xref: /openbmc/linux/sound/pci/hda/hda_intel.c (revision 3d37ef41)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *
4  *  hda_intel.c - Implementation of primary alsa driver code base
5  *                for Intel HD Audio.
6  *
7  *  Copyright(c) 2004 Intel Corporation. All rights reserved.
8  *
9  *  Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
10  *                     PeiSen Hou <pshou@realtek.com.tw>
11  *
12  *  CONTACTS:
13  *
14  *  Matt Jared		matt.jared@intel.com
15  *  Andy Kopp		andy.kopp@intel.com
16  *  Dan Kogan		dan.d.kogan@intel.com
17  *
18  *  CHANGES:
19  *
20  *  2004.12.01	Major rewrite by tiwai, merged the work of pshou
21  */
22 
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/dma-mapping.h>
28 #include <linux/moduleparam.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/pci.h>
32 #include <linux/mutex.h>
33 #include <linux/io.h>
34 #include <linux/pm_runtime.h>
35 #include <linux/clocksource.h>
36 #include <linux/time.h>
37 #include <linux/completion.h>
38 #include <linux/acpi.h>
39 #include <linux/pgtable.h>
40 
41 #ifdef CONFIG_X86
42 /* for snoop control */
43 #include <asm/set_memory.h>
44 #include <asm/cpufeature.h>
45 #endif
46 #include <sound/core.h>
47 #include <sound/initval.h>
48 #include <sound/hdaudio.h>
49 #include <sound/hda_i915.h>
50 #include <sound/intel-dsp-config.h>
51 #include <linux/vgaarb.h>
52 #include <linux/vga_switcheroo.h>
53 #include <linux/firmware.h>
54 #include <sound/hda_codec.h>
55 #include "hda_controller.h"
56 #include "hda_intel.h"
57 
58 #define CREATE_TRACE_POINTS
59 #include "hda_intel_trace.h"
60 
61 /* position fix mode */
62 enum {
63 	POS_FIX_AUTO,
64 	POS_FIX_LPIB,
65 	POS_FIX_POSBUF,
66 	POS_FIX_VIACOMBO,
67 	POS_FIX_COMBO,
68 	POS_FIX_SKL,
69 	POS_FIX_FIFO,
70 };
71 
72 /* Defines for ATI HD Audio support in SB450 south bridge */
73 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
74 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
75 
76 /* Defines for Nvidia HDA support */
77 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
78 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
79 #define NVIDIA_HDA_ISTRM_COH          0x4d
80 #define NVIDIA_HDA_OSTRM_COH          0x4c
81 #define NVIDIA_HDA_ENABLE_COHBIT      0x01
82 
83 /* Defines for Intel SCH HDA snoop control */
84 #define INTEL_HDA_CGCTL	 0x48
85 #define INTEL_HDA_CGCTL_MISCBDCGE        (0x1 << 6)
86 #define INTEL_SCH_HDA_DEVC      0x78
87 #define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
88 
89 /* Define VIA HD Audio Device ID*/
90 #define VIA_HDAC_DEVICE_ID		0x3288
91 
92 /* max number of SDs */
93 /* ICH, ATI and VIA have 4 playback and 4 capture */
94 #define ICH6_NUM_CAPTURE	4
95 #define ICH6_NUM_PLAYBACK	4
96 
97 /* ULI has 6 playback and 5 capture */
98 #define ULI_NUM_CAPTURE		5
99 #define ULI_NUM_PLAYBACK	6
100 
101 /* ATI HDMI may have up to 8 playbacks and 0 capture */
102 #define ATIHDMI_NUM_CAPTURE	0
103 #define ATIHDMI_NUM_PLAYBACK	8
104 
105 /* TERA has 4 playback and 3 capture */
106 #define TERA_NUM_CAPTURE	3
107 #define TERA_NUM_PLAYBACK	4
108 
109 
110 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
111 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
112 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
113 static char *model[SNDRV_CARDS];
114 static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
115 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
116 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
117 static int probe_only[SNDRV_CARDS];
118 static int jackpoll_ms[SNDRV_CARDS];
119 static int single_cmd = -1;
120 static int enable_msi = -1;
121 #ifdef CONFIG_SND_HDA_PATCH_LOADER
122 static char *patch[SNDRV_CARDS];
123 #endif
124 #ifdef CONFIG_SND_HDA_INPUT_BEEP
125 static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
126 					CONFIG_SND_HDA_INPUT_BEEP_MODE};
127 #endif
128 static bool dmic_detect = 1;
129 
130 module_param_array(index, int, NULL, 0444);
131 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
132 module_param_array(id, charp, NULL, 0444);
133 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
134 module_param_array(enable, bool, NULL, 0444);
135 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
136 module_param_array(model, charp, NULL, 0444);
137 MODULE_PARM_DESC(model, "Use the given board model.");
138 module_param_array(position_fix, int, NULL, 0444);
139 MODULE_PARM_DESC(position_fix, "DMA pointer read method."
140 		 "(-1 = system default, 0 = auto, 1 = LPIB, 2 = POSBUF, 3 = VIACOMBO, 4 = COMBO, 5 = SKL+, 6 = FIFO).");
141 module_param_array(bdl_pos_adj, int, NULL, 0644);
142 MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
143 module_param_array(probe_mask, int, NULL, 0444);
144 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
145 module_param_array(probe_only, int, NULL, 0444);
146 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
147 module_param_array(jackpoll_ms, int, NULL, 0444);
148 MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
149 module_param(single_cmd, bint, 0444);
150 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
151 		 "(for debugging only).");
152 module_param(enable_msi, bint, 0444);
153 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
154 #ifdef CONFIG_SND_HDA_PATCH_LOADER
155 module_param_array(patch, charp, NULL, 0444);
156 MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
157 #endif
158 #ifdef CONFIG_SND_HDA_INPUT_BEEP
159 module_param_array(beep_mode, bool, NULL, 0444);
160 MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
161 			    "(0=off, 1=on) (default=1).");
162 #endif
163 module_param(dmic_detect, bool, 0444);
164 MODULE_PARM_DESC(dmic_detect, "Allow DSP driver selection (bypass this driver) "
165 			     "(0=off, 1=on) (default=1); "
166 		 "deprecated, use snd-intel-dspcfg.dsp_driver option instead");
167 
168 #ifdef CONFIG_PM
169 static int param_set_xint(const char *val, const struct kernel_param *kp);
170 static const struct kernel_param_ops param_ops_xint = {
171 	.set = param_set_xint,
172 	.get = param_get_int,
173 };
174 #define param_check_xint param_check_int
175 
176 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
177 module_param(power_save, xint, 0644);
178 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
179 		 "(in second, 0 = disable).");
180 
181 static bool pm_blacklist = true;
182 module_param(pm_blacklist, bool, 0644);
183 MODULE_PARM_DESC(pm_blacklist, "Enable power-management denylist");
184 
185 /* reset the HD-audio controller in power save mode.
186  * this may give more power-saving, but will take longer time to
187  * wake up.
188  */
189 static bool power_save_controller = 1;
190 module_param(power_save_controller, bool, 0644);
191 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
192 #else
193 #define power_save	0
194 #endif /* CONFIG_PM */
195 
196 static int align_buffer_size = -1;
197 module_param(align_buffer_size, bint, 0644);
198 MODULE_PARM_DESC(align_buffer_size,
199 		"Force buffer and period sizes to be multiple of 128 bytes.");
200 
201 #ifdef CONFIG_X86
202 static int hda_snoop = -1;
203 module_param_named(snoop, hda_snoop, bint, 0444);
204 MODULE_PARM_DESC(snoop, "Enable/disable snooping");
205 #else
206 #define hda_snoop		true
207 #endif
208 
209 
210 MODULE_LICENSE("GPL");
211 MODULE_DESCRIPTION("Intel HDA driver");
212 
213 #if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
214 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
215 #define SUPPORT_VGA_SWITCHEROO
216 #endif
217 #endif
218 
219 
220 /*
221  */
222 
223 /* driver types */
224 enum {
225 	AZX_DRIVER_ICH,
226 	AZX_DRIVER_PCH,
227 	AZX_DRIVER_SCH,
228 	AZX_DRIVER_SKL,
229 	AZX_DRIVER_HDMI,
230 	AZX_DRIVER_ATI,
231 	AZX_DRIVER_ATIHDMI,
232 	AZX_DRIVER_ATIHDMI_NS,
233 	AZX_DRIVER_VIA,
234 	AZX_DRIVER_SIS,
235 	AZX_DRIVER_ULI,
236 	AZX_DRIVER_NVIDIA,
237 	AZX_DRIVER_TERA,
238 	AZX_DRIVER_CTX,
239 	AZX_DRIVER_CTHDA,
240 	AZX_DRIVER_CMEDIA,
241 	AZX_DRIVER_ZHAOXIN,
242 	AZX_DRIVER_GENERIC,
243 	AZX_NUM_DRIVERS, /* keep this as last entry */
244 };
245 
246 #define azx_get_snoop_type(chip) \
247 	(((chip)->driver_caps & AZX_DCAPS_SNOOP_MASK) >> 10)
248 #define AZX_DCAPS_SNOOP_TYPE(type) ((AZX_SNOOP_TYPE_ ## type) << 10)
249 
250 /* quirks for old Intel chipsets */
251 #define AZX_DCAPS_INTEL_ICH \
252 	(AZX_DCAPS_OLD_SSYNC | AZX_DCAPS_NO_ALIGN_BUFSIZE)
253 
254 /* quirks for Intel PCH */
255 #define AZX_DCAPS_INTEL_PCH_BASE \
256 	(AZX_DCAPS_NO_ALIGN_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
257 	 AZX_DCAPS_SNOOP_TYPE(SCH))
258 
259 /* PCH up to IVB; no runtime PM; bind with i915 gfx */
260 #define AZX_DCAPS_INTEL_PCH_NOPM \
261 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
262 
263 /* PCH for HSW/BDW; with runtime PM */
264 /* no i915 binding for this as HSW/BDW has another controller for HDMI */
265 #define AZX_DCAPS_INTEL_PCH \
266 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME)
267 
268 /* HSW HDMI */
269 #define AZX_DCAPS_INTEL_HASWELL \
270 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_COUNT_LPIB_DELAY |\
271 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
272 	 AZX_DCAPS_SNOOP_TYPE(SCH))
273 
274 /* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
275 #define AZX_DCAPS_INTEL_BROADWELL \
276 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_POSFIX_LPIB |\
277 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
278 	 AZX_DCAPS_SNOOP_TYPE(SCH))
279 
280 #define AZX_DCAPS_INTEL_BAYTRAIL \
281 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
282 
283 #define AZX_DCAPS_INTEL_BRASWELL \
284 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
285 	 AZX_DCAPS_I915_COMPONENT)
286 
287 #define AZX_DCAPS_INTEL_SKYLAKE \
288 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
289 	 AZX_DCAPS_SEPARATE_STREAM_TAG | AZX_DCAPS_I915_COMPONENT)
290 
291 #define AZX_DCAPS_INTEL_BROXTON		AZX_DCAPS_INTEL_SKYLAKE
292 
293 /* quirks for ATI SB / AMD Hudson */
294 #define AZX_DCAPS_PRESET_ATI_SB \
295 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_POSFIX_LPIB |\
296 	 AZX_DCAPS_SNOOP_TYPE(ATI))
297 
298 /* quirks for ATI/AMD HDMI */
299 #define AZX_DCAPS_PRESET_ATI_HDMI \
300 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_POSFIX_LPIB|\
301 	 AZX_DCAPS_NO_MSI64)
302 
303 /* quirks for ATI HDMI with snoop off */
304 #define AZX_DCAPS_PRESET_ATI_HDMI_NS \
305 	(AZX_DCAPS_PRESET_ATI_HDMI | AZX_DCAPS_SNOOP_OFF)
306 
307 /* quirks for AMD SB */
308 #define AZX_DCAPS_PRESET_AMD_SB \
309 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_AMD_WORKAROUND |\
310 	 AZX_DCAPS_SNOOP_TYPE(ATI) | AZX_DCAPS_PM_RUNTIME)
311 
312 /* quirks for Nvidia */
313 #define AZX_DCAPS_PRESET_NVIDIA \
314 	(AZX_DCAPS_NO_MSI | AZX_DCAPS_CORBRP_SELF_CLEAR |\
315 	 AZX_DCAPS_SNOOP_TYPE(NVIDIA))
316 
317 #define AZX_DCAPS_PRESET_CTHDA \
318 	(AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB |\
319 	 AZX_DCAPS_NO_64BIT |\
320 	 AZX_DCAPS_4K_BDLE_BOUNDARY | AZX_DCAPS_SNOOP_OFF)
321 
322 /*
323  * vga_switcheroo support
324  */
325 #ifdef SUPPORT_VGA_SWITCHEROO
326 #define use_vga_switcheroo(chip)	((chip)->use_vga_switcheroo)
327 #define needs_eld_notify_link(chip)	((chip)->bus.keep_power)
328 #else
329 #define use_vga_switcheroo(chip)	0
330 #define needs_eld_notify_link(chip)	false
331 #endif
332 
333 #define CONTROLLER_IN_GPU(pci) (((pci)->device == 0x0a0c) || \
334 					((pci)->device == 0x0c0c) || \
335 					((pci)->device == 0x0d0c) || \
336 					((pci)->device == 0x160c) || \
337 					((pci)->device == 0x490d))
338 
339 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
340 
341 static const char * const driver_short_names[] = {
342 	[AZX_DRIVER_ICH] = "HDA Intel",
343 	[AZX_DRIVER_PCH] = "HDA Intel PCH",
344 	[AZX_DRIVER_SCH] = "HDA Intel MID",
345 	[AZX_DRIVER_SKL] = "HDA Intel PCH", /* kept old name for compatibility */
346 	[AZX_DRIVER_HDMI] = "HDA Intel HDMI",
347 	[AZX_DRIVER_ATI] = "HDA ATI SB",
348 	[AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
349 	[AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
350 	[AZX_DRIVER_VIA] = "HDA VIA VT82xx",
351 	[AZX_DRIVER_SIS] = "HDA SIS966",
352 	[AZX_DRIVER_ULI] = "HDA ULI M5461",
353 	[AZX_DRIVER_NVIDIA] = "HDA NVidia",
354 	[AZX_DRIVER_TERA] = "HDA Teradici",
355 	[AZX_DRIVER_CTX] = "HDA Creative",
356 	[AZX_DRIVER_CTHDA] = "HDA Creative",
357 	[AZX_DRIVER_CMEDIA] = "HDA C-Media",
358 	[AZX_DRIVER_ZHAOXIN] = "HDA Zhaoxin",
359 	[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
360 };
361 
362 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
363 static void set_default_power_save(struct azx *chip);
364 
365 /*
366  * initialize the PCI registers
367  */
368 /* update bits in a PCI register byte */
369 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
370 			    unsigned char mask, unsigned char val)
371 {
372 	unsigned char data;
373 
374 	pci_read_config_byte(pci, reg, &data);
375 	data &= ~mask;
376 	data |= (val & mask);
377 	pci_write_config_byte(pci, reg, data);
378 }
379 
380 static void azx_init_pci(struct azx *chip)
381 {
382 	int snoop_type = azx_get_snoop_type(chip);
383 
384 	/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
385 	 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
386 	 * Ensuring these bits are 0 clears playback static on some HD Audio
387 	 * codecs.
