aureon.c

LINUX 2.6.17.4的源码

/*
 *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
 *
 *   Lowlevel functions for Terratec Aureon cards
 *
 *	Copyright (c) 2003 Takashi Iwai <[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
 *
 *
 * NOTES:
 *
 * - we reuse the struct snd_akm4xxx record for storing the wm8770 codec data.
 *   both wm and akm codecs are pretty similar, so we can integrate
 *   both controls in the future, once if wm codecs are reused in
 *   many boards.
 *
 * - DAC digital volumes are not implemented in the mixer.
 *   if they show better response than DAC analog volumes, we can use them
 *   instead.
 *
 *   Lowlevel functions for AudioTrak Prodigy 7.1 (and possibly 192) cards
 *      Copyright (c) 2003 Dimitromanolakis Apostolos <[e-mail]>
 *
 *   version 0.82: Stable / not all features work yet (no communication with AC97 secondary)
 *       added 64x/128x oversampling switch (should be 64x only for 96khz)
 *       fixed some recording labels (still need to check the rest)
 *       recording is working probably thanks to correct wm8770 initialization
 *
 *   version 0.5: Initial release:
 *           working: analog output, mixer, headphone amplifier switch
 *       not working: prety much everything else, at least i could verify that
 *                    we have no digital output, no capture, pretty bad clicks and poops
 *                    on mixer switch and other coll stuff.
 *
 */      

#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 <linux/mutex.h>

#include <sound/core.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "aureon.h"

/* WM8770 registers */
#define WM_DAC_ATTEN		0x00	/* DAC1-8 analog attenuation */
#define WM_DAC_MASTER_ATTEN	0x08	/* DAC master analog attenuation */
#define WM_DAC_DIG_ATTEN	0x09	/* DAC1-8 digital attenuation */
#define WM_DAC_DIG_MASTER_ATTEN	0x11	/* DAC master digital attenuation */
#define WM_PHASE_SWAP		0x12	/* DAC phase */
#define WM_DAC_CTRL1		0x13	/* DAC control bits */
#define WM_MUTE			0x14	/* mute controls */
#define WM_DAC_CTRL2		0x15	/* de-emphasis and zefo-flag */
#define WM_INT_CTRL		0x16	/* interface control */
#define WM_MASTER		0x17	/* master clock and mode */
#define WM_POWERDOWN		0x18	/* power-down controls */
#define WM_ADC_GAIN		0x19	/* ADC gain L(19)/R(1a) */
#define WM_ADC_MUX		0x1b	/* input MUX */
#define WM_OUT_MUX1		0x1c	/* output MUX */
#define WM_OUT_MUX2		0x1e	/* output MUX */
#define WM_RESET		0x1f	/* software reset */

/* CS8415A registers */
#define CS8415_CTRL1	0x01
#define CS8415_CTRL2	0x02
#define CS8415_QSUB		0x14
#define CS8415_RATIO	0x1E
#define CS8415_C_BUFFER	0x20
#define CS8415_ID		0x7F

/* PCA9554 registers */
#define PCA9554_DEV     0x40            /* I2C device address */
#define PCA9554_IN      0x00            /* input port */
#define PCA9554_OUT     0x01            /* output port */
#define PCA9554_INVERT  0x02            /* input invert */
#define PCA9554_DIR     0x03            /* port directions */

/*
 * Aureon Universe additional controls using PCA9554
 */

/*
 * Send data to pca9554
 */
static void aureon_pca9554_write(struct snd_ice1712 *ice, unsigned char reg,
				 unsigned char data)
{
	unsigned int tmp;
	int i, j;
	unsigned char dev = PCA9554_DEV;  /* ID 0100000, write */
	unsigned char val = 0;

	tmp = snd_ice1712_gpio_read(ice);

	snd_ice1712_gpio_set_mask(ice, ~(AUREON_SPI_MOSI|AUREON_SPI_CLK|
					 AUREON_WM_RW|AUREON_WM_CS|
					 AUREON_CS8415_CS));
	tmp |= AUREON_WM_RW;
	tmp |= AUREON_CS8415_CS | AUREON_WM_CS; /* disable SPI devices */

	tmp &= ~AUREON_SPI_MOSI;
	tmp &= ~AUREON_SPI_CLK;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(50);

	/* 
	 * send i2c stop condition and start condition
	 * to obtain sane state
	 */
	tmp |= AUREON_SPI_CLK;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(50);
	tmp |= AUREON_SPI_MOSI;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(100);
	tmp &= ~AUREON_SPI_MOSI;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(50);
	tmp &= ~AUREON_SPI_CLK;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(100);
	/*
	 * send device address, command and value,
	 * skipping ack cycles inbetween
	 */
	for (j = 0; j < 3; j++) {
		switch(j) {
		case 0: val = dev; break;
		case 1: val = reg; break;
		case 2: val = data; break;
		}
		for (i = 7; i >= 0; i--) {
			tmp &= ~AUREON_SPI_CLK;
			snd_ice1712_gpio_write(ice, tmp);
			udelay(40);
			if (val & (1 << i))
				tmp |= AUREON_SPI_MOSI;
			else
				tmp &= ~AUREON_SPI_MOSI;
			snd_ice1712_gpio_write(ice, tmp);
			udelay(40);
			tmp |= AUREON_SPI_CLK;
			snd_ice1712_gpio_write(ice, tmp);
			udelay(40);
		}
                tmp &= ~AUREON_SPI_CLK;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(40);
		tmp |= AUREON_SPI_CLK;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(40);
		tmp &= ~AUREON_SPI_CLK;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(40);
	}
	tmp &= ~AUREON_SPI_CLK;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(40);
	tmp &= ~AUREON_SPI_MOSI;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(40);
	tmp |= AUREON_SPI_CLK;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(50);
	tmp |= AUREON_SPI_MOSI;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(100);
}

