xref: /openbmc/linux/sound/pci/hda/hda_intel.c (revision f0702555)
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 <sound/hdaudio.h>
61 #include <sound/hda_i915.h>
62 #include <linux/vgaarb.h>
63 #include <linux/vga_switcheroo.h>
64 #include <linux/firmware.h>
65 #include "hda_codec.h"
66 #include "hda_controller.h"
67 #include "hda_intel.h"
68 
69 #define CREATE_TRACE_POINTS
70 #include "hda_intel_trace.h"
71 
72 /* position fix mode */
73 enum {
74 	POS_FIX_AUTO,
75 	POS_FIX_LPIB,
76 	POS_FIX_POSBUF,
77 	POS_FIX_VIACOMBO,
78 	POS_FIX_COMBO,
79 };
80 
81 /* Defines for ATI HD Audio support in SB450 south bridge */
82 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
83 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
84 
85 /* Defines for Nvidia HDA support */
86 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
87 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
88 #define NVIDIA_HDA_ISTRM_COH          0x4d
89 #define NVIDIA_HDA_OSTRM_COH          0x4c
90 #define NVIDIA_HDA_ENABLE_COHBIT      0x01
91 
92 /* Defines for Intel SCH HDA snoop control */
93 #define INTEL_HDA_CGCTL	 0x48
94 #define INTEL_HDA_CGCTL_MISCBDCGE        (0x1 << 6)
95 #define INTEL_SCH_HDA_DEVC      0x78
96 #define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
97 
98 /* Define IN stream 0 FIFO size offset in VIA controller */
99 #define VIA_IN_STREAM0_FIFO_SIZE_OFFSET	0x90
100 /* Define VIA HD Audio Device ID*/
101 #define VIA_HDAC_DEVICE_ID		0x3288
102 
103 /* max number of SDs */
104 /* ICH, ATI and VIA have 4 playback and 4 capture */
105 #define ICH6_NUM_CAPTURE	4
106 #define ICH6_NUM_PLAYBACK	4
107 
108 /* ULI has 6 playback and 5 capture */
109 #define ULI_NUM_CAPTURE		5
110 #define ULI_NUM_PLAYBACK	6
111 
112 /* ATI HDMI may have up to 8 playbacks and 0 capture */
113 #define ATIHDMI_NUM_CAPTURE	0
114 #define ATIHDMI_NUM_PLAYBACK	8
115 
116 /* TERA has 4 playback and 3 capture */
117 #define TERA_NUM_CAPTURE	3
118 #define TERA_NUM_PLAYBACK	4
119 
120 
121 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
122 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
123 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
124 static char *model[SNDRV_CARDS];
125 static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
126 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
127 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
128 static int probe_only[SNDRV_CARDS];
129 static int jackpoll_ms[SNDRV_CARDS];
130 static bool single_cmd;
131 static int enable_msi = -1;
132 #ifdef CONFIG_SND_HDA_PATCH_LOADER
133 static char *patch[SNDRV_CARDS];
134 #endif
135 #ifdef CONFIG_SND_HDA_INPUT_BEEP
136 static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
137 					CONFIG_SND_HDA_INPUT_BEEP_MODE};
138 #endif
139 
140 module_param_array(index, int, NULL, 0444);
141 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
142 module_param_array(id, charp, NULL, 0444);
143 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
144 module_param_array(enable, bool, NULL, 0444);
145 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
146 module_param_array(model, charp, NULL, 0444);
147 MODULE_PARM_DESC(model, "Use the given board model.");
148 module_param_array(position_fix, int, NULL, 0444);
149 MODULE_PARM_DESC(position_fix, "DMA pointer read method."
150 		 "(-1 = system default, 0 = auto, 1 = LPIB, 2 = POSBUF, 3 = VIACOMBO, 4 = COMBO).");
151 module_param_array(bdl_pos_adj, int, NULL, 0644);
152 MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
153 module_param_array(probe_mask, int, NULL, 0444);
154 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
155 module_param_array(probe_only, int, NULL, 0444);
156 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
157 module_param_array(jackpoll_ms, int, NULL, 0444);
158 MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
159 module_param(single_cmd, bool, 0444);
160 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
161 		 "(for debugging only).");
162 module_param(enable_msi, bint, 0444);
163 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
164 #ifdef CONFIG_SND_HDA_PATCH_LOADER
165 module_param_array(patch, charp, NULL, 0444);
166 MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
167 #endif
168 #ifdef CONFIG_SND_HDA_INPUT_BEEP
169 module_param_array(beep_mode, bool, NULL, 0444);
170 MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
171 			    "(0=off, 1=on) (default=1).");
172 #endif
173 
174 #ifdef CONFIG_PM
175 static int param_set_xint(const char *val, const struct kernel_param *kp);
176 static const struct kernel_param_ops param_ops_xint = {
177 	.set = param_set_xint,
178 	.get = param_get_int,
179 };
180 #define param_check_xint param_check_int
181 
182 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
183 module_param(power_save, xint, 0644);
184 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
185 		 "(in second, 0 = disable).");
186 
187 /* reset the HD-audio controller in power save mode.
188  * this may give more power-saving, but will take longer time to
189  * wake up.
190  */
191 static bool power_save_controller = 1;
192 module_param(power_save_controller, bool, 0644);
193 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
194 #else
195 #define power_save	0
196 #endif /* CONFIG_PM */
197 
198 static int align_buffer_size = -1;
199 module_param(align_buffer_size, bint, 0644);
200 MODULE_PARM_DESC(align_buffer_size,
201 		"Force buffer and period sizes to be multiple of 128 bytes.");
202 
203 #ifdef CONFIG_X86
204 static int hda_snoop = -1;
205 module_param_named(snoop, hda_snoop, bint, 0444);
206 MODULE_PARM_DESC(snoop, "Enable/disable snooping");
207 #else
208 #define hda_snoop		true
209 #endif
210 
211 
212 MODULE_LICENSE("GPL");
213 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
214 			 "{Intel, ICH6M},"
215 			 "{Intel, ICH7},"
216 			 "{Intel, ESB2},"
217 			 "{Intel, ICH8},"
218 			 "{Intel, ICH9},"
219 			 "{Intel, ICH10},"
220 			 "{Intel, PCH},"
221 			 "{Intel, CPT},"
222 			 "{Intel, PPT},"
223 			 "{Intel, LPT},"
224 			 "{Intel, LPT_LP},"
225 			 "{Intel, WPT_LP},"
226 			 "{Intel, SPT},"
227 			 "{Intel, SPT_LP},"
228 			 "{Intel, HPT},"
229 			 "{Intel, PBG},"
230 			 "{Intel, SCH},"
231 			 "{ATI, SB450},"
232 			 "{ATI, SB600},"
233 			 "{ATI, RS600},"
234 			 "{ATI, RS690},"
235 			 "{ATI, RS780},"
236 			 "{ATI, R600},"
237 			 "{ATI, RV630},"
238 			 "{ATI, RV610},"
239 			 "{ATI, RV670},"
240 			 "{ATI, RV635},"
241 			 "{ATI, RV620},"
242 			 "{ATI, RV770},"
243 			 "{VIA, VT8251},"
244 			 "{VIA, VT8237A},"
245 			 "{SiS, SIS966},"
246 			 "{ULI, M5461}}");
247 MODULE_DESCRIPTION("Intel HDA driver");
248 
249 #if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
250 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
251 #define SUPPORT_VGA_SWITCHEROO
252 #endif
253 #endif
254 
255 
256 /*
257  */
258 
259 /* driver types */
260 enum {
261 	AZX_DRIVER_ICH,
262 	AZX_DRIVER_PCH,
263 	AZX_DRIVER_SCH,
264 	AZX_DRIVER_HDMI,
265 	AZX_DRIVER_ATI,
266 	AZX_DRIVER_ATIHDMI,
267 	AZX_DRIVER_ATIHDMI_NS,
268 	AZX_DRIVER_VIA,
269 	AZX_DRIVER_SIS,
270 	AZX_DRIVER_ULI,
271 	AZX_DRIVER_NVIDIA,
272 	AZX_DRIVER_TERA,
273 	AZX_DRIVER_CTX,
274 	AZX_DRIVER_CTHDA,
275 	AZX_DRIVER_CMEDIA,
276 	AZX_DRIVER_GENERIC,
277 	AZX_NUM_DRIVERS, /* keep this as last entry */
278 };
279 
280 #define azx_get_snoop_type(chip) \
281 	(((chip)->driver_caps & AZX_DCAPS_SNOOP_MASK) >> 10)
282 #define AZX_DCAPS_SNOOP_TYPE(type) ((AZX_SNOOP_TYPE_ ## type) << 10)
283 
284 /* quirks for old Intel chipsets */
285 #define AZX_DCAPS_INTEL_ICH \
286 	(AZX_DCAPS_OLD_SSYNC | AZX_DCAPS_NO_ALIGN_BUFSIZE)
287 
288 /* quirks for Intel PCH */
289 #define AZX_DCAPS_INTEL_PCH_BASE \
290 	(AZX_DCAPS_NO_ALIGN_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
291 	 AZX_DCAPS_SNOOP_TYPE(SCH))
292 
293 /* PCH up to IVB; no runtime PM */
294 #define AZX_DCAPS_INTEL_PCH_NOPM \
295 	(AZX_DCAPS_INTEL_PCH_BASE)
296 
297 /* PCH for HSW/BDW; with runtime PM */
298 #define AZX_DCAPS_INTEL_PCH \
299 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME)
300 
301 /* HSW HDMI */
302 #define AZX_DCAPS_INTEL_HASWELL \
303 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_COUNT_LPIB_DELAY |\
304 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_POWERWELL |\
305 	 AZX_DCAPS_SNOOP_TYPE(SCH))
306 
307 /* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
308 #define AZX_DCAPS_INTEL_BROADWELL \
309 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_POSFIX_LPIB |\
310 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_POWERWELL |\
311 	 AZX_DCAPS_SNOOP_TYPE(SCH))
312 
313 #define AZX_DCAPS_INTEL_BAYTRAIL \
314 	(AZX_DCAPS_INTEL_PCH_NOPM | AZX_DCAPS_I915_POWERWELL)
315 
316 #define AZX_DCAPS_INTEL_BRASWELL \
317 	(AZX_DCAPS_INTEL_PCH | AZX_DCAPS_I915_POWERWELL)
318 
319 #define AZX_DCAPS_INTEL_SKYLAKE \
320 	(AZX_DCAPS_INTEL_PCH | AZX_DCAPS_SEPARATE_STREAM_TAG |\
321 	 AZX_DCAPS_I915_POWERWELL)
322 
323 #define AZX_DCAPS_INTEL_BROXTON \
324 	(AZX_DCAPS_INTEL_PCH | AZX_DCAPS_SEPARATE_STREAM_TAG |\
325 	 AZX_DCAPS_I915_POWERWELL)
326 
327 /* quirks for ATI SB / AMD Hudson */
328 #define AZX_DCAPS_PRESET_ATI_SB \
329 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB |\
330 	 AZX_DCAPS_SNOOP_TYPE(ATI))
331 
332 /* quirks for ATI/AMD HDMI */
333 #define AZX_DCAPS_PRESET_ATI_HDMI \
334 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB|\
335 	 AZX_DCAPS_NO_MSI64)
336 
337 /* quirks for ATI HDMI with snoop off */
338 #define AZX_DCAPS_PRESET_ATI_HDMI_NS \
339 	(AZX_DCAPS_PRESET_ATI_HDMI | AZX_DCAPS_SNOOP_OFF)
340 
341 /* quirks for Nvidia */
342 #define AZX_DCAPS_PRESET_NVIDIA \
