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Linux/sound/isa/sb/sb8.c

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  1 /*
  2  *  Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
  3  *  Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/init.h>
 23 #include <linux/err.h>
 24 #include <linux/isa.h>
 25 #include <linux/ioport.h>
 26 #include <linux/module.h>
 27 #include <sound/core.h>
 28 #include <sound/sb.h>
 29 #include <sound/opl3.h>
 30 #include <sound/initval.h>
 31 
 32 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 33 MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
 34 MODULE_LICENSE("GPL");
 35 MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
 36 
 37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 39 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
 40 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x240,0x260 */
 41 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,10 */
 42 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3 */
 43 
 44 module_param_array(index, int, NULL, 0444);
 45 MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
 46 module_param_array(id, charp, NULL, 0444);
 47 MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
 48 module_param_array(enable, bool, NULL, 0444);
 49 MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
 50 module_param_array(port, long, NULL, 0444);
 51 MODULE_PARM_DESC(port, "Port # for SB8 driver.");
 52 module_param_array(irq, int, NULL, 0444);
 53 MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
 54 module_param_array(dma8, int, NULL, 0444);
 55 MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
 56 
 57 struct snd_sb8 {
 58         struct resource *fm_res;        /* used to block FM i/o region for legacy cards */
 59         struct snd_sb *chip;
 60 };
 61 
 62 static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id)
 63 {
 64         struct snd_sb *chip = dev_id;
 65 
 66         if (chip->open & SB_OPEN_PCM) {
 67                 return snd_sb8dsp_interrupt(chip);
 68         } else {
 69                 return snd_sb8dsp_midi_interrupt(chip);
 70         }
 71 }
 72 
 73 static void snd_sb8_free(struct snd_card *card)
 74 {
 75         struct snd_sb8 *acard = card->private_data;
 76 
 77         if (acard == NULL)
 78                 return;
 79         release_and_free_resource(acard->fm_res);
 80 }
 81 
 82 static int __devinit snd_sb8_match(struct device *pdev, unsigned int dev)
 83 {
 84         if (!enable[dev])
 85                 return 0;
 86         if (irq[dev] == SNDRV_AUTO_IRQ) {
 87                 dev_err(pdev, "please specify irq\n");
 88                 return 0;
 89         }
 90         if (dma8[dev] == SNDRV_AUTO_DMA) {
 91                 dev_err(pdev, "please specify dma8\n");
 92                 return 0;
 93         }
 94         return 1;
 95 }
 96 
 97 static int __devinit snd_sb8_probe(struct device *pdev, unsigned int dev)
 98 {
 99         struct snd_sb *chip;
100         struct snd_card *card;
101         struct snd_sb8 *acard;
102         struct snd_opl3 *opl3;
103         int err;
104 
105         err = snd_card_create(index[dev], id[dev], THIS_MODULE,
106                               sizeof(struct snd_sb8), &card);
107         if (err < 0)
108                 return err;
109         acard = card->private_data;
110         card->private_free = snd_sb8_free;
111 
112         /* block the 0x388 port to avoid PnP conflicts */
113         acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
114 
115         if (port[dev] != SNDRV_AUTO_PORT) {
116                 if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
117                                             snd_sb8_interrupt,
118                                             dma8[dev],
119                                             -1,
120                                             SB_HW_AUTO,
121                                             &chip)) < 0)
122                         goto _err;
123         } else {
124                 /* auto-probe legacy ports */
125                 static unsigned long possible_ports[] = {
126                         0x220, 0x240, 0x260,
127                 };
128                 int i;
129                 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
130                         err = snd_sbdsp_create(card, possible_ports[i],
131                                                irq[dev],
132                                                snd_sb8_interrupt,
133                                                dma8[dev],
134                                                -1,
135                                                SB_HW_AUTO,
136                                                &chip);
137                         if (err >= 0) {
138                                 port[dev] = possible_ports[i];
139                                 break;
140                         }
141                 }
142                 if (i >= ARRAY_SIZE(possible_ports)) {
143                         err = -EINVAL;
144                         goto _err;
145                 }
146         }
147         acard->chip = chip;
148                         
149         if (chip->hardware >= SB_HW_16) {
150                 if (chip->hardware == SB_HW_ALS100)
151                         snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
152                                     port[dev]);
153                 else
154                         snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
155                                    port[dev]);
156                 err = -ENODEV;
157                 goto _err;
158         }
159 
160         if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0)
161                 goto _err;
162 
163         if ((err = snd_sbmixer_new(chip)) < 0)
164                 goto _err;
165 
166         if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
167                 if ((err = snd_opl3_create(card, chip->port + 8, 0,
168                                            OPL3_HW_AUTO, 1,
169                                            &opl3)) < 0) {
170                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8);
171                 }
172         } else {
173                 if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
174                                            OPL3_HW_AUTO, 1,
175                                            &opl3)) < 0) {
176                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n",
177                                    chip->port, chip->port + 2);
178                 }
179         }
180         if (err >= 0) {
181                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
182                         goto _err;
183         }
184 
185         if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0)
186                 goto _err;
187 
188         strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
189         strcpy(card->shortname, chip->name);
190         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
191                 chip->name,
192                 chip->port,
193                 irq[dev], dma8[dev]);
194 
195         snd_card_set_dev(card, pdev);
196 
197         if ((err = snd_card_register(card)) < 0)
198                 goto _err;
199 
200         dev_set_drvdata(pdev, card);
201         return 0;
202 
203  _err:
204         snd_card_free(card);
205         return err;
206 }
207 
208 static int __devexit snd_sb8_remove(struct device *pdev, unsigned int dev)
209 {
210         snd_card_free(dev_get_drvdata(pdev));
211         dev_set_drvdata(pdev, NULL);
212         return 0;
213 }
214 
215 #ifdef CONFIG_PM
216 static int snd_sb8_suspend(struct device *dev, unsigned int n,
217                            pm_message_t state)
218 {
219         struct snd_card *card = dev_get_drvdata(dev);
220         struct snd_sb8 *acard = card->private_data;
221         struct snd_sb *chip = acard->chip;
222 
223         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
224         snd_pcm_suspend_all(chip->pcm);
225         snd_sbmixer_suspend(chip);
226         return 0;
227 }
228 
229 static int snd_sb8_resume(struct device *dev, unsigned int n)
230 {
231         struct snd_card *card = dev_get_drvdata(dev);
232         struct snd_sb8 *acard = card->private_data;
233         struct snd_sb *chip = acard->chip;
234 
235         snd_sbdsp_reset(chip);
236         snd_sbmixer_resume(chip);
237         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
238         return 0;
239 }
240 #endif
241 
242 #define DEV_NAME "sb8"
243 
244 static struct isa_driver snd_sb8_driver = {
245         .match          = snd_sb8_match,
246         .probe          = snd_sb8_probe,
247         .remove         = __devexit_p(snd_sb8_remove),
248 #ifdef CONFIG_PM
249         .suspend        = snd_sb8_suspend,
250         .resume         = snd_sb8_resume,
251 #endif
252         .driver         = {
253                 .name   = DEV_NAME 
254         },
255 };
256 
257 static int __init alsa_card_sb8_init(void)
258 {
259         return isa_register_driver(&snd_sb8_driver, SNDRV_CARDS);
260 }
261 
262 static void __exit alsa_card_sb8_exit(void)
263 {
264         isa_unregister_driver(&snd_sb8_driver);
265 }
266 
267 module_init(alsa_card_sb8_init)
268 module_exit(alsa_card_sb8_exit)
269 

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