388 	 * The PCI register TCSEL is defined in the Intel manuals.
389 	 */
390 	if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
391 		dev_dbg(chip->card->dev, "Clearing TCSEL\n");
392 		update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
393 	}
394 
395 	/* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
396 	 * we need to enable snoop.
397 	 */
398 	if (snoop_type == AZX_SNOOP_TYPE_ATI) {
399 		dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
400 			azx_snoop(chip));
401 		update_pci_byte(chip->pci,
402 				ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
403 				azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
404 	}
405 
406 	/* For NVIDIA HDA, enable snoop */
407 	if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
408 		dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
409 			azx_snoop(chip));
410 		update_pci_byte(chip->pci,
411 				NVIDIA_HDA_TRANSREG_ADDR,
412 				0x0f, NVIDIA_HDA_ENABLE_COHBITS);
413 		update_pci_byte(chip->pci,
414 				NVIDIA_HDA_ISTRM_COH,
415 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
416 		update_pci_byte(chip->pci,
417 				NVIDIA_HDA_OSTRM_COH,
418 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
419 	}
420 
421 	/* Enable SCH/PCH snoop if needed */
422 	if (snoop_type == AZX_SNOOP_TYPE_SCH) {
423 		unsigned short snoop;
424 		pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
425 		if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
426 		    (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
427 			snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
428 			if (!azx_snoop(chip))
429 				snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
430 			pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
431 			pci_read_config_word(chip->pci,
432 				INTEL_SCH_HDA_DEVC, &snoop);
433 		}
434 		dev_dbg(chip->card->dev, "SCH snoop: %s\n",
435 			(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
436 			"Disabled" : "Enabled");
437         }
438 }
439 
440 /*
441  * In BXT-P A0, HD-Audio DMA requests is later than expected,
442  * and makes an audio stream sensitive to system latencies when
443  * 24/32 bits are playing.
444  * Adjusting threshold of DMA fifo to force the DMA request
445  * sooner to improve latency tolerance at the expense of power.
446  */
447 static void bxt_reduce_dma_latency(struct azx *chip)
448 {
449 	u32 val;
450 
451 	val = azx_readl(chip, VS_EM4L);
452 	val &= (0x3 << 20);
453 	azx_writel(chip, VS_EM4L, val);
454 }
455 
456 /*
457  * ML_LCAP bits:
458  *  bit 0: 6 MHz Supported
459  *  bit 1: 12 MHz Supported
460  *  bit 2: 24 MHz Supported
461  *  bit 3: 48 MHz Supported
462  *  bit 4: 96 MHz Supported
463  *  bit 5: 192 MHz Supported
464  */
465 static int intel_get_lctl_scf(struct azx *chip)
466 {
467 	struct hdac_bus *bus = azx_bus(chip);
468 	static const int preferred_bits[] = { 2, 3, 1, 4, 5 };
469 	u32 val, t;
470 	int i;
471 
472 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCAP);
473 
474 	for (i = 0; i < ARRAY_SIZE(preferred_bits); i++) {
475 		t = preferred_bits[i];
476 		if (val & (1 << t))
477 			return t;
478 	}
479 
480 	dev_warn(chip->card->dev, "set audio clock frequency to 6MHz");
481 	return 0;
482 }
483 
484 static int intel_ml_lctl_set_power(struct azx *chip, int state)
485 {
486 	struct hdac_bus *bus = azx_bus(chip);
487 	u32 val;
488 	int timeout;
489 
490 	/*
491 	 * the codecs are sharing the first link setting by default
492 	 * If other links are enabled for stream, they need similar fix
493 	 */
494 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
495 	val &= ~AZX_MLCTL_SPA;
496 	val |= state << AZX_MLCTL_SPA_SHIFT;
497 	writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
498 	/* wait for CPA */
499 	timeout = 50;
500 	while (timeout) {
501 		if (((readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL)) &
502 		    AZX_MLCTL_CPA) == (state << AZX_MLCTL_CPA_SHIFT))
503 			return 0;
504 		timeout--;
505 		udelay(10);
506 	}
507 
508 	return -1;
509 }
510 
511 static void intel_init_lctl(struct azx *chip)
512 {
513 	struct hdac_bus *bus = azx_bus(chip);
514 	u32 val;
515 	int ret;
516 
517 	/* 0. check lctl register value is correct or not */
518 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
519 	/* if SCF is already set, let's use it */
520 	if ((val & ML_LCTL_SCF_MASK) != 0)
521 		return;
522 
523 	/*
524 	 * Before operating on SPA, CPA must match SPA.
525 	 * Any deviation may result in undefined behavior.
526 	 */
527 	if (((val & AZX_MLCTL_SPA) >> AZX_MLCTL_SPA_SHIFT) !=
528 		((val & AZX_MLCTL_CPA) >> AZX_MLCTL_CPA_SHIFT))
529 		return;
530 
531 	/* 1. turn link down: set SPA to 0 and wait CPA to 0 */
532 	ret = intel_ml_lctl_set_power(chip, 0);
533 	udelay(100);
534 	if (ret)
535 		goto set_spa;
536 
537 	/* 2. update SCF to select a properly audio clock*/
538 	val &= ~ML_LCTL_SCF_MASK;
539 	val |= intel_get_lctl_scf(chip);
540 	writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
541 
542 set_spa:
543 	/* 4. turn link up: set SPA to 1 and wait CPA to 1 */
544 	intel_ml_lctl_set_power(chip, 1);
545 	udelay(100);
546 }
547 
548 static void hda_intel_init_chip(struct azx *chip, bool full_reset)
549 {
550 	struct hdac_bus *bus = azx_bus(chip);
551 	struct pci_dev *pci = chip->pci;
552 	u32 val;
553 
554 	snd_hdac_set_codec_wakeup(bus, true);
555 	if (chip->driver_type == AZX_DRIVER_SKL) {
556 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
557 		val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
558 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
559 	}
560 	azx_init_chip(chip, full_reset);
561 	if (chip->driver_type == AZX_DRIVER_SKL) {
562 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
563 		val = val | INTEL_HDA_CGCTL_MISCBDCGE;
564 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
565 	}
566 
567 	snd_hdac_set_codec_wakeup(bus, false);
568 
569 	/* reduce dma latency to avoid noise */
570 	if (IS_BXT(pci))
571 		bxt_reduce_dma_latency(chip);
572 
573 	if (bus->mlcap != NULL)
574 		intel_init_lctl(chip);
575 }
576 
577 /* calculate runtime delay from LPIB */
578 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
579 				   unsigned int pos)
580 {
581 	struct snd_pcm_substream *substream = azx_dev->core.substream;
582 	int stream = substream->stream;
583 	unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
584 	int delay;
585 
586 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
587 		delay = pos - lpib_pos;
588 	else
589 		delay = lpib_pos - pos;
590 	if (delay < 0) {
591 		if (delay >= azx_dev->core.delay_negative_threshold)
592 			delay = 0;
593 		else
594 			delay += azx_dev->core.bufsize;
595 	}
596 
597 	if (delay >= azx_dev->core.period_bytes) {
598 		dev_info(chip->card->dev,
599 			 "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
600 			 delay, azx_dev->core.period_bytes);
601 		delay = 0;
602 		chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
603 		chip->get_delay[stream] = NULL;
604 	}
605 
606 	return bytes_to_frames(substream->runtime, delay);
607 }
608 
609 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
610 
611 /* called from IRQ */
612 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
613 {
614 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
615 	int ok;
616 
617 	ok = azx_position_ok(chip, azx_dev);
618 	if (ok == 1) {
619 		azx_dev->irq_pending = 0;
620 		return ok;
621 	} else if (ok == 0) {
622 		/* bogus IRQ, process it later */
623 		azx_dev->irq_pending = 1;
624 		schedule_work(&hda->irq_pending_work);
625 	}
626 	return 0;
627 }
628 
629 #define display_power(chip, enable) \
630 	snd_hdac_display_power(azx_bus(chip), HDA_CODEC_IDX_CONTROLLER, enable)
631 
632 /*
633  * Check whether the current DMA position is acceptable for updating
634  * periods.  Returns non-zero if it's OK.
635  *
636  * Many HD-audio controllers appear pretty inaccurate about
637  * the update-IRQ timing.  The IRQ is issued before actually the
638  * data is processed.  So, we need to process it afterwords in a
639  * workqueue.
640  */
641 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
642 {
643 	struct snd_pcm_substream *substream = azx_dev->core.substream;
644 	int stream = substream->stream;
645 	u32 wallclk;
646 	unsigned int pos;
647 
648 	wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
649 	if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
650 		return -1;	/* bogus (too early) interrupt */
651 
652 	if (chip->get_position[stream])
653 		pos = chip->get_position[stream](chip, azx_dev);
654 	else { /* use the position buffer as default */
655 		pos = azx_get_pos_posbuf(chip, azx_dev);
656 		if (!pos || pos == (u32)-1) {
657 			dev_info(chip->card->dev,
658 				 "Invalid position buffer, using LPIB read method instead.\n");
659 			chip->get_position[stream] = azx_get_pos_lpib;
660 			if (chip->get_position[0] == azx_get_pos_lpib &&
661 			    chip->get_position[1] == azx_get_pos_lpib)
662 				azx_bus(chip)->use_posbuf = false;
663 			pos = azx_get_pos_lpib(chip, azx_dev);
664 			chip->get_delay[stream] = NULL;
665 		} else {
666 			chip->get_position[stream] = azx_get_pos_posbuf;
667 			if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
668 				chip->get_delay[stream] = azx_get_delay_from_lpib;
669 		}
670 	}
671 
672 	if (pos >= azx_dev->core.bufsize)
673 		pos = 0;
674 
675 	if (WARN_ONCE(!azx_dev->core.period_bytes,
676 		      "hda-intel: zero azx_dev->period_bytes"))
677 		return -1; /* this shouldn't happen! */
678 	if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
679 	    pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
680 		/* NG - it's below the first next period boundary */
681 		return chip->bdl_pos_adj ? 0 : -1;
682 	azx_dev->core.start_wallclk += wallclk;
683 	return 1; /* OK, it's fine */
684 }
685 
686 /*
687  * The work for pending PCM period updates.
