SUS);
+
+	return 0;
+}
+
+static int snd_es18xx_resume(struct snd_card *card)
+{
+	struct snd_es18xx *chip = card->private_data;
+
+	/* restore PM register, we won't wake till (not 0x07) i/o activity though */
+	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg ^= ES18XX_PM_FM);
+
+	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+static int snd_es18xx_free(struct snd_card *card)
+{
+	struct snd_es18xx *chip = card->private_data;
+
+	release_and_free_resource(chip->res_port);
+	release_and_free_resource(chip->res_ctrl_port);
+	release_and_free_resource(chip->res_mpu_port);
+	if (chip->irq >= 0)
+		free_irq(chip->irq, (void *) card);
+	if (chip->dma1 >= 0) {
+		disable_dma(chip->dma1);
+		free_dma(chip->dma1);
+	}
+	if (chip->dma2 >= 0 && chip->dma1 != chip->dma2) {
+		disable_dma(chip->dma2);
+		free_dma(chip->dma2);
+	}
+	return 0;
+}
+
+static int snd_es18xx_dev_free(struct snd_device *device)
+{
+	return snd_es18xx_free(device->card);
+}
+
+static int snd_es18xx_new_device(struct snd_card *card,
+				 unsigned long port,
+				 unsigned long mpu_port,
+				 unsigned long fm_port,
+				 int irq, int dma1, int dma2)
+{
+	struct snd_es18xx *chip = card->private_data;
+	static struct snd_device_ops ops = {
+		.dev_free =	snd_es18xx_dev_free,
+        };
+	int err;
+
+	spin_lock_init(&chip->reg_lock);
+ 	spin_lock_init(&chip->mixer_lock);
+        chip->port = port;
+        chip->irq = -1;
+        chip->dma1 = -1;
+        chip->dma2 = -1;
+        chip->audio2_vol = 0x00;
+	chip->active = 0;
+
+	chip->res_port = request_region(port, 16, "ES18xx");
+	if (chip->res_port == NULL) {
+		snd_es18xx_free(card);
+		snd_printk(KERN_ERR PFX "unable to grap ports 0x%lx-0x%lx\n", port, port + 16 - 1);
+		return -EBUSY;
+	}
+
+	if (request_irq(irq, snd_es18xx_interrupt, 0, "ES18xx",
+			(void *) card)) {
+		snd_es18xx_free(card);
+		snd_printk(KERN_ERR PFX "unable to grap IRQ %d\n", irq);
+		return -EBUSY;
+	}
+	chip->irq = irq;
+
+	if (request_dma(dma1, "ES18xx DMA 1")) {
+		snd_es18xx_free(card);
+		snd_printk(KERN_ERR PFX "unable to grap DMA1 %d\n", dma1);
+		return -EBUSY;
+	}
+	chip->dma1 = dma1;
+
+	if (dma2 != dma1 && request_dma(dma2, "ES18xx DMA 2")) {
+		snd_es18xx_free(card);
+		snd_printk(KERN_ERR PFX "unable to grap DMA2 %d\n", dma2);
+		return -EBUSY;
+	}
+	chip->dma2 = dma2;
+
+	if (snd_es18xx_probe(chip, mpu_port, fm_port) < 0) {
+		snd_es18xx_free(card);
+		return -ENODEV;
+	}
+	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+	if (err < 0) {
+		snd_es18xx_free(card);
+		return err;
+	}
+        return 0;
+}
+
+static int snd_es18xx_mixer(struct snd_card *card)
+{
+	struct snd_es18xx *chip = card->private_data;
+	int err;
+	unsigned int idx;
+
+	strcpy(card->mixername, chip->pcm->name);
+
+	for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_base_controls); idx++) {
+		struct snd_kcontrol *kctl;
+		kctl = snd_ctl_new1(&snd_es18xx_base_controls[idx], chip);
+		if (chip->caps & ES18XX_HWV) {
+			switch (idx) {
+			case 0:
+				chip->master_volume = kctl;
+				kctl->private_free = snd_es18xx_hwv_free;
+				break;
+			case 1:
+				chip->master_switch = kctl;
+				kctl->private_free = snd_es18xx_hwv_free;
+				break;
+			}
+		}
+		if ((err = snd_ctl_add(card, kctl)) < 0)
+			return err;
+	}
