sound/pci/ice1712/wtm.c - kernel/bruno - Git at Google

 /*
  *	ALSA driver for ICEnsemble VT1724 (Envy24HT)
  *
  *	Lowlevel functions for Ego Sys Waveterminal 192M
  *
  *		Copyright (c) 2006 Guedez Clement <klem.dev@gmail.com>
  *		Some functions are taken from the Prodigy192 driver
  *		source
  *
  *	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/interrupt.h>
 #include <linux/init.h>
 #include <sound/core.h>
 #include <sound/tlv.h>
 #include <linux/slab.h>

 #include "ice1712.h"
 #include "envy24ht.h"
 #include "wtm.h"
 #include "stac946x.h"

 struct wtm_spec {
 	/* rate change needs atomic mute/unmute of all dacs*/
 	struct mutex mute_mutex;
 };


 /*
  *	2*ADC 6*DAC no1 ringbuffer r/w on i2c bus
  */
 static inline void stac9460_put(struct snd_ice1712 *ice, int reg,
 						unsigned char val)
 {
 	snd_vt1724_write_i2c(ice, STAC9460_I2C_ADDR, reg, val);
 }

 static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
 {
 	return snd_vt1724_read_i2c(ice, STAC9460_I2C_ADDR, reg);
 }

 /*
  *	2*ADC 2*DAC no2 ringbuffer r/w on i2c bus
  */
 static inline void stac9460_2_put(struct snd_ice1712 *ice, int reg,
 						unsigned char val)
 {
 	snd_vt1724_write_i2c(ice, STAC9460_2_I2C_ADDR, reg, val);
 }

 static inline unsigned char stac9460_2_get(struct snd_ice1712 *ice, int reg)
 {
 	return snd_vt1724_read_i2c(ice, STAC9460_2_I2C_ADDR, reg);
 }


 /*
  *	DAC mute control
  */
 static void stac9460_dac_mute_all(struct snd_ice1712 *ice, unsigned char mute,
 				unsigned short int *change_mask)
 {
 	unsigned char new, old;
 	int id, idx, change;

 	/*stac9460 1*/
 	for (id = 0; id < 7; id++) {
 		if (*change_mask & (0x01 << id)) {
 			if (id == 0)
 				idx = STAC946X_MASTER_VOLUME;
 			else
 				idx = STAC946X_LF_VOLUME - 1 + id;
 			old = stac9460_get(ice, idx);
 			new = (~mute << 7 & 0x80) | (old & ~0x80);
 			change = (new != old);
 			if (change) {
 				stac9460_put(ice, idx, new);
 				*change_mask = *change_mask | (0x01 << id);
 			} else {
 				*change_mask = *change_mask & ~(0x01 << id);
 			}
 		}
 	}

 	/*stac9460 2*/
 	for (id = 0; id < 3; id++) {
 		if (*change_mask & (0x01 << (id + 7))) {
 			if (id == 0)
 				idx = STAC946X_MASTER_VOLUME;
 			else
 				idx = STAC946X_LF_VOLUME - 1 + id;
 			old = stac9460_2_get(ice, idx);
 			new = (~mute << 7 & 0x80) | (old & ~0x80);
 			change = (new != old);
 			if (change) {
 				stac9460_2_put(ice, idx, new);
 				*change_mask = *change_mask | (0x01 << id);
 			} else {
 				*change_mask = *change_mask & ~(0x01 << id);
 			}
 		}
 	}
 }


 #define stac9460_dac_mute_info		snd_ctl_boolean_mono_info

 static int stac9460_dac_mute_get(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	struct wtm_spec *spec = ice->spec;
 	unsigned char val;
 	int idx, id;

 	mutex_lock(&spec->mute_mutex);

 	if (kcontrol->private_value) {
 		idx = STAC946X_MASTER_VOLUME;
 		id = 0;
 	} else {
 		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 		idx = id + STAC946X_LF_VOLUME;
 	}
 	if (id < 6)
 		val = stac9460_get(ice, idx);
 	else
 		val = stac9460_2_get(ice, idx - 6);
 	ucontrol->value.integer.value[0] = (~val >> 7) & 0x1;

 	mutex_unlock(&spec->mute_mutex);
 	return 0;
 }

 static int stac9460_dac_mute_put(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	unsigned char new, old;
 	int id, idx;
 	int change;

