static int snd_cs4236_put_iec958_switch(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *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_cs4231_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_cs4231_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_cs4231_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_cs4231_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 void snd_cs4236_resume(struct snd_cs4231 *chip)
{
int reg;
unsigned long flags;
snd_cs4231_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_cs4231_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_cs4231_mce_down(chip);
}
/*
* Create an AD1845 PCM subdevice on the SoundScape. The AD1845
* is very much like a CS4231, with a few extra bits. We will
* try to support at least some of the extra bits by overriding
* some of the CS4231 callback.
*/
static int __devinit create_ad1845(struct snd_card *card, unsigned port, int irq, int dma1)
{
register struct soundscape *sscape = get_card_soundscape(card);
struct snd_cs4231 *chip;
int err;
#define CS4231_SHARE_HARDWARE (CS4231_HWSHARE_DMA1 | CS4231_HWSHARE_DMA2)
/*
* The AD1845 PCM device is only half-duplex, and so
* we only give it one DMA channel ...
*/
if ((err = snd_cs4231_create(card,
port, -1, irq, dma1, dma1,
CS4231_HW_DETECT,
CS4231_HWSHARE_DMA1, &chip)) == 0) {
unsigned long flags;
struct snd_pcm *pcm;
#define AD1845_FREQ_SEL_ENABLE 0x08
#define AD1845_PWR_DOWN_CTRL 0x1b
#define AD1845_CRYS_CLOCK_SEL 0x1d
/*
* It turns out that the PLAYBACK_ENABLE bit is set
* by the lowlevel driver ...
*
#define AD1845_IFACE_CONFIG \
(CS4231_AUTOCALIB | CS4231_RECORD_ENABLE | CS4231_PLAYBACK_ENABLE)
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, CS4231_IFACE_CTRL, AD1845_IFACE_CONFIG);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_cs4231_mce_down(chip);
*/
/*
* The input clock frequency on the SoundScape must
* be 14.31818 MHz, because we must set this register
* to get the playback to sound correct ...
*/
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, AD1845_CRYS_CLOCK_SEL, 0x20);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_cs4231_mce_down(chip);
/*
* More custom configuration:
* a) select "mode 2", and provide a current drive of 8 mA
* b) enable frequency selection (for capture/playback)
*/
spin_lock_irqsave(&chip->reg_lock, flags);
snd_cs4231_out(chip, CS4231_MISC_INFO, (CS4231_MODE2 | 0x10));
snd_cs4231_out(chip, AD1845_PWR_DOWN_CTRL, snd_cs4231_in(chip, AD1845_PWR_DOWN_CTRL) | AD1845_FREQ_SEL_ENABLE);
spin_unlock_irqrestore(&chip->reg_lock, flags);
if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0) {
snd_printk(KERN_ERR "sscape: No PCM device for AD1845 chip\n");
goto _error;
}
if ((err = snd_cs4231_mixer(chip)) < 0) {
snd_printk(KERN_ERR "sscape: No mixer device for AD1845 chip\n");
goto _error;
}
if ((err = snd_ctl_add(card, snd_ctl_new1(&midi_mixer_ctl, chip))) < 0) {
snd_printk(KERN_ERR "sscape: Could not create MIDI mixer control\n");
goto _error;
}
strcpy(card->driver, "SoundScape");
strcpy(card->shortname, pcm->name);
snprintf(card->longname, sizeof(card->longname),
"%s at 0x%lx, IRQ %d, DMA %d\n",
pcm->name, chip->port, chip->irq, chip->dma1);
chip->set_playback_format = ad1845_playback_format;
chip->set_capture_format = ad1845_capture_format;
sscape->chip = chip;
}
_error:
return err;
}
