xref: /openbmc/linux/sound/pci/hda/hda_intel.c (revision b802fb99)
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_BROXTON(pci)	((pci)->device == 0x5a98)
367 
368 static char *driver_short_names[] = {
369 	[AZX_DRIVER_ICH] = "HDA Intel",
370 	[AZX_DRIVER_PCH] = "HDA Intel PCH",
371 	[AZX_DRIVER_SCH] = "HDA Intel MID",
372 	[AZX_DRIVER_HDMI] = "HDA Intel HDMI",
373 	[AZX_DRIVER_ATI] = "HDA ATI SB",
374 	[AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
375 	[AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
376 	[AZX_DRIVER_VIA] = "HDA VIA VT82xx",
377 	[AZX_DRIVER_SIS] = "HDA SIS966",
378 	[AZX_DRIVER_ULI] = "HDA ULI M5461",
379 	[AZX_DRIVER_NVIDIA] = "HDA NVidia",
380 	[AZX_DRIVER_TERA] = "HDA Teradici",
381 	[AZX_DRIVER_CTX] = "HDA Creative",
382 	[AZX_DRIVER_CTHDA] = "HDA Creative",
383 	[AZX_DRIVER_CMEDIA] = "HDA C-Media",
384 	[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
385 };
386 
387 #ifdef CONFIG_X86
388 static void __mark_pages_wc(struct azx *chip, struct snd_dma_buffer *dmab, bool on)
389 {
390 	int pages;
391 
392 	if (azx_snoop(chip))
393 		return;
394 	if (!dmab || !dmab->area || !dmab->bytes)
395 		return;
396 
397 #ifdef CONFIG_SND_DMA_SGBUF
398 	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG) {
399 		struct snd_sg_buf *sgbuf = dmab->private_data;
400 		if (chip->driver_type == AZX_DRIVER_CMEDIA)
401 			return; /* deal with only CORB/RIRB buffers */
402 		if (on)
403 			set_pages_array_wc(sgbuf->page_table, sgbuf->pages);
404 		else
405 			set_pages_array_wb(sgbuf->page_table, sgbuf->pages);
406 		return;
407 	}
408 #endif
409 
410 	pages = (dmab->bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
411 	if (on)
412 		set_memory_wc((unsigned long)dmab->area, pages);
413 	else
414 		set_memory_wb((unsigned long)dmab->area, pages);
415 }
416 
417 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
418 				 bool on)
419 {
420 	__mark_pages_wc(chip, buf, on);
421 }
422 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
423 				   struct snd_pcm_substream *substream, bool on)
424 {
425 	if (azx_dev->wc_marked != on) {
426 		__mark_pages_wc(chip, snd_pcm_get_dma_buf(substream), on);
427 		azx_dev->wc_marked = on;
428 	}
429 }
430 #else
431 /* NOP for other archs */
432 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
433 				 bool on)
434 {
435 }
436 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
437 				   struct snd_pcm_substream *substream, bool on)
438 {
439 }
440 #endif
441 
442 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
443 
444 /*
445  * initialize the PCI registers
446  */
447 /* update bits in a PCI register byte */
448 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
449 			    unsigned char mask, unsigned char val)
450 {
451 	unsigned char data;
452 
453 	pci_read_config_byte(pci, reg, &data);
454 	data &= ~mask;
455 	data |= (val & mask);
456 	pci_write_config_byte(pci, reg, data);
457 }
458 
459 static void azx_init_pci(struct azx *chip)
460 {
461 	int snoop_type = azx_get_snoop_type(chip);
462 
463 	/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
464 	 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
465 	 * Ensuring these bits are 0 clears playback static on some HD Audio
466 	 * codecs.
467 	 * The PCI register TCSEL is defined in the Intel manuals.
468 	 */
469 	if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
470 		dev_dbg(chip->card->dev, "Clearing TCSEL\n");
471 		update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
472 	}
473 
474 	/* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
475 	 * we need to enable snoop.
476 	 */
477 	if (snoop_type == AZX_SNOOP_TYPE_ATI) {
478 		dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
479 			azx_snoop(chip));
480 		update_pci_byte(chip->pci,
481 				ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
482 				azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
483 	}
484 
485 	/* For NVIDIA HDA, enable snoop */
486 	if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
487 		dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
488 			azx_snoop(chip));
489 		update_pci_byte(chip->pci,
490 				NVIDIA_HDA_TRANSREG_ADDR,
491 				0x0f, NVIDIA_HDA_ENABLE_COHBITS);
492 		update_pci_byte(chip->pci,
493 				NVIDIA_HDA_ISTRM_COH,
494 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
495 		update_pci_byte(chip->pci,
496 				NVIDIA_HDA_OSTRM_COH,
497 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
498 	}
499 
500 	/* Enable SCH/PCH snoop if needed */
501 	if (snoop_type == AZX_SNOOP_TYPE_SCH) {
502 		unsigned short snoop;
503 		pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
504 		if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
505 		    (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
506 			snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
507 			if (!azx_snoop(chip))
508 				snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
509 			pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
510 			pci_read_config_word(chip->pci,
511 				INTEL_SCH_HDA_DEVC, &snoop);
512 		}
513 		dev_dbg(chip->card->dev, "SCH snoop: %s\n",
514 			(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
515 			"Disabled" : "Enabled");
516         }
517 }
518 
519 /*
520  * In BXT-P A0, HD-Audio DMA requests is later than expected,
521  * and makes an audio stream sensitive to system latencies when
522  * 24/32 bits are playing.
523  * Adjusting threshold of DMA fifo to force the DMA request
524  * sooner to improve latency tolerance at the expense of power.
525  */
526 static void bxt_reduce_dma_latency(struct azx *chip)
527 {
528 	u32 val;
529 
530 	val = azx_readl(chip, SKL_EM4L);
531 	val &= (0x3 << 20);
532 	azx_writel(chip, SKL_EM4L, val);
533 }
534 
535 static void hda_intel_init_chip(struct azx *chip, bool full_reset)
536 {
537 	struct hdac_bus *bus = azx_bus(chip);
538 	struct pci_dev *pci = chip->pci;
539 	u32 val;
540 
541 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
542 		snd_hdac_set_codec_wakeup(bus, true);
543 	if (IS_BROXTON(pci)) {
544 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
545 		val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
546 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
547 	}
548 	azx_init_chip(chip, full_reset);
549 	if (IS_BROXTON(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 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
555 		snd_hdac_set_codec_wakeup(bus, false);
556 
557 	/* reduce dma latency to avoid noise */
558 	if (IS_BROXTON(pci))
559 		bxt_reduce_dma_latency(chip);
560 }
561 
562 /* calculate runtime delay from LPIB */
563 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
564 				   unsigned int pos)
565 {
566 	struct snd_pcm_substream *substream = azx_dev->core.substream;
567 	int stream = substream->stream;
568 	unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
569 	int delay;
570 
571 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
572 		delay = pos - lpib_pos;
573 	else
574 		delay = lpib_pos - pos;
575 	if (delay < 0) {
576 		if (delay >= azx_dev->core.delay_negative_threshold)
577 			delay = 0;
578 		else
579 			delay += azx_dev->core.bufsize;
580 	}
581 
582 	if (delay >= azx_dev->core.period_bytes) {
583 		dev_info(chip->card->dev,
584 			 "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
585 			 delay, azx_dev->core.period_bytes);
586 		delay = 0;
587 		chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
588 		chip->get_delay[stream] = NULL;
589 	}
590 
591 	return bytes_to_frames(substream->runtime, delay);
592 }
593 
594 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
595 
596 /* called from IRQ */
597 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
598 {
599 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
600 	int ok;
601 
602 	ok = azx_position_ok(chip, azx_dev);
603 	if (ok == 1) {
604 		azx_dev->irq_pending = 0;
605 		return ok;
606 	} else if (ok == 0) {
607 		/* bogus IRQ, process it later */
608 		azx_dev->irq_pending = 1;
609 		schedule_work(&hda->irq_pending_work);
610 	}
611 	return 0;
612 }
613 
614 /* Enable/disable i915 display power for the link */
615 static int azx_intel_link_power(struct azx *chip, bool enable)
616 {
617 	struct hdac_bus *bus = azx_bus(chip);
618 
619 	return snd_hdac_display_power(bus, enable);
620 }
621 
622 /*
623  * Check whether the current DMA position is acceptable for updating
624  * periods.  Returns non-zero if it's OK.
625  *
626  * Many HD-audio controllers appear pretty inaccurate about
627  * the update-IRQ timing.  The IRQ is issued before actually the
628  * data is processed.  So, we need to process it afterwords in a
629  * workqueue.
