xref: /openbmc/linux/sound/pci/hda/hda_intel.c (revision 6db6b729)
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/apple-gmux.h>
54 #include <linux/firmware.h>
55 #include <sound/hda_codec.h>
56 #include "hda_controller.h"
57 #include "hda_intel.h"
58 
59 #define CREATE_TRACE_POINTS
60 #include "hda_intel_trace.h"
61 
62 /* position fix mode */
63 enum {
64 	POS_FIX_AUTO,
65 	POS_FIX_LPIB,
66 	POS_FIX_POSBUF,
67 	POS_FIX_VIACOMBO,
68 	POS_FIX_COMBO,
69 	POS_FIX_SKL,
70 	POS_FIX_FIFO,
71 };
72 
73 /* Defines for ATI HD Audio support in SB450 south bridge */
74 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
75 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
76 
77 /* Defines for Nvidia HDA support */
78 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
79 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
80 #define NVIDIA_HDA_ISTRM_COH          0x4d
81 #define NVIDIA_HDA_OSTRM_COH          0x4c
82 #define NVIDIA_HDA_ENABLE_COHBIT      0x01
83 
84 /* Defines for Intel SCH HDA snoop control */
85 #define INTEL_HDA_CGCTL	 0x48
86 #define INTEL_HDA_CGCTL_MISCBDCGE        (0x1 << 6)
87 #define INTEL_SCH_HDA_DEVC      0x78
88 #define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
89 
90 /* max number of SDs */
91 /* ICH, ATI and VIA have 4 playback and 4 capture */
92 #define ICH6_NUM_CAPTURE	4
93 #define ICH6_NUM_PLAYBACK	4
94 
95 /* ULI has 6 playback and 5 capture */
96 #define ULI_NUM_CAPTURE		5
97 #define ULI_NUM_PLAYBACK	6
98 
99 /* ATI HDMI may have up to 8 playbacks and 0 capture */
100 #define ATIHDMI_NUM_CAPTURE	0
101 #define ATIHDMI_NUM_PLAYBACK	8
102 
103 
104 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
105 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
106 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
107 static char *model[SNDRV_CARDS];
108 static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
109 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
110 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
111 static int probe_only[SNDRV_CARDS];
112 static int jackpoll_ms[SNDRV_CARDS];
113 static int single_cmd = -1;
114 static int enable_msi = -1;
115 #ifdef CONFIG_SND_HDA_PATCH_LOADER
116 static char *patch[SNDRV_CARDS];
117 #endif
118 #ifdef CONFIG_SND_HDA_INPUT_BEEP
119 static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
120 					CONFIG_SND_HDA_INPUT_BEEP_MODE};
121 #endif
122 static bool dmic_detect = 1;
123 static bool ctl_dev_id = IS_ENABLED(CONFIG_SND_HDA_CTL_DEV_ID) ? 1 : 0;
124 
125 module_param_array(index, int, NULL, 0444);
126 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
127 module_param_array(id, charp, NULL, 0444);
128 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
129 module_param_array(enable, bool, NULL, 0444);
130 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
131 module_param_array(model, charp, NULL, 0444);
132 MODULE_PARM_DESC(model, "Use the given board model.");
133 module_param_array(position_fix, int, NULL, 0444);
134 MODULE_PARM_DESC(position_fix, "DMA pointer read method."
135 		 "(-1 = system default, 0 = auto, 1 = LPIB, 2 = POSBUF, 3 = VIACOMBO, 4 = COMBO, 5 = SKL+, 6 = FIFO).");
136 module_param_array(bdl_pos_adj, int, NULL, 0644);
137 MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
138 module_param_array(probe_mask, int, NULL, 0444);
139 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
140 module_param_array(probe_only, int, NULL, 0444);
141 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
142 module_param_array(jackpoll_ms, int, NULL, 0444);
143 MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
144 module_param(single_cmd, bint, 0444);
145 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
146 		 "(for debugging only).");
147 module_param(enable_msi, bint, 0444);
148 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
149 #ifdef CONFIG_SND_HDA_PATCH_LOADER
150 module_param_array(patch, charp, NULL, 0444);
151 MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
152 #endif
153 #ifdef CONFIG_SND_HDA_INPUT_BEEP
154 module_param_array(beep_mode, bool, NULL, 0444);
155 MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
156 			    "(0=off, 1=on) (default=1).");
157 #endif
158 module_param(dmic_detect, bool, 0444);
159 MODULE_PARM_DESC(dmic_detect, "Allow DSP driver selection (bypass this driver) "
160 			     "(0=off, 1=on) (default=1); "
161 		 "deprecated, use snd-intel-dspcfg.dsp_driver option instead");
162 module_param(ctl_dev_id, bool, 0444);
163 MODULE_PARM_DESC(ctl_dev_id, "Use control device identifier (based on codec address).");
164 
165 #ifdef CONFIG_PM
166 static int param_set_xint(const char *val, const struct kernel_param *kp);
167 static const struct kernel_param_ops param_ops_xint = {
168 	.set = param_set_xint,
169 	.get = param_get_int,
170 };
171 #define param_check_xint param_check_int
172 
173 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
174 module_param(power_save, xint, 0644);
175 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
176 		 "(in second, 0 = disable).");
177 
178 static bool pm_blacklist = true;
179 module_param(pm_blacklist, bool, 0644);
180 MODULE_PARM_DESC(pm_blacklist, "Enable power-management denylist");
181 
182 /* reset the HD-audio controller in power save mode.
183  * this may give more power-saving, but will take longer time to
184  * wake up.
185  */
186 static bool power_save_controller = 1;
187 module_param(power_save_controller, bool, 0644);
188 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
189 #else
190 #define power_save	0
191 #endif /* CONFIG_PM */
192 
193 static int align_buffer_size = -1;
194 module_param(align_buffer_size, bint, 0644);
195 MODULE_PARM_DESC(align_buffer_size,
196 		"Force buffer and period sizes to be multiple of 128 bytes.");
197 
198 #ifdef CONFIG_X86
199 static int hda_snoop = -1;
200 module_param_named(snoop, hda_snoop, bint, 0444);
201 MODULE_PARM_DESC(snoop, "Enable/disable snooping");
202 #else
203 #define hda_snoop		true
204 #endif
205 
206 
207 MODULE_LICENSE("GPL");
208 MODULE_DESCRIPTION("Intel HDA driver");
209 
210 #if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
211 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
212 #define SUPPORT_VGA_SWITCHEROO
213 #endif
214 #endif
215 
216 
217 /*
218  */
219 
220 /* driver types */
221 enum {
222 	AZX_DRIVER_ICH,
223 	AZX_DRIVER_PCH,
224 	AZX_DRIVER_SCH,
225 	AZX_DRIVER_SKL,
226 	AZX_DRIVER_HDMI,
227 	AZX_DRIVER_ATI,
228 	AZX_DRIVER_ATIHDMI,
229 	AZX_DRIVER_ATIHDMI_NS,
230 	AZX_DRIVER_GFHDMI,
231 	AZX_DRIVER_VIA,
232 	AZX_DRIVER_SIS,
233 	AZX_DRIVER_ULI,
234 	AZX_DRIVER_NVIDIA,
235 	AZX_DRIVER_TERA,
236 	AZX_DRIVER_CTX,
237 	AZX_DRIVER_CTHDA,
238 	AZX_DRIVER_CMEDIA,
239 	AZX_DRIVER_ZHAOXIN,
240 	AZX_DRIVER_LOONGSON,
241 	AZX_DRIVER_GENERIC,
242 	AZX_NUM_DRIVERS, /* keep this as last entry */
243 };
244 
245 #define azx_get_snoop_type(chip) \
246 	(((chip)->driver_caps & AZX_DCAPS_SNOOP_MASK) >> 10)
247 #define AZX_DCAPS_SNOOP_TYPE(type) ((AZX_SNOOP_TYPE_ ## type) << 10)
248 
249 /* quirks for old Intel chipsets */
250 #define AZX_DCAPS_INTEL_ICH \
251 	(AZX_DCAPS_OLD_SSYNC | AZX_DCAPS_NO_ALIGN_BUFSIZE)
252 
253 /* quirks for Intel PCH */
254 #define AZX_DCAPS_INTEL_PCH_BASE \
255 	(AZX_DCAPS_NO_ALIGN_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
256 	 AZX_DCAPS_SNOOP_TYPE(SCH))
257 
258 /* PCH up to IVB; no runtime PM; bind with i915 gfx */
259 #define AZX_DCAPS_INTEL_PCH_NOPM \
260 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
261 
262 /* PCH for HSW/BDW; with runtime PM */
263 /* no i915 binding for this as HSW/BDW has another controller for HDMI */
264 #define AZX_DCAPS_INTEL_PCH \
265 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME)
266 
267 /* HSW HDMI */
268 #define AZX_DCAPS_INTEL_HASWELL \
269 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_COUNT_LPIB_DELAY |\
270 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
271 	 AZX_DCAPS_SNOOP_TYPE(SCH))
272 
273 /* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
274 #define AZX_DCAPS_INTEL_BROADWELL \
275 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_POSFIX_LPIB |\
276 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
277 	 AZX_DCAPS_SNOOP_TYPE(SCH))
278 
279 #define AZX_DCAPS_INTEL_BAYTRAIL \
280 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
281 
282 #define AZX_DCAPS_INTEL_BRASWELL \
283 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
284 	 AZX_DCAPS_I915_COMPONENT)
285 
286 #define AZX_DCAPS_INTEL_SKYLAKE \
287 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
288 	 AZX_DCAPS_SEPARATE_STREAM_TAG | AZX_DCAPS_I915_COMPONENT)
289 
290 #define AZX_DCAPS_INTEL_BROXTON		AZX_DCAPS_INTEL_SKYLAKE
291 
292 /* quirks for ATI SB / AMD Hudson */
293 #define AZX_DCAPS_PRESET_ATI_SB \
294 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_POSFIX_LPIB |\
295 	 AZX_DCAPS_SNOOP_TYPE(ATI))
296 
297 /* quirks for ATI/AMD HDMI */
298 #define AZX_DCAPS_PRESET_ATI_HDMI \
299 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_POSFIX_LPIB|\
300 	 AZX_DCAPS_NO_MSI64)
301 
302 /* quirks for ATI HDMI with snoop off */
303 #define AZX_DCAPS_PRESET_ATI_HDMI_NS \
304 	(AZX_DCAPS_PRESET_ATI_HDMI | AZX_DCAPS_SNOOP_OFF)
305 
306 /* quirks for AMD SB */
307 #define AZX_DCAPS_PRESET_AMD_SB \
308 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_AMD_WORKAROUND |\
309 	 AZX_DCAPS_SNOOP_TYPE(ATI) | AZX_DCAPS_PM_RUNTIME |\
310 	 AZX_DCAPS_RETRY_PROBE)
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 static const char * const driver_short_names[] = {
334 	[AZX_DRIVER_ICH] = "HDA Intel",
335 	[AZX_DRIVER_PCH] = "HDA Intel PCH",
336 	[AZX_DRIVER_SCH] = "HDA Intel MID",
337 	[AZX_DRIVER_SKL] = "HDA Intel PCH", /* kept old name for compatibility */
338 	[AZX_DRIVER_HDMI] = "HDA Intel HDMI",
339 	[AZX_DRIVER_ATI] = "HDA ATI SB",
340 	[AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
341 	[AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
342 	[AZX_DRIVER_GFHDMI] = "HDA GF HDMI",
343 	[AZX_DRIVER_VIA] = "HDA VIA VT82xx",
344 	[AZX_DRIVER_SIS] = "HDA SIS966",
345 	[AZX_DRIVER_ULI] = "HDA ULI M5461",
346 	[AZX_DRIVER_NVIDIA] = "HDA NVidia",
347 	[AZX_DRIVER_TERA] = "HDA Teradici",
348 	[AZX_DRIVER_CTX] = "HDA Creative",
349 	[AZX_DRIVER_CTHDA] = "HDA Creative",
350 	[AZX_DRIVER_CMEDIA] = "HDA C-Media",
351 	[AZX_DRIVER_ZHAOXIN] = "HDA Zhaoxin",
352 	[AZX_DRIVER_LOONGSON] = "HDA Loongson",
353 	[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
354 };
355 
356 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
357 static void set_default_power_save(struct azx *chip);
358 
359 /*
360  * initialize the PCI registers
361  */
362 /* update bits in a PCI register byte */
363 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
364 			    unsigned char mask, unsigned char val)
365 {
366 	unsigned char data;
367 
368 	pci_read_config_byte(pci, reg, &data);
369 	data &= ~mask;
370 	data |= (val & mask);
371 	pci_write_config_byte(pci, reg, data);
372 }
373 
374 static void azx_init_pci(struct azx *chip)
375 {
376 	int snoop_type = azx_get_snoop_type(chip);
377 
378 	/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
379 	 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
380 	 * Ensuring these bits are 0 clears playback static on some HD Audio
381 	 * codecs.
382 	 * The PCI register TCSEL is defined in the Intel manuals.