688  */
689 static void azx_irq_pending_work(struct work_struct *work)
690 {
691 	struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
692 	struct azx *chip = &hda->chip;
693 	struct hdac_bus *bus = azx_bus(chip);
694 	struct hdac_stream *s;
695 	int pending, ok;
696 
697 	if (!hda->irq_pending_warned) {
698 		dev_info(chip->card->dev,
699 			 "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
700 			 chip->card->number);
701 		hda->irq_pending_warned = 1;
702 	}
703 
704 	for (;;) {
705 		pending = 0;
706 		spin_lock_irq(&bus->reg_lock);
707 		list_for_each_entry(s, &bus->stream_list, list) {
708 			struct azx_dev *azx_dev = stream_to_azx_dev(s);
709 			if (!azx_dev->irq_pending ||
710 			    !s->substream ||
711 			    !s->running)
712 				continue;
713 			ok = azx_position_ok(chip, azx_dev);
714 			if (ok > 0) {
715 				azx_dev->irq_pending = 0;
716 				spin_unlock(&bus->reg_lock);
717 				snd_pcm_period_elapsed(s->substream);
718 				spin_lock(&bus->reg_lock);
719 			} else if (ok < 0) {
720 				pending = 0;	/* too early */
721 			} else
722 				pending++;
723 		}
724 		spin_unlock_irq(&bus->reg_lock);
725 		if (!pending)
726 			return;
727 		msleep(1);
728 	}
729 }
730 
731 /* clear irq_pending flags and assure no on-going workq */
732 static void azx_clear_irq_pending(struct azx *chip)
733 {
734 	struct hdac_bus *bus = azx_bus(chip);
735 	struct hdac_stream *s;
736 
737 	spin_lock_irq(&bus->reg_lock);
738 	list_for_each_entry(s, &bus->stream_list, list) {
739 		struct azx_dev *azx_dev = stream_to_azx_dev(s);
740 		azx_dev->irq_pending = 0;
741 	}
742 	spin_unlock_irq(&bus->reg_lock);
743 }
744 
745 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
746 {
747 	struct hdac_bus *bus = azx_bus(chip);
748 
749 	if (request_irq(chip->pci->irq, azx_interrupt,
750 			chip->msi ? 0 : IRQF_SHARED,
751 			chip->card->irq_descr, chip)) {
752 		dev_err(chip->card->dev,
753 			"unable to grab IRQ %d, disabling device\n",
754 			chip->pci->irq);
755 		if (do_disconnect)
756 			snd_card_disconnect(chip->card);
757 		return -1;
758 	}
759 	bus->irq = chip->pci->irq;
760 	chip->card->sync_irq = bus->irq;
761 	pci_intx(chip->pci, !chip->msi);
762 	return 0;
763 }
764 
765 /* get the current DMA position with correction on VIA chips */
766 static unsigned int azx_via_get_position(struct azx *chip,
767 					 struct azx_dev *azx_dev)
768 {
769 	unsigned int link_pos, mini_pos, bound_pos;
770 	unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
771 	unsigned int fifo_size;
772 
773 	link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
774 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
775 		/* Playback, no problem using link position */
776 		return link_pos;
777 	}
778 
779 	/* Capture */
780 	/* For new chipset,
781 	 * use mod to get the DMA position just like old chipset
782 	 */
783 	mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
784 	mod_dma_pos %= azx_dev->core.period_bytes;
785 
786 	fifo_size = azx_stream(azx_dev)->fifo_size - 1;
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 #define AMD_FIFO_SIZE	32
819 
820 /* get the current DMA position with FIFO size correction */
821 static unsigned int azx_get_pos_fifo(struct azx *chip, struct azx_dev *azx_dev)
822 {
823 	struct snd_pcm_substream *substream = azx_dev->core.substream;
824 	struct snd_pcm_runtime *runtime = substream->runtime;
825 	unsigned int pos, delay;
826 
827 	pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
828 	if (!runtime)
829 		return pos;
830 
831 	runtime->delay = AMD_FIFO_SIZE;
832 	delay = frames_to_bytes(runtime, AMD_FIFO_SIZE);
833 	if (azx_dev->insufficient) {
834 		if (pos < delay) {
835 			delay = pos;
836 			runtime->delay = bytes_to_frames(runtime, pos);
837 		} else {
838 			azx_dev->insufficient = 0;
839 		}
840 	}
841 
842 	/* correct the DMA position for capture stream */
843 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
844 		if (pos < delay)
845 			pos += azx_dev->core.bufsize;
846 		pos -= delay;
847 	}
848 
849 	return pos;
850 }
851 
852 static int azx_get_delay_from_fifo(struct azx *chip, struct azx_dev *azx_dev,
853 				   unsigned int pos)
854 {
855 	struct snd_pcm_substream *substream = azx_dev->core.substream;
856 
857 	/* just read back the calculated value in the above */
858 	return substream->runtime->delay;
859 }
860 
861 static unsigned int azx_skl_get_dpib_pos(struct azx *chip,
862 					 struct azx_dev *azx_dev)
863 {
864 	return _snd_hdac_chip_readl(azx_bus(chip),
865 				    AZX_REG_VS_SDXDPIB_XBASE +
866 				    (AZX_REG_VS_SDXDPIB_XINTERVAL *
867 				     azx_dev->core.index));
868 }
869 
870 /* get the current DMA position with correction on SKL+ chips */
871 static unsigned int azx_get_pos_skl(struct azx *chip, struct azx_dev *azx_dev)
872 {
873 	/* DPIB register gives a more accurate position for playback */
874 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
875 		return azx_skl_get_dpib_pos(chip, azx_dev);
876 
877 	/* For capture, we need to read posbuf, but it requires a delay
878 	 * for the possible boundary overlap; the read of DPIB fetches the
879 	 * actual posbuf
880 	 */
881 	udelay(20);
882 	azx_skl_get_dpib_pos(chip, azx_dev);
883 	return azx_get_pos_posbuf(chip, azx_dev);
884 }
885 
886 #ifdef CONFIG_PM
887 static DEFINE_MUTEX(card_list_lock);
888 static LIST_HEAD(card_list);
889 
890 static void azx_add_card_list(struct azx *chip)
891 {
892 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
893 	mutex_lock(&card_list_lock);
894 	list_add(&hda->list, &card_list);
895 	mutex_unlock(&card_list_lock);
896 }
897 
898 static void azx_del_card_list(struct azx *chip)
899 {
900 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
901 	mutex_lock(&card_list_lock);
902 	list_del_init(&hda->list);
903 	mutex_unlock(&card_list_lock);
904 }
905 
906 /* trigger power-save check at writing parameter */
907 static int param_set_xint(const char *val, const struct kernel_param *kp)
908 {
909 	struct hda_intel *hda;
910 	struct azx *chip;
911 	int prev = power_save;
912 	int ret = param_set_int(val, kp);
913 
914 	if (ret || prev == power_save)
915 		return ret;
916 
917 	mutex_lock(&card_list_lock);
918 	list_for_each_entry(hda, &card_list, list) {
919 		chip = &hda->chip;
920 		if (!hda->probe_continued || chip->disabled)
921 			continue;
922 		snd_hda_set_power_save(&chip->bus, power_save * 1000);
923 	}
924 	mutex_unlock(&card_list_lock);
925 	return 0;
926 }
927 
928 /*
929  * power management
930  */
931 static bool azx_is_pm_ready(struct snd_card *card)
932 {
933 	struct azx *chip;
934 	struct hda_intel *hda;
935 
936 	if (!card)
937 		return false;
938 	chip = card->private_data;
939 	hda = container_of(chip, struct hda_intel, chip);
940 	if (chip->disabled || hda->init_failed || !chip->running)
941 		return false;
942 	return true;
943 }
944 
945 static void __azx_runtime_suspend(struct azx *chip)
946 {
947 	azx_stop_chip(chip);
948 	azx_enter_link_reset(chip);
949 	azx_clear_irq_pending(chip);
950 	display_power(chip, false);
951 }
952 
953 static void __azx_runtime_resume(struct azx *chip)
954 {
955 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
956 	struct hdac_bus *bus = azx_bus(chip);
957 	struct hda_codec *codec;
958 	int status;
959 
960 	display_power(chip, true);
961 	if (hda->need_i915_power)
962 		snd_hdac_i915_set_bclk(bus);
963 
964 	/* Read STATESTS before controller reset */
965 	status = azx_readw(chip, STATESTS);
966 
967 	azx_init_pci(chip);
968 	hda_intel_init_chip(chip, true);
969 
970 	/* Avoid codec resume if runtime resume is for system suspend */
971 	if (!chip->pm_prepared) {
972 		list_for_each_codec(codec, &chip->bus) {
973 			if (codec->relaxed_resume)
974 				continue;
975 
976 			if (codec->forced_resume || (status & (1 << codec->addr)))
977 				pm_request_resume(hda_codec_dev(codec));
978 		}
979 	}
980 
981 	/* power down again for link-controlled chips */
982 	if (!hda->need_i915_power)
983 		display_power(chip, false);
984 }
985 
986 #ifdef CONFIG_PM_SLEEP
987 static int azx_prepare(struct device *dev)
988 {
989 	struct snd_card *card = dev_get_drvdata(dev);
990 	struct azx *chip;
991 
992 	if (!azx_is_pm_ready(card))
993 		return 0;
994 
995 	chip = card->private_data;
996 	chip->pm_prepared = 1;
997 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
998 
999 	flush_work(&azx_bus(chip)->unsol_work);
1000 
1001 	/* HDA controller always requires different WAKEEN for runtime suspend
1002 	 * and system suspend, so don't use direct-complete here.