 	if (kcontrol->private_value) {
 		idx = STAC946X_MASTER_VOLUME;
 		old = stac9460_get(ice, idx);
 		new = (~ucontrol->value.integer.value[0] << 7 & 0x80) |
 							(old & ~0x80);
 		change = (new != old);
 		if (change) {
 			stac9460_put(ice, idx, new);
 			stac9460_2_put(ice, idx, new);
 		}
 	} else {
 		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 		idx = id + STAC946X_LF_VOLUME;
 		if (id < 6)
 			old = stac9460_get(ice, idx);
 		else
 			old = stac9460_2_get(ice, idx - 6);
 		new = (~ucontrol->value.integer.value[0] << 7 & 0x80) |
 							(old & ~0x80);
 		change = (new != old);
 		if (change) {
 			if (id < 6)
 				stac9460_put(ice, idx, new);
 			else
 				stac9460_2_put(ice, idx - 6, new);
 		}
 	}
 	return change;
 }

 /*
  * 	DAC volume attenuation mixer control
  */
 static int stac9460_dac_vol_info(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_info *uinfo)
 {
 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 	uinfo->count = 1;
 	uinfo->value.integer.min = 0;			/* mute */
 	uinfo->value.integer.max = 0x7f;		/* 0dB */
 	return 0;
 }

 static int stac9460_dac_vol_get(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	int idx, id;
 	unsigned char vol;

 	if (kcontrol->private_value) {
 		idx = STAC946X_MASTER_VOLUME;
 		id = 0;
 	} else {
 		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 		idx = id + STAC946X_LF_VOLUME;
 	}
 	if (id < 6)
 		vol = stac9460_get(ice, idx) & 0x7f;
 	else
 		vol = stac9460_2_get(ice, idx - 6) & 0x7f;
 	ucontrol->value.integer.value[0] = 0x7f - vol;
 	return 0;
 }

 static int stac9460_dac_vol_put(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	int idx, id;
 	unsigned char tmp, ovol, nvol;
 	int change;

 	if (kcontrol->private_value) {
 		idx = STAC946X_MASTER_VOLUME;
 		nvol = ucontrol->value.integer.value[0] & 0x7f;
 		tmp = stac9460_get(ice, idx);
 		ovol = 0x7f - (tmp & 0x7f);
 		change = (ovol != nvol);
 		if (change) {
 			stac9460_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
 			stac9460_2_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
 		}
 	} else {
 		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 		idx = id + STAC946X_LF_VOLUME;
 		nvol = ucontrol->value.integer.value[0] & 0x7f;
 		if (id < 6)
 			tmp = stac9460_get(ice, idx);
 		else
 			tmp = stac9460_2_get(ice, idx - 6);
 		ovol = 0x7f - (tmp & 0x7f);
 		change = (ovol != nvol);
 		if (change) {
 			if (id < 6)
 				stac9460_put(ice, idx, (0x7f - nvol) |
 							(tmp & 0x80));
 			else
 				stac9460_2_put(ice, idx-6, (0x7f - nvol) |
 							(tmp & 0x80));
 		}
 	}
 	return change;
 }

 /*
  * ADC mute control
  */
 #define stac9460_adc_mute_info		snd_ctl_boolean_stereo_info

 static int stac9460_adc_mute_get(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	unsigned char val;
 	int i, id;

 	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 	if (id == 0) {
 		for (i = 0; i < 2; ++i) {
 			val = stac9460_get(ice, STAC946X_MIC_L_VOLUME + i);
 			ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
 		}
 	} else {
 		for (i = 0; i < 2; ++i) {
 			val = stac9460_2_get(ice, STAC946X_MIC_L_VOLUME + i);
 			ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
 		}
 	}
 	return 0;
 }

 static int stac9460_adc_mute_put(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	unsigned char new, old;
 	int i, reg, id;
 	int change;

 	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 	if (id == 0) {
 		for (i = 0; i < 2; ++i) {
 			reg = STAC946X_MIC_L_VOLUME + i;
 			old = stac9460_get(ice, reg);
 			new = (~ucontrol->value.integer.value[i]<<7&0x80) |
 								(old&~0x80);
 			change = (new != old);
 			if (change)
 				stac9460_put(ice, reg, new);
 		}
 	} else {
 		for (i = 0; i < 2; ++i) {
 			reg = STAC946X_MIC_L_VOLUME + i;
 			old = stac9460_2_get(ice, reg);
 			new = (~ucontrol->value.integer.value[i]<<7&0x80) |
 								(old&~0x80);
 			change = (new != old);
 			if (change)
 				stac9460_2_put(ice, reg, new);
 		}
 	}
 	return change;
 }