+	if (chip->caps & ES18XX_PCM2) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_pcm2_controls); idx++) {
+			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_pcm2_controls[idx], chip))) < 0)
+				return err;
+		} 
+	} else {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_pcm1_controls); idx++) {
+			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_pcm1_controls[idx], chip))) < 0)
+				return err;
+		}
+	}
+
+	if (chip->caps & ES18XX_RECMIX) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_recmix_controls); idx++) {
+			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_recmix_controls[idx], chip))) < 0)
+				return err;
+		}
+	}
+	switch (chip->version) {
+	default:
+		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_micpre1_control, chip))) < 0)
+			return err;
+		break;
+	case 0x1869:
+	case 0x1879:
+		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_micpre2_control, chip))) < 0)
+			return err;
+		break;
+	}
+	if (chip->caps & ES18XX_SPATIALIZER) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_spatializer_controls); idx++) {
+			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_spatializer_controls[idx], chip))) < 0)
+				return err;
+		}
+	}
+	if (chip->caps & ES18XX_HWV) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_hw_volume_controls); idx++) {
+			struct snd_kcontrol *kctl;
+			kctl = snd_ctl_new1(&snd_es18xx_hw_volume_controls[idx], chip);
+			if (idx == 0)
+				chip->hw_volume = kctl;
+			else
+				chip->hw_switch = kctl;
+			kctl->private_free = snd_es18xx_hwv_free;
+			if ((err = snd_ctl_add(card, kctl)) < 0)
+				return err;
+			
+		}
+	}
+	/* finish initializing other chipset specific controls
+	 */
+	if (chip->version != 0x1868) {
+		err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_opt_speaker,
+						     chip));
+		if (err < 0)
+			return err;
+	}
+	if (chip->version == 0x1869) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_opt_1869); idx++) {
+			err = snd_ctl_add(card,
+					  snd_ctl_new1(&snd_es18xx_opt_1869[idx],
+						       chip));
+			if (err < 0)
+				return err;
+		}
+	} else if (chip->version == 0x1878) {
+		err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_opt_1878,
+						     chip));
+		if (err < 0)
+			return err;
+	} else if (chip->version == 0x1879) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_opt_1879); idx++) {
+			err = snd_ctl_add(card,
+					  snd_ctl_new1(&snd_es18xx_opt_1879[idx],
+						       chip));
+			if (err < 0)
+				return err;
+		}
+	}
+	if (chip->caps & ES18XX_GPO_2BIT) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_opt_gpo_2bit); idx++) {
+			err = snd_ctl_add(card,
+					  snd_ctl_new1(&snd_es18xx_opt_gpo_2bit[idx],
+						       chip));
+			if (err < 0)
+				return err;
+		}
+	}
+	return 0;
+}
+       
+
+/* Card level */
+
+MODULE_AUTHOR("Christian Fischbach <fishbach@pool.informatik.rwth-aachen.de>, Abramo Bagnara <abramo@alsa-project.org>");  
+MODULE_DESCRIPTION("ESS ES18xx AudioDrive");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{ESS,ES1868 PnP AudioDrive},"
+		"{ESS,ES1869 PnP AudioDrive},"
+		"{ESS,ES1878 PnP AudioDrive},"
+		"{ESS,ES1879 PnP AudioDrive},"
+		"{ESS,ES1887 PnP AudioDrive},"
+		"{ESS,ES1888 PnP AudioDrive},"
+		"{ESS,ES1887 AudioDrive},"
