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1 | /* Analog Devices 1889 audio driver |
2 | * |
3 | * This is a driver for the AD1889 PCI audio chipset found |
4 | * on the HP PA-RISC [BCJ]-xxx0 workstations. |
5 | * |
6 | * Copyright (C) 2004-2005, Kyle McMartin <kyle@parisc-linux.org> |
7 | * Copyright (C) 2005, Thibaut Varene <varenet@parisc-linux.org> |
8 | * Based on the OSS AD1889 driver by Randolph Chung <tausq@debian.org> |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License, version 2, as |
12 | * published by the Free Software Foundation. |
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., 675 Mass Ave, Cambridge, MA 02139, USA. |
22 | * |
23 | * TODO: |
24 | * Do we need to take care of CCS register? |
25 | * Maybe we could use finer grained locking (separate locks for pb/cap)? |
26 | * Wishlist: |
27 | * Control Interface (mixer) support |
28 | * Better AC97 support (VSR...)? |
29 | * PM support |
30 | * MIDI support |
31 | * Game Port support |
32 | * SG DMA support (this will need *a lot* of work) |
33 | */ |
34 | |
35 | #include <linux/init.h> |
36 | #include <linux/pci.h> |
37 | #include <linux/dma-mapping.h> |
38 | #include <linux/slab.h> |
39 | #include <linux/interrupt.h> |
40 | #include <linux/compiler.h> |
41 | #include <linux/delay.h> |
42 | #include <linux/module.h> |
43 | |
44 | #include <sound/core.h> |
45 | #include <sound/pcm.h> |
46 | #include <sound/initval.h> |
47 | #include <sound/ac97_codec.h> |
48 | |
49 | #include <asm/io.h> |
50 | |
51 | #include "ad1889.h" |
52 | #include "ac97/ac97_id.h" |
53 | |
54 | #define AD1889_DRVVER "Version: 1.7" |
55 | |
56 | MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>, Thibaut Varene <t-bone@parisc-linux.org>"); |
57 | MODULE_DESCRIPTION("Analog Devices AD1889 ALSA sound driver"); |
58 | MODULE_LICENSE("GPL"); |
59 | MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1889}}"); |
60 | |
61 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
62 | module_param_array(index, int, NULL, 0444); |
63 | MODULE_PARM_DESC(index, "Index value for the AD1889 soundcard."); |
64 | |
65 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; |
66 | module_param_array(id, charp, NULL, 0444); |
67 | MODULE_PARM_DESC(id, "ID string for the AD1889 soundcard."); |
68 | |
69 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
70 | module_param_array(enable, bool, NULL, 0444); |
71 | MODULE_PARM_DESC(enable, "Enable AD1889 soundcard."); |
72 | |
73 | static char *ac97_quirk[SNDRV_CARDS]; |
74 | module_param_array(ac97_quirk, charp, NULL, 0444); |
75 | MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware."); |
76 | |
77 | #define DEVNAME "ad1889" |
78 | #define PFX DEVNAME ": " |
79 | |
80 | /* let's use the global sound debug interfaces */ |
81 | #define ad1889_debug(fmt, arg...) snd_printd(KERN_DEBUG fmt, ## arg) |
82 | |
83 | /* keep track of some hw registers */ |
84 | struct ad1889_register_state { |
85 | u16 reg; /* reg setup */ |
86 | u32 addr; /* dma base address */ |
87 | unsigned long size; /* DMA buffer size */ |
88 | }; |
89 | |
90 | struct snd_ad1889 { |
91 | struct snd_card *card; |
92 | struct pci_dev *pci; |
93 | |
94 | int irq; |
95 | unsigned long bar; |
96 | void __iomem *iobase; |
97 | |
98 | struct snd_ac97 *ac97; |
99 | struct snd_ac97_bus *ac97_bus; |
100 | struct snd_pcm *pcm; |
101 | struct snd_info_entry *proc; |
102 | |
103 | struct snd_pcm_substream *psubs; |
104 | struct snd_pcm_substream *csubs; |
105 | |
106 | /* playback register state */ |
107 | struct ad1889_register_state wave; |
108 | struct ad1889_register_state ramc; |
109 | |
110 | spinlock_t lock; |
111 | }; |
112 | |
113 | static inline u16 |
114 | ad1889_readw(struct snd_ad1889 *chip, unsigned reg) |
115 | { |
116 | return readw(chip->iobase + reg); |
117 | } |
118 | |
119 | static inline void |
120 | ad1889_writew(struct snd_ad1889 *chip, unsigned reg, u16 val) |
121 | { |
122 | writew(val, chip->iobase + reg); |
123 | } |
124 | |
125 | static inline u32 |
126 | ad1889_readl(struct snd_ad1889 *chip, unsigned reg) |
127 | { |
128 | return readl(chip->iobase + reg); |
129 | } |
130 | |
131 | static inline void |
132 | ad1889_writel(struct snd_ad1889 *chip, unsigned reg, u32 val) |
