#include "../alsa-kernel/ppc/tumbler.c"

/*

 * PMac Tumbler/Snapper lowlevel functions

 *

 * Copyright (c) by Takashi Iwai <tiwai@suse.de>

 *

 *   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

 *

 *   Rene Rebe <rene.rebe@gmx.net>:

 *     * update from shadow registers on wakeup and headphone plug

 *     * automatically toggle DRC on headphone plug

 *	

 */

#include <sound/driver.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/i2c.h>

#include <linux/i2c-dev.h>

#include <linux/kmod.h>

#include <linux/slab.h>

#include <linux/interrupt.h>

#include <sound/core.h>

#include <asm/io.h>

#include <asm/irq.h>

#ifdef CONFIG_PPC_HAS_FEATURE_CALLS

#include <asm/pmac_feature.h>

#endif

#include "pmac.h"

#include "tumbler_volume.h"

/* i2c address for tumbler */

#define TAS_I2C_ADDR	0x34

/* registers */

#define TAS_REG_MCS	0x01	/* main control */

#define TAS_REG_DRC	0x02

#define TAS_REG_VOL	0x04

#define TAS_REG_TREBLE	0x05

#define TAS_REG_BASS	0x06

#define TAS_REG_INPUT1	0x07

#define TAS_REG_INPUT2	0x08

/* tas3001c */

#define TAS_REG_PCM	TAS_REG_INPUT1

/* tas3004 */

#define TAS_REG_LMIX	TAS_REG_INPUT1

#define TAS_REG_RMIX	TAS_REG_INPUT2

#define TAS_REG_MCS2	0x43		/* main control 2 */

#define TAS_REG_ACS	0x40		/* analog control */

/* mono volumes for tas3001c/tas3004 */

enum {

	VOL_IDX_PCM_MONO, /* tas3001c only */

	VOL_IDX_BASS, VOL_IDX_TREBLE,

	VOL_IDX_LAST_MONO

};

/* stereo volumes for tas3004 */

enum {

	VOL_IDX_PCM, VOL_IDX_PCM2, VOL_IDX_ADC,

	VOL_IDX_LAST_MIX

};

typedef struct pmac_gpio {

#ifdef CONFIG_PPC_HAS_FEATURE_CALLS

	unsigned int addr;

#else

	void *addr;

#endif

	int active_state;

} pmac_gpio_t;

typedef struct pmac_tumbler_t {

	pmac_keywest_t i2c;

	pmac_gpio_t audio_reset;

	pmac_gpio_t amp_mute;

	pmac_gpio_t hp_mute;

	pmac_gpio_t hp_detect;

	int headphone_irq;

	unsigned int master_vol[2];

	unsigned int master_switch[2];

	unsigned int mono_vol[VOL_IDX_LAST_MONO];

	unsigned int mix_vol[VOL_IDX_LAST_MIX][2]; /* stereo volumes for tas3004 */

	int drc_range;

	int drc_enable;

	int capture_source;

} pmac_tumbler_t;

/*

 */

static int send_init_client(pmac_keywest_t *i2c, unsigned int *regs)

{

	while (*regs > 0) {

		int err, count = 10;

		do {

			err =  snd_pmac_keywest_write_byte(i2c, regs[0], regs[1]);

			if (err >= 0)

				break;

			mdelay(10);

		} while (count--);

		if (err < 0)

			return -ENXIO;

		regs += 2;

	}

	return 0;

}

static int tumbler_init_client(pmac_keywest_t *i2c)

{

	static unsigned int regs[] = {

		/* normal operation, SCLK=64fps, i2s output, i2s input, 16bit width */

		TAS_REG_MCS, (1<<6)|(2<<4)|(2<<2)|0,

		0, /* terminator */

	};

	return send_init_client(i2c, regs);

}

static int snapper_init_client(pmac_keywest_t *i2c)

{

	static unsigned int regs[] = {

		/* normal operation, SCLK=64fps, i2s output, 16bit width */

		TAS_REG_MCS, (1<<6)|(2<<4)|0,

		/* normal operation, all-pass mode */

		TAS_REG_MCS2, (1<<1),

		/* normal output, no deemphasis, A input, power-up, line-in */

		TAS_REG_ACS, 0,

		0, /* terminator */

	};

	return send_init_client(i2c, regs);

}

/*

 * gpio access

 */

#ifdef CONFIG_PPC_HAS_FEATURE_CALLS

#define do_gpio_write(gp, val) \

	pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, (gp)->addr, val)

