xref: /openbmc/linux/sound/pci/hda/hda_intel.c (revision 23c2b932)
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_KBL_H(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa2f0)
371 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
372 #define IS_SKL_PLUS(pci) (IS_SKL(pci) || IS_SKL_LP(pci) || IS_BXT(pci)) || \
373 			IS_KBL(pci) || IS_KBL_LP(pci) || IS_KBL_H(pci)
374 
375 static char *driver_short_names[] = {
376 	[AZX_DRIVER_ICH] = "HDA Intel",
377 	[AZX_DRIVER_PCH] = "HDA Intel PCH",
378 	[AZX_DRIVER_SCH] = "HDA Intel MID",
379 	[AZX_DRIVER_HDMI] = "HDA Intel HDMI",
380 	[AZX_DRIVER_ATI] = "HDA ATI SB",
381 	[AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
382 	[AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
383 	[AZX_DRIVER_VIA] = "HDA VIA VT82xx",
384 	[AZX_DRIVER_SIS] = "HDA SIS966",
385 	[AZX_DRIVER_ULI] = "HDA ULI M5461",
386 	[AZX_DRIVER_NVIDIA] = "HDA NVidia",
387 	[AZX_DRIVER_TERA] = "HDA Teradici",
388 	[AZX_DRIVER_CTX] = "HDA Creative",
389 	[AZX_DRIVER_CTHDA] = "HDA Creative",
390 	[AZX_DRIVER_CMEDIA] = "HDA C-Media",
391 	[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
392 };
393 
394 #ifdef CONFIG_X86
395 static void __mark_pages_wc(struct azx *chip, struct snd_dma_buffer *dmab, bool on)
396 {
397 	int pages;
398 
399 	if (azx_snoop(chip))
400 		return;
401 	if (!dmab || !dmab->area || !dmab->bytes)
402 		return;
403 
404 #ifdef CONFIG_SND_DMA_SGBUF
405 	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG) {
406 		struct snd_sg_buf *sgbuf = dmab->private_data;
407 		if (chip->driver_type == AZX_DRIVER_CMEDIA)
408 			return; /* deal with only CORB/RIRB buffers */
409 		if (on)
410 			set_pages_array_wc(sgbuf->page_table, sgbuf->pages);
411 		else
412 			set_pages_array_wb(sgbuf->page_table, sgbuf->pages);
413 		return;
414 	}
415 #endif
416 
417 	pages = (dmab->bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
418 	if (on)
419 		set_memory_wc((unsigned long)dmab->area, pages);
420 	else
421 		set_memory_wb((unsigned long)dmab->area, pages);
422 }
423 
424 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
425 				 bool on)
426 {
427 	__mark_pages_wc(chip, buf, on);
428 }
429 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
430 				   struct snd_pcm_substream *substream, bool on)
431 {
432 	if (azx_dev->wc_marked != on) {
433 		__mark_pages_wc(chip, snd_pcm_get_dma_buf(substream), on);
434 		azx_dev->wc_marked = on;
435 	}
436 }
437 #else
438 /* NOP for other archs */
439 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
440 				 bool on)
441 {
442 }
443 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
444 				   struct snd_pcm_substream *substream, bool on)
445 {
446 }
447 #endif
448 
449 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
450 
451 /*
452  * initialize the PCI registers
453  */
454 /* update bits in a PCI register byte */
455 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
456 			    unsigned char mask, unsigned char val)
457 {
458 	unsigned char data;
459 
460 	pci_read_config_byte(pci, reg, &data);
461 	data &= ~mask;
462 	data |= (val & mask);
463 	pci_write_config_byte(pci, reg, data);
464 }
465 
466 static void azx_init_pci(struct azx *chip)
467 {
468 	int snoop_type = azx_get_snoop_type(chip);
469 
470 	/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
471 	 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
472 	 * Ensuring these bits are 0 clears playback static on some HD Audio
473 	 * codecs.
474 	 * The PCI register TCSEL is defined in the Intel manuals.
475 	 */
476 	if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
477 		dev_dbg(chip->card->dev, "Clearing TCSEL\n");
478 		update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
479 	}
480 
481 	/* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
482 	 * we need to enable snoop.
483 	 */
484 	if (snoop_type == AZX_SNOOP_TYPE_ATI) {
485 		dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
486 			azx_snoop(chip));
487 		update_pci_byte(chip->pci,
488 				ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
489 				azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
490 	}
491 
492 	/* For NVIDIA HDA, enable snoop */
493 	if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
494 		dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
495 			azx_snoop(chip));
496 		update_pci_byte(chip->pci,
497 				NVIDIA_HDA_TRANSREG_ADDR,
498 				0x0f, NVIDIA_HDA_ENABLE_COHBITS);
499 		update_pci_byte(chip->pci,
500 				NVIDIA_HDA_ISTRM_COH,
501 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
502 		update_pci_byte(chip->pci,
503 				NVIDIA_HDA_OSTRM_COH,
504 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
505 	}
506 
507 	/* Enable SCH/PCH snoop if needed */
508 	if (snoop_type == AZX_SNOOP_TYPE_SCH) {
509 		unsigned short snoop;
510 		pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
511 		if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
512 		    (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
513 			snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
514 			if (!azx_snoop(chip))
515 				snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
516 			pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
517 			pci_read_config_word(chip->pci,
518 				INTEL_SCH_HDA_DEVC, &snoop);
519 		}
520 		dev_dbg(chip->card->dev, "SCH snoop: %s\n",
521 			(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
522 			"Disabled" : "Enabled");
523         }
524 }
525 
526 /*
527  * In BXT-P A0, HD-Audio DMA requests is later than expected,
528  * and makes an audio stream sensitive to system latencies when
529  * 24/32 bits are playing.
530  * Adjusting threshold of DMA fifo to force the DMA request
531  * sooner to improve latency tolerance at the expense of power.
532  */
533 static void bxt_reduce_dma_latency(struct azx *chip)
534 {
535 	u32 val;
536 
537 	val = azx_readl(chip, SKL_EM4L);
538 	val &= (0x3 << 20);
539 	azx_writel(chip, SKL_EM4L, val);
540 }
541 
542 static void hda_intel_init_chip(struct azx *chip, bool full_reset)
543 {
544 	struct hdac_bus *bus = azx_bus(chip);
545 	struct pci_dev *pci = chip->pci;
546 	u32 val;
547 
548 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
549 		snd_hdac_set_codec_wakeup(bus, true);
550 	if (IS_SKL_PLUS(pci)) {
551 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
552 		val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
553 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
554 	}
555 	azx_init_chip(chip, full_reset);
556 	if (IS_SKL_PLUS(pci)) {
557 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
558 		val = val | INTEL_HDA_CGCTL_MISCBDCGE;
559 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
560 	}
561 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
562 		snd_hdac_set_codec_wakeup(bus, false);
563 
564 	/* reduce dma latency to avoid noise */
565 	if (IS_BXT(pci))
566 		bxt_reduce_dma_latency(chip);
567 }
568 
569 /* calculate runtime delay from LPIB */
570 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
571 				   unsigned int pos)
572 {
573 	struct snd_pcm_substream *substream = azx_dev->core.substream;
574 	int stream = substream->stream;
575 	unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
576 	int delay;
577 
578 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
579 		delay = pos - lpib_pos;
580 	else
581 		delay = lpib_pos - pos;
582 	if (delay < 0) {
583 		if (delay >= azx_dev->core.delay_negative_threshold)
584 			delay = 0;
585 		else
586 			delay += azx_dev->core.bufsize;
587 	}
588 
589 	if (delay >= azx_dev->core.period_bytes) {
590 		dev_info(chip->card->dev,
591 			 "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
592 			 delay, azx_dev->core.period_bytes);
593 		delay = 0;
594 		chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
595 		chip->get_delay[stream] = NULL;
596 	}
597 
598 	return bytes_to_frames(substream->runtime, delay);
599 }
600 
601 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
602 
603 /* called from IRQ */
604 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
605 {
606 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
607 	int ok;
608 
609 	ok = azx_position_ok(chip, azx_dev);
610 	if (ok == 1) {
611 		azx_dev->irq_pending = 0;
612 		return ok;
613 	} else if (ok == 0) {
614 		/* bogus IRQ, process it later */
615 		azx_dev->irq_pending = 1;
616 		schedule_work(&hda->irq_pending_work);
617 	}
618 	return 0;
619 }
620 
621 /* Enable/disable i915 display power for the link */
622 static int azx_intel_link_power(struct azx *chip, bool enable)
623 {
624 	struct hdac_bus *bus = azx_bus(chip);
625 
626 	return snd_hdac_display_power(bus, enable);
627 }
628 
629 /*
630  * Check whether the current DMA position is acceptable for updating
631  * periods.  Returns non-zero if it's OK.
