[ALSA] Unregister device files at disconnection
[linux-2.6-block.git] / sound / pcmcia / pdaudiocf / pdaudiocf.c
CommitLineData
1da177e4
LT
1/*
2 * Driver for Sound Core PDAudioCF soundcard
3 *
4 * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.cz>
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 <sound/driver.h>
22#include <sound/core.h>
23#include <linux/slab.h>
24#include <linux/moduleparam.h>
1da177e4
LT
25#include <pcmcia/ciscode.h>
26#include <pcmcia/cisreg.h>
27#include "pdaudiocf.h"
28#include <sound/initval.h>
29#include <linux/init.h>
30
31/*
32 */
33
34#define CARD_NAME "PDAudio-CF"
35
36MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
37MODULE_DESCRIPTION("Sound Core " CARD_NAME);
38MODULE_LICENSE("GPL");
39MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
40
41static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
42static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
43static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */
44
45module_param_array(index, int, NULL, 0444);
46MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
47module_param_array(id, charp, NULL, 0444);
48MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
49module_param_array(enable, bool, NULL, 0444);
50MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
51
52/*
53 */
54
db131548 55static struct snd_card *card_list[SNDRV_CARDS];
1da177e4
LT
56
57/*
58 * prototypes
59 */
15b99ac1 60static int pdacf_config(struct pcmcia_device *link);
efe3cd10 61static void snd_pdacf_detach(struct pcmcia_device *p_dev);
1da177e4 62
fba395ee 63static void pdacf_release(struct pcmcia_device *link)
1da177e4 64{
fba395ee 65 pcmcia_disable_device(link);
1da177e4
LT
66}
67
68/*
69 * destructor
70 */
db131548 71static int snd_pdacf_free(struct snd_pdacf *pdacf)
1da177e4 72{
fba395ee 73 struct pcmcia_device *link = pdacf->p_dev;
1da177e4
LT
74
75 pdacf_release(link);
76
1da177e4
LT
77 card_list[pdacf->index] = NULL;
78 pdacf->card = NULL;
79
80 kfree(pdacf);
81 return 0;
82}
83
db131548 84static int snd_pdacf_dev_free(struct snd_device *device)
1da177e4 85{
db131548 86 struct snd_pdacf *chip = device->device_data;
1da177e4
LT
87 return snd_pdacf_free(chip);
88}
89
90/*
91 * snd_pdacf_attach - attach callback for cs
92 */
15b99ac1 93static int snd_pdacf_probe(struct pcmcia_device *link)
1da177e4 94{
efe3cd10 95 int i;
db131548
TI
96 struct snd_pdacf *pdacf;
97 struct snd_card *card;
98 static struct snd_device_ops ops = {
1da177e4
LT
99 .dev_free = snd_pdacf_dev_free,
100 };
101
102 snd_printdd(KERN_DEBUG "pdacf_attach called\n");
103 /* find an empty slot from the card list */
104 for (i = 0; i < SNDRV_CARDS; i++) {
105 if (! card_list[i])
106 break;
107 }
108 if (i >= SNDRV_CARDS) {
109 snd_printk(KERN_ERR "pdacf: too many cards found\n");
efe3cd10 110 return -EINVAL;
1da177e4
LT
111 }
112 if (! enable[i])
efe3cd10 113 return -ENODEV; /* disabled explicitly */
1da177e4
LT
114
115 /* ok, create a card instance */
116 card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
117 if (card == NULL) {
118 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
efe3cd10 119 return -ENOMEM;
1da177e4
LT
120 }
121
122 pdacf = snd_pdacf_create(card);
123 if (! pdacf)
efe3cd10 124 return -EIO;
1da177e4
LT
125
126 if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
127 kfree(pdacf);
128 snd_card_free(card);
efe3cd10 129 return -ENODEV;
1da177e4
LT
130 }
131
132 pdacf->index = i;
133 card_list[i] = card;
134
fba395ee 135 pdacf->p_dev = link;
1da177e4
LT
136 link->priv = pdacf;
137
138 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
139 link->io.NumPorts1 = 16;
140
141 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
142 // link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
143
144 link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
145 link->irq.Handler = pdacf_interrupt;
146 link->irq.Instance = pdacf;
147 link->conf.Attributes = CONF_ENABLE_IRQ;
148 link->conf.IntType = INT_MEMORY_AND_IO;
149 link->conf.ConfigIndex = 1;
150 link->conf.Present = PRESENT_OPTION;
151
15b99ac1 152 return pdacf_config(link);
1da177e4
LT
153}
154
155
156/**
157 * snd_pdacf_assign_resources - initialize the hardware and card instance.
158 * @port: i/o port for the card
159 * @irq: irq number for the card
160 *
161 * this function assigns the specified port and irq, boot the card,
162 * create pcm and control instances, and initialize the rest hardware.
163 *
164 * returns 0 if successful, or a negative error code.