static int aureon_universe_inmux_info(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_info *uinfo)
{
	char *texts[3] = {"Internal Aux", "Wavetable", "Rear Line-In"};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 3;
	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_universe_inmux_get(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	ucontrol->value.integer.value[0] = ice->spec.aureon.pca9554_out;
	return 0;
}

static int aureon_universe_inmux_put(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char oval, nval;
	int change;

	snd_ice1712_save_gpio_status(ice);
	
	oval = ice->spec.aureon.pca9554_out;
	nval = ucontrol->value.integer.value[0];
	if ((change = (oval != nval))) {
		aureon_pca9554_write(ice, PCA9554_OUT, nval);
		ice->spec.aureon.pca9554_out = nval;
	}
	snd_ice1712_restore_gpio_status(ice);
	
	return change;
}


static void aureon_ac97_write(struct snd_ice1712 *ice, unsigned short reg,
			      unsigned short val)
{
	unsigned int tmp;

	/* Send address to XILINX chip */
	tmp = (snd_ice1712_gpio_read(ice) & ~0xFF) | (reg & 0x7F);
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	tmp |= AUREON_AC97_ADDR;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	tmp &= ~AUREON_AC97_ADDR;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);	

	/* Send low-order byte to XILINX chip */
	tmp &= ~AUREON_AC97_DATA_MASK;
	tmp |= val & AUREON_AC97_DATA_MASK;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	tmp |= AUREON_AC97_DATA_LOW;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	tmp &= ~AUREON_AC97_DATA_LOW;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	
	/* Send high-order byte to XILINX chip */
	tmp &= ~AUREON_AC97_DATA_MASK;
	tmp |= (val >> 8) & AUREON_AC97_DATA_MASK;

	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	tmp |= AUREON_AC97_DATA_HIGH;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	tmp &= ~AUREON_AC97_DATA_HIGH;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	
	/* Instruct XILINX chip to parse the data to the STAC9744 chip */
	tmp |= AUREON_AC97_COMMIT;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	tmp &= ~AUREON_AC97_COMMIT;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(10);
	
	/* Store the data in out private buffer */
	ice->spec.aureon.stac9744[(reg & 0x7F) >> 1] = val;
}

static unsigned short aureon_ac97_read(struct snd_ice1712 *ice, unsigned short reg)
{
       return ice->spec.aureon.stac9744[(reg & 0x7F) >> 1];
}

/*
 * Initialize STAC9744 chip
 */
static int aureon_ac97_init (struct snd_ice1712 *ice)
{
	int i;
	static unsigned short ac97_defaults[] = {
		0x00, 0x9640,
		0x02, 0x8000,
		0x04, 0x8000,
		0x06, 0x8000,
		0x0C, 0x8008,
		0x0E, 0x8008,
		0x10, 0x8808,
		0x12, 0x8808,
		0x14, 0x8808,
		0x16, 0x8808,
		0x18, 0x8808,
		0x1C, 0x8000,
		0x26, 0x000F,
		0x28, 0x0201,
		0x2C, 0xBB80,
		0x32, 0xBB80,
		0x7C, 0x8384,
		0x7E, 0x7644,
		(unsigned short)-1
	};
	unsigned int tmp;

	/* Cold reset */
	tmp = (snd_ice1712_gpio_read(ice) | AUREON_AC97_RESET) & ~AUREON_AC97_DATA_MASK;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(3);
	
	tmp &= ~AUREON_AC97_RESET;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(3);
	
	tmp |= AUREON_AC97_RESET;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(3);
	
	memset(&ice->spec.aureon.stac9744, 0, sizeof(ice->spec.aureon.stac9744));
	for (i=0; ac97_defaults[i] != (unsigned short)-1; i+=2)
		ice->spec.aureon.stac9744[(ac97_defaults[i]) >> 1] = ac97_defaults[i+1];
		
	aureon_ac97_write(ice, AC97_MASTER, 0x0000); // Unmute AC'97 master volume permanently - muting is done by WM8770

	return 0;
}

#define AUREON_AC97_STEREO	0x80

/*
 * AC'97 volume controls
 */
static int aureon_ac97_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = kcontrol->private_value & AUREON_AC97_STEREO ? 2 : 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 31;
	return 0;
}

static int aureon_ac97_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short vol;

	mutex_lock(&ice->gpio_mutex);

	vol = aureon_ac97_read(ice, kcontrol->private_value & 0x7F);
	ucontrol->value.integer.value[0] = 0x1F - (vol & 0x1F);
	if (kcontrol->private_value & AUREON_AC97_STEREO)
		ucontrol->value.integer.value[1] = 0x1F - ((vol >> 8) & 0x1F);

