Linux-2.6.12-rc2v2.6.12-rc2

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

Let it rip!

1 files changed, 1175 insertions, 0 deletions

diff --git a/sound/isa/sb/sb16_csp.c b/sound/isa/sb/sb16_csp.c
new file mode 100644
index 00000000000..b62920eead3
--- /dev/null
+++ b/sound/isa/sb/sb16_csp.c
@@ -0,0 +1,1175 @@
+/*
+ *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
+ *                        Takashi Iwai <tiwai@suse.de>
+ *
+ *  SB16ASP/AWE32 CSP control
+ *
+ *  CSP microcode loader:
+ *   alsa-tools/sb16_csp/ 
+ *
+ *   This program is free software; you can redistribute it and/or modify 
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/info.h>
+#include <sound/sb16_csp.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
+MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
+MODULE_LICENSE("GPL");
+
+#ifdef SNDRV_LITTLE_ENDIAN
+#define CSP_HDR_VALUE(a,b,c,d)	((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
+#else
+#define CSP_HDR_VALUE(a,b,c,d)	((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
+#endif
+#define LE_SHORT(v)		le16_to_cpu(v)
+#define LE_INT(v)		le32_to_cpu(v)
+
+#define RIFF_HEADER	CSP_HDR_VALUE('R', 'I', 'F', 'F')
+#define CSP__HEADER	CSP_HDR_VALUE('C', 'S', 'P', ' ')
+#define LIST_HEADER	CSP_HDR_VALUE('L', 'I', 'S', 'T')
+#define FUNC_HEADER	CSP_HDR_VALUE('f', 'u', 'n', 'c')
+#define CODE_HEADER	CSP_HDR_VALUE('c', 'o', 'd', 'e')
+#define INIT_HEADER	CSP_HDR_VALUE('i', 'n', 'i', 't')
+#define MAIN_HEADER	CSP_HDR_VALUE('m', 'a', 'i', 'n')
+
+/*
+ * RIFF data format
+ */
+typedef struct riff_header {
+	__u32 name;
+	__u32 len;
+} riff_header_t;
+
+typedef struct desc_header {
+	riff_header_t info;
+	__u16 func_nr;
+	__u16 VOC_type;
+	__u16 flags_play_rec;
+	__u16 flags_16bit_8bit;
+	__u16 flags_stereo_mono;
+	__u16 flags_rates;
+} desc_header_t;
+
+/*
+ * prototypes
+ */
+static void snd_sb_csp_free(snd_hwdep_t *hw);
+static int snd_sb_csp_open(snd_hwdep_t * hw, struct file *file);
+static int snd_sb_csp_ioctl(snd_hwdep_t * hw, struct file *file, unsigned int cmd, unsigned long arg);
+static int snd_sb_csp_release(snd_hwdep_t * hw, struct file *file);
+
+static int csp_detect(sb_t *chip, int *version);
+static int set_codec_parameter(sb_t *chip, unsigned char par, unsigned char val);
+static int set_register(sb_t *chip, unsigned char reg, unsigned char val);
+static int read_register(sb_t *chip, unsigned char reg);
+static int set_mode_register(sb_t *chip, unsigned char mode);
+static int get_version(sb_t *chip);
+
+static int snd_sb_csp_riff_load(snd_sb_csp_t * p, snd_sb_csp_microcode_t __user * code);
+static int snd_sb_csp_unload(snd_sb_csp_t * p);
+static int snd_sb_csp_load_user(snd_sb_csp_t * p, const unsigned char __user *buf, int size, int load_flags);
+static int snd_sb_csp_autoload(snd_sb_csp_t * p, int pcm_sfmt, int play_rec_mode);
+static int snd_sb_csp_check_version(snd_sb_csp_t * p);
+
+static int snd_sb_csp_use(snd_sb_csp_t * p);
+static int snd_sb_csp_unuse(snd_sb_csp_t * p);
+static int snd_sb_csp_start(snd_sb_csp_t * p, int sample_width, int channels);
+static int snd_sb_csp_stop(snd_sb_csp_t * p);
+static int snd_sb_csp_pause(snd_sb_csp_t * p);
+static int snd_sb_csp_restart(snd_sb_csp_t * p);
+
+static int snd_sb_qsound_build(snd_sb_csp_t * p);
+static void snd_sb_qsound_destroy(snd_sb_csp_t * p);
+static int snd_sb_csp_qsound_transfer(snd_sb_csp_t * p);
+
+static int init_proc_entry(snd_sb_csp_t * p, int device);
+static void info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer);
+
+/*
+ * Detect CSP chip and create a new instance
+ */
+int snd_sb_csp_new(sb_t *chip, int device, snd_hwdep_t ** rhwdep)
+{
+	snd_sb_csp_t *p;
