sb8.c revision 7d12e780e003f93433d49ce78cfedf4b4c52adc5 
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
34MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
35MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
36MODULE_LICENSE("GPL");
37MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
38
39static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
40static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
41static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
42static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260 */
43static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
44static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 1,3 */
45
46module_param_array(index, int, NULL, 0444);
47MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
48module_param_array(id, charp, NULL, 0444);
49MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
50module_param_array(enable, bool, NULL, 0444);
51MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
52module_param_array(port, long, NULL, 0444);
53MODULE_PARM_DESC(port, "Port # for SB8 driver.");
54module_param_array(irq, int, NULL, 0444);
55MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
56module_param_array(dma8, int, NULL, 0444);
57MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
58
59static struct platform_device *devices[SNDRV_CARDS];
60
61struct snd_sb8 {
62	struct resource *fm_res;	/* used to block FM i/o region for legacy cards */
63	struct snd_sb *chip;
64};
65
66static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id)
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
77static 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
86static 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
196static 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
204static 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
216static 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
231static 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
243static 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
252static 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; i++) {
262		struct platform_device *device;
263		if (! enable[i])
264			continue;
265		device = platform_device_register_simple(SND_SB8_DRIVER,
266							 i, NULL, 0);
267		if (IS_ERR(device))
268			continue;
269		if (!platform_get_drvdata(device)) {
270			platform_device_unregister(device);
271			continue;
272		}
273		devices[i] = device;
274		cards++;
275	}
276	if (!cards) {
277#ifdef MODULE
278		snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
279#endif
280		snd_sb8_unregister_all();
281		return -ENODEV;
282	}
283	return 0;
284}
285
286static void __exit alsa_card_sb8_exit(void)
287{
288	snd_sb8_unregister_all();
289}
290
291module_init(alsa_card_sb8_init)
292module_exit(alsa_card_sb8_exit)
293