630  */
631 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
632 {
633 	struct snd_pcm_substream *substream = azx_dev->core.substream;
634 	int stream = substream->stream;
635 	u32 wallclk;
636 	unsigned int pos;
637 
638 	wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
639 	if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
640 		return -1;	/* bogus (too early) interrupt */
641 
642 	if (chip->get_position[stream])
643 		pos = chip->get_position[stream](chip, azx_dev);
644 	else { /* use the position buffer as default */
645 		pos = azx_get_pos_posbuf(chip, azx_dev);
646 		if (!pos || pos == (u32)-1) {
647 			dev_info(chip->card->dev,
648 				 "Invalid position buffer, using LPIB read method instead.\n");
649 			chip->get_position[stream] = azx_get_pos_lpib;
650 			if (chip->get_position[0] == azx_get_pos_lpib &&
651 			    chip->get_position[1] == azx_get_pos_lpib)
652 				azx_bus(chip)->use_posbuf = false;
653 			pos = azx_get_pos_lpib(chip, azx_dev);
654 			chip->get_delay[stream] = NULL;
655 		} else {
656 			chip->get_position[stream] = azx_get_pos_posbuf;
657 			if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
658 				chip->get_delay[stream] = azx_get_delay_from_lpib;
659 		}
660 	}
661 
662 	if (pos >= azx_dev->core.bufsize)
663 		pos = 0;
664 
665 	if (WARN_ONCE(!azx_dev->core.period_bytes,
666 		      "hda-intel: zero azx_dev->period_bytes"))
667 		return -1; /* this shouldn't happen! */
668 	if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
669 	    pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
670 		/* NG - it's below the first next period boundary */
671 		return chip->bdl_pos_adj ? 0 : -1;
672 	azx_dev->core.start_wallclk += wallclk;
673 	return 1; /* OK, it's fine */
674 }
675 
676 /*
677  * The work for pending PCM period updates.
678  */
679 static void azx_irq_pending_work(struct work_struct *work)
680 {
681 	struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
682 	struct azx *chip = &hda->chip;
683 	struct hdac_bus *bus = azx_bus(chip);
684 	struct hdac_stream *s;
685 	int pending, ok;
686 
687 	if (!hda->irq_pending_warned) {
688 		dev_info(chip->card->dev,
689 			 "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
690 			 chip->card->number);
691 		hda->irq_pending_warned = 1;
692 	}
693 
694 	for (;;) {
695 		pending = 0;
696 		spin_lock_irq(&bus->reg_lock);
697 		list_for_each_entry(s, &bus->stream_list, list) {
698 			struct azx_dev *azx_dev = stream_to_azx_dev(s);
699 			if (!azx_dev->irq_pending ||
700 			    !s->substream ||
701 			    !s->running)
702 				continue;
703 			ok = azx_position_ok(chip, azx_dev);
704 			if (ok > 0) {
705 				azx_dev->irq_pending = 0;
706 				spin_unlock(&bus->reg_lock);
707 				snd_pcm_period_elapsed(s->substream);
708 				spin_lock(&bus->reg_lock);
709 			} else if (ok < 0) {
710 				pending = 0;	/* too early */
711 			} else
712 				pending++;
713 		}
714 		spin_unlock_irq(&bus->reg_lock);
715 		if (!pending)
716 			return;
717 		msleep(1);
718 	}
719 }
720 
721 /* clear irq_pending flags and assure no on-going workq */
722 static void azx_clear_irq_pending(struct azx *chip)
723 {
724 	struct hdac_bus *bus = azx_bus(chip);
725 	struct hdac_stream *s;
726 
727 	spin_lock_irq(&bus->reg_lock);
728 	list_for_each_entry(s, &bus->stream_list, list) {
729 		struct azx_dev *azx_dev = stream_to_azx_dev(s);
730 		azx_dev->irq_pending = 0;
731 	}
732 	spin_unlock_irq(&bus->reg_lock);
733 }
734 
735 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
736 {
737 	struct hdac_bus *bus = azx_bus(chip);
738 
739 	if (request_irq(chip->pci->irq, azx_interrupt,
740 			chip->msi ? 0 : IRQF_SHARED,
741 			chip->card->irq_descr, chip)) {
742 		dev_err(chip->card->dev,
743 			"unable to grab IRQ %d, disabling device\n",
744 			chip->pci->irq);
745 		if (do_disconnect)
746 			snd_card_disconnect(chip->card);
747 		return -1;
748 	}
749 	bus->irq = chip->pci->irq;
750 	pci_intx(chip->pci, !chip->msi);
751 	return 0;
752 }
753 
754 /* get the current DMA position with correction on VIA chips */
755 static unsigned int azx_via_get_position(struct azx *chip,
756 					 struct azx_dev *azx_dev)
757 {
758 	unsigned int link_pos, mini_pos, bound_pos;
759 	unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
760 	unsigned int fifo_size;
761 
762 	link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
763 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
764 		/* Playback, no problem using link position */
765 		return link_pos;
766 	}
767 
768 	/* Capture */
769 	/* For new chipset,
770 	 * use mod to get the DMA position just like old chipset
771 	 */
772 	mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
773 	mod_dma_pos %= azx_dev->core.period_bytes;
774 
775 	/* azx_dev->fifo_size can't get FIFO size of in stream.
776 	 * Get from base address + offset.
777 	 */
778 	fifo_size = readw(azx_bus(chip)->remap_addr +
779 			  VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
780 
781 	if (azx_dev->insufficient) {
782 		/* Link position never gather than FIFO size */
783 		if (link_pos <= fifo_size)
784 			return 0;
785 
786 		azx_dev->insufficient = 0;
787 	}
788 
789 	if (link_pos <= fifo_size)
790 		mini_pos = azx_dev->core.bufsize + link_pos - fifo_size;
791 	else
792 		mini_pos = link_pos - fifo_size;
793 
794 	/* Find nearest previous boudary */
795 	mod_mini_pos = mini_pos % azx_dev->core.period_bytes;
796 	mod_link_pos = link_pos % azx_dev->core.period_bytes;
797 	if (mod_link_pos >= fifo_size)
798 		bound_pos = link_pos - mod_link_pos;
799 	else if (mod_dma_pos >= mod_mini_pos)
800 		bound_pos = mini_pos - mod_mini_pos;
801 	else {
802 		bound_pos = mini_pos - mod_mini_pos + azx_dev->core.period_bytes;
803 		if (bound_pos >= azx_dev->core.bufsize)
804 			bound_pos = 0;
805 	}
806 
807 	/* Calculate real DMA position we want */
808 	return bound_pos + mod_dma_pos;
809 }
810 
811 #ifdef CONFIG_PM
812 static DEFINE_MUTEX(card_list_lock);
813 static LIST_HEAD(card_list);
814 
815 static void azx_add_card_list(struct azx *chip)
816 {
817 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
818 	mutex_lock(&card_list_lock);
819 	list_add(&hda->list, &card_list);
820 	mutex_unlock(&card_list_lock);
821 }
822 
823 static void azx_del_card_list(struct azx *chip)
824 {
825 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
826 	mutex_lock(&card_list_lock);
827 	list_del_init(&hda->list);
828 	mutex_unlock(&card_list_lock);
829 }
830 
831 /* trigger power-save check at writing parameter */
832 static int param_set_xint(const char *val, const struct kernel_param *kp)
833 {
834 	struct hda_intel *hda;
835 	struct azx *chip;
836 	int prev = power_save;
837 	int ret = param_set_int(val, kp);
838 
839 	if (ret || prev == power_save)
840 		return ret;
841 
842 	mutex_lock(&card_list_lock);
843 	list_for_each_entry(hda, &card_list, list) {
844 		chip = &hda->chip;
845 		if (!hda->probe_continued || chip->disabled)
846 			continue;
847 		snd_hda_set_power_save(&chip->bus, power_save * 1000);
848 	}
849 	mutex_unlock(&card_list_lock);
850 	return 0;
851 }
852 #else
853 #define azx_add_card_list(chip) /* NOP */
854 #define azx_del_card_list(chip) /* NOP */
855 #endif /* CONFIG_PM */
856 
857 /* Intel HSW/BDW display HDA controller is in GPU. Both its power and link BCLK
858  * depends on GPU. Two Extended Mode registers EM4 (M value) and EM5 (N Value)
859  * are used to convert CDClk (Core Display Clock) to 24MHz BCLK:
860  * BCLK = CDCLK * M / N
861  * The values will be lost when the display power well is disabled and need to
862  * be restored to avoid abnormal playback speed.