632  *
633  * Many HD-audio controllers appear pretty inaccurate about
634  * the update-IRQ timing.  The IRQ is issued before actually the
635  * data is processed.  So, we need to process it afterwords in a
636  * workqueue.
637  */
638 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
639 {
640 	struct snd_pcm_substream *substream = azx_dev->core.substream;
641 	int stream = substream->stream;
642 	u32 wallclk;
643 	unsigned int pos;
644 
645 	wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
646 	if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
647 		return -1;	/* bogus (too early) interrupt */
648 
649 	if (chip->get_position[stream])
650 		pos = chip->get_position[stream](chip, azx_dev);
651 	else { /* use the position buffer as default */
652 		pos = azx_get_pos_posbuf(chip, azx_dev);
653 		if (!pos || pos == (u32)-1) {
654 			dev_info(chip->card->dev,
655 				 "Invalid position buffer, using LPIB read method instead.\n");
656 			chip->get_position[stream] = azx_get_pos_lpib;
657 			if (chip->get_position[0] == azx_get_pos_lpib &&
658 			    chip->get_position[1] == azx_get_pos_lpib)
659 				azx_bus(chip)->use_posbuf = false;
660 			pos = azx_get_pos_lpib(chip, azx_dev);
661 			chip->get_delay[stream] = NULL;
662 		} else {
663 			chip->get_position[stream] = azx_get_pos_posbuf;
664 			if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
665 				chip->get_delay[stream] = azx_get_delay_from_lpib;
666 		}
667 	}
668 
669 	if (pos >= azx_dev->core.bufsize)
670 		pos = 0;
671 
672 	if (WARN_ONCE(!azx_dev->core.period_bytes,
673 		      "hda-intel: zero azx_dev->period_bytes"))
674 		return -1; /* this shouldn't happen! */
675 	if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
676 	    pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
677 		/* NG - it's below the first next period boundary */
678 		return chip->bdl_pos_adj ? 0 : -1;
679 	azx_dev->core.start_wallclk += wallclk;
680 	return 1; /* OK, it's fine */
681 }
682 
683 /*
684  * The work for pending PCM period updates.
685  */
686 static void azx_irq_pending_work(struct work_struct *work)
687 {
688 	struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
689 	struct azx *chip = &hda->chip;
690 	struct hdac_bus *bus = azx_bus(chip);
691 	struct hdac_stream *s;
692 	int pending, ok;
693 
694 	if (!hda->irq_pending_warned) {
695 		dev_info(chip->card->dev,
696 			 "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
697 			 chip->card->number);
698 		hda->irq_pending_warned = 1;
699 	}
700 
701 	for (;;) {
702 		pending = 0;
703 		spin_lock_irq(&bus->reg_lock);
704 		list_for_each_entry(s, &bus->stream_list, list) {
705 			struct azx_dev *azx_dev = stream_to_azx_dev(s);
706 			if (!azx_dev->irq_pending ||
707 			    !s->substream ||
708 			    !s->running)
709 				continue;
710 			ok = azx_position_ok(chip, azx_dev);
711 			if (ok > 0) {
712 				azx_dev->irq_pending = 0;
713 				spin_unlock(&bus->reg_lock);
714 				snd_pcm_period_elapsed(s->substream);
715 				spin_lock(&bus->reg_lock);
716 			} else if (ok < 0) {
717 				pending = 0;	/* too early */
718 			} else
719 				pending++;
720 		}
721 		spin_unlock_irq(&bus->reg_lock);
722 		if (!pending)
723 			return;
724 		msleep(1);
725 	}
726 }
727 
728 /* clear irq_pending flags and assure no on-going workq */
729 static void azx_clear_irq_pending(struct azx *chip)
730 {
731 	struct hdac_bus *bus = azx_bus(chip);
732 	struct hdac_stream *s;
733 
734 	spin_lock_irq(&bus->reg_lock);
735 	list_for_each_entry(s, &bus->stream_list, list) {
736 		struct azx_dev *azx_dev = stream_to_azx_dev(s);
737 		azx_dev->irq_pending = 0;
738 	}
739 	spin_unlock_irq(&bus->reg_lock);
740 }
741 
742 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
743 {
744 	struct hdac_bus *bus = azx_bus(chip);
745 
746 	if (request_irq(chip->pci->irq, azx_interrupt,
747 			chip->msi ? 0 : IRQF_SHARED,
748 			chip->card->irq_descr, chip)) {
749 		dev_err(chip->card->dev,
750 			"unable to grab IRQ %d, disabling device\n",
751 			chip->pci->irq);
752 		if (do_disconnect)
753 			snd_card_disconnect(chip->card);
754 		return -1;
755 	}
756 	bus->irq = chip->pci->irq;
757 	pci_intx(chip->pci, !chip->msi);
758 	return 0;
759 }
760 
761 /* get the current DMA position with correction on VIA chips */
762 static unsigned int azx_via_get_position(struct azx *chip,
763 					 struct azx_dev *azx_dev)
764 {
765 	unsigned int link_pos, mini_pos, bound_pos;
766 	unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
767 	unsigned int fifo_size;
768 
769 	link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
770 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
771 		/* Playback, no problem using link position */
772 		return link_pos;
773 	}
774 
775 	/* Capture */
776 	/* For new chipset,
777 	 * use mod to get the DMA position just like old chipset
778 	 */
779 	mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
780 	mod_dma_pos %= azx_dev->core.period_bytes;
781 
782 	/* azx_dev->fifo_size can't get FIFO size of in stream.
783 	 * Get from base address + offset.
784 	 */
785 	fifo_size = readw(azx_bus(chip)->remap_addr +
786 			  VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
787 
788 	if (azx_dev->insufficient) {
789 		/* Link position never gather than FIFO size */
790 		if (link_pos <= fifo_size)
791 			return 0;
792 
793 		azx_dev->insufficient = 0;
794 	}
795 
796 	if (link_pos <= fifo_size)
797 		mini_pos = azx_dev->core.bufsize + link_pos - fifo_size;
798 	else
799 		mini_pos = link_pos - fifo_size;
800 
801 	/* Find nearest previous boudary */
802 	mod_mini_pos = mini_pos % azx_dev->core.period_bytes;
803 	mod_link_pos = link_pos % azx_dev->core.period_bytes;
804 	if (mod_link_pos >= fifo_size)
805 		bound_pos = link_pos - mod_link_pos;
806 	else if (mod_dma_pos >= mod_mini_pos)
807 		bound_pos = mini_pos - mod_mini_pos;
808 	else {
809 		bound_pos = mini_pos - mod_mini_pos + azx_dev->core.period_bytes;
810 		if (bound_pos >= azx_dev->core.bufsize)
811 			bound_pos = 0;
812 	}
813 
814 	/* Calculate real DMA position we want */
815 	return bound_pos + mod_dma_pos;
816 }
817 
818 #ifdef CONFIG_PM
819 static DEFINE_MUTEX(card_list_lock);
820 static LIST_HEAD(card_list);
821 
822 static void azx_add_card_list(struct azx *chip)
823 {
824 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
825 	mutex_lock(&card_list_lock);
826 	list_add(&hda->list, &card_list);
827 	mutex_unlock(&card_list_lock);
828 }
829 
830 static void azx_del_card_list(struct azx *chip)
831 {
832 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
833 	mutex_lock(&card_list_lock);
834 	list_del_init(&hda->list);
835 	mutex_unlock(&card_list_lock);
836 }
837 
838 /* trigger power-save check at writing parameter */
839 static int param_set_xint(const char *val, const struct kernel_param *kp)
840 {
841 	struct hda_intel *hda;
842 	struct azx *chip;
843 	int prev = power_save;
844 	int ret = param_set_int(val, kp);
845 
846 	if (ret || prev == power_save)
847 		return ret;
848 
849 	mutex_lock(&card_list_lock);
850 	list_for_each_entry(hda, &card_list, list) {
851 		chip = &hda->chip;
852 		if (!hda->probe_continued || chip->disabled)
853 			continue;
854 		snd_hda_set_power_save(&chip->bus, power_save * 1000);
855 	}
856 	mutex_unlock(&card_list_lock);
857 	return 0;
858 }
859 #else
860 #define azx_add_card_list(chip) /* NOP */
861 #define azx_del_card_list(chip) /* NOP */
862 #endif /* CONFIG_PM */
863 
864 #if defined(CONFIG_PM_SLEEP) || defined(SUPPORT_VGA_SWITCHEROO)
865 /*
866  * power management
867  */
868 static int azx_suspend(struct device *dev)
869 {
870 	struct snd_card *card = dev_get_drvdata(dev);
871 	struct azx *chip;
872 	struct hda_intel *hda;
873 	struct hdac_bus *bus;
874 
875 	if (!card)
876 		return 0;
877 
878 	chip = card->private_data;
879 	hda = container_of(chip, struct hda_intel, chip);
880 	if (chip->disabled || hda->init_failed || !chip->running)
881 		return 0;
882 
883 	bus = azx_bus(chip);
884 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
885 	azx_clear_irq_pending(chip);
886 	azx_stop_chip(chip);
887 	azx_enter_link_reset(chip);
888 	if (bus->irq >= 0) {
889 		free_irq(bus->irq, chip);
890 		bus->irq = -1;
891 	}
892 
893 	if (chip->msi)
894 		pci_disable_msi(chip->pci);