+	int version, err;
+	snd_hwdep_t *hw;
+
+	if (rhwdep)
+		*rhwdep = NULL;
+
+	if (csp_detect(chip, &version))
+		return -ENODEV;
+
+	if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
+		return err;
+
+	if ((p = kcalloc(1, sizeof(*p), GFP_KERNEL)) == NULL) {
+		snd_device_free(chip->card, hw);
+		return -ENOMEM;
+	}
+	p->chip = chip;
+	p->version = version;
+
+	/* CSP operators */
+	p->ops.csp_use = snd_sb_csp_use;
+	p->ops.csp_unuse = snd_sb_csp_unuse;
+	p->ops.csp_autoload = snd_sb_csp_autoload;
+	p->ops.csp_start = snd_sb_csp_start;
+	p->ops.csp_stop = snd_sb_csp_stop;
+	p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
+
+	init_MUTEX(&p->access_mutex);
+	sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
+	hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
+	hw->private_data = p;
+	hw->private_free = snd_sb_csp_free;
+
+	/* operators - only write/ioctl */
+	hw->ops.open = snd_sb_csp_open;
+	hw->ops.ioctl = snd_sb_csp_ioctl;
+	hw->ops.release = snd_sb_csp_release;
+
+	/* create a proc entry */
+	init_proc_entry(p, device);
+	if (rhwdep)
+		*rhwdep = hw;
+	return 0;
+}
+
+/*
+ * free_private for hwdep instance
+ */
+static void snd_sb_csp_free(snd_hwdep_t *hwdep)
+{
+	snd_sb_csp_t *p = hwdep->private_data;
+	if (p) {
+		if (p->running & SNDRV_SB_CSP_ST_RUNNING)
+			snd_sb_csp_stop(p);
+		kfree(p);
+	}
+}
+
+/* ------------------------------ */
+
+/*
+ * open the device exclusively
+ */
+static int snd_sb_csp_open(snd_hwdep_t * hw, struct file *file)
+{
+	snd_sb_csp_t *p = hw->private_data;
+	return (snd_sb_csp_use(p));
+}
+
+/*
+ * ioctl for hwdep device:
+ */
+static int snd_sb_csp_ioctl(snd_hwdep_t * hw, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	snd_sb_csp_t *p = hw->private_data;
+	snd_sb_csp_info_t info;
+	snd_sb_csp_start_t start_info;
+	int err;
+
+	snd_assert(p != NULL, return -EINVAL);
+
+	if (snd_sb_csp_check_version(p))
+		return -ENODEV;
+
+	switch (cmd) {
+		/* get information */
+	case SNDRV_SB_CSP_IOCTL_INFO:
+		*info.codec_name = *p->codec_name;
+		info.func_nr = p->func_nr;
+		info.acc_format = p->acc_format;
+		info.acc_channels = p->acc_channels;
+		info.acc_width = p->acc_width;
+		info.acc_rates = p->acc_rates;
+		info.csp_mode = p->mode;
+		info.run_channels = p->run_channels;
+		info.run_width = p->run_width;
+		info.version = p->version;
+		info.state = p->running;
+		if (copy_to_user((void __user *)arg, &info, sizeof(info)))
+			err = -EFAULT;
+		else
+			err = 0;
+		break;
+
+		/* load CSP microcode */
+	case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
+		err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
+		       -EBUSY : snd_sb_csp_riff_load(p, (snd_sb_csp_microcode_t __user *) arg));
+		break;
+	case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
+		err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
+		       -EBUSY : snd_sb_csp_unload(p));
+		break;
+
+		/* change CSP running state */
+	case SNDRV_SB_CSP_IOCTL_START:
+		if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
+			err = -EFAULT;
+		else
+			err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
+		break;
+	case SNDRV_SB_CSP_IOCTL_STOP:
+		err = snd_sb_csp_stop(p);
+		break;
+	case SNDRV_SB_CSP_IOCTL_PAUSE:
+		err = snd_sb_csp_pause(p);
+		break;
+	case SNDRV_SB_CSP_IOCTL_RESTART:
+		err = snd_sb_csp_restart(p);
+		break;
+	default:
+		err = -ENOTTY;
+		break;
+	}
+
+	return err;
+}
+
+/*
+ * close the device
+ */
+static int snd_sb_csp_release(snd_hwdep_t * hw, struct file *file)
+{
+	snd_sb_csp_t *p = hw->private_data;
+	return (snd_sb_csp_unuse(p));
+}
+
+/* ------------------------------ */
+
+/*
+ * acquire device
+ */
+static int snd_sb_csp_use(snd_sb_csp_t * p)