1003 	 */
1004 	return 0;
1005 }
1006 
1007 static void azx_complete(struct device *dev)
1008 {
1009 	struct snd_card *card = dev_get_drvdata(dev);
1010 	struct azx *chip;
1011 
1012 	if (!azx_is_pm_ready(card))
1013 		return;
1014 
1015 	chip = card->private_data;
1016 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1017 	chip->pm_prepared = 0;
1018 }
1019 
1020 static int azx_suspend(struct device *dev)
1021 {
1022 	struct snd_card *card = dev_get_drvdata(dev);
1023 	struct azx *chip;
1024 	struct hdac_bus *bus;
1025 
1026 	if (!azx_is_pm_ready(card))
1027 		return 0;
1028 
1029 	chip = card->private_data;
1030 	bus = azx_bus(chip);
1031 	__azx_runtime_suspend(chip);
1032 	if (bus->irq >= 0) {
1033 		free_irq(bus->irq, chip);
1034 		bus->irq = -1;
1035 		chip->card->sync_irq = -1;
1036 	}
1037 
1038 	if (chip->msi)
1039 		pci_disable_msi(chip->pci);
1040 
1041 	trace_azx_suspend(chip);
1042 	return 0;
1043 }
1044 
1045 static int azx_resume(struct device *dev)
1046 {
1047 	struct snd_card *card = dev_get_drvdata(dev);
1048 	struct azx *chip;
1049 
1050 	if (!azx_is_pm_ready(card))
1051 		return 0;
1052 
1053 	chip = card->private_data;
1054 	if (chip->msi)
1055 		if (pci_enable_msi(chip->pci) < 0)
1056 			chip->msi = 0;
1057 	if (azx_acquire_irq(chip, 1) < 0)
1058 		return -EIO;
1059 
1060 	__azx_runtime_resume(chip);
1061 
1062 	trace_azx_resume(chip);
1063 	return 0;
1064 }
1065 
1066 /* put codec down to D3 at hibernation for Intel SKL+;
1067  * otherwise BIOS may still access the codec and screw up the driver
1068  */
1069 static int azx_freeze_noirq(struct device *dev)
1070 {
1071 	struct snd_card *card = dev_get_drvdata(dev);
1072 	struct azx *chip = card->private_data;
1073 	struct pci_dev *pci = to_pci_dev(dev);
1074 
1075 	if (!azx_is_pm_ready(card))
1076 		return 0;
1077 	if (chip->driver_type == AZX_DRIVER_SKL)
1078 		pci_set_power_state(pci, PCI_D3hot);
1079 
1080 	return 0;
1081 }
1082 
1083 static int azx_thaw_noirq(struct device *dev)
1084 {
1085 	struct snd_card *card = dev_get_drvdata(dev);
1086 	struct azx *chip = card->private_data;
1087 	struct pci_dev *pci = to_pci_dev(dev);
1088 
1089 	if (!azx_is_pm_ready(card))
1090 		return 0;
1091 	if (chip->driver_type == AZX_DRIVER_SKL)
1092 		pci_set_power_state(pci, PCI_D0);
1093 
1094 	return 0;
1095 }
1096 #endif /* CONFIG_PM_SLEEP */
1097 
1098 static int azx_runtime_suspend(struct device *dev)
1099 {
1100 	struct snd_card *card = dev_get_drvdata(dev);
1101 	struct azx *chip;
1102 
1103 	if (!azx_is_pm_ready(card))
1104 		return 0;
1105 	chip = card->private_data;
1106 
1107 	/* enable controller wake up event */
1108 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) | STATESTS_INT_MASK);
1109 
1110 	__azx_runtime_suspend(chip);
1111 	trace_azx_runtime_suspend(chip);
1112 	return 0;
1113 }
1114 
1115 static int azx_runtime_resume(struct device *dev)
1116 {
1117 	struct snd_card *card = dev_get_drvdata(dev);
1118 	struct azx *chip;
1119 
1120 	if (!azx_is_pm_ready(card))
1121 		return 0;
1122 	chip = card->private_data;
1123 	__azx_runtime_resume(chip);
1124 
1125 	/* disable controller Wake Up event*/
1126 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) & ~STATESTS_INT_MASK);
1127 
1128 	trace_azx_runtime_resume(chip);
1129 	return 0;
1130 }
1131 
1132 static int azx_runtime_idle(struct device *dev)
1133 {
1134 	struct snd_card *card = dev_get_drvdata(dev);
1135 	struct azx *chip;
1136 	struct hda_intel *hda;
1137 
1138 	if (!card)
1139 		return 0;
1140 
1141 	chip = card->private_data;
1142 	hda = container_of(chip, struct hda_intel, chip);
1143 	if (chip->disabled || hda->init_failed)
1144 		return 0;
1145 
1146 	if (!power_save_controller || !azx_has_pm_runtime(chip) ||
1147 	    azx_bus(chip)->codec_powered || !chip->running)
1148 		return -EBUSY;
1149 
1150 	/* ELD notification gets broken when HD-audio bus is off */
1151 	if (needs_eld_notify_link(chip))
1152 		return -EBUSY;
1153 
1154 	return 0;
1155 }
1156 
1157 static const struct dev_pm_ops azx_pm = {
1158 	SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
1159 #ifdef CONFIG_PM_SLEEP
1160 	.prepare = azx_prepare,
1161 	.complete = azx_complete,
1162 	.freeze_noirq = azx_freeze_noirq,
1163 	.thaw_noirq = azx_thaw_noirq,
1164 #endif
1165 	SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
1166 };
1167 
1168 #define AZX_PM_OPS	&azx_pm
1169 #else
1170 #define azx_add_card_list(chip) /* NOP */
1171 #define azx_del_card_list(chip) /* NOP */
1172 #define AZX_PM_OPS	NULL
1173 #endif /* CONFIG_PM */
1174 
1175 
1176 static int azx_probe_continue(struct azx *chip);
1177 
1178 #ifdef SUPPORT_VGA_SWITCHEROO
1179 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
1180 
1181 static void azx_vs_set_state(struct pci_dev *pci,
1182 			     enum vga_switcheroo_state state)
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 	struct hda_codec *codec;
1188 	bool disabled;
1189 
1190 	wait_for_completion(&hda->probe_wait);
1191 	if (hda->init_failed)
1192 		return;
1193 
1194 	disabled = (state == VGA_SWITCHEROO_OFF);
1195 	if (chip->disabled == disabled)
1196 		return;
1197 
1198 	if (!hda->probe_continued) {
1199 		chip->disabled = disabled;
1200 		if (!disabled) {
1201 			dev_info(chip->card->dev,
1202 				 "Start delayed initialization\n");
1203 			if (azx_probe_continue(chip) < 0)
1204 				dev_err(chip->card->dev, "initialization error\n");
1205 		}
1206 	} else {
1207 		dev_info(chip->card->dev, "%s via vga_switcheroo\n",
1208 			 disabled ? "Disabling" : "Enabling");
1209 		if (disabled) {
1210 			list_for_each_codec(codec, &chip->bus) {
1211 				pm_runtime_suspend(hda_codec_dev(codec));
1212 				pm_runtime_disable(hda_codec_dev(codec));
1213 			}
1214 			pm_runtime_suspend(card->dev);
1215 			pm_runtime_disable(card->dev);
1216 			/* when we get suspended by vga_switcheroo we end up in D3cold,
1217 			 * however we have no ACPI handle, so pci/acpi can't put us there,
1218 			 * put ourselves there */
1219 			pci->current_state = PCI_D3cold;
1220 			chip->disabled = true;
1221 			if (snd_hda_lock_devices(&chip->bus))
1222 				dev_warn(chip->card->dev,
1223 					 "Cannot lock devices!\n");
1224 		} else {
1225 			snd_hda_unlock_devices(&chip->bus);
1226 			chip->disabled = false;
1227 			pm_runtime_enable(card->dev);
1228 			list_for_each_codec(codec, &chip->bus) {
1229 				pm_runtime_enable(hda_codec_dev(codec));
1230 				pm_runtime_resume(hda_codec_dev(codec));
1231 			}
1232 		}
1233 	}
1234 }
1235 
1236 static bool azx_vs_can_switch(struct pci_dev *pci)
1237 {
1238 	struct snd_card *card = pci_get_drvdata(pci);
1239 	struct azx *chip = card->private_data;
1240 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1241 
1242 	wait_for_completion(&hda->probe_wait);
1243 	if (hda->init_failed)
1244 		return false;
1245 	if (chip->disabled || !hda->probe_continued)
1246 		return true;
1247 	if (snd_hda_lock_devices(&chip->bus))
1248 		return false;
1249 	snd_hda_unlock_devices(&chip->bus);
1250 	return true;
1251 }
1252 
1253 /*
1254  * The discrete GPU cannot power down unless the HDA controller runtime
1255  * suspends, so activate runtime PM on codecs even if power_save == 0.
1256  */
1257 static void setup_vga_switcheroo_runtime_pm(struct azx *chip)
1258 {
1259 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1260 	struct hda_codec *codec;
1261 
1262 	if (hda->use_vga_switcheroo && !needs_eld_notify_link(chip)) {
1263 		list_for_each_codec(codec, &chip->bus)
1264 			codec->auto_runtime_pm = 1;
1265 		/* reset the power save setup */
1266 		if (chip->running)
1267 			set_default_power_save(chip);
1268 	}
1269 }
1270 
1271 static void azx_vs_gpu_bound(struct pci_dev *pci,
1272 			     enum vga_switcheroo_client_id client_id)
1273 {
1274 	struct snd_card *card = pci_get_drvdata(pci);
1275 	struct azx *chip = card->private_data;
1276 
1277 	if (client_id == VGA_SWITCHEROO_DIS)
1278 		chip->bus.keep_power = 0;
1279 	setup_vga_switcheroo_runtime_pm(chip);
1280 }
1281 
1282 static void init_vga_switcheroo(struct azx *chip)
1283 {
1284 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1285 	struct pci_dev *p = get_bound_vga(chip->pci);
1286 	struct pci_dev *parent;
1287 	if (p) {
1288 		dev_info(chip->card->dev,
1289 			 "Handle vga_switcheroo audio client\n");
1290 		hda->use_vga_switcheroo = 1;
1291 
1292 		/* cleared in either gpu_bound op or codec probe, or when its
1293 		 * upstream port has _PR3 (i.e. dGPU).
1294 		 */
1295 		parent = pci_upstream_bridge(p);
1296 		chip->bus.keep_power = parent ? !pci_pr3_present(parent) : 1;
1297 		chip->driver_caps |= AZX_DCAPS_PM_RUNTIME;
1298 		pci_dev_put(p);
1299 	}
1300 }
1301 
1302 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1303 	.set_gpu_state = azx_vs_set_state,
1304 	.can_switch = azx_vs_can_switch,
1305 	.gpu_bound = azx_vs_gpu_bound,
1306 };
1307 
1308 static int register_vga_switcheroo(struct azx *chip)
1309 {
1310 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1311 	struct pci_dev *p;
1312 	int err;
1313 
1314 	if (!hda->use_vga_switcheroo)
1315 		return 0;
1316 
1317 	p = get_bound_vga(chip->pci);
1318 	err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops, p);
1319 	pci_dev_put(p);
1320 
1321 	if (err < 0)
1322 		return err;
1323 	hda->vga_switcheroo_registered = 1;
1324 
1325 	return 0;
1326 }
1327 #else
1328 #define init_vga_switcheroo(chip)		/* NOP */
1329 #define register_vga_switcheroo(chip)		0
1330 #define check_hdmi_disabled(pci)	false
1331 #define setup_vga_switcheroo_runtime_pm(chip)	/* NOP */
1332 #endif /* SUPPORT_VGA_SWITCHER */
1333 
1334 /*
1335  * destructor
1336  */
1337 static void azx_free(struct azx *chip)
1338 {
1339 	struct pci_dev *pci = chip->pci;
1340 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1341 	struct hdac_bus *bus = azx_bus(chip);
1342 
1343 	if (hda->freed)
1344 		return;
1345 
1346 	if (azx_has_pm_runtime(chip) && chip->running)
1347 		pm_runtime_get_noresume(&pci->dev);
1348 	chip->running = 0;
1349 
1350 	azx_del_card_list(chip);
1351 
1352 	hda->init_failed = 1; /* to be sure */
1353 	complete_all(&hda->probe_wait);
1354 
1355 	if (use_vga_switcheroo(hda)) {
1356 		if (chip->disabled && hda->probe_continued)
1357 			snd_hda_unlock_devices(&chip->bus);
1358 		if (hda->vga_switcheroo_registered)
1359 			vga_switcheroo_unregister_client(chip->pci);
1360 	}
1361 
1362 	if (bus->chip_init) {
1363 		azx_clear_irq_pending(chip);
1364 		azx_stop_all_streams(chip);
1365 		azx_stop_chip(chip);
1366 	}
1367 
1368 	if (bus->irq >= 0)
1369 		free_irq(bus->irq, (void*)chip);
1370 	if (chip->msi)
1371 		pci_disable_msi(chip->pci);
1372 	iounmap(bus->remap_addr);
1373 
1374 	azx_free_stream_pages(chip);
1375 	azx_free_streams(chip);
1376 	snd_hdac_bus_exit(bus);
1377 
1378 	if (chip->region_requested)
1379 		pci_release_regions(chip->pci);
1380 
1381 	pci_disable_device(chip->pci);
1382 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1383 	release_firmware(chip->fw);
1384 #endif
1385 	display_power(chip, false);
1386 
1387 	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT)
1388 		snd_hdac_i915_exit(bus);
1389 
1390 	hda->freed = 1;
1391 }
1392 
1393 static int azx_dev_disconnect(struct snd_device *device)
1394 {
1395 	struct azx *chip = device->device_data;
1396 	struct hdac_bus *bus = azx_bus(chip);
1397 
1398 	chip->bus.shutdown = 1;
1399 	cancel_work_sync(&bus->unsol_work);
1400 
1401 	return 0;
1402 }
1403 
1404 static int azx_dev_free(struct snd_device *device)
1405 {
1406 	azx_free(device->device_data);
1407 	return 0;
1408 }
1409 
1410 #ifdef SUPPORT_VGA_SWITCHEROO
1411 #ifdef CONFIG_ACPI
1412 /* ATPX is in the integrated GPU's namespace */
1413 static bool atpx_present(void)
1414 {
1415 	struct pci_dev *pdev = NULL;
1416 	acpi_handle dhandle, atpx_handle;
1417 	acpi_status status;
1418 
1419 	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
1420 		dhandle = ACPI_HANDLE(&pdev->dev);
1421 		if (dhandle) {
1422 			status = acpi_get_handle(dhandle, "ATPX", &atpx_handle);
1423 			if (ACPI_SUCCESS(status)) {
1424 				pci_dev_put(pdev);
1425 				return true;
1426 			}
1427 		}
1428 	}
1429 	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
1430 		dhandle = ACPI_HANDLE(&pdev->dev);
1431 		if (dhandle) {
1432 			status = acpi_get_handle(dhandle, "ATPX", &atpx_handle);
1433 			if (ACPI_SUCCESS(status)) {
1434 				pci_dev_put(pdev);
1435 				return true;
1436 			}
1437 		}
1438 	}
1439 	return false;
1440 }
1441 #else
1442 static bool atpx_present(void)
1443 {
1444 	return false;
1445 }
1446 #endif
1447 
1448 /*
1449  * Check of disabled HDMI controller by vga_switcheroo
1450  */
1451 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1452 {
1453 	struct pci_dev *p;
1454 
1455 	/* check only discrete GPU */
1456 	switch (pci->vendor) {
1457 	case PCI_VENDOR_ID_ATI:
1458 	case PCI_VENDOR_ID_AMD:
1459 		if (pci->devfn == 1) {
1460 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1461 							pci->bus->number, 0);
1462 			if (p) {
1463 				/* ATPX is in the integrated GPU's ACPI namespace
1464 				 * rather than the dGPU's namespace. However,
1465 				 * the dGPU is the one who is involved in
1466 				 * vgaswitcheroo.