895 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
896 		&& hda->need_i915_power)
897 		snd_hdac_display_power(bus, false);
898 
899 	trace_azx_suspend(chip);
900 	return 0;
901 }
902 
903 static int azx_resume(struct device *dev)
904 {
905 	struct pci_dev *pci = to_pci_dev(dev);
906 	struct snd_card *card = dev_get_drvdata(dev);
907 	struct azx *chip;
908 	struct hda_intel *hda;
909 
910 	if (!card)
911 		return 0;
912 
913 	chip = card->private_data;
914 	hda = container_of(chip, struct hda_intel, chip);
915 	if (chip->disabled || hda->init_failed || !chip->running)
916 		return 0;
917 
918 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
919 		&& hda->need_i915_power) {
920 		snd_hdac_display_power(azx_bus(chip), true);
921 		snd_hdac_i915_set_bclk(azx_bus(chip));
922 	}
923 	if (chip->msi)
924 		if (pci_enable_msi(pci) < 0)
925 			chip->msi = 0;
926 	if (azx_acquire_irq(chip, 1) < 0)
927 		return -EIO;
928 	azx_init_pci(chip);
929 
930 	hda_intel_init_chip(chip, true);
931 
932 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
933 
934 	trace_azx_resume(chip);
935 	return 0;
936 }
937 #endif /* CONFIG_PM_SLEEP || SUPPORT_VGA_SWITCHEROO */
938 
939 #ifdef CONFIG_PM_SLEEP
940 /* put codec down to D3 at hibernation for Intel SKL+;
941  * otherwise BIOS may still access the codec and screw up the driver
942  */
943 static int azx_freeze_noirq(struct device *dev)
944 {
945 	struct pci_dev *pci = to_pci_dev(dev);
946 
947 	if (IS_SKL_PLUS(pci))
948 		pci_set_power_state(pci, PCI_D3hot);
949 
950 	return 0;
951 }
952 
953 static int azx_thaw_noirq(struct device *dev)
954 {
955 	struct pci_dev *pci = to_pci_dev(dev);
956 
957 	if (IS_SKL_PLUS(pci))
958 		pci_set_power_state(pci, PCI_D0);
959 
960 	return 0;
961 }
962 #endif /* CONFIG_PM_SLEEP */
963 
964 #ifdef CONFIG_PM
965 static int azx_runtime_suspend(struct device *dev)
966 {
967 	struct snd_card *card = dev_get_drvdata(dev);
968 	struct azx *chip;
969 	struct hda_intel *hda;
970 
971 	if (!card)
972 		return 0;
973 
974 	chip = card->private_data;
975 	hda = container_of(chip, struct hda_intel, chip);
976 	if (chip->disabled || hda->init_failed)
977 		return 0;
978 
979 	if (!azx_has_pm_runtime(chip))
980 		return 0;
981 
982 	/* enable controller wake up event */
983 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
984 		  STATESTS_INT_MASK);
985 
986 	azx_stop_chip(chip);
987 	azx_enter_link_reset(chip);
988 	azx_clear_irq_pending(chip);
989 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
990 		&& hda->need_i915_power)
991 		snd_hdac_display_power(azx_bus(chip), false);
992 
993 	trace_azx_runtime_suspend(chip);
994 	return 0;
995 }
996 
997 static int azx_runtime_resume(struct device *dev)
998 {
999 	struct snd_card *card = dev_get_drvdata(dev);
1000 	struct azx *chip;
1001 	struct hda_intel *hda;
1002 	struct hdac_bus *bus;
1003 	struct hda_codec *codec;
1004 	int status;
1005 
1006 	if (!card)
1007 		return 0;
1008 
1009 	chip = card->private_data;
1010 	hda = container_of(chip, struct hda_intel, chip);
1011 	if (chip->disabled || hda->init_failed)
1012 		return 0;
1013 
1014 	if (!azx_has_pm_runtime(chip))
1015 		return 0;
1016 
1017 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1018 		bus = azx_bus(chip);
1019 		if (hda->need_i915_power) {
1020 			snd_hdac_display_power(bus, true);
1021 			snd_hdac_i915_set_bclk(bus);
1022 		} else {
1023 			/* toggle codec wakeup bit for STATESTS read */
1024 			snd_hdac_set_codec_wakeup(bus, true);
1025 			snd_hdac_set_codec_wakeup(bus, false);
1026 		}
1027 	}
1028 
1029 	/* Read STATESTS before controller reset */
1030 	status = azx_readw(chip, STATESTS);
1031 
1032 	azx_init_pci(chip);
1033 	hda_intel_init_chip(chip, true);
1034 
1035 	if (status) {
1036 		list_for_each_codec(codec, &chip->bus)
1037 			if (status & (1 << codec->addr))
1038 				schedule_delayed_work(&codec->jackpoll_work,
1039 						      codec->jackpoll_interval);
1040 	}
1041 
1042 	/* disable controller Wake Up event*/
1043 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
1044 			~STATESTS_INT_MASK);
1045 
1046 	trace_azx_runtime_resume(chip);
1047 	return 0;
1048 }
1049 
1050 static int azx_runtime_idle(struct device *dev)
1051 {
1052 	struct snd_card *card = dev_get_drvdata(dev);
1053 	struct azx *chip;
1054 	struct hda_intel *hda;
1055 
1056 	if (!card)
1057 		return 0;
1058 
1059 	chip = card->private_data;
1060 	hda = container_of(chip, struct hda_intel, chip);
1061 	if (chip->disabled || hda->init_failed)
1062 		return 0;
1063 
1064 	if (!power_save_controller || !azx_has_pm_runtime(chip) ||
1065 	    azx_bus(chip)->codec_powered || !chip->running)
1066 		return -EBUSY;
1067 
1068 	return 0;
1069 }
1070 
1071 static const struct dev_pm_ops azx_pm = {
1072 	SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
1073 #ifdef CONFIG_PM_SLEEP
1074 	.freeze_noirq = azx_freeze_noirq,
1075 	.thaw_noirq = azx_thaw_noirq,
1076 #endif
1077 	SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
1078 };
1079 
1080 #define AZX_PM_OPS	&azx_pm
1081 #else
1082 #define AZX_PM_OPS	NULL
1083 #endif /* CONFIG_PM */
1084 
1085 
1086 static int azx_probe_continue(struct azx *chip);
1087 
1088 #ifdef SUPPORT_VGA_SWITCHEROO
1089 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
1090 
1091 static void azx_vs_set_state(struct pci_dev *pci,
1092 			     enum vga_switcheroo_state state)
1093 {
1094 	struct snd_card *card = pci_get_drvdata(pci);
1095 	struct azx *chip = card->private_data;
1096 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1097 	bool disabled;
1098 
1099 	wait_for_completion(&hda->probe_wait);
1100 	if (hda->init_failed)
1101 		return;
1102 
1103 	disabled = (state == VGA_SWITCHEROO_OFF);
1104 	if (chip->disabled == disabled)
1105 		return;
1106 
1107 	if (!hda->probe_continued) {
1108 		chip->disabled = disabled;
1109 		if (!disabled) {
1110 			dev_info(chip->card->dev,
1111 				 "Start delayed initialization\n");
1112 			if (azx_probe_continue(chip) < 0) {
1113 				dev_err(chip->card->dev, "initialization error\n");
1114 				hda->init_failed = true;
1115 			}
1116 		}
1117 	} else {
1118 		dev_info(chip->card->dev, "%s via vga_switcheroo\n",
1119 			 disabled ? "Disabling" : "Enabling");
1120 		if (disabled) {
1121 			pm_runtime_put_sync_suspend(card->dev);
1122 			azx_suspend(card->dev);
1123 			/* when we get suspended by vga_switcheroo we end up in D3cold,
1124 			 * however we have no ACPI handle, so pci/acpi can't put us there,
1125 			 * put ourselves there */
1126 			pci->current_state = PCI_D3cold;
1127 			chip->disabled = true;
1128 			if (snd_hda_lock_devices(&chip->bus))
1129 				dev_warn(chip->card->dev,
1130 					 "Cannot lock devices!\n");
1131 		} else {
1132 			snd_hda_unlock_devices(&chip->bus);
1133 			pm_runtime_get_noresume(card->dev);
1134 			chip->disabled = false;
1135 			azx_resume(card->dev);
1136 		}
1137 	}
1138 }
1139 
1140 static bool azx_vs_can_switch(struct pci_dev *pci)
1141 {
1142 	struct snd_card *card = pci_get_drvdata(pci);
1143 	struct azx *chip = card->private_data;
1144 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1145 
1146 	wait_for_completion(&hda->probe_wait);
1147 	if (hda->init_failed)
1148 		return false;
1149 	if (chip->disabled || !hda->probe_continued)
1150 		return true;
1151 	if (snd_hda_lock_devices(&chip->bus))
1152 		return false;
1153 	snd_hda_unlock_devices(&chip->bus);
1154 	return true;
1155 }
1156 
1157 static void init_vga_switcheroo(struct azx *chip)
1158 {
1159 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1160 	struct pci_dev *p = get_bound_vga(chip->pci);
1161 	if (p) {
1162 		dev_info(chip->card->dev,
1163 			 "Handle vga_switcheroo audio client\n");
1164 		hda->use_vga_switcheroo = 1;
1165 		pci_dev_put(p);
1166 	}
1167 }
1168 
1169 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1170 	.set_gpu_state = azx_vs_set_state,
1171 	.can_switch = azx_vs_can_switch,
1172 };
1173 
1174 static int register_vga_switcheroo(struct azx *chip)
1175 {
1176 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1177 	int err;
1178 
1179 	if (!hda->use_vga_switcheroo)
1180 		return 0;
1181 	/* FIXME: currently only handling DIS controller
1182 	 * is there any machine with two switchable HDMI audio controllers?