+{
+	down(&p->access_mutex);
+	if (p->used) {
+		up(&p->access_mutex);
+		return -EAGAIN;
+	}
+	p->used++;
+	up(&p->access_mutex);
+
+	return 0;
+
+}
+
+/*
+ * release device
+ */
+static int snd_sb_csp_unuse(snd_sb_csp_t * p)
+{
+	down(&p->access_mutex);
+	p->used--;
+	up(&p->access_mutex);
+
+	return 0;
+}
+
+/*
+ * load microcode via ioctl: 
+ * code is user-space pointer
+ */
+static int snd_sb_csp_riff_load(snd_sb_csp_t * p, snd_sb_csp_microcode_t __user * mcode)
+{
+	snd_sb_csp_mc_header_t info;
+
+	unsigned char __user *data_ptr;
+	unsigned char __user *data_end;
+	unsigned short func_nr = 0;
+
+	riff_header_t file_h, item_h, code_h;
+	__u32 item_type;
+	desc_header_t funcdesc_h;
+
+	unsigned long flags;
+	int err;
+
+	if (copy_from_user(&info, mcode, sizeof(info)))
+		return -EFAULT;
+	data_ptr = mcode->data;
+
+	if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
+		return -EFAULT;
+	if ((file_h.name != RIFF_HEADER) ||
+	    (LE_INT(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
+		snd_printd("%s: Invalid RIFF header\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	data_ptr += sizeof(file_h);
+	data_end = data_ptr + LE_INT(file_h.len);
+
+	if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
+		return -EFAULT;
+	if (item_type != CSP__HEADER) {
+		snd_printd("%s: Invalid RIFF file type\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	data_ptr += sizeof (item_type);
+
+	for (; data_ptr < data_end; data_ptr += LE_INT(item_h.len)) {
+		if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
+			return -EFAULT;
+		data_ptr += sizeof(item_h);
+		if (item_h.name != LIST_HEADER)
+			continue;
+
+		if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
+			 return -EFAULT;
+		switch (item_type) {
+		case FUNC_HEADER:
+			if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
+				return -EFAULT;
+			func_nr = LE_SHORT(funcdesc_h.func_nr);
+			break;
+		case CODE_HEADER:
+			if (func_nr != info.func_req)
+				break;	/* not required function, try next */
+			data_ptr += sizeof(item_type);
+
+			/* destroy QSound mixer element */
+			if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
+				snd_sb_qsound_destroy(p);
+			}
+			/* Clear all flags */
+			p->running = 0;
+			p->mode = 0;
+
+			/* load microcode blocks */
+			for (;;) {
+				if (data_ptr >= data_end)
+					return -EINVAL;
+				if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
+					return -EFAULT;
+
+				/* init microcode blocks */
+				if (code_h.name != INIT_HEADER)
+					break;
+				data_ptr += sizeof(code_h);
+				err = snd_sb_csp_load_user(p, data_ptr, LE_INT(code_h.len),
+						      SNDRV_SB_CSP_LOAD_INITBLOCK);
+				if (err)
+					return err;
+				data_ptr += LE_INT(code_h.len);
+			}
+			/* main microcode block */
+			if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
+				return -EFAULT;
+
+			if (code_h.name != MAIN_HEADER) {
+				snd_printd("%s: Missing 'main' microcode\n", __FUNCTION__);
+				return -EINVAL;
+			}
+			data_ptr += sizeof(code_h);
+			err = snd_sb_csp_load_user(p, data_ptr,
+						   LE_INT(code_h.len), 0);
+			if (err)
+				return err;
+
+			/* fill in codec header */
+			strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
+			p->func_nr = func_nr;
+			p->mode = LE_SHORT(funcdesc_h.flags_play_rec);
+			switch (LE_SHORT(funcdesc_h.VOC_type)) {
+			case 0x0001:	/* QSound decoder */
+				if (LE_SHORT(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
+					if (snd_sb_qsound_build(p) == 0)
+						/* set QSound flag and clear all other mode flags */
+						p->mode = SNDRV_SB_CSP_MODE_QSOUND;
+				}
+				p->acc_format = 0;
+				break;
+			case 0x0006:	/* A Law codec */