863  */
864 static void haswell_set_bclk(struct hda_intel *hda)
865 {
866 	struct azx *chip = &hda->chip;
867 	int cdclk_freq;
868 	unsigned int bclk_m, bclk_n;
869 
870 	if (!hda->need_i915_power)
871 		return;
872 
873 	cdclk_freq = snd_hdac_get_display_clk(azx_bus(chip));
874 	switch (cdclk_freq) {
875 	case 337500:
876 		bclk_m = 16;
877 		bclk_n = 225;
878 		break;
879 
880 	case 450000:
881 	default: /* default CDCLK 450MHz */
882 		bclk_m = 4;
883 		bclk_n = 75;
884 		break;
885 
886 	case 540000:
887 		bclk_m = 4;
888 		bclk_n = 90;
889 		break;
890 
891 	case 675000:
892 		bclk_m = 8;
893 		bclk_n = 225;
894 		break;
895 	}
896 
897 	azx_writew(chip, HSW_EM4, bclk_m);
898 	azx_writew(chip, HSW_EM5, bclk_n);
899 }
900 
901 #if defined(CONFIG_PM_SLEEP) || defined(SUPPORT_VGA_SWITCHEROO)
902 /*
903  * power management
904  */
905 static int azx_suspend(struct device *dev)
906 {
907 	struct snd_card *card = dev_get_drvdata(dev);
908 	struct azx *chip;
909 	struct hda_intel *hda;
910 	struct hdac_bus *bus;
911 
912 	if (!card)
913 		return 0;
914 
915 	chip = card->private_data;
916 	hda = container_of(chip, struct hda_intel, chip);
917 	if (chip->disabled || hda->init_failed || !chip->running)
918 		return 0;
919 
920 	bus = azx_bus(chip);
921 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
922 	azx_clear_irq_pending(chip);
923 	azx_stop_chip(chip);
924 	azx_enter_link_reset(chip);
925 	if (bus->irq >= 0) {
926 		free_irq(bus->irq, chip);
927 		bus->irq = -1;
928 	}
929 
930 	if (chip->msi)
931 		pci_disable_msi(chip->pci);
932 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
933 		&& hda->need_i915_power)
934 		snd_hdac_display_power(bus, false);
935 
936 	trace_azx_suspend(chip);
937 	return 0;
938 }
939 
940 static int azx_resume(struct device *dev)
941 {
942 	struct pci_dev *pci = to_pci_dev(dev);
943 	struct snd_card *card = dev_get_drvdata(dev);
944 	struct azx *chip;
945 	struct hda_intel *hda;
946 
947 	if (!card)
948 		return 0;
949 
950 	chip = card->private_data;
951 	hda = container_of(chip, struct hda_intel, chip);
952 	if (chip->disabled || hda->init_failed || !chip->running)
953 		return 0;
954 
955 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
956 		&& hda->need_i915_power) {
957 		snd_hdac_display_power(azx_bus(chip), true);
958 		haswell_set_bclk(hda);
959 	}
960 	if (chip->msi)
961 		if (pci_enable_msi(pci) < 0)
962 			chip->msi = 0;
963 	if (azx_acquire_irq(chip, 1) < 0)
964 		return -EIO;
965 	azx_init_pci(chip);
966 
967 	hda_intel_init_chip(chip, true);
968 
969 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
970 
971 	trace_azx_resume(chip);
972 	return 0;
973 }
974 #endif /* CONFIG_PM_SLEEP || SUPPORT_VGA_SWITCHEROO */
975 
976 #ifdef CONFIG_PM_SLEEP
977 /* put codec down to D3 at hibernation for Intel SKL+;
978  * otherwise BIOS may still access the codec and screw up the driver
979  */
980 #define IS_SKL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa170)
981 #define IS_SKL_LP(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x9d70)
982 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
983 #define IS_SKL_PLUS(pci) (IS_SKL(pci) || IS_SKL_LP(pci) || IS_BXT(pci))
984 
985 static int azx_freeze_noirq(struct device *dev)
986 {
987 	struct pci_dev *pci = to_pci_dev(dev);
988 
989 	if (IS_SKL_PLUS(pci))
990 		pci_set_power_state(pci, PCI_D3hot);
991 
992 	return 0;
993 }
994 
995 static int azx_thaw_noirq(struct device *dev)
996 {
997 	struct pci_dev *pci = to_pci_dev(dev);
998 
999 	if (IS_SKL_PLUS(pci))
1000 		pci_set_power_state(pci, PCI_D0);
1001 
1002 	return 0;
1003 }
1004 #endif /* CONFIG_PM_SLEEP */
1005 
1006 #ifdef CONFIG_PM
1007 static int azx_runtime_suspend(struct device *dev)
1008 {
1009 	struct snd_card *card = dev_get_drvdata(dev);
1010 	struct azx *chip;
1011 	struct hda_intel *hda;
1012 
1013 	if (!card)
1014 		return 0;
1015 
1016 	chip = card->private_data;
1017 	hda = container_of(chip, struct hda_intel, chip);
1018 	if (chip->disabled || hda->init_failed)
1019 		return 0;
1020 
1021 	if (!azx_has_pm_runtime(chip))
1022 		return 0;
1023 
1024 	/* enable controller wake up event */
1025 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
1026 		  STATESTS_INT_MASK);
1027 
1028 	azx_stop_chip(chip);
1029 	azx_enter_link_reset(chip);
1030 	azx_clear_irq_pending(chip);
1031 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
1032 		&& hda->need_i915_power)
1033 		snd_hdac_display_power(azx_bus(chip), false);
1034 
1035 	trace_azx_runtime_suspend(chip);
1036 	return 0;
1037 }
1038 
1039 static int azx_runtime_resume(struct device *dev)
1040 {
1041 	struct snd_card *card = dev_get_drvdata(dev);
1042 	struct azx *chip;
1043 	struct hda_intel *hda;
1044 	struct hdac_bus *bus;
1045 	struct hda_codec *codec;
1046 	int status;
1047 
1048 	if (!card)
1049 		return 0;
1050 
1051 	chip = card->private_data;
1052 	hda = container_of(chip, struct hda_intel, chip);
1053 	if (chip->disabled || hda->init_failed)
1054 		return 0;
1055 
1056 	if (!azx_has_pm_runtime(chip))
1057 		return 0;
1058 
1059 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1060 		bus = azx_bus(chip);
1061 		if (hda->need_i915_power) {
1062 			snd_hdac_display_power(bus, true);
1063 			haswell_set_bclk(hda);
1064 		} else {
1065 			/* toggle codec wakeup bit for STATESTS read */
1066 			snd_hdac_set_codec_wakeup(bus, true);
1067 			snd_hdac_set_codec_wakeup(bus, false);
1068 		}
1069 	}
1070 
1071 	/* Read STATESTS before controller reset */
1072 	status = azx_readw(chip, STATESTS);
1073 
1074 	azx_init_pci(chip);
1075 	hda_intel_init_chip(chip, true);
1076 
1077 	if (status) {
1078 		list_for_each_codec(codec, &chip->bus)
1079 			if (status & (1 << codec->addr))
1080 				schedule_delayed_work(&codec->jackpoll_work,
1081 						      codec->jackpoll_interval);
1082 	}
1083 
1084 	/* disable controller Wake Up event*/
1085 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
1086 			~STATESTS_INT_MASK);
1087 
1088 	trace_azx_runtime_resume(chip);
1089 	return 0;
1090 }
1091 
1092 static int azx_runtime_idle(struct device *dev)
1093 {
1094 	struct snd_card *card = dev_get_drvdata(dev);
1095 	struct azx *chip;
1096 	struct hda_intel *hda;
1097 
1098 	if (!card)
1099 		return 0;
1100 
1101 	chip = card->private_data;
1102 	hda = container_of(chip, struct hda_intel, chip);
1103 	if (chip->disabled || hda->init_failed)
1104 		return 0;
1105 
1106 	if (!power_save_controller || !azx_has_pm_runtime(chip) ||
1107 	    azx_bus(chip)->codec_powered || !chip->running)
1108 		return -EBUSY;
1109 
1110 	return 0;
1111 }
1112 
1113 static const struct dev_pm_ops azx_pm = {
1114 	SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
1115 #ifdef CONFIG_PM_SLEEP
1116 	.freeze_noirq = azx_freeze_noirq,
1117 	.thaw_noirq = azx_thaw_noirq,
1118 #endif
1119 	SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
1120 };
1121 
1122 #define AZX_PM_OPS	&azx_pm
1123 #else
1124 #define AZX_PM_OPS	NULL
1125 #endif /* CONFIG_PM */
1126 
1127 
1128 static int azx_probe_continue(struct azx *chip);
1129 
1130 #ifdef SUPPORT_VGA_SWITCHEROO
1131 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
1132 
1133 static void azx_vs_set_state(struct pci_dev *pci,
1134 			     enum vga_switcheroo_state state)
1135 {
1136 	struct snd_card *card = pci_get_drvdata(pci);
1137 	struct azx *chip = card->private_data;
1138 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1139 	bool disabled;
1140 
1141 	wait_for_completion(&hda->probe_wait);
1142 	if (hda->init_failed)
1143 		return;
1144 
1145 	disabled = (state == VGA_SWITCHEROO_OFF);
1146 	if (chip->disabled == disabled)
1147 		return;
1148 
1149 	if (!hda->probe_continued) {
1150 		chip->disabled = disabled;
1151 		if (!disabled) {
1152 			dev_info(chip->card->dev,
1153 				 "Start delayed initialization\n");
1154 			if (azx_probe_continue(chip) < 0) {
1155 				dev_err(chip->card->dev, "initialization error\n");
1156 				hda->init_failed = true;
1157 			}
1158 		}
1159 	} else {
1160 		dev_info(chip->card->dev, "%s via vga_switcheroo\n",
1161 			 disabled ? "Disabling" : "Enabling");
1162 		if (disabled) {
1163 			pm_runtime_put_sync_suspend(card->dev);
1164 			azx_suspend(card->dev);
1165 			/* when we get suspended by vga_switcheroo we end up in D3cold,
