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Linux/sound/pci/hda/hda_intel.c

  1 /*
  2  *
  3  *  hda_intel.c - Implementation of primary alsa driver code base
  4  *                for Intel HD Audio.
  5  *
  6  *  Copyright(c) 2004 Intel Corporation. All rights reserved.
  7  *
  8  *  Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
  9  *                     PeiSen Hou <pshou@realtek.com.tw>
 10  *
 11  *  This program is free software; you can redistribute it and/or modify it
 12  *  under the terms of the GNU General Public License as published by the Free
 13  *  Software Foundation; either version 2 of the License, or (at your option)
 14  *  any later version.
 15  *
 16  *  This program is distributed in the hope that it will be useful, but WITHOUT
 17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 19  *  more details.
 20  *
 21  *  You should have received a copy of the GNU General Public License along with
 22  *  this program; if not, write to the Free Software Foundation, Inc., 59
 23  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 24  *
 25  *  CONTACTS:
 26  *
 27  *  Matt Jared          matt.jared@intel.com
 28  *  Andy Kopp           andy.kopp@intel.com
 29  *  Dan Kogan           dan.d.kogan@intel.com
 30  *
 31  *  CHANGES:
 32  *
 33  *  2004.12.01  Major rewrite by tiwai, merged the work of pshou
 34  * 
 35  */
 36 
 37 #include <linux/delay.h>
 38 #include <linux/interrupt.h>
 39 #include <linux/kernel.h>
 40 #include <linux/module.h>
 41 #include <linux/dma-mapping.h>
 42 #include <linux/moduleparam.h>
 43 #include <linux/init.h>
 44 #include <linux/slab.h>
 45 #include <linux/pci.h>
 46 #include <linux/mutex.h>
 47 #include <linux/io.h>
 48 #include <linux/pm_runtime.h>
 49 #include <linux/clocksource.h>
 50 #include <linux/time.h>
 51 #include <linux/completion.h>
 52 
 53 #ifdef CONFIG_X86
 54 /* for snoop control */
 55 #include <asm/pgtable.h>
 56 #include <asm/cacheflush.h>
 57 #endif
 58 #include <sound/core.h>
 59 #include <sound/initval.h>
 60 #include <linux/vgaarb.h>
 61 #include <linux/vga_switcheroo.h>
 62 #include <linux/firmware.h>
 63 #include "hda_codec.h"
 64 #include "hda_controller.h"
 65 #include "hda_priv.h"
 66 #include "hda_i915.h"
 67 
 68 /* position fix mode */
 69 enum {
 70         POS_FIX_AUTO,
 71         POS_FIX_LPIB,
 72         POS_FIX_POSBUF,
 73         POS_FIX_VIACOMBO,
 74         POS_FIX_COMBO,
 75 };
 76 
 77 /* Defines for ATI HD Audio support in SB450 south bridge */
 78 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
 79 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
 80 
 81 /* Defines for Nvidia HDA support */
 82 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
 83 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
 84 #define NVIDIA_HDA_ISTRM_COH          0x4d
 85 #define NVIDIA_HDA_OSTRM_COH          0x4c
 86 #define NVIDIA_HDA_ENABLE_COHBIT      0x01
 87 
 88 /* Defines for Intel SCH HDA snoop control */
 89 #define INTEL_SCH_HDA_DEVC      0x78
 90 #define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
 91 
 92 /* Define IN stream 0 FIFO size offset in VIA controller */
 93 #define VIA_IN_STREAM0_FIFO_SIZE_OFFSET 0x90
 94 /* Define VIA HD Audio Device ID*/
 95 #define VIA_HDAC_DEVICE_ID              0x3288
 96 
 97 /* max number of SDs */
 98 /* ICH, ATI and VIA have 4 playback and 4 capture */
 99 #define ICH6_NUM_CAPTURE        4
100 #define ICH6_NUM_PLAYBACK       4
101 
102 /* ULI has 6 playback and 5 capture */
103 #define ULI_NUM_CAPTURE         5
104 #define ULI_NUM_PLAYBACK        6
105 
106 /* ATI HDMI may have up to 8 playbacks and 0 capture */
107 #define ATIHDMI_NUM_CAPTURE     0
108 #define ATIHDMI_NUM_PLAYBACK    8
109 
110 /* TERA has 4 playback and 3 capture */
111 #define TERA_NUM_CAPTURE        3
112 #define TERA_NUM_PLAYBACK       4
113 
114 
115 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
116 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
117 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
118 static char *model[SNDRV_CARDS];
119 static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
120 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
121 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
122 static int probe_only[SNDRV_CARDS];
123 static int jackpoll_ms[SNDRV_CARDS];
124 static bool single_cmd;
125 static int enable_msi = -1;
126 #ifdef CONFIG_SND_HDA_PATCH_LOADER
127 static char *patch[SNDRV_CARDS];
128 #endif
129 #ifdef CONFIG_SND_HDA_INPUT_BEEP
130 static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
131                                         CONFIG_SND_HDA_INPUT_BEEP_MODE};
132 #endif
133 
134 module_param_array(index, int, NULL, 0444);
135 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
136 module_param_array(id, charp, NULL, 0444);
137 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
138 module_param_array(enable, bool, NULL, 0444);
139 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
140 module_param_array(model, charp, NULL, 0444);
141 MODULE_PARM_DESC(model, "Use the given board model.");
142 module_param_array(position_fix, int, NULL, 0444);
143 MODULE_PARM_DESC(position_fix, "DMA pointer read method."
144                  "(-1 = system default, 0 = auto, 1 = LPIB, 2 = POSBUF, 3 = VIACOMBO, 4 = COMBO).");
145 module_param_array(bdl_pos_adj, int, NULL, 0644);
146 MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
147 module_param_array(probe_mask, int, NULL, 0444);
148 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
149 module_param_array(probe_only, int, NULL, 0444);
150 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
151 module_param_array(jackpoll_ms, int, NULL, 0444);
152 MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
153 module_param(single_cmd, bool, 0444);
154 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
155                  "(for debugging only).");
156 module_param(enable_msi, bint, 0444);
157 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
158 #ifdef CONFIG_SND_HDA_PATCH_LOADER
159 module_param_array(patch, charp, NULL, 0444);
160 MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
161 #endif
162 #ifdef CONFIG_SND_HDA_INPUT_BEEP
163 module_param_array(beep_mode, bool, NULL, 0444);
164 MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
165                             "(0=off, 1=on) (default=1).");
166 #endif
167 
168 #ifdef CONFIG_PM
169 static int param_set_xint(const char *val, const struct kernel_param *kp);
170 static struct kernel_param_ops param_ops_xint = {
171         .set = param_set_xint,
172         .get = param_get_int,
173 };
174 #define param_check_xint param_check_int
175 
176 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
177 static int *power_save_addr = &power_save;
178 module_param(power_save, xint, 0644);
179 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
180                  "(in second, 0 = disable).");
181 
182 /* reset the HD-audio controller in power save mode.
183  * this may give more power-saving, but will take longer time to
184  * wake up.