133 | { |
134 | writel(val, chip->iobase + reg); |
135 | } |
136 | |
137 | static inline void |
138 | ad1889_unmute(struct snd_ad1889 *chip) |
139 | { |
140 | u16 st; |
141 | st = ad1889_readw(chip, AD_DS_WADA) & |
142 | ~(AD_DS_WADA_RWAM | AD_DS_WADA_LWAM); |
143 | ad1889_writew(chip, AD_DS_WADA, st); |
144 | ad1889_readw(chip, AD_DS_WADA); |
145 | } |
146 | |
147 | static inline void |
148 | ad1889_mute(struct snd_ad1889 *chip) |
149 | { |
150 | u16 st; |
151 | st = ad1889_readw(chip, AD_DS_WADA) | AD_DS_WADA_RWAM | AD_DS_WADA_LWAM; |
152 | ad1889_writew(chip, AD_DS_WADA, st); |
153 | ad1889_readw(chip, AD_DS_WADA); |
154 | } |
155 | |
156 | static inline void |
157 | ad1889_load_adc_buffer_address(struct snd_ad1889 *chip, u32 address) |
158 | { |
159 | ad1889_writel(chip, AD_DMA_ADCBA, address); |
160 | ad1889_writel(chip, AD_DMA_ADCCA, address); |
161 | } |
162 | |
163 | static inline void |
164 | ad1889_load_adc_buffer_count(struct snd_ad1889 *chip, u32 count) |
165 | { |
166 | ad1889_writel(chip, AD_DMA_ADCBC, count); |
167 | ad1889_writel(chip, AD_DMA_ADCCC, count); |
168 | } |
169 | |
170 | static inline void |
171 | ad1889_load_adc_interrupt_count(struct snd_ad1889 *chip, u32 count) |
172 | { |
173 | ad1889_writel(chip, AD_DMA_ADCIB, count); |
174 | ad1889_writel(chip, AD_DMA_ADCIC, count); |
175 | } |
176 | |
177 | static inline void |
178 | ad1889_load_wave_buffer_address(struct snd_ad1889 *chip, u32 address) |
179 | { |
180 | ad1889_writel(chip, AD_DMA_WAVBA, address); |
181 | ad1889_writel(chip, AD_DMA_WAVCA, address); |
182 | } |
183 | |
184 | static inline void |
185 | ad1889_load_wave_buffer_count(struct snd_ad1889 *chip, u32 count) |
186 | { |
187 | ad1889_writel(chip, AD_DMA_WAVBC, count); |
188 | ad1889_writel(chip, AD_DMA_WAVCC, count); |
189 | } |
190 | |
191 | static inline void |
192 | ad1889_load_wave_interrupt_count(struct snd_ad1889 *chip, u32 count) |
193 | { |
194 | ad1889_writel(chip, AD_DMA_WAVIB, count); |
195 | ad1889_writel(chip, AD_DMA_WAVIC, count); |
196 | } |
197 | |
198 | static void |
199 | ad1889_channel_reset(struct snd_ad1889 *chip, unsigned int channel) |
200 | { |
201 | u16 reg; |
202 | |
203 | if (channel & AD_CHAN_WAV) { |
204 | /* Disable wave channel */ |
205 | reg = ad1889_readw(chip, AD_DS_WSMC) & ~AD_DS_WSMC_WAEN; |
206 | ad1889_writew(chip, AD_DS_WSMC, reg); |
207 | chip->wave.reg = reg; |
208 | |
209 | /* disable IRQs */ |
210 | reg = ad1889_readw(chip, AD_DMA_WAV); |
211 | reg &= AD_DMA_IM_DIS; |
212 | reg &= ~AD_DMA_LOOP; |
213 | ad1889_writew(chip, AD_DMA_WAV, reg); |
214 | |
215 | /* clear IRQ and address counters and pointers */ |
216 | ad1889_load_wave_buffer_address(chip, 0x0); |
217 | ad1889_load_wave_buffer_count(chip, 0x0); |
218 | ad1889_load_wave_interrupt_count(chip, 0x0); |
219 | |
220 | /* flush */ |
221 | ad1889_readw(chip, AD_DMA_WAV); |
222 | } |
223 | |
224 | if (channel & AD_CHAN_ADC) { |
225 | /* Disable ADC channel */ |
226 | reg = ad1889_readw(chip, AD_DS_RAMC) & ~AD_DS_RAMC_ADEN; |
227 | ad1889_writew(chip, AD_DS_RAMC, reg); |
228 | chip->ramc.reg = reg; |
229 | |
230 | reg = ad1889_readw(chip, AD_DMA_ADC); |
231 | reg &= AD_DMA_IM_DIS; |
232 | reg &= ~AD_DMA_LOOP; |
233 | ad1889_writew(chip, AD_DMA_ADC, reg); |
234 | |
235 | ad1889_load_adc_buffer_address(chip, 0x0); |
236 | ad1889_load_adc_buffer_count(chip, 0x0); |
237 | ad1889_load_adc_interrupt_count(chip, 0x0); |
238 | |
239 | /* flush */ |
240 | ad1889_readw(chip, AD_DMA_ADC); |
241 | } |
242 | } |
243 | |
244 | static u16 |
245 | snd_ad1889_ac97_read(struct snd_ac97 *ac97, unsigned short reg) |
246 | { |
247 | struct snd_ad1889 *chip = ac97->private_data; |
248 | return ad1889_readw(chip, AD_AC97_BASE + reg); |
249 | } |
250 | |
251 | static void |
252 | snd_ad1889_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) |
253 | { |
254 | struct snd_ad1889 *chip = ac97->private_data; |
255 | ad1889_writew(chip, AD_AC97_BASE + reg, val); |
256 | } |
257 | |
258 | static int |
259 | snd_ad1889_ac97_ready(struct snd_ad1889 *chip) |
260 | { |
261 | int retry = 400; /* average needs 352 msec */ |
262 | |
263 | while (!(ad1889_readw(chip, AD_AC97_ACIC) & AD_AC97_ACIC_ACRDY) |
264 | && --retry) |
265 | mdelay(1); |
266 | if (!retry) { |