1166 			 * however we have no ACPI handle, so pci/acpi can't put us there,
1167 			 * put ourselves there */
1168 			pci->current_state = PCI_D3cold;
1169 			chip->disabled = true;
1170 			if (snd_hda_lock_devices(&chip->bus))
1171 				dev_warn(chip->card->dev,
1172 					 "Cannot lock devices!\n");
1173 		} else {
1174 			snd_hda_unlock_devices(&chip->bus);
1175 			pm_runtime_get_noresume(card->dev);
1176 			chip->disabled = false;
1177 			azx_resume(card->dev);
1178 		}
1179 	}
1180 }
1181 
1182 static bool azx_vs_can_switch(struct pci_dev *pci)
1183 {
1184 	struct snd_card *card = pci_get_drvdata(pci);
1185 	struct azx *chip = card->private_data;
1186 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1187 
1188 	wait_for_completion(&hda->probe_wait);
1189 	if (hda->init_failed)
1190 		return false;
1191 	if (chip->disabled || !hda->probe_continued)
1192 		return true;
1193 	if (snd_hda_lock_devices(&chip->bus))
1194 		return false;
1195 	snd_hda_unlock_devices(&chip->bus);
1196 	return true;
1197 }
1198 
1199 static void init_vga_switcheroo(struct azx *chip)
1200 {
1201 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1202 	struct pci_dev *p = get_bound_vga(chip->pci);
1203 	if (p) {
1204 		dev_info(chip->card->dev,
1205 			 "Handle vga_switcheroo audio client\n");
1206 		hda->use_vga_switcheroo = 1;
1207 		pci_dev_put(p);
1208 	}
1209 }
1210 
1211 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1212 	.set_gpu_state = azx_vs_set_state,
1213 	.can_switch = azx_vs_can_switch,
1214 };
1215 
1216 static int register_vga_switcheroo(struct azx *chip)
1217 {
1218 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1219 	int err;
1220 
1221 	if (!hda->use_vga_switcheroo)
1222 		return 0;
1223 	/* FIXME: currently only handling DIS controller
1224 	 * is there any machine with two switchable HDMI audio controllers?
1225 	 */
1226 	err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops,
1227 						   VGA_SWITCHEROO_DIS);
1228 	if (err < 0)
1229 		return err;
1230 	hda->vga_switcheroo_registered = 1;
1231 
1232 	/* register as an optimus hdmi audio power domain */
1233 	vga_switcheroo_init_domain_pm_optimus_hdmi_audio(chip->card->dev,
1234 							 &hda->hdmi_pm_domain);
1235 	return 0;
1236 }
1237 #else
1238 #define init_vga_switcheroo(chip)		/* NOP */
1239 #define register_vga_switcheroo(chip)		0
1240 #define check_hdmi_disabled(pci)	false
1241 #endif /* SUPPORT_VGA_SWITCHER */
1242 
1243 /*
1244  * destructor
1245  */
1246 static int azx_free(struct azx *chip)
1247 {
1248 	struct pci_dev *pci = chip->pci;
1249 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1250 	struct hdac_bus *bus = azx_bus(chip);
1251 
1252 	if (azx_has_pm_runtime(chip) && chip->running)
1253 		pm_runtime_get_noresume(&pci->dev);
1254 
1255 	azx_del_card_list(chip);
1256 
1257 	hda->init_failed = 1; /* to be sure */
1258 	complete_all(&hda->probe_wait);
1259 
1260 	if (use_vga_switcheroo(hda)) {
1261 		if (chip->disabled && hda->probe_continued)
1262 			snd_hda_unlock_devices(&chip->bus);
1263 		if (hda->vga_switcheroo_registered)
1264 			vga_switcheroo_unregister_client(chip->pci);
1265 	}
1266 
1267 	if (bus->chip_init) {
1268 		azx_clear_irq_pending(chip);
1269 		azx_stop_all_streams(chip);
1270 		azx_stop_chip(chip);
1271 	}
1272 
1273 	if (bus->irq >= 0)
1274 		free_irq(bus->irq, (void*)chip);
1275 	if (chip->msi)
1276 		pci_disable_msi(chip->pci);
1277 	iounmap(bus->remap_addr);
1278 
1279 	azx_free_stream_pages(chip);
1280 	azx_free_streams(chip);
1281 	snd_hdac_bus_exit(bus);
1282 
1283 	if (chip->region_requested)
1284 		pci_release_regions(chip->pci);
1285 
1286 	pci_disable_device(chip->pci);
1287 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1288 	release_firmware(chip->fw);
1289 #endif
1290 
1291 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1292 		if (hda->need_i915_power)
1293 			snd_hdac_display_power(bus, false);
1294 		snd_hdac_i915_exit(bus);
1295 	}
1296 	kfree(hda);
1297 
1298 	return 0;
1299 }
1300 
1301 static int azx_dev_disconnect(struct snd_device *device)
1302 {
1303 	struct azx *chip = device->device_data;
1304 
1305 	chip->bus.shutdown = 1;
1306 	return 0;
1307 }
1308 
1309 static int azx_dev_free(struct snd_device *device)
1310 {
1311 	return azx_free(device->device_data);
1312 }
1313 
1314 #ifdef SUPPORT_VGA_SWITCHEROO
1315 /*
1316  * Check of disabled HDMI controller by vga_switcheroo
1317  */
1318 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1319 {
1320 	struct pci_dev *p;
1321 
1322 	/* check only discrete GPU */
1323 	switch (pci->vendor) {
1324 	case PCI_VENDOR_ID_ATI:
1325 	case PCI_VENDOR_ID_AMD:
1326 	case PCI_VENDOR_ID_NVIDIA:
1327 		if (pci->devfn == 1) {
1328 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1329 							pci->bus->number, 0);
1330 			if (p) {
1331 				if ((p->class >> 8) == PCI_CLASS_DISPLAY_VGA)
1332 					return p;
1333 				pci_dev_put(p);
1334 			}
1335 		}
1336 		break;
1337 	}
1338 	return NULL;
1339 }
1340 
1341 static bool check_hdmi_disabled(struct pci_dev *pci)
1342 {
1343 	bool vga_inactive = false;
1344 	struct pci_dev *p = get_bound_vga(pci);
1345 
1346 	if (p) {
1347 		if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1348 			vga_inactive = true;
1349 		pci_dev_put(p);
1350 	}
1351 	return vga_inactive;
1352 }
1353 #endif /* SUPPORT_VGA_SWITCHEROO */
1354 
1355 /*
1356  * white/black-listing for position_fix
1357  */
1358 static struct snd_pci_quirk position_fix_list[] = {
1359 	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1360 	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1361 	SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1362 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1363 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1364 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1365 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1366 	SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1367 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1368 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1369 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1370 	SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1371 	SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1372 	SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1373 	{}
1374 };
1375 
1376 static int check_position_fix(struct azx *chip, int fix)
1377 {
1378 	const struct snd_pci_quirk *q;
1379 
1380 	switch (fix) {
1381 	case POS_FIX_AUTO:
1382 	case POS_FIX_LPIB:
1383 	case POS_FIX_POSBUF:
1384 	case POS_FIX_VIACOMBO:
1385 	case POS_FIX_COMBO:
1386 		return fix;
1387 	}
1388 
1389 	q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1390 	if (q) {
1391 		dev_info(chip->card->dev,
1392 			 "position_fix set to %d for device %04x:%04x\n",
1393 			 q->value, q->subvendor, q->subdevice);
1394 		return q->value;
1395 	}
1396 
1397 	/* Check VIA/ATI HD Audio Controller exist */
1398 	if (chip->driver_type == AZX_DRIVER_VIA) {
1399 		dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1400 		return POS_FIX_VIACOMBO;
1401 	}
1402 	if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1403 		dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1404 		return POS_FIX_LPIB;
1405 	}
1406 	return POS_FIX_AUTO;
1407 }
1408 
1409 static void assign_position_fix(struct azx *chip, int fix)
1410 {
1411 	static azx_get_pos_callback_t callbacks[] = {
1412 		[POS_FIX_AUTO] = NULL,
1413 		[POS_FIX_LPIB] = azx_get_pos_lpib,
1414 		[POS_FIX_POSBUF] = azx_get_pos_posbuf,
1415 		[POS_FIX_VIACOMBO] = azx_via_get_position,
1416 		[POS_FIX_COMBO] = azx_get_pos_lpib,
1417 	};
1418 
1419 	chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1420 
1421 	/* combo mode uses LPIB only for playback */
1422 	if (fix == POS_FIX_COMBO)
1423 		chip->get_position[1] = NULL;
1424 
1425 	if (fix == POS_FIX_POSBUF &&
1426 	    (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1427 		chip->get_delay[0] = chip->get_delay[1] =
1428 			azx_get_delay_from_lpib;
1429 	}
1430 
1431 }
1432 
1433 /*
1434  * black-lists for probe_mask
1435  */
1436 static struct snd_pci_quirk probe_mask_list[] = {
1437 	/* Thinkpad often breaks the controller communication when accessing
1438 	 * to the non-working (or non-existing) modem codec slot.
