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Linux/sound/pcmcia/pdaudiocf/pdaudiocf.c

  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         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_new(&link->dev, index[i], id[i], THIS_MODULE,
116                            0, &card);
117         if (err < 0) {
118                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
119                 return err;
120         }
121 
122         pdacf = snd_pdacf_create(card);
123         if (!pdacf) {
124                 snd_card_free(card);
125                 return -ENOMEM;
126         }
127 
128         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
129         if (err < 0) {
130                 kfree(pdacf);
131                 snd_card_free(card);
132                 return err;
133         }
134 
135         pdacf->index = i;
136         card_list[i] = card;
137 
138         pdacf->p_dev = link;
139         link->priv = pdacf;
140 
141         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
142         link->resource[0]->end = 16;
143 
144         link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
145         link->config_index = 1;
146         link->config_regs = PRESENT_OPTION;
147 
148         return pdacf_config(link);
149 }
150 
151 
152 /**
153  * snd_pdacf_assign_resources - initialize the hardware and card instance.
154  * @port: i/o port for the card
155  * @irq: irq number for the card
156  *
157  * this function assigns the specified port and irq, boot the card,
158  * create pcm and control instances, and initialize the rest hardware.
159  *
160  * returns 0 if successful, or a negative error code.
161  */
162 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
163 {
164         int err;
165         struct snd_card *card = pdacf->card;
166 
167         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
168         pdacf->port = port;
169         pdacf->irq = irq;
170         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
171 
172         err = snd_pdacf_ak4117_create(pdacf);
173         if (err < 0)
174                 return err;     
175 
176         strcpy(card->driver, "PDAudio-CF");
177         sprintf(card->shortname, "Core Sound %s", card->driver);
178         sprintf(card->longname, "%s at 0x%x, irq %i",
179                 card->shortname, port, irq);
180 
181         err = snd_pdacf_pcm_new(pdacf);
182         if (err < 0)
183                 return err;
184 
185         if ((err = snd_card_register(card)) < 0)
186                 return err;
187 
188         return 0;
189 }
190 
191 
192 /*
193  * snd_pdacf_detach - detach callback for cs
194  */
195 static void snd_pdacf_detach(struct pcmcia_device *link)
196 {
197         struct snd_pdacf *chip = link->priv;
198 
199         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
200 
201         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
202                 snd_pdacf_powerdown(chip);
203         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
204         snd_card_disconnect(chip->card);
205         snd_card_free_when_closed(chip->card);
206 }
207 
208 /*
209  * configuration callback
210  */
211 
212 static int pdacf_config(struct pcmcia_device *link)
213 {
214         struct snd_pdacf *pdacf = link->priv;
215         int ret;
216 
217         snd_printdd(KERN_DEBUG "pdacf_config called\n");
218         link->config_index = 0x5;
219         link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
220 
221         ret = pcmcia_request_io(link);
222         if (ret)
223                 goto failed;
224 
225         ret = pcmcia_request_irq(link, pdacf_interrupt);
226         if (ret)
227                 goto failed;
228 
229         ret = pcmcia_enable_device(link);
230         if (ret)
231                 goto failed;
232 
233         if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
234                                         link->irq) < 0)
235                 goto failed;
236 
237         return 0;
238 
239 failed:
240         pcmcia_disable_device(link);
241         return -ENODEV;
242 }
243 
244 #ifdef CONFIG_PM
245 
246 static int pdacf_suspend(struct pcmcia_device *link)
247 {
248         struct snd_pdacf *chip = link->priv;
249 
250         snd_printdd(KERN_DEBUG "SUSPEND\n");
251         if (chip) {
252                 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
253                 snd_pdacf_suspend(chip);
254         }
255 
256         return 0;
257 }
258 
259 static int pdacf_resume(struct pcmcia_device *link)
260 {
261         struct snd_pdacf *chip = link->priv;
262 
263         snd_printdd(KERN_DEBUG "RESUME\n");
264         if (pcmcia_dev_present(link)) {
265                 if (chip) {
266                         snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
267                         snd_pdacf_resume(chip);
268                 }
269         }
270         snd_printdd(KERN_DEBUG "resume done!\n");
271 
272         return 0;
273 }
274 
275 #endif
276 
277 /*
278  * Module entry points
279  */
280 static const struct pcmcia_device_id snd_pdacf_ids[] = {
281         /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
282         PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
283         PCMCIA_DEVICE_NULL
284 };
285 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
286 
287 static struct pcmcia_driver pdacf_cs_driver = {
288         .owner          = THIS_MODULE,
289         .name           = "snd-pdaudiocf",
290         .probe          = snd_pdacf_probe,
291         .remove         = snd_pdacf_detach,
292         .id_table       = snd_pdacf_ids,
293 #ifdef CONFIG_PM
294         .suspend        = pdacf_suspend,
295         .resume         = pdacf_resume,
296 #endif
297 };
298 module_pcmcia_driver(pdacf_cs_driver);
299 

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