xserver-multidpi/hw/xfree86/i2c/uda1380.c

/*************************************************************************************
 * Copyright (C) 2005 Bogdan D. bogdand@users.sourceforge.net
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this 
 * software and associated documentation files (the "Software"), to deal in the Software 
 * without restriction, including without limitation the rights to use, copy, modify, 
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, 
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or 
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE 
 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the author shall not be used in advertising or 
 * otherwise to promote the sale, use or other dealings in this Software without prior written 
 * authorization from the author.
 *
 ************************************************************************************/

#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif

#include "xf86.h"
#include "xf86i2c.h"
#include "uda1380.h"
#include "i2c_def.h"

UDA1380Ptr
Detect_uda1380(I2CBusPtr b, I2CSlaveAddr addr)
{
    UDA1380Ptr t;
    I2CByte a;

    t = calloc(1, sizeof(UDA1380Rec));
    if (t == NULL)
        return NULL;
    switch (addr) {
    case UDA1380_ADDR_1:
    case UDA1380_ADDR_2:
        t->d.DevName = "UDA1380 Stereo audion coder-decoder";
        break;
    default:
        t->d.DevName = "Generic UDAxxxx";
        break;
    }
    t->d.SlaveAddr = addr;
    t->d.pI2CBus = b;
    t->d.NextDev = NULL;
    t->d.StartTimeout = b->StartTimeout;
    t->d.BitTimeout = b->BitTimeout;
    t->d.AcknTimeout = b->AcknTimeout;
    t->d.ByteTimeout = b->ByteTimeout;

    if (!I2C_WriteRead(&(t->d), NULL, 0, &a, 1)) {
        free(t);
        return NULL;
    }

    /* set default parameters */
    if (!I2CDevInit(&(t->d))) {
        free(t);
        return NULL;
    }

    xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO,
               "UDA1380 stereo coder-decoder detected\n");

    return t;
}

Bool
uda1380_init(UDA1380Ptr t)
{
    CARD8 data[3];
    CARD16 tmp;
    Bool ret;

    /* Power control */
    data[0] = 0x02;
    tmp =
        (1 << 13) | (1 << 10) | (1 << 8) | (1 << 7) | (1 << 6) | (1 << 3) | (1
                                                                             <<
                                                                             1);
    data[1] = (CARD8) ((tmp >> 8) & 0xff);
    data[2] = (CARD8) (tmp & 0xff);
    ret = I2C_WriteRead(&(t->d), data, 3, NULL, 0);
    if (ret == FALSE) {
        xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO,
                   "UDA1380 failed to initialize\n");
        return FALSE;
    }

    /* Analog mixer  (AVC) */
    data[0] = 0x03;
    /* the analog mixer is muted initially */
    data[1] = 0x3f;
    data[2] = 0x3f;
    ret = I2C_WriteRead(&(t->d), data, 3, NULL, 0);
    if (ret == FALSE) {
        xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO,
                   "UDA1380 failed to initialize\n");
        return FALSE;
    }

    xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO, "UDA1380 initialized\n");

    return TRUE;
}

void
uda1380_shutdown(UDA1380Ptr t)
{
    CARD8 data[3];
    Bool ret;

    /* Power control */
    data[0] = 0x02;
    data[1] = 0;
    data[2] = 0;
    ret = I2C_WriteRead(&(t->d), data, 3, NULL, 0);
    if (ret == FALSE)
        xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO,
                   "UDA1380 failed to shutdown\n");
}

void
uda1380_setvolume(UDA1380Ptr t, INT32 value)
{
    CARD8 data[3];

    /*
     * We have to scale the value ranging from -1000 to 1000 to 0x2c to 0
     */
    CARD8 volume = 47 - (CARD8) ((value + 1000) * 47 / 2000);
    Bool ret;

    t->analog_mixer_settings = ((volume << 8) & 0x3f00) | (volume & 0x3f);

    /* Analog mixer  (AVC) */
    data[0] = 0x03;
    data[1] = volume & 0x3f;
    data[2] = volume & 0x3f;
    ret = I2C_WriteRead(&(t->d), data, 3, NULL, 0);
    if (ret == FALSE)
        xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO,
                   "UDA1380 failed to set volume\n");
}

void
uda1380_mute(UDA1380Ptr t, Bool mute)
{
    CARD8 data[3];
    Bool ret;

    if (mute == TRUE) {
        /* Analog mixer  (AVC) */
        data[0] = 0x03;
        data[1] = 0xff;
        data[2] = 0xff;
        ret = I2C_WriteRead(&(t->d), data, 3, NULL, 0);
        if (ret == FALSE)
            xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO,
                       "UDA1380 failed to mute\n");
    }
    else {
        /* Analog mixer  (AVC) */
        data[0] = 0x03;
        data[1] = (CARD8) ((t->analog_mixer_settings >> 8) & 0x3f);
        data[2] = (CARD8) (t->analog_mixer_settings & 0x3f);
        ret = I2C_WriteRead(&(t->d), data, 3, NULL, 0);
        if (ret == FALSE)
            xf86DrvMsg(t->d.pI2CBus->scrnIndex, X_INFO,
                       "UDA1380 failed to unmute\n");
    }
}

void
uda1380_getstatus(UDA1380Ptr t)
{
}

void
uda1380_setparameters(UDA1380Ptr t)
{
}

void
uda1380_dumpstatus(UDA1380Ptr t)
{
}