diff options
Diffstat (limited to 'sound/oss/ics2101.c')
| -rw-r--r-- | sound/oss/ics2101.c | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/sound/oss/ics2101.c b/sound/oss/ics2101.c deleted file mode 100644 index 45918df..0000000 --- a/sound/oss/ics2101.c +++ /dev/null @@ -1,247 +0,0 @@ -/* - * sound/oss/ics2101.c - * - * Driver for the ICS2101 mixer of GUS v3.7. - * - * - * 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 ics2101_mixer_init() - */ -#include <linux/init.h> -#include <linux/spinlock.h> -#include "sound_config.h" - -#include <linux/ultrasound.h> - -#include "gus.h" -#include "gus_hw.h" - -#define MIX_DEVS (SOUND_MASK_MIC|SOUND_MASK_LINE| \ - SOUND_MASK_SYNTH| \ - SOUND_MASK_CD | SOUND_MASK_VOLUME) - -extern int *gus_osp; -extern int gus_base; -extern spinlock_t gus_lock; -static int volumes[ICS_MIXDEVS]; -static int left_fix[ICS_MIXDEVS] = -{1, 1, 1, 2, 1, 2}; -static int right_fix[ICS_MIXDEVS] = -{2, 2, 2, 1, 2, 1}; - -static int scale_vol(int vol) -{ - /* - * Experimental volume scaling by Risto Kankkunen. - * This should give smoother volume response than just - * a plain multiplication. - */ - - int e; - - if (vol < 0) - vol = 0; - if (vol > 100) - vol = 100; - vol = (31 * vol + 50) / 100; - e = 0; - if (vol) - { - while (vol < 16) - { - vol <<= 1; - e--; - } - vol -= 16; - e += 7; - } - return ((e << 4) + vol); -} - -static void write_mix(int dev, int chn, int vol) -{ - int *selector; - unsigned long flags; - int ctrl_addr = dev << 3; - int attn_addr = dev << 3; - - vol = scale_vol(vol); - - if (chn == CHN_LEFT) - { - selector = left_fix; - ctrl_addr |= 0x00; - attn_addr |= 0x02; - } - else - { - selector = right_fix; - ctrl_addr |= 0x01; - attn_addr |= 0x03; - } - - spin_lock_irqsave(&gus_lock, flags); - outb((ctrl_addr), u_MixSelect); - outb((selector[dev]), u_MixData); - outb((attn_addr), u_MixSelect); - outb(((unsigned char) vol), u_MixData); - spin_unlock_irqrestore(&gus_lock,flags); -} - -static int set_volumes(int dev, int vol) -{ - int left = vol & 0x00ff; - int right = (vol >> 8) & 0x00ff; - - if (left < 0) - left = 0; - if (left > 100) - left = 100; - if (right < 0) - right = 0; - if (right > 100) - right = 100; - - write_mix(dev, CHN_LEFT, left); - write_mix(dev, CHN_RIGHT, right); - - vol = left + (right << 8); - volumes[dev] = vol; - return vol; -} - -static int ics2101_mixer_ioctl(int dev, unsigned int cmd, void __user *arg) -{ - int val; - - if (((cmd >> 8) & 0xff) == 'M') { - if (_SIOC_DIR(cmd) & _SIOC_WRITE) { - - if (get_user(val, (int __user *)arg)) - return -EFAULT; - switch (cmd & 0xff) { - case SOUND_MIXER_RECSRC: - return gus_default_mixer_ioctl(dev, cmd, arg); - - case SOUND_MIXER_MIC: - val = set_volumes(DEV_MIC, val); - break; - - case SOUND_MIXER_CD: - val = set_volumes(DEV_CD, val); - break; - - case SOUND_MIXER_LINE: - val = set_volumes(DEV_LINE, val); - break; - - case SOUND_MIXER_SYNTH: - val = set_volumes(DEV_GF1, val); - break; - - case SOUND_MIXER_VOLUME: - val = set_volumes(DEV_VOL, val); - break; - - default: - return -EINVAL; - } - return put_user(val, (int __user *)arg); - } else { - switch (cmd & 0xff) { - /* - * Return parameters - */ - case SOUND_MIXER_RECSRC: - return gus_default_mixer_ioctl(dev, cmd, arg); - - case SOUND_MIXER_DEVMASK: - val = MIX_DEVS; - break; - - case SOUND_MIXER_STEREODEVS: - val = SOUND_MASK_LINE | SOUND_MASK_CD | SOUND_MASK_SYNTH | SOUND_MASK_VOLUME | SOUND_MASK_MIC; - break; - - case SOUND_MIXER_RECMASK: - val = SOUND_MASK_MIC | SOUND_MASK_LINE; - break; - - case SOUND_MIXER_CAPS: - val = 0; - break; - - case SOUND_MIXER_MIC: - val = volumes[DEV_MIC]; - break; - - case SOUND_MIXER_LINE: - val = volumes[DEV_LINE]; - break; - - case SOUND_MIXER_CD: - val = volumes[DEV_CD]; - break; - - case SOUND_MIXER_VOLUME: - val = volumes[DEV_VOL]; - break; - - case SOUND_MIXER_SYNTH: - val = volumes[DEV_GF1]; - break; - - default: - return -EINVAL; - } - return put_user(val, (int __user *)arg); - } - } - return -EINVAL; -} - -static struct mixer_operations ics2101_mixer_operations = -{ - .owner = THIS_MODULE, - .id = "ICS2101", - .name = "ICS2101 Multimedia Mixer", - .ioctl = ics2101_mixer_ioctl -}; - -int __init ics2101_mixer_init(void) -{ - int i; - int n; - - if ((n = sound_alloc_mixerdev()) != -1) - { - mixer_devs[n] = &ics2101_mixer_operations; - - /* - * Some GUS v3.7 cards had some channels flipped. Disable - * the flipping feature if the model id is other than 5. - */ - - if (inb(u_MixSelect) != 5) - { - for (i = 0; i < ICS_MIXDEVS; i++) - left_fix[i] = 1; - for (i = 0; i < ICS_MIXDEVS; i++) - right_fix[i] = 2; - } - set_volumes(DEV_GF1, 0x5a5a); - set_volumes(DEV_CD, 0x5a5a); - set_volumes(DEV_MIC, 0x0000); - set_volumes(DEV_LINE, 0x5a5a); - set_volumes(DEV_VOL, 0x5a5a); - set_volumes(DEV_UNUSED, 0x0000); - } - return n; -} |
