[GFS2] fixed a NULL pointer assignment BUG
[linux-2.6/mini2440.git] / sound / isa / als100.c
blobf2bcfb2cf5f576bae36135c33524ba2d1d3fd40e
2 /*
3 card-als100.c - driver for Avance Logic ALS100 based soundcards.
4 Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>
6 Thanks to Pierfrancesco 'qM2' Passerini.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <sound/driver.h>
24 #include <linux/init.h>
25 #include <linux/wait.h>
26 #include <linux/time.h>
27 #include <linux/pnp.h>
28 #include <linux/moduleparam.h>
29 #include <sound/core.h>
30 #include <sound/initval.h>
31 #include <sound/mpu401.h>
32 #include <sound/opl3.h>
33 #include <sound/sb.h>
35 #define PFX "als100: "
37 MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
38 MODULE_DESCRIPTION("Avance Logic ALS1X0");
39 MODULE_LICENSE("GPL");
40 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS100 - PRO16PNP},"
41 "{Avance Logic,ALS110},"
42 "{Avance Logic,ALS120},"
43 "{Avance Logic,ALS200},"
44 "{3D Melody,MF1000},"
45 "{Digimate,3D Sound},"
46 "{Avance Logic,ALS120},"
47 "{RTL,RTL3000}}");
49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
51 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP; /* Enable this card */
52 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
53 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
54 static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
55 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* PnP setup */
56 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* PnP setup */
57 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
58 static int dma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* PnP setup */
60 module_param_array(index, int, NULL, 0444);
61 MODULE_PARM_DESC(index, "Index value for als100 based soundcard.");
62 module_param_array(id, charp, NULL, 0444);
63 MODULE_PARM_DESC(id, "ID string for als100 based soundcard.");
64 module_param_array(enable, bool, NULL, 0444);
65 MODULE_PARM_DESC(enable, "Enable als100 based soundcard.");
66 module_param_array(port, long, NULL, 0444);
67 MODULE_PARM_DESC(port, "Port # for als100 driver.");
68 module_param_array(mpu_port, long, NULL, 0444);
69 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for als100 driver.");
70 module_param_array(fm_port, long, NULL, 0444);
71 MODULE_PARM_DESC(fm_port, "FM port # for als100 driver.");
72 module_param_array(irq, int, NULL, 0444);
73 MODULE_PARM_DESC(irq, "IRQ # for als100 driver.");
74 module_param_array(mpu_irq, int, NULL, 0444);
75 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for als100 driver.");
76 module_param_array(dma8, int, NULL, 0444);
77 MODULE_PARM_DESC(dma8, "8-bit DMA # for als100 driver.");
78 module_param_array(dma16, int, NULL, 0444);
79 MODULE_PARM_DESC(dma16, "16-bit DMA # for als100 driver.");
81 struct snd_card_als100 {
82 int dev_no;
83 struct pnp_dev *dev;
84 struct pnp_dev *devmpu;
85 struct pnp_dev *devopl;
86 struct snd_sb *chip;
89 static struct pnp_card_device_id snd_als100_pnpids[] = {
90 /* ALS100 - PRO16PNP */
91 { .id = "ALS0001", .devs = { { "@@@0001" }, { "@X@0001" }, { "@H@0001" } } },
92 /* ALS110 - MF1000 - Digimate 3D Sound */
93 { .id = "ALS0110", .devs = { { "@@@1001" }, { "@X@1001" }, { "@H@1001" } } },
94 /* ALS120 */
95 { .id = "ALS0120", .devs = { { "@@@2001" }, { "@X@2001" }, { "@H@2001" } } },
96 /* ALS200 */
97 { .id = "ALS0200", .devs = { { "@@@0020" }, { "@X@0020" }, { "@H@0001" } } },
98 /* ALS200 OEM */
99 { .id = "ALS0200", .devs = { { "@@@0020" }, { "@X@0020" }, { "@H@0020" } } },
100 /* RTL3000 */
101 { .id = "RTL3000", .devs = { { "@@@2001" }, { "@X@2001" }, { "@H@2001" } } },
102 { .id = "", } /* end */
105 MODULE_DEVICE_TABLE(pnp_card, snd_als100_pnpids);
