1 files changed, 711 insertions, 0 deletions

diff --git a/sound/oss/aci.c b/sound/oss/aci.c
new file mode 100644
index 000000000000..3928c2802cc4
--- /dev/null
+++ b/sound/oss/aci.c
@@ -0,0 +1,711 @@
+/*
+ * Audio Command Interface (ACI) driver (sound/aci.c)
+ *
+ * ACI is a protocol used to communicate with the microcontroller on
+ * some sound cards produced by miro, e.g. the miroSOUND PCM12 and
+ * PCM20. The ACI has been developed for miro by Norberto Pellicci
+ * <pellicci@home.com>. Special thanks to both him and miro for
+ * providing the ACI specification.
+ *
+ * The main function of the ACI is to control the mixer and to get a
+ * product identification. On the PCM20, ACI also controls the radio
+ * tuner on this card, this is supported in the Video for Linux 
+ * miropcm20 driver.
+ * -
+ * This is a fullfeatured implementation. Unsupported features
+ * are bugs... (:
+ *
+ * It is not longer necessary to load the mad16 module first. The
+ * user is currently responsible to set the mad16 mixer correctly.
+ *
+ * To toggle the solo mode for full duplex operation just use the OSS
+ * record switch for the pcm ('wave') controller.           Robert
+ * -
+ *
+ * Revision history:
+ *
+ *   1995-11-10  Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de>
+ *        First version written.
+ *   1995-12-31  Markus Kuhn
+ *        Second revision, general code cleanup.
+ *   1996-05-16  Hannu Savolainen
+ *        Integrated with other parts of the driver.
+ *   1996-05-28  Markus Kuhn
+ *        Initialize CS4231A mixer, make ACI first mixer,
+ *        use new private mixer API for solo mode.
+ *   1998-08-18  Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl>
+ *        Small modification to export ACI functions and 
+ *        complete modularisation.
+ *   2000-06-20  Robert Siemer <Robert.Siemer@gmx.de>
+ *        Don't initialize the CS4231A mixer anymore, so the code is
+ *        working again, and other small changes to fit in todays
+ *        kernels.
+ *   2000-08-26  Robert Siemer
+ *        Clean up and rewrite for 2.4.x. Maybe it's SMP safe now... (:
+ *        ioctl bugfix, and integration of solo-mode into OSS-API,
+ *        added (OSS-limited) equalizer support, return value bugfix,
+ *        changed param aci_reset to reset, new params: ide, wss.
+ *   2001-04-20  Robert Siemer
+ *        even more cleanups...
+ *   2001-10-08  Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *        Get rid of check_region, .bss optimizations, use set_current_state
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h> 
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <asm/semaphore.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include "sound_config.h"
+
+int aci_port;   /* as determined by bit 4 in the OPTi 929 MC4 register */
+static int aci_idcode[2];       /* manufacturer and product ID */
+int aci_version;        /* ACI firmware version */
+
+EXPORT_SYMBOL(aci_port);
+EXPORT_SYMBOL(aci_version);
+
+#include "aci.h"
+
+
+static int aci_solo;    /* status bit of the card that can't be         *
+                         * checked with ACI versions prior to 0xb0      */
+static int aci_amp;   /* status bit for power-amp/line-out level
+                           but I have no docs about what is what... */
+static int aci_micpreamp=3; /* microphone preamp-level that can't be    *
+                         * checked with ACI versions prior to 0xb0      */
+
+static int mixer_device;
+static struct semaphore aci_sem;
+
+#ifdef MODULE
+static int reset;
+module_param(reset, bool, 0);
+MODULE_PARM_DESC(reset,"When set to 1, reset aci mixer.");
+#else
+static int reset = 1;
+#endif
+
+static int ide=-1;
+module_param(ide, int, 0);
+MODULE_PARM_DESC(ide,"1 enable, 0 disable ide-port - untested"
+                 " default: do nothing");
+static int wss=-1;
+module_param(wss, int, 0);
+MODULE_PARM_DESC(wss,"change between ACI/WSS-mixer; use 0 and 1 - untested"
+                 " default: do nothing; for PCM1-pro only");
+
+#ifdef DEBUG
+static void print_bits(unsigned char c)
+{
+        int j;
+        printk(KERN_DEBUG "aci: ");
+
+        for (j=7; j>=0; j--) {
+                printk("%d", (c >> j) & 0x1);
+        }
+
+        printk("\n");
+}
+#endif
+
+/*
+ * This busy wait code normally requires less than 15 loops and
+ * practically always less than 100 loops on my i486/DX2 66 MHz.
