xref: /linux/sound/isa/gus/gus_mixer.c (revision 365d46dc9be9b3c833990a06f3994b1987eda578)
1 /*
2  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
3  *  Routines for control of ICS 2101 chip and "mixer" in GF1 chip
4  *
5  *
6  *   This program is free software; you can redistribute it and/or modify
7  *   it under the terms of the GNU General Public License as published by
8  *   the Free Software Foundation; either version 2 of the License, or
9  *   (at your option) any later version.
10  *
11  *   This program is distributed in the hope that it will be useful,
12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *   GNU General Public License for more details.
15  *
16  *   You should have received a copy of the GNU General Public License
17  *   along with this program; if not, write to the Free Software
18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19  *
20  */
21 
22 #include <linux/time.h>
23 #include <linux/wait.h>
24 #include <sound/core.h>
25 #include <sound/control.h>
26 #include <sound/gus.h>
27 
28 /*
29  *
30  */
31 
32 #define GF1_SINGLE(xname, xindex, shift, invert) \
33 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
34   .info = snd_gf1_info_single, \
35   .get = snd_gf1_get_single, .put = snd_gf1_put_single, \
36   .private_value = shift | (invert << 8) }
37 
38 #define snd_gf1_info_single	snd_ctl_boolean_mono_info
39 
40 static int snd_gf1_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
41 {
42 	struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
43 	int shift = kcontrol->private_value & 0xff;
44 	int invert = (kcontrol->private_value >> 8) & 1;
45 
46 	ucontrol->value.integer.value[0] = (gus->mix_cntrl_reg >> shift) & 1;
47 	if (invert)
48 		ucontrol->value.integer.value[0] ^= 1;
49 	return 0;
50 }
51 
52 static int snd_gf1_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
53 {
54 	struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
55 	unsigned long flags;
56 	int shift = kcontrol->private_value & 0xff;
57 	int invert = (kcontrol->private_value >> 8) & 1;
58 	int change;
59 	unsigned char oval, nval;
60 
61 	nval = ucontrol->value.integer.value[0] & 1;
62 	if (invert)
63 		nval ^= 1;
64 	nval <<= shift;
65 	spin_lock_irqsave(&gus->reg_lock, flags);
66 	oval = gus->mix_cntrl_reg;
67 	nval = (oval & ~(1 << shift)) | nval;
68 	change = nval != oval;
69 	outb(gus->mix_cntrl_reg = nval, GUSP(gus, MIXCNTRLREG));
70 	outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
71 	spin_unlock_irqrestore(&gus->reg_lock, flags);
72 	return change;
73 }
74 
75 #define ICS_DOUBLE(xname, xindex, addr) \
76 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
77   .info = snd_ics_info_double, \
78   .get = snd_ics_get_double, .put = snd_ics_put_double, \
79   .private_value = addr }
80 
81 static int snd_ics_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
82 {
83 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
84 	uinfo->count = 2;
85 	uinfo->value.integer.min = 0;
86 	uinfo->value.integer.max = 127;
87 	return 0;
88 }
89 
90 static int snd_ics_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
91 {
92 	struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
93 	unsigned long flags;
94 	int addr = kcontrol->private_value & 0xff;
95 	unsigned char left, right;
96 
97 	spin_lock_irqsave(&gus->reg_lock, flags);
