summaryrefslogtreecommitdiff
path: root/sound/pcmcia/pdaudiocf/pdaudiocf.c
blob: c8622f5f7c3a5bd4933425385fc5a6408447244b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
/*
 * Driver for Sound Core PDAudioCF soundcard
 *
 * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.cz>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <sound/driver.h>
#include <sound/core.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <pcmcia/version.h>
#include <pcmcia/ciscode.h>
#include <pcmcia/cisreg.h>
#include "pdaudiocf.h"
#include <sound/initval.h>
#include <linux/init.h>

/*
 */

#define CARD_NAME	"PDAudio-CF"

MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Sound Core " CARD_NAME);
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable switches */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");

/*
 */

static dev_info_t dev_info = "snd-pdaudiocf";
static snd_card_t *card_list[SNDRV_CARDS];
static dev_link_t *dev_list;

/*
 * prototypes
 */
static void pdacf_config(dev_link_t *link);
static int pdacf_event(event_t event, int priority, event_callback_args_t *args);
static void snd_pdacf_detach(dev_link_t *link);

static void pdacf_release(dev_link_t *link)
{
	if (link->state & DEV_CONFIG) {
		/* release cs resources */
		pcmcia_release_configuration(link->handle);
		pcmcia_release_io(link->handle, &link->io);
		pcmcia_release_irq(link->handle, &link->irq);
		link->state &= ~DEV_CONFIG;
	}
}

/*
 * destructor
 */
static int snd_pdacf_free(pdacf_t *pdacf)
{
	dev_link_t *link = &pdacf->link;

	pdacf_release(link);

	/* Break the link with Card Services */
	if (link->handle)
		pcmcia_deregister_client(link->handle);

	card_list[pdacf->index] = NULL;
	pdacf->card = NULL;

	kfree(pdacf);
	return 0;
}

static int snd_pdacf_dev_free(snd_device_t *device)
{
	pdacf_t *chip = device->device_data;
	return snd_pdacf_free(chip);
}

/*
 * snd_pdacf_attach - attach callback for cs
 */
static dev_link_t *snd_pdacf_attach(void)
{
	client_reg_t client_reg;	/* Register with cardmgr */
	dev_link_t *link;		/* Info for cardmgr */
	int i, ret;
	pdacf_t *pdacf;
	snd_card_t *card;
	static snd_device_ops_t ops = {
		.dev_free =	snd_pdacf_dev_free,
	};

	snd_printdd(KERN_DEBUG "pdacf_attach called\n");
	/* find an empty slot from the card list */
	for (i = 0; i < SNDRV_CARDS; i++) {
		if (! card_list[i])
			break;
	}
	if (i >= SNDRV_CARDS) {
		snd_printk(KERN_ERR "pdacf: too many cards found\n");
		return NULL;
	}
	if (! enable[i])
		return NULL; /* disabled explicitly */

	/* ok, create a card instance */
	card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
	if (card == NULL) {
		snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
		return NULL;
	}

	pdacf = snd_pdacf_create(card);
	if (! pdacf)
		return NULL;

	if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {
		kfree(pdacf);
		snd_card_free(card);
		return NULL;
	}

	pdacf->index = i;
	card_list[i] = card;

	link = &pdacf->link;
	link->priv = pdacf;

	link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
	link->io.NumPorts1 = 16;

	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
	// link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;

	link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
	link->irq.Handler = pdacf_interrupt;
	link->irq.Instance = pdacf;
	link->conf.Attributes = CONF_ENABLE_IRQ;
	link->conf.IntType = INT_MEMORY_AND_IO;
	link->conf.ConfigIndex = 1;
	link->conf.Present = PRESENT_OPTION;

	/* Chain drivers */
	link->next = dev_list;
	dev_list = link;

	/* Register with Card Services */
	client_reg.dev_info = &dev_info;
	client_reg.Version = 0x0210;
	client_reg.event_callback_args.client_data = link;

	ret = pcmcia_register_client(&link->handle, &client_reg);
	if (ret != CS_SUCCESS) {
		cs_error(link->handle, RegisterClient, ret);
		snd_pdacf_detach(link);
		return NULL;
	}

	return link;
}


/**
 * snd_pdacf_assign_resources - initialize the hardware and card instance.
 * @port: i/o port for the card
 * @irq: irq number for the card
 *
 * this function assigns the specified port and irq, boot the card,
 * create pcm and control instances, and initialize the rest hardware.
 *
 * returns 0 if successful, or a negative error code.
 */
static int snd_pdacf_assign_resources(pdacf_t *pdacf, int port, int irq)
{
	int err;
	snd_card_t *card = pdacf->card;

	snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
	pdacf->port = port;
	pdacf->irq = irq;
	pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;

	err = snd_pdacf_ak4117_create(pdacf);
	if (err < 0)
		return err;	

	strcpy(card->driver, "PDAudio-CF");
	sprintf(card->shortname, "Core Sound %s", card->driver);
	sprintf(card->longname, "%s at 0x%x, irq %i",
		card->shortname, port, irq);

	err = snd_pdacf_pcm_new(pdacf);
	if (err < 0)
		return err;