+ *
+ * Warning: Waiting on the general status flag after reseting the MUTE
+ * function can take a VERY long time, because the PCM12 does some kind
+ * of fade-in effect. For this reason, access to the MUTE function has
+ * not been implemented at all.
+ *
+ * - The OSS interface has no mute option. It takes about 3 seconds to
+ * fade-in on my PCM20. busy_wait() handles it great now...     Robert
+ */
+
+static int busy_wait(void)
+{
+        #define MINTIME 500
+        long timeout;
+        unsigned char byte;
+
+        for (timeout = 1; timeout <= MINTIME+30; timeout++) {
+                if (((byte=inb(BUSY_REGISTER)) & 1) == 0) {
+                        if (timeout >= MINTIME)
+                                printk(KERN_DEBUG "aci: Got READYFLAG in round %ld.\n", timeout-MINTIME);
+                        return byte;
+                }
+                if (timeout >= MINTIME) {
+                        long out=10*HZ;
+                        switch (timeout-MINTIME) {
+                        case 0 ... 9:
+                                out /= 10;
+                        case 10 ... 19:
+                                out /= 10;
+                        case 20 ... 30:
+                                out /= 10;
+                        default:
+                                set_current_state(TASK_UNINTERRUPTIBLE);
+                                schedule_timeout(out);
+                                break;
+                        }
+                }
+        }
+        printk(KERN_WARNING "aci: busy_wait() time out.\n");
+        return -EBUSY;
+}
+
+/* The four ACI command types are fucked up. [-:
+ * implied is: 1w      - special case for INIT
+ * write   is: 2w1r
+ * read    is: x(1w1r) where x is 1 or 2 (1 CHECK_SIG, 1 CHECK_STER,
+ *                                        1 VERSION, 2 IDCODE)
+ *  the command is only in the first write, rest is protocol overhead
+ *
+ * indexed is technically a write and used for STATUS
+ * and the special case for TUNE is: 3w1r
+ * 
+ * Here the new general sheme: TUNE --> aci_rw_cmd(x,  y,  z)
+ *                indexed and write --> aci_rw_cmd(x,  y, -1)
+ *           implied and read (x=1) --> aci_rw_cmd(x, -1, -1)
+ *
+ * Read (x>=2) is not implemented (only used during initialization).
+ * Use aci_idcode[2] and aci_version...                    Robert
+ */
+
+/* Some notes for error detection: theoretically it is possible.
