kernel/2.6.29.6-aldebaran-rt/sound/isa/wavefront/wavefront_fx.c

   1 /*
   2  *  Copyright (c) 1998-2002 by Paul Davis <pbd@op.net>
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  */
  18
  19 #include <asm/io.h>
  20 #include <linux/init.h>
  21 #include <linux/time.h>
  22 #include <linux/wait.h>
  23 #include <linux/firmware.h>
  24 #include <sound/core.h>
  25 #include <sound/snd_wavefront.h>
  26 #include <sound/initval.h>
  27
  28 /* Control bits for the Load Control Register
  29  */
  30
  31 #define FX_LSB_TRANSFER 0x01    /* transfer after DSP LSB byte written */
  32 #define FX_MSB_TRANSFER 0x02    /* transfer after DSP MSB byte written */
  33 #define FX_AUTO_INCR    0x04    /* auto-increment DSP address after transfer */
  34
  35 #define WAIT_IDLE       0xff
  36
  37 #ifdef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
  38 #include "yss225.c"
  39 static const struct firmware yss225_registers_firmware = {
  40         .data = (u8 *)yss225_registers,
  41         .size = sizeof yss225_registers
  42 };
  43 #endif
  44
  45 static int
  46 wavefront_fx_idle (snd_wavefront_t *dev)
  47
  48 {
  49         int i;
  50         unsigned int x = 0x80;
  51
  52         for (i = 0; i < 1000; i++) {
  53                 x = inb (dev->fx_status);
  54                 if ((x & 0x80) == 0) {
  55                         break;
  56                 }
  57         }
  58
  59         if (x & 0x80) {
  60                 snd_printk ("FX device never idle.\n");
  61                 return 0;
  62         }
  63
  64         return (1);
  65 }
  66
  67 static void
  68 wavefront_fx_mute (snd_wavefront_t *dev, int onoff)
  69
  70 {
  71         if (!wavefront_fx_idle(dev)) {
  72                 return;
  73         }
  74
  75         outb (onoff ? 0x02 : 0x00, dev->fx_op);
  76 }
  77
  78 static int
  79 wavefront_fx_memset (snd_wavefront_t *dev,
  80                      int page,
  81                      int addr,
  82                      int cnt,
  83                      unsigned short *data)
  84 {
  85         if (page < 0 || page > 7) {
  86                 snd_printk ("FX memset: "
  87                         "page must be >= 0 and <= 7\n");
  88                 return -(EINVAL);
  89         }
  90
  91         if (addr < 0 || addr > 0x7f) {
  92                 snd_printk ("FX memset: "
  93                         "addr must be >= 0 and <= 7f\n");
  94                 return -(EINVAL);
  95         }
  96
  97         if (cnt == 1) {
  98
  99                 outb (FX_LSB_TRANSFER, dev->fx_lcr);
 100                 outb (page, dev->fx_dsp_page);
 101                 outb (addr, dev->fx_dsp_addr);
 102                 outb ((data[0] >> 8), dev->fx_dsp_msb);
 103                 outb ((data[0] & 0xff), dev->fx_dsp_lsb);
 104
 105                 snd_printk ("FX: addr %d:%x set to 0x%x\n",
 106                         page, addr, data[0]);
 107
 108         } else {
 109                 int i;
 110
 111                 outb (FX_AUTO_INCR|FX_LSB_TRANSFER, dev->fx_lcr);
 112                 outb (page, dev->fx_dsp_page);
 113                 outb (addr, dev->fx_dsp_addr);
 114
 115                 for (i = 0; i < cnt; i++) {
 116                         outb ((data[i] >> 8), dev->fx_dsp_msb);
 117                         outb ((data[i] & 0xff), dev->fx_dsp_lsb);
 118                         if (!wavefront_fx_idle (dev)) {
 119                                 break;
 120                         }
 121                 }
 122
 123                 if (i != cnt) {
 124                         snd_printk ("FX memset "
 125                                     "(0x%x, 0x%x, 0x%lx, %d) incomplete\n",
 126                                     page, addr, (unsigned long) data, cnt);
 127                         return -(EIO);
 128                 }
 129         }
 130
 131         return 0;
 132 }
 133
 134 int
 135 snd_wavefront_fx_detect (snd_wavefront_t *dev)
 136
 137 {
 138         /* This is a crude check, but its the best one I have for now.
 139            Certainly on the Maui and the Tropez, wavefront_fx_idle() will
 140            report "never idle", which suggests that this test should
 141            work OK.