+				p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
+				break;
+			case 0x0007:	/* Mu Law codec */
+				p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
+				break;
+			case 0x0011:	/* what Creative thinks is IMA ADPCM codec */
+			case 0x0200:	/* Creative ADPCM codec */
+				p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
+				break;
+			case    201:	/* Text 2 Speech decoder */
+				/* TODO: Text2Speech handling routines */
+				p->acc_format = 0;
+				break;
+			case 0x0202:	/* Fast Speech 8 codec */
+			case 0x0203:	/* Fast Speech 10 codec */
+				p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
+				break;
+			default:	/* other codecs are unsupported */
+				p->acc_format = p->acc_width = p->acc_rates = 0;
+				p->mode = 0;
+				snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
+					   __FUNCTION__,
+					   LE_SHORT(funcdesc_h.VOC_type));
+				return -EINVAL;
+			}
+			p->acc_channels = LE_SHORT(funcdesc_h.flags_stereo_mono);
+			p->acc_width = LE_SHORT(funcdesc_h.flags_16bit_8bit);
+			p->acc_rates = LE_SHORT(funcdesc_h.flags_rates);
+
+			/* Decouple CSP from IRQ and DMAREQ lines */
+			spin_lock_irqsave(&p->chip->reg_lock, flags);
+			set_mode_register(p->chip, 0xfc);
+			set_mode_register(p->chip, 0x00);
+			spin_unlock_irqrestore(&p->chip->reg_lock, flags);
+
+			/* finished loading successfully */
+			p->running = SNDRV_SB_CSP_ST_LOADED;	/* set LOADED flag */
+			return 0;
+		}
+	}
+	snd_printd("%s: Function #%d not found\n", __FUNCTION__, info.func_req);
+	return -EINVAL;
+}
+
+/*
+ * unload CSP microcode
+ */
+static int snd_sb_csp_unload(snd_sb_csp_t * p)
+{
+	if (p->running & SNDRV_SB_CSP_ST_RUNNING)
+		return -EBUSY;
+	if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
+		return -ENXIO;
+
+	/* clear supported formats */
+	p->acc_format = 0;
+	p->acc_channels = p->acc_width = p->acc_rates = 0;
+	/* destroy QSound mixer element */
+	if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
+		snd_sb_qsound_destroy(p);
+	}
+	/* clear all flags */
+	p->running = 0;
+	p->mode = 0;
+	return 0;
+}
+
+/*
+ * send command sequence to DSP
+ */
+static inline int command_seq(sb_t *chip, const unsigned char *seq, int size)
+{
+	int i;
+	for (i = 0; i < size; i++) {
+		if (!snd_sbdsp_command(chip, seq[i]))
+			return -EIO;
+	}
+	return 0;
+}
+
+/*
+ * set CSP codec parameter
+ */
+static int set_codec_parameter(sb_t *chip, unsigned char par, unsigned char val)
+{
+	unsigned char dsp_cmd[3];
+
+	dsp_cmd[0] = 0x05;	/* CSP set codec parameter */
+	dsp_cmd[1] = val;	/* Parameter value */
+	dsp_cmd[2] = par;	/* Parameter */
+	command_seq(chip, dsp_cmd, 3);
+	snd_sbdsp_command(chip, 0x03);	/* DSP read? */
+	if (snd_sbdsp_get_byte(chip) != par)
+		return -EIO;
+	return 0;
+}
+
+/*
+ * set CSP register
+ */
+static int set_register(sb_t *chip, unsigned char reg, unsigned char val)
+{
+	unsigned char dsp_cmd[3];
+
+	dsp_cmd[0] = 0x0e;	/* CSP set register */
+	dsp_cmd[1] = reg;	/* CSP Register */
+	dsp_cmd[2] = val;	/* value */
+	return command_seq(chip, dsp_cmd, 3);
+}
+
+/*
+ * read CSP register
+ * return < 0 -> error
+ */
+static int read_register(sb_t *chip, unsigned char reg)
+{
+	unsigned char dsp_cmd[2];
+
+	dsp_cmd[0] = 0x0f;	/* CSP read register */
+	dsp_cmd[1] = reg;	/* CSP Register */
+	command_seq(chip, dsp_cmd, 2);
+	return snd_sbdsp_get_byte(chip);	/* Read DSP value */
+}
+
+/*
+ * set CSP mode register
+ */
+static int set_mode_register(sb_t *chip, unsigned char mode)
+{
+	unsigned char dsp_cmd[2];
+
+	dsp_cmd[0] = 0x04;	/* CSP set mode register */
+	dsp_cmd[1] = mode;	/* mode */
+	return command_seq(chip, dsp_cmd, 2);
+}
+
+/*
+ * Detect CSP
+ * return 0 if CSP exists.
