xref: /openbmc/linux/sound/pci/hda/hda_intel.c (revision 9fb29c73)
1 /*
2  *
3  *  hda_intel.c - Implementation of primary alsa driver code base
4  *                for Intel HD Audio.
5  *
6  *  Copyright(c) 2004 Intel Corporation. All rights reserved.
7  *
8  *  Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
9  *                     PeiSen Hou <pshou@realtek.com.tw>
10  *
11  *  This program is free software; you can redistribute it and/or modify it
12  *  under the terms of the GNU General Public License as published by the Free
13  *  Software Foundation; either version 2 of the License, or (at your option)
14  *  any later version.
15  *
16  *  This program is distributed in the hope that it will be useful, but WITHOUT
17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
19  *  more details.
20  *
21  *  You should have received a copy of the GNU General Public License along with
22  *  this program; if not, write to the Free Software Foundation, Inc., 59
23  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
24  *
25  *  CONTACTS:
26  *
27  *  Matt Jared		matt.jared@intel.com
28  *  Andy Kopp		andy.kopp@intel.com
29  *  Dan Kogan		dan.d.kogan@intel.com
30  *
31  *  CHANGES:
32  *
33  *  2004.12.01	Major rewrite by tiwai, merged the work of pshou
34  *
35  */
36 
37 #include <linux/delay.h>
38 #include <linux/interrupt.h>
39 #include <linux/kernel.h>
40 #include <linux/module.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/moduleparam.h>
43 #include <linux/init.h>
44 #include <linux/slab.h>
45 #include <linux/pci.h>
46 #include <linux/mutex.h>
47 #include <linux/io.h>
48 #include <linux/pm_runtime.h>
49 #include <linux/clocksource.h>
50 #include <linux/time.h>
51 #include <linux/completion.h>
52 
53 #ifdef CONFIG_X86
54 /* for snoop control */
55 #include <asm/pgtable.h>
56 #include <asm/set_memory.h>
57 #include <asm/cpufeature.h>
58 #endif
59 #include <sound/core.h>
60 #include <sound/initval.h>
61 #include <sound/hdaudio.h>
62 #include <sound/hda_i915.h>
63 #include <linux/vgaarb.h>
64 #include <linux/vga_switcheroo.h>
65 #include <linux/firmware.h>
66 #include <sound/hda_codec.h>
67 #include "hda_controller.h"
68 #include "hda_intel.h"
69 
70 #define CREATE_TRACE_POINTS
71 #include "hda_intel_trace.h"
72 
73 /* position fix mode */
74 enum {
75 	POS_FIX_AUTO,
76 	POS_FIX_LPIB,
77 	POS_FIX_POSBUF,
78 	POS_FIX_VIACOMBO,
79 	POS_FIX_COMBO,
80 	POS_FIX_SKL,
81 };
82 
83 /* Defines for ATI HD Audio support in SB450 south bridge */
84 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
85 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
86 
87 /* Defines for Nvidia HDA support */
88 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
89 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
90 #define NVIDIA_HDA_ISTRM_COH          0x4d
91 #define NVIDIA_HDA_OSTRM_COH          0x4c
92 #define NVIDIA_HDA_ENABLE_COHBIT      0x01
93 
94 /* Defines for Intel SCH HDA snoop control */
95 #define INTEL_HDA_CGCTL	 0x48
96 #define INTEL_HDA_CGCTL_MISCBDCGE        (0x1 << 6)
97 #define INTEL_SCH_HDA_DEVC      0x78
98 #define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
99 
100 /* Define IN stream 0 FIFO size offset in VIA controller */
101 #define VIA_IN_STREAM0_FIFO_SIZE_OFFSET	0x90
102 /* Define VIA HD Audio Device ID*/
103 #define VIA_HDAC_DEVICE_ID		0x3288
104 
105 /* max number of SDs */
106 /* ICH, ATI and VIA have 4 playback and 4 capture */
107 #define ICH6_NUM_CAPTURE	4
108 #define ICH6_NUM_PLAYBACK	4
109 
110 /* ULI has 6 playback and 5 capture */
111 #define ULI_NUM_CAPTURE		5
112 #define ULI_NUM_PLAYBACK	6
113 
114 /* ATI HDMI may have up to 8 playbacks and 0 capture */
115 #define ATIHDMI_NUM_CAPTURE	0
116 #define ATIHDMI_NUM_PLAYBACK	8
117 
118 /* TERA has 4 playback and 3 capture */
119 #define TERA_NUM_CAPTURE	3
120 #define TERA_NUM_PLAYBACK	4
121 
122 
123 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
124 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
125 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
126 static char *model[SNDRV_CARDS];
127 static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
128 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
129 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
130 static int probe_only[SNDRV_CARDS];
131 static int jackpoll_ms[SNDRV_CARDS];
132 static int single_cmd = -1;
133 static int enable_msi = -1;
134 #ifdef CONFIG_SND_HDA_PATCH_LOADER
135 static char *patch[SNDRV_CARDS];
136 #endif
137 #ifdef CONFIG_SND_HDA_INPUT_BEEP
138 static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
139 					CONFIG_SND_HDA_INPUT_BEEP_MODE};
140 #endif
141 
142 module_param_array(index, int, NULL, 0444);
143 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
144 module_param_array(id, charp, NULL, 0444);
145 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
146 module_param_array(enable, bool, NULL, 0444);
147 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
148 module_param_array(model, charp, NULL, 0444);
149 MODULE_PARM_DESC(model, "Use the given board model.");
150 module_param_array(position_fix, int, NULL, 0444);
151 MODULE_PARM_DESC(position_fix, "DMA pointer read method."
152 		 "(-1 = system default, 0 = auto, 1 = LPIB, 2 = POSBUF, 3 = VIACOMBO, 4 = COMBO, 5 = SKL+).");
153 module_param_array(bdl_pos_adj, int, NULL, 0644);
154 MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
155 module_param_array(probe_mask, int, NULL, 0444);
156 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
157 module_param_array(probe_only, int, NULL, 0444);
158 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
159 module_param_array(jackpoll_ms, int, NULL, 0444);
160 MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
161 module_param(single_cmd, bint, 0444);
162 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
163 		 "(for debugging only).");
164 module_param(enable_msi, bint, 0444);
165 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
166 #ifdef CONFIG_SND_HDA_PATCH_LOADER
167 module_param_array(patch, charp, NULL, 0444);
168 MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
169 #endif
170 #ifdef CONFIG_SND_HDA_INPUT_BEEP
171 module_param_array(beep_mode, bool, NULL, 0444);
172 MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
173 			    "(0=off, 1=on) (default=1).");
174 #endif
175 
176 #ifdef CONFIG_PM
177 static int param_set_xint(const char *val, const struct kernel_param *kp);
178 static const struct kernel_param_ops param_ops_xint = {
179 	.set = param_set_xint,
180 	.get = param_get_int,
181 };
182 #define param_check_xint param_check_int
183 
184 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
185 module_param(power_save, xint, 0644);
186 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
187 		 "(in second, 0 = disable).");
188 
189 static bool pm_blacklist = true;
190 module_param(pm_blacklist, bool, 0644);
191 MODULE_PARM_DESC(pm_blacklist, "Enable power-management blacklist");
192 
193 /* reset the HD-audio controller in power save mode.
194  * this may give more power-saving, but will take longer time to
195  * wake up.
196  */
197 static bool power_save_controller = 1;
198 module_param(power_save_controller, bool, 0644);
199 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
200 #else
201 #define power_save	0
202 #endif /* CONFIG_PM */
203 
204 static int align_buffer_size = -1;
205 module_param(align_buffer_size, bint, 0644);
206 MODULE_PARM_DESC(align_buffer_size,
207 		"Force buffer and period sizes to be multiple of 128 bytes.");
208 
209 #ifdef CONFIG_X86
210 static int hda_snoop = -1;
211 module_param_named(snoop, hda_snoop, bint, 0444);
212 MODULE_PARM_DESC(snoop, "Enable/disable snooping");
213 #else
214 #define hda_snoop		true
215 #endif
216 
217 
218 MODULE_LICENSE("GPL");
219 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
220 			 "{Intel, ICH6M},"
221 			 "{Intel, ICH7},"
222 			 "{Intel, ESB2},"
223 			 "{Intel, ICH8},"
224 			 "{Intel, ICH9},"
225 			 "{Intel, ICH10},"
226 			 "{Intel, PCH},"
227 			 "{Intel, CPT},"
228 			 "{Intel, PPT},"
229 			 "{Intel, LPT},"
230 			 "{Intel, LPT_LP},"
231 			 "{Intel, WPT_LP},"
232 			 "{Intel, SPT},"
233 			 "{Intel, SPT_LP},"
234 			 "{Intel, HPT},"
235 			 "{Intel, PBG},"
236 			 "{Intel, SCH},"
237 			 "{ATI, SB450},"
238 			 "{ATI, SB600},"
239 			 "{ATI, RS600},"
240 			 "{ATI, RS690},"
241 			 "{ATI, RS780},"
242 			 "{ATI, R600},"
243 			 "{ATI, RV630},"
244 			 "{ATI, RV610},"
245 			 "{ATI, RV670},"
246 			 "{ATI, RV635},"
247 			 "{ATI, RV620},"
248 			 "{ATI, RV770},"
249 			 "{VIA, VT8251},"
250 			 "{VIA, VT8237A},"
251 			 "{SiS, SIS966},"
252 			 "{ULI, M5461}}");
253 MODULE_DESCRIPTION("Intel HDA driver");
254 
255 #if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
256 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
257 #define SUPPORT_VGA_SWITCHEROO
258 #endif
259 #endif
260 
261 
262 /*
263  */
264 
265 /* driver types */
266 enum {
267 	AZX_DRIVER_ICH,
268 	AZX_DRIVER_PCH,
269 	AZX_DRIVER_SCH,
270 	AZX_DRIVER_SKL,
271 	AZX_DRIVER_HDMI,
272 	AZX_DRIVER_ATI,
273 	AZX_DRIVER_ATIHDMI,
274 	AZX_DRIVER_ATIHDMI_NS,
275 	AZX_DRIVER_VIA,
276 	AZX_DRIVER_SIS,
277 	AZX_DRIVER_ULI,
278 	AZX_DRIVER_NVIDIA,
279 	AZX_DRIVER_TERA,
280 	AZX_DRIVER_CTX,
281 	AZX_DRIVER_CTHDA,
282 	AZX_DRIVER_CMEDIA,
283 	AZX_DRIVER_GENERIC,
284 	AZX_NUM_DRIVERS, /* keep this as last entry */
285 };
286 
287 #define azx_get_snoop_type(chip) \
288 	(((chip)->driver_caps & AZX_DCAPS_SNOOP_MASK) >> 10)
289 #define AZX_DCAPS_SNOOP_TYPE(type) ((AZX_SNOOP_TYPE_ ## type) << 10)
290 
291 /* quirks for old Intel chipsets */
292 #define AZX_DCAPS_INTEL_ICH \
293 	(AZX_DCAPS_OLD_SSYNC | AZX_DCAPS_NO_ALIGN_BUFSIZE)
294 
295 /* quirks for Intel PCH */
296 #define AZX_DCAPS_INTEL_PCH_BASE \
297 	(AZX_DCAPS_NO_ALIGN_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
298 	 AZX_DCAPS_SNOOP_TYPE(SCH))
299 
300 /* PCH up to IVB; no runtime PM; bind with i915 gfx */
301 #define AZX_DCAPS_INTEL_PCH_NOPM \
302 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
303 
304 /* PCH for HSW/BDW; with runtime PM */
305 /* no i915 binding for this as HSW/BDW has another controller for HDMI */
306 #define AZX_DCAPS_INTEL_PCH \
307 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME)
308 
309 /* HSW HDMI */
310 #define AZX_DCAPS_INTEL_HASWELL \
311 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_COUNT_LPIB_DELAY |\
312 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
313 	 AZX_DCAPS_SNOOP_TYPE(SCH))
314 
315 /* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
316 #define AZX_DCAPS_INTEL_BROADWELL \
317 	(/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_POSFIX_LPIB |\
318 	 AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
319 	 AZX_DCAPS_SNOOP_TYPE(SCH))
320 
321 #define AZX_DCAPS_INTEL_BAYTRAIL \
322 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
323 
324 #define AZX_DCAPS_INTEL_BRASWELL \
325 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
326 	 AZX_DCAPS_I915_COMPONENT)
327 
328 #define AZX_DCAPS_INTEL_SKYLAKE \
329 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
330 	 AZX_DCAPS_SEPARATE_STREAM_TAG | AZX_DCAPS_I915_COMPONENT)