 /*
  *ADC gain mixer control
  */
 static int stac9460_adc_vol_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;		/* 0dB */
 	uinfo->value.integer.max = 0x0f;	/* 22.5dB */
 	return 0;
 }

 static int stac9460_adc_vol_get(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	int i, reg, id;
 	unsigned char vol;

 	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 	if (id == 0) {
 		for (i = 0; i < 2; ++i) {
 			reg = STAC946X_MIC_L_VOLUME + i;
 			vol = stac9460_get(ice, reg) & 0x0f;
 			ucontrol->value.integer.value[i] = 0x0f - vol;
 		}
 	} else {
 		for (i = 0; i < 2; ++i) {
 			reg = STAC946X_MIC_L_VOLUME + i;
 			vol = stac9460_2_get(ice, reg) & 0x0f;
 			ucontrol->value.integer.value[i] = 0x0f - vol;
 		}
 	}
 	return 0;
 }

 static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	int i, reg, id;
 	unsigned char ovol, nvol;
 	int change;

 	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 	if (id == 0) {
 		for (i = 0; i < 2; ++i) {
 			reg = STAC946X_MIC_L_VOLUME + i;
 			nvol = ucontrol->value.integer.value[i] & 0x0f;
 			ovol = 0x0f - stac9460_get(ice, reg);
 			change = ((ovol & 0x0f) != nvol);
 			if (change)
 				stac9460_put(ice, reg, (0x0f - nvol) |
 							(ovol & ~0x0f));
 		}
 	} else {
 		for (i = 0; i < 2; ++i) {
 			reg = STAC946X_MIC_L_VOLUME + i;
 			nvol = ucontrol->value.integer.value[i] & 0x0f;
 			ovol = 0x0f - stac9460_2_get(ice, reg);
 			change = ((ovol & 0x0f) != nvol);
 			if (change)
 				stac9460_2_put(ice, reg, (0x0f - nvol) |
 							(ovol & ~0x0f));
 		}
 	}
 	return change;
 }

 /*
  * MIC / LINE switch fonction
  */
 static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_info *uinfo)
 {
 	static const char * const texts[2] = { "Line In", "Mic" };

 	return snd_ctl_enum_info(uinfo, 1, 2, texts);
 }


 static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	unsigned char val;
 	int id;

 	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 	if (id == 0)
 		val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
 	else
 		val = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
 	ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
 	return 0;
 }

 static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
 	unsigned char new, old;
 	int change, id;

 	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
 	if (id == 0)
 		old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
 	else
 		old = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
 	new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) | (old & ~0x80);
 	change = (new != old);
 	if (change) {
 		if (id == 0)
 			stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
 		else
 			stac9460_2_put(ice, STAC946X_GENERAL_PURPOSE, new);
 	}
 	return change;
 }


 /*
  * Handler for setting correct codec rate - called when rate change is detected
  */
 static void stac9460_set_rate_val(struct snd_ice1712 *ice, unsigned int rate)
 {
 	unsigned char old, new;
 	unsigned short int changed;
 	struct wtm_spec *spec = ice->spec;

 	if (rate == 0)  /* no hint - S/PDIF input is master, simply return */
 		return;
 	else if (rate <= 48000)
 		new = 0x08;     /* 256x, base rate mode */
 	else if (rate <= 96000)
 		new = 0x11;     /* 256x, mid rate mode */
 	else
 		new = 0x12;     /* 128x, high rate mode */

 	old = stac9460_get(ice, STAC946X_MASTER_CLOCKING);
 	if (old == new)
 		return;
 	/* change detected, setting master clock, muting first */
 	/* due to possible conflicts with mute controls - mutexing */
 	mutex_lock(&spec->mute_mutex);
 	/* we have to remember current mute status for each DAC */
 	changed = 0xFFFF;
 	stac9460_dac_mute_all(ice, 0, &changed);
 	/*printk(KERN_DEBUG "Rate change: %d, new MC: 0x%02x\n", rate, new);*/
 	stac9460_put(ice, STAC946X_MASTER_CLOCKING, new);
 	stac9460_2_put(ice, STAC946X_MASTER_CLOCKING, new);
 	udelay(10);
 	/* unmuting - only originally unmuted dacs -
 	* i.e. those changed when muting */
 	stac9460_dac_mute_all(ice, 1, &changed);
 	mutex_unlock(&spec->mute_mutex);
 }


 /*Limits value in dB for fader*/
 static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
 static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);

