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1
2/*
3 * sound/oss/pas2_mixer.c
4 *
5 * Mixer routines for the Pro Audio Spectrum cards.
6 */
7
8/*
9 * Copyright (C) by Hannu Savolainen 1993-1997
10 *
11 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
12 * Version 2 (June 1991). See the "COPYING" file distributed with this software
13 * for more info.
14 */
15/*
16 * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
17 * Bartlomiej Zolnierkiewicz : added __init to pas_init_mixer()
18 */
19#include <linux/init.h>
20#include "sound_config.h"
21
22#include "pas2.h"
23
24extern int pas_translate_code;
25extern char pas_model;
26extern int *pas_osp;
27extern int pas_audiodev;
28
29static int rec_devices = (SOUND_MASK_MIC); /* Default recording source */
30static int mode_control;
31
32#define POSSIBLE_RECORDING_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
33 SOUND_MASK_CD | SOUND_MASK_ALTPCM)
34
35#define SUPPORTED_MIXER_DEVICES (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
36 SOUND_MASK_CD | SOUND_MASK_ALTPCM | SOUND_MASK_IMIX | \
37 SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_RECLEV)
38
39static int *levels;
40
41static int default_levels[32] =
42{
43 0x3232, /* Master Volume */
44 0x3232, /* Bass */
45 0x3232, /* Treble */
46 0x5050, /* FM */
47 0x4b4b, /* PCM */
48 0x3232, /* PC Speaker */
49 0x4b4b, /* Ext Line */
50 0x4b4b, /* Mic */
51 0x4b4b, /* CD */
52 0x6464, /* Recording monitor */
53 0x4b4b, /* SB PCM */
54 0x6464 /* Recording level */
55};
56
57void
58mix_write(unsigned char data, int ioaddr)
59{
60 /*
61 * The Revision D cards have a problem with their MVA508 interface. The
62 * kludge-o-rama fix is to make a 16-bit quantity with identical LSB and
63 * MSBs out of the output byte and to do a 16-bit out to the mixer port -
64 * 1. We need to do this because it isn't timing problem but chip access
65 * sequence problem.
66 */
67
68 if (pas_model == 4)
69 {
70 outw(data | (data << 8), (ioaddr + pas_translate_code) - 1);
71 outb((0x80), 0);
72 } else
73 pas_write(data, ioaddr);
74}
75
76static int
77mixer_output(int right_vol, int left_vol, int div, int bits,
78 int mixer) /* Input or output mixer */
79{
80 int left = left_vol * div / 100;
81 int right = right_vol * div / 100;
82
83
84 if (bits & 0x10)
85 {
86 left |= mixer;
87 right |= mixer;
88 }
89 if (bits == 0x03 || bits == 0x04)
90 {
91 mix_write(0x80 | bits, 0x078B);
92 mix_write(left, 0x078B);
93 right_vol = left_vol;
94 } else
95 {
96 mix_write(0x80 | 0x20 | bits, 0x078B);
97 mix_write(left, 0x078B);
98 mix_write(0x80 | 0x40 | bits, 0x078B);
99 mix_write(right, 0x078B);
100 }
101
102 return (left_vol | (right_vol << 8));
103}
104
105static void
106set_mode(int new_mode)
107{
108 mix_write(0x80 | 0x05, 0x078B);
109 mix_write(new_mode, 0x078B);
110
111 mode_control = new_mode;
112}
113
114static int
115pas_mixer_set(int whichDev, unsigned int level)
116{
117 int left, right, devmask, changed, i, mixer = 0;
118
119 left = level & 0x7f;
120 right = (level & 0x7f00) >> 8;
121
122 if (whichDev < SOUND_MIXER_NRDEVICES) {
123 if ((1 << whichDev) & rec_devices)
124 mixer = 0x20;
125 else
126 mixer = 0x00;
127 }
128
129 switch (whichDev)
130 {
131 case SOUND_MIXER_VOLUME: /* Master volume (0-63) */
132 levels[whichDev] = mixer_output(right, left, 63, 0x01, 0);
133 break;
134
135 /*
136 * Note! Bass and Treble are mono devices. Will use just the left
137 * channel.
