Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/sound/pci/oxygen/oxygen_lib.c

  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 <linux/module.h>
 26 #include <sound/ac97_codec.h>
 27 #include <sound/asoundef.h>
 28 #include <sound/core.h>
 29 #include <sound/info.h>
 30 #include <sound/mpu401.h>
 31 #include <sound/pcm.h>
 32 #include "oxygen.h"
 33 #include "cm9780.h"
 34 
 35 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
 36 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
 37 MODULE_LICENSE("GPL v2");
 38 
 39 #define DRIVER "oxygen"
 40 
 41 static inline int oxygen_uart_input_ready(struct oxygen *chip)
 42 {
 43         return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY);
 44 }
 45 
 46 static void oxygen_read_uart(struct oxygen *chip)
 47 {
 48         if (unlikely(!oxygen_uart_input_ready(chip))) {
 49                 /* no data, but read it anyway to clear the interrupt */
 50                 oxygen_read8(chip, OXYGEN_MPU401);
 51                 return;
 52         }
 53         do {
 54                 u8 data = oxygen_read8(chip, OXYGEN_MPU401);
 55                 if (data == MPU401_ACK)
 56                         continue;
 57                 if (chip->uart_input_count >= ARRAY_SIZE(chip->uart_input))
 58                         chip->uart_input_count = 0;
 59                 chip->uart_input[chip->uart_input_count++] = data;
 60         } while (oxygen_uart_input_ready(chip));
 61         if (chip->model.uart_input)
 62                 chip->model.uart_input(chip);
 63 }
 64 
 65 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
 66 {
 67         struct oxygen *chip = dev_id;
 68         unsigned int status, clear, elapsed_streams, i;
 69 
 70         status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
 71         if (!status)
 72                 return IRQ_NONE;
 73 
 74         spin_lock(&chip->reg_lock);
 75 
 76         clear = status & (OXYGEN_CHANNEL_A |
 77                           OXYGEN_CHANNEL_B |
 78                           OXYGEN_CHANNEL_C |
 79                           OXYGEN_CHANNEL_SPDIF |
 80                           OXYGEN_CHANNEL_MULTICH |
 81                           OXYGEN_CHANNEL_AC97 |
 82                           OXYGEN_INT_SPDIF_IN_DETECT |
 83                           OXYGEN_INT_GPIO |
 84                           OXYGEN_INT_AC97);
 85         if (clear) {
 86                 if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
 87                         chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
 88                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
 89                                chip->interrupt_mask & ~clear);
 90                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
 91                                chip->interrupt_mask);
 92         }
 93 
 94         elapsed_streams = status & chip->pcm_running;
 95 
 96         spin_unlock(&chip->reg_lock);
 97 
 98         for (i = 0; i < PCM_COUNT; ++i)
 99                 if ((elapsed_streams & (1 << i)) && chip->streams[i])
100                         snd_pcm_period_elapsed(chip->streams[i]);
101 
102         if (status & OXYGEN_INT_SPDIF_IN_DETECT) {
103                 spin_lock(&chip->reg_lock);
104                 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
105                 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
106                          OXYGEN_SPDIF_RATE_INT)) {
107                         /* write the interrupt bit(s) to clear */
108                         oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
109                         schedule_work(&chip->spdif_input_bits_work);
110                 }
111                 spin_unlock(&chip->reg_lock);
112         }
113 
114         if (status & OXYGEN_INT_GPIO)
115                 schedule_work(&chip->gpio_work);
116 
117         if (status & OXYGEN_INT_MIDI) {
118                 if (chip->midi)
119                         snd_mpu401_uart_interrupt(0, chip->midi->private_data);
120                 else
121                         oxygen_read_uart(chip);
122         }
123 
124         if (status & OXYGEN_INT_AC97)
125                 wake_up(&chip->ac97_waitqueue);
126 
127         return IRQ_HANDLED;
128 }
129 
130 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
131 {
132         struct oxygen *chip = container_of(work, struct oxygen,
133                                            spdif_input_bits_work);
134         u32 reg;
135 
136         /*
137          * This function gets called when there is new activity on the SPDIF
138          * input, or when we lose lock on the input signal, or when the rate
139          * changes.
140          */
141         msleep(1);
142         spin_lock_irq(&chip->reg_lock);
143         reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
144         if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
145                     OXYGEN_SPDIF_LOCK_STATUS))
146             == OXYGEN_SPDIF_SENSE_STATUS) {
147                 /*
148                  * If we detect activity on the SPDIF input but cannot lock to
149                  * a signal, the clock bit is likely to be wrong.