 /*
  * Control tabs
  */
 static struct snd_kcontrol_new stac9640_controls[] = {
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
 			    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
 		.name = "Master Playback Switch",
 		.info = stac9460_dac_mute_info,
 		.get = stac9460_dac_mute_get,
 		.put = stac9460_dac_mute_put,
 		.private_value = 1,
 		.tlv = { .p = db_scale_dac }
 	},
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.name = "Master Playback Volume",
 		.info = stac9460_dac_vol_info,
 		.get = stac9460_dac_vol_get,
 		.put = stac9460_dac_vol_put,
 		.private_value = 1,
 	},
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.name = "MIC/Line Input Enum",
 		.count = 2,
 		.info = stac9460_mic_sw_info,
 		.get = stac9460_mic_sw_get,
 		.put = stac9460_mic_sw_put,

 	},
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.name = "DAC Switch",
 		.count = 8,
 		.info = stac9460_dac_mute_info,
 		.get = stac9460_dac_mute_get,
 		.put = stac9460_dac_mute_put,
 	},
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
 			    SNDRV_CTL_ELEM_ACCESS_TLV_READ),

 		.name = "DAC Volume",
 		.count = 8,
 		.info = stac9460_dac_vol_info,
 		.get = stac9460_dac_vol_get,
 		.put = stac9460_dac_vol_put,
 		.tlv = { .p = db_scale_dac }
 	},
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.name = "ADC Switch",
 		.count = 2,
 		.info = stac9460_adc_mute_info,
 		.get = stac9460_adc_mute_get,
 		.put = stac9460_adc_mute_put,
 	},
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
 			    SNDRV_CTL_ELEM_ACCESS_TLV_READ),

 		.name = "ADC Volume",
 		.count = 2,
 		.info = stac9460_adc_vol_info,
 		.get = stac9460_adc_vol_get,
 		.put = stac9460_adc_vol_put,
 		.tlv = { .p = db_scale_adc }
 	}
 };


 /*INIT*/
 static int wtm_add_controls(struct snd_ice1712 *ice)
 {
 	unsigned int i;
 	int err;

 	for (i = 0; i < ARRAY_SIZE(stac9640_controls); i++) {
 		err = snd_ctl_add(ice->card,
 				snd_ctl_new1(&stac9640_controls[i], ice));
 		if (err < 0)
 			return err;
 	}
 	return 0;
 }

 static int wtm_init(struct snd_ice1712 *ice)
 {
 	static unsigned short stac_inits_wtm[] = {
 		STAC946X_RESET, 0,
 		STAC946X_MASTER_CLOCKING, 0x11,
 		(unsigned short)-1
 	};
 	unsigned short *p;
 	struct wtm_spec *spec;

 	/*WTM 192M*/
 	ice->num_total_dacs = 8;
 	ice->num_total_adcs = 4;
 	ice->force_rdma1 = 1;

 	/*init mutex for dac mute conflict*/
 	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 	if (!spec)
 		return -ENOMEM;
 	ice->spec = spec;
 	mutex_init(&spec->mute_mutex);


 	/*initialize codec*/
 	p = stac_inits_wtm;
 	for (; *p != (unsigned short)-1; p += 2) {
 		stac9460_put(ice, p[0], p[1]);
 		stac9460_2_put(ice, p[0], p[1]);
 	}
 	ice->gpio.set_pro_rate = stac9460_set_rate_val;
 	return 0;
 }


 static unsigned char wtm_eeprom[] = {
 	[ICE_EEP2_SYSCONF]      = 0x67, /*SYSCONF: clock 192KHz, mpu401,
 							4ADC, 8DAC */
 	[ICE_EEP2_ACLINK]       = 0x80, /* ACLINK : I2S */
 	[ICE_EEP2_I2S]          = 0xf8, /* I2S: vol; 96k, 24bit, 192k */
 	[ICE_EEP2_SPDIF]        = 0xc1, /*SPDIF: out-en, spidf ext out*/
 	[ICE_EEP2_GPIO_DIR]     = 0x9f,
 	[ICE_EEP2_GPIO_DIR1]    = 0xff,
 	[ICE_EEP2_GPIO_DIR2]    = 0x7f,
 	[ICE_EEP2_GPIO_MASK]    = 0x9f,
 	[ICE_EEP2_GPIO_MASK1]   = 0xff,
 	[ICE_EEP2_GPIO_MASK2]   = 0x7f,
 	[ICE_EEP2_GPIO_STATE]   = 0x16,
 	[ICE_EEP2_GPIO_STATE1]  = 0x80,
 	[ICE_EEP2_GPIO_STATE2]  = 0x00,
 };