331 
332 #define AZX_DCAPS_INTEL_BROXTON \
333 	(AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
334 	 AZX_DCAPS_SEPARATE_STREAM_TAG | AZX_DCAPS_I915_COMPONENT)
335 
336 /* quirks for ATI SB / AMD Hudson */
337 #define AZX_DCAPS_PRESET_ATI_SB \
338 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB |\
339 	 AZX_DCAPS_SNOOP_TYPE(ATI))
340 
341 /* quirks for ATI/AMD HDMI */
342 #define AZX_DCAPS_PRESET_ATI_HDMI \
343 	(AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB|\
344 	 AZX_DCAPS_NO_MSI64)
345 
346 /* quirks for ATI HDMI with snoop off */
347 #define AZX_DCAPS_PRESET_ATI_HDMI_NS \
348 	(AZX_DCAPS_PRESET_ATI_HDMI | AZX_DCAPS_SNOOP_OFF)
349 
350 /* quirks for Nvidia */
351 #define AZX_DCAPS_PRESET_NVIDIA \
352 	(AZX_DCAPS_NO_MSI | AZX_DCAPS_CORBRP_SELF_CLEAR |\
353 	 AZX_DCAPS_SNOOP_TYPE(NVIDIA))
354 
355 #define AZX_DCAPS_PRESET_CTHDA \
356 	(AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB |\
357 	 AZX_DCAPS_NO_64BIT |\
358 	 AZX_DCAPS_4K_BDLE_BOUNDARY | AZX_DCAPS_SNOOP_OFF)
359 
360 /*
361  * vga_switcheroo support
362  */
363 #ifdef SUPPORT_VGA_SWITCHEROO
364 #define use_vga_switcheroo(chip)	((chip)->use_vga_switcheroo)
365 #define needs_eld_notify_link(chip)	((chip)->need_eld_notify_link)
366 #else
367 #define use_vga_switcheroo(chip)	0
368 #define needs_eld_notify_link(chip)	false
369 #endif
370 
371 #define CONTROLLER_IN_GPU(pci) (((pci)->device == 0x0a0c) || \
372 					((pci)->device == 0x0c0c) || \
373 					((pci)->device == 0x0d0c) || \
374 					((pci)->device == 0x160c))
375 
376 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
377 #define IS_CFL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa348)
378 
379 static char *driver_short_names[] = {
380 	[AZX_DRIVER_ICH] = "HDA Intel",
381 	[AZX_DRIVER_PCH] = "HDA Intel PCH",
382 	[AZX_DRIVER_SCH] = "HDA Intel MID",
383 	[AZX_DRIVER_SKL] = "HDA Intel PCH", /* kept old name for compatibility */
384 	[AZX_DRIVER_HDMI] = "HDA Intel HDMI",
385 	[AZX_DRIVER_ATI] = "HDA ATI SB",
386 	[AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
387 	[AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
388 	[AZX_DRIVER_VIA] = "HDA VIA VT82xx",
389 	[AZX_DRIVER_SIS] = "HDA SIS966",
390 	[AZX_DRIVER_ULI] = "HDA ULI M5461",
391 	[AZX_DRIVER_NVIDIA] = "HDA NVidia",
392 	[AZX_DRIVER_TERA] = "HDA Teradici",
393 	[AZX_DRIVER_CTX] = "HDA Creative",
394 	[AZX_DRIVER_CTHDA] = "HDA Creative",
395 	[AZX_DRIVER_CMEDIA] = "HDA C-Media",
396 	[AZX_DRIVER_GENERIC] = "HD-Audio Generic",
397 };
398 
399 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
400 static void set_default_power_save(struct azx *chip);
401 
402 /*
403  * initialize the PCI registers
404  */
405 /* update bits in a PCI register byte */
406 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
407 			    unsigned char mask, unsigned char val)
408 {
409 	unsigned char data;
410 
411 	pci_read_config_byte(pci, reg, &data);
412 	data &= ~mask;
413 	data |= (val & mask);
414 	pci_write_config_byte(pci, reg, data);
415 }
416 
417 static void azx_init_pci(struct azx *chip)
418 {
419 	int snoop_type = azx_get_snoop_type(chip);
420 
421 	/* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
422 	 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
423 	 * Ensuring these bits are 0 clears playback static on some HD Audio
424 	 * codecs.
425 	 * The PCI register TCSEL is defined in the Intel manuals.
426 	 */
427 	if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
428 		dev_dbg(chip->card->dev, "Clearing TCSEL\n");
429 		update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
430 	}
431 
432 	/* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
433 	 * we need to enable snoop.
434 	 */
435 	if (snoop_type == AZX_SNOOP_TYPE_ATI) {
436 		dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
437 			azx_snoop(chip));
438 		update_pci_byte(chip->pci,
439 				ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
440 				azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
441 	}
442 
443 	/* For NVIDIA HDA, enable snoop */
444 	if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
445 		dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
446 			azx_snoop(chip));
447 		update_pci_byte(chip->pci,
448 				NVIDIA_HDA_TRANSREG_ADDR,
449 				0x0f, NVIDIA_HDA_ENABLE_COHBITS);
450 		update_pci_byte(chip->pci,
451 				NVIDIA_HDA_ISTRM_COH,
452 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
453 		update_pci_byte(chip->pci,
454 				NVIDIA_HDA_OSTRM_COH,
455 				0x01, NVIDIA_HDA_ENABLE_COHBIT);
456 	}
457 
458 	/* Enable SCH/PCH snoop if needed */
459 	if (snoop_type == AZX_SNOOP_TYPE_SCH) {
460 		unsigned short snoop;
461 		pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
462 		if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
463 		    (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
464 			snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
465 			if (!azx_snoop(chip))
466 				snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
467 			pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
468 			pci_read_config_word(chip->pci,
469 				INTEL_SCH_HDA_DEVC, &snoop);
470 		}
471 		dev_dbg(chip->card->dev, "SCH snoop: %s\n",
472 			(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
473 			"Disabled" : "Enabled");
474         }
475 }
476 
477 /*
478  * In BXT-P A0, HD-Audio DMA requests is later than expected,
479  * and makes an audio stream sensitive to system latencies when
480  * 24/32 bits are playing.
481  * Adjusting threshold of DMA fifo to force the DMA request
482  * sooner to improve latency tolerance at the expense of power.
483  */
484 static void bxt_reduce_dma_latency(struct azx *chip)
485 {
486 	u32 val;
487 
488 	val = azx_readl(chip, VS_EM4L);
489 	val &= (0x3 << 20);
490 	azx_writel(chip, VS_EM4L, val);
491 }
492 
493 /*
494  * ML_LCAP bits:
495  *  bit 0: 6 MHz Supported
496  *  bit 1: 12 MHz Supported
497  *  bit 2: 24 MHz Supported
498  *  bit 3: 48 MHz Supported
499  *  bit 4: 96 MHz Supported
500  *  bit 5: 192 MHz Supported
501  */
502 static int intel_get_lctl_scf(struct azx *chip)
503 {
504 	struct hdac_bus *bus = azx_bus(chip);
505 	static int preferred_bits[] = { 2, 3, 1, 4, 5 };
506 	u32 val, t;
507 	int i;
508 
509 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCAP);
510 
511 	for (i = 0; i < ARRAY_SIZE(preferred_bits); i++) {
512 		t = preferred_bits[i];
513 		if (val & (1 << t))
514 			return t;
515 	}
516 
517 	dev_warn(chip->card->dev, "set audio clock frequency to 6MHz");
518 	return 0;
519 }
520 
521 static int intel_ml_lctl_set_power(struct azx *chip, int state)
522 {
523 	struct hdac_bus *bus = azx_bus(chip);
524 	u32 val;
525 	int timeout;
526 
527 	/*
528 	 * the codecs are sharing the first link setting by default
529 	 * If other links are enabled for stream, they need similar fix
530 	 */
531 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
532 	val &= ~AZX_MLCTL_SPA;
533 	val |= state << AZX_MLCTL_SPA_SHIFT;
534 	writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
535 	/* wait for CPA */
536 	timeout = 50;
537 	while (timeout) {
538 		if (((readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL)) &
539 		    AZX_MLCTL_CPA) == (state << AZX_MLCTL_CPA_SHIFT))
540 			return 0;
541 		timeout--;
542 		udelay(10);
543 	}
544 
545 	return -1;
546 }
547 
548 static void intel_init_lctl(struct azx *chip)
549 {
550 	struct hdac_bus *bus = azx_bus(chip);
551 	u32 val;
552 	int ret;
553 
554 	/* 0. check lctl register value is correct or not */
555 	val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
556 	/* if SCF is already set, let's use it */
557 	if ((val & ML_LCTL_SCF_MASK) != 0)
558 		return;
559 
560 	/*
561 	 * Before operating on SPA, CPA must match SPA.
562 	 * Any deviation may result in undefined behavior.
563 	 */
564 	if (((val & AZX_MLCTL_SPA) >> AZX_MLCTL_SPA_SHIFT) !=
565 		((val & AZX_MLCTL_CPA) >> AZX_MLCTL_CPA_SHIFT))
566 		return;
567 
568 	/* 1. turn link down: set SPA to 0 and wait CPA to 0 */
569 	ret = intel_ml_lctl_set_power(chip, 0);
570 	udelay(100);
571 	if (ret)
572 		goto set_spa;
573 
574 	/* 2. update SCF to select a properly audio clock*/
575 	val &= ~ML_LCTL_SCF_MASK;
576 	val |= intel_get_lctl_scf(chip);
577 	writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
578 
579 set_spa:
580 	/* 4. turn link up: set SPA to 1 and wait CPA to 1 */
581 	intel_ml_lctl_set_power(chip, 1);
582 	udelay(100);
583 }
584 
585 static void hda_intel_init_chip(struct azx *chip, bool full_reset)
586 {
587 	struct hdac_bus *bus = azx_bus(chip);
588 	struct pci_dev *pci = chip->pci;
589 	u32 val;
590 
591 	snd_hdac_set_codec_wakeup(bus, true);
592 	if (chip->driver_type == AZX_DRIVER_SKL) {
593 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
594 		val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
595 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
596 	}
597 	azx_init_chip(chip, full_reset);
598 	if (chip->driver_type == AZX_DRIVER_SKL) {
599 		pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
600 		val = val | INTEL_HDA_CGCTL_MISCBDCGE;
601 		pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
602 	}
603 
604 	snd_hdac_set_codec_wakeup(bus, false);
605 
606 	/* reduce dma latency to avoid noise */
607 	if (IS_BXT(pci))
608 		bxt_reduce_dma_latency(chip);
609 
610 	if (bus->mlcap != NULL)
611 		intel_init_lctl(chip);
612 }
613 
614 /* calculate runtime delay from LPIB */
615 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
616 				   unsigned int pos)
617 {
618 	struct snd_pcm_substream *substream = azx_dev->core.substream;
619 	int stream = substream->stream;
620 	unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
621 	int delay;
622 
623 	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
624 		delay = pos - lpib_pos;
625 	else
626 		delay = lpib_pos - pos;
627 	if (delay < 0) {
628 		if (delay >= azx_dev->core.delay_negative_threshold)
629 			delay = 0;
630 		else
631 			delay += azx_dev->core.bufsize;
632 	}
633 
634 	if (delay >= azx_dev->core.period_bytes) {
635 		dev_info(chip->card->dev,
636 			 "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
637 			 delay, azx_dev->core.period_bytes);
638 		delay = 0;
639 		chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
640 		chip->get_delay[stream] = NULL;
641 	}
642 
643 	return bytes_to_frames(substream->runtime, delay);
644 }
645 
646 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
647 
648 /* called from IRQ */
649 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
650 {
651 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
652 	int ok;
653 
654 	ok = azx_position_ok(chip, azx_dev);
655 	if (ok == 1) {
656 		azx_dev->irq_pending = 0;
657 		return ok;
658 	} else if (ok == 0) {
659 		/* bogus IRQ, process it later */
660 		azx_dev->irq_pending = 1;
661 		schedule_work(&hda->irq_pending_work);
662 	}
663 	return 0;
664 }
665 
666 #define display_power(chip, enable) \
667 	snd_hdac_display_power(azx_bus(chip), HDA_CODEC_IDX_CONTROLLER, enable)
668 
669 /*
670  * Check whether the current DMA position is acceptable for updating
671  * periods.  Returns non-zero if it's OK.
