ALSA: wss_lib: move cs4231_lib into wss_lib

Move the file sound/isa/cs423x/cs4231_lib.c
into sound/isa/cs423x/wss_lib.c
This is the first step toward merging all libraries
for Windows Sound System compatible chips
into a single library.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Reviewed-by: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

2 files changed, 0 insertions, 1947 deletions

diff --git a/sound/isa/cs423x/Makefile b/sound/isa/cs423x/Makefile
index 5067ee00193..5870ca21ab5 100644
--- a/sound/isa/cs423x/Makefile
+++ b/sound/isa/cs423x/Makefile
@@ -3,14 +3,12 @@
 # Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
 #
 
-snd-cs4231-lib-objs := cs4231_lib.o
 snd-cs4236-lib-objs := cs4236_lib.o
 snd-cs4231-objs := cs4231.o
 snd-cs4232-objs := cs4232.o
 snd-cs4236-objs := cs4236.o
 
 # Toplevel Module Dependency
-obj-$(CONFIG_SND_CS4231_LIB) += snd-cs4231-lib.o
 obj-$(CONFIG_SND_CS4231) += snd-cs4231.o
 obj-$(CONFIG_SND_CS4232) += snd-cs4232.o
 obj-$(CONFIG_SND_CS4236) += snd-cs4236.o snd-cs4236-lib.o
diff --git a/sound/isa/cs423x/cs4231_lib.c b/sound/isa/cs423x/cs4231_lib.c
deleted file mode 100644
index 521db705d17..00000000000
--- a/sound/isa/cs423x/cs4231_lib.c
+++ /dev/null
@@ -1,1945 +0,0 @@
-/*
- *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
- *  Routines for control of CS4231(A)/CS4232/InterWave & compatible chips
- *
- *  Bugs:
- *     - sometimes record brokes playback with WSS portion of 
- *       Yamaha OPL3-SA3 chip
- *     - CS4231 (GUS MAX) - still trouble with occasional noises
- *                        - broken initialization?
- *
- *   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 <linux/delay.h>
-#include <linux/pm.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <sound/core.h>
-#include <sound/cs4231.h>
-#include <sound/pcm_params.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/irq.h>
-
-MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
-MODULE_DESCRIPTION("Routines for control of CS4231(A)/CS4232/InterWave & compatible chips");
-MODULE_LICENSE("GPL");
-
-#if 0
-#define SNDRV_DEBUG_MCE
-#endif
-
-/*
- *  Some variables
- */
-
-static unsigned char freq_bits[14] = {
-	/* 5510 */	0x00 | CS4231_XTAL2,
-	/* 6620 */	0x0E | CS4231_XTAL2,
-	/* 8000 */	0x00 | CS4231_XTAL1,
-	/* 9600 */	0x0E | CS4231_XTAL1,
-	/* 11025 */	0x02 | CS4231_XTAL2,
-	/* 16000 */	0x02 | CS4231_XTAL1,
-	/* 18900 */	0x04 | CS4231_XTAL2,
-	/* 22050 */	0x06 | CS4231_XTAL2,
-	/* 27042 */	0x04 | CS4231_XTAL1,
-	/* 32000 */	0x06 | CS4231_XTAL1,
-	/* 33075 */	0x0C | CS4231_XTAL2,
-	/* 37800 */	0x08 | CS4231_XTAL2,
-	/* 44100 */	0x0A | CS4231_XTAL2,
-	/* 48000 */	0x0C | CS4231_XTAL1
-};
-
-static unsigned int rates[14] = {
-	5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
-	27042, 32000, 33075, 37800, 44100, 48000
-};
-
-static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
-	.count = ARRAY_SIZE(rates),
-	.list = rates,
-	.mask = 0,
-};
-
-static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
-{
-	return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
-}
-
-static unsigned char snd_cs4231_original_image[32] =
-{
-	0x00,			/* 00/00 - lic */
-	0x00,			/* 01/01 - ric */
-	0x9f,			/* 02/02 - la1ic */
-	0x9f,			/* 03/03 - ra1ic */
-	0x9f,			/* 04/04 - la2ic */
-	0x9f,			/* 05/05 - ra2ic */
-	0xbf,			/* 06/06 - loc */
-	0xbf,			/* 07/07 - roc */
-	0x20,			/* 08/08 - pdfr */
-	CS4231_AUTOCALIB,	/* 09/09 - ic */
-	0x00,			/* 0a/10 - pc */
-	0x00,			/* 0b/11 - ti */
-	CS4231_MODE2,		/* 0c/12 - mi */
-	0xfc,			/* 0d/13 - lbc */
-	0x00,			/* 0e/14 - pbru */
-	0x00,			/* 0f/15 - pbrl */
-	0x80,			/* 10/16 - afei */
-	0x01,			/* 11/17 - afeii */
-	0x9f,			/* 12/18 - llic */
-	0x9f,			/* 13/19 - rlic */
-	0x00,			/* 14/20 - tlb */
-	0x00,			/* 15/21 - thb */
-	0x00,			/* 16/22 - la3mic/reserved */
-	0x00,			/* 17/23 - ra3mic/reserved */
-	0x00,			/* 18/24 - afs */
-	0x00,			/* 19/25 - lamoc/version */
-	0xcf,			/* 1a/26 - mioc */
-	0x00,			/* 1b/27 - ramoc/reserved */
-	0x20,			/* 1c/28 - cdfr */
-	0x00,			/* 1d/29 - res4 */
-	0x00,			/* 1e/30 - cbru */
-	0x00,			/* 1f/31 - cbrl */
-};
-
-static unsigned char snd_opti93x_original_image[32] =
-{
-	0x00,		/* 00/00 - l_mixout_outctrl */
-	0x00,		/* 01/01 - r_mixout_outctrl */
-	0x88,		/* 02/02 - l_cd_inctrl */
-	0x88,		/* 03/03 - r_cd_inctrl */
-	0x88,		/* 04/04 - l_a1/fm_inctrl */
-	0x88,		/* 05/05 - r_a1/fm_inctrl */
-	0x80,		/* 06/06 - l_dac_inctrl */
-	0x80,		/* 07/07 - r_dac_inctrl */
-	0x00,		/* 08/08 - ply_dataform_reg */
-	0x00,		/* 09/09 - if_conf */
-	0x00,		/* 0a/10 - pin_ctrl */
-	0x00,		/* 0b/11 - err_init_reg */
-	0x0a,		/* 0c/12 - id_reg */
-	0x00,		/* 0d/13 - reserved */
-	0x00,		/* 0e/14 - ply_upcount_reg */
-	0x00,		/* 0f/15 - ply_lowcount_reg */
-	0x88,		/* 10/16 - reserved/l_a1_inctrl */
-	0x88,		/* 11/17 - reserved/r_a1_inctrl */
-	0x88,		/* 12/18 - l_line_inctrl */
-	0x88,		/* 13/19 - r_line_inctrl */
-	0x88,		/* 14/20 - l_mic_inctrl */
-	0x88,		/* 15/21 - r_mic_inctrl */
-	0x80,		/* 16/22 - l_out_outctrl */
-	0x80,		/* 17/23 - r_out_outctrl */
-	0x00,		/* 18/24 - reserved */
-	0x00,		/* 19/25 - reserved */
-	0x00,		/* 1a/26 - reserved */
-	0x00,		/* 1b/27 - reserved */
-	0x00,		/* 1c/28 - cap_dataform_reg */
-	0x00,		/* 1d/29 - reserved */
-	0x00,		/* 1e/30 - cap_upcount_reg */
-	0x00		/* 1f/31 - cap_lowcount_reg */
-};
-
-/*
- *  Basic I/O functions
- */
-
-static inline void cs4231_outb(struct snd_cs4231 *chip, u8 offset, u8 val)
-{
-	outb(val, chip->port + offset);
-}
-
-static inline u8 cs4231_inb(struct snd_cs4231 *chip, u8 offset)
-{
-	return inb(chip->port + offset);
-}
-
-static void snd_cs4231_wait(struct snd_cs4231 *chip)
-{
-	int timeout;
-
-	for (timeout = 250;
-	     timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
-	     timeout--)
-	     	udelay(100);
-}
-
-static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
-			    unsigned char mask, unsigned char value)
-{
-	unsigned char tmp = (chip->image[reg] & mask) | value;
-
-	snd_cs4231_wait(chip);
-#ifdef CONFIG_SND_DEBUG
-	if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
-		snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
-#endif
-	chip->image[reg] = tmp;
-	if (!chip->calibrate_mute) {
-		cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
-		wmb();
-		cs4231_outb(chip, CS4231P(REG), tmp);
-		mb();
-	}
-}
-
-static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
-{
-	int timeout;
-
-	for (timeout = 250;