 /*entry point*/
 struct snd_ice1712_card_info snd_vt1724_wtm_cards[] = {
 	{
 		.subvendor = VT1724_SUBDEVICE_WTM,
 		.name = "ESI Waveterminal 192M",
 		.model = "WT192M",
 		.chip_init = wtm_init,
 		.build_controls = wtm_add_controls,
 		.eeprom_size = sizeof(wtm_eeprom),
 		.eeprom_data = wtm_eeprom,
 	},
 	{} /*terminator*/
 };
	/*
	* ALSA driver for ICEnsemble VT1724 (Envy24HT)
	*
	* Lowlevel functions for Ego Sys Waveterminal 192M
	*
	* Copyright (c) 2006 Guedez Clement <klem.dev@gmail.com>
	* Some functions are taken from the Prodigy192 driver
	* source
	*
	* 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/interrupt.h>
	#include <linux/init.h>
	#include <sound/core.h>
	#include <sound/tlv.h>
	#include <linux/slab.h>

	#include "ice1712.h"
	#include "envy24ht.h"
	#include "wtm.h"
	#include "stac946x.h"

	struct wtm_spec {
	/* rate change needs atomic mute/unmute of all dacs*/
	struct mutex mute_mutex;
	};


	/*
	* 2ADC 6DAC no1 ringbuffer r/w on i2c bus
	*/
	static inline void stac9460_put(struct snd_ice1712 *ice, int reg,
	unsigned char val)
	{
	snd_vt1724_write_i2c(ice, STAC9460_I2C_ADDR, reg, val);
	}

	static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
	{
	return snd_vt1724_read_i2c(ice, STAC9460_I2C_ADDR, reg);
	}

	/*
	* 2ADC 2DAC no2 ringbuffer r/w on i2c bus
	*/
	static inline void stac9460_2_put(struct snd_ice1712 *ice, int reg,
	unsigned char val)
	{
	snd_vt1724_write_i2c(ice, STAC9460_2_I2C_ADDR, reg, val);
	}

	static inline unsigned char stac9460_2_get(struct snd_ice1712 *ice, int reg)
	{
	return snd_vt1724_read_i2c(ice, STAC9460_2_I2C_ADDR, reg);
	}


	/*
	* DAC mute control
	*/
	static void stac9460_dac_mute_all(struct snd_ice1712 *ice, unsigned char mute,
	unsigned short int *change_mask)
	{
	unsigned char new, old;
	int id, idx, change;

	/stac9460 1/
	for (id = 0; id < 7; id++) {
	if (*change_mask & (0x01 << id)) {
	if (id == 0)
	idx = STAC946X_MASTER_VOLUME;
	else
	idx = STAC946X_LF_VOLUME - 1 + id;
	old = stac9460_get(ice, idx);
	new = (~mute << 7 & 0x80) \| (old & ~0x80);
	change = (new != old);
	if (change) {
	stac9460_put(ice, idx, new);
	change_mask = change_mask \| (0x01 << id);
	} else {
	change_mask = change_mask & ~(0x01 << id);
	}
	}
	}

	/stac9460 2/
	for (id = 0; id < 3; id++) {
	if (*change_mask & (0x01 << (id + 7))) {
	if (id == 0)
	idx = STAC946X_MASTER_VOLUME;
	else
	idx = STAC946X_LF_VOLUME - 1 + id;
	old = stac9460_2_get(ice, idx);
	new = (~mute << 7 & 0x80) \| (old & ~0x80);
	change = (new != old);
	if (change) {
	stac9460_2_put(ice, idx, new);
	change_mask = change_mask \| (0x01 << id);
	} else {
	change_mask = change_mask & ~(0x01 << id);
	}
	}
	}
	}



	#define stac9460_dac_mute_info snd_ctl_boolean_mono_info

	static int stac9460_dac_mute_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	struct wtm_spec *spec = ice->spec;
	unsigned char val;
	int idx, id;

	mutex_lock(&spec->mute_mutex);

	if (kcontrol->private_value) {
	idx = STAC946X_MASTER_VOLUME;
	id = 0;
	} else {
	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	idx = id + STAC946X_LF_VOLUME;
	}
	if (id < 6)
	val = stac9460_get(ice, idx);
	else
	val = stac9460_2_get(ice, idx - 6);
	ucontrol->value.integer.value[0] = (~val >> 7) & 0x1;

