← Back to branch summary

~ubuntu-branches/ubuntu/precise/linux-lowlatency/precise

« back to all changes in this revision

Viewing changes to sound/isa/gus/gus_reset.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

Show diffs side-by-side

added added

removed removed

Lines of Context:
sound/isa/gus/gus_reset.c
 
1
/*
 
2
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 
3
 *
 
4
 *
 
5
 *   This program is free software; you can redistribute it and/or modify
 
6
 *   it under the terms of the GNU General Public License as published by
 
7
 *   the Free Software Foundation; either version 2 of the License, or
 
8
 *   (at your option) any later version.
 
9
 *
 
10
 *   This program is distributed in the hope that it will be useful,
 
11
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
13
 *   GNU General Public License for more details.
 
14
 *
 
15
 *   You should have received a copy of the GNU General Public License
 
16
 *   along with this program; if not, write to the Free Software
 
17
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 
18
 *
 
19
 */
 
20
 
 
21
#include <linux/delay.h>
 
22
#include <linux/interrupt.h>
 
23
#include <linux/time.h>
 
24
#include <sound/core.h>
 
25
#include <sound/gus.h>
 
26
 
 
27
extern void snd_gf1_timers_init(struct snd_gus_card * gus);
 
28
extern void snd_gf1_timers_done(struct snd_gus_card * gus);
 
29
extern int snd_gf1_synth_init(struct snd_gus_card * gus);
 
30
extern void snd_gf1_synth_done(struct snd_gus_card * gus);
 
31
 
 
32
/*
 
33
 *  ok.. default interrupt handlers...
 
34
 */
 
35
 
 
36
static void snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)
 
37
{
 
38
        snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
 
39
}
 
40
 
 
41
static void snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)
 
42
{
 
43
        snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
 
44
}
 
45
 
 
46
static void snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)
 
47
{
 
48
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
 
49
}
 
50
 
 
51
static void snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)
 
52
{
 
53
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
 
54
}
 
55
 
 
56
static void snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus, struct snd_gus_voice * voice)
 
57
{
 
58
        snd_gf1_i_ctrl_stop(gus, 0x00);
 
59
        snd_gf1_i_ctrl_stop(gus, 0x0d);
 
60
}
 
61
 
 
62
static void snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)
 
63
{
 
64
        snd_gf1_i_write8(gus, 0x41, 0x00);
 
65
}
 
66
 
 
67
static void snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)
 
68
{
 
69
        snd_gf1_i_write8(gus, 0x49, 0x00);
 
70
}
 
71
 
 
72
void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what)
 
73
{
 
74
        if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
 
75
                gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
 
76
        if (what & SNDRV_GF1_HANDLER_MIDI_IN)
 
77
                gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
 
78
        if (what & SNDRV_GF1_HANDLER_TIMER1)
 
79
                gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
 
80
        if (what & SNDRV_GF1_HANDLER_TIMER2)
 
81
                gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
 
82
        if (what & SNDRV_GF1_HANDLER_VOICE) {
 
83
                struct snd_gus_voice *voice;
 
84
                
 
85
                voice = &gus->gf1.voices[what & 0xffff];
 
86
                voice->handler_wave =
 
87
                voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
 
88
                voice->handler_effect = NULL;
 
89
                voice->volume_change = NULL;
 
90
        }
 
91
        if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
 
92
                gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
 
93
        if (what & SNDRV_GF1_HANDLER_DMA_READ)
 
94
                gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
 
95
}
 
96
 
 
97
/*
 
98
 
 
99
 */
 
100
 
 
101
static void snd_gf1_clear_regs(struct snd_gus_card * gus)
 
102
{
 
103
        unsigned long flags;
 
104
 
 
105
        spin_lock_irqsave(&gus->reg_lock, flags);
 
106
        inb(GUSP(gus, IRQSTAT));
 
107
        snd_gf1_write8(gus, 0x41, 0);   /* DRAM DMA Control Register */
 
108
        snd_gf1_write8(gus, 0x45, 0);   /* Timer Control */
 
109
        snd_gf1_write8(gus, 0x49, 0);   /* Sampling Control Register */
 
110
        spin_unlock_irqrestore(&gus->reg_lock, flags);
 
111
}
 
112
 
 
113
static void snd_gf1_look_regs(struct snd_gus_card * gus)
 
114
{
 
115
        unsigned long flags;
 
116
 
 
117
        spin_lock_irqsave(&gus->reg_lock, flags);
 
118
        snd_gf1_look8(gus, 0x41);       /* DRAM DMA Control Register */
 
119
        snd_gf1_look8(gus, 0x49);       /* Sampling Control Register */
 
120
        inb(GUSP(gus, IRQSTAT));
 
121
        snd_gf1_read8(gus, 0x0f);       /* IRQ Source Register */
 
122
        spin_unlock_irqrestore(&gus->reg_lock, flags);
 
123
}
 
124
 
 
125
/*
 
126
 *  put selected GF1 voices to initial stage...
 
127
 */
 
128
 
 
129
void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice)
 
130
{
 
131
        unsigned long flags;
 
132
 
 
133
        spin_lock_irqsave(&gus->reg_lock, flags);
 
134
        snd_gf1_select_voice(gus, voice);
 
135
#if 0
 
136
        printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
 
137
#endif
 
138
        snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 
139
        snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 
140
        spin_unlock_irqrestore(&gus->reg_lock, flags);
 
141
}
 
142
 
 
143
void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice)
 
144
{
 
145
        unsigned long flags;
 
146
 
 
147
        spin_lock_irqsave(&gus->reg_lock, flags);
 
148
        snd_gf1_select_voice(gus, voice);
 
149
#if 0
 
150
        printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
 
151
#endif
 
152
        snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 
153
        snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 
154
        if (gus->gf1.enh_mode)
 
155
                snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
 
156
        spin_unlock_irqrestore(&gus->reg_lock, flags);
 
157
#if 0
 
158
        snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
 
159
        snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
 
160
#endif
 
161
}
 
162
 
 
163
static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min,
 
164
                                 unsigned short v_max)
 
165
{
 
166
        unsigned long flags;
 
167
        unsigned int daddr;
 
168
        unsigned short i, w_16;
 
169
 
 
170
        daddr = gus->gf1.default_voice_address << 4;
 
171
        for (i = v_min; i <= v_max; i++) {
 
172
#if 0
 
173
                if (gus->gf1.syn_voices)
 
174
                        gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
 
175
#endif
 
176
                spin_lock_irqsave(&gus->reg_lock, flags);
 
177
                snd_gf1_select_voice(gus, i);
 
178
                snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);   /* Voice Control Register = voice stop */
 
179
                snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);    /* Volume Ramp Control Register = ramp off */
 
180
                if (gus->gf1.enh_mode)
 
181
                        snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82);  /* Deactivate voice */
 
182
                w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
 
183
                snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
 
184
                snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
 
185
                snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
 
186
                snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
 
187
                snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
 
188
                snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
 
189
                snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
 
190
                snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
 
191
                snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
 
192
                if (gus->gf1.enh_mode) {
 
193
                        snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
 
194
                        snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
 
195
                        snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
 
196
                }
 
197
                spin_unlock_irqrestore(&gus->reg_lock, flags);
 
198
#if 0
 
199
                snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
 
200
                snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
 
201
#endif
 
202
        }
 
203
}
 
204
 
 
205
void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max)
 
206
{
 
207
        unsigned long flags;
 
208
        short i, ramp_ok;
 
209
        unsigned short ramp_end;
 
210
 
 
211
        if (!in_interrupt()) {  /* this can't be done in interrupt */
 
212
                for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
 
213
                        spin_lock_irqsave(&gus->reg_lock, flags);
 
214
                        snd_gf1_select_voice(gus, i);
 
215
                        ramp_end = snd_gf1_read16(gus, 9) >> 8;
 
216
                        if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
 
217
                                ramp_ok++;
 
218
                                snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20);      /* ramp rate */
 
219
                                snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);   /* ramp start */
 
220
                                snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
 
221
                                snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
 
222
                                if (gus->gf1.enh_mode) {
 
223
                                        snd_gf1_delay(gus);
 
224
                                        snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
 
225
                                }
 
226
                        }
 
227
                        spin_unlock_irqrestore(&gus->reg_lock, flags);
 
228
                }
 
229
                msleep_interruptible(50);
 
230
        }
 
231
        snd_gf1_clear_voices(gus, v_min, v_max);
 
232
}
 
233
 
 
234
static void snd_gf1_alloc_voice_use(struct snd_gus_card * gus, 
 
235
                                    struct snd_gus_voice * pvoice,
 
236
                                    int type, int client, int port)
 
237
{
 
238
        pvoice->use = 1;
 
239
        switch (type) {
 
240
        case SNDRV_GF1_VOICE_TYPE_PCM:
 
241
                gus->gf1.pcm_alloc_voices++;
 
242
                pvoice->pcm = 1;
 
243
                break;
 
244
        case SNDRV_GF1_VOICE_TYPE_SYNTH:
 
245
                pvoice->synth = 1;
 
246
                pvoice->client = client;
 
247
                pvoice->port = port;
 
248
                break;
 
249
        case SNDRV_GF1_VOICE_TYPE_MIDI:
 
250
                pvoice->midi = 1;
 
251
                pvoice->client = client;
 
252
                pvoice->port = port;
 
253
                break;
 
254
        }
 
255
}
 
256
 
 
257
struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port)
 
258
{
 
259
        struct snd_gus_voice *pvoice;
 
260
        unsigned long flags;
 
261
        int idx;
 
262
 
 
263
        spin_lock_irqsave(&gus->voice_alloc, flags);
 
264
        if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
 
265
                if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
 
266
                        spin_unlock_irqrestore(&gus->voice_alloc, flags);
 
267
                        return NULL;
 
268
                }
 
269
        }
 
270
        for (idx = 0; idx < 32; idx++) {
 
271
                pvoice = &gus->gf1.voices[idx];
 
272
                if (!pvoice->use) {
 
273
                        snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
 
274
                        spin_unlock_irqrestore(&gus->voice_alloc, flags);
 
275
                        return pvoice;
 
276
                }
 
277
        } 
 
278
        for (idx = 0; idx < 32; idx++) {
 
279
                pvoice = &gus->gf1.voices[idx];
 
280
                if (pvoice->midi && !pvoice->client) {
 
281
                        snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
 
282
                        snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
 
283
                        spin_unlock_irqrestore(&gus->voice_alloc, flags);
 
284
                        return pvoice;
 
285
                }
 
286
        } 
 
287
        spin_unlock_irqrestore(&gus->voice_alloc, flags);
 
288
        return NULL;
 
289
}
 
290
 
 
291
void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice)
 
292
{
 
293
        unsigned long flags;
 
294
        void (*private_free)(struct snd_gus_voice *voice);
 
295
        void *private_data;
 
296
 
 
297
        if (voice == NULL || !voice->use)
 
298
                return;
 
299
        snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
 
300
        snd_gf1_clear_voices(gus, voice->number, voice->number);
 
301
        spin_lock_irqsave(&gus->voice_alloc, flags);
 
302
        private_free = voice->private_free;
 
303
        private_data = voice->private_data;
 
304
        voice->private_free = NULL;
 
305
        voice->private_data = NULL;
 
306
        if (voice->pcm)
 
307
                gus->gf1.pcm_alloc_voices--;
 
308
        voice->use = voice->pcm = 0;
 
309
        voice->sample_ops = NULL;
 
310
        spin_unlock_irqrestore(&gus->voice_alloc, flags);
 
311
        if (private_free)
 
312
                private_free(voice);
 
313
}
 
314
 
 
315
/*
 
316
 *  call this function only by start of driver
 
317
 */
 
318
 
 
319
int snd_gf1_start(struct snd_gus_card * gus)
 
320
{
 
321
        unsigned long flags;
 
322
        unsigned int i;
 
323
 
 
324
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);   /* reset GF1 */
 
325
        udelay(160);
 
326
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* disable IRQ & DAC */
 
327
        udelay(160);
 
328
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
 
329
 
 
330
        snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
 
331
        for (i = 0; i < 32; i++) {
 
332
                gus->gf1.voices[i].number = i;
 
333
                snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
 
334
        }
 
335
 
 
336
        snd_gf1_uart_cmd(gus, 0x03);    /* huh.. this cleanup took me some time... */
 
337
 
 
338
        if (gus->gf1.enh_mode) {        /* enhanced mode !!!! */
 
339
                snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
 
340
                snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
 
341
        }
 
342
        snd_gf1_clear_regs(gus);
 
343
        snd_gf1_select_active_voices(gus);
 
344
        snd_gf1_delay(gus);
 
345
        gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
 
346
        /* initialize LFOs & clear LFOs memory */
 
347
        if (gus->gf1.enh_mode && gus->gf1.memory) {
 
348
                gus->gf1.hw_lfo = 1;
 
349
                gus->gf1.default_voice_address += 1024;
 
350
        } else {
 
351
                gus->gf1.sw_lfo = 1;
 
352
        }
 
353
#if 0
 
354
        snd_gf1_lfo_init(gus);
 
355
#endif
 
356
        if (gus->gf1.memory > 0)
 
357
                for (i = 0; i < 4; i++)
 
358
                        snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
 
359
        snd_gf1_clear_regs(gus);
 
360
        snd_gf1_clear_voices(gus, 0, 31);
 
361
        snd_gf1_look_regs(gus);
 
362
        udelay(160);
 
363
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7);   /* Reset Register = IRQ enable, DAC enable */
 
364
        udelay(160);
 
365
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7);   /* Reset Register = IRQ enable, DAC enable */
 
366
        if (gus->gf1.enh_mode) {        /* enhanced mode !!!! */
 
367
                snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
 
368
                snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
 
369
        }
 
370
        while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
 
371
 
 
372
        spin_lock_irqsave(&gus->reg_lock, flags);
 
373
        outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
 
374
        outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
 
375
        spin_unlock_irqrestore(&gus->reg_lock, flags);
 
376
 
 
377
        snd_gf1_timers_init(gus);
 
378
        snd_gf1_look_regs(gus);
 
379
        snd_gf1_mem_init(gus);
 
380
        snd_gf1_mem_proc_init(gus);
 
381
#ifdef CONFIG_SND_DEBUG
 
382
        snd_gus_irq_profile_init(gus);
 
383
#endif
 
384
 
 
385
#if 0
 
386
        if (gus->pnp_flag) {
 
387
                if (gus->chip.playback_fifo_size > 0)
 
388
                        snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
 
389
                if (gus->chip.record_fifo_size > 0)
 
390
                        snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
 
391
                snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
 
392
        }
 
393
#endif
 
394
 
 
395
        return 0;
 
396
}
 
397
 
 
398
/*
 
399
 *  call this function only by shutdown of driver
 
400
 */
 
401
 
 
402
int snd_gf1_stop(struct snd_gus_card * gus)
 
403
{
 
404
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
 
405
        snd_gf1_stop_voices(gus, 0, 31);                /* stop all voices */
 
406
        snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* disable IRQ & DAC */
 
407
        snd_gf1_timers_done(gus);
 
408
        snd_gf1_mem_done(gus);
 
409
#if 0
 
410
        snd_gf1_lfo_done(gus);
 
411
#endif
 
412
        return 0;
 
413
}