[ALSA] unregister platform devices
[linux-2.6.git] / sound / isa / sb / sb8.c
1 /*
2  *  Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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 <linux/init.h>
24 #include <linux/err.h>
25 #include <linux/platform_device.h>
26 #include <linux/slab.h>
27 #include <linux/ioport.h>
28 #include <linux/moduleparam.h>
29 #include <sound/core.h>
30 #include <sound/sb.h>
31 #include <sound/opl3.h>
32 #include <sound/initval.h>
33
34 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
35 MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
36 MODULE_LICENSE("GPL");
37 MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
38
39 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
40 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
41 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
42 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x240,0x260 */
43 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,10 */
44 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3 */
45
46 module_param_array(index, int, NULL, 0444);
47 MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
48 module_param_array(id, charp, NULL, 0444);
49 MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
50 module_param_array(enable, bool, NULL, 0444);
51 MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
52 module_param_array(port, long, NULL, 0444);
53 MODULE_PARM_DESC(port, "Port # for SB8 driver.");
54 module_param_array(irq, int, NULL, 0444);
55 MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
56 module_param_array(dma8, int, NULL, 0444);
57 MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
58
59 static struct platform_device *devices[SNDRV_CARDS];
60
61 struct snd_sb8 {
62         struct resource *fm_res;        /* used to block FM i/o region for legacy cards */
63         struct snd_sb *chip;
64 };
65
66 static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
67 {
68         struct snd_sb *chip = dev_id;
69
70         if (chip->open & SB_OPEN_PCM) {
71                 return snd_sb8dsp_interrupt(chip);
72         } else {
73                 return snd_sb8dsp_midi_interrupt(chip);
74         }
75 }
76
77 static void snd_sb8_free(struct snd_card *card)
78 {
79         struct snd_sb8 *acard = (struct snd_sb8 *)card->private_data;
80
81         if (acard == NULL)
82                 return;
83         release_and_free_resource(acard->fm_res);
84 }
85
86 static int __init snd_sb8_probe(struct platform_device *pdev)
87 {
88         int dev = pdev->id;
89         struct snd_sb *chip;
90         struct snd_card *card;
91         struct snd_sb8 *acard;
92         struct snd_opl3 *opl3;
93         int err;
94
95         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
96                             sizeof(struct snd_sb8));
97         if (card == NULL)
98                 return -ENOMEM;
99         acard = card->private_data;
100         card->private_free = snd_sb8_free;
101
102         /* block the 0x388 port to avoid PnP conflicts */
103         acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
104
105         if (port[dev] != SNDRV_AUTO_PORT) {
106                 if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
107                                             snd_sb8_interrupt,
108                                             dma8[dev],
109                                             -1,
110                                             SB_HW_AUTO,
111                                             &chip)) < 0)
112                         goto _err;
113         } else {
114                 /* auto-probe legacy ports */
115                 static unsigned long possible_ports[] = {
116                         0x220, 0x240, 0x260,
117                 };
118                 int i;
119                 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
120                         err = snd_sbdsp_create(card, possible_ports[i],
121                                                irq[dev],
122                                                snd_sb8_interrupt,
123                                                dma8[dev],
124                                                -1,
125                                                SB_HW_AUTO,
126                                                &chip);
127                         if (err >= 0) {
128                                 port[dev] = possible_ports[i];
129                                 break;
130                         }
131                 }
132                 if (i >= ARRAY_SIZE(possible_ports))
133                         goto _err;
134         }
135         acard->chip = chip;
136                         
137         if (chip->hardware >= SB_HW_16) {
138                 if (chip->hardware == SB_HW_ALS100)
139                         snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
140                                     port[dev]);
141                 else