1183 	 */
1184 	err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops,
1185 						   VGA_SWITCHEROO_DIS);
1186 	if (err < 0)
1187 		return err;
1188 	hda->vga_switcheroo_registered = 1;
1189 
1190 	/* register as an optimus hdmi audio power domain */
1191 	vga_switcheroo_init_domain_pm_optimus_hdmi_audio(chip->card->dev,
1192 							 &hda->hdmi_pm_domain);
1193 	return 0;
1194 }
1195 #else
1196 #define init_vga_switcheroo(chip)		/* NOP */
1197 #define register_vga_switcheroo(chip)		0
1198 #define check_hdmi_disabled(pci)	false
1199 #endif /* SUPPORT_VGA_SWITCHER */
1200 
1201 /*
1202  * destructor
1203  */
1204 static int azx_free(struct azx *chip)
1205 {
1206 	struct pci_dev *pci = chip->pci;
1207 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1208 	struct hdac_bus *bus = azx_bus(chip);
1209 
1210 	if (azx_has_pm_runtime(chip) && chip->running)
1211 		pm_runtime_get_noresume(&pci->dev);
1212 
1213 	azx_del_card_list(chip);
1214 
1215 	hda->init_failed = 1; /* to be sure */
1216 	complete_all(&hda->probe_wait);
1217 
1218 	if (use_vga_switcheroo(hda)) {
1219 		if (chip->disabled && hda->probe_continued)
1220 			snd_hda_unlock_devices(&chip->bus);
1221 		if (hda->vga_switcheroo_registered) {
1222 			vga_switcheroo_unregister_client(chip->pci);
1223 			vga_switcheroo_fini_domain_pm_ops(chip->card->dev);
1224 		}
1225 	}
1226 
1227 	if (bus->chip_init) {
1228 		azx_clear_irq_pending(chip);
1229 		azx_stop_all_streams(chip);
1230 		azx_stop_chip(chip);
1231 	}
1232 
1233 	if (bus->irq >= 0)
1234 		free_irq(bus->irq, (void*)chip);
1235 	if (chip->msi)
1236 		pci_disable_msi(chip->pci);
1237 	iounmap(bus->remap_addr);
1238 
1239 	azx_free_stream_pages(chip);
1240 	azx_free_streams(chip);
1241 	snd_hdac_bus_exit(bus);
1242 
1243 	if (chip->region_requested)
1244 		pci_release_regions(chip->pci);
1245 
1246 	pci_disable_device(chip->pci);
1247 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1248 	release_firmware(chip->fw);
1249 #endif
1250 
1251 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1252 		if (hda->need_i915_power)
1253 			snd_hdac_display_power(bus, false);
1254 		snd_hdac_i915_exit(bus);
1255 	}
1256 	kfree(hda);
1257 
1258 	return 0;
1259 }
1260 
1261 static int azx_dev_disconnect(struct snd_device *device)
1262 {
1263 	struct azx *chip = device->device_data;
1264 
1265 	chip->bus.shutdown = 1;
1266 	return 0;
1267 }
1268 
1269 static int azx_dev_free(struct snd_device *device)
1270 {
1271 	return azx_free(device->device_data);
1272 }
1273 
1274 #ifdef SUPPORT_VGA_SWITCHEROO
1275 /*
1276  * Check of disabled HDMI controller by vga_switcheroo
1277  */
1278 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1279 {
1280 	struct pci_dev *p;
1281 
1282 	/* check only discrete GPU */
1283 	switch (pci->vendor) {
1284 	case PCI_VENDOR_ID_ATI:
1285 	case PCI_VENDOR_ID_AMD:
1286 	case PCI_VENDOR_ID_NVIDIA:
1287 		if (pci->devfn == 1) {
1288 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1289 							pci->bus->number, 0);
1290 			if (p) {
1291 				if ((p->class >> 8) == PCI_CLASS_DISPLAY_VGA)
1292 					return p;
1293 				pci_dev_put(p);
1294 			}
1295 		}
1296 		break;
1297 	}
1298 	return NULL;
1299 }
1300 
1301 static bool check_hdmi_disabled(struct pci_dev *pci)
1302 {
1303 	bool vga_inactive = false;
1304 	struct pci_dev *p = get_bound_vga(pci);
1305 
1306 	if (p) {
1307 		if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1308 			vga_inactive = true;
1309 		pci_dev_put(p);
1310 	}
1311 	return vga_inactive;
1312 }
1313 #endif /* SUPPORT_VGA_SWITCHEROO */
1314 
1315 /*
1316  * white/black-listing for position_fix
1317  */
1318 static struct snd_pci_quirk position_fix_list[] = {
1319 	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1320 	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1321 	SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1322 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1323 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1324 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1325 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1326 	SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1327 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1328 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1329 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1330 	SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1331 	SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1332 	SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1333 	{}
1334 };
1335 
1336 static int check_position_fix(struct azx *chip, int fix)
1337 {
1338 	const struct snd_pci_quirk *q;
1339 
1340 	switch (fix) {
1341 	case POS_FIX_AUTO:
1342 	case POS_FIX_LPIB:
1343 	case POS_FIX_POSBUF:
1344 	case POS_FIX_VIACOMBO:
1345 	case POS_FIX_COMBO:
1346 		return fix;
1347 	}
1348 
1349 	q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1350 	if (q) {
1351 		dev_info(chip->card->dev,
1352 			 "position_fix set to %d for device %04x:%04x\n",
1353 			 q->value, q->subvendor, q->subdevice);
1354 		return q->value;
1355 	}
1356 
1357 	/* Check VIA/ATI HD Audio Controller exist */
1358 	if (chip->driver_type == AZX_DRIVER_VIA) {
1359 		dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1360 		return POS_FIX_VIACOMBO;
1361 	}
1362 	if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1363 		dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1364 		return POS_FIX_LPIB;
1365 	}
1366 	return POS_FIX_AUTO;
1367 }
1368 
1369 static void assign_position_fix(struct azx *chip, int fix)
1370 {
1371 	static azx_get_pos_callback_t callbacks[] = {
1372 		[POS_FIX_AUTO] = NULL,
1373 		[POS_FIX_LPIB] = azx_get_pos_lpib,
1374 		[POS_FIX_POSBUF] = azx_get_pos_posbuf,
1375 		[POS_FIX_VIACOMBO] = azx_via_get_position,
1376 		[POS_FIX_COMBO] = azx_get_pos_lpib,
1377 	};
1378 
1379 	chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1380 
1381 	/* combo mode uses LPIB only for playback */
1382 	if (fix == POS_FIX_COMBO)
1383 		chip->get_position[1] = NULL;
1384 
1385 	if (fix == POS_FIX_POSBUF &&
1386 	    (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1387 		chip->get_delay[0] = chip->get_delay[1] =
1388 			azx_get_delay_from_lpib;
1389 	}
1390 
1391 }
1392 
1393 /*
1394  * black-lists for probe_mask
1395  */
1396 static struct snd_pci_quirk probe_mask_list[] = {
1397 	/* Thinkpad often breaks the controller communication when accessing
1398 	 * to the non-working (or non-existing) modem codec slot.
