diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/isa/sscape.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'sound/isa/sscape.c')
-rw-r--r-- | sound/isa/sscape.c | 1517 |
1 files changed, 1517 insertions, 0 deletions
diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c new file mode 100644 index 00000000000..3959ed694ee --- /dev/null +++ b/sound/isa/sscape.c | |||
@@ -0,0 +1,1517 @@ | |||
1 | /* | ||
2 | * Low-level ALSA driver for the ENSONIQ SoundScape PnP | ||
3 | * Copyright (c) by Chris Rankin | ||
4 | * | ||
5 | * This driver was written in part using information obtained from | ||
6 | * the OSS/Free SoundScape driver, written by Hannu Savolainen. | ||
7 | * | ||
8 | * | ||
9 | * This program is free software; you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU General Public License as published by | ||
11 | * the Free Software Foundation; either version 2 of the License, or | ||
12 | * (at your option) any later version. | ||
13 | * | ||
14 | * This program is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
17 | * GNU General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License | ||
20 | * along with this program; if not, write to the Free Software | ||
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
22 | */ | ||
23 | |||
24 | #include <sound/driver.h> | ||
25 | #include <linux/init.h> | ||
26 | #include <linux/delay.h> | ||
27 | #include <linux/pnp.h> | ||
28 | #include <linux/spinlock.h> | ||
29 | #include <linux/moduleparam.h> | ||
30 | #include <asm/dma.h> | ||
31 | #include <sound/core.h> | ||
32 | #include <sound/hwdep.h> | ||
33 | #include <sound/cs4231.h> | ||
34 | #include <sound/mpu401.h> | ||
35 | #include <sound/initval.h> | ||
36 | |||
37 | #include <sound/sscape_ioctl.h> | ||
38 | |||
39 | |||
40 | MODULE_AUTHOR("Chris Rankin"); | ||
41 | MODULE_DESCRIPTION("ENSONIQ SoundScape PnP driver"); | ||
42 | MODULE_LICENSE("GPL"); | ||
43 | |||
44 | static int index[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IDX; | ||
45 | static char* id[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_STR; | ||
46 | static long port[SNDRV_CARDS] __devinitdata = { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_PORT }; | ||
47 | static int irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; | ||
48 | static int mpu_irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; | ||
49 | static int dma[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_DMA; | ||
50 | |||
51 | module_param_array(index, int, NULL, 0444); | ||
52 | MODULE_PARM_DESC(index, "Index number for SoundScape soundcard"); | ||
53 | |||
54 | module_param_array(id, charp, NULL, 0444); | ||
55 | MODULE_PARM_DESC(id, "Description for SoundScape card"); | ||
56 | |||
57 | module_param_array(port, long, NULL, 0444); | ||
58 | MODULE_PARM_DESC(port, "Port # for SoundScape driver."); | ||
59 | |||
60 | module_param_array(irq, int, NULL, 0444); | ||
61 | MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver."); | ||
62 | |||
63 | module_param_array(mpu_irq, int, NULL, 0444); | ||
64 | MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver."); | ||
65 | |||
66 | module_param_array(dma, int, NULL, 0444); | ||
67 | MODULE_PARM_DESC(dma, "DMA # for SoundScape driver."); | ||
68 | |||
69 | #ifdef CONFIG_PNP | ||
70 | static struct pnp_card_device_id sscape_pnpids[] = { | ||
71 | { .id = "ENS3081", .devs = { { "ENS0000" } } }, | ||
72 | { .id = "" } /* end */ | ||
73 | }; | ||
74 | |||
75 | MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids); | ||
76 | #endif | ||
77 | |||
78 | static snd_card_t *sscape_card[SNDRV_CARDS]; | ||
79 | |||
80 | |||
81 | #define MPU401_IO(i) ((i) + 0) | ||
82 | #define MIDI_DATA_IO(i) ((i) + 0) | ||
83 | #define MIDI_CTRL_IO(i) ((i) + 1) | ||
84 | #define HOST_CTRL_IO(i) ((i) + 2) | ||
85 | #define HOST_DATA_IO(i) ((i) + 3) | ||
86 | #define ODIE_ADDR_IO(i) ((i) + 4) | ||
87 | #define ODIE_DATA_IO(i) ((i) + 5) | ||
88 | #define CODEC_IO(i) ((i) + 8) | ||
89 | |||
90 | #define IC_ODIE 1 | ||
91 | #define IC_OPUS 2 | ||
92 | |||
93 | #define RX_READY 0x01 | ||
94 | #define TX_READY 0x02 | ||
95 | |||
96 | #define CMD_ACK 0x80 | ||
97 | #define CMD_SET_MIDI_VOL 0x84 | ||
98 | #define CMD_GET_MIDI_VOL 0x85 | ||
99 | #define CMD_XXX_MIDI_VOL 0x86 | ||
100 | #define CMD_SET_EXTMIDI 0x8a | ||
101 | #define CMD_GET_EXTMIDI 0x8b | ||
102 | #define CMD_SET_MT32 0x8c | ||
103 | #define CMD_GET_MT32 0x8d | ||
104 | |||
105 | enum GA_REG { | ||
106 | GA_INTSTAT_REG = 0, | ||
107 | GA_INTENA_REG, | ||
108 | GA_DMAA_REG, | ||
109 | GA_DMAB_REG, | ||
110 | GA_INTCFG_REG, | ||
111 | GA_DMACFG_REG, | ||
112 | GA_CDCFG_REG, | ||
113 | GA_SMCFGA_REG, | ||
114 | GA_SMCFGB_REG, | ||
115 | GA_HMCTL_REG | ||
116 | }; | ||
117 | |||
118 | #define DMA_8BIT 0x80 | ||
119 | |||
120 | |||
121 | #define AD1845_FREQ_SEL_MSB 0x16 | ||
122 | #define AD1845_FREQ_SEL_LSB 0x17 | ||
123 | |||
124 | struct soundscape { | ||
125 | spinlock_t lock; | ||
126 | unsigned io_base; | ||
127 | int codec_type; | ||
128 | int ic_type; | ||
129 | struct resource *io_res; | ||
130 | cs4231_t *chip; | ||
131 | mpu401_t *mpu; | ||
132 | snd_hwdep_t *hw; | ||
133 | |||
134 | /* | ||
135 | * The MIDI device won't work until we've loaded | ||
136 | * its firmware via a hardware-dependent device IOCTL | ||
137 | */ | ||
138 | spinlock_t fwlock; | ||
139 | int hw_in_use; | ||
140 | unsigned long midi_usage; | ||
141 | unsigned char midi_vol; | ||
142 | }; | ||
143 | |||
144 | #define INVALID_IRQ ((unsigned)-1) | ||
145 | |||
146 | |||
147 | static inline struct soundscape *get_card_soundscape(snd_card_t * c) | ||
148 | { | ||
149 | return (struct soundscape *) (c->private_data); | ||
150 | } | ||
151 | |||
152 | static inline struct soundscape *get_mpu401_soundscape(mpu401_t * mpu) | ||
153 | { | ||
154 | return (struct soundscape *) (mpu->private_data); | ||
155 | } | ||
156 | |||
157 | static inline struct soundscape *get_hwdep_soundscape(snd_hwdep_t * hw) | ||
158 | { | ||
159 | return (struct soundscape *) (hw->private_data); | ||
160 | } | ||
161 | |||
162 | |||
163 | /* | ||
164 | * Allocates some kernel memory that we can use for DMA. | ||
165 | * I think this means that the memory has to map to | ||
166 | * contiguous pages of physical memory. | ||
167 | */ | ||
168 | static struct snd_dma_buffer *get_dmabuf(struct snd_dma_buffer *buf, unsigned long size) | ||
169 | { | ||
170 | if (buf) { | ||
171 | if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), | ||
172 | size, buf) < 0) { | ||
173 | snd_printk(KERN_ERR "sscape: Failed to allocate %lu bytes for DMA\n", size); | ||
174 | return NULL; | ||
175 | } | ||
176 | } | ||
177 | |||
178 | return buf; | ||
179 | } | ||
180 | |||
181 | /* | ||
182 | * Release the DMA-able kernel memory ... | ||
183 | */ | ||