#define do_gpio_read(gp) \

	pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, (gp)->addr, 0)

#define tumbler_gpio_free(gp) /* NOP */

#else

#define do_gpio_write(gp, val)	writeb(val, (gp)->addr)

#define do_gpio_read(gp)	readb((gp)->addr)

static inline void tumbler_gpio_free(pmac_gpio_t *gp)

{

	if (gp->addr) {

		iounmap(gp->addr);

		gp->addr = 0;

	}

}

#endif /* CONFIG_PPC_HAS_FEATURE_CALLS */

static void write_audio_gpio(pmac_gpio_t *gp, int active)

{

	if (! gp->addr)

		return;

	active = active ? gp->active_state : !gp->active_state;

	do_gpio_write(gp, active ? 0x05 : 0x04);

}

static int read_audio_gpio(pmac_gpio_t *gp)

{

	int ret;

	if (! gp->addr)

		return 0;

	ret = ((do_gpio_read(gp) & 0x02) !=0);

	return ret == gp->active_state;

}

/*

 * update master volume

 */

static int tumbler_set_master_volume(pmac_tumbler_t *mix)

{

	unsigned char block[6];

	unsigned int left_vol, right_vol;

	if (! mix->i2c.client)

		return -ENODEV;

	if (! mix->master_switch[0])

		left_vol = 0;

	else {

		left_vol = mix->master_vol[0];

		if (left_vol >= ARRAY_SIZE(master_volume_table))

			left_vol = ARRAY_SIZE(master_volume_table) - 1;

		left_vol = master_volume_table[left_vol];

	}

	if (! mix->master_switch[1])

		right_vol = 0;

	else {

		right_vol = mix->master_vol[1];

		if (right_vol >= ARRAY_SIZE(master_volume_table))

			right_vol = ARRAY_SIZE(master_volume_table) - 1;

		right_vol = master_volume_table[right_vol];

	}

	block[0] = (left_vol >> 16) & 0xff;

	block[1] = (left_vol >> 8)  & 0xff;

	block[2] = (left_vol >> 0)  & 0xff;

	block[3] = (right_vol >> 16) & 0xff;

	block[4] = (right_vol >> 8)  & 0xff;

	block[5] = (right_vol >> 0)  & 0xff;

	if (snd_pmac_keywest_write(&mix->i2c, TAS_REG_VOL, 6, block) < 0) {

		snd_printk("failed to set volume \n");  

		return -EINVAL; 

	}

	return 0;

}

/* output volume */

static int tumbler_info_master_volume(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 = ARRAY_SIZE(master_volume_table) - 1;

	return 0;

}

static int tumbler_get_master_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix = chip->mixer_data;

	snd_assert(mix, return -ENODEV);

	ucontrol->value.integer.value[0] = mix->master_vol[0];

	ucontrol->value.integer.value[1] = mix->master_vol[1];

	return 0;

}

static int tumbler_put_master_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix = chip->mixer_data;

	int change;

	snd_assert(mix, return -ENODEV);

	change = mix->master_vol[0] != ucontrol->value.integer.value[0] ||

		mix->master_vol[1] != ucontrol->value.integer.value[1];

	if (change) {

		mix->master_vol[0] = ucontrol->value.integer.value[0];

		mix->master_vol[1] = ucontrol->value.integer.value[1];

		tumbler_set_master_volume(mix);

	}

	return change;

}

/* output switch */

static int tumbler_get_master_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix = chip->mixer_data;

	snd_assert(mix, return -ENODEV);

	ucontrol->value.integer.value[0] = mix->master_switch[0];

	ucontrol->value.integer.value[1] = mix->master_switch[1];

	return 0;

}

static int tumbler_put_master_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix = chip->mixer_data;

	int change;

	snd_assert(mix, return -ENODEV);

	change = mix->master_switch[0] != ucontrol->value.integer.value[0] ||

		mix->master_switch[1] != ucontrol->value.integer.value[1];

	if (change) {

		mix->master_switch[0] = !!ucontrol->value.integer.value[0];

		mix->master_switch[1] = !!ucontrol->value.integer.value[1];

		tumbler_set_master_volume(mix);

	}

	return change;

}

/*

 * TAS3001c dynamic range compression

 */

#define TAS3001_DRC_MAX		0x5f

static int tumbler_set_drc(pmac_tumbler_t *mix)

