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-rw-r--r--sound/oss/pas2_mixer.c336
1 files changed, 336 insertions, 0 deletions
diff --git a/sound/oss/pas2_mixer.c b/sound/oss/pas2_mixer.c
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+++ b/sound/oss/pas2_mixer.c
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+
+/*
+ * sound/pas2_mixer.c
+ *
+ * Mixer routines for the Pro Audio Spectrum cards.
+ */
+
+/*
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
+ * Version 2 (June 1991). See the "COPYING" file distributed with this software
+ * for more info.
+ */
+/*
+ * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
+ * Bartlomiej Zolnierkiewicz : added __init to pas_init_mixer()
+ */
+#include <linux/init.h>
+#include "sound_config.h"
+
+#include "pas2.h"
+
+#ifndef DEB
+#define DEB(what) /* (what) */
+#endif
+
+extern int pas_translate_code;
+extern char pas_model;
+extern int *pas_osp;
+extern int pas_audiodev;
+
+static int rec_devices = (SOUND_MASK_MIC); /* Default recording source */
+static int mode_control;
+
+#define POSSIBLE_RECORDING_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
+ SOUND_MASK_CD | SOUND_MASK_ALTPCM)
+
+#define SUPPORTED_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
+ SOUND_MASK_CD | SOUND_MASK_ALTPCM | SOUND_MASK_IMIX | \
+ SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_RECLEV)
+
+static int *levels;
+
+static int default_levels[32] =
+{
+ 0x3232, /* Master Volume */
+ 0x3232, /* Bass */
+ 0x3232, /* Treble */
+ 0x5050, /* FM */
+ 0x4b4b, /* PCM */
+ 0x3232, /* PC Speaker */
+ 0x4b4b, /* Ext Line */
+ 0x4b4b, /* Mic */
+ 0x4b4b, /* CD */
+ 0x6464, /* Recording monitor */
+ 0x4b4b, /* SB PCM */
+ 0x6464 /* Recording level */
+};
+
+void
+mix_write(unsigned char data, int ioaddr)
+{
+ /*
+ * The Revision D cards have a problem with their MVA508 interface. The
+ * kludge-o-rama fix is to make a 16-bit quantity with identical LSB and
+ * MSBs out of the output byte and to do a 16-bit out to the mixer port -
+ * 1. We need to do this because it isn't timing problem but chip access
+ * sequence problem.
+ */
+
+ if (pas_model == 4)
+ {
+ outw(data | (data << 8), (ioaddr + pas_translate_code) - 1);
+ outb((0x80), 0);
+ } else
+ pas_write(data, ioaddr);
+}
+
+static int
+mixer_output(int right_vol, int left_vol, int div, int bits,
+ int mixer) /* Input or output mixer */
+{
+ int left = left_vol * div / 100;
+ int right = right_vol * div / 100;
+
+
+ if (bits & 0x10)
+ {
+ left |= mixer;
+ right |= mixer;
+ }
+ if (bits == 0x03 || bits == 0x04)
+ {
+ mix_write(0x80 | bits, 0x078B);
+ mix_write(left, 0x078B);
+ right_vol = left_vol;
+ } else
+ {
+ mix_write(0x80 | 0x20 | bits, 0x078B);
+ mix_write(left, 0x078B);
+ mix_write(0x80 | 0x40 | bits, 0x078B);
+ mix_write(right, 0x078B);
+ }
+
+ return (left_vol | (right_vol << 8));
+}
+
+static void
+set_mode(int new_mode)
+{
+ mix_write(0x80 | 0x05, 0x078B);
+ mix_write(new_mode, 0x078B);
+
+ mode_control = new_mode;
+}
+
+static int
+pas_mixer_set(int whichDev, unsigned int level)
+{
+ int left, right, devmask, changed, i, mixer = 0;
+
+ DEB(printk("static int pas_mixer_set(int whichDev = %d, unsigned int level = %X)\n", whichDev, level));
+
+ left = level & 0x7f;
+ right = (level & 0x7f00) >> 8;
+
+ if (whichDev < SOUND_MIXER_NRDEVICES) {
+ if ((1 << whichDev) & rec_devices)
+ mixer = 0x20;
+ else
+ mixer = 0x00;
+ }
+
+ switch (whichDev)
+ {
+ case SOUND_MIXER_VOLUME: /* Master volume (0-63) */
+ levels[whichDev] = mixer_output(right, left, 63, 0x01, 0);
+ break;
+
+ /*
+ * Note! Bass and Treble are mono devices. Will use just the left
+ * channel.