184 | static void free_dmabuf(struct snd_dma_buffer *buf) | ||
185 | { | ||
186 | if (buf && buf->area) | ||
187 | snd_dma_free_pages(buf); | ||
188 | } | ||
189 | |||
190 | |||
191 | /* | ||
192 | * This function writes to the SoundScape's control registers, | ||
193 | * but doesn't do any locking. It's up to the caller to do that. | ||
194 | * This is why this function is "unsafe" ... | ||
195 | */ | ||
196 | static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg, unsigned char val) | ||
197 | { | ||
198 | outb(reg, ODIE_ADDR_IO(io_base)); | ||
199 | outb(val, ODIE_DATA_IO(io_base)); | ||
200 | } | ||
201 | |||
202 | /* | ||
203 | * Write to the SoundScape's control registers, and do the | ||
204 | * necessary locking ... | ||
205 | */ | ||
206 | static void sscape_write(struct soundscape *s, enum GA_REG reg, unsigned char val) | ||
207 | { | ||
208 | unsigned long flags; | ||
209 | |||
210 | spin_lock_irqsave(&s->lock, flags); | ||
211 | sscape_write_unsafe(s->io_base, reg, val); | ||
212 | spin_unlock_irqrestore(&s->lock, flags); | ||
213 | } | ||
214 | |||
215 | /* | ||
216 | * Read from the SoundScape's control registers, but leave any | ||
217 | * locking to the caller. This is why the function is "unsafe" ... | ||
218 | */ | ||
219 | static inline unsigned char sscape_read_unsafe(unsigned io_base, enum GA_REG reg) | ||
220 | { | ||
221 | outb(reg, ODIE_ADDR_IO(io_base)); | ||
222 | return inb(ODIE_DATA_IO(io_base)); | ||
223 | } | ||
224 | |||
225 | /* | ||
226 | * Puts the SoundScape into "host" mode, as compared to "MIDI" mode | ||
227 | */ | ||
228 | static inline void set_host_mode_unsafe(unsigned io_base) | ||
229 | { | ||
230 | outb(0x0, HOST_CTRL_IO(io_base)); | ||
231 | } | ||
232 | |||
233 | /* | ||
234 | * Puts the SoundScape into "MIDI" mode, as compared to "host" mode | ||
235 | */ | ||
236 | static inline void set_midi_mode_unsafe(unsigned io_base) | ||
237 | { | ||
238 | outb(0x3, HOST_CTRL_IO(io_base)); | ||
239 | } | ||
240 | |||
241 | /* | ||
242 | * Read the SoundScape's host-mode control register, but leave | ||
243 | * any locking issues to the caller ... | ||
244 | */ | ||
245 | static inline int host_read_unsafe(unsigned io_base) | ||
246 | { | ||
247 | int data = -1; | ||
248 | if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0) { | ||
249 | data = inb(HOST_DATA_IO(io_base)); | ||
250 | } | ||
251 | |||
252 | return data; | ||
253 | } | ||
254 | |||
255 | /* | ||
256 | * Read the SoundScape's host-mode control register, performing | ||
257 | * a limited amount of busy-waiting if the register isn't ready. | ||
258 | * Also leaves all locking-issues to the caller ... | ||
259 | */ | ||
260 | static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout) | ||
261 | { | ||
262 | int data; | ||
263 | |||
264 | while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) { | ||
265 | udelay(100); | ||
266 | --timeout; | ||
267 | } /* while */ | ||
268 | |||
269 | return data; | ||
270 | } | ||
271 | |||
272 | /* | ||
273 | * Write to the SoundScape's host-mode control registers, but | ||
274 | * leave any locking issues to the caller ... | ||
275 | */ | ||
276 | static inline int host_write_unsafe(unsigned io_base, unsigned char data) | ||
277 | { | ||
278 | if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) { | ||
279 | outb(data, HOST_DATA_IO(io_base)); | ||
280 | return 1; | ||
281 | } | ||
282 | |||
283 | return 0; | ||
284 | } | ||
285 | |||
286 | /* | ||
287 | * Write to the SoundScape's host-mode control registers, performing | ||
288 | * a limited amount of busy-waiting if the register isn't ready. | ||
289 | * Also leaves all locking-issues to the caller ... | ||
290 | */ | ||
291 | static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data, | ||
292 | unsigned timeout) | ||
293 | { | ||
294 | int err; | ||
295 | |||
296 | while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) { | ||
297 | udelay(100); | ||
298 | --timeout; | ||
299 | } /* while */ | ||
300 | |||
301 | return err; | ||
302 | } | ||
303 | |||
304 | |||
305 | /* | ||
306 | * Check that the MIDI subsystem is operational. If it isn't, | ||
307 | * then we will hang the computer if we try to use it ... | ||
308 | * | ||
309 | * NOTE: This check is based upon observation, not documentation. | ||
310 | */ | ||
311 | static inline int verify_mpu401(const mpu401_t * mpu) | ||
312 | { | ||
313 | return ((inb(MIDI_CTRL_IO(mpu->port)) & 0xc0) == 0x80); | ||
314 | } | ||
315 | |||
316 | /* | ||
317 | * This is apparently the standard way to initailise an MPU-401 | ||
318 | */ | ||
319 | static inline void initialise_mpu401(const mpu401_t * mpu) | ||
320 | { | ||
321 | outb(0, MIDI_DATA_IO(mpu->port)); | ||
322 | } | ||
323 | |||
324 | /* | ||
325 | * Tell the SoundScape to activate the AD1845 chip (I think). | ||
326 | * The AD1845 detection fails if we *don't* do this, so I | ||
327 | * think that this is a good idea ... | ||
328 | */ | ||
329 | static inline void activate_ad1845_unsafe(unsigned io_base) | ||
330 | { | ||
331 | sscape_write_unsafe(io_base, GA_HMCTL_REG, (sscape_read_unsafe(io_base, GA_HMCTL_REG) & 0xcf) | 0x10); | ||
332 | sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80); | ||
333 | } | ||
334 | |||
335 | /* | ||
336 | * Do the necessary ALSA-level cleanup to deallocate our driver ... | ||
337 | */ | ||
338 | static void soundscape_free(snd_card_t * c) | ||
339 | { | ||
340 | register struct soundscape *sscape = get_card_soundscape(c); | ||
341 | release_resource(sscape->io_res); | ||
342 | kfree_nocheck(sscape->io_res); | ||
343 | free_dma(sscape->chip->dma1); | ||
344 | } | ||
345 | |||
346 | /* | ||
347 | * Put this process into an idle wait-state for a certain number | ||
348 | * of "jiffies". The process can almost certainly be rescheduled | ||
349 | * while we're waiting, and so we must NOT be holding any spinlocks | ||
350 | * when we call this function. If we are then we risk DEADLOCK in | ||
351 | * SMP (Ha!) or pre-emptible kernels. | ||
352 | */ | ||
353 | static inline void sleep(long jiffs, int state) | ||
354 | { | ||
355 | set_current_state(state); | ||
356 | schedule_timeout(jiffs); | ||
357 | } | ||
358 | |||
359 | /* | ||
360 | * Tell the SoundScape to begin a DMA tranfer using the given channel. | ||
361 | * All locking issues are left to the caller. | ||
362 | */ | ||
363 | static inline void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg) | ||
364 | { | ||
365 | sscape_write_unsafe(io_base, reg, sscape_read_unsafe(io_base, reg) | 0x01); | ||
366 | sscape_write_unsafe(io_base, reg, sscape_read_unsafe(io_base, reg) & 0xfe); | ||
367 | } | ||
368 | |||
369 | /* | ||
370 | * Wait for a DMA transfer to complete. This is a "limited busy-wait", | ||
371 | * and all locking issues are left to the caller. | ||