{

	unsigned char val[2];

	if (! mix->i2c.client)

		return -ENODEV;

	if (mix->drc_enable) {

		val[0] = 0xc1; /* enable, 3:1 compression */

		if (mix->drc_range > TAS3001_DRC_MAX)

			val[1] = 0xf0;

		else if (mix->drc_range < 0)

			val[1] = 0x91;

		else

			val[1] = mix->drc_range + 0x91;

	} else {

		val[0] = 0;

		val[1] = 0;

	}

	if (snd_pmac_keywest_write(&mix->i2c, TAS_REG_DRC, 2, val) < 0) {

		snd_printk("failed to set DRC\n");  

		return -EINVAL; 

	}

	return 0;

}

/*

 * TAS3004

 */

#define TAS3004_DRC_MAX		0xef

static int snapper_set_drc(pmac_tumbler_t *mix)

{

	unsigned char val[6];

	if (! mix->i2c.client)

		return -ENODEV;

	if (mix->drc_enable)

		val[0] = 0x50; /* 3:1 above threshold */

	else

		val[0] = 0x51; /* disabled */

	val[1] = 0x02; /* 1:1 below threshold */

	if (mix->drc_range > 0xef)

		val[2] = 0xef;

	else if (mix->drc_range < 0)

		val[2] = 0x00;

	else

		val[2] = mix->drc_range;

	val[3] = 0xb0;

	val[4] = 0x60;

	val[5] = 0xa0;

	if (snd_pmac_keywest_write(&mix->i2c, TAS_REG_DRC, 6, val) < 0) {

		snd_printk("failed to set DRC\n");  

		return -EINVAL; 

	}

	return 0;

}

static int tumbler_info_drc_value(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;

	uinfo->count = 1;

	uinfo->value.integer.min = 0;

	uinfo->value.integer.max =

		chip->model == PMAC_TUMBLER ? TAS3001_DRC_MAX : TAS3004_DRC_MAX;

	return 0;

}

static int tumbler_get_drc_value(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	ucontrol->value.integer.value[0] = mix->drc_range;

	return 0;

}

static int tumbler_put_drc_value(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	int change;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	change = mix->drc_range != ucontrol->value.integer.value[0];

	if (change) {

		mix->drc_range = ucontrol->value.integer.value[0];

		if (chip->model == PMAC_TUMBLER)

			tumbler_set_drc(mix);

		else

			snapper_set_drc(mix);

	}

	return change;

}

static int tumbler_get_drc_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	ucontrol->value.integer.value[0] = mix->drc_enable;

	return 0;

}

static int tumbler_put_drc_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	int change;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	change = mix->drc_enable != ucontrol->value.integer.value[0];

	if (change) {

		mix->drc_enable = !!ucontrol->value.integer.value[0];

		if (chip->model == PMAC_TUMBLER)

			tumbler_set_drc(mix);

		else

			snapper_set_drc(mix);

	}

	return change;

}

/*

 * mono volumes

 */

struct tumbler_mono_vol {

	int index;

	int reg;

	int bytes;

	unsigned int max;

	unsigned int *table;

};

static int tumbler_set_mono_volume(pmac_tumbler_t *mix, struct tumbler_mono_vol *info)

{

	unsigned char block[4];

	unsigned int vol;

	int i;

	if (! mix->i2c.client)

		return -ENODEV;

	vol = mix->mono_vol[info->index];

	if (vol >= info->max)

		vol = info->max - 1;

	vol = info->table[vol];

	for (i = 0; i < info->bytes; i++)

		block[i] = (vol >> ((info->bytes - i - 1) * 8)) & 0xff;

	if (snd_pmac_keywest_write(&mix->i2c, info->reg, info->bytes, block) < 0) {

		snd_printk("failed to set mono volume %d\n", info->index);  

		return -EINVAL; 

	}

	return 0;

}

static int tumbler_info_mono(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)

{

	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;

	uinfo->count = 1;

	uinfo->value.integer.min = 0;

	uinfo->value.integer.max = info->max - 1;

	return 0;

}

static int tumbler_get_mono(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	ucontrol->value.integer.value[0] = mix->mono_vol[info->index];

	return 0;

}

static int tumbler_put_mono(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	int change;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	change = mix->mono_vol[info->index] != ucontrol->value.integer.value[0];

	if (change) {

		mix->mono_vol[info->index] = ucontrol->value.integer.value[0];

		tumbler_set_mono_volume(mix, info);

