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
23 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
24 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
25 MODULE_LICENSE("GPL v2");
26
27 #define DRIVER "oxygen"
28
oxygen_uart_input_ready(struct oxygen * chip)29 static inline int oxygen_uart_input_ready(struct oxygen *chip)
30 {
31 return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY);
32 }
33
oxygen_read_uart(struct oxygen * chip)34 static 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
oxygen_interrupt(int dummy,void * dev_id)53 static 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
oxygen_spdif_input_bits_changed(struct work_struct * work)118 static 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
oxygen_gpio_changed(struct work_struct * work)179 static 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
oxygen_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)187 static 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
oxygen_proc_init(struct oxygen * chip)233 static void oxygen_proc_init(struct oxygen *chip)
234 {
235 snd_card_ro_proc_new(chip->card, "oxygen", chip, oxygen_proc_read);
236 }
237
238 static const struct pci_device_id *
oxygen_search_pci_id(struct oxygen * chip,const struct pci_device_id ids[])239 oxygen_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
oxygen_restore_eeprom(struct oxygen * chip,const struct pci_device_id * id)269 static 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
configure_pcie_bridge(struct pci_dev * pci)301 static 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
oxygen_init(struct oxygen * chip)353 static 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
oxygen_shutdown(struct oxygen * chip)558 static 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
oxygen_card_free(struct snd_card * card)568 static void oxygen_card_free(struct snd_card *card)
569 {
570 struct oxygen *chip = card->private_data;
571
572 oxygen_shutdown(chip);
573 flush_work(&chip->spdif_input_bits_work);
574 flush_work(&chip->gpio_work);
575 chip->model.cleanup(chip);
576 mutex_destroy(&chip->mutex);
577 }
578
__oxygen_pci_probe(struct pci_dev * pci,int index,char * id,struct module * owner,const struct pci_device_id * ids,int (* get_model)(struct oxygen * chip,const struct pci_device_id * id))579 static int __oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
580 struct module *owner,
581 const struct pci_device_id *ids,
582 int (*get_model)(struct oxygen *chip,
583 const struct pci_device_id *id
584 )
585 )
586 {
587 struct snd_card *card;
588 struct oxygen *chip;
589 const struct pci_device_id *pci_id;
590 int err;
591
592 err = snd_devm_card_new(&pci->dev, index, id, owner,
593 sizeof(*chip), &card);
594 if (err < 0)
595 return err;
596
597 chip = card->private_data;
598 chip->card = card;
599 chip->pci = pci;
600 chip->irq = -1;
601 spin_lock_init(&chip->reg_lock);
602 mutex_init(&chip->mutex);
603 INIT_WORK(&chip->spdif_input_bits_work,
604 oxygen_spdif_input_bits_changed);
605 INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
606 init_waitqueue_head(&chip->ac97_waitqueue);
607
608 err = pcim_enable_device(pci);
609 if (err < 0)
610 return err;
611
612 err = pci_request_regions(pci, DRIVER);
613 if (err < 0) {
614 dev_err(card->dev, "cannot reserve PCI resources\n");
615 return err;
616 }
617
618 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
619 pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) {
620 dev_err(card->dev, "invalid PCI I/O range\n");
621 return -ENXIO;
622 }
623 chip->addr = pci_resource_start(pci, 0);
624
625 pci_id = oxygen_search_pci_id(chip, ids);
626 if (!pci_id)
627 return -ENODEV;
628
629 oxygen_restore_eeprom(chip, pci_id);
630 err = get_model(chip, pci_id);
631 if (err < 0)
632 return err;
633
634 if (chip->model.model_data_size) {
635 chip->model_data = devm_kzalloc(&pci->dev,
636 chip->model.model_data_size,
637 GFP_KERNEL);
638 if (!chip->model_data)
639 return -ENOMEM;
640 }
641
642 pci_set_master(pci);
643 card->private_free = oxygen_card_free;
644
645 configure_pcie_bridge(pci);
646 oxygen_init(chip);
647 chip->model.init(chip);
648
649 err = devm_request_irq(&pci->dev, pci->irq, oxygen_interrupt,
650 IRQF_SHARED, KBUILD_MODNAME, chip);
651 if (err < 0) {
652 dev_err(card->dev, "cannot grab interrupt %d\n", pci->irq);
653 return err;
654 }
655 chip->irq = pci->irq;
656 card->sync_irq = chip->irq;
657
658 strcpy(card->driver, chip->model.chip);
659 strcpy(card->shortname, chip->model.shortname);
660 sprintf(card->longname, "%s at %#lx, irq %i",
661 chip->model.longname, chip->addr, chip->irq);
662 strcpy(card->mixername, chip->model.chip);
663 snd_component_add(card, chip->model.chip);