-	     timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
-	     timeout--)
-	     	udelay(10);
-	cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
-	cs4231_outb(chip, CS4231P(REG), value);
-	mb();
-}
-
-void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
-{
-	snd_cs4231_wait(chip);
-#ifdef CONFIG_SND_DEBUG
-	if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
-		snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
-#endif
-	cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
-	cs4231_outb(chip, CS4231P(REG), value);
-	chip->image[reg] = value;
-	mb();
-	snd_printdd("codec out - reg 0x%x = 0x%x\n",
-			chip->mce_bit | reg, value);
-}
-
-unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
-{
-	snd_cs4231_wait(chip);
-#ifdef CONFIG_SND_DEBUG
-	if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
-		snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
-#endif
-	cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
-	mb();
-	return cs4231_inb(chip, CS4231P(REG));
-}
-
-void snd_cs4236_ext_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char val)
-{
-	cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
-	cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
-	cs4231_outb(chip, CS4231P(REG), val);
-	chip->eimage[CS4236_REG(reg)] = val;
-#if 0
-	printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
-#endif
-}
-
-unsigned char snd_cs4236_ext_in(struct snd_cs4231 *chip, unsigned char reg)
-{
-	cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
-	cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
-#if 1
-	return cs4231_inb(chip, CS4231P(REG));
-#else
-	{
-		unsigned char res;
-		res = cs4231_inb(chip, CS4231P(REG));
-		printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
-		return res;
-	}
-#endif
-}
-
-#if 0
-
-static void snd_cs4231_debug(struct snd_cs4231 *chip)
-{
-	printk("CS4231 REGS:      INDEX = 0x%02x  ", cs4231_inb(chip, CS4231P(REGSEL)));
-	printk("                 STATUS = 0x%02x\n", cs4231_inb(chip, CS4231P(STATUS)));
-	printk("  0x00: left input      = 0x%02x  ", snd_cs4231_in(chip, 0x00));
-	printk("  0x10: alt 1 (CFIG 2)  = 0x%02x\n", snd_cs4231_in(chip, 0x10));
-	printk("  0x01: right input     = 0x%02x  ", snd_cs4231_in(chip, 0x01));
-	printk("  0x11: alt 2 (CFIG 3)  = 0x%02x\n", snd_cs4231_in(chip, 0x11));
-	printk("  0x02: GF1 left input  = 0x%02x  ", snd_cs4231_in(chip, 0x02));
-	printk("  0x12: left line in    = 0x%02x\n", snd_cs4231_in(chip, 0x12));
-	printk("  0x03: GF1 right input = 0x%02x  ", snd_cs4231_in(chip, 0x03));
-	printk("  0x13: right line in   = 0x%02x\n", snd_cs4231_in(chip, 0x13));
-	printk("  0x04: CD left input   = 0x%02x  ", snd_cs4231_in(chip, 0x04));
-	printk("  0x14: timer low       = 0x%02x\n", snd_cs4231_in(chip, 0x14));
-	printk("  0x05: CD right input  = 0x%02x  ", snd_cs4231_in(chip, 0x05));
-	printk("  0x15: timer high      = 0x%02x\n", snd_cs4231_in(chip, 0x15));
-	printk("  0x06: left output     = 0x%02x  ", snd_cs4231_in(chip, 0x06));
-	printk("  0x16: left MIC (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x16));
-	printk("  0x07: right output    = 0x%02x  ", snd_cs4231_in(chip, 0x07));
-	printk("  0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
-	printk("  0x08: playback format = 0x%02x  ", snd_cs4231_in(chip, 0x08));
-	printk("  0x18: IRQ status      = 0x%02x\n", snd_cs4231_in(chip, 0x18));
-	printk("  0x09: iface (CFIG 1)  = 0x%02x  ", snd_cs4231_in(chip, 0x09));
-	printk("  0x19: left line out   = 0x%02x\n", snd_cs4231_in(chip, 0x19));
-	printk("  0x0a: pin control     = 0x%02x  ", snd_cs4231_in(chip, 0x0a));
-	printk("  0x1a: mono control    = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
-	printk("  0x0b: init & status   = 0x%02x  ", snd_cs4231_in(chip, 0x0b));
-	printk("  0x1b: right line out  = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
-	printk("  0x0c: revision & mode = 0x%02x  ", snd_cs4231_in(chip, 0x0c));
-	printk("  0x1c: record format   = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
-	printk("  0x0d: loopback        = 0x%02x  ", snd_cs4231_in(chip, 0x0d));
-	printk("  0x1d: var freq (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
-	printk("  0x0e: ply upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0e));
-	printk("  0x1e: ply lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
-	printk("  0x0f: rec upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0f));
-	printk("  0x1f: rec lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
-}
-
-#endif
-
-/*
- *  CS4231 detection / MCE routines
- */
-
-static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
-{
-	int timeout;
-
-	/* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
-	for (timeout = 5; timeout > 0; timeout--)
-		cs4231_inb(chip, CS4231P(REGSEL));
-	/* end of cleanup sequence */
-	for (timeout = 250;
-	     timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
-	     timeout--)
-	     	udelay(10);
-}
-
-void snd_cs4231_mce_up(struct snd_cs4231 *chip)
-{
-	unsigned long flags;
-	int timeout;
-
-	snd_cs4231_wait(chip);
-#ifdef CONFIG_SND_DEBUG
-	if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
-		snd_printk("mce_up - auto calibration time out (0)\n");
-#endif
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	chip->mce_bit |= CS4231_MCE;
-	timeout = cs4231_inb(chip, CS4231P(REGSEL));
-	if (timeout == 0x80)
-		snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
-	if (!(timeout & CS4231_MCE))
-		cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-}
-
-void snd_cs4231_mce_down(struct snd_cs4231 *chip)
-{
-	unsigned long flags;
-	unsigned long end_time;
-	int timeout;
-
-	snd_cs4231_busy_wait(chip);
-
-#ifdef CONFIG_SND_DEBUG
-	if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
-		snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
-#endif
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	chip->mce_bit &= ~CS4231_MCE;
-	timeout = cs4231_inb(chip, CS4231P(REGSEL));
-	cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	if (timeout == 0x80)
-		snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
-	if ((timeout & CS4231_MCE) == 0 ||
-	    !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
-		return;
-	}
-
-	/*
-	 * Wait for (possible -- during init auto-calibration may not be set)
-	 * calibration process to start. Needs upto 5 sample periods on AD1848
-	 * which at the slowest possible rate of 5.5125 kHz means 907 us.
