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/moduleparam.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 int 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 	pcmcia_disable_device(link);
65 }
66 
67 /*
68  * destructor
69  */
70 static int snd_pdacf_free(struct snd_pdacf *pdacf)
71 {
72 	struct pcmcia_device *link = pdacf->p_dev;
73 
74 	pdacf_release(link);
75 
76 	card_list[pdacf->index] = NULL;
77 	pdacf->card = NULL;
78 
79 	kfree(pdacf);
80 	return 0;
81 }
82 
83 static int snd_pdacf_dev_free(struct snd_device *device)
84 {
85 	struct snd_pdacf *chip = device->device_data;
86 	return snd_pdacf_free(chip);
87 }
88 
89 /*
90  * snd_pdacf_attach - attach callback for cs
91  */
92 static int snd_pdacf_probe(struct pcmcia_device *link)
93 {
94 	int i, err;
95 	struct snd_pdacf *pdacf;
96 	struct snd_card *card;
97 	static struct snd_device_ops ops = {
98 		.dev_free =	snd_pdacf_dev_free,
99 	};
100 
101 	snd_printdd(KERN_DEBUG "pdacf_attach called\n");
102 	/* find an empty slot from the card list */
103 	for (i = 0; i < SNDRV_CARDS; i++) {
104 		if (! card_list[i])
105 			break;
106 	}
107 	if (i >= SNDRV_CARDS) {
108 		snd_printk(KERN_ERR "pdacf: too many cards found\n");
109 		return -EINVAL;
110 	}
111 	if (! enable[i])
112 		return -ENODEV; /* disabled explicitly */
113 
114 	/* ok, create a card instance */
115 	err = snd_card_create(index[i], id[i], THIS_MODULE, 0, &card);
116 	if (err < 0) {
117 		snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
118 		return err;
119 	}
120 
121 	pdacf = snd_pdacf_create(card);
122 	if (!pdacf) {
123 		snd_card_free(card);
124 		return -ENOMEM;
125 	}
126 
127 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
128 	if (err < 0) {
129 		kfree(pdacf);
130 		snd_card_free(card);
131 		return err;
132 	}
133 
134 	snd_card_set_dev(card, &handle_to_dev(link));
135 
136 	pdacf->index = i;
137 	card_list[i] = card;
138 
139 	pdacf->p_dev = link;
140 	link->priv = pdacf;
141 
142 	link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
143 	link->io.NumPorts1 = 16;
144 
145 	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;
146 	// link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
147 
148 	link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;
149 	link->irq.Handler = pdacf_interrupt;
150 	link->irq.Instance = pdacf;
151 	link->conf.Attributes = CONF_ENABLE_IRQ;
152 	link->conf.IntType = INT_MEMORY_AND_IO;
153 	link->conf.ConfigIndex = 1;
154 	link->conf.Present = PRESENT_OPTION;
155 
156 	return pdacf_config(link);
157 }
158 
159 
160 /**
161  * snd_pdacf_assign_resources - initialize the hardware and card instance.
162  * @port: i/o port for the card
163  * @irq: irq number for the card
164  *
165  * this function assigns the specified port and irq, boot the card,
166  * create pcm and control instances, and initialize the rest hardware.
167  *
168  * returns 0 if successful, or a negative error code.
169  */
170 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
171 {
172 	int err;
173 	struct snd_card *card = pdacf->card;
174 
175 	snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
176 	pdacf->port = port;
177 	pdacf->irq = irq;
178 	pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
179 
180 	err = snd_pdacf_ak4117_create(pdacf);
181 	if (err < 0)
182 		return err;
183 
184 	strcpy(card->driver, "PDAudio-CF");
185 	sprintf(card->shortname, "Core Sound %s", card->driver);
186 	sprintf(card->longname, "%s at 0x%x, irq %i",
187 		card->shortname, port, irq);
188 
189 	err = snd_pdacf_pcm_new(pdacf);
190 	if (err < 0)
191 		return err;
192 
193 	if ((err = snd_card_register(card)) < 0)
194 		return err;
195 
196 	return 0;
197 }
198 
199 
200 /*
201  * snd_pdacf_detach - detach callback for cs
202  */
203 static void snd_pdacf_detach(struct pcmcia_device *link)
204 {
205 	struct snd_pdacf *chip = link->priv;
206 
207 	snd_printdd(KERN_DEBUG "pdacf_detach called\n");
208 
209 	if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
210 		snd_pdacf_powerdown(chip);
211 	chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
212 	snd_card_disconnect(chip->card);
213 	snd_card_free_when_closed(chip->card);
214 }
215 
216 /*
217  * configuration callback
218  */
219 
220 #define CS_CHECK(fn, ret) \
221 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
222 
223 static int pdacf_config(struct pcmcia_device *link)
224 {
225 	struct snd_pdacf *pdacf = link->priv;
226 	int last_fn, last_ret;
227 
228 	snd_printdd(KERN_DEBUG "pdacf_config called\n");
229 	link->conf.ConfigIndex = 0x5;
230 
231 	CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
232 	CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
233 	CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
234 
235 	if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
236 		goto failed;
237 
238 	link->dev_node = &pdacf->node;
239 	return 0;
240 
241 cs_failed:
242 	cs_error(link, last_fn, last_ret);
243 failed:
244 	pcmcia_disable_device(link);
245 	return -ENODEV;
246 }
247 
248 #ifdef CONFIG_PM
249 
250 static int pdacf_suspend(struct pcmcia_device *link)
251 {
252 	struct snd_pdacf *chip = link->priv;
253 
254 	snd_printdd(KERN_DEBUG "SUSPEND\n");
255 	if (chip) {
256 		snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
257 		snd_pdacf_suspend(chip, PMSG_SUSPEND);
258 	}
259 
260 	return 0;
261 }
262 
263 static int pdacf_resume(struct pcmcia_device *link)
264 {
265 	struct snd_pdacf *chip = link->priv;
266 
267 	snd_printdd(KERN_DEBUG "RESUME\n");
268 	if (pcmcia_dev_present(link)) {
269 		if (chip) {
270 			snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
271 			snd_pdacf_resume(chip);
272 		}
273 	}
274 	snd_printdd(KERN_DEBUG "resume done!\n");
275 
276 	return 0;
277 }
278 
279 #endif
280 
281 /*
282  * Module entry points
283  */
284 static struct pcmcia_device_id snd_pdacf_ids[] = {
285 	/* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
286 	PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
287 	PCMCIA_DEVICE_NULL
288 };
289 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
290 
291 static struct pcmcia_driver pdacf_cs_driver = {
292 	.owner		= THIS_MODULE,
293 	.drv		= {
294 		.name	= "snd-pdaudiocf",
295 	},
296 	.probe		= snd_pdacf_probe,
297 	.remove		= snd_pdacf_detach,
298 	.id_table	= snd_pdacf_ids,
299 #ifdef CONFIG_PM
300 	.suspend	= pdacf_suspend,
301 	.resume		= pdacf_resume,
302 #endif
303 
304 };
305 
306 static int __init init_pdacf(void)
307 {
308 	return pcmcia_register_driver(&pdacf_cs_driver);
309 }
310 
311 static void __exit exit_pdacf(void)
312 {
313 	pcmcia_unregister_driver(&pdacf_cs_driver);
314 }
315 
316 module_init(init_pdacf);
317 module_exit(exit_pdacf);
318