Merge branch 'fix/misc' into topic/misc
[linux-2.6.git] / sound / oss / sb_card.c
1 /*
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);