-	 */
-	msleep(1);
-
-	snd_printdd("(1) jiffies = %lu\n", jiffies);
-
-	/* check condition up to 250 ms */
-	end_time = jiffies + msecs_to_jiffies(250);
-	while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
-		CS4231_CALIB_IN_PROGRESS) {
-
-		if (time_after(jiffies, end_time)) {
-			snd_printk(KERN_ERR "mce_down - "
-					"auto calibration time out (2)\n");
-			return;
-		}
-		msleep(1);
-	}
-
-	snd_printdd("(2) jiffies = %lu\n", jiffies);
-
-	/* check condition up to 100 ms */
-	end_time = jiffies + msecs_to_jiffies(100);
-	while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
-		if (time_after(jiffies, end_time)) {
-			snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
-			return;
-		}
-		msleep(1);
-	}
-
-	snd_printdd("(3) jiffies = %lu\n", jiffies);
-	snd_printd("mce_down - exit = 0x%x\n", cs4231_inb(chip, CS4231P(REGSEL)));
-}
-
-static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
-{
-	switch (format & 0xe0) {
-	case CS4231_LINEAR_16:
-	case CS4231_LINEAR_16_BIG:
-		size >>= 1;
-		break;
-	case CS4231_ADPCM_16:
-		return size >> 2;
-	}
-	if (format & CS4231_STEREO)
-		size >>= 1;
-	return size;
-}
-
-static int snd_cs4231_trigger(struct snd_pcm_substream *substream,
-			      int cmd)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	int result = 0;
-	unsigned int what;
-	struct snd_pcm_substream *s;
-	int do_start;
-
-#if 0
-	printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, cs4231_inb(chip, CS4231P(STATUS)));
-#endif
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-	case SNDRV_PCM_TRIGGER_RESUME:
-		do_start = 1; break;
-	case SNDRV_PCM_TRIGGER_STOP:
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-		do_start = 0; break;
-	default:
-		return -EINVAL;
-	}
-
-	what = 0;
-	snd_pcm_group_for_each_entry(s, substream) {
-		if (s == chip->playback_substream) {
-			what |= CS4231_PLAYBACK_ENABLE;
-			snd_pcm_trigger_done(s, substream);
-		} else if (s == chip->capture_substream) {
-			what |= CS4231_RECORD_ENABLE;
-			snd_pcm_trigger_done(s, substream);
-		}
-	}
-	spin_lock(&chip->reg_lock);
-	if (do_start) {
-		chip->image[CS4231_IFACE_CTRL] |= what;
-		if (chip->trigger)
-			chip->trigger(chip, what, 1);
-	} else {
-		chip->image[CS4231_IFACE_CTRL] &= ~what;
-		if (chip->trigger)
-			chip->trigger(chip, what, 0);
-	}
-	snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
-	spin_unlock(&chip->reg_lock);
-#if 0
-	snd_cs4231_debug(chip);
-#endif
-	return result;
-}
-
-/*
- *  CODEC I/O
- */
-
-static unsigned char snd_cs4231_get_rate(unsigned int rate)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(rates); i++)
-		if (rate == rates[i])
-			return freq_bits[i];
-	// snd_BUG();
-	return freq_bits[ARRAY_SIZE(rates) - 1];
-}
-
-static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip,
-				           int format,
-                                           int channels)
-{
-	unsigned char rformat;
-
-	rformat = CS4231_LINEAR_8;
-	switch (format) {
-	case SNDRV_PCM_FORMAT_MU_LAW:	rformat = CS4231_ULAW_8; break;
-	case SNDRV_PCM_FORMAT_A_LAW:	rformat = CS4231_ALAW_8; break;
-	case SNDRV_PCM_FORMAT_S16_LE:	rformat = CS4231_LINEAR_16; break;
-	case SNDRV_PCM_FORMAT_S16_BE:	rformat = CS4231_LINEAR_16_BIG; break;
-	case SNDRV_PCM_FORMAT_IMA_ADPCM:	rformat = CS4231_ADPCM_16; break;
-	}
-	if (channels > 1)
-		rformat |= CS4231_STEREO;
-#if 0
-	snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
-#endif
-	return rformat;
-}
-
-static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
-{
-	unsigned long flags;
-
-	mute = mute ? 1 : 0;
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	if (chip->calibrate_mute == mute) {
-		spin_unlock_irqrestore(&chip->reg_lock, flags);
-		return;
-	}
-	if (!mute) {
-		snd_cs4231_dout(chip, CS4231_LEFT_INPUT, chip->image[CS4231_LEFT_INPUT]);
-		snd_cs4231_dout(chip, CS4231_RIGHT_INPUT, chip->image[CS4231_RIGHT_INPUT]);
-		snd_cs4231_dout(chip, CS4231_LOOPBACK, chip->image[CS4231_LOOPBACK]);
-	}
-	snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
-	snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
-	snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
-	snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
-	snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
-	snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
-	snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN, mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
-	snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN, mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
-	snd_cs4231_dout(chip, CS4231_MONO_CTRL, mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
-	if (chip->hardware == CS4231_HW_INTERWAVE) {
-		snd_cs4231_dout(chip, CS4231_LEFT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_LEFT_MIC_INPUT]);
-		snd_cs4231_dout(chip, CS4231_RIGHT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_MIC_INPUT]);		
-		snd_cs4231_dout(chip, CS4231_LINE_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_LEFT_OUTPUT]);
-		snd_cs4231_dout(chip, CS4231_LINE_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_RIGHT_OUTPUT]);
-	}
-	chip->calibrate_mute = mute;
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-}
-
-static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
-				       struct snd_pcm_hw_params *params,
-				       unsigned char pdfr)
-{
-	unsigned long flags;
-	int full_calib = 1;
-
-	mutex_lock(&chip->mce_mutex);
-	snd_cs4231_calibrate_mute(chip, 1);
-	if (chip->hardware == CS4231_HW_CS4231A ||
-	    (chip->hardware & CS4231_HW_CS4232_MASK)) {
-		spin_lock_irqsave(&chip->reg_lock, flags);
-		if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {	/* rate is same? */
-			snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
-			snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
-			snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
-			udelay(100); /* Fixes audible clicks at least on GUS MAX */
-			full_calib = 0;
-		}
-		spin_unlock_irqrestore(&chip->reg_lock, flags);
-	}
-	if (full_calib) {
-		snd_cs4231_mce_up(chip);
-		spin_lock_irqsave(&chip->reg_lock, flags);
-		if (chip->hardware != CS4231_HW_INTERWAVE && !chip->single_dma) {
-			snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
-					(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
-					(pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
-				        pdfr);
-		} else {
-			snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
-		}
-		spin_unlock_irqrestore(&chip->reg_lock, flags);
-		if (chip->hardware == CS4231_HW_OPL3SA2)
-			udelay(100);	/* this seems to help */
-		snd_cs4231_mce_down(chip);
-	}
-	snd_cs4231_calibrate_mute(chip, 0);
-	mutex_unlock(&chip->mce_mutex);
-}
-
-static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
-				      struct snd_pcm_hw_params *params,
-                                      unsigned char cdfr)
-{
-	unsigned long flags;
-	int full_calib = 1;
-
-	mutex_lock(&chip->mce_mutex);
-	snd_cs4231_calibrate_mute(chip, 1);
-	if (chip->hardware == CS4231_HW_CS4231A ||
-	    (chip->hardware & CS4231_HW_CS4232_MASK)) {