+ * But it doubles the I/O-traffic from ww(r) to wwwrw(r) in the normal 
+ * case and doesn't seem to be designed for that...        Robert
+ */
+
+static inline int aci_rawwrite(unsigned char byte)
+{
+        if (busy_wait() >= 0) {
+#ifdef DEBUG
+                printk(KERN_DEBUG "aci_rawwrite(%d)\n", byte);
+#endif
+                outb(byte, COMMAND_REGISTER);
+                return 0;
+        } else
+                return -EBUSY;
+}
+
+static inline int aci_rawread(void)
+{
+        unsigned char byte;
+
+        if (busy_wait() >= 0) {
+                byte=inb(STATUS_REGISTER);
+#ifdef DEBUG
+                printk(KERN_DEBUG "%d = aci_rawread()\n", byte);
+#endif
+                return byte;
+        } else
+                return -EBUSY;
+}
+
+
+int aci_rw_cmd(int write1, int write2, int write3)
+{
+        int write[] = {write1, write2, write3};
+        int read = -EINTR, i;
+
+        if (down_interruptible(&aci_sem))
+                goto out;
+
+        for (i=0; i<3; i++) {
+                if (write[i]< 0 || write[i] > 255)
+                        break;
+                else {
+                        read = aci_rawwrite(write[i]);
+                        if (read < 0)
+                                goto out_up;
+                }
+                
+        }
+        
+        read = aci_rawread();
+out_up: up(&aci_sem);
+out:    return read;
+}
+
+EXPORT_SYMBOL(aci_rw_cmd);
+
+static int setvolume(int __user *arg, 
+                     unsigned char left_index, unsigned char right_index)
+{
+        int vol, ret, uservol, buf;
+
+        __get_user(uservol, arg);
+
+        /* left channel */
+        vol = uservol & 0xff;
+        if (vol > 100)
+                vol = 100;
+        vol = SCALE(100, 0x20, vol);
+        if ((buf=aci_write_cmd(left_index, 0x20 - vol))<0)
+                return buf;
+        ret = SCALE(0x20, 100, vol);
+
+
+        /* right channel */
+        vol = (uservol >> 8) & 0xff;
+        if (vol > 100)
+                vol = 100;
+        vol = SCALE(100, 0x20, vol);
+        if ((buf=aci_write_cmd(right_index, 0x20 - vol))<0)
+                return buf;
+        ret |= SCALE(0x20, 100, vol) << 8;
+ 
+        __put_user(ret, arg);
+
+        return 0;
+}
+
+static int getvolume(int __user *arg,
+                     unsigned char left_index, unsigned char right_index)
+{
+        int vol;
+        int buf;
+
+        /* left channel */
+        if ((buf=aci_indexed_cmd(ACI_STATUS, left_index))<0)
+                return buf;
+        vol = SCALE(0x20, 100, buf < 0x20 ? 0x20-buf : 0);
+        
+        /* right channel */
+        if ((buf=aci_indexed_cmd(ACI_STATUS, right_index))<0)
+                return buf;
+        vol |= SCALE(0x20, 100, buf < 0x20 ? 0x20-buf : 0) << 8;
+
+        __put_user(vol, arg);
+
+        return 0;
+}
+
+
+/* The equalizer is somewhat strange on the ACI. From -12dB to +12dB
+ * write:  0xff..down.to..0x80==0x00..up.to..0x7f
+ */
+
+static inline unsigned int eq_oss2aci(unsigned int vol)
+{
+        int boost=0;
+        unsigned int ret;
+
+        if (vol > 100)
+                vol = 100;
+        if (vol > 50) {
+                vol -= 51;
+                boost=1;
+        }
+        if (boost)
+                ret=SCALE(49, 0x7e, vol)+1;
+        else
+                ret=0xff - SCALE(50, 0x7f, vol);
+        return ret;
+}
+
+static inline unsigned int eq_aci2oss(unsigned int vol)
+{
+        if (vol < 0x80)
+                return SCALE(0x7f, 50, vol) + 50;
+        else
+                return SCALE(0x7f, 50, 0xff-vol);
+}
+
+
+static int setequalizer(int __user *arg, 
+                        unsigned char left_index, unsigned char right_index)
+{
+        int buf;
+        unsigned int vol;
+
+        __get_user(vol, arg);
+
+        /* left channel */
