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[ALSA] seq: set client name in snd_seq_create_kernel_client()
[mirror_ubuntu-artful-kernel.git] / sound / pci / trident / trident_synth.c
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1da177e4
LT		 1/*
2 * Routines for Trident 4DWave NX/DX soundcards - Synthesizer
3 * Copyright (c) by Scott McNab <jedi@tartarus.uwa.edu.au>
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 <sound/driver.h>
23#include <asm/io.h>
24#include <linux/init.h>
25#include <linux/slab.h>
26#include <linux/pci.h>
27#include <sound/core.h>
28#include <sound/trident.h>
29#include <sound/seq_device.h>
30
31MODULE_AUTHOR("Scott McNab <jedi@tartarus.uwa.edu.au>");
32MODULE_DESCRIPTION("Routines for Trident 4DWave NX/DX soundcards - Synthesizer");
33MODULE_LICENSE("GPL");
34
35/* linear to log pan conversion table (4.2 channel attenuation format) */
36static unsigned int pan_table[63] = {
37 7959, 7733, 7514, 7301, 7093, 6892, 6697, 6507,
38 6322, 6143, 5968, 5799, 5634, 5475, 5319, 5168,
39 5022, 4879, 4741, 4606, 4475, 4349, 4225, 4105,
40 3989, 3876, 3766, 3659, 3555, 3454, 3356, 3261,
41 3168, 3078, 2991, 2906, 2824, 2744, 2666, 2590,
42 2517, 2445, 2376, 2308, 2243, 2179, 2117, 2057,
43 1999, 1942, 1887, 1833, 1781, 1731, 1682, 1634,
44 1588, 1543, 1499, 1456, 1415, 1375, 1336
45};
46
47#define LOG_TABLE_SIZE 386
48
49/* Linear half-attenuation to log conversion table in the format:
50 * {linear volume, logarithmic attenuation equivalent}, ...
51 *
52 * Provides conversion from a linear half-volume value in the range
53 * [0,8192] to a logarithmic attenuation value in the range 0 to 6.02dB.
54 * Halving the linear volume is equivalent to an additional 6dB of
55 * logarithmic attenuation. The algorithm used in log_from_linear()
56 * therefore uses this table as follows:
57 *
58 * - loop and for every time the volume is less than half the maximum
59 * volume (16384), add another 6dB and halve the maximum value used
60 * for this comparison.
61 * - when the volume is greater than half the maximum volume, take
62 * the difference of the volume to half volume (in the range [0,8192])
63 * and look up the log_table[] to find the nearest entry.
64 * - take the logarithic component of this entry and add it to the
65 * resulting attenuation.
66 *
67 * Thus this routine provides a linear->log conversion for a range of
68 * [0,16384] using only 386 table entries
69 *
70 * Note: although this table stores log attenuation in 8.8 format, values
71 * were only calculated for 6 bits fractional precision, since that is
72 * the most precision offered by the trident hardware.
73 */
74
75static unsigned short log_table[LOG_TABLE_SIZE*2] =
76{
77 4, 0x0604, 19, 0x0600, 34, 0x05fc,
78 49, 0x05f8, 63, 0x05f4, 78, 0x05f0, 93, 0x05ec, 108, 0x05e8,
79 123, 0x05e4, 138, 0x05e0, 153, 0x05dc, 168, 0x05d8, 183, 0x05d4,
80 198, 0x05d0, 213, 0x05cc, 228, 0x05c8, 244, 0x05c4, 259, 0x05c0,
81 274, 0x05bc, 289, 0x05b8, 304, 0x05b4, 320, 0x05b0, 335, 0x05ac,
82 350, 0x05a8, 366, 0x05a4, 381, 0x05a0, 397, 0x059c, 412, 0x0598,
83 428, 0x0594, 443, 0x0590, 459, 0x058c, 474, 0x0588, 490, 0x0584,
84 506, 0x0580, 521, 0x057c, 537, 0x0578, 553, 0x0574, 568, 0x0570,
85 584, 0x056c, 600, 0x0568, 616, 0x0564, 632, 0x0560, 647, 0x055c,
86 663, 0x0558, 679, 0x0554, 695, 0x0550, 711, 0x054c, 727, 0x0548,
87 743, 0x0544, 759, 0x0540, 776, 0x053c, 792, 0x0538, 808, 0x0534,
88 824, 0x0530, 840, 0x052c, 857, 0x0528, 873, 0x0524, 889, 0x0520,
89 906, 0x051c, 922, 0x0518, 938, 0x0514, 955, 0x0510, 971, 0x050c,
90 988, 0x0508, 1004, 0x0504, 1021, 0x0500, 1037, 0x04fc, 1054, 0x04f8,
91 1071, 0x04f4, 1087, 0x04f0, 1104, 0x04ec, 1121, 0x04e8, 1138, 0x04e4,
92 1154, 0x04e0, 1171, 0x04dc, 1188, 0x04d8, 1205, 0x04d4, 1222, 0x04d0,
93 1239, 0x04cc, 1256, 0x04c8, 1273, 0x04c4, 1290, 0x04c0, 1307, 0x04bc,
94 1324, 0x04b8, 1341, 0x04b4, 1358, 0x04b0, 1376, 0x04ac, 1393, 0x04a8,
95 1410, 0x04a4, 1427, 0x04a0, 1445, 0x049c, 1462, 0x0498, 1479, 0x0494,
96 1497, 0x0490, 1514, 0x048c, 1532, 0x0488, 1549, 0x0484, 1567, 0x0480,
97 1584, 0x047c, 1602, 0x0478, 1620, 0x0474, 1637, 0x0470, 1655, 0x046c,
98 1673, 0x0468, 1690, 0x0464, 1708, 0x0460, 1726, 0x045c, 1744, 0x0458,
99 1762, 0x0454, 1780, 0x0450, 1798, 0x044c, 1816, 0x0448, 1834, 0x0444,
100 1852, 0x0440, 1870, 0x043c, 1888, 0x0438, 1906, 0x0434, 1924, 0x0430,
101 1943, 0x042c, 1961, 0x0428, 1979, 0x0424, 1997, 0x0420, 2016, 0x041c,
102 2034, 0x0418, 2053, 0x0414, 2071, 0x0410, 2089, 0x040c, 2108, 0x0408,
103 2127, 0x0404, 2145, 0x0400, 2164, 0x03fc, 2182, 0x03f8, 2201, 0x03f4,
104 2220, 0x03f0, 2239, 0x03ec, 2257, 0x03e8, 2276, 0x03e4, 2295, 0x03e0,
105 2314, 0x03dc, 2333, 0x03d8, 2352, 0x03d4, 2371, 0x03d0, 2390, 0x03cc,
