1/*
2 * Driver for Sound Core PDAudioCF soundcard
3 *
4 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.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/core.h>
22#include <linux/slab.h>
23#include <linux/module.h>
24#include <pcmcia/ciscode.h>
25#include <pcmcia/cisreg.h>
26#include "pdaudiocf.h"
27#include <sound/initval.h>
28#include <linux/init.h>
29
30/*
31 */
32
33#define CARD_NAME	"PDAudio-CF"
34
35MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
36MODULE_DESCRIPTION("Sound Core " CARD_NAME);
37MODULE_LICENSE("GPL");
38MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
39
40static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
41static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
42static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable switches */
43
44module_param_array(index, int, NULL, 0444);
45MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
46module_param_array(id, charp, NULL, 0444);
47MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
48module_param_array(enable, bool, NULL, 0444);
49MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
50
51/*
52 */
53
54static struct snd_card *card_list[SNDRV_CARDS];
55
56/*
57 * prototypes
58 */
59static int pdacf_config(struct pcmcia_device *link);
60static void snd_pdacf_detach(struct pcmcia_device *p_dev);
61
62static void pdacf_release(struct pcmcia_device *link)
63{
64	free_irq(link->irq, link->priv);
65	pcmcia_disable_device(link);
66}
67
68/*
69 * destructor
70 */
71static 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
84static 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 */
93static int snd_pdacf_probe(struct pcmcia_device *link)
94{
95	int i, err;
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	err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
117			   0, &card);
118	if (err < 0) {
119		snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
120		return err;
121	}
122
123	pdacf = snd_pdacf_create(card);
124	if (!pdacf) {
125		snd_card_free(card);
126		return -ENOMEM;
127	}
128
129	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
130	if (err < 0) {
131		kfree(pdacf);
132		snd_card_free(card);
133		return err;
134	}
135
136	pdacf->index = i;
137	card_list[i] = card;
138
139	pdacf->p_dev = link;
140	link->priv = pdacf;
141
142	link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
143	link->resource[0]->end = 16;
144
145	link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
146	link->config_index = 1;
147	link->config_regs = PRESENT_OPTION;
148
149	return pdacf_config(link);
150}
151
152
153/**
154 * snd_pdacf_assign_resources - initialize the hardware and card instance.
155 * @port: i/o port for the card
156 * @irq: irq number for the card
157 *
158 * this function assigns the specified port and irq, boot the card,
159 * create pcm and control instances, and initialize the rest hardware.
160 *
161 * returns 0 if successful, or a negative error code.
162 */
163static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
164{
165	int err;
166	struct snd_card *card = pdacf->card;
167
168	snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
169	pdacf->port = port;
170	pdacf->irq = irq;
171	pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
172
173	err = snd_pdacf_ak4117_create(pdacf);
174	if (err < 0)
175		return err;
176
177	strcpy(card->driver, "PDAudio-CF");
178	sprintf(card->shortname, "Core Sound %s", card->driver);
179	sprintf(card->longname, "%s at 0x%x, irq %i",
180		card->shortname, port, irq);
181
182	err = snd_pdacf_pcm_new(pdacf);
183	if (err < 0)
184		return err;
185
186	if ((err = snd_card_register(card)) < 0)
187		return err;
188
189	return 0;
190}
191
192
193/*
194 * snd_pdacf_detach - detach callback for cs
195 */
196static void snd_pdacf_detach(struct pcmcia_device *link)
197{
198	struct snd_pdacf *chip = link->priv;
199
200	snd_printdd(KERN_DEBUG "pdacf_detach called\n");
201
202	if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
203		snd_pdacf_powerdown(chip);
204	chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
205	snd_card_disconnect(chip->card);
206	snd_card_free_when_closed(chip->card);
207}
208
209/*
210 * configuration callback
211 */
212
213static int pdacf_config(struct pcmcia_device *link)
214{
215	struct snd_pdacf *pdacf = link->priv;
216	int ret;
217
218	snd_printdd(KERN_DEBUG "pdacf_config called\n");
219	link->config_index = 0x5;
220	link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
221
222	ret = pcmcia_request_io(link);
223	if (ret)
224		goto failed_preirq;
225
226	ret = request_threaded_irq(link->irq, pdacf_interrupt,
227				   pdacf_threaded_irq,
228				   IRQF_SHARED, link->devname, link->priv);
229	if (ret)
230		goto failed_preirq;
231
232	ret = pcmcia_enable_device(link);
233	if (ret)
234		goto failed;
235
236	if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
237					link->irq) < 0)
238		goto failed;
239
240	return 0;
241
242 failed:
243	free_irq(link->irq, link->priv);
244failed_preirq:
245	pcmcia_disable_device(link);
246	return -ENODEV;
247}
248
249#ifdef CONFIG_PM
250
251static int pdacf_suspend(struct pcmcia_device *link)
252{
253	struct snd_pdacf *chip = link->priv;
254
255	snd_printdd(KERN_DEBUG "SUSPEND\n");
256	if (chip) {
257		snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
258		snd_pdacf_suspend(chip);
259	}
260
261	return 0;
262}
263
264static int pdacf_resume(struct pcmcia_device *link)
265{
266	struct snd_pdacf *chip = link->priv;
267
268	snd_printdd(KERN_DEBUG "RESUME\n");
269	if (pcmcia_dev_present(link)) {
270		if (chip) {
271			snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
272			snd_pdacf_resume(chip);
273		}
274	}
275	snd_printdd(KERN_DEBUG "resume done!\n");
276
277	return 0;
278}
279
280#endif
281
282/*
283 * Module entry points
284 */
285static const struct pcmcia_device_id snd_pdacf_ids[] = {
286	/* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
287	PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
288	PCMCIA_DEVICE_NULL
289};
290MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
291
292static struct pcmcia_driver pdacf_cs_driver = {
293	.owner		= THIS_MODULE,
294	.name		= "snd-pdaudiocf",
295	.probe		= snd_pdacf_probe,
296	.remove		= snd_pdacf_detach,
297	.id_table	= snd_pdacf_ids,
298#ifdef CONFIG_PM
299	.suspend	= pdacf_suspend,
300	.resume		= pdacf_resume,
301#endif
302};
303module_pcmcia_driver(pdacf_cs_driver);
304