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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * C-Media CMI8788 driver - main driver module
4 *
5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
6 */
7
8#include <linux/delay.h>
9#include <linux/interrupt.h>
10#include <linux/mutex.h>
11#include <linux/pci.h>
12#include <linux/slab.h>
13#include <linux/module.h>
14#include <sound/ac97_codec.h>
15#include <sound/asoundef.h>
16#include <sound/core.h>
17#include <sound/info.h>
18#include <sound/mpu401.h>
19#include <sound/pcm.h>
20#include "oxygen.h"
21#include "cm9780.h"
22
23MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
24MODULE_DESCRIPTION("C-Media CMI8788 helper library");
25MODULE_LICENSE("GPL v2");
26
27#define DRIVER "oxygen"
28
29static inline int oxygen_uart_input_ready(struct oxygen *chip)
30{
31 return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY);
32}
33
34static void oxygen_read_uart(struct oxygen *chip)
35{
36 if (unlikely(!oxygen_uart_input_ready(chip))) {
37 /* no data, but read it anyway to clear the interrupt */
38 oxygen_read8(chip, OXYGEN_MPU401);
39 return;
40 }
41 do {
42 u8 data = oxygen_read8(chip, OXYGEN_MPU401);
43 if (data == MPU401_ACK)
44 continue;
45 if (chip->uart_input_count >= ARRAY_SIZE(chip->uart_input))
46 chip->uart_input_count = 0;
47 chip->uart_input[chip->uart_input_count++] = data;
48 } while (oxygen_uart_input_ready(chip));
49 if (chip->model.uart_input)
50 chip->model.uart_input(chip);
51}
52
53static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
54{
55 struct oxygen *chip = dev_id;
56 unsigned int status, clear, elapsed_streams, i;
57
58 status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
59 if (!status)
60 return IRQ_NONE;
61
62 spin_lock(&chip->reg_lock);
63
64 clear = status & (OXYGEN_CHANNEL_A |
65 OXYGEN_CHANNEL_B |
66 OXYGEN_CHANNEL_C |
67 OXYGEN_CHANNEL_SPDIF |
68 OXYGEN_CHANNEL_MULTICH |
69 OXYGEN_CHANNEL_AC97 |
70 OXYGEN_INT_SPDIF_IN_DETECT |
71 OXYGEN_INT_GPIO |
72 OXYGEN_INT_AC97);
73 if (clear) {
74 if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
75 chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
76 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
77 chip->interrupt_mask & ~clear);
78 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
79 chip->interrupt_mask);
80 }
81
82 elapsed_streams = status & chip->pcm_running;
83
84 spin_unlock(&chip->reg_lock);
85
86 for (i = 0; i < PCM_COUNT; ++i)
87 if ((elapsed_streams & (1 << i)) && chip->streams[i])
88 snd_pcm_period_elapsed(chip->streams[i]);
89
90 if (status & OXYGEN_INT_SPDIF_IN_DETECT) {
91 spin_lock(&chip->reg_lock);
92 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
93 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
94 OXYGEN_SPDIF_RATE_INT)) {
95 /* write the interrupt bit(s) to clear */
96 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
97 schedule_work(&chip->spdif_input_bits_work);
98 }
99 spin_unlock(&chip->reg_lock);
100 }
101
102 if (status & OXYGEN_INT_GPIO)
103 schedule_work(&chip->gpio_work);
104
105 if (status & OXYGEN_INT_MIDI) {
106 if (chip->midi)
107 snd_mpu401_uart_interrupt(0, chip->midi->private_data);
108 else
109 oxygen_read_uart(chip);
110 }
111
112 if (status & OXYGEN_INT_AC97)
113 wake_up(&chip->ac97_waitqueue);
114
115 return IRQ_HANDLED;
116}
117
118static void oxygen_spdif_input_bits_changed(struct work_struct *work)
119{
120 struct oxygen *chip = container_of(work, struct oxygen,
121 spdif_input_bits_work);
122 u32 reg;
123
124 /*
125 * This function gets called when there is new activity on the SPDIF
126 * input, or when we lose lock on the input signal, or when the rate
127 * changes.
128 */
129 msleep(1);
130 spin_lock_irq(&chip->reg_lock);
131 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
132 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
133 OXYGEN_SPDIF_LOCK_STATUS))
134 == OXYGEN_SPDIF_SENSE_STATUS) {
135 /*
136 * If we detect activity on the SPDIF input but cannot lock to
137 * a signal, the clock bit is likely to be wrong.
138 */
139 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
140 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
141 spin_unlock_irq(&chip->reg_lock);
142 msleep(1);
143 spin_lock_irq(&chip->reg_lock);
144 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
145 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
146 OXYGEN_SPDIF_LOCK_STATUS))
147 == OXYGEN_SPDIF_SENSE_STATUS) {
148 /* nothing detected with either clock; give up */
149 if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
150 == OXYGEN_SPDIF_IN_CLOCK_192) {
151 /*
152 * Reset clock to <= 96 kHz because this is
153 * more likely to be received next time.
154 */
155 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
156 reg |= OXYGEN_SPDIF_IN_CLOCK_96;
157 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
158 }
159 }
160 }
161 spin_unlock_irq(&chip->reg_lock);
162
163 if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
164 spin_lock_irq(&chip->reg_lock);
165 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
166 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
167 chip->interrupt_mask);
168 spin_unlock_irq(&chip->reg_lock);
169
170 /*
171 * We don't actually know that any channel status bits have
172 * changed, but let's send a notification just to be sure.
173 */
174 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
175 &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
176 }
177}
178
179static void oxygen_gpio_changed(struct work_struct *work)
180{
181 struct oxygen *chip = container_of(work, struct oxygen, gpio_work);
182
183 if (chip->model.gpio_changed)
184 chip->model.gpio_changed(chip);
185}
186
187static void oxygen_proc_read(struct snd_info_entry *entry,
188 struct snd_info_buffer *buffer)
189{
190 struct oxygen *chip = entry->private_data;
191 int i, j;
192
193 switch (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_PACKAGE_ID_MASK) {
194 case OXYGEN_PACKAGE_ID_8786: i = '6'; break;
195 case OXYGEN_PACKAGE_ID_8787: i = '7'; break;
196 case OXYGEN_PACKAGE_ID_8788: i = '8'; break;
197 default: i = '?'; break;
198 }
199 snd_iprintf(buffer, "CMI878%c:\n", i);
200 for (i = 0; i < OXYGEN_IO_SIZE; i += 0x10) {
201 snd_iprintf(buffer, "%02x:", i);
202 for (j = 0; j < 0x10; ++j)
203 snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
204 snd_iprintf(buffer, "\n");
205 }
206 if (mutex_lock_interruptible(&chip->mutex) < 0)
207 return;
208 if (chip->has_ac97_0) {
209 snd_iprintf(buffer, "\nAC97:\n");
210 for (i = 0; i < 0x80; i += 0x10) {
211 snd_iprintf(buffer, "%02x:", i);
212 for (j = 0; j < 0x10; j += 2)
213 snd_iprintf(buffer, " %04x",
214 oxygen_read_ac97(chip, 0, i + j));
215 snd_iprintf(buffer, "\n");
216 }
217 }
218 if (chip->has_ac97_1) {
219 snd_iprintf(buffer, "\nAC97 2:\n");
220 for (i = 0; i < 0x80; i += 0x10) {
221 snd_iprintf(buffer, "%02x:", i);
222 for (j = 0; j < 0x10; j += 2)
223 snd_iprintf(buffer, " %04x",
224 oxygen_read_ac97(chip, 1, i + j));
225 snd_iprintf(buffer, "\n");
226 }
227 }
228 mutex_unlock(&chip->mutex);
229 if (chip->model.dump_registers)
230 chip->model.dump_registers(chip, buffer);
231}
232
233static void oxygen_proc_init(struct oxygen *chip)
234{
235 snd_card_ro_proc_new(chip->card, "oxygen", chip, oxygen_proc_read);
236}
237
238static const struct pci_device_id *
239oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
240{
241 u16 subdevice;
242
243 /*
244 * Make sure the EEPROM pins are available, i.e., not used for SPI.