106 2409, 0x03c8, 2428, 0x03c4, 2447, 0x03c0, 2466, 0x03bc, 2485, 0x03b8,
107 2505, 0x03b4, 2524, 0x03b0, 2543, 0x03ac, 2562, 0x03a8, 2582, 0x03a4,
108 2601, 0x03a0, 2621, 0x039c, 2640, 0x0398, 2660, 0x0394, 2679, 0x0390,
109 2699, 0x038c, 2718, 0x0388, 2738, 0x0384, 2758, 0x0380, 2777, 0x037c,
110 2797, 0x0378, 2817, 0x0374, 2837, 0x0370, 2857, 0x036c, 2876, 0x0368,
111 2896, 0x0364, 2916, 0x0360, 2936, 0x035c, 2956, 0x0358, 2976, 0x0354,
112 2997, 0x0350, 3017, 0x034c, 3037, 0x0348, 3057, 0x0344, 3077, 0x0340,
113 3098, 0x033c, 3118, 0x0338, 3138, 0x0334, 3159, 0x0330, 3179, 0x032c,
114 3200, 0x0328, 3220, 0x0324, 3241, 0x0320, 3261, 0x031c, 3282, 0x0318,
115 3303, 0x0314, 3323, 0x0310, 3344, 0x030c, 3365, 0x0308, 3386, 0x0304,
116 3406, 0x0300, 3427, 0x02fc, 3448, 0x02f8, 3469, 0x02f4, 3490, 0x02f0,
117 3511, 0x02ec, 3532, 0x02e8, 3553, 0x02e4, 3575, 0x02e0, 3596, 0x02dc,
118 3617, 0x02d8, 3638, 0x02d4, 3660, 0x02d0, 3681, 0x02cc, 3702, 0x02c8,
119 3724, 0x02c4, 3745, 0x02c0, 3767, 0x02bc, 3788, 0x02b8, 3810, 0x02b4,
120 3831, 0x02b0, 3853, 0x02ac, 3875, 0x02a8, 3896, 0x02a4, 3918, 0x02a0,
121 3940, 0x029c, 3962, 0x0298, 3984, 0x0294, 4006, 0x0290, 4028, 0x028c,
122 4050, 0x0288, 4072, 0x0284, 4094, 0x0280, 4116, 0x027c, 4138, 0x0278,
123 4160, 0x0274, 4182, 0x0270, 4205, 0x026c, 4227, 0x0268, 4249, 0x0264,
124 4272, 0x0260, 4294, 0x025c, 4317, 0x0258, 4339, 0x0254, 4362, 0x0250,
125 4384, 0x024c, 4407, 0x0248, 4430, 0x0244, 4453, 0x0240, 4475, 0x023c,
126 4498, 0x0238, 4521, 0x0234, 4544, 0x0230, 4567, 0x022c, 4590, 0x0228,
127 4613, 0x0224, 4636, 0x0220, 4659, 0x021c, 4682, 0x0218, 4705, 0x0214,
128 4728, 0x0210, 4752, 0x020c, 4775, 0x0208, 4798, 0x0204, 4822, 0x0200,
129 4845, 0x01fc, 4869, 0x01f8, 4892, 0x01f4, 4916, 0x01f0, 4939, 0x01ec,
130 4963, 0x01e8, 4987, 0x01e4, 5010, 0x01e0, 5034, 0x01dc, 5058, 0x01d8,
131 5082, 0x01d4, 5106, 0x01d0, 5130, 0x01cc, 5154, 0x01c8, 5178, 0x01c4,
132 5202, 0x01c0, 5226, 0x01bc, 5250, 0x01b8, 5274, 0x01b4, 5299, 0x01b0,
133 5323, 0x01ac, 5347, 0x01a8, 5372, 0x01a4, 5396, 0x01a0, 5420, 0x019c,
134 5445, 0x0198, 5469, 0x0194, 5494, 0x0190, 5519, 0x018c, 5543, 0x0188,
135 5568, 0x0184, 5593, 0x0180, 5618, 0x017c, 5643, 0x0178, 5668, 0x0174,
136 5692, 0x0170, 5717, 0x016c, 5743, 0x0168, 5768, 0x0164, 5793, 0x0160,
137 5818, 0x015c, 5843, 0x0158, 5868, 0x0154, 5894, 0x0150, 5919, 0x014c,
138 5945, 0x0148, 5970, 0x0144, 5995, 0x0140, 6021, 0x013c, 6047, 0x0138,
139 6072, 0x0134, 6098, 0x0130, 6124, 0x012c, 6149, 0x0128, 6175, 0x0124,
140 6201, 0x0120, 6227, 0x011c, 6253, 0x0118, 6279, 0x0114, 6305, 0x0110,
141 6331, 0x010c, 6357, 0x0108, 6384, 0x0104, 6410, 0x0100, 6436, 0x00fc,
142 6462, 0x00f8, 6489, 0x00f4, 6515, 0x00f0, 6542, 0x00ec, 6568, 0x00e8,
143 6595, 0x00e4, 6621, 0x00e0, 6648, 0x00dc, 6675, 0x00d8, 6702, 0x00d4,
144 6728, 0x00d0, 6755, 0x00cc, 6782, 0x00c8, 6809, 0x00c4, 6836, 0x00c0,
145 6863, 0x00bc, 6890, 0x00b8, 6917, 0x00b4, 6945, 0x00b0, 6972, 0x00ac,
146 6999, 0x00a8, 7027, 0x00a4, 7054, 0x00a0, 7081, 0x009c, 7109, 0x0098,
147 7136, 0x0094, 7164, 0x0090, 7192, 0x008c, 7219, 0x0088, 7247, 0x0084,
148 7275, 0x0080, 7303, 0x007c, 7331, 0x0078, 7359, 0x0074, 7387, 0x0070,
149 7415, 0x006c, 7443, 0x0068, 7471, 0x0064, 7499, 0x0060, 7527, 0x005c,
150 7556, 0x0058, 7584, 0x0054, 7613, 0x0050, 7641, 0x004c, 7669, 0x0048,
151 7698, 0x0044, 7727, 0x0040, 7755, 0x003c, 7784, 0x0038, 7813, 0x0034,
152 7842, 0x0030, 7870, 0x002c, 7899, 0x0028, 7928, 0x0024, 7957, 0x0020,
153 7986, 0x001c, 8016, 0x0018, 8045, 0x0014, 8074, 0x0010, 8103, 0x000c,
154 8133, 0x0008, 8162, 0x0004, 8192, 0x0000
155};
156
157static unsigned short lookup_volume_table( unsigned short value )
158{
159 /* This code is an optimised version of:
160 * int i = 0;
161 * while( volume_table[i*2] < value )
162 * i++;
163 * return volume_table[i*2+1];
164 */
165 unsigned short *ptr = log_table;
166 while( *ptr < value )
167 ptr += 2;
168 return *(ptr+1);
169}
170
171/* this function calculates a 8.8 fixed point logarithmic attenuation
172 * value from a linear volume value in the range 0 to 16384 */
173static unsigned short log_from_linear( unsigned short value )
174{
175 if (value >= 16384)
176 return 0x0000;
177 if (value) {
178 unsigned short result = 0;
179 int v, c;
180 for( c = 0, v = 8192; c < 14; c++, v >>= 1 ) {
181 if( value >= v ) {
182 result += lookup_volume_table( (value - v) << c );
183 return result;
184 }
185 result += 0x0605; /* 6.0205 (result of -20*log10(0.5)) */
186 }
187 }
188 return 0xffff;
189}
190
191/*
192 * Sample handling operations
193 */
194
bee1a5be
TI		 195static void sample_start(struct snd_trident * trident, struct snd_trident_voice * voice, snd_seq_position_t position);
