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linux-sg2042/sound/isa/cs423x/cs4236_lib.c

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/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Routines for control of CS4235/4236B/4237B/4238B/4239 chips
*
* Note:
* -----
*
* Bugs:
* -----
*
* 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
*
*/
/*
* Indirect control registers (CS4236B+)
*
* C0
* D8: WSS reset (all chips)
*
* C1 (all chips except CS4236)
* D7-D5: version
* D4-D0: chip id
* 11101 - CS4235
* 01011 - CS4236B
* 01000 - CS4237B
* 01001 - CS4238B
* 11110 - CS4239
*
* C2
* D7-D4: 3D Space (CS4235,CS4237B,CS4238B,CS4239)
* D3-D0: 3D Center (CS4237B); 3D Volume (CS4238B)
*
* C3
* D7: 3D Enable (CS4237B)
* D6: 3D Mono Enable (CS4237B)
* D5: 3D Serial Output (CS4237B,CS4238B)
* D4: 3D Enable (CS4235,CS4238B,CS4239)
*
* C4
* D7: consumer serial port enable (CS4237B,CS4238B)
* D6: channels status block reset (CS4237B,CS4238B)
* D5: user bit in sub-frame of digital audio data (CS4237B,CS4238B)
* D4: validity bit bit in sub-frame of digital audio data (CS4237B,CS4238B)
*
* C5 lower channel status (digital serial data description) (CS4237B,CS4238B)
* D7-D6: first two bits of category code
* D5: lock
* D4-D3: pre-emphasis (0 = none, 1 = 50/15us)
* D2: copy/copyright (0 = copy inhibited)
* D1: 0 = digital audio / 1 = non-digital audio
*
* C6 upper channel status (digital serial data description) (CS4237B,CS4238B)
* D7-D6: sample frequency (0 = 44.1kHz)
* D5: generation status (0 = no indication, 1 = original/commercially precaptureed data)
* D4-D0: category code (upper bits)
*
* C7 reserved (must write 0)
*
* C8 wavetable control
* D7: volume control interrupt enable (CS4235,CS4239)
* D6: hardware volume control format (CS4235,CS4239)
* D3: wavetable serial port enable (all chips)
* D2: DSP serial port switch (all chips)
* D1: disable MCLK (all chips)
* D0: force BRESET low (all chips)
*
*/
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <sound/core.h>
#include <sound/wss.h>
#include <sound/asoundef.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Routines for control of CS4235/4236B/4237B/4238B/4239 chips");
MODULE_LICENSE("GPL");
/*
*
*/
static unsigned char snd_cs4236_ext_map[18] = {
/* CS4236_LEFT_LINE */ 0xff,
/* CS4236_RIGHT_LINE */ 0xff,
/* CS4236_LEFT_MIC */ 0xdf,
/* CS4236_RIGHT_MIC */ 0xdf,
/* CS4236_LEFT_MIX_CTRL */ 0xe0 | 0x18,
/* CS4236_RIGHT_MIX_CTRL */ 0xe0,
/* CS4236_LEFT_FM */ 0xbf,
/* CS4236_RIGHT_FM */ 0xbf,
/* CS4236_LEFT_DSP */ 0xbf,
/* CS4236_RIGHT_DSP */ 0xbf,
/* CS4236_RIGHT_LOOPBACK */ 0xbf,
/* CS4236_DAC_MUTE */ 0xe0,
/* CS4236_ADC_RATE */ 0x01, /* 48kHz */
/* CS4236_DAC_RATE */ 0x01, /* 48kHz */
/* CS4236_LEFT_MASTER */ 0xbf,
/* CS4236_RIGHT_MASTER */ 0xbf,
/* CS4236_LEFT_WAVE */ 0xbf,
/* CS4236_RIGHT_WAVE */ 0xbf
};
/*
*
*/
static void snd_cs4236_ctrl_out(struct snd_wss *chip,
unsigned char reg, unsigned char val)
{
outb(reg, chip->cport + 3);
outb(chip->cimage[reg] = val, chip->cport + 4);
}
static unsigned char snd_cs4236_ctrl_in(struct snd_wss *chip, unsigned char reg)
{
outb(reg, chip->cport + 3);
return inb(chip->cport + 4);
}
/*
* PCM
*/
#define CLOCKS 8
static struct snd_ratnum clocks[CLOCKS] = {
{ .num = 16934400, .den_min = 353, .den_max = 353, .den_step = 1 },
{ .num = 16934400, .den_min = 529, .den_max = 529, .den_step = 1 },
{ .num = 16934400, .den_min = 617, .den_max = 617, .den_step = 1 },
{ .num = 16934400, .den_min = 1058, .den_max = 1058, .den_step = 1 },