	mutex_unlock(&spec->mute_mutex);
	return 0;
	}

	static int stac9460_dac_mute_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char new, old;
	int id, idx;
	int change;

	if (kcontrol->private_value) {
	idx = STAC946X_MASTER_VOLUME;
	old = stac9460_get(ice, idx);
	new = (~ucontrol->value.integer.value[0] << 7 & 0x80) \|
	(old & ~0x80);
	change = (new != old);
	if (change) {
	stac9460_put(ice, idx, new);
	stac9460_2_put(ice, idx, new);
	}
	} else {
	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	idx = id + STAC946X_LF_VOLUME;
	if (id < 6)
	old = stac9460_get(ice, idx);
	else
	old = stac9460_2_get(ice, idx - 6);
	new = (~ucontrol->value.integer.value[0] << 7 & 0x80) \|
	(old & ~0x80);
	change = (new != old);
	if (change) {
	if (id < 6)
	stac9460_put(ice, idx, new);
	else
	stac9460_2_put(ice, idx - 6, new);
	}
	}
	return change;
	}

	/*
	* DAC volume attenuation mixer control
	*/
	static int stac9460_dac_vol_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
	{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0; /* mute */
	uinfo->value.integer.max = 0x7f; /* 0dB */
	return 0;
	}

	static int stac9460_dac_vol_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int idx, id;
	unsigned char vol;

	if (kcontrol->private_value) {
	idx = STAC946X_MASTER_VOLUME;
	id = 0;
	} else {
	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	idx = id + STAC946X_LF_VOLUME;
	}
	if (id < 6)
	vol = stac9460_get(ice, idx) & 0x7f;
	else
	vol = stac9460_2_get(ice, idx - 6) & 0x7f;
	ucontrol->value.integer.value[0] = 0x7f - vol;
	return 0;
	}

	static int stac9460_dac_vol_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int idx, id;
	unsigned char tmp, ovol, nvol;
	int change;

	if (kcontrol->private_value) {
	idx = STAC946X_MASTER_VOLUME;
	nvol = ucontrol->value.integer.value[0] & 0x7f;
	tmp = stac9460_get(ice, idx);
	ovol = 0x7f - (tmp & 0x7f);
	change = (ovol != nvol);
	if (change) {
	stac9460_put(ice, idx, (0x7f - nvol) \| (tmp & 0x80));
	stac9460_2_put(ice, idx, (0x7f - nvol) \| (tmp & 0x80));
	}
	} else {
	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	idx = id + STAC946X_LF_VOLUME;
	nvol = ucontrol->value.integer.value[0] & 0x7f;
	if (id < 6)
	tmp = stac9460_get(ice, idx);
	else
	tmp = stac9460_2_get(ice, idx - 6);
	ovol = 0x7f - (tmp & 0x7f);
	change = (ovol != nvol);
	if (change) {
	if (id < 6)
	stac9460_put(ice, idx, (0x7f - nvol) \|
	(tmp & 0x80));
	else
	stac9460_2_put(ice, idx-6, (0x7f - nvol) \|
	(tmp & 0x80));
	}
	}
	return change;
	}

	/*
	* ADC mute control
	*/
	#define stac9460_adc_mute_info snd_ctl_boolean_stereo_info

	static int stac9460_adc_mute_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char val;
	int i, id;

	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	if (id == 0) {
	for (i = 0; i < 2; ++i) {
	val = stac9460_get(ice, STAC946X_MIC_L_VOLUME + i);
	ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
	}
	} else {
	for (i = 0; i < 2; ++i) {
	val = stac9460_2_get(ice, STAC946X_MIC_L_VOLUME + i);
	ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
	}
	}
	return 0;
	}

	static int stac9460_adc_mute_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char new, old;
	int i, reg, id;
	int change;

	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	if (id == 0) {
	for (i = 0; i < 2; ++i) {
	reg = STAC946X_MIC_L_VOLUME + i;
	old = stac9460_get(ice, reg);
	new = (~ucontrol->value.integer.value[i]<<7&0x80) \|
	(old&~0x80);
	change = (new != old);
	if (change)
	stac9460_put(ice, reg, new);
	}
	} else {
	for (i = 0; i < 2; ++i) {
	reg = STAC946X_MIC_L_VOLUME + i;
	old = stac9460_2_get(ice, reg);
	new = (~ucontrol->value.integer.value[i]<<7&0x80) \|
	(old&~0x80);
	change = (new != old);
	if (change)
	stac9460_2_put(ice, reg, new);
	}
	}
	return change;
	}

