hoontech.c

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/*
 *   ALSA driver for ICEnsemble ICE1712 (Envy24)
 *
 *   Lowlevel functions for Hoontech STDSP24
 *
 *  Copyright (c) 2000 Jaroslav Kysela <[email protected]>
 *
 *   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 <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 "hoontech.h"

/* Hoontech-specific setting */
struct hoontech_spec {
    unsigned char boxbits[4];
    unsigned int config;
    unsigned short boxconfig[4];
};

static void __devinit snd_ice1712_stdsp24_gpio_write(struct snd_ice1712 *ice, unsigned char byte)
{
    byte |= ICE1712_STDSP24_CLOCK_BIT;
    udelay(100);
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, byte);
    byte &= ~ICE1712_STDSP24_CLOCK_BIT;
    udelay(100);
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, byte);
    byte |= ICE1712_STDSP24_CLOCK_BIT;
    udelay(100);
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, byte);
}

static void __devinit snd_ice1712_stdsp24_darear(struct snd_ice1712 *ice, int activate)
{
    struct hoontech_spec *spec = ice->spec;
    mutex_lock(&ice->gpio_mutex);
    ICE1712_STDSP24_0_DAREAR(spec->boxbits, activate);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[0]);
    mutex_unlock(&ice->gpio_mutex);
}

static void __devinit snd_ice1712_stdsp24_mute(struct snd_ice1712 *ice, int activate)
{
    struct hoontech_spec *spec = ice->spec;
    mutex_lock(&ice->gpio_mutex);
    ICE1712_STDSP24_3_MUTE(spec->boxbits, activate);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[3]);
    mutex_unlock(&ice->gpio_mutex);
}

static void __devinit snd_ice1712_stdsp24_insel(struct snd_ice1712 *ice, int activate)
{
    struct hoontech_spec *spec = ice->spec;
    mutex_lock(&ice->gpio_mutex);
    ICE1712_STDSP24_3_INSEL(spec->boxbits, activate);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[3]);
    mutex_unlock(&ice->gpio_mutex);
}

static void __devinit snd_ice1712_stdsp24_box_channel(struct snd_ice1712 *ice, int box, int chn, int activate)
{
    struct hoontech_spec *spec = ice->spec;

    mutex_lock(&ice->gpio_mutex);

    /* select box */
    ICE1712_STDSP24_0_BOX(spec->boxbits, box);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[0]);

    /* prepare for write */
    if (chn == 3)
        ICE1712_STDSP24_2_CHN4(spec->boxbits, 0);
    ICE1712_STDSP24_2_MIDI1(spec->boxbits, activate);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[3]);

    ICE1712_STDSP24_1_CHN1(spec->boxbits, 1);
    ICE1712_STDSP24_1_CHN2(spec->boxbits, 1);
    ICE1712_STDSP24_1_CHN3(spec->boxbits, 1);
    ICE1712_STDSP24_2_CHN4(spec->boxbits, 1);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[1]);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);
    udelay(100);
    if (chn == 3) {
        ICE1712_STDSP24_2_CHN4(spec->boxbits, 0);
        snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);
    } else {
        switch (chn) {
        case 0: ICE1712_STDSP24_1_CHN1(spec->boxbits, 0); break;
        case 1: ICE1712_STDSP24_1_CHN2(spec->boxbits, 0); break;
        case 2: ICE1712_STDSP24_1_CHN3(spec->boxbits, 0); break;
        }
        snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[1]);
    }
    udelay(100);
    ICE1712_STDSP24_1_CHN1(spec->boxbits, 1);
    ICE1712_STDSP24_1_CHN2(spec->boxbits, 1);
    ICE1712_STDSP24_1_CHN3(spec->boxbits, 1);
    ICE1712_STDSP24_2_CHN4(spec->boxbits, 1);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[1]);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);
    udelay(100);

    ICE1712_STDSP24_2_MIDI1(spec->boxbits, 0);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);

    mutex_unlock(&ice->gpio_mutex);
}

static void __devinit snd_ice1712_stdsp24_box_midi(struct snd_ice1712 *ice, int box, int master)
{
    struct hoontech_spec *spec = ice->spec;

    mutex_lock(&ice->gpio_mutex);

    /* select box */
    ICE1712_STDSP24_0_BOX(spec->boxbits, box);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[0]);

    ICE1712_STDSP24_2_MIDIIN(spec->boxbits, 1);
    ICE1712_STDSP24_2_MIDI1(spec->boxbits, master);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[3]);

    udelay(100);
    