1399 	 */
1400 	SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1401 	SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1402 	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1403 	/* broken BIOS */
1404 	SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1405 	/* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1406 	SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1407 	/* forced codec slots */
1408 	SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1409 	SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1410 	/* WinFast VP200 H (Teradici) user reported broken communication */
1411 	SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1412 	{}
1413 };
1414 
1415 #define AZX_FORCE_CODEC_MASK	0x100
1416 
1417 static void check_probe_mask(struct azx *chip, int dev)
1418 {
1419 	const struct snd_pci_quirk *q;
1420 
1421 	chip->codec_probe_mask = probe_mask[dev];
1422 	if (chip->codec_probe_mask == -1) {
1423 		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1424 		if (q) {
1425 			dev_info(chip->card->dev,
1426 				 "probe_mask set to 0x%x for device %04x:%04x\n",
1427 				 q->value, q->subvendor, q->subdevice);
1428 			chip->codec_probe_mask = q->value;
1429 		}
1430 	}
1431 
1432 	/* check forced option */
1433 	if (chip->codec_probe_mask != -1 &&
1434 	    (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1435 		azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
1436 		dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1437 			 (int)azx_bus(chip)->codec_mask);
1438 	}
1439 }
1440 
1441 /*
1442  * white/black-list for enable_msi
1443  */
1444 static struct snd_pci_quirk msi_black_list[] = {
1445 	SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1446 	SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1447 	SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1448 	SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1449 	SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1450 	SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1451 	SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1452 	SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1453 	SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1454 	SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1455 	{}
1456 };
1457 
1458 static void check_msi(struct azx *chip)
1459 {
1460 	const struct snd_pci_quirk *q;
1461 
1462 	if (enable_msi >= 0) {
1463 		chip->msi = !!enable_msi;
1464 		return;
1465 	}
1466 	chip->msi = 1;	/* enable MSI as default */
1467 	q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
1468 	if (q) {
1469 		dev_info(chip->card->dev,
1470 			 "msi for device %04x:%04x set to %d\n",
1471 			 q->subvendor, q->subdevice, q->value);
1472 		chip->msi = q->value;
1473 		return;
1474 	}
1475 
1476 	/* NVidia chipsets seem to cause troubles with MSI */
1477 	if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1478 		dev_info(chip->card->dev, "Disabling MSI\n");
1479 		chip->msi = 0;
1480 	}
1481 }
1482 
1483 /* check the snoop mode availability */
1484 static void azx_check_snoop_available(struct azx *chip)
1485 {
1486 	int snoop = hda_snoop;
1487 
1488 	if (snoop >= 0) {
1489 		dev_info(chip->card->dev, "Force to %s mode by module option\n",
1490 			 snoop ? "snoop" : "non-snoop");
1491 		chip->snoop = snoop;
1492 		return;
1493 	}
1494 
1495 	snoop = true;
1496 	if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
1497 	    chip->driver_type == AZX_DRIVER_VIA) {
1498 		/* force to non-snoop mode for a new VIA controller
1499 		 * when BIOS is set
1500 		 */
1501 		u8 val;
1502 		pci_read_config_byte(chip->pci, 0x42, &val);
1503 		if (!(val & 0x80) && chip->pci->revision == 0x30)
1504 			snoop = false;
1505 	}
1506 
1507 	if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
1508 		snoop = false;
1509 
1510 	chip->snoop = snoop;
1511 	if (!snoop)
1512 		dev_info(chip->card->dev, "Force to non-snoop mode\n");
1513 }
1514 
1515 static void azx_probe_work(struct work_struct *work)
1516 {
1517 	struct hda_intel *hda = container_of(work, struct hda_intel, probe_work);
1518 	azx_probe_continue(&hda->chip);
1519 }
1520 
1521 static int default_bdl_pos_adj(struct azx *chip)
1522 {
1523 	/* some exceptions: Atoms seem problematic with value 1 */
1524 	if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
1525 		switch (chip->pci->device) {
1526 		case 0x0f04: /* Baytrail */
1527 		case 0x2284: /* Braswell */
1528 			return 32;
1529 		}
1530 	}
1531 
1532 	switch (chip->driver_type) {
1533 	case AZX_DRIVER_ICH:
1534 	case AZX_DRIVER_PCH:
1535 		return 1;
1536 	default:
1537 		return 32;
1538 	}
1539 }
1540 
1541 /*
1542  * constructor
1543  */
1544 static const struct hdac_io_ops pci_hda_io_ops;
1545 static const struct hda_controller_ops pci_hda_ops;
1546 
1547 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1548 		      int dev, unsigned int driver_caps,
1549 		      struct azx **rchip)
1550 {
1551 	static struct snd_device_ops ops = {
1552 		.dev_disconnect = azx_dev_disconnect,
1553 		.dev_free = azx_dev_free,
1554 	};
1555 	struct hda_intel *hda;
1556 	struct azx *chip;
1557 	int err;
1558 
1559 	*rchip = NULL;
1560 
1561 	err = pci_enable_device(pci);
1562 	if (err < 0)
1563 		return err;
1564 
1565 	hda = kzalloc(sizeof(*hda), GFP_KERNEL);
1566 	if (!hda) {
1567 		pci_disable_device(pci);
1568 		return -ENOMEM;
1569 	}
1570 
1571 	chip = &hda->chip;
1572 	mutex_init(&chip->open_mutex);
1573 	chip->card = card;
1574 	chip->pci = pci;
1575 	chip->ops = &pci_hda_ops;
1576 	chip->driver_caps = driver_caps;
1577 	chip->driver_type = driver_caps & 0xff;
1578 	check_msi(chip);
1579 	chip->dev_index = dev;
1580 	chip->jackpoll_ms = jackpoll_ms;
1581 	INIT_LIST_HEAD(&chip->pcm_list);
1582 	INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1583 	INIT_LIST_HEAD(&hda->list);
1584 	init_vga_switcheroo(chip);
1585 	init_completion(&hda->probe_wait);
1586 
1587 	assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1588 
1589 	check_probe_mask(chip, dev);
1590 
1591 	chip->single_cmd = single_cmd;
1592 	azx_check_snoop_available(chip);
1593 
1594 	if (bdl_pos_adj[dev] < 0)
1595 		chip->bdl_pos_adj = default_bdl_pos_adj(chip);
1596 	else
1597 		chip->bdl_pos_adj = bdl_pos_adj[dev];
1598 
1599 	err = azx_bus_init(chip, model[dev], &pci_hda_io_ops);
1600 	if (err < 0) {
1601 		kfree(hda);
1602 		pci_disable_device(pci);
1603 		return err;
1604 	}
1605 
1606 	if (chip->driver_type == AZX_DRIVER_NVIDIA) {
1607 		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
1608 		chip->bus.needs_damn_long_delay = 1;
1609 	}
1610 
1611 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1612 	if (err < 0) {
1613 		dev_err(card->dev, "Error creating device [card]!\n");
1614 		azx_free(chip);
1615 		return err;
1616 	}
1617 
1618 	/* continue probing in work context as may trigger request module */
1619 	INIT_WORK(&hda->probe_work, azx_probe_work);
1620 
1621 	*rchip = chip;
1622 
1623 	return 0;
1624 }
1625 
1626 static int azx_first_init(struct azx *chip)
1627 {
1628 	int dev = chip->dev_index;
1629 	struct pci_dev *pci = chip->pci;
1630 	struct snd_card *card = chip->card;
1631 	struct hdac_bus *bus = azx_bus(chip);
1632 	int err;
1633 	unsigned short gcap;
1634 	unsigned int dma_bits = 64;
1635 
1636 #if BITS_PER_LONG != 64
1637 	/* Fix up base address on ULI M5461 */
1638 	if (chip->driver_type == AZX_DRIVER_ULI) {
1639 		u16 tmp3;
1640 		pci_read_config_word(pci, 0x40, &tmp3);
1641 		pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1642 		pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1643 	}
1644 #endif
1645 
1646 	err = pci_request_regions(pci, "ICH HD audio");
1647 	if (err < 0)
1648 		return err;
1649 	chip->region_requested = 1;
1650 
1651 	bus->addr = pci_resource_start(pci, 0);
1652 	bus->remap_addr = pci_ioremap_bar(pci, 0);
1653 	if (bus->remap_addr == NULL) {
1654 		dev_err(card->dev, "ioremap error\n");
1655 		return -ENXIO;
1656 	}
1657 
1658 	if (chip->msi) {
1659 		if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
1660 			dev_dbg(card->dev, "Disabling 64bit MSI\n");
1661 			pci->no_64bit_msi = true;
1662 		}
1663 		if (pci_enable_msi(pci) < 0)
1664 			chip->msi = 0;
1665 	}
1666 
1667 	if (azx_acquire_irq(chip, 0) < 0)
1668 		return -EBUSY;
1669 
1670 	pci_set_master(pci);
1671 	synchronize_irq(bus->irq);
1672 
1673 	gcap = azx_readw(chip, GCAP);
