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linux-pinenote/sound/isa/sb/sb16_csp.c
Li Zefan 68425adcc4 ALSA: sound/isa: use memdup_user() 
Remove open-coded memdup_user().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-04-14 12:39:23 +02:00

1201 lines
33 KiB
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/*
* 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 <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");
MODULE_FIRMWARE("sb16/mulaw_main.csp");
MODULE_FIRMWARE("sb16/alaw_main.csp");
MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
#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 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
*/
struct riff_header {
__u32 name;
__u32 len;
};
struct desc_header {
struct riff_header info;
__u16 func_nr;
__u16 VOC_type;
__u16 flags_play_rec;
__u16 flags_16bit_8bit;
__u16 flags_stereo_mono;
__u16 flags_rates;
};
/*
* prototypes
*/
static void snd_sb_csp_free(struct snd_hwdep *hw);
static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
static int csp_detect(struct snd_sb *chip, int *version);
static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
static int read_register(struct snd_sb *chip, unsigned char reg);
static int set_mode_register(struct snd_sb *chip, unsigned char mode);
static int get_version(struct snd_sb *chip);
static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
struct snd_sb_csp_microcode __user * code);
static int snd_sb_csp_unload(struct snd_sb_csp * p);
static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
static int snd_sb_csp_check_version(struct snd_sb_csp * p);
static int snd_sb_csp_use(struct snd_sb_csp * p);
static int snd_sb_csp_unuse(struct snd_sb_csp * p);
static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
static int snd_sb_csp_stop(struct snd_sb_csp * p);
static int snd_sb_csp_pause(struct snd_sb_csp * p);
static int snd_sb_csp_restart(struct snd_sb_csp * p);
static int snd_sb_qsound_build(struct snd_sb_csp * p);
static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
static int init_proc_entry(struct snd_sb_csp * p, int device);
static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
/*
* Detect CSP chip and create a new instance
*/
int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
{
struct snd_sb_csp *p;
int uninitialized_var(version);
int err;
struct snd_hwdep *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 = kzalloc(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;
mutex_init(&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(struct snd_hwdep *hwdep)
{
int i;
struct snd_sb_csp *p = hwdep->private_data;
if (p) {
if (p->running & SNDRV_SB_CSP_ST_RUNNING)
snd_sb_csp_stop(p);
for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
release_firmware(p->csp_programs[i]);
kfree(p);
}
}
/* ------------------------------ */
/*
* open the device exclusively
*/
static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
{
struct snd_sb_csp *p = hw->private_data;
return (snd_sb_csp_use(p));
}
/*
* ioctl for hwdep device:
*/
static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
{
struct snd_sb_csp *p = hw->private_data;
struct snd_sb_csp_info info;
struct snd_sb_csp_start start_info;
int err;
if (snd_BUG_ON(!p))
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, (struct snd_sb_csp_microcode __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(struct snd_hwdep * hw, struct file *file)
{
struct snd_sb_csp *p = hw->private_data;
return (snd_sb_csp_unuse(p));
}
/* ------------------------------ */
/*
* acquire device
*/
static int snd_sb_csp_use(struct snd_sb_csp * p)
{
mutex_lock(&p->access_mutex);
if (p->used) {
mutex_unlock(&p->access_mutex);
return -EAGAIN;
}
p->used++;
mutex_unlock(&p->access_mutex);
return 0;
}
/*
* release device
*/
static int snd_sb_csp_unuse(struct snd_sb_csp * p)
{
mutex_lock(&p->access_mutex);
p->used--;
mutex_unlock(&p->access_mutex);
return 0;
}
/*
* load microcode via ioctl:
* code is user-space pointer
*/
static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
struct snd_sb_csp_microcode __user * mcode)
{
struct snd_sb_csp_mc_header info;
unsigned char __user *data_ptr;
unsigned char __user *data_end;
unsigned short func_nr = 0;
struct riff_header file_h, item_h, code_h;
__u32 item_type;
struct desc_header 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) ||
(le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
snd_printd("%s: Invalid RIFF header\n", __func__);
return -EINVAL;
}
data_ptr += sizeof(file_h);
data_end = data_ptr + le32_to_cpu(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", __func__);
return -EINVAL;
}
data_ptr += sizeof (item_type);
for (; data_ptr < data_end; data_ptr += le32_to_cpu(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 = le16_to_cpu(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, le32_to_cpu(code_h.len),
SNDRV_SB_CSP_LOAD_INITBLOCK);
if (err)
return err;
data_ptr += le32_to_cpu(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", __func__);
return -EINVAL;
}
data_ptr += sizeof(code_h);
err = snd_sb_csp_load_user(p, data_ptr,
le32_to_cpu(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 = le16_to_cpu(funcdesc_h.flags_play_rec);
switch (le16_to_cpu(funcdesc_h.VOC_type)) {
case 0x0001: /* QSound decoder */
if (le16_to_cpu(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",
__func__,
le16_to_cpu(funcdesc_h.VOC_type));
return -EINVAL;
}
p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
p->acc_rates = le16_to_cpu(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", __func__, info.func_req);
return -EINVAL;
}
/*
* unload CSP microcode
*/
static int snd_sb_csp_unload(struct snd_sb_csp * 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(struct snd_sb *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(struct snd_sb *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(struct snd_sb *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(struct snd_sb *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(struct snd_sb *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(struct snd_sb *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(struct snd_sb *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(struct snd_sb_csp * p)
{
if (p->version < 0x10 || p->version > 0x1f) {
snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
return 1;
}
return 0;
}
/*
* download microcode to CSP (microcode should have one "main" block).
