xref: /openbmc/linux/sound/pci/hda/hda_proc.c (revision e0bf6c5c)
1 /*
2  * Universal Interface for Intel High Definition Audio Codec
3  *
4  * Generic proc interface
5  *
6  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
7  *
8  *
9  *  This driver is free software; you can redistribute it and/or modify
10  *  it under the terms of the GNU General Public License as published by
11  *  the Free Software Foundation; either version 2 of the License, or
12  *  (at your option) any later version.
13  *
14  *  This driver is distributed in the hope that it will be useful,
15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  *  GNU General Public License for more details.
18  *
19  *  You should have received a copy of the GNU General Public License
20  *  along with this program; if not, write to the Free Software
21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22  */
23 
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <sound/core.h>
27 #include <linux/module.h>
28 #include "hda_codec.h"
29 #include "hda_local.h"
30 
31 static int dump_coef = -1;
32 module_param(dump_coef, int, 0644);
33 MODULE_PARM_DESC(dump_coef, "Dump processing coefficients in codec proc file (-1=auto, 0=disable, 1=enable)");
34 
35 static char *bits_names(unsigned int bits, char *names[], int size)
36 {
37 	int i, n;
38 	static char buf[128];
39 
40 	for (i = 0, n = 0; i < size; i++) {
41 		if (bits & (1U<<i) && names[i])
42 			n += snprintf(buf + n, sizeof(buf) - n, " %s",
43 				      names[i]);
44 	}
45 	buf[n] = '\0';
46 
47 	return buf;
48 }
49 
50 static const char *get_wid_type_name(unsigned int wid_value)
51 {
52 	static char *names[16] = {
53 		[AC_WID_AUD_OUT] = "Audio Output",
54 		[AC_WID_AUD_IN] = "Audio Input",
55 		[AC_WID_AUD_MIX] = "Audio Mixer",
56 		[AC_WID_AUD_SEL] = "Audio Selector",
57 		[AC_WID_PIN] = "Pin Complex",
58 		[AC_WID_POWER] = "Power Widget",
59 		[AC_WID_VOL_KNB] = "Volume Knob Widget",
60 		[AC_WID_BEEP] = "Beep Generator Widget",
61 		[AC_WID_VENDOR] = "Vendor Defined Widget",
62 	};
63 	if (wid_value == -1)
64 		return "UNKNOWN Widget";
65 	wid_value &= 0xf;
66 	if (names[wid_value])
67 		return names[wid_value];
68 	else
69 		return "UNKNOWN Widget";
70 }
71 
72 static void print_nid_array(struct snd_info_buffer *buffer,
73 			    struct hda_codec *codec, hda_nid_t nid,
74 			    struct snd_array *array)
75 {
76 	int i;
77 	struct hda_nid_item *items = array->list, *item;
78 	struct snd_kcontrol *kctl;
79 	for (i = 0; i < array->used; i++) {
80 		item = &items[i];
81 		if (item->nid == nid) {
82 			kctl = item->kctl;
83 			snd_iprintf(buffer,
84 			  "  Control: name=\"%s\", index=%i, device=%i\n",
85 			  kctl->id.name, kctl->id.index + item->index,
86 			  kctl->id.device);
87 			if (item->flags & HDA_NID_ITEM_AMP)
88 				snd_iprintf(buffer,
89 				  "    ControlAmp: chs=%lu, dir=%s, "
90 				  "idx=%lu, ofs=%lu\n",
91 				  get_amp_channels(kctl),
92 				  get_amp_direction(kctl) ? "Out" : "In",
93 				  get_amp_index(kctl),
94 				  get_amp_offset(kctl));
95 		}
96 	}
97 }
98 
99 static void print_nid_pcms(struct snd_info_buffer *buffer,
100 			   struct hda_codec *codec, hda_nid_t nid)
101 {
102 	int pcm, type;
103 	struct hda_pcm *cpcm;
104 	for (pcm = 0; pcm < codec->num_pcms; pcm++) {
105 		cpcm = &codec->pcm_info[pcm];
106 		for (type = 0; type < 2; type++) {
107 			if (cpcm->stream[type].nid != nid || cpcm->pcm == NULL)
108 				continue;
109 			snd_iprintf(buffer, "  Device: name=\"%s\", "
110 				    "type=\"%s\", device=%i\n",
111 				    cpcm->name,
112 				    snd_hda_pcm_type_name[cpcm->pcm_type],
113 				    cpcm->pcm->device);
114 		}
115 	}
116 }
117 
118 static void print_amp_caps(struct snd_info_buffer *buffer,
119 			   struct hda_codec *codec, hda_nid_t nid, int dir)
120 {
121 	unsigned int caps;
122 	caps = snd_hda_param_read(codec, nid,
123 				  dir == HDA_OUTPUT ?