+        if ((buf=aci_write_cmd(left_index, eq_oss2aci(vol & 0xff)))<0)
+                return buf;
+
+        /* right channel */
+        if ((buf=aci_write_cmd(right_index, eq_oss2aci((vol>>8) & 0xff)))<0)
+                return buf;
+
+        /* the ACI equalizer is more precise */
+        return 0;
+}
+
+static int getequalizer(int __user *arg,
+                        unsigned char left_index, unsigned char right_index)
+{
+        int buf;
+        unsigned int vol;
+
+        /* left channel */
+        if ((buf=aci_indexed_cmd(ACI_STATUS, left_index))<0)
+                return buf;
+        vol = eq_aci2oss(buf);
+        
+        /* right channel */
+        if ((buf=aci_indexed_cmd(ACI_STATUS, right_index))<0)
+                return buf;
+        vol |= eq_aci2oss(buf) << 8;
+
+        __put_user(vol, arg);
+
+        return 0;
+}
+
+static int aci_mixer_ioctl (int dev, unsigned int cmd, void __user * arg)
+{
+        int vol, buf;
+        int __user *p = arg;
+
+        switch (cmd) {
+        case SOUND_MIXER_WRITE_VOLUME:
+                return setvolume(p, 0x01, 0x00);
+        case SOUND_MIXER_WRITE_CD:
+                return setvolume(p, 0x3c, 0x34);
+        case SOUND_MIXER_WRITE_MIC:
+                return setvolume(p, 0x38, 0x30);
+        case SOUND_MIXER_WRITE_LINE:
+                return setvolume(p, 0x39, 0x31);
+        case SOUND_MIXER_WRITE_SYNTH:
+                return setvolume(p, 0x3b, 0x33);
+        case SOUND_MIXER_WRITE_PCM:
+                return setvolume(p, 0x3a, 0x32);
+        case MIXER_WRITE(SOUND_MIXER_RADIO): /* fall through */
+        case SOUND_MIXER_WRITE_LINE1:  /* AUX1 or radio */
+                return setvolume(p, 0x3d, 0x35);
+        case SOUND_MIXER_WRITE_LINE2:  /* AUX2 */
+                return setvolume(p, 0x3e, 0x36);
+        case SOUND_MIXER_WRITE_BASS:   /* set band one and two */
+                if (aci_idcode[1]=='C') {
+                        if ((buf=setequalizer(p, 0x48, 0x40)) || 
+                            (buf=setequalizer(p, 0x49, 0x41)));
+                        return buf;
+                }
+                break;
+        case SOUND_MIXER_WRITE_TREBLE: /* set band six and seven */
+                if (aci_idcode[1]=='C') {
+                        if ((buf=setequalizer(p, 0x4d, 0x45)) || 
+                            (buf=setequalizer(p, 0x4e, 0x46)));
+                        return buf;
+                }
+                break;
+        case SOUND_MIXER_WRITE_IGAIN:  /* MIC pre-amp */
+                if (aci_idcode[1]=='B' || aci_idcode[1]=='C') {
+                        __get_user(vol, p);
+                        vol = vol & 0xff;
+                        if (vol > 100)
+                                vol = 100;
+                        vol = SCALE(100, 3, vol);
+                        if ((buf=aci_write_cmd(ACI_WRITE_IGAIN, vol))<0)
+                                return buf;
+                        aci_micpreamp = vol;
+                        vol = SCALE(3, 100, vol);
+                        vol |= (vol << 8);
+                        __put_user(vol, p);
+                        return 0;
+                }
+                break;
+        case SOUND_MIXER_WRITE_OGAIN:  /* Power-amp/line-out level */
+                if (aci_idcode[1]=='A' || aci_idcode[1]=='B') {
+                        __get_user(buf, p);
+                        buf = buf & 0xff;
+                        if (buf > 50)
+                                vol = 1;
+                        else
+                                vol = 0;
+                        if ((buf=aci_write_cmd(ACI_SET_POWERAMP, vol))<0)
+                                return buf;
+                        aci_amp = vol;
+                        if (aci_amp)
+                                buf = (100 || 100<<8);
+                        else