1674 	dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1675 
1676 	/* AMD devices support 40 or 48bit DMA, take the safe one */
1677 	if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
1678 		dma_bits = 40;
1679 
1680 	/* disable SB600 64bit support for safety */
1681 	if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1682 		struct pci_dev *p_smbus;
1683 		dma_bits = 40;
1684 		p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1685 					 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1686 					 NULL);
1687 		if (p_smbus) {
1688 			if (p_smbus->revision < 0x30)
1689 				gcap &= ~AZX_GCAP_64OK;
1690 			pci_dev_put(p_smbus);
1691 		}
1692 	}
1693 
1694 	/* disable 64bit DMA address on some devices */
1695 	if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1696 		dev_dbg(card->dev, "Disabling 64bit DMA\n");
1697 		gcap &= ~AZX_GCAP_64OK;
1698 	}
1699 
1700 	/* disable buffer size rounding to 128-byte multiples if supported */
1701 	if (align_buffer_size >= 0)
1702 		chip->align_buffer_size = !!align_buffer_size;
1703 	else {
1704 		if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
1705 			chip->align_buffer_size = 0;
1706 		else
1707 			chip->align_buffer_size = 1;
1708 	}
1709 
1710 	/* allow 64bit DMA address if supported by H/W */
1711 	if (!(gcap & AZX_GCAP_64OK))
1712 		dma_bits = 32;
1713 	if (!dma_set_mask(&pci->dev, DMA_BIT_MASK(dma_bits))) {
1714 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(dma_bits));
1715 	} else {
1716 		dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
1717 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32));
1718 	}
1719 
1720 	/* read number of streams from GCAP register instead of using
1721 	 * hardcoded value
1722 	 */
1723 	chip->capture_streams = (gcap >> 8) & 0x0f;
1724 	chip->playback_streams = (gcap >> 12) & 0x0f;
1725 	if (!chip->playback_streams && !chip->capture_streams) {
1726 		/* gcap didn't give any info, switching to old method */
1727 
1728 		switch (chip->driver_type) {
1729 		case AZX_DRIVER_ULI:
1730 			chip->playback_streams = ULI_NUM_PLAYBACK;
1731 			chip->capture_streams = ULI_NUM_CAPTURE;
1732 			break;
1733 		case AZX_DRIVER_ATIHDMI:
1734 		case AZX_DRIVER_ATIHDMI_NS:
1735 			chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1736 			chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1737 			break;
1738 		case AZX_DRIVER_GENERIC:
1739 		default:
1740 			chip->playback_streams = ICH6_NUM_PLAYBACK;
1741 			chip->capture_streams = ICH6_NUM_CAPTURE;
1742 			break;
1743 		}
1744 	}
1745 	chip->capture_index_offset = 0;
1746 	chip->playback_index_offset = chip->capture_streams;
1747 	chip->num_streams = chip->playback_streams + chip->capture_streams;
1748 
1749 	/* initialize streams */
1750 	err = azx_init_streams(chip);
1751 	if (err < 0)
1752 		return err;
1753 
1754 	err = azx_alloc_stream_pages(chip);
1755 	if (err < 0)
1756 		return err;
1757 
1758 	/* initialize chip */
1759 	azx_init_pci(chip);
1760 
1761 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
1762 		snd_hdac_i915_set_bclk(bus);
1763 
1764 	hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
1765 
1766 	/* codec detection */
1767 	if (!azx_bus(chip)->codec_mask) {
1768 		dev_err(card->dev, "no codecs found!\n");
1769 		return -ENODEV;
1770 	}
1771 
1772 	strcpy(card->driver, "HDA-Intel");
1773 	strlcpy(card->shortname, driver_short_names[chip->driver_type],
1774 		sizeof(card->shortname));
1775 	snprintf(card->longname, sizeof(card->longname),
1776 		 "%s at 0x%lx irq %i",
1777 		 card->shortname, bus->addr, bus->irq);
1778 
1779 	return 0;
1780 }
1781 
1782 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1783 /* callback from request_firmware_nowait() */
1784 static void azx_firmware_cb(const struct firmware *fw, void *context)
1785 {
1786 	struct snd_card *card = context;
1787 	struct azx *chip = card->private_data;
1788 	struct pci_dev *pci = chip->pci;
1789 
1790 	if (!fw) {
1791 		dev_err(card->dev, "Cannot load firmware, aborting\n");
1792 		goto error;
1793 	}
1794 
1795 	chip->fw = fw;
1796 	if (!chip->disabled) {
1797 		/* continue probing */
1798 		if (azx_probe_continue(chip))
1799 			goto error;
1800 	}
1801 	return; /* OK */
1802 
1803  error:
1804 	snd_card_free(card);
1805 	pci_set_drvdata(pci, NULL);
1806 }
1807 #endif
1808 
1809 /*
1810  * HDA controller ops.
1811  */
1812 
1813 /* PCI register access. */
1814 static void pci_azx_writel(u32 value, u32 __iomem *addr)
1815 {
1816 	writel(value, addr);
1817 }
1818 
1819 static u32 pci_azx_readl(u32 __iomem *addr)
1820 {
1821 	return readl(addr);
1822 }
1823 
1824 static void pci_azx_writew(u16 value, u16 __iomem *addr)
1825 {
1826 	writew(value, addr);
1827 }
1828 
1829 static u16 pci_azx_readw(u16 __iomem *addr)
1830 {
1831 	return readw(addr);
1832 }
1833 
1834 static void pci_azx_writeb(u8 value, u8 __iomem *addr)
1835 {
1836 	writeb(value, addr);
1837 }
1838 
1839 static u8 pci_azx_readb(u8 __iomem *addr)
1840 {
1841 	return readb(addr);
1842 }
1843 
1844 static int disable_msi_reset_irq(struct azx *chip)
1845 {
1846 	struct hdac_bus *bus = azx_bus(chip);
1847 	int err;
1848 
1849 	free_irq(bus->irq, chip);
1850 	bus->irq = -1;
1851 	pci_disable_msi(chip->pci);
1852 	chip->msi = 0;
1853 	err = azx_acquire_irq(chip, 1);
1854 	if (err < 0)
1855 		return err;
1856 
1857 	return 0;
1858 }
1859 
1860 /* DMA page allocation helpers.  */
1861 static int dma_alloc_pages(struct hdac_bus *bus,
1862 			   int type,
1863 			   size_t size,
1864 			   struct snd_dma_buffer *buf)
1865 {
1866 	struct azx *chip = bus_to_azx(bus);
1867 	int err;
1868 
1869 	err = snd_dma_alloc_pages(type,
1870 				  bus->dev,
1871 				  size, buf);
1872 	if (err < 0)
1873 		return err;
1874 	mark_pages_wc(chip, buf, true);
1875 	return 0;
1876 }
1877 
1878 static void dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf)
1879 {
1880 	struct azx *chip = bus_to_azx(bus);
1881 
1882 	mark_pages_wc(chip, buf, false);
1883 	snd_dma_free_pages(buf);
1884 }
1885 
1886 static int substream_alloc_pages(struct azx *chip,
1887 				 struct snd_pcm_substream *substream,
1888 				 size_t size)
1889 {
1890 	struct azx_dev *azx_dev = get_azx_dev(substream);
1891 	int ret;
1892 
1893 	mark_runtime_wc(chip, azx_dev, substream, false);
1894 	ret = snd_pcm_lib_malloc_pages(substream, size);
1895 	if (ret < 0)
1896 		return ret;
1897 	mark_runtime_wc(chip, azx_dev, substream, true);
1898 	return 0;
1899 }
1900 
1901 static int substream_free_pages(struct azx *chip,
1902 				struct snd_pcm_substream *substream)
1903 {
1904 	struct azx_dev *azx_dev = get_azx_dev(substream);
1905 	mark_runtime_wc(chip, azx_dev, substream, false);
1906 	return snd_pcm_lib_free_pages(substream);
1907 }
1908 
1909 static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
1910 			     struct vm_area_struct *area)
1911 {
1912 #ifdef CONFIG_X86
1913 	struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1914 	struct azx *chip = apcm->chip;
1915 	if (!azx_snoop(chip) && chip->driver_type != AZX_DRIVER_CMEDIA)
1916 		area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
1917 #endif
1918 }
1919 
1920 static const struct hdac_io_ops pci_hda_io_ops = {
1921 	.reg_writel = pci_azx_writel,
1922 	.reg_readl = pci_azx_readl,
1923 	.reg_writew = pci_azx_writew,
1924 	.reg_readw = pci_azx_readw,
1925 	.reg_writeb = pci_azx_writeb,
1926 	.reg_readb = pci_azx_readb,
1927 	.dma_alloc_pages = dma_alloc_pages,
1928 	.dma_free_pages = dma_free_pages,
1929 };
1930 
1931 static const struct hda_controller_ops pci_hda_ops = {
1932 	.disable_msi_reset_irq = disable_msi_reset_irq,
1933 	.substream_alloc_pages = substream_alloc_pages,
1934 	.substream_free_pages = substream_free_pages,
1935 	.pcm_mmap_prepare = pcm_mmap_prepare,
1936 	.position_check = azx_position_check,
1937 	.link_power = azx_intel_link_power,
1938 };
1939 
1940 static int azx_probe(struct pci_dev *pci,
1941 		     const struct pci_device_id *pci_id)
1942 {
1943 	static int dev;
1944 	struct snd_card *card;
1945 	struct hda_intel *hda;
1946 	struct azx *chip;
1947 	bool schedule_probe;
1948 	int err;
1949 
1950 	if (dev >= SNDRV_CARDS)
1951 		return -ENODEV;
1952 	if (!enable[dev]) {
1953 		dev++;
1954 		return -ENOENT;
1955 	}
1956 
1957 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1958 			   0, &card);
1959 	if (err < 0) {
