drivers/sound/sound

/* */
This source file includes following definitions.
install_pnp_sounddrv
cs4232_pnp
pnp_activate
sound_pnp_init
sound_pnp_disconnect
   1 /*
   2  * sound/sound_pnp.c
   3  *
   4  * PnP soundcard support (Linux spesific)
   5  *
   6  * Copyright by Hannu Savolainen 1995
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are
  10  * met: 1. Redistributions of source code must retain the above copyright
  11  * notice, this list of conditions and the following disclaimer. 2.
  12  * Redistributions in binary form must reproduce the above copyright notice,
  13  * this list of conditions and the following disclaimer in the documentation
  14  * and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
  17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  22  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  23  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  */
  29 #include "sound_config.h"
  30 
  31 #if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_PNP)
  32 
  33 #include <linux/pnp.h>
  34 
  35 static struct pnp_sounddev *pnp_devs[20] =
  36 {
  37   NULL
  38 };
  39 
  40 static int      max_pnpdevs = 20;
  41 static int      nr_pnpdevs = 0;
  42 static int      pnp_sig = 0;
  43 
  44 void
  45 install_pnp_sounddrv (struct pnp_sounddev *drv)
     /*  */
  46 {
  47   if (nr_pnpdevs < max_pnpdevs)
  48     {
  49       pnp_devs[nr_pnpdevs++] = drv;
  50     }
  51   else
  52     printk ("Sound: More than 20 PnP drivers defined\n");
  53 }
  54 
  55 void
  56 cs4232_pnp (void *parm)
     /*  */
  57 {
  58   struct pnp_dev *dev = (struct pnp_dev *) parm;
  59   char           *name;
  60 
  61   int             portmask = 0x00, irqmask = 0x01, dmamask = 0x03;
  62   int             opl3_driver, wss_driver;
  63 
  64   printk ("CS4232 driver waking up\n");
  65 
  66   if (dev->card && dev->card->name)
  67     name = dev->card->name;
  68   else
  69     name = "PnP WSS";
  70 
  71   if ((wss_driver = sndtable_identify_card ("AD1848")))
  72     portmask |= 0x01;           /* MSS */
  73   else
  74     printk ("Sound: MSS/WSS device detected but no driver enabled\n");
  75 
  76   if ((opl3_driver = sndtable_identify_card ("OPL3")))
  77     portmask |= 0x02;           /* OPL3 */
  78   else
  79     printk ("Sound: OPL3/4 device detected but no driver enabled\n");
  80 
  81   printk ("WSS driver %d, OPL3 driver %d\n", wss_driver, opl3_driver);
  82 
  83   if (!portmask)                /* No drivers available */
  84     return;
  85 
  86   if (!pnp_allocate_device (pnp_sig, dev, portmask, irqmask, dmamask, 0x00))
  87     printk ("Device activation failed\n");
  88   else
  89     {
  90       struct address_info hw_config;
  91       int             wss_base, opl3_base;
  92       int             irq;
  93       int             dma1, dma2;
  94 
  95       printk ("Device activation OK\n");
  96       wss_base = pnp_get_port (dev, 0);
  97       opl3_base = pnp_get_port (dev, 1);
  98       irq = pnp_get_irq (dev, 0);
  99       dma1 = pnp_get_dma (dev, 0);
 100       dma2 = pnp_get_dma (dev, 1);
 101 
 102       printk ("I/O0 %03x\n", wss_base);
 103       printk ("I/O1 %03x\n", opl3_base);
 104       printk ("IRQ %d\n", irq);
 105       printk ("DMA0 %d\n", dma1);
 106       printk ("DMA1 %d\n", dma2);
 107 
 108       if (opl3_base && opl3_driver)
 109         {
 110           hw_config.io_base = opl3_base;
 111           hw_config.irq = 0;
 112           hw_config.dma = -1;
 113           hw_config.dma2 = -1;
 114           hw_config.always_detect = 0;
 115           hw_config.name = "";
 116           hw_config.driver_use_1 = 0;
 117           hw_config.driver_use_2 = 0;
 118           hw_config.osp = NULL;
 119 
 120           if (sndtable_probe (opl3_driver, &hw_config))
 121             sndtable_init_card (opl3_driver, &hw_config);
 122 
 123         }
 124 
 125       if (wss_base && wss_driver)
 126         {
 127           hw_config.io_base = wss_base;
 128           hw_config.irq = irq;
 129           hw_config.dma = dma1;
 130           hw_config.dma2 = (dma2 == NO_DMA) ? dma1 : dma2;
 131           hw_config.always_detect = 0;
 132           hw_config.name = name;
 133           hw_config.driver_use_1 = 0;
 134           hw_config.driver_use_2 = 0;
 135           hw_config.osp = NULL;
 136 
 137           if (sndtable_probe (wss_driver, &hw_config))
 138             sndtable_init_card (wss_driver, &hw_config);
 139 
 140         }
 141     }
 142 }
 143 
 144 static int
 145 pnp_activate (int id, struct pnp_dev *dev)
     /*  */
 146 {
 147   int             i;
 148 
 149   for (i = 0; i < nr_pnpdevs; i++)
 150     if (pnp_devs[i]->id == id)
 151       {
 152 
 153         printk ("PnP dev: %08x, %s\n", id,
 154                 pnp_devid2asc (id));
 155 
 156         pnp_devs[i]->setup ((void *) dev);
 157         return 1;
 158       }
 159 
 160   return 0;
 161 }
 162 
 163 void
 164 sound_pnp_init (void)
     /*  */
 165 {
 166   static struct pnp_sounddev cs4232_dev =
 167   {PNP_DEVID ('C', 'S', 'C', 0x0000), cs4232_pnp, "CS4232"};
 168 
 169   struct pnp_dev *dev;
 170 
 171   install_pnp_sounddrv (&cs4232_dev);
 172 
 173   dev = NULL;
 174 
 175   if ((pnp_sig = pnp_connect ("sound")) == -1)
 176     {
 177       printk ("Sound: Can't connect to kernel PnP services.\n");
 178       return;
 179     }
 180 
 181   while ((dev = pnp_get_next_device (pnp_sig, dev)) != NULL)
 182     {
 183       if (!pnp_activate (dev->key, dev))
 184         {
 185           /* Scan all compatible devices */
 186 
 187           int             i;
 188 
 189           for (i = 0; i < dev->ncompat; i++)
 190             if (pnp_activate (dev->compat_keys[i], dev))
 191               break;
 192         }
 193     }
 194 }
 195 
 196 void
 197 sound_pnp_disconnect (void)
     /*  */
 198 {
 199   pnp_disconnect (pnp_sig);
 200 }
 201 #endif
/* */
root/drivers/sound/sound_pnp.c

DEFINITIONS