	/*
	*ADC gain mixer control
	*/
	static int stac9460_adc_vol_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; /* 0dB */
	uinfo->value.integer.max = 0x0f; /* 22.5dB */
	return 0;
	}

	static int stac9460_adc_vol_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int i, reg, id;
	unsigned char vol;

	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	if (id == 0) {
	for (i = 0; i < 2; ++i) {
	reg = STAC946X_MIC_L_VOLUME + i;
	vol = stac9460_get(ice, reg) & 0x0f;
	ucontrol->value.integer.value[i] = 0x0f - vol;
	}
	} else {
	for (i = 0; i < 2; ++i) {
	reg = STAC946X_MIC_L_VOLUME + i;
	vol = stac9460_2_get(ice, reg) & 0x0f;
	ucontrol->value.integer.value[i] = 0x0f - vol;
	}
	}
	return 0;
	}

	static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int i, reg, id;
	unsigned char ovol, nvol;
	int change;

	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	if (id == 0) {
	for (i = 0; i < 2; ++i) {
	reg = STAC946X_MIC_L_VOLUME + i;
	nvol = ucontrol->value.integer.value[i] & 0x0f;
	ovol = 0x0f - stac9460_get(ice, reg);
	change = ((ovol & 0x0f) != nvol);
	if (change)
	stac9460_put(ice, reg, (0x0f - nvol) \|
	(ovol & ~0x0f));
	}
	} else {
	for (i = 0; i < 2; ++i) {
	reg = STAC946X_MIC_L_VOLUME + i;
	nvol = ucontrol->value.integer.value[i] & 0x0f;
	ovol = 0x0f - stac9460_2_get(ice, reg);
	change = ((ovol & 0x0f) != nvol);
	if (change)
	stac9460_2_put(ice, reg, (0x0f - nvol) \|
	(ovol & ~0x0f));
	}
	}
	return change;
	}

	/*
	* MIC / LINE switch fonction
	*/
	static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo)
	{
	static const char * const texts[2] = { "Line In", "Mic" };

	return snd_ctl_enum_info(uinfo, 1, 2, texts);
	}


	static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char val;
	int id;

	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	if (id == 0)
	val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
	else
	val = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
	ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
	return 0;
	}

	static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char new, old;
	int change, id;

	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	if (id == 0)
	old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
	else
	old = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
	new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) \| (old & ~0x80);
	change = (new != old);
	if (change) {
	if (id == 0)
	stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
	else
	stac9460_2_put(ice, STAC946X_GENERAL_PURPOSE, new);
	}
	return change;
	}


	/*
	* Handler for setting correct codec rate - called when rate change is detected
	*/
	static void stac9460_set_rate_val(struct snd_ice1712 *ice, unsigned int rate)
	{
	unsigned char old, new;
	unsigned short int changed;
	struct wtm_spec *spec = ice->spec;

	if (rate == 0) /* no hint - S/PDIF input is master, simply return */
	return;
	else if (rate <= 48000)
	new = 0x08; /* 256x, base rate mode */
	else if (rate <= 96000)
	new = 0x11; /* 256x, mid rate mode */
	else
	new = 0x12; /* 128x, high rate mode */

	old = stac9460_get(ice, STAC946X_MASTER_CLOCKING);
	if (old == new)
	return;
	/* change detected, setting master clock, muting first */
	/* due to possible conflicts with mute controls - mutexing */
	mutex_lock(&spec->mute_mutex);
	/* we have to remember current mute status for each DAC */
	changed = 0xFFFF;
	stac9460_dac_mute_all(ice, 0, &changed);
	/printk(KERN_DEBUG "Rate change: %d, new MC: 0x%02x\n", rate, new);/
	stac9460_put(ice, STAC946X_MASTER_CLOCKING, new);
	stac9460_2_put(ice, STAC946X_MASTER_CLOCKING, new);
	udelay(10);
	/* unmuting - only originally unmuted dacs -
	* i.e. those changed when muting */
	stac9460_dac_mute_all(ice, 1, &changed);
	mutex_unlock(&spec->mute_mutex);
	}


	/Limits value in dB for fader/
	static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
	static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);