1960 		dev_err(&pci->dev, "Error creating card!\n");
1961 		return err;
1962 	}
1963 
1964 	err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
1965 	if (err < 0)
1966 		goto out_free;
1967 	card->private_data = chip;
1968 	hda = container_of(chip, struct hda_intel, chip);
1969 
1970 	pci_set_drvdata(pci, card);
1971 
1972 	err = register_vga_switcheroo(chip);
1973 	if (err < 0) {
1974 		dev_err(card->dev, "Error registering vga_switcheroo client\n");
1975 		goto out_free;
1976 	}
1977 
1978 	if (check_hdmi_disabled(pci)) {
1979 		dev_info(card->dev, "VGA controller is disabled\n");
1980 		dev_info(card->dev, "Delaying initialization\n");
1981 		chip->disabled = true;
1982 	}
1983 
1984 	schedule_probe = !chip->disabled;
1985 
1986 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1987 	if (patch[dev] && *patch[dev]) {
1988 		dev_info(card->dev, "Applying patch firmware '%s'\n",
1989 			 patch[dev]);
1990 		err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
1991 					      &pci->dev, GFP_KERNEL, card,
1992 					      azx_firmware_cb);
1993 		if (err < 0)
1994 			goto out_free;
1995 		schedule_probe = false; /* continued in azx_firmware_cb() */
1996 	}
1997 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
1998 
1999 #ifndef CONFIG_SND_HDA_I915
2000 	if (CONTROLLER_IN_GPU(pci))
2001 		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
2002 #endif
2003 
2004 	if (schedule_probe)
2005 		schedule_work(&hda->probe_work);
2006 
2007 	dev++;
2008 	if (chip->disabled)
2009 		complete_all(&hda->probe_wait);
2010 	return 0;
2011 
2012 out_free:
2013 	snd_card_free(card);
2014 	return err;
2015 }
2016 
2017 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
2018 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
2019 	[AZX_DRIVER_NVIDIA] = 8,
2020 	[AZX_DRIVER_TERA] = 1,
2021 };
2022 
2023 static int azx_probe_continue(struct azx *chip)
2024 {
2025 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
2026 	struct hdac_bus *bus = azx_bus(chip);
2027 	struct pci_dev *pci = chip->pci;
2028 	int dev = chip->dev_index;
2029 	int err;
2030 
2031 	hda->probe_continued = 1;
2032 
2033 	/* Request display power well for the HDA controller or codec. For
2034 	 * Haswell/Broadwell, both the display HDA controller and codec need
2035 	 * this power. For other platforms, like Baytrail/Braswell, only the
2036 	 * display codec needs the power and it can be released after probe.
2037 	 */
2038 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
2039 		/* HSW/BDW controllers need this power */
2040 		if (CONTROLLER_IN_GPU(pci))
2041 			hda->need_i915_power = 1;
2042 
2043 		err = snd_hdac_i915_init(bus);
2044 		if (err < 0) {
2045 			/* if the controller is bound only with HDMI/DP
2046 			 * (for HSW and BDW), we need to abort the probe;
2047 			 * for other chips, still continue probing as other
2048 			 * codecs can be on the same link.
2049 			 */
2050 			if (CONTROLLER_IN_GPU(pci)) {
2051 				dev_err(chip->card->dev,
2052 					"HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
2053 				goto out_free;
2054 			} else
2055 				goto skip_i915;
2056 		}
2057 
2058 		err = snd_hdac_display_power(bus, true);
2059 		if (err < 0) {
2060 			dev_err(chip->card->dev,
2061 				"Cannot turn on display power on i915\n");
2062 			goto i915_power_fail;
2063 		}
2064 	}
2065 
2066  skip_i915:
2067 	err = azx_first_init(chip);
2068 	if (err < 0)
2069 		goto out_free;
2070 
2071 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2072 	chip->beep_mode = beep_mode[dev];
2073 #endif
2074 
2075 	/* create codec instances */
2076 	err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
2077 	if (err < 0)
2078 		goto out_free;
2079 
2080 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2081 	if (chip->fw) {
2082 		err = snd_hda_load_patch(&chip->bus, chip->fw->size,
2083 					 chip->fw->data);
2084 		if (err < 0)
2085 			goto out_free;
2086 #ifndef CONFIG_PM
2087 		release_firmware(chip->fw); /* no longer needed */
2088 		chip->fw = NULL;
2089 #endif
2090 	}
2091 #endif
2092 	if ((probe_only[dev] & 1) == 0) {
2093 		err = azx_codec_configure(chip);
2094 		if (err < 0)
2095 			goto out_free;
2096 	}
2097 
2098 	err = snd_card_register(chip->card);
2099 	if (err < 0)
2100 		goto out_free;
2101 
2102 	chip->running = 1;
2103 	azx_add_card_list(chip);
2104 	snd_hda_set_power_save(&chip->bus, power_save * 1000);
2105 	if (azx_has_pm_runtime(chip) || hda->use_vga_switcheroo)
2106 		pm_runtime_put_autosuspend(&pci->dev);
2107 
2108 out_free:
2109 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
2110 		&& !hda->need_i915_power)
2111 		snd_hdac_display_power(bus, false);
2112 
2113 i915_power_fail:
2114 	if (err < 0)
2115 		hda->init_failed = 1;
2116 	complete_all(&hda->probe_wait);
2117 	return err;
2118 }
2119 
2120 static void azx_remove(struct pci_dev *pci)
2121 {
2122 	struct snd_card *card = pci_get_drvdata(pci);
2123 	struct azx *chip;
2124 	struct hda_intel *hda;
2125 
2126 	if (card) {
2127 		/* cancel the pending probing work */
2128 		chip = card->private_data;
2129 		hda = container_of(chip, struct hda_intel, chip);
2130 		cancel_work_sync(&hda->probe_work);
2131 
2132 		snd_card_free(card);
2133 	}
2134 }
2135 
2136 static void azx_shutdown(struct pci_dev *pci)
2137 {
2138 	struct snd_card *card = pci_get_drvdata(pci);
2139 	struct azx *chip;
2140 
2141 	if (!card)
2142 		return;
2143 	chip = card->private_data;
2144 	if (chip && chip->running)
2145 		azx_stop_chip(chip);
2146 }
2147 
2148 /* PCI IDs */
2149 static const struct pci_device_id azx_ids[] = {
2150 	/* CPT */
2151 	{ PCI_DEVICE(0x8086, 0x1c20),
2152 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2153 	/* PBG */
2154 	{ PCI_DEVICE(0x8086, 0x1d20),
2155 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2156 	/* Panther Point */
2157 	{ PCI_DEVICE(0x8086, 0x1e20),
2158 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2159 	/* Lynx Point */
2160 	{ PCI_DEVICE(0x8086, 0x8c20),
2161 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2162 	/* 9 Series */
2163 	{ PCI_DEVICE(0x8086, 0x8ca0),
2164 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2165 	/* Wellsburg */
2166 	{ PCI_DEVICE(0x8086, 0x8d20),
2167 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2168 	{ PCI_DEVICE(0x8086, 0x8d21),
2169 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2170 	/* Lewisburg */
2171 	{ PCI_DEVICE(0x8086, 0xa1f0),
2172 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2173 	{ PCI_DEVICE(0x8086, 0xa270),
2174 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2175 	/* Lynx Point-LP */
2176 	{ PCI_DEVICE(0x8086, 0x9c20),
2177 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2178 	/* Lynx Point-LP */
2179 	{ PCI_DEVICE(0x8086, 0x9c21),
2180 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2181 	/* Wildcat Point-LP */
2182 	{ PCI_DEVICE(0x8086, 0x9ca0),
2183 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2184 	/* Sunrise Point */
2185 	{ PCI_DEVICE(0x8086, 0xa170),
2186 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2187 	/* Sunrise Point-LP */
2188 	{ PCI_DEVICE(0x8086, 0x9d70),
2189 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2190 	/* Kabylake */
2191 	{ PCI_DEVICE(0x8086, 0xa171),
2192 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2193 	/* Kabylake-LP */
2194 	{ PCI_DEVICE(0x8086, 0x9d71),
2195 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2196 	/* Kabylake-H */
2197 	{ PCI_DEVICE(0x8086, 0xa2f0),
2198 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2199 	/* Broxton-P(Apollolake) */
2200 	{ PCI_DEVICE(0x8086, 0x5a98),
2201 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
2202 	/* Broxton-T */
2203 	{ PCI_DEVICE(0x8086, 0x1a98),
2204 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
2205 	/* Haswell */
2206 	{ PCI_DEVICE(0x8086, 0x0a0c),
2207 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2208 	{ PCI_DEVICE(0x8086, 0x0c0c),
2209 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2210 	{ PCI_DEVICE(0x8086, 0x0d0c),
2211 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2212 	/* Broadwell */
2213 	{ PCI_DEVICE(0x8086, 0x160c),
2214 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL },
2215 	/* 5 Series/3400 */
2216 	{ PCI_DEVICE(0x8086, 0x3b56),
2217 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2218 	/* Poulsbo */
2219 	{ PCI_DEVICE(0x8086, 0x811b),