196static void sample_stop(struct snd_trident * trident, struct snd_trident_voice * voice, int mode);
197static void sample_freq(struct snd_trident * trident, struct snd_trident_voice * voice, snd_seq_frequency_t freq);
198static void sample_volume(struct snd_trident * trident, struct snd_trident_voice * voice, struct snd_seq_ev_volume * volume);
199static void sample_loop(struct snd_trident * trident, struct snd_trident_voice * voice, struct snd_seq_ev_loop * loop);
200static void sample_pos(struct snd_trident * trident, struct snd_trident_voice * voice, snd_seq_position_t position);
201static void sample_private1(struct snd_trident * trident, struct snd_trident_voice * voice, unsigned char *data);
202
203static struct snd_trident_sample_ops sample_ops =
1da177e4
LT		 204{
205 sample_start,
206 sample_stop,
207 sample_freq,
208 sample_volume,
209 sample_loop,
210 sample_pos,
211 sample_private1
212};
213
bee1a5be 214static void snd_trident_simple_init(struct snd_trident_voice * voice)
1da177e4
LT		 215{
216 //voice->handler_wave = interrupt_wave;
217 //voice->handler_volume = interrupt_volume;
218 //voice->handler_effect = interrupt_effect;
219 //voice->volume_change = NULL;
220 voice->sample_ops = &sample_ops;
221}
222
bee1a5be 223static void sample_start(struct snd_trident * trident, struct snd_trident_voice * voice, snd_seq_position_t position)
1da177e4 224{
bee1a5be
TI		 225 struct simple_instrument *simple;
226 struct snd_seq_kinstr *instr;
1da177e4
LT		 227 unsigned long flags;
228 unsigned int loop_start, loop_end, sample_start, sample_end, start_offset;
229 unsigned int value;
230 unsigned int shift = 0;
231
232 instr = snd_seq_instr_find(trident->synth.ilist, &voice->instr, 0, 1);
233 if (instr == NULL)
234 return;
235 voice->instr = instr->instr; /* copy ID to speedup aliases */
236 simple = KINSTR_DATA(instr);
237
238 spin_lock_irqsave(&trident->reg_lock, flags);
239
240 if (trident->device == TRIDENT_DEVICE_ID_SI7018)
241 voice->GVSel = 1; /* route to Wave volume */
242
243 voice->CTRL = 0;
244 voice->Alpha = 0;
245 voice->FMS = 0;
246
247 loop_start = simple->loop_start >> 4;
248 loop_end = simple->loop_end >> 4;
249 sample_start = (simple->start + position) >> 4;
250 if( sample_start >= simple->size )
251 sample_start = simple->start >> 4;
252 sample_end = simple->size;
253 start_offset = position >> 4;
254
255 if (simple->format & SIMPLE_WAVE_16BIT) {
256 voice->CTRL |= 8;
257 shift++;
258 }
259 if (simple->format & SIMPLE_WAVE_STEREO) {
260 voice->CTRL |= 4;
261 shift++;
262 }
263 if (!(simple->format & SIMPLE_WAVE_UNSIGNED))
264 voice->CTRL |= 2;
265
266 voice->LBA = simple->address.memory;
267
268 if (simple->format & SIMPLE_WAVE_LOOP) {
269 voice->CTRL |= 1;
270 voice->LBA += loop_start << shift;
271 if( start_offset >= loop_start ) {
272 voice->CSO = start_offset - loop_start;
273 voice->negCSO = 0;
274 } else {
275 voice->CSO = loop_start - start_offset;
276 voice->negCSO = 1;
277 }
278 voice->ESO = loop_end - loop_start - 1;
279 } else {
280 voice->LBA += start_offset << shift;
281 voice->CSO = sample_start;
282 voice->ESO = sample_end - 1;
283 voice->negCSO = 0;
284 }
285
286 if (voice->flags & SNDRV_TRIDENT_VFLG_RUNNING) {
287 snd_trident_stop_voice(trident, voice->number);
288 voice->flags &= ~SNDRV_TRIDENT_VFLG_RUNNING;
289 }
290
291 /* set CSO sign */
292 value = inl(TRID_REG(trident, T4D_SIGN_CSO_A));
293 if( voice->negCSO ) {
294 value |= 1 << (voice->number&31);
295 } else {
296 value &= ~(1 << (voice->number&31));
297 }
298 outl(value,TRID_REG(trident, T4D_SIGN_CSO_A));
299
300 voice->Attribute = 0;
301 snd_trident_write_voice_regs(trident, voice);
302 snd_trident_start_voice(trident, voice->number);
303 voice->flags |= SNDRV_TRIDENT_VFLG_RUNNING;
304 spin_unlock_irqrestore(&trident->reg_lock, flags);
305 snd_seq_instr_free_use(trident->synth.ilist, instr);
306}
307
bee1a5be 308static void sample_stop(struct snd_trident * trident, struct snd_trident_voice * voice, int mode)
1da177e4
LT		 309{
310 unsigned long flags;
311
312 if (!(voice->flags & SNDRV_TRIDENT_VFLG_RUNNING))
313 return;
314
315 switch (mode) {
316 default:
317 spin_lock_irqsave(&trident->reg_lock, flags);
318 snd_trident_stop_voice(trident, voice->number);
319 voice->flags &= ~SNDRV_TRIDENT_VFLG_RUNNING;
320 spin_unlock_irqrestore(&trident->reg_lock, flags);
321 break;
322 case SAMPLE_STOP_LOOP: /* disable loop only */
323 voice->CTRL &= ~1;
324 spin_lock_irqsave(&trident->reg_lock, flags);
325 outb((unsigned char) voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
326 outw((((voice->CTRL << 12) | (voice->EC & 0x0fff)) & 0xffff), CH_GVSEL_PAN_VOL_CTRL_EC);
327 spin_unlock_irqrestore(&trident->reg_lock, flags);