245 * (This function is called before we initialize or use SPI.)
246 */
247 oxygen_clear_bits8(chip, OXYGEN_FUNCTION,
248 OXYGEN_FUNCTION_ENABLE_SPI_4_5);
249 /*
250 * Read the subsystem device ID directly from the EEPROM, because the
251 * chip didn't if the first EEPROM word was overwritten.
252 */
253 subdevice = oxygen_read_eeprom(chip, 2);
254 /* use default ID if EEPROM is missing */
255 if (subdevice == 0xffff && oxygen_read_eeprom(chip, 1) == 0xffff)
256 subdevice = 0x8788;
257 /*
258 * We use only the subsystem device ID for searching because it is
259 * unique even without the subsystem vendor ID, which may have been
260 * overwritten in the EEPROM.
261 */
262 for (; ids->vendor; ++ids)
263 if (ids->subdevice == subdevice &&
264 ids->driver_data != BROKEN_EEPROM_DRIVER_DATA)
265 return ids;
266 return NULL;
267}
268
269static void oxygen_restore_eeprom(struct oxygen *chip,
270 const struct pci_device_id *id)
271{
272 u16 eeprom_id;
273
274 eeprom_id = oxygen_read_eeprom(chip, 0);
275 if (eeprom_id != OXYGEN_EEPROM_ID &&
276 (eeprom_id != 0xffff || id->subdevice != 0x8788)) {
277 /*
278 * This function gets called only when a known card model has
279 * been detected, i.e., we know there is a valid subsystem
280 * product ID at index 2 in the EEPROM. Therefore, we have
281 * been able to deduce the correct subsystem vendor ID, and
282 * this is enough information to restore the original EEPROM
283 * contents.
284 */
285 oxygen_write_eeprom(chip, 1, id->subvendor);
286 oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID);
287
288 oxygen_set_bits8(chip, OXYGEN_MISC,
289 OXYGEN_MISC_WRITE_PCI_SUBID);
290 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID,
291 id->subvendor);
292 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID,
293 id->subdevice);
294 oxygen_clear_bits8(chip, OXYGEN_MISC,
295 OXYGEN_MISC_WRITE_PCI_SUBID);
296
297 dev_info(chip->card->dev, "EEPROM ID restored\n");
298 }
299}
300
301static void configure_pcie_bridge(struct pci_dev *pci)
302{
303 enum { PEX811X, PI7C9X110, XIO2001 };
304 static const struct pci_device_id bridge_ids[] = {
305 { PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },
306 { PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },
307 { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },
308 { PCI_VDEVICE(TI, 0x8240), .driver_data = XIO2001 },
309 { }
310 };
311 struct pci_dev *bridge;
312 const struct pci_device_id *id;
313 u32 tmp;
314
315 if (!pci->bus || !pci->bus->self)
316 return;
317 bridge = pci->bus->self;
318
319 id = pci_match_id(bridge_ids, bridge);
320 if (!id)
321 return;
322
323 switch (id->driver_data) {
324 case PEX811X: /* PLX PEX8111/PEX8112 PCIe/PCI bridge */
325 pci_read_config_dword(bridge, 0x48, &tmp);
326 tmp |= 1; /* enable blind prefetching */
327 tmp |= 1 << 11; /* enable beacon generation */
328 pci_write_config_dword(bridge, 0x48, tmp);
329
330 pci_write_config_dword(bridge, 0x84, 0x0c);
331 pci_read_config_dword(bridge, 0x88, &tmp);
332 tmp &= ~(7 << 27);
333 tmp |= 2 << 27; /* set prefetch size to 128 bytes */
334 pci_write_config_dword(bridge, 0x88, tmp);
335 break;
336
337 case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */
338 pci_read_config_dword(bridge, 0x40, &tmp);
339 tmp |= 1; /* park the PCI arbiter to the sound chip */
340 pci_write_config_dword(bridge, 0x40, tmp);
341 break;
342
343 case XIO2001: /* Texas Instruments XIO2001 PCIe/PCI bridge */
344 pci_read_config_dword(bridge, 0xe8, &tmp);
345 tmp &= ~0xf; /* request length limit: 64 bytes */
346 tmp &= ~(0xf << 8);
347 tmp |= 1 << 8; /* request count limit: one buffer */
348 pci_write_config_dword(bridge, 0xe8, tmp);
349 break;
350 }
351}
352
353static void oxygen_init(struct oxygen *chip)
354{
355 unsigned int i;
356
357 chip->dac_routing = 1;
358 for (i = 0; i < 8; ++i)
359 chip->dac_volume[i] = chip->model.dac_volume_min;
360 chip->dac_mute = 1;
361 chip->spdif_playback_enable = 0;
362 chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
363 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
364 chip->spdif_pcm_bits = chip->spdif_bits;
365
366 if (!(oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2))
367 oxygen_set_bits8(chip, OXYGEN_MISC,
368 OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
369
370 i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
371 chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
372 chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
373
374 oxygen_write8_masked(chip, OXYGEN_FUNCTION,
375 OXYGEN_FUNCTION_RESET_CODEC |
376 chip->model.function_flags,
377 OXYGEN_FUNCTION_RESET_CODEC |
378 OXYGEN_FUNCTION_2WIRE_SPI_MASK |
379 OXYGEN_FUNCTION_ENABLE_SPI_4_5);
380 oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
381 oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
382 oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
383 OXYGEN_PLAY_CHANNELS_2 |
384 OXYGEN_DMA_A_BURST_8 |
385 OXYGEN_DMA_MULTICH_BURST_8);
386 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
387 oxygen_write8_masked(chip, OXYGEN_MISC,
388 chip->model.misc_flags,
389 OXYGEN_MISC_WRITE_PCI_SUBID |
390 OXYGEN_MISC_REC_C_FROM_SPDIF |
391 OXYGEN_MISC_REC_B_FROM_AC97 |
392 OXYGEN_MISC_REC_A_FROM_MULTICH |
393 OXYGEN_MISC_MIDI);
394 oxygen_write8(chip, OXYGEN_REC_FORMAT,
395 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
396 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
397 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
398 oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
399 (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
400 (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
401 oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
402 oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
403 OXYGEN_RATE_48000 |
404 chip->model.dac_i2s_format |
405 OXYGEN_I2S_MCLK(chip->model.dac_mclks) |
406 OXYGEN_I2S_BITS_16 |
407 OXYGEN_I2S_MASTER |
408 OXYGEN_I2S_BCLK_64);
409 if (chip->model.device_config & CAPTURE_0_FROM_I2S_1)
410 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
411 OXYGEN_RATE_48000 |
412 chip->model.adc_i2s_format |
413 OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
414 OXYGEN_I2S_BITS_16 |
415 OXYGEN_I2S_MASTER |
416 OXYGEN_I2S_BCLK_64);
417 else
418 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
419 OXYGEN_I2S_MASTER |
420 OXYGEN_I2S_MUTE_MCLK);
421 if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 |
422 CAPTURE_2_FROM_I2S_2))
423 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
424 OXYGEN_RATE_48000 |
425 chip->model.adc_i2s_format |
426 OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
