Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 
  2 /*
  3     card-ad1816a.c - driver for ADI SoundPort AD1816A based soundcards.
  4     Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it>
  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 #include <linux/init.h>
 22 #include <linux/time.h>
 23 #include <linux/wait.h>
 24 #include <linux/pnp.h>
 25 #include <linux/moduleparam.h>
 26 #include <sound/core.h>
 27 #include <sound/initval.h>
 28 #include <sound/ad1816a.h>
 29 #include <sound/mpu401.h>
 30 #include <sound/opl3.h>
 31 
 32 #define PFX "ad1816a: "
 33 
 34 MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
 35 MODULE_DESCRIPTION("AD1816A, AD1815");
 36 MODULE_LICENSE("GPL");
 37 MODULE_SUPPORTED_DEVICE("{{Highscreen,Sound-Boostar 16 3D},"
 38                 "{Analog Devices,AD1815},"
 39                 "{Analog Devices,AD1816A},"
 40                 "{TerraTec,Base 64},"
 41                 "{TerraTec,AudioSystem EWS64S},"
 42                 "{Aztech/Newcom SC-16 3D},"
 43                 "{Shark Predator ISA}}");
 44 
 45 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 1-MAX */
 46 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 47 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP;   /* Enable this card */
 48 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
 49 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
 50 static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;  /* PnP setup */
 51 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* Pnp setup */
 52 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;    /* Pnp setup */
 53 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* PnP setup */
 54 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* PnP setup */
 55 static int clockfreq[SNDRV_CARDS];
 56 
 57 module_param_array(index, int, NULL, 0444);
 58 MODULE_PARM_DESC(index, "Index value for ad1816a based soundcard.");
 59 module_param_array(id, charp, NULL, 0444);
 60 MODULE_PARM_DESC(id, "ID string for ad1816a based soundcard.");
 61 module_param_array(enable, bool, NULL, 0444);
 62 MODULE_PARM_DESC(enable, "Enable ad1816a based soundcard.");
 63 module_param_array(clockfreq, int, NULL, 0444);
 64 MODULE_PARM_DESC(clockfreq, "Clock frequency for ad1816a driver (default = 0).");
 65 
 66 struct snd_card_ad1816a {
 67         struct pnp_dev *dev;
 68         struct pnp_dev *devmpu;
 69 };
 70 
 71 static struct pnp_card_device_id snd_ad1816a_pnpids[] = {
 72         /* Analog Devices AD1815 */
 73         { .id = "ADS7150", .devs = { { .id = "ADS7150" }, { .id = "ADS7151" } } },
 74         /* Analog Device AD1816? */
 75         { .id = "ADS7180", .devs = { { .id = "ADS7180" }, { .id = "ADS7181" } } },
 76         /* Analog Devices AD1816A - added by Kenneth Platz <kxp@atl.hp.com> */
 77         { .id = "ADS7181", .devs = { { .id = "ADS7180" }, { .id = "ADS7181" } } },
 78         /* Analog Devices AD1816A - Aztech/Newcom SC-16 3D */
 79         { .id = "AZT1022", .devs = { { .id = "AZT1018" }, { .id = "AZT2002" } } },
 80         /* Highscreen Sound-Boostar 16 3D - added by Stefan Behnel */
 81         { .id = "LWC1061", .devs = { { .id = "ADS7180" }, { .id = "ADS7181" } } },
 82         /* Highscreen Sound-Boostar 16 3D */
 83         { .id = "MDK1605", .devs = { { .id = "ADS7180" }, { .id = "ADS7181" } } },
 84         /* Shark Predator ISA - added by Ken Arromdee */
 85         { .id = "SMM7180", .devs = { { .id = "ADS7180" }, { .id = "ADS7181" } } },
 86         /* Analog Devices AD1816A - Terratec AudioSystem EWS64S */
 87         { .id = "TER1112", .devs = { { .id = "ADS7180" }, { .id = "ADS7181" } } },
 88         /* Analog Devices AD1816A - Terratec Base 64 */
 89         { .id = "TER1411", .devs = { { .id = "ADS7180" }, { .id = "ADS7181" } } },
 90         /* end */
 91         { .id = "" }
 92 };
 93 
 94 MODULE_DEVICE_TABLE(pnp_card, snd_ad1816a_pnpids);
 95 
 96 
 97 #define DRIVER_NAME     "snd-card-ad1816a"
 98 
 99 
100 static int __devinit snd_card_ad1816a_pnp(int dev, struct snd_card_ad1816a *acard,
101                                           struct pnp_card_link *card,
102                                           const struct pnp_card_device_id *id)
103 {
104         struct pnp_dev *pdev;
105         int err;
106 
107         acard->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
108         if (acard->dev == NULL)
109                 return -EBUSY;
110 
111         acard->devmpu = pnp_request_card_device(card, id->devs[1].id, NULL);
112         if (acard->devmpu == NULL) {
113                 mpu_port[dev] = -1;
114                 snd_printk(KERN_WARNING PFX "MPU401 device busy, skipping.\n");
115         }
116 
117         pdev = acard->dev;
118 
119         err = pnp_activate_dev(pdev);
120         if (err < 0) {
121                 printk(KERN_ERR PFX "AUDIO PnP configure failure\n");
122                 return -EBUSY;
123         }
124 
125         port[dev] = pnp_port_start(pdev, 2);
126         fm_port[dev] = pnp_port_start(pdev, 1);
127         dma1[dev] = pnp_dma(pdev, 0);
128         dma2[dev] = pnp_dma(pdev, 1);
129         irq[dev] = pnp_irq(pdev, 0);
130 
131         if (acard->devmpu == NULL)
132                 return 0;
133 
134         pdev = acard->devmpu;
135 
136         err = pnp_activate_dev(pdev);
137         if (err < 0) {
138                 printk(KERN_ERR PFX "MPU401 PnP configure failure\n");
139                 mpu_port[dev] = -1;
140                 acard->devmpu = NULL;
141         } else {
