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-rw-r--r--sound/isa/wavefront/wavefront_fx.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/sound/isa/wavefront/wavefront_fx.c b/sound/isa/wavefront/wavefront_fx.c
new file mode 100644
index 000000000..4c0b18cb4
--- /dev/null
+++ b/sound/isa/wavefront/wavefront_fx.c
@@ -0,0 +1,285 @@
+/*
+ * Copyright (c) 1998-2002 by Paul Davis <pbd@op.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <sound/core.h>
+#include <sound/snd_wavefront.h>
+#include <sound/initval.h>
+
+/* Control bits for the Load Control Register
+ */
+
+#define FX_LSB_TRANSFER 0x01 /* transfer after DSP LSB byte written */
+#define FX_MSB_TRANSFER 0x02 /* transfer after DSP MSB byte written */
+#define FX_AUTO_INCR 0x04 /* auto-increment DSP address after transfer */
+
+#define WAIT_IDLE 0xff
+
+static int
+wavefront_fx_idle (snd_wavefront_t *dev)
+
+{
+ int i;
+ unsigned int x = 0x80;
+
+ for (i = 0; i < 1000; i++) {
+ x = inb (dev->fx_status);
+ if ((x & 0x80) == 0) {
+ break;
+ }
+ }
+
+ if (x & 0x80) {
+ snd_printk ("FX device never idle.\n");
+ return 0;
+ }
+
+ return (1);
+}
+
+static void
+wavefront_fx_mute (snd_wavefront_t *dev, int onoff)
+
+{
+ if (!wavefront_fx_idle(dev)) {
+ return;
+ }
+
+ outb (onoff ? 0x02 : 0x00, dev->fx_op);
+}
+
+static int
+wavefront_fx_memset (snd_wavefront_t *dev,
+ int page,
+ int addr,
+ int cnt,
+ unsigned short *data)
+{
+ if (page < 0 || page > 7) {
+ snd_printk ("FX memset: "
+ "page must be >= 0 and <= 7\n");
+ return -EINVAL;
+ }
+
+ if (addr < 0 || addr > 0x7f) {
+ snd_printk ("FX memset: "
+ "addr must be >= 0 and <= 7f\n");
+ return -EINVAL;
+ }
+
+ if (cnt == 1) {
+
+ outb (FX_LSB_TRANSFER, dev->fx_lcr);
+ outb (page, dev->fx_dsp_page);
+ outb (addr, dev->fx_dsp_addr);
+ outb ((data[0] >> 8), dev->fx_dsp_msb);
+ outb ((data[0] & 0xff), dev->fx_dsp_lsb);
+
+ snd_printk ("FX: addr %d:%x set to 0x%x\n",
+ page, addr, data[0]);
+
+ } else {
+ int i;
+
+ outb (FX_AUTO_INCR|FX_LSB_TRANSFER, dev->fx_lcr);
+ outb (page, dev->fx_dsp_page);
+ outb (addr, dev->fx_dsp_addr);
+
+ for (i = 0; i < cnt; i++) {
+ outb ((data[i] >> 8), dev->fx_dsp_msb);
+ outb ((data[i] & 0xff), dev->fx_dsp_lsb);
+ if (!wavefront_fx_idle (dev)) {
+ break;
+ }
+ }
+
+ if (i != cnt) {
+ snd_printk ("FX memset "
+ "(0x%x, 0x%x, 0x%lx, %d) incomplete\n",
+ page, addr, (unsigned long) data, cnt);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+int
+snd_wavefront_fx_detect (snd_wavefront_t *dev)
+
+{
+ /* This is a crude check, but its the best one I have for now.
+ Certainly on the Maui and the Tropez, wavefront_fx_idle() will
+ report "never idle", which suggests that this test should
+ work OK.