328 break;
329 }
330}
331
bee1a5be 332static void sample_freq(struct snd_trident * trident, struct snd_trident_voice * voice, snd_seq_frequency_t freq)
1da177e4
LT		 333{
334 unsigned long flags;
335 freq >>= 4;
336
337 spin_lock_irqsave(&trident->reg_lock, flags);
338 if (freq == 44100)
339 voice->Delta = 0xeb3;
340 else if (freq == 8000)
341 voice->Delta = 0x2ab;
342 else if (freq == 48000)
343 voice->Delta = 0x1000;
344 else
345 voice->Delta = (((freq << 12) + freq) / 48000) & 0x0000ffff;
346
347 outb((unsigned char) voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
348 if (trident->device == TRIDENT_DEVICE_ID_NX) {
349 outb((unsigned char) voice->Delta, TRID_REG(trident, CH_NX_DELTA_CSO + 3));
350 outb((unsigned char) (voice->Delta >> 8), TRID_REG(trident, CH_NX_DELTA_ESO + 3));
351 } else {
352 outw((unsigned short) voice->Delta, TRID_REG(trident, CH_DX_ESO_DELTA));
353 }
354
355 spin_unlock_irqrestore(&trident->reg_lock, flags);
356}
357
bee1a5be 358static void sample_volume(struct snd_trident * trident, struct snd_trident_voice * voice, struct snd_seq_ev_volume * volume)
1da177e4
LT		 359{
360 unsigned long flags;
361 unsigned short value;
362
363 spin_lock_irqsave(&trident->reg_lock, flags);
364 voice->GVSel = 0; /* use global music volume */
365 voice->FMC = 0x03; /* fixme: can we do something useful with FMC? */
366 if (volume->volume >= 0) {
367 volume->volume &= 0x3fff;
368 /* linear volume -> logarithmic attenuation conversion
369 * uses EC register for greater resolution (6.6 bits) than Vol register (5.3 bits)
370 * Vol register used when additional attenuation is required */
371 voice->RVol = 0;
372 voice->CVol = 0;
373 value = log_from_linear( volume->volume );
374 voice->Vol = 0;
375 voice->EC = (value & 0x3fff) >> 2;
376 if (value > 0x3fff) {
377 voice->EC |= 0xfc0;
378 if (value < 0x5f00 )
379 voice->Vol = ((value >> 8) - 0x3f) << 5;
380 else {
381 voice->Vol = 0x3ff;
382 voice->EC = 0xfff;
383 }
384 }
385 }
386 if (volume->lr >= 0) {
387 volume->lr &= 0x3fff;
388 /* approximate linear pan by attenuating channels */
389 if (volume->lr >= 0x2000) { /* attenuate left (pan right) */
390 value = 0x3fff - volume->lr;
391 for (voice->Pan = 0; voice->Pan < 63; voice->Pan++ )
392 if (value >= pan_table[voice->Pan] )
393 break;
394 } else { /* attenuate right (pan left) */
395 for (voice->Pan = 0; voice->Pan < 63; voice->Pan++ )
396 if ((unsigned int)volume->lr >= pan_table[voice->Pan] )
397 break;
398 voice->Pan |= 0x40;
399 }
400 }
401 outb((unsigned char) voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
402 outl((voice->GVSel << 31) | ((voice->Pan & 0x0000007f) << 24) |
403 ((voice->Vol & 0x000000ff) << 16) | ((voice->CTRL & 0x0000000f) << 12) |
404 (voice->EC & 0x00000fff), TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
405 value = ((voice->FMC & 0x03) << 14) | ((voice->RVol & 0x7f) << 7) | (voice->CVol & 0x7f);
406 outw(value, TRID_REG(trident, CH_DX_FMC_RVOL_CVOL));
407 spin_unlock_irqrestore(&trident->reg_lock, flags);
408}
409
bee1a5be 410static void sample_loop(struct snd_trident * trident, struct snd_trident_voice * voice, struct snd_seq_ev_loop * loop)
1da177e4
LT		 411{
412 unsigned long flags;
bee1a5be
TI		 413 struct simple_instrument *simple;
414 struct snd_seq_kinstr *instr;
1da177e4
LT		 415 unsigned int loop_start, loop_end;
416
417 instr = snd_seq_instr_find(trident->synth.ilist, &voice->instr, 0, 1);
418 if (instr == NULL)
419 return;
420 voice->instr = instr->instr; /* copy ID to speedup aliases */
421 simple = KINSTR_DATA(instr);
422
423 loop_start = loop->start >> 4;
424 loop_end = loop->end >> 4;
425
426 spin_lock_irqsave(&trident->reg_lock, flags);
427
428 voice->LBA = simple->address.memory + loop_start;
429 voice->CSO = 0;
430 voice->ESO = loop_end - loop_start - 1;
431
432 outb((unsigned char) voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
433 outb((voice->LBA >> 16), TRID_REG(trident, CH_LBA + 2));
434 outw((voice->LBA & 0xffff), TRID_REG(trident, CH_LBA));
435 if (trident->device == TRIDENT_DEVICE_ID_NX) {
436 outb((voice->ESO >> 16), TRID_REG(trident, CH_NX_DELTA_ESO + 2));
437 outw((voice->ESO & 0xffff), TRID_REG(trident, CH_NX_DELTA_ESO));
438 outb((voice->CSO >> 16), TRID_REG(trident, CH_NX_DELTA_CSO + 2));
439 outw((voice->CSO & 0xffff), TRID_REG(trident, CH_NX_DELTA_CSO));
440 } else {
441 outw((voice->ESO & 0xffff), TRID_REG(trident, CH_DX_ESO_DELTA + 2));
442 outw((voice->CSO & 0xffff), TRID_REG(trident, CH_DX_CSO_ALPHA_FMS + 2));
443 }
444
445 spin_unlock_irqrestore(&trident->reg_lock, flags);
446 snd_seq_instr_free_use(trident->synth.ilist, instr);
447}
448
bee1a5be 449static void sample_pos(struct snd_trident * trident, struct snd_trident_voice * voice, snd_seq_position_t position)