343 	(AZX_DCAPS_NO_MSI | /*AZX_DCAPS_ALIGN_BUFSIZE |*/ \
344 	 AZX_DCAPS_NO_64BIT | AZX_DCAPS_CORBRP_SELF_CLEAR |\
345 	 AZX_DCAPS_SNOOP_TYPE(NVIDIA))
346 
347 #define AZX_DCAPS_PRESET_CTHDA \
348 	(AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB |\
349 	 AZX_DCAPS_NO_64BIT |\
350 	 AZX_DCAPS_4K_BDLE_BOUNDARY | AZX_DCAPS_SNOOP_OFF)
351 
352 /*
353  * vga_switcheroo support
354  */
355 #ifdef SUPPORT_VGA_SWITCHEROO
356 #define use_vga_switcheroo(chip)	((chip)->use_vga_switcheroo)
357 #else
358 #define use_vga_switcheroo(chip)	0
359 #endif
360 
361 #define CONTROLLER_IN_GPU(pci) (((pci)->device == 0x0a0c) || \
362 					((pci)->device == 0x0c0c) || \
363 					((pci)->device == 0x0d0c) || \
364 					((pci)->device == 0x160c))
365 
366 #define IS_SKL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa170)
367 #define IS_SKL_LP(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9d70)
368 #define IS_KBL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa171)
369 #define IS_KBL_LP(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9d71)
370 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
371 #define IS_SKL_PLUS(pci) (IS_SKL(pci) || IS_SKL_LP(pci) || IS_BXT(pci)) || \
372 			IS_KBL(pci) || IS_KBL_LP(pci)
373 
374 static char *driver_short_names[] = {
375 	[AZX_DRIVER_ICH] = "HDA Intel",
376 	[AZX_DRIVER_PCH] = "HDA Intel PCH",
377 	[AZX_DRIVER_SCH] = "HDA Intel MID",
378 	[AZX_DRIVER_HDMI] = "HDA Intel HDMI",
379 	[AZX_DRIVER_ATI] = "HDA ATI SB",
380 	[AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
381 	[AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
382 	[AZX_DRIVER_VIA] = "HDA VIA VT82xx",
383 	[AZX_DRIVER_SIS] = "HDA SIS966",
384 	[AZX_DRIVER_ULI] = "HDA ULI M5461",
385 	[AZX_DRIVER_NVIDIA] = "HDA NVidia",
386 	[AZX_DRIVER_TERA] = "HDA Teradici",
387 	[AZX_DRIVER_CTX] = "HDA Creative",
388 	[AZX_DRIVER_CTHDA] = "HDA Creative",
389 	[AZX_DRIVER_CMEDIA] = "HDA C-Media",
390 	[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
391 };
392 
393 #ifdef CONFIG_X86
394 static void __mark_pages_wc(struct azx *chip, struct snd_dma_buffer *dmab, bool on)
395 {
396 	int pages;
397 
398 	if (azx_snoop(chip))
399 		return;
400 	if (!dmab || !dmab->area || !dmab->bytes)
401 		return;
402 
403 #ifdef CONFIG_SND_DMA_SGBUF
404 	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG) {
405 		struct snd_sg_buf *sgbuf = dmab->private_data;
406 		if (chip->driver_type == AZX_DRIVER_CMEDIA)
407 			return; /* deal with only CORB/RIRB buffers */
408 		if (on)
409 			set_pages_array_wc(sgbuf->page_table, sgbuf->pages);
410 		else
411 			set_pages_array_wb(sgbuf->page_table, sgbuf->pages);
412 		return;
413 	}
414 #endif
415 
416 	pages = (dmab->bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
417 	if (on)
418 		set_memory_wc((unsigned long)dmab->area, pages);
419 	else
420 		set_memory_wb((unsigned long)dmab->area, pages);
421 }
422 
423 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
424 				 bool on)
425 {
426 	__mark_pages_wc(chip, buf, on);
427 }
428 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
429 				   struct snd_pcm_substream *substream, bool on)
430 {
431 	if (azx_dev->wc_marked != on) {
432 		__mark_pages_wc(chip, snd_pcm_get_dma_buf(substream), on);
433 		azx_dev->wc_marked = on;
434 	}
435 }
436 #else
437 /* NOP for other archs */
438 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
439 				 bool on)
440 {
441 }
442 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
443 				   struct snd_pcm_substream *substream, bool on)
444 {
445 }
446 #endif
447 
448 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
449 
450 /*
451  * initialize the PCI registers
452  */
453 /* update bits in a PCI register byte */
454 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
455 			    unsigned char mask, unsigned char val)
456 {
457 	unsigned char data;
458 
459 	pci_read_config_byte(pci, reg, &data);
460 	data &= ~mask;
461 	data |= (val & mask);
462 	pci_write_config_byte(pci, reg, data);
463 }
464 
465 static void azx_init_pci(struct azx *chip)
466 {
467 	int snoop_type = azx_get_snoop_type(chip);
468 
469 	/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
470 	 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
471 	 * Ensuring these bits are 0 clears playback static on some HD Audio
472 	 * codecs.
473 	 * The PCI register TCSEL is defined in the Intel manuals.
474 	 */
475 	if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
476 		dev_dbg(chip->card->dev, "Clearing TCSEL\n");
477 		update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
478 	}
479 
480 	/* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
481 	 * we need to enable snoop.
482 	 */
483 	if (snoop_type == AZX_SNOOP_TYPE_ATI) {
484 		dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
485 			azx_snoop(chip));
486 		update_pci_byte(chip->pci,
487 				ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
488 				azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
489 	}
490 
491 	/* For NVIDIA HDA, enable snoop */
492 	if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
493 		dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
494 			azx_snoop(chip));
495 		update_pci_byte(chip->pci,
496 				NVIDIA_HDA_TRANSREG_ADDR,
497 				0x0f, NVIDIA_HDA_ENABLE_COHBITS);
498 		update_pci_byte(chip->pci,
499 				NVIDIA_HDA_ISTRM_COH,
500 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
501 		update_pci_byte(chip->pci,
502 				NVIDIA_HDA_OSTRM_COH,
503 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
504 	}
505 
506 	/* Enable SCH/PCH snoop if needed */
507 	if (snoop_type == AZX_SNOOP_TYPE_SCH) {
508 		unsigned short snoop;
509 		pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
510 		if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
511 		    (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
512 			snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
513 			if (!azx_snoop(chip))
514 				snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
515 			pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
516 			pci_read_config_word(chip->pci,
517 				INTEL_SCH_HDA_DEVC, &snoop);
518 		}
519 		dev_dbg(chip->card->dev, "SCH snoop: %s\n",
520 			(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
521 			"Disabled" : "Enabled");
522         }
523 }
524 
525 /*
526  * In BXT-P A0, HD-Audio DMA requests is later than expected,
527  * and makes an audio stream sensitive to system latencies when
528  * 24/32 bits are playing.
529  * Adjusting threshold of DMA fifo to force the DMA request
530  * sooner to improve latency tolerance at the expense of power.
531  */
532 static void bxt_reduce_dma_latency(struct azx *chip)
533 {
534 	u32 val;
535 
536 	val = azx_readl(chip, SKL_EM4L);
537 	val &= (0x3 << 20);
538 	azx_writel(chip, SKL_EM4L, val);
539 }
540 
541 static void hda_intel_init_chip(struct azx *chip, bool full_reset)
542 {
543 	struct hdac_bus *bus = azx_bus(chip);
544 	struct pci_dev *pci = chip->pci;
545 	u32 val;
546 
547 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
548 		snd_hdac_set_codec_wakeup(bus, true);
549 	if (IS_SKL_PLUS(pci)) {
550 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
551 		val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
552 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
553 	}
554 	azx_init_chip(chip, full_reset);
555 	if (IS_SKL_PLUS(pci)) {
556 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
557 		val = val | INTEL_HDA_CGCTL_MISCBDCGE;
558 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
559 	}
560 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
561 		snd_hdac_set_codec_wakeup(bus, false);
562 
563 	/* reduce dma latency to avoid noise */
564 	if (IS_BXT(pci))
565 		bxt_reduce_dma_latency(chip);
566 }
567 
568 /* calculate runtime delay from LPIB */
569 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
570 				   unsigned int pos)
571 {
572 	struct snd_pcm_substream *substream = azx_dev->core.substream;
573 	int stream = substream->stream;
574 	unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
575 	int delay;
576 
577 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
578 		delay = pos - lpib_pos;
579 	else
580 		delay = lpib_pos - pos;
581 	if (delay < 0) {
582 		if (delay >= azx_dev->core.delay_negative_threshold)
583 			delay = 0;
584 		else
585 			delay += azx_dev->core.bufsize;
586 	}
587 
588 	if (delay >= azx_dev->core.period_bytes) {
589 		dev_info(chip->card->dev,
590 			 "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
591 			 delay, azx_dev->core.period_bytes);
592 		delay = 0;
593 		chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
594 		chip->get_delay[stream] = NULL;
595 	}
596 
597 	return bytes_to_frames(substream->runtime, delay);
598 }
599 
600 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
601 
602 /* called from IRQ */
603 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
604 {
605 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
606 	int ok;
607 
608 	ok = azx_position_ok(chip, azx_dev);
609 	if (ok == 1) {
610 		azx_dev->irq_pending = 0;
611 		return ok;
612 	} else if (ok == 0) {
613 		/* bogus IRQ, process it later */
614 		azx_dev->irq_pending = 1;
615 		schedule_work(&hda->irq_pending_work);
616 	}
617 	return 0;
618 }
619 
620 /* Enable/disable i915 display power for the link */
621 static int azx_intel_link_power(struct azx *chip, bool enable)
622 {
623 	struct hdac_bus *bus = azx_bus(chip);
624 
625 	return snd_hdac_display_power(bus, enable);
626 }
627 
628 /*
629  * Check whether the current DMA position is acceptable for updating
630  * periods.  Returns non-zero if it's OK.