383 	 */
384 	if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
385 		dev_dbg(chip->card->dev, "Clearing TCSEL\n");
386 		update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
387 	}
388 
389 	/* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
390 	 * we need to enable snoop.
391 	 */
392 	if (snoop_type == AZX_SNOOP_TYPE_ATI) {
393 		dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
394 			azx_snoop(chip));
395 		update_pci_byte(chip->pci,
396 				ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
397 				azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
398 	}
399 
400 	/* For NVIDIA HDA, enable snoop */
401 	if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
402 		dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
403 			azx_snoop(chip));
404 		update_pci_byte(chip->pci,
405 				NVIDIA_HDA_TRANSREG_ADDR,
406 				0x0f, NVIDIA_HDA_ENABLE_COHBITS);
407 		update_pci_byte(chip->pci,
408 				NVIDIA_HDA_ISTRM_COH,
409 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
410 		update_pci_byte(chip->pci,
411 				NVIDIA_HDA_OSTRM_COH,
412 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
413 	}
414 
415 	/* Enable SCH/PCH snoop if needed */
416 	if (snoop_type == AZX_SNOOP_TYPE_SCH) {
417 		unsigned short snoop;
418 		pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
419 		if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
420 		    (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
421 			snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
422 			if (!azx_snoop(chip))
423 				snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
424 			pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
425 			pci_read_config_word(chip->pci,
426 				INTEL_SCH_HDA_DEVC, &snoop);
427 		}
428 		dev_dbg(chip->card->dev, "SCH snoop: %s\n",
429 			(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
430 			"Disabled" : "Enabled");
431         }
432 }
433 
434 /*
435  * In BXT-P A0, HD-Audio DMA requests is later than expected,
436  * and makes an audio stream sensitive to system latencies when
437  * 24/32 bits are playing.
438  * Adjusting threshold of DMA fifo to force the DMA request
439  * sooner to improve latency tolerance at the expense of power.
440  */
441 static void bxt_reduce_dma_latency(struct azx *chip)
442 {
443 	u32 val;
444 
445 	val = azx_readl(chip, VS_EM4L);
446 	val &= (0x3 << 20);
447 	azx_writel(chip, VS_EM4L, val);
448 }
449 
450 /*
451  * ML_LCAP bits:
452  *  bit 0: 6 MHz Supported
453  *  bit 1: 12 MHz Supported
454  *  bit 2: 24 MHz Supported
455  *  bit 3: 48 MHz Supported
456  *  bit 4: 96 MHz Supported
457  *  bit 5: 192 MHz Supported
458  */
459 static int intel_get_lctl_scf(struct azx *chip)
460 {
461 	struct hdac_bus *bus = azx_bus(chip);
462 	static const int preferred_bits[] = { 2, 3, 1, 4, 5 };
463 	u32 val, t;
464 	int i;
465 
466 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCAP);
467 
468 	for (i = 0; i < ARRAY_SIZE(preferred_bits); i++) {
469 		t = preferred_bits[i];
470 		if (val & (1 << t))
471 			return t;
472 	}
473 
474 	dev_warn(chip->card->dev, "set audio clock frequency to 6MHz");
475 	return 0;
476 }
477 
478 static int intel_ml_lctl_set_power(struct azx *chip, int state)
479 {
480 	struct hdac_bus *bus = azx_bus(chip);
481 	u32 val;
482 	int timeout;
483 
484 	/*
485 	 * Changes to LCTL.SCF are only needed for the first multi-link dealing
486 	 * with external codecs
487 	 */
488 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
489 	val &= ~AZX_ML_LCTL_SPA;
490 	val |= state << AZX_ML_LCTL_SPA_SHIFT;
491 	writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
492 	/* wait for CPA */
493 	timeout = 50;
494 	while (timeout) {
495 		if (((readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL)) &
496 		    AZX_ML_LCTL_CPA) == (state << AZX_ML_LCTL_CPA_SHIFT))
497 			return 0;
498 		timeout--;
499 		udelay(10);
500 	}
501 
502 	return -1;
503 }
504 
505 static void intel_init_lctl(struct azx *chip)
506 {
507 	struct hdac_bus *bus = azx_bus(chip);
508 	u32 val;
509 	int ret;
510 
511 	/* 0. check lctl register value is correct or not */
512 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
513 	/* only perform additional configurations if the SCF is initially based on 6MHz */
514 	if ((val & AZX_ML_LCTL_SCF) != 0)
515 		return;
516 
517 	/*
518 	 * Before operating on SPA, CPA must match SPA.
519 	 * Any deviation may result in undefined behavior.
520 	 */
521 	if (((val & AZX_ML_LCTL_SPA) >> AZX_ML_LCTL_SPA_SHIFT) !=
522 		((val & AZX_ML_LCTL_CPA) >> AZX_ML_LCTL_CPA_SHIFT))
523 		return;
524 
525 	/* 1. turn link down: set SPA to 0 and wait CPA to 0 */
526 	ret = intel_ml_lctl_set_power(chip, 0);
527 	udelay(100);
528 	if (ret)
529 		goto set_spa;
530 
531 	/* 2. update SCF to select an audio clock different from 6MHz */
532 	val &= ~AZX_ML_LCTL_SCF;
533 	val |= intel_get_lctl_scf(chip);
534 	writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
535 
536 set_spa:
537 	/* 4. turn link up: set SPA to 1 and wait CPA to 1 */
538 	intel_ml_lctl_set_power(chip, 1);
539 	udelay(100);
540 }
541 
542 static void hda_intel_init_chip(struct azx *chip, bool full_reset)
543 {
544 	struct hdac_bus *bus = azx_bus(chip);
545 	struct pci_dev *pci = chip->pci;
546 	u32 val;
547 
548 	snd_hdac_set_codec_wakeup(bus, true);
549 	if (chip->driver_type == AZX_DRIVER_SKL) {
550 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
551 		val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
552 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
553 	}
554 	azx_init_chip(chip, full_reset);
555 	if (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 
561 	snd_hdac_set_codec_wakeup(bus, false);
562 
563 	/* reduce dma latency to avoid noise */
564 	if (HDA_CONTROLLER_IS_APL(pci))
565 		bxt_reduce_dma_latency(chip);
566 
567 	if (bus->mlcap != NULL)
568 		intel_init_lctl(chip);
569 }
570 
571 /* calculate runtime delay from LPIB */
572 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
573 				   unsigned int pos)
574 {
575 	struct snd_pcm_substream *substream = azx_dev->core.substream;
576 	int stream = substream->stream;
577 	unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
578 	int delay;
579 
580 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
581 		delay = pos - lpib_pos;
582 	else
583 		delay = lpib_pos - pos;
584 	if (delay < 0) {
585 		if (delay >= azx_dev->core.delay_negative_threshold)
586 			delay = 0;
587 		else
588 			delay += azx_dev->core.bufsize;
589 	}
590 
591 	if (delay >= azx_dev->core.period_bytes) {
592 		dev_info(chip->card->dev,
593 			 "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
594 			 delay, azx_dev->core.period_bytes);
595 		delay = 0;
596 		chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
597 		chip->get_delay[stream] = NULL;
598 	}
599 
600 	return bytes_to_frames(substream->runtime, delay);
601 }
602 
603 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
604 
605 /* called from IRQ */
606 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
607 {
608 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
609 	int ok;
610 
611 	ok = azx_position_ok(chip, azx_dev);
612 	if (ok == 1) {
613 		azx_dev->irq_pending = 0;
614 		return ok;
615 	} else if (ok == 0) {
616 		/* bogus IRQ, process it later */
617 		azx_dev->irq_pending = 1;
618 		schedule_work(&hda->irq_pending_work);
619 	}
620 	return 0;
621 }
622 
623 #define display_power(chip, enable) \
624 	snd_hdac_display_power(azx_bus(chip), HDA_CODEC_IDX_CONTROLLER, enable)
625 
626 /*
627  * Check whether the current DMA position is acceptable for updating
628  * periods.  Returns non-zero if it's OK.
629  *
630  * Many HD-audio controllers appear pretty inaccurate about
631  * the update-IRQ timing.  The IRQ is issued before actually the
632  * data is processed.  So, we need to process it afterwords in a
633  * workqueue.
634  *
635  * Returns 1 if OK to proceed, 0 for delay handling, -1 for skipping update
636  */
637 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
638 {
639 	struct snd_pcm_substream *substream = azx_dev->core.substream;
640 	struct snd_pcm_runtime *runtime = substream->runtime;
641 	int stream = substream->stream;
642 	u32 wallclk;
643 	unsigned int pos;
644 	snd_pcm_uframes_t hwptr, target;
645 
646 	/*
647 	 * The value of the WALLCLK register is always 0
648 	 * on the Loongson controller, so we return directly.
649 	 */
650 	if (chip->driver_type == AZX_DRIVER_LOONGSON)
651 		return 1;
652 
653 	wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
654 	if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
655 		return -1;	/* bogus (too early) interrupt */
656 
657 	if (chip->get_position[stream])
658 		pos = chip->get_position[stream](chip, azx_dev);
659 	else { /* use the position buffer as default */
660 		pos = azx_get_pos_posbuf(chip, azx_dev);
661 		if (!pos || pos == (u32)-1) {
662 			dev_info(chip->card->dev,
663 				 "Invalid position buffer, using LPIB read method instead.\n");
664 			chip->get_position[stream] = azx_get_pos_lpib;
665 			if (chip->get_position[0] == azx_get_pos_lpib &&
666 			    chip->get_position[1] == azx_get_pos_lpib)
667 				azx_bus(chip)->use_posbuf = false;
668 			pos = azx_get_pos_lpib(chip, azx_dev);
669 			chip->get_delay[stream] = NULL;
670 		} else {
671 			chip->get_position[stream] = azx_get_pos_posbuf;
672 			if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
673 				chip->get_delay[stream] = azx_get_delay_from_lpib;
674 		}
675 	}
676 
677 	if (pos >= azx_dev->core.bufsize)
678 		pos = 0;
679 
680 	if (WARN_ONCE(!azx_dev->core.period_bytes,
681 		      "hda-intel: zero azx_dev->period_bytes"))
682 		return -1; /* this shouldn't happen! */
683 	if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
684 	    pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
685 		/* NG - it's below the first next period boundary */
686 		return chip->bdl_pos_adj ? 0 : -1;
687 	azx_dev->core.start_wallclk += wallclk;
688 
689 	if (azx_dev->core.no_period_wakeup)
690 		return 1; /* OK, no need to check period boundary */
691 
692 	if (runtime->hw_ptr_base != runtime->hw_ptr_interrupt)
693 		return 1; /* OK, already in hwptr updating process */
694 
695 	/* check whether the period gets really elapsed */
696 	pos = bytes_to_frames(runtime, pos);
697 	hwptr = runtime->hw_ptr_base + pos;
698 	if (hwptr < runtime->status->hw_ptr)
699 		hwptr += runtime->buffer_size;
700 	target = runtime->hw_ptr_interrupt + runtime->period_size;
701 	if (hwptr < target) {
702 		/* too early wakeup, process it later */
703 		return chip->bdl_pos_adj ? 0 : -1;
704 	}
705 
706 	return 1; /* OK, it's fine */
707 }
708 
709 /*
710  * The work for pending PCM period updates.