	}

	return change;

}

/* TAS3001c mono volumes */

static struct tumbler_mono_vol tumbler_pcm_vol_info = {

	.index = VOL_IDX_PCM_MONO,

	.reg = TAS_REG_PCM,

	.bytes = 3,

	.max = ARRAY_SIZE(mixer_volume_table),

	.table = mixer_volume_table,

};

static struct tumbler_mono_vol tumbler_bass_vol_info = {

	.index = VOL_IDX_BASS,

	.reg = TAS_REG_BASS,

	.bytes = 1,

	.max = ARRAY_SIZE(bass_volume_table),

	.table = bass_volume_table,

};

static struct tumbler_mono_vol tumbler_treble_vol_info = {

	.index = VOL_IDX_TREBLE,

	.reg = TAS_REG_TREBLE,

	.bytes = 1,

	.max = ARRAY_SIZE(treble_volume_table),

	.table = treble_volume_table,

};

/* TAS3004 mono volumes */

static struct tumbler_mono_vol snapper_bass_vol_info = {

	.index = VOL_IDX_BASS,

	.reg = TAS_REG_BASS,

	.bytes = 1,

	.max = ARRAY_SIZE(snapper_bass_volume_table),

	.table = snapper_bass_volume_table,

};

static struct tumbler_mono_vol snapper_treble_vol_info = {

	.index = VOL_IDX_TREBLE,

	.reg = TAS_REG_TREBLE,

	.bytes = 1,

	.max = ARRAY_SIZE(snapper_treble_volume_table),

	.table = snapper_treble_volume_table,

};

#define DEFINE_MONO(xname,type) { \

	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\

	.name = xname, \

	.info = tumbler_info_mono, \

	.get = tumbler_get_mono, \

	.put = tumbler_put_mono, \

	.private_value = (unsigned long)(&tumbler_##type##_vol_info), \

}

#define DEFINE_SNAPPER_MONO(xname,type) { \

	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\

	.name = xname, \

	.info = tumbler_info_mono, \

	.get = tumbler_get_mono, \

	.put = tumbler_put_mono, \

	.private_value = (unsigned long)(&snapper_##type##_vol_info), \

}

/*

 * snapper mixer volumes

 */

static int snapper_set_mix_vol1(pmac_tumbler_t *mix, int idx, int ch, int reg)

{

	int i, j, vol;

	unsigned char block[9];

	vol = mix->mix_vol[idx][ch];

	if (vol >= ARRAY_SIZE(mixer_volume_table)) {

		vol = ARRAY_SIZE(mixer_volume_table) - 1;

		mix->mix_vol[idx][ch] = vol;

	}

	for (i = 0; i < 3; i++) {

		vol = mix->mix_vol[i][ch];

		vol = mixer_volume_table[vol];

		for (j = 0; j < 3; j++)

			block[i * 3 + j] = (vol >> ((2 - j) * 8)) & 0xff;

	}

	if (snd_pmac_keywest_write(&mix->i2c, reg, 9, block) < 0) {

		snd_printk("failed to set mono volume %d\n", reg);  

		return -EINVAL; 

	}

	return 0;

}

static int snapper_set_mix_vol(pmac_tumbler_t *mix, int idx)

{

	if (! mix->i2c.client)

		return -ENODEV;

	if (snapper_set_mix_vol1(mix, idx, 0, TAS_REG_LMIX) < 0 ||

	    snapper_set_mix_vol1(mix, idx, 1, TAS_REG_RMIX) < 0)

		return -EINVAL;

	return 0;

}

static int snapper_info_mix(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 = ARRAY_SIZE(mixer_volume_table) - 1;

	return 0;

}

static int snapper_get_mix(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	int idx = (int)kcontrol->private_value;

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	ucontrol->value.integer.value[0] = mix->mix_vol[idx][0];

	ucontrol->value.integer.value[1] = mix->mix_vol[idx][1];

	return 0;

}

static int snapper_put_mix(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	int idx = (int)kcontrol->private_value;

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	int change;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	change = mix->mix_vol[idx][0] != ucontrol->value.integer.value[0] ||

		mix->mix_vol[idx][1] != ucontrol->value.integer.value[1];

	if (change) {

		mix->mix_vol[idx][0] = ucontrol->value.integer.value[0];

		mix->mix_vol[idx][1] = ucontrol->value.integer.value[1];

		snapper_set_mix_vol(mix, idx);

	}

	return change;

