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/slab.h>
  24 #include <linux/firmware.h>
  25 #include <sound/core.h>
  26 #include <sound/snd_wavefront.h>
  27 #include <sound/initval.h>
  28
  29 /* Control bits for the Load Control Register
  30  */
  31
  32 #define FX_LSB_TRANSFER 0x01    /* transfer after DSP LSB byte written */
  33 #define FX_MSB_TRANSFER 0x02    /* transfer after DSP MSB byte written */
  34 #define FX_AUTO_INCR    0x04    /* auto-increment DSP address after transfer */
  35
  36 #define WAIT_IDLE       0xff
  37
  38 static int
  39 wavefront_fx_idle (snd_wavefront_t *dev)
  40
  41 {
  42         int i;
  43         unsigned int x = 0x80;
  44
  45         for (i = 0; i < 1000; i++) {
  46                 x = inb (dev->fx_status);
  47                 if ((x & 0x80) == 0) {
  48                         break;
  49                 }
  50         }
  51
  52         if (x & 0x80) {
  53                 snd_printk ("FX device never idle.\n");
  54                 return 0;
  55         }
  56
  57         return (1);
  58 }
  59
  60 static void
  61 wavefront_fx_mute (snd_wavefront_t *dev, int onoff)
  62
  63 {
  64         if (!wavefront_fx_idle(dev)) {
  65                 return;
  66         }
  67
  68         outb (onoff ? 0x02 : 0x00, dev->fx_op);
  69 }
  70
  71 static int
  72 wavefront_fx_memset (snd_wavefront_t *dev,
  73                      int page,
  74                      int addr,
  75                      int cnt,
  76                      unsigned short *data)
  77 {
  78         if (page < 0 || page > 7) {
  79                 snd_printk ("FX memset: "
  80                         "page must be >= 0 and <= 7\n");
  81                 return -(EINVAL);
  82         }
  83
  84         if (addr < 0 || addr > 0x7f) {
  85                 snd_printk ("FX memset: "
  86                         "addr must be >= 0 and <= 7f\n");
  87                 return -(EINVAL);
  88         }
  89
  90         if (cnt == 1) {
  91
  92                 outb (FX_LSB_TRANSFER, dev->fx_lcr);
  93                 outb (page, dev->fx_dsp_page);
  94                 outb (addr, dev->fx_dsp_addr);
  95                 outb ((data[0] >> 8), dev->fx_dsp_msb);
  96                 outb ((data[0] & 0xff), dev->fx_dsp_lsb);
  97
  98                 snd_printk ("FX: addr %d:%x set to 0x%x\n",
  99                         page, addr, data[0]);
 100
 101         } else {
 102                 int i;
 103
 104                 outb (FX_AUTO_INCR|FX_LSB_TRANSFER, dev->fx_lcr);
 105                 outb (page, dev->fx_dsp_page);
 106                 outb (addr, dev->fx_dsp_addr);
 107
 108                 for (i = 0; i < cnt; i++) {
 109                         outb ((data[i] >> 8), dev->fx_dsp_msb);
 110                         outb ((data[i] & 0xff), dev->fx_dsp_lsb);
 111                         if (!wavefront_fx_idle (dev)) {
 112                                 break;
 113                         }
 114                 }
 115
 116                 if (i != cnt) {
 117                         snd_printk ("FX memset "
 118                                     "(0x%x, 0x%x, 0x%lx, %d) incomplete\n",
 119                                     page, addr, (unsigned long) data, cnt);
 120                         return -(EIO);
 121                 }
 122         }
 123
 124         return 0;
 125 }
 126
 127 int
 128 snd_wavefront_fx_detect (snd_wavefront_t *dev)
 129
 130 {
 131         /* This is a crude check, but its the best one I have for now.
 132            Certainly on the Maui and the Tropez, wavefront_fx_idle() will
 133            report "never idle", which suggests that this test should
 134            work OK.