427 OXYGEN_I2S_BITS_16 |
428 OXYGEN_I2S_MASTER |
429 OXYGEN_I2S_BCLK_64);
430 else
431 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
432 OXYGEN_I2S_MASTER |
433 OXYGEN_I2S_MUTE_MCLK);
434 if (chip->model.device_config & CAPTURE_3_FROM_I2S_3)
435 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
436 OXYGEN_RATE_48000 |
437 chip->model.adc_i2s_format |
438 OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
439 OXYGEN_I2S_BITS_16 |
440 OXYGEN_I2S_MASTER |
441 OXYGEN_I2S_BCLK_64);
442 else
443 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
444 OXYGEN_I2S_MASTER |
445 OXYGEN_I2S_MUTE_MCLK);
446 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
447 OXYGEN_SPDIF_OUT_ENABLE |
448 OXYGEN_SPDIF_LOOPBACK);
449 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
450 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
451 OXYGEN_SPDIF_SENSE_MASK |
452 OXYGEN_SPDIF_LOCK_MASK |
453 OXYGEN_SPDIF_RATE_MASK |
454 OXYGEN_SPDIF_LOCK_PAR |
455 OXYGEN_SPDIF_IN_CLOCK_96,
456 OXYGEN_SPDIF_SENSE_MASK |
457 OXYGEN_SPDIF_LOCK_MASK |
458 OXYGEN_SPDIF_RATE_MASK |
459 OXYGEN_SPDIF_SENSE_PAR |
460 OXYGEN_SPDIF_LOCK_PAR |
461 OXYGEN_SPDIF_IN_CLOCK_MASK);
462 else
463 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
464 OXYGEN_SPDIF_SENSE_MASK |
465 OXYGEN_SPDIF_LOCK_MASK |
466 OXYGEN_SPDIF_RATE_MASK);
467 oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
468 oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
469 OXYGEN_2WIRE_LENGTH_8 |
470 OXYGEN_2WIRE_INTERRUPT_MASK |
471 OXYGEN_2WIRE_SPEED_STANDARD);
472 oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
473 oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
474 oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
475 oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
476 OXYGEN_PLAY_MULTICH_I2S_DAC |
477 OXYGEN_PLAY_SPDIF_SPDIF |
478 (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
479 (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
480 (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
481 (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
482 oxygen_write8(chip, OXYGEN_REC_ROUTING,
483 OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
484 OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
485 OXYGEN_REC_C_ROUTE_SPDIF);
486 oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
487 oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
488 (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
489 (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
490 (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
491 (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
492
493 if (chip->has_ac97_0 | chip->has_ac97_1)
494 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
495 OXYGEN_AC97_INT_READ_DONE |
496 OXYGEN_AC97_INT_WRITE_DONE);
497 else
498 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
499 oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
500 oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
501 if (!(chip->has_ac97_0 | chip->has_ac97_1))
502 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
503 OXYGEN_AC97_CLOCK_DISABLE);
504 if (!chip->has_ac97_0) {
505 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
506 OXYGEN_AC97_NO_CODEC_0);
507 } else {
508 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
509 msleep(1);
510 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
511 CM9780_GPIO0IO | CM9780_GPIO1IO);
512 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
513 CM9780_BSTSEL | CM9780_STRO_MIC |
514 CM9780_MIX2FR | CM9780_PCBSW);
515 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
516 CM9780_RSOE | CM9780_CBOE |
517 CM9780_SSOE | CM9780_FROE |
518 CM9780_MIC2MIC | CM9780_LI2LI);
519 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
520 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
521 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
522 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
523 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
524 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
525 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
526 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
527 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
528 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
529 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS,
530 CM9780_GPO0);
531 /* power down unused ADCs and DACs */
532 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
533 AC97_PD_PR0 | AC97_PD_PR1);
534 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
535 AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
536 }
537 if (chip->has_ac97_1) {
538 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
539 OXYGEN_AC97_CODEC1_SLOT3 |
540 OXYGEN_AC97_CODEC1_SLOT4);
541 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
542 msleep(1);
543 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
544 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
545 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
546 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
547 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
548 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
549 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
550 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
551 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
552 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
553 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
554 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
555 }
556}
557
558static void oxygen_shutdown(struct oxygen *chip)
559{
560 spin_lock_irq(&chip->reg_lock);
561 chip->interrupt_mask = 0;
562 chip->pcm_running = 0;
563 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
564 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
565 spin_unlock_irq(&chip->reg_lock);
566}
567
568static void oxygen_card_free(struct snd_card *card)
569{
570 struct oxygen *chip = card->private_data;
571
572 oxygen_shutdown(chip);
573 if (chip->irq >= 0)
574 free_irq(chip->irq, chip);
575 flush_work(&chip->spdif_input_bits_work);
576 flush_work(&chip->gpio_work);
577 chip->model.cleanup(chip);
578 kfree(chip->model_data);
579 mutex_destroy(&chip->mutex);
580 pci_release_regions(chip->pci);
581 pci_disable_device(chip->pci);
582}
583
584int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
585 struct module *owner,
586 const struct pci_device_id *ids,
587 int (*get_model)(struct oxygen *chip,
588 const struct pci_device_id *id
589 )
590 )
591{
592 struct snd_card *card;
593 struct oxygen *chip;