+ */
+
+ if (inb (dev->fx_status) & 0x80) {
+ snd_printk ("Hmm, probably a Maui or Tropez.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+snd_wavefront_fx_open (struct snd_hwdep *hw, struct file *file)
+
+{
+ if (!try_module_get(hw->card->module))
+ return -EFAULT;
+ file->private_data = hw;
+ return 0;
+}
+
+int
+snd_wavefront_fx_release (struct snd_hwdep *hw, struct file *file)
+
+{
+ module_put(hw->card->module);
+ return 0;
+}
+
+int
+snd_wavefront_fx_ioctl (struct snd_hwdep *sdev, struct file *file,
+ unsigned int cmd, unsigned long arg)
+
+{
+ struct snd_card *card;
+ snd_wavefront_card_t *acard;
+ snd_wavefront_t *dev;
+ wavefront_fx_info r;
+ unsigned short *page_data = NULL;
+ unsigned short *pd;
+ int err = 0;
+
+ card = sdev->card;
+ if (snd_BUG_ON(!card))
+ return -ENODEV;
+ if (snd_BUG_ON(!card->private_data))
+ return -ENODEV;
+
+ acard = card->private_data;
+ dev = &acard->wavefront;
+
+ if (copy_from_user (&r, (void __user *)arg, sizeof (wavefront_fx_info)))
+ return -EFAULT;
+
+ switch (r.request) {
+ case WFFX_MUTE:
+ wavefront_fx_mute (dev, r.data[0]);
+ return -EIO;
+
+ case WFFX_MEMSET:
+ if (r.data[2] <= 0) {
+ snd_printk ("cannot write "
+ "<= 0 bytes to FX\n");
+ return -EIO;
+ } else if (r.data[2] == 1) {
+ pd = (unsigned short *) &r.data[3];
+ } else {
+ if (r.data[2] > 256) {
+ snd_printk ("cannot write "
+ "> 512 bytes to FX\n");
+ return -EIO;
+ }
+ page_data = memdup_user((unsigned char __user *)
+ r.data[3],
+ r.data[2] * sizeof(short));
+ if (IS_ERR(page_data))
+ return PTR_ERR(page_data);
+ pd = page_data;
+ }
+
+ err = wavefront_fx_memset (dev,
+ r.data[0], /* page */
+ r.data[1], /* addr */
+ r.data[2], /* cnt */
+ pd);
+ kfree(page_data);
+ break;
+
+ default:
+ snd_printk ("FX: ioctl %d not yet supported\n",
+ r.request);
+ return -ENOTTY;
+ }
+ return err;
+}
+
+/* YSS225 initialization.
+
+ This code was developed using DOSEMU. The Turtle Beach SETUPSND
+ utility was run with I/O tracing in DOSEMU enabled, and a reconstruction
+ of the port I/O done, using the Yamaha faxback document as a guide
+ to add more logic to the code. Its really pretty weird.
+
+ This is the approach of just dumping the whole I/O
+ sequence as a series of port/value pairs and a simple loop
+ that outputs it.
+*/
+
+int
+snd_wavefront_fx_start (snd_wavefront_t *dev)
+{
+ unsigned int i;
+ int err;
+ const struct firmware *firmware = NULL;
+
+ if (dev->fx_initialized)
+ return 0;
+
+ err = reject_firmware(&firmware, "/*(DEBLOBBED)*/",
+ dev->card->dev);
+ if (err < 0) {
+ err = -1;
+ goto out;
+ }
+
+ for (i = 0; i + 1 < firmware->size; i += 2) {
+ if (firmware->data[i] >= 8 && firmware->data[i] < 16) {
+ outb(firmware->data[i + 1],
+ dev->base + firmware->data[i]);
+ } else if (firmware->data[i] == WAIT_IDLE) {
+ if (!wavefront_fx_idle(dev)) {
+ err = -1;
+ goto out;
+ }
+ } else {
+ snd_printk(KERN_ERR "invalid address"
+ " in register data\n");
+ err = -1;
+ goto out;
+ }
+ }
+
+ dev->fx_initialized = 1;
+ err = 0;
+
+out:
+ release_firmware(firmware);
+ return err;
+}
+
+/*(DEBLOBBED)*/
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