-		spin_lock_irqsave(&chip->reg_lock, flags);
-		if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||	/* rate is same? */
-		    (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
-			snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
-			snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT] = cdfr);
-			snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
-			full_calib = 0;
-		}
-		spin_unlock_irqrestore(&chip->reg_lock, flags);
-	}
-	if (full_calib) {
-		snd_cs4231_mce_up(chip);
-		spin_lock_irqsave(&chip->reg_lock, flags);
-		if (chip->hardware != CS4231_HW_INTERWAVE) {
-			if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
-				snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
-					       ((chip->single_dma ? cdfr : chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
-					       (cdfr & 0x0f));
-				spin_unlock_irqrestore(&chip->reg_lock, flags);
-				snd_cs4231_mce_down(chip);
-				snd_cs4231_mce_up(chip);
-				spin_lock_irqsave(&chip->reg_lock, flags);
-			}
-		}
-		snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
-		spin_unlock_irqrestore(&chip->reg_lock, flags);
-		snd_cs4231_mce_down(chip);
-	}
-	snd_cs4231_calibrate_mute(chip, 0);
-	mutex_unlock(&chip->mce_mutex);
-}
-
-/*
- *  Timer interface
- */
-
-static unsigned long snd_cs4231_timer_resolution(struct snd_timer * timer)
-{
-	struct snd_cs4231 *chip = snd_timer_chip(timer);
-	if (chip->hardware & CS4231_HW_CS4236B_MASK)
-		return 14467;
-	else
-		return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
-}
-
-static int snd_cs4231_timer_start(struct snd_timer * timer)
-{
-	unsigned long flags;
-	unsigned int ticks;
-	struct snd_cs4231 *chip = snd_timer_chip(timer);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	ticks = timer->sticks;
-	if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
-	    (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
-	    (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
-		snd_cs4231_out(chip, CS4231_TIMER_HIGH, chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8));
-		snd_cs4231_out(chip, CS4231_TIMER_LOW, chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks);
-		snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
-	}
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	return 0;
-}
-
-static int snd_cs4231_timer_stop(struct snd_timer * timer)
-{
-	unsigned long flags;
-	struct snd_cs4231 *chip = snd_timer_chip(timer);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	return 0;
-}
-
-static void snd_cs4231_init(struct snd_cs4231 *chip)
-{
-	unsigned long flags;
-
-	snd_cs4231_mce_down(chip);
-
-#ifdef SNDRV_DEBUG_MCE
-	snd_printk("init: (1)\n");
-#endif
-	snd_cs4231_mce_up(chip);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
-			     CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
-			     CS4231_CALIB_MODE);
-	chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
-	snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	snd_cs4231_mce_down(chip);
-
-#ifdef SNDRV_DEBUG_MCE
-	snd_printk("init: (2)\n");
-#endif
-
-	snd_cs4231_mce_up(chip);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	snd_cs4231_mce_down(chip);
-
-#ifdef SNDRV_DEBUG_MCE
-	snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
-#endif
-
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-
-	snd_cs4231_mce_up(chip);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	snd_cs4231_mce_down(chip);
-
-#ifdef SNDRV_DEBUG_MCE
-	snd_printk("init: (4)\n");
-#endif
-
-	snd_cs4231_mce_up(chip);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	snd_cs4231_mce_down(chip);
-
-#ifdef SNDRV_DEBUG_MCE
-	snd_printk("init: (5)\n");
-#endif
-}
-
-static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
-{
-	unsigned long flags;
-
-	mutex_lock(&chip->open_mutex);
-	if ((chip->mode & mode) ||
-	    ((chip->mode & CS4231_MODE_OPEN) && chip->single_dma)) {
-		mutex_unlock(&chip->open_mutex);
-		return -EAGAIN;
-	}
-	if (chip->mode & CS4231_MODE_OPEN) {
-		chip->mode |= mode;
-		mutex_unlock(&chip->open_mutex);
-		return 0;
-	}
-	/* ok. now enable and ack CODEC IRQ */
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
-		       CS4231_RECORD_IRQ |
-		       CS4231_TIMER_IRQ);
-	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
-	cs4231_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
-	cs4231_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
-	chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
-	snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
-	snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
-		       CS4231_RECORD_IRQ |
-		       CS4231_TIMER_IRQ);
-	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-
-	chip->mode = mode;
-	mutex_unlock(&chip->open_mutex);
-	return 0;
-}
-
-static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
-{
-	unsigned long flags;
-
-	mutex_lock(&chip->open_mutex);
-	chip->mode &= ~mode;
-	if (chip->mode & CS4231_MODE_OPEN) {
-		mutex_unlock(&chip->open_mutex);
-		return;
-	}
-	snd_cs4231_calibrate_mute(chip, 1);
-
-	/* disable IRQ */
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
-	cs4231_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
-	cs4231_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
-	chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
-	snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
-
-	/* now disable record & playback */
-
-	if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
-					       CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
-		spin_unlock_irqrestore(&chip->reg_lock, flags);
-		snd_cs4231_mce_up(chip);
-		spin_lock_irqsave(&chip->reg_lock, flags);
-		chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
-						     CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
-		snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
-		spin_unlock_irqrestore(&chip->reg_lock, flags);
-		snd_cs4231_mce_down(chip);
-		spin_lock_irqsave(&chip->reg_lock, flags);
-	}
-
-	/* clear IRQ again */
-	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
-	cs4231_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
-	cs4231_outb(chip, CS4231P(STATUS), 0);	/* clear IRQ */
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-
-	snd_cs4231_calibrate_mute(chip, 0);
-
-	chip->mode = 0;
-	mutex_unlock(&chip->open_mutex);
-}
-
-/*
- *  timer open/close
- */
-
-static int snd_cs4231_timer_open(struct snd_timer * timer)
-{
-	struct snd_cs4231 *chip = snd_timer_chip(timer);
-	snd_cs4231_open(chip, CS4231_MODE_TIMER);
-	return 0;
-}
-
-static int snd_cs4231_timer_close(struct snd_timer * timer)
-{
-	struct snd_cs4231 *chip = snd_timer_chip(timer);
-	snd_cs4231_close(chip, CS4231_MODE_TIMER);
-	return 0;
-}
-
-static struct snd_timer_hardware snd_cs4231_timer_table =
-{
-	.flags =	SNDRV_TIMER_HW_AUTO,
-	.resolution =	9945,
-	.ticks =	65535,
-	.open =		snd_cs4231_timer_open,
-	.close =	snd_cs4231_timer_close,
-	.c_resolution = snd_cs4231_timer_resolution,
-	.start =	snd_cs4231_timer_start,
-	.stop =		snd_cs4231_timer_stop,
-};
-
-/*
- *  ok.. exported functions..
