286 lines
6.2 KiB
C
286 lines
6.2 KiB
C
/*
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* Copyright (c) 1998-2002 by Paul Davis <pbd@op.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <asm/io.h>
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#include <linux/init.h>
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#include <linux/time.h>
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#include <linux/wait.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <sound/core.h>
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#include <sound/snd_wavefront.h>
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#include <sound/initval.h>
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/* Control bits for the Load Control Register
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*/
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#define FX_LSB_TRANSFER 0x01 /* transfer after DSP LSB byte written */
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#define FX_MSB_TRANSFER 0x02 /* transfer after DSP MSB byte written */
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#define FX_AUTO_INCR 0x04 /* auto-increment DSP address after transfer */
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#define WAIT_IDLE 0xff
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static int
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wavefront_fx_idle (snd_wavefront_t *dev)
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{
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int i;
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unsigned int x = 0x80;
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for (i = 0; i < 1000; i++) {
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x = inb (dev->fx_status);
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if ((x & 0x80) == 0) {
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break;
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}
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}
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if (x & 0x80) {
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snd_printk ("FX device never idle.\n");
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return 0;
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}
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return (1);
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}
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static void
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wavefront_fx_mute (snd_wavefront_t *dev, int onoff)
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{
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if (!wavefront_fx_idle(dev)) {
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return;
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}
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outb (onoff ? 0x02 : 0x00, dev->fx_op);
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}
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static int
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wavefront_fx_memset (snd_wavefront_t *dev,
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int page,
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int addr,
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int cnt,
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unsigned short *data)
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{
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if (page < 0 || page > 7) {
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snd_printk ("FX memset: "
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"page must be >= 0 and <= 7\n");
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return -(EINVAL);
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}
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if (addr < 0 || addr > 0x7f) {
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snd_printk ("FX memset: "
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"addr must be >= 0 and <= 7f\n");
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return -(EINVAL);
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}
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if (cnt == 1) {
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outb (FX_LSB_TRANSFER, dev->fx_lcr);
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outb (page, dev->fx_dsp_page);
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outb (addr, dev->fx_dsp_addr);
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outb ((data[0] >> 8), dev->fx_dsp_msb);
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outb ((data[0] & 0xff), dev->fx_dsp_lsb);
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snd_printk ("FX: addr %d:%x set to 0x%x\n",
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page, addr, data[0]);
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} else {
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int i;
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outb (FX_AUTO_INCR|FX_LSB_TRANSFER, dev->fx_lcr);
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outb (page, dev->fx_dsp_page);
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outb (addr, dev->fx_dsp_addr);
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for (i = 0; i < cnt; i++) {
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outb ((data[i] >> 8), dev->fx_dsp_msb);
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outb ((data[i] & 0xff), dev->fx_dsp_lsb);
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if (!wavefront_fx_idle (dev)) {
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break;
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}
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}
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if (i != cnt) {
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snd_printk ("FX memset "
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"(0x%x, 0x%x, 0x%lx, %d) incomplete\n",
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page, addr, (unsigned long) data, cnt);
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return -(EIO);
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}
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}
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return 0;
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}
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int
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snd_wavefront_fx_detect (snd_wavefront_t *dev)
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{
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/* This is a crude check, but its the best one I have for now.
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Certainly on the Maui and the Tropez, wavefront_fx_idle() will
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report "never idle", which suggests that this test should
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work OK.
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*/
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if (inb (dev->fx_status) & 0x80) {
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snd_printk ("Hmm, probably a Maui or Tropez.\n");
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return -1;
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}
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return 0;
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}
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int
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snd_wavefront_fx_open (struct snd_hwdep *hw, struct file *file)
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{
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if (!try_module_get(hw->card->module))
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return -EFAULT;
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file->private_data = hw;
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return 0;
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}
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int
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snd_wavefront_fx_release (struct snd_hwdep *hw, struct file *file)
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{
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module_put(hw->card->module);
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return 0;
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}
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int
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snd_wavefront_fx_ioctl (struct snd_hwdep *sdev, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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struct snd_card *card;
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snd_wavefront_card_t *acard;
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snd_wavefront_t *dev;
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wavefront_fx_info r;
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unsigned short *page_data = NULL;
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unsigned short *pd;
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int err = 0;
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card = sdev->card;
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if (snd_BUG_ON(!card))
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return -ENODEV;
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if (snd_BUG_ON(!card->private_data))
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return -ENODEV;
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acard = card->private_data;
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dev = &acard->wavefront;
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if (copy_from_user (&r, (void __user *)arg, sizeof (wavefront_fx_info)))
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return -EFAULT;
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switch (r.request) {
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case WFFX_MUTE:
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wavefront_fx_mute (dev, r.data[0]);
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return -EIO;
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case WFFX_MEMSET:
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if (r.data[2] <= 0) {
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snd_printk ("cannot write "
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"<= 0 bytes to FX\n");
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return -EIO;
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} else if (r.data[2] == 1) {
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pd = (unsigned short *) &r.data[3];
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} else {
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if (r.data[2] > 256) {
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snd_printk ("cannot write "
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"> 512 bytes to FX\n");
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return -EIO;
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}
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page_data = memdup_user((unsigned char __user *)
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r.data[3],
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r.data[2] * sizeof(short));
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if (IS_ERR(page_data))
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return PTR_ERR(page_data);
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pd = page_data;
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}
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err = wavefront_fx_memset (dev,
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r.data[0], /* page */
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r.data[1], /* addr */
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r.data[2], /* cnt */
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pd);
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kfree(page_data);
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break;
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default:
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snd_printk ("FX: ioctl %d not yet supported\n",
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r.request);
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return -ENOTTY;
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}
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return err;
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}
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/* YSS225 initialization.
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This code was developed using DOSEMU. The Turtle Beach SETUPSND
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utility was run with I/O tracing in DOSEMU enabled, and a reconstruction
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of the port I/O done, using the Yamaha faxback document as a guide
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to add more logic to the code. Its really pretty weird.
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This is the approach of just dumping the whole I/O
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sequence as a series of port/value pairs and a simple loop
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that outputs it.
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*/
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int
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snd_wavefront_fx_start (snd_wavefront_t *dev)
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{
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unsigned int i;
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int err;
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const struct firmware *firmware = NULL;
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if (dev->fx_initialized)
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return 0;
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err = request_firmware(&firmware, "yamaha/yss225_registers.bin",
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dev->card->dev);
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if (err < 0) {
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err = -1;
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goto out;
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}
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for (i = 0; i + 1 < firmware->size; i += 2) {
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if (firmware->data[i] >= 8 && firmware->data[i] < 16) {
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outb(firmware->data[i + 1],
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dev->base + firmware->data[i]);
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} else if (firmware->data[i] == WAIT_IDLE) {
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if (!wavefront_fx_idle(dev)) {
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err = -1;
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goto out;
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}
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} else {
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snd_printk(KERN_ERR "invalid address"
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" in register data\n");
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err = -1;
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goto out;
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}
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}
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dev->fx_initialized = 1;
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err = 0;
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out:
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release_firmware(firmware);
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return err;
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}
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MODULE_FIRMWARE("yamaha/yss225_registers.bin");
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