631  *
632  * Many HD-audio controllers appear pretty inaccurate about
633  * the update-IRQ timing.  The IRQ is issued before actually the
634  * data is processed.  So, we need to process it afterwords in a
635  * workqueue.
636  */
637 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
638 {
639 	struct snd_pcm_substream *substream = azx_dev->core.substream;
640 	int stream = substream->stream;
641 	u32 wallclk;
642 	unsigned int pos;
643 
644 	wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
645 	if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
646 		return -1;	/* bogus (too early) interrupt */
647 
648 	if (chip->get_position[stream])
649 		pos = chip->get_position[stream](chip, azx_dev);
650 	else { /* use the position buffer as default */
651 		pos = azx_get_pos_posbuf(chip, azx_dev);
652 		if (!pos || pos == (u32)-1) {
653 			dev_info(chip->card->dev,
654 				 "Invalid position buffer, using LPIB read method instead.\n");
655 			chip->get_position[stream] = azx_get_pos_lpib;
656 			if (chip->get_position[0] == azx_get_pos_lpib &&
657 			    chip->get_position[1] == azx_get_pos_lpib)
658 				azx_bus(chip)->use_posbuf = false;
659 			pos = azx_get_pos_lpib(chip, azx_dev);
660 			chip->get_delay[stream] = NULL;
661 		} else {
662 			chip->get_position[stream] = azx_get_pos_posbuf;
663 			if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
664 				chip->get_delay[stream] = azx_get_delay_from_lpib;
665 		}
666 	}
667 
668 	if (pos >= azx_dev->core.bufsize)
669 		pos = 0;
670 
671 	if (WARN_ONCE(!azx_dev->core.period_bytes,
672 		      "hda-intel: zero azx_dev->period_bytes"))
673 		return -1; /* this shouldn't happen! */
674 	if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
675 	    pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
676 		/* NG - it's below the first next period boundary */
677 		return chip->bdl_pos_adj ? 0 : -1;
678 	azx_dev->core.start_wallclk += wallclk;
679 	return 1; /* OK, it's fine */
680 }
681 
682 /*
683  * The work for pending PCM period updates.
684  */
685 static void azx_irq_pending_work(struct work_struct *work)
686 {
687 	struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
688 	struct azx *chip = &hda->chip;
689 	struct hdac_bus *bus = azx_bus(chip);
690 	struct hdac_stream *s;
691 	int pending, ok;
692 
693 	if (!hda->irq_pending_warned) {
694 		dev_info(chip->card->dev,
695 			 "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
696 			 chip->card->number);
697 		hda->irq_pending_warned = 1;
698 	}
699 
700 	for (;;) {
701 		pending = 0;
702 		spin_lock_irq(&bus->reg_lock);
703 		list_for_each_entry(s, &bus->stream_list, list) {
704 			struct azx_dev *azx_dev = stream_to_azx_dev(s);
705 			if (!azx_dev->irq_pending ||
706 			    !s->substream ||
707 			    !s->running)
708 				continue;
709 			ok = azx_position_ok(chip, azx_dev);
710 			if (ok > 0) {
711 				azx_dev->irq_pending = 0;
712 				spin_unlock(&bus->reg_lock);
713 				snd_pcm_period_elapsed(s->substream);
714 				spin_lock(&bus->reg_lock);
715 			} else if (ok < 0) {
716 				pending = 0;	/* too early */
717 			} else
718 				pending++;
719 		}
720 		spin_unlock_irq(&bus->reg_lock);
721 		if (!pending)
722 			return;
723 		msleep(1);
724 	}
725 }
726 
727 /* clear irq_pending flags and assure no on-going workq */
728 static void azx_clear_irq_pending(struct azx *chip)
729 {
730 	struct hdac_bus *bus = azx_bus(chip);
731 	struct hdac_stream *s;
732 
733 	spin_lock_irq(&bus->reg_lock);
734 	list_for_each_entry(s, &bus->stream_list, list) {
735 		struct azx_dev *azx_dev = stream_to_azx_dev(s);
736 		azx_dev->irq_pending = 0;
737 	}
738 	spin_unlock_irq(&bus->reg_lock);
739 }
740 
741 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
742 {
743 	struct hdac_bus *bus = azx_bus(chip);
744 
745 	if (request_irq(chip->pci->irq, azx_interrupt,
746 			chip->msi ? 0 : IRQF_SHARED,
747 			chip->card->irq_descr, chip)) {
748 		dev_err(chip->card->dev,
749 			"unable to grab IRQ %d, disabling device\n",
750 			chip->pci->irq);
751 		if (do_disconnect)
752 			snd_card_disconnect(chip->card);
753 		return -1;
754 	}
755 	bus->irq = chip->pci->irq;
756 	pci_intx(chip->pci, !chip->msi);
757 	return 0;
758 }
759 
760 /* get the current DMA position with correction on VIA chips */
761 static unsigned int azx_via_get_position(struct azx *chip,
762 					 struct azx_dev *azx_dev)
763 {
764 	unsigned int link_pos, mini_pos, bound_pos;
765 	unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
766 	unsigned int fifo_size;
767 
768 	link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
769 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
770 		/* Playback, no problem using link position */
771 		return link_pos;
772 	}
773 
774 	/* Capture */
775 	/* For new chipset,
776 	 * use mod to get the DMA position just like old chipset
777 	 */
778 	mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
779 	mod_dma_pos %= azx_dev->core.period_bytes;
780 
781 	/* azx_dev->fifo_size can't get FIFO size of in stream.
782 	 * Get from base address + offset.
783 	 */
784 	fifo_size = readw(azx_bus(chip)->remap_addr +
785 			  VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
786 
787 	if (azx_dev->insufficient) {
788 		/* Link position never gather than FIFO size */
789 		if (link_pos <= fifo_size)
790 			return 0;
791 
792 		azx_dev->insufficient = 0;
793 	}
794 
795 	if (link_pos <= fifo_size)
796 		mini_pos = azx_dev->core.bufsize + link_pos - fifo_size;
797 	else
798 		mini_pos = link_pos - fifo_size;
799 
800 	/* Find nearest previous boudary */
801 	mod_mini_pos = mini_pos % azx_dev->core.period_bytes;
802 	mod_link_pos = link_pos % azx_dev->core.period_bytes;
803 	if (mod_link_pos >= fifo_size)
804 		bound_pos = link_pos - mod_link_pos;
805 	else if (mod_dma_pos >= mod_mini_pos)
806 		bound_pos = mini_pos - mod_mini_pos;
807 	else {
808 		bound_pos = mini_pos - mod_mini_pos + azx_dev->core.period_bytes;
809 		if (bound_pos >= azx_dev->core.bufsize)
810 			bound_pos = 0;
811 	}
812 
813 	/* Calculate real DMA position we want */
814 	return bound_pos + mod_dma_pos;
815 }
816 
817 #ifdef CONFIG_PM
818 static DEFINE_MUTEX(card_list_lock);
819 static LIST_HEAD(card_list);
820 
821 static void azx_add_card_list(struct azx *chip)
822 {
823 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
824 	mutex_lock(&card_list_lock);
825 	list_add(&hda->list, &card_list);
826 	mutex_unlock(&card_list_lock);
827 }
828 
829 static void azx_del_card_list(struct azx *chip)
830 {
831 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
832 	mutex_lock(&card_list_lock);
833 	list_del_init(&hda->list);
834 	mutex_unlock(&card_list_lock);
835 }
836 
837 /* trigger power-save check at writing parameter */
838 static int param_set_xint(const char *val, const struct kernel_param *kp)
839 {
840 	struct hda_intel *hda;
841 	struct azx *chip;
842 	int prev = power_save;
843 	int ret = param_set_int(val, kp);
844 
845 	if (ret || prev == power_save)
846 		return ret;
847 
848 	mutex_lock(&card_list_lock);
849 	list_for_each_entry(hda, &card_list, list) {
850 		chip = &hda->chip;
851 		if (!hda->probe_continued || chip->disabled)
852 			continue;
853 		snd_hda_set_power_save(&chip->bus, power_save * 1000);
854 	}
855 	mutex_unlock(&card_list_lock);
856 	return 0;
857 }
858 #else
859 #define azx_add_card_list(chip) /* NOP */
860 #define azx_del_card_list(chip) /* NOP */
861 #endif /* CONFIG_PM */
862 
863 #if defined(CONFIG_PM_SLEEP) || defined(SUPPORT_VGA_SWITCHEROO)
864 /*
865  * power management
866  */
867 static int azx_suspend(struct device *dev)
868 {
869 	struct snd_card *card = dev_get_drvdata(dev);
870 	struct azx *chip;
871 	struct hda_intel *hda;
872 	struct hdac_bus *bus;
873 
874 	if (!card)
875 		return 0;
876 
877 	chip = card->private_data;
878 	hda = container_of(chip, struct hda_intel, chip);
879 	if (chip->disabled || hda->init_failed || !chip->running)
880 		return 0;
881 
882 	bus = azx_bus(chip);
883 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
884 	azx_clear_irq_pending(chip);
885 	azx_stop_chip(chip);
886 	azx_enter_link_reset(chip);
887 	if (bus->irq >= 0) {
888 		free_irq(bus->irq, chip);
889 		bus->irq = -1;
890 	}
891 
892 	if (chip->msi)
893 		pci_disable_msi(chip->pci);