267 | snd_printk(KERN_ERR PFX "[%s] Link is not ready.\n", |
268 | __func__); |
269 | return -EIO; |
270 | } |
271 | ad1889_debug("[%s] ready after %d ms\n", __func__, 400 - retry); |
272 | |
273 | return 0; |
274 | } |
275 | |
276 | static int |
277 | snd_ad1889_hw_params(struct snd_pcm_substream *substream, |
278 | struct snd_pcm_hw_params *hw_params) |
279 | { |
280 | return snd_pcm_lib_malloc_pages(substream, |
281 | params_buffer_bytes(hw_params)); |
282 | } |
283 | |
284 | static int |
285 | snd_ad1889_hw_free(struct snd_pcm_substream *substream) |
286 | { |
287 | return snd_pcm_lib_free_pages(substream); |
288 | } |
289 | |
290 | static struct snd_pcm_hardware snd_ad1889_playback_hw = { |
291 | .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
292 | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER, |
293 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
294 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, |
295 | .rate_min = 8000, /* docs say 7000, but we're lazy */ |
296 | .rate_max = 48000, |
297 | .channels_min = 1, |
298 | .channels_max = 2, |
299 | .buffer_bytes_max = BUFFER_BYTES_MAX, |
300 | .period_bytes_min = PERIOD_BYTES_MIN, |
301 | .period_bytes_max = PERIOD_BYTES_MAX, |
302 | .periods_min = PERIODS_MIN, |
303 | .periods_max = PERIODS_MAX, |
304 | /*.fifo_size = 0,*/ |
305 | }; |
306 | |
307 | static struct snd_pcm_hardware snd_ad1889_capture_hw = { |
308 | .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
309 | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER, |
310 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
311 | .rates = SNDRV_PCM_RATE_48000, |
312 | .rate_min = 48000, /* docs say we could to VSR, but we're lazy */ |
313 | .rate_max = 48000, |
314 | .channels_min = 1, |
315 | .channels_max = 2, |
316 | .buffer_bytes_max = BUFFER_BYTES_MAX, |
317 | .period_bytes_min = PERIOD_BYTES_MIN, |
318 | .period_bytes_max = PERIOD_BYTES_MAX, |
319 | .periods_min = PERIODS_MIN, |
320 | .periods_max = PERIODS_MAX, |
321 | /*.fifo_size = 0,*/ |
322 | }; |
323 | |
324 | static int |
325 | snd_ad1889_playback_open(struct snd_pcm_substream *ss) |
326 | { |
327 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
328 | struct snd_pcm_runtime *rt = ss->runtime; |
329 | |
330 | chip->psubs = ss; |
331 | rt->hw = snd_ad1889_playback_hw; |
332 | |
333 | return 0; |
334 | } |
335 | |
336 | static int |
337 | snd_ad1889_capture_open(struct snd_pcm_substream *ss) |
338 | { |
339 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
340 | struct snd_pcm_runtime *rt = ss->runtime; |
341 | |
342 | chip->csubs = ss; |
343 | rt->hw = snd_ad1889_capture_hw; |
344 | |
345 | return 0; |
346 | } |
347 | |
348 | static int |
349 | snd_ad1889_playback_close(struct snd_pcm_substream *ss) |
350 | { |
351 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
352 | chip->psubs = NULL; |
353 | return 0; |
354 | } |
355 | |
356 | static int |
357 | snd_ad1889_capture_close(struct snd_pcm_substream *ss) |
358 | { |
359 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
360 | chip->csubs = NULL; |
361 | return 0; |
362 | } |
363 | |
364 | static int |
365 | snd_ad1889_playback_prepare(struct snd_pcm_substream *ss) |
366 | { |
367 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
368 | struct snd_pcm_runtime *rt = ss->runtime; |
369 | unsigned int size = snd_pcm_lib_buffer_bytes(ss); |
370 | unsigned int count = snd_pcm_lib_period_bytes(ss); |
371 | u16 reg; |
372 | |
373 | ad1889_channel_reset(chip, AD_CHAN_WAV); |
374 | |
375 | reg = ad1889_readw(chip, AD_DS_WSMC); |
376 | |
377 | /* Mask out 16-bit / Stereo */ |
378 | reg &= ~(AD_DS_WSMC_WA16 | AD_DS_WSMC_WAST); |
379 | |
380 | if (snd_pcm_format_width(rt->format) == 16) |
381 | reg |= AD_DS_WSMC_WA16; |
382 | |
383 | if (rt->channels > 1) |
384 | reg |= AD_DS_WSMC_WAST; |
385 | |
386 | /* let's make sure we don't clobber ourselves */ |
387 | spin_lock_irq(&chip->lock); |
388 | |
389 | chip->wave.size = size; |
390 | chip->wave.reg = reg; |
391 | chip->wave.addr = rt->dma_addr; |
392 | |
393 | ad1889_writew(chip, AD_DS_WSMC, chip->wave.reg); |
394 | |
395 | /* Set sample rates on the codec */ |
396 | ad1889_writew(chip, AD_DS_WAS, rt->rate); |
397 | |
398 | /* Set up DMA */ |