711  */
712 static void azx_irq_pending_work(struct work_struct *work)
713 {
714 	struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
715 	struct azx *chip = &hda->chip;
716 	struct hdac_bus *bus = azx_bus(chip);
717 	struct hdac_stream *s;
718 	int pending, ok;
719 
720 	if (!hda->irq_pending_warned) {
721 		dev_info(chip->card->dev,
722 			 "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
723 			 chip->card->number);
724 		hda->irq_pending_warned = 1;
725 	}
726 
727 	for (;;) {
728 		pending = 0;
729 		spin_lock_irq(&bus->reg_lock);
730 		list_for_each_entry(s, &bus->stream_list, list) {
731 			struct azx_dev *azx_dev = stream_to_azx_dev(s);
732 			if (!azx_dev->irq_pending ||
733 			    !s->substream ||
734 			    !s->running)
735 				continue;
736 			ok = azx_position_ok(chip, azx_dev);
737 			if (ok > 0) {
738 				azx_dev->irq_pending = 0;
739 				spin_unlock(&bus->reg_lock);
740 				snd_pcm_period_elapsed(s->substream);
741 				spin_lock(&bus->reg_lock);
742 			} else if (ok < 0) {
743 				pending = 0;	/* too early */
744 			} else
745 				pending++;
746 		}
747 		spin_unlock_irq(&bus->reg_lock);
748 		if (!pending)
749 			return;
750 		msleep(1);
751 	}
752 }
753 
754 /* clear irq_pending flags and assure no on-going workq */
755 static void azx_clear_irq_pending(struct azx *chip)
756 {
757 	struct hdac_bus *bus = azx_bus(chip);
758 	struct hdac_stream *s;
759 
760 	spin_lock_irq(&bus->reg_lock);
761 	list_for_each_entry(s, &bus->stream_list, list) {
762 		struct azx_dev *azx_dev = stream_to_azx_dev(s);
763 		azx_dev->irq_pending = 0;
764 	}
765 	spin_unlock_irq(&bus->reg_lock);
766 }
767 
768 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
769 {
770 	struct hdac_bus *bus = azx_bus(chip);
771 
772 	if (request_irq(chip->pci->irq, azx_interrupt,
773 			chip->msi ? 0 : IRQF_SHARED,
774 			chip->card->irq_descr, chip)) {
775 		dev_err(chip->card->dev,
776 			"unable to grab IRQ %d, disabling device\n",
777 			chip->pci->irq);
778 		if (do_disconnect)
779 			snd_card_disconnect(chip->card);
780 		return -1;
781 	}
782 	bus->irq = chip->pci->irq;
783 	chip->card->sync_irq = bus->irq;
784 	pci_intx(chip->pci, !chip->msi);
785 	return 0;
786 }
787 
788 /* get the current DMA position with correction on VIA chips */
789 static unsigned int azx_via_get_position(struct azx *chip,
790 					 struct azx_dev *azx_dev)
791 {
792 	unsigned int link_pos, mini_pos, bound_pos;
793 	unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
794 	unsigned int fifo_size;
795 
796 	link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
797 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
798 		/* Playback, no problem using link position */
799 		return link_pos;
800 	}
801 
802 	/* Capture */
803 	/* For new chipset,
804 	 * use mod to get the DMA position just like old chipset
805 	 */
806 	mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
807 	mod_dma_pos %= azx_dev->core.period_bytes;
808 
809 	fifo_size = azx_stream(azx_dev)->fifo_size - 1;
810 
811 	if (azx_dev->insufficient) {
812 		/* Link position never gather than FIFO size */
813 		if (link_pos <= fifo_size)
814 			return 0;
815 
816 		azx_dev->insufficient = 0;
817 	}
818 
819 	if (link_pos <= fifo_size)
820 		mini_pos = azx_dev->core.bufsize + link_pos - fifo_size;
821 	else
822 		mini_pos = link_pos - fifo_size;
823 
824 	/* Find nearest previous boudary */
825 	mod_mini_pos = mini_pos % azx_dev->core.period_bytes;
826 	mod_link_pos = link_pos % azx_dev->core.period_bytes;
827 	if (mod_link_pos >= fifo_size)
828 		bound_pos = link_pos - mod_link_pos;
829 	else if (mod_dma_pos >= mod_mini_pos)
830 		bound_pos = mini_pos - mod_mini_pos;
831 	else {
832 		bound_pos = mini_pos - mod_mini_pos + azx_dev->core.period_bytes;
833 		if (bound_pos >= azx_dev->core.bufsize)
834 			bound_pos = 0;
835 	}
836 
837 	/* Calculate real DMA position we want */
838 	return bound_pos + mod_dma_pos;
839 }
840 
841 #define AMD_FIFO_SIZE	32
842 
843 /* get the current DMA position with FIFO size correction */
844 static unsigned int azx_get_pos_fifo(struct azx *chip, struct azx_dev *azx_dev)
845 {
846 	struct snd_pcm_substream *substream = azx_dev->core.substream;
847 	struct snd_pcm_runtime *runtime = substream->runtime;
848 	unsigned int pos, delay;
849 
850 	pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
851 	if (!runtime)
852 		return pos;
853 
854 	runtime->delay = AMD_FIFO_SIZE;
855 	delay = frames_to_bytes(runtime, AMD_FIFO_SIZE);
856 	if (azx_dev->insufficient) {
857 		if (pos < delay) {
858 			delay = pos;
859 			runtime->delay = bytes_to_frames(runtime, pos);
860 		} else {
861 			azx_dev->insufficient = 0;
862 		}
863 	}
864 
865 	/* correct the DMA position for capture stream */
866 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
867 		if (pos < delay)
868 			pos += azx_dev->core.bufsize;
869 		pos -= delay;
870 	}
871 
872 	return pos;
873 }
874 
875 static int azx_get_delay_from_fifo(struct azx *chip, struct azx_dev *azx_dev,
876 				   unsigned int pos)
877 {
878 	struct snd_pcm_substream *substream = azx_dev->core.substream;
879 
880 	/* just read back the calculated value in the above */
881 	return substream->runtime->delay;
882 }
883 
884 static void __azx_shutdown_chip(struct azx *chip, bool skip_link_reset)
885 {
886 	azx_stop_chip(chip);
887 	if (!skip_link_reset)
888 		azx_enter_link_reset(chip);
889 	azx_clear_irq_pending(chip);
890 	display_power(chip, false);
891 }
892 
893 #ifdef CONFIG_PM
894 static DEFINE_MUTEX(card_list_lock);
895 static LIST_HEAD(card_list);
896 
897 static void azx_shutdown_chip(struct azx *chip)
898 {
899 	__azx_shutdown_chip(chip, false);
900 }
901 
902 static void azx_add_card_list(struct azx *chip)
903 {
904 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
905 	mutex_lock(&card_list_lock);
906 	list_add(&hda->list, &card_list);
907 	mutex_unlock(&card_list_lock);
908 }
909 
910 static void azx_del_card_list(struct azx *chip)
911 {
912 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
913 	mutex_lock(&card_list_lock);
914 	list_del_init(&hda->list);
915 	mutex_unlock(&card_list_lock);
916 }
917 
918 /* trigger power-save check at writing parameter */
919 static int param_set_xint(const char *val, const struct kernel_param *kp)
920 {
921 	struct hda_intel *hda;
922 	struct azx *chip;
923 	int prev = power_save;
924 	int ret = param_set_int(val, kp);
925 
926 	if (ret || prev == power_save)
927 		return ret;
928 
929 	mutex_lock(&card_list_lock);
930 	list_for_each_entry(hda, &card_list, list) {
931 		chip = &hda->chip;
932 		if (!hda->probe_continued || chip->disabled)
933 			continue;
934 		snd_hda_set_power_save(&chip->bus, power_save * 1000);
935 	}
936 	mutex_unlock(&card_list_lock);
937 	return 0;
938 }
939 
940 /*
941  * power management
942  */
943 static bool azx_is_pm_ready(struct snd_card *card)
944 {
945 	struct azx *chip;
946 	struct hda_intel *hda;
947 
948 	if (!card)
949 		return false;
950 	chip = card->private_data;
951 	hda = container_of(chip, struct hda_intel, chip);
952 	if (chip->disabled || hda->init_failed || !chip->running)
953 		return false;
954 	return true;
955 }
956 
957 static void __azx_runtime_resume(struct azx *chip)
958 {
959 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
960 	struct hdac_bus *bus = azx_bus(chip);
961 	struct hda_codec *codec;
962 	int status;
963 
964 	display_power(chip, true);
965 	if (hda->need_i915_power)
966 		snd_hdac_i915_set_bclk(bus);
967 
968 	/* Read STATESTS before controller reset */
969 	status = azx_readw(chip, STATESTS);
970 
971 	azx_init_pci(chip);
972 	hda_intel_init_chip(chip, true);
973 
974 	/* Avoid codec resume if runtime resume is for system suspend */
975 	if (!chip->pm_prepared) {
976 		list_for_each_codec(codec, &chip->bus) {
977 			if (codec->relaxed_resume)
978 				continue;
979 
980 			if (codec->forced_resume || (status & (1 << codec->addr)))
981 				pm_request_resume(hda_codec_dev(codec));
982 		}
983 	}
984 
985 	/* power down again for link-controlled chips */
986 	if (!hda->need_i915_power)
987 		display_power(chip, false);
988 }
989 
990 #ifdef CONFIG_PM_SLEEP
991 static int azx_prepare(struct device *dev)
992 {
993 	struct snd_card *card = dev_get_drvdata(dev);
994 	struct azx *chip;
995 
996 	if (!azx_is_pm_ready(card))
997 		return 0;
998 
999 	chip = card->private_data;
1000 	chip->pm_prepared = 1;
1001 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1002 
1003 	flush_work(&azx_bus(chip)->unsol_work);
1004 
1005 	/* HDA controller always requires different WAKEEN for runtime suspend
1006 	 * and system suspend, so don't use direct-complete here.
1007 	 */
1008 	return 0;
1009 }
1010 
1011 static void azx_complete(struct device *dev)
1012 {
1013 	struct snd_card *card = dev_get_drvdata(dev);
1014 	struct azx *chip;
1015 
1016 	if (!azx_is_pm_ready(card))
1017 		return;
1018 
1019 	chip = card->private_data;
1020 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1021 	chip->pm_prepared = 0;
1022 }
1023 
1024 static int azx_suspend(struct device *dev)
1025 {
1026 	struct snd_card *card = dev_get_drvdata(dev);
1027 	struct azx *chip;
1028 	struct hdac_bus *bus;
1029 
1030 	if (!azx_is_pm_ready(card))
1031 		return 0;
1032 
1033 	chip = card->private_data;
1034 	bus = azx_bus(chip);
1035 	azx_shutdown_chip(chip);
1036 	if (bus->irq >= 0) {
1037 		free_irq(bus->irq, chip);
1038 		bus->irq = -1;
1039 		chip->card->sync_irq = -1;
1040 	}
1041 
1042 	if (chip->msi)
1043 		pci_disable_msi(chip->pci);
1044 
1045 	trace_azx_suspend(chip);
1046 	return 0;
1047 }
1048 
1049 static int azx_resume(struct device *dev)
1050 {
1051 	struct snd_card *card = dev_get_drvdata(dev);
1052 	struct azx *chip;
1053 
1054 	if (!azx_is_pm_ready(card))
1055 		return 0;
1056 
1057 	chip = card->private_data;
1058 	if (chip->msi)
1059 		if (pci_enable_msi(chip->pci) < 0)
1060 			chip->msi = 0;
1061 	if (azx_acquire_irq(chip, 1) < 0)
1062 		return -EIO;
1063 
1064 	__azx_runtime_resume(chip);
1065 
1066 	trace_azx_resume(chip);
1067 	return 0;
1068 }
1069 
1070 /* put codec down to D3 at hibernation for Intel SKL+;
1071  * otherwise BIOS may still access the codec and screw up the driver
1072  */
1073 static int azx_freeze_noirq(struct device *dev)
1074 {
1075 	struct snd_card *card = dev_get_drvdata(dev);
1076 	struct azx *chip = card->private_data;
1077 	struct pci_dev *pci = to_pci_dev(dev);
1078 
1079 	if (!azx_is_pm_ready(card))
1080 		return 0;
1081 	if (chip->driver_type == AZX_DRIVER_SKL)
1082 		pci_set_power_state(pci, PCI_D3hot);
1083 
1084 	return 0;
1085 }
1086 
1087 static int azx_thaw_noirq(struct device *dev)
1088 {
1089 	struct snd_card *card = dev_get_drvdata(dev);
1090 	struct azx *chip = card->private_data;
1091 	struct pci_dev *pci = to_pci_dev(dev);
1092 
1093 	if (!azx_is_pm_ready(card))
1094 		return 0;
1095 	if (chip->driver_type == AZX_DRIVER_SKL)