672  *
673  * Many HD-audio controllers appear pretty inaccurate about
674  * the update-IRQ timing.  The IRQ is issued before actually the
675  * data is processed.  So, we need to process it afterwords in a
676  * workqueue.
677  */
678 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
679 {
680 	struct snd_pcm_substream *substream = azx_dev->core.substream;
681 	int stream = substream->stream;
682 	u32 wallclk;
683 	unsigned int pos;
684 
685 	wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
686 	if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
687 		return -1;	/* bogus (too early) interrupt */
688 
689 	if (chip->get_position[stream])
690 		pos = chip->get_position[stream](chip, azx_dev);
691 	else { /* use the position buffer as default */
692 		pos = azx_get_pos_posbuf(chip, azx_dev);
693 		if (!pos || pos == (u32)-1) {
694 			dev_info(chip->card->dev,
695 				 "Invalid position buffer, using LPIB read method instead.\n");
696 			chip->get_position[stream] = azx_get_pos_lpib;
697 			if (chip->get_position[0] == azx_get_pos_lpib &&
698 			    chip->get_position[1] == azx_get_pos_lpib)
699 				azx_bus(chip)->use_posbuf = false;
700 			pos = azx_get_pos_lpib(chip, azx_dev);
701 			chip->get_delay[stream] = NULL;
702 		} else {
703 			chip->get_position[stream] = azx_get_pos_posbuf;
704 			if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
705 				chip->get_delay[stream] = azx_get_delay_from_lpib;
706 		}
707 	}
708 
709 	if (pos >= azx_dev->core.bufsize)
710 		pos = 0;
711 
712 	if (WARN_ONCE(!azx_dev->core.period_bytes,
713 		      "hda-intel: zero azx_dev->period_bytes"))
714 		return -1; /* this shouldn't happen! */
715 	if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
716 	    pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
717 		/* NG - it's below the first next period boundary */
718 		return chip->bdl_pos_adj ? 0 : -1;
719 	azx_dev->core.start_wallclk += wallclk;
720 	return 1; /* OK, it's fine */
721 }
722 
723 /*
724  * The work for pending PCM period updates.
725  */
726 static void azx_irq_pending_work(struct work_struct *work)
727 {
728 	struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
729 	struct azx *chip = &hda->chip;
730 	struct hdac_bus *bus = azx_bus(chip);
731 	struct hdac_stream *s;
732 	int pending, ok;
733 
734 	if (!hda->irq_pending_warned) {
735 		dev_info(chip->card->dev,
736 			 "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
737 			 chip->card->number);
738 		hda->irq_pending_warned = 1;
739 	}
740 
741 	for (;;) {
742 		pending = 0;
743 		spin_lock_irq(&bus->reg_lock);
744 		list_for_each_entry(s, &bus->stream_list, list) {
745 			struct azx_dev *azx_dev = stream_to_azx_dev(s);
746 			if (!azx_dev->irq_pending ||
747 			    !s->substream ||
748 			    !s->running)
749 				continue;
750 			ok = azx_position_ok(chip, azx_dev);
751 			if (ok > 0) {
752 				azx_dev->irq_pending = 0;
753 				spin_unlock(&bus->reg_lock);
754 				snd_pcm_period_elapsed(s->substream);
755 				spin_lock(&bus->reg_lock);
756 			} else if (ok < 0) {
757 				pending = 0;	/* too early */
758 			} else
759 				pending++;
760 		}
761 		spin_unlock_irq(&bus->reg_lock);
762 		if (!pending)
763 			return;
764 		msleep(1);
765 	}
766 }
767 
768 /* clear irq_pending flags and assure no on-going workq */
769 static void azx_clear_irq_pending(struct azx *chip)
770 {
771 	struct hdac_bus *bus = azx_bus(chip);
772 	struct hdac_stream *s;
773 
774 	spin_lock_irq(&bus->reg_lock);
775 	list_for_each_entry(s, &bus->stream_list, list) {
776 		struct azx_dev *azx_dev = stream_to_azx_dev(s);
777 		azx_dev->irq_pending = 0;
778 	}
779 	spin_unlock_irq(&bus->reg_lock);
780 }
781 
782 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
783 {
784 	struct hdac_bus *bus = azx_bus(chip);
785 
786 	if (request_irq(chip->pci->irq, azx_interrupt,
787 			chip->msi ? 0 : IRQF_SHARED,
788 			chip->card->irq_descr, chip)) {
789 		dev_err(chip->card->dev,
790 			"unable to grab IRQ %d, disabling device\n",
791 			chip->pci->irq);
792 		if (do_disconnect)
793 			snd_card_disconnect(chip->card);
794 		return -1;
795 	}
796 	bus->irq = chip->pci->irq;
797 	pci_intx(chip->pci, !chip->msi);
798 	return 0;
799 }
800 
801 /* get the current DMA position with correction on VIA chips */
802 static unsigned int azx_via_get_position(struct azx *chip,
803 					 struct azx_dev *azx_dev)
804 {
805 	unsigned int link_pos, mini_pos, bound_pos;
806 	unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
807 	unsigned int fifo_size;
808 
809 	link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
810 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
811 		/* Playback, no problem using link position */
812 		return link_pos;
813 	}
814 
815 	/* Capture */
816 	/* For new chipset,
817 	 * use mod to get the DMA position just like old chipset
818 	 */
819 	mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
820 	mod_dma_pos %= azx_dev->core.period_bytes;
821 
822 	/* azx_dev->fifo_size can't get FIFO size of in stream.
823 	 * Get from base address + offset.
824 	 */
825 	fifo_size = readw(azx_bus(chip)->remap_addr +
826 			  VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
827 
828 	if (azx_dev->insufficient) {
829 		/* Link position never gather than FIFO size */
830 		if (link_pos <= fifo_size)
831 			return 0;
832 
833 		azx_dev->insufficient = 0;
834 	}
835 
836 	if (link_pos <= fifo_size)
837 		mini_pos = azx_dev->core.bufsize + link_pos - fifo_size;
838 	else
839 		mini_pos = link_pos - fifo_size;
840 
841 	/* Find nearest previous boudary */
842 	mod_mini_pos = mini_pos % azx_dev->core.period_bytes;
843 	mod_link_pos = link_pos % azx_dev->core.period_bytes;
844 	if (mod_link_pos >= fifo_size)
845 		bound_pos = link_pos - mod_link_pos;
846 	else if (mod_dma_pos >= mod_mini_pos)
847 		bound_pos = mini_pos - mod_mini_pos;
848 	else {
849 		bound_pos = mini_pos - mod_mini_pos + azx_dev->core.period_bytes;
850 		if (bound_pos >= azx_dev->core.bufsize)
851 			bound_pos = 0;
852 	}
853 
854 	/* Calculate real DMA position we want */
855 	return bound_pos + mod_dma_pos;
856 }
857 
858 static unsigned int azx_skl_get_dpib_pos(struct azx *chip,
859 					 struct azx_dev *azx_dev)
860 {
861 	return _snd_hdac_chip_readl(azx_bus(chip),
862 				    AZX_REG_VS_SDXDPIB_XBASE +
863 				    (AZX_REG_VS_SDXDPIB_XINTERVAL *
864 				     azx_dev->core.index));
865 }
866 
867 /* get the current DMA position with correction on SKL+ chips */
868 static unsigned int azx_get_pos_skl(struct azx *chip, struct azx_dev *azx_dev)
869 {
870 	/* DPIB register gives a more accurate position for playback */
871 	if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
872 		return azx_skl_get_dpib_pos(chip, azx_dev);
873 
874 	/* For capture, we need to read posbuf, but it requires a delay
875 	 * for the possible boundary overlap; the read of DPIB fetches the
876 	 * actual posbuf
877 	 */
878 	udelay(20);
879 	azx_skl_get_dpib_pos(chip, azx_dev);
880 	return azx_get_pos_posbuf(chip, azx_dev);
881 }
882 
883 #ifdef CONFIG_PM
884 static DEFINE_MUTEX(card_list_lock);
885 static LIST_HEAD(card_list);
886 
887 static void azx_add_card_list(struct azx *chip)
888 {
889 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
890 	mutex_lock(&card_list_lock);
891 	list_add(&hda->list, &card_list);
892 	mutex_unlock(&card_list_lock);
893 }
894 
895 static void azx_del_card_list(struct azx *chip)
896 {
897 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
898 	mutex_lock(&card_list_lock);
899 	list_del_init(&hda->list);
900 	mutex_unlock(&card_list_lock);
901 }
902 
903 /* trigger power-save check at writing parameter */
904 static int param_set_xint(const char *val, const struct kernel_param *kp)
905 {
906 	struct hda_intel *hda;
907 	struct azx *chip;
908 	int prev = power_save;
909 	int ret = param_set_int(val, kp);
910 
911 	if (ret || prev == power_save)
912 		return ret;
913 
914 	mutex_lock(&card_list_lock);
915 	list_for_each_entry(hda, &card_list, list) {
916 		chip = &hda->chip;
917 		if (!hda->probe_continued || chip->disabled)
918 			continue;
919 		snd_hda_set_power_save(&chip->bus, power_save * 1000);
920 	}
921 	mutex_unlock(&card_list_lock);
922 	return 0;
923 }
924 
925 /*
926  * power management
927  */
928 static bool azx_is_pm_ready(struct snd_card *card)