372 | */ | ||
373 | static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg, unsigned timeout) | ||
374 | { | ||
375 | while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) { | ||
376 | udelay(100); | ||
377 | --timeout; | ||
378 | } /* while */ | ||
379 | |||
380 | return (sscape_read_unsafe(io_base, reg) & 0x01); | ||
381 | } | ||
382 | |||
383 | /* | ||
384 | * Wait for the On-Board Processor to return its start-up | ||
385 | * acknowledgement sequence. This wait is too long for | ||
386 | * us to perform "busy-waiting", and so we must sleep. | ||
387 | * This in turn means that we must not be holding any | ||
388 | * spinlocks when we call this function. | ||
389 | */ | ||
390 | static int obp_startup_ack(struct soundscape *s, unsigned timeout) | ||
391 | { | ||
392 | while (timeout != 0) { | ||
393 | unsigned long flags; | ||
394 | unsigned char x; | ||
395 | |||
396 | sleep(1, TASK_INTERRUPTIBLE); | ||
397 | |||
398 | spin_lock_irqsave(&s->lock, flags); | ||
399 | x = inb(HOST_DATA_IO(s->io_base)); | ||
400 | spin_unlock_irqrestore(&s->lock, flags); | ||
401 | if ((x & 0xfe) == 0xfe) | ||
402 | return 1; | ||
403 | |||
404 | --timeout; | ||
405 | } /* while */ | ||
406 | |||
407 | return 0; | ||
408 | } | ||
409 | |||
410 | /* | ||
411 | * Wait for the host to return its start-up acknowledgement | ||
412 | * sequence. This wait is too long for us to perform | ||
413 | * "busy-waiting", and so we must sleep. This in turn means | ||
414 | * that we must not be holding any spinlocks when we call | ||
415 | * this function. | ||
416 | */ | ||
417 | static int host_startup_ack(struct soundscape *s, unsigned timeout) | ||
418 | { | ||
419 | while (timeout != 0) { | ||
420 | unsigned long flags; | ||
421 | unsigned char x; | ||
422 | |||
423 | sleep(1, TASK_INTERRUPTIBLE); | ||
424 | |||
425 | spin_lock_irqsave(&s->lock, flags); | ||
426 | x = inb(HOST_DATA_IO(s->io_base)); | ||
427 | spin_unlock_irqrestore(&s->lock, flags); | ||
428 | if (x == 0xfe) | ||
429 | return 1; | ||
430 | |||
431 | --timeout; | ||
432 | } /* while */ | ||
433 | |||
434 | return 0; | ||
435 | } | ||
436 | |||
437 | /* | ||
438 | * Upload a byte-stream into the SoundScape using DMA channel A. | ||
439 | */ | ||
440 | static int upload_dma_data(struct soundscape *s, | ||
441 | const unsigned char __user *data, | ||
442 | size_t size) | ||
443 | { | ||
444 | unsigned long flags; | ||
445 | struct snd_dma_buffer dma; | ||
446 | int ret; | ||
447 | |||
448 | if (!get_dmabuf(&dma, PAGE_ALIGN(size))) | ||
449 | return -ENOMEM; | ||
450 | |||
451 | spin_lock_irqsave(&s->lock, flags); | ||
452 | |||
453 | /* | ||
454 | * Reset the board ... | ||
455 | */ | ||
456 | sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f); | ||
457 | |||
458 | /* | ||
459 | * Enable the DMA channels and configure them ... | ||
460 | */ | ||
461 | sscape_write_unsafe(s->io_base, GA_DMACFG_REG, 0x50); | ||
462 | sscape_write_unsafe(s->io_base, GA_DMAA_REG, (s->chip->dma1 << 4) | DMA_8BIT); | ||
463 | sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20); | ||
464 | |||
465 | /* | ||
466 | * Take the board out of reset ... | ||
467 | */ | ||
468 | sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) | 0x80); | ||
469 | |||
470 | /* | ||
471 | * Upload the user's data (firmware?) to the SoundScape | ||
472 | * board through the DMA channel ... | ||
473 | */ | ||
474 | while (size != 0) { | ||
475 | unsigned long len; | ||
476 | |||
477 | /* | ||
478 | * Apparently, copying to/from userspace can sleep. | ||
479 | * We are therefore forbidden from holding any | ||
480 | * spinlocks while we copy ... | ||
481 | */ | ||
482 | spin_unlock_irqrestore(&s->lock, flags); | ||
483 | |||
484 | /* | ||
485 | * Remember that the data that we want to DMA | ||
486 | * comes from USERSPACE. We have already verified | ||
487 | * the userspace pointer ... | ||
488 | */ | ||
489 | len = min(size, dma.bytes); | ||
490 | len -= __copy_from_user(dma.area, data, len); | ||
491 | data += len; | ||
492 | size -= len; | ||
493 | |||
494 | /* | ||
495 | * Grab that spinlock again, now that we've | ||
496 | * finished copying! | ||
497 | */ | ||
498 | spin_lock_irqsave(&s->lock, flags); | ||
499 | |||
500 | snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE); | ||
501 | sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG); | ||
502 | if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) { | ||
503 | /* | ||
504 | * Don't forget to release this spinlock we're holding ... | ||
505 | */ | ||
506 | spin_unlock_irqrestore(&s->lock, flags); | ||
507 | |||
508 | snd_printk(KERN_ERR "sscape: DMA upload has timed out\n"); | ||
509 | ret = -EAGAIN; | ||
510 | goto _release_dma; | ||
511 | } | ||
512 | } /* while */ | ||
513 | |||
514 | set_host_mode_unsafe(s->io_base); | ||
515 | |||
516 | /* | ||
517 | * Boot the board ... (I think) | ||
518 | */ | ||
519 | sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) | 0x40); | ||
520 | spin_unlock_irqrestore(&s->lock, flags); | ||
521 | |||
522 | /* | ||
523 | * If all has gone well, then the board should acknowledge | ||
524 | * the new upload and tell us that it has rebooted OK. We | ||
525 | * give it 5 seconds (max) ... | ||
526 | */ | ||
527 | ret = 0; | ||
528 | if (!obp_startup_ack(s, 5)) { | ||
529 | snd_printk(KERN_ERR "sscape: No response from on-board processor after upload\n"); | ||
530 | ret = -EAGAIN; | ||
531 | } else if (!host_startup_ack(s, 5)) { | ||
532 | snd_printk(KERN_ERR "sscape: SoundScape failed to initialise\n"); | ||
533 | ret = -EAGAIN; | ||
534 | } | ||
535 | |||
536 | _release_dma: | ||
537 | /* | ||
538 | * NOTE!!! We are NOT holding any spinlocks at this point !!! | ||
539 | */ | ||
540 | sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_ODIE ? 0x70 : 0x40)); | ||
541 | free_dmabuf(&dma); | ||
542 | |||
543 | return ret; | ||
544 | } | ||
545 | |||
546 | /* | ||
547 | * Upload the bootblock(?) into the SoundScape. The only | ||
548 | * purpose of this block of code seems to be to tell | ||
549 | * us which version of the microcode we should be using. | ||
550 | * | ||
551 | * NOTE: The boot-block data resides in USER-SPACE!!! | ||
552 | * However, we have already verified its memory | ||
553 | * addresses by the time we get here. | ||
554 | */ | ||
555 | static int sscape_upload_bootblock(struct soundscape *sscape, struct sscape_bootblock __user *bb) | ||
556 | { | ||
557 | unsigned long flags; | ||
558 | int data = 0; | ||
559 | int ret; | ||
560 | |||
561 | ret = upload_dma_data(sscape, bb->code, sizeof(bb->code)); | ||
562 | |||
563 | spin_lock_irqsave(&sscape->lock, flags); | ||
564 | if (ret == 0) { | ||
565 | data = host_read_ctrl_unsafe(sscape->io_base, 100); | ||
566 | } | ||
567 | set_midi_mode_unsafe(sscape->io_base); | ||