1096 		pci_set_power_state(pci, PCI_D0);
1097 
1098 	return 0;
1099 }
1100 #endif /* CONFIG_PM_SLEEP */
1101 
1102 static int azx_runtime_suspend(struct device *dev)
1103 {
1104 	struct snd_card *card = dev_get_drvdata(dev);
1105 	struct azx *chip;
1106 
1107 	if (!azx_is_pm_ready(card))
1108 		return 0;
1109 	chip = card->private_data;
1110 
1111 	/* enable controller wake up event */
1112 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) | STATESTS_INT_MASK);
1113 
1114 	azx_shutdown_chip(chip);
1115 	trace_azx_runtime_suspend(chip);
1116 	return 0;
1117 }
1118 
1119 static int azx_runtime_resume(struct device *dev)
1120 {
1121 	struct snd_card *card = dev_get_drvdata(dev);
1122 	struct azx *chip;
1123 
1124 	if (!azx_is_pm_ready(card))
1125 		return 0;
1126 	chip = card->private_data;
1127 	__azx_runtime_resume(chip);
1128 
1129 	/* disable controller Wake Up event*/
1130 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) & ~STATESTS_INT_MASK);
1131 
1132 	trace_azx_runtime_resume(chip);
1133 	return 0;
1134 }
1135 
1136 static int azx_runtime_idle(struct device *dev)
1137 {
1138 	struct snd_card *card = dev_get_drvdata(dev);
1139 	struct azx *chip;
1140 	struct hda_intel *hda;
1141 
1142 	if (!card)
1143 		return 0;
1144 
1145 	chip = card->private_data;
1146 	hda = container_of(chip, struct hda_intel, chip);
1147 	if (chip->disabled || hda->init_failed)
1148 		return 0;
1149 
1150 	if (!power_save_controller || !azx_has_pm_runtime(chip) ||
1151 	    azx_bus(chip)->codec_powered || !chip->running)
1152 		return -EBUSY;
1153 
1154 	/* ELD notification gets broken when HD-audio bus is off */
1155 	if (needs_eld_notify_link(chip))
1156 		return -EBUSY;
1157 
1158 	return 0;
1159 }
1160 
1161 static const struct dev_pm_ops azx_pm = {
1162 	SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
1163 #ifdef CONFIG_PM_SLEEP
1164 	.prepare = azx_prepare,
1165 	.complete = azx_complete,
1166 	.freeze_noirq = azx_freeze_noirq,
1167 	.thaw_noirq = azx_thaw_noirq,
1168 #endif
1169 	SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
1170 };
1171 
1172 #define AZX_PM_OPS	&azx_pm
1173 #else
1174 #define azx_add_card_list(chip) /* NOP */
1175 #define azx_del_card_list(chip) /* NOP */
1176 #define AZX_PM_OPS	NULL
1177 #endif /* CONFIG_PM */
1178 
1179 
1180 static int azx_probe_continue(struct azx *chip);
1181 
1182 #ifdef SUPPORT_VGA_SWITCHEROO
1183 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
1184 
1185 static void azx_vs_set_state(struct pci_dev *pci,
1186 			     enum vga_switcheroo_state state)
1187 {
1188 	struct snd_card *card = pci_get_drvdata(pci);
1189 	struct azx *chip = card->private_data;
1190 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1191 	struct hda_codec *codec;
1192 	bool disabled;
1193 
1194 	wait_for_completion(&hda->probe_wait);
1195 	if (hda->init_failed)
1196 		return;
1197 
1198 	disabled = (state == VGA_SWITCHEROO_OFF);
1199 	if (chip->disabled == disabled)
1200 		return;
1201 
1202 	if (!hda->probe_continued) {
1203 		chip->disabled = disabled;
1204 		if (!disabled) {
1205 			dev_info(chip->card->dev,
1206 				 "Start delayed initialization\n");
1207 			if (azx_probe_continue(chip) < 0)
1208 				dev_err(chip->card->dev, "initialization error\n");
1209 		}
1210 	} else {
1211 		dev_info(chip->card->dev, "%s via vga_switcheroo\n",
1212 			 disabled ? "Disabling" : "Enabling");
1213 		if (disabled) {
1214 			list_for_each_codec(codec, &chip->bus) {
1215 				pm_runtime_suspend(hda_codec_dev(codec));
1216 				pm_runtime_disable(hda_codec_dev(codec));
1217 			}
1218 			pm_runtime_suspend(card->dev);
1219 			pm_runtime_disable(card->dev);
1220 			/* when we get suspended by vga_switcheroo we end up in D3cold,
1221 			 * however we have no ACPI handle, so pci/acpi can't put us there,
1222 			 * put ourselves there */
1223 			pci->current_state = PCI_D3cold;
1224 			chip->disabled = true;
1225 			if (snd_hda_lock_devices(&chip->bus))
1226 				dev_warn(chip->card->dev,
1227 					 "Cannot lock devices!\n");
1228 		} else {
1229 			snd_hda_unlock_devices(&chip->bus);
1230 			chip->disabled = false;
1231 			pm_runtime_enable(card->dev);
1232 			list_for_each_codec(codec, &chip->bus) {
1233 				pm_runtime_enable(hda_codec_dev(codec));
1234 				pm_runtime_resume(hda_codec_dev(codec));
1235 			}
1236 		}
1237 	}
1238 }
1239 
1240 static bool azx_vs_can_switch(struct pci_dev *pci)
1241 {
1242 	struct snd_card *card = pci_get_drvdata(pci);
1243 	struct azx *chip = card->private_data;
1244 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1245 
1246 	wait_for_completion(&hda->probe_wait);
1247 	if (hda->init_failed)
1248 		return false;
1249 	if (chip->disabled || !hda->probe_continued)
1250 		return true;
1251 	if (snd_hda_lock_devices(&chip->bus))
1252 		return false;
1253 	snd_hda_unlock_devices(&chip->bus);
1254 	return true;
1255 }
1256 
1257 /*
1258  * The discrete GPU cannot power down unless the HDA controller runtime
1259  * suspends, so activate runtime PM on codecs even if power_save == 0.
1260  */
1261 static void setup_vga_switcheroo_runtime_pm(struct azx *chip)
1262 {
1263 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1264 	struct hda_codec *codec;
1265 
1266 	if (hda->use_vga_switcheroo && !needs_eld_notify_link(chip)) {
1267 		list_for_each_codec(codec, &chip->bus)
1268 			codec->auto_runtime_pm = 1;
1269 		/* reset the power save setup */
1270 		if (chip->running)
1271 			set_default_power_save(chip);
1272 	}
1273 }
1274 
1275 static void azx_vs_gpu_bound(struct pci_dev *pci,
1276 			     enum vga_switcheroo_client_id client_id)
1277 {
1278 	struct snd_card *card = pci_get_drvdata(pci);
1279 	struct azx *chip = card->private_data;
1280 
1281 	if (client_id == VGA_SWITCHEROO_DIS)
1282 		chip->bus.keep_power = 0;
1283 	setup_vga_switcheroo_runtime_pm(chip);
1284 }
1285 
1286 static void init_vga_switcheroo(struct azx *chip)
1287 {
1288 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1289 	struct pci_dev *p = get_bound_vga(chip->pci);
1290 	struct pci_dev *parent;
1291 	if (p) {
1292 		dev_info(chip->card->dev,
1293 			 "Handle vga_switcheroo audio client\n");
1294 		hda->use_vga_switcheroo = 1;
1295 
1296 		/* cleared in either gpu_bound op or codec probe, or when its
1297 		 * upstream port has _PR3 (i.e. dGPU).
1298 		 */
1299 		parent = pci_upstream_bridge(p);
1300 		chip->bus.keep_power = parent ? !pci_pr3_present(parent) : 1;
1301 		chip->driver_caps |= AZX_DCAPS_PM_RUNTIME;
1302 		pci_dev_put(p);
1303 	}
1304 }
1305 
1306 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1307 	.set_gpu_state = azx_vs_set_state,
1308 	.can_switch = azx_vs_can_switch,
1309 	.gpu_bound = azx_vs_gpu_bound,
1310 };
1311 
1312 static int register_vga_switcheroo(struct azx *chip)
1313 {
1314 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1315 	struct pci_dev *p;
1316 	int err;
1317 
1318 	if (!hda->use_vga_switcheroo)
1319 		return 0;
1320 
1321 	p = get_bound_vga(chip->pci);
1322 	err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops, p);
1323 	pci_dev_put(p);
1324 
1325 	if (err < 0)
1326 		return err;
1327 	hda->vga_switcheroo_registered = 1;
1328 
1329 	return 0;
1330 }
1331 #else
1332 #define init_vga_switcheroo(chip)		/* NOP */
1333 #define register_vga_switcheroo(chip)		0
1334 #define check_hdmi_disabled(pci)	false
1335 #define setup_vga_switcheroo_runtime_pm(chip)	/* NOP */
1336 #endif /* SUPPORT_VGA_SWITCHER */
1337 
1338 /*
1339  * destructor
1340  */
1341 static void azx_free(struct azx *chip)
1342 {
1343 	struct pci_dev *pci = chip->pci;
1344 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1345 	struct hdac_bus *bus = azx_bus(chip);
1346 
1347 	if (hda->freed)
1348 		return;
1349 
1350 	if (azx_has_pm_runtime(chip) && chip->running) {
1351 		pm_runtime_get_noresume(&pci->dev);
1352 		pm_runtime_forbid(&pci->dev);
1353 		pm_runtime_dont_use_autosuspend(&pci->dev);
1354 	}
1355 
1356 	chip->running = 0;
1357 
1358 	azx_del_card_list(chip);
1359 
1360 	hda->init_failed = 1; /* to be sure */
1361 	complete_all(&hda->probe_wait);
1362 
1363 	if (use_vga_switcheroo(hda)) {
1364 		if (chip->disabled && hda->probe_continued)
1365 			snd_hda_unlock_devices(&chip->bus);
1366 		if (hda->vga_switcheroo_registered)
1367 			vga_switcheroo_unregister_client(chip->pci);
1368 	}
1369 
1370 	if (bus->chip_init) {
1371 		azx_clear_irq_pending(chip);
1372 		azx_stop_all_streams(chip);
1373 		azx_stop_chip(chip);
1374 	}
1375 
1376 	if (bus->irq >= 0)
1377 		free_irq(bus->irq, (void*)chip);
1378 
1379 	azx_free_stream_pages(chip);
1380 	azx_free_streams(chip);
1381 	snd_hdac_bus_exit(bus);
1382 
1383 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1384 	release_firmware(chip->fw);
1385 #endif
1386 	display_power(chip, false);
1387 
1388 	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT)
1389 		snd_hdac_i915_exit(bus);
1390 
1391 	hda->freed = 1;
1392 }
1393 
1394 static int azx_dev_disconnect(struct snd_device *device)
1395 {
1396 	struct azx *chip = device->device_data;
1397 	struct hdac_bus *bus = azx_bus(chip);
1398 
1399 	chip->bus.shutdown = 1;
1400 	cancel_work_sync(&bus->unsol_work);
1401 
1402 	return 0;
1403 }
1404 
1405 static int azx_dev_free(struct snd_device *device)
1406 {
1407 	azx_free(device->device_data);
1408 	return 0;
1409 }
1410 
1411 #ifdef SUPPORT_VGA_SWITCHEROO
1412 #ifdef CONFIG_ACPI
1413 /* ATPX is in the integrated GPU's namespace */
1414 static bool atpx_present(void)
1415 {
1416 	struct pci_dev *pdev = NULL;
1417 	acpi_handle dhandle, atpx_handle;
1418 	acpi_status status;
1419 
1420 	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
1421 		dhandle = ACPI_HANDLE(&pdev->dev);
1422 		if (dhandle) {
1423 			status = acpi_get_handle(dhandle, "ATPX", &atpx_handle);
1424 			if (ACPI_SUCCESS(status)) {
1425 				pci_dev_put(pdev);
1426 				return true;
1427 			}
1428 		}
1429 	}
1430 	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
1431 		dhandle = ACPI_HANDLE(&pdev->dev);
1432 		if (dhandle) {
1433 			status = acpi_get_handle(dhandle, "ATPX", &atpx_handle);
1434 			if (ACPI_SUCCESS(status)) {
1435 				pci_dev_put(pdev);
1436 				return true;
1437 			}
1438 		}
1439 	}
1440 	return false;
1441 }
1442 #else
1443 static bool atpx_present(void)
1444 {
1445 	return false;
1446 }
1447 #endif
1448 
1449 /*
1450  * Check of disabled HDMI controller by vga_switcheroo
1451  */
1452 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1453 {
1454 	struct pci_dev *p;
1455 
1456 	/* check only discrete GPU */
1457 	switch (pci->vendor) {
1458 	case PCI_VENDOR_ID_ATI:
1459 	case PCI_VENDOR_ID_AMD:
1460 		if (pci->devfn == 1) {
1461 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1462 							pci->bus->number, 0);
1463 			if (p) {
1464 				/* ATPX is in the integrated GPU's ACPI namespace
1465 				 * rather than the dGPU's namespace. However,
1466 				 * the dGPU is the one who is involved in
1467 				 * vgaswitcheroo.