1439 	 */
1440 	SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1441 	SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1442 	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1443 	/* broken BIOS */
1444 	SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1445 	/* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1446 	SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1447 	/* forced codec slots */
1448 	SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1449 	SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1450 	/* WinFast VP200 H (Teradici) user reported broken communication */
1451 	SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1452 	{}
1453 };
1454 
1455 #define AZX_FORCE_CODEC_MASK	0x100
1456 
1457 static void check_probe_mask(struct azx *chip, int dev)
1458 {
1459 	const struct snd_pci_quirk *q;
1460 
1461 	chip->codec_probe_mask = probe_mask[dev];
1462 	if (chip->codec_probe_mask == -1) {
1463 		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1464 		if (q) {
1465 			dev_info(chip->card->dev,
1466 				 "probe_mask set to 0x%x for device %04x:%04x\n",
1467 				 q->value, q->subvendor, q->subdevice);
1468 			chip->codec_probe_mask = q->value;
1469 		}
1470 	}
1471 
1472 	/* check forced option */
1473 	if (chip->codec_probe_mask != -1 &&
1474 	    (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1475 		azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
1476 		dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1477 			 (int)azx_bus(chip)->codec_mask);
1478 	}
1479 }
1480 
1481 /*
1482  * white/black-list for enable_msi
1483  */
1484 static struct snd_pci_quirk msi_black_list[] = {
1485 	SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1486 	SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1487 	SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1488 	SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1489 	SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1490 	SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1491 	SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1492 	SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1493 	SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1494 	SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1495 	{}
1496 };
1497 
1498 static void check_msi(struct azx *chip)
1499 {
1500 	const struct snd_pci_quirk *q;
1501 
1502 	if (enable_msi >= 0) {
1503 		chip->msi = !!enable_msi;
1504 		return;
1505 	}
1506 	chip->msi = 1;	/* enable MSI as default */
1507 	q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
1508 	if (q) {
1509 		dev_info(chip->card->dev,
1510 			 "msi for device %04x:%04x set to %d\n",
1511 			 q->subvendor, q->subdevice, q->value);
1512 		chip->msi = q->value;
1513 		return;
1514 	}
1515 
1516 	/* NVidia chipsets seem to cause troubles with MSI */
1517 	if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1518 		dev_info(chip->card->dev, "Disabling MSI\n");
1519 		chip->msi = 0;
1520 	}
1521 }
1522 
1523 /* check the snoop mode availability */
1524 static void azx_check_snoop_available(struct azx *chip)
1525 {
1526 	int snoop = hda_snoop;
1527 
1528 	if (snoop >= 0) {
1529 		dev_info(chip->card->dev, "Force to %s mode by module option\n",
1530 			 snoop ? "snoop" : "non-snoop");
1531 		chip->snoop = snoop;
1532 		return;
1533 	}
1534 
1535 	snoop = true;
1536 	if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
1537 	    chip->driver_type == AZX_DRIVER_VIA) {
1538 		/* force to non-snoop mode for a new VIA controller
1539 		 * when BIOS is set
1540 		 */
1541 		u8 val;
1542 		pci_read_config_byte(chip->pci, 0x42, &val);
1543 		if (!(val & 0x80) && chip->pci->revision == 0x30)
1544 			snoop = false;
1545 	}
1546 
1547 	if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
1548 		snoop = false;
1549 
1550 	chip->snoop = snoop;
1551 	if (!snoop)
1552 		dev_info(chip->card->dev, "Force to non-snoop mode\n");
1553 }
1554 
1555 static void azx_probe_work(struct work_struct *work)
1556 {
1557 	struct hda_intel *hda = container_of(work, struct hda_intel, probe_work);
1558 	azx_probe_continue(&hda->chip);
1559 }
1560 
1561 static int default_bdl_pos_adj(struct azx *chip)
1562 {
1563 	/* some exceptions: Atoms seem problematic with value 1 */
1564 	if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
1565 		switch (chip->pci->device) {
1566 		case 0x0f04: /* Baytrail */
1567 		case 0x2284: /* Braswell */
1568 			return 32;
1569 		}
1570 	}
1571 
1572 	switch (chip->driver_type) {
1573 	case AZX_DRIVER_ICH:
1574 	case AZX_DRIVER_PCH:
1575 		return 1;
1576 	default:
1577 		return 32;
1578 	}
1579 }
1580 
1581 /*
1582  * constructor
1583  */
1584 static const struct hdac_io_ops pci_hda_io_ops;
1585 static const struct hda_controller_ops pci_hda_ops;
1586 
1587 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1588 		      int dev, unsigned int driver_caps,
1589 		      struct azx **rchip)
1590 {
1591 	static struct snd_device_ops ops = {
1592 		.dev_disconnect = azx_dev_disconnect,
1593 		.dev_free = azx_dev_free,
1594 	};
1595 	struct hda_intel *hda;
1596 	struct azx *chip;
1597 	int err;
1598 
1599 	*rchip = NULL;
1600 
1601 	err = pci_enable_device(pci);
1602 	if (err < 0)
1603 		return err;
1604 
1605 	hda = kzalloc(sizeof(*hda), GFP_KERNEL);
1606 	if (!hda) {
1607 		pci_disable_device(pci);
1608 		return -ENOMEM;
1609 	}
1610 
1611 	chip = &hda->chip;
1612 	mutex_init(&chip->open_mutex);
1613 	chip->card = card;
1614 	chip->pci = pci;
1615 	chip->ops = &pci_hda_ops;
1616 	chip->driver_caps = driver_caps;
1617 	chip->driver_type = driver_caps & 0xff;
1618 	check_msi(chip);
1619 	chip->dev_index = dev;
1620 	chip->jackpoll_ms = jackpoll_ms;
1621 	INIT_LIST_HEAD(&chip->pcm_list);
1622 	INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1623 	INIT_LIST_HEAD(&hda->list);
1624 	init_vga_switcheroo(chip);
1625 	init_completion(&hda->probe_wait);
1626 
1627 	assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1628 
1629 	check_probe_mask(chip, dev);
1630 
1631 	chip->single_cmd = single_cmd;
1632 	azx_check_snoop_available(chip);
1633 
1634 	if (bdl_pos_adj[dev] < 0)
1635 		chip->bdl_pos_adj = default_bdl_pos_adj(chip);
1636 	else
1637 		chip->bdl_pos_adj = bdl_pos_adj[dev];
1638 
1639 	err = azx_bus_init(chip, model[dev], &pci_hda_io_ops);
1640 	if (err < 0) {
1641 		kfree(hda);
1642 		pci_disable_device(pci);
1643 		return err;
1644 	}
1645 
1646 	if (chip->driver_type == AZX_DRIVER_NVIDIA) {
1647 		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
1648 		chip->bus.needs_damn_long_delay = 1;
1649 	}
1650 
1651 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1652 	if (err < 0) {
1653 		dev_err(card->dev, "Error creating device [card]!\n");
1654 		azx_free(chip);
1655 		return err;
1656 	}
1657 
1658 	/* continue probing in work context as may trigger request module */
1659 	INIT_WORK(&hda->probe_work, azx_probe_work);
1660 
1661 	*rchip = chip;
1662 
1663 	return 0;
1664 }
1665 
1666 static int azx_first_init(struct azx *chip)
1667 {
1668 	int dev = chip->dev_index;
1669 	struct pci_dev *pci = chip->pci;
1670 	struct snd_card *card = chip->card;
1671 	struct hdac_bus *bus = azx_bus(chip);
1672 	int err;
1673 	unsigned short gcap;
1674 	unsigned int dma_bits = 64;
1675 
1676 #if BITS_PER_LONG != 64
1677 	/* Fix up base address on ULI M5461 */
1678 	if (chip->driver_type == AZX_DRIVER_ULI) {
1679 		u16 tmp3;
1680 		pci_read_config_word(pci, 0x40, &tmp3);
1681 		pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1682 		pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1683 	}
1684 #endif
1685 
1686 	err = pci_request_regions(pci, "ICH HD audio");
1687 	if (err < 0)
1688 		return err;
1689 	chip->region_requested = 1;
1690 
1691 	bus->addr = pci_resource_start(pci, 0);
1692 	bus->remap_addr = pci_ioremap_bar(pci, 0);
1693 	if (bus->remap_addr == NULL) {
1694 		dev_err(card->dev, "ioremap error\n");
1695 		return -ENXIO;
1696 	}
1697 
1698 	if (chip->msi) {
1699 		if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
1700 			dev_dbg(card->dev, "Disabling 64bit MSI\n");
1701 			pci->no_64bit_msi = true;
1702 		}
1703 		if (pci_enable_msi(pci) < 0)
1704 			chip->msi = 0;
1705 	}