568 | spin_unlock_irqrestore(&sscape->lock, flags); | ||
569 | |||
570 | if (ret == 0) { | ||
571 | if (data < 0) { | ||
572 | snd_printk(KERN_ERR "sscape: timeout reading firmware version\n"); | ||
573 | ret = -EAGAIN; | ||
574 | } | ||
575 | else if (__copy_to_user(&bb->version, &data, sizeof(bb->version))) { | ||
576 | ret = -EFAULT; | ||
577 | } | ||
578 | } | ||
579 | |||
580 | return ret; | ||
581 | } | ||
582 | |||
583 | /* | ||
584 | * Upload the microcode into the SoundScape. The | ||
585 | * microcode is 64K of data, and if we try to copy | ||
586 | * it into a local variable then we will SMASH THE | ||
587 | * KERNEL'S STACK! We therefore leave it in USER | ||
588 | * SPACE, and save ourselves from copying it at all. | ||
589 | */ | ||
590 | static int sscape_upload_microcode(struct soundscape *sscape, | ||
591 | const struct sscape_microcode __user *mc) | ||
592 | { | ||
593 | unsigned long flags; | ||
594 | char __user *code; | ||
595 | int err; | ||
596 | |||
597 | /* | ||
598 | * We are going to have to copy this data into a special | ||
599 | * DMA-able buffer before we can upload it. We shall therefore | ||
600 | * just check that the data pointer is valid for now. | ||
601 | * | ||
602 | * NOTE: This buffer is 64K long! That's WAY too big to | ||
603 | * copy into a stack-temporary anyway. | ||
604 | */ | ||
605 | if ( get_user(code, &mc->code) || | ||
606 | !access_ok(VERIFY_READ, code, SSCAPE_MICROCODE_SIZE) ) | ||
607 | return -EFAULT; | ||
608 | |||
609 | if ((err = upload_dma_data(sscape, code, SSCAPE_MICROCODE_SIZE)) == 0) { | ||
610 | snd_printk(KERN_INFO "sscape: MIDI firmware loaded\n"); | ||
611 | } | ||
612 | |||
613 | spin_lock_irqsave(&sscape->lock, flags); | ||
614 | set_midi_mode_unsafe(sscape->io_base); | ||
615 | spin_unlock_irqrestore(&sscape->lock, flags); | ||
616 | |||
617 | initialise_mpu401(sscape->mpu); | ||
618 | |||
619 | return err; | ||
620 | } | ||
621 | |||
622 | /* | ||
623 | * Hardware-specific device functions, to implement special | ||
624 | * IOCTLs for the SoundScape card. This is how we upload | ||
625 | * the microcode into the card, for example, and so we | ||
626 | * must ensure that no two processes can open this device | ||
627 | * simultaneously, and that we can't open it at all if | ||
628 | * someone is using the MIDI device. | ||
629 | */ | ||
630 | static int sscape_hw_open(snd_hwdep_t * hw, struct file *file) | ||
631 | { | ||
632 | register struct soundscape *sscape = get_hwdep_soundscape(hw); | ||
633 | unsigned long flags; | ||
634 | int err; | ||
635 | |||
636 | spin_lock_irqsave(&sscape->fwlock, flags); | ||
637 | |||
638 | if ((sscape->midi_usage != 0) || sscape->hw_in_use) { | ||
639 | err = -EBUSY; | ||
640 | } else { | ||
641 | sscape->hw_in_use = 1; | ||
642 | err = 0; | ||
643 | } | ||
644 | |||
645 | spin_unlock_irqrestore(&sscape->fwlock, flags); | ||
646 | return err; | ||
647 | } | ||
648 | |||
649 | static int sscape_hw_release(snd_hwdep_t * hw, struct file *file) | ||
650 | { | ||
651 | register struct soundscape *sscape = get_hwdep_soundscape(hw); | ||
652 | unsigned long flags; | ||
653 | |||
654 | spin_lock_irqsave(&sscape->fwlock, flags); | ||
655 | sscape->hw_in_use = 0; | ||
656 | spin_unlock_irqrestore(&sscape->fwlock, flags); | ||
657 | return 0; | ||
658 | } | ||
659 | |||
660 | static int sscape_hw_ioctl(snd_hwdep_t * hw, struct file *file, | ||
661 | unsigned int cmd, unsigned long arg) | ||
662 | { | ||
663 | struct soundscape *sscape = get_hwdep_soundscape(hw); | ||
664 | int err = -EBUSY; | ||
665 | |||
666 | switch (cmd) { | ||
667 | case SND_SSCAPE_LOAD_BOOTB: | ||
668 | { | ||
669 | register struct sscape_bootblock __user *bb = (struct sscape_bootblock __user *) arg; | ||
670 | |||
671 | /* | ||
672 | * We are going to have to copy this data into a special | ||
673 | * DMA-able buffer before we can upload it. We shall therefore | ||
674 | * just check that the data pointer is valid for now ... | ||
675 | */ | ||
676 | if ( !access_ok(VERIFY_READ, bb->code, sizeof(bb->code)) ) | ||
677 | return -EFAULT; | ||
678 | |||
679 | /* | ||
680 | * Now check that we can write the firmware version number too... | ||
681 | */ | ||
682 | if ( !access_ok(VERIFY_WRITE, &bb->version, sizeof(bb->version)) ) | ||
683 | return -EFAULT; | ||
684 | |||
685 | err = sscape_upload_bootblock(sscape, bb); | ||
686 | } | ||
687 | break; | ||
688 | |||
689 | case SND_SSCAPE_LOAD_MCODE: | ||
690 | { | ||
691 | register const struct sscape_microcode __user *mc = (const struct sscape_microcode __user *) arg; | ||
692 | |||
693 | err = sscape_upload_microcode(sscape, mc); | ||
694 | } | ||
695 | break; | ||
696 | |||
697 | default: | ||
698 | err = -EINVAL; | ||
699 | break; | ||
700 | } /* switch */ | ||
701 | |||
702 | return err; | ||
703 | } | ||
704 | |||
705 | |||
706 | /* | ||
707 | * Mixer control for the SoundScape's MIDI device. | ||
708 | */ | ||
709 | static int sscape_midi_info(snd_kcontrol_t * ctl, | ||
710 | snd_ctl_elem_info_t * uinfo) | ||
711 | { | ||
712 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | ||
713 | uinfo->count = 1; | ||
714 | uinfo->value.integer.min = 0; | ||
715 | uinfo->value.integer.max = 127; | ||
716 | return 0; | ||
717 | } | ||
718 | |||
719 | static int sscape_midi_get(snd_kcontrol_t * kctl, | ||
720 | snd_ctl_elem_value_t * uctl) | ||
721 | { | ||
722 | cs4231_t *chip = snd_kcontrol_chip(kctl); | ||
723 | snd_card_t *card = chip->card; | ||
724 | register struct soundscape *s = get_card_soundscape(card); | ||
725 | unsigned long flags; | ||
726 | |||
727 | spin_lock_irqsave(&s->lock, flags); | ||
728 | set_host_mode_unsafe(s->io_base); | ||
729 | |||
730 | if (host_write_ctrl_unsafe(s->io_base, CMD_GET_MIDI_VOL, 100)) { | ||
731 | uctl->value.integer.value[0] = host_read_ctrl_unsafe(s->io_base, 100); | ||
732 | } | ||
733 | |||
734 | set_midi_mode_unsafe(s->io_base); | ||
735 | spin_unlock_irqrestore(&s->lock, flags); | ||
736 | return 0; | ||
737 | } | ||
738 | |||
739 | static int sscape_midi_put(snd_kcontrol_t * kctl, | ||
740 | snd_ctl_elem_value_t * uctl) | ||
741 | { | ||
742 | cs4231_t *chip = snd_kcontrol_chip(kctl); | ||
743 | snd_card_t *card = chip->card; | ||
744 | register struct soundscape *s = get_card_soundscape(card); | ||
745 | unsigned long flags; | ||
746 | int change; | ||
747 | |||
748 | spin_lock_irqsave(&s->lock, flags); | ||
749 | |||
750 | /* | ||
751 | * We need to put the board into HOST mode before we | ||
752 | * can send any volume-changing HOST commands ... | ||
753 | */ | ||
754 | set_host_mode_unsafe(s->io_base); | ||
755 | |||
756 | /* | ||
757 | * To successfully change the MIDI volume setting, you seem to | ||
758 | * have to write a volume command, write the new volume value, | ||
759 | * and then perform another volume-related command. Perhaps the | ||