	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

static int aureon_ac97_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short ovol, nvol;
	int change;
	
	snd_ice1712_save_gpio_status(ice);

	ovol = aureon_ac97_read(ice, kcontrol->private_value & 0x7F);
	nvol = (0x1F - ucontrol->value.integer.value[0]) & 0x001F;
	if (kcontrol->private_value & AUREON_AC97_STEREO)
		nvol |= ((0x1F - ucontrol->value.integer.value[1]) << 8) & 0x1F00;
	nvol |= ovol & ~0x1F1F;
	
	if ((change = (ovol != nvol)))
		aureon_ac97_write(ice, kcontrol->private_value & 0x7F, nvol);

	snd_ice1712_restore_gpio_status(ice);

	return change;		
}

/*
 * AC'97 mute controls
 */
#define aureon_ac97_mute_info	aureon_mono_bool_info

static int aureon_ac97_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	mutex_lock(&ice->gpio_mutex);

	ucontrol->value.integer.value[0] = aureon_ac97_read(ice, kcontrol->private_value & 0x7F) & 0x8000 ? 0 : 1;

	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

static int aureon_ac97_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short ovol, nvol;
	int change;

	snd_ice1712_save_gpio_status(ice);
	
	ovol = aureon_ac97_read(ice, kcontrol->private_value & 0x7F);
	nvol = (ucontrol->value.integer.value[0] ? 0x0000 : 0x8000) | (ovol & ~	0x8000);
	
	if ((change = (ovol != nvol)))
		aureon_ac97_write(ice, kcontrol->private_value & 0x7F, nvol);
		
	snd_ice1712_restore_gpio_status(ice);

	return change;
}

/*
 * AC'97 mute controls
 */
#define aureon_ac97_micboost_info	aureon_mono_bool_info

static int aureon_ac97_micboost_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	mutex_lock(&ice->gpio_mutex);

	ucontrol->value.integer.value[0] = aureon_ac97_read(ice, AC97_MIC) & 0x0020 ? 0 : 1;

	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

static int aureon_ac97_micboost_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short ovol, nvol;
	int change;

	snd_ice1712_save_gpio_status(ice);
	
	ovol = aureon_ac97_read(ice, AC97_MIC);
	nvol = (ucontrol->value.integer.value[0] ? 0x0000 : 0x0020) | (ovol & ~0x0020);
	
	if ((change = (ovol != nvol)))
		aureon_ac97_write(ice, AC97_MIC, nvol);
		
	snd_ice1712_restore_gpio_status(ice);

	return change;
}

/*
 * write data in the SPI mode
 */
static void aureon_spi_write(struct snd_ice1712 *ice, unsigned int cs, unsigned int data, int bits)
{
	unsigned int tmp;
	int i;
	unsigned int mosi, clk;

	tmp = snd_ice1712_gpio_read(ice);

	if (ice->eeprom.subvendor == VT1724_SUBDEVICE_PRODIGY71LT) {
		snd_ice1712_gpio_set_mask(ice, ~(PRODIGY_SPI_MOSI|PRODIGY_SPI_CLK|PRODIGY_WM_CS));
		mosi = PRODIGY_SPI_MOSI;
		clk = PRODIGY_SPI_CLK;
	}
	else {
		snd_ice1712_gpio_set_mask(ice, ~(AUREON_WM_RW|AUREON_SPI_MOSI|AUREON_SPI_CLK|
						 AUREON_WM_CS|AUREON_CS8415_CS));
		mosi = AUREON_SPI_MOSI;
		clk = AUREON_SPI_CLK;
		
		tmp |= AUREON_WM_RW;
	}
	
	tmp &= ~cs;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(1);

	for (i = bits - 1; i >= 0; i--) {
		tmp &= ~clk;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(1);
		if (data & (1 << i))
			tmp |= mosi;
		else
			tmp &= ~mosi;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(1);
		tmp |= clk;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(1);
	}

	tmp &= ~clk;
	tmp |= cs;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(1);
	tmp |= clk;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(1);
}

/*
 * Read data in SPI mode
 */
static void aureon_spi_read(struct snd_ice1712 *ice, unsigned int cs, unsigned int data, int bits, unsigned char *buffer, int size) {
	int i, j;
	unsigned int tmp;

	tmp = (snd_ice1712_gpio_read(ice) & ~AUREON_SPI_CLK) | AUREON_CS8415_CS|AUREON_WM_CS;
	snd_ice1712_gpio_write(ice, tmp);
	tmp &= ~cs;
	snd_ice1712_gpio_write(ice, tmp);
	udelay(1);

	for (i=bits-1; i>=0; i--) {
		if (data & (1 << i))
			tmp |= AUREON_SPI_MOSI;
		else
			tmp &= ~AUREON_SPI_MOSI;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(1);