- */
-
-static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
-					 struct snd_pcm_hw_params *hw_params)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	unsigned char new_pdfr;
-	int err;
-
-	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
-		return err;
-	new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
-		   snd_cs4231_get_rate(params_rate(hw_params));
-	chip->set_playback_format(chip, hw_params, new_pdfr);
-	return 0;
-}
-
-static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
-}
-
-static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	unsigned long flags;
-	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
-	unsigned int count = snd_pcm_lib_period_bytes(substream);
-
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	chip->p_dma_size = size;
-	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
-	snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
-	count = snd_cs4231_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
-	snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
-	snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-#if 0
-	snd_cs4231_debug(chip);
-#endif
-	return 0;
-}
-
-static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
-					struct snd_pcm_hw_params *hw_params)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	unsigned char new_cdfr;
-	int err;
-
-	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
-		return err;
-	new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
-		   snd_cs4231_get_rate(params_rate(hw_params));
-	chip->set_capture_format(chip, hw_params, new_cdfr);
-	return 0;
-}
-
-static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
-}
-
-static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	unsigned long flags;
-	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
-	unsigned int count = snd_pcm_lib_period_bytes(substream);
-
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	chip->c_dma_size = size;
-	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
-	snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
-	count = snd_cs4231_get_count(chip->image[CS4231_REC_FORMAT], count) - 1;
-	if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
-		snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
-		snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
-	} else {
-		snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
-		snd_cs4231_out(chip, CS4231_REC_UPR_CNT, (unsigned char) (count >> 8));
-	}
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	return 0;
-}
-
-void snd_cs4231_overrange(struct snd_cs4231 *chip)
-{
-	unsigned long flags;
-	unsigned char res;
-
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	res = snd_cs4231_in(chip, CS4231_TEST_INIT);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	if (res & (0x08 | 0x02))	/* detect overrange only above 0dB; may be user selectable? */
-		chip->capture_substream->runtime->overrange++;
-}
-
-irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id)
-{
-	struct snd_cs4231 *chip = dev_id;
-	unsigned char status;
-
-	status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
-	if (status & CS4231_TIMER_IRQ) {
-		if (chip->timer)
-			snd_timer_interrupt(chip->timer, chip->timer->sticks);
-	}		
-	if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
-		if (status & CS4231_PLAYBACK_IRQ) {
-			if (chip->mode & CS4231_MODE_PLAY) {
-				if (chip->playback_substream)
-					snd_pcm_period_elapsed(chip->playback_substream);
-			}
-			if (chip->mode & CS4231_MODE_RECORD) {
-				if (chip->capture_substream) {
-					snd_cs4231_overrange(chip);
-					snd_pcm_period_elapsed(chip->capture_substream);
-				}
-			}
-		}
-	} else {
-		if (status & CS4231_PLAYBACK_IRQ) {
-			if (chip->playback_substream)
-				snd_pcm_period_elapsed(chip->playback_substream);
-		}
-		if (status & CS4231_RECORD_IRQ) {
-			if (chip->capture_substream) {
-				snd_cs4231_overrange(chip);
-				snd_pcm_period_elapsed(chip->capture_substream);
-			}
-		}
-	}
-
-	spin_lock(&chip->reg_lock);
-	snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
-	spin_unlock(&chip->reg_lock);
-	return IRQ_HANDLED;
-}
-
-static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	size_t ptr;
-
-	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
-		return 0;
-	ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
-	return bytes_to_frames(substream->runtime, ptr);
-}
-
-static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	size_t ptr;
-	
-	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
-		return 0;
-	ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
-	return bytes_to_frames(substream->runtime, ptr);
-}
-
-/*
-
- */
-
-static int snd_cs4231_probe(struct snd_cs4231 *chip)
-{
-	unsigned long flags;
-	int i, id, rev;
-	unsigned char *ptr;
-	unsigned int hw;
-
-#if 0
-	snd_cs4231_debug(chip);
-#endif
-	id = 0;
-	for (i = 0; i < 50; i++) {
-		mb();
-		if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
-			udelay(2000);
-		else {
-			spin_lock_irqsave(&chip->reg_lock, flags);
-			snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
-			id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
-			spin_unlock_irqrestore(&chip->reg_lock, flags);
-			if (id == 0x0a)
-				break;	/* this is valid value */
-		}
-	}
-	snd_printdd("cs4231: port = 0x%lx, id = 0x%x\n", chip->port, id);
-	if (id != 0x0a)
-		return -ENODEV;	/* no valid device found */
-
-	if (((hw = chip->hardware) & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
-		rev = snd_cs4231_in(chip, CS4231_VERSION) & 0xe7;
-		snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
-		if (rev == 0x80) {
-			unsigned char tmp = snd_cs4231_in(chip, 23);
-			snd_cs4231_out(chip, 23, ~tmp);
-			if (snd_cs4231_in(chip, 23) != tmp)
-				chip->hardware = CS4231_HW_AD1845;
-			else
-				chip->hardware = CS4231_HW_CS4231;
-		} else if (rev == 0xa0) {
-			chip->hardware = CS4231_HW_CS4231A;
-		} else if (rev == 0xa2) {
-			chip->hardware = CS4231_HW_CS4232;
-		} else if (rev == 0xb2) {
-			chip->hardware = CS4231_HW_CS4232A;
-		} else if (rev == 0x83) {
-			chip->hardware = CS4231_HW_CS4236;
-		} else if (rev == 0x03) {
-			chip->hardware = CS4231_HW_CS4236B;
-		} else {
-			snd_printk("unknown CS chip with version 0x%x\n", rev);
-			return -ENODEV;		/* unknown CS4231 chip? */
-		}
-	}
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	cs4231_inb(chip, CS4231P(STATUS));	/* clear any pendings IRQ */
-	cs4231_outb(chip, CS4231P(STATUS), 0);
-	mb();
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-
-	chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
-	switch (chip->hardware) {
-	case CS4231_HW_INTERWAVE:
-		chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
-		break;
-	case CS4231_HW_CS4235:
-	case CS4231_HW_CS4236B:
-	case CS4231_HW_CS4237B:
-	case CS4231_HW_CS4238B:
-	case CS4231_HW_CS4239:
-		if (hw == CS4231_HW_DETECT3)
-			chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
-		else
-			chip->hardware = CS4231_HW_CS4236;
-		break;
-	}
-
-	chip->image[CS4231_IFACE_CTRL] =
-	    (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
-	    (chip->single_dma ? CS4231_SINGLE_DMA : 0);
-	if (chip->hardware != CS4231_HW_OPTI93X) {
-		chip->image[CS4231_ALT_FEATURE_1] = 0x80;
-		chip->image[CS4231_ALT_FEATURE_2] =
-			chip->hardware == CS4231_HW_INTERWAVE ? 0xc2 : 0x01;
-	}
-	ptr = (unsigned char *) &chip->image;
-	snd_cs4231_mce_down(chip);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	for (i = 0; i < 32; i++)	/* ok.. fill all CS4231 registers */
-		snd_cs4231_out(chip, i, *ptr++);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	snd_cs4231_mce_up(chip);
-	snd_cs4231_mce_down(chip);
-
-	mdelay(2);
-
-	/* ok.. try check hardware version for CS4236+ chips */
-	if ((hw & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
-		if (chip->hardware == CS4231_HW_CS4236B) {