760 | * first command is an "open" and the second command is a "close"? | ||
761 | */ | ||
762 | if (s->midi_vol == ((unsigned char) uctl->value.integer. value[0] & 127)) { | ||
763 | change = 0; | ||
764 | goto __skip_change; | ||
765 | } | ||
766 | change = (host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100) | ||
767 | && host_write_ctrl_unsafe(s->io_base, ((unsigned char) uctl->value.integer. value[0]) & 127, 100) | ||
768 | && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)); | ||
769 | __skip_change: | ||
770 | |||
771 | /* | ||
772 | * Take the board out of HOST mode and back into MIDI mode ... | ||
773 | */ | ||
774 | set_midi_mode_unsafe(s->io_base); | ||
775 | |||
776 | spin_unlock_irqrestore(&s->lock, flags); | ||
777 | return change; | ||
778 | } | ||
779 | |||
780 | static snd_kcontrol_new_t midi_mixer_ctl = { | ||
781 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | ||
782 | .name = "MIDI", | ||
783 | .info = sscape_midi_info, | ||
784 | .get = sscape_midi_get, | ||
785 | .put = sscape_midi_put | ||
786 | }; | ||
787 | |||
788 | /* | ||
789 | * The SoundScape can use two IRQs from a possible set of four. | ||
790 | * These IRQs are encoded as bit patterns so that they can be | ||
791 | * written to the control registers. | ||
792 | */ | ||
793 | static unsigned __devinit get_irq_config(int irq) | ||
794 | { | ||
795 | static const int valid_irq[] = { 9, 5, 7, 10 }; | ||
796 | unsigned cfg; | ||
797 | |||
798 | for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg) { | ||
799 | if (irq == valid_irq[cfg]) | ||
800 | return cfg; | ||
801 | } /* for */ | ||
802 | |||
803 | return INVALID_IRQ; | ||
804 | } | ||
805 | |||
806 | |||
807 | /* | ||
808 | * Perform certain arcane port-checks to see whether there | ||
809 | * is a SoundScape board lurking behind the given ports. | ||
810 | */ | ||
811 | static int __devinit detect_sscape(struct soundscape *s) | ||
812 | { | ||
813 | unsigned long flags; | ||
814 | unsigned d; | ||
815 | int retval = 0; | ||
816 | |||
817 | spin_lock_irqsave(&s->lock, flags); | ||
818 | |||
819 | /* | ||
820 | * The following code is lifted from the original OSS driver, | ||
821 | * and as I don't have a datasheet I cannot really comment | ||
822 | * on what it is doing... | ||
823 | */ | ||
824 | if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0) | ||
825 | goto _done; | ||
826 | |||
827 | d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0; | ||
828 | if ((d & 0x80) != 0) | ||
829 | goto _done; | ||
830 | |||
831 | if (d == 0) { | ||
832 | s->codec_type = 1; | ||
833 | s->ic_type = IC_ODIE; | ||
834 | } else if ((d & 0x60) != 0) { | ||
835 | s->codec_type = 2; | ||
836 | s->ic_type = IC_OPUS; | ||
837 | } else | ||
838 | goto _done; | ||
839 | |||
840 | outb(0xfa, ODIE_ADDR_IO(s->io_base)); | ||
841 | if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a) | ||
842 | goto _done; | ||
843 | |||
844 | outb(0xfe, ODIE_ADDR_IO(s->io_base)); | ||
845 | if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e) | ||
846 | goto _done; | ||
847 | if ((inb(ODIE_DATA_IO(s->io_base)) & 0x9f) != 0x0e) | ||
848 | goto _done; | ||
849 | |||
850 | /* | ||
851 | * SoundScape successfully detected! | ||
852 | */ | ||
853 | retval = 1; | ||
854 | |||
855 | _done: | ||
856 | spin_unlock_irqrestore(&s->lock, flags); | ||
857 | return retval; | ||
858 | } | ||
859 | |||
860 | /* | ||
861 | * ALSA callback function, called when attempting to open the MIDI device. | ||
862 | * Check that the MIDI firmware has been loaded, because we don't want | ||
863 | * to crash the machine. Also check that someone isn't using the hardware | ||
864 | * IOCTL device. | ||
865 | */ | ||
866 | static int mpu401_open(mpu401_t * mpu) | ||
867 | { | ||
868 | int err; | ||
869 | |||
870 | if (!verify_mpu401(mpu)) { | ||
871 | snd_printk(KERN_ERR "sscape: MIDI disabled, please load firmware\n"); | ||
872 | err = -ENODEV; | ||
873 | } else { | ||
874 | register struct soundscape *sscape = get_mpu401_soundscape(mpu); | ||
875 | unsigned long flags; | ||
876 | |||
877 | spin_lock_irqsave(&sscape->fwlock, flags); | ||
878 | |||
879 | if (sscape->hw_in_use || (sscape->midi_usage == ULONG_MAX)) { | ||
880 | err = -EBUSY; | ||
881 | } else { | ||
882 | ++(sscape->midi_usage); | ||
883 | err = 0; | ||
884 | } | ||
885 | |||
886 | spin_unlock_irqrestore(&sscape->fwlock, flags); | ||
887 | } | ||
888 | |||
889 | return err; | ||
890 | } | ||
891 | |||
892 | static void mpu401_close(mpu401_t * mpu) | ||
893 | { | ||
894 | register struct soundscape *sscape = get_mpu401_soundscape(mpu); | ||
895 | unsigned long flags; | ||
896 | |||
897 | spin_lock_irqsave(&sscape->fwlock, flags); | ||
898 | --(sscape->midi_usage); | ||
899 | spin_unlock_irqrestore(&sscape->fwlock, flags); | ||
900 | } | ||
901 | |||
902 | /* | ||
903 | * Initialse an MPU-401 subdevice for MIDI support on the SoundScape. | ||
904 | */ | ||
905 | static int __devinit create_mpu401(snd_card_t * card, int devnum, unsigned long port, int irq) | ||
906 | { | ||
907 | struct soundscape *sscape = get_card_soundscape(card); | ||
908 | snd_rawmidi_t *rawmidi; | ||
909 | int err; | ||
910 | |||
911 | #define MPU401_SHARE_HARDWARE 1 | ||
912 | if ((err = snd_mpu401_uart_new(card, devnum, | ||
913 | MPU401_HW_MPU401, | ||
914 | port, MPU401_SHARE_HARDWARE, | ||
915 | irq, SA_INTERRUPT, | ||
916 | &rawmidi)) == 0) { | ||
917 | mpu401_t *mpu = (mpu401_t *) rawmidi->private_data; | ||
918 | mpu->open_input = mpu401_open; | ||
919 | mpu->open_output = mpu401_open; | ||
920 | mpu->close_input = mpu401_close; | ||
921 | mpu->close_output = mpu401_close; | ||
922 | mpu->private_data = sscape; | ||
923 | sscape->mpu = mpu; | ||
924 | |||
925 | initialise_mpu401(mpu); | ||
926 | } | ||
927 | |||
928 | return err; | ||
929 | } | ||
930 | |||
931 | |||
932 | /* | ||
933 | * Override for the CS4231 playback format function. | ||
934 | * The AD1845 has much simpler format and rate selection. | ||
935 | */ | ||
936 | static void ad1845_playback_format(cs4231_t * chip, snd_pcm_hw_params_t * params, unsigned char format) | ||
937 | { | ||
938 | unsigned long flags; | ||
939 | unsigned rate = params_rate(params); | ||
940 | |||
941 | /* | ||
942 | * The AD1845 can't handle sample frequencies | ||
943 | * outside of 4 kHZ to 50 kHZ | ||
944 | */ | ||
945 | if (rate > 50000) | ||
946 | rate = 50000; | ||
947 | else if (rate < 4000) | ||
948 | rate = 4000; | ||
949 | |||
950 | spin_lock_irqsave(&chip->reg_lock, flags); | ||
951 | |||
952 | /* | ||
953 | * Program the AD1845 correctly for the playback stream. | ||
954 | * Note that we do NOT need to toggle the MCE bit because | ||
955 | * the PLAYBACK_ENABLE bit of the Interface Configuration | ||
956 | * register is set. | ||
957 | * | ||
