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 
35 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
36 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
37 MODULE_LICENSE("GPL");
38 MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
39 
40 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
41 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
42 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable switches */
43 
44 module_param_array(index, int, NULL, 0444);
45 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
46 module_param_array(id, charp, NULL, 0444);
47 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
48 module_param_array(enable, bool, NULL, 0444);
49 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
50 
51 /*
52  */
53 
54 static struct snd_card *card_list[SNDRV_CARDS];
55 
56 /*
57  * prototypes
58  */
59 static int pdacf_config(struct pcmcia_device *link);
60 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
61 
62 static 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  */
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, 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  */
163 static 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  */
196 static 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 
213 static 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);
244 failed_preirq:
245 	pcmcia_disable_device(link);
246 	return -ENODEV;
247 }
248 
249 #ifdef CONFIG_PM
250 
251 static 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 
264 static 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  */
285 static 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 };
290 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
291 
292 static 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 };
303 module_pcmcia_driver(pdacf_cs_driver);
304