165 */
db131548 166static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
1da177e4
LT
167{
168 int err;
db131548 169 struct snd_card *card = pdacf->card;
1da177e4
LT
170
171 snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
172 pdacf->port = port;
173 pdacf->irq = irq;
174 pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
175
176 err = snd_pdacf_ak4117_create(pdacf);
177 if (err < 0)
178 return err;
179
180 strcpy(card->driver, "PDAudio-CF");
181 sprintf(card->shortname, "Core Sound %s", card->driver);
182 sprintf(card->longname, "%s at 0x%x, irq %i",
183 card->shortname, port, irq);
184
185 err = snd_pdacf_pcm_new(pdacf);
186 if (err < 0)
187 return err;
188
1da177e4
LT
189 if ((err = snd_card_register(card)) < 0)
190 return err;
191
192 return 0;
193}
194
195
196/*
197 * snd_pdacf_detach - detach callback for cs
198 */
fba395ee 199static void snd_pdacf_detach(struct pcmcia_device *link)
1da177e4 200{
db131548 201 struct snd_pdacf *chip = link->priv;
1da177e4
LT
202
203 snd_printdd(KERN_DEBUG "pdacf_detach called\n");
efe3cd10 204
1da177e4
LT
205 if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
206 snd_pdacf_powerdown(chip);
207 chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
208 snd_card_disconnect(chip->card);
209 snd_card_free_in_thread(chip->card);
210}
211
212/*
213 * configuration callback
214 */
215
216#define CS_CHECK(fn, ret) \
217do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
218
15b99ac1 219static int pdacf_config(struct pcmcia_device *link)
1da177e4 220{
db131548 221 struct snd_pdacf *pdacf = link->priv;
1da177e4
LT
222 tuple_t tuple;
223 cisparse_t *parse = NULL;
1da177e4
LT
224 u_short buf[32];
225 int last_fn, last_ret;
226
227 snd_printdd(KERN_DEBUG "pdacf_config called\n");
228 parse = kmalloc(sizeof(*parse), GFP_KERNEL);
229 if (! parse) {
230 snd_printk(KERN_ERR "pdacf_config: cannot allocate\n");
15b99ac1 231 return -ENOMEM;
1da177e4
LT
232 }
233 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
234 tuple.Attributes = 0;
235 tuple.TupleData = (cisdata_t *)buf;
236 tuple.TupleDataMax = sizeof(buf);
237 tuple.TupleOffset = 0;
238 tuple.DesiredTuple = CISTPL_CONFIG;
fba395ee
DB
239 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
240 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
241 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, parse));
1da177e4
LT
242 link->conf.ConfigBase = parse->config.base;
243 link->conf.ConfigIndex = 0x5;
1da177e4 244
fba395ee
DB
245 CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
246 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
247 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4 248
cb6dd260
ES
249 kfree(parse);
250
1da177e4
LT
251 if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
252 goto failed;
253
fd238232 254 link->dev_node = &pdacf->node;
15b99ac1 255 return 0;
1da177e4
LT
256
257cs_failed:
cb6dd260 258 kfree(parse);
fba395ee 259 cs_error(link, last_fn, last_ret);
1da177e4 260failed:
fba395ee 261 pcmcia_disable_device(link);
15b99ac1 262 return -ENODEV;
1da177e4
LT
263}
264
efe3cd10
DB
265#ifdef CONFIG_PM
266
fba395ee 267static int pdacf_suspend(struct pcmcia_device *link)
1da177e4 268{
db131548 269 struct snd_pdacf *chip = link->priv;
1da177e4 270
efe3cd10 271 snd_printdd(KERN_DEBUG "SUSPEND\n");
efe3cd10
DB
272 if (chip) {
273 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
274 snd_pdacf_suspend(chip, PMSG_SUSPEND);
275 }
276
efe3cd10
DB
277 return 0;
278}
279
fba395ee 280static int pdacf_resume(struct pcmcia_device *link)
efe3cd10 281{
efe3cd10
DB
282 struct snd_pdacf *chip = link->priv;
283
284 snd_printdd(KERN_DEBUG "RESUME\n");
9940ec36 285 if (pcmcia_dev_present(link)) {
1da177e4 286 if (chip) {
efe3cd10
DB
287 snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
288 snd_pdacf_resume(chip);
1da177e4 289 }
1da177e4 290 }
efe3cd10
DB
291 snd_printdd(KERN_DEBUG "resume done!\n");
292
1da177e4
LT
293 return 0;
294}
295
efe3cd10
DB
296#endif
297
1da177e4
LT
298/*
299 * Module entry points
300 */
a4ed3598
DB
301static struct pcmcia_device_id snd_pdacf_ids[] = {
302 PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45),
303 PCMCIA_DEVICE_NULL
304};
305MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
306
1da177e4 307static struct pcmcia_driver pdacf_cs_driver = {
1e212f36
DB
308 .owner = THIS_MODULE,
309 .drv = {
310 .name = "snd-pdaudiocf",
1da177e4 311 },
15b99ac1 312 .probe = snd_pdacf_probe,
efe3cd10 313 .remove = snd_pdacf_detach,
a4ed3598 314 .id_table = snd_pdacf_ids,
efe3cd10
DB
315#ifdef CONFIG_PM
316 .suspend = pdacf_suspend,
317 .resume = pdacf_resume,
318#endif
319
1da177e4
LT
320};
321
322static int __init init_pdacf(void)
323{
324 return pcmcia_register_driver(&pdacf_cs_driver);
325}
326
327static void __exit exit_pdacf(void)
328{
329 pcmcia_unregister_driver(&pdacf_cs_driver);
1da177e4
LT
330}
331
332module_init(init_pdacf);
333module_exit(exit_pdacf);