1da177e4
LT		 450{
451 unsigned long flags;
bee1a5be
TI		 452 struct simple_instrument *simple;
453 struct snd_seq_kinstr *instr;
1da177e4
LT		 454 unsigned int value;
455
456 instr = snd_seq_instr_find(trident->synth.ilist, &voice->instr, 0, 1);
457 if (instr == NULL)
458 return;
459 voice->instr = instr->instr; /* copy ID to speedup aliases */
460 simple = KINSTR_DATA(instr);
461
462 spin_lock_irqsave(&trident->reg_lock, flags);
463
464 if (simple->format & SIMPLE_WAVE_LOOP) {
465 if( position >= simple->loop_start ) {
466 voice->CSO = (position - simple->loop_start) >> 4;
467 voice->negCSO = 0;
468 } else {
469 voice->CSO = (simple->loop_start - position) >> 4;
470 voice->negCSO = 1;
471 }
472 } else {
473 voice->CSO = position >> 4;
474 voice->negCSO = 0;
475 }
476
477 /* set CSO sign */
478 value = inl(TRID_REG(trident, T4D_SIGN_CSO_A));
479 if( voice->negCSO ) {
480 value |= 1 << (voice->number&31);
481 } else {
482 value &= ~(1 << (voice->number&31));
483 }
484 outl(value,TRID_REG(trident, T4D_SIGN_CSO_A));
485
486
487 outb((unsigned char) voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
488 if (trident->device == TRIDENT_DEVICE_ID_NX) {
489 outw((voice->CSO & 0xffff), TRID_REG(trident, CH_NX_DELTA_CSO));
490 outb((voice->CSO >> 16), TRID_REG(trident, CH_NX_DELTA_CSO + 2));
491 } else {
492 outw((voice->CSO & 0xffff), TRID_REG(trident, CH_DX_CSO_ALPHA_FMS) + 2);
493 }
494
495 spin_unlock_irqrestore(&trident->reg_lock, flags);
496 snd_seq_instr_free_use(trident->synth.ilist, instr);
497}
498
bee1a5be 499static void sample_private1(struct snd_trident * trident, struct snd_trident_voice * voice, unsigned char *data)
1da177e4
LT		 500{
501}
502
503/*
504 * Memory management / sample loading
505 */
506
bee1a5be
TI		 507static int snd_trident_simple_put_sample(void *private_data,
508 struct simple_instrument * instr,
1da177e4
LT		 509 char __user *data, long len, int atomic)
510{
bee1a5be 511 struct snd_trident *trident = private_data;
1da177e4
LT		 512 int size = instr->size;
513 int shift = 0;
514
515 if (instr->format & SIMPLE_WAVE_BACKWARD ||
516 instr->format & SIMPLE_WAVE_BIDIR ||
517 instr->format & SIMPLE_WAVE_ULAW)
518 return -EINVAL; /* not supported */
519
520 if (instr->format & SIMPLE_WAVE_16BIT)
521 shift++;
522 if (instr->format & SIMPLE_WAVE_STEREO)
523 shift++;
524 size <<= shift;
525
526 if (trident->synth.current_size + size > trident->synth.max_size)
527 return -ENOMEM;
528
529 if (!access_ok(VERIFY_READ, data, size))
530 return -EFAULT;
531
532 if (trident->tlb.entries) {
bee1a5be 533 struct snd_util_memblk *memblk;
1da177e4
LT		 534 memblk = snd_trident_synth_alloc(trident, size);
535 if (memblk == NULL)
536 return -ENOMEM;
537 if (snd_trident_synth_copy_from_user(trident, memblk, 0, data, size) ) {
538 snd_trident_synth_free(trident, memblk);
539 return -EFAULT;
540 }
541 instr->address.ptr = (unsigned char*)memblk;
542 instr->address.memory = memblk->offset;
543 } else {
544 struct snd_dma_buffer dmab;
545 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
546 size, &dmab) < 0)
547 return -ENOMEM;
548
549 if (copy_from_user(dmab.area, data, size)) {
550 snd_dma_free_pages(&dmab);
551 return -EFAULT;
552 }
553 instr->address.ptr = dmab.area;
554 instr->address.memory = dmab.addr;
555 }
556
557 trident->synth.current_size += size;
558 return 0;
559}
560
bee1a5be
TI		 561static int snd_trident_simple_get_sample(void *private_data,
562 struct simple_instrument * instr,
1da177e4
LT		 563 char __user *data, long len, int atomic)
564{
bee1a5be 565 //struct snd_trident *trident = private_data;
1da177e4
LT		 566 int size = instr->size;
567 int shift = 0;
568
569 if (instr->format & SIMPLE_WAVE_16BIT)
570 shift++;
571 if (instr->format & SIMPLE_WAVE_STEREO)
572 shift++;
573 size <<= shift;
574
575 if (!access_ok(VERIFY_WRITE, data, size))
576 return -EFAULT;
577
578 /* FIXME: not implemented yet */
579
580 return -EBUSY;
581}
582
bee1a5be
TI		 583static int snd_trident_simple_remove_sample(void *private_data,
584 struct simple_instrument * instr,
1da177e4
LT		 585 int atomic)
586{
bee1a5be 587 struct snd_trident *trident = private_data;
1da177e4
LT		 588 int size = instr->size;
589
590 if (instr->format & SIMPLE_WAVE_16BIT)
591 size <<= 1;
592 if (instr->format & SIMPLE_WAVE_STEREO)
593 size <<= 1;
594
595 if (trident->tlb.entries) {
bee1a5be 596 struct snd_util_memblk *memblk = (struct snd_util_memblk *)instr->address.ptr;
1da177e4
LT		 597 if (memblk)
598 snd_trident_synth_free(trident, memblk);
599 else
600 return -EFAULT;
601 } else {
602 struct snd_dma_buffer dmab;
603 dmab.dev.type = SNDRV_DMA_TYPE_DEV;
604 dmab.dev.dev = snd_dma_pci_data(trident->pci);
