summaryrefslogtreecommitdiff
path: root/sound/isa/wavefront/wavefront_fx.c
blob: 15331ed8819449b03864dcdebd062048f4f4954f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
/*
 *  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 <sound/driver.h>
#include <asm/io.h>
#include <linux/init.h>
#include <linux/time.h>
#include <linux/wait.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

#define FIRMWARE_IN_THE_KERNEL

#ifdef FIRMWARE_IN_THE_KERNEL
#include "yss225.c"
static const struct firmware yss225_registers_firmware = {
	.data = (u8 *)yss225_registers,
	.size = sizeof yss225_registers
};
#endif

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;

	snd_assert(sdev->card != NULL, return -ENODEV);
	
	card = sdev->card;

	snd_assert(card->private_data != NULL, 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 = kmalloc(r.data[2] * sizeof(short), GFP_KERNEL);
			if (!page_data)
				return -ENOMEM;
			if (copy_from_user (page_data,
					    (unsigned char __user *) r.data[3],
					    r.data[2] * sizeof(short))) {
				kfree(page_data);
				return -EFAULT;
			}
			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 __devinit
snd_wavefront_fx_start (snd_wavefront_t *dev)
{
	unsigned int i;
	int err;
	const struct firmware *firmware;

	if (dev->fx_initialized)
		return 0;

	err = request_firmware(&firmware, "yamaha/yss225_registers.bin",
			       dev->card->dev);
	if (err < 0) {
#ifdef FIRMWARE_IN_THE_KERNEL
		firmware = &yss225_registers_firmware;
#else
		err = -1;
		goto out;
#endif
	}

	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:
#ifdef FIRMWARE_IN_THE_KERNEL
	if (firmware != &yss225_registers_firmware)
#endif
		release_firmware(firmware);
	return err;
}