185  */
186 static bool power_save_controller = 1;
187 module_param(power_save_controller, bool, 0644);
188 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
189 #else
190 static int *power_save_addr;
191 #endif /* CONFIG_PM */
192 
193 static int align_buffer_size = -1;
194 module_param(align_buffer_size, bint, 0644);
195 MODULE_PARM_DESC(align_buffer_size,
196                 "Force buffer and period sizes to be multiple of 128 bytes.");
197 
198 #ifdef CONFIG_X86
199 static bool hda_snoop = true;
200 module_param_named(snoop, hda_snoop, bool, 0444);
201 MODULE_PARM_DESC(snoop, "Enable/disable snooping");
202 #else
203 #define hda_snoop               true
204 #endif
205 
206 
207 MODULE_LICENSE("GPL");
208 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
209                          "{Intel, ICH6M},"
210                          "{Intel, ICH7},"
211                          "{Intel, ESB2},"
212                          "{Intel, ICH8},"
213                          "{Intel, ICH9},"
214                          "{Intel, ICH10},"
215                          "{Intel, PCH},"
216                          "{Intel, CPT},"
217                          "{Intel, PPT},"
218                          "{Intel, LPT},"
219                          "{Intel, LPT_LP},"
220                          "{Intel, WPT_LP},"
221                          "{Intel, HPT},"
222                          "{Intel, PBG},"
223                          "{Intel, SCH},"
224                          "{ATI, SB450},"
225                          "{ATI, SB600},"
226                          "{ATI, RS600},"
227                          "{ATI, RS690},"
228                          "{ATI, RS780},"
229                          "{ATI, R600},"
230                          "{ATI, RV630},"
231                          "{ATI, RV610},"
232                          "{ATI, RV670},"
233                          "{ATI, RV635},"
234                          "{ATI, RV620},"
235                          "{ATI, RV770},"
236                          "{VIA, VT8251},"
237                          "{VIA, VT8237A},"
238                          "{SiS, SIS966},"
239                          "{ULI, M5461}}");
240 MODULE_DESCRIPTION("Intel HDA driver");
241 
242 #if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
243 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
244 #define SUPPORT_VGA_SWITCHEROO
245 #endif
246 #endif
247 
248 
249 /*
250  */
251 
252 /* driver types */
253 enum {
254         AZX_DRIVER_ICH,
255         AZX_DRIVER_PCH,
256         AZX_DRIVER_SCH,
257         AZX_DRIVER_HDMI,
258         AZX_DRIVER_ATI,
259         AZX_DRIVER_ATIHDMI,
260         AZX_DRIVER_ATIHDMI_NS,
261         AZX_DRIVER_VIA,
262         AZX_DRIVER_SIS,
263         AZX_DRIVER_ULI,
264         AZX_DRIVER_NVIDIA,
265         AZX_DRIVER_TERA,
266         AZX_DRIVER_CTX,
267         AZX_DRIVER_CTHDA,
268         AZX_DRIVER_CMEDIA,
269         AZX_DRIVER_GENERIC,
270         AZX_NUM_DRIVERS, /* keep this as last entry */
271 };
272 
273 /* quirks for Intel PCH */
274 #define AZX_DCAPS_INTEL_PCH_NOPM \
275         (AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_BUFSIZE | \
276          AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_REVERSE_ASSIGN)
277 
278 #define AZX_DCAPS_INTEL_PCH \
279         (AZX_DCAPS_INTEL_PCH_NOPM | AZX_DCAPS_PM_RUNTIME)
280 
281 #define AZX_DCAPS_INTEL_HASWELL \
282         (AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_ALIGN_BUFSIZE | \
283          AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_PM_RUNTIME | \
284          AZX_DCAPS_I915_POWERWELL)
285 
286 /* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
287 #define AZX_DCAPS_INTEL_BROADWELL \
288         (AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_ALIGN_BUFSIZE | \
289          AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_PM_RUNTIME | \
290          AZX_DCAPS_I915_POWERWELL)
291 
292 /* quirks for ATI SB / AMD Hudson */
293 #define AZX_DCAPS_PRESET_ATI_SB \
294         (AZX_DCAPS_ATI_SNOOP | AZX_DCAPS_NO_TCSEL | \
295          AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB)
296 
297 /* quirks for ATI/AMD HDMI */
298 #define AZX_DCAPS_PRESET_ATI_HDMI \
299         (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB)
300 
301 /* quirks for Nvidia */
302 #define AZX_DCAPS_PRESET_NVIDIA \
303         (AZX_DCAPS_NVIDIA_SNOOP | AZX_DCAPS_RIRB_DELAY | AZX_DCAPS_NO_MSI |\
304          AZX_DCAPS_ALIGN_BUFSIZE | AZX_DCAPS_NO_64BIT |\
305          AZX_DCAPS_CORBRP_SELF_CLEAR)
306 
307 #define AZX_DCAPS_PRESET_CTHDA \
308         (AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_4K_BDLE_BOUNDARY)
309 
310 /*
311  * VGA-switcher support
312  */
313 #ifdef SUPPORT_VGA_SWITCHEROO
314 #define use_vga_switcheroo(chip)        ((chip)->use_vga_switcheroo)
315 #else
316 #define use_vga_switcheroo(chip)        0
317 #endif
318 
319 static char *driver_short_names[] = {
320         [AZX_DRIVER_ICH] = "HDA Intel",
321         [AZX_DRIVER_PCH] = "HDA Intel PCH",
322         [AZX_DRIVER_SCH] = "HDA Intel MID",
323         [AZX_DRIVER_HDMI] = "HDA Intel HDMI",
324         [AZX_DRIVER_ATI] = "HDA ATI SB",
325         [AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
326         [AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
327         [AZX_DRIVER_VIA] = "HDA VIA VT82xx",
328         [AZX_DRIVER_SIS] = "HDA SIS966",
329         [AZX_DRIVER_ULI] = "HDA ULI M5461",
330         [AZX_DRIVER_NVIDIA] = "HDA NVidia",
331         [AZX_DRIVER_TERA] = "HDA Teradici", 
332         [AZX_DRIVER_CTX] = "HDA Creative", 
333         [AZX_DRIVER_CTHDA] = "HDA Creative",
334         [AZX_DRIVER_CMEDIA] = "HDA C-Media",
335         [AZX_DRIVER_GENERIC] = "HD-Audio Generic",
336 };
337 
338 struct hda_intel {
339         struct azx chip;
340 
341         /* for pending irqs */
342         struct work_struct irq_pending_work;
343 
344         /* sync probing */
345         struct completion probe_wait;
346         struct work_struct probe_work;
347 
348         /* card list (for power_save trigger) */
349         struct list_head list;
350 
351         /* extra flags */
352         unsigned int irq_pending_warned:1;
353 
354         /* VGA-switcheroo setup */
355         unsigned int use_vga_switcheroo:1;
356         unsigned int vga_switcheroo_registered:1;
357         unsigned int init_failed:1; /* delayed init failed */
358 
359         /* secondary power domain for hdmi audio under vga device */
360         struct dev_pm_domain hdmi_pm_domain;
361 };
362 
363 #ifdef CONFIG_X86
364 static void __mark_pages_wc(struct azx *chip, struct snd_dma_buffer *dmab, bool on)
365 {
366         int pages;
367 
368         if (azx_snoop(chip))
369                 return;
370         if (!dmab || !dmab->area || !dmab->bytes)
371                 return;
372 
373 #ifdef CONFIG_SND_DMA_SGBUF
374         if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG) {
375                 struct snd_sg_buf *sgbuf = dmab->private_data;
376                 if (on)
377                         set_pages_array_wc(sgbuf->page_table, sgbuf->pages);
378                 else
379                         set_pages_array_wb(sgbuf->page_table, sgbuf->pages);
380                 return;
381         }
382 #endif
383 
384         pages = (dmab->bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
385         if (on)
386                 set_memory_wc((unsigned long)dmab->area, pages);
387         else
388                 set_memory_wb((unsigned long)dmab->area, pages);
389 }
390 
391 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
392                                  bool on)
393 {
394         __mark_pages_wc(chip, buf, on);
395 }
396 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
397                                    struct snd_pcm_substream *substream, bool on)
398 {
399         if (azx_dev->wc_marked != on) {
400                 __mark_pages_wc(chip, snd_pcm_get_dma_buf(substream), on);
401                 azx_dev->wc_marked = on;
402         }
403 }
404 #else
405 /* NOP for other archs */
406 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
407                                  bool on)
408 {
409 }
410 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
411                                    struct snd_pcm_substream *substream, bool on)
412 {
413 }
414 #endif
415 
416 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
417 
418 /*
419  * initialize the PCI registers
420  */
421 /* update bits in a PCI register byte */
422 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
423                             unsigned char mask, unsigned char val)
424 {
425         unsigned char data;
426 
427         pci_read_config_byte(pci, reg, &data);
428         data &= ~mask;
429         data |= (val & mask);
430         pci_write_config_byte(pci, reg, data);
431 }
432 
433 static void azx_init_pci(struct azx *chip)
434 {
435         /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
436          * TCSEL == Traffic Class Select Register, which sets PCI express QOS
437          * Ensuring these bits are 0 clears playback static on some HD Audio
438          * codecs.
439          * The PCI register TCSEL is defined in the Intel manuals.
440          */
441         if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
442                 dev_dbg(chip->card->dev, "Clearing TCSEL\n");
443                 update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
444         }
445 
446         /* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
447          * we need to enable snoop.
448          */
449         if (chip->driver_caps & AZX_DCAPS_ATI_SNOOP) {
450                 dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
451                         azx_snoop(chip));
452                 update_pci_byte(chip->pci,
453                                 ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
454                                 azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
455         }
456 
457         /* For NVIDIA HDA, enable snoop */
458         if (chip->driver_caps & AZX_DCAPS_NVIDIA_SNOOP) {
459                 dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
460                         azx_snoop(chip));
461                 update_pci_byte(chip->pci,
462                                 NVIDIA_HDA_TRANSREG_ADDR,
463                                 0x0f, NVIDIA_HDA_ENABLE_COHBITS);
464                 update_pci_byte(chip->pci,
465                                 NVIDIA_HDA_ISTRM_COH,
466                                 0x01, NVIDIA_HDA_ENABLE_COHBIT);
467                 update_pci_byte(chip->pci,
468                                 NVIDIA_HDA_OSTRM_COH,
469                                 0x01, NVIDIA_HDA_ENABLE_COHBIT);
470         }
471 
472         /* Enable SCH/PCH snoop if needed */
473         if (chip->driver_caps & AZX_DCAPS_SCH_SNOOP) {
474                 unsigned short snoop;
475                 pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
476                 if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
477                     (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
478                         snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
479                         if (!azx_snoop(chip))
480                                 snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
481                         pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
482                         pci_read_config_word(chip->pci,
483                                 INTEL_SCH_HDA_DEVC, &snoop);
484                 }
485                 dev_dbg(chip->card->dev, "SCH snoop: %s\n",
486                         (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
487                         "Disabled" : "Enabled");
488         }
489 }
490 
491 /* calculate runtime delay from LPIB */
492 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
493                                    unsigned int pos)
494 {
495         struct snd_pcm_substream *substream = azx_dev->substream;
496         int stream = substream->stream;
497         unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
498         int delay;
499 
500         if (stream == SNDRV_PCM_STREAM_PLAYBACK)
501                 delay = pos - lpib_pos;
502         else
503                 delay = lpib_pos - pos;
504         if (delay < 0) {
505                 if (delay >= azx_dev->delay_negative_threshold)
506                         delay = 0;
507                 else
508                         delay += azx_dev->bufsize;
509         }
510 
511         if (delay >= azx_dev->period_bytes) {
512                 dev_info(chip->card->dev,
513                          "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
514                          delay, azx_dev->period_bytes);
515                 delay = 0;
516                 chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
517                 chip->get_delay[stream] = NULL;
518         }
519 
520         return bytes_to_frames(substream->runtime, delay);
521 }
522 
523 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
524 
525 /* called from IRQ */
526 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
527 {
528         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
529         int ok;
530 
531         ok = azx_position_ok(chip, azx_dev);
532         if (ok == 1) {
533                 azx_dev->irq_pending = 0;
534                 return ok;
535         } else if (ok == 0 && chip->bus && chip->bus->workq) {
536                 /* bogus IRQ, process it later */
537                 azx_dev->irq_pending = 1;
538                 queue_work(chip->bus->workq, &hda->irq_pending_work);
539         }
540         return 0;
541 }
542 
543 /*
544  * Check whether the current DMA position is acceptable for updating
545  * periods.  Returns non-zero if it's OK.