399 | ad1889_load_wave_buffer_address(chip, chip->wave.addr); |
400 | ad1889_load_wave_buffer_count(chip, size); |
401 | ad1889_load_wave_interrupt_count(chip, count); |
402 | |
403 | /* writes flush */ |
404 | ad1889_readw(chip, AD_DS_WSMC); |
405 | |
406 | spin_unlock_irq(&chip->lock); |
407 | |
408 | ad1889_debug("prepare playback: addr = 0x%x, count = %u, " |
409 | "size = %u, reg = 0x%x, rate = %u\n", chip->wave.addr, |
410 | count, size, reg, rt->rate); |
411 | return 0; |
412 | } |
413 | |
414 | static int |
415 | snd_ad1889_capture_prepare(struct snd_pcm_substream *ss) |
416 | { |
417 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
418 | struct snd_pcm_runtime *rt = ss->runtime; |
419 | unsigned int size = snd_pcm_lib_buffer_bytes(ss); |
420 | unsigned int count = snd_pcm_lib_period_bytes(ss); |
421 | u16 reg; |
422 | |
423 | ad1889_channel_reset(chip, AD_CHAN_ADC); |
424 | |
425 | reg = ad1889_readw(chip, AD_DS_RAMC); |
426 | |
427 | /* Mask out 16-bit / Stereo */ |
428 | reg &= ~(AD_DS_RAMC_AD16 | AD_DS_RAMC_ADST); |
429 | |
430 | if (snd_pcm_format_width(rt->format) == 16) |
431 | reg |= AD_DS_RAMC_AD16; |
432 | |
433 | if (rt->channels > 1) |
434 | reg |= AD_DS_RAMC_ADST; |
435 | |
436 | /* let's make sure we don't clobber ourselves */ |
437 | spin_lock_irq(&chip->lock); |
438 | |
439 | chip->ramc.size = size; |
440 | chip->ramc.reg = reg; |
441 | chip->ramc.addr = rt->dma_addr; |
442 | |
443 | ad1889_writew(chip, AD_DS_RAMC, chip->ramc.reg); |
444 | |
445 | /* Set up DMA */ |
446 | ad1889_load_adc_buffer_address(chip, chip->ramc.addr); |
447 | ad1889_load_adc_buffer_count(chip, size); |
448 | ad1889_load_adc_interrupt_count(chip, count); |
449 | |
450 | /* writes flush */ |
451 | ad1889_readw(chip, AD_DS_RAMC); |
452 | |
453 | spin_unlock_irq(&chip->lock); |
454 | |
455 | ad1889_debug("prepare capture: addr = 0x%x, count = %u, " |
456 | "size = %u, reg = 0x%x, rate = %u\n", chip->ramc.addr, |
457 | count, size, reg, rt->rate); |
458 | return 0; |
459 | } |
460 | |
461 | /* this is called in atomic context with IRQ disabled. |
462 | Must be as fast as possible and not sleep. |
463 | DMA should be *triggered* by this call. |
464 | The WSMC "WAEN" bit triggers DMA Wave On/Off */ |
465 | static int |
466 | snd_ad1889_playback_trigger(struct snd_pcm_substream *ss, int cmd) |
467 | { |
468 | u16 wsmc; |
469 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
470 | |
471 | wsmc = ad1889_readw(chip, AD_DS_WSMC); |
472 | |
473 | switch (cmd) { |
474 | case SNDRV_PCM_TRIGGER_START: |
475 | /* enable DMA loop & interrupts */ |
476 | ad1889_writew(chip, AD_DMA_WAV, AD_DMA_LOOP | AD_DMA_IM_CNT); |
477 | wsmc |= AD_DS_WSMC_WAEN; |
478 | /* 1 to clear CHSS bit */ |
479 | ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_WAVS); |
480 | ad1889_unmute(chip); |
481 | break; |
482 | case SNDRV_PCM_TRIGGER_STOP: |
483 | ad1889_mute(chip); |
484 | wsmc &= ~AD_DS_WSMC_WAEN; |
485 | break; |
486 | default: |
487 | snd_BUG(); |
488 | return -EINVAL; |
489 | } |
490 | |
491 | chip->wave.reg = wsmc; |
492 | ad1889_writew(chip, AD_DS_WSMC, wsmc); |
493 | ad1889_readw(chip, AD_DS_WSMC); /* flush */ |
494 | |
495 | /* reset the chip when STOP - will disable IRQs */ |
496 | if (cmd == SNDRV_PCM_TRIGGER_STOP) |
497 | ad1889_channel_reset(chip, AD_CHAN_WAV); |
498 | |
499 | return 0; |
500 | } |
501 | |
502 | /* this is called in atomic context with IRQ disabled. |
503 | Must be as fast as possible and not sleep. |
504 | DMA should be *triggered* by this call. |
505 | The RAMC "ADEN" bit triggers DMA ADC On/Off */ |
506 | static int |
507 | snd_ad1889_capture_trigger(struct snd_pcm_substream *ss, int cmd) |
508 | { |
509 | u16 ramc; |
510 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
511 | |
512 | ramc = ad1889_readw(chip, AD_DS_RAMC); |
513 | |
514 | switch (cmd) { |
515 | case SNDRV_PCM_TRIGGER_START: |
516 | /* enable DMA loop & interrupts */ |
517 | ad1889_writew(chip, AD_DMA_ADC, AD_DMA_LOOP | AD_DMA_IM_CNT); |
518 | ramc |= AD_DS_RAMC_ADEN; |
519 | /* 1 to clear CHSS bit */ |
520 | ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_ADCS); |
521 | break; |
522 | case SNDRV_PCM_TRIGGER_STOP: |
523 | ramc &= ~AD_DS_RAMC_ADEN; |
524 | break; |