1468 				 */
1469 				if (((p->class >> 16) == PCI_BASE_CLASS_DISPLAY) &&
1470 				    (atpx_present() || apple_gmux_detect(NULL, NULL)))
1471 					return p;
1472 				pci_dev_put(p);
1473 			}
1474 		}
1475 		break;
1476 	case PCI_VENDOR_ID_NVIDIA:
1477 		if (pci->devfn == 1) {
1478 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1479 							pci->bus->number, 0);
1480 			if (p) {
1481 				if ((p->class >> 16) == PCI_BASE_CLASS_DISPLAY)
1482 					return p;
1483 				pci_dev_put(p);
1484 			}
1485 		}
1486 		break;
1487 	}
1488 	return NULL;
1489 }
1490 
1491 static bool check_hdmi_disabled(struct pci_dev *pci)
1492 {
1493 	bool vga_inactive = false;
1494 	struct pci_dev *p = get_bound_vga(pci);
1495 
1496 	if (p) {
1497 		if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1498 			vga_inactive = true;
1499 		pci_dev_put(p);
1500 	}
1501 	return vga_inactive;
1502 }
1503 #endif /* SUPPORT_VGA_SWITCHEROO */
1504 
1505 /*
1506  * allow/deny-listing for position_fix
1507  */
1508 static const struct snd_pci_quirk position_fix_list[] = {
1509 	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1510 	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1511 	SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1512 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1513 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1514 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1515 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1516 	SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1517 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1518 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1519 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1520 	SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1521 	SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1522 	SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1523 	{}
1524 };
1525 
1526 static int check_position_fix(struct azx *chip, int fix)
1527 {
1528 	const struct snd_pci_quirk *q;
1529 
1530 	switch (fix) {
1531 	case POS_FIX_AUTO:
1532 	case POS_FIX_LPIB:
1533 	case POS_FIX_POSBUF:
1534 	case POS_FIX_VIACOMBO:
1535 	case POS_FIX_COMBO:
1536 	case POS_FIX_SKL:
1537 	case POS_FIX_FIFO:
1538 		return fix;
1539 	}
1540 
1541 	q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1542 	if (q) {
1543 		dev_info(chip->card->dev,
1544 			 "position_fix set to %d for device %04x:%04x\n",
1545 			 q->value, q->subvendor, q->subdevice);
1546 		return q->value;
1547 	}
1548 
1549 	/* Check VIA/ATI HD Audio Controller exist */
1550 	if (chip->driver_type == AZX_DRIVER_VIA) {
1551 		dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1552 		return POS_FIX_VIACOMBO;
1553 	}
1554 	if (chip->driver_caps & AZX_DCAPS_AMD_WORKAROUND) {
1555 		dev_dbg(chip->card->dev, "Using FIFO position fix\n");
1556 		return POS_FIX_FIFO;
1557 	}
1558 	if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1559 		dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1560 		return POS_FIX_LPIB;
1561 	}
1562 	if (chip->driver_type == AZX_DRIVER_SKL) {
1563 		dev_dbg(chip->card->dev, "Using SKL position fix\n");
1564 		return POS_FIX_SKL;
1565 	}
1566 	return POS_FIX_AUTO;
1567 }
1568 
1569 static void assign_position_fix(struct azx *chip, int fix)
1570 {
1571 	static const azx_get_pos_callback_t callbacks[] = {
1572 		[POS_FIX_AUTO] = NULL,
1573 		[POS_FIX_LPIB] = azx_get_pos_lpib,
1574 		[POS_FIX_POSBUF] = azx_get_pos_posbuf,
1575 		[POS_FIX_VIACOMBO] = azx_via_get_position,
1576 		[POS_FIX_COMBO] = azx_get_pos_lpib,
1577 		[POS_FIX_SKL] = azx_get_pos_posbuf,
1578 		[POS_FIX_FIFO] = azx_get_pos_fifo,
1579 	};
1580 
1581 	chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1582 
1583 	/* combo mode uses LPIB only for playback */
1584 	if (fix == POS_FIX_COMBO)
1585 		chip->get_position[1] = NULL;
1586 
1587 	if ((fix == POS_FIX_POSBUF || fix == POS_FIX_SKL) &&
1588 	    (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1589 		chip->get_delay[0] = chip->get_delay[1] =
1590 			azx_get_delay_from_lpib;
1591 	}
1592 
1593 	if (fix == POS_FIX_FIFO)
1594 		chip->get_delay[0] = chip->get_delay[1] =
1595 			azx_get_delay_from_fifo;
1596 }
1597 
1598 /*
1599  * deny-lists for probe_mask
1600  */
1601 static const struct snd_pci_quirk probe_mask_list[] = {
1602 	/* Thinkpad often breaks the controller communication when accessing
1603 	 * to the non-working (or non-existing) modem codec slot.
1604 	 */
1605 	SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1606 	SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1607 	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1608 	/* broken BIOS */
1609 	SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1610 	/* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1611 	SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1612 	/* forced codec slots */
1613 	SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1614 	SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1615 	SND_PCI_QUIRK(0x1558, 0x0351, "Schenker Dock 15", 0x105),
1616 	/* WinFast VP200 H (Teradici) user reported broken communication */
1617 	SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1618 	{}
1619 };
1620 
1621 #define AZX_FORCE_CODEC_MASK	0x100
1622 
1623 static void check_probe_mask(struct azx *chip, int dev)
1624 {
1625 	const struct snd_pci_quirk *q;
1626 
1627 	chip->codec_probe_mask = probe_mask[dev];
1628 	if (chip->codec_probe_mask == -1) {
1629 		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1630 		if (q) {
1631 			dev_info(chip->card->dev,
1632 				 "probe_mask set to 0x%x for device %04x:%04x\n",
1633 				 q->value, q->subvendor, q->subdevice);
1634 			chip->codec_probe_mask = q->value;
1635 		}
1636 	}
1637 
1638 	/* check forced option */
1639 	if (chip->codec_probe_mask != -1 &&
1640 	    (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1641 		azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
1642 		dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1643 			 (int)azx_bus(chip)->codec_mask);
1644 	}
1645 }
1646 
1647 /*
1648  * allow/deny-list for enable_msi
1649  */
1650 static const struct snd_pci_quirk msi_deny_list[] = {
1651 	SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1652 	SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1653 	SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1654 	SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1655 	SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1656 	SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1657 	SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1658 	SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1659 	SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1660 	SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1661 	{}
1662 };
1663 
1664 static void check_msi(struct azx *chip)
1665 {
1666 	const struct snd_pci_quirk *q;
1667 
1668 	if (enable_msi >= 0) {
1669 		chip->msi = !!enable_msi;
1670 		return;
1671 	}
1672 	chip->msi = 1;	/* enable MSI as default */
1673 	q = snd_pci_quirk_lookup(chip->pci, msi_deny_list);
1674 	if (q) {
1675 		dev_info(chip->card->dev,
1676 			 "msi for device %04x:%04x set to %d\n",
1677 			 q->subvendor, q->subdevice, q->value);
1678 		chip->msi = q->value;
1679 		return;
1680 	}
1681 
1682 	/* NVidia chipsets seem to cause troubles with MSI */
1683 	if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1684 		dev_info(chip->card->dev, "Disabling MSI\n");
1685 		chip->msi = 0;
1686 	}
1687 }
1688 
1689 /* check the snoop mode availability */
1690 static void azx_check_snoop_available(struct azx *chip)
1691 {
1692 	int snoop = hda_snoop;
1693 
1694 	if (snoop >= 0) {
1695 		dev_info(chip->card->dev, "Force to %s mode by module option\n",
1696 			 snoop ? "snoop" : "non-snoop");
1697 		chip->snoop = snoop;
1698 		chip->uc_buffer = !snoop;
1699 		return;
1700 	}
1701 
1702 	snoop = true;
1703 	if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
1704 	    chip->driver_type == AZX_DRIVER_VIA) {
1705 		/* force to non-snoop mode for a new VIA controller
1706 		 * when BIOS is set
1707 		 */
1708 		u8 val;
1709 		pci_read_config_byte(chip->pci, 0x42, &val);
1710 		if (!(val & 0x80) && (chip->pci->revision == 0x30 ||
1711 				      chip->pci->revision == 0x20))
1712 			snoop = false;
1713 	}
1714 
1715 	if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
1716 		snoop = false;
1717 
1718 	chip->snoop = snoop;
1719 	if (!snoop) {
1720 		dev_info(chip->card->dev, "Force to non-snoop mode\n");
1721 		/* C-Media requires non-cached pages only for CORB/RIRB */
1722 		if (chip->driver_type != AZX_DRIVER_CMEDIA)
1723 			chip->uc_buffer = true;
1724 	}
1725 }
1726 
1727 static void azx_probe_work(struct work_struct *work)
1728 {
1729 	struct hda_intel *hda = container_of(work, struct hda_intel, probe_work.work);
1730 	azx_probe_continue(&hda->chip);
1731 }
1732 
1733 static int default_bdl_pos_adj(struct azx *chip)
1734 {
1735 	/* some exceptions: Atoms seem problematic with value 1 */
1736 	if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
1737 		switch (chip->pci->device) {
1738 		case 0x0f04: /* Baytrail */
1739 		case 0x2284: /* Braswell */
1740 			return 32;
1741 		}
1742 	}
1743 
1744 	switch (chip->driver_type) {
1745 	/*
1746 	 * increase the bdl size for Glenfly Gpus for hardware
1747 	 * limitation on hdac interrupt interval
1748 	 */
1749 	case AZX_DRIVER_GFHDMI:
1750 		return 128;
1751 	case AZX_DRIVER_ICH:
1752 	case AZX_DRIVER_PCH:
1753 		return 1;
1754 	default:
1755 		return 32;
1756 	}
1757 }
1758 
1759 /*
1760  * constructor
1761  */
1762 static const struct hda_controller_ops pci_hda_ops;
1763 
1764 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1765 		      int dev, unsigned int driver_caps,
1766 		      struct azx **rchip)
1767 {
1768 	static const struct snd_device_ops ops = {
1769 		.dev_disconnect = azx_dev_disconnect,
1770 		.dev_free = azx_dev_free,
1771 	};
1772 	struct hda_intel *hda;
1773 	struct azx *chip;
1774 	int err;
1775 
1776 	*rchip = NULL;
1777 
1778 	err = pcim_enable_device(pci);
1779 	if (err < 0)
1780 		return err;
1781 
1782 	hda = devm_kzalloc(&pci->dev, sizeof(*hda), GFP_KERNEL);
1783 	if (!hda)
1784 		return -ENOMEM;
1785 
1786 	chip = &hda->chip;
1787 	mutex_init(&chip->open_mutex);
1788 	chip->card = card;
1789 	chip->pci = pci;
1790 	chip->ops = &pci_hda_ops;
1791 	chip->driver_caps = driver_caps;
1792 	chip->driver_type = driver_caps & 0xff;
1793 	check_msi(chip);
1794 	chip->dev_index = dev;
1795 	if (jackpoll_ms[dev] >= 50 && jackpoll_ms[dev] <= 60000)
1796 		chip->jackpoll_interval = msecs_to_jiffies(jackpoll_ms[dev]);
1797 	INIT_LIST_HEAD(&chip->pcm_list);
1798 	INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1799 	INIT_LIST_HEAD(&hda->list);
1800 	init_vga_switcheroo(chip);
1801 	init_completion(&hda->probe_wait);
1802 
1803 	assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1804 
1805 	if (single_cmd < 0) /* allow fallback to single_cmd at errors */
1806 		chip->fallback_to_single_cmd = 1;
1807 	else /* explicitly set to single_cmd or not */
1808 		chip->single_cmd = single_cmd;
1809 
1810 	azx_check_snoop_available(chip);
1811 
1812 	if (bdl_pos_adj[dev] < 0)
1813 		chip->bdl_pos_adj = default_bdl_pos_adj(chip);
1814 	else
1815 		chip->bdl_pos_adj = bdl_pos_adj[dev];
1816 
1817 	err = azx_bus_init(chip, model[dev]);
1818 	if (err < 0)
1819 		return err;
1820 
1821 	/* use the non-cached pages in non-snoop mode */
1822 	if (!azx_snoop(chip))
1823 		azx_bus(chip)->dma_type = SNDRV_DMA_TYPE_DEV_WC_SG;
1824 
1825 	if (chip->driver_type == AZX_DRIVER_NVIDIA) {
1826 		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