958 | * NOTE: We seem to need to write to the MSB before the LSB | ||
959 | * to get the correct sample frequency. | ||
960 | */ | ||
961 | snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, (format & 0xf0)); | ||
962 | snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); | ||
963 | snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); | ||
964 | |||
965 | spin_unlock_irqrestore(&chip->reg_lock, flags); | ||
966 | } | ||
967 | |||
968 | /* | ||
969 | * Override for the CS4231 capture format function. | ||
970 | * The AD1845 has much simpler format and rate selection. | ||
971 | */ | ||
972 | static void ad1845_capture_format(cs4231_t * chip, snd_pcm_hw_params_t * params, unsigned char format) | ||
973 | { | ||
974 | unsigned long flags; | ||
975 | unsigned rate = params_rate(params); | ||
976 | |||
977 | /* | ||
978 | * The AD1845 can't handle sample frequencies | ||
979 | * outside of 4 kHZ to 50 kHZ | ||
980 | */ | ||
981 | if (rate > 50000) | ||
982 | rate = 50000; | ||
983 | else if (rate < 4000) | ||
984 | rate = 4000; | ||
985 | |||
986 | spin_lock_irqsave(&chip->reg_lock, flags); | ||
987 | |||
988 | /* | ||
989 | * Program the AD1845 correctly for the playback stream. | ||
990 | * Note that we do NOT need to toggle the MCE bit because | ||
991 | * the CAPTURE_ENABLE bit of the Interface Configuration | ||
992 | * register is set. | ||
993 | * | ||
994 | * NOTE: We seem to need to write to the MSB before the LSB | ||
995 | * to get the correct sample frequency. | ||
996 | */ | ||
997 | snd_cs4231_out(chip, CS4231_REC_FORMAT, (format & 0xf0)); | ||
998 | snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); | ||
999 | snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); | ||
1000 | |||
1001 | spin_unlock_irqrestore(&chip->reg_lock, flags); | ||
1002 | } | ||
1003 | |||
1004 | /* | ||
1005 | * Create an AD1845 PCM subdevice on the SoundScape. The AD1845 | ||
1006 | * is very much like a CS4231, with a few extra bits. We will | ||
1007 | * try to support at least some of the extra bits by overriding | ||
1008 | * some of the CS4231 callback. | ||
1009 | */ | ||
1010 | static int __devinit create_ad1845(snd_card_t * card, unsigned port, int irq, int dma1) | ||
1011 | { | ||
1012 | register struct soundscape *sscape = get_card_soundscape(card); | ||
1013 | cs4231_t *chip; | ||
1014 | int err; | ||
1015 | |||
1016 | #define CS4231_SHARE_HARDWARE (CS4231_HWSHARE_DMA1 | CS4231_HWSHARE_DMA2) | ||
1017 | /* | ||
1018 | * The AD1845 PCM device is only half-duplex, and so | ||
1019 | * we only give it one DMA channel ... | ||
1020 | */ | ||
1021 | if ((err = snd_cs4231_create(card, | ||
1022 | port, -1, irq, dma1, dma1, | ||
1023 | CS4231_HW_DETECT, | ||
1024 | CS4231_HWSHARE_DMA1, &chip)) == 0) { | ||
1025 | unsigned long flags; | ||
1026 | snd_pcm_t *pcm; | ||
1027 | |||
1028 | #define AD1845_FREQ_SEL_ENABLE 0x08 | ||
1029 | |||
1030 | #define AD1845_PWR_DOWN_CTRL 0x1b | ||
1031 | #define AD1845_CRYS_CLOCK_SEL 0x1d | ||
1032 | |||
1033 | /* | ||
1034 | * It turns out that the PLAYBACK_ENABLE bit is set | ||
1035 | * by the lowlevel driver ... | ||
1036 | * | ||
1037 | #define AD1845_IFACE_CONFIG \ | ||
1038 | (CS4231_AUTOCALIB | CS4231_RECORD_ENABLE | CS4231_PLAYBACK_ENABLE) | ||
1039 | snd_cs4231_mce_up(chip); | ||
1040 | spin_lock_irqsave(&chip->reg_lock, flags); | ||
1041 | snd_cs4231_out(chip, CS4231_IFACE_CTRL, AD1845_IFACE_CONFIG); | ||
1042 | spin_unlock_irqrestore(&chip->reg_lock, flags); | ||
1043 | snd_cs4231_mce_down(chip); | ||
1044 | */ | ||
1045 | |||
1046 | /* | ||
1047 | * The input clock frequency on the SoundScape must | ||
1048 | * be 14.31818 MHz, because we must set this register | ||
1049 | * to get the playback to sound correct ... | ||
1050 | */ | ||
1051 | snd_cs4231_mce_up(chip); | ||
1052 | spin_lock_irqsave(&chip->reg_lock, flags); | ||
1053 | snd_cs4231_out(chip, AD1845_CRYS_CLOCK_SEL, 0x20); | ||
1054 | spin_unlock_irqrestore(&chip->reg_lock, flags); | ||
1055 | snd_cs4231_mce_down(chip); | ||
1056 | |||
1057 | /* | ||
1058 | * More custom configuration: | ||
1059 | * a) select "mode 2", and provide a current drive of 8 mA | ||
1060 | * b) enable frequency selection (for capture/playback) | ||
1061 | */ | ||
1062 | spin_lock_irqsave(&chip->reg_lock, flags); | ||
1063 | snd_cs4231_out(chip, CS4231_MISC_INFO, (CS4231_MODE2 | 0x10)); | ||
1064 | snd_cs4231_out(chip, AD1845_PWR_DOWN_CTRL, snd_cs4231_in(chip, AD1845_PWR_DOWN_CTRL) | AD1845_FREQ_SEL_ENABLE); | ||
1065 | spin_unlock_irqrestore(&chip->reg_lock, flags); | ||
1066 | |||
1067 | if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0) { | ||
1068 | snd_printk(KERN_ERR "sscape: No PCM device for AD1845 chip\n"); | ||
1069 | goto _error; | ||
1070 | } | ||
1071 | |||
1072 | if ((err = snd_cs4231_mixer(chip)) < 0) { | ||
1073 | snd_printk(KERN_ERR "sscape: No mixer device for AD1845 chip\n"); | ||
1074 | goto _error; | ||
1075 | } | ||
1076 | |||
1077 | if ((err = snd_ctl_add(card, snd_ctl_new1(&midi_mixer_ctl, chip))) < 0) { | ||
1078 | snd_printk(KERN_ERR "sscape: Could not create MIDI mixer control\n"); | ||
1079 | goto _error; | ||
1080 | } | ||
1081 | |||
1082 | strcpy(card->driver, "SoundScape"); | ||
1083 | strcpy(card->shortname, pcm->name); | ||
1084 | snprintf(card->longname, sizeof(card->longname), | ||
1085 | "%s at 0x%lx, IRQ %d, DMA %d\n", | ||
1086 | pcm->name, chip->port, chip->irq, chip->dma1); | ||
1087 | chip->set_playback_format = ad1845_playback_format; | ||
1088 | chip->set_capture_format = ad1845_capture_format; | ||
1089 | sscape->chip = chip; | ||
1090 | } | ||
1091 | |||
1092 | _error: | ||
1093 | return err; | ||
1094 | } | ||
1095 | |||
1096 | |||
1097 | struct params | ||
1098 | { | ||
1099 | int index; | ||
1100 | const char *id; | ||
1101 | unsigned port; | ||
1102 | int irq; | ||
1103 | int mpu_irq; | ||
1104 | int dma1; | ||
1105 | }; | ||
1106 | |||
1107 | |||
1108 | static inline struct params* | ||
1109 | init_params(struct params *params, | ||
1110 | int index, | ||
1111 | const char *id, | ||
1112 | unsigned port, | ||
1113 | int irq, | ||
1114 | int mpu_irq, | ||
1115 | int dma1) | ||
1116 | { | ||
1117 | params->index = index; | ||
1118 | params->id = id; | ||
1119 | params->port = port; | ||
1120 | params->irq = irq; | ||
1121 | params->mpu_irq = mpu_irq; | ||
1122 | params->dma1 = (dma1 & 0x03); | ||
1123 | |||
1124 | return params; | ||
1125 | } | ||
1126 | |||
1127 | |||
1128 | /* | ||
1129 | * Create an ALSA soundcard entry for the SoundScape, using | ||
1130 | * the given list of port, IRQ and DMA resources. | ||
1131 | */ | ||
1132 | static int __devinit create_sscape(const struct params *params, snd_card_t **rcardp) | ||
1133 | { | ||
1134 | snd_card_t *card; | ||
1135 | register struct soundscape *sscape; | ||
1136 | register unsigned dma_cfg; | ||