+ */
+static int csp_detect(sb_t *chip, int *version)
+{
+	unsigned char csp_test1, csp_test2;
+	unsigned long flags;
+	int result = -ENODEV;
+
+	spin_lock_irqsave(&chip->reg_lock, flags);
+
+	set_codec_parameter(chip, 0x00, 0x00);
+	set_mode_register(chip, 0xfc);		/* 0xfc = ?? */
+
+	csp_test1 = read_register(chip, 0x83);
+	set_register(chip, 0x83, ~csp_test1);
+	csp_test2 = read_register(chip, 0x83);
+	if (csp_test2 != (csp_test1 ^ 0xff))
+		goto __fail;
+
+	set_register(chip, 0x83, csp_test1);
+	csp_test2 = read_register(chip, 0x83);
+	if (csp_test2 != csp_test1)
+		goto __fail;
+
+	set_mode_register(chip, 0x00);		/* 0x00 = ? */
+
+	*version = get_version(chip);
+	snd_sbdsp_reset(chip);	/* reset DSP after getversion! */
+	if (*version >= 0x10 && *version <= 0x1f)
+		result = 0;		/* valid version id */
+
+      __fail:
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return result;
+}
+
+/*
+ * get CSP version number
+ */
+static int get_version(sb_t *chip)
+{
+	unsigned char dsp_cmd[2];
+
+	dsp_cmd[0] = 0x08;	/* SB_DSP_!something! */
+	dsp_cmd[1] = 0x03;	/* get chip version id? */
+	command_seq(chip, dsp_cmd, 2);
+
+	return (snd_sbdsp_get_byte(chip));
+}
+
+/*
+ * check if the CSP version is valid
+ */
+static int snd_sb_csp_check_version(snd_sb_csp_t * p)
+{
+	if (p->version < 0x10 || p->version > 0x1f) {
+		snd_printd("%s: Invalid CSP version: 0x%x\n", __FUNCTION__, p->version);
+		return 1;
+	}
+	return 0;
+}
+
+/*
+ * download microcode to CSP (microcode should have one "main" block).
+ */
+static int snd_sb_csp_load(snd_sb_csp_t * p, const unsigned char *buf, int size, int load_flags)
+{
+	int status, i;
+	int err;
+	int result = -EIO;
+	unsigned long flags;
+
+	spin_lock_irqsave(&p->chip->reg_lock, flags);
+	snd_sbdsp_command(p->chip, 0x01);	/* CSP download command */
+	if (snd_sbdsp_get_byte(p->chip)) {
+		snd_printd("%s: Download command failed\n", __FUNCTION__);
+		goto __fail;
+	}
+	/* Send CSP low byte (size - 1) */
+	snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
+	/* Send high byte */
+	snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
+	/* send microcode sequence */
+	/* load from kernel space */
+	while (size--) {
+		if (!snd_sbdsp_command(p->chip, *buf++))
+			goto __fail;
+	}
+	if (snd_sbdsp_get_byte(p->chip))
+		goto __fail;
+
+	if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
+		i = 0;
+		/* some codecs (FastSpeech) take some time to initialize */
+		while (1) {
+			snd_sbdsp_command(p->chip, 0x03);
+			status = snd_sbdsp_get_byte(p->chip);
+			if (status == 0x55 || ++i >= 10)
+				break;
+			udelay (10);
+		}
+		if (status != 0x55) {
+			snd_printd("%s: Microcode initialization failed\n", __FUNCTION__);
+			goto __fail;
+		}
+	} else {
+		/*
+		 * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
+		 * Start CSP chip if no 16bit DMA channel is set - some kind
+		 * of autorun or perhaps a bugfix?