929 {
930 	struct azx *chip;
931 	struct hda_intel *hda;
932 
933 	if (!card)
934 		return false;
935 	chip = card->private_data;
936 	hda = container_of(chip, struct hda_intel, chip);
937 	if (chip->disabled || hda->init_failed || !chip->running)
938 		return false;
939 	return true;
940 }
941 
942 static void __azx_runtime_suspend(struct azx *chip)
943 {
944 	azx_stop_chip(chip);
945 	azx_enter_link_reset(chip);
946 	azx_clear_irq_pending(chip);
947 	display_power(chip, false);
948 }
949 
950 static void __azx_runtime_resume(struct azx *chip)
951 {
952 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
953 	struct hdac_bus *bus = azx_bus(chip);
954 	struct hda_codec *codec;
955 	int status;
956 
957 	display_power(chip, true);
958 	if (hda->need_i915_power)
959 		snd_hdac_i915_set_bclk(bus);
960 
961 	/* Read STATESTS before controller reset */
962 	status = azx_readw(chip, STATESTS);
963 
964 	azx_init_pci(chip);
965 	hda_intel_init_chip(chip, true);
966 
967 	if (status) {
968 		list_for_each_codec(codec, &chip->bus)
969 			if (status & (1 << codec->addr))
970 				schedule_delayed_work(&codec->jackpoll_work,
971 						      codec->jackpoll_interval);
972 	}
973 
974 	/* power down again for link-controlled chips */
975 	if (!hda->need_i915_power)
976 		display_power(chip, false);
977 }
978 
979 #ifdef CONFIG_PM_SLEEP
980 static int azx_suspend(struct device *dev)
981 {
982 	struct snd_card *card = dev_get_drvdata(dev);
983 	struct azx *chip;
984 	struct hdac_bus *bus;
985 
986 	if (!azx_is_pm_ready(card))
987 		return 0;
988 
989 	chip = card->private_data;
990 	bus = azx_bus(chip);
991 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
992 	__azx_runtime_suspend(chip);
993 	if (bus->irq >= 0) {
994 		free_irq(bus->irq, chip);
995 		bus->irq = -1;
996 	}
997 
998 	if (chip->msi)
999 		pci_disable_msi(chip->pci);
1000 
1001 	trace_azx_suspend(chip);
1002 	return 0;
1003 }
1004 
1005 static int azx_resume(struct device *dev)
1006 {
1007 	struct snd_card *card = dev_get_drvdata(dev);
1008 	struct azx *chip;
1009 
1010 	if (!azx_is_pm_ready(card))
1011 		return 0;
1012 
1013 	chip = card->private_data;
1014 	if (chip->msi)
1015 		if (pci_enable_msi(chip->pci) < 0)
1016 			chip->msi = 0;
1017 	if (azx_acquire_irq(chip, 1) < 0)
1018 		return -EIO;
1019 	__azx_runtime_resume(chip);
1020 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1021 
1022 	trace_azx_resume(chip);
1023 	return 0;
1024 }
1025 
1026 /* put codec down to D3 at hibernation for Intel SKL+;
1027  * otherwise BIOS may still access the codec and screw up the driver
1028  */
1029 static int azx_freeze_noirq(struct device *dev)
1030 {
1031 	struct snd_card *card = dev_get_drvdata(dev);
1032 	struct azx *chip = card->private_data;
1033 	struct pci_dev *pci = to_pci_dev(dev);
1034 
1035 	if (chip->driver_type == AZX_DRIVER_SKL)
1036 		pci_set_power_state(pci, PCI_D3hot);
1037 
1038 	return 0;
1039 }
1040 
1041 static int azx_thaw_noirq(struct device *dev)
1042 {
1043 	struct snd_card *card = dev_get_drvdata(dev);
1044 	struct azx *chip = card->private_data;
1045 	struct pci_dev *pci = to_pci_dev(dev);
1046 
1047 	if (chip->driver_type == AZX_DRIVER_SKL)
1048 		pci_set_power_state(pci, PCI_D0);
1049 
1050 	return 0;
1051 }
1052 #endif /* CONFIG_PM_SLEEP */
1053 
1054 static int azx_runtime_suspend(struct device *dev)
1055 {
1056 	struct snd_card *card = dev_get_drvdata(dev);
1057 	struct azx *chip;
1058 
1059 	if (!azx_is_pm_ready(card))
1060 		return 0;
1061 	chip = card->private_data;
1062 	if (!azx_has_pm_runtime(chip))
1063 		return 0;
1064 
1065 	/* enable controller wake up event */
1066 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
1067 		  STATESTS_INT_MASK);
1068 
1069 	__azx_runtime_suspend(chip);
1070 	trace_azx_runtime_suspend(chip);
1071 	return 0;
1072 }
1073 
1074 static int azx_runtime_resume(struct device *dev)
1075 {
1076 	struct snd_card *card = dev_get_drvdata(dev);
1077 	struct azx *chip;
1078 
1079 	if (!azx_is_pm_ready(card))
1080 		return 0;
1081 	chip = card->private_data;
1082 	if (!azx_has_pm_runtime(chip))
1083 		return 0;
1084 	__azx_runtime_resume(chip);
1085 
1086 	/* disable controller Wake Up event*/
1087 	azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
1088 			~STATESTS_INT_MASK);
1089 
1090 	trace_azx_runtime_resume(chip);
1091 	return 0;
1092 }
1093 
1094 static int azx_runtime_idle(struct device *dev)
1095 {
1096 	struct snd_card *card = dev_get_drvdata(dev);
1097 	struct azx *chip;
1098 	struct hda_intel *hda;
1099 
1100 	if (!card)
1101 		return 0;
1102 
1103 	chip = card->private_data;
1104 	hda = container_of(chip, struct hda_intel, chip);
1105 	if (chip->disabled || hda->init_failed)
1106 		return 0;
1107 
1108 	if (!power_save_controller || !azx_has_pm_runtime(chip) ||
1109 	    azx_bus(chip)->codec_powered || !chip->running)
1110 		return -EBUSY;
1111 
1112 	/* ELD notification gets broken when HD-audio bus is off */
1113 	if (needs_eld_notify_link(hda))
1114 		return -EBUSY;
1115 
1116 	return 0;
1117 }
1118 
1119 static const struct dev_pm_ops azx_pm = {
1120 	SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
1121 #ifdef CONFIG_PM_SLEEP
1122 	.freeze_noirq = azx_freeze_noirq,
1123 	.thaw_noirq = azx_thaw_noirq,
1124 #endif
1125 	SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
1126 };
1127 
1128 #define AZX_PM_OPS	&azx_pm
1129 #else
1130 #define azx_add_card_list(chip) /* NOP */
1131 #define azx_del_card_list(chip) /* NOP */
1132 #define AZX_PM_OPS	NULL
1133 #endif /* CONFIG_PM */
1134 
1135 
1136 static int azx_probe_continue(struct azx *chip);
1137 
1138 #ifdef SUPPORT_VGA_SWITCHEROO
1139 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
1140 
1141 static void azx_vs_set_state(struct pci_dev *pci,
1142 			     enum vga_switcheroo_state state)
1143 {
1144 	struct snd_card *card = pci_get_drvdata(pci);
1145 	struct azx *chip = card->private_data;
1146 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1147 	struct hda_codec *codec;
1148 	bool disabled;
1149 
1150 	wait_for_completion(&hda->probe_wait);
1151 	if (hda->init_failed)
1152 		return;
1153 
1154 	disabled = (state == VGA_SWITCHEROO_OFF);
1155 	if (chip->disabled == disabled)
1156 		return;
1157 
1158 	if (!hda->probe_continued) {
1159 		chip->disabled = disabled;
1160 		if (!disabled) {
1161 			dev_info(chip->card->dev,
1162 				 "Start delayed initialization\n");
1163 			if (azx_probe_continue(chip) < 0) {
1164 				dev_err(chip->card->dev, "initialization error\n");
1165 				hda->init_failed = true;
1166 			}
1167 		}
1168 	} else {
1169 		dev_info(chip->card->dev, "%s via vga_switcheroo\n",
1170 			 disabled ? "Disabling" : "Enabling");
1171 		if (disabled) {
1172 			list_for_each_codec(codec, &chip->bus) {
1173 				pm_runtime_suspend(hda_codec_dev(codec));
1174 				pm_runtime_disable(hda_codec_dev(codec));
1175 			}
1176 			pm_runtime_suspend(card->dev);
1177 			pm_runtime_disable(card->dev);
1178 			/* when we get suspended by vga_switcheroo we end up in D3cold,
1179 			 * however we have no ACPI handle, so pci/acpi can't put us there,
1180 			 * put ourselves there */
1181 			pci->current_state = PCI_D3cold;
1182 			chip->disabled = true;
1183 			if (snd_hda_lock_devices(&chip->bus))
1184 				dev_warn(chip->card->dev,
1185 					 "Cannot lock devices!\n");
1186 		} else {
1187 			snd_hda_unlock_devices(&chip->bus);
1188 			chip->disabled = false;
1189 			pm_runtime_enable(card->dev);
1190 			list_for_each_codec(codec, &chip->bus) {
1191 				pm_runtime_enable(hda_codec_dev(codec));
1192 				pm_runtime_resume(hda_codec_dev(codec));
1193 			}
1194 		}
1195 	}
1196 }
1197 
1198 static bool azx_vs_can_switch(struct pci_dev *pci)
1199 {
1200 	struct snd_card *card = pci_get_drvdata(pci);
1201 	struct azx *chip = card->private_data;
1202 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1203 
1204 	wait_for_completion(&hda->probe_wait);
1205 	if (hda->init_failed)
1206 		return false;
1207 	if (chip->disabled || !hda->probe_continued)
1208 		return true;
1209 	if (snd_hda_lock_devices(&chip->bus))
1210 		return false;
1211 	snd_hda_unlock_devices(&chip->bus);
1212 	return true;
1213 }
1214 
1215 /*
1216  * The discrete GPU cannot power down unless the HDA controller runtime
1217  * suspends, so activate runtime PM on codecs even if power_save == 0.