+ */
+ case SOUND_MIXER_BASS: /* Bass (0-12) */
+ levels[whichDev] = mixer_output(right, left, 12, 0x03, 0);
+ break;
+ case SOUND_MIXER_TREBLE: /* Treble (0-12) */
+ levels[whichDev] = mixer_output(right, left, 12, 0x04, 0);
+ break;
+
+ case SOUND_MIXER_SYNTH: /* Internal synthesizer (0-31) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x00, mixer);
+ break;
+ case SOUND_MIXER_PCM: /* PAS PCM (0-31) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x05, mixer);
+ break;
+ case SOUND_MIXER_ALTPCM: /* SB PCM (0-31) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x07, mixer);
+ break;
+ case SOUND_MIXER_SPEAKER: /* PC speaker (0-31) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x06, mixer);
+ break;
+ case SOUND_MIXER_LINE: /* External line (0-31) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x02, mixer);
+ break;
+ case SOUND_MIXER_CD: /* CD (0-31) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x03, mixer);
+ break;
+ case SOUND_MIXER_MIC: /* External microphone (0-31) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x04, mixer);
+ break;
+ case SOUND_MIXER_IMIX: /* Recording monitor (0-31) (Output mixer only) */
+ levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x01,
+ 0x00);
+ break;
+ case SOUND_MIXER_RECLEV: /* Recording level (0-15) */
+ levels[whichDev] = mixer_output(right, left, 15, 0x02, 0);
+ break;
+
+
+ case SOUND_MIXER_RECSRC:
+ devmask = level & POSSIBLE_RECORDING_DEVICES;
+
+ changed = devmask ^ rec_devices;
+ rec_devices = devmask;
+
+ for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
+ if (changed & (1 << i))
+ {
+ pas_mixer_set(i, levels[i]);
+ }
+ return rec_devices;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return (levels[whichDev]);
+}
+
+/*****/
+
+static void
+pas_mixer_reset(void)
+{
+ int foo;
+
+ DEB(printk("pas2_mixer.c: void pas_mixer_reset(void)\n"));
+
+ for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
+ pas_mixer_set(foo, levels[foo]);
+
+ set_mode(0x04 | 0x01);
+}
+
+static int pas_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
+{
+ int level,v ;
+ int __user *p = (int __user *)arg;
+
+ DEB(printk("pas2_mixer.c: int pas_mixer_ioctl(unsigned int cmd = %X, unsigned int arg = %X)\n", cmd, arg));
+ if (cmd == SOUND_MIXER_PRIVATE1) { /* Set loudness bit */
+ if (get_user(level, p))
+ return -EFAULT;
+ if (level == -1) /* Return current settings */
+ level = (mode_control & 0x04);
+ else {
+ mode_control &= ~0x04;
+ if (level)
+ mode_control |= 0x04;
+ set_mode(mode_control);
+ }
+ level = !!level;
+ return put_user(level, p);
+ }
+ if (cmd == SOUND_MIXER_PRIVATE2) { /* Set enhance bit */
+ if (get_user(level, p))
+ return -EFAULT;
+ if (level == -1) { /* Return current settings */
+ if (!(mode_control & 0x03))
+ level = 0;
+ else
+ level = ((mode_control & 0x03) + 1) * 20;
+ } else {
+ int i = 0;
+
+ level &= 0x7f;
+ if (level)
+ i = (level / 20) - 1;
+ mode_control &= ~0x03;
+ mode_control |= i & 0x03;
+ set_mode(mode_control);
+ if (i)
+ i = (i + 1) * 20;
+ level = i;
+ }
+ return put_user(level, p);
+ }
+ if (cmd == SOUND_MIXER_PRIVATE3) { /* Set mute bit */
+ if (get_user(level, p))
+ return -EFAULT;
+ if (level == -1) /* Return current settings */
+ level = !(pas_read(0x0B8A) & 0x20);
+ else {
+ if (level)
+ pas_write(pas_read(0x0B8A) & (~0x20), 0x0B8A);
+ else
+ pas_write(pas_read(0x0B8A) | 0x20, 0x0B8A);
+
+ level = !(pas_read(0x0B8A) & 0x20);
+ }
+ return put_user(level, p);
+ }
+ if (((cmd >> 8) & 0xff) == 'M') {
+ if (get_user(v, p))
+ return -EFAULT;
+ if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
+ v = pas_mixer_set(cmd & 0xff, v);
+ } else {
+ switch (cmd & 0xff) {
+ case SOUND_MIXER_RECSRC:
+ v = rec_devices;
+ break;
+
+ case SOUND_MIXER_STEREODEVS:
+ v = SUPPORTED_MIXER_DEVICES & ~(SOUND_MASK_BASS | SOUND_MASK_TREBLE);
+ break;
+
+ case SOUND_MIXER_DEVMASK:
+ v = SUPPORTED_MIXER_DEVICES;
+ break;
+
+ case SOUND_MIXER_RECMASK:
+ v = POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES;
+ break;
+
+ case SOUND_MIXER_CAPS:
+ v = 0; /* No special capabilities */
+ break;
+
+ default:
+ v = levels[cmd & 0xff];
+ break;
+ }
+ }
+ return put_user(v, p);
+ }
+ return -EINVAL;
+}
+
+static struct mixer_operations pas_mixer_operations =
+{
+ .owner = THIS_MODULE,
+ .id = "PAS16",
+ .name = "Pro Audio Spectrum 16",
+ .ioctl = pas_mixer_ioctl
+};
+
+int __init
+pas_init_mixer(void)
+{
+ int d;
+
+ levels = load_mixer_volumes("PAS16_1", default_levels, 1);
+
+ pas_mixer_reset();
+
+ if ((d = sound_alloc_mixerdev()) != -1)
+ {
+ audio_devs[pas_audiodev]->mixer_dev = d;
+ mixer_devs[d] = &pas_mixer_operations;
+ }
+ return 1;
+}
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