1467 				 */
1468 				if (((p->class >> 16) == PCI_BASE_CLASS_DISPLAY) &&
1469 				    atpx_present())
1470 					return p;
1471 				pci_dev_put(p);
1472 			}
1473 		}
1474 		break;
1475 	case PCI_VENDOR_ID_NVIDIA:
1476 		if (pci->devfn == 1) {
1477 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1478 							pci->bus->number, 0);
1479 			if (p) {
1480 				if ((p->class >> 16) == PCI_BASE_CLASS_DISPLAY)
1481 					return p;
1482 				pci_dev_put(p);
1483 			}
1484 		}
1485 		break;
1486 	}
1487 	return NULL;
1488 }
1489 
1490 static bool check_hdmi_disabled(struct pci_dev *pci)
1491 {
1492 	bool vga_inactive = false;
1493 	struct pci_dev *p = get_bound_vga(pci);
1494 
1495 	if (p) {
1496 		if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1497 			vga_inactive = true;
1498 		pci_dev_put(p);
1499 	}
1500 	return vga_inactive;
1501 }
1502 #endif /* SUPPORT_VGA_SWITCHEROO */
1503 
1504 /*
1505  * allow/deny-listing for position_fix
1506  */
1507 static const struct snd_pci_quirk position_fix_list[] = {
1508 	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1509 	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1510 	SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1511 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1512 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1513 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1514 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1515 	SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1516 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1517 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1518 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1519 	SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1520 	SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1521 	SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1522 	{}
1523 };
1524 
1525 static int check_position_fix(struct azx *chip, int fix)
1526 {
1527 	const struct snd_pci_quirk *q;
1528 
1529 	switch (fix) {
1530 	case POS_FIX_AUTO:
1531 	case POS_FIX_LPIB:
1532 	case POS_FIX_POSBUF:
1533 	case POS_FIX_VIACOMBO:
1534 	case POS_FIX_COMBO:
1535 	case POS_FIX_SKL:
1536 	case POS_FIX_FIFO:
1537 		return fix;
1538 	}
1539 
1540 	q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1541 	if (q) {
1542 		dev_info(chip->card->dev,
1543 			 "position_fix set to %d for device %04x:%04x\n",
1544 			 q->value, q->subvendor, q->subdevice);
1545 		return q->value;
1546 	}
1547 
1548 	/* Check VIA/ATI HD Audio Controller exist */
1549 	if (chip->driver_type == AZX_DRIVER_VIA) {
1550 		dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1551 		return POS_FIX_VIACOMBO;
1552 	}
1553 	if (chip->driver_caps & AZX_DCAPS_AMD_WORKAROUND) {
1554 		dev_dbg(chip->card->dev, "Using FIFO position fix\n");
1555 		return POS_FIX_FIFO;
1556 	}
1557 	if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1558 		dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1559 		return POS_FIX_LPIB;
1560 	}
1561 	if (chip->driver_type == AZX_DRIVER_SKL) {
1562 		dev_dbg(chip->card->dev, "Using SKL position fix\n");
1563 		return POS_FIX_SKL;
1564 	}
1565 	return POS_FIX_AUTO;
1566 }
1567 
1568 static void assign_position_fix(struct azx *chip, int fix)
1569 {
1570 	static const azx_get_pos_callback_t callbacks[] = {
1571 		[POS_FIX_AUTO] = NULL,
1572 		[POS_FIX_LPIB] = azx_get_pos_lpib,
1573 		[POS_FIX_POSBUF] = azx_get_pos_posbuf,
1574 		[POS_FIX_VIACOMBO] = azx_via_get_position,
1575 		[POS_FIX_COMBO] = azx_get_pos_lpib,
1576 		[POS_FIX_SKL] = azx_get_pos_skl,
1577 		[POS_FIX_FIFO] = azx_get_pos_fifo,
1578 	};
1579 
1580 	chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1581 
1582 	/* combo mode uses LPIB only for playback */
1583 	if (fix == POS_FIX_COMBO)
1584 		chip->get_position[1] = NULL;
1585 
1586 	if ((fix == POS_FIX_POSBUF || fix == POS_FIX_SKL) &&
1587 	    (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1588 		chip->get_delay[0] = chip->get_delay[1] =
1589 			azx_get_delay_from_lpib;
1590 	}
1591 
1592 	if (fix == POS_FIX_FIFO)
1593 		chip->get_delay[0] = chip->get_delay[1] =
1594 			azx_get_delay_from_fifo;
1595 }
1596 
1597 /*
1598  * deny-lists for probe_mask
1599  */
1600 static const struct snd_pci_quirk probe_mask_list[] = {
1601 	/* Thinkpad often breaks the controller communication when accessing
1602 	 * to the non-working (or non-existing) modem codec slot.
1603 	 */
1604 	SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1605 	SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1606 	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1607 	/* broken BIOS */
1608 	SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1609 	/* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1610 	SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1611 	/* forced codec slots */
1612 	SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1613 	SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1614 	/* WinFast VP200 H (Teradici) user reported broken communication */
1615 	SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1616 	{}
1617 };
1618 
1619 #define AZX_FORCE_CODEC_MASK	0x100
1620 
1621 static void check_probe_mask(struct azx *chip, int dev)
1622 {
1623 	const struct snd_pci_quirk *q;
1624 
1625 	chip->codec_probe_mask = probe_mask[dev];
1626 	if (chip->codec_probe_mask == -1) {
1627 		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1628 		if (q) {
1629 			dev_info(chip->card->dev,
1630 				 "probe_mask set to 0x%x for device %04x:%04x\n",
1631 				 q->value, q->subvendor, q->subdevice);
1632 			chip->codec_probe_mask = q->value;
1633 		}
1634 	}
1635 
1636 	/* check forced option */
1637 	if (chip->codec_probe_mask != -1 &&
1638 	    (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1639 		azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
1640 		dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1641 			 (int)azx_bus(chip)->codec_mask);
1642 	}
1643 }
1644 
1645 /*
1646  * allow/deny-list for enable_msi
1647  */
1648 static const struct snd_pci_quirk msi_deny_list[] = {
1649 	SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1650 	SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1651 	SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1652 	SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1653 	SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1654 	SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1655 	SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1656 	SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1657 	SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1658 	SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1659 	{}
1660 };
1661 
1662 static void check_msi(struct azx *chip)
1663 {
1664 	const struct snd_pci_quirk *q;
1665 
1666 	if (enable_msi >= 0) {
1667 		chip->msi = !!enable_msi;
1668 		return;
1669 	}
1670 	chip->msi = 1;	/* enable MSI as default */
1671 	q = snd_pci_quirk_lookup(chip->pci, msi_deny_list);
1672 	if (q) {
1673 		dev_info(chip->card->dev,
1674 			 "msi for device %04x:%04x set to %d\n",
1675 			 q->subvendor, q->subdevice, q->value);
1676 		chip->msi = q->value;
1677 		return;
1678 	}
1679 
1680 	/* NVidia chipsets seem to cause troubles with MSI */
1681 	if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1682 		dev_info(chip->card->dev, "Disabling MSI\n");
1683 		chip->msi = 0;
1684 	}
1685 }
1686 
1687 /* check the snoop mode availability */
1688 static void azx_check_snoop_available(struct azx *chip)
1689 {
1690 	int snoop = hda_snoop;
1691 
1692 	if (snoop >= 0) {
1693 		dev_info(chip->card->dev, "Force to %s mode by module option\n",
1694 			 snoop ? "snoop" : "non-snoop");
1695 		chip->snoop = snoop;
1696 		chip->uc_buffer = !snoop;
1697 		return;
1698 	}
1699 
1700 	snoop = true;
1701 	if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
1702 	    chip->driver_type == AZX_DRIVER_VIA) {
1703 		/* force to non-snoop mode for a new VIA controller
1704 		 * when BIOS is set
1705 		 */
1706 		u8 val;
1707 		pci_read_config_byte(chip->pci, 0x42, &val);
1708 		if (!(val & 0x80) && (chip->pci->revision == 0x30 ||
1709 				      chip->pci->revision == 0x20))
1710 			snoop = false;
1711 	}
1712 
1713 	if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
1714 		snoop = false;
1715 
1716 	chip->snoop = snoop;
1717 	if (!snoop) {
1718 		dev_info(chip->card->dev, "Force to non-snoop mode\n");
1719 		/* C-Media requires non-cached pages only for CORB/RIRB */
1720 		if (chip->driver_type != AZX_DRIVER_CMEDIA)
1721 			chip->uc_buffer = true;
1722 	}
1723 }
1724 
1725 static void azx_probe_work(struct work_struct *work)
1726 {
1727 	struct hda_intel *hda = container_of(work, struct hda_intel, probe_work);
1728 	azx_probe_continue(&hda->chip);
1729 }
1730 
1731 static int default_bdl_pos_adj(struct azx *chip)
1732 {
1733 	/* some exceptions: Atoms seem problematic with value 1 */
1734 	if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
1735 		switch (chip->pci->device) {
1736 		case 0x0f04: /* Baytrail */
1737 		case 0x2284: /* Braswell */
1738 			return 32;
1739 		}
1740 	}
1741 
1742 	switch (chip->driver_type) {
1743 	case AZX_DRIVER_ICH:
1744 	case AZX_DRIVER_PCH:
1745 		return 1;
1746 	default:
1747 		return 32;
1748 	}
1749 }
1750 
1751 /*
1752  * constructor
1753  */
1754 static const struct hda_controller_ops pci_hda_ops;
1755 
1756 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1757 		      int dev, unsigned int driver_caps,
1758 		      struct azx **rchip)
1759 {
1760 	static const struct snd_device_ops ops = {
1761 		.dev_disconnect = azx_dev_disconnect,
1762 		.dev_free = azx_dev_free,
1763 	};
1764 	struct hda_intel *hda;
1765 	struct azx *chip;
1766 	int err;
1767 
1768 	*rchip = NULL;
1769 
1770 	err = pci_enable_device(pci);
1771 	if (err < 0)
1772 		return err;
1773 
1774 	hda = devm_kzalloc(&pci->dev, sizeof(*hda), GFP_KERNEL);
1775 	if (!hda) {
1776 		pci_disable_device(pci);
1777 		return -ENOMEM;
1778 	}
1779 
1780 	chip = &hda->chip;
1781 	mutex_init(&chip->open_mutex);
1782 	chip->card = card;
1783 	chip->pci = pci;
1784 	chip->ops = &pci_hda_ops;
1785 	chip->driver_caps = driver_caps;
1786 	chip->driver_type = driver_caps & 0xff;
1787 	check_msi(chip);
1788 	chip->dev_index = dev;
1789 	if (jackpoll_ms[dev] >= 50 && jackpoll_ms[dev] <= 60000)
1790 		chip->jackpoll_interval = msecs_to_jiffies(jackpoll_ms[dev]);
1791 	INIT_LIST_HEAD(&chip->pcm_list);
1792 	INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1793 	INIT_LIST_HEAD(&hda->list);
1794 	init_vga_switcheroo(chip);
1795 	init_completion(&hda->probe_wait);
1796 
1797 	assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1798 
1799 	check_probe_mask(chip, dev);
1800 
1801 	if (single_cmd < 0) /* allow fallback to single_cmd at errors */
1802 		chip->fallback_to_single_cmd = 1;
1803 	else /* explicitly set to single_cmd or not */
1804 		chip->single_cmd = single_cmd;
1805 
1806 	azx_check_snoop_available(chip);
1807 
1808 	if (bdl_pos_adj[dev] < 0)
1809 		chip->bdl_pos_adj = default_bdl_pos_adj(chip);
1810 	else
1811 		chip->bdl_pos_adj = bdl_pos_adj[dev];
1812 
1813 	err = azx_bus_init(chip, model[dev]);
1814 	if (err < 0) {
1815 		pci_disable_device(pci);
1816 		return err;
1817 	}
1818 
1819 	/* use the non-cached pages in non-snoop mode */
1820 	if (!azx_snoop(chip))
1821 		azx_bus(chip)->dma_type = SNDRV_DMA_TYPE_DEV_UC;
1822 
1823 	if (chip->driver_type == AZX_DRIVER_NVIDIA) {