+		"{ESS,ES1888 AudioDrive}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP; /* Enable this card */
+#ifdef CONFIG_PNP
+static bool isapnp[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP;
+#endif
+static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260,0x280 */
+#ifndef CONFIG_PNP
+static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
+#else
+static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
+#endif
+static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
+static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
+static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
+static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for ES18xx soundcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for ES18xx soundcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable ES18xx soundcard.");
+#ifdef CONFIG_PNP
+module_param_array(isapnp, bool, NULL, 0444);
+MODULE_PARM_DESC(isapnp, "PnP detection for specified soundcard.");
+#endif
+module_param_hw_array(port, long, ioport, NULL, 0444);
+MODULE_PARM_DESC(port, "Port # for ES18xx driver.");
+module_param_hw_array(mpu_port, long, ioport, NULL, 0444);
+MODULE_PARM_DESC(mpu_port, "MPU-401 port # for ES18xx driver.");
+module_param_hw_array(fm_port, long, ioport, NULL, 0444);
+MODULE_PARM_DESC(fm_port, "FM port # for ES18xx driver.");
+module_param_hw_array(irq, int, irq, NULL, 0444);
+MODULE_PARM_DESC(irq, "IRQ # for ES18xx driver.");
+module_param_hw_array(dma1, int, dma, NULL, 0444);
+MODULE_PARM_DESC(dma1, "DMA 1 # for ES18xx driver.");
+module_param_hw_array(dma2, int, dma, NULL, 0444);
+MODULE_PARM_DESC(dma2, "DMA 2 # for ES18xx driver.");
+
+#ifdef CONFIG_PNP
+static int isa_registered;
+static int pnp_registered;
+static int pnpc_registered;
+
+static const struct pnp_device_id snd_audiodrive_pnpbiosids[] = {
+	{ .id = "ESS1869" },
+	{ .id = "ESS1879" },
+	{ .id = "" }		/* end */
+};
+
+MODULE_DEVICE_TABLE(pnp, snd_audiodrive_pnpbiosids);
+
+/* PnP main device initialization */
+static int snd_audiodrive_pnp_init_main(int dev, struct pnp_dev *pdev)
+{
+	if (pnp_activate_dev(pdev) < 0) {
+		snd_printk(KERN_ERR PFX "PnP configure failure (out of resources?)\n");
+		return -EBUSY;
+	}
+	/* ok. hack using Vendor-Defined Card-Level registers */
+	/* skip csn and logdev initialization - already done in isapnp_configure */
+	if (pnp_device_is_isapnp(pdev)) {
+		isapnp_cfg_begin(isapnp_card_number(pdev), isapnp_csn_number(pdev));
+		isapnp_write_byte(0x27, pnp_irq(pdev, 0));	/* Hardware Volume IRQ Number */
+		if (mpu_port[dev] != SNDRV_AUTO_PORT)
+			isapnp_write_byte(0x28, pnp_irq(pdev, 0)); /* MPU-401 IRQ Number */
+		isapnp_write_byte(0x72, pnp_irq(pdev, 0));	/* second IRQ */
+		isapnp_cfg_end();
+	}
+	port[dev] = pnp_port_start(pdev, 0);
+	fm_port[dev] = pnp_port_start(pdev, 1);
+	mpu_port[dev] = pnp_port_start(pdev, 2);
+	dma1[dev] = pnp_dma(pdev, 0);
+	dma2[dev] = pnp_dma(pdev, 1);
+	irq[dev] = pnp_irq(pdev, 0);
+	snd_printdd("PnP ES18xx: port=0x%lx, fm port=0x%lx, mpu port=0x%lx\n", port[dev], fm_port[dev], mpu_port[dev]);
+	snd_printdd("PnP ES18xx: dma1=%i, dma2=%i, irq=%i\n", dma1[dev], dma2[dev], irq[dev]);
+	return 0;
+}
+
+static int snd_audiodrive_pnp(int dev, struct snd_es18xx *chip,
+			      struct pnp_dev *pdev)
+{