150                  */
151                 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
152                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
153                 spin_unlock_irq(&chip->reg_lock);
154                 msleep(1);
155                 spin_lock_irq(&chip->reg_lock);
156                 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
157                 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
158                             OXYGEN_SPDIF_LOCK_STATUS))
159                     == OXYGEN_SPDIF_SENSE_STATUS) {
160                         /* nothing detected with either clock; give up */
161                         if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
162                             == OXYGEN_SPDIF_IN_CLOCK_192) {
163                                 /*
164                                  * Reset clock to <= 96 kHz because this is
165                                  * more likely to be received next time.
166                                  */
167                                 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
168                                 reg |= OXYGEN_SPDIF_IN_CLOCK_96;
169                                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
170                         }
171                 }
172         }
173         spin_unlock_irq(&chip->reg_lock);
174 
175         if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
176                 spin_lock_irq(&chip->reg_lock);
177                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
178                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
179                                chip->interrupt_mask);
180                 spin_unlock_irq(&chip->reg_lock);
181 
182                 /*
183                  * We don't actually know that any channel status bits have
184                  * changed, but let's send a notification just to be sure.
185                  */
186                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
187                                &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
188         }
189 }
190 
191 static void oxygen_gpio_changed(struct work_struct *work)
192 {
193         struct oxygen *chip = container_of(work, struct oxygen, gpio_work);
194 
195         if (chip->model.gpio_changed)
196                 chip->model.gpio_changed(chip);
197 }
198 
199 #ifdef CONFIG_PROC_FS
200 static void oxygen_proc_read(struct snd_info_entry *entry,
201                              struct snd_info_buffer *buffer)
202 {
203         struct oxygen *chip = entry->private_data;
204         int i, j;
205 
206         switch (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_PACKAGE_ID_MASK) {
207         case OXYGEN_PACKAGE_ID_8786: i = '6'; break;
208         case OXYGEN_PACKAGE_ID_8787: i = '7'; break;
209         case OXYGEN_PACKAGE_ID_8788: i = '8'; break;
210         default:                     i = '?'; break;
211         }
212         snd_iprintf(buffer, "CMI878%c:\n", i);
213         for (i = 0; i < OXYGEN_IO_SIZE; i += 0x10) {
214                 snd_iprintf(buffer, "%02x:", i);
215                 for (j = 0; j < 0x10; ++j)
216                         snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
217                 snd_iprintf(buffer, "\n");
218         }
219         if (mutex_lock_interruptible(&chip->mutex) < 0)
220                 return;
221         if (chip->has_ac97_0) {
222                 snd_iprintf(buffer, "\nAC97:\n");
223                 for (i = 0; i < 0x80; i += 0x10) {
224                         snd_iprintf(buffer, "%02x:", i);
225                         for (j = 0; j < 0x10; j += 2)
226                                 snd_iprintf(buffer, " %04x",
227                                             oxygen_read_ac97(chip, 0, i + j));
228                         snd_iprintf(buffer, "\n");
229                 }
230         }
231         if (chip->has_ac97_1) {
232                 snd_iprintf(buffer, "\nAC97 2:\n");
233                 for (i = 0; i < 0x80; i += 0x10) {
234                         snd_iprintf(buffer, "%02x:", i);
235                         for (j = 0; j < 0x10; j += 2)
236                                 snd_iprintf(buffer, " %04x",
237                                             oxygen_read_ac97(chip, 1, i + j));
238                         snd_iprintf(buffer, "\n");
239                 }
240         }
241         mutex_unlock(&chip->mutex);
242         if (chip->model.dump_registers)
243                 chip->model.dump_registers(chip, buffer);
244 }
245 
246 static void oxygen_proc_init(struct oxygen *chip)
247 {
248         struct snd_info_entry *entry;
249 
250         if (!snd_card_proc_new(chip->card, "oxygen", &entry))
251                 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
252 }
253 #else
254 #define oxygen_proc_init(chip)
255 #endif
256 
257 static const struct pci_device_id *
258 oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
259 {
260         u16 subdevice;
261 
262         /*
263          * Make sure the EEPROM pins are available, i.e., not used for SPI.
264          * (This function is called before we initialize or use SPI.)
265          */
266         oxygen_clear_bits8(chip, OXYGEN_FUNCTION,
267                            OXYGEN_FUNCTION_ENABLE_SPI_4_5);
268         /*
269          * Read the subsystem device ID directly from the EEPROM, because the
270          * chip didn't if the first EEPROM word was overwritten.
