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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [sound/] [pas2_mixer.c] - Blame information for rev 1765

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1 1626 jcastillo 
#define _PAS2_MIXER_C_
2 
 
3 
/*
4 
 * sound/pas2_mixer.c
5 
 *
6 
 * Mixer routines for the Pro Audio Spectrum cards.
7 
 */
8 
 
9 
#include <linux/config.h>
10 
 
11 
#include "sound_config.h"
12 
 
13 
#if defined(CONFIG_PAS)
14 
 
15 
#ifndef DEB
16 
#define DEB(what)               /* (what) */
17 
#endif
18 
 
19 
extern int      translate_code;
20 
extern char     pas_model;
21 
extern int     *pas_osp;
22 
extern int      pas_audiodev;
23 
 
24 
static int      rec_devices = (SOUND_MASK_MIC);         /* Default recording source */
25 
static int      mode_control = 0;
26 
 
27 
#define POSSIBLE_RECORDING_DEVICES      (SOUND_MASK_SYNTH | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
28 
                                         SOUND_MASK_CD | SOUND_MASK_ALTPCM)
29 
 
30 
#define SUPPORTED_MIXER_DEVICES         (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
31 
                                         SOUND_MASK_CD | SOUND_MASK_ALTPCM | SOUND_MASK_IMIX | \
32 
                                         SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_RECLEV)
33 
 
34 
 
35 
static unsigned short levels[SOUND_MIXER_NRDEVICES] =
36 
{
37 
  0x3232,                       /* Master Volume */
38 
  0x3232,                       /* Bass */
39 
  0x3232,                       /* Treble */
40 
  0x5050,                       /* FM */
41 
  0x4b4b,                       /* PCM */
42 
  0x3232,                       /* PC Speaker */
43 
  0x4b4b,                       /* Ext Line */
44 
  0x4b4b,                       /* Mic */
45 
  0x4b4b,                       /* CD */
46 
  0x6464,                       /* Recording monitor */
47 
  0x4b4b,                       /* SB PCM */
48 
  0x6464                        /* Recording level */
49 
};
50 
 
51 
void
52 
mix_write (unsigned char data, int ioaddr)
53 
{
54 
  /*
55 
   * The Revision D cards have a problem with their MVA508 interface. The
56 
   * kludge-o-rama fix is to make a 16-bit quantity with identical LSB and
57 
   * MSBs out of the output byte and to do a 16-bit out to the mixer port -
58 
   * 1. We need to do this because it isn't timing problem but chip access
59 
   * sequence problem.
60 
   */
61 
 
62 
  if (pas_model == 4)
63 
    {
64 
      outw (data | (data << 8), (ioaddr ^ translate_code) - 1);
65 
      outb (0x80, 0);
66 
    }
67 
  else
68 
    pas_write (data, ioaddr);
69 
}
70 
 
71 
static int
72 
mixer_output (int right_vol, int left_vol, int div, int bits,
73 
              int mixer)        /* Input or output mixer */
74 
{
75 
  int             left = left_vol * div / 100;
76 
  int             right = right_vol * div / 100;
77 
 
78 
 
79 
  if (bits & 0x10)
80 
    {                           /*
81 
                                 * Select input or output mixer
82 
                                 */
83 
      left |= mixer;
84 
      right |= mixer;
85 
    }
86 
 
87 
  if (bits == 0x03 || bits == 0x04)
88 
    {                           /*
89 
                                 * Bass and treble are mono devices
90 
                                 */
91 
      mix_write (0x80 | bits, 0x078B);
92 
      mix_write (left, 0x078B);
93 
      right_vol = left_vol;
94 
    }
95 
  else
96 
    {
97 
      mix_write (0x80 | 0x20 | bits, 0x078B);
98 
      mix_write (left, 0x078B);
99 
      mix_write (0x80 | 0x40 | bits, 0x078B);
100 
      mix_write (right, 0x078B);
101 
    }
102 
 
103 
  return (left_vol | (right_vol << 8));
104 
}
105 
 
106 
void
107 
set_mode (int new_mode)
108 
{
109 
  mix_write (0x80 | 0x05, 0x078B);
110 
  mix_write (new_mode, 0x078B);
111 
 
112 
  mode_control = new_mode;
113 
}
114 
 
115 
static int
116 
pas_mixer_set (int whichDev, unsigned int level)
117 
{
118 
  int             left, right, devmask, changed, i, mixer = 0;
119 
 