1827 		chip->bus.core.needs_damn_long_delay = 1;
1828 	}
1829 
1830 	check_probe_mask(chip, dev);
1831 
1832 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1833 	if (err < 0) {
1834 		dev_err(card->dev, "Error creating device [card]!\n");
1835 		azx_free(chip);
1836 		return err;
1837 	}
1838 
1839 	/* continue probing in work context as may trigger request module */
1840 	INIT_DELAYED_WORK(&hda->probe_work, azx_probe_work);
1841 
1842 	*rchip = chip;
1843 
1844 	return 0;
1845 }
1846 
1847 static int azx_first_init(struct azx *chip)
1848 {
1849 	int dev = chip->dev_index;
1850 	struct pci_dev *pci = chip->pci;
1851 	struct snd_card *card = chip->card;
1852 	struct hdac_bus *bus = azx_bus(chip);
1853 	int err;
1854 	unsigned short gcap;
1855 	unsigned int dma_bits = 64;
1856 
1857 #if BITS_PER_LONG != 64
1858 	/* Fix up base address on ULI M5461 */
1859 	if (chip->driver_type == AZX_DRIVER_ULI) {
1860 		u16 tmp3;
1861 		pci_read_config_word(pci, 0x40, &tmp3);
1862 		pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1863 		pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1864 	}
1865 #endif
1866 	/*
1867 	 * Fix response write request not synced to memory when handle
1868 	 * hdac interrupt on Glenfly Gpus
1869 	 */
1870 	if (chip->driver_type == AZX_DRIVER_GFHDMI)
1871 		bus->polling_mode = 1;
1872 
1873 	if (chip->driver_type == AZX_DRIVER_LOONGSON) {
1874 		bus->polling_mode = 1;
1875 		bus->not_use_interrupts = 1;
1876 		bus->access_sdnctl_in_dword = 1;
1877 	}
1878 
1879 	err = pcim_iomap_regions(pci, 1 << 0, "ICH HD audio");
1880 	if (err < 0)
1881 		return err;
1882 
1883 	bus->addr = pci_resource_start(pci, 0);
1884 	bus->remap_addr = pcim_iomap_table(pci)[0];
1885 
1886 	if (chip->driver_type == AZX_DRIVER_SKL)
1887 		snd_hdac_bus_parse_capabilities(bus);
1888 
1889 	/*
1890 	 * Some Intel CPUs has always running timer (ART) feature and
1891 	 * controller may have Global time sync reporting capability, so
1892 	 * check both of these before declaring synchronized time reporting
1893 	 * capability SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME
1894 	 */
1895 	chip->gts_present = false;
1896 
1897 #ifdef CONFIG_X86
1898 	if (bus->ppcap && boot_cpu_has(X86_FEATURE_ART))
1899 		chip->gts_present = true;
1900 #endif
1901 
1902 	if (chip->msi) {
1903 		if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
1904 			dev_dbg(card->dev, "Disabling 64bit MSI\n");
1905 			pci->no_64bit_msi = true;
1906 		}
1907 		if (pci_enable_msi(pci) < 0)
1908 			chip->msi = 0;
1909 	}
1910 
1911 	pci_set_master(pci);
1912 
1913 	gcap = azx_readw(chip, GCAP);
1914 	dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1915 
1916 	/* AMD devices support 40 or 48bit DMA, take the safe one */
1917 	if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
1918 		dma_bits = 40;
1919 
1920 	/* disable SB600 64bit support for safety */
1921 	if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1922 		struct pci_dev *p_smbus;
1923 		dma_bits = 40;
1924 		p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1925 					 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1926 					 NULL);
1927 		if (p_smbus) {
1928 			if (p_smbus->revision < 0x30)
1929 				gcap &= ~AZX_GCAP_64OK;
1930 			pci_dev_put(p_smbus);
1931 		}
1932 	}
1933 
1934 	/* NVidia hardware normally only supports up to 40 bits of DMA */
1935 	if (chip->pci->vendor == PCI_VENDOR_ID_NVIDIA)
1936 		dma_bits = 40;
1937 
1938 	/* disable 64bit DMA address on some devices */
1939 	if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1940 		dev_dbg(card->dev, "Disabling 64bit DMA\n");
1941 		gcap &= ~AZX_GCAP_64OK;
1942 	}
1943 
1944 	/* disable buffer size rounding to 128-byte multiples if supported */
1945 	if (align_buffer_size >= 0)
1946 		chip->align_buffer_size = !!align_buffer_size;
1947 	else {
1948 		if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
1949 			chip->align_buffer_size = 0;
1950 		else
1951 			chip->align_buffer_size = 1;
1952 	}
1953 
1954 	/* allow 64bit DMA address if supported by H/W */
1955 	if (!(gcap & AZX_GCAP_64OK))
1956 		dma_bits = 32;
1957 	if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(dma_bits)))
1958 		dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32));
1959 	dma_set_max_seg_size(&pci->dev, UINT_MAX);
1960 
1961 	/* read number of streams from GCAP register instead of using
1962 	 * hardcoded value
1963 	 */
1964 	chip->capture_streams = (gcap >> 8) & 0x0f;
1965 	chip->playback_streams = (gcap >> 12) & 0x0f;
1966 	if (!chip->playback_streams && !chip->capture_streams) {
1967 		/* gcap didn't give any info, switching to old method */
1968 
1969 		switch (chip->driver_type) {
1970 		case AZX_DRIVER_ULI:
1971 			chip->playback_streams = ULI_NUM_PLAYBACK;
1972 			chip->capture_streams = ULI_NUM_CAPTURE;
1973 			break;
1974 		case AZX_DRIVER_ATIHDMI:
1975 		case AZX_DRIVER_ATIHDMI_NS:
1976 			chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1977 			chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1978 			break;
1979 		case AZX_DRIVER_GFHDMI:
1980 		case AZX_DRIVER_GENERIC:
1981 		default:
1982 			chip->playback_streams = ICH6_NUM_PLAYBACK;
1983 			chip->capture_streams = ICH6_NUM_CAPTURE;
1984 			break;
1985 		}
1986 	}
1987 	chip->capture_index_offset = 0;
1988 	chip->playback_index_offset = chip->capture_streams;
1989 	chip->num_streams = chip->playback_streams + chip->capture_streams;
1990 
1991 	/* sanity check for the SDxCTL.STRM field overflow */
1992 	if (chip->num_streams > 15 &&
1993 	    (chip->driver_caps & AZX_DCAPS_SEPARATE_STREAM_TAG) == 0) {
1994 		dev_warn(chip->card->dev, "number of I/O streams is %d, "
1995 			 "forcing separate stream tags", chip->num_streams);
1996 		chip->driver_caps |= AZX_DCAPS_SEPARATE_STREAM_TAG;
1997 	}
1998 
1999 	/* initialize streams */
2000 	err = azx_init_streams(chip);
2001 	if (err < 0)
2002 		return err;
2003 
2004 	err = azx_alloc_stream_pages(chip);
2005 	if (err < 0)
2006 		return err;
2007 
2008 	/* initialize chip */
2009 	azx_init_pci(chip);
2010 
2011 	snd_hdac_i915_set_bclk(bus);
2012 
2013 	hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
2014 
2015 	/* codec detection */
2016 	if (!azx_bus(chip)->codec_mask) {
2017 		dev_err(card->dev, "no codecs found!\n");
2018 		/* keep running the rest for the runtime PM */
2019 	}
2020 
2021 	if (azx_acquire_irq(chip, 0) < 0)
2022 		return -EBUSY;
2023 
2024 	strcpy(card->driver, "HDA-Intel");
2025 	strscpy(card->shortname, driver_short_names[chip->driver_type],
2026 		sizeof(card->shortname));
2027 	snprintf(card->longname, sizeof(card->longname),
2028 		 "%s at 0x%lx irq %i",
2029 		 card->shortname, bus->addr, bus->irq);
2030 
2031 	return 0;
2032 }
2033 
2034 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2035 /* callback from request_firmware_nowait() */
2036 static void azx_firmware_cb(const struct firmware *fw, void *context)
2037 {
2038 	struct snd_card *card = context;
2039 	struct azx *chip = card->private_data;
2040 
2041 	if (fw)
2042 		chip->fw = fw;
2043 	else
2044 		dev_err(card->dev, "Cannot load firmware, continue without patching\n");
2045 	if (!chip->disabled) {
2046 		/* continue probing */
2047 		azx_probe_continue(chip);
2048 	}
2049 }
2050 #endif
2051 
2052 static int disable_msi_reset_irq(struct azx *chip)
2053 {
2054 	struct hdac_bus *bus = azx_bus(chip);
2055 	int err;
2056 
2057 	free_irq(bus->irq, chip);
2058 	bus->irq = -1;
2059 	chip->card->sync_irq = -1;
2060 	pci_disable_msi(chip->pci);
2061 	chip->msi = 0;
2062 	err = azx_acquire_irq(chip, 1);
2063 	if (err < 0)
2064 		return err;
2065 
2066 	return 0;
2067 }
2068 
2069 /* Denylist for skipping the whole probe:
2070  * some HD-audio PCI entries are exposed without any codecs, and such devices
2071  * should be ignored from the beginning.
2072  */
2073 static const struct pci_device_id driver_denylist[] = {
2074 	{ PCI_DEVICE_SUB(0x1022, 0x1487, 0x1043, 0x874f) }, /* ASUS ROG Zenith II / Strix */
2075 	{ PCI_DEVICE_SUB(0x1022, 0x1487, 0x1462, 0xcb59) }, /* MSI TRX40 Creator */
2076 	{ PCI_DEVICE_SUB(0x1022, 0x1487, 0x1462, 0xcb60) }, /* MSI TRX40 */
2077 	{}
2078 };
2079 
2080 static const struct hda_controller_ops pci_hda_ops = {
2081 	.disable_msi_reset_irq = disable_msi_reset_irq,
2082 	.position_check = azx_position_check,
2083 };
2084 
2085 static DECLARE_BITMAP(probed_devs, SNDRV_CARDS);
2086 
2087 static int azx_probe(struct pci_dev *pci,
2088 		     const struct pci_device_id *pci_id)
2089 {
2090 	struct snd_card *card;
2091 	struct hda_intel *hda;
2092 	struct azx *chip;
2093 	bool schedule_probe;
2094 	int dev;
2095 	int err;
2096 
2097 	if (pci_match_id(driver_denylist, pci)) {
2098 		dev_info(&pci->dev, "Skipping the device on the denylist\n");
2099 		return -ENODEV;
2100 	}
2101 
2102 	dev = find_first_zero_bit(probed_devs, SNDRV_CARDS);
2103 	if (dev >= SNDRV_CARDS)
2104 		return -ENODEV;
2105 	if (!enable[dev]) {
2106 		set_bit(dev, probed_devs);
2107 		return -ENOENT;
2108 	}
2109 
2110 	/*
2111 	 * stop probe if another Intel's DSP driver should be activated
2112 	 */
2113 	if (dmic_detect) {
2114 		err = snd_intel_dsp_driver_probe(pci);
2115 		if (err != SND_INTEL_DSP_DRIVER_ANY && err != SND_INTEL_DSP_DRIVER_LEGACY) {
2116 			dev_dbg(&pci->dev, "HDAudio driver not selected, aborting probe\n");
2117 			return -ENODEV;
2118 		}
2119 	} else {
2120 		dev_warn(&pci->dev, "dmic_detect option is deprecated, pass snd-intel-dspcfg.dsp_driver=1 option instead\n");
2121 	}
2122 
2123 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2124 			   0, &card);
2125 	if (err < 0) {
2126 		dev_err(&pci->dev, "Error creating card!\n");
2127 		return err;
2128 	}
2129 
2130 	err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
2131 	if (err < 0)
2132 		goto out_free;
2133 	card->private_data = chip;
2134 	hda = container_of(chip, struct hda_intel, chip);
2135 
2136 	pci_set_drvdata(pci, card);
2137 
2138 	err = register_vga_switcheroo(chip);
2139 	if (err < 0) {
2140 		dev_err(card->dev, "Error registering vga_switcheroo client\n");
2141 		goto out_free;
2142 	}
2143 
2144 	if (check_hdmi_disabled(pci)) {
2145 		dev_info(card->dev, "VGA controller is disabled\n");
2146 		dev_info(card->dev, "Delaying initialization\n");
2147 		chip->disabled = true;
2148 	}
2149 
2150 	schedule_probe = !chip->disabled;
2151 
2152 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2153 	if (patch[dev] && *patch[dev]) {
2154 		dev_info(card->dev, "Applying patch firmware '%s'\n",
2155 			 patch[dev]);
2156 		err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
2157 					      &pci->dev, GFP_KERNEL, card,
2158 					      azx_firmware_cb);
2159 		if (err < 0)
2160 			goto out_free;
2161 		schedule_probe = false; /* continued in azx_firmware_cb() */
2162 	}
2163 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
2164 
2165 #ifndef CONFIG_SND_HDA_I915
2166 	if (HDA_CONTROLLER_IN_GPU(pci))
2167 		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
2168 #endif
2169 
2170 	if (schedule_probe)
2171 		schedule_delayed_work(&hda->probe_work, 0);
2172 
2173 	set_bit(dev, probed_devs);
2174 	if (chip->disabled)
2175 		complete_all(&hda->probe_wait);
2176 	return 0;
2177 
2178 out_free:
2179 	snd_card_free(card);
2180 	return err;
2181 }
2182 
2183 #ifdef CONFIG_PM
2184 /* On some boards setting power_save to a non 0 value leads to clicking /
2185  * popping sounds when ever we enter/leave powersaving mode. Ideally we would
2186  * figure out how to avoid these sounds, but that is not always feasible.
2187  * So we keep a list of devices where we disable powersaving as its known
2188  * to causes problems on these devices.