546  *
547  * Many HD-audio controllers appear pretty inaccurate about
548  * the update-IRQ timing.  The IRQ is issued before actually the
549  * data is processed.  So, we need to process it afterwords in a
550  * workqueue.
551  */
552 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
553 {
554         struct snd_pcm_substream *substream = azx_dev->substream;
555         int stream = substream->stream;
556         u32 wallclk;
557         unsigned int pos;
558 
559         wallclk = azx_readl(chip, WALLCLK) - azx_dev->start_wallclk;
560         if (wallclk < (azx_dev->period_wallclk * 2) / 3)
561                 return -1;      /* bogus (too early) interrupt */
562 
563         if (chip->get_position[stream])
564                 pos = chip->get_position[stream](chip, azx_dev);
565         else { /* use the position buffer as default */
566                 pos = azx_get_pos_posbuf(chip, azx_dev);
567                 if (!pos || pos == (u32)-1) {
568                         dev_info(chip->card->dev,
569                                  "Invalid position buffer, using LPIB read method instead.\n");
570                         chip->get_position[stream] = azx_get_pos_lpib;
571                         pos = azx_get_pos_lpib(chip, azx_dev);
572                         chip->get_delay[stream] = NULL;
573                 } else {
574                         chip->get_position[stream] = azx_get_pos_posbuf;
575                         if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
576                                 chip->get_delay[stream] = azx_get_delay_from_lpib;
577                 }
578         }
579 
580         if (pos >= azx_dev->bufsize)
581                 pos = 0;
582 
583         if (WARN_ONCE(!azx_dev->period_bytes,
584                       "hda-intel: zero azx_dev->period_bytes"))
585                 return -1; /* this shouldn't happen! */
586         if (wallclk < (azx_dev->period_wallclk * 5) / 4 &&
587             pos % azx_dev->period_bytes > azx_dev->period_bytes / 2)
588                 /* NG - it's below the first next period boundary */
589                 return chip->bdl_pos_adj[chip->dev_index] ? 0 : -1;
590         azx_dev->start_wallclk += wallclk;
591         return 1; /* OK, it's fine */
592 }
593 
594 /*
595  * The work for pending PCM period updates.
596  */
597 static void azx_irq_pending_work(struct work_struct *work)
598 {
599         struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
600         struct azx *chip = &hda->chip;
601         int i, pending, ok;
602 
603         if (!hda->irq_pending_warned) {
604                 dev_info(chip->card->dev,
605                          "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
606                          chip->card->number);
607                 hda->irq_pending_warned = 1;
608         }
609 
610         for (;;) {
611                 pending = 0;
612                 spin_lock_irq(&chip->reg_lock);
613                 for (i = 0; i < chip->num_streams; i++) {
614                         struct azx_dev *azx_dev = &chip->azx_dev[i];
615                         if (!azx_dev->irq_pending ||
616                             !azx_dev->substream ||
617                             !azx_dev->running)
618                                 continue;
619                         ok = azx_position_ok(chip, azx_dev);
620                         if (ok > 0) {
621                                 azx_dev->irq_pending = 0;
622                                 spin_unlock(&chip->reg_lock);
623                                 snd_pcm_period_elapsed(azx_dev->substream);
624                                 spin_lock(&chip->reg_lock);
625                         } else if (ok < 0) {
626                                 pending = 0;    /* too early */
627                         } else
628                                 pending++;
629                 }
630                 spin_unlock_irq(&chip->reg_lock);
631                 if (!pending)
632                         return;
633                 msleep(1);
634         }
635 }
636 
637 /* clear irq_pending flags and assure no on-going workq */
638 static void azx_clear_irq_pending(struct azx *chip)
639 {
640         int i;
641 
642         spin_lock_irq(&chip->reg_lock);
643         for (i = 0; i < chip->num_streams; i++)
644                 chip->azx_dev[i].irq_pending = 0;
645         spin_unlock_irq(&chip->reg_lock);
646 }
647 
648 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
649 {
650         if (request_irq(chip->pci->irq, azx_interrupt,
651                         chip->msi ? 0 : IRQF_SHARED,
652                         KBUILD_MODNAME, chip)) {
653                 dev_err(chip->card->dev,
654                         "unable to grab IRQ %d, disabling device\n",
655                         chip->pci->irq);
656                 if (do_disconnect)
657                         snd_card_disconnect(chip->card);
658                 return -1;
659         }
660         chip->irq = chip->pci->irq;
661         pci_intx(chip->pci, !chip->msi);
662         return 0;
663 }
664 
665 /* get the current DMA position with correction on VIA chips */
666 static unsigned int azx_via_get_position(struct azx *chip,
667                                          struct azx_dev *azx_dev)
668 {
669         unsigned int link_pos, mini_pos, bound_pos;
670         unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
671         unsigned int fifo_size;
672 
673         link_pos = azx_sd_readl(chip, azx_dev, SD_LPIB);
674         if (azx_dev->substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
675                 /* Playback, no problem using link position */
676                 return link_pos;
677         }
678 
679         /* Capture */
680         /* For new chipset,
681          * use mod to get the DMA position just like old chipset
682          */
683         mod_dma_pos = le32_to_cpu(*azx_dev->posbuf);
684         mod_dma_pos %= azx_dev->period_bytes;
685 
686         /* azx_dev->fifo_size can't get FIFO size of in stream.
687          * Get from base address + offset.
688          */
689         fifo_size = readw(chip->remap_addr + VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
690 
691         if (azx_dev->insufficient) {
692                 /* Link position never gather than FIFO size */
693                 if (link_pos <= fifo_size)
694                         return 0;
695 
696                 azx_dev->insufficient = 0;
697         }
698 
699         if (link_pos <= fifo_size)
700                 mini_pos = azx_dev->bufsize + link_pos - fifo_size;
701         else
702                 mini_pos = link_pos - fifo_size;
703 
704         /* Find nearest previous boudary */
705         mod_mini_pos = mini_pos % azx_dev->period_bytes;
706         mod_link_pos = link_pos % azx_dev->period_bytes;
707         if (mod_link_pos >= fifo_size)
708                 bound_pos = link_pos - mod_link_pos;
709         else if (mod_dma_pos >= mod_mini_pos)
710                 bound_pos = mini_pos - mod_mini_pos;
711         else {
712                 bound_pos = mini_pos - mod_mini_pos + azx_dev->period_bytes;
713                 if (bound_pos >= azx_dev->bufsize)
714                         bound_pos = 0;
715         }
716 
717         /* Calculate real DMA position we want */
718         return bound_pos + mod_dma_pos;
719 }
720 
721 #ifdef CONFIG_PM
722 static DEFINE_MUTEX(card_list_lock);
723 static LIST_HEAD(card_list);
724 
725 static void azx_add_card_list(struct azx *chip)
726 {
727         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
728         mutex_lock(&card_list_lock);
729         list_add(&hda->list, &card_list);
730         mutex_unlock(&card_list_lock);
731 }
732 
733 static void azx_del_card_list(struct azx *chip)
734 {
735         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
736         mutex_lock(&card_list_lock);
737         list_del_init(&hda->list);
738         mutex_unlock(&card_list_lock);
739 }
740 
741 /* trigger power-save check at writing parameter */
742 static int param_set_xint(const char *val, const struct kernel_param *kp)
743 {
744         struct hda_intel *hda;
745         struct azx *chip;
746         struct hda_codec *c;
747         int prev = power_save;
748         int ret = param_set_int(val, kp);
749 
750         if (ret || prev == power_save)
751                 return ret;
752 
753         mutex_lock(&card_list_lock);
754         list_for_each_entry(hda, &card_list, list) {
755                 chip = &hda->chip;
756                 if (!chip->bus || chip->disabled)
757                         continue;
758                 list_for_each_entry(c, &chip->bus->codec_list, list)
759                         snd_hda_power_sync(c);
760         }
761         mutex_unlock(&card_list_lock);
762         return 0;
763 }
764 #else
765 #define azx_add_card_list(chip) /* NOP */
766 #define azx_del_card_list(chip) /* NOP */
767 #endif /* CONFIG_PM */
768 
769 #if defined(CONFIG_PM_SLEEP) || defined(SUPPORT_VGA_SWITCHEROO)
770 /*
771  * power management
772  */
773 static int azx_suspend(struct device *dev)
774 {
775         struct pci_dev *pci = to_pci_dev(dev);
776         struct snd_card *card = dev_get_drvdata(dev);
777         struct azx *chip;
778         struct hda_intel *hda;
779         struct azx_pcm *p;
780 
781         if (!card)
782                 return 0;
783 
784         chip = card->private_data;
785         hda = container_of(chip, struct hda_intel, chip);
786         if (chip->disabled || hda->init_failed)
787                 return 0;
788 
789         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
790         azx_clear_irq_pending(chip);
791         list_for_each_entry(p, &chip->pcm_list, list)
