Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / sound / isa / wavefront / wavefront_fx.c
blob657e2d6c01ac55fcf56f047b71632139304aad22
1 /*
2 * Copyright (c) 1998-2002 by Paul Davis <pbd@op.net>
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.
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.
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
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>
29 /* Control bits for the Load Control Register
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 */
36 #define WAIT_IDLE 0xff
38 static int
39 wavefront_fx_idle (snd_wavefront_t *dev)
42 int i;
43 unsigned int x = 0x80;
45 for (i = 0; i < 1000; i++) {
46 x = inb (dev->fx_status);
47 if ((x & 0x80) == 0) {
48 break;
52 if (x & 0x80) {
53 snd_printk ("FX device never idle.\n");
54 return 0;
57 return (1);
60 static void
61 wavefront_fx_mute (snd_wavefront_t *dev, int onoff)
64 if (!wavefront_fx_idle(dev)) {
65 return;
68 outb (onoff ? 0x02 : 0x00, dev->fx_op);
71 static int
72 wavefront_fx_memset (snd_wavefront_t *dev,
73 int page,
74 int addr,
75 int cnt,
76 unsigned short *data)
78 if (page < 0 || page > 7) {
79 snd_printk ("FX memset: "
80 "page must be >= 0 and <= 7\n");
81 return -(EINVAL);
84 if (addr < 0 || addr > 0x7f) {
85 snd_printk ("FX memset: "
86 "addr must be >= 0 and <= 7f\n");
87 return -(EINVAL);
90 if (cnt == 1) {
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);
98 snd_printk ("FX: addr %d:%x set to 0x%x\n",
99 page, addr, data[0]);
101 } else {
102 int i;
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);
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;
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);
124 return 0;
128 snd_wavefront_fx_detect (snd_wavefront_t *dev)
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.
137 if (inb (dev->fx_status) & 0x80) {
138 snd_printk ("Hmm, probably a Maui or Tropez.\n");
139 return -1;
142 return 0;
146 snd_wavefront_fx_open (struct snd_hwdep *hw, struct file *file)
149 if (!try_module_get(hw->card->module))
150 return -EFAULT;
151 file->private_data = hw;
152 return 0;
155 int
156 snd_wavefront_fx_release (struct snd_hwdep *hw, struct file *file)
159 module_put(hw->card->module);
160 return 0;
164 snd_wavefront_fx_ioctl (struct snd_hwdep *sdev, struct file *file,
165 unsigned int cmd, unsigned long arg)
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;
176 card = sdev->card;
177 if (snd_BUG_ON(!card))
178 return -ENODEV;
179 if (snd_BUG_ON(!card->private_data))
180 return -ENODEV;
182 acard = card->private_data;
183 dev = &acard->wavefront;
185 if (copy_from_user (&r, (void __user *)arg, sizeof (wavefront_fx_info)))
186 return -EFAULT;
188 switch (r.request) {
189 case WFFX_MUTE:
190 wavefront_fx_mute (dev, r.data[0]);
191 return -EIO;
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;
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;
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;
222 default:
223 snd_printk ("FX: ioctl %d not yet supported\n",
224 r.request);
225 return -ENOTTY;
227 return err;
230 /* YSS225 initialization.
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.
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.
242 int __devinit
243 snd_wavefront_fx_start (snd_wavefront_t *dev)
245 unsigned int i;
246 int err;
247 const struct firmware *firmware = NULL;
249 if (dev->fx_initialized)
250 return 0;
252 err = request_firmware(&firmware, "yamaha/yss225_registers.bin",
253 dev->card->dev);
254 if (err < 0) {
255 err = -1;
256 goto out;
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;
268 } else {
269 snd_printk(KERN_ERR "invalid address"
270 " in register data\n");
271 err = -1;
272 goto out;
276 dev->fx_initialized = 1;
277 err = 0;
279 out:
280 release_firmware(firmware);
281 return err;
284 MODULE_FIRMWARE("yamaha/yss225_registers.bin");