605 dmab.area = instr->address.ptr;
606 dmab.addr = instr->address.memory;
607 dmab.bytes = size;
608 snd_dma_free_pages(&dmab);
609 }
610
611 trident->synth.current_size -= size;
612 if (trident->synth.current_size < 0) /* shouldn't need this check... */
613 trident->synth.current_size = 0;
614
615 return 0;
616}
617
bee1a5be 618static void select_instrument(struct snd_trident * trident, struct snd_trident_voice * v)
1da177e4 619{
bee1a5be 620 struct snd_seq_kinstr *instr;
1da177e4
LT		 621 instr = snd_seq_instr_find(trident->synth.ilist, &v->instr, 0, 1);
622 if (instr != NULL) {
623 if (instr->ops) {
624 if (!strcmp(instr->ops->instr_type, SNDRV_SEQ_INSTR_ID_SIMPLE))
625 snd_trident_simple_init(v);
626 }
627 snd_seq_instr_free_use(trident->synth.ilist, instr);
628 }
629}
630
631/*
632
633 */
634
bee1a5be 635static void event_sample(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 636{
637 if (v->sample_ops && v->sample_ops->sample_stop)
638 v->sample_ops->sample_stop(p->trident, v, SAMPLE_STOP_IMMEDIATELY);
639 v->instr.std = ev->data.sample.param.sample.std;
640 if (v->instr.std & 0xff000000) { /* private instrument */
641 v->instr.std &= 0x00ffffff;
642 v->instr.std |= (unsigned int)ev->source.client << 24;
643 }
644 v->instr.bank = ev->data.sample.param.sample.bank;
645 v->instr.prg = ev->data.sample.param.sample.prg;
646 select_instrument(p->trident, v);
647}
648
bee1a5be 649static void event_cluster(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 650{
651 if (v->sample_ops && v->sample_ops->sample_stop)
652 v->sample_ops->sample_stop(p->trident, v, SAMPLE_STOP_IMMEDIATELY);
653 v->instr.cluster = ev->data.sample.param.cluster.cluster;
654 select_instrument(p->trident, v);
655}
656
bee1a5be 657static void event_start(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 658{
659 if (v->sample_ops && v->sample_ops->sample_start)
660 v->sample_ops->sample_start(p->trident, v, ev->data.sample.param.position);
661}
662
bee1a5be 663static void event_stop(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 664{
665 if (v->sample_ops && v->sample_ops->sample_stop)
666 v->sample_ops->sample_stop(p->trident, v, ev->data.sample.param.stop_mode);
667}
668
bee1a5be 669static void event_freq(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 670{
671 if (v->sample_ops && v->sample_ops->sample_freq)
672 v->sample_ops->sample_freq(p->trident, v, ev->data.sample.param.frequency);
673}
674
bee1a5be 675static void event_volume(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 676{
677 if (v->sample_ops && v->sample_ops->sample_volume)
678 v->sample_ops->sample_volume(p->trident, v, &ev->data.sample.param.volume);
679}
680
bee1a5be 681static void event_loop(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 682{
683 if (v->sample_ops && v->sample_ops->sample_loop)
684 v->sample_ops->sample_loop(p->trident, v, &ev->data.sample.param.loop);
685}
686
bee1a5be 687static void event_position(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 688{
689 if (v->sample_ops && v->sample_ops->sample_pos)
690 v->sample_ops->sample_pos(p->trident, v, ev->data.sample.param.position);
691}
692
bee1a5be 693static void event_private1(struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v)
1da177e4
LT		 694{
695 if (v->sample_ops && v->sample_ops->sample_private1)
696 v->sample_ops->sample_private1(p->trident, v, (unsigned char *) &ev->data.sample.param.raw8);
697}
698
bee1a5be 699typedef void (trident_sample_event_handler_t) (struct snd_seq_event * ev, struct snd_trident_port * p, struct snd_trident_voice * v);
1da177e4
LT		 700
701static trident_sample_event_handler_t *trident_sample_event_handlers[9] =
702{
703 event_sample,
704 event_cluster,
705 event_start,
706 event_stop,
707 event_freq,
708 event_volume,
709 event_loop,
710 event_position,
711 event_private1
712};
713
bee1a5be 714static void snd_trident_sample_event(struct snd_seq_event * ev, struct snd_trident_port * p)
1da177e4
LT		 715{
716 int idx, voice;
bee1a5be
TI		 717 struct snd_trident *trident = p->trident;
718 struct snd_trident_voice *v;
1da177e4
LT		 719 unsigned long flags;
720
721 idx = ev->type - SNDRV_SEQ_EVENT_SAMPLE;
722 if (idx < 0 || idx > 8)
723 return;
724 for (voice = 0; voice < 64; voice++) {
725 v = &trident->synth.voices[voice];
726 if (v->use && v->client == ev->source.client &&
727 v->port == ev->source.port &&
728 v->index == ev->data.sample.channel) {
729 spin_lock_irqsave(&trident->event_lock, flags);
730 trident_sample_event_handlers[idx] (ev, p, v);
731 spin_unlock_irqrestore(&trident->event_lock, flags);
732 return;
733 }
734 }
735}
736
737/*
738
739 */
740
bee1a5be 741static void snd_trident_synth_free_voices(struct snd_trident * trident, int client, int port)
