linux/sound/isa/gus/gus_mixer.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   4 *  Routines for control of ICS 2101 chip and "mixer" in GF1 chip
   5 */
   6
   7#include <linux/time.h>
   8#include <linux/wait.h>
   9#include <sound/core.h>
  10#include <sound/control.h>
  11#include <sound/gus.h>
  12
  13/*
  14 *
  15 */
  16
  17#define GF1_SINGLE(xname, xindex, shift, invert) \
  18{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  19  .info = snd_gf1_info_single, \
  20  .get = snd_gf1_get_single, .put = snd_gf1_put_single, \
  21  .private_value = shift | (invert << 8) }
  22
  23#define snd_gf1_info_single     snd_ctl_boolean_mono_info
  24
  25static int snd_gf1_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  26{
  27        struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
  28        int shift = kcontrol->private_value & 0xff;
  29        int invert = (kcontrol->private_value >> 8) & 1;
  30        
  31        ucontrol->value.integer.value[0] = (gus->mix_cntrl_reg >> shift) & 1;
  32        if (invert)
  33                ucontrol->value.integer.value[0] ^= 1;
  34        return 0;
  35}
  36
  37static int snd_gf1_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  38{
  39        struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
  40        unsigned long flags;
  41        int shift = kcontrol->private_value & 0xff;
  42        int invert = (kcontrol->private_value >> 8) & 1;
  43        int change;
  44        unsigned char oval, nval;
  45        
  46        nval = ucontrol->value.integer.value[0] & 1;
  47        if (invert)
  48                nval ^= 1;
  49        nval <<= shift;
  50        spin_lock_irqsave(&gus->reg_lock, flags);
  51        oval = gus->mix_cntrl_reg;
  52        nval = (oval & ~(1 << shift)) | nval;
  53        change = nval != oval;
  54        outb(gus->mix_cntrl_reg = nval, GUSP(gus, MIXCNTRLREG));
  55        outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
  56        spin_unlock_irqrestore(&gus->reg_lock, flags);
  57        return change;
  58}
  59
  60#define ICS_DOUBLE(xname, xindex, addr) \
  61{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  62  .info = snd_ics_info_double, \
  63  .get = snd_ics_get_double, .put = snd_ics_put_double, \
  64  .private_value = addr }
  65
  66static int snd_ics_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  67{
  68        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  69        uinfo->count = 2;
  70        uinfo->value.integer.min = 0;
  71        uinfo->value.integer.max = 127;
  72        return 0;
  73}
  74
  75static int snd_ics_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  76{
  77        struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
  78        unsigned long flags;
  79        int addr = kcontrol->private_value & 0xff;
  80        unsigned char left, right;
  81        
  82        spin_lock_irqsave(&gus->reg_lock, flags);
  83        left = gus->gf1.ics_regs[addr][0];
  84        right = gus->gf1.ics_regs[addr][1];
  85        spin_unlock_irqrestore(&gus->reg_lock, flags);
  86        ucontrol->value.integer.value[0] = left & 127;
  87        ucontrol->value.integer.value[1] = right & 127;
  88        return 0;
  89}
  90
  91static int snd_ics_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  92{
  93        struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
  94        unsigned long flags;
  95        int addr = kcontrol->private_value & 0xff;
  96        int change;
  97        unsigned char val1, val2, oval1, oval2;
  98        
  99        val1 = ucontrol->value.integer.value[0] & 127;
 100        val2 = ucontrol->value.integer.value[1] & 127;
 101        spin_lock_irqsave(&gus->reg_lock, flags);
 102        oval1 = gus->gf1.ics_regs[addr][0];
 103        oval2 = gus->gf1.ics_regs[addr][1];
 104        change = val1 != oval1 || val2 != oval2;
 105        gus->gf1.ics_regs[addr][0] = val1;
 106        gus->gf1.ics_regs[addr][1] = val2;
 107        if (gus->ics_flag && gus->ics_flipped &&
 108            (addr == SNDRV_ICS_GF1_DEV || addr == SNDRV_ICS_MASTER_DEV))
 109                swap(val1, val2);
 110        addr <<= 3;
 111        outb(addr | 0, GUSP(gus, MIXCNTRLPORT));
 112        outb(1, GUSP(gus, MIXDATAPORT));
 113        outb(addr | 2, GUSP(gus, MIXCNTRLPORT));
 114        outb((unsigned char) val1, GUSP(gus, MIXDATAPORT));
 115        outb(addr | 1, GUSP(gus, MIXCNTRLPORT));
 116        outb(2, GUSP(gus, MIXDATAPORT));
 117        outb(addr | 3, GUSP(gus, MIXCNTRLPORT));
 118        outb((unsigned char) val2, GUSP(gus, MIXDATAPORT));
 119        spin_unlock_irqrestore(&gus->reg_lock, flags);
 120        return change;
 121}
 122
 123static const struct snd_kcontrol_new snd_gf1_controls[] = {
 124GF1_SINGLE("Master Playback Switch", 0, 1, 1),
 125GF1_SINGLE("Line Switch", 0, 0, 1),
 126GF1_SINGLE("Mic Switch", 0, 2, 0)
 127};
 128
 129static const struct snd_kcontrol_new snd_ics_controls[] = {
 130GF1_SINGLE("Master Playback Switch", 0, 1, 1),
 131ICS_DOUBLE("Master Playback Volume", 0, SNDRV_ICS_MASTER_DEV),
 132ICS_DOUBLE("Synth Playback Volume", 0, SNDRV_ICS_GF1_DEV),
 133GF1_SINGLE("Line Switch", 0, 0, 1),
 134ICS_DOUBLE("Line Playback Volume", 0, SNDRV_ICS_LINE_DEV),
 135GF1_SINGLE("Mic Switch", 0, 2, 0),
 136ICS_DOUBLE("Mic Playback Volume", 0, SNDRV_ICS_MIC_DEV),
 137ICS_DOUBLE("CD Playback Volume", 0, SNDRV_ICS_CD_DEV)
 138};
 139
 140int snd_gf1_new_mixer(struct snd_gus_card * gus)
 141{
 142        struct snd_card *card;
 143        unsigned int idx, max;
 144        int err;
 145
 146        if (snd_BUG_ON(!gus))
 147                return -EINVAL;
 148        card = gus->card;
 149        if (snd_BUG_ON(!card))
 150                return -EINVAL;
 151
 152        if (gus->ics_flag)
 153                snd_component_add(card, "ICS2101");
 154        if (card->mixername[0] == '\0') {
 155                strcpy(card->mixername, gus->ics_flag ? "GF1,ICS2101" : "GF1");
 156        } else {
 157                if (gus->ics_flag)
 158                        strcat(card->mixername, ",ICS2101");
 159                strcat(card->mixername, ",GF1");
 160        }
 161
 162        if (!gus->ics_flag) {
 163                max = gus->ess_flag ? 1 : ARRAY_SIZE(snd_gf1_controls);
 164                for (idx = 0; idx < max; idx++) {
 165                        if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_gf1_controls[idx], gus))) < 0)
 166                                return err;
 167                }
 168        } else {
 169                for (idx = 0; idx < ARRAY_SIZE(snd_ics_controls); idx++) {
 170                        if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ics_controls[idx], gus))) < 0)
 171                                return err;
 172                }
 173        }
 174        return 0;
 175}
 176