1706 
1707 	if (azx_acquire_irq(chip, 0) < 0)
1708 		return -EBUSY;
1709 
1710 	pci_set_master(pci);
1711 	synchronize_irq(bus->irq);
1712 
1713 	gcap = azx_readw(chip, GCAP);
1714 	dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1715 
1716 	/* AMD devices support 40 or 48bit DMA, take the safe one */
1717 	if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
1718 		dma_bits = 40;
1719 
1720 	/* disable SB600 64bit support for safety */
1721 	if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1722 		struct pci_dev *p_smbus;
1723 		dma_bits = 40;
1724 		p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1725 					 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1726 					 NULL);
1727 		if (p_smbus) {
1728 			if (p_smbus->revision < 0x30)
1729 				gcap &= ~AZX_GCAP_64OK;
1730 			pci_dev_put(p_smbus);
1731 		}
1732 	}
1733 
1734 	/* disable 64bit DMA address on some devices */
1735 	if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1736 		dev_dbg(card->dev, "Disabling 64bit DMA\n");
1737 		gcap &= ~AZX_GCAP_64OK;
1738 	}
1739 
1740 	/* disable buffer size rounding to 128-byte multiples if supported */
1741 	if (align_buffer_size >= 0)
1742 		chip->align_buffer_size = !!align_buffer_size;
1743 	else {
1744 		if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
1745 			chip->align_buffer_size = 0;
1746 		else
1747 			chip->align_buffer_size = 1;
1748 	}
1749 
1750 	/* allow 64bit DMA address if supported by H/W */
1751 	if (!(gcap & AZX_GCAP_64OK))
1752 		dma_bits = 32;
1753 	if (!dma_set_mask(&pci->dev, DMA_BIT_MASK(dma_bits))) {
1754 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(dma_bits));
1755 	} else {
1756 		dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
1757 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32));
1758 	}
1759 
1760 	/* read number of streams from GCAP register instead of using
1761 	 * hardcoded value
1762 	 */
1763 	chip->capture_streams = (gcap >> 8) & 0x0f;
1764 	chip->playback_streams = (gcap >> 12) & 0x0f;
1765 	if (!chip->playback_streams && !chip->capture_streams) {
1766 		/* gcap didn't give any info, switching to old method */
1767 
1768 		switch (chip->driver_type) {
1769 		case AZX_DRIVER_ULI:
1770 			chip->playback_streams = ULI_NUM_PLAYBACK;
1771 			chip->capture_streams = ULI_NUM_CAPTURE;
1772 			break;
1773 		case AZX_DRIVER_ATIHDMI:
1774 		case AZX_DRIVER_ATIHDMI_NS:
1775 			chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1776 			chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1777 			break;
1778 		case AZX_DRIVER_GENERIC:
1779 		default:
1780 			chip->playback_streams = ICH6_NUM_PLAYBACK;
1781 			chip->capture_streams = ICH6_NUM_CAPTURE;
1782 			break;
1783 		}
1784 	}
1785 	chip->capture_index_offset = 0;
1786 	chip->playback_index_offset = chip->capture_streams;
1787 	chip->num_streams = chip->playback_streams + chip->capture_streams;
1788 
1789 	/* initialize streams */
1790 	err = azx_init_streams(chip);
1791 	if (err < 0)
1792 		return err;
1793 
1794 	err = azx_alloc_stream_pages(chip);
1795 	if (err < 0)
1796 		return err;
1797 
1798 	/* initialize chip */
1799 	azx_init_pci(chip);
1800 
1801 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1802 		struct hda_intel *hda;
1803 
1804 		hda = container_of(chip, struct hda_intel, chip);
1805 		haswell_set_bclk(hda);
1806 	}
1807 
1808 	hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
1809 
1810 	/* codec detection */
1811 	if (!azx_bus(chip)->codec_mask) {
1812 		dev_err(card->dev, "no codecs found!\n");
1813 		return -ENODEV;
1814 	}
1815 
1816 	strcpy(card->driver, "HDA-Intel");
1817 	strlcpy(card->shortname, driver_short_names[chip->driver_type],
1818 		sizeof(card->shortname));
1819 	snprintf(card->longname, sizeof(card->longname),
1820 		 "%s at 0x%lx irq %i",
1821 		 card->shortname, bus->addr, bus->irq);
1822 
1823 	return 0;
1824 }
1825 
1826 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1827 /* callback from request_firmware_nowait() */
1828 static void azx_firmware_cb(const struct firmware *fw, void *context)
1829 {
1830 	struct snd_card *card = context;
1831 	struct azx *chip = card->private_data;
1832 	struct pci_dev *pci = chip->pci;
1833 
1834 	if (!fw) {
1835 		dev_err(card->dev, "Cannot load firmware, aborting\n");
1836 		goto error;
1837 	}
1838 
1839 	chip->fw = fw;
1840 	if (!chip->disabled) {
1841 		/* continue probing */
1842 		if (azx_probe_continue(chip))
1843 			goto error;
1844 	}
1845 	return; /* OK */
1846 
1847  error:
1848 	snd_card_free(card);
1849 	pci_set_drvdata(pci, NULL);
1850 }
1851 #endif
1852 
1853 /*
1854  * HDA controller ops.
1855  */
1856 
1857 /* PCI register access. */
1858 static void pci_azx_writel(u32 value, u32 __iomem *addr)
1859 {
1860 	writel(value, addr);
1861 }
1862 
1863 static u32 pci_azx_readl(u32 __iomem *addr)
1864 {
1865 	return readl(addr);
1866 }
1867 
1868 static void pci_azx_writew(u16 value, u16 __iomem *addr)
1869 {
1870 	writew(value, addr);
1871 }
1872 
1873 static u16 pci_azx_readw(u16 __iomem *addr)
1874 {
1875 	return readw(addr);
1876 }
1877 
1878 static void pci_azx_writeb(u8 value, u8 __iomem *addr)
1879 {
1880 	writeb(value, addr);
1881 }
1882 
1883 static u8 pci_azx_readb(u8 __iomem *addr)
1884 {
1885 	return readb(addr);
1886 }
1887 
1888 static int disable_msi_reset_irq(struct azx *chip)
1889 {
1890 	struct hdac_bus *bus = azx_bus(chip);
1891 	int err;
1892 
1893 	free_irq(bus->irq, chip);
1894 	bus->irq = -1;
1895 	pci_disable_msi(chip->pci);
1896 	chip->msi = 0;
1897 	err = azx_acquire_irq(chip, 1);
1898 	if (err < 0)
1899 		return err;
1900 
1901 	return 0;
1902 }
1903 
1904 /* DMA page allocation helpers.  */
1905 static int dma_alloc_pages(struct hdac_bus *bus,
1906 			   int type,
1907 			   size_t size,
1908 			   struct snd_dma_buffer *buf)
1909 {
1910 	struct azx *chip = bus_to_azx(bus);
1911 	int err;
1912 
1913 	err = snd_dma_alloc_pages(type,
1914 				  bus->dev,
1915 				  size, buf);
1916 	if (err < 0)
1917 		return err;
1918 	mark_pages_wc(chip, buf, true);
1919 	return 0;
1920 }
1921 
1922 static void dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf)
1923 {
1924 	struct azx *chip = bus_to_azx(bus);
1925 
1926 	mark_pages_wc(chip, buf, false);
1927 	snd_dma_free_pages(buf);
1928 }
1929 
1930 static int substream_alloc_pages(struct azx *chip,
1931 				 struct snd_pcm_substream *substream,
1932 				 size_t size)
1933 {
1934 	struct azx_dev *azx_dev = get_azx_dev(substream);
1935 	int ret;
1936 
1937 	mark_runtime_wc(chip, azx_dev, substream, false);
1938 	ret = snd_pcm_lib_malloc_pages(substream, size);
1939 	if (ret < 0)
1940 		return ret;
1941 	mark_runtime_wc(chip, azx_dev, substream, true);
1942 	return 0;
1943 }
1944 
1945 static int substream_free_pages(struct azx *chip,
1946 				struct snd_pcm_substream *substream)
1947 {
1948 	struct azx_dev *azx_dev = get_azx_dev(substream);
1949 	mark_runtime_wc(chip, azx_dev, substream, false);
1950 	return snd_pcm_lib_free_pages(substream);
1951 }
1952 
1953 static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
1954 			     struct vm_area_struct *area)
1955 {
1956 #ifdef CONFIG_X86
1957 	struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1958 	struct azx *chip = apcm->chip;
1959 	if (!azx_snoop(chip) && chip->driver_type != AZX_DRIVER_CMEDIA)
1960 		area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
1961 #endif
1962 }
1963 
1964 static const struct hdac_io_ops pci_hda_io_ops = {
1965 	.reg_writel = pci_azx_writel,
1966 	.reg_readl = pci_azx_readl,
1967 	.reg_writew = pci_azx_writew,
1968 	.reg_readw = pci_azx_readw,
1969 	.reg_writeb = pci_azx_writeb,
1970 	.reg_readb = pci_azx_readb,
1971 	.dma_alloc_pages = dma_alloc_pages,
1972 	.dma_free_pages = dma_free_pages,
1973 };
1974 
1975 static const struct hda_controller_ops pci_hda_ops = {
1976 	.disable_msi_reset_irq = disable_msi_reset_irq,
1977 	.substream_alloc_pages = substream_alloc_pages,
1978 	.substream_free_pages = substream_free_pages,
1979 	.pcm_mmap_prepare = pcm_mmap_prepare,
1980 	.position_check = azx_position_check,
1981 	.link_power = azx_intel_link_power,
1982 };
1983 
1984 static int azx_probe(struct pci_dev *pci,
1985 		     const struct pci_device_id *pci_id)