1824 		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
1825 		chip->bus.core.needs_damn_long_delay = 1;
1826 	}
1827 
1828 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1829 	if (err < 0) {
1830 		dev_err(card->dev, "Error creating device [card]!\n");
1831 		azx_free(chip);
1832 		return err;
1833 	}
1834 
1835 	/* continue probing in work context as may trigger request module */
1836 	INIT_WORK(&hda->probe_work, azx_probe_work);
1837 
1838 	*rchip = chip;
1839 
1840 	return 0;
1841 }
1842 
1843 static int azx_first_init(struct azx *chip)
1844 {
1845 	int dev = chip->dev_index;
1846 	struct pci_dev *pci = chip->pci;
1847 	struct snd_card *card = chip->card;
1848 	struct hdac_bus *bus = azx_bus(chip);
1849 	int err;
1850 	unsigned short gcap;
1851 	unsigned int dma_bits = 64;
1852 
1853 #if BITS_PER_LONG != 64
1854 	/* Fix up base address on ULI M5461 */
1855 	if (chip->driver_type == AZX_DRIVER_ULI) {
1856 		u16 tmp3;
1857 		pci_read_config_word(pci, 0x40, &tmp3);
1858 		pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1859 		pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1860 	}
1861 #endif
1862 
1863 	err = pci_request_regions(pci, "ICH HD audio");
1864 	if (err < 0)
1865 		return err;
1866 	chip->region_requested = 1;
1867 
1868 	bus->addr = pci_resource_start(pci, 0);
1869 	bus->remap_addr = pci_ioremap_bar(pci, 0);
1870 	if (bus->remap_addr == NULL) {
1871 		dev_err(card->dev, "ioremap error\n");
1872 		return -ENXIO;
1873 	}
1874 
1875 	if (chip->driver_type == AZX_DRIVER_SKL)
1876 		snd_hdac_bus_parse_capabilities(bus);
1877 
1878 	/*
1879 	 * Some Intel CPUs has always running timer (ART) feature and
1880 	 * controller may have Global time sync reporting capability, so
1881 	 * check both of these before declaring synchronized time reporting
1882 	 * capability SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME
1883 	 */
1884 	chip->gts_present = false;
1885 
1886 #ifdef CONFIG_X86
1887 	if (bus->ppcap && boot_cpu_has(X86_FEATURE_ART))
1888 		chip->gts_present = true;
1889 #endif
1890 
1891 	if (chip->msi) {
1892 		if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
1893 			dev_dbg(card->dev, "Disabling 64bit MSI\n");
1894 			pci->no_64bit_msi = true;
1895 		}
1896 		if (pci_enable_msi(pci) < 0)
1897 			chip->msi = 0;
1898 	}
1899 
1900 	pci_set_master(pci);
1901 
1902 	gcap = azx_readw(chip, GCAP);
1903 	dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1904 
1905 	/* AMD devices support 40 or 48bit DMA, take the safe one */
1906 	if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
1907 		dma_bits = 40;
1908 
1909 	/* disable SB600 64bit support for safety */
1910 	if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1911 		struct pci_dev *p_smbus;
1912 		dma_bits = 40;
1913 		p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1914 					 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1915 					 NULL);
1916 		if (p_smbus) {
1917 			if (p_smbus->revision < 0x30)
1918 				gcap &= ~AZX_GCAP_64OK;
1919 			pci_dev_put(p_smbus);
1920 		}
1921 	}
1922 
1923 	/* NVidia hardware normally only supports up to 40 bits of DMA */
1924 	if (chip->pci->vendor == PCI_VENDOR_ID_NVIDIA)
1925 		dma_bits = 40;
1926 
1927 	/* disable 64bit DMA address on some devices */
1928 	if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1929 		dev_dbg(card->dev, "Disabling 64bit DMA\n");
1930 		gcap &= ~AZX_GCAP_64OK;
1931 	}
1932 
1933 	/* disable buffer size rounding to 128-byte multiples if supported */
1934 	if (align_buffer_size >= 0)
1935 		chip->align_buffer_size = !!align_buffer_size;
1936 	else {
1937 		if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
1938 			chip->align_buffer_size = 0;
1939 		else
1940 			chip->align_buffer_size = 1;
1941 	}
1942 
1943 	/* allow 64bit DMA address if supported by H/W */
1944 	if (!(gcap & AZX_GCAP_64OK))
1945 		dma_bits = 32;
1946 	if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(dma_bits)))
1947 		dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32));
1948 
1949 	/* read number of streams from GCAP register instead of using
1950 	 * hardcoded value
1951 	 */
1952 	chip->capture_streams = (gcap >> 8) & 0x0f;
1953 	chip->playback_streams = (gcap >> 12) & 0x0f;
1954 	if (!chip->playback_streams && !chip->capture_streams) {
1955 		/* gcap didn't give any info, switching to old method */
1956 
1957 		switch (chip->driver_type) {
1958 		case AZX_DRIVER_ULI:
1959 			chip->playback_streams = ULI_NUM_PLAYBACK;
1960 			chip->capture_streams = ULI_NUM_CAPTURE;
1961 			break;
1962 		case AZX_DRIVER_ATIHDMI:
1963 		case AZX_DRIVER_ATIHDMI_NS:
1964 			chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1965 			chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1966 			break;
1967 		case AZX_DRIVER_GENERIC:
1968 		default:
1969 			chip->playback_streams = ICH6_NUM_PLAYBACK;
1970 			chip->capture_streams = ICH6_NUM_CAPTURE;
1971 			break;
1972 		}
1973 	}
1974 	chip->capture_index_offset = 0;
1975 	chip->playback_index_offset = chip->capture_streams;
1976 	chip->num_streams = chip->playback_streams + chip->capture_streams;
1977 
1978 	/* sanity check for the SDxCTL.STRM field overflow */
1979 	if (chip->num_streams > 15 &&
1980 	    (chip->driver_caps & AZX_DCAPS_SEPARATE_STREAM_TAG) == 0) {
1981 		dev_warn(chip->card->dev, "number of I/O streams is %d, "
1982 			 "forcing separate stream tags", chip->num_streams);
1983 		chip->driver_caps |= AZX_DCAPS_SEPARATE_STREAM_TAG;
1984 	}
1985 
1986 	/* initialize streams */
1987 	err = azx_init_streams(chip);
1988 	if (err < 0)
1989 		return err;
1990 
1991 	err = azx_alloc_stream_pages(chip);
1992 	if (err < 0)
1993 		return err;
1994 
1995 	/* initialize chip */
1996 	azx_init_pci(chip);
1997 
1998 	snd_hdac_i915_set_bclk(bus);
1999 
2000 	hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
2001 
2002 	/* codec detection */
2003 	if (!azx_bus(chip)->codec_mask) {
2004 		dev_err(card->dev, "no codecs found!\n");
2005 		/* keep running the rest for the runtime PM */
2006 	}
2007 
2008 	if (azx_acquire_irq(chip, 0) < 0)
2009 		return -EBUSY;
2010 
2011 	strcpy(card->driver, "HDA-Intel");
2012 	strscpy(card->shortname, driver_short_names[chip->driver_type],
2013 		sizeof(card->shortname));
2014 	snprintf(card->longname, sizeof(card->longname),
2015 		 "%s at 0x%lx irq %i",
2016 		 card->shortname, bus->addr, bus->irq);
2017 
2018 	return 0;
2019 }
2020 
2021 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2022 /* callback from request_firmware_nowait() */
2023 static void azx_firmware_cb(const struct firmware *fw, void *context)
2024 {
2025 	struct snd_card *card = context;
2026 	struct azx *chip = card->private_data;
2027 
2028 	if (fw)
2029 		chip->fw = fw;
2030 	else
2031 		dev_err(card->dev, "Cannot load firmware, continue without patching\n");
2032 	if (!chip->disabled) {
2033 		/* continue probing */
2034 		azx_probe_continue(chip);
2035 	}
2036 }
2037 #endif
2038 
2039 static int disable_msi_reset_irq(struct azx *chip)
2040 {
2041 	struct hdac_bus *bus = azx_bus(chip);
2042 	int err;
2043 
2044 	free_irq(bus->irq, chip);
2045 	bus->irq = -1;
2046 	chip->card->sync_irq = -1;
2047 	pci_disable_msi(chip->pci);
2048 	chip->msi = 0;
2049 	err = azx_acquire_irq(chip, 1);
2050 	if (err < 0)
2051 		return err;
2052 
2053 	return 0;
2054 }
2055 
2056 static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
2057 			     struct vm_area_struct *area)
2058 {
2059 #ifdef CONFIG_X86
2060 	struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
2061 	struct azx *chip = apcm->chip;
2062 	if (chip->uc_buffer)
2063 		area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
2064 #endif
2065 }
2066 
2067 /* Denylist for skipping the whole probe:
2068  * some HD-audio PCI entries are exposed without any codecs, and such devices
2069  * should be ignored from the beginning.
2070  */
2071 static const struct pci_device_id driver_denylist[] = {
2072 	{ PCI_DEVICE_SUB(0x1022, 0x1487, 0x1043, 0x874f) }, /* ASUS ROG Zenith II / Strix */
2073 	{ PCI_DEVICE_SUB(0x1022, 0x1487, 0x1462, 0xcb59) }, /* MSI TRX40 Creator */
2074 	{ PCI_DEVICE_SUB(0x1022, 0x1487, 0x1462, 0xcb60) }, /* MSI TRX40 */
2075 	{}
2076 };
2077 
2078 static const struct hda_controller_ops pci_hda_ops = {
2079 	.disable_msi_reset_irq = disable_msi_reset_irq,
2080 	.pcm_mmap_prepare = pcm_mmap_prepare,
2081 	.position_check = azx_position_check,
2082 };
2083 
2084 static int azx_probe(struct pci_dev *pci,
2085 		     const struct pci_device_id *pci_id)
2086 {
2087 	static int dev;
2088 	struct snd_card *card;
2089 	struct hda_intel *hda;
2090 	struct azx *chip;
2091 	bool schedule_probe;
2092 	int err;
2093 
2094 	if (pci_match_id(driver_denylist, pci)) {
2095 		dev_info(&pci->dev, "Skipping the device on the denylist\n");
2096 		return -ENODEV;
2097 	}
2098 
2099 	if (dev >= SNDRV_CARDS)
2100 		return -ENODEV;
2101 	if (!enable[dev]) {
2102 		dev++;
2103 		return -ENOENT;
2104 	}
2105 
2106 	/*
2107 	 * stop probe if another Intel's DSP driver should be activated
2108 	 */
2109 	if (dmic_detect) {
2110 		err = snd_intel_dsp_driver_probe(pci);
2111 		if (err != SND_INTEL_DSP_DRIVER_ANY && err != SND_INTEL_DSP_DRIVER_LEGACY) {
2112 			dev_dbg(&pci->dev, "HDAudio driver not selected, aborting probe\n");
2113 			return -ENODEV;
2114 		}
2115 	} else {
2116 		dev_warn(&pci->dev, "dmic_detect option is deprecated, pass snd-intel-dspcfg.dsp_driver=1 option instead\n");
2117 	}
2118 
2119 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2120 			   0, &card);
2121 	if (err < 0) {
2122 		dev_err(&pci->dev, "Error creating card!\n");
2123 		return err;
2124 	}
2125 
2126 	err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
2127 	if (err < 0)
2128 		goto out_free;
2129 	card->private_data = chip;
2130 	hda = container_of(chip, struct hda_intel, chip);
2131 
2132 	pci_set_drvdata(pci, card);
2133 
2134 	err = register_vga_switcheroo(chip);
2135 	if (err < 0) {
2136 		dev_err(card->dev, "Error registering vga_switcheroo client\n");
2137 		goto out_free;
2138 	}
2139 
2140 	if (check_hdmi_disabled(pci)) {
2141 		dev_info(card->dev, "VGA controller is disabled\n");
2142 		dev_info(card->dev, "Delaying initialization\n");
2143 		chip->disabled = true;
2144 	}
2145 
2146 	schedule_probe = !chip->disabled;
2147 
2148 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2149 	if (patch[dev] && *patch[dev]) {
2150 		dev_info(card->dev, "Applying patch firmware '%s'\n",
2151 			 patch[dev]);
2152 		err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
2153 					      &pci->dev, GFP_KERNEL, card,
2154 					      azx_firmware_cb);
2155 		if (err < 0)
2156 			goto out_free;
2157 		schedule_probe = false; /* continued in azx_firmware_cb() */
2158 	}
2159 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
2160 
2161 #ifndef CONFIG_SND_HDA_I915
2162 	if (CONTROLLER_IN_GPU(pci))
2163 		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
2164 #endif
2165 
2166 	if (schedule_probe)
2167 		schedule_work(&hda->probe_work);
2168 
2169 	dev++;
2170 	if (chip->disabled)
2171 		complete_all(&hda->probe_wait);
2172 	return 0;
2173 
2174 out_free:
2175 	snd_card_free(card);
2176 	return err;
2177 }
2178 
2179 #ifdef CONFIG_PM
2180 /* On some boards setting power_save to a non 0 value leads to clicking /
2181  * popping sounds when ever we enter/leave powersaving mode. Ideally we would
2182  * figure out how to avoid these sounds, but that is not always feasible.