664
665 err = oxygen_pcm_init(chip);
666 if (err < 0)
667 return err;
668
669 err = oxygen_mixer_init(chip);
670 if (err < 0)
671 return err;
672
673 if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) {
674 unsigned int info_flags =
675 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK;
676 if (chip->model.device_config & MIDI_OUTPUT)
677 info_flags |= MPU401_INFO_OUTPUT;
678 if (chip->model.device_config & MIDI_INPUT)
679 info_flags |= MPU401_INFO_INPUT;
680 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
681 chip->addr + OXYGEN_MPU401,
682 info_flags, -1, &chip->midi);
683 if (err < 0)
684 return err;
685 }
686
687 oxygen_proc_init(chip);
688
689 spin_lock_irq(&chip->reg_lock);
690 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
691 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
692 if (chip->has_ac97_0 | chip->has_ac97_1)
693 chip->interrupt_mask |= OXYGEN_INT_AC97;
694 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
695 spin_unlock_irq(&chip->reg_lock);
696
697 err = snd_card_register(card);
698 if (err < 0)
699 return err;
700
701 pci_set_drvdata(pci, card);
702 return 0;
703 }
704
oxygen_pci_probe(struct pci_dev * pci,int index,char * id,struct module * owner,const struct pci_device_id * ids,int (* get_model)(struct oxygen * chip,const struct pci_device_id * id))705 int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
706 struct module *owner,
707 const struct pci_device_id *ids,
708 int (*get_model)(struct oxygen *chip,
709 const struct pci_device_id *id))
710 {
711 return snd_card_free_on_error(&pci->dev,
712 __oxygen_pci_probe(pci, index, id, owner, ids, get_model));
713 }
714 EXPORT_SYMBOL(oxygen_pci_probe);
715
716 #ifdef CONFIG_PM_SLEEP
oxygen_pci_suspend(struct device * dev)717 static int oxygen_pci_suspend(struct device *dev)
718 {
719 struct snd_card *card = dev_get_drvdata(dev);
720 struct oxygen *chip = card->private_data;
721 unsigned int saved_interrupt_mask;
722
723 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
724
725 if (chip->model.suspend)
726 chip->model.suspend(chip);
727
728 spin_lock_irq(&chip->reg_lock);
729 saved_interrupt_mask = chip->interrupt_mask;
730 chip->interrupt_mask = 0;
731 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
732 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
733 spin_unlock_irq(&chip->reg_lock);
734
735 flush_work(&chip->spdif_input_bits_work);
736 flush_work(&chip->gpio_work);
737 chip->interrupt_mask = saved_interrupt_mask;
738 return 0;
739 }
740
741 static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
742 0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
743 0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
744 };
745 static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
746 { 0x18284fa2, 0x03060000 },
747 { 0x00007fa6, 0x00200000 }
748 };
749
is_bit_set(const u32 * bitmap,unsigned int bit)750 static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
751 {
752 return bitmap[bit / 32] & (1 << (bit & 31));
753 }
754
oxygen_restore_ac97(struct oxygen * chip,unsigned int codec)755 static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec)
756 {
757 unsigned int i;
758
759 oxygen_write_ac97(chip, codec, AC97_RESET, 0);
760 msleep(1);
761 for (i = 1; i < 0x40; ++i)
762 if (is_bit_set(ac97_registers_to_restore[codec], i))
763 oxygen_write_ac97(chip, codec, i * 2,
764 chip->saved_ac97_registers[codec][i]);
765 }
766
oxygen_pci_resume(struct device * dev)767 static int oxygen_pci_resume(struct device *dev)
768 {
769 struct snd_card *card = dev_get_drvdata(dev);
770 struct oxygen *chip = card->private_data;
771 unsigned int i;
772
773 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
774 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
775 for (i = 0; i < OXYGEN_IO_SIZE; ++i)
776 if (is_bit_set(registers_to_restore, i))
777 oxygen_write8(chip, i, chip->saved_registers._8[i]);
778 if (chip->has_ac97_0)
779 oxygen_restore_ac97(chip, 0);
780 if (chip->has_ac97_1)
781 oxygen_restore_ac97(chip, 1);
782
783 if (chip->model.resume)
784 chip->model.resume(chip);
785
786 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
787
788 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
789 return 0;
790 }
791
792 SIMPLE_DEV_PM_OPS(oxygen_pci_pm, oxygen_pci_suspend, oxygen_pci_resume);
793 EXPORT_SYMBOL(oxygen_pci_pm);
794 #endif /* CONFIG_PM_SLEEP */
795
oxygen_pci_shutdown(struct pci_dev * pci)796 void oxygen_pci_shutdown(struct pci_dev *pci)
797 {
798 struct snd_card *card = pci_get_drvdata(pci);
799 struct oxygen *chip = card->private_data;
800
801 oxygen_shutdown(chip);
802 chip->model.cleanup(chip);
803 }
804 EXPORT_SYMBOL(oxygen_pci_shutdown);
805