1137 | unsigned irq_cfg; | ||
1138 | unsigned mpu_irq_cfg; | ||
1139 | struct resource *io_res; | ||
1140 | unsigned long flags; | ||
1141 | int err; | ||
1142 | |||
1143 | /* | ||
1144 | * Check that the user didn't pass us garbage data ... | ||
1145 | */ | ||
1146 | irq_cfg = get_irq_config(params->irq); | ||
1147 | if (irq_cfg == INVALID_IRQ) { | ||
1148 | snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", params->irq); | ||
1149 | return -ENXIO; | ||
1150 | } | ||
1151 | |||
1152 | mpu_irq_cfg = get_irq_config(params->mpu_irq); | ||
1153 | if (mpu_irq_cfg == INVALID_IRQ) { | ||
1154 | printk(KERN_ERR "sscape: Invalid IRQ %d\n", params->mpu_irq); | ||
1155 | return -ENXIO; | ||
1156 | } | ||
1157 | |||
1158 | /* | ||
1159 | * Grab IO ports that we will need to probe so that we | ||
1160 | * can detect and control this hardware ... | ||
1161 | */ | ||
1162 | if ((io_res = request_region(params->port, 8, "SoundScape")) == NULL) { | ||
1163 | snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", params->port); | ||
1164 | return -EBUSY; | ||
1165 | } | ||
1166 | |||
1167 | /* | ||
1168 | * Grab both DMA channels (OK, only one for now) ... | ||
1169 | */ | ||
1170 | if ((err = request_dma(params->dma1, "SoundScape")) < 0) { | ||
1171 | snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", params->dma1); | ||
1172 | goto _release_region; | ||
1173 | } | ||
1174 | |||
1175 | /* | ||
1176 | * Create a new ALSA sound card entry, in anticipation | ||
1177 | * of detecting our hardware ... | ||
1178 | */ | ||
1179 | if ((card = snd_card_new(params->index, params->id, THIS_MODULE, sizeof(struct soundscape))) == NULL) { | ||
1180 | err = -ENOMEM; | ||
1181 | goto _release_dma; | ||
1182 | } | ||
1183 | |||
1184 | sscape = get_card_soundscape(card); | ||
1185 | spin_lock_init(&sscape->lock); | ||
1186 | spin_lock_init(&sscape->fwlock); | ||
1187 | sscape->io_res = io_res; | ||
1188 | sscape->io_base = params->port; | ||
1189 | |||
1190 | if (!detect_sscape(sscape)) { | ||
1191 | printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base); | ||
1192 | err = -ENODEV; | ||
1193 | goto _release_card; | ||
1194 | } | ||
1195 | |||
1196 | printk(KERN_INFO "sscape: hardware detected at 0x%x, using IRQ %d, DMA %d\n", | ||
1197 | sscape->io_base, params->irq, params->dma1); | ||
1198 | |||
1199 | /* | ||
1200 | * Now create the hardware-specific device so that we can | ||
1201 | * load the microcode into the on-board processor. | ||
1202 | * We cannot use the MPU-401 MIDI system until this firmware | ||
1203 | * has been loaded into the card. | ||
1204 | */ | ||
1205 | if ((err = snd_hwdep_new(card, "MC68EC000", 0, &(sscape->hw))) < 0) { | ||
1206 | printk(KERN_ERR "sscape: Failed to create firmware device\n"); | ||
1207 | goto _release_card; | ||
1208 | } | ||
1209 | strlcpy(sscape->hw->name, "SoundScape M68K", sizeof(sscape->hw->name)); | ||
1210 | sscape->hw->name[sizeof(sscape->hw->name) - 1] = '\0'; | ||
1211 | sscape->hw->iface = SNDRV_HWDEP_IFACE_SSCAPE; | ||
1212 | sscape->hw->ops.open = sscape_hw_open; | ||
1213 | sscape->hw->ops.release = sscape_hw_release; | ||
1214 | sscape->hw->ops.ioctl = sscape_hw_ioctl; | ||
1215 | sscape->hw->private_data = sscape; | ||
1216 | |||
1217 | /* | ||
1218 | * Tell the on-board devices where their resources are (I think - | ||
1219 | * I can't be sure without a datasheet ... So many magic values!) | ||
1220 | */ | ||
1221 | spin_lock_irqsave(&sscape->lock, flags); | ||
1222 | |||
1223 | activate_ad1845_unsafe(sscape->io_base); | ||
1224 | |||
1225 | sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x00); /* disable */ | ||
1226 | sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e); | ||
1227 | sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00); | ||
1228 | |||
1229 | /* | ||
1230 | * Enable and configure the DMA channels ... | ||
1231 | */ | ||
1232 | sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50); | ||
1233 | dma_cfg = (sscape->ic_type == IC_ODIE ? 0x70 : 0x40); | ||
1234 | sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg); | ||
1235 | sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20); | ||
1236 | |||
1237 | sscape_write_unsafe(sscape->io_base, | ||
1238 | GA_INTCFG_REG, 0xf0 | (mpu_irq_cfg << 2) | mpu_irq_cfg); | ||
1239 | sscape_write_unsafe(sscape->io_base, | ||
1240 | GA_CDCFG_REG, 0x09 | DMA_8BIT | (params->dma1 << 4) | (irq_cfg << 1)); | ||
1241 | |||
1242 | spin_unlock_irqrestore(&sscape->lock, flags); | ||
1243 | |||
1244 | /* | ||
1245 | * We have now enabled the codec chip, and so we should | ||
1246 | * detect the AD1845 device ... | ||
1247 | */ | ||
1248 | if ((err = create_ad1845(card, CODEC_IO(params->port), params->irq, params->dma1)) < 0) { | ||
1249 | printk(KERN_ERR "sscape: No AD1845 device at 0x%x, IRQ %d\n", | ||
1250 | CODEC_IO(params->port), params->irq); | ||
1251 | goto _release_card; | ||
1252 | } | ||
1253 | #define MIDI_DEVNUM 0 | ||
1254 | if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(params->port), params->mpu_irq)) < 0) { | ||
1255 | printk(KERN_ERR "sscape: Failed to create MPU-401 device at 0x%x\n", | ||
1256 | MPU401_IO(params->port)); | ||
1257 | goto _release_card; | ||
1258 | } | ||
1259 | |||
1260 | /* | ||
1261 | * Enable the master IRQ ... | ||
1262 | */ | ||
1263 | sscape_write(sscape, GA_INTENA_REG, 0x80); | ||
1264 | |||
1265 | if ((err = snd_card_register(card)) < 0) { | ||
1266 | printk(KERN_ERR "sscape: Failed to register sound card\n"); | ||
1267 | goto _release_card; | ||
1268 | } | ||
1269 | |||
1270 | /* | ||
1271 | * Initialize mixer | ||
1272 | */ | ||
1273 | sscape->midi_vol = 0; | ||
1274 | host_write_ctrl_unsafe(sscape->io_base, CMD_SET_MIDI_VOL, 100); | ||
1275 | host_write_ctrl_unsafe(sscape->io_base, 0, 100); | ||
1276 | host_write_ctrl_unsafe(sscape->io_base, CMD_XXX_MIDI_VOL, 100); | ||
1277 | |||
1278 | /* | ||
1279 | * Now that we have successfully created this sound card, | ||
1280 | * it is safe to store the pointer. | ||
1281 | * NOTE: we only register the sound card's "destructor" | ||
1282 | * function now that our "constructor" has completed. | ||
1283 | */ | ||
1284 | card->private_free = soundscape_free; | ||
1285 | *rcardp = card; | ||
1286 | |||
1287 | return 0; | ||
1288 | |||
1289 | _release_card: | ||
1290 | snd_card_free(card); | ||
1291 | |||
1292 | _release_dma: | ||
1293 | free_dma(params->dma1); | ||
1294 | |||
1295 | _release_region: | ||
1296 | release_resource(io_res); | ||
1297 | kfree_nocheck(io_res); | ||
1298 | |||
1299 | return err; | ||
1300 | } | ||
1301 | |||
1302 | |||
1303 | static int sscape_cards __devinitdata; | ||
1304 | static struct params sscape_params[SNDRV_CARDS] __devinitdata; | ||
1305 | |||
1306 | #ifdef CONFIG_PNP | ||
1307 | static inline int __devinit get_next_autoindex(int i) | ||