894 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
895 		&& hda->need_i915_power)
896 		snd_hdac_display_power(bus, false);
897 
898 	trace_azx_suspend(chip);
899 	return 0;
900 }
901 
902 static int azx_resume(struct device *dev)
903 {
904 	struct pci_dev *pci = to_pci_dev(dev);
905 	struct snd_card *card = dev_get_drvdata(dev);
906 	struct azx *chip;
907 	struct hda_intel *hda;
908 
909 	if (!card)
910 		return 0;
911 
912 	chip = card->private_data;
913 	hda = container_of(chip, struct hda_intel, chip);
914 	if (chip->disabled || hda->init_failed || !chip->running)
915 		return 0;
916 
917 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
918 		&& hda->need_i915_power) {
919 		snd_hdac_display_power(azx_bus(chip), true);
920 		snd_hdac_i915_set_bclk(azx_bus(chip));
921 	}
922 	if (chip->msi)
923 		if (pci_enable_msi(pci) < 0)
924 			chip->msi = 0;
925 	if (azx_acquire_irq(chip, 1) < 0)
926 		return -EIO;
927 	azx_init_pci(chip);
928 
929 	hda_intel_init_chip(chip, true);
930 
931 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
932 
933 	trace_azx_resume(chip);
934 	return 0;
935 }
936 #endif /* CONFIG_PM_SLEEP || SUPPORT_VGA_SWITCHEROO */
937 
938 #ifdef CONFIG_PM_SLEEP
939 /* put codec down to D3 at hibernation for Intel SKL+;
940  * otherwise BIOS may still access the codec and screw up the driver
941  */
942 static int azx_freeze_noirq(struct device *dev)
943 {
944 	struct pci_dev *pci = to_pci_dev(dev);
945 
946 	if (IS_SKL_PLUS(pci))
947 		pci_set_power_state(pci, PCI_D3hot);
948 
949 	return 0;
950 }
951 
952 static int azx_thaw_noirq(struct device *dev)
953 {
954 	struct pci_dev *pci = to_pci_dev(dev);
955 
956 	if (IS_SKL_PLUS(pci))
957 		pci_set_power_state(pci, PCI_D0);
958 
959 	return 0;
960 }
961 #endif /* CONFIG_PM_SLEEP */
962 
963 #ifdef CONFIG_PM
964 static int azx_runtime_suspend(struct device *dev)
965 {
966 	struct snd_card *card = dev_get_drvdata(dev);
967 	struct azx *chip;
968 	struct hda_intel *hda;
969 
970 	if (!card)
971 		return 0;
972 
973 	chip = card->private_data;
974 	hda = container_of(chip, struct hda_intel, chip);
975 	if (chip->disabled || hda->init_failed)
976 		return 0;
977 
978 	if (!azx_has_pm_runtime(chip))
979 		return 0;
980 
981 	/* enable controller wake up event */
982 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
983 		  STATESTS_INT_MASK);
984 
985 	azx_stop_chip(chip);
986 	azx_enter_link_reset(chip);
987 	azx_clear_irq_pending(chip);
988 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
989 		&& hda->need_i915_power)
990 		snd_hdac_display_power(azx_bus(chip), false);
991 
992 	trace_azx_runtime_suspend(chip);
993 	return 0;
994 }
995 
996 static int azx_runtime_resume(struct device *dev)
997 {
998 	struct snd_card *card = dev_get_drvdata(dev);
999 	struct azx *chip;
1000 	struct hda_intel *hda;
1001 	struct hdac_bus *bus;
1002 	struct hda_codec *codec;
1003 	int status;
1004 
1005 	if (!card)
1006 		return 0;
1007 
1008 	chip = card->private_data;
1009 	hda = container_of(chip, struct hda_intel, chip);
1010 	if (chip->disabled || hda->init_failed)
1011 		return 0;
1012 
1013 	if (!azx_has_pm_runtime(chip))
1014 		return 0;
1015 
1016 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1017 		bus = azx_bus(chip);
1018 		if (hda->need_i915_power) {
1019 			snd_hdac_display_power(bus, true);
1020 			snd_hdac_i915_set_bclk(bus);
1021 		} else {
1022 			/* toggle codec wakeup bit for STATESTS read */
1023 			snd_hdac_set_codec_wakeup(bus, true);
1024 			snd_hdac_set_codec_wakeup(bus, false);
1025 		}
1026 	}
1027 
1028 	/* Read STATESTS before controller reset */
1029 	status = azx_readw(chip, STATESTS);
1030 
1031 	azx_init_pci(chip);
1032 	hda_intel_init_chip(chip, true);
1033 
1034 	if (status) {
1035 		list_for_each_codec(codec, &chip->bus)
1036 			if (status & (1 << codec->addr))
1037 				schedule_delayed_work(&codec->jackpoll_work,
1038 						      codec->jackpoll_interval);
1039 	}
1040 
1041 	/* disable controller Wake Up event*/
1042 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
1043 			~STATESTS_INT_MASK);
1044 
1045 	trace_azx_runtime_resume(chip);
1046 	return 0;
1047 }
1048 
1049 static int azx_runtime_idle(struct device *dev)
1050 {
1051 	struct snd_card *card = dev_get_drvdata(dev);
1052 	struct azx *chip;
1053 	struct hda_intel *hda;
1054 
1055 	if (!card)
1056 		return 0;
1057 
1058 	chip = card->private_data;
1059 	hda = container_of(chip, struct hda_intel, chip);
1060 	if (chip->disabled || hda->init_failed)
1061 		return 0;
1062 
1063 	if (!power_save_controller || !azx_has_pm_runtime(chip) ||
1064 	    azx_bus(chip)->codec_powered || !chip->running)
1065 		return -EBUSY;
1066 
1067 	return 0;
1068 }
1069 
1070 static const struct dev_pm_ops azx_pm = {
1071 	SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
1072 #ifdef CONFIG_PM_SLEEP
1073 	.freeze_noirq = azx_freeze_noirq,
1074 	.thaw_noirq = azx_thaw_noirq,
1075 #endif
1076 	SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
1077 };
1078 
1079 #define AZX_PM_OPS	&azx_pm
1080 #else
1081 #define AZX_PM_OPS	NULL
1082 #endif /* CONFIG_PM */
1083 
1084 
1085 static int azx_probe_continue(struct azx *chip);
1086 
1087 #ifdef SUPPORT_VGA_SWITCHEROO
1088 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
1089 
1090 static void azx_vs_set_state(struct pci_dev *pci,
1091 			     enum vga_switcheroo_state state)
1092 {
1093 	struct snd_card *card = pci_get_drvdata(pci);
1094 	struct azx *chip = card->private_data;
1095 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1096 	bool disabled;
1097 
1098 	wait_for_completion(&hda->probe_wait);
1099 	if (hda->init_failed)
1100 		return;
1101 
1102 	disabled = (state == VGA_SWITCHEROO_OFF);
1103 	if (chip->disabled == disabled)
1104 		return;
1105 
1106 	if (!hda->probe_continued) {
1107 		chip->disabled = disabled;
1108 		if (!disabled) {
1109 			dev_info(chip->card->dev,
1110 				 "Start delayed initialization\n");
1111 			if (azx_probe_continue(chip) < 0) {
1112 				dev_err(chip->card->dev, "initialization error\n");
1113 				hda->init_failed = true;
1114 			}
1115 		}
1116 	} else {
1117 		dev_info(chip->card->dev, "%s via vga_switcheroo\n",
1118 			 disabled ? "Disabling" : "Enabling");
1119 		if (disabled) {
1120 			pm_runtime_put_sync_suspend(card->dev);
1121 			azx_suspend(card->dev);
1122 			/* when we get suspended by vga_switcheroo we end up in D3cold,
1123 			 * however we have no ACPI handle, so pci/acpi can't put us there,
1124 			 * put ourselves there */
1125 			pci->current_state = PCI_D3cold;
1126 			chip->disabled = true;
1127 			if (snd_hda_lock_devices(&chip->bus))
1128 				dev_warn(chip->card->dev,
1129 					 "Cannot lock devices!\n");
1130 		} else {
1131 			snd_hda_unlock_devices(&chip->bus);
1132 			pm_runtime_get_noresume(card->dev);
1133 			chip->disabled = false;
1134 			azx_resume(card->dev);
1135 		}
1136 	}
1137 }
1138 
1139 static bool azx_vs_can_switch(struct pci_dev *pci)
1140 {
1141 	struct snd_card *card = pci_get_drvdata(pci);
1142 	struct azx *chip = card->private_data;
1143 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1144 
1145 	wait_for_completion(&hda->probe_wait);
1146 	if (hda->init_failed)
1147 		return false;
1148 	if (chip->disabled || !hda->probe_continued)
1149 		return true;
1150 	if (snd_hda_lock_devices(&chip->bus))
1151 		return false;
1152 	snd_hda_unlock_devices(&chip->bus);
1153 	return true;
1154 }
1155 
1156 static void init_vga_switcheroo(struct azx *chip)
1157 {
1158 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1159 	struct pci_dev *p = get_bound_vga(chip->pci);
1160 	if (p) {
1161 		dev_info(chip->card->dev,
1162 			 "Handle vga_switcheroo audio client\n");
1163 		hda->use_vga_switcheroo = 1;
1164 		pci_dev_put(p);
1165 	}
1166 }
1167 
1168 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1169 	.set_gpu_state = azx_vs_set_state,
1170 	.can_switch = azx_vs_can_switch,
1171 };
1172 
1173 static int register_vga_switcheroo(struct azx *chip)
1174 {
1175 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1176 	int err;
1177 
1178 	if (!hda->use_vga_switcheroo)
1179 		return 0;
1180 	/* FIXME: currently only handling DIS controller
1181 	 * is there any machine with two switchable HDMI audio controllers?