124 				    AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
125 	if (caps == -1 || caps == 0) {
126 		snd_iprintf(buffer, "N/A\n");
127 		return;
128 	}
129 	snd_iprintf(buffer, "ofs=0x%02x, nsteps=0x%02x, stepsize=0x%02x, "
130 		    "mute=%x\n",
131 		    caps & AC_AMPCAP_OFFSET,
132 		    (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT,
133 		    (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT,
134 		    (caps & AC_AMPCAP_MUTE) >> AC_AMPCAP_MUTE_SHIFT);
135 }
136 
137 /* is this a stereo widget or a stereo-to-mono mix? */
138 static bool is_stereo_amps(struct hda_codec *codec, hda_nid_t nid,
139 			   int dir, unsigned int wcaps, int indices)
140 {
141 	hda_nid_t conn;
142 
143 	if (wcaps & AC_WCAP_STEREO)
144 		return true;
145 	/* check for a stereo-to-mono mix; it must be:
146 	 * only a single connection, only for input, and only a mixer widget
147 	 */
148 	if (indices != 1 || dir != HDA_INPUT ||
149 	    get_wcaps_type(wcaps) != AC_WID_AUD_MIX)
150 		return false;
151 
152 	if (snd_hda_get_raw_connections(codec, nid, &conn, 1) < 0)
153 		return false;
154 	/* the connection source is a stereo? */
155 	wcaps = snd_hda_param_read(codec, conn, AC_PAR_AUDIO_WIDGET_CAP);
156 	return !!(wcaps & AC_WCAP_STEREO);
157 }
158 
159 static void print_amp_vals(struct snd_info_buffer *buffer,
160 			   struct hda_codec *codec, hda_nid_t nid,
161 			   int dir, unsigned int wcaps, int indices)
162 {
163 	unsigned int val;
164 	bool stereo;
165 	int i;
166 
167 	stereo = is_stereo_amps(codec, nid, dir, wcaps, indices);
168 
169 	dir = dir == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
170 	for (i = 0; i < indices; i++) {
171 		snd_iprintf(buffer, " [");
172 		val = snd_hda_codec_read(codec, nid, 0,
173 					 AC_VERB_GET_AMP_GAIN_MUTE,
174 					 AC_AMP_GET_LEFT | dir | i);
175 		snd_iprintf(buffer, "0x%02x", val);
176 		if (stereo) {
177 			val = snd_hda_codec_read(codec, nid, 0,
178 						 AC_VERB_GET_AMP_GAIN_MUTE,
179 						 AC_AMP_GET_RIGHT | dir | i);
180 			snd_iprintf(buffer, " 0x%02x", val);
181 		}
182 		snd_iprintf(buffer, "]");
183 	}
184 	snd_iprintf(buffer, "\n");
185 }
186 
187 static void print_pcm_rates(struct snd_info_buffer *buffer, unsigned int pcm)
188 {
189 	static unsigned int rates[] = {
190 		8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
191 		96000, 176400, 192000, 384000
192 	};
193 	int i;
194 
195 	pcm &= AC_SUPPCM_RATES;
196 	snd_iprintf(buffer, "    rates [0x%x]:", pcm);
197 	for (i = 0; i < ARRAY_SIZE(rates); i++)
198 		if (pcm & (1 << i))
199 			snd_iprintf(buffer,  " %d", rates[i]);
200 	snd_iprintf(buffer, "\n");
201 }
202 
203 static void print_pcm_bits(struct snd_info_buffer *buffer, unsigned int pcm)
204 {
205 	char buf[SND_PRINT_BITS_ADVISED_BUFSIZE];
206 
207 	snd_iprintf(buffer, "    bits [0x%x]:", (pcm >> 16) & 0xff);
208 	snd_print_pcm_bits(pcm, buf, sizeof(buf));
209 	snd_iprintf(buffer, "%s\n", buf);
210 }
211 
212 static void print_pcm_formats(struct snd_info_buffer *buffer,
213 			      unsigned int streams)
214 {
215 	snd_iprintf(buffer, "    formats [0x%x]:", streams & 0xf);
216 	if (streams & AC_SUPFMT_PCM)