-			rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
-			snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
-			id = snd_cs4236_ext_in(chip, CS4236_VERSION);
-			snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
-			snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
-			if ((id & 0x1f) == 0x1d) {	/* CS4235 */
-				chip->hardware = CS4231_HW_CS4235;
-				switch (id >> 5) {
-				case 4:
-				case 5:
-				case 6:
-					break;
-				default:
-					snd_printk("unknown CS4235 chip (enhanced version = 0x%x)\n", id);
-				}
-			} else if ((id & 0x1f) == 0x0b) {	/* CS4236/B */
-				switch (id >> 5) {
-				case 4:
-				case 5:
-				case 6:
-				case 7:
-					chip->hardware = CS4231_HW_CS4236B;
-					break;
-				default:
-					snd_printk("unknown CS4236 chip (enhanced version = 0x%x)\n", id);
-				}
-			} else if ((id & 0x1f) == 0x08) {	/* CS4237B */
-				chip->hardware = CS4231_HW_CS4237B;
-				switch (id >> 5) {
-				case 4:
-				case 5:
-				case 6:
-				case 7:
-					break;
-				default:
-					snd_printk("unknown CS4237B chip (enhanced version = 0x%x)\n", id);
-				}
-			} else if ((id & 0x1f) == 0x09) {	/* CS4238B */
-				chip->hardware = CS4231_HW_CS4238B;
-				switch (id >> 5) {
-				case 5:
-				case 6:
-				case 7:
-					break;
-				default:
-					snd_printk("unknown CS4238B chip (enhanced version = 0x%x)\n", id);
-				}
-			} else if ((id & 0x1f) == 0x1e) {	/* CS4239 */
-				chip->hardware = CS4231_HW_CS4239;
-				switch (id >> 5) {
-				case 4:
-				case 5:
-				case 6:
-					break;
-				default:
-					snd_printk("unknown CS4239 chip (enhanced version = 0x%x)\n", id);
-				}
-			} else {
-				snd_printk("unknown CS4236/CS423xB chip (enhanced version = 0x%x)\n", id);
-			}
-		}
-	}
-	return 0;		/* all things are ok.. */
-}
-
-/*
-
- */
-
-static struct snd_pcm_hardware snd_cs4231_playback =
-{
-	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
-				 SNDRV_PCM_INFO_MMAP_VALID |
-				 SNDRV_PCM_INFO_RESUME |
-				 SNDRV_PCM_INFO_SYNC_START),
-	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
-				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
-	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
-	.rate_min =		5510,
-	.rate_max =		48000,
-	.channels_min =		1,
-	.channels_max =		2,
-	.buffer_bytes_max =	(128*1024),
-	.period_bytes_min =	64,
-	.period_bytes_max =	(128*1024),
-	.periods_min =		1,
-	.periods_max =		1024,
-	.fifo_size =		0,
-};
-
-static struct snd_pcm_hardware snd_cs4231_capture =
-{
-	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
-				 SNDRV_PCM_INFO_MMAP_VALID |
-				 SNDRV_PCM_INFO_RESUME |
-				 SNDRV_PCM_INFO_SYNC_START),
-	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
-				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
-	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
-	.rate_min =		5510,
-	.rate_max =		48000,
-	.channels_min =		1,
-	.channels_max =		2,
-	.buffer_bytes_max =	(128*1024),
-	.period_bytes_min =	64,
-	.period_bytes_max =	(128*1024),
-	.periods_min =		1,
-	.periods_max =		1024,
-	.fifo_size =		0,
-};
-
-/*
-
- */
-
-static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	int err;
-
-	runtime->hw = snd_cs4231_playback;
-
-	/* hardware bug in InterWave chipset */
-	if (chip->hardware == CS4231_HW_INTERWAVE && chip->dma1 > 3)
-	    	runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
-	
-	/* hardware limitation of cheap chips */
-	if (chip->hardware == CS4231_HW_CS4235 ||
-	    chip->hardware == CS4231_HW_CS4239)
-		runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
-
-	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
-	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
-
-	if (chip->claim_dma) {
-		if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
-			return err;
-	}
-
-	if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
-		if (chip->release_dma)
-			chip->release_dma(chip, chip->dma_private_data, chip->dma1);
-		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
-		return err;
-	}
-	chip->playback_substream = substream;
-	snd_pcm_set_sync(substream);
-	chip->rate_constraint(runtime);
-	return 0;
-}
-
-static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	int err;
-
-	runtime->hw = snd_cs4231_capture;
-
-	/* hardware limitation of cheap chips */
-	if (chip->hardware == CS4231_HW_CS4235 ||
-	    chip->hardware == CS4231_HW_CS4239)
-		runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
-
-	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
-	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
-
-	if (chip->claim_dma) {
-		if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
-			return err;
-	}
-
-	if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
-		if (chip->release_dma)
-			chip->release_dma(chip, chip->dma_private_data, chip->dma2);
-		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
-		return err;
-	}
-	chip->capture_substream = substream;
-	snd_pcm_set_sync(substream);
-	chip->rate_constraint(runtime);
-	return 0;
-}
-
-static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-
-	chip->playback_substream = NULL;
-	snd_cs4231_close(chip, CS4231_MODE_PLAY);
-	return 0;
-}
-
-static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
-{
-	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
-
-	chip->capture_substream = NULL;
-	snd_cs4231_close(chip, CS4231_MODE_RECORD);
-	return 0;
-}
-
-#ifdef CONFIG_PM
-
-/* lowlevel suspend callback for CS4231 */
-static void snd_cs4231_suspend(struct snd_cs4231 *chip)
-{
-	int reg;
-	unsigned long flags;
-	
-	snd_pcm_suspend_all(chip->pcm);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	for (reg = 0; reg < 32; reg++)
-		chip->image[reg] = snd_cs4231_in(chip, reg);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-}
-
-/* lowlevel resume callback for CS4231 */
-static void snd_cs4231_resume(struct snd_cs4231 *chip)
-{
-	int reg;
-	unsigned long flags;
-	/* int timeout; */
-	
-	snd_cs4231_mce_up(chip);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	for (reg = 0; reg < 32; reg++) {
-		switch (reg) {
-		case CS4231_VERSION:
-			break;
-		default:
-			snd_cs4231_out(chip, reg, chip->image[reg]);
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-#if 1
-	snd_cs4231_mce_down(chip);
-#else
-	/* The following is a workaround to avoid freeze after resume on TP600E.
-	   This is the first half of copy of snd_cs4231_mce_down(), but doesn't
-	   include rescheduling.  -- iwai
-	   */
-	snd_cs4231_busy_wait(chip);
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	chip->mce_bit &= ~CS4231_MCE;
-	timeout = cs4231_inb(chip, CS4231P(REGSEL));
-	cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	if (timeout == 0x80)
-		snd_printk("down [0x%lx]: serious init problem - codec still busy\n", chip->port);
-	if ((timeout & CS4231_MCE) == 0 ||
-	    !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
-		return;
-	}
-	snd_cs4231_busy_wait(chip);
-#endif
-}
-#endif /* CONFIG_PM */
-
-static int snd_cs4231_free(struct snd_cs4231 *chip)
-{
-	release_and_free_resource(chip->res_port);
-	release_and_free_resource(chip->res_cport);
-	if (chip->irq >= 0) {
-		disable_irq(chip->irq);
-		if (!(chip->hwshare & CS4231_HWSHARE_IRQ))
-			free_irq(chip->irq, (void *) chip);
-	}
-	if (!(chip->hwshare & CS4231_HWSHARE_DMA1) && chip->dma1 >= 0) {
-		snd_dma_disable(chip->dma1);
-		free_dma(chip->dma1);
-	}
-	if (!(chip->hwshare & CS4231_HWSHARE_DMA2) && chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
-		snd_dma_disable(chip->dma2);
-		free_dma(chip->dma2);
-	}
-	if (chip->timer)
-		snd_device_free(chip->card, chip->timer);
-	kfree(chip);
-	return 0;
-}
-
-static int snd_cs4231_dev_free(struct snd_device *device)
-{
-	struct snd_cs4231 *chip = device->device_data;
-	return snd_cs4231_free(chip);	
-}
-
-const char *snd_cs4231_chip_id(struct snd_cs4231 *chip)
-{
-	switch (chip->hardware) {
-	case CS4231_HW_CS4231:	return "CS4231";