}

/*

 * mute switches

 */

enum { TUMBLER_MUTE_HP, TUMBLER_MUTE_AMP };

static int tumbler_get_mute_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	pmac_gpio_t *gp;

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	gp = (kcontrol->private_value == TUMBLER_MUTE_HP) ? &mix->hp_mute : &mix->amp_mute;

	ucontrol->value.integer.value[0] = ! read_audio_gpio(gp);

	return 0;

}

static int tumbler_put_mute_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix;

	pmac_gpio_t *gp;

	int val;

#ifdef PMAC_SUPPORT_AUTOMUTE

	if (chip->update_automute && chip->auto_mute)

		return 0; /* don't touch in the auto-mute mode */

#endif	

	if (! (mix = chip->mixer_data))

		return -ENODEV;

	gp = (kcontrol->private_value == TUMBLER_MUTE_HP) ? &mix->hp_mute : &mix->amp_mute;

	val = ! read_audio_gpio(gp);

	if (val != ucontrol->value.integer.value[0]) {

		write_audio_gpio(gp, ! ucontrol->value.integer.value[0]);

		return 1;

	}

	return 0;

}

static int snapper_set_capture_source(pmac_tumbler_t *mix)

{

	if (! mix->i2c.client)

		return -ENODEV;

	return snd_pmac_keywest_write_byte(&mix->i2c, TAS_REG_ACS,

					   mix->capture_source ? 2 : 0);

}

static int snapper_info_capture_source(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)

{

	static char *texts[2] = {

		"Line", "Mic"

	};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;

	uinfo->count = 1;

	uinfo->value.enumerated.items = 2;

	if (uinfo->value.enumerated.item > 1)

		uinfo->value.enumerated.item = 1;

	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);

	return 0;

}

static int snapper_get_capture_source(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix = chip->mixer_data;

	snd_assert(mix, return -ENODEV);

	ucontrol->value.integer.value[0] = mix->capture_source;

	return 0;

}

static int snapper_put_capture_source(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)

{

	pmac_t *chip = snd_kcontrol_chip(kcontrol);

	pmac_tumbler_t *mix = chip->mixer_data;

	int change;

	snd_assert(mix, return -ENODEV);

	change = ucontrol->value.integer.value[0] != mix->capture_source;

	if (change) {

		mix->capture_source = !!ucontrol->value.integer.value[0];

		snapper_set_capture_source(mix);

	}

	return change;

}

#define DEFINE_SNAPPER_MIX(xname,idx,ofs) { \

	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\

	.name = xname, \

	.info = snapper_info_mix, \

	.get = snapper_get_mix, \

	.put = snapper_put_mix, \

	.index = idx,\

	.private_value = ofs, \

}

/*

 */

static snd_kcontrol_new_t tumbler_mixers[] __initdata = {

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	  .name = "Master Playback Volume",

	  .info = tumbler_info_master_volume,

	  .get = tumbler_get_master_volume,

	  .put = tumbler_put_master_volume

	},

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	  .name = "Master Playback Switch",

	  .info = snd_pmac_boolean_stereo_info,

	  .get = tumbler_get_master_switch,

	  .put = tumbler_put_master_switch

	},

	DEFINE_MONO("Tone Control - Bass", bass),

	DEFINE_MONO("Tone Control - Treble", treble),

	DEFINE_MONO("PCM Playback Volume", pcm),

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	  .name = "DRC Range",

	  .info = tumbler_info_drc_value,

	  .get = tumbler_get_drc_value,

	  .put = tumbler_put_drc_value

	},

};

static snd_kcontrol_new_t snapper_mixers[] __initdata = {

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	  .name = "Master Playback Volume",

	  .info = tumbler_info_master_volume,

	  .get = tumbler_get_master_volume,

	  .put = tumbler_put_master_volume

	},

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	  .name = "Master Playback Switch",

	  .info = snd_pmac_boolean_stereo_info,

	  .get = tumbler_get_master_switch,

	  .put = tumbler_put_master_switch

	},

	DEFINE_SNAPPER_MIX("PCM Playback Volume", 0, VOL_IDX_PCM),

	DEFINE_SNAPPER_MIX("PCM Playback Volume", 1, VOL_IDX_PCM2),

	DEFINE_SNAPPER_MIX("Monitor Mix Volume", 0, VOL_IDX_ADC),

	DEFINE_SNAPPER_MONO("Tone Control - Bass", bass),

	DEFINE_SNAPPER_MONO("Tone Control - Treble", treble),

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	  .name = "DRC Range",

	  .info = tumbler_info_drc_value,

	  .get = tumbler_get_drc_value,

	  .put = tumbler_put_drc_value

	},

	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	  .name = "Input Source", /* FIXME: "Capture Source" doesn't work properly */