	snd_card_set_pm_callback(card, snd_pdacf_suspend, snd_pdacf_resume, pdacf);

	if ((err = snd_card_register(card)) < 0)
		return err;

	return 0;
}


/*
 * snd_pdacf_detach - detach callback for cs
 */
static void snd_pdacf_detach(dev_link_t *link)
{
	pdacf_t *chip = link->priv;

	snd_printdd(KERN_DEBUG "pdacf_detach called\n");
	/* Remove the interface data from the linked list */
	{
		dev_link_t **linkp;
		/* Locate device structure */
		for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
			if (*linkp == link)
				break;
		if (*linkp)
			*linkp = link->next;
	}
	if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
		snd_pdacf_powerdown(chip);
	chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
	snd_card_disconnect(chip->card);
	snd_card_free_in_thread(chip->card);
}

/*
 * configuration callback
 */

#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

static void pdacf_config(dev_link_t *link)
{
	client_handle_t handle = link->handle;
	pdacf_t *pdacf = link->priv;
	tuple_t tuple;
	cisparse_t *parse = NULL;
	config_info_t conf;
	u_short buf[32];
	int last_fn, last_ret;

	snd_printdd(KERN_DEBUG "pdacf_config called\n");
	parse = kmalloc(sizeof(*parse), GFP_KERNEL);
	if (! parse) {
		snd_printk(KERN_ERR "pdacf_config: cannot allocate\n");
		return;
	}
	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
	tuple.Attributes = 0;
	tuple.TupleData = (cisdata_t *)buf;
	tuple.TupleDataMax = sizeof(buf);
	tuple.TupleOffset = 0;
	tuple.DesiredTuple = CISTPL_CONFIG;
	CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
	CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
	CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, parse));
	link->conf.ConfigBase = parse->config.base;
	link->conf.ConfigIndex = 0x5;
	kfree(parse);

	CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
	link->conf.Vcc = conf.Vcc;

	/* Configure card */
	link->state |= DEV_CONFIG;

	CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
	CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
	CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));

	if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
		goto failed;

	link->dev = &pdacf->node;
	link->state &= ~DEV_CONFIG_PENDING;
	return;

cs_failed:
	cs_error(link->handle, last_fn, last_ret);
failed:
	pcmcia_release_configuration(link->handle);
	pcmcia_release_io(link->handle, &link->io);
	pcmcia_release_irq(link->handle, &link->irq);
}

/*
 * event callback
 */
static int pdacf_event(event_t event, int priority, event_callback_args_t *args)
{
	dev_link_t *link = args->client_data;
	pdacf_t *chip = link->priv;

	switch (event) {
	case CS_EVENT_CARD_REMOVAL:
		snd_printdd(KERN_DEBUG "CARD_REMOVAL..\n");
		link->state &= ~DEV_PRESENT;
		if (link->state & DEV_CONFIG) {
			chip->chip_status |= PDAUDIOCF_STAT_IS_STALE;
		}
		break;
	case CS_EVENT_CARD_INSERTION:
		snd_printdd(KERN_DEBUG "CARD_INSERTION..\n");
		link->state |= DEV_PRESENT;
		pdacf_config(link);
		break;
#ifdef CONFIG_PM
	case CS_EVENT_PM_SUSPEND:
		snd_printdd(KERN_DEBUG "SUSPEND\n");
		link->state |= DEV_SUSPEND;
		if (chip) {
			snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
			snd_pdacf_suspend(chip->card, PMSG_SUSPEND);
		}
		/* Fall through... */
	case CS_EVENT_RESET_PHYSICAL:
		snd_printdd(KERN_DEBUG "RESET_PHYSICAL\n");
		if (link->state & DEV_CONFIG)
			pcmcia_release_configuration(link->handle);
		break;
	case CS_EVENT_PM_RESUME:
		snd_printdd(KERN_DEBUG "RESUME\n");
		link->state &= ~DEV_SUSPEND;
		/* Fall through... */
	case CS_EVENT_CARD_RESET:
		snd_printdd(KERN_DEBUG "CARD_RESET\n");
		if (DEV_OK(link)) {
			snd_printdd(KERN_DEBUG "requestconfig...\n");
			pcmcia_request_configuration(link->handle, &link->conf);
			if (chip) {
				snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
				snd_pdacf_resume(chip->card);
			}
		}
		snd_printdd(KERN_DEBUG "resume done!\n");
		break;
#endif
	}
	return 0;
}

/*
 * Module entry points
 */
static struct pcmcia_device_id snd_pdacf_ids[] = {
	PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);

static struct pcmcia_driver pdacf_cs_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "snd-pdaudiocf",
	},
	.attach		= snd_pdacf_attach,
	.event		= pdacf_event,
	.detach		= snd_pdacf_detach,
	.id_table	= snd_pdacf_ids,
};

static int __init init_pdacf(void)
{
	return pcmcia_register_driver(&pdacf_cs_driver);
}

static void __exit exit_pdacf(void)
{
	pcmcia_unregister_driver(&pdacf_cs_driver);
	BUG_ON(dev_list != NULL);
}

module_init(init_pdacf);
module_exit(exit_pdacf);