+                                buf = 0;
+                        __put_user(buf, p);
+                        return 0;
+                }
+                break;
+        case SOUND_MIXER_WRITE_RECSRC:
+                /* handle solo mode control */
+                __get_user(buf, p);
+                /* unset solo when RECSRC for PCM is requested */
+                if (aci_idcode[1]=='B' || aci_idcode[1]=='C') {
+                        vol = !(buf & SOUND_MASK_PCM);
+                        if ((buf=aci_write_cmd(ACI_SET_SOLOMODE, vol))<0)
+                                return buf;
+                        aci_solo = vol;
+                }
+                buf = (SOUND_MASK_CD| SOUND_MASK_MIC| SOUND_MASK_LINE|
+                       SOUND_MASK_SYNTH| SOUND_MASK_LINE2);
+                if (aci_idcode[1] == 'C') /* PCM20 radio */
+                        buf |= SOUND_MASK_RADIO;
+                else
+                        buf |= SOUND_MASK_LINE1;
+                if (!aci_solo)
+                        buf |= SOUND_MASK_PCM;
+                __put_user(buf, p);
+                return 0;
+        case SOUND_MIXER_READ_DEVMASK:
+                buf = (SOUND_MASK_VOLUME | SOUND_MASK_CD    |
+                       SOUND_MASK_MIC    | SOUND_MASK_LINE  |
+                       SOUND_MASK_SYNTH  | SOUND_MASK_PCM   |
+                       SOUND_MASK_LINE2);
+                switch (aci_idcode[1]) {
+                case 'C': /* PCM20 radio */
+                        buf |= (SOUND_MASK_RADIO | SOUND_MASK_IGAIN |
+                                SOUND_MASK_BASS  | SOUND_MASK_TREBLE);
+                        break;
+                case 'B': /* PCM12 */
+                        buf |= (SOUND_MASK_LINE1 | SOUND_MASK_IGAIN |
+                                SOUND_MASK_OGAIN);
+                        break;
+                case 'A': /* PCM1-pro */
+                        buf |= (SOUND_MASK_LINE1 | SOUND_MASK_OGAIN);
+                        break;
+                default:
+                        buf |= SOUND_MASK_LINE1;
+                }
+                __put_user(buf, p);
+                return 0;
+        case SOUND_MIXER_READ_STEREODEVS:
+                buf = (SOUND_MASK_VOLUME | SOUND_MASK_CD    |
+                       SOUND_MASK_MIC    | SOUND_MASK_LINE  |
+                       SOUND_MASK_SYNTH  | SOUND_MASK_PCM   |
+                       SOUND_MASK_LINE2);
+                switch (aci_idcode[1]) {
+                case 'C': /* PCM20 radio */
+                        buf |= (SOUND_MASK_RADIO |
+                                SOUND_MASK_BASS  | SOUND_MASK_TREBLE);
+                        break;
+                default:
+                        buf |= SOUND_MASK_LINE1;
+                }
+                __put_user(buf, p);
+                return 0;
+        case SOUND_MIXER_READ_RECMASK:
+                buf = (SOUND_MASK_CD| SOUND_MASK_MIC| SOUND_MASK_LINE|
+                       SOUND_MASK_SYNTH| SOUND_MASK_LINE2| SOUND_MASK_PCM);
+                if (aci_idcode[1] == 'C') /* PCM20 radio */
+                        buf |= SOUND_MASK_RADIO;
+                else
+                        buf |= SOUND_MASK_LINE1;
+
+                __put_user(buf, p);
+                return 0;
+        case SOUND_MIXER_READ_RECSRC:
+                buf = (SOUND_MASK_CD    | SOUND_MASK_MIC   | SOUND_MASK_LINE  |
+                       SOUND_MASK_SYNTH | SOUND_MASK_LINE2);
+                /* do we need aci_solo or can I get it from the ACI? */
+                switch (aci_idcode[1]) {
+                case 'B': /* PCM12 */
+                case 'C': /* PCM20 radio */
+                        if (aci_version >= 0xb0) {
+                                if ((vol=aci_rw_cmd(ACI_STATUS,
+                                                    ACI_S_GENERAL, -1))<0)