2220 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2221 	/* Oaktrail */
2222 	{ PCI_DEVICE(0x8086, 0x080a),
2223 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2224 	/* BayTrail */
2225 	{ PCI_DEVICE(0x8086, 0x0f04),
2226 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL },
2227 	/* Braswell */
2228 	{ PCI_DEVICE(0x8086, 0x2284),
2229 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL },
2230 	/* ICH6 */
2231 	{ PCI_DEVICE(0x8086, 0x2668),
2232 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2233 	/* ICH7 */
2234 	{ PCI_DEVICE(0x8086, 0x27d8),
2235 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2236 	/* ESB2 */
2237 	{ PCI_DEVICE(0x8086, 0x269a),
2238 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2239 	/* ICH8 */
2240 	{ PCI_DEVICE(0x8086, 0x284b),
2241 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2242 	/* ICH9 */
2243 	{ PCI_DEVICE(0x8086, 0x293e),
2244 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2245 	/* ICH9 */
2246 	{ PCI_DEVICE(0x8086, 0x293f),
2247 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2248 	/* ICH10 */
2249 	{ PCI_DEVICE(0x8086, 0x3a3e),
2250 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2251 	/* ICH10 */
2252 	{ PCI_DEVICE(0x8086, 0x3a6e),
2253 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2254 	/* Generic Intel */
2255 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2256 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2257 	  .class_mask = 0xffffff,
2258 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
2259 	/* ATI SB 450/600/700/800/900 */
2260 	{ PCI_DEVICE(0x1002, 0x437b),
2261 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2262 	{ PCI_DEVICE(0x1002, 0x4383),
2263 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2264 	/* AMD Hudson */
2265 	{ PCI_DEVICE(0x1022, 0x780d),
2266 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2267 	/* ATI HDMI */
2268 	{ PCI_DEVICE(0x1002, 0x1308),
2269 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2270 	{ PCI_DEVICE(0x1002, 0x157a),
2271 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2272 	{ PCI_DEVICE(0x1002, 0x15b3),
2273 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2274 	{ PCI_DEVICE(0x1002, 0x793b),
2275 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2276 	{ PCI_DEVICE(0x1002, 0x7919),
2277 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2278 	{ PCI_DEVICE(0x1002, 0x960f),
2279 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2280 	{ PCI_DEVICE(0x1002, 0x970f),
2281 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2282 	{ PCI_DEVICE(0x1002, 0x9840),
2283 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2284 	{ PCI_DEVICE(0x1002, 0xaa00),
2285 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2286 	{ PCI_DEVICE(0x1002, 0xaa08),
2287 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2288 	{ PCI_DEVICE(0x1002, 0xaa10),
2289 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2290 	{ PCI_DEVICE(0x1002, 0xaa18),
2291 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2292 	{ PCI_DEVICE(0x1002, 0xaa20),
2293 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2294 	{ PCI_DEVICE(0x1002, 0xaa28),
2295 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2296 	{ PCI_DEVICE(0x1002, 0xaa30),
2297 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2298 	{ PCI_DEVICE(0x1002, 0xaa38),
2299 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2300 	{ PCI_DEVICE(0x1002, 0xaa40),
2301 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2302 	{ PCI_DEVICE(0x1002, 0xaa48),
2303 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2304 	{ PCI_DEVICE(0x1002, 0xaa50),
2305 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2306 	{ PCI_DEVICE(0x1002, 0xaa58),
2307 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2308 	{ PCI_DEVICE(0x1002, 0xaa60),
2309 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2310 	{ PCI_DEVICE(0x1002, 0xaa68),
2311 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2312 	{ PCI_DEVICE(0x1002, 0xaa80),
2313 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2314 	{ PCI_DEVICE(0x1002, 0xaa88),
2315 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2316 	{ PCI_DEVICE(0x1002, 0xaa90),
2317 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2318 	{ PCI_DEVICE(0x1002, 0xaa98),
2319 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2320 	{ PCI_DEVICE(0x1002, 0x9902),
2321 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2322 	{ PCI_DEVICE(0x1002, 0xaaa0),
2323 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2324 	{ PCI_DEVICE(0x1002, 0xaaa8),
2325 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2326 	{ PCI_DEVICE(0x1002, 0xaab0),
2327 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2328 	{ PCI_DEVICE(0x1002, 0xaac0),
2329 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2330 	{ PCI_DEVICE(0x1002, 0xaac8),
2331 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2332 	{ PCI_DEVICE(0x1002, 0xaad8),
2333 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2334 	{ PCI_DEVICE(0x1002, 0xaae8),
2335 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2336 	{ PCI_DEVICE(0x1002, 0xaae0),
2337 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2338 	{ PCI_DEVICE(0x1002, 0xaaf0),
2339 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2340 	/* VIA VT8251/VT8237A */
2341 	{ PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2342 	/* VIA GFX VT7122/VX900 */
2343 	{ PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2344 	/* VIA GFX VT6122/VX11 */
2345 	{ PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2346 	/* SIS966 */
2347 	{ PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2348 	/* ULI M5461 */
2349 	{ PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2350 	/* NVIDIA MCP */
2351 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2352 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2353 	  .class_mask = 0xffffff,
2354 	  .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2355 	/* Teradici */
2356 	{ PCI_DEVICE(0x6549, 0x1200),
2357 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2358 	{ PCI_DEVICE(0x6549, 0x2200),
2359 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2360 	/* Creative X-Fi (CA0110-IBG) */
2361 	/* CTHDA chips */
2362 	{ PCI_DEVICE(0x1102, 0x0010),
2363 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2364 	{ PCI_DEVICE(0x1102, 0x0012),
2365 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2366 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2367 	/* the following entry conflicts with snd-ctxfi driver,
2368 	 * as ctxfi driver mutates from HD-audio to native mode with
2369 	 * a special command sequence.
2370 	 */
2371 	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2372 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2373 	  .class_mask = 0xffffff,
2374 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2375 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2376 #else
2377 	/* this entry seems still valid -- i.e. without emu20kx chip */
2378 	{ PCI_DEVICE(0x1102, 0x0009),
2379 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2380 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2381 #endif
2382 	/* CM8888 */
2383 	{ PCI_DEVICE(0x13f6, 0x5011),
2384 	  .driver_data = AZX_DRIVER_CMEDIA |
2385 	  AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
2386 	/* Vortex86MX */
2387 	{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2388 	/* VMware HDAudio */
2389 	{ PCI_DEVICE(0x15ad, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2390 	/* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2391 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2392 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2393 	  .class_mask = 0xffffff,
2394 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2395 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2396 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2397 	  .class_mask = 0xffffff,
2398 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2399 	{ 0, }
2400 };
2401 MODULE_DEVICE_TABLE(pci, azx_ids);
2402 
2403 /* pci_driver definition */
2404 static struct pci_driver azx_driver = {
2405 	.name = KBUILD_MODNAME,
2406 	.id_table = azx_ids,
2407 	.probe = azx_probe,
2408 	.remove = azx_remove,
2409 	.shutdown = azx_shutdown,
2410 	.driver = {
2411 		.pm = AZX_PM_OPS,
2412 	},
2413 };
2414 
2415 module_pci_driver(azx_driver);
2416