1182 	 */
1183 	err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops,
1184 						   VGA_SWITCHEROO_DIS);
1185 	if (err < 0)
1186 		return err;
1187 	hda->vga_switcheroo_registered = 1;
1188 
1189 	/* register as an optimus hdmi audio power domain */
1190 	vga_switcheroo_init_domain_pm_optimus_hdmi_audio(chip->card->dev,
1191 							 &hda->hdmi_pm_domain);
1192 	return 0;
1193 }
1194 #else
1195 #define init_vga_switcheroo(chip)		/* NOP */
1196 #define register_vga_switcheroo(chip)		0
1197 #define check_hdmi_disabled(pci)	false
1198 #endif /* SUPPORT_VGA_SWITCHER */
1199 
1200 /*
1201  * destructor
1202  */
1203 static int azx_free(struct azx *chip)
1204 {
1205 	struct pci_dev *pci = chip->pci;
1206 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1207 	struct hdac_bus *bus = azx_bus(chip);
1208 
1209 	if (azx_has_pm_runtime(chip) && chip->running)
1210 		pm_runtime_get_noresume(&pci->dev);
1211 
1212 	azx_del_card_list(chip);
1213 
1214 	hda->init_failed = 1; /* to be sure */
1215 	complete_all(&hda->probe_wait);
1216 
1217 	if (use_vga_switcheroo(hda)) {
1218 		if (chip->disabled && hda->probe_continued)
1219 			snd_hda_unlock_devices(&chip->bus);
1220 		if (hda->vga_switcheroo_registered)
1221 			vga_switcheroo_unregister_client(chip->pci);
1222 	}
1223 
1224 	if (bus->chip_init) {
1225 		azx_clear_irq_pending(chip);
1226 		azx_stop_all_streams(chip);
1227 		azx_stop_chip(chip);
1228 	}
1229 
1230 	if (bus->irq >= 0)
1231 		free_irq(bus->irq, (void*)chip);
1232 	if (chip->msi)
1233 		pci_disable_msi(chip->pci);
1234 	iounmap(bus->remap_addr);
1235 
1236 	azx_free_stream_pages(chip);
1237 	azx_free_streams(chip);
1238 	snd_hdac_bus_exit(bus);
1239 
1240 	if (chip->region_requested)
1241 		pci_release_regions(chip->pci);
1242 
1243 	pci_disable_device(chip->pci);
1244 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1245 	release_firmware(chip->fw);
1246 #endif
1247 
1248 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1249 		if (hda->need_i915_power)
1250 			snd_hdac_display_power(bus, false);
1251 		snd_hdac_i915_exit(bus);
1252 	}
1253 	kfree(hda);
1254 
1255 	return 0;
1256 }
1257 
1258 static int azx_dev_disconnect(struct snd_device *device)
1259 {
1260 	struct azx *chip = device->device_data;
1261 
1262 	chip->bus.shutdown = 1;
1263 	return 0;
1264 }
1265 
1266 static int azx_dev_free(struct snd_device *device)
1267 {
1268 	return azx_free(device->device_data);
1269 }
1270 
1271 #ifdef SUPPORT_VGA_SWITCHEROO
1272 /*
1273  * Check of disabled HDMI controller by vga_switcheroo
1274  */
1275 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1276 {
1277 	struct pci_dev *p;
1278 
1279 	/* check only discrete GPU */
1280 	switch (pci->vendor) {
1281 	case PCI_VENDOR_ID_ATI:
1282 	case PCI_VENDOR_ID_AMD:
1283 	case PCI_VENDOR_ID_NVIDIA:
1284 		if (pci->devfn == 1) {
1285 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1286 							pci->bus->number, 0);
1287 			if (p) {
1288 				if ((p->class >> 8) == PCI_CLASS_DISPLAY_VGA)
1289 					return p;
1290 				pci_dev_put(p);
1291 			}
1292 		}
1293 		break;
1294 	}
1295 	return NULL;
1296 }
1297 
1298 static bool check_hdmi_disabled(struct pci_dev *pci)
1299 {
1300 	bool vga_inactive = false;
1301 	struct pci_dev *p = get_bound_vga(pci);
1302 
1303 	if (p) {
1304 		if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1305 			vga_inactive = true;
1306 		pci_dev_put(p);
1307 	}
1308 	return vga_inactive;
1309 }
1310 #endif /* SUPPORT_VGA_SWITCHEROO */
1311 
1312 /*
1313  * white/black-listing for position_fix
1314  */
1315 static struct snd_pci_quirk position_fix_list[] = {
1316 	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1317 	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1318 	SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1319 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1320 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1321 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1322 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1323 	SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1324 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1325 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1326 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1327 	SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1328 	SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1329 	SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1330 	{}
1331 };
1332 
1333 static int check_position_fix(struct azx *chip, int fix)
1334 {
1335 	const struct snd_pci_quirk *q;
1336 
1337 	switch (fix) {
1338 	case POS_FIX_AUTO:
1339 	case POS_FIX_LPIB:
1340 	case POS_FIX_POSBUF:
1341 	case POS_FIX_VIACOMBO:
1342 	case POS_FIX_COMBO:
1343 		return fix;
1344 	}
1345 
1346 	q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1347 	if (q) {
1348 		dev_info(chip->card->dev,
1349 			 "position_fix set to %d for device %04x:%04x\n",
1350 			 q->value, q->subvendor, q->subdevice);
1351 		return q->value;
1352 	}
1353 
1354 	/* Check VIA/ATI HD Audio Controller exist */
1355 	if (chip->driver_type == AZX_DRIVER_VIA) {
1356 		dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1357 		return POS_FIX_VIACOMBO;
1358 	}
1359 	if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1360 		dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1361 		return POS_FIX_LPIB;
1362 	}
1363 	return POS_FIX_AUTO;
1364 }
1365 
1366 static void assign_position_fix(struct azx *chip, int fix)
1367 {
1368 	static azx_get_pos_callback_t callbacks[] = {
1369 		[POS_FIX_AUTO] = NULL,
1370 		[POS_FIX_LPIB] = azx_get_pos_lpib,
1371 		[POS_FIX_POSBUF] = azx_get_pos_posbuf,
1372 		[POS_FIX_VIACOMBO] = azx_via_get_position,
1373 		[POS_FIX_COMBO] = azx_get_pos_lpib,
1374 	};
1375 
1376 	chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1377 
1378 	/* combo mode uses LPIB only for playback */
1379 	if (fix == POS_FIX_COMBO)
1380 		chip->get_position[1] = NULL;
1381 
1382 	if (fix == POS_FIX_POSBUF &&
1383 	    (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1384 		chip->get_delay[0] = chip->get_delay[1] =
1385 			azx_get_delay_from_lpib;
1386 	}
1387 
1388 }
1389 
1390 /*
1391  * black-lists for probe_mask
1392  */
1393 static struct snd_pci_quirk probe_mask_list[] = {
1394 	/* Thinkpad often breaks the controller communication when accessing
1395 	 * to the non-working (or non-existing) modem codec slot.
1396 	 */
1397 	SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1398 	SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1399 	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1400 	/* broken BIOS */
1401 	SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1402 	/* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1403 	SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1404 	/* forced codec slots */
1405 	SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1406 	SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1407 	/* WinFast VP200 H (Teradici) user reported broken communication */
1408 	SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1409 	{}
1410 };
1411 
1412 #define AZX_FORCE_CODEC_MASK	0x100
1413 
1414 static void check_probe_mask(struct azx *chip, int dev)
1415 {
1416 	const struct snd_pci_quirk *q;
1417 
1418 	chip->codec_probe_mask = probe_mask[dev];
1419 	if (chip->codec_probe_mask == -1) {
1420 		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1421 		if (q) {
1422 			dev_info(chip->card->dev,
1423 				 "probe_mask set to 0x%x for device %04x:%04x\n",
1424 				 q->value, q->subvendor, q->subdevice);
1425 			chip->codec_probe_mask = q->value;
1426 		}
1427 	}
1428 
1429 	/* check forced option */
1430 	if (chip->codec_probe_mask != -1 &&
1431 	    (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1432 		azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
1433 		dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1434 			 (int)azx_bus(chip)->codec_mask);
1435 	}
1436 }
1437 
1438 /*
1439  * white/black-list for enable_msi
1440  */
1441 static struct snd_pci_quirk msi_black_list[] = {
1442 	SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1443 	SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1444 	SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1445 	SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1446 	SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1447 	SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1448 	SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1449 	SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1450 	SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1451 	SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1452 	{}
1453 };
1454 
1455 static void check_msi(struct azx *chip)
1456 {
1457 	const struct snd_pci_quirk *q;
1458 
1459 	if (enable_msi >= 0) {
1460 		chip->msi = !!enable_msi;
1461 		return;
1462 	}
1463 	chip->msi = 1;	/* enable MSI as default */
1464 	q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
1465 	if (q) {
1466 		dev_info(chip->card->dev,
1467 			 "msi for device %04x:%04x set to %d\n",
1468 			 q->subvendor, q->subdevice, q->value);
1469 		chip->msi = q->value;
1470 		return;
1471 	}
1472 
1473 	/* NVidia chipsets seem to cause troubles with MSI */
1474 	if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1475 		dev_info(chip->card->dev, "Disabling MSI\n");
1476 		chip->msi = 0;
1477 	}
1478 }
1479 
1480 /* check the snoop mode availability */
1481 static void azx_check_snoop_available(struct azx *chip)
1482 {
1483 	int snoop = hda_snoop;
1484 