 142         */
 143
 144         if (inb (dev->fx_status) & 0x80) {
 145                 snd_printk ("Hmm, probably a Maui or Tropez.\n");
 146                 return -1;
 147         }
 148
 149         return 0;
 150 }
 151
 152 int
 153 snd_wavefront_fx_open (struct snd_hwdep *hw, struct file *file)
 154
 155 {
 156         if (!try_module_get(hw->card->module))
 157                 return -EFAULT;
 158         file->private_data = hw;
 159         return 0;
 160 }
 161
 162 int
 163 snd_wavefront_fx_release (struct snd_hwdep *hw, struct file *file)
 164
 165 {
 166         module_put(hw->card->module);
 167         return 0;
 168 }
 169
 170 int
 171 snd_wavefront_fx_ioctl (struct snd_hwdep *sdev, struct file *file,
 172                         unsigned int cmd, unsigned long arg)
 173
 174 {
 175         struct snd_card *card;
 176         snd_wavefront_card_t *acard;
 177         snd_wavefront_t *dev;
 178         wavefront_fx_info r;
 179         unsigned short *page_data = NULL;
 180         unsigned short *pd;
 181         int err = 0;
 182
 183         card = sdev->card;
 184         if (snd_BUG_ON(!card))
 185                 return -ENODEV;
 186         if (snd_BUG_ON(!card->private_data))
 187                 return -ENODEV;
 188
 189         acard = card->private_data;
 190         dev = &acard->wavefront;
 191
 192         if (copy_from_user (&r, (void __user *)arg, sizeof (wavefront_fx_info)))
 193                 return -EFAULT;
 194
 195         switch (r.request) {
 196         case WFFX_MUTE:
 197                 wavefront_fx_mute (dev, r.data[0]);
 198                 return -EIO;
 199
 200         case WFFX_MEMSET:
 201                 if (r.data[2] <= 0) {
 202                         snd_printk ("cannot write "
 203                                 "<= 0 bytes to FX\n");
 204                         return -EIO;
 205                 } else if (r.data[2] == 1) {
 206                         pd = (unsigned short *) &r.data[3];
 207                 } else {
 208                         if (r.data[2] > 256) {
 209                                 snd_printk ("cannot write "
 210                                             "> 512 bytes to FX\n");
 211                                 return -EIO;
 212                         }
 213                         page_data = kmalloc(r.data[2] * sizeof(short), GFP_KERNEL);
 214                         if (!page_data)
 215                                 return -ENOMEM;
 216                         if (copy_from_user (page_data,
 217                                             (unsigned char __user *) r.data[3],
 218                                             r.data[2] * sizeof(short))) {
 219                                 kfree(page_data);
 220                                 return -EFAULT;
 221                         }
 222                         pd = page_data;
 223                 }
 224
 225                 err = wavefront_fx_memset (dev,
 226                              r.data[0], /* page */
 227                              r.data[1], /* addr */
 228                              r.data[2], /* cnt */
 229                              pd);
 230                 kfree(page_data);
 231                 break;
 232
 233         default:
 234                 snd_printk ("FX: ioctl %d not yet supported\n",
 235                             r.request);
 236                 return -ENOTTY;
 237         }
 238         return err;
 239 }
 240
 241 /* YSS225 initialization.
 242
 243    This code was developed using DOSEMU. The Turtle Beach SETUPSND
 244    utility was run with I/O tracing in DOSEMU enabled, and a reconstruction
 245    of the port I/O done, using the Yamaha faxback document as a guide
 246    to add more logic to the code. Its really pretty weird.
 247
 248    This is the approach of just dumping the whole I/O
 249    sequence as a series of port/value pairs and a simple loop
 250    that outputs it.
 251 */
 252
 253 int __devinit
 254 snd_wavefront_fx_start (snd_wavefront_t *dev)
 255 {
 256         unsigned int i;
 257         int err;
 258         const struct firmware *firmware = NULL;
 259
 260         if (dev->fx_initialized)
 261                 return 0;
 262
 263 #ifdef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
 264         firmware = &yss225_registers_firmware;
 265 #else
 266         err = request_firmware(&firmware, "yamaha/yss225_registers.bin",
 267                                dev->card->dev);
 268         if (err < 0) {
 269                 err = -1;
 270                 goto out;
 271         }
 272 #endif
 273
 274         for (i = 0; i + 1 < firmware->size; i += 2) {
 275                 if (firmware->data[i] >= 8 && firmware->data[i] < 16) {
 276                         outb(firmware->data[i + 1],
 277                              dev->base + firmware->data[i]);
 278                 } else if (firmware->data[i] == WAIT_IDLE) {
 279                         if (!wavefront_fx_idle(dev)) {
 280                                 err = -1;
 281                                 goto out;
 282                         }
 283                 } else {
 284                         snd_printk(KERN_ERR "invalid address"
 285                                    " in register data\n");
 286                         err = -1;
 287                         goto out;
 288                 }
 289         }
 290
 291         dev->fx_initialized = 1;
 292         err = 0;
 293
 294 out:
 295 #ifndef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
 296         release_firmware(firmware);
 297 #endif
 298         return err;
 299 }
 300
 301 #ifndef CONFIG_SND_WAVEFRONT_FIRMWARE_IN_KERNEL
 302 MODULE_FIRMWARE("yamaha/yss225_registers.bin");
 303 #endif