1da177e4
LT		 742{
743 int idx;
bee1a5be 744 struct snd_trident_voice *voice;
1da177e4
LT		 745
746 for (idx = 0; idx < 32; idx++) {
747 voice = &trident->synth.voices[idx];
748 if (voice->use && voice->client == client && voice->port == port)
749 snd_trident_free_voice(trident, voice);
750 }
751}
752
bee1a5be 753static int snd_trident_synth_use(void *private_data, struct snd_seq_port_subscribe * info)
1da177e4 754{
bee1a5be
TI		 755 struct snd_trident_port *port = private_data;
756 struct snd_trident *trident = port->trident;
757 struct snd_trident_voice *voice;
1da177e4
LT		 758 unsigned int idx;
759 unsigned long flags;
760
761 if (info->voices > 32)
762 return -EINVAL;
763 spin_lock_irqsave(&trident->reg_lock, flags);
764 for (idx = 0; idx < info->voices; idx++) {
765 voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_SYNTH, info->sender.client, info->sender.port);
766 if (voice == NULL) {
767 snd_trident_synth_free_voices(trident, info->sender.client, info->sender.port);
768 spin_unlock_irqrestore(&trident->reg_lock, flags);
769 return -EBUSY;
770 }
771 voice->index = idx;
772 voice->Vol = 0x3ff;
773 voice->EC = 0x0fff;
774 }
775#if 0
776 for (idx = 0; idx < info->midi_voices; idx++) {
777 port->midi_has_voices = 1;
778 voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_MIDI, info->sender.client, info->sender.port);
779 if (voice == NULL) {
780 snd_trident_synth_free_voices(trident, info->sender.client, info->sender.port);
781 spin_unlock_irqrestore(&trident->reg_lock, flags);
782 return -EBUSY;
783 }
784 voice->Vol = 0x3ff;
785 voice->EC = 0x0fff;
786 }
787#endif
788 spin_unlock_irqrestore(&trident->reg_lock, flags);
789 return 0;
790}
791
bee1a5be 792static int snd_trident_synth_unuse(void *private_data, struct snd_seq_port_subscribe * info)
1da177e4 793{
bee1a5be
TI		 794 struct snd_trident_port *port = private_data;
795 struct snd_trident *trident = port->trident;
1da177e4
LT		 796 unsigned long flags;
797
798 spin_lock_irqsave(&trident->reg_lock, flags);
799 snd_trident_synth_free_voices(trident, info->sender.client, info->sender.port);
800 spin_unlock_irqrestore(&trident->reg_lock, flags);
801 return 0;
802}
803
804/*
805
806 */
807
bee1a5be 808static void snd_trident_synth_free_private_instruments(struct snd_trident_port * p, int client)
1da177e4 809{
bee1a5be 810 struct snd_seq_instr_header ifree;
1da177e4
LT		 811
812 memset(&ifree, 0, sizeof(ifree));
813 ifree.cmd = SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE;
814 snd_seq_instr_list_free_cond(p->trident->synth.ilist, &ifree, client, 0);
815}
816
bee1a5be 817static int snd_trident_synth_event_input(struct snd_seq_event * ev, int direct, void *private_data, int atomic, int hop)
1da177e4 818{
bee1a5be 819 struct snd_trident_port *p = (struct snd_trident_port *) private_data;
1da177e4
LT		 820
821 if (p == NULL)
822 return -EINVAL;
823 if (ev->type >= SNDRV_SEQ_EVENT_SAMPLE &&
824 ev->type <= SNDRV_SEQ_EVENT_SAMPLE_PRIVATE1) {
825 snd_trident_sample_event(ev, p);
826 return 0;
827 }
828 if (ev->source.client == SNDRV_SEQ_CLIENT_SYSTEM &&
829 ev->source.port == SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE) {
830 if (ev->type == SNDRV_SEQ_EVENT_CLIENT_EXIT) {
831 snd_trident_synth_free_private_instruments(p, ev->data.addr.client);
832 return 0;
833 }
834 }
835 if (direct) {
836 if (ev->type >= SNDRV_SEQ_EVENT_INSTR_BEGIN) {
837 snd_seq_instr_event(&p->trident->synth.simple_ops.kops,
838 p->trident->synth.ilist, ev,
839 p->trident->synth.seq_client, atomic, hop);
840 return 0;
841 }
842 }
843 return 0;
844}
845
846static void snd_trident_synth_instr_notify(void *private_data,
bee1a5be 847 struct snd_seq_kinstr * instr,
1da177e4
LT		 848 int what)
849{
850 int idx;
bee1a5be
TI		 851 struct snd_trident *trident = private_data;
852 struct snd_trident_voice *pvoice;
1da177e4
LT		 853 unsigned long flags;
854
855 spin_lock_irqsave(&trident->event_lock, flags);
856 for (idx = 0; idx < 64; idx++) {
857 pvoice = &trident->synth.voices[idx];
858 if (pvoice->use && !memcmp(&pvoice->instr, &instr->instr, sizeof(pvoice->instr))) {
859 if (pvoice->sample_ops && pvoice->sample_ops->sample_stop) {
860 pvoice->sample_ops->sample_stop(trident, pvoice, SAMPLE_STOP_IMMEDIATELY);
861 } else {
862 snd_trident_stop_voice(trident, pvoice->number);
863 pvoice->flags &= ~SNDRV_TRIDENT_VFLG_RUNNING;
864 }
865 }
866 }
867 spin_unlock_irqrestore(&trident->event_lock, flags);
868}
869
870/*
871
872 */
873
874static void snd_trident_synth_free_port(void *private_data)
875{
bee1a5be 876 struct snd_trident_port *p = (struct snd_trident_port *) private_data;
1da177e4
LT		 877
878 if (p)
879 snd_midi_channel_free_set(p->chset);