594 const struct pci_device_id *pci_id;
595 int err;
596
597 err = snd_card_new(&pci->dev, index, id, owner,
598 sizeof(*chip), &card);
599 if (err < 0)
600 return err;
601
602 chip = card->private_data;
603 chip->card = card;
604 chip->pci = pci;
605 chip->irq = -1;
606 spin_lock_init(&chip->reg_lock);
607 mutex_init(&chip->mutex);
608 INIT_WORK(&chip->spdif_input_bits_work,
609 oxygen_spdif_input_bits_changed);
610 INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
611 init_waitqueue_head(&chip->ac97_waitqueue);
612
613 err = pci_enable_device(pci);
614 if (err < 0)
615 goto err_card;
616
617 err = pci_request_regions(pci, DRIVER);
618 if (err < 0) {
619 dev_err(card->dev, "cannot reserve PCI resources\n");
620 goto err_pci_enable;
621 }
622
623 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
624 pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) {
625 dev_err(card->dev, "invalid PCI I/O range\n");
626 err = -ENXIO;
627 goto err_pci_regions;
628 }
629 chip->addr = pci_resource_start(pci, 0);
630
631 pci_id = oxygen_search_pci_id(chip, ids);
632 if (!pci_id) {
633 err = -ENODEV;
634 goto err_pci_regions;
635 }
636 oxygen_restore_eeprom(chip, pci_id);
637 err = get_model(chip, pci_id);
638 if (err < 0)
639 goto err_pci_regions;
640
641 if (chip->model.model_data_size) {
642 chip->model_data = kzalloc(chip->model.model_data_size,
643 GFP_KERNEL);
644 if (!chip->model_data) {
645 err = -ENOMEM;
646 goto err_pci_regions;
647 }
648 }
649
650 pci_set_master(pci);
651 card->private_free = oxygen_card_free;
652
653 configure_pcie_bridge(pci);
654 oxygen_init(chip);
655 chip->model.init(chip);
656
657 err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
658 KBUILD_MODNAME, chip);
659 if (err < 0) {
660 dev_err(card->dev, "cannot grab interrupt %d\n", pci->irq);
661 goto err_card;
662 }
663 chip->irq = pci->irq;
664 card->sync_irq = chip->irq;
665
666 strcpy(card->driver, chip->model.chip);
667 strcpy(card->shortname, chip->model.shortname);
668 sprintf(card->longname, "%s at %#lx, irq %i",
669 chip->model.longname, chip->addr, chip->irq);
670 strcpy(card->mixername, chip->model.chip);
671 snd_component_add(card, chip->model.chip);
672
673 err = oxygen_pcm_init(chip);
674 if (err < 0)
675 goto err_card;
676
677 err = oxygen_mixer_init(chip);
678 if (err < 0)
679 goto err_card;
680
681 if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) {
682 unsigned int info_flags =
683 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK;
684 if (chip->model.device_config & MIDI_OUTPUT)
685 info_flags |= MPU401_INFO_OUTPUT;
686 if (chip->model.device_config & MIDI_INPUT)
687 info_flags |= MPU401_INFO_INPUT;
688 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
689 chip->addr + OXYGEN_MPU401,
690 info_flags, -1, &chip->midi);
691 if (err < 0)
692 goto err_card;
693 }
694
695 oxygen_proc_init(chip);
696
697 spin_lock_irq(&chip->reg_lock);
698 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
699 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
700 if (chip->has_ac97_0 | chip->has_ac97_1)
701 chip->interrupt_mask |= OXYGEN_INT_AC97;
702 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
703 spin_unlock_irq(&chip->reg_lock);
704
705 err = snd_card_register(card);
706 if (err < 0)
707 goto err_card;
708
709 pci_set_drvdata(pci, card);
710 return 0;
711
712err_pci_regions:
713 pci_release_regions(pci);
714err_pci_enable:
715 pci_disable_device(pci);
716err_card:
717 snd_card_free(card);
718 return err;
719}
720EXPORT_SYMBOL(oxygen_pci_probe);
721
722void oxygen_pci_remove(struct pci_dev *pci)
723{
724 snd_card_free(pci_get_drvdata(pci));
725}
726EXPORT_SYMBOL(oxygen_pci_remove);
727
728#ifdef CONFIG_PM_SLEEP
729static int oxygen_pci_suspend(struct device *dev)
730{
731 struct snd_card *card = dev_get_drvdata(dev);
732 struct oxygen *chip = card->private_data;
733 unsigned int saved_interrupt_mask;
734
735 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
736
737 if (chip->model.suspend)
738 chip->model.suspend(chip);
739
740 spin_lock_irq(&chip->reg_lock);
741 saved_interrupt_mask = chip->interrupt_mask;
742 chip->interrupt_mask = 0;
743 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
744 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
745 spin_unlock_irq(&chip->reg_lock);
746
747 flush_work(&chip->spdif_input_bits_work);
748 flush_work(&chip->gpio_work);
749 chip->interrupt_mask = saved_interrupt_mask;
750 return 0;
751}
752
753static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
754 0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
755 0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
756};
757static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
758 { 0x18284fa2, 0x03060000 },
759 { 0x00007fa6, 0x00200000 }
760};
761
762static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
763{
764 return bitmap[bit / 32] & (1 << (bit & 31));
765}
766
767static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec)
768{
769 unsigned int i;
770
771 oxygen_write_ac97(chip, codec, AC97_RESET, 0);
772 msleep(1);
773 for (i = 1; i < 0x40; ++i)
774 if (is_bit_set(ac97_registers_to_restore[codec], i))
775 oxygen_write_ac97(chip, codec, i * 2,
776 chip->saved_ac97_registers[codec][i]);
777}
778
779static int oxygen_pci_resume(struct device *dev)
780{
781 struct snd_card *card = dev_get_drvdata(dev);
782 struct oxygen *chip = card->private_data;
783 unsigned int i;
784
785 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
786 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
787 for (i = 0; i < OXYGEN_IO_SIZE; ++i)
788 if (is_bit_set(registers_to_restore, i))
789 oxygen_write8(chip, i, chip->saved_registers._8[i]);
790 if (chip->has_ac97_0)
791 oxygen_restore_ac97(chip, 0);
792 if (chip->has_ac97_1)
793 oxygen_restore_ac97(chip, 1);
794
795 if (chip->model.resume)
796 chip->model.resume(chip);
797
798 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
799
800 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
801 return 0;
802}
803
804SIMPLE_DEV_PM_OPS(oxygen_pci_pm, oxygen_pci_suspend, oxygen_pci_resume);
805EXPORT_SYMBOL(oxygen_pci_pm);
806#endif /* CONFIG_PM_SLEEP */
807
808void oxygen_pci_shutdown(struct pci_dev *pci)
809{
810 struct snd_card *card = pci_get_drvdata(pci);
811 struct oxygen *chip = card->private_data;
812
813 oxygen_shutdown(chip);
814 chip->model.cleanup(chip);
815}
816EXPORT_SYMBOL(oxygen_pci_shutdown);
1/*
2 * C-Media CMI8788 driver - main driver module
3 *
4 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
5 *
6 *
7 * This driver is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License, version 2.