	  .info = snapper_info_capture_source,

	  .get = snapper_get_capture_source,

	  .put = snapper_put_capture_source

	},

};

static snd_kcontrol_new_t tumbler_hp_sw __initdata = {

	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	.name = "Headphone Playback Switch",

	.info = snd_pmac_boolean_mono_info,

	.get = tumbler_get_mute_switch,

	.put = tumbler_put_mute_switch,

	.private_value = TUMBLER_MUTE_HP,

};

static snd_kcontrol_new_t tumbler_speaker_sw __initdata = {

	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	.name = "PC Speaker Playback Switch",

	.info = snd_pmac_boolean_mono_info,

	.get = tumbler_get_mute_switch,

	.put = tumbler_put_mute_switch,

	.private_value = TUMBLER_MUTE_AMP,

};

static snd_kcontrol_new_t tumbler_drc_sw __initdata = {

	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,

	.name = "DRC Switch",

	.info = snd_pmac_boolean_mono_info,

	.get = tumbler_get_drc_switch,

	.put = tumbler_put_drc_switch

};

#ifdef PMAC_SUPPORT_AUTOMUTE

/*

 * auto-mute stuffs

 */

static int tumbler_detect_headphone(pmac_t *chip)

{

	pmac_tumbler_t *mix = chip->mixer_data;

	return read_audio_gpio(&mix->hp_detect);

}

static void check_mute(pmac_t *chip, pmac_gpio_t *gp, int val, int do_notify, snd_kcontrol_t *sw)

{

	//pmac_tumbler_t *mix = chip->mixer_data;

	if (val != read_audio_gpio(gp)) {

		write_audio_gpio(gp, val);

		if (do_notify)

			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &sw->id);

	}

}

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)

static struct tq_struct device_change;

#else

static struct work_struct device_change;

#endif

static void

device_change_handler(void *self)

{

	pmac_t *chip = (pmac_t*) self;

	pmac_tumbler_t *mix;

	if (!chip)

		return;

	mix = chip->mixer_data;

	/* first set the DRC so the speaker do not explode -ReneR */

	if (chip->model == PMAC_TUMBLER)

		tumbler_set_drc(mix);

	else

		snapper_set_drc(mix);

	/* reset the master volume so the correct amplification is applied */

	tumbler_set_master_volume(mix);

}

static void tumbler_update_automute(pmac_t *chip, int do_notify)

{

	if (chip->auto_mute) {

		pmac_tumbler_t *mix = chip->mixer_data;

		snd_assert(mix, return);

		if (tumbler_detect_headphone(chip)) {

			/* mute speaker */

			check_mute(chip, &mix->amp_mute, 1, do_notify, chip->speaker_sw_ctl);

			check_mute(chip, &mix->hp_mute, 0, do_notify, chip->master_sw_ctl);

			mix->drc_enable = 0;

		} else {

			/* unmute speaker */

			check_mute(chip, &mix->amp_mute, 0, do_notify, chip->speaker_sw_ctl);

			check_mute(chip, &mix->hp_mute, 1, do_notify, chip->master_sw_ctl);

			mix->drc_enable = 1;

		}

		if (do_notify) {

			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,

				       &chip->hp_detect_ctl->id);

			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,

			               &chip->drc_sw_ctl->id);

		}

		/* finally we need to schedule an update of the mixer values

		   (master and DRC are enough for now) -ReneR */

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)

		schedule_task(&device_change);

#else

		schedule_work(&device_change);

#endif

	}

}

#endif /* PMAC_SUPPORT_AUTOMUTE */

/* interrupt - headphone plug changed */

static irqreturn_t headphone_intr(int irq, void *devid, struct pt_regs *regs)

{

	pmac_t *chip = devid;

	if (chip->update_automute && chip->initialized) {

		chip->update_automute(chip, 1);

		return IRQ_HANDLED;

	}

	return IRQ_NONE;

}

/* look for audio-gpio device */

static struct device_node *find_audio_device(const char *name)