271          */
272         subdevice = oxygen_read_eeprom(chip, 2);
273         /* use default ID if EEPROM is missing */
274         if (subdevice == 0xffff && oxygen_read_eeprom(chip, 1) == 0xffff)
275                 subdevice = 0x8788;
276         /*
277          * We use only the subsystem device ID for searching because it is
278          * unique even without the subsystem vendor ID, which may have been
279          * overwritten in the EEPROM.
280          */
281         for (; ids->vendor; ++ids)
282                 if (ids->subdevice == subdevice &&
283                     ids->driver_data != BROKEN_EEPROM_DRIVER_DATA)
284                         return ids;
285         return NULL;
286 }
287 
288 static void oxygen_restore_eeprom(struct oxygen *chip,
289                                   const struct pci_device_id *id)
290 {
291         u16 eeprom_id;
292 
293         eeprom_id = oxygen_read_eeprom(chip, 0);
294         if (eeprom_id != OXYGEN_EEPROM_ID &&
295             (eeprom_id != 0xffff || id->subdevice != 0x8788)) {
296                 /*
297                  * This function gets called only when a known card model has
298                  * been detected, i.e., we know there is a valid subsystem
299                  * product ID at index 2 in the EEPROM.  Therefore, we have
300                  * been able to deduce the correct subsystem vendor ID, and
301                  * this is enough information to restore the original EEPROM
302                  * contents.
303                  */
304                 oxygen_write_eeprom(chip, 1, id->subvendor);
305                 oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID);
306 
307                 oxygen_set_bits8(chip, OXYGEN_MISC,
308                                  OXYGEN_MISC_WRITE_PCI_SUBID);
309                 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID,
310                                       id->subvendor);
311                 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID,
312                                       id->subdevice);
313                 oxygen_clear_bits8(chip, OXYGEN_MISC,
314                                    OXYGEN_MISC_WRITE_PCI_SUBID);
315 
316                 dev_info(chip->card->dev, "EEPROM ID restored\n");
317         }
318 }
319 
320 static void configure_pcie_bridge(struct pci_dev *pci)
321 {
322         enum { PEX811X, PI7C9X110 };
323         static const struct pci_device_id bridge_ids[] = {
324                 { PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },
325                 { PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },
326                 { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },
327                 { }
328         };
329         struct pci_dev *bridge;
330         const struct pci_device_id *id;
331         u32 tmp;
332 
333         if (!pci->bus || !pci->bus->self)
334                 return;
335         bridge = pci->bus->self;
336 
337         id = pci_match_id(bridge_ids, bridge);
338         if (!id)
339                 return;
340 
341         switch (id->driver_data) {
342         case PEX811X:   /* PLX PEX8111/PEX8112 PCIe/PCI bridge */
343                 pci_read_config_dword(bridge, 0x48, &tmp);
344                 tmp |= 1;       /* enable blind prefetching */
345                 tmp |= 1 << 11; /* enable beacon generation */
346                 pci_write_config_dword(bridge, 0x48, tmp);
347 
348                 pci_write_config_dword(bridge, 0x84, 0x0c);
349                 pci_read_config_dword(bridge, 0x88, &tmp);
350                 tmp &= ~(7 << 27);
351                 tmp |= 2 << 27; /* set prefetch size to 128 bytes */
352                 pci_write_config_dword(bridge, 0x88, tmp);
353                 break;
354 
355         case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */
356                 pci_read_config_dword(bridge, 0x40, &tmp);
357                 tmp |= 1;       /* park the PCI arbiter to the sound chip */
358                 pci_write_config_dword(bridge, 0x40, tmp);
359                 break;
360         }
361 }
362 
363 static void oxygen_init(struct oxygen *chip)
364 {
365         unsigned int i;
366 
367         chip->dac_routing = 1;
368         for (i = 0; i < 8; ++i)
369                 chip->dac_volume[i] = chip->model.dac_volume_min;
370         chip->dac_mute = 1;
371         chip->spdif_playback_enable = 1;
372         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
373                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
374         chip->spdif_pcm_bits = chip->spdif_bits;
375 
376         if (!(oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2))
377                 oxygen_set_bits8(chip, OXYGEN_MISC,
378                                  OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
379 
380         i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
381         chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
382         chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
383 
384         oxygen_write8_masked(chip, OXYGEN_FUNCTION,
385                              OXYGEN_FUNCTION_RESET_CODEC |
386                              chip->model.function_flags,
387                              OXYGEN_FUNCTION_RESET_CODEC |
388                              OXYGEN_FUNCTION_2WIRE_SPI_MASK |
389                              OXYGEN_FUNCTION_ENABLE_SPI_4_5);
390         oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
391         oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
392         oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
393                       OXYGEN_PLAY_CHANNELS_2 |
394                       OXYGEN_DMA_A_BURST_8 |
395                       OXYGEN_DMA_MULTICH_BURST_8);
396         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
397         oxygen_write8_masked(chip, OXYGEN_MISC,
398                              chip->model.misc_flags,
399                              OXYGEN_MISC_WRITE_PCI_SUBID |