217 		snd_iprintf(buffer, " PCM");
218 	if (streams & AC_SUPFMT_FLOAT32)
219 		snd_iprintf(buffer, " FLOAT");
220 	if (streams & AC_SUPFMT_AC3)
221 		snd_iprintf(buffer, " AC3");
222 	snd_iprintf(buffer, "\n");
223 }
224 
225 static void print_pcm_caps(struct snd_info_buffer *buffer,
226 			   struct hda_codec *codec, hda_nid_t nid)
227 {
228 	unsigned int pcm = snd_hda_param_read(codec, nid, AC_PAR_PCM);
229 	unsigned int stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
230 	if (pcm == -1 || stream == -1) {
231 		snd_iprintf(buffer, "N/A\n");
232 		return;
233 	}
234 	print_pcm_rates(buffer, pcm);
235 	print_pcm_bits(buffer, pcm);
236 	print_pcm_formats(buffer, stream);
237 }
238 
239 static const char *get_jack_connection(u32 cfg)
240 {
241 	static char *names[16] = {
242 		"Unknown", "1/8", "1/4", "ATAPI",
243 		"RCA", "Optical","Digital", "Analog",
244 		"DIN", "XLR", "RJ11", "Comb",
245 		NULL, NULL, NULL, "Other"
246 	};
247 	cfg = (cfg & AC_DEFCFG_CONN_TYPE) >> AC_DEFCFG_CONN_TYPE_SHIFT;
248 	if (names[cfg])
249 		return names[cfg];
250 	else
251 		return "UNKNOWN";
252 }
253 
254 static const char *get_jack_color(u32 cfg)
255 {
256 	static char *names[16] = {
257 		"Unknown", "Black", "Grey", "Blue",
258 		"Green", "Red", "Orange", "Yellow",
259 		"Purple", "Pink", NULL, NULL,
260 		NULL, NULL, "White", "Other",
261 	};
262 	cfg = (cfg & AC_DEFCFG_COLOR) >> AC_DEFCFG_COLOR_SHIFT;
263 	if (names[cfg])
264 		return names[cfg];
265 	else
266 		return "UNKNOWN";
267 }
268 
269 static void print_pin_caps(struct snd_info_buffer *buffer,
270 			   struct hda_codec *codec, hda_nid_t nid,
271 			   int *supports_vref)
272 {
273 	static char *jack_conns[4] = { "Jack", "N/A", "Fixed", "Both" };
274 	unsigned int caps, val;
275 
276 	caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
277 	snd_iprintf(buffer, "  Pincap 0x%08x:", caps);
278 	if (caps & AC_PINCAP_IN)
279 		snd_iprintf(buffer, " IN");
280 	if (caps & AC_PINCAP_OUT)
281 		snd_iprintf(buffer, " OUT");
282 	if (caps & AC_PINCAP_HP_DRV)
283 		snd_iprintf(buffer, " HP");
284 	if (caps & AC_PINCAP_EAPD)
285 		snd_iprintf(buffer, " EAPD");
286 	if (caps & AC_PINCAP_PRES_DETECT)
287 		snd_iprintf(buffer, " Detect");
288 	if (caps & AC_PINCAP_BALANCE)
289 		snd_iprintf(buffer, " Balanced");
290 	if (caps & AC_PINCAP_HDMI) {
291 		/* Realtek uses this bit as a different meaning */
292 		if ((codec->vendor_id >> 16) == 0x10ec)
293 			snd_iprintf(buffer, " R/L");
294 		else {
295 			if (caps & AC_PINCAP_HBR)
296 				snd_iprintf(buffer, " HBR");
297 			snd_iprintf(buffer, " HDMI");
298 		}
299 	}
300 	if (caps & AC_PINCAP_DP)
301 		snd_iprintf(buffer, " DP");
302 	if (caps & AC_PINCAP_TRIG_REQ)
303 		snd_iprintf(buffer, " Trigger");
304 	if (caps & AC_PINCAP_IMP_SENSE)
305 		snd_iprintf(buffer, " ImpSense");
306 	snd_iprintf(buffer, "\n");
307 	if (caps & AC_PINCAP_VREF) {
308 		unsigned int vref =
309 			(caps & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
310 		snd_iprintf(buffer, "    Vref caps:");
311 		if (vref & AC_PINCAP_VREF_HIZ)
312 			snd_iprintf(buffer, " HIZ");
313 		if (vref & AC_PINCAP_VREF_50)