 135         */
 136
 137         if (inb (dev->fx_status) & 0x80) {
 138                 snd_printk ("Hmm, probably a Maui or Tropez.\n");
 139                 return -1;
 140         }
 141
 142         return 0;
 143 }
 144
 145 int
 146 snd_wavefront_fx_open (struct snd_hwdep *hw, struct file *file)
 147
 148 {
 149         if (!try_module_get(hw->card->module))
 150                 return -EFAULT;
 151         file->private_data = hw;
 152         return 0;
 153 }
 154
 155 int
 156 snd_wavefront_fx_release (struct snd_hwdep *hw, struct file *file)
 157
 158 {
 159         module_put(hw->card->module);
 160         return 0;
 161 }
 162
 163 int
 164 snd_wavefront_fx_ioctl (struct snd_hwdep *sdev, struct file *file,
 165                         unsigned int cmd, unsigned long arg)
 166
 167 {
 168         struct snd_card *card;
 169         snd_wavefront_card_t *acard;
 170         snd_wavefront_t *dev;
 171         wavefront_fx_info r;
 172         unsigned short *page_data = NULL;
 173         unsigned short *pd;
 174         int err = 0;
 175
 176         card = sdev->card;
 177         if (snd_BUG_ON(!card))
 178                 return -ENODEV;
 179         if (snd_BUG_ON(!card->private_data))
 180                 return -ENODEV;
 181
 182         acard = card->private_data;
 183         dev = &acard->wavefront;
 184
 185         if (copy_from_user (&r, (void __user *)arg, sizeof (wavefront_fx_info)))
 186                 return -EFAULT;
 187
 188         switch (r.request) {
 189         case WFFX_MUTE:
 190                 wavefront_fx_mute (dev, r.data[0]);
 191                 return -EIO;
 192
 193         case WFFX_MEMSET:
 194                 if (r.data[2] <= 0) {
 195                         snd_printk ("cannot write "
 196                                 "<= 0 bytes to FX\n");
 197                         return -EIO;
 198                 } else if (r.data[2] == 1) {
 199                         pd = (unsigned short *) &r.data[3];
 200                 } else {
 201                         if (r.data[2] > 256) {
 202                                 snd_printk ("cannot write "
 203                                             "> 512 bytes to FX\n");
 204                                 return -EIO;
 205                         }
 206                         page_data = memdup_user((unsigned char __user *)
 207                                                 r.data[3],
 208                                                 r.data[2] * sizeof(short));
 209                         if (IS_ERR(page_data))
 210                                 return PTR_ERR(page_data);
 211                         pd = page_data;
 212                 }
 213
 214                 err = wavefront_fx_memset (dev,
 215                              r.data[0], /* page */
 216                              r.data[1], /* addr */
 217                              r.data[2], /* cnt */
 218                              pd);
 219                 kfree(page_data);
 220                 break;
 221
 222         default:
 223                 snd_printk ("FX: ioctl %d not yet supported\n",
 224                             r.request);
 225                 return -ENOTTY;
 226         }
 227         return err;
 228 }
 229
 230 /* YSS225 initialization.
 231
 232    This code was developed using DOSEMU. The Turtle Beach SETUPSND
 233    utility was run with I/O tracing in DOSEMU enabled, and a reconstruction
 234    of the port I/O done, using the Yamaha faxback document as a guide
 235    to add more logic to the code. Its really pretty weird.
 236
 237    This is the approach of just dumping the whole I/O
 238    sequence as a series of port/value pairs and a simple loop
 239    that outputs it.
 240 */
 241
 242 int __devinit
 243 snd_wavefront_fx_start (snd_wavefront_t *dev)
 244 {
 245         unsigned int i;
 246         int err;
 247         const struct firmware *firmware = NULL;
 248
 249         if (dev->fx_initialized)
 250                 return 0;
 251
 252         err = request_firmware(&firmware, "yamaha/yss225_registers.bin",
 253                                dev->card->dev);
 254         if (err < 0) {
 255                 err = -1;
 256                 goto out;
 257         }
 258
 259         for (i = 0; i + 1 < firmware->size; i += 2) {
 260                 if (firmware->data[i] >= 8 && firmware->data[i] < 16) {
 261                         outb(firmware->data[i + 1],
 262                              dev->base + firmware->data[i]);
 263                 } else if (firmware->data[i] == WAIT_IDLE) {
 264                         if (!wavefront_fx_idle(dev)) {
 265                                 err = -1;
 266                                 goto out;
 267                         }
 268                 } else {
 269                         snd_printk(KERN_ERR "invalid address"
 270                                    " in register data\n");
 271                         err = -1;
 272                         goto out;
 273                 }
 274         }
 275
 276         dev->fx_initialized = 1;
 277         err = 0;
 278
 279 out:
 280         release_firmware(firmware);
 281         return err;
 282 }
 283
 284 MODULE_FIRMWARE("yamaha/yss225_registers.bin");