142                 mpu_port[dev] = pnp_port_start(pdev, 0);
143                 mpu_irq[dev] = pnp_irq(pdev, 0);
144         }
145 
146         return 0;
147 }
148 
149 static int __devinit snd_card_ad1816a_probe(int dev, struct pnp_card_link *pcard,
150                                             const struct pnp_card_device_id *pid)
151 {
152         int error;
153         struct snd_card *card;
154         struct snd_card_ad1816a *acard;
155         struct snd_ad1816a *chip;
156         struct snd_opl3 *opl3;
157 
158         if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE,
159                                  sizeof(struct snd_card_ad1816a))) == NULL)
160                 return -ENOMEM;
161         acard = (struct snd_card_ad1816a *)card->private_data;
162 
163         if ((error = snd_card_ad1816a_pnp(dev, acard, pcard, pid))) {
164                 snd_card_free(card);
165                 return error;
166         }
167         snd_card_set_dev(card, &pcard->card->dev);
168 
169         if ((error = snd_ad1816a_create(card, port[dev],
170                                         irq[dev],
171                                         dma1[dev],
172                                         dma2[dev],
173                                         &chip)) < 0) {
174                 snd_card_free(card);
175                 return error;
176         }
177         if (clockfreq[dev] >= 5000 && clockfreq[dev] <= 100000)
178                 chip->clock_freq = clockfreq[dev];
179 
180         strcpy(card->driver, "AD1816A");
181         strcpy(card->shortname, "ADI SoundPort AD1816A");
182         sprintf(card->longname, "%s, SS at 0x%lx, irq %d, dma %d&%d",
183                 card->shortname, chip->port, irq[dev], dma1[dev], dma2[dev]);
184 
185         if ((error = snd_ad1816a_pcm(chip, 0, NULL)) < 0) {
186                 snd_card_free(card);
187                 return error;
188         }
189 
190         if ((error = snd_ad1816a_mixer(chip)) < 0) {
191                 snd_card_free(card);
192                 return error;
193         }
194 
195         if (mpu_port[dev] > 0) {
196                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
197                                         mpu_port[dev], 0, mpu_irq[dev], IRQF_DISABLED,
198                                         NULL) < 0)
199                         printk(KERN_ERR PFX "no MPU-401 device at 0x%lx.\n", mpu_port[dev]);
200         }
201 
202         if (fm_port[dev] > 0) {
203                 if (snd_opl3_create(card,
204                                     fm_port[dev], fm_port[dev] + 2,
205                                     OPL3_HW_AUTO, 0, &opl3) < 0) {
206                         printk(KERN_ERR PFX "no OPL device at 0x%lx-0x%lx.\n", fm_port[dev], fm_port[dev] + 2);
207                 } else {
208                         if ((error = snd_opl3_timer_new(opl3, 1, 2)) < 0) {
209                                 snd_card_free(card);
210                                 return error;
211                         }
212                         if ((error = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
213                                 snd_card_free(card);
214                                 return error;
215                         }
216                 }
217         }
218 
219         if ((error = snd_card_register(card)) < 0) {
220                 snd_card_free(card);
221                 return error;
222         }
223         pnp_set_card_drvdata(pcard, card);
224         return 0;
225 }
226 
227 static unsigned int __devinitdata ad1816a_devices;
228 
229 static int __devinit snd_ad1816a_pnp_detect(struct pnp_card_link *card,
230                                             const struct pnp_card_device_id *id)
231 {
232         static int dev;
233         int res;
234 
235         for ( ; dev < SNDRV_CARDS; dev++) {
236                 if (!enable[dev])
237                         continue;
238                 res = snd_card_ad1816a_probe(dev, card, id);
239                 if (res < 0)
240                         return res;
241                 dev++;
242                 ad1816a_devices++;
243                 return 0;
244         }
245         return -ENODEV;
246 }
247 
248 static void __devexit snd_ad1816a_pnp_remove(struct pnp_card_link * pcard)
249 {
250         snd_card_free(pnp_get_card_drvdata(pcard));
251         pnp_set_card_drvdata(pcard, NULL);
252 }
253 
254 static struct pnp_card_driver ad1816a_pnpc_driver = {
255         .flags          = PNP_DRIVER_RES_DISABLE,
256         .name           = "ad1816a",
257         .id_table       = snd_ad1816a_pnpids,
258         .probe          = snd_ad1816a_pnp_detect,
259         .remove         = __devexit_p(snd_ad1816a_pnp_remove),
260         /* FIXME: suspend/resume */
261 };
262 
263 static int __init alsa_card_ad1816a_init(void)
264 {
265         int err;
266 
267         err = pnp_register_card_driver(&ad1816a_pnpc_driver);
268         if (err)
269                 return err;
270 
271         if (!ad1816a_devices) {
272                 pnp_unregister_card_driver(&ad1816a_pnpc_driver);
273 #ifdef MODULE
274                 printk(KERN_ERR "no AD1816A based soundcards found.\n");
275 #endif  /* MODULE */
276                 return -ENODEV;
277         }
278         return 0;
279 }
280 
281 static void __exit alsa_card_ad1816a_exit(void)
282 {
283         pnp_unregister_card_driver(&ad1816a_pnpc_driver);
284 }
285 
286 module_init(alsa_card_ad1816a_init)
287 module_exit(alsa_card_ad1816a_exit)
288 
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