{ .num = 16934400, .den_min = 1764, .den_max = 1764, .den_step = 1 },
{ .num = 16934400, .den_min = 2117, .den_max = 2117, .den_step = 1 },
{ .num = 16934400, .den_min = 2558, .den_max = 2558, .den_step = 1 },
{ .num = 16934400/16, .den_min = 21, .den_max = 192, .den_step = 1 }
};
static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
.nrats = CLOCKS,
.rats = clocks,
};
static int snd_cs4236_xrate(struct snd_pcm_runtime *runtime)
{
return snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_clocks);
}
static unsigned char divisor_to_rate_register(unsigned int divisor)
{
switch (divisor) {
case 353: return 1;
case 529: return 2;
case 617: return 3;
case 1058: return 4;
case 1764: return 5;
case 2117: return 6;
case 2558: return 7;
default:
if (divisor < 21 || divisor > 192) {
snd_BUG();
return 192;
}
return divisor;
}
}
static void snd_cs4236_playback_format(struct snd_wss *chip,
struct snd_pcm_hw_params *params,
unsigned char pdfr)
{
unsigned long flags;
unsigned char rate = divisor_to_rate_register(params->rate_den);
spin_lock_irqsave(&chip->reg_lock, flags);
/* set fast playback format change and clean playback FIFO */
snd_wss_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1] | 0x10);
snd_wss_out(chip, CS4231_PLAYBK_FORMAT, pdfr & 0xf0);
snd_wss_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1] & ~0x10);
snd_cs4236_ext_out(chip, CS4236_DAC_RATE, rate);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static void snd_cs4236_capture_format(struct snd_wss *chip,
struct snd_pcm_hw_params *params,
unsigned char cdfr)
{
unsigned long flags;
unsigned char rate = divisor_to_rate_register(params->rate_den);
spin_lock_irqsave(&chip->reg_lock, flags);
/* set fast capture format change and clean capture FIFO */
snd_wss_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1] | 0x20);
snd_wss_out(chip, CS4231_REC_FORMAT, cdfr & 0xf0);
snd_wss_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1] & ~0x20);
snd_cs4236_ext_out(chip, CS4236_ADC_RATE, rate);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
#ifdef CONFIG_PM
static void snd_cs4236_suspend(struct snd_wss *chip)
{
int reg;
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
for (reg = 0; reg < 32; reg++)
chip->image[reg] = snd_wss_in(chip, reg);
for (reg = 0; reg < 18; reg++)
chip->eimage[reg] = snd_cs4236_ext_in(chip, CS4236_I23VAL(reg));
for (reg = 2; reg < 9; reg++)
chip->cimage[reg] = snd_cs4236_ctrl_in(chip, reg);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static void snd_cs4236_resume(struct snd_wss *chip)
{
int reg;
unsigned long flags;
snd_wss_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
for (reg = 0; reg < 32; reg++) {
switch (reg) {
case CS4236_EXT_REG:
case CS4231_VERSION:
case 27: /* why? CS4235 - master left */
case 29: /* why? CS4235 - master right */
break;
default:
snd_wss_out(chip, reg, chip->image[reg]);
break;
}
}
for (reg = 0; reg < 18; reg++)
snd_cs4236_ext_out(chip, CS4236_I23VAL(reg), chip->eimage[reg]);
for (reg = 2; reg < 9; reg++) {
switch (reg) {
case 7:
break;
default:
snd_cs4236_ctrl_out(chip, reg, chip->cimage[reg]);
}
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_wss_mce_down(chip);
}
#endif /* CONFIG_PM */
int snd_cs4236_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_wss **rchip)
{
struct snd_wss *chip;
unsigned char ver1, ver2;
unsigned int reg;
int err;
*rchip = NULL;
if (hardware == WSS_HW_DETECT)
hardware = WSS_HW_DETECT3;