2183  * So we keep a list of devices where we disable powersaving as its known
2184  * to causes problems on these devices.
2185  */
2186 static const struct snd_pci_quirk power_save_denylist[] = {
2187 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2188 	SND_PCI_QUIRK(0x1849, 0xc892, "Asrock B85M-ITX", 0),
2189 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2190 	SND_PCI_QUIRK(0x1849, 0x0397, "Asrock N68C-S UCC", 0),
2191 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2192 	SND_PCI_QUIRK(0x1849, 0x7662, "Asrock H81M-HDS", 0),
2193 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2194 	SND_PCI_QUIRK(0x1043, 0x8733, "Asus Prime X370-Pro", 0),
2195 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2196 	SND_PCI_QUIRK(0x1028, 0x0497, "Dell Precision T3600", 0),
2197 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2198 	/* Note the P55A-UD3 and Z87-D3HP share the subsys id for the HDA dev */
2199 	SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte P55A-UD3 / Z87-D3HP", 0),
2200 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2201 	SND_PCI_QUIRK(0x8086, 0x2040, "Intel DZ77BH-55K", 0),
2202 	/* https://bugzilla.kernel.org/show_bug.cgi?id=199607 */
2203 	SND_PCI_QUIRK(0x8086, 0x2057, "Intel NUC5i7RYB", 0),
2204 	/* https://bugs.launchpad.net/bugs/1821663 */
2205 	SND_PCI_QUIRK(0x8086, 0x2064, "Intel SDP 8086:2064", 0),
2206 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1520902 */
2207 	SND_PCI_QUIRK(0x8086, 0x2068, "Intel NUC7i3BNB", 0),
2208 	/* https://bugzilla.kernel.org/show_bug.cgi?id=198611 */
2209 	SND_PCI_QUIRK(0x17aa, 0x2227, "Lenovo X1 Carbon 3rd Gen", 0),
2210 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1689623 */
2211 	SND_PCI_QUIRK(0x17aa, 0x367b, "Lenovo IdeaCentre B550", 0),
2212 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1572975 */
2213 	SND_PCI_QUIRK(0x17aa, 0x36a7, "Lenovo C50 All in one", 0),
2214 	/* https://bugs.launchpad.net/bugs/1821663 */
2215 	SND_PCI_QUIRK(0x1631, 0xe017, "Packard Bell NEC IMEDIA 5204", 0),
2216 	{}
2217 };
2218 #endif /* CONFIG_PM */
2219 
2220 static void set_default_power_save(struct azx *chip)
2221 {
2222 	int val = power_save;
2223 
2224 #ifdef CONFIG_PM
2225 	if (pm_blacklist) {
2226 		const struct snd_pci_quirk *q;
2227 
2228 		q = snd_pci_quirk_lookup(chip->pci, power_save_denylist);
2229 		if (q && val) {
2230 			dev_info(chip->card->dev, "device %04x:%04x is on the power_save denylist, forcing power_save to 0\n",
2231 				 q->subvendor, q->subdevice);
2232 			val = 0;
2233 		}
2234 	}
2235 #endif /* CONFIG_PM */
2236 	snd_hda_set_power_save(&chip->bus, val * 1000);
2237 }
2238 
2239 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
2240 static const unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
2241 	[AZX_DRIVER_NVIDIA] = 8,
2242 	[AZX_DRIVER_TERA] = 1,
2243 };
2244 
2245 static int azx_probe_continue(struct azx *chip)
2246 {
2247 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
2248 	struct hdac_bus *bus = azx_bus(chip);
2249 	struct pci_dev *pci = chip->pci;
2250 	int dev = chip->dev_index;
2251 	int err;
2252 
2253 	to_hda_bus(bus)->bus_probing = 1;
2254 	hda->probe_continued = 1;
2255 
2256 	/* bind with i915 if needed */
2257 	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
2258 		err = snd_hdac_i915_init(bus);
2259 		if (err < 0) {
2260 			/* if the controller is bound only with HDMI/DP
2261 			 * (for HSW and BDW), we need to abort the probe;
2262 			 * for other chips, still continue probing as other
2263 			 * codecs can be on the same link.
2264 			 */
2265 			if (CONTROLLER_IN_GPU(pci)) {
2266 				dev_err(chip->card->dev,
2267 					"HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
2268 				goto out_free;
2269 			} else {
2270 				/* don't bother any longer */
2271 				chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
2272 			}
2273 		}
2274 
2275 		/* HSW/BDW controllers need this power */
2276 		if (CONTROLLER_IN_GPU(pci))
2277 			hda->need_i915_power = true;
2278 	}
2279 
2280 	/* Request display power well for the HDA controller or codec. For
2281 	 * Haswell/Broadwell, both the display HDA controller and codec need
2282 	 * this power. For other platforms, like Baytrail/Braswell, only the
2283 	 * display codec needs the power and it can be released after probe.
2284 	 */
2285 	display_power(chip, true);
2286 
2287 	err = azx_first_init(chip);
2288 	if (err < 0)
2289 		goto out_free;
2290 
2291 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2292 	chip->beep_mode = beep_mode[dev];
2293 #endif
2294 
2295 	/* create codec instances */
2296 	if (bus->codec_mask) {
2297 		err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
2298 		if (err < 0)
2299 			goto out_free;
2300 	}
2301 
2302 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2303 	if (chip->fw) {
2304 		err = snd_hda_load_patch(&chip->bus, chip->fw->size,
2305 					 chip->fw->data);
2306 		if (err < 0)
2307 			goto out_free;
2308 #ifndef CONFIG_PM
2309 		release_firmware(chip->fw); /* no longer needed */
2310 		chip->fw = NULL;
2311 #endif
2312 	}
2313 #endif
2314 	if (bus->codec_mask && !(probe_only[dev] & 1)) {
2315 		err = azx_codec_configure(chip);
2316 		if (err < 0)
2317 			goto out_free;
2318 	}
2319 
2320 	err = snd_card_register(chip->card);
2321 	if (err < 0)
2322 		goto out_free;
2323 
2324 	setup_vga_switcheroo_runtime_pm(chip);
2325 
2326 	chip->running = 1;
2327 	azx_add_card_list(chip);
2328 
2329 	set_default_power_save(chip);
2330 
2331 	if (azx_has_pm_runtime(chip)) {
2332 		pm_runtime_use_autosuspend(&pci->dev);
2333 		pm_runtime_allow(&pci->dev);
2334 		pm_runtime_put_autosuspend(&pci->dev);
2335 	}
2336 
2337 out_free:
2338 	if (err < 0) {
2339 		azx_free(chip);
2340 		return err;
2341 	}
2342 
2343 	if (!hda->need_i915_power)
2344 		display_power(chip, false);
2345 	complete_all(&hda->probe_wait);
2346 	to_hda_bus(bus)->bus_probing = 0;
2347 	return 0;
2348 }
2349 
2350 static void azx_remove(struct pci_dev *pci)
2351 {
2352 	struct snd_card *card = pci_get_drvdata(pci);
2353 	struct azx *chip;
2354 	struct hda_intel *hda;
2355 
2356 	if (card) {
2357 		/* cancel the pending probing work */
2358 		chip = card->private_data;
2359 		hda = container_of(chip, struct hda_intel, chip);
2360 		/* FIXME: below is an ugly workaround.
2361 		 * Both device_release_driver() and driver_probe_device()
2362 		 * take *both* the device's and its parent's lock before
2363 		 * calling the remove() and probe() callbacks.  The codec
2364 		 * probe takes the locks of both the codec itself and its
2365 		 * parent, i.e. the PCI controller dev.  Meanwhile, when
2366 		 * the PCI controller is unbound, it takes its lock, too
2367 		 * ==> ouch, a deadlock!
2368 		 * As a workaround, we unlock temporarily here the controller
2369 		 * device during cancel_work_sync() call.