9 *
10 * This driver is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this driver; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#include <linux/delay.h>
21#include <linux/interrupt.h>
22#include <linux/mutex.h>
23#include <linux/pci.h>
24#include <linux/slab.h>
25#include <sound/ac97_codec.h>
26#include <sound/asoundef.h>
27#include <sound/core.h>
28#include <sound/info.h>
29#include <sound/mpu401.h>
30#include <sound/pcm.h>
31#include "oxygen.h"
32#include "cm9780.h"
33
34MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
35MODULE_DESCRIPTION("C-Media CMI8788 helper library");
36MODULE_LICENSE("GPL v2");
37
38#define DRIVER "oxygen"
39
40static inline int oxygen_uart_input_ready(struct oxygen *chip)
41{
42 return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY);
43}
44
45static void oxygen_read_uart(struct oxygen *chip)
46{
47 if (unlikely(!oxygen_uart_input_ready(chip))) {
48 /* no data, but read it anyway to clear the interrupt */
49 oxygen_read8(chip, OXYGEN_MPU401);
50 return;
51 }
52 do {
53 u8 data = oxygen_read8(chip, OXYGEN_MPU401);
54 if (data == MPU401_ACK)
55 continue;
56 if (chip->uart_input_count >= ARRAY_SIZE(chip->uart_input))
57 chip->uart_input_count = 0;
58 chip->uart_input[chip->uart_input_count++] = data;
59 } while (oxygen_uart_input_ready(chip));
60 if (chip->model.uart_input)
61 chip->model.uart_input(chip);
62}
63
64static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
65{
66 struct oxygen *chip = dev_id;
67 unsigned int status, clear, elapsed_streams, i;
68
69 status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
70 if (!status)
71 return IRQ_NONE;
72
73 spin_lock(&chip->reg_lock);
74
75 clear = status & (OXYGEN_CHANNEL_A |
76 OXYGEN_CHANNEL_B |
77 OXYGEN_CHANNEL_C |
78 OXYGEN_CHANNEL_SPDIF |
79 OXYGEN_CHANNEL_MULTICH |
80 OXYGEN_CHANNEL_AC97 |
81 OXYGEN_INT_SPDIF_IN_DETECT |
82 OXYGEN_INT_GPIO |
83 OXYGEN_INT_AC97);
84 if (clear) {
85 if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
86 chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
87 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
88 chip->interrupt_mask & ~clear);
89 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
90 chip->interrupt_mask);
91 }
92
93 elapsed_streams = status & chip->pcm_running;
94
95 spin_unlock(&chip->reg_lock);
96
97 for (i = 0; i < PCM_COUNT; ++i)
98 if ((elapsed_streams & (1 << i)) && chip->streams[i])
99 snd_pcm_period_elapsed(chip->streams[i]);
100
101 if (status & OXYGEN_INT_SPDIF_IN_DETECT) {
102 spin_lock(&chip->reg_lock);
103 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
104 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
105 OXYGEN_SPDIF_RATE_INT)) {
106 /* write the interrupt bit(s) to clear */
107 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
108 schedule_work(&chip->spdif_input_bits_work);
109 }
110 spin_unlock(&chip->reg_lock);
111 }
112
113 if (status & OXYGEN_INT_GPIO)
114 schedule_work(&chip->gpio_work);
115
116 if (status & OXYGEN_INT_MIDI) {
117 if (chip->midi)
118 snd_mpu401_uart_interrupt(0, chip->midi->private_data);
119 else
120 oxygen_read_uart(chip);
121 }
122
123 if (status & OXYGEN_INT_AC97)
124 wake_up(&chip->ac97_waitqueue);
125
126 return IRQ_HANDLED;
127}
128
129static void oxygen_spdif_input_bits_changed(struct work_struct *work)
130{
131 struct oxygen *chip = container_of(work, struct oxygen,
132 spdif_input_bits_work);
133 u32 reg;
134
135 /*
136 * This function gets called when there is new activity on the SPDIF
137 * input, or when we lose lock on the input signal, or when the rate
138 * changes.
139 */
140 msleep(1);
141 spin_lock_irq(&chip->reg_lock);
142 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
143 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
144 OXYGEN_SPDIF_LOCK_STATUS))
145 == OXYGEN_SPDIF_SENSE_STATUS) {
146 /*
147 * If we detect activity on the SPDIF input but cannot lock to
148 * a signal, the clock bit is likely to be wrong.
149 */
150 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
151 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
152 spin_unlock_irq(&chip->reg_lock);
153 msleep(1);
154 spin_lock_irq(&chip->reg_lock);
155 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
156 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
157 OXYGEN_SPDIF_LOCK_STATUS))
158 == OXYGEN_SPDIF_SENSE_STATUS) {
159 /* nothing detected with either clock; give up */
160 if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
161 == OXYGEN_SPDIF_IN_CLOCK_192) {
162 /*
163 * Reset clock to <= 96 kHz because this is
164 * more likely to be received next time.
165 */
166 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
167 reg |= OXYGEN_SPDIF_IN_CLOCK_96;
168 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
169 }
170 }
171 }
172 spin_unlock_irq(&chip->reg_lock);
173
174 if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
175 spin_lock_irq(&chip->reg_lock);
176 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
177 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
178 chip->interrupt_mask);
179 spin_unlock_irq(&chip->reg_lock);
180
181 /*
182 * We don't actually know that any channel status bits have
183 * changed, but let's send a notification just to be sure.