400                              OXYGEN_MISC_REC_C_FROM_SPDIF |
401                              OXYGEN_MISC_REC_B_FROM_AC97 |
402                              OXYGEN_MISC_REC_A_FROM_MULTICH |
403                              OXYGEN_MISC_MIDI);
404         oxygen_write8(chip, OXYGEN_REC_FORMAT,
405                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
406                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
407                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
408         oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
409                       (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
410                       (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
411         oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
412         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
413                        OXYGEN_RATE_48000 |
414                        chip->model.dac_i2s_format |
415                        OXYGEN_I2S_MCLK(chip->model.dac_mclks) |
416                        OXYGEN_I2S_BITS_16 |
417                        OXYGEN_I2S_MASTER |
418                        OXYGEN_I2S_BCLK_64);
419         if (chip->model.device_config & CAPTURE_0_FROM_I2S_1)
420                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
421                                OXYGEN_RATE_48000 |
422                                chip->model.adc_i2s_format |
423                                OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
424                                OXYGEN_I2S_BITS_16 |
425                                OXYGEN_I2S_MASTER |
426                                OXYGEN_I2S_BCLK_64);
427         else
428                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
429                                OXYGEN_I2S_MASTER |
430                                OXYGEN_I2S_MUTE_MCLK);
431         if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 |
432                                          CAPTURE_2_FROM_I2S_2))
433                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
434                                OXYGEN_RATE_48000 |
435                                chip->model.adc_i2s_format |
436                                OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
437                                OXYGEN_I2S_BITS_16 |
438                                OXYGEN_I2S_MASTER |
439                                OXYGEN_I2S_BCLK_64);
440         else
441                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
442                                OXYGEN_I2S_MASTER |
443                                OXYGEN_I2S_MUTE_MCLK);
444         oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
445                        OXYGEN_I2S_MASTER |
446                        OXYGEN_I2S_MUTE_MCLK);
447         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
448                             OXYGEN_SPDIF_OUT_ENABLE |
449                             OXYGEN_SPDIF_LOOPBACK);
450         if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
451                 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
452                                       OXYGEN_SPDIF_SENSE_MASK |
453                                       OXYGEN_SPDIF_LOCK_MASK |
454                                       OXYGEN_SPDIF_RATE_MASK |
455                                       OXYGEN_SPDIF_LOCK_PAR |
456                                       OXYGEN_SPDIF_IN_CLOCK_96,
457                                       OXYGEN_SPDIF_SENSE_MASK |
458                                       OXYGEN_SPDIF_LOCK_MASK |
459                                       OXYGEN_SPDIF_RATE_MASK |
460                                       OXYGEN_SPDIF_SENSE_PAR |
461                                       OXYGEN_SPDIF_LOCK_PAR |
462                                       OXYGEN_SPDIF_IN_CLOCK_MASK);
463         else
464                 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
465                                     OXYGEN_SPDIF_SENSE_MASK |
466                                     OXYGEN_SPDIF_LOCK_MASK |
467                                     OXYGEN_SPDIF_RATE_MASK);
468         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
469         oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
470                        OXYGEN_2WIRE_LENGTH_8 |
471                        OXYGEN_2WIRE_INTERRUPT_MASK |
472                        OXYGEN_2WIRE_SPEED_STANDARD);
473         oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
474         oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
475         oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
476         oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
477                        OXYGEN_PLAY_MULTICH_I2S_DAC |
478                        OXYGEN_PLAY_SPDIF_SPDIF |
479                        (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
480                        (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
481                        (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
482                        (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
483         oxygen_write8(chip, OXYGEN_REC_ROUTING,
484                       OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
485                       OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
486                       OXYGEN_REC_C_ROUTE_SPDIF);
487         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
488         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
489                       (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
490                       (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
491                       (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
492                       (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
493 
494         if (chip->has_ac97_0 | chip->has_ac97_1)
495                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