525 | default: |
526 | return -EINVAL; |
527 | } |
528 | |
529 | chip->ramc.reg = ramc; |
530 | ad1889_writew(chip, AD_DS_RAMC, ramc); |
531 | ad1889_readw(chip, AD_DS_RAMC); /* flush */ |
532 | |
533 | /* reset the chip when STOP - will disable IRQs */ |
534 | if (cmd == SNDRV_PCM_TRIGGER_STOP) |
535 | ad1889_channel_reset(chip, AD_CHAN_ADC); |
536 | |
537 | return 0; |
538 | } |
539 | |
540 | /* Called in atomic context with IRQ disabled */ |
541 | static snd_pcm_uframes_t |
542 | snd_ad1889_playback_pointer(struct snd_pcm_substream *ss) |
543 | { |
544 | size_t ptr = 0; |
545 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
546 | |
547 | if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN))) |
548 | return 0; |
549 | |
550 | ptr = ad1889_readl(chip, AD_DMA_WAVCA); |
551 | ptr -= chip->wave.addr; |
552 | |
553 | if (snd_BUG_ON(ptr >= chip->wave.size)) |
554 | return 0; |
555 | |
556 | return bytes_to_frames(ss->runtime, ptr); |
557 | } |
558 | |
559 | /* Called in atomic context with IRQ disabled */ |
560 | static snd_pcm_uframes_t |
561 | snd_ad1889_capture_pointer(struct snd_pcm_substream *ss) |
562 | { |
563 | size_t ptr = 0; |
564 | struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); |
565 | |
566 | if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN))) |
567 | return 0; |
568 | |
569 | ptr = ad1889_readl(chip, AD_DMA_ADCCA); |
570 | ptr -= chip->ramc.addr; |
571 | |
572 | if (snd_BUG_ON(ptr >= chip->ramc.size)) |
573 | return 0; |
574 | |
575 | return bytes_to_frames(ss->runtime, ptr); |
576 | } |
577 | |
578 | static struct snd_pcm_ops snd_ad1889_playback_ops = { |
579 | .open = snd_ad1889_playback_open, |
580 | .close = snd_ad1889_playback_close, |
581 | .ioctl = snd_pcm_lib_ioctl, |
582 | .hw_params = snd_ad1889_hw_params, |
583 | .hw_free = snd_ad1889_hw_free, |
584 | .prepare = snd_ad1889_playback_prepare, |
585 | .trigger = snd_ad1889_playback_trigger, |
586 | .pointer = snd_ad1889_playback_pointer, |
587 | }; |
588 | |
589 | static struct snd_pcm_ops snd_ad1889_capture_ops = { |
590 | .open = snd_ad1889_capture_open, |
591 | .close = snd_ad1889_capture_close, |
592 | .ioctl = snd_pcm_lib_ioctl, |
593 | .hw_params = snd_ad1889_hw_params, |
594 | .hw_free = snd_ad1889_hw_free, |
595 | .prepare = snd_ad1889_capture_prepare, |
596 | .trigger = snd_ad1889_capture_trigger, |
597 | .pointer = snd_ad1889_capture_pointer, |
598 | }; |
599 | |
600 | static irqreturn_t |
601 | snd_ad1889_interrupt(int irq, void *dev_id) |
602 | { |
603 | unsigned long st; |
604 | struct snd_ad1889 *chip = dev_id; |
605 | |
606 | st = ad1889_readl(chip, AD_DMA_DISR); |
607 | |
608 | /* clear ISR */ |
609 | ad1889_writel(chip, AD_DMA_DISR, st); |
610 | |
611 | st &= AD_INTR_MASK; |
612 | |
613 | if (unlikely(!st)) |
614 | return IRQ_NONE; |
615 | |
616 | if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI)) |
617 | ad1889_debug("Unexpected master or target abort interrupt!\n"); |
618 | |
619 | if ((st & AD_DMA_DISR_WAVI) && chip->psubs) |
620 | snd_pcm_period_elapsed(chip->psubs); |
621 | if ((st & AD_DMA_DISR_ADCI) && chip->csubs) |
622 | snd_pcm_period_elapsed(chip->csubs); |
623 | |
624 | return IRQ_HANDLED; |
625 | } |
626 | |
627 | static int |
628 | snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device, struct snd_pcm **rpcm) |
629 | { |
630 | int err; |
631 | struct snd_pcm *pcm; |
632 | |
633 | if (rpcm) |
634 | *rpcm = NULL; |
635 | |
636 | err = snd_pcm_new(chip->card, chip->card->driver, device, 1, 1, &pcm); |
637 | if (err < 0) |
638 | return err; |
639 | |
640 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
641 | &snd_ad1889_playback_ops); |
642 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, |
643 | &snd_ad1889_capture_ops); |
644 | |
645 | pcm->private_data = chip; |
646 | pcm->info_flags = 0; |
647 | strcpy(pcm->name, chip->card->shortname); |
648 | |
649 | chip->pcm = pcm; |
650 | chip->psubs = NULL; |
651 | chip->csubs = NULL; |
652 | |
653 | err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, |
654 | snd_dma_pci_data(chip->pci), |
655 | BUFFER_BYTES_MAX / 2, |
656 | BUFFER_BYTES_MAX); |
657 | |
658 | if (err < 0) { |
659 | snd_printk(KERN_ERR PFX "buffer allocation error: %d\n", err); |
660 | return err; |