98 	left = gus->gf1.ics_regs[addr][0];
99 	right = gus->gf1.ics_regs[addr][1];
100 	spin_unlock_irqrestore(&gus->reg_lock, flags);
101 	ucontrol->value.integer.value[0] = left & 127;
102 	ucontrol->value.integer.value[1] = right & 127;
103 	return 0;
104 }
105 
106 static int snd_ics_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
107 {
108 	struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
109 	unsigned long flags;
110 	int addr = kcontrol->private_value & 0xff;
111 	int change;
112 	unsigned char val1, val2, oval1, oval2, tmp;
113 
114 	val1 = ucontrol->value.integer.value[0] & 127;
115 	val2 = ucontrol->value.integer.value[1] & 127;
116 	spin_lock_irqsave(&gus->reg_lock, flags);
117 	oval1 = gus->gf1.ics_regs[addr][0];
118 	oval2 = gus->gf1.ics_regs[addr][1];
119 	change = val1 != oval1 || val2 != oval2;
120 	gus->gf1.ics_regs[addr][0] = val1;
121 	gus->gf1.ics_regs[addr][1] = val2;
122 	if (gus->ics_flag && gus->ics_flipped &&
123 	    (addr == SNDRV_ICS_GF1_DEV || addr == SNDRV_ICS_MASTER_DEV)) {
124 		tmp = val1;
125 		val1 = val2;
126 		val2 = tmp;
127 	}
128 	addr <<= 3;
129 	outb(addr | 0, GUSP(gus, MIXCNTRLPORT));
130 	outb(1, GUSP(gus, MIXDATAPORT));
131 	outb(addr | 2, GUSP(gus, MIXCNTRLPORT));
132 	outb((unsigned char) val1, GUSP(gus, MIXDATAPORT));
133 	outb(addr | 1, GUSP(gus, MIXCNTRLPORT));
134 	outb(2, GUSP(gus, MIXDATAPORT));
135 	outb(addr | 3, GUSP(gus, MIXCNTRLPORT));
136 	outb((unsigned char) val2, GUSP(gus, MIXDATAPORT));
137 	spin_unlock_irqrestore(&gus->reg_lock, flags);
138 	return change;
139 }
140 
141 static struct snd_kcontrol_new snd_gf1_controls[] = {
142 GF1_SINGLE("Master Playback Switch", 0, 1, 1),
143 GF1_SINGLE("Line Switch", 0, 0, 1),
144 GF1_SINGLE("Mic Switch", 0, 2, 0)
145 };
146 
147 static struct snd_kcontrol_new snd_ics_controls[] = {
148 GF1_SINGLE("Master Playback Switch", 0, 1, 1),
149 ICS_DOUBLE("Master Playback Volume", 0, SNDRV_ICS_MASTER_DEV),
150 ICS_DOUBLE("Synth Playback Volume", 0, SNDRV_ICS_GF1_DEV),
151 GF1_SINGLE("Line Switch", 0, 0, 1),
152 ICS_DOUBLE("Line Playback Volume", 0, SNDRV_ICS_LINE_DEV),
153 GF1_SINGLE("Mic Switch", 0, 2, 0),
154 ICS_DOUBLE("Mic Playback Volume", 0, SNDRV_ICS_MIC_DEV),
155 ICS_DOUBLE("CD Playback Volume", 0, SNDRV_ICS_CD_DEV)
156 };
157 
158 int snd_gf1_new_mixer(struct snd_gus_card * gus)
159 {
160 	struct snd_card *card;
161 	unsigned int idx, max;
162 	int err;
163 
164 	if (snd_BUG_ON(!gus))
165 		return -EINVAL;
166 	card = gus->card;
167 	if (snd_BUG_ON(!card))
168 		return -EINVAL;
169 
170 	if (gus->ics_flag)
171 		snd_component_add(card, "ICS2101");
172 	if (card->mixername[0] == '\0') {
173 		strcpy(card->mixername, gus->ics_flag ? "GF1,ICS2101" : "GF1");
174 	} else {
175 		if (gus->ics_flag)
176 			strcat(card->mixername, ",ICS2101");
177 		strcat(card->mixername, ",GF1");
178 	}
179 
180 	if (!gus->ics_flag) {
181 		max = gus->ess_flag ? 1 : ARRAY_SIZE(snd_gf1_controls);
182 		for (idx = 0; idx < max; idx++) {
183 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_gf1_controls[idx], gus))) < 0)
184 				return err;
185 		}
186 	} else {
187 		for (idx = 0; idx < ARRAY_SIZE(snd_ics_controls); idx++) {
188 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ics_controls[idx], gus))) < 0)
189 				return err;
190 		}
191 	}
192 	return 0;
193 }
194