1218  */
1219 static void setup_vga_switcheroo_runtime_pm(struct azx *chip)
1220 {
1221 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1222 	struct hda_codec *codec;
1223 
1224 	if (hda->use_vga_switcheroo && !hda->need_eld_notify_link) {
1225 		list_for_each_codec(codec, &chip->bus)
1226 			codec->auto_runtime_pm = 1;
1227 		/* reset the power save setup */
1228 		if (chip->running)
1229 			set_default_power_save(chip);
1230 	}
1231 }
1232 
1233 static void azx_vs_gpu_bound(struct pci_dev *pci,
1234 			     enum vga_switcheroo_client_id client_id)
1235 {
1236 	struct snd_card *card = pci_get_drvdata(pci);
1237 	struct azx *chip = card->private_data;
1238 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1239 
1240 	if (client_id == VGA_SWITCHEROO_DIS)
1241 		hda->need_eld_notify_link = 0;
1242 	setup_vga_switcheroo_runtime_pm(chip);
1243 }
1244 
1245 static void init_vga_switcheroo(struct azx *chip)
1246 {
1247 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1248 	struct pci_dev *p = get_bound_vga(chip->pci);
1249 	if (p) {
1250 		dev_info(chip->card->dev,
1251 			 "Handle vga_switcheroo audio client\n");
1252 		hda->use_vga_switcheroo = 1;
1253 		hda->need_eld_notify_link = 1; /* cleared in gpu_bound op */
1254 		chip->driver_caps |= AZX_DCAPS_PM_RUNTIME;
1255 		pci_dev_put(p);
1256 	}
1257 }
1258 
1259 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1260 	.set_gpu_state = azx_vs_set_state,
1261 	.can_switch = azx_vs_can_switch,
1262 	.gpu_bound = azx_vs_gpu_bound,
1263 };
1264 
1265 static int register_vga_switcheroo(struct azx *chip)
1266 {
1267 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1268 	struct pci_dev *p;
1269 	int err;
1270 
1271 	if (!hda->use_vga_switcheroo)
1272 		return 0;
1273 
1274 	p = get_bound_vga(chip->pci);
1275 	err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops, p);
1276 	pci_dev_put(p);
1277 
1278 	if (err < 0)
1279 		return err;
1280 	hda->vga_switcheroo_registered = 1;
1281 
1282 	return 0;
1283 }
1284 #else
1285 #define init_vga_switcheroo(chip)		/* NOP */
1286 #define register_vga_switcheroo(chip)		0
1287 #define check_hdmi_disabled(pci)	false
1288 #define setup_vga_switcheroo_runtime_pm(chip)	/* NOP */
1289 #endif /* SUPPORT_VGA_SWITCHER */
1290 
1291 /*
1292  * destructor
1293  */
1294 static int azx_free(struct azx *chip)
1295 {
1296 	struct pci_dev *pci = chip->pci;
1297 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1298 	struct hdac_bus *bus = azx_bus(chip);
1299 
1300 	if (azx_has_pm_runtime(chip) && chip->running)
1301 		pm_runtime_get_noresume(&pci->dev);
1302 	chip->running = 0;
1303 
1304 	azx_del_card_list(chip);
1305 
1306 	hda->init_failed = 1; /* to be sure */
1307 	complete_all(&hda->probe_wait);
1308 
1309 	if (use_vga_switcheroo(hda)) {
1310 		if (chip->disabled && hda->probe_continued)
1311 			snd_hda_unlock_devices(&chip->bus);
1312 		if (hda->vga_switcheroo_registered)
1313 			vga_switcheroo_unregister_client(chip->pci);
1314 	}
1315 
1316 	if (bus->chip_init) {
1317 		azx_clear_irq_pending(chip);
1318 		azx_stop_all_streams(chip);
1319 		azx_stop_chip(chip);
1320 	}
1321 
1322 	if (bus->irq >= 0)
1323 		free_irq(bus->irq, (void*)chip);
1324 	if (chip->msi)
1325 		pci_disable_msi(chip->pci);
1326 	iounmap(bus->remap_addr);
1327 
1328 	azx_free_stream_pages(chip);
1329 	azx_free_streams(chip);
1330 	snd_hdac_bus_exit(bus);
1331 
1332 	if (chip->region_requested)
1333 		pci_release_regions(chip->pci);
1334 
1335 	pci_disable_device(chip->pci);
1336 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1337 	release_firmware(chip->fw);
1338 #endif
1339 	display_power(chip, false);
1340 
1341 	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT)
1342 		snd_hdac_i915_exit(bus);
1343 	kfree(hda);
1344 
1345 	return 0;
1346 }
1347 
1348 static int azx_dev_disconnect(struct snd_device *device)
1349 {
1350 	struct azx *chip = device->device_data;
1351 
1352 	chip->bus.shutdown = 1;
1353 	return 0;
1354 }
1355 
1356 static int azx_dev_free(struct snd_device *device)
1357 {
1358 	return azx_free(device->device_data);
1359 }
1360 
1361 #ifdef SUPPORT_VGA_SWITCHEROO
1362 /*
1363  * Check of disabled HDMI controller by vga_switcheroo
1364  */
1365 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1366 {
1367 	struct pci_dev *p;
1368 
1369 	/* check only discrete GPU */
1370 	switch (pci->vendor) {
1371 	case PCI_VENDOR_ID_ATI:
1372 	case PCI_VENDOR_ID_AMD:
1373 	case PCI_VENDOR_ID_NVIDIA:
1374 		if (pci->devfn == 1) {
1375 			p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1376 							pci->bus->number, 0);
1377 			if (p) {
1378 				if ((p->class >> 16) == PCI_BASE_CLASS_DISPLAY)
1379 					return p;
1380 				pci_dev_put(p);
1381 			}
1382 		}
1383 		break;
1384 	}
1385 	return NULL;
1386 }
1387 
1388 static bool check_hdmi_disabled(struct pci_dev *pci)
1389 {
1390 	bool vga_inactive = false;
1391 	struct pci_dev *p = get_bound_vga(pci);
1392 
1393 	if (p) {
1394 		if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1395 			vga_inactive = true;
1396 		pci_dev_put(p);
1397 	}
1398 	return vga_inactive;
1399 }
1400 #endif /* SUPPORT_VGA_SWITCHEROO */
1401 
1402 /*
1403  * white/black-listing for position_fix
1404  */
1405 static struct snd_pci_quirk position_fix_list[] = {
1406 	SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1407 	SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1408 	SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1409 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1410 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1411 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1412 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1413 	SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1414 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1415 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1416 	SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1417 	SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1418 	SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1419 	SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1420 	{}
1421 };
1422 
1423 static int check_position_fix(struct azx *chip, int fix)
1424 {
1425 	const struct snd_pci_quirk *q;
1426 
1427 	switch (fix) {
1428 	case POS_FIX_AUTO:
1429 	case POS_FIX_LPIB:
1430 	case POS_FIX_POSBUF:
1431 	case POS_FIX_VIACOMBO:
1432 	case POS_FIX_COMBO:
1433 	case POS_FIX_SKL:
1434 		return fix;
1435 	}
1436 
1437 	q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1438 	if (q) {
1439 		dev_info(chip->card->dev,
1440 			 "position_fix set to %d for device %04x:%04x\n",
1441 			 q->value, q->subvendor, q->subdevice);
1442 		return q->value;
1443 	}
1444 
1445 	/* Check VIA/ATI HD Audio Controller exist */
1446 	if (chip->driver_type == AZX_DRIVER_VIA) {
1447 		dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1448 		return POS_FIX_VIACOMBO;
1449 	}
1450 	if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1451 		dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1452 		return POS_FIX_LPIB;
1453 	}
1454 	if (chip->driver_type == AZX_DRIVER_SKL) {
1455 		dev_dbg(chip->card->dev, "Using SKL position fix\n");
1456 		return POS_FIX_SKL;
1457 	}
1458 	return POS_FIX_AUTO;
1459 }
1460 
1461 static void assign_position_fix(struct azx *chip, int fix)
1462 {
1463 	static azx_get_pos_callback_t callbacks[] = {
1464 		[POS_FIX_AUTO] = NULL,
1465 		[POS_FIX_LPIB] = azx_get_pos_lpib,
1466 		[POS_FIX_POSBUF] = azx_get_pos_posbuf,
1467 		[POS_FIX_VIACOMBO] = azx_via_get_position,
1468 		[POS_FIX_COMBO] = azx_get_pos_lpib,
1469 		[POS_FIX_SKL] = azx_get_pos_skl,
1470 	};
1471 
1472 	chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1473 
1474 	/* combo mode uses LPIB only for playback */
1475 	if (fix == POS_FIX_COMBO)
1476 		chip->get_position[1] = NULL;
1477 
1478 	if ((fix == POS_FIX_POSBUF || fix == POS_FIX_SKL) &&
1479 	    (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1480 		chip->get_delay[0] = chip->get_delay[1] =
1481 			azx_get_delay_from_lpib;
1482 	}
1483 
1484 }
1485 
1486 /*
1487  * black-lists for probe_mask
1488  */
1489 static struct snd_pci_quirk probe_mask_list[] = {
1490 	/* Thinkpad often breaks the controller communication when accessing
1491 	 * to the non-working (or non-existing) modem codec slot.
1492 	 */
1493 	SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1494 	SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1495 	SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1496 	/* broken BIOS */
1497 	SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1498 	/* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1499 	SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1500 	/* forced codec slots */
1501 	SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1502 	SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1503 	/* WinFast VP200 H (Teradici) user reported broken communication */
1504 	SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1505 	{}
1506 };
1507 
1508 #define AZX_FORCE_CODEC_MASK	0x100
1509 
1510 static void check_probe_mask(struct azx *chip, int dev)
1511 {
1512 	const struct snd_pci_quirk *q;
1513 
1514 	chip->codec_probe_mask = probe_mask[dev];
1515 	if (chip->codec_probe_mask == -1) {
1516 		q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1517 		if (q) {
1518 			dev_info(chip->card->dev,
1519 				 "probe_mask set to 0x%x for device %04x:%04x\n",
1520 				 q->value, q->subvendor, q->subdevice);
1521 			chip->codec_probe_mask = q->value;
1522 		}
1523 	}
1524 
1525 	/* check forced option */
1526 	if (chip->codec_probe_mask != -1 &&
1527 	    (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1528 		azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
1529 		dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1530 			 (int)azx_bus(chip)->codec_mask);
1531 	}
1532 }
1533 
1534 /*
1535  * white/black-list for enable_msi
1536  */
1537 static struct snd_pci_quirk msi_black_list[] = {
1538 	SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1539 	SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1540 	SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1541 	SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1542 	SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1543 	SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1544 	SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1545 	SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1546 	SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1547 	SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1548 	{}
1549 };
1550 
1551 static void check_msi(struct azx *chip)
1552 {
1553 	const struct snd_pci_quirk *q;
1554 
1555 	if (enable_msi >= 0) {
1556 		chip->msi = !!enable_msi;
1557 		return;
1558 	}
1559 	chip->msi = 1;	/* enable MSI as default */
1560 	q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
1561 	if (q) {
1562 		dev_info(chip->card->dev,
1563 			 "msi for device %04x:%04x set to %d\n",
1564 			 q->subvendor, q->subdevice, q->value);
1565 		chip->msi = q->value;
1566 		return;
1567 	}
1568 
1569 	/* NVidia chipsets seem to cause troubles with MSI */
1570 	if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1571 		dev_info(chip->card->dev, "Disabling MSI\n");
1572 		chip->msi = 0;
1573 	}
1574 }
1575 
1576 /* check the snoop mode availability */