+                                        return vol;
+                                if (vol & 0x20)
+                                        buf |= SOUND_MASK_PCM;
+                        }
+                        else
+                                if (!aci_solo)
+                                        buf |= SOUND_MASK_PCM;
+                        break;
+                default:
+                        buf |= SOUND_MASK_PCM;
+                }
+                if (aci_idcode[1] == 'C') /* PCM20 radio */
+                        buf |= SOUND_MASK_RADIO;
+                else
+                        buf |= SOUND_MASK_LINE1;
+
+                __put_user(buf, p);
+                return 0;
+        case SOUND_MIXER_READ_CAPS:
+                __put_user(0, p);
+                return 0;
+        case SOUND_MIXER_READ_VOLUME:
+                return getvolume(p, 0x04, 0x03);
+        case SOUND_MIXER_READ_CD:
+                return getvolume(p, 0x0a, 0x09);
+        case SOUND_MIXER_READ_MIC:
+                return getvolume(p, 0x06, 0x05);
+        case SOUND_MIXER_READ_LINE:
+                return getvolume(p, 0x08, 0x07);
+        case SOUND_MIXER_READ_SYNTH:
+                return getvolume(p, 0x0c, 0x0b);
+        case SOUND_MIXER_READ_PCM:
+                return getvolume(p, 0x0e, 0x0d);
+        case MIXER_READ(SOUND_MIXER_RADIO): /* fall through */
+        case SOUND_MIXER_READ_LINE1:  /* AUX1 */
+                return getvolume(p, 0x11, 0x10);
+        case SOUND_MIXER_READ_LINE2:  /* AUX2 */
+                return getvolume(p, 0x13, 0x12);
+        case SOUND_MIXER_READ_BASS:   /* get band one */
+                if (aci_idcode[1]=='C') {
+                        return getequalizer(p, 0x23, 0x22);
+                }
+                break;
+        case SOUND_MIXER_READ_TREBLE: /* get band seven */
+                if (aci_idcode[1]=='C') {
+                        return getequalizer(p, 0x2f, 0x2e);
+                }
+                break;
+        case SOUND_MIXER_READ_IGAIN:  /* MIC pre-amp */
+                if (aci_idcode[1]=='B' || aci_idcode[1]=='C') {
+                        /* aci_micpreamp or ACI? */
+                        if (aci_version >= 0xb0) {
+                                if ((buf=aci_indexed_cmd(ACI_STATUS,
+                                                         ACI_S_READ_IGAIN))<0)
+                                        return buf;
+                        }
+                        else
+                                buf=aci_micpreamp;
+                        vol = SCALE(3, 100, buf <= 3 ? buf : 3);
+                        vol |= vol << 8;
+                        __put_user(vol, p);
+                        return 0;
+                }
+                break;
+        case SOUND_MIXER_READ_OGAIN:
+                if (aci_amp)
+                        buf = (100 || 100<<8);
+                else
+                        buf = 0;
+                __put_user(buf, p);
+                return 0;
+        }
+        return -EINVAL;
+}
+
+static struct mixer_operations aci_mixer_operations =
+{
+        .owner = THIS_MODULE,
+        .id    = "ACI",
+        .ioctl = aci_mixer_ioctl
+};
+
+/*
+ * There is also an internal mixer in the codec (CS4231A or AD1845),
+ * that deserves no purpose in an ACI based system which uses an
+ * external ACI controlled stereo mixer. Make sure that this codec
+ * mixer has the AUX1 input selected as the recording source, that the
+ * input gain is set near maximum and that the other channels going
+ * from the inputs to the codec output are muted.
+ */
+
+static int __init attach_aci(void)
+{
+        char *boardname;
+        int i, rc = -EBUSY;
+
+        init_MUTEX(&aci_sem);
+
+        outb(0xE3, 0xf8f); /* Write MAD16 password */
+        aci_port = (inb(0xf90) & 0x10) ?
