sound/pcmcia/pdaudiocf/pdaudiocf.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Driver for Sound Core PDAudioCF soundcard
   4  *
   5  * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
   6  */
   7
   8 #include <sound/core.h>
   9 #include <linux/slab.h>
  10 #include <linux/module.h>
  11 #include <pcmcia/ciscode.h>
  12 #include <pcmcia/cisreg.h>
  13 #include "pdaudiocf.h"
  14 #include <sound/initval.h>
  15 #include <linux/init.h>
  16
  17 /*
  18  */
  19
  20 #define CARD_NAME       "PDAudio-CF"
  21
  22 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  23 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
  24 MODULE_LICENSE("GPL");
  25
  26 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  27 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  28 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable switches */
  29
  30 module_param_array(index, int, NULL, 0444);
  31 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  32 module_param_array(id, charp, NULL, 0444);
  33 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  34 module_param_array(enable, bool, NULL, 0444);
  35 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  36
  37 /*
  38  */
  39
  40 static struct snd_card *card_list[SNDRV_CARDS];
  41
  42 /*
  43  * prototypes
  44  */
  45 static int pdacf_config(struct pcmcia_device *link);
  46 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
  47
  48 static void pdacf_release(struct pcmcia_device *link)
  49 {
  50         free_irq(link->irq, link->priv);
  51         pcmcia_disable_device(link);
  52 }
  53
  54 /*
  55  * destructor
  56  */
  57 static int snd_pdacf_free(struct snd_pdacf *pdacf)
  58 {
  59         struct pcmcia_device *link = pdacf->p_dev;
  60
  61         pdacf_release(link);
  62
  63         card_list[pdacf->index] = NULL;
  64         pdacf->card = NULL;
  65
  66         kfree(pdacf);
  67         return 0;
  68 }
  69
  70 static int snd_pdacf_dev_free(struct snd_device *device)
  71 {
  72         struct snd_pdacf *chip = device->device_data;
  73         return snd_pdacf_free(chip);
  74 }
  75
  76 /*
  77  * snd_pdacf_attach - attach callback for cs
  78  */
  79 static int snd_pdacf_probe(struct pcmcia_device *link)
  80 {
  81         int i, err;
  82         struct snd_pdacf *pdacf;
  83         struct snd_card *card;
  84         static const struct snd_device_ops ops = {
  85                 .dev_free =     snd_pdacf_dev_free,
  86         };
  87
  88         snd_printdd(KERN_DEBUG "pdacf_attach called\n");
  89         /* find an empty slot from the card list */
  90         for (i = 0; i < SNDRV_CARDS; i++) {
  91                 if (! card_list[i])
  92                         break;
  93         }
  94         if (i >= SNDRV_CARDS) {
  95                 snd_printk(KERN_ERR "pdacf: too many cards found\n");
  96                 return -EINVAL;
  97         }
  98         if (! enable[i])
  99                 return -ENODEV; /* disabled explicitly */
 100
 101         /* ok, create a card instance */
 102         err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
 103                            0, &card);
 104         if (err < 0) {
 105                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 106                 return err;
 107         }
 108
 109         pdacf = snd_pdacf_create(card);
 110         if (!pdacf) {
 111                 snd_card_free(card);
 112                 return -ENOMEM;
 113         }
 114
 115         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
 116         if (err < 0) {
 117                 kfree(pdacf);
 118                 snd_card_free(card);
 119                 return err;
 120         }
 121
 122         pdacf->index = i;
 123         card_list[i] = card;
 124
 125         pdacf->p_dev = link;
 126         link->priv = pdacf;
 127
 128         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 129         link->resource[0]->end = 16;
 130
 131         link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 132         link->config_index = 1;
 133         link->config_regs = PRESENT_OPTION;
 134
 135         return pdacf_config(link);
 136 }
 137
 138
 139 /**
 140  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 141  * @pdacf: context
 142  * @port: i/o port for the card
 143  * @irq: irq number for the card
 144  *
 145  * this function assigns the specified port and irq, boot the card,
 146  * create pcm and control instances, and initialize the rest hardware.
 147  *
 148  * returns 0 if successful, or a negative error code.