2189  */
2190 static const struct snd_pci_quirk power_save_denylist[] = {
2191 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2192 	SND_PCI_QUIRK(0x1849, 0xc892, "Asrock B85M-ITX", 0),
2193 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2194 	SND_PCI_QUIRK(0x1849, 0x0397, "Asrock N68C-S UCC", 0),
2195 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2196 	SND_PCI_QUIRK(0x1849, 0x7662, "Asrock H81M-HDS", 0),
2197 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2198 	SND_PCI_QUIRK(0x1043, 0x8733, "Asus Prime X370-Pro", 0),
2199 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2200 	SND_PCI_QUIRK(0x1028, 0x0497, "Dell Precision T3600", 0),
2201 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2202 	/* Note the P55A-UD3 and Z87-D3HP share the subsys id for the HDA dev */
2203 	SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte P55A-UD3 / Z87-D3HP", 0),
2204 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2205 	SND_PCI_QUIRK(0x8086, 0x2040, "Intel DZ77BH-55K", 0),
2206 	/* https://bugzilla.kernel.org/show_bug.cgi?id=199607 */
2207 	SND_PCI_QUIRK(0x8086, 0x2057, "Intel NUC5i7RYB", 0),
2208 	/* https://bugs.launchpad.net/bugs/1821663 */
2209 	SND_PCI_QUIRK(0x8086, 0x2064, "Intel SDP 8086:2064", 0),
2210 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1520902 */
2211 	SND_PCI_QUIRK(0x8086, 0x2068, "Intel NUC7i3BNB", 0),
2212 	/* https://bugzilla.kernel.org/show_bug.cgi?id=198611 */
2213 	SND_PCI_QUIRK(0x17aa, 0x2227, "Lenovo X1 Carbon 3rd Gen", 0),
2214 	SND_PCI_QUIRK(0x17aa, 0x316e, "Lenovo ThinkCentre M70q", 0),
2215 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1689623 */
2216 	SND_PCI_QUIRK(0x17aa, 0x367b, "Lenovo IdeaCentre B550", 0),
2217 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1572975 */
2218 	SND_PCI_QUIRK(0x17aa, 0x36a7, "Lenovo C50 All in one", 0),
2219 	/* https://bugs.launchpad.net/bugs/1821663 */
2220 	SND_PCI_QUIRK(0x1631, 0xe017, "Packard Bell NEC IMEDIA 5204", 0),
2221 	{}
2222 };
2223 #endif /* CONFIG_PM */
2224 
2225 static void set_default_power_save(struct azx *chip)
2226 {
2227 	int val = power_save;
2228 
2229 #ifdef CONFIG_PM
2230 	if (pm_blacklist) {
2231 		const struct snd_pci_quirk *q;
2232 
2233 		q = snd_pci_quirk_lookup(chip->pci, power_save_denylist);
2234 		if (q && val) {
2235 			dev_info(chip->card->dev, "device %04x:%04x is on the power_save denylist, forcing power_save to 0\n",
2236 				 q->subvendor, q->subdevice);
2237 			val = 0;
2238 		}
2239 	}
2240 #endif /* CONFIG_PM */
2241 	snd_hda_set_power_save(&chip->bus, val * 1000);
2242 }
2243 
2244 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
2245 static const unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
2246 	[AZX_DRIVER_NVIDIA] = 8,
2247 	[AZX_DRIVER_TERA] = 1,
2248 };
2249 
2250 static int azx_probe_continue(struct azx *chip)
2251 {
2252 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
2253 	struct hdac_bus *bus = azx_bus(chip);
2254 	struct pci_dev *pci = chip->pci;
2255 	int dev = chip->dev_index;
2256 	int err;
2257 
2258 	if (chip->disabled || hda->init_failed)
2259 		return -EIO;
2260 	if (hda->probe_retry)
2261 		goto probe_retry;
2262 
2263 	to_hda_bus(bus)->bus_probing = 1;
2264 	hda->probe_continued = 1;
2265 
2266 	/* bind with i915 if needed */
2267 	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
2268 		err = snd_hdac_i915_init(bus);
2269 		if (err < 0) {
2270 			/* if the controller is bound only with HDMI/DP
2271 			 * (for HSW and BDW), we need to abort the probe;
2272 			 * for other chips, still continue probing as other
2273 			 * codecs can be on the same link.
2274 			 */
2275 			if (HDA_CONTROLLER_IN_GPU(pci)) {
2276 				dev_err(chip->card->dev,
2277 					"HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
2278 				goto out_free;
2279 			} else {
2280 				/* don't bother any longer */
2281 				chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
2282 			}
2283 		}
2284 
2285 		/* HSW/BDW controllers need this power */
2286 		if (HDA_CONTROLLER_IN_GPU(pci))
2287 			hda->need_i915_power = true;
2288 	}
2289 
2290 	/* Request display power well for the HDA controller or codec. For
2291 	 * Haswell/Broadwell, both the display HDA controller and codec need
2292 	 * this power. For other platforms, like Baytrail/Braswell, only the
2293 	 * display codec needs the power and it can be released after probe.
2294 	 */
2295 	display_power(chip, true);
2296 
2297 	err = azx_first_init(chip);
2298 	if (err < 0)
2299 		goto out_free;
2300 
2301 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2302 	chip->beep_mode = beep_mode[dev];
2303 #endif
2304 
2305 	chip->ctl_dev_id = ctl_dev_id;
2306 
2307 	/* create codec instances */
2308 	if (bus->codec_mask) {
2309 		err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
2310 		if (err < 0)
2311 			goto out_free;
2312 	}
2313 
2314 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2315 	if (chip->fw) {
2316 		err = snd_hda_load_patch(&chip->bus, chip->fw->size,
2317 					 chip->fw->data);
2318 		if (err < 0)
2319 			goto out_free;
2320 #ifndef CONFIG_PM
2321 		release_firmware(chip->fw); /* no longer needed */
2322 		chip->fw = NULL;
2323 #endif
2324 	}
2325 #endif
2326 
2327  probe_retry:
2328 	if (bus->codec_mask && !(probe_only[dev] & 1)) {
2329 		err = azx_codec_configure(chip);
2330 		if (err) {
2331 			if ((chip->driver_caps & AZX_DCAPS_RETRY_PROBE) &&
2332 			    ++hda->probe_retry < 60) {
2333 				schedule_delayed_work(&hda->probe_work,
2334 						      msecs_to_jiffies(1000));
2335 				return 0; /* keep things up */
2336 			}
2337 			dev_err(chip->card->dev, "Cannot probe codecs, giving up\n");
2338 			goto out_free;
2339 		}
2340 	}
2341 
2342 	err = snd_card_register(chip->card);
2343 	if (err < 0)
2344 		goto out_free;
2345 
2346 	setup_vga_switcheroo_runtime_pm(chip);
2347 
2348 	chip->running = 1;
2349 	azx_add_card_list(chip);
2350 
2351 	set_default_power_save(chip);
2352 
2353 	if (azx_has_pm_runtime(chip)) {
2354 		pm_runtime_use_autosuspend(&pci->dev);
2355 		pm_runtime_allow(&pci->dev);
2356 		pm_runtime_put_autosuspend(&pci->dev);
2357 	}
2358 
2359 out_free:
2360 	if (err < 0) {
2361 		pci_set_drvdata(pci, NULL);
2362 		snd_card_free(chip->card);
2363 		return err;
2364 	}
2365 
2366 	if (!hda->need_i915_power)
2367 		display_power(chip, false);
2368 	complete_all(&hda->probe_wait);
2369 	to_hda_bus(bus)->bus_probing = 0;
2370 	hda->probe_retry = 0;
2371 	return 0;
2372 }
2373 
2374 static void azx_remove(struct pci_dev *pci)
2375 {
2376 	struct snd_card *card = pci_get_drvdata(pci);
2377 	struct azx *chip;
2378 	struct hda_intel *hda;
2379 
2380 	if (card) {
2381 		/* cancel the pending probing work */
2382 		chip = card->private_data;
2383 		hda = container_of(chip, struct hda_intel, chip);
2384 		/* FIXME: below is an ugly workaround.
2385 		 * Both device_release_driver() and driver_probe_device()
2386 		 * take *both* the device's and its parent's lock before
2387 		 * calling the remove() and probe() callbacks.  The codec
2388 		 * probe takes the locks of both the codec itself and its
2389 		 * parent, i.e. the PCI controller dev.  Meanwhile, when
2390 		 * the PCI controller is unbound, it takes its lock, too
2391 		 * ==> ouch, a deadlock!
2392 		 * As a workaround, we unlock temporarily here the controller
2393 		 * device during cancel_work_sync() call.
2394 		 */
2395 		device_unlock(&pci->dev);
2396 		cancel_delayed_work_sync(&hda->probe_work);
2397 		device_lock(&pci->dev);
2398 
2399 		clear_bit(chip->dev_index, probed_devs);
2400 		pci_set_drvdata(pci, NULL);
2401 		snd_card_free(card);
2402 	}
2403 }
2404 
2405 static void azx_shutdown(struct pci_dev *pci)
2406 {
2407 	struct snd_card *card = pci_get_drvdata(pci);
2408 	struct azx *chip;
2409 
2410 	if (!card)
2411 		return;
2412 	chip = card->private_data;
2413 	if (chip && chip->running)
2414 		__azx_shutdown_chip(chip, true);
2415 }
2416 
2417 /* PCI IDs */
2418 static const struct pci_device_id azx_ids[] = {
2419 	/* CPT */
2420 	{ PCI_DEVICE_DATA(INTEL, HDA_CPT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM) },
2421 	/* PBG */
2422 	{ PCI_DEVICE_DATA(INTEL, HDA_PBG, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM) },
2423 	/* Panther Point */
2424 	{ PCI_DEVICE_DATA(INTEL, HDA_PPT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM) },
2425 	/* Lynx Point */
2426 	{ PCI_DEVICE_DATA(INTEL, HDA_LPT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
2427 	/* 9 Series */
2428 	{ PCI_DEVICE_DATA(INTEL, HDA_9_SERIES, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
2429 	/* Wellsburg */
2430 	{ PCI_DEVICE_DATA(INTEL, HDA_WBG_0, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
2431 	{ PCI_DEVICE_DATA(INTEL, HDA_WBG_1, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
2432 	/* Lewisburg */
2433 	{ PCI_DEVICE_DATA(INTEL, HDA_LBG_0, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE) },
2434 	{ PCI_DEVICE_DATA(INTEL, HDA_LBG_1, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE) },
2435 	/* Lynx Point-LP */
2436 	{ PCI_DEVICE_DATA(INTEL, HDA_LPT_LP_0, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
2437 	/* Lynx Point-LP */
2438 	{ PCI_DEVICE_DATA(INTEL, HDA_LPT_LP_1, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
2439 	/* Wildcat Point-LP */
2440 	{ PCI_DEVICE_DATA(INTEL, HDA_WPT_LP, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH) },
2441 	/* Skylake (Sunrise Point) */
2442 	{ PCI_DEVICE_DATA(INTEL, HDA_SKL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2443 	/* Skylake-LP (Sunrise Point-LP) */
2444 	{ PCI_DEVICE_DATA(INTEL, HDA_SKL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2445 	/* Kabylake */
2446 	{ PCI_DEVICE_DATA(INTEL, HDA_KBL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2447 	/* Kabylake-LP */
2448 	{ PCI_DEVICE_DATA(INTEL, HDA_KBL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2449 	/* Kabylake-H */
2450 	{ PCI_DEVICE_DATA(INTEL, HDA_KBL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2451 	/* Coffelake */
2452 	{ PCI_DEVICE_DATA(INTEL, HDA_CNL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2453 	/* Cannonlake */
2454 	{ PCI_DEVICE_DATA(INTEL, HDA_CNL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2455 	/* CometLake-LP */
2456 	{ PCI_DEVICE_DATA(INTEL, HDA_CML_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2457 	/* CometLake-H */
2458 	{ PCI_DEVICE_DATA(INTEL, HDA_CML_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2459 	{ PCI_DEVICE_DATA(INTEL, HDA_RKL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2460 	/* CometLake-S */
2461 	{ PCI_DEVICE_DATA(INTEL, HDA_CML_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2462 	/* CometLake-R */
2463 	{ PCI_DEVICE_DATA(INTEL, HDA_CML_R, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2464 	/* Icelake */
2465 	{ PCI_DEVICE_DATA(INTEL, HDA_ICL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2466 	/* Icelake-H */
2467 	{ PCI_DEVICE_DATA(INTEL, HDA_ICL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2468 	/* Jasperlake */
2469 	{ PCI_DEVICE_DATA(INTEL, HDA_ICL_N, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2470 	{ PCI_DEVICE_DATA(INTEL, HDA_JSL_N, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2471 	/* Tigerlake */
2472 	{ PCI_DEVICE_DATA(INTEL, HDA_TGL_LP, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2473 	/* Tigerlake-H */
2474 	{ PCI_DEVICE_DATA(INTEL, HDA_TGL_H, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2475 	/* DG1 */
2476 	{ PCI_DEVICE_DATA(INTEL, HDA_DG1, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2477 	/* DG2 */
2478 	{ PCI_DEVICE_DATA(INTEL, HDA_DG2_0, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2479 	{ PCI_DEVICE_DATA(INTEL, HDA_DG2_1, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2480 	{ PCI_DEVICE_DATA(INTEL, HDA_DG2_2, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2481 	/* Alderlake-S */
2482 	{ PCI_DEVICE_DATA(INTEL, HDA_ADL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2483 	/* Alderlake-P */
2484 	{ PCI_DEVICE_DATA(INTEL, HDA_ADL_P, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2485 	{ PCI_DEVICE_DATA(INTEL, HDA_ADL_PS, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2486 	{ PCI_DEVICE_DATA(INTEL, HDA_ADL_PX, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2487 	/* Alderlake-M */
2488 	{ PCI_DEVICE_DATA(INTEL, HDA_ADL_M, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2489 	/* Alderlake-N */
2490 	{ PCI_DEVICE_DATA(INTEL, HDA_ADL_N, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2491 	/* Elkhart Lake */
2492 	{ PCI_DEVICE_DATA(INTEL, HDA_EHL_0, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2493 	{ PCI_DEVICE_DATA(INTEL, HDA_EHL_3, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2494 	/* Raptor Lake */