1577 static void azx_check_snoop_available(struct azx *chip)
1578 {
1579 	int snoop = hda_snoop;
1580 
1581 	if (snoop >= 0) {
1582 		dev_info(chip->card->dev, "Force to %s mode by module option\n",
1583 			 snoop ? "snoop" : "non-snoop");
1584 		chip->snoop = snoop;
1585 		chip->uc_buffer = !snoop;
1586 		return;
1587 	}
1588 
1589 	snoop = true;
1590 	if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
1591 	    chip->driver_type == AZX_DRIVER_VIA) {
1592 		/* force to non-snoop mode for a new VIA controller
1593 		 * when BIOS is set
1594 		 */
1595 		u8 val;
1596 		pci_read_config_byte(chip->pci, 0x42, &val);
1597 		if (!(val & 0x80) && (chip->pci->revision == 0x30 ||
1598 				      chip->pci->revision == 0x20))
1599 			snoop = false;
1600 	}
1601 
1602 	if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
1603 		snoop = false;
1604 
1605 	chip->snoop = snoop;
1606 	if (!snoop) {
1607 		dev_info(chip->card->dev, "Force to non-snoop mode\n");
1608 		/* C-Media requires non-cached pages only for CORB/RIRB */
1609 		if (chip->driver_type != AZX_DRIVER_CMEDIA)
1610 			chip->uc_buffer = true;
1611 	}
1612 }
1613 
1614 static void azx_probe_work(struct work_struct *work)
1615 {
1616 	struct hda_intel *hda = container_of(work, struct hda_intel, probe_work);
1617 	azx_probe_continue(&hda->chip);
1618 }
1619 
1620 static int default_bdl_pos_adj(struct azx *chip)
1621 {
1622 	/* some exceptions: Atoms seem problematic with value 1 */
1623 	if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
1624 		switch (chip->pci->device) {
1625 		case 0x0f04: /* Baytrail */
1626 		case 0x2284: /* Braswell */
1627 			return 32;
1628 		}
1629 	}
1630 
1631 	switch (chip->driver_type) {
1632 	case AZX_DRIVER_ICH:
1633 	case AZX_DRIVER_PCH:
1634 		return 1;
1635 	default:
1636 		return 32;
1637 	}
1638 }
1639 
1640 /*
1641  * constructor
1642  */
1643 static const struct hdac_io_ops pci_hda_io_ops;
1644 static const struct hda_controller_ops pci_hda_ops;
1645 
1646 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1647 		      int dev, unsigned int driver_caps,
1648 		      struct azx **rchip)
1649 {
1650 	static struct snd_device_ops ops = {
1651 		.dev_disconnect = azx_dev_disconnect,
1652 		.dev_free = azx_dev_free,
1653 	};
1654 	struct hda_intel *hda;
1655 	struct azx *chip;
1656 	int err;
1657 
1658 	*rchip = NULL;
1659 
1660 	err = pci_enable_device(pci);
1661 	if (err < 0)
1662 		return err;
1663 
1664 	hda = kzalloc(sizeof(*hda), GFP_KERNEL);
1665 	if (!hda) {
1666 		pci_disable_device(pci);
1667 		return -ENOMEM;
1668 	}
1669 
1670 	chip = &hda->chip;
1671 	mutex_init(&chip->open_mutex);
1672 	chip->card = card;
1673 	chip->pci = pci;
1674 	chip->ops = &pci_hda_ops;
1675 	chip->driver_caps = driver_caps;
1676 	chip->driver_type = driver_caps & 0xff;
1677 	check_msi(chip);
1678 	chip->dev_index = dev;
1679 	if (jackpoll_ms[dev] >= 50 && jackpoll_ms[dev] <= 60000)
1680 		chip->jackpoll_interval = msecs_to_jiffies(jackpoll_ms[dev]);
1681 	INIT_LIST_HEAD(&chip->pcm_list);
1682 	INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1683 	INIT_LIST_HEAD(&hda->list);
1684 	init_vga_switcheroo(chip);
1685 	init_completion(&hda->probe_wait);
1686 
1687 	assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1688 
1689 	check_probe_mask(chip, dev);
1690 
1691 	if (single_cmd < 0) /* allow fallback to single_cmd at errors */
1692 		chip->fallback_to_single_cmd = 1;
1693 	else /* explicitly set to single_cmd or not */
1694 		chip->single_cmd = single_cmd;
1695 
1696 	azx_check_snoop_available(chip);
1697 
1698 	if (bdl_pos_adj[dev] < 0)
1699 		chip->bdl_pos_adj = default_bdl_pos_adj(chip);
1700 	else
1701 		chip->bdl_pos_adj = bdl_pos_adj[dev];
1702 
1703 	/* Workaround for a communication error on CFL (bko#199007) */
1704 	if (IS_CFL(pci))
1705 		chip->polling_mode = 1;
1706 
1707 	err = azx_bus_init(chip, model[dev], &pci_hda_io_ops);
1708 	if (err < 0) {
1709 		kfree(hda);
1710 		pci_disable_device(pci);
1711 		return err;
1712 	}
1713 
1714 	if (chip->driver_type == AZX_DRIVER_NVIDIA) {
1715 		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
1716 		chip->bus.needs_damn_long_delay = 1;
1717 	}
1718 
1719 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1720 	if (err < 0) {
1721 		dev_err(card->dev, "Error creating device [card]!\n");
1722 		azx_free(chip);
1723 		return err;
1724 	}
1725 
1726 	/* continue probing in work context as may trigger request module */
1727 	INIT_WORK(&hda->probe_work, azx_probe_work);
1728 
1729 	*rchip = chip;
1730 
1731 	return 0;
1732 }
1733 
1734 static int azx_first_init(struct azx *chip)
1735 {
1736 	int dev = chip->dev_index;
1737 	struct pci_dev *pci = chip->pci;
1738 	struct snd_card *card = chip->card;
1739 	struct hdac_bus *bus = azx_bus(chip);
1740 	int err;
1741 	unsigned short gcap;
1742 	unsigned int dma_bits = 64;
1743 
1744 #if BITS_PER_LONG != 64
1745 	/* Fix up base address on ULI M5461 */
1746 	if (chip->driver_type == AZX_DRIVER_ULI) {
1747 		u16 tmp3;
1748 		pci_read_config_word(pci, 0x40, &tmp3);
1749 		pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1750 		pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1751 	}
1752 #endif
1753 
1754 	err = pci_request_regions(pci, "ICH HD audio");
1755 	if (err < 0)
1756 		return err;
1757 	chip->region_requested = 1;
1758 
1759 	bus->addr = pci_resource_start(pci, 0);
1760 	bus->remap_addr = pci_ioremap_bar(pci, 0);
1761 	if (bus->remap_addr == NULL) {
1762 		dev_err(card->dev, "ioremap error\n");
1763 		return -ENXIO;
1764 	}
1765 
1766 	if (chip->driver_type == AZX_DRIVER_SKL)
1767 		snd_hdac_bus_parse_capabilities(bus);
1768 
1769 	/*
1770 	 * Some Intel CPUs has always running timer (ART) feature and
1771 	 * controller may have Global time sync reporting capability, so
1772 	 * check both of these before declaring synchronized time reporting
1773 	 * capability SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME
1774 	 */
1775 	chip->gts_present = false;
1776 
1777 #ifdef CONFIG_X86
1778 	if (bus->ppcap && boot_cpu_has(X86_FEATURE_ART))
1779 		chip->gts_present = true;
1780 #endif
1781 
1782 	if (chip->msi) {
1783 		if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
1784 			dev_dbg(card->dev, "Disabling 64bit MSI\n");
1785 			pci->no_64bit_msi = true;
1786 		}
1787 		if (pci_enable_msi(pci) < 0)
1788 			chip->msi = 0;
1789 	}
1790 
1791 	if (azx_acquire_irq(chip, 0) < 0)
1792 		return -EBUSY;
1793 
1794 	pci_set_master(pci);
1795 	synchronize_irq(bus->irq);
1796 
1797 	gcap = azx_readw(chip, GCAP);
1798 	dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1799 
1800 	/* AMD devices support 40 or 48bit DMA, take the safe one */
1801 	if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
1802 		dma_bits = 40;
1803 
1804 	/* disable SB600 64bit support for safety */
1805 	if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1806 		struct pci_dev *p_smbus;
1807 		dma_bits = 40;
1808 		p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1809 					 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1810 					 NULL);
1811 		if (p_smbus) {
1812 			if (p_smbus->revision < 0x30)
1813 				gcap &= ~AZX_GCAP_64OK;
1814 			pci_dev_put(p_smbus);
1815 		}
1816 	}
1817 
1818 	/* NVidia hardware normally only supports up to 40 bits of DMA */
1819 	if (chip->pci->vendor == PCI_VENDOR_ID_NVIDIA)
1820 		dma_bits = 40;
1821 
1822 	/* disable 64bit DMA address on some devices */
1823 	if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1824 		dev_dbg(card->dev, "Disabling 64bit DMA\n");
1825 		gcap &= ~AZX_GCAP_64OK;
1826 	}
1827 
1828 	/* disable buffer size rounding to 128-byte multiples if supported */
1829 	if (align_buffer_size >= 0)
1830 		chip->align_buffer_size = !!align_buffer_size;
1831 	else {
1832 		if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
1833 			chip->align_buffer_size = 0;
1834 		else
1835 			chip->align_buffer_size = 1;
1836 	}
1837 
1838 	/* allow 64bit DMA address if supported by H/W */
1839 	if (!(gcap & AZX_GCAP_64OK))
1840 		dma_bits = 32;
1841 	if (!dma_set_mask(&pci->dev, DMA_BIT_MASK(dma_bits))) {
1842 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(dma_bits));
1843 	} else {
1844 		dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
1845 		dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32));
1846 	}
1847 
1848 	/* read number of streams from GCAP register instead of using
1849 	 * hardcoded value
1850 	 */
1851 	chip->capture_streams = (gcap >> 8) & 0x0f;
1852 	chip->playback_streams = (gcap >> 12) & 0x0f;
1853 	if (!chip->playback_streams && !chip->capture_streams) {
1854 		/* gcap didn't give any info, switching to old method */
1855 
1856 		switch (chip->driver_type) {
1857 		case AZX_DRIVER_ULI:
1858 			chip->playback_streams = ULI_NUM_PLAYBACK;
1859 			chip->capture_streams = ULI_NUM_CAPTURE;
1860 			break;
1861 		case AZX_DRIVER_ATIHDMI:
1862 		case AZX_DRIVER_ATIHDMI_NS:
1863 			chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1864 			chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1865 			break;
1866 		case AZX_DRIVER_GENERIC:
1867 		default:
1868 			chip->playback_streams = ICH6_NUM_PLAYBACK;
1869 			chip->capture_streams = ICH6_NUM_CAPTURE;
1870 			break;
1871 		}
1872 	}
1873 	chip->capture_index_offset = 0;
1874 	chip->playback_index_offset = chip->capture_streams;
1875 	chip->num_streams = chip->playback_streams + chip->capture_streams;
1876 
1877 	/* sanity check for the SDxCTL.STRM field overflow */
1878 	if (chip->num_streams > 15 &&
1879 	    (chip->driver_caps & AZX_DCAPS_SEPARATE_STREAM_TAG) == 0) {
1880 		dev_warn(chip->card->dev, "number of I/O streams is %d, "
1881 			 "forcing separate stream tags", chip->num_streams);
1882 		chip->driver_caps |= AZX_DCAPS_SEPARATE_STREAM_TAG;
1883 	}
1884 
1885 	/* initialize streams */
1886 	err = azx_init_streams(chip);
1887 	if (err < 0)
1888 		return err;
1889 
1890 	err = azx_alloc_stream_pages(chip);
1891 	if (err < 0)
1892 		return err;
1893 
1894 	/* initialize chip */
1895 	azx_init_pci(chip);
1896 
1897 	snd_hdac_i915_set_bclk(bus);
1898 
1899 	hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
1900 
1901 	/* codec detection */
1902 	if (!azx_bus(chip)->codec_mask) {
1903 		dev_err(card->dev, "no codecs found!\n");
1904 		return -ENODEV;
1905 	}
1906 
1907 	strcpy(card->driver, "HDA-Intel");
1908 	strlcpy(card->shortname, driver_short_names[chip->driver_type],
1909 		sizeof(card->shortname));
1910 	snprintf(card->longname, sizeof(card->longname),
1911 		 "%s at 0x%lx irq %i",
1912 		 card->shortname, bus->addr, bus->irq);
1913 
1914 	return 0;
1915 }
1916 
1917 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1918 /* callback from request_firmware_nowait() */
1919 static void azx_firmware_cb(const struct firmware *fw, void *context)
1920 {
1921 	struct snd_card *card = context;
1922 	struct azx *chip = card->private_data;
1923 	struct pci_dev *pci = chip->pci;
1924 
1925 	if (!fw) {
1926 		dev_err(card->dev, "Cannot load firmware, aborting\n");
1927 		goto error;
1928 	}
1929 
1930 	chip->fw = fw;
1931 	if (!chip->disabled) {
1932 		/* continue probing */
1933 		if (azx_probe_continue(chip))
1934 			goto error;
1935 	}
1936 	return; /* OK */
1937 
1938  error:
1939 	snd_card_free(card);
1940 	pci_set_drvdata(pci, NULL);
1941 }
1942 #endif
1943 
1944 /*
1945  * HDA controller ops.
