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Linux/sound/isa/sb/sb8.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  *  Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
  4  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  5  */
  6 
  7 #include <linux/init.h>
  8 #include <linux/err.h>
  9 #include <linux/isa.h>
 10 #include <linux/ioport.h>
 11 #include <linux/module.h>
 12 #include <sound/core.h>
 13 #include <sound/sb.h>
 14 #include <sound/opl3.h>
 15 #include <sound/initval.h>
 16 
 17 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 18 MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
 19 MODULE_LICENSE("GPL");
 20 MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
 21 
 22 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 23 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 24 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
 25 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x240,0x260 */
 26 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,10 */
 27 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3 */
 28 
 29 module_param_array(index, int, NULL, 0444);
 30 MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
 31 module_param_array(id, charp, NULL, 0444);
 32 MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
 33 module_param_array(enable, bool, NULL, 0444);
 34 MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
 35 module_param_hw_array(port, long, ioport, NULL, 0444);
 36 MODULE_PARM_DESC(port, "Port # for SB8 driver.");
 37 module_param_hw_array(irq, int, irq, NULL, 0444);
 38 MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
 39 module_param_hw_array(dma8, int, dma, NULL, 0444);
 40 MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
 41 
 42 struct snd_sb8 {
 43         struct resource *fm_res;        /* used to block FM i/o region for legacy cards */
 44         struct snd_sb *chip;
 45 };
 46 
 47 static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id)
 48 {
 49         struct snd_sb *chip = dev_id;
 50 
 51         if (chip->open & SB_OPEN_PCM) {
 52                 return snd_sb8dsp_interrupt(chip);
 53         } else {
 54                 return snd_sb8dsp_midi_interrupt(chip);
 55         }
 56 }
 57 
 58 static void snd_sb8_free(struct snd_card *card)
 59 {
 60         struct snd_sb8 *acard = card->private_data;
 61 
 62         if (acard == NULL)
 63                 return;
 64         release_and_free_resource(acard->fm_res);
 65 }
 66 
 67 static int snd_sb8_match(struct device *pdev, unsigned int dev)
 68 {
 69         if (!enable[dev])
 70                 return 0;
 71         if (irq[dev] == SNDRV_AUTO_IRQ) {
 72                 dev_err(pdev, "please specify irq\n");
 73                 return 0;
 74         }
 75         if (dma8[dev] == SNDRV_AUTO_DMA) {
 76                 dev_err(pdev, "please specify dma8\n");
 77                 return 0;
 78         }
 79         return 1;
 80 }
 81 
 82 static int snd_sb8_probe(struct device *pdev, unsigned int dev)
 83 {
 84         struct snd_sb *chip;
 85         struct snd_card *card;
 86         struct snd_sb8 *acard;
 87         struct snd_opl3 *opl3;
 88         int err;
 89 
 90         err = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
 91                            sizeof(struct snd_sb8), &card);
 92         if (err < 0)
 93                 return err;
 94         acard = card->private_data;
 95         card->private_free = snd_sb8_free;
 96 
 97         /* block the 0x388 port to avoid PnP conflicts */
 98         acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
 99         if (!acard->fm_res) {
100                 err = -EBUSY;
101                 goto _err;
102         }
103 
104         if (port[dev] != SNDRV_AUTO_PORT) {
105                 if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
106                                             snd_sb8_interrupt,
107                                             dma8[dev],
108                                             -1,
109                                             SB_HW_AUTO,
110                                             &chip)) < 0)
111                         goto _err;
112         } else {
113                 /* auto-probe legacy ports */
114                 static unsigned long possible_ports[] = {
115                         0x220, 0x240, 0x260,
116                 };
117                 int i;
118                 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
119                         err = snd_sbdsp_create(card, possible_ports[i],
120                                                irq[dev],
121                                                snd_sb8_interrupt,
122                                                dma8[dev],
123                                                -1,
124                                                SB_HW_AUTO,
125                                                &chip);
126                         if (err >= 0) {
127                                 port[dev] = possible_ports[i];
128                                 break;
129                         }
130                 }
131                 if (i >= ARRAY_SIZE(possible_ports)) {
132                         err = -EINVAL;
133                         goto _err;
134                 }
135         }
136         acard->chip = chip;
137                         
138         if (chip->hardware >= SB_HW_16) {
139                 if (chip->hardware == SB_HW_ALS100)
140                         snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
141                                     port[dev]);
142                 else
143                         snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
144                                    port[dev]);
145                 err = -ENODEV;
146                 goto _err;
147         }
148 
149         if ((err = snd_sb8dsp_pcm(chip, 0)) < 0)
150                 goto _err;
151 
152         if ((err = snd_sbmixer_new(chip)) < 0)
153                 goto _err;
154 
155         if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
156                 if ((err = snd_opl3_create(card, chip->port + 8, 0,
157                                            OPL3_HW_AUTO, 1,
158                                            &opl3)) < 0) {
159                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8);
160                 }
161         } else {
162                 if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
163                                            OPL3_HW_AUTO, 1,
164                                            &opl3)) < 0) {
165                         snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n",
166                                    chip->port, chip->port + 2);
167                 }
168         }
169         if (err >= 0) {
170                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
171                         goto _err;
172         }
173 
174         if ((err = snd_sb8dsp_midi(chip, 0)) < 0)
175                 goto _err;
176 
177         strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
178         strcpy(card->shortname, chip->name);
179         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
180                 chip->name,
181                 chip->port,
182                 irq[dev], dma8[dev]);
183 
184         if ((err = snd_card_register(card)) < 0)
185                 goto _err;
186 
187         dev_set_drvdata(pdev, card);
188         return 0;
189 
190  _err:
191         snd_card_free(card);
192         return err;
193 }
194 
195 static int snd_sb8_remove(struct device *pdev, unsigned int dev)
196 {
197         snd_card_free(dev_get_drvdata(pdev));
198         return 0;
199 }
200 
201 #ifdef CONFIG_PM
202 static int snd_sb8_suspend(struct device *dev, unsigned int n,
203                            pm_message_t state)
204 {
205         struct snd_card *card = dev_get_drvdata(dev);
206         struct snd_sb8 *acard = card->private_data;
207         struct snd_sb *chip = acard->chip;
208 
209         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
210         snd_sbmixer_suspend(chip);
211         return 0;
212 }
213 
214 static int snd_sb8_resume(struct device *dev, unsigned int n)
215 {
216         struct snd_card *card = dev_get_drvdata(dev);
217         struct snd_sb8 *acard = card->private_data;
218         struct snd_sb *chip = acard->chip;
219 
220         snd_sbdsp_reset(chip);
221         snd_sbmixer_resume(chip);
222         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
223         return 0;
224 }
225 #endif
226 
227 #define DEV_NAME "sb8"
228 
229 static struct isa_driver snd_sb8_driver = {
230         .match          = snd_sb8_match,
231         .probe          = snd_sb8_probe,
232         .remove         = snd_sb8_remove,
233 #ifdef CONFIG_PM
234         .suspend        = snd_sb8_suspend,
235         .resume         = snd_sb8_resume,
236 #endif
237         .driver         = {
238                 .name   = DEV_NAME 
239         },
240 };
241 
242 module_isa_driver(snd_sb8_driver, SNDRV_CARDS);
243 

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