ak4531_codec.c

linux2.6.16版本

	val2 |= (ucontrol->value.integer.value[1] & 1) << left_shift;
	val1 |= (ucontrol->value.integer.value[2] & 1) << right_shift;
	val2 |= (ucontrol->value.integer.value[3] & 1) << right_shift;
	change = val1 != ak4531->regs[reg1] || val2 != ak4531->regs[reg2];
	ak4531->write(ak4531, reg1, ak4531->regs[reg1] = val1);
	ak4531->write(ak4531, reg2, ak4531->regs[reg2] = val2);
	up(&ak4531->reg_mutex);
	return change;
}

static struct snd_kcontrol_new snd_ak4531_controls[] = {

AK4531_DOUBLE("Master Playback Switch", 0, AK4531_LMASTER, AK4531_RMASTER, 7, 7, 1, 1),
AK4531_DOUBLE("Master Playback Volume", 0, AK4531_LMASTER, AK4531_RMASTER, 0, 0, 0x1f, 1),

AK4531_SINGLE("Master Mono Playback Switch", 0, AK4531_MONO_OUT, 7, 1, 1),
AK4531_SINGLE("Master Mono Playback Volume", 0, AK4531_MONO_OUT, 0, 0x07, 1),

AK4531_DOUBLE("PCM Switch", 0, AK4531_LVOICE, AK4531_RVOICE, 7, 7, 1, 1),
AK4531_DOUBLE("PCM Volume", 0, AK4531_LVOICE, AK4531_RVOICE, 0, 0, 0x1f, 1),
AK4531_DOUBLE("PCM Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 3, 2, 1, 0),
AK4531_DOUBLE("PCM Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 2, 2, 1, 0),

AK4531_DOUBLE("PCM Switch", 1, AK4531_LFM, AK4531_RFM, 7, 7, 1, 1),
AK4531_DOUBLE("PCM Volume", 1, AK4531_LFM, AK4531_RFM, 0, 0, 0x1f, 1),
AK4531_DOUBLE("PCM Playback Switch", 1, AK4531_OUT_SW1, AK4531_OUT_SW1, 6, 5, 1, 0),
AK4531_INPUT_SW("PCM Capture Route", 1, AK4531_LIN_SW1, AK4531_RIN_SW1, 6, 5),

AK4531_DOUBLE("CD Switch", 0, AK4531_LCD, AK4531_RCD, 7, 7, 1, 1),
AK4531_DOUBLE("CD Volume", 0, AK4531_LCD, AK4531_RCD, 0, 0, 0x1f, 1),
AK4531_DOUBLE("CD Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 2, 1, 1, 0),
AK4531_INPUT_SW("CD Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 2, 1),

AK4531_DOUBLE("Line Switch", 0, AK4531_LLINE, AK4531_RLINE, 7, 7, 1, 1),
AK4531_DOUBLE("Line Volume", 0, AK4531_LLINE, AK4531_RLINE, 0, 0, 0x1f, 1),
AK4531_DOUBLE("Line Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 4, 3, 1, 0),
AK4531_INPUT_SW("Line Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 4, 3),

AK4531_DOUBLE("Aux Switch", 0, AK4531_LAUXA, AK4531_RAUXA, 7, 7, 1, 1),
AK4531_DOUBLE("Aux Volume", 0, AK4531_LAUXA, AK4531_RAUXA, 0, 0, 0x1f, 1),
AK4531_DOUBLE("Aux Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 5, 4, 1, 0),
AK4531_INPUT_SW("Aux Capture Route", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 4, 3),

AK4531_SINGLE("Mono Switch", 0, AK4531_MONO1, 7, 1, 1),
AK4531_SINGLE("Mono Volume", 0, AK4531_MONO1, 0, 0x1f, 1),
AK4531_SINGLE("Mono Playback Switch", 0, AK4531_OUT_SW2, 0, 1, 0),
AK4531_DOUBLE("Mono Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 0, 0, 1, 0),