792                 snd_pcm_suspend_all(p->pcm);
793         if (chip->initialized)
794                 snd_hda_suspend(chip->bus);
795         azx_stop_chip(chip);
796         azx_enter_link_reset(chip);
797         if (chip->irq >= 0) {
798                 free_irq(chip->irq, chip);
799                 chip->irq = -1;
800         }
801 
802         if (chip->msi)
803                 pci_disable_msi(chip->pci);
804         pci_disable_device(pci);
805         pci_save_state(pci);
806         pci_set_power_state(pci, PCI_D3hot);
807         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
808                 hda_display_power(false);
809         return 0;
810 }
811 
812 static int azx_resume(struct device *dev)
813 {
814         struct pci_dev *pci = to_pci_dev(dev);
815         struct snd_card *card = dev_get_drvdata(dev);
816         struct azx *chip;
817         struct hda_intel *hda;
818 
819         if (!card)
820                 return 0;
821 
822         chip = card->private_data;
823         hda = container_of(chip, struct hda_intel, chip);
824         if (chip->disabled || hda->init_failed)
825                 return 0;
826 
827         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
828                 hda_display_power(true);
829                 haswell_set_bclk(chip);
830         }
831         pci_set_power_state(pci, PCI_D0);
832         pci_restore_state(pci);
833         if (pci_enable_device(pci) < 0) {
834                 dev_err(chip->card->dev,
835                         "pci_enable_device failed, disabling device\n");
836                 snd_card_disconnect(card);
837                 return -EIO;
838         }
839         pci_set_master(pci);
840         if (chip->msi)
841                 if (pci_enable_msi(pci) < 0)
842                         chip->msi = 0;
843         if (azx_acquire_irq(chip, 1) < 0)
844                 return -EIO;
845         azx_init_pci(chip);
846 
847         azx_init_chip(chip, true);
848 
849         snd_hda_resume(chip->bus);
850         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
851         return 0;
852 }
853 #endif /* CONFIG_PM_SLEEP || SUPPORT_VGA_SWITCHEROO */
854 
855 #ifdef CONFIG_PM_RUNTIME
856 static int azx_runtime_suspend(struct device *dev)
857 {
858         struct snd_card *card = dev_get_drvdata(dev);
859         struct azx *chip;
860         struct hda_intel *hda;
861 
862         if (!card)
863                 return 0;
864 
865         chip = card->private_data;
866         hda = container_of(chip, struct hda_intel, chip);
867         if (chip->disabled || hda->init_failed)
868                 return 0;
869 
870         if (!(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
871                 return 0;
872 
873         /* enable controller wake up event */
874         azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
875                   STATESTS_INT_MASK);
876 
877         azx_stop_chip(chip);
878         azx_enter_link_reset(chip);
879         azx_clear_irq_pending(chip);
880         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
881                 hda_display_power(false);
882 
883         return 0;
884 }
885 
886 static int azx_runtime_resume(struct device *dev)
887 {
888         struct snd_card *card = dev_get_drvdata(dev);
889         struct azx *chip;
890         struct hda_intel *hda;
891         struct hda_bus *bus;
892         struct hda_codec *codec;
893         int status;
894 
895         if (!card)
896                 return 0;
897 
898         chip = card->private_data;
899         hda = container_of(chip, struct hda_intel, chip);
900         if (chip->disabled || hda->init_failed)
901                 return 0;
902 
903         if (!(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
904                 return 0;
905 
906         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
907                 hda_display_power(true);
908                 haswell_set_bclk(chip);
909         }
910 
911         /* Read STATESTS before controller reset */
912         status = azx_readw(chip, STATESTS);
913 
914         azx_init_pci(chip);
915         azx_init_chip(chip, true);
916 
917         bus = chip->bus;
918         if (status && bus) {
919                 list_for_each_entry(codec, &bus->codec_list, list)
920                         if (status & (1 << codec->addr))
921                                 queue_delayed_work(codec->bus->workq,
922                                                    &codec->jackpoll_work, codec->jackpoll_interval);
923         }
924 
925         /* disable controller Wake Up event*/
926         azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
927                         ~STATESTS_INT_MASK);
928 
929         return 0;
930 }
931 
932 static int azx_runtime_idle(struct device *dev)
933 {
934         struct snd_card *card = dev_get_drvdata(dev);
935         struct azx *chip;
936         struct hda_intel *hda;
937 
938         if (!card)
939                 return 0;
940 
941         chip = card->private_data;
942         hda = container_of(chip, struct hda_intel, chip);
943         if (chip->disabled || hda->init_failed)
944                 return 0;
945 
946         if (!power_save_controller ||
947             !(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
948                 return -EBUSY;
949 
950         return 0;
951 }
952 
953 #endif /* CONFIG_PM_RUNTIME */
954 
955 #ifdef CONFIG_PM
956 static const struct dev_pm_ops azx_pm = {
957         SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
958         SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
959 };
960 
961 #define AZX_PM_OPS      &azx_pm
962 #else
963 #define AZX_PM_OPS      NULL
964 #endif /* CONFIG_PM */
965 
966 
967 static int azx_probe_continue(struct azx *chip);
968 
969 #ifdef SUPPORT_VGA_SWITCHEROO
970 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
971 
972 static void azx_vs_set_state(struct pci_dev *pci,
973                              enum vga_switcheroo_state state)
974 {
975         struct snd_card *card = pci_get_drvdata(pci);
976         struct azx *chip = card->private_data;
977         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
978         bool disabled;
979 
980         wait_for_completion(&hda->probe_wait);
981         if (hda->init_failed)
982                 return;
983 
984         disabled = (state == VGA_SWITCHEROO_OFF);
985         if (chip->disabled == disabled)
986                 return;
987 
988         if (!chip->bus) {
989                 chip->disabled = disabled;
990                 if (!disabled) {
991                         dev_info(chip->card->dev,
992                                  "Start delayed initialization\n");
993                         if (azx_probe_continue(chip) < 0) {
994                                 dev_err(chip->card->dev, "initialization error\n");
995                                 hda->init_failed = true;
996                         }
997                 }
998         } else {
999                 dev_info(chip->card->dev, "%s via VGA-switcheroo\n",
1000                          disabled ? "Disabling" : "Enabling");
1001                 if (disabled) {
1002                         pm_runtime_put_sync_suspend(card->dev);
1003                         azx_suspend(card->dev);
1004                         /* when we get suspended by vga switcheroo we end up in D3cold,
1005                          * however we have no ACPI handle, so pci/acpi can't put us there,
1006                          * put ourselves there */
1007                         pci->current_state = PCI_D3cold;
1008                         chip->disabled = true;
1009                         if (snd_hda_lock_devices(chip->bus))
1010                                 dev_warn(chip->card->dev,
1011                                          "Cannot lock devices!\n");
1012                 } else {
1013                         snd_hda_unlock_devices(chip->bus);
1014                         pm_runtime_get_noresume(card->dev);
1015                         chip->disabled = false;
1016                         azx_resume(card->dev);
1017                 }
1018         }
1019 }
1020 
1021 static bool azx_vs_can_switch(struct pci_dev *pci)
1022 {
1023         struct snd_card *card = pci_get_drvdata(pci);
1024         struct azx *chip = card->private_data;
1025         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1026 
1027         wait_for_completion(&hda->probe_wait);
1028         if (hda->init_failed)
1029                 return false;
1030         if (chip->disabled || !chip->bus)
1031                 return true;
1032         if (snd_hda_lock_devices(chip->bus))
1033                 return false;
1034         snd_hda_unlock_devices(chip->bus);
1035         return true;
1036 }
1037 
1038 static void init_vga_switcheroo(struct azx *chip)
1039 {
1040         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1041         struct pci_dev *p = get_bound_vga(chip->pci);
1042         if (p) {
1043                 dev_info(chip->card->dev,
1044                          "Handle VGA-switcheroo audio client\n");
1045                 hda->use_vga_switcheroo = 1;
1046                 pci_dev_put(p);
1047         }
1048 }
1049 
1050 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1051         .set_gpu_state = azx_vs_set_state,
1052         .can_switch = azx_vs_can_switch,
1053 };
1054 
1055 static int register_vga_switcheroo(struct azx *chip)
1056 {
1057         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1058         int err;
1059 
1060         if (!hda->use_vga_switcheroo)
1061                 return 0;
1062         /* FIXME: currently only handling DIS controller
1063          * is there any machine with two switchable HDMI audio controllers?