314 			snd_iprintf(buffer, " 50");
315 		if (vref & AC_PINCAP_VREF_GRD)
316 			snd_iprintf(buffer, " GRD");
317 		if (vref & AC_PINCAP_VREF_80)
318 			snd_iprintf(buffer, " 80");
319 		if (vref & AC_PINCAP_VREF_100)
320 			snd_iprintf(buffer, " 100");
321 		snd_iprintf(buffer, "\n");
322 		*supports_vref = 1;
323 	} else
324 		*supports_vref = 0;
325 	if (caps & AC_PINCAP_EAPD) {
326 		val = snd_hda_codec_read(codec, nid, 0,
327 					 AC_VERB_GET_EAPD_BTLENABLE, 0);
328 		snd_iprintf(buffer, "  EAPD 0x%x:", val);
329 		if (val & AC_EAPDBTL_BALANCED)
330 			snd_iprintf(buffer, " BALANCED");
331 		if (val & AC_EAPDBTL_EAPD)
332 			snd_iprintf(buffer, " EAPD");
333 		if (val & AC_EAPDBTL_LR_SWAP)
334 			snd_iprintf(buffer, " R/L");
335 		snd_iprintf(buffer, "\n");
336 	}
337 	caps = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
338 	snd_iprintf(buffer, "  Pin Default 0x%08x: [%s] %s at %s %s\n", caps,
339 		    jack_conns[(caps & AC_DEFCFG_PORT_CONN) >> AC_DEFCFG_PORT_CONN_SHIFT],
340 		    snd_hda_get_jack_type(caps),
341 		    snd_hda_get_jack_connectivity(caps),
342 		    snd_hda_get_jack_location(caps));
343 	snd_iprintf(buffer, "    Conn = %s, Color = %s\n",
344 		    get_jack_connection(caps),
345 		    get_jack_color(caps));
346 	/* Default association and sequence values refer to default grouping
347 	 * of pin complexes and their sequence within the group. This is used
348 	 * for priority and resource allocation.
349 	 */
350 	snd_iprintf(buffer, "    DefAssociation = 0x%x, Sequence = 0x%x\n",
351 		    (caps & AC_DEFCFG_DEF_ASSOC) >> AC_DEFCFG_ASSOC_SHIFT,
352 		    caps & AC_DEFCFG_SEQUENCE);
353 	if (((caps & AC_DEFCFG_MISC) >> AC_DEFCFG_MISC_SHIFT) &
354 	    AC_DEFCFG_MISC_NO_PRESENCE) {
355 		/* Miscellaneous bit indicates external hardware does not
356 		 * support presence detection even if the pin complex
357 		 * indicates it is supported.
358 		 */
359 		snd_iprintf(buffer, "    Misc = NO_PRESENCE\n");
360 	}
361 }
362 
363 static void print_pin_ctls(struct snd_info_buffer *buffer,
364 			   struct hda_codec *codec, hda_nid_t nid,
365 			   int supports_vref)
366 {
367 	unsigned int pinctls;
368 
369 	pinctls = snd_hda_codec_read(codec, nid, 0,
370 				     AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
371 	snd_iprintf(buffer, "  Pin-ctls: 0x%02x:", pinctls);
372 	if (pinctls & AC_PINCTL_IN_EN)
373 		snd_iprintf(buffer, " IN");
374 	if (pinctls & AC_PINCTL_OUT_EN)
375 		snd_iprintf(buffer, " OUT");
376 	if (pinctls & AC_PINCTL_HP_EN)
377 		snd_iprintf(buffer, " HP");
378 	if (supports_vref) {
379 		int vref = pinctls & AC_PINCTL_VREFEN;
380 		switch (vref) {
381 		case AC_PINCTL_VREF_HIZ:
382 			snd_iprintf(buffer, " VREF_HIZ");
383 			break;
384 		case AC_PINCTL_VREF_50:
385 			snd_iprintf(buffer, " VREF_50");
386 			break;
387 		case AC_PINCTL_VREF_GRD:
388 			snd_iprintf(buffer, " VREF_GRD");
389 			break;
390 		case AC_PINCTL_VREF_80:
391 			snd_iprintf(buffer, " VREF_80");
392 			break;
393 		case AC_PINCTL_VREF_100:
394 			snd_iprintf(buffer, " VREF_100");
395 			break;
396 		}
397 	}
398 	snd_iprintf(buffer, "\n");
399 }
400 
401 static void print_vol_knob(struct snd_info_buffer *buffer,