if (cport < 0x100) {
snd_printk("please, specify control port for CS4236+ chips\n");
return -ENODEV;
}
err = snd_wss_create(card, port, cport,
irq, dma1, dma2, hardware, hwshare, &chip);
if (err < 0)
return err;
if (!(chip->hardware & WSS_HW_CS4236B_MASK)) {
snd_printk("CS4236+: MODE3 and extended registers not available, hardware=0x%x\n",chip->hardware);
snd_device_free(card, chip);
return -ENODEV;
}
#if 0
{
int idx;
for (idx = 0; idx < 8; idx++)
snd_printk("CD%i = 0x%x\n", idx, inb(chip->cport + idx));
for (idx = 0; idx < 9; idx++)
snd_printk("C%i = 0x%x\n", idx, snd_cs4236_ctrl_in(chip, idx));
}
#endif
ver1 = snd_cs4236_ctrl_in(chip, 1);
ver2 = snd_cs4236_ext_in(chip, CS4236_VERSION);
snd_printdd("CS4236: [0x%lx] C1 (version) = 0x%x, ext = 0x%x\n", cport, ver1, ver2);
if (ver1 != ver2) {
snd_printk("CS4236+ chip detected, but control port 0x%lx is not valid\n", cport);
snd_device_free(card, chip);
return -ENODEV;
}
snd_cs4236_ctrl_out(chip, 0, 0x00);
snd_cs4236_ctrl_out(chip, 2, 0xff);
snd_cs4236_ctrl_out(chip, 3, 0x00);
snd_cs4236_ctrl_out(chip, 4, 0x80);
snd_cs4236_ctrl_out(chip, 5, ((IEC958_AES1_CON_PCM_CODER & 3) << 6) | IEC958_AES0_CON_EMPHASIS_NONE);
snd_cs4236_ctrl_out(chip, 6, IEC958_AES1_CON_PCM_CODER >> 2);
snd_cs4236_ctrl_out(chip, 7, 0x00);
/* 0x8c for C8 is valid for Turtle Beach Malibu - the IEC-958 output */
/* is working with this setup, other hardware should have */
/* different signal paths and this value should be selectable */
/* in the future */
snd_cs4236_ctrl_out(chip, 8, 0x8c);
chip->rate_constraint = snd_cs4236_xrate;
chip->set_playback_format = snd_cs4236_playback_format;
chip->set_capture_format = snd_cs4236_capture_format;
#ifdef CONFIG_PM
chip->suspend = snd_cs4236_suspend;
chip->resume = snd_cs4236_resume;
#endif
/* initialize extended registers */
for (reg = 0; reg < sizeof(snd_cs4236_ext_map); reg++)
snd_cs4236_ext_out(chip, CS4236_I23VAL(reg), snd_cs4236_ext_map[reg]);
/* initialize compatible but more featured registers */
snd_wss_out(chip, CS4231_LEFT_INPUT, 0x40);
snd_wss_out(chip, CS4231_RIGHT_INPUT, 0x40);
snd_wss_out(chip, CS4231_AUX1_LEFT_INPUT, 0xff);
snd_wss_out(chip, CS4231_AUX1_RIGHT_INPUT, 0xff);
snd_wss_out(chip, CS4231_AUX2_LEFT_INPUT, 0xdf);
snd_wss_out(chip, CS4231_AUX2_RIGHT_INPUT, 0xdf);
snd_wss_out(chip, CS4231_RIGHT_LINE_IN, 0xff);
snd_wss_out(chip, CS4231_LEFT_LINE_IN, 0xff);
snd_wss_out(chip, CS4231_RIGHT_LINE_IN, 0xff);
switch (chip->hardware) {
case WSS_HW_CS4235:
case WSS_HW_CS4239:
snd_wss_out(chip, CS4235_LEFT_MASTER, 0xff);
snd_wss_out(chip, CS4235_RIGHT_MASTER, 0xff);
break;
}
*rchip = chip;
return 0;
}
int snd_cs4236_pcm(struct snd_wss *chip, int device, struct snd_pcm **rpcm)
{
struct snd_pcm *pcm;
int err;
err = snd_wss_pcm(chip, device, &pcm);
if (err < 0)
return err;
pcm->info_flags &= ~SNDRV_PCM_INFO_JOINT_DUPLEX;
if (rpcm)
*rpcm = pcm;
return 0;
}
/*
* MIXER
*/
#define CS4236_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4236_info_single, \
.get = snd_cs4236_get_single, .put = snd_cs4236_put_single, \
.private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
static int snd_cs4236_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 16) & 0xff;
uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_cs4236_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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->eimage[CS4236_REG(reg)] >> shift) & mask;
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (invert)
ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
return 0;
}
static int snd_cs4236_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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->eimage[CS4236_REG(reg)] & ~(mask << shift)) | val;
change = val != chip->eimage[CS4236_REG(reg)];
snd_cs4236_ext_out(chip, reg, val);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
#define CS4236_SINGLEC(xname, xindex, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4236_info_single, \
.get = snd_cs4236_get_singlec, .put = snd_cs4236_put_singlec, \
.private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
static int snd_cs4236_get_singlec(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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->cimage[reg] >> shift) & mask;
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (invert)
ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
return 0;
}
static int snd_cs4236_put_singlec(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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->cimage[reg] & ~(mask << shift)) | val;
change = val != chip->cimage[reg];
snd_cs4236_ctrl_out(chip, reg, val);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
#define CS4236_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4236_info_double, \
.get = snd_cs4236_get_double, .put = snd_cs4236_put_double, \
.private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
static int snd_cs4236_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 24) & 0xff;
uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_cs4236_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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->eimage[CS4236_REG(left_reg)] >> shift_left) & mask;
ucontrol->value.integer.value[1] = (chip->eimage[CS4236_REG(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;
}
static int snd_cs4236_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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);
if (left_reg != right_reg) {
val1 = (chip->eimage[CS4236_REG(left_reg)] & ~(mask << shift_left)) | val1;
val2 = (chip->eimage[CS4236_REG(right_reg)] & ~(mask << shift_right)) | val2;
change = val1 != chip->eimage[CS4236_REG(left_reg)] || val2 != chip->eimage[CS4236_REG(right_reg)];
snd_cs4236_ext_out(chip, left_reg, val1);
snd_cs4236_ext_out(chip, right_reg, val2);
} else {
val1 = (chip->eimage[CS4236_REG(left_reg)] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
change = val1 != chip->eimage[CS4236_REG(left_reg)];
snd_cs4236_ext_out(chip, left_reg, val1);
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
#define CS4236_DOUBLE1(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4236_info_double, \
.get = snd_cs4236_get_double1, .put = snd_cs4236_put_double1, \
.private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
static int snd_cs4236_get_double1(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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->eimage[CS4236_REG(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;
}
static int snd_cs4236_put_double1(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *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->eimage[CS4236_REG(right_reg)] & ~(mask << shift_right)) | val2;
change = val1 != chip->image[left_reg] || val2 != chip->eimage[CS4236_REG(right_reg)];
snd_wss_out(chip, left_reg, val1);
snd_cs4236_ext_out(chip, right_reg, val2);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