184 */
185 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
186 &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
187 }
188}
189
190static void oxygen_gpio_changed(struct work_struct *work)
191{
192 struct oxygen *chip = container_of(work, struct oxygen, gpio_work);
193
194 if (chip->model.gpio_changed)
195 chip->model.gpio_changed(chip);
196}
197
198#ifdef CONFIG_PROC_FS
199static void oxygen_proc_read(struct snd_info_entry *entry,
200 struct snd_info_buffer *buffer)
201{
202 struct oxygen *chip = entry->private_data;
203 int i, j;
204
205 switch (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_PACKAGE_ID_MASK) {
206 case OXYGEN_PACKAGE_ID_8786: i = '6'; break;
207 case OXYGEN_PACKAGE_ID_8787: i = '7'; break;
208 case OXYGEN_PACKAGE_ID_8788: i = '8'; break;
209 default: i = '?'; break;
210 }
211 snd_iprintf(buffer, "CMI878%c:\n", i);
212 for (i = 0; i < OXYGEN_IO_SIZE; i += 0x10) {
213 snd_iprintf(buffer, "%02x:", i);
214 for (j = 0; j < 0x10; ++j)
215 snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
216 snd_iprintf(buffer, "\n");
217 }
218 if (mutex_lock_interruptible(&chip->mutex) < 0)
219 return;
220 if (chip->has_ac97_0) {
221 snd_iprintf(buffer, "\nAC97:\n");
222 for (i = 0; i < 0x80; i += 0x10) {
223 snd_iprintf(buffer, "%02x:", i);
224 for (j = 0; j < 0x10; j += 2)
225 snd_iprintf(buffer, " %04x",
226 oxygen_read_ac97(chip, 0, i + j));
227 snd_iprintf(buffer, "\n");
228 }
229 }
230 if (chip->has_ac97_1) {
231 snd_iprintf(buffer, "\nAC97 2:\n");
232 for (i = 0; i < 0x80; i += 0x10) {
233 snd_iprintf(buffer, "%02x:", i);
234 for (j = 0; j < 0x10; j += 2)
235 snd_iprintf(buffer, " %04x",
236 oxygen_read_ac97(chip, 1, i + j));
237 snd_iprintf(buffer, "\n");
238 }
239 }
240 mutex_unlock(&chip->mutex);
241 if (chip->model.dump_registers)
242 chip->model.dump_registers(chip, buffer);
243}
244
245static void oxygen_proc_init(struct oxygen *chip)
246{
247 struct snd_info_entry *entry;
248
249 if (!snd_card_proc_new(chip->card, "oxygen", &entry))
250 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
251}
252#else
253#define oxygen_proc_init(chip)
254#endif
255
256static const struct pci_device_id *
257oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
258{
259 u16 subdevice;
260
261 /*
262 * Make sure the EEPROM pins are available, i.e., not used for SPI.
263 * (This function is called before we initialize or use SPI.)
264 */
265 oxygen_clear_bits8(chip, OXYGEN_FUNCTION,
266 OXYGEN_FUNCTION_ENABLE_SPI_4_5);
267 /*
268 * Read the subsystem device ID directly from the EEPROM, because the
269 * chip didn't if the first EEPROM word was overwritten.
270 */
271 subdevice = oxygen_read_eeprom(chip, 2);
272 /* use default ID if EEPROM is missing */
273 if (subdevice == 0xffff && oxygen_read_eeprom(chip, 1) == 0xffff)
274 subdevice = 0x8788;
275 /*
276 * We use only the subsystem device ID for searching because it is
277 * unique even without the subsystem vendor ID, which may have been
278 * overwritten in the EEPROM.
279 */
280 for (; ids->vendor; ++ids)
281 if (ids->subdevice == subdevice &&
282 ids->driver_data != BROKEN_EEPROM_DRIVER_DATA)
283 return ids;
284 return NULL;
285}
286
287static void oxygen_restore_eeprom(struct oxygen *chip,
288 const struct pci_device_id *id)
289{
290 u16 eeprom_id;
291
292 eeprom_id = oxygen_read_eeprom(chip, 0);
293 if (eeprom_id != OXYGEN_EEPROM_ID &&
294 (eeprom_id != 0xffff || id->subdevice != 0x8788)) {
295 /*
296 * This function gets called only when a known card model has
297 * been detected, i.e., we know there is a valid subsystem
298 * product ID at index 2 in the EEPROM. Therefore, we have
299 * been able to deduce the correct subsystem vendor ID, and
300 * this is enough information to restore the original EEPROM
301 * contents.
302 */
303 oxygen_write_eeprom(chip, 1, id->subvendor);
304 oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID);
305
306 oxygen_set_bits8(chip, OXYGEN_MISC,
307 OXYGEN_MISC_WRITE_PCI_SUBID);
308 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID,
309 id->subvendor);
310 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID,
311 id->subdevice);
312 oxygen_clear_bits8(chip, OXYGEN_MISC,
313 OXYGEN_MISC_WRITE_PCI_SUBID);
314
315 snd_printk(KERN_INFO "EEPROM ID restored\n");
316 }
317}
318
319static void configure_pcie_bridge(struct pci_dev *pci)
320{
321 enum { PEX811X, PI7C9X110 };
322 static const struct pci_device_id bridge_ids[] = {
323 { PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },
324 { PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },
325 { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },
326 { }
327 };
328 struct pci_dev *bridge;
329 const struct pci_device_id *id;
330 u32 tmp;
331
332 if (!pci->bus || !pci->bus->self)
333 return;
334 bridge = pci->bus->self;
335
336 id = pci_match_id(bridge_ids, bridge);
337 if (!id)
338 return;
339
340 switch (id->driver_data) {
341 case PEX811X: /* PLX PEX8111/PEX8112 PCIe/PCI bridge */
342 pci_read_config_dword(bridge, 0x48, &tmp);
343 tmp |= 1; /* enable blind prefetching */
344 tmp |= 1 << 11; /* enable beacon generation */
345 pci_write_config_dword(bridge, 0x48, tmp);
346
347 pci_write_config_dword(bridge, 0x84, 0x0c);
348 pci_read_config_dword(bridge, 0x88, &tmp);
349 tmp &= ~(7 << 27);
350 tmp |= 2 << 27; /* set prefetch size to 128 bytes */
351 pci_write_config_dword(bridge, 0x88, tmp);
352 break;
353
354 case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */
355 pci_read_config_dword(bridge, 0x40, &tmp);
356 tmp |= 1; /* park the PCI arbiter to the sound chip */
357 pci_write_config_dword(bridge, 0x40, tmp);
358 break;
359 }
360}
361
362static void oxygen_init(struct oxygen *chip)
363{
364 unsigned int i;
365
366 chip->dac_routing = 1;
367 for (i = 0; i < 8; ++i)
368 chip->dac_volume[i] = chip->model.dac_volume_min;
369 chip->dac_mute = 1;
370 chip->spdif_playback_enable = 1;
371 chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
372 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
373 chip->spdif_pcm_bits = chip->spdif_bits;
374
375 if (!(oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2))
376 oxygen_set_bits8(chip, OXYGEN_MISC,
377 OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
378
379 i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
380 chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
381 chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
382
383 oxygen_write8_masked(chip, OXYGEN_FUNCTION,
384 OXYGEN_FUNCTION_RESET_CODEC |
385 chip->model.function_flags,
386 OXYGEN_FUNCTION_RESET_CODEC |
387 OXYGEN_FUNCTION_2WIRE_SPI_MASK |
388 OXYGEN_FUNCTION_ENABLE_SPI_4_5);
389 oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
390 oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
391 oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
392 OXYGEN_PLAY_CHANNELS_2 |
393 OXYGEN_DMA_A_BURST_8 |
394 OXYGEN_DMA_MULTICH_BURST_8);
395 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
396 oxygen_write8_masked(chip, OXYGEN_MISC,
397 chip->model.misc_flags,
398 OXYGEN_MISC_WRITE_PCI_SUBID |
399 OXYGEN_MISC_REC_C_FROM_SPDIF |
400 OXYGEN_MISC_REC_B_FROM_AC97 |
401 OXYGEN_MISC_REC_A_FROM_MULTICH |
402 OXYGEN_MISC_MIDI);
403 oxygen_write8(chip, OXYGEN_REC_FORMAT,