142                         snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
143                                    port[dev]);
144                 err = -ENODEV;
145                 goto _err;
146         }
147
148         if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0)
149                 goto _err;
150
151         if ((err = snd_sbmixer_new(chip)) < 0)
152                 goto _err;
153
154         if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
155                 if ((err = snd_opl3_create(card, chip->port + 8, 0,
156                                            OPL3_HW_AUTO, 1,
157                                            &opl3)) < 0) {
158                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8);
159                 }
160         } else {
161                 if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
162                                            OPL3_HW_AUTO, 1,
163                                            &opl3)) < 0) {
164                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n",
165                                    chip->port, chip->port + 2);
166                 }
167         }
168         if (err >= 0) {
169                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
170                         goto _err;
171         }
172
173         if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0)
174                 goto _err;
175
176         strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
177         strcpy(card->shortname, chip->name);
178         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
179                 chip->name,
180                 chip->port,
181                 irq[dev], dma8[dev]);
182
183         snd_card_set_dev(card, &pdev->dev);
184
185         if ((err = snd_card_register(card)) < 0)
186                 goto _err;
187
188         platform_set_drvdata(pdev, card);
189         return 0;
190
191  _err:
192         snd_card_free(card);
193         return err;
194 }
195
196 static int snd_sb8_remove(struct platform_device *pdev)
197 {
198         snd_card_free(platform_get_drvdata(pdev));
199         platform_set_drvdata(pdev, NULL);
200         return 0;
201 }
202
203 #ifdef CONFIG_PM
204 static int snd_sb8_suspend(struct platform_device *dev, pm_message_t state)
205 {
206         struct snd_card *card = platform_get_drvdata(dev);
207         struct snd_sb8 *acard = card->private_data;
208         struct snd_sb *chip = acard->chip;
209
210         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
211         snd_pcm_suspend_all(chip->pcm);
212         snd_sbmixer_suspend(chip);
213         return 0;
214 }
215
216 static int snd_sb8_resume(struct platform_device *dev)
217 {
218         struct snd_card *card = platform_get_drvdata(dev);
219         struct snd_sb8 *acard = card->private_data;
220         struct snd_sb *chip = acard->chip;
221
222         snd_sbdsp_reset(chip);
223         snd_sbmixer_resume(chip);
224         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
225         return 0;
226 }
227 #endif
228
229 #define SND_SB8_DRIVER  "snd_sb8"
230
231 static struct platform_driver snd_sb8_driver = {
232         .probe          = snd_sb8_probe,
233         .remove         = snd_sb8_remove,
234 #ifdef CONFIG_PM
235         .suspend        = snd_sb8_suspend,
236         .resume         = snd_sb8_resume,
237 #endif
238         .driver         = {
239                 .name   = SND_SB8_DRIVER
240         },
241 };
242
243 static void __init_or_module snd_sb8_unregister_all(void)
244 {
245         int i;
246
247         for (i = 0; i < ARRAY_SIZE(devices); ++i)
248                 platform_device_unregister(devices[i]);
249         platform_driver_unregister(&snd_sb8_driver);
250 }
251
252 static int __init alsa_card_sb8_init(void)
253 {
254         int i, cards, err;
255
256         err = platform_driver_register(&snd_sb8_driver);
257         if (err < 0)
258                 return err;
259
260         cards = 0;
261         for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
262                 struct platform_device *device;
263                 device = platform_device_register_simple(SND_SB8_DRIVER,
264                                                          i, NULL, 0);
265                 if (IS_ERR(device)) {
266                         err = PTR_ERR(device);
267                         goto errout;
268                 }
269                 devices[i] = device;
270                 cards++;
271         }
272         if (!cards) {
273 #ifdef MODULE
274                 snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
275 #endif
276                 err = -ENODEV;
277                 goto errout;
278         }
279         return 0;
280
281  errout:
282         snd_sb8_unregister_all();
283         return err;
284 }
285
286 static void __exit alsa_card_sb8_exit(void)
287 {
288         snd_sb8_unregister_all();
289 }
290
291 module_init(alsa_card_sb8_init)
292 module_exit(alsa_card_sb8_exit)