+	chip->dev = pdev;
+	if (snd_audiodrive_pnp_init_main(dev, chip->dev) < 0)
+		return -EBUSY;
+	return 0;
+}
+
+static const struct pnp_card_device_id snd_audiodrive_pnpids[] = {
+	/* ESS 1868 (integrated on Compaq dual P-Pro motherboard and Genius 18PnP 3D) */
+	{ .id = "ESS1868", .devs = { { "ESS1868" }, { "ESS0000" } } },
+	/* ESS 1868 (integrated on Maxisound Cards) */
+	{ .id = "ESS1868", .devs = { { "ESS8601" }, { "ESS8600" } } },
+	/* ESS 1868 (integrated on Maxisound Cards) */
+	{ .id = "ESS1868", .devs = { { "ESS8611" }, { "ESS8610" } } },
+	/* ESS ES1869 Plug and Play AudioDrive */
+	{ .id = "ESS0003", .devs = { { "ESS1869" }, { "ESS0006" } } },
+	/* ESS 1869 */
+	{ .id = "ESS1869", .devs = { { "ESS1869" }, { "ESS0006" } } },
+	/* ESS 1878 */
+	{ .id = "ESS1878", .devs = { { "ESS1878" }, { "ESS0004" } } },
+	/* ESS 1879 */
+	{ .id = "ESS1879", .devs = { { "ESS1879" }, { "ESS0009" } } },
+	/* --- */
+	{ .id = "" } /* end */
+};
+
+MODULE_DEVICE_TABLE(pnp_card, snd_audiodrive_pnpids);
+
+static int snd_audiodrive_pnpc(int dev, struct snd_es18xx *chip,
+			       struct pnp_card_link *card,
+			       const struct pnp_card_device_id *id)
+{
+	chip->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
+	if (chip->dev == NULL)
+		return -EBUSY;
+
+	chip->devc = pnp_request_card_device(card, id->devs[1].id, NULL);
+	if (chip->devc == NULL)
+		return -EBUSY;
+
+	/* Control port initialization */
+	if (pnp_activate_dev(chip->devc) < 0) {
+		snd_printk(KERN_ERR PFX "PnP control configure failure (out of resources?)\n");
+		return -EAGAIN;
+	}
+	snd_printdd("pnp: port=0x%llx\n",
+			(unsigned long long)pnp_port_start(chip->devc, 0));
+	if (snd_audiodrive_pnp_init_main(dev, chip->dev) < 0)
+		return -EBUSY;
+
+	return 0;
+}
+#endif /* CONFIG_PNP */
+
+#ifdef CONFIG_PNP
+#define is_isapnp_selected(dev)		isapnp[dev]
+#else
+#define is_isapnp_selected(dev)		0
+#endif
+
+static int snd_es18xx_card_new(struct device *pdev, int dev,
+			       struct snd_card **cardp)
+{
+	return snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
+			    sizeof(struct snd_es18xx), cardp);
+}
+
+static int snd_audiodrive_probe(struct snd_card *card, int dev)
+{
+	struct snd_es18xx *chip = card->private_data;
+	struct snd_opl3 *opl3;
+	int err;
+
+	err = snd_es18xx_new_device(card,
+				    port[dev], mpu_port[dev], fm_port[dev],
+				    irq[dev], dma1[dev], dma2[dev]);
+	if (err < 0)
+		return err;
+
+	sprintf(card->driver, "ES%x", chip->version);
+	
+	sprintf(card->shortname, "ESS AudioDrive ES%x", chip->version);
+	if (dma1[dev] != dma2[dev])
+		sprintf(card->longname, "%s at 0x%lx, irq %d, dma1 %d, dma2 %d",
+			card->shortname,
+			chip->port,
+			irq[dev], dma1[dev], dma2[dev]);
+	else
+		sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
+			card->shortname,
+			chip->port,
+			irq[dev], dma1[dev]);
+
+	err = snd_es18xx_pcm(card, 0);
+	if (err < 0)
+		return err;
+
+	err = snd_es18xx_mixer(card);
+	if (err < 0)
+		return err;
+
+	if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
+		if (snd_opl3_create(card, fm_port[dev], fm_port[dev] + 2,
+				    OPL3_HW_OPL3, 0, &opl3) < 0) {
+			snd_printk(KERN_WARNING PFX
+				   "opl3 not detected at 0x%lx\n",
+				   fm_port[dev]);
+		} else {
+			err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