1946  */
1947 
1948 /* PCI register access. */
1949 static void pci_azx_writel(u32 value, u32 __iomem *addr)
1950 {
1951 	writel(value, addr);
1952 }
1953 
1954 static u32 pci_azx_readl(u32 __iomem *addr)
1955 {
1956 	return readl(addr);
1957 }
1958 
1959 static void pci_azx_writew(u16 value, u16 __iomem *addr)
1960 {
1961 	writew(value, addr);
1962 }
1963 
1964 static u16 pci_azx_readw(u16 __iomem *addr)
1965 {
1966 	return readw(addr);
1967 }
1968 
1969 static void pci_azx_writeb(u8 value, u8 __iomem *addr)
1970 {
1971 	writeb(value, addr);
1972 }
1973 
1974 static u8 pci_azx_readb(u8 __iomem *addr)
1975 {
1976 	return readb(addr);
1977 }
1978 
1979 static int disable_msi_reset_irq(struct azx *chip)
1980 {
1981 	struct hdac_bus *bus = azx_bus(chip);
1982 	int err;
1983 
1984 	free_irq(bus->irq, chip);
1985 	bus->irq = -1;
1986 	pci_disable_msi(chip->pci);
1987 	chip->msi = 0;
1988 	err = azx_acquire_irq(chip, 1);
1989 	if (err < 0)
1990 		return err;
1991 
1992 	return 0;
1993 }
1994 
1995 /* DMA page allocation helpers.  */
1996 static int dma_alloc_pages(struct hdac_bus *bus,
1997 			   int type,
1998 			   size_t size,
1999 			   struct snd_dma_buffer *buf)
2000 {
2001 	struct azx *chip = bus_to_azx(bus);
2002 
2003 	if (!azx_snoop(chip) && type == SNDRV_DMA_TYPE_DEV)
2004 		type = SNDRV_DMA_TYPE_DEV_UC;
2005 	return snd_dma_alloc_pages(type, bus->dev, size, buf);
2006 }
2007 
2008 static void dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf)
2009 {
2010 	snd_dma_free_pages(buf);
2011 }
2012 
2013 static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
2014 			     struct vm_area_struct *area)
2015 {
2016 #ifdef CONFIG_X86
2017 	struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
2018 	struct azx *chip = apcm->chip;
2019 	if (chip->uc_buffer)
2020 		area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
2021 #endif
2022 }
2023 
2024 static const struct hdac_io_ops pci_hda_io_ops = {
2025 	.reg_writel = pci_azx_writel,
2026 	.reg_readl = pci_azx_readl,
2027 	.reg_writew = pci_azx_writew,
2028 	.reg_readw = pci_azx_readw,
2029 	.reg_writeb = pci_azx_writeb,
2030 	.reg_readb = pci_azx_readb,
2031 	.dma_alloc_pages = dma_alloc_pages,
2032 	.dma_free_pages = dma_free_pages,
2033 };
2034 
2035 static const struct hda_controller_ops pci_hda_ops = {
2036 	.disable_msi_reset_irq = disable_msi_reset_irq,
2037 	.pcm_mmap_prepare = pcm_mmap_prepare,
2038 	.position_check = azx_position_check,
2039 };
2040 
2041 static int azx_probe(struct pci_dev *pci,
2042 		     const struct pci_device_id *pci_id)
2043 {
2044 	static int dev;
2045 	struct snd_card *card;
2046 	struct hda_intel *hda;
2047 	struct azx *chip;
2048 	bool schedule_probe;
2049 	int err;
2050 
2051 	if (dev >= SNDRV_CARDS)
2052 		return -ENODEV;
2053 	if (!enable[dev]) {
2054 		dev++;
2055 		return -ENOENT;
2056 	}
2057 
2058 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2059 			   0, &card);
2060 	if (err < 0) {
2061 		dev_err(&pci->dev, "Error creating card!\n");
2062 		return err;
2063 	}
2064 
2065 	err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
2066 	if (err < 0)
2067 		goto out_free;
2068 	card->private_data = chip;
2069 	hda = container_of(chip, struct hda_intel, chip);
2070 
2071 	pci_set_drvdata(pci, card);
2072 
2073 	err = register_vga_switcheroo(chip);
2074 	if (err < 0) {
2075 		dev_err(card->dev, "Error registering vga_switcheroo client\n");
2076 		goto out_free;
2077 	}
2078 
2079 	if (check_hdmi_disabled(pci)) {
2080 		dev_info(card->dev, "VGA controller is disabled\n");
2081 		dev_info(card->dev, "Delaying initialization\n");
2082 		chip->disabled = true;
2083 	}
2084 
2085 	schedule_probe = !chip->disabled;
2086 
2087 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2088 	if (patch[dev] && *patch[dev]) {
2089 		dev_info(card->dev, "Applying patch firmware '%s'\n",
2090 			 patch[dev]);
2091 		err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
2092 					      &pci->dev, GFP_KERNEL, card,
2093 					      azx_firmware_cb);
2094 		if (err < 0)
2095 			goto out_free;
2096 		schedule_probe = false; /* continued in azx_firmware_cb() */
2097 	}
2098 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
2099 
2100 #ifndef CONFIG_SND_HDA_I915
2101 	if (CONTROLLER_IN_GPU(pci))
2102 		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
2103 #endif
2104 
2105 	if (schedule_probe)
2106 		schedule_work(&hda->probe_work);
2107 
2108 	dev++;
2109 	if (chip->disabled)
2110 		complete_all(&hda->probe_wait);
2111 	return 0;
2112 
2113 out_free:
2114 	snd_card_free(card);
2115 	return err;
2116 }
2117 
2118 #ifdef CONFIG_PM
2119 /* On some boards setting power_save to a non 0 value leads to clicking /
2120  * popping sounds when ever we enter/leave powersaving mode. Ideally we would
2121  * figure out how to avoid these sounds, but that is not always feasible.
2122  * So we keep a list of devices where we disable powersaving as its known
2123  * to causes problems on these devices.
2124  */
2125 static struct snd_pci_quirk power_save_blacklist[] = {
2126 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2127 	SND_PCI_QUIRK(0x1849, 0xc892, "Asrock B85M-ITX", 0),
2128 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2129 	SND_PCI_QUIRK(0x1849, 0x0397, "Asrock N68C-S UCC", 0),
2130 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2131 	SND_PCI_QUIRK(0x1849, 0x7662, "Asrock H81M-HDS", 0),
2132 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2133 	SND_PCI_QUIRK(0x1043, 0x8733, "Asus Prime X370-Pro", 0),
2134 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1581607 */
2135 	SND_PCI_QUIRK(0x1558, 0x3501, "Clevo W35xSS_370SS", 0),
2136 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2137 	SND_PCI_QUIRK(0x1028, 0x0497, "Dell Precision T3600", 0),
2138 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2139 	/* Note the P55A-UD3 and Z87-D3HP share the subsys id for the HDA dev */
2140 	SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte P55A-UD3 / Z87-D3HP", 0),
2141 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2142 	SND_PCI_QUIRK(0x8086, 0x2040, "Intel DZ77BH-55K", 0),
2143 	/* https://bugzilla.kernel.org/show_bug.cgi?id=199607 */
2144 	SND_PCI_QUIRK(0x8086, 0x2057, "Intel NUC5i7RYB", 0),
2145 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1520902 */
2146 	SND_PCI_QUIRK(0x8086, 0x2068, "Intel NUC7i3BNB", 0),
2147 	/* https://bugzilla.redhat.com/show_bug.cgi?id=1572975 */
2148 	SND_PCI_QUIRK(0x17aa, 0x36a7, "Lenovo C50 All in one", 0),
2149 	/* https://bugzilla.kernel.org/show_bug.cgi?id=198611 */
2150 	SND_PCI_QUIRK(0x17aa, 0x2227, "Lenovo X1 Carbon 3rd Gen", 0),
2151 	{}
2152 };
2153 #endif /* CONFIG_PM */
2154 
2155 static void set_default_power_save(struct azx *chip)
2156 {
2157 	int val = power_save;
2158 
2159 #ifdef CONFIG_PM
2160 	if (pm_blacklist) {
2161 		const struct snd_pci_quirk *q;
2162 
2163 		q = snd_pci_quirk_lookup(chip->pci, power_save_blacklist);
2164 		if (q && val) {
2165 			dev_info(chip->card->dev, "device %04x:%04x is on the power_save blacklist, forcing power_save to 0\n",
2166 				 q->subvendor, q->subdevice);
2167 			val = 0;
2168 		}
2169 	}
2170 #endif /* CONFIG_PM */
2171 	snd_hda_set_power_save(&chip->bus, val * 1000);
2172 }
2173 
2174 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
2175 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
2176 	[AZX_DRIVER_NVIDIA] = 8,
2177 	[AZX_DRIVER_TERA] = 1,
2178 };
2179 
2180 static int azx_probe_continue(struct azx *chip)
2181 {
2182 	struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
2183 	struct hdac_bus *bus = azx_bus(chip);
2184 	struct pci_dev *pci = chip->pci;
2185 	int dev = chip->dev_index;
2186 	int err;
2187 
2188 	hda->probe_continued = 1;
2189 
2190 	/* bind with i915 if needed */
2191 	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
2192 		err = snd_hdac_i915_init(bus);
2193 		if (err < 0) {
2194 			/* if the controller is bound only with HDMI/DP
2195 			 * (for HSW and BDW), we need to abort the probe;
2196 			 * for other chips, still continue probing as other
2197 			 * codecs can be on the same link.
2198 			 */
2199 			if (CONTROLLER_IN_GPU(pci)) {
2200 				dev_err(chip->card->dev,
2201 					"HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
2202 				goto out_free;
2203 			} else {
2204 				/* don't bother any longer */
2205 				chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
2206 			}
2207 		}
2208 
2209 		/* HSW/BDW controllers need this power */
2210 		if (CONTROLLER_IN_GPU(pci))
2211 			hda->need_i915_power = 1;
2212 	}
2213 
2214 	/* Request display power well for the HDA controller or codec. For
2215 	 * Haswell/Broadwell, both the display HDA controller and codec need
2216 	 * this power. For other platforms, like Baytrail/Braswell, only the
2217 	 * display codec needs the power and it can be released after probe.
2218 	 */
2219 	display_power(chip, true);
2220 
2221 	err = azx_first_init(chip);
2222 	if (err < 0)
2223 		goto out_free;
2224 
2225 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2226 	chip->beep_mode = beep_mode[dev];
2227 #endif
2228 
2229 	/* create codec instances */
2230 	err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
2231 	if (err < 0)
2232 		goto out_free;
2233 
2234 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2235 	if (chip->fw) {
2236 		err = snd_hda_load_patch(&chip->bus, chip->fw->size,
2237 					 chip->fw->data);
2238 		if (err < 0)
2239 			goto out_free;
2240 #ifndef CONFIG_PM
2241 		release_firmware(chip->fw); /* no longer needed */
2242 		chip->fw = NULL;
2243 #endif
2244 	}
2245 #endif
2246 	if ((probe_only[dev] & 1) == 0) {
2247 		err = azx_codec_configure(chip);
2248 		if (err < 0)
2249 			goto out_free;
2250 	}
2251 
2252 	err = snd_card_register(chip->card);
2253 	if (err < 0)
2254 		goto out_free;
2255 
2256 	setup_vga_switcheroo_runtime_pm(chip);
2257 
2258 	chip->running = 1;
2259 	azx_add_card_list(chip);
2260 
2261 	set_default_power_save(chip);
2262 
2263 	if (azx_has_pm_runtime(chip))
2264 		pm_runtime_put_autosuspend(&pci->dev);
2265 
2266 out_free:
2267 	if (err < 0 || !hda->need_i915_power)
2268 		display_power(chip, false);
2269 	if (err < 0)
2270 		hda->init_failed = 1;
2271 	complete_all(&hda->probe_wait);
2272 	return err;
2273 }
2274 
2275 static void azx_remove(struct pci_dev *pci)
2276 {
2277 	struct snd_card *card = pci_get_drvdata(pci);
2278 	struct azx *chip;
2279 	struct hda_intel *hda;
2280 
2281 	if (card) {
2282 		/* cancel the pending probing work */
2283 		chip = card->private_data;
2284 		hda = container_of(chip, struct hda_intel, chip);
2285 		/* FIXME: below is an ugly workaround.
2286 		 * Both device_release_driver() and driver_probe_device()
2287 		 * take *both* the device's and its parent's lock before
2288 		 * calling the remove() and probe() callbacks.  The codec
2289 		 * probe takes the locks of both the codec itself and its
2290 		 * parent, i.e. the PCI controller dev.  Meanwhile, when
2291 		 * the PCI controller is unbound, it takes its lock, too
2292 		 * ==> ouch, a deadlock!