496                               OXYGEN_AC97_INT_READ_DONE |
497                               OXYGEN_AC97_INT_WRITE_DONE);
498         else
499                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
500         oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
501         oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
502         if (!(chip->has_ac97_0 | chip->has_ac97_1))
503                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
504                                   OXYGEN_AC97_CLOCK_DISABLE);
505         if (!chip->has_ac97_0) {
506                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
507                                   OXYGEN_AC97_NO_CODEC_0);
508         } else {
509                 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
510                 msleep(1);
511                 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
512                                      CM9780_GPIO0IO | CM9780_GPIO1IO);
513                 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
514                                      CM9780_BSTSEL | CM9780_STRO_MIC |
515                                      CM9780_MIX2FR | CM9780_PCBSW);
516                 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
517                                      CM9780_RSOE | CM9780_CBOE |
518                                      CM9780_SSOE | CM9780_FROE |
519                                      CM9780_MIC2MIC | CM9780_LI2LI);
520                 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
521                 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
522                 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
523                 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
524                 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
525                 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
526                 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
527                 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
528                 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
529                 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
530                 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS,
531                                        CM9780_GPO0);
532                 /* power down unused ADCs and DACs */
533                 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
534                                      AC97_PD_PR0 | AC97_PD_PR1);
535                 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
536                                      AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
537         }
538         if (chip->has_ac97_1) {
539                 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
540                                   OXYGEN_AC97_CODEC1_SLOT3 |
541                                   OXYGEN_AC97_CODEC1_SLOT4);
542                 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
543                 msleep(1);
544                 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
545                 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
546                 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
547                 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
548                 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
549                 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
550                 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
551                 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
552                 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
553                 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
554                 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
555                 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
556         }
557 }
558 
559 static void oxygen_shutdown(struct oxygen *chip)
560 {
561         spin_lock_irq(&chip->reg_lock);
562         chip->interrupt_mask = 0;
563         chip->pcm_running = 0;
564         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
565         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
566         spin_unlock_irq(&chip->reg_lock);
567 }
568 
569 static void oxygen_card_free(struct snd_card *card)
570 {
571         struct oxygen *chip = card->private_data;
572 
573         oxygen_shutdown(chip);
574         if (chip->irq >= 0)
575                 free_irq(chip->irq, chip);
576         flush_work(&chip->spdif_input_bits_work);
577         flush_work(&chip->gpio_work);
578         chip->model.cleanup(chip);
579         kfree(chip->model_data);
580         mutex_destroy(&chip->mutex);
581         pci_release_regions(chip->pci);
582         pci_disable_device(chip->pci);
583 }
584 
585 int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
586                      struct module *owner,
587                      const struct pci_device_id *ids,
588                      int (*get_model)(struct oxygen *chip,
589                                       const struct pci_device_id *id
590                                      )
591                     )
592 {
593         struct snd_card *card;
594         struct oxygen *chip;
595         const struct pci_device_id *pci_id;
596         int err;
597 
598         err = snd_card_new(&pci->dev, index, id, owner,
599                            sizeof(*chip), &card);
600         if (err < 0)
601                 return err;
602 
603         chip = card->private_data;
604         chip->card = card;
605         chip->pci = pci;
606         chip->irq = -1;
607         spin_lock_init(&chip->reg_lock);
608         mutex_init(&chip->mutex);
609         INIT_WORK(&chip->spdif_input_bits_work,
610                   oxygen_spdif_input_bits_changed);
611         INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