404 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
405 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
406 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
407 oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
408 (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
409 (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
410 oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
411 oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
412 OXYGEN_RATE_48000 |
413 chip->model.dac_i2s_format |
414 OXYGEN_I2S_MCLK(chip->model.dac_mclks) |
415 OXYGEN_I2S_BITS_16 |
416 OXYGEN_I2S_MASTER |
417 OXYGEN_I2S_BCLK_64);
418 if (chip->model.device_config & CAPTURE_0_FROM_I2S_1)
419 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
420 OXYGEN_RATE_48000 |
421 chip->model.adc_i2s_format |
422 OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
423 OXYGEN_I2S_BITS_16 |
424 OXYGEN_I2S_MASTER |
425 OXYGEN_I2S_BCLK_64);
426 else
427 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
428 OXYGEN_I2S_MASTER |
429 OXYGEN_I2S_MUTE_MCLK);
430 if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 |
431 CAPTURE_2_FROM_I2S_2))
432 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
433 OXYGEN_RATE_48000 |
434 chip->model.adc_i2s_format |
435 OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
436 OXYGEN_I2S_BITS_16 |
437 OXYGEN_I2S_MASTER |
438 OXYGEN_I2S_BCLK_64);
439 else
440 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
441 OXYGEN_I2S_MASTER |
442 OXYGEN_I2S_MUTE_MCLK);
443 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
444 OXYGEN_I2S_MASTER |
445 OXYGEN_I2S_MUTE_MCLK);
446 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
447 OXYGEN_SPDIF_OUT_ENABLE |
448 OXYGEN_SPDIF_LOOPBACK);
449 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
450 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
451 OXYGEN_SPDIF_SENSE_MASK |
452 OXYGEN_SPDIF_LOCK_MASK |
453 OXYGEN_SPDIF_RATE_MASK |
454 OXYGEN_SPDIF_LOCK_PAR |
455 OXYGEN_SPDIF_IN_CLOCK_96,
456 OXYGEN_SPDIF_SENSE_MASK |
457 OXYGEN_SPDIF_LOCK_MASK |
458 OXYGEN_SPDIF_RATE_MASK |
459 OXYGEN_SPDIF_SENSE_PAR |
460 OXYGEN_SPDIF_LOCK_PAR |
461 OXYGEN_SPDIF_IN_CLOCK_MASK);
462 else
463 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
464 OXYGEN_SPDIF_SENSE_MASK |
465 OXYGEN_SPDIF_LOCK_MASK |
466 OXYGEN_SPDIF_RATE_MASK);
467 oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
468 oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
469 OXYGEN_2WIRE_LENGTH_8 |
470 OXYGEN_2WIRE_INTERRUPT_MASK |
471 OXYGEN_2WIRE_SPEED_STANDARD);
472 oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
473 oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
474 oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
475 oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
476 OXYGEN_PLAY_MULTICH_I2S_DAC |
477 OXYGEN_PLAY_SPDIF_SPDIF |
478 (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
479 (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
480 (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
481 (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
482 oxygen_write8(chip, OXYGEN_REC_ROUTING,
483 OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
484 OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
485 OXYGEN_REC_C_ROUTE_SPDIF);
486 oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
487 oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
488 (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
489 (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
490 (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
491 (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
492
493 if (chip->has_ac97_0 | chip->has_ac97_1)
494 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
495 OXYGEN_AC97_INT_READ_DONE |
496 OXYGEN_AC97_INT_WRITE_DONE);
497 else
498 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
499 oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
500 oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
501 if (!(chip->has_ac97_0 | chip->has_ac97_1))
502 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
503 OXYGEN_AC97_CLOCK_DISABLE);
504 if (!chip->has_ac97_0) {
505 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
506 OXYGEN_AC97_NO_CODEC_0);
507 } else {
508 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
509 msleep(1);
510 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
511 CM9780_GPIO0IO | CM9780_GPIO1IO);
512 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
513 CM9780_BSTSEL | CM9780_STRO_MIC |
514 CM9780_MIX2FR | CM9780_PCBSW);
515 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
516 CM9780_RSOE | CM9780_CBOE |
517 CM9780_SSOE | CM9780_FROE |
518 CM9780_MIC2MIC | CM9780_LI2LI);
519 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
520 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
521 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
522 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
523 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
524 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
525 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
526 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
527 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
528 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
529 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS,
530 CM9780_GPO0);
531 /* power down unused ADCs and DACs */
532 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
533 AC97_PD_PR0 | AC97_PD_PR1);
534 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
535 AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
536 }
537 if (chip->has_ac97_1) {
538 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
539 OXYGEN_AC97_CODEC1_SLOT3 |
540 OXYGEN_AC97_CODEC1_SLOT4);
541 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
542 msleep(1);
543 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
544 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
545 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
546 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
547 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
548 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
549 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
550 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
551 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
552 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
553 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
554 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
555 }
556}
557
558static void oxygen_shutdown(struct oxygen *chip)
559{
560 spin_lock_irq(&chip->reg_lock);
561 chip->interrupt_mask = 0;
562 chip->pcm_running = 0;
563 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
564 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
565 spin_unlock_irq(&chip->reg_lock);
566}
567
568static void oxygen_card_free(struct snd_card *card)
569{
570 struct oxygen *chip = card->private_data;
571
572 oxygen_shutdown(chip);
573 if (chip->irq >= 0)
574 free_irq(chip->irq, chip);
575 flush_work_sync(&chip->spdif_input_bits_work);
576 flush_work_sync(&chip->gpio_work);
577 chip->model.cleanup(chip);
578 kfree(chip->model_data);