120 
  DEB (printk ("static int pas_mixer_set(int whichDev = %d, unsigned int level = %X)\n", whichDev, level));
121 
 
122 
  left = level & 0x7f;
123 
  right = (level & 0x7f00) >> 8;
124 
 
125 
  if (whichDev < SOUND_MIXER_NRDEVICES)
126 
    if ((1 << whichDev) & rec_devices)
127 
      mixer = 0x20;
128 
    else
129 
      mixer = 0x00;
130 
 
131 
  switch (whichDev)
132 
    {
133 
    case SOUND_MIXER_VOLUME:    /* Master volume (0-63) */
134 
      levels[whichDev] = mixer_output (right, left, 63, 0x01, 0);
135 
      break;
136 
 
137 
      /*
138 
       * Note! Bass and Treble are mono devices. Will use just the left
139 
       * channel.
140 
       */
141 
    case SOUND_MIXER_BASS:      /* Bass (0-12) */
142 
      levels[whichDev] = mixer_output (right, left, 12, 0x03, 0);
143 
      break;
144 
    case SOUND_MIXER_TREBLE:    /* Treble (0-12) */
145 
      levels[whichDev] = mixer_output (right, left, 12, 0x04, 0);
146 
      break;
147 
 
148 
    case SOUND_MIXER_SYNTH:     /* Internal synthesizer (0-31) */
149 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x00, mixer);
150 
      break;
151 
    case SOUND_MIXER_PCM:       /* PAS PCM (0-31) */
152 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x05, mixer);
153 
      break;
154 
    case SOUND_MIXER_ALTPCM:    /* SB PCM (0-31) */
155 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x07, mixer);
156 
      break;
157 
    case SOUND_MIXER_SPEAKER:   /* PC speaker (0-31) */
158 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x06, mixer);
159 
      break;
160 
    case SOUND_MIXER_LINE:      /* External line (0-31) */
161 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x02, mixer);
162 
      break;
163 
    case SOUND_MIXER_CD:        /* CD (0-31) */
164 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x03, mixer);
165 
      break;
166 
    case SOUND_MIXER_MIC:       /* External microphone (0-31) */
167 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x04, mixer);
168 
      break;
169 
    case SOUND_MIXER_IMIX:      /* Recording monitor (0-31) (Output mixer only) */
170 
      levels[whichDev] = mixer_output (right, left, 31, 0x10 | 0x01,
171 
                                       0x00);
172 
      break;
173 
    case SOUND_MIXER_RECLEV:    /* Recording level (0-15) */
174 
      levels[whichDev] = mixer_output (right, left, 15, 0x02, 0);
175 
      break;
176 
 
177 
 
178 
    case SOUND_MIXER_RECSRC:
179 
      devmask = level & POSSIBLE_RECORDING_DEVICES;
180 
 
181 
      changed = devmask ^ rec_devices;
182 
      rec_devices = devmask;
183 
 
184 
      for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
185 
        if (changed & (1 << i))
186 
          {
187 
            pas_mixer_set (i, levels[i]);
188 
          }
189 
      return rec_devices;
190 
      break;
191 
 
192 
    default:
193 
      return -(EINVAL);
194 
    }
195 
 
196 
  return (levels[whichDev]);
197 
}
198 
 
199 
/*****/
200 
 
201 
static void
202 
pas_mixer_reset (void)
203 
{
204 
  int             foo;
205 
 
206 
  DEB (printk ("pas2_mixer.c: void pas_mixer_reset(void)\n"));
207 
 
208 
  for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
209 
    pas_mixer_set (foo, levels[foo]);
210 
 
211 
  set_mode (0x04 | 0x01);
212 
}
213 
 
214 
int
215 
pas_mixer_ioctl (int dev, unsigned int cmd, caddr_t arg)
216 
{
217 
  DEB (printk ("pas2_mixer.c: int pas_mixer_ioctl(unsigned int cmd = %X, unsigned int arg = %X)\n", cmd, arg));
218 
 
219 
  if (cmd == SOUND_MIXER_PRIVATE1)      /* Set loudness bit */
220 
    {
221 
      int             level = get_user ((int *) arg);
222 
 