*/
static int snd_sb_csp_load(struct snd_sb_csp * 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", __func__);
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", __func__);
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(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
{
int err;
unsigned char *kbuf;
kbuf = memdup_user(buf, size);
if (IS_ERR(kbuf))
return PTR_ERR(kbuf);
err = snd_sb_csp_load(p, kbuf, size, load_flags);
kfree(kbuf);
return err;
}
static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
{
static const char *const names[] = {
"sb16/mulaw_main.csp",
"sb16/alaw_main.csp",
"sb16/ima_adpcm_init.csp",
"sb16/ima_adpcm_playback.csp",
"sb16/ima_adpcm_capture.csp",
};
const struct firmware *program;
BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
program = p->csp_programs[index];
if (!program) {
int err = request_firmware(&program, names[index],
p->chip->card->dev);
if (err < 0)
return err;
p->csp_programs[index] = program;
}
return snd_sb_csp_load(p, program->data, program->size, flags);
}
/*
* autoload hardware codec if necessary
* return 0 if CSP is loaded and ready to run (p->running != 0)
*/
static int snd_sb_csp_autoload(struct snd_sb_csp * 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_firmware_load(p, CSP_PROGRAM_MULAW, 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_firmware_load(p, CSP_PROGRAM_ALAW, 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_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
SNDRV_SB_CSP_LOAD_INITBLOCK);
if (err)
break;
if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
err = snd_sb_csp_firmware_load
(p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
} else {
err = snd_sb_csp_firmware_load
(p, CSP_PROGRAM_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(struct snd_sb_csp * 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", __func__);
return -ENXIO;
}
if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
snd_printd("%s: CSP already running\n", __func__);
return -EBUSY;
}
if (!(sample_width & p->acc_width)) {
snd_printd("%s: Unsupported PCM sample width\n", __func__);
return -EINVAL;
}
if (!(channels & p->acc_channels)) {
snd_printd("%s: Invalid number of channels\n", __func__);
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", __func__);
goto __fail;
}
if (set_codec_parameter(p->chip, 0x80, 0x00)) {
snd_printd("%s: Codec start command failed\n", __func__);
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(struct snd_sb_csp * 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(struct snd_sb_csp * 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(struct snd_sb_csp * 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
*/
#define snd_sb_qsound_switch_info snd_ctl_boolean_mono_info
static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
return 0;
}
static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_sb_csp *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
return 0;
}
static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_sb_csp *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_sb_csp *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 struct snd_kcontrol_new 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 struct snd_kcontrol_new 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(struct snd_sb_csp * p)
{
struct snd_card *card;
int err;
if (snd_BUG_ON(!p))
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(struct snd_sb_csp * p)
{
struct snd_card *card;
unsigned long flags;
if (snd_BUG_ON(!p))
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(struct snd_sb_csp * 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(struct snd_sb_csp * p, int device)
{
char name[16];
struct snd_info_entry *entry;
sprintf(name, "cspD%d", device);
if (! snd_card_proc_new(p->chip->card, name, &entry))
snd_info_set_text_ops(entry, p, info_read);
return 0;
}
static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
struct snd_sb_csp *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)
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