1986 {
1987 	static int dev;
1988 	struct snd_card *card;
1989 	struct hda_intel *hda;
1990 	struct azx *chip;
1991 	bool schedule_probe;
1992 	int err;
1993 
1994 	if (dev >= SNDRV_CARDS)
1995 		return -ENODEV;
1996 	if (!enable[dev]) {
1997 		dev++;
1998 		return -ENOENT;
1999 	}
2000 
2001 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2002 			   0, &card);
2003 	if (err < 0) {
2004 		dev_err(&pci->dev, "Error creating card!\n");
2005 		return err;
2006 	}
2007 
2008 	err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
2009 	if (err < 0)
2010 		goto out_free;
2011 	card->private_data = chip;
2012 	hda = container_of(chip, struct hda_intel, chip);
2013 
2014 	pci_set_drvdata(pci, card);
2015 
2016 	err = register_vga_switcheroo(chip);
2017 	if (err < 0) {
2018 		dev_err(card->dev, "Error registering vga_switcheroo client\n");
2019 		goto out_free;
2020 	}
2021 
2022 	if (check_hdmi_disabled(pci)) {
2023 		dev_info(card->dev, "VGA controller is disabled\n");
2024 		dev_info(card->dev, "Delaying initialization\n");
2025 		chip->disabled = true;
2026 	}
2027 
2028 	schedule_probe = !chip->disabled;
2029 
2030 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2031 	if (patch[dev] && *patch[dev]) {
2032 		dev_info(card->dev, "Applying patch firmware '%s'\n",
2033 			 patch[dev]);
2034 		err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
2035 					      &pci->dev, GFP_KERNEL, card,
2036 					      azx_firmware_cb);
2037 		if (err < 0)
2038 			goto out_free;
2039 		schedule_probe = false; /* continued in azx_firmware_cb() */
2040 	}
2041 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
2042 
2043 #ifndef CONFIG_SND_HDA_I915
2044 	if (CONTROLLER_IN_GPU(pci))
2045 		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
2046 #endif
2047 
2048 	if (schedule_probe)
2049 		schedule_work(&hda->probe_work);
2050 
2051 	dev++;
2052 	if (chip->disabled)
2053 		complete_all(&hda->probe_wait);
2054 	return 0;
2055 
2056 out_free:
2057 	snd_card_free(card);
2058 	return err;
2059 }
2060 
2061 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
2062 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
2063 	[AZX_DRIVER_NVIDIA] = 8,
2064 	[AZX_DRIVER_TERA] = 1,
2065 };
2066 
2067 static int azx_probe_continue(struct azx *chip)
2068 {
2069 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
2070 	struct hdac_bus *bus = azx_bus(chip);
2071 	struct pci_dev *pci = chip->pci;
2072 	int dev = chip->dev_index;
2073 	int err;
2074 
2075 	hda->probe_continued = 1;
2076 
2077 	/* Request display power well for the HDA controller or codec. For
2078 	 * Haswell/Broadwell, both the display HDA controller and codec need
2079 	 * this power. For other platforms, like Baytrail/Braswell, only the
2080 	 * display codec needs the power and it can be released after probe.
2081 	 */
2082 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
2083 		/* HSW/BDW controllers need this power */
2084 		if (CONTROLLER_IN_GPU(pci))
2085 			hda->need_i915_power = 1;
2086 
2087 		err = snd_hdac_i915_init(bus);
2088 		if (err < 0) {
2089 			/* if the controller is bound only with HDMI/DP
2090 			 * (for HSW and BDW), we need to abort the probe;
2091 			 * for other chips, still continue probing as other
2092 			 * codecs can be on the same link.
2093 			 */
2094 			if (CONTROLLER_IN_GPU(pci)) {
2095 				dev_err(chip->card->dev,
2096 					"HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
2097 				goto out_free;
2098 			} else
2099 				goto skip_i915;
2100 		}
2101 
2102 		err = snd_hdac_display_power(bus, true);
2103 		if (err < 0) {
2104 			dev_err(chip->card->dev,
2105 				"Cannot turn on display power on i915\n");
2106 			goto i915_power_fail;
2107 		}
2108 	}
2109 
2110  skip_i915:
2111 	err = azx_first_init(chip);
2112 	if (err < 0)
2113 		goto out_free;
2114 
2115 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2116 	chip->beep_mode = beep_mode[dev];
2117 #endif
2118 
2119 	/* create codec instances */
2120 	err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
2121 	if (err < 0)
2122 		goto out_free;
2123 
2124 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2125 	if (chip->fw) {
2126 		err = snd_hda_load_patch(&chip->bus, chip->fw->size,
2127 					 chip->fw->data);
2128 		if (err < 0)
2129 			goto out_free;
2130 #ifndef CONFIG_PM
2131 		release_firmware(chip->fw); /* no longer needed */
2132 		chip->fw = NULL;
2133 #endif
2134 	}
2135 #endif
2136 	if ((probe_only[dev] & 1) == 0) {
2137 		err = azx_codec_configure(chip);
2138 		if (err < 0)
2139 			goto out_free;
2140 	}
2141 
2142 	err = snd_card_register(chip->card);
2143 	if (err < 0)
2144 		goto out_free;
2145 
2146 	chip->running = 1;
2147 	azx_add_card_list(chip);
2148 	snd_hda_set_power_save(&chip->bus, power_save * 1000);
2149 	if (azx_has_pm_runtime(chip) || hda->use_vga_switcheroo)
2150 		pm_runtime_put_noidle(&pci->dev);
2151 
2152 out_free:
2153 	if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL
2154 		&& !hda->need_i915_power)
2155 		snd_hdac_display_power(bus, false);
2156 
2157 i915_power_fail:
2158 	if (err < 0)
2159 		hda->init_failed = 1;
2160 	complete_all(&hda->probe_wait);
2161 	return err;
2162 }
2163 
2164 static void azx_remove(struct pci_dev *pci)
2165 {
2166 	struct snd_card *card = pci_get_drvdata(pci);
2167 	struct azx *chip;
2168 	struct hda_intel *hda;
2169 
2170 	if (card) {
2171 		/* flush the pending probing work */
2172 		chip = card->private_data;
2173 		hda = container_of(chip, struct hda_intel, chip);
2174 		flush_work(&hda->probe_work);
2175 
2176 		snd_card_free(card);
2177 	}
2178 }
2179 
2180 static void azx_shutdown(struct pci_dev *pci)
2181 {
2182 	struct snd_card *card = pci_get_drvdata(pci);
2183 	struct azx *chip;
2184 
2185 	if (!card)
2186 		return;
2187 	chip = card->private_data;
2188 	if (chip && chip->running)
2189 		azx_stop_chip(chip);
2190 }
2191 
2192 /* PCI IDs */
2193 static const struct pci_device_id azx_ids[] = {
2194 	/* CPT */
2195 	{ PCI_DEVICE(0x8086, 0x1c20),
2196 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2197 	/* PBG */
2198 	{ PCI_DEVICE(0x8086, 0x1d20),
2199 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2200 	/* Panther Point */
2201 	{ PCI_DEVICE(0x8086, 0x1e20),
2202 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2203 	/* Lynx Point */
2204 	{ PCI_DEVICE(0x8086, 0x8c20),
2205 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2206 	/* 9 Series */
2207 	{ PCI_DEVICE(0x8086, 0x8ca0),
2208 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2209 	/* Wellsburg */
2210 	{ PCI_DEVICE(0x8086, 0x8d20),
2211 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2212 	{ PCI_DEVICE(0x8086, 0x8d21),
2213 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2214 	/* Lewisburg */
2215 	{ PCI_DEVICE(0x8086, 0xa1f0),
2216 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2217 	{ PCI_DEVICE(0x8086, 0xa270),
2218 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2219 	/* Lynx Point-LP */
2220 	{ PCI_DEVICE(0x8086, 0x9c20),
2221 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2222 	/* Lynx Point-LP */
2223 	{ PCI_DEVICE(0x8086, 0x9c21),
2224 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2225 	/* Wildcat Point-LP */
2226 	{ PCI_DEVICE(0x8086, 0x9ca0),
2227 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2228 	/* Sunrise Point */
2229 	{ PCI_DEVICE(0x8086, 0xa170),
2230 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2231 	/* Sunrise Point-LP */
2232 	{ PCI_DEVICE(0x8086, 0x9d70),
2233 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2234 	/* Broxton-P(Apollolake) */
2235 	{ PCI_DEVICE(0x8086, 0x5a98),
2236 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BROXTON },
2237 	/* Haswell */
2238 	{ PCI_DEVICE(0x8086, 0x0a0c),
2239 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2240 	{ PCI_DEVICE(0x8086, 0x0c0c),
2241 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2242 	{ PCI_DEVICE(0x8086, 0x0d0c),
2243 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2244 	/* Broadwell */
2245 	{ PCI_DEVICE(0x8086, 0x160c),
2246 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL },
2247 	/* 5 Series/3400 */
2248 	{ PCI_DEVICE(0x8086, 0x3b56),