    ICE1712_STDSP24_2_MIDIIN(spec->boxbits, 0);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);
    
    mdelay(10);
    
    ICE1712_STDSP24_2_MIDIIN(spec->boxbits, 1);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[2]);

    mutex_unlock(&ice->gpio_mutex);
}

static void __devinit snd_ice1712_stdsp24_midi2(struct snd_ice1712 *ice, int activate)
{
    struct hoontech_spec *spec = ice->spec;
    mutex_lock(&ice->gpio_mutex);
    ICE1712_STDSP24_3_MIDI2(spec->boxbits, activate);
    snd_ice1712_stdsp24_gpio_write(ice, spec->boxbits[3]);
    mutex_unlock(&ice->gpio_mutex);
}

static int __devinit snd_ice1712_hoontech_init(struct snd_ice1712 *ice)
{
    struct hoontech_spec *spec;
    int box, chn;

    ice->num_total_dacs = 8;
    ice->num_total_adcs = 8;

    spec = kzalloc(sizeof(*spec), GFP_KERNEL);
    if (!spec)
        return -ENOMEM;
    ice->spec = spec;

    ICE1712_STDSP24_SET_ADDR(spec->boxbits, 0);
    ICE1712_STDSP24_CLOCK(spec->boxbits, 0, 1);
    ICE1712_STDSP24_0_BOX(spec->boxbits, 0);
    ICE1712_STDSP24_0_DAREAR(spec->boxbits, 0);

    ICE1712_STDSP24_SET_ADDR(spec->boxbits, 1);
    ICE1712_STDSP24_CLOCK(spec->boxbits, 1, 1);
    ICE1712_STDSP24_1_CHN1(spec->boxbits, 1);
    ICE1712_STDSP24_1_CHN2(spec->boxbits, 1);
    ICE1712_STDSP24_1_CHN3(spec->boxbits, 1);
    
    ICE1712_STDSP24_SET_ADDR(spec->boxbits, 2);
    ICE1712_STDSP24_CLOCK(spec->boxbits, 2, 1);
    ICE1712_STDSP24_2_CHN4(spec->boxbits, 1);
    ICE1712_STDSP24_2_MIDIIN(spec->boxbits, 1);
    ICE1712_STDSP24_2_MIDI1(spec->boxbits, 0);

    ICE1712_STDSP24_SET_ADDR(spec->boxbits, 3);
    ICE1712_STDSP24_CLOCK(spec->boxbits, 3, 1);
    ICE1712_STDSP24_3_MIDI2(spec->boxbits, 0);
    ICE1712_STDSP24_3_MUTE(spec->boxbits, 1);
    ICE1712_STDSP24_3_INSEL(spec->boxbits, 0);

    /* let's go - activate only functions in first box */
    spec->config = 0;
                /* ICE1712_STDSP24_MUTE |
                   ICE1712_STDSP24_INSEL |
                   ICE1712_STDSP24_DAREAR; */
    /*  These boxconfigs have caused problems in the past.
     *  The code is not optimal, but should now enable a working config to
     *  be achieved.
     *  ** MIDI IN can only be configured on one box **
     *  ICE1712_STDSP24_BOX_MIDI1 needs to be set for that box.
     *  Tests on a ADAC2000 box suggest the box config flags do not
     *  work as would be expected, and the inputs are crossed.
     *  Setting ICE1712_STDSP24_BOX_MIDI1 and ICE1712_STDSP24_BOX_MIDI2
     *  on the same box connects MIDI-In to both 401 uarts; both outputs
     *  are then active on all boxes.
     *  The default config here sets up everything on the first box.
     *  Alan Horstmann  5.2.2008
     */
    spec->boxconfig[0] = ICE1712_STDSP24_BOX_CHN1 |
                     ICE1712_STDSP24_BOX_CHN2 |
                     ICE1712_STDSP24_BOX_CHN3 |
                     ICE1712_STDSP24_BOX_CHN4 |
                     ICE1712_STDSP24_BOX_MIDI1 |
                     ICE1712_STDSP24_BOX_MIDI2;
    spec->boxconfig[1] = 
    spec->boxconfig[2] = 
    spec->boxconfig[3] = 0;
    snd_ice1712_stdsp24_darear(ice,
        (spec->config & ICE1712_STDSP24_DAREAR) ? 1 : 0);
    snd_ice1712_stdsp24_mute(ice,
        (spec->config & ICE1712_STDSP24_MUTE) ? 1 : 0);
    snd_ice1712_stdsp24_insel(ice,
        (spec->config & ICE1712_STDSP24_INSEL) ? 1 : 0);
    for (box = 0; box < 4; box++) {
        if (spec->boxconfig[box] & ICE1712_STDSP24_BOX_MIDI2)
                        snd_ice1712_stdsp24_midi2(ice, 1);
        for (chn = 0; chn < 4; chn++)
            snd_ice1712_stdsp24_box_channel(ice, box, chn,
                (spec->boxconfig[box] & (1 << chn)) ? 1 : 0);
        if (spec->boxconfig[box] & ICE1712_STDSP24_BOX_MIDI1)
            snd_ice1712_stdsp24_box_midi(ice, box, 1);
    }