+                0x344: 0x354; /* Get aci_port from MC4_PORT */
+
+        if (!request_region(aci_port, 3, "sound mixer (ACI)")) {
+                printk(KERN_NOTICE
+                       "aci: I/O area 0x%03x-0x%03x already used.\n",
+                       aci_port, aci_port+2);
+                goto out;
+        }
+
+        /* force ACI into a known state */
+        rc = -EFAULT;
+        for (i=0; i<3; i++)
+                if (aci_rw_cmd(ACI_ERROR_OP, -1, -1)<0)
+                        goto out_release_region;
+
+        /* official this is one aci read call: */
+        rc = -EFAULT;
+        if ((aci_idcode[0]=aci_rw_cmd(ACI_READ_IDCODE, -1, -1))<0 ||
+            (aci_idcode[1]=aci_rw_cmd(ACI_READ_IDCODE, -1, -1))<0) {
+                printk(KERN_ERR "aci: Failed to read idcode on 0x%03x.\n",
+                       aci_port);
+                goto out_release_region;
+        }
+
+        if ((aci_version=aci_rw_cmd(ACI_READ_VERSION, -1, -1))<0) {
+                printk(KERN_ERR "aci: Failed to read version on 0x%03x.\n",
+                       aci_port);
+                goto out_release_region;
+        }
+
+        if (aci_idcode[0] == 'm') {
+                /* It looks like a miro sound card. */
+                switch (aci_idcode[1]) {
+                case 'A':
+                        boardname = "PCM1 pro / early PCM12";
+                        break;
+                case 'B':
+                        boardname = "PCM12";
+                        break;
+                case 'C':
+                        boardname = "PCM20 radio";
+                        break;
+                default:
+                        boardname = "unknown miro";
+                }
+        } else {
+                printk(KERN_WARNING "aci: Warning: unsupported card! - "
+                       "no hardware, no specs...\n");
+                boardname = "unknown Cardinal Technologies";
+        }
+
+        printk(KERN_INFO "<ACI 0x%02x, id %02x/%02x \"%c/%c\", (%s)> at 0x%03x\n",
+               aci_version,
+               aci_idcode[0], aci_idcode[1],
+               aci_idcode[0], aci_idcode[1],
+               boardname, aci_port);
+
+        rc = -EBUSY;
+        if (reset) {
+                /* first write()s after reset fail with my PCM20 */
+                if (aci_rw_cmd(ACI_INIT, -1, -1)<0 ||
+                    aci_rw_cmd(ACI_ERROR_OP, ACI_ERROR_OP, ACI_ERROR_OP)<0 ||
+                    aci_rw_cmd(ACI_ERROR_OP, ACI_ERROR_OP, ACI_ERROR_OP)<0)
+                        goto out_release_region;
+        }
+
+        /* the PCM20 is muted after reset (and reboot) */
+        if (aci_rw_cmd(ACI_SET_MUTE, 0x00, -1)<0)
+                goto out_release_region;
+
+        if (ide>=0)
+                if (aci_rw_cmd(ACI_SET_IDE, !ide, -1)<0)
+                        goto out_release_region;
+        
+        if (wss>=0 && aci_idcode[1]=='A')
+                if (aci_rw_cmd(ACI_SET_WSS, !!wss, -1)<0)
+                        goto out_release_region;
+
+        mixer_device = sound_install_mixer(MIXER_DRIVER_VERSION, boardname,
+                                           &aci_mixer_operations,
+                                           sizeof(aci_mixer_operations), NULL);
+        rc = 0;
+        if (mixer_device < 0) {
+                printk(KERN_ERR "aci: Failed to install mixer.\n");
+                rc = mixer_device;
+                goto out_release_region;
+        } /* else Maybe initialize the CS4231A mixer here... */
+out:    return rc;
+out_release_region:
+        release_region(aci_port, 3);
+        goto out;
+}
+
+static void __exit unload_aci(void)
+{
+        sound_unload_mixerdev(mixer_device);
+        release_region(aci_port, 3);
+}
+
+module_init(attach_aci);
+module_exit(unload_aci);
+MODULE_LICENSE("GPL");