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