 149  */
 150 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
 151 {
 152         int err;
 153         struct snd_card *card = pdacf->card;
 154
 155         snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
 156         pdacf->port = port;
 157         pdacf->irq = irq;
 158         pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
 159
 160         err = snd_pdacf_ak4117_create(pdacf);
 161         if (err < 0)
 162                 return err;
 163
 164         strcpy(card->driver, "PDAudio-CF");
 165         sprintf(card->shortname, "Core Sound %s", card->driver);
 166         sprintf(card->longname, "%s at 0x%x, irq %i",
 167                 card->shortname, port, irq);
 168
 169         err = snd_pdacf_pcm_new(pdacf);
 170         if (err < 0)
 171                 return err;
 172
 173         if ((err = snd_card_register(card)) < 0)
 174                 return err;
 175
 176         return 0;
 177 }
 178
 179
 180 /*
 181  * snd_pdacf_detach - detach callback for cs
 182  */
 183 static void snd_pdacf_detach(struct pcmcia_device *link)
 184 {
 185         struct snd_pdacf *chip = link->priv;
 186
 187         snd_printdd(KERN_DEBUG "pdacf_detach called\n");
 188
 189         if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
 190                 snd_pdacf_powerdown(chip);
 191         chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
 192         snd_card_disconnect(chip->card);
 193         snd_card_free_when_closed(chip->card);
 194 }
 195
 196 /*
 197  * configuration callback
 198  */
 199
 200 static int pdacf_config(struct pcmcia_device *link)
 201 {
 202         struct snd_pdacf *pdacf = link->priv;
 203         int ret;
 204
 205         snd_printdd(KERN_DEBUG "pdacf_config called\n");
 206         link->config_index = 0x5;
 207         link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 208
 209         ret = pcmcia_request_io(link);
 210         if (ret)
 211                 goto failed_preirq;
 212
 213         ret = request_threaded_irq(link->irq, pdacf_interrupt,
 214                                    pdacf_threaded_irq,
 215                                    IRQF_SHARED, link->devname, link->priv);
 216         if (ret)
 217                 goto failed_preirq;
 218
 219         ret = pcmcia_enable_device(link);
 220         if (ret)
 221                 goto failed;
 222
 223         if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
 224                                         link->irq) < 0)
 225                 goto failed;
 226
 227         pdacf->card->sync_irq = link->irq;
 228         return 0;
 229
 230  failed:
 231         free_irq(link->irq, link->priv);
 232 failed_preirq:
 233         pcmcia_disable_device(link);
 234         return -ENODEV;
 235 }
 236
 237 #ifdef CONFIG_PM
 238
 239 static int pdacf_suspend(struct pcmcia_device *link)
 240 {
 241         struct snd_pdacf *chip = link->priv;
 242
 243         snd_printdd(KERN_DEBUG "SUSPEND\n");
 244         if (chip) {
 245                 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 246                 snd_pdacf_suspend(chip);
 247         }
 248
 249         return 0;
 250 }
 251
 252 static int pdacf_resume(struct pcmcia_device *link)
 253 {
 254         struct snd_pdacf *chip = link->priv;
 255
 256         snd_printdd(KERN_DEBUG "RESUME\n");
 257         if (pcmcia_dev_present(link)) {
 258                 if (chip) {
 259                         snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 260                         snd_pdacf_resume(chip);
 261                 }
 262         }
 263         snd_printdd(KERN_DEBUG "resume done!\n");
 264
 265         return 0;
 266 }
 267
 268 #endif
 269
 270 /*
 271  * Module entry points
 272  */
 273 static const struct pcmcia_device_id snd_pdacf_ids[] = {
 274         /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
 275         PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
 276         PCMCIA_DEVICE_NULL
 277 };
 278 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 279
 280 static struct pcmcia_driver pdacf_cs_driver = {
 281         .owner          = THIS_MODULE,
 282         .name           = "snd-pdaudiocf",
 283         .probe          = snd_pdacf_probe,
 284         .remove         = snd_pdacf_detach,
 285         .id_table       = snd_pdacf_ids,
 286 #ifdef CONFIG_PM
 287         .suspend        = pdacf_suspend,
 288         .resume         = pdacf_resume,
 289 #endif
 290 };
 291 module_pcmcia_driver(pdacf_cs_driver);