2370 		 */
2371 		device_unlock(&pci->dev);
2372 		cancel_work_sync(&hda->probe_work);
2373 		device_lock(&pci->dev);
2374 
2375 		snd_card_free(card);
2376 	}
2377 }
2378 
2379 static void azx_shutdown(struct pci_dev *pci)
2380 {
2381 	struct snd_card *card = pci_get_drvdata(pci);
2382 	struct azx *chip;
2383 
2384 	if (!card)
2385 		return;
2386 	chip = card->private_data;
2387 	if (chip && chip->running)
2388 		azx_stop_chip(chip);
2389 }
2390 
2391 /* PCI IDs */
2392 static const struct pci_device_id azx_ids[] = {
2393 	/* CPT */
2394 	{ PCI_DEVICE(0x8086, 0x1c20),
2395 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2396 	/* PBG */
2397 	{ PCI_DEVICE(0x8086, 0x1d20),
2398 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2399 	/* Panther Point */
2400 	{ PCI_DEVICE(0x8086, 0x1e20),
2401 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2402 	/* Lynx Point */
2403 	{ PCI_DEVICE(0x8086, 0x8c20),
2404 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2405 	/* 9 Series */
2406 	{ PCI_DEVICE(0x8086, 0x8ca0),
2407 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2408 	/* Wellsburg */
2409 	{ PCI_DEVICE(0x8086, 0x8d20),
2410 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2411 	{ PCI_DEVICE(0x8086, 0x8d21),
2412 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2413 	/* Lewisburg */
2414 	{ PCI_DEVICE(0x8086, 0xa1f0),
2415 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2416 	{ PCI_DEVICE(0x8086, 0xa270),
2417 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2418 	/* Lynx Point-LP */
2419 	{ PCI_DEVICE(0x8086, 0x9c20),
2420 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2421 	/* Lynx Point-LP */
2422 	{ PCI_DEVICE(0x8086, 0x9c21),
2423 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2424 	/* Wildcat Point-LP */
2425 	{ PCI_DEVICE(0x8086, 0x9ca0),
2426 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2427 	/* Sunrise Point */
2428 	{ PCI_DEVICE(0x8086, 0xa170),
2429 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2430 	/* Sunrise Point-LP */
2431 	{ PCI_DEVICE(0x8086, 0x9d70),
2432 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2433 	/* Kabylake */
2434 	{ PCI_DEVICE(0x8086, 0xa171),
2435 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2436 	/* Kabylake-LP */
2437 	{ PCI_DEVICE(0x8086, 0x9d71),
2438 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2439 	/* Kabylake-H */
2440 	{ PCI_DEVICE(0x8086, 0xa2f0),
2441 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2442 	/* Coffelake */
2443 	{ PCI_DEVICE(0x8086, 0xa348),
2444 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2445 	/* Cannonlake */
2446 	{ PCI_DEVICE(0x8086, 0x9dc8),
2447 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2448 	/* CometLake-LP */
2449 	{ PCI_DEVICE(0x8086, 0x02C8),
2450 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2451 	/* CometLake-H */
2452 	{ PCI_DEVICE(0x8086, 0x06C8),
2453 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2454 	{ PCI_DEVICE(0x8086, 0xf1c8),
2455 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2456 	/* CometLake-S */
2457 	{ PCI_DEVICE(0x8086, 0xa3f0),
2458 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2459 	/* CometLake-R */
2460 	{ PCI_DEVICE(0x8086, 0xf0c8),
2461 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2462 	/* Icelake */
2463 	{ PCI_DEVICE(0x8086, 0x34c8),
2464 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2465 	/* Icelake-H */
2466 	{ PCI_DEVICE(0x8086, 0x3dc8),
2467 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2468 	/* Jasperlake */
2469 	{ PCI_DEVICE(0x8086, 0x38c8),
2470 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2471 	{ PCI_DEVICE(0x8086, 0x4dc8),
2472 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2473 	/* Tigerlake */
2474 	{ PCI_DEVICE(0x8086, 0xa0c8),
2475 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2476 	/* Tigerlake-H */
2477 	{ PCI_DEVICE(0x8086, 0x43c8),
2478 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2479 	/* DG1 */
2480 	{ PCI_DEVICE(0x8086, 0x490d),
2481 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2482 	/* Alderlake-S */
2483 	{ PCI_DEVICE(0x8086, 0x7ad0),
2484 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2485 	/* Alderlake-P */
2486 	{ PCI_DEVICE(0x8086, 0x51c8),
2487 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2488 	/* Elkhart Lake */
2489 	{ PCI_DEVICE(0x8086, 0x4b55),
2490 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2491 	{ PCI_DEVICE(0x8086, 0x4b58),
2492 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2493 	/* Broxton-P(Apollolake) */
2494 	{ PCI_DEVICE(0x8086, 0x5a98),
2495 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2496 	/* Broxton-T */
2497 	{ PCI_DEVICE(0x8086, 0x1a98),
2498 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2499 	/* Gemini-Lake */
2500 	{ PCI_DEVICE(0x8086, 0x3198),
2501 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2502 	/* Haswell */
2503 	{ PCI_DEVICE(0x8086, 0x0a0c),
2504 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2505 	{ PCI_DEVICE(0x8086, 0x0c0c),
2506 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2507 	{ PCI_DEVICE(0x8086, 0x0d0c),
2508 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2509 	/* Broadwell */
2510 	{ PCI_DEVICE(0x8086, 0x160c),
2511 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL },
2512 	/* 5 Series/3400 */
2513 	{ PCI_DEVICE(0x8086, 0x3b56),
2514 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2515 	/* Poulsbo */
2516 	{ PCI_DEVICE(0x8086, 0x811b),
2517 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2518 	/* Oaktrail */
2519 	{ PCI_DEVICE(0x8086, 0x080a),
2520 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2521 	/* BayTrail */
2522 	{ PCI_DEVICE(0x8086, 0x0f04),
2523 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL },
2524 	/* Braswell */
2525 	{ PCI_DEVICE(0x8086, 0x2284),
2526 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL },
2527 	/* ICH6 */
2528 	{ PCI_DEVICE(0x8086, 0x2668),
2529 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2530 	/* ICH7 */
2531 	{ PCI_DEVICE(0x8086, 0x27d8),
2532 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2533 	/* ESB2 */
2534 	{ PCI_DEVICE(0x8086, 0x269a),
2535 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2536 	/* ICH8 */
2537 	{ PCI_DEVICE(0x8086, 0x284b),
2538 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2539 	/* ICH9 */
2540 	{ PCI_DEVICE(0x8086, 0x293e),
2541 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2542 	/* ICH9 */
2543 	{ PCI_DEVICE(0x8086, 0x293f),
2544 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2545 	/* ICH10 */
2546 	{ PCI_DEVICE(0x8086, 0x3a3e),
2547 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2548 	/* ICH10 */
2549 	{ PCI_DEVICE(0x8086, 0x3a6e),
2550 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2551 	/* Generic Intel */
2552 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2553 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2554 	  .class_mask = 0xffffff,
2555 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
2556 	/* ATI SB 450/600/700/800/900 */
2557 	{ PCI_DEVICE(0x1002, 0x437b),
2558 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2559 	{ PCI_DEVICE(0x1002, 0x4383),
2560 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2561 	/* AMD Hudson */
2562 	{ PCI_DEVICE(0x1022, 0x780d),
2563 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2564 	/* AMD, X370 & co */
2565 	{ PCI_DEVICE(0x1022, 0x1457),
2566 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
2567 	/* AMD, X570 & co */
2568 	{ PCI_DEVICE(0x1022, 0x1487),
2569 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
2570 	/* AMD Stoney */
2571 	{ PCI_DEVICE(0x1022, 0x157a),
2572 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB |
2573 			 AZX_DCAPS_PM_RUNTIME },
2574 	/* AMD Raven */
2575 	{ PCI_DEVICE(0x1022, 0x15e3),
2576 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
2577 	/* ATI HDMI */
2578 	{ PCI_DEVICE(0x1002, 0x0002),
2579 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2580 	  AZX_DCAPS_PM_RUNTIME },
2581 	{ PCI_DEVICE(0x1002, 0x1308),
2582 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2583 	{ PCI_DEVICE(0x1002, 0x157a),
2584 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2585 	{ PCI_DEVICE(0x1002, 0x15b3),
2586 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2587 	{ PCI_DEVICE(0x1002, 0x793b),
2588 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2589 	{ PCI_DEVICE(0x1002, 0x7919),
2590 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2591 	{ PCI_DEVICE(0x1002, 0x960f),
2592 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2593 	{ PCI_DEVICE(0x1002, 0x970f),
2594 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2595 	{ PCI_DEVICE(0x1002, 0x9840),
2596 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2597 	{ PCI_DEVICE(0x1002, 0xaa00),
2598 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2599 	{ PCI_DEVICE(0x1002, 0xaa08),
2600 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2601 	{ PCI_DEVICE(0x1002, 0xaa10),
2602 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2603 	{ PCI_DEVICE(0x1002, 0xaa18),
2604 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2605 	{ PCI_DEVICE(0x1002, 0xaa20),
2606 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2607 	{ PCI_DEVICE(0x1002, 0xaa28),
2608 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2609 	{ PCI_DEVICE(0x1002, 0xaa30),
2610 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2611 	{ PCI_DEVICE(0x1002, 0xaa38),
2612 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2613 	{ PCI_DEVICE(0x1002, 0xaa40),
2614 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2615 	{ PCI_DEVICE(0x1002, 0xaa48),
2616 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2617 	{ PCI_DEVICE(0x1002, 0xaa50),
2618 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2619 	{ PCI_DEVICE(0x1002, 0xaa58),
2620 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2621 	{ PCI_DEVICE(0x1002, 0xaa60),
2622 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2623 	{ PCI_DEVICE(0x1002, 0xaa68),
2624 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2625 	{ PCI_DEVICE(0x1002, 0xaa80),
2626 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2627 	{ PCI_DEVICE(0x1002, 0xaa88),
2628 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2629 	{ PCI_DEVICE(0x1002, 0xaa90),
2630 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2631 	{ PCI_DEVICE(0x1002, 0xaa98),
2632 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2633 	{ PCI_DEVICE(0x1002, 0x9902),
2634 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2635 	{ PCI_DEVICE(0x1002, 0xaaa0),
2636 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2637 	{ PCI_DEVICE(0x1002, 0xaaa8),
2638 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2639 	{ PCI_DEVICE(0x1002, 0xaab0),
2640 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2641 	{ PCI_DEVICE(0x1002, 0xaac0),
2642 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2643 	  AZX_DCAPS_PM_RUNTIME },
2644 	{ PCI_DEVICE(0x1002, 0xaac8),
2645 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2646 	  AZX_DCAPS_PM_RUNTIME },
2647 	{ PCI_DEVICE(0x1002, 0xaad8),
2648 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2649 	  AZX_DCAPS_PM_RUNTIME },
2650 	{ PCI_DEVICE(0x1002, 0xaae0),
2651 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2652 	  AZX_DCAPS_PM_RUNTIME },
2653 	{ PCI_DEVICE(0x1002, 0xaae8),
2654 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2655 	  AZX_DCAPS_PM_RUNTIME },
2656 	{ PCI_DEVICE(0x1002, 0xaaf0),
2657 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2658 	  AZX_DCAPS_PM_RUNTIME },
2659 	{ PCI_DEVICE(0x1002, 0xaaf8),
2660 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2661 	  AZX_DCAPS_PM_RUNTIME },
2662 	{ PCI_DEVICE(0x1002, 0xab00),
2663 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2664 	  AZX_DCAPS_PM_RUNTIME },
2665 	{ PCI_DEVICE(0x1002, 0xab08),
2666 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2667 	  AZX_DCAPS_PM_RUNTIME },
2668 	{ PCI_DEVICE(0x1002, 0xab10),
2669 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2670 	  AZX_DCAPS_PM_RUNTIME },
2671 	{ PCI_DEVICE(0x1002, 0xab18),
2672 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2673 	  AZX_DCAPS_PM_RUNTIME },
2674 	{ PCI_DEVICE(0x1002, 0xab20),
2675 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2676 	  AZX_DCAPS_PM_RUNTIME },
2677 	{ PCI_DEVICE(0x1002, 0xab28),
2678 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2679 	  AZX_DCAPS_PM_RUNTIME },
2680 	{ PCI_DEVICE(0x1002, 0xab38),
2681 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2682 	  AZX_DCAPS_PM_RUNTIME },
2683 	/* VIA VT8251/VT8237A */
2684 	{ PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2685 	/* VIA GFX VT7122/VX900 */
2686 	{ PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2687 	/* VIA GFX VT6122/VX11 */
2688 	{ PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2689 	/* SIS966 */
2690 	{ PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2691 	/* ULI M5461 */
2692 	{ PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2693 	/* NVIDIA MCP */
2694 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2695 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2696 	  .class_mask = 0xffffff,
2697 	  .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2698 	/* Teradici */
2699 	{ PCI_DEVICE(0x6549, 0x1200),
2700 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2701 	{ PCI_DEVICE(0x6549, 0x2200),
2702 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2703 	/* Creative X-Fi (CA0110-IBG) */
2704 	/* CTHDA chips */
2705 	{ PCI_DEVICE(0x1102, 0x0010),
2706 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2707 	{ PCI_DEVICE(0x1102, 0x0012),
2708 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2709 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2710 	/* the following entry conflicts with snd-ctxfi driver,
2711 	 * as ctxfi driver mutates from HD-audio to native mode with
2712 	 * a special command sequence.
2713 	 */
2714 	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2715 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2716 	  .class_mask = 0xffffff,
2717 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2718 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2719 #else
2720 	/* this entry seems still valid -- i.e. without emu20kx chip */
2721 	{ PCI_DEVICE(0x1102, 0x0009),
2722 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2723 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2724 #endif
2725 	/* CM8888 */
2726 	{ PCI_DEVICE(0x13f6, 0x5011),
2727 	  .driver_data = AZX_DRIVER_CMEDIA |
2728 	  AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
2729 	/* Vortex86MX */
2730 	{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2731 	/* VMware HDAudio */
2732 	{ PCI_DEVICE(0x15ad, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2733 	/* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2734 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2735 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2736 	  .class_mask = 0xffffff,
2737 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2738 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2739 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2740 	  .class_mask = 0xffffff,
2741 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2742 	/* Zhaoxin */
2743 	{ PCI_DEVICE(0x1d17, 0x3288), .driver_data = AZX_DRIVER_ZHAOXIN },
2744 	{ 0, }
2745 };
2746 MODULE_DEVICE_TABLE(pci, azx_ids);
2747 
2748 /* pci_driver definition */
2749 static struct pci_driver azx_driver = {
2750 	.name = KBUILD_MODNAME,
2751 	.id_table = azx_ids,
2752 	.probe = azx_probe,
2753 	.remove = azx_remove,
2754 	.shutdown = azx_shutdown,
2755 	.driver = {
2756 		.pm = AZX_PM_OPS,
2757 	},
2758 };
2759 
2760 module_pci_driver(azx_driver);
2761