2293 		 * As a workaround, we unlock temporarily here the controller
2294 		 * device during cancel_work_sync() call.
2295 		 */
2296 		device_unlock(&pci->dev);
2297 		cancel_work_sync(&hda->probe_work);
2298 		device_lock(&pci->dev);
2299 
2300 		snd_card_free(card);
2301 	}
2302 }
2303 
2304 static void azx_shutdown(struct pci_dev *pci)
2305 {
2306 	struct snd_card *card = pci_get_drvdata(pci);
2307 	struct azx *chip;
2308 
2309 	if (!card)
2310 		return;
2311 	chip = card->private_data;
2312 	if (chip && chip->running)
2313 		azx_stop_chip(chip);
2314 }
2315 
2316 /* PCI IDs */
2317 static const struct pci_device_id azx_ids[] = {
2318 	/* CPT */
2319 	{ PCI_DEVICE(0x8086, 0x1c20),
2320 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2321 	/* PBG */
2322 	{ PCI_DEVICE(0x8086, 0x1d20),
2323 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2324 	/* Panther Point */
2325 	{ PCI_DEVICE(0x8086, 0x1e20),
2326 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2327 	/* Lynx Point */
2328 	{ PCI_DEVICE(0x8086, 0x8c20),
2329 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2330 	/* 9 Series */
2331 	{ PCI_DEVICE(0x8086, 0x8ca0),
2332 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2333 	/* Wellsburg */
2334 	{ PCI_DEVICE(0x8086, 0x8d20),
2335 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2336 	{ PCI_DEVICE(0x8086, 0x8d21),
2337 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2338 	/* Lewisburg */
2339 	{ PCI_DEVICE(0x8086, 0xa1f0),
2340 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2341 	{ PCI_DEVICE(0x8086, 0xa270),
2342 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2343 	/* Lynx Point-LP */
2344 	{ PCI_DEVICE(0x8086, 0x9c20),
2345 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2346 	/* Lynx Point-LP */
2347 	{ PCI_DEVICE(0x8086, 0x9c21),
2348 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2349 	/* Wildcat Point-LP */
2350 	{ PCI_DEVICE(0x8086, 0x9ca0),
2351 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2352 	/* Sunrise Point */
2353 	{ PCI_DEVICE(0x8086, 0xa170),
2354 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2355 	/* Sunrise Point-LP */
2356 	{ PCI_DEVICE(0x8086, 0x9d70),
2357 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2358 	/* Kabylake */
2359 	{ PCI_DEVICE(0x8086, 0xa171),
2360 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2361 	/* Kabylake-LP */
2362 	{ PCI_DEVICE(0x8086, 0x9d71),
2363 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2364 	/* Kabylake-H */
2365 	{ PCI_DEVICE(0x8086, 0xa2f0),
2366 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2367 	/* Coffelake */
2368 	{ PCI_DEVICE(0x8086, 0xa348),
2369 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2370 	/* Cannonlake */
2371 	{ PCI_DEVICE(0x8086, 0x9dc8),
2372 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2373 	/* Icelake */
2374 	{ PCI_DEVICE(0x8086, 0x34c8),
2375 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2376 	/* Broxton-P(Apollolake) */
2377 	{ PCI_DEVICE(0x8086, 0x5a98),
2378 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2379 	/* Broxton-T */
2380 	{ PCI_DEVICE(0x8086, 0x1a98),
2381 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2382 	/* Gemini-Lake */
2383 	{ PCI_DEVICE(0x8086, 0x3198),
2384 	  .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2385 	/* Haswell */
2386 	{ PCI_DEVICE(0x8086, 0x0a0c),
2387 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2388 	{ PCI_DEVICE(0x8086, 0x0c0c),
2389 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2390 	{ PCI_DEVICE(0x8086, 0x0d0c),
2391 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2392 	/* Broadwell */
2393 	{ PCI_DEVICE(0x8086, 0x160c),
2394 	  .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL },
2395 	/* 5 Series/3400 */
2396 	{ PCI_DEVICE(0x8086, 0x3b56),
2397 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2398 	/* Poulsbo */
2399 	{ PCI_DEVICE(0x8086, 0x811b),
2400 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2401 	/* Oaktrail */
2402 	{ PCI_DEVICE(0x8086, 0x080a),
2403 	  .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2404 	/* BayTrail */
2405 	{ PCI_DEVICE(0x8086, 0x0f04),
2406 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL },
2407 	/* Braswell */
2408 	{ PCI_DEVICE(0x8086, 0x2284),
2409 	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL },
2410 	/* ICH6 */
2411 	{ PCI_DEVICE(0x8086, 0x2668),
2412 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2413 	/* ICH7 */
2414 	{ PCI_DEVICE(0x8086, 0x27d8),
2415 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2416 	/* ESB2 */
2417 	{ PCI_DEVICE(0x8086, 0x269a),
2418 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2419 	/* ICH8 */
2420 	{ PCI_DEVICE(0x8086, 0x284b),
2421 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2422 	/* ICH9 */
2423 	{ PCI_DEVICE(0x8086, 0x293e),
2424 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2425 	/* ICH9 */
2426 	{ PCI_DEVICE(0x8086, 0x293f),
2427 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2428 	/* ICH10 */
2429 	{ PCI_DEVICE(0x8086, 0x3a3e),
2430 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2431 	/* ICH10 */
2432 	{ PCI_DEVICE(0x8086, 0x3a6e),
2433 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2434 	/* Generic Intel */
2435 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2436 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2437 	  .class_mask = 0xffffff,
2438 	  .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
2439 	/* ATI SB 450/600/700/800/900 */
2440 	{ PCI_DEVICE(0x1002, 0x437b),
2441 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2442 	{ PCI_DEVICE(0x1002, 0x4383),
2443 	  .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2444 	/* AMD Hudson */
2445 	{ PCI_DEVICE(0x1022, 0x780d),
2446 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2447 	/* AMD Stoney */
2448 	{ PCI_DEVICE(0x1022, 0x157a),
2449 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB |
2450 			 AZX_DCAPS_PM_RUNTIME },
2451 	/* AMD Raven */
2452 	{ PCI_DEVICE(0x1022, 0x15e3),
2453 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB |
2454 			 AZX_DCAPS_PM_RUNTIME },
2455 	/* ATI HDMI */
2456 	{ PCI_DEVICE(0x1002, 0x0002),
2457 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2458 	{ PCI_DEVICE(0x1002, 0x1308),
2459 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2460 	{ PCI_DEVICE(0x1002, 0x157a),
2461 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2462 	{ PCI_DEVICE(0x1002, 0x15b3),
2463 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2464 	{ PCI_DEVICE(0x1002, 0x793b),
2465 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2466 	{ PCI_DEVICE(0x1002, 0x7919),
2467 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2468 	{ PCI_DEVICE(0x1002, 0x960f),
2469 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2470 	{ PCI_DEVICE(0x1002, 0x970f),
2471 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2472 	{ PCI_DEVICE(0x1002, 0x9840),
2473 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2474 	{ PCI_DEVICE(0x1002, 0xaa00),
2475 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2476 	{ PCI_DEVICE(0x1002, 0xaa08),
2477 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2478 	{ PCI_DEVICE(0x1002, 0xaa10),
2479 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2480 	{ PCI_DEVICE(0x1002, 0xaa18),
2481 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2482 	{ PCI_DEVICE(0x1002, 0xaa20),
2483 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2484 	{ PCI_DEVICE(0x1002, 0xaa28),
2485 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2486 	{ PCI_DEVICE(0x1002, 0xaa30),
2487 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2488 	{ PCI_DEVICE(0x1002, 0xaa38),
2489 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2490 	{ PCI_DEVICE(0x1002, 0xaa40),
2491 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2492 	{ PCI_DEVICE(0x1002, 0xaa48),
2493 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2494 	{ PCI_DEVICE(0x1002, 0xaa50),
2495 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2496 	{ PCI_DEVICE(0x1002, 0xaa58),
2497 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2498 	{ PCI_DEVICE(0x1002, 0xaa60),
2499 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2500 	{ PCI_DEVICE(0x1002, 0xaa68),
2501 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2502 	{ PCI_DEVICE(0x1002, 0xaa80),
2503 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2504 	{ PCI_DEVICE(0x1002, 0xaa88),
2505 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2506 	{ PCI_DEVICE(0x1002, 0xaa90),
2507 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2508 	{ PCI_DEVICE(0x1002, 0xaa98),
2509 	  .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2510 	{ PCI_DEVICE(0x1002, 0x9902),
2511 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2512 	{ PCI_DEVICE(0x1002, 0xaaa0),
2513 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2514 	{ PCI_DEVICE(0x1002, 0xaaa8),
2515 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2516 	{ PCI_DEVICE(0x1002, 0xaab0),
2517 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2518 	{ PCI_DEVICE(0x1002, 0xaac0),
2519 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2520 	{ PCI_DEVICE(0x1002, 0xaac8),
2521 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2522 	{ PCI_DEVICE(0x1002, 0xaad8),
2523 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2524 	{ PCI_DEVICE(0x1002, 0xaae8),
2525 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2526 	{ PCI_DEVICE(0x1002, 0xaae0),
2527 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2528 	{ PCI_DEVICE(0x1002, 0xaaf0),
2529 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2530 	/* VIA VT8251/VT8237A */
2531 	{ PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2532 	/* VIA GFX VT7122/VX900 */
2533 	{ PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2534 	/* VIA GFX VT6122/VX11 */
2535 	{ PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2536 	/* SIS966 */
2537 	{ PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2538 	/* ULI M5461 */
2539 	{ PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2540 	/* NVIDIA MCP */
2541 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2542 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2543 	  .class_mask = 0xffffff,
2544 	  .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2545 	/* Teradici */
2546 	{ PCI_DEVICE(0x6549, 0x1200),
2547 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2548 	{ PCI_DEVICE(0x6549, 0x2200),
2549 	  .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2550 	/* Creative X-Fi (CA0110-IBG) */
2551 	/* CTHDA chips */
2552 	{ PCI_DEVICE(0x1102, 0x0010),
2553 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2554 	{ PCI_DEVICE(0x1102, 0x0012),
2555 	  .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2556 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2557 	/* the following entry conflicts with snd-ctxfi driver,
2558 	 * as ctxfi driver mutates from HD-audio to native mode with
2559 	 * a special command sequence.
2560 	 */
2561 	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2562 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2563 	  .class_mask = 0xffffff,
2564 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2565 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2566 #else
2567 	/* this entry seems still valid -- i.e. without emu20kx chip */
2568 	{ PCI_DEVICE(0x1102, 0x0009),
2569 	  .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2570 	  AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2571 #endif
2572 	/* CM8888 */
2573 	{ PCI_DEVICE(0x13f6, 0x5011),
2574 	  .driver_data = AZX_DRIVER_CMEDIA |
2575 	  AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
2576 	/* Vortex86MX */
2577 	{ PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2578 	/* VMware HDAudio */
2579 	{ PCI_DEVICE(0x15ad, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2580 	/* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2581 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2582 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2583 	  .class_mask = 0xffffff,
2584 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2585 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2586 	  .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2587 	  .class_mask = 0xffffff,
2588 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2589 	{ 0, }
2590 };
2591 MODULE_DEVICE_TABLE(pci, azx_ids);
2592 
2593 /* pci_driver definition */
2594 static struct pci_driver azx_driver = {
2595 	.name = KBUILD_MODNAME,
2596 	.id_table = azx_ids,
2597 	.probe = azx_probe,
2598 	.remove = azx_remove,
2599 	.shutdown = azx_shutdown,
2600 	.driver = {
2601 		.pm = AZX_PM_OPS,
2602 	},
2603 };
2604 
2605 module_pci_driver(azx_driver);
2606