-	case CS4231_HW_CS4231A: return "CS4231A";
-	case CS4231_HW_CS4232:	return "CS4232";
-	case CS4231_HW_CS4232A:	return "CS4232A";
-	case CS4231_HW_CS4235:	return "CS4235";
-	case CS4231_HW_CS4236:  return "CS4236";
-	case CS4231_HW_CS4236B: return "CS4236B";
-	case CS4231_HW_CS4237B: return "CS4237B";
-	case CS4231_HW_CS4238B: return "CS4238B";
-	case CS4231_HW_CS4239:	return "CS4239";
-	case CS4231_HW_INTERWAVE: return "AMD InterWave";
-	case CS4231_HW_OPL3SA2: return chip->card->shortname;
-	case CS4231_HW_AD1845: return "AD1845";
-	case CS4231_HW_OPTI93X: return "OPTi 93x";
-	default: return "???";
-	}
-}
-
-static int snd_cs4231_new(struct snd_card *card,
-			  unsigned short hardware,
-			  unsigned short hwshare,
-			  struct snd_cs4231 ** rchip)
-{
-	struct snd_cs4231 *chip;
-
-	*rchip = NULL;
-	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-	if (chip == NULL)
-		return -ENOMEM;
-	chip->hardware = hardware;
-	chip->hwshare = hwshare;
-
-	spin_lock_init(&chip->reg_lock);
-	mutex_init(&chip->mce_mutex);
-	mutex_init(&chip->open_mutex);
-	chip->card = card;
-	chip->rate_constraint = snd_cs4231_xrate;
-	chip->set_playback_format = snd_cs4231_playback_format;
-	chip->set_capture_format = snd_cs4231_capture_format;
-	if (chip->hardware == CS4231_HW_OPTI93X)
-		memcpy(&chip->image, &snd_opti93x_original_image,
-		       sizeof(snd_opti93x_original_image));
-	else
-		memcpy(&chip->image, &snd_cs4231_original_image,
-		       sizeof(snd_cs4231_original_image));
-
-        *rchip = chip;
-        return 0;
-}
-
-int snd_cs4231_create(struct snd_card *card,
-	              unsigned long port,
-	              unsigned long cport,
-		      int irq, int dma1, int dma2,
-		      unsigned short hardware,
-		      unsigned short hwshare,
-		      struct snd_cs4231 ** rchip)
-{
-	static struct snd_device_ops ops = {
-		.dev_free =	snd_cs4231_dev_free,
-	};
-	struct snd_cs4231 *chip;
-	int err;
-
-	err = snd_cs4231_new(card, hardware, hwshare, &chip);
-	if (err < 0)
-		return err;
-	
-	chip->irq = -1;
-	chip->dma1 = -1;
-	chip->dma2 = -1;
-
-	if ((chip->res_port = request_region(port, 4, "CS4231")) == NULL) {
-		snd_printk(KERN_ERR "cs4231: can't grab port 0x%lx\n", port);
-		snd_cs4231_free(chip);
-		return -EBUSY;
-	}
-	chip->port = port;
-	if ((long)cport >= 0 && (chip->res_cport = request_region(cport, 8, "CS4232 Control")) == NULL) {
-		snd_printk(KERN_ERR "cs4231: can't grab control port 0x%lx\n", cport);
-		snd_cs4231_free(chip);
-		return -ENODEV;
-	}
-	chip->cport = cport;
-	if (!(hwshare & CS4231_HWSHARE_IRQ) && request_irq(irq, snd_cs4231_interrupt, IRQF_DISABLED, "CS4231", (void *) chip)) {
-		snd_printk(KERN_ERR "cs4231: can't grab IRQ %d\n", irq);
-		snd_cs4231_free(chip);
-		return -EBUSY;
-	}
-	chip->irq = irq;
-	if (!(hwshare & CS4231_HWSHARE_DMA1) && request_dma(dma1, "CS4231 - 1")) {
-		snd_printk(KERN_ERR "cs4231: can't grab DMA1 %d\n", dma1);
-		snd_cs4231_free(chip);
-		return -EBUSY;
-	}
-	chip->dma1 = dma1;
-	if (!(hwshare & CS4231_HWSHARE_DMA2) && dma1 != dma2 && dma2 >= 0 && request_dma(dma2, "CS4231 - 2")) {
-		snd_printk(KERN_ERR "cs4231: can't grab DMA2 %d\n", dma2);
-		snd_cs4231_free(chip);
-		return -EBUSY;
-	}
-	if (dma1 == dma2 || dma2 < 0) {
-		chip->single_dma = 1;
-		chip->dma2 = chip->dma1;
-	} else
-		chip->dma2 = dma2;
-
-	/* global setup */
-	if (snd_cs4231_probe(chip) < 0) {
-		snd_cs4231_free(chip);
-		return -ENODEV;
-	}
-	snd_cs4231_init(chip);
-
-#if 0
-	if (chip->hardware & CS4231_HW_CS4232_MASK) {
-		if (chip->res_cport == NULL)
-			snd_printk("CS4232 control port features are not accessible\n");
-	}
-#endif
-
-	/* Register device */
-	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
-		snd_cs4231_free(chip);
-		return err;
-	}
-
-#ifdef CONFIG_PM
-	/* Power Management */
-	chip->suspend = snd_cs4231_suspend;
-	chip->resume = snd_cs4231_resume;
-#endif
-
-	*rchip = chip;
-	return 0;
-}
-
-static struct snd_pcm_ops snd_cs4231_playback_ops = {
-	.open =		snd_cs4231_playback_open,
-	.close =	snd_cs4231_playback_close,
-	.ioctl =	snd_pcm_lib_ioctl,
-	.hw_params =	snd_cs4231_playback_hw_params,
-	.hw_free =	snd_cs4231_playback_hw_free,
-	.prepare =	snd_cs4231_playback_prepare,
-	.trigger =	snd_cs4231_trigger,
-	.pointer =	snd_cs4231_playback_pointer,
-};
-
-static struct snd_pcm_ops snd_cs4231_capture_ops = {
-	.open =		snd_cs4231_capture_open,
-	.close =	snd_cs4231_capture_close,
-	.ioctl =	snd_pcm_lib_ioctl,
-	.hw_params =	snd_cs4231_capture_hw_params,
-	.hw_free =	snd_cs4231_capture_hw_free,
-	.prepare =	snd_cs4231_capture_prepare,
-	.trigger =	snd_cs4231_trigger,
-	.pointer =	snd_cs4231_capture_pointer,
-};
-
-int snd_cs4231_pcm(struct snd_cs4231 *chip, int device, struct snd_pcm **rpcm)
-{
-	struct snd_pcm *pcm;
-	int err;
-
-	if ((err = snd_pcm_new(chip->card, "CS4231", device, 1, 1, &pcm)) < 0)
-		return err;
-
-	spin_lock_init(&chip->reg_lock);
-	mutex_init(&chip->mce_mutex);
-	mutex_init(&chip->open_mutex);
-
-	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
-	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
-	
-	/* global setup */
-	pcm->private_data = chip;
-	pcm->info_flags = 0;
-	if (chip->single_dma)
-		pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
-	if (chip->hardware != CS4231_HW_INTERWAVE)
-		pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
-	strcpy(pcm->name, snd_cs4231_chip_id(chip));
-
-	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);
-
-	chip->pcm = pcm;
-	if (rpcm)
-		*rpcm = pcm;
-	return 0;
-}
-
-static void snd_cs4231_timer_free(struct snd_timer *timer)
-{
-	struct snd_cs4231 *chip = timer->private_data;
-	chip->timer = NULL;
-}
-
-int snd_cs4231_timer(struct snd_cs4231 *chip, int device, struct snd_timer **rtimer)
-{
-	struct snd_timer *timer;
-	struct snd_timer_id tid;
-	int err;
-
-	/* Timer initialization */
-	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
-	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
-	tid.card = chip->card->number;
-	tid.device = device;
-	tid.subdevice = 0;
-	if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
-		return err;
-	strcpy(timer->name, snd_cs4231_chip_id(chip));
-	timer->private_data = chip;
-	timer->private_free = snd_cs4231_timer_free;
-	timer->hw = snd_cs4231_timer_table;
-	chip->timer = timer;
-	if (rtimer)
-		*rtimer = timer;
-	return 0;
-}
-	
-/*
- *  MIXER part
- */
-
-static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
-{
-	static char *texts[4] = {
-		"Line", "Aux", "Mic", "Mix"
-	};
-	static char *opl3sa_texts[4] = {
-		"Line", "CD", "Mic", "Mix"
-	};
-	static char *gusmax_texts[4] = {
-		"Line", "Synth", "Mic", "Mix"
-	};
-	char **ptexts = texts;
-	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
-
-	snd_assert(chip->card != NULL, return -EINVAL);
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 2;
-	uinfo->value.enumerated.items = 4;
-	if (uinfo->value.enumerated.item > 3)
-		uinfo->value.enumerated.item = 3;
-	if (!strcmp(chip->card->driver, "GUS MAX"))
-		ptexts = gusmax_texts;
-	switch (chip->hardware) {
-	case CS4231_HW_INTERWAVE: ptexts = gusmax_texts; break;
-	case CS4231_HW_OPL3SA2: ptexts = opl3sa_texts; break;
-	}
-	strcpy(uinfo->value.enumerated.name, ptexts[uinfo->value.enumerated.item]);
-	return 0;
-}
-
-static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
-	unsigned long flags;
-	
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
-	ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	return 0;
-}
-
-static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
-	unsigned long flags;
-	unsigned short left, right;
-	int change;
-	
-	if (ucontrol->value.enumerated.item[0] > 3 ||
-	    ucontrol->value.enumerated.item[1] > 3)
-		return -EINVAL;
-	left = ucontrol->value.enumerated.item[0] << 6;
-	right = ucontrol->value.enumerated.item[1] << 6;
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
