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 MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
  26
  27 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  28 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  29 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable switches */
  30
  31 module_param_array(index, int, NULL, 0444);
  32 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  33 module_param_array(id, charp, NULL, 0444);
  34 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  35 module_param_array(enable, bool, NULL, 0444);
  36 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  37
  38 /*
  39  */
  40
  41 static struct snd_card *card_list[SNDRV_CARDS];
  42
  43 /*
  44  * prototypes
  45  */
  46 static int pdacf_config(struct pcmcia_device *link);
  47 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
  48
  49 static void pdacf_release(struct pcmcia_device *link)
  50 {
  51         free_irq(link->irq, link->priv);
  52         pcmcia_disable_device(link);
  53 }
  54
  55 /*
  56  * destructor
  57  */
  58 static int snd_pdacf_free(struct snd_pdacf *pdacf)
  59 {
  60         struct pcmcia_device *link = pdacf->p_dev;
  61
  62         pdacf_release(link);
  63
  64         card_list[pdacf->index] = NULL;
  65         pdacf->card = NULL;
  66
  67         kfree(pdacf);
  68         return 0;
  69 }
  70
  71 static int snd_pdacf_dev_free(struct snd_device *device)
  72 {
  73         struct snd_pdacf *chip = device->device_data;
  74         return snd_pdacf_free(chip);
  75 }
  76
  77 /*
  78  * snd_pdacf_attach - attach callback for cs
  79  */
  80 static int snd_pdacf_probe(struct pcmcia_device *link)
  81 {
  82         int i, err;
  83         struct snd_pdacf *pdacf;
  84         struct snd_card *card;
  85         static struct snd_device_ops ops = {
  86                 .dev_free =     snd_pdacf_dev_free,
  87         };
  88
  89         snd_printdd(KERN_DEBUG "pdacf_attach called\n");
  90         /* find an empty slot from the card list */
  91         for (i = 0; i < SNDRV_CARDS; i++) {
  92                 if (! card_list[i])
  93                         break;
  94         }
  95         if (i >= SNDRV_CARDS) {
  96                 snd_printk(KERN_ERR "pdacf: too many cards found\n");
  97                 return -EINVAL;
  98         }
  99         if (! enable[i])
 100                 return -ENODEV; /* disabled explicitly */
 101
 102         /* ok, create a card instance */
 103         err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
 104                            0, &card);
 105         if (err < 0) {
 106                 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
 107                 return err;
 108         }
 109
 110         pdacf = snd_pdacf_create(card);
 111         if (!pdacf) {
 112                 snd_card_free(card);
 113                 return -ENOMEM;
 114         }
 115
 116         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
 117         if (err < 0) {
 118                 kfree(pdacf);
 119                 snd_card_free(card);
 120                 return err;
 121         }
 122
 123         pdacf->index = i;
 124         card_list[i] = card;
 125
 126         pdacf->p_dev = link;
 127         link->priv = pdacf;
 128
 129         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 130         link->resource[0]->end = 16;
 131
 132         link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
 133         link->config_index = 1;
 134         link->config_regs = PRESENT_OPTION;
 135
 136         return pdacf_config(link);
 137 }
 138
 139
 140 /**
 141  * snd_pdacf_assign_resources - initialize the hardware and card instance.
 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         return 0;
 228
 229  failed:
 230         free_irq(link->irq, link->priv);
 231 failed_preirq:
 232         pcmcia_disable_device(link);
 233         return -ENODEV;
 234 }
 235
 236 #ifdef CONFIG_PM
 237
 238 static int pdacf_suspend(struct pcmcia_device *link)
 239 {
 240         struct snd_pdacf *chip = link->priv;
 241
 242         snd_printdd(KERN_DEBUG "SUSPEND\n");
 243         if (chip) {
 244                 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
 245                 snd_pdacf_suspend(chip);
 246         }
 247
 248         return 0;
 249 }
 250
 251 static int pdacf_resume(struct pcmcia_device *link)
 252 {
 253         struct snd_pdacf *chip = link->priv;
 254
 255         snd_printdd(KERN_DEBUG "RESUME\n");
 256         if (pcmcia_dev_present(link)) {
 257                 if (chip) {
 258                         snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
 259                         snd_pdacf_resume(chip);
 260                 }
 261         }
 262         snd_printdd(KERN_DEBUG "resume done!\n");
 263
 264         return 0;
 265 }
 266
 267 #endif
 268
 269 /*
 270  * Module entry points
 271  */
 272 static const struct pcmcia_device_id snd_pdacf_ids[] = {
 273         /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
 274         PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
 275         PCMCIA_DEVICE_NULL
 276 };
 277 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
 278
 279 static struct pcmcia_driver pdacf_cs_driver = {
 280         .owner          = THIS_MODULE,
 281         .name           = "snd-pdaudiocf",
 282         .probe          = snd_pdacf_probe,
 283         .remove         = snd_pdacf_detach,
 284         .id_table       = snd_pdacf_ids,
 285 #ifdef CONFIG_PM
 286         .suspend        = pdacf_suspend,
 287         .resume         = pdacf_resume,
 288 #endif
 289 };
 290 module_pcmcia_driver(pdacf_cs_driver);