661 | } |
662 | |
663 | if (rpcm) |
664 | *rpcm = pcm; |
665 | |
666 | return 0; |
667 | } |
668 | |
669 | static void |
670 | snd_ad1889_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
671 | { |
672 | struct snd_ad1889 *chip = entry->private_data; |
673 | u16 reg; |
674 | int tmp; |
675 | |
676 | reg = ad1889_readw(chip, AD_DS_WSMC); |
677 | snd_iprintf(buffer, "Wave output: %s\n", |
678 | (reg & AD_DS_WSMC_WAEN) ? "enabled" : "disabled"); |
679 | snd_iprintf(buffer, "Wave Channels: %s\n", |
680 | (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); |
681 | snd_iprintf(buffer, "Wave Quality: %d-bit linear\n", |
682 | (reg & AD_DS_WSMC_WA16) ? 16 : 8); |
683 | |
684 | /* WARQ is at offset 12 */ |
685 | tmp = (reg & AD_DS_WSMC_WARQ) ? |
686 | (((reg & AD_DS_WSMC_WARQ >> 12) & 0x01) ? 12 : 18) : 4; |
687 | tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1; |
688 | |
689 | snd_iprintf(buffer, "Wave FIFO: %d %s words\n\n", tmp, |
690 | (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); |
691 | |
692 | |
693 | snd_iprintf(buffer, "Synthesis output: %s\n", |
694 | reg & AD_DS_WSMC_SYEN ? "enabled" : "disabled"); |
695 | |
696 | /* SYRQ is at offset 4 */ |
697 | tmp = (reg & AD_DS_WSMC_SYRQ) ? |
698 | (((reg & AD_DS_WSMC_SYRQ >> 4) & 0x01) ? 12 : 18) : 4; |
699 | tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1; |
700 | |
701 | snd_iprintf(buffer, "Synthesis FIFO: %d %s words\n\n", tmp, |
702 | (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); |
703 | |
704 | reg = ad1889_readw(chip, AD_DS_RAMC); |
705 | snd_iprintf(buffer, "ADC input: %s\n", |
706 | (reg & AD_DS_RAMC_ADEN) ? "enabled" : "disabled"); |
707 | snd_iprintf(buffer, "ADC Channels: %s\n", |
708 | (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono"); |
709 | snd_iprintf(buffer, "ADC Quality: %d-bit linear\n", |
710 | (reg & AD_DS_RAMC_AD16) ? 16 : 8); |
711 | |
712 | /* ACRQ is at offset 4 */ |
713 | tmp = (reg & AD_DS_RAMC_ACRQ) ? |
714 | (((reg & AD_DS_RAMC_ACRQ >> 4) & 0x01) ? 12 : 18) : 4; |
715 | tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1; |
716 | |
717 | snd_iprintf(buffer, "ADC FIFO: %d %s words\n\n", tmp, |
718 | (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono"); |
719 | |
720 | snd_iprintf(buffer, "Resampler input: %s\n", |
721 | reg & AD_DS_RAMC_REEN ? "enabled" : "disabled"); |
722 | |
723 | /* RERQ is at offset 12 */ |
724 | tmp = (reg & AD_DS_RAMC_RERQ) ? |
725 | (((reg & AD_DS_RAMC_RERQ >> 12) & 0x01) ? 12 : 18) : 4; |
726 | tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1; |
727 | |
728 | snd_iprintf(buffer, "Resampler FIFO: %d %s words\n\n", tmp, |
729 | (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); |
730 | |
731 | |
732 | /* doc says LSB represents -1.5dB, but the max value (-94.5dB) |
733 | suggests that LSB is -3dB, which is more coherent with the logarithmic |
734 | nature of the dB scale */ |
735 | reg = ad1889_readw(chip, AD_DS_WADA); |
736 | snd_iprintf(buffer, "Left: %s, -%d dB\n", |
737 | (reg & AD_DS_WADA_LWAM) ? "mute" : "unmute", |
738 | ((reg & AD_DS_WADA_LWAA) >> 8) * 3); |
739 | reg = ad1889_readw(chip, AD_DS_WADA); |
740 | snd_iprintf(buffer, "Right: %s, -%d dB\n", |
741 | (reg & AD_DS_WADA_RWAM) ? "mute" : "unmute", |
742 | ((reg & AD_DS_WADA_RWAA) >> 8) * 3); |
743 | |
744 | reg = ad1889_readw(chip, AD_DS_WAS); |
745 | snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg); |
746 | reg = ad1889_readw(chip, AD_DS_RES); |
747 | snd_iprintf(buffer, "Resampler samplerate: %u Hz\n", reg); |
748 | } |
749 | |
750 | static void |
751 | snd_ad1889_proc_init(struct snd_ad1889 *chip) |
752 | { |
753 | struct snd_info_entry *entry; |
754 | |
755 | if (!snd_card_proc_new(chip->card, chip->card->driver, &entry)) |
756 | snd_info_set_text_ops(entry, chip, snd_ad1889_proc_read); |
757 | } |
758 | |
759 | static struct ac97_quirk ac97_quirks[] = { |
760 | { |
761 | .subvendor = 0x11d4, /* AD */ |
762 | .subdevice = 0x1889, /* AD1889 */ |
763 | .codec_id = AC97_ID_AD1819, |
764 | .name = "AD1889", |
765 | .type = AC97_TUNE_HP_ONLY |
766 | }, |
767 | { } /* terminator */ |
768 | }; |
769 | |
770 | static void |
771 | snd_ad1889_ac97_xinit(struct snd_ad1889 *chip) |
772 | { |
773 | u16 reg; |