880}
881
bee1a5be 882static int snd_trident_synth_create_port(struct snd_trident * trident, int idx)
1da177e4 883{
bee1a5be
TI		 884 struct snd_trident_port *p;
885 struct snd_seq_port_callback callbacks;
1da177e4
LT		 886 char name[32];
887 char *str;
888 int result;
889
890 p = &trident->synth.seq_ports[idx];
891 p->chset = snd_midi_channel_alloc_set(16);
892 if (p->chset == NULL)
893 return -ENOMEM;
894 p->chset->private_data = p;
895 p->trident = trident;
896 p->client = trident->synth.seq_client;
897
898 memset(&callbacks, 0, sizeof(callbacks));
899 callbacks.owner = THIS_MODULE;
900 callbacks.use = snd_trident_synth_use;
901 callbacks.unuse = snd_trident_synth_unuse;
902 callbacks.event_input = snd_trident_synth_event_input;
903 callbacks.private_free = snd_trident_synth_free_port;
904 callbacks.private_data = p;
905
906 str = "???";
907 switch (trident->device) {
908 case TRIDENT_DEVICE_ID_DX: str = "Trident 4DWave-DX"; break;
909 case TRIDENT_DEVICE_ID_NX: str = "Trident 4DWave-NX"; break;
910 case TRIDENT_DEVICE_ID_SI7018: str = "SiS 7018"; break;
911 }
912 sprintf(name, "%s port %i", str, idx);
913 p->chset->port = snd_seq_event_port_attach(trident->synth.seq_client,
914 &callbacks,
915 SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
916 SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
917 SNDRV_SEQ_PORT_TYPE_SYNTH,
918 16, 0,
919 name);
920 if (p->chset->port < 0) {
921 result = p->chset->port;
922 snd_trident_synth_free_port(p);
923 return result;
924 }
925 p->port = p->chset->port;
926 return 0;
927}
928
929/*
930
931 */
932
bee1a5be 933static int snd_trident_synth_new_device(struct snd_seq_device *dev)
1da177e4 934{
bee1a5be 935 struct snd_trident *trident;
1da177e4 936 int client, i;
bee1a5be
TI		 937 struct snd_seq_port_subscribe sub;
938 struct snd_simple_ops *simpleops;
1da177e4
LT		 939 char *str;
940
bee1a5be 941 trident = *(struct snd_trident **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
1da177e4
LT		 942 if (trident == NULL)
943 return -EINVAL;
944
945 trident->synth.seq_client = -1;
946
947 /* allocate new client */
1da177e4
LT		 948 str = "???";
949 switch (trident->device) {
950 case TRIDENT_DEVICE_ID_DX: str = "Trident 4DWave-DX"; break;
951 case TRIDENT_DEVICE_ID_NX: str = "Trident 4DWave-NX"; break;
952 case TRIDENT_DEVICE_ID_SI7018: str = "SiS 7018"; break;
953 }
7b6d9245
CL		 954 client = trident->synth.seq_client =
955 snd_seq_create_kernel_client(trident->card, 1, str);
956 if (client < 0)
957 return client;
1da177e4
LT		 958
959 for (i = 0; i < 4; i++)
960 snd_trident_synth_create_port(trident, i);
961
962 trident->synth.ilist = snd_seq_instr_list_new();
963 if (trident->synth.ilist == NULL) {
964 snd_seq_delete_kernel_client(client);
965 trident->synth.seq_client = -1;
966 return -ENOMEM;
967 }
968 trident->synth.ilist->flags = SNDRV_SEQ_INSTR_FLG_DIRECT;
969
970 simpleops = &trident->synth.simple_ops;
971 snd_seq_simple_init(simpleops, trident, NULL);
972 simpleops->put_sample = snd_trident_simple_put_sample;
973 simpleops->get_sample = snd_trident_simple_get_sample;
974 simpleops->remove_sample = snd_trident_simple_remove_sample;
975 simpleops->notify = snd_trident_synth_instr_notify;
976
977 memset(&sub, 0, sizeof(sub));
978 sub.sender.client = SNDRV_SEQ_CLIENT_SYSTEM;
979 sub.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE;
980 sub.dest.client = client;
981 sub.dest.port = 0;
982 snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &sub);
983
984 return 0;
985}
986
bee1a5be 987static int snd_trident_synth_delete_device(struct snd_seq_device *dev)
1da177e4 988{
bee1a5be 989 struct snd_trident *trident;
1da177e4 990
bee1a5be 991 trident = *(struct snd_trident **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
1da177e4
LT		 992 if (trident == NULL)
993 return -EINVAL;
994
995 if (trident->synth.seq_client >= 0) {
996 snd_seq_delete_kernel_client(trident->synth.seq_client);
997 trident->synth.seq_client = -1;
998 }
999 if (trident->synth.ilist)
1000 snd_seq_instr_list_free(&trident->synth.ilist);
1001 return 0;
1002}
1003
1004static int __init alsa_trident_synth_init(void)
1005{
bee1a5be 1006 static struct snd_seq_dev_ops ops =
1da177e4
LT		 1007 {
1008 snd_trident_synth_new_device,
1009 snd_trident_synth_delete_device
1010 };
1011
1012 return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_TRIDENT, &ops,
bee1a5be 1013 sizeof(struct snd_trident *));
1da177e4
LT		 1014}
1015
1016static void __exit alsa_trident_synth_exit(void)
1017{
1018 snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_TRIDENT);
1019}
1020
1021module_init(alsa_trident_synth_init)
1022module_exit(alsa_trident_synth_exit)
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