1485 	if (snoop >= 0) {
1486 		dev_info(chip->card->dev, "Force to %s mode by module option\n",
1487 			 snoop ? "snoop" : "non-snoop");
1488 		chip->snoop = snoop;
1489 		return;
1490 	}
1491 
1492 	snoop = true;
1493 	if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
1494 	    chip->driver_type == AZX_DRIVER_VIA) {
1495 		/* force to non-snoop mode for a new VIA controller
1496 		 * when BIOS is set
1497 		 */
1498 		u8 val;
1499 		pci_read_config_byte(chip->pci, 0x42, &val);
1500 		if (!(val & 0x80) && chip->pci->revision == 0x30)
1501 			snoop = false;
1502 	}
1503 
1504 	if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
1505 		snoop = false;
1506 
1507 	chip->snoop = snoop;
1508 	if (!snoop)
1509 		dev_info(chip->card->dev, "Force to non-snoop mode\n");
1510 }
1511 
1512 static void azx_probe_work(struct work_struct *work)
1513 {
1514 	struct hda_intel *hda = container_of(work, struct hda_intel, probe_work);
1515 	azx_probe_continue(&hda->chip);
1516 }
1517 
1518 static int default_bdl_pos_adj(struct azx *chip)
1519 {
1520 	/* some exceptions: Atoms seem problematic with value 1 */
1521 	if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
1522 		switch (chip->pci->device) {
1523 		case 0x0f04: /* Baytrail */
1524 		case 0x2284: /* Braswell */
1525 			return 32;
1526 		}
1527 	}
1528 
1529 	switch (chip->driver_type) {
1530 	case AZX_DRIVER_ICH:
1531 	case AZX_DRIVER_PCH:
1532 		return 1;
1533 	default:
1534 		return 32;
1535 	}
1536 }
1537 
1538 /*
1539  * constructor
1540  */
1541 static const struct hdac_io_ops pci_hda_io_ops;
1542 static const struct hda_controller_ops pci_hda_ops;
1543 
1544 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1545 		      int dev, unsigned int driver_caps,
1546 		      struct azx **rchip)
1547 {
1548 	static struct snd_device_ops ops = {
1549 		.dev_disconnect = azx_dev_disconnect,
1550 		.dev_free = azx_dev_free,
1551 	};
1552 	struct hda_intel *hda;
1553 	struct azx *chip;
1554 	int err;
1555 
1556 	*rchip = NULL;
1557 
1558 	err = pci_enable_device(pci);
1559 	if (err < 0)
1560 		return err;
1561 
1562 	hda = kzalloc(sizeof(*hda), GFP_KERNEL);
1563 	if (!hda) {
1564 		pci_disable_device(pci);
1565 		return -ENOMEM;
1566 	}
1567 
1568 	chip = &hda->chip;
1569 	mutex_init(&chip->open_mutex);
1570 	chip->card = card;
1571 	chip->pci = pci;
1572 	chip->ops = &pci_hda_ops;
1573 	chip->driver_caps = driver_caps;
1574 	chip->driver_type = driver_caps & 0xff;
1575 	check_msi(chip);
1576 	chip->dev_index = dev;
1577 	chip->jackpoll_ms = jackpoll_ms;
1578 	INIT_LIST_HEAD(&chip->pcm_list);
1579 	INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1580 	INIT_LIST_HEAD(&hda->list);
1581 	init_vga_switcheroo(chip);
1582 	init_completion(&hda->probe_wait);
1583 
1584 	assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1585 
1586 	check_probe_mask(chip, dev);
1587 
1588 	chip->single_cmd = single_cmd;
1589 	azx_check_snoop_available(chip);
1590 
1591 	if (bdl_pos_adj[dev] < 0)
1592 		chip->bdl_pos_adj = default_bdl_pos_adj(chip);
1593 	else
1594 		chip->bdl_pos_adj = bdl_pos_adj[dev];
1595 
1596 	err = azx_bus_init(chip, model[dev], &pci_hda_io_ops);
1597 	if (err < 0) {
1598 		kfree(hda);
1599 		pci_disable_device(pci);
1600 		return err;
1601 	}
1602 
1603 	if (chip->driver_type == AZX_DRIVER_NVIDIA) {
1604 		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
1605 		chip->bus.needs_damn_long_delay = 1;
1606 	}
1607 
1608 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1609 	if (err < 0) {
1610 		dev_err(card->dev, "Error creating device [card]!\n");
1611 		azx_free(chip);
1612 		return err;
1613 	}
1614 
1615 	/* continue probing in work context as may trigger request module */
1616 	INIT_WORK(&hda->probe_work, azx_probe_work);
1617 
1618 	*rchip = chip;
1619 
1620 	return 0;
1621 }
1622 
1623 static int azx_first_init(struct azx *chip)
1624 {
1625 	int dev = chip->dev_index;
1626 	struct pci_dev *pci = chip->pci;
1627 	struct snd_card *card = chip->card;
1628 	struct hdac_bus *bus = azx_bus(chip);
1629 	int err;
1630 	unsigned short gcap;
1631 	unsigned int dma_bits = 64;
1632 
1633 #if BITS_PER_LONG != 64
1634 	/* Fix up base address on ULI M5461 */
1635 	if (chip->driver_type == AZX_DRIVER_ULI) {
1636 		u16 tmp3;
1637 		pci_read_config_word(pci, 0x40, &tmp3);
1638 		pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1639 		pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1640 	}
1641 #endif
1642 
1643 	err = pci_request_regions(pci, "ICH HD audio");
1644 	if (err < 0)
1645 		return err;
1646 	chip->region_requested = 1;
1647 
1648 	bus->addr = pci_resource_start(pci, 0);
1649 	bus->remap_addr = pci_ioremap_bar(pci, 0);
1650 	if (bus->remap_addr == NULL) {
1651 		dev_err(card->dev, "ioremap error\n");
1652 		return -ENXIO;
1653 	}
1654 
1655 	if (chip->msi) {
1656 		if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
1657 			dev_dbg(card->dev, "Disabling 64bit MSI\n");
1658 			pci->no_64bit_msi = true;
1659 		}
1660 		if (pci_enable_msi(pci) < 0)
1661 			chip->msi = 0;
1662 	}
1663 
1664 	if (azx_acquire_irq(chip, 0) < 0)
1665 		return -EBUSY;
1666 
1667 	pci_set_master(pci);
1668 	synchronize_irq(bus->irq);
1669 
1670 	gcap = azx_readw(chip, GCAP);
1671 	dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1672 
1673 	/* AMD devices support 40 or 48bit DMA, take the safe one */
1674 	if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
1675 		dma_bits = 40;
1676 
1677 	/* disable SB600 64bit support for safety */
1678 	if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1679 		struct pci_dev *p_smbus;
1680 		dma_bits = 40;
1681 		p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1682 					 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1683 					 NULL);
1684 		if (p_smbus) {
1685 			if (p_smbus->revision < 0x30)
1686 				gcap &= ~AZX_GCAP_64OK;
1687 			pci_dev_put(p_smbus);
1688 		}
1689 	}
1690 
1691 	/* disable 64bit DMA address on some devices */
1692 	if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1693 		dev_dbg(card->dev, "Disabling 64bit DMA\n");
1694 		gcap &= ~AZX_GCAP_64OK;
1695 	}
1696 
1697 	/* disable buffer size rounding to 128-byte multiples if supported */
1698 	if (align_buffer_size >= 0)
1699 		chip->align_buffer_size = !!align_buffer_size;
1700 	else {
1701 		if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
1702 			chip->align_buffer_size = 0;
1703 		else
1704 			chip->align_buffer_size = 1;
1705 	}
1706 
1707 	/* allow 64bit DMA address if supported by H/W */
1708 	if (!(gcap & AZX_GCAP_64OK))
1709 		dma_bits = 32;
1710 	if (!dma_set_mask(&pci->dev, DMA_BIT_MASK(dma_bits))) {
1711 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(dma_bits));
1712 	} else {
1713 		dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
1714 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32));
1715 	}
1716 
1717 	/* read number of streams from GCAP register instead of using
1718 	 * hardcoded value
1719 	 */
1720 	chip->capture_streams = (gcap >> 8) & 0x0f;
1721 	chip->playback_streams = (gcap >> 12) & 0x0f;
1722 	if (!chip->playback_streams && !chip->capture_streams) {
1723 		/* gcap didn't give any info, switching to old method */
1724 
1725 		switch (chip->driver_type) {
1726 		case AZX_DRIVER_ULI:
1727 			chip->playback_streams = ULI_NUM_PLAYBACK;
1728 			chip->capture_streams = ULI_NUM_CAPTURE;
1729 			break;
1730 		case AZX_DRIVER_ATIHDMI:
1731 		case AZX_DRIVER_ATIHDMI_NS:
1732 			chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1733 			chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1734 			break;
1735 		case AZX_DRIVER_GENERIC:
1736 		default:
1737 			chip->playback_streams = ICH6_NUM_PLAYBACK;
1738 			chip->capture_streams = ICH6_NUM_CAPTURE;
1739 			break;
1740 		}
1741 	}
1742 	chip->capture_index_offset = 0;
1743 	chip->playback_index_offset = chip->capture_streams;
1744 	chip->num_streams = chip->playback_streams + chip->capture_streams;
1745 
1746 	/* initialize streams */
1747 	err = azx_init_streams(chip);
1748 	if (err < 0)
1749 		return err;
1750 
1751 	err = azx_alloc_stream_pages(chip);
1752 	if (err < 0)
1753 		return err;
1754 
1755 	/* initialize chip */
1756 	azx_init_pci(chip);
1757 
1758 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
1759 		snd_hdac_i915_set_bclk(bus);
1760 
1761 	hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
1762 
1763 	/* codec detection */
1764 	if (!azx_bus(chip)->codec_mask) {
1765 		dev_err(card->dev, "no codecs found!\n");
1766 		return -ENODEV;
1767 	}
1768 
1769 	strcpy(card->driver, "HDA-Intel");
1770 	strlcpy(card->shortname, driver_short_names[chip->driver_type],
1771 		sizeof(card->shortname));
1772 	snprintf(card->longname, sizeof(card->longname),
1773 		 "%s at 0x%lx irq %i",
1774 		 card->shortname, bus->addr, bus->irq);
1775 
1776 	return 0;
1777 }
1778 
1779 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1780 /* callback from request_firmware_nowait() */
1781 static void azx_firmware_cb(const struct firmware *fw, void *context)
1782 {
1783 	struct snd_card *card = context;
1784 	struct azx *chip = card->private_data;
1785 	struct pci_dev *pci = chip->pci;
1786 
1787 	if (!fw) {
1788 		dev_err(card->dev, "Cannot load firmware, aborting\n");
1789 		goto error;
1790 	}
1791 
1792 	chip->fw = fw;
1793 	if (!chip->disabled) {
1794 		/* continue probing */
1795 		if (azx_probe_continue(chip))
1796 			goto error;
1797 	}
1798 	return; /* OK */
1799 
1800  error:
1801 	snd_card_free(card);
1802 	pci_set_drvdata(pci, NULL);
1803 }
1804 #endif
1805 
1806 /*
1807  * HDA controller ops.