1064          */
1065         err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops,
1066                                                     VGA_SWITCHEROO_DIS,
1067                                                     chip->bus != NULL);
1068         if (err < 0)
1069                 return err;
1070         hda->vga_switcheroo_registered = 1;
1071 
1072         /* register as an optimus hdmi audio power domain */
1073         vga_switcheroo_init_domain_pm_optimus_hdmi_audio(chip->card->dev,
1074                                                          &hda->hdmi_pm_domain);
1075         return 0;
1076 }
1077 #else
1078 #define init_vga_switcheroo(chip)               /* NOP */
1079 #define register_vga_switcheroo(chip)           0
1080 #define check_hdmi_disabled(pci)        false
1081 #endif /* SUPPORT_VGA_SWITCHER */
1082 
1083 /*
1084  * destructor
1085  */
1086 static int azx_free(struct azx *chip)
1087 {
1088         struct pci_dev *pci = chip->pci;
1089         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1090         int i;
1091 
1092         if ((chip->driver_caps & AZX_DCAPS_PM_RUNTIME)
1093                         && chip->running)
1094                 pm_runtime_get_noresume(&pci->dev);
1095 
1096         azx_del_card_list(chip);
1097 
1098         azx_notifier_unregister(chip);
1099 
1100         hda->init_failed = 1; /* to be sure */
1101         complete_all(&hda->probe_wait);
1102 
1103         if (use_vga_switcheroo(hda)) {
1104                 if (chip->disabled && chip->bus)
1105                         snd_hda_unlock_devices(chip->bus);
1106                 if (hda->vga_switcheroo_registered)
1107                         vga_switcheroo_unregister_client(chip->pci);
1108         }
1109 
1110         if (chip->initialized) {
1111                 azx_clear_irq_pending(chip);
1112                 for (i = 0; i < chip->num_streams; i++)
1113                         azx_stream_stop(chip, &chip->azx_dev[i]);
1114                 azx_stop_chip(chip);
1115         }
1116 
1117         if (chip->irq >= 0)
1118                 free_irq(chip->irq, (void*)chip);
1119         if (chip->msi)
1120                 pci_disable_msi(chip->pci);
1121         if (chip->remap_addr)
1122                 iounmap(chip->remap_addr);
1123 
1124         azx_free_stream_pages(chip);
1125         if (chip->region_requested)
1126                 pci_release_regions(chip->pci);
1127         pci_disable_device(chip->pci);
1128         kfree(chip->azx_dev);
1129 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1130         if (chip->fw)
1131                 release_firmware(chip->fw);
1132 #endif
1133         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1134                 hda_display_power(false);
1135                 hda_i915_exit();
1136         }
1137         kfree(hda);
1138 
1139         return 0;
1140 }
1141 
1142 static int azx_dev_free(struct snd_device *device)
1143 {
1144         return azx_free(device->device_data);
1145 }
1146 
1147 #ifdef SUPPORT_VGA_SWITCHEROO
1148 /*
1149  * Check of disabled HDMI controller by vga-switcheroo
1150  */
1151 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1152 {
1153         struct pci_dev *p;
1154 
1155         /* check only discrete GPU */
1156         switch (pci->vendor) {
1157         case PCI_VENDOR_ID_ATI:
1158         case PCI_VENDOR_ID_AMD:
1159         case PCI_VENDOR_ID_NVIDIA:
1160                 if (pci->devfn == 1) {
1161                         p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1162                                                         pci->bus->number, 0);
1163                         if (p) {
1164                                 if ((p->class >> 8) == PCI_CLASS_DISPLAY_VGA)
1165                                         return p;
1166                                 pci_dev_put(p);
1167                         }
1168                 }
1169                 break;
1170         }
1171         return NULL;
1172 }
1173 
1174 static bool check_hdmi_disabled(struct pci_dev *pci)
1175 {
1176         bool vga_inactive = false;
1177         struct pci_dev *p = get_bound_vga(pci);
1178 
1179         if (p) {
1180                 if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1181                         vga_inactive = true;
1182                 pci_dev_put(p);
1183         }
1184         return vga_inactive;
1185 }
1186 #endif /* SUPPORT_VGA_SWITCHEROO */
1187 
1188 /*
1189  * white/black-listing for position_fix
1190  */
1191 static struct snd_pci_quirk position_fix_list[] = {
1192         SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1193         SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1194         SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1195         SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1196         SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1197         SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1198         SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1199         SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1200         SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1201         SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1202         SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1203         SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1204         SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1205         SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1206         {}
1207 };
1208 
1209 static int check_position_fix(struct azx *chip, int fix)
1210 {
1211         const struct snd_pci_quirk *q;
1212 
1213         switch (fix) {
1214         case POS_FIX_AUTO:
1215         case POS_FIX_LPIB:
1216         case POS_FIX_POSBUF:
1217         case POS_FIX_VIACOMBO:
1218         case POS_FIX_COMBO:
1219                 return fix;
1220         }
1221 
1222         q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1223         if (q) {
1224                 dev_info(chip->card->dev,
1225                          "position_fix set to %d for device %04x:%04x\n",
1226                          q->value, q->subvendor, q->subdevice);
1227                 return q->value;
1228         }
1229 
1230         /* Check VIA/ATI HD Audio Controller exist */
1231         if (chip->driver_caps & AZX_DCAPS_POSFIX_VIA) {
1232                 dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1233                 return POS_FIX_VIACOMBO;
1234         }
1235         if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1236                 dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1237                 return POS_FIX_LPIB;
1238         }
1239         return POS_FIX_AUTO;
1240 }
1241 
1242 static void assign_position_fix(struct azx *chip, int fix)
1243 {
1244         static azx_get_pos_callback_t callbacks[] = {
1245                 [POS_FIX_AUTO] = NULL,
1246                 [POS_FIX_LPIB] = azx_get_pos_lpib,
1247                 [POS_FIX_POSBUF] = azx_get_pos_posbuf,
1248                 [POS_FIX_VIACOMBO] = azx_via_get_position,
1249                 [POS_FIX_COMBO] = azx_get_pos_lpib,
1250         };
1251 
1252         chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1253 
1254         /* combo mode uses LPIB only for playback */
1255         if (fix == POS_FIX_COMBO)
1256                 chip->get_position[1] = NULL;
1257 
1258         if (fix == POS_FIX_POSBUF &&
1259             (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1260                 chip->get_delay[0] = chip->get_delay[1] =
1261                         azx_get_delay_from_lpib;
1262         }
1263 
1264 }
1265 
1266 /*
1267  * black-lists for probe_mask
1268  */
1269 static struct snd_pci_quirk probe_mask_list[] = {
1270         /* Thinkpad often breaks the controller communication when accessing
1271          * to the non-working (or non-existing) modem codec slot.
1272          */
1273         SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1274         SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1275         SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1276         /* broken BIOS */
1277         SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1278         /* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1279         SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1280         /* forced codec slots */
1281         SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1282         SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1283         /* WinFast VP200 H (Teradici) user reported broken communication */
1284         SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1285         {}
1286 };
1287 
1288 #define AZX_FORCE_CODEC_MASK    0x100
1289 
1290 static void check_probe_mask(struct azx *chip, int dev)
1291 {
1292         const struct snd_pci_quirk *q;
1293 
1294         chip->codec_probe_mask = probe_mask[dev];
1295         if (chip->codec_probe_mask == -1) {
1296                 q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1297                 if (q) {
1298                         dev_info(chip->card->dev,
1299                                  "probe_mask set to 0x%x for device %04x:%04x\n",
1300                                  q->value, q->subvendor, q->subdevice);
1301                         chip->codec_probe_mask = q->value;
1302                 }
1303         }
1304 
1305         /* check forced option */
1306         if (chip->codec_probe_mask != -1 &&
1307             (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1308                 chip->codec_mask = chip->codec_probe_mask & 0xff;
1309                 dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1310                          chip->codec_mask);
1311         }
1312 }
1313 
1314 /*
1315  * white/black-list for enable_msi
1316  */
1317 static struct snd_pci_quirk msi_black_list[] = {
1318         SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1319         SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1320         SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1321         SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1322         SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1323         SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1324         SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1325         SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1326         SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1327         SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1328         {}
1329 };
1330 
1331 static void check_msi(struct azx *chip)
1332 {
1333         const struct snd_pci_quirk *q;
1334 
1335         if (enable_msi >= 0) {
1336                 chip->msi = !!enable_msi;
1337                 return;
1338         }
1339         chip->msi = 1;  /* enable MSI as default */
1340         q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
1341         if (q) {
1342                 dev_info(chip->card->dev,
1343                          "msi for device %04x:%04x set to %d\n",
1344                          q->subvendor, q->subdevice, q->value);
1345                 chip->msi = q->value;
1346                 return;
1347         }
1348 
1349         /* NVidia chipsets seem to cause troubles with MSI */
1350         if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1351                 dev_info(chip->card->dev, "Disabling MSI\n");
1352                 chip->msi = 0;
1353         }
1354 }
1355 
1356 /* check the snoop mode availability */
1357 static void azx_check_snoop_available(struct azx *chip)
1358 {
