xref: /linux/sound/pcmcia/pdaudiocf/pdaudiocf.c (revision ccea15f45eb0ab12d658f88b5d4be005cb2bb1a7) 
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>
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 
36 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
37 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
38 MODULE_LICENSE("GPL");
39 MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
40 
41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
43 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable switches */
44 
45 module_param_array(index, int, NULL, 0444);
46 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
47 module_param_array(id, charp, NULL, 0444);
48 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
49 module_param_array(enable, bool, NULL, 0444);
50 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
51 
52 /*
53  */
54 
55 static struct snd_card *card_list[SNDRV_CARDS];
56 
57 /*
58  * prototypes
59  */
60 static int pdacf_config(struct pcmcia_device *link);
61 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
62 
63 static void pdacf_release(struct pcmcia_device *link)
64 {
65 	pcmcia_disable_device(link);
66 }
67 
68 /*
69  * destructor
70  */
71 static int snd_pdacf_free(struct snd_pdacf *pdacf)
72 {
73 	struct pcmcia_device *link = pdacf->p_dev;
74 
75 	pdacf_release(link);
76 
77 	card_list[pdacf->index] = NULL;
78 	pdacf->card = NULL;
79 
80 	kfree(pdacf);
81 	return 0;
82 }
83 
84 static int snd_pdacf_dev_free(struct snd_device *device)
85 {
86 	struct snd_pdacf *chip = device->device_data;
87 	return snd_pdacf_free(chip);
88 }
89 
90 /*
91  * snd_pdacf_attach - attach callback for cs
92  */
93 static int snd_pdacf_probe(struct pcmcia_device *link)
94 {
95 	int i;
96 	struct snd_pdacf *pdacf;
97 	struct snd_card *card;
98 	static struct snd_device_ops ops = {
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");
110 		return -EINVAL;
111 	}
112 	if (! enable[i])
113 		return -ENODEV; /* disabled explicitly */
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");
119 		return -ENOMEM;
120 	}
121 
122 	pdacf = snd_pdacf_create(card);
123 	if (! pdacf)
124 		return -EIO;
125 
126 	if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
127 		kfree(pdacf);
128 		snd_card_free(card);
129 		return -ENODEV;
130 	}
131 
132 	pdacf->index = i;
133 	card_list[i] = card;
134 
135 	pdacf->p_dev = link;
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 
152 	return pdacf_config(link);
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  */
166 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
167 {
168 	int err;
169 	struct snd_card *card = pdacf->card;
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 
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  */
199 static void snd_pdacf_detach(struct pcmcia_device *link)
200 {
201 	struct snd_pdacf *chip = link->priv;
202 
203 	snd_printdd(KERN_DEBUG "pdacf_detach called\n");
204 
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) \
217 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
218 
219 static int pdacf_config(struct pcmcia_device *link)
220 {
221 	struct snd_pdacf *pdacf = link->priv;
222 	tuple_t tuple;
223 	cisparse_t *parse = NULL;
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");
231 		return -ENOMEM;
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;
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));
242 	link->conf.ConfigBase = parse->config.base;
243 	link->conf.ConfigIndex = 0x5;
244 	kfree(parse);
245 
246 	CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
247 	CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
248 	CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
249 
250 	if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
251 		goto failed;
252 
253 	link->dev_node = &pdacf->node;
254 	return 0;
255 
256 cs_failed:
257 	cs_error(link, last_fn, last_ret);
258 failed:
259 	pcmcia_disable_device(link);
260 	return -ENODEV;
261 }
262 
263 #ifdef CONFIG_PM
264 
265 static int pdacf_suspend(struct pcmcia_device *link)
266 {
267 	struct snd_pdacf *chip = link->priv;
268 
269 	snd_printdd(KERN_DEBUG "SUSPEND\n");
270 	if (chip) {
271 		snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
272 		snd_pdacf_suspend(chip, PMSG_SUSPEND);
273 	}
274 
275 	return 0;
276 }
277 
278 static int pdacf_resume(struct pcmcia_device *link)
279 {
280 	struct snd_pdacf *chip = link->priv;
281 
282 	snd_printdd(KERN_DEBUG "RESUME\n");
283 	if (pcmcia_dev_present(link)) {
284 		if (chip) {
285 			snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
286 			snd_pdacf_resume(chip);
287 		}
288 	}
289 	snd_printdd(KERN_DEBUG "resume done!\n");
290 
291 	return 0;
292 }
293 
294 #endif
295 
296 /*
297  * Module entry points
298  */
299 static struct pcmcia_device_id snd_pdacf_ids[] = {
300 	PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45),
301 	PCMCIA_DEVICE_NULL
302 };
303 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
304 
305 static struct pcmcia_driver pdacf_cs_driver = {
306 	.owner		= THIS_MODULE,
307 	.drv		= {
308 		.name	= "snd-pdaudiocf",
309 	},
310 	.probe		= snd_pdacf_probe,
311 	.remove		= snd_pdacf_detach,
312 	.id_table	= snd_pdacf_ids,
313 #ifdef CONFIG_PM
314 	.suspend	= pdacf_suspend,
315 	.resume		= pdacf_resume,
316 #endif
317 
318 };
319 
320 static int __init init_pdacf(void)
321 {
322 	return pcmcia_register_driver(&pdacf_cs_driver);
323 }
324 
325 static void __exit exit_pdacf(void)
326 {
327 	pcmcia_unregister_driver(&pdacf_cs_driver);
328 }
329 
330 module_init(init_pdacf);
331 module_exit(exit_pdacf);
332