107 #define DRIVER_NAME "snd-card-als100"
109 static int __devinit snd_card_als100_pnp(int dev, struct snd_card_als100 *acard,
110 struct pnp_card_link *card,
111 const struct pnp_card_device_id *id)
113 struct pnp_dev *pdev;
114 struct pnp_resource_table *cfg = kmalloc(sizeof(*cfg), GFP_KERNEL);
115 int err;
117 if (!cfg)
118 return -ENOMEM;
119 acard->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
120 if (acard->dev == NULL) {
121 kfree(cfg);
122 return -ENODEV;
124 acard->devmpu = pnp_request_card_device(card, id->devs[1].id, acard->dev);
125 acard->devopl = pnp_request_card_device(card, id->devs[2].id, acard->dev);
127 pdev = acard->dev;
129 pnp_init_resource_table(cfg);
131 /* override resources */
132 if (port[dev] != SNDRV_AUTO_PORT)
133 pnp_resource_change(&cfg->port_resource[0], port[dev], 16);
134 if (dma8[dev] != SNDRV_AUTO_DMA)
135 pnp_resource_change(&cfg->dma_resource[0], dma8[dev], 1);
136 if (dma16[dev] != SNDRV_AUTO_DMA)
137 pnp_resource_change(&cfg->dma_resource[1], dma16[dev], 1);
138 if (irq[dev] != SNDRV_AUTO_IRQ)
139 pnp_resource_change(&cfg->irq_resource[0], irq[dev], 1);
140 if (pnp_manual_config_dev(pdev, cfg, 0) < 0)
141 snd_printk(KERN_ERR PFX "AUDIO the requested resources are invalid, using auto config\n");
142 err = pnp_activate_dev(pdev);
143 if (err < 0) {
144 snd_printk(KERN_ERR PFX "AUDIO pnp configure failure\n");
145 kfree(cfg);
146 return err;
148 port[dev] = pnp_port_start(pdev, 0);
149 dma8[dev] = pnp_dma(pdev, 1);
150 dma16[dev] = pnp_dma(pdev, 0);
151 irq[dev] = pnp_irq(pdev, 0);
153 pdev = acard->devmpu;
154 if (pdev != NULL) {
155 pnp_init_resource_table(cfg);
156 if (mpu_port[dev] != SNDRV_AUTO_PORT)
157 pnp_resource_change(&cfg->port_resource[0], mpu_port[dev], 2);
158 if (mpu_irq[dev] != SNDRV_AUTO_IRQ)
159 pnp_resource_change(&cfg->irq_resource[0], mpu_irq[dev], 1);
160 if ((pnp_manual_config_dev(pdev, cfg, 0)) < 0)
161 snd_printk(KERN_ERR PFX "MPU401 the requested resources are invalid, using auto config\n");
162 err = pnp_activate_dev(pdev);
163 if (err < 0)
164 goto __mpu_error;
165 mpu_port[dev] = pnp_port_start(pdev, 0);
166 mpu_irq[dev] = pnp_irq(pdev, 0);
167 } else {
168 __mpu_error:
169 if (pdev) {
170 pnp_release_card_device(pdev);
171 snd_printk(KERN_ERR PFX "MPU401 pnp configure failure, skipping\n");
173 acard->devmpu = NULL;
174 mpu_port[dev] = -1;
177 pdev = acard->devopl;
178 if (pdev != NULL) {
179 pnp_init_resource_table(cfg);
180 if (fm_port[dev] != SNDRV_AUTO_PORT)
181 pnp_resource_change(&cfg->port_resource[0], fm_port[dev], 4);
182 if ((pnp_manual_config_dev(pdev, cfg, 0)) < 0)
183 snd_printk(KERN_ERR PFX "OPL3 the requested resources are invalid, using auto config\n");
184 err = pnp_activate_dev(pdev);
185 if (err < 0)
186 goto __fm_error;
187 fm_port[dev] = pnp_port_start(pdev, 0);
188 } else {
189 __fm_error:
190 if (pdev) {
191 pnp_release_card_device(pdev);
192 snd_printk(KERN_ERR PFX "OPL3 pnp configure failure, skipping\n");
194 acard->devopl = NULL;
195 fm_port[dev] = -1;
198 kfree(cfg);
199 return 0;
202 static int __devinit snd_card_als100_probe(int dev,
203 struct pnp_card_link *pcard,
204 const struct pnp_card_device_id *pid)
206 int error;
207 struct snd_sb *chip;
208 struct snd_card *card;
209 struct snd_card_als100 *acard;
210 struct snd_opl3 *opl3;
212 if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE,
213 sizeof(struct snd_card_als100))) == NULL)
214 return -ENOMEM;
215 acard = card->private_data;
217 if ((error = snd_card_als100_pnp(dev, acard, pcard, pid))) {
218 snd_card_free(card);
219 return error;
221 snd_card_set_dev(card, &pcard->card->dev);
223 if ((error = snd_sbdsp_create(card, port[dev],
224 irq[dev],