2249 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2250 	/* Poulsbo */
2251 	{ PCI_DEVICE(0x8086, 0x811b),
2252 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2253 	/* Oaktrail */
2254 	{ PCI_DEVICE(0x8086, 0x080a),
2255 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2256 	/* BayTrail */
2257 	{ PCI_DEVICE(0x8086, 0x0f04),
2258 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL },
2259 	/* Braswell */
2260 	{ PCI_DEVICE(0x8086, 0x2284),
2261 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL },
2262 	/* ICH6 */
2263 	{ PCI_DEVICE(0x8086, 0x2668),
2264 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2265 	/* ICH7 */
2266 	{ PCI_DEVICE(0x8086, 0x27d8),
2267 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2268 	/* ESB2 */
2269 	{ PCI_DEVICE(0x8086, 0x269a),
2270 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2271 	/* ICH8 */
2272 	{ PCI_DEVICE(0x8086, 0x284b),
2273 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2274 	/* ICH9 */
2275 	{ PCI_DEVICE(0x8086, 0x293e),
2276 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2277 	/* ICH9 */
2278 	{ PCI_DEVICE(0x8086, 0x293f),
2279 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2280 	/* ICH10 */
2281 	{ PCI_DEVICE(0x8086, 0x3a3e),
2282 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2283 	/* ICH10 */
2284 	{ PCI_DEVICE(0x8086, 0x3a6e),
2285 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2286 	/* Generic Intel */
2287 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2288 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2289 	  .class_mask = 0xffffff,
2290 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
2291 	/* ATI SB 450/600/700/800/900 */
2292 	{ PCI_DEVICE(0x1002, 0x437b),
2293 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2294 	{ PCI_DEVICE(0x1002, 0x4383),
2295 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2296 	/* AMD Hudson */
2297 	{ PCI_DEVICE(0x1022, 0x780d),
2298 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2299 	/* ATI HDMI */
2300 	{ PCI_DEVICE(0x1002, 0x1308),
2301 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2302 	{ PCI_DEVICE(0x1002, 0x157a),
2303 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2304 	{ PCI_DEVICE(0x1002, 0x793b),
2305 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2306 	{ PCI_DEVICE(0x1002, 0x7919),
2307 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2308 	{ PCI_DEVICE(0x1002, 0x960f),
2309 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2310 	{ PCI_DEVICE(0x1002, 0x970f),
2311 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2312 	{ PCI_DEVICE(0x1002, 0x9840),
2313 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2314 	{ PCI_DEVICE(0x1002, 0xaa00),
2315 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2316 	{ PCI_DEVICE(0x1002, 0xaa08),
2317 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2318 	{ PCI_DEVICE(0x1002, 0xaa10),
2319 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2320 	{ PCI_DEVICE(0x1002, 0xaa18),
2321 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2322 	{ PCI_DEVICE(0x1002, 0xaa20),
2323 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2324 	{ PCI_DEVICE(0x1002, 0xaa28),
2325 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2326 	{ PCI_DEVICE(0x1002, 0xaa30),
2327 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2328 	{ PCI_DEVICE(0x1002, 0xaa38),
2329 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2330 	{ PCI_DEVICE(0x1002, 0xaa40),
2331 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2332 	{ PCI_DEVICE(0x1002, 0xaa48),
2333 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2334 	{ PCI_DEVICE(0x1002, 0xaa50),
2335 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2336 	{ PCI_DEVICE(0x1002, 0xaa58),
2337 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2338 	{ PCI_DEVICE(0x1002, 0xaa60),
2339 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2340 	{ PCI_DEVICE(0x1002, 0xaa68),
2341 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2342 	{ PCI_DEVICE(0x1002, 0xaa80),
2343 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2344 	{ PCI_DEVICE(0x1002, 0xaa88),
2345 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2346 	{ PCI_DEVICE(0x1002, 0xaa90),
2347 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2348 	{ PCI_DEVICE(0x1002, 0xaa98),
2349 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2350 	{ PCI_DEVICE(0x1002, 0x9902),
2351 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2352 	{ PCI_DEVICE(0x1002, 0xaaa0),
2353 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2354 	{ PCI_DEVICE(0x1002, 0xaaa8),
2355 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2356 	{ PCI_DEVICE(0x1002, 0xaab0),
2357 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2358 	{ PCI_DEVICE(0x1002, 0xaac0),
2359 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2360 	{ PCI_DEVICE(0x1002, 0xaac8),
2361 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2362 	{ PCI_DEVICE(0x1002, 0xaad8),
2363 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2364 	{ PCI_DEVICE(0x1002, 0xaae8),
2365 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2366 	/* VIA VT8251/VT8237A */
2367 	{ PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2368 	/* VIA GFX VT7122/VX900 */
2369 	{ PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2370 	/* VIA GFX VT6122/VX11 */
2371 	{ PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2372 	/* SIS966 */
2373 	{ PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2374 	/* ULI M5461 */
2375 	{ PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2376 	/* NVIDIA MCP */
2377 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2378 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2379 	  .class_mask = 0xffffff,
2380 	  .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2381 	/* Teradici */
2382 	{ PCI_DEVICE(0x6549, 0x1200),
2383 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2384 	{ PCI_DEVICE(0x6549, 0x2200),
2385 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2386 	/* Creative X-Fi (CA0110-IBG) */
2387 	/* CTHDA chips */
2388 	{ PCI_DEVICE(0x1102, 0x0010),
2389 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2390 	{ PCI_DEVICE(0x1102, 0x0012),
2391 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2392 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2393 	/* the following entry conflicts with snd-ctxfi driver,
2394 	 * as ctxfi driver mutates from HD-audio to native mode with
2395 	 * a special command sequence.
2396 	 */
2397 	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2398 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2399 	  .class_mask = 0xffffff,
2400 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2401 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2402 #else
2403 	/* this entry seems still valid -- i.e. without emu20kx chip */
2404 	{ PCI_DEVICE(0x1102, 0x0009),
2405 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2406 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2407 #endif
2408 	/* CM8888 */
2409 	{ PCI_DEVICE(0x13f6, 0x5011),
2410 	  .driver_data = AZX_DRIVER_CMEDIA |
2411 	  AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
2412 	/* Vortex86MX */
2413 	{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2414 	/* VMware HDAudio */
2415 	{ PCI_DEVICE(0x15ad, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2416 	/* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2417 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2418 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2419 	  .class_mask = 0xffffff,
2420 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2421 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2422 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2423 	  .class_mask = 0xffffff,
2424 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2425 	{ 0, }
2426 };
2427 MODULE_DEVICE_TABLE(pci, azx_ids);
2428 
2429 /* pci_driver definition */
2430 static struct pci_driver azx_driver = {
2431 	.name = KBUILD_MODNAME,
2432 	.id_table = azx_ids,
2433 	.probe = azx_probe,
2434 	.remove = azx_remove,
2435 	.shutdown = azx_shutdown,
2436 	.driver = {
2437 		.pm = AZX_PM_OPS,
2438 	},
2439 };
2440 
2441 module_pci_driver(azx_driver);
2442