2495 	{ PCI_DEVICE_DATA(INTEL, HDA_RPL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2496 	{ PCI_DEVICE_DATA(INTEL, HDA_RPL_P_0, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2497 	{ PCI_DEVICE_DATA(INTEL, HDA_RPL_P_1, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2498 	{ PCI_DEVICE_DATA(INTEL, HDA_RPL_M, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2499 	{ PCI_DEVICE_DATA(INTEL, HDA_RPL_PX, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2500 	{ PCI_DEVICE_DATA(INTEL, HDA_MTL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2501 	/* Lunarlake-P */
2502 	{ PCI_DEVICE_DATA(INTEL, HDA_LNL_P, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2503 	/* Arrow Lake-S */
2504 	{ PCI_DEVICE_DATA(INTEL, HDA_ARL_S, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE) },
2505 	/* Apollolake (Broxton-P) */
2506 	{ PCI_DEVICE_DATA(INTEL, HDA_APL, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON) },
2507 	/* Gemini-Lake */
2508 	{ PCI_DEVICE_DATA(INTEL, HDA_GML, AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON) },
2509 	/* Haswell */
2510 	{ PCI_DEVICE_DATA(INTEL, HDA_HSW_0, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL) },
2511 	{ PCI_DEVICE_DATA(INTEL, HDA_HSW_2, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL) },
2512 	{ PCI_DEVICE_DATA(INTEL, HDA_HSW_3, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL) },
2513 	/* Broadwell */
2514 	{ PCI_DEVICE_DATA(INTEL, HDA_BDW, AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL) },
2515 	/* 5 Series/3400 */
2516 	{ PCI_DEVICE_DATA(INTEL, HDA_5_3400_SERIES_0, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM) },
2517 	{ PCI_DEVICE_DATA(INTEL, HDA_5_3400_SERIES_1, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM) },
2518 	/* Poulsbo */
2519 	{ PCI_DEVICE_DATA(INTEL, HDA_POULSBO, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE |
2520 	  AZX_DCAPS_POSFIX_LPIB) },
2521 	/* Oaktrail */
2522 	{ PCI_DEVICE_DATA(INTEL, HDA_OAKTRAIL, AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE) },
2523 	/* BayTrail */
2524 	{ PCI_DEVICE_DATA(INTEL, HDA_BYT, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL) },
2525 	/* Braswell */
2526 	{ PCI_DEVICE_DATA(INTEL, HDA_BSW, AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL) },
2527 	/* ICH6 */
2528 	{ PCI_DEVICE_DATA(INTEL, HDA_ICH6, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2529 	/* ICH7 */
2530 	{ PCI_DEVICE_DATA(INTEL, HDA_ICH7, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2531 	/* ESB2 */
2532 	{ PCI_DEVICE_DATA(INTEL, HDA_ESB2, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2533 	/* ICH8 */
2534 	{ PCI_DEVICE_DATA(INTEL, HDA_ICH8, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2535 	/* ICH9 */
2536 	{ PCI_DEVICE_DATA(INTEL, HDA_ICH9_0, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2537 	/* ICH9 */
2538 	{ PCI_DEVICE_DATA(INTEL, HDA_ICH9_1, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2539 	/* ICH10 */
2540 	{ PCI_DEVICE_DATA(INTEL, HDA_ICH10_0, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2541 	/* ICH10 */
2542 	{ PCI_DEVICE_DATA(INTEL, HDA_ICH10_1, AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH) },
2543 	/* Generic Intel */
2544 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2545 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2546 	  .class_mask = 0xffffff,
2547 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
2548 	/* ATI SB 450/600/700/800/900 */
2549 	{ PCI_VDEVICE(ATI, 0x437b),
2550 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2551 	{ PCI_VDEVICE(ATI, 0x4383),
2552 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2553 	/* AMD Hudson */
2554 	{ PCI_VDEVICE(AMD, 0x780d),
2555 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2556 	/* AMD, X370 & co */
2557 	{ PCI_VDEVICE(AMD, 0x1457),
2558 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
2559 	/* AMD, X570 & co */
2560 	{ PCI_VDEVICE(AMD, 0x1487),
2561 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
2562 	/* AMD Stoney */
2563 	{ PCI_VDEVICE(AMD, 0x157a),
2564 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB |
2565 			 AZX_DCAPS_PM_RUNTIME },
2566 	/* AMD Raven */
2567 	{ PCI_VDEVICE(AMD, 0x15e3),
2568 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_AMD_SB },
2569 	/* ATI HDMI */
2570 	{ PCI_VDEVICE(ATI, 0x0002),
2571 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2572 	  AZX_DCAPS_PM_RUNTIME },
2573 	{ PCI_VDEVICE(ATI, 0x1308),
2574 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2575 	{ PCI_VDEVICE(ATI, 0x157a),
2576 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2577 	{ PCI_VDEVICE(ATI, 0x15b3),
2578 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2579 	{ PCI_VDEVICE(ATI, 0x793b),
2580 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2581 	{ PCI_VDEVICE(ATI, 0x7919),
2582 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2583 	{ PCI_VDEVICE(ATI, 0x960f),
2584 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2585 	{ PCI_VDEVICE(ATI, 0x970f),
2586 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2587 	{ PCI_VDEVICE(ATI, 0x9840),
2588 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2589 	{ PCI_VDEVICE(ATI, 0xaa00),
2590 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2591 	{ PCI_VDEVICE(ATI, 0xaa08),
2592 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2593 	{ PCI_VDEVICE(ATI, 0xaa10),
2594 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2595 	{ PCI_VDEVICE(ATI, 0xaa18),
2596 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2597 	{ PCI_VDEVICE(ATI, 0xaa20),
2598 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2599 	{ PCI_VDEVICE(ATI, 0xaa28),
2600 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2601 	{ PCI_VDEVICE(ATI, 0xaa30),
2602 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2603 	{ PCI_VDEVICE(ATI, 0xaa38),
2604 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2605 	{ PCI_VDEVICE(ATI, 0xaa40),
2606 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2607 	{ PCI_VDEVICE(ATI, 0xaa48),
2608 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2609 	{ PCI_VDEVICE(ATI, 0xaa50),
2610 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2611 	{ PCI_VDEVICE(ATI, 0xaa58),
2612 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2613 	{ PCI_VDEVICE(ATI, 0xaa60),
2614 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2615 	{ PCI_VDEVICE(ATI, 0xaa68),
2616 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2617 	{ PCI_VDEVICE(ATI, 0xaa80),
2618 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2619 	{ PCI_VDEVICE(ATI, 0xaa88),
2620 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2621 	{ PCI_VDEVICE(ATI, 0xaa90),
2622 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2623 	{ PCI_VDEVICE(ATI, 0xaa98),
2624 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2625 	{ PCI_VDEVICE(ATI, 0x9902),
2626 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2627 	{ PCI_VDEVICE(ATI, 0xaaa0),
2628 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2629 	{ PCI_VDEVICE(ATI, 0xaaa8),
2630 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2631 	{ PCI_VDEVICE(ATI, 0xaab0),
2632 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2633 	{ PCI_VDEVICE(ATI, 0xaac0),
2634 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2635 	  AZX_DCAPS_PM_RUNTIME },
2636 	{ PCI_VDEVICE(ATI, 0xaac8),
2637 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2638 	  AZX_DCAPS_PM_RUNTIME },
2639 	{ PCI_VDEVICE(ATI, 0xaad8),
2640 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2641 	  AZX_DCAPS_PM_RUNTIME },
2642 	{ PCI_VDEVICE(ATI, 0xaae0),
2643 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2644 	  AZX_DCAPS_PM_RUNTIME },
2645 	{ PCI_VDEVICE(ATI, 0xaae8),
2646 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2647 	  AZX_DCAPS_PM_RUNTIME },
2648 	{ PCI_VDEVICE(ATI, 0xaaf0),
2649 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2650 	  AZX_DCAPS_PM_RUNTIME },
2651 	{ PCI_VDEVICE(ATI, 0xaaf8),
2652 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2653 	  AZX_DCAPS_PM_RUNTIME },
2654 	{ PCI_VDEVICE(ATI, 0xab00),
2655 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2656 	  AZX_DCAPS_PM_RUNTIME },
2657 	{ PCI_VDEVICE(ATI, 0xab08),
2658 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2659 	  AZX_DCAPS_PM_RUNTIME },
2660 	{ PCI_VDEVICE(ATI, 0xab10),
2661 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2662 	  AZX_DCAPS_PM_RUNTIME },
2663 	{ PCI_VDEVICE(ATI, 0xab18),
2664 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2665 	  AZX_DCAPS_PM_RUNTIME },
2666 	{ PCI_VDEVICE(ATI, 0xab20),
2667 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2668 	  AZX_DCAPS_PM_RUNTIME },
2669 	{ PCI_VDEVICE(ATI, 0xab28),
2670 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2671 	  AZX_DCAPS_PM_RUNTIME },
2672 	{ PCI_VDEVICE(ATI, 0xab30),
2673 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2674 	  AZX_DCAPS_PM_RUNTIME },
2675 	{ PCI_VDEVICE(ATI, 0xab38),
2676 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS |
2677 	  AZX_DCAPS_PM_RUNTIME },
2678 	/* GLENFLY */
2679 	{ PCI_DEVICE(0x6766, PCI_ANY_ID),
2680 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2681 	  .class_mask = 0xffffff,
2682 	  .driver_data = AZX_DRIVER_GFHDMI | AZX_DCAPS_POSFIX_LPIB |
2683 	  AZX_DCAPS_NO_MSI | AZX_DCAPS_NO_64BIT },
2684 	/* VIA VT8251/VT8237A */
2685 	{ PCI_VDEVICE(VIA, 0x3288), .driver_data = AZX_DRIVER_VIA },
2686 	/* VIA GFX VT7122/VX900 */
2687 	{ PCI_VDEVICE(VIA, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2688 	/* VIA GFX VT6122/VX11 */
2689 	{ PCI_VDEVICE(VIA, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2690 	/* SIS966 */
2691 	{ PCI_VDEVICE(SI, 0x7502), .driver_data = AZX_DRIVER_SIS },
2692 	/* ULI M5461 */
2693 	{ PCI_VDEVICE(AL, 0x5461), .driver_data = AZX_DRIVER_ULI },
2694 	/* NVIDIA MCP */
2695 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2696 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2697 	  .class_mask = 0xffffff,
2698 	  .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2699 	/* Teradici */
2700 	{ PCI_DEVICE(0x6549, 0x1200),
2701 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2702 	{ PCI_DEVICE(0x6549, 0x2200),
2703 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2704 	/* Creative X-Fi (CA0110-IBG) */
2705 	/* CTHDA chips */
2706 	{ PCI_VDEVICE(CREATIVE, 0x0010),
2707 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2708 	{ PCI_VDEVICE(CREATIVE, 0x0012),
2709 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2710 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2711 	/* the following entry conflicts with snd-ctxfi driver,
2712 	 * as ctxfi driver mutates from HD-audio to native mode with
2713 	 * a special command sequence.
2714 	 */
2715 	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2716 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2717 	  .class_mask = 0xffffff,
2718 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2719 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2720 #else
2721 	/* this entry seems still valid -- i.e. without emu20kx chip */
2722 	{ PCI_VDEVICE(CREATIVE, 0x0009),
2723 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2724 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2725 #endif
2726 	/* CM8888 */
2727 	{ PCI_VDEVICE(CMEDIA, 0x5011),
2728 	  .driver_data = AZX_DRIVER_CMEDIA |
2729 	  AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
2730 	/* Vortex86MX */
2731 	{ PCI_VDEVICE(RDC, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2732 	/* VMware HDAudio */
2733 	{ PCI_VDEVICE(VMWARE, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2734 	/* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2735 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2736 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2737 	  .class_mask = 0xffffff,
2738 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2739 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2740 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2741 	  .class_mask = 0xffffff,
2742 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2743 	/* Zhaoxin */
2744 	{ PCI_VDEVICE(ZHAOXIN, 0x3288), .driver_data = AZX_DRIVER_ZHAOXIN },
2745 	/* Loongson HDAudio*/
2746 	{ PCI_VDEVICE(LOONGSON, PCI_DEVICE_ID_LOONGSON_HDA),
2747 	  .driver_data = AZX_DRIVER_LOONGSON },
2748 	{ PCI_VDEVICE(LOONGSON, PCI_DEVICE_ID_LOONGSON_HDMI),
2749 	  .driver_data = AZX_DRIVER_LOONGSON },
2750 	{ 0, }
2751 };
2752 MODULE_DEVICE_TABLE(pci, azx_ids);
2753 
2754 /* pci_driver definition */
2755 static struct pci_driver azx_driver = {
2756 	.name = KBUILD_MODNAME,
2757 	.id_table = azx_ids,
2758 	.probe = azx_probe,
2759 	.remove = azx_remove,
2760 	.shutdown = azx_shutdown,
2761 	.driver = {
2762 		.pm = AZX_PM_OPS,
2763 	},
2764 };
2765 
2766 module_pci_driver(azx_driver);
2767