225 snd_sb16dsp_interrupt,
226 dma8[dev],
227 dma16[dev],
228 SB_HW_ALS100, &chip)) < 0) {
229 snd_card_free(card);
230 return error;
232 acard->chip = chip;
234 strcpy(card->driver, "ALS100");
235 strcpy(card->shortname, "Avance Logic ALS100");
236 sprintf(card->longname, "%s, %s at 0x%lx, irq %d, dma %d&%d",
237 card->shortname, chip->name, chip->port,
238 irq[dev], dma8[dev], dma16[dev]);
240 if ((error = snd_sb16dsp_pcm(chip, 0, NULL)) < 0) {
241 snd_card_free(card);
242 return error;
245 if ((error = snd_sbmixer_new(chip)) < 0) {
246 snd_card_free(card);
247 return error;
250 if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
251 if (snd_mpu401_uart_new(card, 0, MPU401_HW_ALS100,
252 mpu_port[dev], 0,
253 mpu_irq[dev], IRQF_DISABLED,
254 NULL) < 0)
255 snd_printk(KERN_ERR PFX "no MPU-401 device at 0x%lx\n", mpu_port[dev]);
258 if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
259 if (snd_opl3_create(card,
260 fm_port[dev], fm_port[dev] + 2,
261 OPL3_HW_AUTO, 0, &opl3) < 0) {
262 snd_printk(KERN_ERR PFX "no OPL device at 0x%lx-0x%lx\n",
263 fm_port[dev], fm_port[dev] + 2);
264 } else {
265 if ((error = snd_opl3_timer_new(opl3, 0, 1)) < 0) {
266 snd_card_free(card);
267 return error;
269 if ((error = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
270 snd_card_free(card);
271 return error;
276 if ((error = snd_card_register(card)) < 0) {
277 snd_card_free(card);
278 return error;
280 pnp_set_card_drvdata(pcard, card);
281 return 0;
284 static unsigned int __devinitdata als100_devices;
286 static int __devinit snd_als100_pnp_detect(struct pnp_card_link *card,
287 const struct pnp_card_device_id *id)
289 static int dev;
290 int res;
292 for ( ; dev < SNDRV_CARDS; dev++) {
293 if (!enable[dev])
294 continue;
295 res = snd_card_als100_probe(dev, card, id);
296 if (res < 0)
297 return res;
298 dev++;
299 als100_devices++;
300 return 0;
302 return -ENODEV;
305 static void __devexit snd_als100_pnp_remove(struct pnp_card_link * pcard)
307 snd_card_free(pnp_get_card_drvdata(pcard));
308 pnp_set_card_drvdata(pcard, NULL);
311 #ifdef CONFIG_PM
312 static int snd_als100_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
314 struct snd_card *card = pnp_get_card_drvdata(pcard);
315 struct snd_card_als100 *acard = card->private_data;
316 struct snd_sb *chip = acard->chip;
318 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
319 snd_pcm_suspend_all(chip->pcm);
320 snd_sbmixer_suspend(chip);
321 return 0;
324 static int snd_als100_pnp_resume(struct pnp_card_link *pcard)
326 struct snd_card *card = pnp_get_card_drvdata(pcard);
327 struct snd_card_als100 *acard = card->private_data;
328 struct snd_sb *chip = acard->chip;
330 snd_sbdsp_reset(chip);
331 snd_sbmixer_resume(chip);
332 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
333 return 0;
335 #endif
337 static struct pnp_card_driver als100_pnpc_driver = {
338 .flags = PNP_DRIVER_RES_DISABLE,
339 .name = "als100",
340 .id_table = snd_als100_pnpids,
341 .probe = snd_als100_pnp_detect,
342 .remove = __devexit_p(snd_als100_pnp_remove),
343 #ifdef CONFIG_PM
344 .suspend = snd_als100_pnp_suspend,
345 .resume = snd_als100_pnp_resume,
346 #endif
349 static int __init alsa_card_als100_init(void)
351 int err;
353 err = pnp_register_card_driver(&als100_pnpc_driver);
354 if (err)
355 return err;
357 if (!als100_devices) {
358 pnp_unregister_card_driver(&als100_pnpc_driver);
359 #ifdef MODULE
360 snd_printk(KERN_ERR "no ALS100 based soundcards found\n");
361 #endif
362 return -ENODEV;
364 return 0;
367 static void __exit alsa_card_als100_exit(void)
369 pnp_unregister_card_driver(&als100_pnpc_driver);
372 module_init(alsa_card_als100_init)
373 module_exit(alsa_card_als100_exit)