+			if (err < 0)
+				return err;
+		}
+	}
+
+	if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
+		err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES18XX,
+					  mpu_port[dev], MPU401_INFO_IRQ_HOOK,
+					  -1, &chip->rmidi);
+		if (err < 0)
+			return err;
+	}
+
+	return snd_card_register(card);
+}
+
+static int snd_es18xx_isa_match(struct device *pdev, unsigned int dev)
+{
+	return enable[dev] && !is_isapnp_selected(dev);
+}
+
+static int snd_es18xx_isa_probe1(int dev, struct device *devptr)
+{
+	struct snd_card *card;
+	int err;
+
+	err = snd_es18xx_card_new(devptr, dev, &card);
+	if (err < 0)
+		return err;
+	if ((err = snd_audiodrive_probe(card, dev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	dev_set_drvdata(devptr, card);
+	return 0;
+}
+
+static int snd_es18xx_isa_probe(struct device *pdev, unsigned int dev)
+{
+	int err;
+	static int possible_irqs[] = {5, 9, 10, 7, 11, 12, -1};
+	static int possible_dmas[] = {1, 0, 3, 5, -1};
+
+	if (irq[dev] == SNDRV_AUTO_IRQ) {
+		if ((irq[dev] = snd_legacy_find_free_irq(possible_irqs)) < 0) {
+			snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
+			return -EBUSY;
+		}
+	}
+	if (dma1[dev] == SNDRV_AUTO_DMA) {
+		if ((dma1[dev] = snd_legacy_find_free_dma(possible_dmas)) < 0) {
+			snd_printk(KERN_ERR PFX "unable to find a free DMA1\n");
+			return -EBUSY;
+		}
+	}
+	if (dma2[dev] == SNDRV_AUTO_DMA) {
+		if ((dma2[dev] = snd_legacy_find_free_dma(possible_dmas)) < 0) {
+			snd_printk(KERN_ERR PFX "unable to find a free DMA2\n");
+			return -EBUSY;
+		}
+	}
+
+	if (port[dev] != SNDRV_AUTO_PORT) {
+		return snd_es18xx_isa_probe1(dev, pdev);
+	} else {
+		static unsigned long possible_ports[] = {0x220, 0x240, 0x260, 0x280};
+		int i;
+		for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
+			port[dev] = possible_ports[i];
+			err = snd_es18xx_isa_probe1(dev, pdev);
+			if (! err)
+				return 0;
+		}
+		return err;
+	}
+}
+
+static int snd_es18xx_isa_remove(struct device *devptr,
+				 unsigned int dev)
+{
+	snd_card_free(dev_get_drvdata(devptr));
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_es18xx_isa_suspend(struct device *dev, unsigned int n,
+				  pm_message_t state)
+{
+	return snd_es18xx_suspend(dev_get_drvdata(dev), state);
+}
+
+static int snd_es18xx_isa_resume(struct device *dev, unsigned int n)
+{
+	return snd_es18xx_resume(dev_get_drvdata(dev));
+}
+#endif
+
+#define DEV_NAME "es18xx"
+
+static struct isa_driver snd_es18xx_isa_driver = {
+	.match		= snd_es18xx_isa_match,
+	.probe		= snd_es18xx_isa_probe,
+	.remove		= snd_es18xx_isa_remove,
+#ifdef CONFIG_PM
+	.suspend	= snd_es18xx_isa_suspend,
+	.resume		= snd_es18xx_isa_resume,
+#endif
+	.driver		= {
+		.name	= DEV_NAME
+	},
+};
+
+
+#ifdef CONFIG_PNP
+static int snd_audiodrive_pnp_detect(struct pnp_dev *pdev,
+				     const struct pnp_device_id *id)
+{
+	static int dev;
+	int err;
+	struct snd_card *card;
+
+	if (pnp_device_is_isapnp(pdev))
+		return -ENOENT;	/* we have another procedure - card */
+	for (; dev < SNDRV_CARDS; dev++) {
+		if (enable[dev] && isapnp[dev])
+			break;
+	}
+	if (dev >= SNDRV_CARDS)
+		return -ENODEV;
+
+	err = snd_es18xx_card_new(&pdev->dev, dev, &card);
+	if (err < 0)
+		return err;