612         init_waitqueue_head(&chip->ac97_waitqueue);
613 
614         err = pci_enable_device(pci);
615         if (err < 0)
616                 goto err_card;
617 
618         err = pci_request_regions(pci, DRIVER);
619         if (err < 0) {
620                 dev_err(card->dev, "cannot reserve PCI resources\n");
621                 goto err_pci_enable;
622         }
623 
624         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
625             pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) {
626                 dev_err(card->dev, "invalid PCI I/O range\n");
627                 err = -ENXIO;
628                 goto err_pci_regions;
629         }
630         chip->addr = pci_resource_start(pci, 0);
631 
632         pci_id = oxygen_search_pci_id(chip, ids);
633         if (!pci_id) {
634                 err = -ENODEV;
635                 goto err_pci_regions;
636         }
637         oxygen_restore_eeprom(chip, pci_id);
638         err = get_model(chip, pci_id);
639         if (err < 0)
640                 goto err_pci_regions;
641 
642         if (chip->model.model_data_size) {
643                 chip->model_data = kzalloc(chip->model.model_data_size,
644                                            GFP_KERNEL);
645                 if (!chip->model_data) {
646                         err = -ENOMEM;
647                         goto err_pci_regions;
648                 }
649         }
650 
651         pci_set_master(pci);
652         card->private_free = oxygen_card_free;
653 
654         configure_pcie_bridge(pci);
655         oxygen_init(chip);
656         chip->model.init(chip);
657 
658         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
659                           KBUILD_MODNAME, chip);
660         if (err < 0) {
661                 dev_err(card->dev, "cannot grab interrupt %d\n", pci->irq);
662                 goto err_card;
663         }
664         chip->irq = pci->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 
712 err_pci_regions:
713         pci_release_regions(pci);
714 err_pci_enable:
715         pci_disable_device(pci);
716 err_card:
717         snd_card_free(card);
718         return err;
719 }
720 EXPORT_SYMBOL(oxygen_pci_probe);
721 
722 void oxygen_pci_remove(struct pci_dev *pci)
723 {
724         snd_card_free(pci_get_drvdata(pci));
725 }
726 EXPORT_SYMBOL(oxygen_pci_remove);
727 
728 #ifdef CONFIG_PM_SLEEP
729 static int oxygen_pci_suspend(struct device *dev)
730 {
731         struct pci_dev *pci = to_pci_dev(dev);
732         struct snd_card *card = dev_get_drvdata(dev);
733         struct oxygen *chip = card->private_data;
734         unsigned int i, saved_interrupt_mask;
735 
736         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
737 
738         for (i = 0; i < PCM_COUNT; ++i)
739                 if (chip->streams[i])
740                         snd_pcm_suspend(chip->streams[i]);
741 
742         if (chip->model.suspend)
743                 chip->model.suspend(chip);
744 
745         spin_lock_irq(&chip->reg_lock);
746         saved_interrupt_mask = chip->interrupt_mask;
747         chip->interrupt_mask = 0;
748         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
749         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
750         spin_unlock_irq(&chip->reg_lock);
751 
752         synchronize_irq(chip->irq);
753         flush_work(&chip->spdif_input_bits_work);
754         flush_work(&chip->gpio_work);
755         chip->interrupt_mask = saved_interrupt_mask;
756 
757         pci_disable_device(pci);
758         pci_save_state(pci);
759         pci_set_power_state(pci, PCI_D3hot);
760         return 0;
761 }
762 
763 static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
764         0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
765         0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
766 };
767 static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
768         { 0x18284fa2, 0x03060000 },
769         { 0x00007fa6, 0x00200000 }
770 };
771 
772 static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
773 {
774         return bitmap[bit / 32] & (1 << (bit & 31));
775 }
776 
777 static 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 
789 static int oxygen_pci_resume(struct device *dev)
790 {
791         struct pci_dev *pci = to_pci_dev(dev);
792         struct snd_card *card = dev_get_drvdata(dev);
793         struct oxygen *chip = card->private_data;
794         unsigned int i;
795 
796         pci_set_power_state(pci, PCI_D0);
797         pci_restore_state(pci);
798         if (pci_enable_device(pci) < 0) {
799                 dev_err(dev, "cannot reenable device");
800                 snd_card_disconnect(card);
801                 return -EIO;
802         }
803         pci_set_master(pci);
804 
805         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
806         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
807         for (i = 0; i < OXYGEN_IO_SIZE; ++i)
808                 if (is_bit_set(registers_to_restore, i))
809                         oxygen_write8(chip, i, chip->saved_registers._8[i]);
810         if (chip->has_ac97_0)
811                 oxygen_restore_ac97(chip, 0);
812         if (chip->has_ac97_1)
813                 oxygen_restore_ac97(chip, 1);
814 
815         if (chip->model.resume)
816                 chip->model.resume(chip);
817 
818         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
819 
820         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
821         return 0;
822 }
823 
824 SIMPLE_DEV_PM_OPS(oxygen_pci_pm, oxygen_pci_suspend, oxygen_pci_resume);
825 EXPORT_SYMBOL(oxygen_pci_pm);
826 #endif /* CONFIG_PM_SLEEP */
827 
828 void oxygen_pci_shutdown(struct pci_dev *pci)
829 {
830         struct snd_card *card = pci_get_drvdata(pci);
831         struct oxygen *chip = card->private_data;
832 
833         oxygen_shutdown(chip);
834         chip->model.cleanup(chip);
835 }
836 EXPORT_SYMBOL(oxygen_pci_shutdown);
837 

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