#define CS4236_MASTER_DIGITAL(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4236_info_double, \
.get = snd_cs4236_get_master_digital, .put = snd_cs4236_put_master_digital, \
.private_value = 71 << 24 }
static inline int snd_cs4236_mixer_master_digital_invert_volume(int vol)
{
return (vol < 64) ? 63 - vol : 64 + (71 - vol);
}
static int snd_cs4236_get_master_digital(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.integer.value[0] = snd_cs4236_mixer_master_digital_invert_volume(chip->eimage[CS4236_REG(CS4236_LEFT_MASTER)] & 0x7f);
ucontrol->value.integer.value[1] = snd_cs4236_mixer_master_digital_invert_volume(chip->eimage[CS4236_REG(CS4236_RIGHT_MASTER)] & 0x7f);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_cs4236_put_master_digital(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int change;
unsigned short val1, val2;
val1 = snd_cs4236_mixer_master_digital_invert_volume(ucontrol->value.integer.value[0] & 0x7f);
val2 = snd_cs4236_mixer_master_digital_invert_volume(ucontrol->value.integer.value[1] & 0x7f);
spin_lock_irqsave(&chip->reg_lock, flags);
val1 = (chip->eimage[CS4236_REG(CS4236_LEFT_MASTER)] & ~0x7f) | val1;
val2 = (chip->eimage[CS4236_REG(CS4236_RIGHT_MASTER)] & ~0x7f) | val2;
change = val1 != chip->eimage[CS4236_REG(CS4236_LEFT_MASTER)] || val2 != chip->eimage[CS4236_REG(CS4236_RIGHT_MASTER)];
snd_cs4236_ext_out(chip, CS4236_LEFT_MASTER, val1);
snd_cs4236_ext_out(chip, CS4236_RIGHT_MASTER, val2);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
#define CS4235_OUTPUT_ACCU(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4236_info_double, \
.get = snd_cs4235_get_output_accu, .put = snd_cs4235_put_output_accu, \
.private_value = 3 << 24 }
static inline int snd_cs4235_mixer_output_accu_get_volume(int vol)
{
switch ((vol >> 5) & 3) {
case 0: return 1;
case 1: return 3;
case 2: return 2;
case 3: return 0;
}
return 3;
}
static inline int snd_cs4235_mixer_output_accu_set_volume(int vol)
{
switch (vol & 3) {
case 0: return 3 << 5;
case 1: return 0 << 5;
case 2: return 2 << 5;
case 3: return 1 << 5;
}
return 1 << 5;
}
static int snd_cs4235_get_output_accu(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.integer.value[0] = snd_cs4235_mixer_output_accu_get_volume(chip->image[CS4235_LEFT_MASTER]);
ucontrol->value.integer.value[1] = snd_cs4235_mixer_output_accu_get_volume(chip->image[CS4235_RIGHT_MASTER]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_cs4235_put_output_accu(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int change;
unsigned short val1, val2;
val1 = snd_cs4235_mixer_output_accu_set_volume(ucontrol->value.integer.value[0]);
val2 = snd_cs4235_mixer_output_accu_set_volume(ucontrol->value.integer.value[1]);
spin_lock_irqsave(&chip->reg_lock, flags);
val1 = (chip->image[CS4235_LEFT_MASTER] & ~(3 << 5)) | val1;
val2 = (chip->image[CS4235_RIGHT_MASTER] & ~(3 << 5)) | val2;
change = val1 != chip->image[CS4235_LEFT_MASTER] || val2 != chip->image[CS4235_RIGHT_MASTER];
snd_wss_out(chip, CS4235_LEFT_MASTER, val1);
snd_wss_out(chip, CS4235_RIGHT_MASTER, val2);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
static struct snd_kcontrol_new snd_cs4236_controls[] = {
CS4236_DOUBLE("Master Digital Playback Switch", 0,
CS4236_LEFT_MASTER, CS4236_RIGHT_MASTER, 7, 7, 1, 1),
CS4236_DOUBLE("Master Digital Capture Switch", 0,
CS4236_DAC_MUTE, CS4236_DAC_MUTE, 7, 6, 1, 1),
CS4236_MASTER_DIGITAL("Master Digital Volume", 0),