774 | |
775 | reg = ad1889_readw(chip, AD_AC97_ACIC); |
776 | reg |= AD_AC97_ACIC_ACRD; /* Reset Disable */ |
777 | ad1889_writew(chip, AD_AC97_ACIC, reg); |
778 | ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */ |
779 | udelay(10); |
780 | /* Interface Enable */ |
781 | reg |= AD_AC97_ACIC_ACIE; |
782 | ad1889_writew(chip, AD_AC97_ACIC, reg); |
783 | |
784 | snd_ad1889_ac97_ready(chip); |
785 | |
786 | /* Audio Stream Output | Variable Sample Rate Mode */ |
787 | reg = ad1889_readw(chip, AD_AC97_ACIC); |
788 | reg |= AD_AC97_ACIC_ASOE | AD_AC97_ACIC_VSRM; |
789 | ad1889_writew(chip, AD_AC97_ACIC, reg); |
790 | ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */ |
791 | |
792 | } |
793 | |
794 | static void |
795 | snd_ad1889_ac97_bus_free(struct snd_ac97_bus *bus) |
796 | { |
797 | struct snd_ad1889 *chip = bus->private_data; |
798 | chip->ac97_bus = NULL; |
799 | } |
800 | |
801 | static void |
802 | snd_ad1889_ac97_free(struct snd_ac97 *ac97) |
803 | { |
804 | struct snd_ad1889 *chip = ac97->private_data; |
805 | chip->ac97 = NULL; |
806 | } |
807 | |
808 | static int |
809 | snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override) |
810 | { |
811 | int err; |
812 | struct snd_ac97_template ac97; |
813 | static struct snd_ac97_bus_ops ops = { |
814 | .write = snd_ad1889_ac97_write, |
815 | .read = snd_ad1889_ac97_read, |
816 | }; |
817 | |
818 | /* doing that here, it works. */ |
819 | snd_ad1889_ac97_xinit(chip); |
820 | |
821 | err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus); |
822 | if (err < 0) |
823 | return err; |
824 | |
825 | chip->ac97_bus->private_free = snd_ad1889_ac97_bus_free; |
826 | |
827 | memset(&ac97, 0, sizeof(ac97)); |
828 | ac97.private_data = chip; |
829 | ac97.private_free = snd_ad1889_ac97_free; |
830 | ac97.pci = chip->pci; |
831 | |
832 | err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97); |
833 | if (err < 0) |
834 | return err; |
835 | |
836 | snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override); |
837 | |
838 | return 0; |
839 | } |
840 | |
841 | static int |
842 | snd_ad1889_free(struct snd_ad1889 *chip) |
843 | { |
844 | if (chip->irq < 0) |
845 | goto skip_hw; |
846 | |
847 | spin_lock_irq(&chip->lock); |
848 | |
849 | ad1889_mute(chip); |
850 | |
851 | /* Turn off interrupt on count and zero DMA registers */ |
852 | ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC); |
853 | |
854 | /* clear DISR. If we don't, we'd better jump off the Eiffel Tower */ |
855 | ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI); |
856 | ad1889_readl(chip, AD_DMA_DISR); /* flush, dammit! */ |
857 | |
858 | spin_unlock_irq(&chip->lock); |
859 | |
860 | if (chip->irq >= 0) |
861 | free_irq(chip->irq, chip); |
862 | |
863 | skip_hw: |
864 | if (chip->iobase) |
865 | iounmap(chip->iobase); |
866 | |
867 | pci_release_regions(chip->pci); |
868 | pci_disable_device(chip->pci); |
869 | |
870 | kfree(chip); |
871 | return 0; |
872 | } |
873 | |
874 | static int |
875 | snd_ad1889_dev_free(struct snd_device *device) |
876 | { |
877 | struct snd_ad1889 *chip = device->device_data; |
878 | return snd_ad1889_free(chip); |
879 | } |
880 | |
881 | static int |
882 | snd_ad1889_init(struct snd_ad1889 *chip) |
883 | { |
884 | ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */ |
885 | ad1889_readw(chip, AD_DS_CCS); /* flush posted write */ |
886 | |
887 | mdelay(10); |
888 | |
889 | /* enable Master and Target abort interrupts */ |
890 | ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE); |
891 | |
892 | return 0; |
893 | } |
894 | |
895 | static int |
896 | snd_ad1889_create(struct snd_card *card, |
897 | struct pci_dev *pci, |
898 | struct snd_ad1889 **rchip) |
899 | { |
900 | int err; |
901 | |
902 | struct snd_ad1889 *chip; |
903 | static struct snd_device_ops ops = { |
904 | .dev_free = snd_ad1889_dev_free, |
905 | }; |
906 | |
907 | *rchip = NULL; |
908 | |
909 | if ((err = pci_enable_device(pci)) < 0) |
910 | return err; |
911 | |
912 | /* check PCI availability (32bit DMA) */ |
913 | if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 || |
914 | pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) { |
915 | printk(KERN_ERR PFX "error setting 32-bit DMA mask.\n"); |