+		 */
+		spin_lock(&p->chip->mixer_lock);
+		status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
+		spin_unlock(&p->chip->mixer_lock);
+		if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
+			err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
+			       set_codec_parameter(p->chip, 0xff, 0x00));
+			snd_sbdsp_reset(p->chip);		/* really! */
+			if (err)
+				goto __fail;
+			set_mode_register(p->chip, 0xc0);	/* c0 = STOP */
+			set_mode_register(p->chip, 0x70);	/* 70 = RUN */
+		}
+	}
+	result = 0;
+
+      __fail:
+	spin_unlock_irqrestore(&p->chip->reg_lock, flags);
+	return result;
+}
+ 
+static int snd_sb_csp_load_user(snd_sb_csp_t * p, const unsigned char __user *buf, int size, int load_flags)
+{
+	int err = -ENOMEM;
+	unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
+	if (kbuf) {
+		if (copy_from_user(kbuf, buf, size))
+			err = -EFAULT;
+		else
+			err = snd_sb_csp_load(p, kbuf, size, load_flags);
+		kfree(kbuf);
+	}
+	return err;
+}
+
+#include "sb16_csp_codecs.h"
+
+/*
+ * autoload hardware codec if necessary
+ * return 0 if CSP is loaded and ready to run (p->running != 0)
+ */
+static int snd_sb_csp_autoload(snd_sb_csp_t * p, int pcm_sfmt, int play_rec_mode)
+{
+	unsigned long flags;
+	int err = 0;
+
+	/* if CSP is running or manually loaded then exit */
+	if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED)) 
+		return -EBUSY;
+
+	/* autoload microcode only if requested hardware codec is not already loaded */
+	if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
+		p->running = SNDRV_SB_CSP_ST_AUTO;
+	} else {
+		switch (pcm_sfmt) {
+		case SNDRV_PCM_FORMAT_MU_LAW:
+			err = snd_sb_csp_load(p, &mulaw_main[0], sizeof(mulaw_main), 0);
+			p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
+			p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
+			break;
+		case SNDRV_PCM_FORMAT_A_LAW:
+			err = snd_sb_csp_load(p, &alaw_main[0], sizeof(alaw_main), 0);
+			p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
+			p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
+			break;
+		case SNDRV_PCM_FORMAT_IMA_ADPCM:
+			err = snd_sb_csp_load(p, &ima_adpcm_init[0], sizeof(ima_adpcm_init),
+					      SNDRV_SB_CSP_LOAD_INITBLOCK);
+			if (err)
+				break;
+			if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
+				err = snd_sb_csp_load(p, &ima_adpcm_playback[0],
+						      sizeof(ima_adpcm_playback), 0);
+				p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
+			} else {
+				err = snd_sb_csp_load(p, &ima_adpcm_capture[0],
+						      sizeof(ima_adpcm_capture), 0);
+				p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
+			}
+			p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
+			break;				  
+		default:
+			/* Decouple CSP from IRQ and DMAREQ lines */
+			if (p->running & SNDRV_SB_CSP_ST_AUTO) {
+				spin_lock_irqsave(&p->chip->reg_lock, flags);
+				set_mode_register(p->chip, 0xfc);
+				set_mode_register(p->chip, 0x00);
+				spin_unlock_irqrestore(&p->chip->reg_lock, flags);
+				p->running = 0;			/* clear autoloaded flag */
+			}
+			return -EINVAL;
+		}
+		if (err) {
+			p->acc_format = 0;
+			p->acc_channels = p->acc_width = p->acc_rates = 0;
+
+			p->running = 0;				/* clear autoloaded flag */
+			p->mode = 0;
+			return (err);
+		} else {
+			p->running = SNDRV_SB_CSP_ST_AUTO;	/* set autoloaded flag */
+			p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;	/* only 16 bit data */
+			p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
+			p->acc_rates = SNDRV_SB_CSP_RATE_ALL;	/* HW codecs accept all rates */
+		}   
+
+	}
+	return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
+}
+
+/*
+ * start CSP
+ */
+static int snd_sb_csp_start(snd_sb_csp_t * p, int sample_width, int channels)
+{
+	unsigned char s_type;	/* sample type */
+	unsigned char mixL, mixR;
+	int result = -EIO;
+	unsigned long flags;
+
+	if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
+		snd_printd("%s: Microcode not loaded\n", __FUNCTION__);
+		return -ENXIO;
+	}
+	if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
+		snd_printd("%s: CSP already running\n", __FUNCTION__);
+		return -EBUSY;
+	}
+	if (!(sample_width & p->acc_width)) {
+		snd_printd("%s: Unsupported PCM sample width\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	if (!(channels & p->acc_channels)) {
+		snd_printd("%s: Invalid number of channels\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	/* Mute PCM volume */
+	spin_lock_irqsave(&p->chip->mixer_lock, flags);
+	mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
+	mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
+
+	spin_lock(&p->chip->reg_lock);
+	set_mode_register(p->chip, 0xc0);	/* c0 = STOP */
+	set_mode_register(p->chip, 0x70);	/* 70 = RUN */
+
+	s_type = 0x00;
+	if (channels == SNDRV_SB_CSP_MONO)
+		s_type = 0x11;	/* 000n 000n    (n = 1 if mono) */
