kernel/drivers/char/sound/es1370.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   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 3 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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20
  21 #include <config.h>
  22 #include <build.h>
  23
  24 #ifdef ARCH_i386
  25
  26 #include <system.h>
  27 #include <dev.h>
  28 #include <arch/io.h>
  29 #include <pci.h>
  30
  31 #define ES1370_VENDORID 0x1274
  32 #define ES1370_DEVICEID 0x5000
  33
  34 typedef struct {
  35         unsigned addr_io;
  36         int irq;
  37 } es1370_t;
  38
  39 int es1370_inb (es1370_t *dev, int port)
  40 {
  41         int value = -1;
  42
  43         if ((value = inb (dev->addr_io+port)) != 0)
  44                 DPRINT (DBG_DRIVER | DBG_SOUND, "es1370DSP: inb () failed - %d", value);
  45
  46         return value;
  47 }
  48
  49 void es1370_outb (es1370_t *dev, int port, int value)
  50 {
  51         int s;
  52
  53         outb (dev->addr_io+port, value);
  54 }
  55
  56 /* detect es1370 device in PC */
  57 pcidev_t *es1370_detect ()
  58 {
  59         /* First detect sound card - is connected to PCI bus ?*/
  60         pcidev_t *pcidev = pcidev_find (ES1370_VENDORID, ES1370_DEVICEID);
  61
  62         if (!pcidev)
  63                 return 0;
  64
  65         return pcidev;
  66 }
  67
  68 unsigned init_es1370 ()
  69 {
  70         pcidev_t *pcidev = es1370_detect ();
  71
  72         if (!pcidev)
  73                 return 0;
  74
  75         es1370_t *dev = (es1370_t *) kmalloc (sizeof (es1370_t));
  76
  77         if (!dev)
  78                 return 0;
  79
  80         /* get irq id */
  81         dev->irq = pcidev->u.h0.interrupt_line;
  82         dev->addr_io = pcidev->u.h0.base_registers[0];
  83
  84         kprintf ("es1370 -> found at 0x%x, irq: %d\n", dev->addr_io, dev->irq);
  85
  86         unsigned char *c = (unsigned char *) dev->addr_io;
  87
  88         //es1370_outb (dev, 0x0, 1);
  89
  90         //kprintf ("Prvni znak: 0x%x\n", c[0]);
  91
  92         return 1;
  93 }
  94
  95 bool es1370_acthandler (unsigned act, unsigned freq)
  96 {
  97         switch (act) {
  98                 case DEV_ACT_INIT:
  99                 {
 100                         //init_es1370 ();
 101
 102                         return 1;
 103                 }
 104                 break;
 105                 case DEV_ACT_STOP:
 106                 {
 107
 108
 109                         return 1;
 110                 }
 111                 break;
 112                 case DEV_ACT_WRITE:
 113                 {
 114
 115
 116                         return 1;
 117                 }
 118                 break;
 119         }
 120
 121         return 0;
 122 }
 123 #endif
 124