a0f70ac053
deltas, but it is possible since I had a few merge conflicts over the last few days while this has been sitting ready to go. (Part 1 was committed to the config files, but cvs aborted grrr..) Approved by: core
234 lines
5.6 KiB
C
234 lines
5.6 KiB
C
/*
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* sound/ics2101.c
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*
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* Driver for the ICS2101 mixer of GUS v3.7.
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*
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* Copyright by Hannu Savolainen 1994
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <i386/isa/sound/sound_config.h>
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#if defined(CONFIG_GUS)
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#include <i386/isa/sound/ultrasound.h>
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#include <i386/isa/sound/gus_hw.h>
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#define MIX_DEVS (SOUND_MASK_MIC|SOUND_MASK_LINE| \
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SOUND_MASK_SYNTH| \
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SOUND_MASK_CD | SOUND_MASK_VOLUME)
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extern sound_os_info *gus_osp;
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extern int gus_base;
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static int volumes[ICS_MIXDEVS];
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static int left_fix[ICS_MIXDEVS] = {1, 1, 1, 2, 1, 2};
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static int right_fix[ICS_MIXDEVS] = {2, 2, 2, 1, 2, 1};
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static int
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scale_vol(int vol)
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{
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/*
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* Experimental volume scaling by Risto Kankkunen. This should give
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* smoother volume response than just a plain multiplication.
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*/
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int e;
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RANGE(vol, 0, 100);
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vol = (31 * vol + 50) / 100;
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e = 0;
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if (vol) {
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while (vol < 16) {
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vol <<= 1;
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e--;
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}
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vol -= 16;
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e += 7;
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}
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return ((e << 4) + vol);
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}
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static void
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write_mix(int dev, int chn, int vol)
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{
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int *selector;
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unsigned long flags;
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int ctrl_addr = dev << 3;
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int attn_addr = dev << 3;
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vol = scale_vol(vol);
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if (chn == CHN_LEFT) {
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selector = left_fix;
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ctrl_addr |= 0x00;
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attn_addr |= 0x02;
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} else {
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selector = right_fix;
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ctrl_addr |= 0x01;
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attn_addr |= 0x03;
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}
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flags = splhigh();
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outb(u_MixSelect, ctrl_addr);
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outb(u_MixData, selector[dev]);
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outb(u_MixSelect, attn_addr);
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outb(u_MixData, (unsigned char) vol);
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splx(flags);
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}
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static int
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set_volumes(int dev, int vol)
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{
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int left = vol & 0x00ff;
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int right = (vol >> 8) & 0x00ff;
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RANGE (left, 0, 100);
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RANGE (right, 0, 100);
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write_mix(dev, CHN_LEFT, left);
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write_mix(dev, CHN_RIGHT, right);
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vol = left + (right << 8);
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volumes[dev] = vol;
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return vol;
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}
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static int
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ics2101_mixer_ioctl(int dev, unsigned int cmd, ioctl_arg arg)
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{
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if (((cmd >> 8) & 0xff) == 'M') {
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if (cmd & IOC_IN)
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switch (cmd & 0xff) {
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case SOUND_MIXER_RECSRC:
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return gus_default_mixer_ioctl(dev, cmd, arg);
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break;
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case SOUND_MIXER_MIC:
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return *(int *) arg = set_volumes(DEV_MIC, (*(int *) arg));
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break;
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case SOUND_MIXER_CD:
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return *(int *) arg = set_volumes(DEV_CD, (*(int *) arg));
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break;
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case SOUND_MIXER_LINE:
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return *(int *) arg = set_volumes(DEV_LINE, (*(int *) arg));
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break;
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case SOUND_MIXER_SYNTH:
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return *(int *) arg = set_volumes(DEV_GF1, (*(int *) arg));
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break;
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case SOUND_MIXER_VOLUME:
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return *(int *) arg = set_volumes(DEV_VOL, (*(int *) arg));
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break;
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default:
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return -(EINVAL);
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}
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else
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switch (cmd & 0xff) { /* Return parameters */
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case SOUND_MIXER_RECSRC:
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return gus_default_mixer_ioctl(dev, cmd, arg);
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break;
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case SOUND_MIXER_DEVMASK:
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return *(int *) arg = MIX_DEVS;
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break;
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case SOUND_MIXER_STEREODEVS:
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return *(int *) arg = SOUND_MASK_LINE | SOUND_MASK_CD |
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SOUND_MASK_SYNTH | SOUND_MASK_VOLUME | SOUND_MASK_MIC;
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break;
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case SOUND_MIXER_RECMASK:
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return *(int *) arg = SOUND_MASK_MIC | SOUND_MASK_LINE;
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break;
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case SOUND_MIXER_CAPS:
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return *(int *) arg = 0;
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break;
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case SOUND_MIXER_MIC:
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return *(int *) arg = volumes[DEV_MIC];
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break;
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case SOUND_MIXER_LINE:
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return *(int *) arg = volumes[DEV_LINE];
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break;
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case SOUND_MIXER_CD:
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return *(int *) arg = volumes[DEV_CD];
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break;
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case SOUND_MIXER_VOLUME:
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return *(int *) arg = volumes[DEV_VOL];
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break;
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case SOUND_MIXER_SYNTH:
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return *(int *) arg = volumes[DEV_GF1];
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break;
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default:
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return -(EINVAL);
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}
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}
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return -(EINVAL);
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}
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static struct mixer_operations ics2101_mixer_operations =
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{
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"ICS2101 Multimedia Mixer",
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ics2101_mixer_ioctl
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};
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void
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ics2101_mixer_init()
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{
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int i;
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if (num_mixers < MAX_MIXER_DEV) {
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mixer_devs[num_mixers++] = &ics2101_mixer_operations;
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/*
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* Some GUS v3.7 cards had some channels flipped. Disable the
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* flipping feature if the model id is other than 5.
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*/
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if (inb(u_MixSelect) != 5) {
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for (i = 0; i < ICS_MIXDEVS; i++)
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left_fix[i] = 1;
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for (i = 0; i < ICS_MIXDEVS; i++)
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right_fix[i] = 2;
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}
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set_volumes(DEV_GF1, 0x5a5a);
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set_volumes(DEV_CD, 0x5a5a);
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set_volumes(DEV_MIC, 0x0000);
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set_volumes(DEV_LINE, 0x5a5a);
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set_volumes(DEV_VOL, 0x5a5a);
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set_volumes(DEV_UNUSED, 0x0000);
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}
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}
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#endif
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