138 */
139 case SOUND_MIXER_BASS: /* Bass (0-12) */
140 levels[whichDev] = mixer_output(right, left, 12, 0x03, 0);
141 break;
142 case SOUND_MIXER_TREBLE: /* Treble (0-12) */
143 levels[whichDev] = mixer_output(right, left, 12, 0x04, 0);
144 break;
145
146 case SOUND_MIXER_SYNTH: /* Internal synthesizer (0-31) */
147 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x00, mixer);
148 break;
149 case SOUND_MIXER_PCM: /* PAS PCM (0-31) */
150 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x05, mixer);
151 break;
152 case SOUND_MIXER_ALTPCM: /* SB PCM (0-31) */
153 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x07, mixer);
154 break;
155 case SOUND_MIXER_SPEAKER: /* PC speaker (0-31) */
156 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x06, mixer);
157 break;
158 case SOUND_MIXER_LINE: /* External line (0-31) */
159 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x02, mixer);
160 break;
161 case SOUND_MIXER_CD: /* CD (0-31) */
162 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x03, mixer);
163 break;
164 case SOUND_MIXER_MIC: /* External microphone (0-31) */
165 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x04, mixer);
166 break;
167 case SOUND_MIXER_IMIX: /* Recording monitor (0-31) (Output mixer only) */
168 levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x01,
169 0x00);
170 break;
171 case SOUND_MIXER_RECLEV: /* Recording level (0-15) */
172 levels[whichDev] = mixer_output(right, left, 15, 0x02, 0);
173 break;
174
175
176 case SOUND_MIXER_RECSRC:
177 devmask = level & POSSIBLE_RECORDING_DEVICES;
178
179 changed = devmask ^ rec_devices;
180 rec_devices = devmask;
181
182 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
183 if (changed & (1 << i))
184 {
185 pas_mixer_set(i, levels[i]);
186 }
187 return rec_devices;
188 break;
189
190 default:
191 return -EINVAL;
192 }
193
194 return (levels[whichDev]);
195}
196
197/*****/
198
199static void
200pas_mixer_reset(void)
201{
202 int foo;
203
204 for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
205 pas_mixer_set(foo, levels[foo]);
206
207 set_mode(0x04 | 0x01);
208}
209
210static int pas_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
211{
212 int level,v ;
213 int __user *p = (int __user *)arg;
214
215 if (cmd == SOUND_MIXER_PRIVATE1) { /* Set loudness bit */
216 if (get_user(level, p))
217 return -EFAULT;
218 if (level == -1) /* Return current settings */
219 level = (mode_control & 0x04);
220 else {
221 mode_control &= ~0x04;
222 if (level)
223 mode_control |= 0x04;
224 set_mode(mode_control);
225 }
226 level = !!level;
227 return put_user(level, p);
228 }
229 if (cmd == SOUND_MIXER_PRIVATE2) { /* Set enhance bit */
230 if (get_user(level, p))
231 return -EFAULT;
232 if (level == -1) { /* Return current settings */
233 if (!(mode_control & 0x03))
234 level = 0;
235 else
236 level = ((mode_control & 0x03) + 1) * 20;
237 } else {
238 int i = 0;
239
240 level &= 0x7f;
241 if (level)
242 i = (level / 20) - 1;
243 mode_control &= ~0x03;
244 mode_control |= i & 0x03;
245 set_mode(mode_control);
246 if (i)
247 i = (i + 1) * 20;
248 level = i;
249 }
250 return put_user(level, p);
251 }
252 if (cmd == SOUND_MIXER_PRIVATE3) { /* Set mute bit */
253 if (get_user(level, p))
254 return -EFAULT;
255 if (level == -1) /* Return current settings */
256 level = !(pas_read(0x0B8A) & 0x20);
257 else {
258 if (level)
259 pas_write(pas_read(0x0B8A) & (~0x20), 0x0B8A);
260 else
261 pas_write(pas_read(0x0B8A) | 0x20, 0x0B8A);
262
263 level = !(pas_read(0x0B8A) & 0x20);
264 }
265 return put_user(level, p);
266 }
267 if (((cmd >> 8) & 0xff) == 'M') {
268 if (get_user(v, p))
269 return -EFAULT;
270 if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
271 v = pas_mixer_set(cmd & 0xff, v);
272 } else {
273 switch (cmd & 0xff) {
274 case SOUND_MIXER_RECSRC:
275 v = rec_devices;
276 break;
277
278 case SOUND_MIXER_STEREODEVS:
279 v = SUPPORTED_MIXER_DEVICES & ~(SOUND_MASK_BASS | SOUND_MASK_TREBLE);
280 break;
281
282 case SOUND_MIXER_DEVMASK:
283 v = SUPPORTED_MIXER_DEVICES;
284 break;
285
286 case SOUND_MIXER_RECMASK:
287 v = POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES;
288 break;
289
290 case SOUND_MIXER_CAPS:
291 v = 0; /* No special capabilities */
292 break;
293
294 default:
295 v = levels[cmd & 0xff];
296 break;
297 }
298 }
299 return put_user(v, p);
300 }
301 return -EINVAL;
302}
303
304static struct mixer_operations pas_mixer_operations =
305{
306 .owner = THIS_MODULE,
307 .id = "PAS16",
308 .name = "Pro Audio Spectrum 16",
309 .ioctl = pas_mixer_ioctl
310};
311
312int __init
313pas_init_mixer(void)
314{
315 int d;
316
317 levels = load_mixer_volumes("PAS16_1", default_levels, 1);
318
319 pas_mixer_reset();
320
321 if ((d = sound_alloc_mixerdev()) != -1)
322 {
323 audio_devs[pas_audiodev]->mixer_dev = d;
324 mixer_devs[d] = &pas_mixer_operations;
325 }
326 return 1;
327}