prodigy192.c

linux 内核源代码

/*
 *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
 *
 *   Lowlevel functions for AudioTrak Prodigy 192 cards
 *   Supported IEC958 input from optional MI/ODI/O add-on card.
 *
 *   Specifics (SW, HW):
 *   -------------------
 *   	* 49.5MHz crystal
 *   	* SPDIF-OUT on the card:
 *  	  - coax (through isolation transformer)/toslink supplied by
 *          74HC04 gates - 3 in parallel
 *   	  - output switched between on-board CD drive dig-out connector
 *          and ice1724 SPDTX pin, using 74HC02 NOR gates, controlled
 *          by GPIO20 (0 = CD dig-out, 1 = SPDTX)
 *   	* SPDTX goes straight to MI/ODI/O card's SPDIF-OUT coax
 *
 *   	* MI/ODI/O card: AK4114 based, used for iec958 input only
 *   		- toslink input -> RX0
 *   		- coax input -> RX1
 *   		- 4wire protocol:
 *   			AK4114		ICE1724
 *   			------------------------------
 * 			CDTO (pin 32) -- GPIO11 pin 86
 * 			CDTI (pin 33) -- GPIO10 pin 77
 * 			CCLK (pin 34) -- GPIO9 pin 76
 * 			CSN  (pin 35) -- GPIO8 pin 75
 *   		- output data Mode 7 (24bit, I2S, slave)
 *		- both MCKO1 and MCKO2 of ak4114 are fed to FPGA, which
 *		  outputs master clock to SPMCLKIN of ice1724.
 *		  Experimentally I found out that only a combination of
 *		  OCKS0=1, OCKS1=1 (128fs, 64fs output) and ice1724 -
 *		  VT1724_MT_I2S_MCLK_128X=0 (256fs input) yields correct
 *		  sampling rate. That means the the FPGA doubles the
 *		  MCK01 rate.
 *
 *	Copyright (c) 2003 Takashi Iwai <[e-mail]>
 *      Copyright (c) 2003 Dimitromanolakis Apostolos <[e-mail]>
 *      Copyright (c) 2004 Kouichi ONO <[e-mail]>
 *
 *   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 <sound/driver.h>
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <sound/core.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "prodigy192.h"
#include "stac946x.h"
#include <sound/tlv.h>

static inline void stac9460_put(struct snd_ice1712 *ice, int reg, unsigned char val)
{
	snd_vt1724_write_i2c(ice, PRODIGY192_STAC9460_ADDR, reg, val);
}

static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
{
	return snd_vt1724_read_i2c(ice, PRODIGY192_STAC9460_ADDR, reg);
}

/*
 * DAC mute control
 */
#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);
	unsigned char val;
	int idx;

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

	if (kcontrol->private_value)
		idx = STAC946X_MASTER_VOLUME;
	else
		idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_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);

	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;
	unsigned char vol;

	if (kcontrol->private_value)
		idx = STAC946X_MASTER_VOLUME;
	else
		idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
	vol = stac9460_get(ice, idx) & 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;
	unsigned char tmp, ovol, nvol;
	int change;

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

	for (i = 0; i < 2; ++i) {
		val = stac9460_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;
	int change;

	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);
	}

	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;
	unsigned char vol;

	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;
	}

	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;
	unsigned char ovol, nvol;
	int change;

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

	return change;
}

#if 0
/*
 * Headphone Amplifier
 */
static int aureon_set_headphone_amp(struct snd_ice1712 *ice, int enable)
{
	unsigned int tmp, tmp2;

	tmp2 = tmp = snd_ice1712_gpio_read(ice);
	if (enable)
		tmp |= AUREON_HP_SEL;
	else
		tmp &= ~ AUREON_HP_SEL;
	if (tmp != tmp2) {
		snd_ice1712_gpio_write(ice, tmp);
		return 1;
	}
	return 0;
}

static int aureon_get_headphone_amp(struct snd_ice1712 *ice)
{
	unsigned int tmp = snd_ice1712_gpio_read(ice);

	return ( tmp & AUREON_HP_SEL )!= 0;
}

#define aureon_bool_info	snd_ctl_boolean_mono_info

static int aureon_hpamp_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = aureon_get_headphone_amp(ice);
	return 0;
}


static int aureon_hpamp_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	return aureon_set_headphone_amp(ice,ucontrol->value.integer.value[0]);
}

/*
 * Deemphasis
 */
static int aureon_deemp_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	ucontrol->value.integer.value[0] = (wm_get(ice, WM_DAC_CTRL2) & 0xf) == 0xf;
	return 0;
}

static int aureon_deemp_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int temp, temp2;
	temp2 = temp = wm_get(ice, WM_DAC_CTRL2);
	if (ucontrol->value.integer.value[0])
		temp |= 0xf;
	else
		temp &= ~0xf;
	if (temp != temp2) {
		wm_put(ice, WM_DAC_CTRL2, temp);
		return 1;
	}
	return 0;
}

/*
 * ADC Oversampling
 */
static int aureon_oversampling_info(struct snd_kcontrol *k, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = { "128x", "64x"	};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;

	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);

        return 0;
}

static int aureon_oversampling_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	ucontrol->value.enumerated.item[0] = (wm_get(ice, WM_MASTER) & 0x8) == 0x8;
	return 0;
}

static int aureon_oversampling_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	int temp, temp2;
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	temp2 = temp = wm_get(ice, WM_MASTER);

	if (ucontrol->value.enumerated.item[0])
		temp |= 0x8;
	else
		temp &= ~0x8;

	if (temp != temp2) {
		wm_put(ice, WM_MASTER, temp);
		return 1;
	}
	return 0;
}
#endif
static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
	       			struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = { "Line In", "Mic" };

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;

	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);

        return 0;
}


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;
		
	val = stac9460_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;
	old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
	new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) | (old & ~0x80);
	change = (new != old);
	if (change)
		stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
	return change;
}

static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);

/*
 * mixers
 */

static struct snd_kcontrol_new stac_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.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,
		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |