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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [sound/] [oss/] [sb_card.c] - Blame information for rev 3

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Line No. Rev Author Line
1 3 xianfeng
/*
2
 * sound/oss/sb_card.c
3
 *
4
 * Detection routine for the ISA Sound Blaster and compatable sound
5
 * cards.
6
 *
7
 * This file is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
8
 * Version 2 (June 1991). See the "COPYING" file distributed with this
9
 * software for more info.
10
 *
11
 * This is a complete rewrite of the detection routines. This was
12
 * prompted by the PnP API change during v2.5 and the ugly state the
13
 * code was in.
14
 *
15
 * Copyright (C) by Paul Laufer 2002. Based on code originally by
16
 * Hannu Savolainen which was modified by many others over the
17
 * years. Authors specifically mentioned in the previous version were:
18
 * Daniel Stone, Alessandro Zummo, Jeff Garzik, Arnaldo Carvalho de
19
 * Melo, Daniel Church, and myself.
20
 *
21
 * 02-05-2003 Original Release, Paul Laufer <paul@laufernet.com>
22
 * 02-07-2003 Bug made it into first release. Take two.
23
 */
24
 
25
#include <linux/module.h>
26
#include <linux/moduleparam.h>
27
#include <linux/init.h>
28
#include "sound_config.h"
29
#include "sb_mixer.h"
30
#include "sb.h"
31
#ifdef CONFIG_PNP
32
#include <linux/pnp.h>
33
#endif /* CONFIG_PNP */
34
#include "sb_card.h"
35
 
36
MODULE_DESCRIPTION("OSS Soundblaster ISA PnP and legacy sound driver");
37
MODULE_LICENSE("GPL");
38
 
39
extern void *smw_free;
40
 
41
static int __initdata mpu_io    = 0;
42
static int __initdata io        = -1;
43
static int __initdata irq       = -1;
44
static int __initdata dma       = -1;
45
static int __initdata dma16     = -1;
46
static int __initdata type      = 0; /* Can set this to a specific card type */
47
static int __initdata esstype   = 0; /* ESS chip type */
48
static int __initdata acer      = 0; /* Do acer notebook init? */
49
static int __initdata sm_games  = 0; /* Logitech soundman games? */
50
 
51
static struct sb_card_config *legacy = NULL;
52
 
53
#ifdef CONFIG_PNP
54
static int pnp_registered;
55
static int __initdata pnp       = 1;
56
/*
57
static int __initdata uart401   = 0;
58
*/
59
#else
60
static int __initdata pnp       = 0;
61
#endif
62
 
63
module_param(io, int, 000);
64
MODULE_PARM_DESC(io,       "Soundblaster i/o base address (0x220,0x240,0x260,0x280)");
65
module_param(irq, int, 000);
66
MODULE_PARM_DESC(irq,      "IRQ (5,7,9,10)");
67
module_param(dma, int, 000);
68
MODULE_PARM_DESC(dma,      "8-bit DMA channel (0,1,3)");
69
module_param(dma16, int, 000);
70
MODULE_PARM_DESC(dma16,    "16-bit DMA channel (5,6,7)");
71
module_param(mpu_io, int, 000);
72
MODULE_PARM_DESC(mpu_io,   "MPU base address");
73
module_param(type, int, 000);
74
MODULE_PARM_DESC(type,     "You can set this to specific card type (doesn't " \
75
                 "work with pnp)");
76
module_param(sm_games, int, 000);
77
MODULE_PARM_DESC(sm_games, "Enable support for Logitech soundman games " \
78
                 "(doesn't work with pnp)");
79
module_param(esstype, int, 000);
80
MODULE_PARM_DESC(esstype,  "ESS chip type (doesn't work with pnp)");
81
module_param(acer, int, 000);
82
MODULE_PARM_DESC(acer,     "Set this to detect cards in some ACER notebooks "\
83
                 "(doesn't work with pnp)");
84
 
85
#ifdef CONFIG_PNP
86
module_param(pnp, int, 000);
87
MODULE_PARM_DESC(pnp,     "Went set to 0 will disable detection using PnP. "\
88
                  "Default is 1.\n");
89
/* Not done yet.... */
90
/*
91
module_param(uart401, int, 000);
92
MODULE_PARM_DESC(uart401,  "When set to 1, will attempt to detect and enable"\
93
                 "the mpu on some clones");
94
*/
95
#endif /* CONFIG_PNP */
96
 
97
/* OSS subsystem card registration shared by PnP and legacy routines */
98
static int sb_register_oss(struct sb_card_config *scc, struct sb_module_options *sbmo)
99
{
100
        if (!request_region(scc->conf.io_base, 16, "soundblaster")) {
101
                printk(KERN_ERR "sb: ports busy.\n");
102
                kfree(scc);
103
                return -EBUSY;
104
        }
105
 
106
        if (!sb_dsp_detect(&scc->conf, 0, 0, sbmo)) {
107
                release_region(scc->conf.io_base, 16);
108
                printk(KERN_ERR "sb: Failed DSP Detect.\n");
109
                kfree(scc);
110
                return -ENODEV;
111
        }
112
        if(!sb_dsp_init(&scc->conf, THIS_MODULE)) {
113
                printk(KERN_ERR "sb: Failed DSP init.\n");
114
                kfree(scc);
115
                return -ENODEV;
116
        }
117
        if(scc->mpucnf.io_base > 0) {
118
                scc->mpu = 1;
119
                printk(KERN_INFO "sb: Turning on MPU\n");
120
                if(!probe_sbmpu(&scc->mpucnf, THIS_MODULE))
121
                        scc->mpu = 0;
122
        }
123
 
124
        return 1;
125
}
126
 
127
static void sb_unload(struct sb_card_config *scc)
128
{
129
        sb_dsp_unload(&scc->conf, 0);
130
        if(scc->mpu)
131
                unload_sbmpu(&scc->mpucnf);
132
        kfree(scc);
133
}
134
 
135
/* Register legacy card with OSS subsystem */
136
static int __init sb_init_legacy(void)
137
{
138
        struct sb_module_options sbmo = {0};
139
 
140
        if((legacy = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
141
                printk(KERN_ERR "sb: Error: Could not allocate memory\n");
142
                return -ENOMEM;
143
        }
144
 
145
        legacy->conf.io_base      = io;
146
        legacy->conf.irq          = irq;
147
        legacy->conf.dma          = dma;
148
        legacy->conf.dma2         = dma16;
149
        legacy->conf.card_subtype = type;
150
 
151
        legacy->mpucnf.io_base = mpu_io;
152
        legacy->mpucnf.irq     = -1;
153
        legacy->mpucnf.dma     = -1;
154
        legacy->mpucnf.dma2    = -1;
155
 
156
        sbmo.esstype  = esstype;
157
        sbmo.sm_games = sm_games;
158
        sbmo.acer     = acer;
159
 
160
        return sb_register_oss(legacy, &sbmo);
161
}
162
 
163
#ifdef CONFIG_PNP
164
 
165
/* Populate the OSS subsystem structures with information from PnP */
166
static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
167
{
168
        scc->conf.io_base   = -1;
169
        scc->conf.irq       = -1;
170
        scc->conf.dma       = -1;
171
        scc->conf.dma2      = -1;
172
        scc->mpucnf.io_base = -1;
173
        scc->mpucnf.irq     = -1;
174
        scc->mpucnf.dma     = -1;
175
        scc->mpucnf.dma2    = -1;
176
 
177
        /* All clones layout their PnP tables differently and some use
178
           different logical devices for the MPU */
179
        if(!strncmp("CTL",scc->card_id,3)) {
180
                scc->conf.io_base   = pnp_port_start(dev,0);
181
                scc->conf.irq       = pnp_irq(dev,0);
182
                scc->conf.dma       = pnp_dma(dev,0);
183
                scc->conf.dma2      = pnp_dma(dev,1);
184
                scc->mpucnf.io_base = pnp_port_start(dev,1);
185
                return;
186
        }
187
        if(!strncmp("tBA",scc->card_id,3)) {
188
                scc->conf.io_base   = pnp_port_start(dev,0);
189
                scc->conf.irq       = pnp_irq(dev,0);
190
                scc->conf.dma       = pnp_dma(dev,0);
191
                scc->conf.dma2      = pnp_dma(dev,1);
192
                return;
193
        }
194
        if(!strncmp("ESS",scc->card_id,3)) {
195
                scc->conf.io_base   = pnp_port_start(dev,0);
196
                scc->conf.irq       = pnp_irq(dev,0);
197
                scc->conf.dma       = pnp_dma(dev,0);
198
                scc->conf.dma2      = pnp_dma(dev,1);
199
                scc->mpucnf.io_base = pnp_port_start(dev,2);
200
                return;
201
        }
202
        if(!strncmp("CMI",scc->card_id,3)) {
203
                scc->conf.io_base = pnp_port_start(dev,0);
204
                scc->conf.irq     = pnp_irq(dev,0);
205
                scc->conf.dma     = pnp_dma(dev,0);
206
                scc->conf.dma2    = pnp_dma(dev,1);
207
                return;
208
        }
209
        if(!strncmp("RWB",scc->card_id,3)) {
210
                scc->conf.io_base = pnp_port_start(dev,0);
211
                scc->conf.irq     = pnp_irq(dev,0);
212
                scc->conf.dma     = pnp_dma(dev,0);
213
                return;
214
        }
215
        if(!strncmp("ALS",scc->card_id,3)) {
216
                if(!strncmp("ALS0007",scc->card_id,7)) {
217
                        scc->conf.io_base = pnp_port_start(dev,0);
218
                        scc->conf.irq     = pnp_irq(dev,0);
219
                        scc->conf.dma     = pnp_dma(dev,0);
220
                } else {
221
                        scc->conf.io_base = pnp_port_start(dev,0);
222
                        scc->conf.irq     = pnp_irq(dev,0);
223
                        scc->conf.dma     = pnp_dma(dev,1);
224
                        scc->conf.dma2    = pnp_dma(dev,0);
225
                }
226
                return;
227
        }
228
        if(!strncmp("RTL",scc->card_id,3)) {
229
                scc->conf.io_base = pnp_port_start(dev,0);
230
                scc->conf.irq     = pnp_irq(dev,0);
231
                scc->conf.dma     = pnp_dma(dev,1);
232
                scc->conf.dma2    = pnp_dma(dev,0);
233
        }
234
}
235
 
236
static unsigned int sb_pnp_devices;
237
 
238
/* Probe callback function for the PnP API */
239
static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
240
{
241
        struct sb_card_config *scc;
242
        struct sb_module_options sbmo = {0}; /* Default to 0 for PnP */
243
        struct pnp_dev *dev = pnp_request_card_device(card, card_id->devs[0].id, NULL);
244
 
245
        if(!dev){
246
                return -EBUSY;
247
        }
248
 
249
        if((scc = kzalloc(sizeof(struct sb_card_config), GFP_KERNEL)) == NULL) {
250
                printk(KERN_ERR "sb: Error: Could not allocate memory\n");
251
                return -ENOMEM;
252
        }
253
 
254
        printk(KERN_INFO "sb: PnP: Found Card Named = \"%s\", Card PnP id = " \
255
               "%s, Device PnP id = %s\n", card->card->name, card_id->id,
256
               dev->id->id);
257
 
258
        scc->card_id = card_id->id;
259
        scc->dev_id = dev->id->id;
260
        sb_dev2cfg(dev, scc);
261
 
262
        printk(KERN_INFO "sb: PnP:      Detected at: io=0x%x, irq=%d, " \
263
               "dma=%d, dma16=%d\n", scc->conf.io_base, scc->conf.irq,
264
               scc->conf.dma, scc->conf.dma2);
265
 
266
        pnp_set_card_drvdata(card, scc);
267
        sb_pnp_devices++;
268
 
269
        return sb_register_oss(scc, &sbmo);
270
}
271
 
272
static void sb_pnp_remove(struct pnp_card_link *card)
273
{
274
        struct sb_card_config *scc = pnp_get_card_drvdata(card);
275
 
276
        if(!scc)
277
                return;
278
 
279
        printk(KERN_INFO "sb: PnP: Removing %s\n", scc->card_id);
280
 
281
        sb_unload(scc);
282
}
283
 
284
static struct pnp_card_driver sb_pnp_driver = {
285
        .name          = "OSS SndBlstr", /* 16 character limit */
286
        .id_table      = sb_pnp_card_table,
287
        .probe         = sb_pnp_probe,
288
        .remove        = sb_pnp_remove,
289
};
290
MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
291
#endif /* CONFIG_PNP */
292
 
293
static void sb_unregister_all(void)
294
{
295
#ifdef CONFIG_PNP
296
        if (pnp_registered)
297
                pnp_unregister_card_driver(&sb_pnp_driver);
298
#endif
299
}
300
 
301
static int __init sb_init(void)
302
{
303
        int lres = 0;
304
        int pres = 0;
305
 
306
        printk(KERN_INFO "sb: Init: Starting Probe...\n");
307
 
308
        if(io != -1 && irq != -1 && dma != -1) {
309
                printk(KERN_INFO "sb: Probing legacy card with io=%x, "\
310
                       "irq=%d, dma=%d, dma16=%d\n",io, irq, dma, dma16);
311
                lres = sb_init_legacy();
312
        } else if((io != -1 || irq != -1 || dma != -1) ||
313
                  (!pnp && (io == -1 && irq == -1 && dma == -1)))
314
                printk(KERN_ERR "sb: Error: At least io, irq, and dma "\
315
                       "must be set for legacy cards.\n");
316
 
317
#ifdef CONFIG_PNP
318
        if(pnp) {
319
                int err = pnp_register_card_driver(&sb_pnp_driver);
320
                if (!err)
321
                        pnp_registered = 1;
322
                pres = sb_pnp_devices;
323
        }
324
#endif
325
        printk(KERN_INFO "sb: Init: Done\n");
326
 
327
        /* If either PnP or Legacy registered a card then return
328
         * success */
329
        if (pres == 0 && lres <= 0) {
330
                sb_unregister_all();
331
                return -ENODEV;
332
        }
333
        return 0;
334
}
335
 
336
static void __exit sb_exit(void)
337
{
338
        printk(KERN_INFO "sb: Unloading...\n");
339
 
340
        /* Unload legacy card */
341
        if (legacy) {
342
                printk (KERN_INFO "sb: Unloading legacy card\n");
343
                sb_unload(legacy);
344
        }
345
 
346
        sb_unregister_all();
347
 
348
        vfree(smw_free);
349
        smw_free = NULL;
350
}
351
 
352
module_init(sb_init);
353
module_exit(sb_exit);

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