{

	struct device_node *np;

	if (! (np = find_devices("gpio")))

		return NULL;

	for (np = np->child; np; np = np->sibling) {

		char *property = get_property(np, "audio-gpio", NULL);

		if (property && strcmp(property, name) == 0)

			return np;

	}  

	return NULL;

}

/* look for audio-gpio device */

static struct device_node *find_compatible_audio_device(const char *name)

{

	struct device_node *np;

	if (! (np = find_devices("gpio")))

		return NULL;

	for (np = np->child; np; np = np->sibling) {

		if (device_is_compatible(np, name))

			return np;

	}  

	return NULL;

}

/* find an audio device and get its address */

static unsigned long tumbler_find_device(const char *device, pmac_gpio_t *gp, int is_compatible)

{

	struct device_node *node;

	u32 *base;

	if (is_compatible)

		node = find_compatible_audio_device(device);

	else

		node = find_audio_device(device);

	if (! node) {

		snd_printdd("cannot find device %s\n", device);

		return -ENODEV;

	}

	base = (u32 *)get_property(node, "AAPL,address", NULL);

	if (! base) {

		snd_printd("cannot find address for device %s\n", device);

		return -ENODEV;

	}

#ifdef CONFIG_PPC_HAS_FEATURE_CALLS

	gp->addr = (*base) & 0x0000ffff;

#else

	gp->addr = (void*)ioremap((unsigned long)(*base), 1);

#endif

	base = (u32 *)get_property(node, "audio-gpio-active-state", NULL);

	if (base)

		gp->active_state = *base;

	else

		gp->active_state = 1;

	return (node->n_intrs > 0) ? node->intrs[0].line : 0;

}

/* reset audio */

static void tumbler_reset_audio(pmac_t *chip)

{

	pmac_tumbler_t *mix = chip->mixer_data;

	write_audio_gpio(&mix->audio_reset, 0);

	big_mdelay(200);

	write_audio_gpio(&mix->audio_reset, 1);

	big_mdelay(100);

	write_audio_gpio(&mix->audio_reset, 0);

	big_mdelay(100);

}

#ifdef CONFIG_PMAC_PBOOK

/* resume mixer */

static void tumbler_resume(pmac_t *chip)

{

	pmac_tumbler_t *mix = chip->mixer_data;

	snd_assert(mix, return);

	tumbler_reset_audio(chip);

	if (mix->i2c.client && mix->i2c.init_client) {

		if (mix->i2c.init_client(&mix->i2c) < 0)

			printk(KERN_ERR "tumbler_init_client error\n");

	} else

		printk(KERN_ERR "tumbler: i2c is not initialized\n");

	if (chip->model == PMAC_TUMBLER) {

		tumbler_set_mono_volume(mix, &tumbler_pcm_vol_info);

		tumbler_set_mono_volume(mix, &tumbler_bass_vol_info);

		tumbler_set_mono_volume(mix, &tumbler_treble_vol_info);

		tumbler_set_drc(mix);

	} else {

		snapper_set_mix_vol(mix, VOL_IDX_PCM);

		snapper_set_mix_vol(mix, VOL_IDX_PCM2);

		snapper_set_mix_vol(mix, VOL_IDX_ADC);

		tumbler_set_mono_volume(mix, &snapper_bass_vol_info);

		tumbler_set_mono_volume(mix, &snapper_treble_vol_info);

		snapper_set_drc(mix);

		snapper_set_capture_source(mix);

	}

	tumbler_set_master_volume(mix);

	if (chip->update_automute)

		chip->update_automute(chip, 0);

}

#endif

/* initialize tumbler */

static int __init tumbler_init(pmac_t *chip)

{

	int irq, err;

	pmac_tumbler_t *mix = chip->mixer_data;

	snd_assert(mix, return -EINVAL);

	tumbler_find_device("audio-hw-reset", &mix->audio_reset, 0);

	tumbler_find_device("amp-mute", &mix->amp_mute, 0);

	tumbler_find_device("headphone-mute", &mix->hp_mute, 0);

	irq = tumbler_find_device("headphone-detect", &mix->hp_detect, 0);

	if (irq < 0)

		irq = tumbler_find_device("keywest-gpio15", &mix->hp_detect, 1);

	tumbler_reset_audio(chip);

	/* activate headphone status interrupts */

  	if (irq >= 0) {

		unsigned char val;

		if ((err = request_irq(irq, headphone_intr, 0,

				       "Tumbler Headphone Detection", chip)) < 0)

			return err;