402 			   struct hda_codec *codec, hda_nid_t nid)
403 {
404 	unsigned int cap = snd_hda_param_read(codec, nid,
405 					      AC_PAR_VOL_KNB_CAP);
406 	snd_iprintf(buffer, "  Volume-Knob: delta=%d, steps=%d, ",
407 		    (cap >> 7) & 1, cap & 0x7f);
408 	cap = snd_hda_codec_read(codec, nid, 0,
409 				 AC_VERB_GET_VOLUME_KNOB_CONTROL, 0);
410 	snd_iprintf(buffer, "direct=%d, val=%d\n",
411 		    (cap >> 7) & 1, cap & 0x7f);
412 }
413 
414 static void print_audio_io(struct snd_info_buffer *buffer,
415 			   struct hda_codec *codec, hda_nid_t nid,
416 			   unsigned int wid_type)
417 {
418 	int conv = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
419 	snd_iprintf(buffer,
420 		    "  Converter: stream=%d, channel=%d\n",
421 		    (conv & AC_CONV_STREAM) >> AC_CONV_STREAM_SHIFT,
422 		    conv & AC_CONV_CHANNEL);
423 
424 	if (wid_type == AC_WID_AUD_IN && (conv & AC_CONV_CHANNEL) == 0) {
425 		int sdi = snd_hda_codec_read(codec, nid, 0,
426 					     AC_VERB_GET_SDI_SELECT, 0);
427 		snd_iprintf(buffer, "  SDI-Select: %d\n",
428 			    sdi & AC_SDI_SELECT);
429 	}
430 }
431 
432 static void print_digital_conv(struct snd_info_buffer *buffer,
433 			       struct hda_codec *codec, hda_nid_t nid)
434 {
435 	unsigned int digi1 = snd_hda_codec_read(codec, nid, 0,
436 						AC_VERB_GET_DIGI_CONVERT_1, 0);
437 	unsigned char digi2 = digi1 >> 8;
438 	unsigned char digi3 = digi1 >> 16;
439 
440 	snd_iprintf(buffer, "  Digital:");
441 	if (digi1 & AC_DIG1_ENABLE)
442 		snd_iprintf(buffer, " Enabled");
443 	if (digi1 & AC_DIG1_V)
444 		snd_iprintf(buffer, " Validity");
445 	if (digi1 & AC_DIG1_VCFG)
446 		snd_iprintf(buffer, " ValidityCfg");
447 	if (digi1 & AC_DIG1_EMPHASIS)
448 		snd_iprintf(buffer, " Preemphasis");
449 	if (digi1 & AC_DIG1_COPYRIGHT)
450 		snd_iprintf(buffer, " Non-Copyright");
451 	if (digi1 & AC_DIG1_NONAUDIO)
452 		snd_iprintf(buffer, " Non-Audio");
453 	if (digi1 & AC_DIG1_PROFESSIONAL)
454 		snd_iprintf(buffer, " Pro");
455 	if (digi1 & AC_DIG1_LEVEL)
456 		snd_iprintf(buffer, " GenLevel");
457 	if (digi3 & AC_DIG3_KAE)
458 		snd_iprintf(buffer, " KAE");
459 	snd_iprintf(buffer, "\n");
460 	snd_iprintf(buffer, "  Digital category: 0x%x\n",
461 		    digi2 & AC_DIG2_CC);
462 	snd_iprintf(buffer, "  IEC Coding Type: 0x%x\n",
463 			digi3 & AC_DIG3_ICT);
464 }
465 
466 static const char *get_pwr_state(u32 state)
467 {
468 	static const char * const buf[] = {
469 		"D0", "D1", "D2", "D3", "D3cold"
470 	};
471 	if (state < ARRAY_SIZE(buf))
472 		return buf[state];
473 	return "UNKNOWN";
474 }
475 
476 static void print_power_state(struct snd_info_buffer *buffer,
477 			      struct hda_codec *codec, hda_nid_t nid)
478 {
479 	static char *names[] = {
480 		[ilog2(AC_PWRST_D0SUP)]		= "D0",
481 		[ilog2(AC_PWRST_D1SUP)]		= "D1",
482 		[ilog2(AC_PWRST_D2SUP)]		= "D2",
483 		[ilog2(AC_PWRST_D3SUP)]		= "D3",
484 		[ilog2(AC_PWRST_D3COLDSUP)]	= "D3cold",
485 		[ilog2(AC_PWRST_S3D3COLDSUP)]	= "S3D3cold",
486 		[ilog2(AC_PWRST_CLKSTOP)]	= "CLKSTOP",
487 		[ilog2(AC_PWRST_EPSS)]		= "EPSS",
488 	};
489 
490 	int sup = snd_hda_param_read(codec, nid, AC_PAR_POWER_STATE);