CS4236_DOUBLE("Capture Boost Volume", 0,
CS4236_LEFT_MIX_CTRL, CS4236_RIGHT_MIX_CTRL, 5, 5, 3, 1),
WSS_DOUBLE("PCM Playback Switch", 0,
CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
WSS_DOUBLE("PCM Playback Volume", 0,
CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
CS4236_DOUBLE("DSP Playback Switch", 0,
CS4236_LEFT_DSP, CS4236_RIGHT_DSP, 7, 7, 1, 1),
CS4236_DOUBLE("DSP Playback Volume", 0,
CS4236_LEFT_DSP, CS4236_RIGHT_DSP, 0, 0, 63, 1),
CS4236_DOUBLE("FM Playback Switch", 0,
CS4236_LEFT_FM, CS4236_RIGHT_FM, 7, 7, 1, 1),
CS4236_DOUBLE("FM Playback Volume", 0,
CS4236_LEFT_FM, CS4236_RIGHT_FM, 0, 0, 63, 1),
CS4236_DOUBLE("Wavetable Playback Switch", 0,
CS4236_LEFT_WAVE, CS4236_RIGHT_WAVE, 7, 7, 1, 1),
CS4236_DOUBLE("Wavetable Playback Volume", 0,
CS4236_LEFT_WAVE, CS4236_RIGHT_WAVE, 0, 0, 63, 1),
WSS_DOUBLE("Synth Playback Switch", 0,
CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
WSS_DOUBLE("Synth Volume", 0,
CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
WSS_DOUBLE("Synth Capture Switch", 0,
CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 6, 6, 1, 1),
WSS_DOUBLE("Synth Capture Bypass", 0,
CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 5, 5, 1, 1),
CS4236_DOUBLE("Mic Playback Switch", 0,
CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 6, 6, 1, 1),
CS4236_DOUBLE("Mic Capture Switch", 0,
CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 7, 7, 1, 1),
CS4236_DOUBLE("Mic Volume", 0, CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 0, 0, 31, 1),
CS4236_DOUBLE("Mic Playback Boost", 0,
CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 5, 5, 1, 0),
WSS_DOUBLE("Line Playback Switch", 0,
CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
WSS_DOUBLE("Line Volume", 0,
CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
WSS_DOUBLE("Line Capture Switch", 0,
CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 6, 6, 1, 1),
WSS_DOUBLE("Line Capture Bypass", 0,
CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 5, 5, 1, 1),
WSS_DOUBLE("CD Playback Switch", 0,
CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
WSS_DOUBLE("CD Volume", 0,
CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
WSS_DOUBLE("CD Capture Switch", 0,
CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 6, 6, 1, 1),
CS4236_DOUBLE1("Mono Output Playback Switch", 0,
CS4231_MONO_CTRL, CS4236_RIGHT_MIX_CTRL, 6, 7, 1, 1),
CS4236_DOUBLE1("Mono Playback Switch", 0,
CS4231_MONO_CTRL, CS4236_LEFT_MIX_CTRL, 7, 7, 1, 1),
WSS_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
WSS_SINGLE("Mono Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
WSS_DOUBLE("Capture Volume", 0,
CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
WSS_DOUBLE("Analog Loopback Capture Switch", 0,
CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 7, 7, 1, 0),
WSS_SINGLE("Digital Loopback Playback Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
CS4236_DOUBLE1("Digital Loopback Playback Volume", 0,
CS4231_LOOPBACK, CS4236_RIGHT_LOOPBACK, 2, 0, 63, 1)
};
static struct snd_kcontrol_new snd_cs4235_controls[] = {
WSS_DOUBLE("Master Switch", 0,
CS4235_LEFT_MASTER, CS4235_RIGHT_MASTER, 7, 7, 1, 1),
WSS_DOUBLE("Master Volume", 0,
CS4235_LEFT_MASTER, CS4235_RIGHT_MASTER, 0, 0, 31, 1),
CS4235_OUTPUT_ACCU("Playback Volume", 0),
CS4236_DOUBLE("Master Digital Playback Switch", 0,
CS4236_LEFT_MASTER, CS4236_RIGHT_MASTER, 7, 7, 1, 1),
CS4236_DOUBLE("Master Digital Capture Switch", 0,