AK4531_SINGLE("Mono Switch", 1, AK4531_MONO2, 7, 1, 1),
AK4531_SINGLE("Mono Volume", 1, AK4531_MONO2, 0, 0x1f, 1),
AK4531_SINGLE("Mono Playback Switch", 1, AK4531_OUT_SW2, 1, 1, 0),
AK4531_DOUBLE("Mono Capture Switch", 1, AK4531_LIN_SW2, AK4531_RIN_SW2, 1, 1, 1, 0),

AK4531_SINGLE("Mic Volume", 0, AK4531_MIC, 0, 0x1f, 1),
AK4531_SINGLE("Mic Switch", 0, AK4531_MIC, 7, 1, 1),
AK4531_SINGLE("Mic Playback Switch", 0, AK4531_OUT_SW1, 0, 1, 0),
AK4531_DOUBLE("Mic Capture Switch", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 0, 0, 1, 0),

AK4531_DOUBLE("Mic Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 7, 7, 1, 0),
AK4531_DOUBLE("Mono1 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 6, 6, 1, 0),
AK4531_DOUBLE("Mono2 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 5, 5, 1, 0),

AK4531_SINGLE("AD Input Select", 0, AK4531_AD_IN, 0, 1, 0),
AK4531_SINGLE("Mic Boost (+30dB)", 0, AK4531_MIC_GAIN, 0, 1, 0)
};

static int snd_ak4531_free(struct snd_ak4531 *ak4531)
{
	if (ak4531) {
		if (ak4531->private_free)
			ak4531->private_free(ak4531);
		kfree(ak4531);
	}
	return 0;
}

static int snd_ak4531_dev_free(struct snd_device *device)
{
	struct snd_ak4531 *ak4531 = device->device_data;
	return snd_ak4531_free(ak4531);
}

static u8 snd_ak4531_initial_map[0x19 + 1] = {
	0x9f,		/* 00: Master Volume Lch */
	0x9f,		/* 01: Master Volume Rch */
	0x9f,		/* 02: Voice Volume Lch */
	0x9f,		/* 03: Voice Volume Rch */
	0x9f,		/* 04: FM Volume Lch */
	0x9f,		/* 05: FM Volume Rch */
	0x9f,		/* 06: CD Audio Volume Lch */
	0x9f,		/* 07: CD Audio Volume Rch */
	0x9f,		/* 08: Line Volume Lch */
	0x9f,		/* 09: Line Volume Rch */
	0x9f,		/* 0a: Aux Volume Lch */
	0x9f,		/* 0b: Aux Volume Rch */
	0x9f,		/* 0c: Mono1 Volume */
	0x9f,		/* 0d: Mono2 Volume */
	0x9f,		/* 0e: Mic Volume */
	0x87,		/* 0f: Mono-out Volume */
	0x00,		/* 10: Output Mixer SW1 */
	0x00,		/* 11: Output Mixer SW2 */
	0x00,		/* 12: Lch Input Mixer SW1 */
	0x00,		/* 13: Rch Input Mixer SW1 */
	0x00,		/* 14: Lch Input Mixer SW2 */
	0x00,		/* 15: Rch Input Mixer SW2 */
	0x00,		/* 16: Reset & Power Down */
	0x00,		/* 17: Clock Select */
	0x00,		/* 18: AD Input Select */
	0x01		/* 19: Mic Amp Setup */
};

int snd_ak4531_mixer(struct snd_card *card, struct snd_ak4531 *_ak4531,
		     struct snd_ak4531 **rak4531)
{
	unsigned int idx;
	int err;
	struct snd_ak4531 *ak4531;
	static struct snd_device_ops ops = {
		.dev_free =	snd_ak4531_dev_free,
	};