579 mutex_destroy(&chip->mutex);
580 pci_release_regions(chip->pci);
581 pci_disable_device(chip->pci);
582}
583
584int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
585 struct module *owner,
586 const struct pci_device_id *ids,
587 int (*get_model)(struct oxygen *chip,
588 const struct pci_device_id *id
589 )
590 )
591{
592 struct snd_card *card;
593 struct oxygen *chip;
594 const struct pci_device_id *pci_id;
595 int err;
596
597 err = snd_card_create(index, id, owner, sizeof(*chip), &card);
598 if (err < 0)
599 return err;
600
601 chip = card->private_data;
602 chip->card = card;
603 chip->pci = pci;
604 chip->irq = -1;
605 spin_lock_init(&chip->reg_lock);
606 mutex_init(&chip->mutex);
607 INIT_WORK(&chip->spdif_input_bits_work,
608 oxygen_spdif_input_bits_changed);
609 INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
610 init_waitqueue_head(&chip->ac97_waitqueue);
611
612 err = pci_enable_device(pci);
613 if (err < 0)
614 goto err_card;
615
616 err = pci_request_regions(pci, DRIVER);
617 if (err < 0) {
618 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
619 goto err_pci_enable;
620 }
621
622 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
623 pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) {
624 snd_printk(KERN_ERR "invalid PCI I/O range\n");
625 err = -ENXIO;
626 goto err_pci_regions;
627 }
628 chip->addr = pci_resource_start(pci, 0);
629
630 pci_id = oxygen_search_pci_id(chip, ids);
631 if (!pci_id) {
632 err = -ENODEV;
633 goto err_pci_regions;
634 }
635 oxygen_restore_eeprom(chip, pci_id);
636 err = get_model(chip, pci_id);
637 if (err < 0)
638 goto err_pci_regions;
639
640 if (chip->model.model_data_size) {
641 chip->model_data = kzalloc(chip->model.model_data_size,
642 GFP_KERNEL);
643 if (!chip->model_data) {
644 err = -ENOMEM;
645 goto err_pci_regions;
646 }
647 }
648
649 pci_set_master(pci);
650 snd_card_set_dev(card, &pci->dev);
651 card->private_free = oxygen_card_free;
652
653 configure_pcie_bridge(pci);
654 oxygen_init(chip);
655 chip->model.init(chip);
656
657 err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
658 KBUILD_MODNAME, chip);
659 if (err < 0) {
660 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
661 goto err_card;
662 }
663 chip->irq = pci->irq;
664
665 strcpy(card->driver, chip->model.chip);
666 strcpy(card->shortname, chip->model.shortname);
667 sprintf(card->longname, "%s at %#lx, irq %i",
668 chip->model.longname, chip->addr, chip->irq);
669 strcpy(card->mixername, chip->model.chip);
670 snd_component_add(card, chip->model.chip);
671
672 err = oxygen_pcm_init(chip);
673 if (err < 0)
674 goto err_card;
675
676 err = oxygen_mixer_init(chip);
677 if (err < 0)
678 goto err_card;
679
680 if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) {
681 unsigned int info_flags = MPU401_INFO_INTEGRATED;
682 if (chip->model.device_config & MIDI_OUTPUT)
683 info_flags |= MPU401_INFO_OUTPUT;
684 if (chip->model.device_config & MIDI_INPUT)
685 info_flags |= MPU401_INFO_INPUT;
686 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
687 chip->addr + OXYGEN_MPU401,
688 info_flags, 0, 0,
689 &chip->midi);
690 if (err < 0)
691 goto err_card;
692 }
693
694 oxygen_proc_init(chip);
695
696 spin_lock_irq(&chip->reg_lock);
697 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
698 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
699 if (chip->has_ac97_0 | chip->has_ac97_1)
700 chip->interrupt_mask |= OXYGEN_INT_AC97;
701 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
702 spin_unlock_irq(&chip->reg_lock);
703
704 err = snd_card_register(card);
705 if (err < 0)
706 goto err_card;
707
708 pci_set_drvdata(pci, card);
709 return 0;
710
711err_pci_regions:
712 pci_release_regions(pci);
713err_pci_enable:
714 pci_disable_device(pci);
715err_card:
716 snd_card_free(card);
717 return err;
718}
719EXPORT_SYMBOL(oxygen_pci_probe);
720
721void oxygen_pci_remove(struct pci_dev *pci)
722{
723 snd_card_free(pci_get_drvdata(pci));
724 pci_set_drvdata(pci, NULL);
725}
726EXPORT_SYMBOL(oxygen_pci_remove);
727
728#ifdef CONFIG_PM
729int oxygen_pci_suspend(struct pci_dev *pci, pm_message_t state)
730{
731 struct snd_card *card = pci_get_drvdata(pci);
732 struct oxygen *chip = card->private_data;
733 unsigned int i, saved_interrupt_mask;
734
735 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
736
737 for (i = 0; i < PCM_COUNT; ++i)
738 if (chip->streams[i])
739 snd_pcm_suspend(chip->streams[i]);
740
741 if (chip->model.suspend)
742 chip->model.suspend(chip);
743
744 spin_lock_irq(&chip->reg_lock);
745 saved_interrupt_mask = chip->interrupt_mask;
746 chip->interrupt_mask = 0;
747 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
748 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
749 spin_unlock_irq(&chip->reg_lock);
750
751 synchronize_irq(chip->irq);
752 flush_work_sync(&chip->spdif_input_bits_work);
753 flush_work_sync(&chip->gpio_work);
754 chip->interrupt_mask = saved_interrupt_mask;
755
756 pci_disable_device(pci);
757 pci_save_state(pci);
758 pci_set_power_state(pci, pci_choose_state(pci, state));
759 return 0;
760}
761EXPORT_SYMBOL(oxygen_pci_suspend);
762
763static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
764 0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
765 0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
766};
767static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
768 { 0x18284fa2, 0x03060000 },
769 { 0x00007fa6, 0x00200000 }
770};
771
772static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
773{
774 return bitmap[bit / 32] & (1 << (bit & 31));
775}
776
777static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec)
778{
779 unsigned int i;
780
781 oxygen_write_ac97(chip, codec, AC97_RESET, 0);
782 msleep(1);
783 for (i = 1; i < 0x40; ++i)
784 if (is_bit_set(ac97_registers_to_restore[codec], i))
785 oxygen_write_ac97(chip, codec, i * 2,
786 chip->saved_ac97_registers[codec][i]);
787}
788
789int oxygen_pci_resume(struct pci_dev *pci)
790{
791 struct snd_card *card = pci_get_drvdata(pci);
792 struct oxygen *chip = card->private_data;
793 unsigned int i;
794
795 pci_set_power_state(pci, PCI_D0);
796 pci_restore_state(pci);
797 if (pci_enable_device(pci) < 0) {
798 snd_printk(KERN_ERR "cannot reenable device");
799 snd_card_disconnect(card);
800 return -EIO;
801 }
802 pci_set_master(pci);
803
804 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
805 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
806 for (i = 0; i < OXYGEN_IO_SIZE; ++i)
807 if (is_bit_set(registers_to_restore, i))
808 oxygen_write8(chip, i, chip->saved_registers._8[i]);
809 if (chip->has_ac97_0)
810 oxygen_restore_ac97(chip, 0);
811 if (chip->has_ac97_1)
812 oxygen_restore_ac97(chip, 1);
813
814 if (chip->model.resume)
815 chip->model.resume(chip);
816
817 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
818
819 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
820 return 0;
821}
822EXPORT_SYMBOL(oxygen_pci_resume);
823#endif /* CONFIG_PM */
824
825void oxygen_pci_shutdown(struct pci_dev *pci)
826{
827 struct snd_card *card = pci_get_drvdata(pci);
828 struct oxygen *chip = card->private_data;
829
830 oxygen_shutdown(chip);
831 chip->model.cleanup(chip);
832}
833EXPORT_SYMBOL(oxygen_pci_shutdown);