223 
      if (level == -1)          /* Return current settings */
224 
        {
225 
          if (mode_control & 0x04)
226 
            return snd_ioctl_return ((int *) arg, 1);
227 
          else
228 
            return snd_ioctl_return ((int *) arg, 0);
229 
        }
230 
      else
231 
        {
232 
          mode_control &= ~0x04;
233 
          if (level)
234 
            mode_control |= 0x04;
235 
          set_mode (mode_control);
236 
          return snd_ioctl_return ((int *) arg, !!level);       /* 0 or 1 */
237 
        }
238 
    }
239 
 
240 
 
241 
  if (cmd == SOUND_MIXER_PRIVATE2)      /* Set enhance bit */
242 
    {
243 
      int             level = get_user ((int *) arg);
244 
 
245 
      if (level == -1)          /* Return current settings */
246 
        {
247 
          if (!(mode_control & 0x03))
248 
            return snd_ioctl_return ((int *) arg, 0);
249 
          return snd_ioctl_return ((int *) arg, ((mode_control & 0x03) + 1) * 20);
250 
        }
251 
      else
252 
        {
253 
          int             i = 0;
254 
 
255 
          level &= 0x7f;
256 
          if (level)
257 
            i = (level / 20) - 1;
258 
 
259 
          mode_control &= ~0x03;
260 
          mode_control |= i & 0x03;
261 
          set_mode (mode_control);
262 
 
263 
          if (i)
264 
            i = (i + 1) * 20;
265 
 
266 
          return i;
267 
        }
268 
    }
269 
 
270 
  if (cmd == SOUND_MIXER_PRIVATE3)      /* Set mute bit */
271 
    {
272 
      int             level = get_user ((int *) arg);
273 
 
274 
      if (level == -1)          /* Return current settings */
275 
        {
276 
          return snd_ioctl_return ((int *) arg,
277 
                                   !(pas_read (0x0B8A) &
278 
                                     0x20));
279 
        }
280 
      else
281 
        {
282 
          if (level)
283 
            pas_write (pas_read (0x0B8A) & (~0x20),
284 
                       0x0B8A);
285 
          else
286 
            pas_write (pas_read (0x0B8A) | 0x20,
287 
                       0x0B8A);
288 
 
289 
          return !(pas_read (0x0B8A) & 0x20);
290 
        }
291 
    }
292 
 
293 
  if (((cmd >> 8) & 0xff) == 'M')
294 
    {
295 
      if (_IOC_DIR (cmd) & _IOC_WRITE)
296 
        return snd_ioctl_return ((int *) arg, pas_mixer_set (cmd & 0xff, get_user ((int *) arg)));
297 
      else
298 
        {                       /*
299 
                                 * Read parameters
300 
                                 */
301 
 
302 
          switch (cmd & 0xff)
303 
            {
304 
 
305 
            case SOUND_MIXER_RECSRC:
306 
              return snd_ioctl_return ((int *) arg, rec_devices);
307 
              break;
308 
 
309 
            case SOUND_MIXER_STEREODEVS:
310 
              return snd_ioctl_return ((int *) arg, SUPPORTED_MIXER_DEVICES & ~(SOUND_MASK_BASS | SOUND_MASK_TREBLE));
311 
              break;
312 
 
313 
            case SOUND_MIXER_DEVMASK:
314 
              return snd_ioctl_return ((int *) arg, SUPPORTED_MIXER_DEVICES);
315 
              break;
316 
 
317 
            case SOUND_MIXER_RECMASK:
318 
              return snd_ioctl_return ((int *) arg, POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES);
319 
              break;
320 
 
321 
            case SOUND_MIXER_CAPS:
322 
              return snd_ioctl_return ((int *) arg, 0);          /* No special capabilities */
323 
              break;
324 
 
325 
 
326 
            default:
327 
              return snd_ioctl_return ((int *) arg, levels[cmd & 0xff]);
328 
            }
329 
        }
330 
    }
331 
  return -(EINVAL);
332 
}
333 
 
334 
static struct mixer_operations pas_mixer_operations =
335 
{
336 
  "PAS16",
337 
  "Pro Audio Spectrum 16",
338 
  pas_mixer_ioctl
339 
};
340 
 
341 
int
342 
pas_init_mixer (void)
343 
{
344 
  pas_mixer_reset ();
345 
 
346 
  if (num_mixers < MAX_MIXER_DEV)
347 
    {
348 
      audio_devs[pas_audiodev]->mixer_dev = num_mixers;
349 
      mixer_devs[num_mixers++] = &pas_mixer_operations;
350 
    }
351 
  return 1;
352 
}
353 
 
354 
#endif

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