+	if ((err = snd_audiodrive_pnp(dev, card->private_data, pdev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	if ((err = snd_audiodrive_probe(card, dev)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	pnp_set_drvdata(pdev, card);
+	dev++;
+	return 0;
+}
+
+static void snd_audiodrive_pnp_remove(struct pnp_dev *pdev)
+{
+	snd_card_free(pnp_get_drvdata(pdev));
+}
+
+#ifdef CONFIG_PM
+static int snd_audiodrive_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
+{
+	return snd_es18xx_suspend(pnp_get_drvdata(pdev), state);
+}
+static int snd_audiodrive_pnp_resume(struct pnp_dev *pdev)
+{
+	return snd_es18xx_resume(pnp_get_drvdata(pdev));
+}
+#endif
+
+static struct pnp_driver es18xx_pnp_driver = {
+	.name = "es18xx-pnpbios",
+	.id_table = snd_audiodrive_pnpbiosids,
+	.probe = snd_audiodrive_pnp_detect,
+	.remove = snd_audiodrive_pnp_remove,
+#ifdef CONFIG_PM
+	.suspend = snd_audiodrive_pnp_suspend,
+	.resume = snd_audiodrive_pnp_resume,
+#endif
+};
+
+static int snd_audiodrive_pnpc_detect(struct pnp_card_link *pcard,
+				      const struct pnp_card_device_id *pid)
+{
+	static int dev;
+	struct snd_card *card;
+	int res;
+
+	for ( ; dev < SNDRV_CARDS; dev++) {
+		if (enable[dev] && isapnp[dev])
+			break;
+	}
+	if (dev >= SNDRV_CARDS)
+		return -ENODEV;
+
+	res = snd_es18xx_card_new(&pcard->card->dev, dev, &card);
+	if (res < 0)
+		return res;
+
+	if ((res = snd_audiodrive_pnpc(dev, card->private_data, pcard, pid)) < 0) {
+		snd_card_free(card);
+		return res;
+	}
+	if ((res = snd_audiodrive_probe(card, dev)) < 0) {
+		snd_card_free(card);
+		return res;
+	}
+
+	pnp_set_card_drvdata(pcard, card);
+	dev++;
+	return 0;
+}
+
+static void snd_audiodrive_pnpc_remove(struct pnp_card_link *pcard)
+{
+	snd_card_free(pnp_get_card_drvdata(pcard));
+	pnp_set_card_drvdata(pcard, NULL);
+}
+
+#ifdef CONFIG_PM
+static int snd_audiodrive_pnpc_suspend(struct pnp_card_link *pcard, pm_message_t state)
+{
+	return snd_es18xx_suspend(pnp_get_card_drvdata(pcard), state);
+}
+
+static int snd_audiodrive_pnpc_resume(struct pnp_card_link *pcard)
+{
+	return snd_es18xx_resume(pnp_get_card_drvdata(pcard));
+}
+
+#endif
+
+static struct pnp_card_driver es18xx_pnpc_driver = {
+	.flags = PNP_DRIVER_RES_DISABLE,
+	.name = "es18xx",
+	.id_table = snd_audiodrive_pnpids,
+	.probe = snd_audiodrive_pnpc_detect,
+	.remove = snd_audiodrive_pnpc_remove,
+#ifdef CONFIG_PM
+	.suspend	= snd_audiodrive_pnpc_suspend,
+	.resume		= snd_audiodrive_pnpc_resume,
+#endif
+};
+#endif /* CONFIG_PNP */
+
+static int __init alsa_card_es18xx_init(void)
+{
+	int err;
+
+	err = isa_register_driver(&snd_es18xx_isa_driver, SNDRV_CARDS);
+#ifdef CONFIG_PNP
+	if (!err)
+		isa_registered = 1;
+
+	err = pnp_register_driver(&es18xx_pnp_driver);
+	if (!err)
+		pnp_registered = 1;
+
+	err = pnp_register_card_driver(&es18xx_pnpc_driver);
+	if (!err)
+		pnpc_registered = 1;
+
+	if (isa_registered || pnp_registered)
+		err = 0;
+#endif
+	return err;
+}
+
+static void __exit alsa_card_es18xx_exit(void)
+{
+#ifdef CONFIG_PNP
+	if (pnpc_registered)
+		pnp_unregister_card_driver(&es18xx_pnpc_driver);
+	if (pnp_registered)
+		pnp_unregister_driver(&es18xx_pnp_driver);
+	if (isa_registered)
+#endif
+		isa_unregister_driver(&snd_es18xx_isa_driver);
+}
+
+module_init(alsa_card_es18xx_init)
+module_exit(alsa_card_es18xx_exit)