1359         bool snoop = chip->snoop;
1360 
1361         switch (chip->driver_type) {
1362         case AZX_DRIVER_VIA:
1363                 /* force to non-snoop mode for a new VIA controller
1364                  * when BIOS is set
1365                  */
1366                 if (snoop) {
1367                         u8 val;
1368                         pci_read_config_byte(chip->pci, 0x42, &val);
1369                         if (!(val & 0x80) && chip->pci->revision == 0x30)
1370                                 snoop = false;
1371                 }
1372                 break;
1373         case AZX_DRIVER_ATIHDMI_NS:
1374                 /* new ATI HDMI requires non-snoop */
1375                 snoop = false;
1376                 break;
1377         case AZX_DRIVER_CTHDA:
1378         case AZX_DRIVER_CMEDIA:
1379                 snoop = false;
1380                 break;
1381         }
1382 
1383         if (snoop != chip->snoop) {
1384                 dev_info(chip->card->dev, "Force to %s mode\n",
1385                          snoop ? "snoop" : "non-snoop");
1386                 chip->snoop = snoop;
1387         }
1388 }
1389 
1390 static void azx_probe_work(struct work_struct *work)
1391 {
1392         struct hda_intel *hda = container_of(work, struct hda_intel, probe_work);
1393         azx_probe_continue(&hda->chip);
1394 }
1395 
1396 /*
1397  * constructor
1398  */
1399 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1400                       int dev, unsigned int driver_caps,
1401                       const struct hda_controller_ops *hda_ops,
1402                       struct azx **rchip)
1403 {
1404         static struct snd_device_ops ops = {
1405                 .dev_free = azx_dev_free,
1406         };
1407         struct hda_intel *hda;
1408         struct azx *chip;
1409         int err;
1410 
1411         *rchip = NULL;
1412 
1413         err = pci_enable_device(pci);
1414         if (err < 0)
1415                 return err;
1416 
1417         hda = kzalloc(sizeof(*hda), GFP_KERNEL);
1418         if (!hda) {
1419                 dev_err(card->dev, "Cannot allocate hda\n");
1420                 pci_disable_device(pci);
1421                 return -ENOMEM;
1422         }
1423 
1424         chip = &hda->chip;
1425         spin_lock_init(&chip->reg_lock);
1426         mutex_init(&chip->open_mutex);
1427         chip->card = card;
1428         chip->pci = pci;
1429         chip->ops = hda_ops;
1430         chip->irq = -1;
1431         chip->driver_caps = driver_caps;
1432         chip->driver_type = driver_caps & 0xff;
1433         check_msi(chip);
1434         chip->dev_index = dev;
1435         chip->jackpoll_ms = jackpoll_ms;
1436         INIT_LIST_HEAD(&chip->pcm_list);
1437         INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1438         INIT_LIST_HEAD(&hda->list);
1439         init_vga_switcheroo(chip);
1440         init_completion(&hda->probe_wait);
1441 
1442         assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1443 
1444         check_probe_mask(chip, dev);
1445 
1446         chip->single_cmd = single_cmd;
1447         chip->snoop = hda_snoop;
1448         azx_check_snoop_available(chip);
1449 
1450         if (bdl_pos_adj[dev] < 0) {
1451                 switch (chip->driver_type) {
1452                 case AZX_DRIVER_ICH:
1453                 case AZX_DRIVER_PCH:
1454                         bdl_pos_adj[dev] = 1;
1455                         break;
1456                 default:
1457                         bdl_pos_adj[dev] = 32;
1458                         break;
1459                 }
1460         }
1461         chip->bdl_pos_adj = bdl_pos_adj;
1462 
1463         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1464         if (err < 0) {
1465                 dev_err(card->dev, "Error creating device [card]!\n");
1466                 azx_free(chip);
1467                 return err;
1468         }
1469 
1470         /* continue probing in work context as may trigger request module */
1471         INIT_WORK(&hda->probe_work, azx_probe_work);
1472 
1473         *rchip = chip;
1474 
1475         return 0;
1476 }
1477 
1478 static int azx_first_init(struct azx *chip)
1479 {
1480         int dev = chip->dev_index;
1481         struct pci_dev *pci = chip->pci;
1482         struct snd_card *card = chip->card;
1483         int err;
1484         unsigned short gcap;
1485 
1486 #if BITS_PER_LONG != 64
1487         /* Fix up base address on ULI M5461 */
1488         if (chip->driver_type == AZX_DRIVER_ULI) {
1489                 u16 tmp3;
1490                 pci_read_config_word(pci, 0x40, &tmp3);
1491                 pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1492                 pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1493         }
1494 #endif
1495 
1496         err = pci_request_regions(pci, "ICH HD audio");
1497         if (err < 0)
1498                 return err;
1499         chip->region_requested = 1;
1500 
1501         chip->addr = pci_resource_start(pci, 0);
1502         chip->remap_addr = pci_ioremap_bar(pci, 0);
1503         if (chip->remap_addr == NULL) {
1504                 dev_err(card->dev, "ioremap error\n");
1505                 return -ENXIO;
1506         }
1507 
1508         if (chip->msi)
1509                 if (pci_enable_msi(pci) < 0)
1510                         chip->msi = 0;
1511 
1512         if (azx_acquire_irq(chip, 0) < 0)
1513                 return -EBUSY;
1514 
1515         pci_set_master(pci);
1516         synchronize_irq(chip->irq);
1517 
1518         gcap = azx_readw(chip, GCAP);
1519         dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1520 
1521         /* disable SB600 64bit support for safety */
1522         if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1523                 struct pci_dev *p_smbus;
1524                 p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1525                                          PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1526                                          NULL);
1527                 if (p_smbus) {
1528                         if (p_smbus->revision < 0x30)
1529                                 gcap &= ~AZX_GCAP_64OK;
1530                         pci_dev_put(p_smbus);
1531                 }
1532         }
1533 
1534         /* disable 64bit DMA address on some devices */
1535         if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1536                 dev_dbg(card->dev, "Disabling 64bit DMA\n");
1537                 gcap &= ~AZX_GCAP_64OK;
1538         }
1539 
1540         /* disable buffer size rounding to 128-byte multiples if supported */
1541         if (align_buffer_size >= 0)
1542                 chip->align_buffer_size = !!align_buffer_size;
1543         else {
1544                 if (chip->driver_caps & AZX_DCAPS_BUFSIZE)
1545                         chip->align_buffer_size = 0;
1546                 else if (chip->driver_caps & AZX_DCAPS_ALIGN_BUFSIZE)
1547                         chip->align_buffer_size = 1;
1548                 else
1549                         chip->align_buffer_size = 1;
1550         }
1551 
1552         /* allow 64bit DMA address if supported by H/W */
1553         if ((gcap & AZX_GCAP_64OK) && !pci_set_dma_mask(pci, DMA_BIT_MASK(64)))
1554                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(64));
1555         else {
1556                 pci_set_dma_mask(pci, DMA_BIT_MASK(32));
1557                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32));
1558         }
1559 
1560         /* read number of streams from GCAP register instead of using
1561          * hardcoded value
1562          */
1563         chip->capture_streams = (gcap >> 8) & 0x0f;
1564         chip->playback_streams = (gcap >> 12) & 0x0f;
1565         if (!chip->playback_streams && !chip->capture_streams) {
1566                 /* gcap didn't give any info, switching to old method */
1567 
1568                 switch (chip->driver_type) {
1569                 case AZX_DRIVER_ULI:
1570                         chip->playback_streams = ULI_NUM_PLAYBACK;
1571                         chip->capture_streams = ULI_NUM_CAPTURE;
1572                         break;
1573                 case AZX_DRIVER_ATIHDMI:
1574                 case AZX_DRIVER_ATIHDMI_NS:
1575                         chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1576                         chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1577                         break;
1578                 case AZX_DRIVER_GENERIC:
1579                 default:
1580                         chip->playback_streams = ICH6_NUM_PLAYBACK;
1581                         chip->capture_streams = ICH6_NUM_CAPTURE;
1582                         break;
1583                 }
1584         }
1585         chip->capture_index_offset = 0;
1586         chip->playback_index_offset = chip->capture_streams;
1587         chip->num_streams = chip->playback_streams + chip->capture_streams;
1588         chip->azx_dev = kcalloc(chip->num_streams, sizeof(*chip->azx_dev),
1589                                 GFP_KERNEL);
1590         if (!chip->azx_dev) {
1591                 dev_err(card->dev, "cannot malloc azx_dev\n");
1592                 return -ENOMEM;
1593         }
1594 
1595         err = azx_alloc_stream_pages(chip);
1596         if (err < 0)
1597                 return err;
1598 
1599         /* initialize streams */
1600         azx_init_stream(chip);
1601 
1602         /* initialize chip */
1603         azx_init_pci(chip);
1604 
1605         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
1606                 haswell_set_bclk(chip);
1607 
1608         azx_init_chip(chip, (probe_only[dev] & 2) == 0);
1609 
1610         /* codec detection */
1611         if (!chip->codec_mask) {
1612                 dev_err(card->dev, "no codecs found!\n");
1613                 return -ENODEV;
1614         }
1615 
1616         strcpy(card->driver, "HDA-Intel");
1617         strlcpy(card->shortname, driver_short_names[chip->driver_type],
1618                 sizeof(card->shortname));
1619         snprintf(card->longname, sizeof(card->longname),
1620                  "%s at 0x%lx irq %i",
1621                  card->shortname, chip->addr, chip->irq);
1622 
1623         return 0;
1624 }
1625 
1626 static void power_down_all_codecs(struct azx *chip)
1627 {
1628 #ifdef CONFIG_PM
1629         /* The codecs were powered up in snd_hda_codec_new().
1630          * Now all initialization done, so turn them down if possible
1631          */
1632         struct hda_codec *codec;
1633         list_for_each_entry(codec, &chip->bus->codec_list, list) {
1634                 snd_hda_power_down(codec);
1635         }
1636 #endif
1637 }
1638 
1639 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1640 /* callback from request_firmware_nowait() */
1641 static void azx_firmware_cb(const struct firmware *fw, void *context)
1642 {
1643         struct snd_card *card = context;
1644         struct azx *chip = card->private_data;
1645         struct pci_dev *pci = chip->pci;
1646 
1647         if (!fw) {
1648                 dev_err(card->dev, "Cannot load firmware, aborting\n");
1649                 goto error;
1650         }
1651 
1652         chip->fw = fw;
1653         if (!chip->disabled) {
1654                 /* continue probing */
1655                 if (azx_probe_continue(chip))
1656                         goto error;
1657         }
1658         return; /* OK */
1659 
1660  error:
1661         snd_card_free(card);
1662         pci_set_drvdata(pci, NULL);
1663 }
1664 #endif
1665 
1666 /*
1667  * HDA controller ops.