		/* activate headphone status interrupts */

		val = do_gpio_read(&mix->hp_detect);

		do_gpio_write(&mix->hp_detect, val | 0x80);

	}

	mix->headphone_irq = irq;

	return 0;

}

static void tumbler_cleanup(pmac_t *chip)

{

	pmac_tumbler_t *mix = chip->mixer_data;

	if (! mix)

		return;

	if (mix->headphone_irq >= 0)

		free_irq(mix->headphone_irq, chip);

	tumbler_gpio_free(&mix->audio_reset);

	tumbler_gpio_free(&mix->amp_mute);

	tumbler_gpio_free(&mix->hp_mute);

	tumbler_gpio_free(&mix->hp_detect);

	snd_pmac_keywest_cleanup(&mix->i2c);

	kfree(mix);

	chip->mixer_data = NULL;

}

/* exported */

int __init snd_pmac_tumbler_init(pmac_t *chip)

{

	int i, err;

	pmac_tumbler_t *mix;

	u32 *paddr;

	struct device_node *tas_node;

	char *chipname;

#ifdef CONFIG_KMOD

	if (current->fs->root)

		request_module("i2c-keywest");

#endif /* CONFIG_KMOD */	

	mix = kmalloc(sizeof(*mix), GFP_KERNEL);

	if (! mix)

		return -ENOMEM;

	memset(mix, 0, sizeof(*mix));

	mix->headphone_irq = -1;

	chip->mixer_data = mix;

	chip->mixer_free = tumbler_cleanup;

	if ((err = tumbler_init(chip)) < 0)

		return err;

	/* set up TAS */

	tas_node = find_devices("deq");

	if (tas_node == NULL)

		return -ENODEV;

	paddr = (u32 *)get_property(tas_node, "i2c-address", NULL);

	if (paddr)

		mix->i2c.addr = (*paddr) >> 1;

	else

		mix->i2c.addr = TAS_I2C_ADDR;

	if (chip->model == PMAC_TUMBLER) {

		mix->i2c.init_client = tumbler_init_client;

		mix->i2c.name = "TAS3001c";

		chipname = "Tumbler";

	} else {

		mix->i2c.init_client = snapper_init_client;

		mix->i2c.name = "TAS3004";

		chipname = "Snapper";

	}

	if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)

		return err;

	/*

	 * build mixers

	 */

	sprintf(chip->card->mixername, "PowerMac %s", chipname);

	if (chip->model == PMAC_TUMBLER) {

		for (i = 0; i < ARRAY_SIZE(tumbler_mixers); i++) {

			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&tumbler_mixers[i], chip))) < 0)

				return err;

		}

	} else {

		for (i = 0; i < ARRAY_SIZE(snapper_mixers); i++) {

			if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snapper_mixers[i], chip))) < 0)

				return err;

		}

	}

	chip->master_sw_ctl = snd_ctl_new1(&tumbler_hp_sw, chip);

	if ((err = snd_ctl_add(chip->card, chip->master_sw_ctl)) < 0)

		return err;

	chip->speaker_sw_ctl = snd_ctl_new1(&tumbler_speaker_sw, chip);

	if ((err = snd_ctl_add(chip->card, chip->speaker_sw_ctl)) < 0)

		return err;

	chip->drc_sw_ctl = snd_ctl_new1(&tumbler_drc_sw, chip);

	if ((err = snd_ctl_add(chip->card, chip->drc_sw_ctl)) < 0)

		return err;

#ifdef CONFIG_PMAC_PBOOK

	chip->resume = tumbler_resume;

#endif

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)

	INIT_TQUEUE(&device_change, device_change_handler, (void *)chip);

#else

	INIT_WORK(&device_change, device_change_handler, (void *)chip);

#endif

#ifdef PMAC_SUPPORT_AUTOMUTE

	if (mix->headphone_irq >=0 && (err = snd_pmac_add_automute(chip)) < 0)

		return err;

	chip->detect_headphone = tumbler_detect_headphone;

	chip->update_automute = tumbler_update_automute;

	tumbler_update_automute(chip, 0); /* update the status only */

#endif

	return 0;

}

		err = build_mixers(chip, num_controls(snd_pmac_screamer_mixers2),

		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_screamer_mixers2),

		err = build_mixers(chip, num_controls(snd_pmac_awacs_mixers2),

		err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers2),

	depends on SND && I2C

	depends on SND && I2C && INPUT

		if (do_notify)

		if (do_notify) {