+	if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
+		s_type |= 0x22;	/* 00dX 00dX    (d = 1 if 8 bit samples) */
+
+	if (set_codec_parameter(p->chip, 0x81, s_type)) {
+		snd_printd("%s: Set sample type command failed\n", __FUNCTION__);
+		goto __fail;
+	}
+	if (set_codec_parameter(p->chip, 0x80, 0x00)) {
+		snd_printd("%s: Codec start command failed\n", __FUNCTION__);
+		goto __fail;
+	}
+	p->run_width = sample_width;
+	p->run_channels = channels;
+
+	p->running |= SNDRV_SB_CSP_ST_RUNNING;
+
+	if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
+		set_codec_parameter(p->chip, 0xe0, 0x01);
+		/* enable QSound decoder */
+		set_codec_parameter(p->chip, 0x00, 0xff);
+		set_codec_parameter(p->chip, 0x01, 0xff);
+		p->running |= SNDRV_SB_CSP_ST_QSOUND;
+		/* set QSound startup value */
+		snd_sb_csp_qsound_transfer(p);
+	}
+	result = 0;
+
+      __fail:
+	spin_unlock(&p->chip->reg_lock);
+
+	/* restore PCM volume */
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
+	spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
+
+	return result;
+}
+
+/*
+ * stop CSP
+ */
+static int snd_sb_csp_stop(snd_sb_csp_t * p)
+{
+	int result;
+	unsigned char mixL, mixR;
+	unsigned long flags;
+
+	if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
+		return 0;
+
+	/* Mute PCM volume */
+	spin_lock_irqsave(&p->chip->mixer_lock, flags);
+	mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
+	mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
+
+	spin_lock(&p->chip->reg_lock);
+	if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
+		set_codec_parameter(p->chip, 0xe0, 0x01);
+		/* disable QSound decoder */
+		set_codec_parameter(p->chip, 0x00, 0x00);
+		set_codec_parameter(p->chip, 0x01, 0x00);
+
+		p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
+	}
+	result = set_mode_register(p->chip, 0xc0);	/* c0 = STOP */
+	spin_unlock(&p->chip->reg_lock);
+
+	/* restore PCM volume */
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
+	snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
+	spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
+
+	if (!(result))
+		p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
+	return result;
+}
+
+/*
+ * pause CSP codec and hold DMA transfer
+ */
+static int snd_sb_csp_pause(snd_sb_csp_t * p)
+{
+	int result;
+	unsigned long flags;
+
+	if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
+		return -EBUSY;
+
+	spin_lock_irqsave(&p->chip->reg_lock, flags);
+	result = set_codec_parameter(p->chip, 0x80, 0xff);
+	spin_unlock_irqrestore(&p->chip->reg_lock, flags);
+	if (!(result))
+		p->running |= SNDRV_SB_CSP_ST_PAUSED;
+
+	return result;
+}
+
+/*
+ * restart CSP codec and resume DMA transfer
+ */
+static int snd_sb_csp_restart(snd_sb_csp_t * p)
+{
+	int result;
+	unsigned long flags;
+
+	if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
+		return -EBUSY;
+
+	spin_lock_irqsave(&p->chip->reg_lock, flags);
+	result = set_codec_parameter(p->chip, 0x80, 0x00);
+	spin_unlock_irqrestore(&p->chip->reg_lock, flags);
+	if (!(result))
+		p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
+
+	return result;
+}
+
+/* ------------------------------ */
+
+/*
+ * QSound mixer control for PCM
+ */
+
+static int snd_sb_qsound_switch_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int snd_sb_qsound_switch_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
+	
+	ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
+	return 0;
+}
+
+static int snd_sb_qsound_switch_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int change;
+	unsigned char nval;
+	
+	nval = ucontrol->value.integer.value[0] & 0x01;
+	spin_lock_irqsave(&p->q_lock, flags);
+	change = p->q_enabled != nval;
+	p->q_enabled = nval;
+	spin_unlock_irqrestore(&p->q_lock, flags);
+	return change;
+}
+
+static int snd_sb_qsound_space_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
+	return 0;
+}
+
+static int snd_sb_qsound_space_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	
+	spin_lock_irqsave(&p->q_lock, flags);
+	ucontrol->value.integer.value[0] = p->qpos_left;
+	ucontrol->value.integer.value[1] = p->qpos_right;
+	spin_unlock_irqrestore(&p->q_lock, flags);
+	return 0;
+}
+
+static int snd_sb_qsound_space_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+	snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
+	unsigned long flags;
+	int change;
+	unsigned char nval1, nval2;
+	
+	nval1 = ucontrol->value.integer.value[0];
+	if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
+		nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
+	nval2 = ucontrol->value.integer.value[1];
+	if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
+		nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
+	spin_lock_irqsave(&p->q_lock, flags);
+	change = p->qpos_left != nval1 || p->qpos_right != nval2;
+	p->qpos_left = nval1;
+	p->qpos_right = nval2;
+	p->qpos_changed = change;