1668  */
1669 
1670 /* PCI register access. */
1671 static void pci_azx_writel(u32 value, u32 __iomem *addr)
1672 {
1673         writel(value, addr);
1674 }
1675 
1676 static u32 pci_azx_readl(u32 __iomem *addr)
1677 {
1678         return readl(addr);
1679 }
1680 
1681 static void pci_azx_writew(u16 value, u16 __iomem *addr)
1682 {
1683         writew(value, addr);
1684 }
1685 
1686 static u16 pci_azx_readw(u16 __iomem *addr)
1687 {
1688         return readw(addr);
1689 }
1690 
1691 static void pci_azx_writeb(u8 value, u8 __iomem *addr)
1692 {
1693         writeb(value, addr);
1694 }
1695 
1696 static u8 pci_azx_readb(u8 __iomem *addr)
1697 {
1698         return readb(addr);
1699 }
1700 
1701 static int disable_msi_reset_irq(struct azx *chip)
1702 {
1703         int err;
1704 
1705         free_irq(chip->irq, chip);
1706         chip->irq = -1;
1707         pci_disable_msi(chip->pci);
1708         chip->msi = 0;
1709         err = azx_acquire_irq(chip, 1);
1710         if (err < 0)
1711                 return err;
1712 
1713         return 0;
1714 }
1715 
1716 /* DMA page allocation helpers.  */
1717 static int dma_alloc_pages(struct azx *chip,
1718                            int type,
1719                            size_t size,
1720                            struct snd_dma_buffer *buf)
1721 {
1722         int err;
1723 
1724         err = snd_dma_alloc_pages(type,
1725                                   chip->card->dev,
1726                                   size, buf);
1727         if (err < 0)
1728                 return err;
1729         mark_pages_wc(chip, buf, true);
1730         return 0;
1731 }
1732 
1733 static void dma_free_pages(struct azx *chip, struct snd_dma_buffer *buf)
1734 {
1735         mark_pages_wc(chip, buf, false);
1736         snd_dma_free_pages(buf);
1737 }
1738 
1739 static int substream_alloc_pages(struct azx *chip,
1740                                  struct snd_pcm_substream *substream,
1741                                  size_t size)
1742 {
1743         struct azx_dev *azx_dev = get_azx_dev(substream);
1744         int ret;
1745 
1746         mark_runtime_wc(chip, azx_dev, substream, false);
1747         azx_dev->bufsize = 0;
1748         azx_dev->period_bytes = 0;
1749         azx_dev->format_val = 0;
1750         ret = snd_pcm_lib_malloc_pages(substream, size);
1751         if (ret < 0)
1752                 return ret;
1753         mark_runtime_wc(chip, azx_dev, substream, true);
1754         return 0;
1755 }
1756 
1757 static int substream_free_pages(struct azx *chip,
1758                                 struct snd_pcm_substream *substream)
1759 {
1760         struct azx_dev *azx_dev = get_azx_dev(substream);
1761         mark_runtime_wc(chip, azx_dev, substream, false);
1762         return snd_pcm_lib_free_pages(substream);
1763 }
1764 
1765 static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
1766                              struct vm_area_struct *area)
1767 {
1768 #ifdef CONFIG_X86
1769         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1770         struct azx *chip = apcm->chip;
1771         if (!azx_snoop(chip))
1772                 area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
1773 #endif
1774 }
1775 
1776 static const struct hda_controller_ops pci_hda_ops = {
1777         .reg_writel = pci_azx_writel,
1778         .reg_readl = pci_azx_readl,
1779         .reg_writew = pci_azx_writew,
1780         .reg_readw = pci_azx_readw,
1781         .reg_writeb = pci_azx_writeb,
1782         .reg_readb = pci_azx_readb,
1783         .disable_msi_reset_irq = disable_msi_reset_irq,
1784         .dma_alloc_pages = dma_alloc_pages,
1785         .dma_free_pages = dma_free_pages,
1786         .substream_alloc_pages = substream_alloc_pages,
1787         .substream_free_pages = substream_free_pages,
1788         .pcm_mmap_prepare = pcm_mmap_prepare,
1789         .position_check = azx_position_check,
1790 };
1791 
1792 static int azx_probe(struct pci_dev *pci,
1793                      const struct pci_device_id *pci_id)
1794 {
1795         static int dev;
1796         struct snd_card *card;
1797         struct hda_intel *hda;
1798         struct azx *chip;
1799         bool schedule_probe;
1800         int err;
1801 
1802         if (dev >= SNDRV_CARDS)
1803                 return -ENODEV;
1804         if (!enable[dev]) {
1805                 dev++;
1806                 return -ENOENT;
1807         }
1808 
1809         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1810                            0, &card);
1811         if (err < 0) {
1812                 dev_err(&pci->dev, "Error creating card!\n");
1813                 return err;
1814         }
1815 
1816         err = azx_create(card, pci, dev, pci_id->driver_data,
1817                          &pci_hda_ops, &chip);
1818         if (err < 0)
1819                 goto out_free;
1820         card->private_data = chip;
1821         hda = container_of(chip, struct hda_intel, chip);
1822 
1823         pci_set_drvdata(pci, card);
1824 
1825         err = register_vga_switcheroo(chip);
1826         if (err < 0) {
1827                 dev_err(card->dev, "Error registering VGA-switcheroo client\n");
1828                 goto out_free;
1829         }
1830 
1831         if (check_hdmi_disabled(pci)) {
1832                 dev_info(card->dev, "VGA controller is disabled\n");
1833                 dev_info(card->dev, "Delaying initialization\n");
1834                 chip->disabled = true;
1835         }
1836 
1837         schedule_probe = !chip->disabled;
1838 
1839 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1840         if (patch[dev] && *patch[dev]) {
1841                 dev_info(card->dev, "Applying patch firmware '%s'\n",
1842                          patch[dev]);
1843                 err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
1844                                               &pci->dev, GFP_KERNEL, card,
1845                                               azx_firmware_cb);
1846                 if (err < 0)
1847                         goto out_free;
1848                 schedule_probe = false; /* continued in azx_firmware_cb() */
1849         }
1850 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
1851 
1852 #ifndef CONFIG_SND_HDA_I915
1853         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
1854                 dev_err(card->dev, "Haswell must build in CONFIG_SND_HDA_I915\n");
1855 #endif
1856 
1857         if (schedule_probe)
1858                 schedule_work(&hda->probe_work);
1859 
1860         dev++;
1861         if (chip->disabled)
1862                 complete_all(&hda->probe_wait);
1863         return 0;
1864 
1865 out_free:
1866         snd_card_free(card);
1867         return err;
1868 }
1869 
1870 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
1871 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
1872         [AZX_DRIVER_NVIDIA] = 8,
1873         [AZX_DRIVER_TERA] = 1,
1874 };
1875 
1876 static int azx_probe_continue(struct azx *chip)
1877 {
1878         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1879         struct pci_dev *pci = chip->pci;
1880         int dev = chip->dev_index;
1881         int err;
1882 
1883         /* Request power well for Haswell HDA controller and codec */
1884         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1885 #ifdef CONFIG_SND_HDA_I915
1886                 err = hda_i915_init();
1887                 if (err < 0) {
1888                         dev_err(chip->card->dev,
1889                                 "Error request power-well from i915\n");
1890                         goto out_free;
1891                 }
1892                 err = hda_display_power(true);
1893                 if (err < 0) {
1894                         dev_err(chip->card->dev,
1895                                 "Cannot turn on display power on i915\n");
1896                         goto out_free;
1897                 }
1898 #endif
1899         }
1900 
1901         err = azx_first_init(chip);
1902         if (err < 0)
1903                 goto out_free;
1904 
1905 #ifdef CONFIG_SND_HDA_INPUT_BEEP
1906         chip->beep_mode = beep_mode[dev];
1907 #endif
1908 
1909         /* create codec instances */
1910         err = azx_codec_create(chip, model[dev],
1911                                azx_max_codecs[chip->driver_type],
1912                                power_save_addr);
1913 
1914         if (err < 0)
1915                 goto out_free;
1916 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1917         if (chip->fw) {
1918                 err = snd_hda_load_patch(chip->bus, chip->fw->size,
1919                                          chip->fw->data);
1920                 if (err < 0)
1921                         goto out_free;
1922 #ifndef CONFIG_PM
1923                 release_firmware(chip->fw); /* no longer needed */
1924                 chip->fw = NULL;
1925 #endif
1926         }
1927 #endif
1928         if ((probe_only[dev] & 1) == 0) {
1929                 err = azx_codec_configure(chip);
1930                 if (err < 0)
1931                         goto out_free;
1932         }
1933 
1934         /* create PCM streams */
1935         err = snd_hda_build_pcms(chip->bus);
1936         if (err < 0)
1937                 goto out_free;
1938 
1939         /* create mixer controls */
1940         err = azx_mixer_create(chip);
1941         if (err < 0)
1942                 goto out_free;
1943 
1944         err = snd_card_register(chip->card);
1945         if (err < 0)
1946                 goto out_free;
1947 
1948         chip->running = 1;
1949         power_down_all_codecs(chip);
1950         azx_notifier_register(chip);
1951         azx_add_card_list(chip);
1952         if ((chip->driver_caps & AZX_DCAPS_PM_RUNTIME) || hda->use_vga_switcheroo)
1953                 pm_runtime_put_noidle(&pci->dev);
1954 
1955 out_free:
1956         if (err < 0)
1957                 hda->init_failed = 1;
1958         complete_all(&hda->probe_wait);
1959         return err;
1960 }
1961 
1962 static void azx_remove(struct pci_dev *pci)
1963 {
1964         struct snd_card *card = pci_get_drvdata(pci);
1965 
1966         if (card)
1967                 snd_card_free(card);
1968 }
1969 
1970 /* PCI IDs */
1971 static const struct pci_device_id azx_ids[] = {
1972         /* CPT */
1973         { PCI_DEVICE(0x8086, 0x1c20),
1974           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
1975         /* PBG */
1976         { PCI_DEVICE(0x8086, 0x1d20),
1977           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
1978         /* Panther Point */
1979         { PCI_DEVICE(0x8086, 0x1e20),
1980           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
1981         /* Lynx Point */