    return 0;
}

/*
 * AK4524 access
 */

/* start callback for STDSP24 with modified hardware */
static void stdsp24_ak4524_lock(struct snd_akm4xxx *ak, int chip)
{
    struct snd_ice1712 *ice = ak->private_data[0];
    unsigned char tmp;
    snd_ice1712_save_gpio_status(ice);
    tmp =   ICE1712_STDSP24_SERIAL_DATA |
        ICE1712_STDSP24_SERIAL_CLOCK |
        ICE1712_STDSP24_AK4524_CS;
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_DIRECTION,
              ice->gpio.direction | tmp);
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ~tmp);
}

static int __devinit snd_ice1712_value_init(struct snd_ice1712 *ice)
{
    /* Hoontech STDSP24 with modified hardware */
    static struct snd_akm4xxx akm_stdsp24_mv __devinitdata = {
        .num_adcs = 2,
        .num_dacs = 2,
        .type = SND_AK4524,
        .ops = {
            .lock = stdsp24_ak4524_lock
        }
    };

    static struct snd_ak4xxx_private akm_stdsp24_mv_priv __devinitdata = {
        .caddr = 2,
        .cif = 1, /* CIF high */
        .data_mask = ICE1712_STDSP24_SERIAL_DATA,
        .clk_mask = ICE1712_STDSP24_SERIAL_CLOCK,
        .cs_mask = ICE1712_STDSP24_AK4524_CS,
        .cs_addr = ICE1712_STDSP24_AK4524_CS,
        .cs_none = 0,
        .add_flags = 0,
    };

    int err;
    struct snd_akm4xxx *ak;

    /* set the analog DACs */
    ice->num_total_dacs = 2;

    /* set the analog ADCs */
    ice->num_total_adcs = 2;
    
    /* analog section */
    ak = ice->akm = kmalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
    if (! ak)
        return -ENOMEM;
    ice->akm_codecs = 1;

    err = snd_ice1712_akm4xxx_init(ak, &akm_stdsp24_mv, &akm_stdsp24_mv_priv, ice);
    if (err < 0)
        return err;

    /* ak4524 controls */
    err = snd_ice1712_akm4xxx_build_controls(ice);
    if (err < 0)
        return err;

    return 0;
}

static int __devinit snd_ice1712_ez8_init(struct snd_ice1712 *ice)
{
    ice->gpio.write_mask = ice->eeprom.gpiomask;
    ice->gpio.direction = ice->eeprom.gpiodir;
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_WRITE_MASK, ice->eeprom.gpiomask);
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_DIRECTION, ice->eeprom.gpiodir);
    snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, ice->eeprom.gpiostate);
    return 0;
}


/* entry point */
struct snd_ice1712_card_info snd_ice1712_hoontech_cards[] __devinitdata = {
    {
        .subvendor = ICE1712_SUBDEVICE_STDSP24,
        .name = "Hoontech SoundTrack Audio DSP24",
        .model = "dsp24",
        .chip_init = snd_ice1712_hoontech_init,
        .mpu401_1_name = "MIDI-1 Hoontech/STA DSP24",
        .mpu401_2_name = "MIDI-2 Hoontech/STA DSP24",
    },
    {
        .subvendor = ICE1712_SUBDEVICE_STDSP24_VALUE,   /* a dummy id */
        .name = "Hoontech SoundTrack Audio DSP24 Value",
        .model = "dsp24_value",
        .chip_init = snd_ice1712_value_init,
    },
    {
        .subvendor = ICE1712_SUBDEVICE_STDSP24_MEDIA7_1,
        .name = "Hoontech STA DSP24 Media 7.1",
        .model = "dsp24_71",
        .chip_init = snd_ice1712_hoontech_init,
    },
    {
        .subvendor = ICE1712_SUBDEVICE_EVENT_EZ8,   /* a dummy id */
        .name = "Event Electronics EZ8",
        .model = "ez8",
        .chip_init = snd_ice1712_ez8_init,
    },
    { } /* terminator */
};