1308 | { | ||
1309 | while ((i < SNDRV_CARDS) && (port[i] != SNDRV_AUTO_PORT)) { | ||
1310 | ++i; | ||
1311 | } /* while */ | ||
1312 | |||
1313 | return i; | ||
1314 | } | ||
1315 | |||
1316 | |||
1317 | static inline int __devinit is_port_known(unsigned io, struct params *params, int cards) | ||
1318 | { | ||
1319 | while (--cards >= 0) { | ||
1320 | if (params[cards].port == io) | ||
1321 | return 1; | ||
1322 | } /* while */ | ||
1323 | |||
1324 | return 0; | ||
1325 | } | ||
1326 | |||
1327 | static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard, | ||
1328 | const struct pnp_card_device_id *pid) | ||
1329 | { | ||
1330 | struct pnp_dev *dev; | ||
1331 | static int idx = 0; | ||
1332 | int ret; | ||
1333 | |||
1334 | /* | ||
1335 | * Allow this function to fail *quietly* if all the ISA PnP | ||
1336 | * devices were configured using module parameters instead. | ||
1337 | */ | ||
1338 | if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS) { | ||
1339 | return -ENOSPC; | ||
1340 | } | ||
1341 | |||
1342 | /* | ||
1343 | * We have found a candidate ISA PnP card. Now we | ||
1344 | * have to check that it has the devices that we | ||
1345 | * expect it to have. | ||
1346 | * | ||
1347 | * We will NOT try and autoconfigure all of the resources | ||
1348 | * needed and then activate the card as we are assuming that | ||
1349 | * has already been done at boot-time using /proc/isapnp. | ||
1350 | * We shall simply try to give each active card the resources | ||
1351 | * that it wants. This is a sensible strategy for a modular | ||
1352 | * system where unused modules are unloaded regularly. | ||
1353 | * | ||
1354 | * This strategy is utterly useless if we compile the driver | ||
1355 | * into the kernel, of course. | ||
1356 | */ | ||
1357 | // printk(KERN_INFO "sscape: %s\n", card->name); | ||
1358 | |||
1359 | /* | ||
1360 | * Check that we still have room for another sound card ... | ||
1361 | */ | ||
1362 | if (sscape_cards >= SNDRV_CARDS) { | ||
1363 | printk(KERN_ERR "sscape: No room for another ALSA device\n"); | ||
1364 | return -ENOSPC; | ||
1365 | } | ||
1366 | |||
1367 | ret = -ENODEV; | ||
1368 | |||
1369 | dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL); | ||
1370 | if (dev) { | ||
1371 | struct params *this; | ||
1372 | if (!pnp_is_active(dev)) { | ||
1373 | if (pnp_activate_dev(dev) < 0) { | ||
1374 | printk(KERN_INFO "sscape: device is inactive\n"); | ||
1375 | return -EBUSY; | ||
1376 | } | ||
1377 | } | ||
1378 | /* | ||
1379 | * Read the correct parameters off the ISA PnP bus ... | ||
1380 | */ | ||
1381 | this = init_params(&sscape_params[sscape_cards], | ||
1382 | index[idx], | ||
1383 | id[idx], | ||
1384 | pnp_port_start(dev, 0), | ||
1385 | pnp_irq(dev, 0), | ||
1386 | pnp_irq(dev, 1), | ||
1387 | pnp_dma(dev, 0)); | ||
1388 | |||
1389 | /* | ||
1390 | * Do we know about this sound card already? | ||
1391 | */ | ||
1392 | if ( !is_port_known(this->port, sscape_params, sscape_cards) ) { | ||
1393 | snd_card_t *card; | ||
1394 | |||
1395 | ret = create_sscape(this, &card); | ||
1396 | if (ret < 0) | ||
1397 | return ret; | ||
1398 | snd_card_set_dev(card, &pcard->card->dev); | ||
1399 | pnp_set_card_drvdata(pcard, card); | ||
1400 | ++sscape_cards; | ||
1401 | ++idx; | ||
1402 | } | ||
1403 | } | ||
1404 | |||
1405 | return ret; | ||
1406 | } | ||
1407 | |||
1408 | static void __devexit sscape_pnp_remove(struct pnp_card_link * pcard) | ||
1409 | { | ||
1410 | snd_card_t *card = (snd_card_t *) pnp_get_card_drvdata(pcard); | ||
1411 | |||
1412 | pnp_set_card_drvdata(pcard, NULL); | ||
1413 | snd_card_disconnect(card); | ||
1414 | snd_card_free_in_thread(card); | ||
1415 | } | ||
1416 | |||
1417 | static struct pnp_card_driver sscape_pnpc_driver = { | ||
1418 | .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, | ||
1419 | .name = "sscape", | ||
1420 | .id_table = sscape_pnpids, | ||
1421 | .probe = sscape_pnp_detect, | ||
1422 | .remove = __devexit_p(sscape_pnp_remove), | ||
1423 | }; | ||
1424 | |||
1425 | #endif /* CONFIG_PNP */ | ||
1426 | |||
1427 | static int __init sscape_manual_probe(struct params *params) | ||
1428 | { | ||
1429 | int ret; | ||
1430 | unsigned i; | ||
1431 | snd_card_t *card; | ||
1432 | |||
1433 | for (i = 0; i < SNDRV_CARDS; ++i) { | ||
1434 | /* | ||
1435 | * We do NOT probe for ports. | ||
1436 | * If we're not given a port number for this | ||
1437 | * card then we completely ignore this line | ||
1438 | * of parameters. | ||
1439 | */ | ||
1440 | if (port[i] == SNDRV_AUTO_PORT) | ||
1441 | continue; | ||
1442 | |||
1443 | /* | ||
1444 | * Make sure we were given ALL of the other parameters. | ||
1445 | */ | ||
1446 | if ( (irq[i] == SNDRV_AUTO_IRQ) || | ||
1447 | (mpu_irq[i] == SNDRV_AUTO_IRQ) || | ||
1448 | (dma[i] == SNDRV_AUTO_DMA) ) { | ||
1449 | printk(KERN_INFO | ||
1450 | "sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n"); | ||
1451 | return -ENXIO; | ||
1452 | } | ||
1453 | |||
1454 | /* | ||
1455 | * This cards looks OK ... | ||
1456 | */ | ||
1457 | init_params(params, index[i], id[i], port[i], irq[i], mpu_irq[i], dma[i]); | ||
1458 | |||
1459 | ret = create_sscape(params, &card); | ||
1460 | if (ret < 0) | ||
1461 | return ret; | ||
1462 | |||
1463 | sscape_card[sscape_cards] = card; | ||
1464 | params++; | ||
1465 | sscape_cards++; | ||
1466 | } /* for */ | ||
1467 | |||
1468 | return 0; | ||
1469 | } | ||
1470 | |||
1471 | |||
1472 | static void sscape_exit(void) | ||
1473 | { | ||
1474 | unsigned i; | ||
1475 | |||
1476 | #ifdef CONFIG_PNP | ||
1477 | pnp_unregister_card_driver(&sscape_pnpc_driver); | ||
1478 | #endif | ||
1479 | for (i = 0; i < ARRAY_SIZE(sscape_card); ++i) { | ||
1480 | snd_card_free(sscape_card[i]); | ||
1481 | } /* for */ | ||
1482 | } | ||
1483 | |||
1484 | |||
1485 | static int __init sscape_init(void) | ||
1486 | { | ||
1487 | int ret; | ||
1488 | |||
1489 | /* | ||
1490 | * First check whether we were passed any parameters. | ||
1491 | * These MUST take precedence over ANY automatic way | ||
1492 | * of allocating cards, because the operator is | ||
1493 | * S-P-E-L-L-I-N-G it out for us... | ||
1494 | */ | ||
1495 | ret = sscape_manual_probe(sscape_params); | ||
1496 | if (ret < 0) { | ||
1497 | int i; | ||
1498 | for (i = 0; i < sscape_cards; ++i) | ||
1499 | snd_card_free(sscape_card[i]); | ||
1500 | return ret; | ||
1501 | } | ||
1502 | |||
1503 | #ifdef CONFIG_PNP | ||
1504 | if (sscape_cards < SNDRV_CARDS) { | ||
1505 | ret = pnp_register_card_driver(&sscape_pnpc_driver); | ||
1506 | if (ret < 0) { | ||
1507 | sscape_exit(); | ||
1508 | return ret; | ||
1509 | } | ||
1510 | } | ||
1511 | #endif | ||
1512 | |||
1513 | return 0; | ||
1514 | } | ||
1515 | |||
1516 | module_init(sscape_init); | ||
1517 | module_exit(sscape_exit); | ||