1808  */
1809 
1810 /* PCI register access. */
1811 static void pci_azx_writel(u32 value, u32 __iomem *addr)
1812 {
1813 	writel(value, addr);
1814 }
1815 
1816 static u32 pci_azx_readl(u32 __iomem *addr)
1817 {
1818 	return readl(addr);
1819 }
1820 
1821 static void pci_azx_writew(u16 value, u16 __iomem *addr)
1822 {
1823 	writew(value, addr);
1824 }
1825 
1826 static u16 pci_azx_readw(u16 __iomem *addr)
1827 {
1828 	return readw(addr);
1829 }
1830 
1831 static void pci_azx_writeb(u8 value, u8 __iomem *addr)
1832 {
1833 	writeb(value, addr);
1834 }
1835 
1836 static u8 pci_azx_readb(u8 __iomem *addr)
1837 {
1838 	return readb(addr);
1839 }
1840 
1841 static int disable_msi_reset_irq(struct azx *chip)
1842 {
1843 	struct hdac_bus *bus = azx_bus(chip);
1844 	int err;
1845 
1846 	free_irq(bus->irq, chip);
1847 	bus->irq = -1;
1848 	pci_disable_msi(chip->pci);
1849 	chip->msi = 0;
1850 	err = azx_acquire_irq(chip, 1);
1851 	if (err < 0)
1852 		return err;
1853 
1854 	return 0;
1855 }
1856 
1857 /* DMA page allocation helpers.  */
1858 static int dma_alloc_pages(struct hdac_bus *bus,
1859 			   int type,
1860 			   size_t size,
1861 			   struct snd_dma_buffer *buf)
1862 {
1863 	struct azx *chip = bus_to_azx(bus);
1864 	int err;
1865 
1866 	err = snd_dma_alloc_pages(type,
1867 				  bus->dev,
1868 				  size, buf);
1869 	if (err < 0)
1870 		return err;
1871 	mark_pages_wc(chip, buf, true);
1872 	return 0;
1873 }
1874 
1875 static void dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf)
1876 {
1877 	struct azx *chip = bus_to_azx(bus);
1878 
1879 	mark_pages_wc(chip, buf, false);
1880 	snd_dma_free_pages(buf);
1881 }
1882 
1883 static int substream_alloc_pages(struct azx *chip,
1884 				 struct snd_pcm_substream *substream,
1885 				 size_t size)
1886 {
1887 	struct azx_dev *azx_dev = get_azx_dev(substream);
1888 	int ret;
1889 
1890 	mark_runtime_wc(chip, azx_dev, substream, false);
1891 	ret = snd_pcm_lib_malloc_pages(substream, size);
1892 	if (ret < 0)
1893 		return ret;
1894 	mark_runtime_wc(chip, azx_dev, substream, true);
1895 	return 0;
1896 }
1897 
1898 static int substream_free_pages(struct azx *chip,
1899 				struct snd_pcm_substream *substream)
1900 {
1901 	struct azx_dev *azx_dev = get_azx_dev(substream);
1902 	mark_runtime_wc(chip, azx_dev, substream, false);
1903 	return snd_pcm_lib_free_pages(substream);
1904 }
1905 
1906 static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
1907 			     struct vm_area_struct *area)
1908 {
1909 #ifdef CONFIG_X86
1910 	struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1911 	struct azx *chip = apcm->chip;
1912 	if (!azx_snoop(chip) && chip->driver_type != AZX_DRIVER_CMEDIA)
1913 		area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
1914 #endif
1915 }
1916 
1917 static const struct hdac_io_ops pci_hda_io_ops = {
1918 	.reg_writel = pci_azx_writel,
1919 	.reg_readl = pci_azx_readl,
1920 	.reg_writew = pci_azx_writew,
1921 	.reg_readw = pci_azx_readw,
1922 	.reg_writeb = pci_azx_writeb,
1923 	.reg_readb = pci_azx_readb,
1924 	.dma_alloc_pages = dma_alloc_pages,
1925 	.dma_free_pages = dma_free_pages,
1926 };
1927 
1928 static const struct hda_controller_ops pci_hda_ops = {
1929 	.disable_msi_reset_irq = disable_msi_reset_irq,
1930 	.substream_alloc_pages = substream_alloc_pages,
1931 	.substream_free_pages = substream_free_pages,
1932 	.pcm_mmap_prepare = pcm_mmap_prepare,
1933 	.position_check = azx_position_check,
1934 	.link_power = azx_intel_link_power,
1935 };
1936 
1937 static int azx_probe(struct pci_dev *pci,
1938 		     const struct pci_device_id *pci_id)
1939 {
1940 	static int dev;
1941 	struct snd_card *card;
1942 	struct hda_intel *hda;
1943 	struct azx *chip;
1944 	bool schedule_probe;
1945 	int err;
1946 
1947 	if (dev >= SNDRV_CARDS)
1948 		return -ENODEV;
1949 	if (!enable[dev]) {
1950 		dev++;
1951 		return -ENOENT;
1952 	}
1953 
1954 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1955 			   0, &card);
1956 	if (err < 0) {
1957 		dev_err(&pci->dev, "Error creating card!\n");
1958 		return err;
1959 	}
1960 
1961 	err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
1962 	if (err < 0)
1963 		goto out_free;
1964 	card->private_data = chip;
1965 	hda = container_of(chip, struct hda_intel, chip);
1966 
1967 	pci_set_drvdata(pci, card);
1968 
1969 	err = register_vga_switcheroo(chip);
1970 	if (err < 0) {
1971 		dev_err(card->dev, "Error registering vga_switcheroo client\n");
1972 		goto out_free;
1973 	}
1974 
1975 	if (check_hdmi_disabled(pci)) {
1976 		dev_info(card->dev, "VGA controller is disabled\n");
1977 		dev_info(card->dev, "Delaying initialization\n");
1978 		chip->disabled = true;
1979 	}
1980 
1981 	schedule_probe = !chip->disabled;
1982 
1983 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1984 	if (patch[dev] && *patch[dev]) {
1985 		dev_info(card->dev, "Applying patch firmware '%s'\n",
1986 			 patch[dev]);
1987 		err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
1988 					      &pci->dev, GFP_KERNEL, card,
1989 					      azx_firmware_cb);
1990 		if (err < 0)
1991 			goto out_free;
1992 		schedule_probe = false; /* continued in azx_firmware_cb() */
1993 	}
1994 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
1995 
1996 #ifndef CONFIG_SND_HDA_I915
1997 	if (CONTROLLER_IN_GPU(pci))
1998 		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
1999 #endif
2000 
2001 	if (schedule_probe)
2002 		schedule_work(&hda->probe_work);
2003 
2004 	dev++;
2005 	if (chip->disabled)
2006 		complete_all(&hda->probe_wait);
2007 	return 0;
2008 
2009 out_free:
2010 	snd_card_free(card);
2011 	return err;
2012 }
2013 
2014 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
2015 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
2016 	[AZX_DRIVER_NVIDIA] = 8,
2017 	[AZX_DRIVER_TERA] = 1,
2018 };
2019 
2020 static int azx_probe_continue(struct azx *chip)
2021 {
2022 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
2023 	struct hdac_bus *bus = azx_bus(chip);
2024 	struct pci_dev *pci = chip->pci;
2025 	int dev = chip->dev_index;
2026 	int err;
2027 
2028 	hda->probe_continued = 1;
2029 
2030 	/* Request display power well for the HDA controller or codec. For
2031 	 * Haswell/Broadwell, both the display HDA controller and codec need
2032 	 * this power. For other platforms, like Baytrail/Braswell, only the
2033 	 * display codec needs the power and it can be released after probe.
2034 	 */
2035 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
2036 		/* HSW/BDW controllers need this power */
2037 		if (CONTROLLER_IN_GPU(pci))
2038 			hda->need_i915_power = 1;
2039 
2040 		err = snd_hdac_i915_init(bus);
2041 		if (err < 0) {
2042 			/* if the controller is bound only with HDMI/DP
2043 			 * (for HSW and BDW), we need to abort the probe;
2044 			 * for other chips, still continue probing as other
2045 			 * codecs can be on the same link.