CS4236_DAC_MUTE, CS4236_DAC_MUTE, 7, 6, 1, 1),
CS4236_MASTER_DIGITAL("Master Digital Volume", 0),
WSS_DOUBLE("Master Digital Playback Switch", 1,
CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
WSS_DOUBLE("Master Digital Capture Switch", 1,
CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 6, 6, 1, 1),
WSS_DOUBLE("Master Digital Volume", 1,
CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
CS4236_DOUBLE("Capture Volume", 0,
CS4236_LEFT_MIX_CTRL, CS4236_RIGHT_MIX_CTRL, 5, 5, 3, 1),
WSS_DOUBLE("PCM Switch", 0,
CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
WSS_DOUBLE("PCM Volume", 0,
CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
CS4236_DOUBLE("DSP Switch", 0, CS4236_LEFT_DSP, CS4236_RIGHT_DSP, 7, 7, 1, 1),
CS4236_DOUBLE("FM Switch", 0, CS4236_LEFT_FM, CS4236_RIGHT_FM, 7, 7, 1, 1),
CS4236_DOUBLE("Wavetable Switch", 0,
CS4236_LEFT_WAVE, CS4236_RIGHT_WAVE, 7, 7, 1, 1),
CS4236_DOUBLE("Mic Capture Switch", 0,
CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 7, 7, 1, 1),
CS4236_DOUBLE("Mic Playback Switch", 0,
CS4236_LEFT_MIC, CS4236_RIGHT_MIC, 6, 6, 1, 1),
CS4236_SINGLE("Mic Volume", 0, CS4236_LEFT_MIC, 0, 31, 1),
CS4236_SINGLE("Mic Playback Boost", 0, CS4236_LEFT_MIC, 5, 1, 0),
WSS_DOUBLE("Aux Playback Switch", 0,
CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
WSS_DOUBLE("Aux Capture Switch", 0,
CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 6, 6, 1, 1),
WSS_DOUBLE("Aux Volume", 0,
CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
WSS_DOUBLE("Aux Playback Switch", 1,
CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
WSS_DOUBLE("Aux Capture Switch", 1,
CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 6, 6, 1, 1),
WSS_DOUBLE("Aux Volume", 1,
CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
CS4236_DOUBLE1("Master Mono Switch", 0,
CS4231_MONO_CTRL, CS4236_RIGHT_MIX_CTRL, 6, 7, 1, 1),
CS4236_DOUBLE1("Mono Switch", 0,
CS4231_MONO_CTRL, CS4236_LEFT_MIX_CTRL, 7, 7, 1, 1),
WSS_SINGLE("Mono Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
WSS_DOUBLE("Analog Loopback Switch", 0,
CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 7, 7, 1, 0),
};
#define CS4236_IEC958_ENABLE(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4236_info_single, \
.get = snd_cs4236_get_iec958_switch, .put = snd_cs4236_put_iec958_switch, \
.private_value = 1 << 16 }
static int snd_cs4236_get_iec958_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.integer.value[0] = chip->image[CS4231_ALT_FEATURE_1] & 0x02 ? 1 : 0;
#if 0
printk("get valid: ALT = 0x%x, C3 = 0x%x, C4 = 0x%x, C5 = 0x%x, C6 = 0x%x, C8 = 0x%x\n",
snd_wss_in(chip, CS4231_ALT_FEATURE_1),
snd_cs4236_ctrl_in(chip, 3),
snd_cs4236_ctrl_in(chip, 4),
snd_cs4236_ctrl_in(chip, 5),
snd_cs4236_ctrl_in(chip, 6),
snd_cs4236_ctrl_in(chip, 8));
#endif
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_cs4236_put_iec958_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int change;
unsigned short enable, val;
enable = ucontrol->value.integer.value[0] & 1;
mutex_lock(&chip->mce_mutex);
snd_wss_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
val = (chip->image[CS4231_ALT_FEATURE_1] & ~0x0e) | (0<<2) | (enable << 1);
change = val != chip->image[CS4231_ALT_FEATURE_1];
snd_wss_out(chip, CS4231_ALT_FEATURE_1, val);
val = snd_cs4236_ctrl_in(chip, 4) | 0xc0;
snd_cs4236_ctrl_out(chip, 4, val);
udelay(100);
val &= ~0x40;