	/*
	* Control tabs
	*/
	static struct snd_kcontrol_new stac9640_controls[] = {
	{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE \|
	SNDRV_CTL_ELEM_ACCESS_TLV_READ),
	.name = "Master Playback Switch",
	.info = stac9460_dac_mute_info,
	.get = stac9460_dac_mute_get,
	.put = stac9460_dac_mute_put,
	.private_value = 1,
	.tlv = { .p = db_scale_dac }
	},
	{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Master Playback Volume",
	.info = stac9460_dac_vol_info,
	.get = stac9460_dac_vol_get,
	.put = stac9460_dac_vol_put,
	.private_value = 1,
	},
	{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "MIC/Line Input Enum",
	.count = 2,
	.info = stac9460_mic_sw_info,
	.get = stac9460_mic_sw_get,
	.put = stac9460_mic_sw_put,

	},
	{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "DAC Switch",
	.count = 8,
	.info = stac9460_dac_mute_info,
	.get = stac9460_dac_mute_get,
	.put = stac9460_dac_mute_put,
	},
	{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE \|
	SNDRV_CTL_ELEM_ACCESS_TLV_READ),

	.name = "DAC Volume",
	.count = 8,
	.info = stac9460_dac_vol_info,
	.get = stac9460_dac_vol_get,
	.put = stac9460_dac_vol_put,
	.tlv = { .p = db_scale_dac }
	},
	{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "ADC Switch",
	.count = 2,
	.info = stac9460_adc_mute_info,
	.get = stac9460_adc_mute_get,
	.put = stac9460_adc_mute_put,
	},
	{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE \|
	SNDRV_CTL_ELEM_ACCESS_TLV_READ),

	.name = "ADC Volume",
	.count = 2,
	.info = stac9460_adc_vol_info,
	.get = stac9460_adc_vol_get,
	.put = stac9460_adc_vol_put,
	.tlv = { .p = db_scale_adc }
	}
	};



	/INIT/
	static int wtm_add_controls(struct snd_ice1712 *ice)
	{
	unsigned int i;
	int err;

	for (i = 0; i < ARRAY_SIZE(stac9640_controls); i++) {
	err = snd_ctl_add(ice->card,
	snd_ctl_new1(&stac9640_controls[i], ice));
	if (err < 0)
	return err;
	}
	return 0;
	}

	static int wtm_init(struct snd_ice1712 *ice)
	{
	static unsigned short stac_inits_wtm[] = {
	STAC946X_RESET, 0,
	STAC946X_MASTER_CLOCKING, 0x11,
	(unsigned short)-1
	};
	unsigned short *p;
	struct wtm_spec *spec;

	/WTM 192M/
	ice->num_total_dacs = 8;
	ice->num_total_adcs = 4;
	ice->force_rdma1 = 1;

	/init mutex for dac mute conflict/
	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
	if (!spec)
	return -ENOMEM;
	ice->spec = spec;
	mutex_init(&spec->mute_mutex);


	/initialize codec/
	p = stac_inits_wtm;
	for (; *p != (unsigned short)-1; p += 2) {
	stac9460_put(ice, p[0], p[1]);
	stac9460_2_put(ice, p[0], p[1]);
	}
	ice->gpio.set_pro_rate = stac9460_set_rate_val;
	return 0;
	}


	static unsigned char wtm_eeprom[] = {
	[ICE_EEP2_SYSCONF] = 0x67, /*SYSCONF: clock 192KHz, mpu401,
	4ADC, 8DAC */
	[ICE_EEP2_ACLINK] = 0x80, /* ACLINK : I2S */
	[ICE_EEP2_I2S] = 0xf8, /* I2S: vol; 96k, 24bit, 192k */
	[ICE_EEP2_SPDIF] = 0xc1, /SPDIF: out-en, spidf ext out/
	[ICE_EEP2_GPIO_DIR] = 0x9f,
	[ICE_EEP2_GPIO_DIR1] = 0xff,
	[ICE_EEP2_GPIO_DIR2] = 0x7f,
	[ICE_EEP2_GPIO_MASK] = 0x9f,
	[ICE_EEP2_GPIO_MASK1] = 0xff,
	[ICE_EEP2_GPIO_MASK2] = 0x7f,
	[ICE_EEP2_GPIO_STATE] = 0x16,
	[ICE_EEP2_GPIO_STATE1] = 0x80,
	[ICE_EEP2_GPIO_STATE2] = 0x00,
	};


	/entry point/
	struct snd_ice1712_card_info snd_vt1724_wtm_cards[] = {
	{
	.subvendor = VT1724_SUBDEVICE_WTM,
	.name = "ESI Waveterminal 192M",
	.model = "WT192M",
	.chip_init = wtm_init,
	.build_controls = wtm_add_controls,
	.eeprom_size = sizeof(wtm_eeprom),
	.eeprom_data = wtm_eeprom,
	},
	{} /terminator/
	};