-	right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
-	change = left != chip->image[CS4231_LEFT_INPUT] ||
-	         right != chip->image[CS4231_RIGHT_INPUT];
-	snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
-	snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	return change;
-}
-
-int snd_cs4231_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;
-}
-
-int snd_cs4231_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
-	unsigned long flags;
-	int reg = kcontrol->private_value & 0xff;
-	int shift = (kcontrol->private_value >> 8) & 0xff;
-	int mask = (kcontrol->private_value >> 16) & 0xff;
-	int invert = (kcontrol->private_value >> 24) & 0xff;
-	
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	if (invert)
-		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
-	return 0;
-}
-
-int snd_cs4231_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
-	unsigned long flags;
-	int reg = kcontrol->private_value & 0xff;
-	int shift = (kcontrol->private_value >> 8) & 0xff;
-	int mask = (kcontrol->private_value >> 16) & 0xff;
-	int invert = (kcontrol->private_value >> 24) & 0xff;
-	int change;
-	unsigned short val;
-	
-	val = (ucontrol->value.integer.value[0] & mask);
-	if (invert)
-		val = mask - val;
-	val <<= shift;
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	val = (chip->image[reg] & ~(mask << shift)) | val;
-	change = val != chip->image[reg];
-	snd_cs4231_out(chip, reg, val);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	return change;
-}
-
-int snd_cs4231_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;
-}
-
-int snd_cs4231_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
-	unsigned long flags;
-	int left_reg = kcontrol->private_value & 0xff;
-	int right_reg = (kcontrol->private_value >> 8) & 0xff;
-	int shift_left = (kcontrol->private_value >> 16) & 0x07;
-	int shift_right = (kcontrol->private_value >> 19) & 0x07;
-	int mask = (kcontrol->private_value >> 24) & 0xff;
-	int invert = (kcontrol->private_value >> 22) & 1;
-	
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
-	ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	if (invert) {
-		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
-		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
-	}
-	return 0;
-}
-
-int snd_cs4231_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
-	unsigned long flags;
-	int left_reg = kcontrol->private_value & 0xff;
-	int right_reg = (kcontrol->private_value >> 8) & 0xff;
-	int shift_left = (kcontrol->private_value >> 16) & 0x07;
-	int shift_right = (kcontrol->private_value >> 19) & 0x07;
-	int mask = (kcontrol->private_value >> 24) & 0xff;
-	int invert = (kcontrol->private_value >> 22) & 1;
-	int change;
-	unsigned short val1, val2;
-	
-	val1 = ucontrol->value.integer.value[0] & mask;
-	val2 = ucontrol->value.integer.value[1] & mask;
-	if (invert) {
-		val1 = mask - val1;
-		val2 = mask - val2;
-	}
-	val1 <<= shift_left;
-	val2 <<= shift_right;
-	spin_lock_irqsave(&chip->reg_lock, flags);
-	val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
-	val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
-	change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
-	snd_cs4231_out(chip, left_reg, val1);
-	snd_cs4231_out(chip, right_reg, val2);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	return change;
-}
-
-static struct snd_kcontrol_new snd_cs4231_controls[] = {
-CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
-CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
-CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
-CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
-CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
-CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
-CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
-CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
-CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
-CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
-{
-	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-	.name = "Capture Source",
-	.info = snd_cs4231_info_mux,
-	.get = snd_cs4231_get_mux,
-	.put = snd_cs4231_put_mux,
-},
-CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
-CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
-CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1)
-};
-                                        
-static struct snd_kcontrol_new snd_opti93x_controls[] = {
-CS4231_DOUBLE("Master Playback Switch", 0,
-	      OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 7, 7, 1, 1),
-CS4231_DOUBLE("Master Playback Volume", 0,
-	      OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 1, 1, 31, 1),
-CS4231_DOUBLE("PCM Playback Switch", 0,
-	      CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("PCM Playback Volume", 0,
-	      CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 31, 1),
-CS4231_DOUBLE("FM Playback Switch", 0,
-	      CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("FM Playback Volume", 0,
-	      CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 1, 1, 15, 1),
-CS4231_DOUBLE("Line Playback Switch", 0,
-	      CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
-CS4231_DOUBLE("Line Playback Volume", 0,
-	      CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 15, 1),
-CS4231_DOUBLE("Mic Playback Switch", 0,
-	      OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("Mic Playback Volume", 0,
-	      OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 1, 1, 15, 1),
-CS4231_DOUBLE("Mic Boost", 0,
-	      CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
-CS4231_DOUBLE("CD Playback Switch", 0,
-	      CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("CD Playback Volume", 0,
-	      CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 1, 1, 15, 1),
-CS4231_DOUBLE("Aux Playback Switch", 0,
-	      OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 7, 7, 1, 1),
-CS4231_DOUBLE("Aux Playback Volume", 0,
-	      OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 1, 1, 15, 1),
-CS4231_DOUBLE("Capture Volume", 0,
-	      CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
-{
-	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-	.name = "Capture Source",
-	.info = snd_cs4231_info_mux,
-	.get = snd_cs4231_get_mux,
-	.put = snd_cs4231_put_mux,
-}
-};
-
-int snd_cs4231_mixer(struct snd_cs4231 *chip)
-{
-	struct snd_card *card;
-	unsigned int idx;
-	int err;
-
-	snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
-
-	card = chip->card;
-
-	strcpy(card->mixername, chip->pcm->name);
-
-	if (chip->hardware == CS4231_HW_OPTI93X)
-		for (idx = 0; idx < ARRAY_SIZE(snd_opti93x_controls); idx++) {
-			err = snd_ctl_add(card,
-					snd_ctl_new1(&snd_opti93x_controls[idx],
-						     chip));
-			if (err < 0)
-				return err;
-		}
-	else
-		for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
-			err = snd_ctl_add(card,
-					snd_ctl_new1(&snd_cs4231_controls[idx],
-						     chip));
-			if (err < 0)
-				return err;
-		}
-	return 0;
-}
-
-EXPORT_SYMBOL(snd_cs4231_out);
-EXPORT_SYMBOL(snd_cs4231_in);
-EXPORT_SYMBOL(snd_cs4236_ext_out);
-EXPORT_SYMBOL(snd_cs4236_ext_in);
-EXPORT_SYMBOL(snd_cs4231_mce_up);
-EXPORT_SYMBOL(snd_cs4231_mce_down);
-EXPORT_SYMBOL(snd_cs4231_overrange);
-EXPORT_SYMBOL(snd_cs4231_interrupt);
-EXPORT_SYMBOL(snd_cs4231_chip_id);
-EXPORT_SYMBOL(snd_cs4231_create);
-EXPORT_SYMBOL(snd_cs4231_pcm);
-EXPORT_SYMBOL(snd_cs4231_mixer);
-EXPORT_SYMBOL(snd_cs4231_timer);
-EXPORT_SYMBOL(snd_cs4231_info_single);
-EXPORT_SYMBOL(snd_cs4231_get_single);
-EXPORT_SYMBOL(snd_cs4231_put_single);
-EXPORT_SYMBOL(snd_cs4231_info_double);
-EXPORT_SYMBOL(snd_cs4231_get_double);
-EXPORT_SYMBOL(snd_cs4231_put_double);
-
-/*
- *  INIT part
- */
-
-static int __init alsa_cs4231_init(void)
-{
-	return 0;
-}
-
-static void __exit alsa_cs4231_exit(void)
-{
-}
-
-module_init(alsa_cs4231_init)
-module_exit(alsa_cs4231_exit)