	snd_assert(rak4531 != NULL, return -EINVAL);
	*rak4531 = NULL;
	snd_assert(card != NULL && _ak4531 != NULL, return -EINVAL);
	ak4531 = kzalloc(sizeof(*ak4531), GFP_KERNEL);
	if (ak4531 == NULL)
		return -ENOMEM;
	*ak4531 = *_ak4531;
	init_MUTEX(&ak4531->reg_mutex);
	if ((err = snd_component_add(card, "AK4531")) < 0) {
		snd_ak4531_free(ak4531);
		return err;
	}
	strcpy(card->mixername, "Asahi Kasei AK4531");
	ak4531->write(ak4531, AK4531_RESET, 0x03);	/* no RST, PD */
	udelay(100);
	ak4531->write(ak4531, AK4531_CLOCK, 0x00);	/* CODEC ADC and CODEC DAC use {LR,B}CLK2 and run off LRCLK2 PLL */
	for (idx = 0; idx <= 0x19; idx++) {
		if (idx == AK4531_RESET || idx == AK4531_CLOCK)
			continue;
		ak4531->write(ak4531, idx, ak4531->regs[idx] = snd_ak4531_initial_map[idx]);	/* recording source is mixer */
	}
	for (idx = 0; idx < ARRAY_SIZE(snd_ak4531_controls); idx++) {
		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ak4531_controls[idx], ak4531))) < 0) {
			snd_ak4531_free(ak4531);
			return err;
		}
	}
	snd_ak4531_proc_init(card, ak4531);
	if ((err = snd_device_new(card, SNDRV_DEV_CODEC, ak4531, &ops)) < 0) {
		snd_ak4531_free(ak4531);
		return err;
	}

#if 0
	snd_ak4531_dump(ak4531);
#endif
	*rak4531 = ak4531;
	return 0;
}

/*
 * power management
 */
#ifdef CONFIG_PM
void snd_ak4531_suspend(struct snd_ak4531 *ak4531)
{
	/* mute */
	ak4531->write(ak4531, AK4531_LMASTER, 0x9f);
	ak4531->write(ak4531, AK4531_RMASTER, 0x9f);
	/* powerdown */
	ak4531->write(ak4531, AK4531_RESET, 0x01);
}

void snd_ak4531_resume(struct snd_ak4531 *ak4531)
{
	int idx;

	/* initialize */
	ak4531->write(ak4531, AK4531_RESET, 0x03);
	udelay(100);
	ak4531->write(ak4531, AK4531_CLOCK, 0x00);
	/* restore mixer registers */
	for (idx = 0; idx <= 0x19; idx++) {
		if (idx == AK4531_RESET || idx == AK4531_CLOCK)
			continue;
		ak4531->write(ak4531, idx, ak4531->regs[idx]);
	}
}
#endif

#ifdef CONFIG_PROC_FS
/*
 * /proc interface
 */

static void snd_ak4531_proc_read(struct snd_info_entry *entry, 
				 struct snd_info_buffer *buffer)
{
	struct snd_ak4531 *ak4531 = entry->private_data;

	snd_iprintf(buffer, "Asahi Kasei AK4531\n\n");
	snd_iprintf(buffer, "Recording source   : %s\n"
		    "MIC gain           : %s\n",
		    ak4531->regs[AK4531_AD_IN] & 1 ? "external" : "mixer",
		    ak4531->regs[AK4531_MIC_GAIN] & 1 ? "+30dB" : "+0dB");
}

static void snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531)
{
	struct snd_info_entry *entry;

	if (! snd_card_proc_new(card, "ak4531", &entry))
		snd_info_set_text_ops(entry, ak4531, 1024, snd_ak4531_proc_read);
}
#endif

EXPORT_SYMBOL(snd_ak4531_mixer);
#ifdef CONFIG_PM
EXPORT_SYMBOL(snd_ak4531_suspend);
EXPORT_SYMBOL(snd_ak4531_resume);
#endif

/*
 *  INIT part
 */

static int __init alsa_ak4531_init(void)
{
	return 0;
}

static void __exit alsa_ak4531_exit(void)
{
}

module_init(alsa_ak4531_init)
module_exit(alsa_ak4531_exit)