2046 			 */
2047 			if (CONTROLLER_IN_GPU(pci)) {
2048 				dev_err(chip->card->dev,
2049 					"HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
2050 				goto out_free;
2051 			} else
2052 				goto skip_i915;
2053 		}
2054 
2055 		err = snd_hdac_display_power(bus, true);
2056 		if (err < 0) {
2057 			dev_err(chip->card->dev,
2058 				"Cannot turn on display power on i915\n");
2059 			goto i915_power_fail;
2060 		}
2061 	}
2062 
2063  skip_i915:
2064 	err = azx_first_init(chip);
2065 	if (err < 0)
2066 		goto out_free;
2067 
2068 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2069 	chip->beep_mode = beep_mode[dev];
2070 #endif
2071 
2072 	/* create codec instances */
2073 	err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
2074 	if (err < 0)
2075 		goto out_free;
2076 
2077 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2078 	if (chip->fw) {
2079 		err = snd_hda_load_patch(&chip->bus, chip->fw->size,
2080 					 chip->fw->data);
2081 		if (err < 0)
2082 			goto out_free;
2083 #ifndef CONFIG_PM
2084 		release_firmware(chip->fw); /* no longer needed */
2085 		chip->fw = NULL;
2086 #endif
2087 	}
2088 #endif
2089 	if ((probe_only[dev] & 1) == 0) {
2090 		err = azx_codec_configure(chip);
2091 		if (err < 0)
2092 			goto out_free;
2093 	}
2094 
2095 	err = snd_card_register(chip->card);
2096 	if (err < 0)
2097 		goto out_free;
2098 
2099 	chip->running = 1;
2100 	azx_add_card_list(chip);
2101 	snd_hda_set_power_save(&chip->bus, power_save * 1000);
2102 	if (azx_has_pm_runtime(chip) || hda->use_vga_switcheroo)
2103 		pm_runtime_put_autosuspend(&pci->dev);
2104 
2105 out_free:
2106 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
2107 		&& !hda->need_i915_power)
2108 		snd_hdac_display_power(bus, false);
2109 
2110 i915_power_fail:
2111 	if (err < 0)
2112 		hda->init_failed = 1;
2113 	complete_all(&hda->probe_wait);
2114 	return err;
2115 }
2116 
2117 static void azx_remove(struct pci_dev *pci)
2118 {
2119 	struct snd_card *card = pci_get_drvdata(pci);
2120 	struct azx *chip;
2121 	struct hda_intel *hda;
2122 
2123 	if (card) {
2124 		/* cancel the pending probing work */
2125 		chip = card->private_data;
2126 		hda = container_of(chip, struct hda_intel, chip);
2127 		cancel_work_sync(&hda->probe_work);
2128 
2129 		snd_card_free(card);
2130 	}
2131 }
2132 
2133 static void azx_shutdown(struct pci_dev *pci)
2134 {
2135 	struct snd_card *card = pci_get_drvdata(pci);
2136 	struct azx *chip;
2137 
2138 	if (!card)
2139 		return;
2140 	chip = card->private_data;
2141 	if (chip && chip->running)
2142 		azx_stop_chip(chip);
2143 }
2144 
2145 /* PCI IDs */
2146 static const struct pci_device_id azx_ids[] = {
2147 	/* CPT */
2148 	{ PCI_DEVICE(0x8086, 0x1c20),
2149 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2150 	/* PBG */
2151 	{ PCI_DEVICE(0x8086, 0x1d20),
2152 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2153 	/* Panther Point */
2154 	{ PCI_DEVICE(0x8086, 0x1e20),
2155 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2156 	/* Lynx Point */
2157 	{ PCI_DEVICE(0x8086, 0x8c20),
2158 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2159 	/* 9 Series */
2160 	{ PCI_DEVICE(0x8086, 0x8ca0),
2161 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2162 	/* Wellsburg */
2163 	{ PCI_DEVICE(0x8086, 0x8d20),
2164 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2165 	{ PCI_DEVICE(0x8086, 0x8d21),
2166 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2167 	/* Lewisburg */
2168 	{ PCI_DEVICE(0x8086, 0xa1f0),
2169 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2170 	{ PCI_DEVICE(0x8086, 0xa270),
2171 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2172 	/* Lynx Point-LP */
2173 	{ PCI_DEVICE(0x8086, 0x9c20),
2174 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2175 	/* Lynx Point-LP */
2176 	{ PCI_DEVICE(0x8086, 0x9c21),
2177 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2178 	/* Wildcat Point-LP */
2179 	{ PCI_DEVICE(0x8086, 0x9ca0),
2180 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2181 	/* Sunrise Point */
2182 	{ PCI_DEVICE(0x8086, 0xa170),
2183 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2184 	/* Sunrise Point-LP */
2185 	{ PCI_DEVICE(0x8086, 0x9d70),
2186 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2187 	/* Kabylake */
2188 	{ PCI_DEVICE(0x8086, 0xa171),
2189 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2190 	/* Kabylake-LP */
2191 	{ PCI_DEVICE(0x8086, 0x9d71),
2192 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2193 	/* Broxton-P(Apollolake) */
2194 	{ PCI_DEVICE(0x8086, 0x5a98),
2195 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
2196 	/* Broxton-T */
2197 	{ PCI_DEVICE(0x8086, 0x1a98),
2198 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
2199 	/* Haswell */
2200 	{ PCI_DEVICE(0x8086, 0x0a0c),
2201 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2202 	{ PCI_DEVICE(0x8086, 0x0c0c),
2203 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2204 	{ PCI_DEVICE(0x8086, 0x0d0c),
2205 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2206 	/* Broadwell */
2207 	{ PCI_DEVICE(0x8086, 0x160c),
2208 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL },
2209 	/* 5 Series/3400 */
2210 	{ PCI_DEVICE(0x8086, 0x3b56),
2211 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2212 	/* Poulsbo */
2213 	{ PCI_DEVICE(0x8086, 0x811b),
2214 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2215 	/* Oaktrail */
2216 	{ PCI_DEVICE(0x8086, 0x080a),
2217 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2218 	/* BayTrail */
2219 	{ PCI_DEVICE(0x8086, 0x0f04),
2220 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL },
2221 	/* Braswell */
2222 	{ PCI_DEVICE(0x8086, 0x2284),
2223 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL },
2224 	/* ICH6 */
2225 	{ PCI_DEVICE(0x8086, 0x2668),
2226 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2227 	/* ICH7 */
2228 	{ PCI_DEVICE(0x8086, 0x27d8),
2229 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2230 	/* ESB2 */
2231 	{ PCI_DEVICE(0x8086, 0x269a),
2232 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2233 	/* ICH8 */
2234 	{ PCI_DEVICE(0x8086, 0x284b),
2235 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2236 	/* ICH9 */
2237 	{ PCI_DEVICE(0x8086, 0x293e),
2238 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2239 	/* ICH9 */
2240 	{ PCI_DEVICE(0x8086, 0x293f),
2241 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2242 	/* ICH10 */
2243 	{ PCI_DEVICE(0x8086, 0x3a3e),
2244 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2245 	/* ICH10 */
2246 	{ PCI_DEVICE(0x8086, 0x3a6e),
2247 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2248 	/* Generic Intel */
2249 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2250 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2251 	  .class_mask = 0xffffff,
2252 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
2253 	/* ATI SB 450/600/700/800/900 */
2254 	{ PCI_DEVICE(0x1002, 0x437b),
2255 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2256 	{ PCI_DEVICE(0x1002, 0x4383),
2257 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2258 	/* AMD Hudson */
2259 	{ PCI_DEVICE(0x1022, 0x780d),
2260 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2261 	/* ATI HDMI */
2262 	{ PCI_DEVICE(0x1002, 0x1308),
2263 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2264 	{ PCI_DEVICE(0x1002, 0x157a),
2265 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2266 	{ PCI_DEVICE(0x1002, 0x793b),
2267 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2268 	{ PCI_DEVICE(0x1002, 0x7919),
2269 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2270 	{ PCI_DEVICE(0x1002, 0x960f),
2271 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2272 	{ PCI_DEVICE(0x1002, 0x970f),
2273 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2274 	{ PCI_DEVICE(0x1002, 0x9840),
2275 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2276 	{ PCI_DEVICE(0x1002, 0xaa00),
2277 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2278 	{ PCI_DEVICE(0x1002, 0xaa08),
2279 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2280 	{ PCI_DEVICE(0x1002, 0xaa10),
2281 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2282 	{ PCI_DEVICE(0x1002, 0xaa18),
2283 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2284 	{ PCI_DEVICE(0x1002, 0xaa20),
2285 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2286 	{ PCI_DEVICE(0x1002, 0xaa28),
2287 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2288 	{ PCI_DEVICE(0x1002, 0xaa30),
2289 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2290 	{ PCI_DEVICE(0x1002, 0xaa38),
2291 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2292 	{ PCI_DEVICE(0x1002, 0xaa40),
2293 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2294 	{ PCI_DEVICE(0x1002, 0xaa48),
2295 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2296 	{ PCI_DEVICE(0x1002, 0xaa50),
2297 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2298 	{ PCI_DEVICE(0x1002, 0xaa58),
2299 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2300 	{ PCI_DEVICE(0x1002, 0xaa60),
2301 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2302 	{ PCI_DEVICE(0x1002, 0xaa68),
2303 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2304 	{ PCI_DEVICE(0x1002, 0xaa80),
2305 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2306 	{ PCI_DEVICE(0x1002, 0xaa88),
2307 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2308 	{ PCI_DEVICE(0x1002, 0xaa90),
2309 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2310 	{ PCI_DEVICE(0x1002, 0xaa98),
2311 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2312 	{ PCI_DEVICE(0x1002, 0x9902),
2313 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2314 	{ PCI_DEVICE(0x1002, 0xaaa0),
2315 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2316 	{ PCI_DEVICE(0x1002, 0xaaa8),
2317 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2318 	{ PCI_DEVICE(0x1002, 0xaab0),
2319 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2320 	{ PCI_DEVICE(0x1002, 0xaac0),
2321 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2322 	{ PCI_DEVICE(0x1002, 0xaac8),
2323 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2324 	{ PCI_DEVICE(0x1002, 0xaad8),
2325 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2326 	{ PCI_DEVICE(0x1002, 0xaae8),
2327 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2328 	{ PCI_DEVICE(0x1002, 0xaae0),
2329 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2330 	{ PCI_DEVICE(0x1002, 0xaaf0),
2331 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2332 	/* VIA VT8251/VT8237A */
2333 	{ PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2334 	/* VIA GFX VT7122/VX900 */
2335 	{ PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2336 	/* VIA GFX VT6122/VX11 */
2337 	{ PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2338 	/* SIS966 */
2339 	{ PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2340 	/* ULI M5461 */
2341 	{ PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2342 	/* NVIDIA MCP */
2343 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2344 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2345 	  .class_mask = 0xffffff,
2346 	  .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2347 	/* Teradici */
2348 	{ PCI_DEVICE(0x6549, 0x1200),
2349 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2350 	{ PCI_DEVICE(0x6549, 0x2200),
2351 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2352 	/* Creative X-Fi (CA0110-IBG) */
2353 	/* CTHDA chips */
2354 	{ PCI_DEVICE(0x1102, 0x0010),
2355 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2356 	{ PCI_DEVICE(0x1102, 0x0012),
2357 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2358 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2359 	/* the following entry conflicts with snd-ctxfi driver,
2360 	 * as ctxfi driver mutates from HD-audio to native mode with
2361 	 * a special command sequence.
2362 	 */
2363 	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2364 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2365 	  .class_mask = 0xffffff,
2366 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2367 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2368 #else
2369 	/* this entry seems still valid -- i.e. without emu20kx chip */
2370 	{ PCI_DEVICE(0x1102, 0x0009),
2371 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2372 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2373 #endif
2374 	/* CM8888 */
2375 	{ PCI_DEVICE(0x13f6, 0x5011),
2376 	  .driver_data = AZX_DRIVER_CMEDIA |
2377 	  AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
2378 	/* Vortex86MX */
2379 	{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2380 	/* VMware HDAudio */
2381 	{ PCI_DEVICE(0x15ad, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2382 	/* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2383 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2384 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2385 	  .class_mask = 0xffffff,
2386 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2387 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2388 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2389 	  .class_mask = 0xffffff,
2390 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2391 	{ 0, }
2392 };
2393 MODULE_DEVICE_TABLE(pci, azx_ids);
2394 
2395 /* pci_driver definition */
2396 static struct pci_driver azx_driver = {
2397 	.name = KBUILD_MODNAME,
2398 	.id_table = azx_ids,
2399 	.probe = azx_probe,
2400 	.remove = azx_remove,
2401 	.shutdown = azx_shutdown,
2402 	.driver = {
2403 		.pm = AZX_PM_OPS,
2404 	},
2405 };
2406 
2407 module_pci_driver(azx_driver);
2408