+	spin_unlock_irqrestore(&p->q_lock, flags);
+	return change;
+}
+
+static snd_kcontrol_new_t snd_sb_qsound_switch = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "3D Control - Switch",
+	.info = snd_sb_qsound_switch_info,
+	.get = snd_sb_qsound_switch_get,
+	.put = snd_sb_qsound_switch_put
+};
+
+static snd_kcontrol_new_t snd_sb_qsound_space = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "3D Control - Space",
+	.info = snd_sb_qsound_space_info,
+	.get = snd_sb_qsound_space_get,
+	.put = snd_sb_qsound_space_put
+};
+
+static int snd_sb_qsound_build(snd_sb_csp_t * p)
+{
+	snd_card_t * card;
+	int err;
+
+	snd_assert(p != NULL, return -EINVAL);
+
+	card = p->chip->card;
+	p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
+	p->qpos_changed = 0;
+
+	spin_lock_init(&p->q_lock);
+
+	if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
+		goto __error;
+	if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
+		goto __error;
+
+	return 0;
+
+     __error:
+	snd_sb_qsound_destroy(p);
+	return err;
+}
+
+static void snd_sb_qsound_destroy(snd_sb_csp_t * p)
+{
+	snd_card_t * card;
+	unsigned long flags;
+
+	snd_assert(p != NULL, return);
+
+	card = p->chip->card;	
+	
+	down_write(&card->controls_rwsem);
+	if (p->qsound_switch)
+		snd_ctl_remove(card, p->qsound_switch);
+	if (p->qsound_space)
+		snd_ctl_remove(card, p->qsound_space);
+	up_write(&card->controls_rwsem);
+
+	/* cancel pending transfer of QSound parameters */
+	spin_lock_irqsave (&p->q_lock, flags);
+	p->qpos_changed = 0;
+	spin_unlock_irqrestore (&p->q_lock, flags);
+}
+
+/*
+ * Transfer qsound parameters to CSP,
+ * function should be called from interrupt routine
+ */
+static int snd_sb_csp_qsound_transfer(snd_sb_csp_t * p)
+{
+	int err = -ENXIO;
+
+	spin_lock(&p->q_lock);
+	if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
+		set_codec_parameter(p->chip, 0xe0, 0x01);
+		/* left channel */
+		set_codec_parameter(p->chip, 0x00, p->qpos_left);
+		set_codec_parameter(p->chip, 0x02, 0x00);
+		/* right channel */
+		set_codec_parameter(p->chip, 0x00, p->qpos_right);
+		set_codec_parameter(p->chip, 0x03, 0x00);
+		err = 0;
+	}
+	p->qpos_changed = 0;
+	spin_unlock(&p->q_lock);
+	return err;
+}
+
+/* ------------------------------ */
+
+/*
+ * proc interface
+ */
+static int init_proc_entry(snd_sb_csp_t * p, int device)
+{
+	char name[16];
+	snd_info_entry_t *entry;
+	sprintf(name, "cspD%d", device);
+	if (! snd_card_proc_new(p->chip->card, name, &entry))
+		snd_info_set_text_ops(entry, p, 1024, info_read);
+	return 0;
+}
+
+static void info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+{
+	snd_sb_csp_t *p = entry->private_data;
+
+	snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
+	snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
+		    ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
+		    ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
+		    ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
+	if (p->running & SNDRV_SB_CSP_ST_LOADED) {
+		snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
+		snd_iprintf(buffer, "Sample rates: ");
+		if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
+			snd_iprintf(buffer, "All\n");
+		} else {
+			snd_iprintf(buffer, "%s%s%s%s\n",
+				    ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
+				    ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
+				    ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
+				    ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
+		}
+		if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
+			snd_iprintf(buffer, "QSound decoder %sabled\n",
+				    p->q_enabled ? "en" : "dis");
+		} else {
+			snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
+				    p->acc_format,
+				    ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
+				    ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
+				    ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
+				    ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
+				    ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
+				    ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
+		}
+	}
+	if (p->running & SNDRV_SB_CSP_ST_AUTO) {
+		snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
+	}
+	if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
+		snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
+			    ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
+			    ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
+	}
+	if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
+		snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
+			    p->qpos_left, p->qpos_right);
+	}
+}
+
+/* */
+
+EXPORT_SYMBOL(snd_sb_csp_new);
+
+/*
+ * INIT part
+ */
+
+static int __init alsa_sb_csp_init(void)
+{
+	return 0;
+}
+
+static void __exit alsa_sb_csp_exit(void)
+{
+}
+
+module_init(alsa_sb_csp_init)
+module_exit(alsa_sb_csp_exit)