916 | pci_disable_device(pci); |
917 | return -ENXIO; |
918 | } |
919 | |
920 | /* allocate chip specific data with zero-filled memory */ |
921 | if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { |
922 | pci_disable_device(pci); |
923 | return -ENOMEM; |
924 | } |
925 | |
926 | chip->card = card; |
927 | card->private_data = chip; |
928 | chip->pci = pci; |
929 | chip->irq = -1; |
930 | |
931 | /* (1) PCI resource allocation */ |
932 | if ((err = pci_request_regions(pci, card->driver)) < 0) |
933 | goto free_and_ret; |
934 | |
935 | chip->bar = pci_resource_start(pci, 0); |
936 | chip->iobase = pci_ioremap_bar(pci, 0); |
937 | if (chip->iobase == NULL) { |
938 | printk(KERN_ERR PFX "unable to reserve region.\n"); |
939 | err = -EBUSY; |
940 | goto free_and_ret; |
941 | } |
942 | |
943 | pci_set_master(pci); |
944 | |
945 | spin_lock_init(&chip->lock); /* only now can we call ad1889_free */ |
946 | |
947 | if (request_irq(pci->irq, snd_ad1889_interrupt, |
948 | IRQF_SHARED, KBUILD_MODNAME, chip)) { |
949 | printk(KERN_ERR PFX "cannot obtain IRQ %d\n", pci->irq); |
950 | snd_ad1889_free(chip); |
951 | return -EBUSY; |
952 | } |
953 | |
954 | chip->irq = pci->irq; |
955 | synchronize_irq(chip->irq); |
956 | |
957 | /* (2) initialization of the chip hardware */ |
958 | if ((err = snd_ad1889_init(chip)) < 0) { |
959 | snd_ad1889_free(chip); |
960 | return err; |
961 | } |
962 | |
963 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { |
964 | snd_ad1889_free(chip); |
965 | return err; |
966 | } |
967 | |
968 | snd_card_set_dev(card, &pci->dev); |
969 | |
970 | *rchip = chip; |
971 | |
972 | return 0; |
973 | |
974 | free_and_ret: |
975 | kfree(chip); |
976 | pci_disable_device(pci); |
977 | |
978 | return err; |
979 | } |
980 | |
981 | static int |
982 | snd_ad1889_probe(struct pci_dev *pci, |
983 | const struct pci_device_id *pci_id) |
984 | { |
985 | int err; |
986 | static int devno; |
987 | struct snd_card *card; |
988 | struct snd_ad1889 *chip; |
989 | |
990 | /* (1) */ |
991 | if (devno >= SNDRV_CARDS) |
992 | return -ENODEV; |
993 | if (!enable[devno]) { |
994 | devno++; |
995 | return -ENOENT; |
996 | } |
997 | |
998 | /* (2) */ |
999 | err = snd_card_create(index[devno], id[devno], THIS_MODULE, 0, &card); |
1000 | /* XXX REVISIT: we can probably allocate chip in this call */ |
1001 | if (err < 0) |
1002 | return err; |
1003 | |
1004 | strcpy(card->driver, "AD1889"); |
1005 | strcpy(card->shortname, "Analog Devices AD1889"); |
1006 | |
1007 | /* (3) */ |
1008 | err = snd_ad1889_create(card, pci, &chip); |
1009 | if (err < 0) |
1010 | goto free_and_ret; |
1011 | |
1012 | /* (4) */ |
1013 | sprintf(card->longname, "%s at 0x%lx irq %i", |
1014 | card->shortname, chip->bar, chip->irq); |
1015 | |
1016 | /* (5) */ |
1017 | /* register AC97 mixer */ |
1018 | err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]); |
1019 | if (err < 0) |
1020 | goto free_and_ret; |
1021 | |
1022 | err = snd_ad1889_pcm_init(chip, 0, NULL); |
1023 | if (err < 0) |
1024 | goto free_and_ret; |
1025 | |
1026 | /* register proc interface */ |
1027 | snd_ad1889_proc_init(chip); |
1028 | |
1029 | /* (6) */ |
1030 | err = snd_card_register(card); |
1031 | if (err < 0) |
1032 | goto free_and_ret; |
1033 | |
1034 | /* (7) */ |
1035 | pci_set_drvdata(pci, card); |
1036 | |
1037 | devno++; |
1038 | return 0; |
1039 | |
1040 | free_and_ret: |
1041 | snd_card_free(card); |
1042 | return err; |
1043 | } |
1044 | |
1045 | static void |
1046 | snd_ad1889_remove(struct pci_dev *pci) |
1047 | { |
1048 | snd_card_free(pci_get_drvdata(pci)); |
1049 | pci_set_drvdata(pci, NULL); |
1050 | } |
1051 | |
1052 | static DEFINE_PCI_DEVICE_TABLE(snd_ad1889_ids) = { |
1053 | { PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) }, |
1054 | { 0, }, |
1055 | }; |
1056 | MODULE_DEVICE_TABLE(pci, snd_ad1889_ids); |
1057 | |
1058 | static struct pci_driver ad1889_pci_driver = { |
1059 | .name = KBUILD_MODNAME, |
1060 | .id_table = snd_ad1889_ids, |
1061 | .probe = snd_ad1889_probe, |
1062 | .remove = snd_ad1889_remove, |
1063 | }; |
1064 | |
1065 | module_pci_driver(ad1889_pci_driver); |
1066 |
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Tags:
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