snd_cs4236_ctrl_out(chip, 4, val);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_wss_mce_down(chip);
mutex_unlock(&chip->mce_mutex);
#if 0
printk("set valid: ALT = 0x%x, C3 = 0x%x, C4 = 0x%x, C5 = 0x%x, C6 = 0x%x, C8 = 0x%x\n",
snd_wss_in(chip, CS4231_ALT_FEATURE_1),
snd_cs4236_ctrl_in(chip, 3),
snd_cs4236_ctrl_in(chip, 4),
snd_cs4236_ctrl_in(chip, 5),
snd_cs4236_ctrl_in(chip, 6),
snd_cs4236_ctrl_in(chip, 8));
#endif
return change;
}
static struct snd_kcontrol_new snd_cs4236_iec958_controls[] = {
CS4236_IEC958_ENABLE("IEC958 Output Enable", 0),
CS4236_SINGLEC("IEC958 Output Validity", 0, 4, 4, 1, 0),
CS4236_SINGLEC("IEC958 Output User", 0, 4, 5, 1, 0),
CS4236_SINGLEC("IEC958 Output CSBR", 0, 4, 6, 1, 0),
CS4236_SINGLEC("IEC958 Output Channel Status Low", 0, 5, 1, 127, 0),
CS4236_SINGLEC("IEC958 Output Channel Status High", 0, 6, 0, 255, 0)
};
static struct snd_kcontrol_new snd_cs4236_3d_controls_cs4235[] = {
CS4236_SINGLEC("3D Control - Switch", 0, 3, 4, 1, 0),
CS4236_SINGLEC("3D Control - Space", 0, 2, 4, 15, 1)
};
static struct snd_kcontrol_new snd_cs4236_3d_controls_cs4237[] = {
CS4236_SINGLEC("3D Control - Switch", 0, 3, 7, 1, 0),
CS4236_SINGLEC("3D Control - Space", 0, 2, 4, 15, 1),
CS4236_SINGLEC("3D Control - Center", 0, 2, 0, 15, 1),
CS4236_SINGLEC("3D Control - Mono", 0, 3, 6, 1, 0),
CS4236_SINGLEC("3D Control - IEC958", 0, 3, 5, 1, 0)
};
static struct snd_kcontrol_new snd_cs4236_3d_controls_cs4238[] = {
CS4236_SINGLEC("3D Control - Switch", 0, 3, 4, 1, 0),
CS4236_SINGLEC("3D Control - Space", 0, 2, 4, 15, 1),
CS4236_SINGLEC("3D Control - Volume", 0, 2, 0, 15, 1),
CS4236_SINGLEC("3D Control - IEC958", 0, 3, 5, 1, 0)
};
int snd_cs4236_mixer(struct snd_wss *chip)
{
struct snd_card *card;
unsigned int idx, count;
int err;
struct snd_kcontrol_new *kcontrol;
if (snd_BUG_ON(!chip || !chip->card))
return -EINVAL;
card = chip->card;
strcpy(card->mixername, snd_wss_chip_id(chip));
if (chip->hardware == WSS_HW_CS4235 ||
chip->hardware == WSS_HW_CS4239) {
for (idx = 0; idx < ARRAY_SIZE(snd_cs4235_controls); idx++) {
if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4235_controls[idx], chip))) < 0)
return err;
}
} else {
for (idx = 0; idx < ARRAY_SIZE(snd_cs4236_controls); idx++) {
if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4236_controls[idx], chip))) < 0)
return err;
}
}
switch (chip->hardware) {
case WSS_HW_CS4235:
case WSS_HW_CS4239:
count = ARRAY_SIZE(snd_cs4236_3d_controls_cs4235);
kcontrol = snd_cs4236_3d_controls_cs4235;
break;
case WSS_HW_CS4237B:
count = ARRAY_SIZE(snd_cs4236_3d_controls_cs4237);
kcontrol = snd_cs4236_3d_controls_cs4237;
break;
case WSS_HW_CS4238B:
count = ARRAY_SIZE(snd_cs4236_3d_controls_cs4238);
kcontrol = snd_cs4236_3d_controls_cs4238;
break;
default:
count = 0;
kcontrol = NULL;
}
for (idx = 0; idx < count; idx++, kcontrol++) {
if ((err = snd_ctl_add(card, snd_ctl_new1(kcontrol, chip))) < 0)
return err;
}
if (chip->hardware == WSS_HW_CS4237B ||
chip->hardware == WSS_HW_CS4238B) {
for (idx = 0; idx < ARRAY_SIZE(snd_cs4236_iec958_controls); idx++) {
if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4236_iec958_controls[idx], chip))) < 0)
return err;
}
}
return 0;
}
EXPORT_SYMBOL(snd_cs4236_create);
EXPORT_SYMBOL(snd_cs4236_pcm);
EXPORT_SYMBOL(snd_cs4236_mixer);
/*
* INIT part
*/
static int __init alsa_cs4236_init(void)
{
return 0;
}
static void __exit alsa_cs4236_exit(void)
{
}
module_init(alsa_cs4236_init)
module_exit(alsa_cs4236_exit)
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