1982         { PCI_DEVICE(0x8086, 0x8c20),
1983           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
1984         /* 9 Series */
1985         { PCI_DEVICE(0x8086, 0x8ca0),
1986           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
1987         /* Wellsburg */
1988         { PCI_DEVICE(0x8086, 0x8d20),
1989           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
1990         { PCI_DEVICE(0x8086, 0x8d21),
1991           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
1992         /* Lynx Point-LP */
1993         { PCI_DEVICE(0x8086, 0x9c20),
1994           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
1995         /* Lynx Point-LP */
1996         { PCI_DEVICE(0x8086, 0x9c21),
1997           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
1998         /* Wildcat Point-LP */
1999         { PCI_DEVICE(0x8086, 0x9ca0),
2000           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2001         /* Haswell */
2002         { PCI_DEVICE(0x8086, 0x0a0c),
2003           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2004         { PCI_DEVICE(0x8086, 0x0c0c),
2005           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2006         { PCI_DEVICE(0x8086, 0x0d0c),
2007           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2008         /* Broadwell */
2009         { PCI_DEVICE(0x8086, 0x160c),
2010           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL },
2011         /* 5 Series/3400 */
2012         { PCI_DEVICE(0x8086, 0x3b56),
2013           .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2014         /* Poulsbo */
2015         { PCI_DEVICE(0x8086, 0x811b),
2016           .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2017         /* Oaktrail */
2018         { PCI_DEVICE(0x8086, 0x080a),
2019           .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2020         /* BayTrail */
2021         { PCI_DEVICE(0x8086, 0x0f04),
2022           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2023         /* Braswell */
2024         { PCI_DEVICE(0x8086, 0x2284),
2025           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2026         /* ICH */
2027         { PCI_DEVICE(0x8086, 0x2668),
2028           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2029           AZX_DCAPS_BUFSIZE },  /* ICH6 */
2030         { PCI_DEVICE(0x8086, 0x27d8),
2031           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2032           AZX_DCAPS_BUFSIZE },  /* ICH7 */
2033         { PCI_DEVICE(0x8086, 0x269a),
2034           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2035           AZX_DCAPS_BUFSIZE },  /* ESB2 */
2036         { PCI_DEVICE(0x8086, 0x284b),
2037           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2038           AZX_DCAPS_BUFSIZE },  /* ICH8 */
2039         { PCI_DEVICE(0x8086, 0x293e),
2040           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2041           AZX_DCAPS_BUFSIZE },  /* ICH9 */
2042         { PCI_DEVICE(0x8086, 0x293f),
2043           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2044           AZX_DCAPS_BUFSIZE },  /* ICH9 */
2045         { PCI_DEVICE(0x8086, 0x3a3e),
2046           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2047           AZX_DCAPS_BUFSIZE },  /* ICH10 */
2048         { PCI_DEVICE(0x8086, 0x3a6e),
2049           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_OLD_SSYNC |
2050           AZX_DCAPS_BUFSIZE },  /* ICH10 */
2051         /* Generic Intel */
2052         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2053           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2054           .class_mask = 0xffffff,
2055           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_BUFSIZE },
2056         /* ATI SB 450/600/700/800/900 */
2057         { PCI_DEVICE(0x1002, 0x437b),
2058           .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2059         { PCI_DEVICE(0x1002, 0x4383),
2060           .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2061         /* AMD Hudson */
2062         { PCI_DEVICE(0x1022, 0x780d),
2063           .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2064         /* ATI HDMI */
2065         { PCI_DEVICE(0x1002, 0x793b),
2066           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2067         { PCI_DEVICE(0x1002, 0x7919),
2068           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2069         { PCI_DEVICE(0x1002, 0x960f),
2070           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2071         { PCI_DEVICE(0x1002, 0x970f),
2072           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2073         { PCI_DEVICE(0x1002, 0xaa00),
2074           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2075         { PCI_DEVICE(0x1002, 0xaa08),
2076           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2077         { PCI_DEVICE(0x1002, 0xaa10),
2078           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2079         { PCI_DEVICE(0x1002, 0xaa18),
2080           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2081         { PCI_DEVICE(0x1002, 0xaa20),
2082           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2083         { PCI_DEVICE(0x1002, 0xaa28),
2084           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2085         { PCI_DEVICE(0x1002, 0xaa30),
2086           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2087         { PCI_DEVICE(0x1002, 0xaa38),
2088           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2089         { PCI_DEVICE(0x1002, 0xaa40),
2090           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2091         { PCI_DEVICE(0x1002, 0xaa48),
2092           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2093         { PCI_DEVICE(0x1002, 0xaa50),
2094           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2095         { PCI_DEVICE(0x1002, 0xaa58),
2096           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2097         { PCI_DEVICE(0x1002, 0xaa60),
2098           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2099         { PCI_DEVICE(0x1002, 0xaa68),
2100           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2101         { PCI_DEVICE(0x1002, 0xaa80),
2102           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2103         { PCI_DEVICE(0x1002, 0xaa88),
2104           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2105         { PCI_DEVICE(0x1002, 0xaa90),
2106           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2107         { PCI_DEVICE(0x1002, 0xaa98),
2108           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2109         { PCI_DEVICE(0x1002, 0x9902),
2110           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
2111         { PCI_DEVICE(0x1002, 0xaaa0),
2112           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
2113         { PCI_DEVICE(0x1002, 0xaaa8),
2114           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
2115         { PCI_DEVICE(0x1002, 0xaab0),
2116           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI },
2117         /* VIA VT8251/VT8237A */
2118         { PCI_DEVICE(0x1106, 0x3288),
2119           .driver_data = AZX_DRIVER_VIA | AZX_DCAPS_POSFIX_VIA },
2120         /* VIA GFX VT7122/VX900 */
2121         { PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2122         /* VIA GFX VT6122/VX11 */
2123         { PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2124         /* SIS966 */
2125         { PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2126         /* ULI M5461 */
2127         { PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2128         /* NVIDIA MCP */
2129         { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2130           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2131           .class_mask = 0xffffff,
2132           .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2133         /* Teradici */
2134         { PCI_DEVICE(0x6549, 0x1200),
2135           .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2136         { PCI_DEVICE(0x6549, 0x2200),
2137           .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2138         /* Creative X-Fi (CA0110-IBG) */
2139         /* CTHDA chips */
2140         { PCI_DEVICE(0x1102, 0x0010),
2141           .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2142         { PCI_DEVICE(0x1102, 0x0012),
2143           .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2144 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2145         /* the following entry conflicts with snd-ctxfi driver,
2146          * as ctxfi driver mutates from HD-audio to native mode with
2147          * a special command sequence.
2148          */
2149         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2150           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2151           .class_mask = 0xffffff,
2152           .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2153           AZX_DCAPS_RIRB_PRE_DELAY | AZX_DCAPS_POSFIX_LPIB },
2154 #else
2155         /* this entry seems still valid -- i.e. without emu20kx chip */
2156         { PCI_DEVICE(0x1102, 0x0009),
2157           .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2158           AZX_DCAPS_RIRB_PRE_DELAY | AZX_DCAPS_POSFIX_LPIB },
2159 #endif
2160         /* CM8888 */
2161         { PCI_DEVICE(0x13f6, 0x5011),
2162           .driver_data = AZX_DRIVER_CMEDIA |
2163           AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB },
2164         /* Vortex86MX */
2165         { PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2166         /* VMware HDAudio */
2167         { PCI_DEVICE(0x15ad, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2168         /* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2169         { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2170           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2171           .class_mask = 0xffffff,
2172           .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2173         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2174           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2175           .class_mask = 0xffffff,
2176           .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2177         { 0, }
2178 };
2179 MODULE_DEVICE_TABLE(pci, azx_ids);
2180 
2181 /* pci_driver definition */
2182 static struct pci_driver azx_driver = {
2183         .name = KBUILD_MODNAME,
2184         .id_table = azx_ids,
2185         .probe = azx_probe,
2186         .remove = azx_remove,
2187         .driver = {
2188                 .pm = AZX_PM_OPS,
2189         },
2190 };
2191 
2192 module_pci_driver(azx_driver);
2193 

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