491 	int pwr = snd_hda_codec_read(codec, nid, 0,
492 				     AC_VERB_GET_POWER_STATE, 0);
493 	if (sup != -1)
494 		snd_iprintf(buffer, "  Power states: %s\n",
495 			    bits_names(sup, names, ARRAY_SIZE(names)));
496 
497 	snd_iprintf(buffer, "  Power: setting=%s, actual=%s",
498 		    get_pwr_state(pwr & AC_PWRST_SETTING),
499 		    get_pwr_state((pwr & AC_PWRST_ACTUAL) >>
500 				  AC_PWRST_ACTUAL_SHIFT));
501 	if (pwr & AC_PWRST_ERROR)
502 		snd_iprintf(buffer, ", Error");
503 	if (pwr & AC_PWRST_CLK_STOP_OK)
504 		snd_iprintf(buffer, ", Clock-stop-OK");
505 	if (pwr & AC_PWRST_SETTING_RESET)
506 		snd_iprintf(buffer, ", Setting-reset");
507 	snd_iprintf(buffer, "\n");
508 }
509 
510 static void print_unsol_cap(struct snd_info_buffer *buffer,
511 			      struct hda_codec *codec, hda_nid_t nid)
512 {
513 	int unsol = snd_hda_codec_read(codec, nid, 0,
514 				       AC_VERB_GET_UNSOLICITED_RESPONSE, 0);
515 	snd_iprintf(buffer,
516 		    "  Unsolicited: tag=%02x, enabled=%d\n",
517 		    unsol & AC_UNSOL_TAG,
518 		    (unsol & AC_UNSOL_ENABLED) ? 1 : 0);
519 }
520 
521 static inline bool can_dump_coef(struct hda_codec *codec)
522 {
523 	switch (dump_coef) {
524 	case 0: return false;
525 	case 1: return true;
526 	default: return codec->dump_coef;
527 	}
528 }
529 
530 static void print_proc_caps(struct snd_info_buffer *buffer,
531 			    struct hda_codec *codec, hda_nid_t nid)
532 {
533 	unsigned int i, ncoeff, oldindex;
534 	unsigned int proc_caps = snd_hda_param_read(codec, nid,
535 						    AC_PAR_PROC_CAP);
536 	ncoeff = (proc_caps & AC_PCAP_NUM_COEF) >> AC_PCAP_NUM_COEF_SHIFT;
537 	snd_iprintf(buffer, "  Processing caps: benign=%d, ncoeff=%d\n",
538 		    proc_caps & AC_PCAP_BENIGN, ncoeff);
539 
540 	if (!can_dump_coef(codec))
541 		return;
542 
543 	/* Note: This is racy - another process could run in parallel and change
544 	   the coef index too. */
545 	oldindex = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_COEF_INDEX, 0);
546 	for (i = 0; i < ncoeff; i++) {
547 		unsigned int val;
548 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_COEF_INDEX, i);
549 		val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_PROC_COEF,
550 					 0);
551 		snd_iprintf(buffer, "    Coeff 0x%02x: 0x%04x\n", i, val);
552 	}
553 	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_COEF_INDEX, oldindex);
554 }
555 
556 static void print_conn_list(struct snd_info_buffer *buffer,
557 			    struct hda_codec *codec, hda_nid_t nid,
558 			    unsigned int wid_type, hda_nid_t *conn,
559 			    int conn_len)
560 {
561 	int c, curr = -1;
562 	const hda_nid_t *list;
563 	int cache_len;
564 
565 	if (conn_len > 1 &&
566 	    wid_type != AC_WID_AUD_MIX &&
567 	    wid_type != AC_WID_VOL_KNB &&
568 	    wid_type != AC_WID_POWER)
569 		curr = snd_hda_codec_read(codec, nid, 0,
570 					  AC_VERB_GET_CONNECT_SEL, 0);
571 	snd_iprintf(buffer, "  Connection: %d\n", conn_len);
572 	if (conn_len > 0) {
573 		snd_iprintf(buffer, "    ");
574 		for (c = 0; c < conn_len; c++) {
575 			snd_iprintf(buffer, " 0x%02x", conn[c]);
576 			if (c == curr)
577 				snd_iprintf(buffer, "*");
578 		}
579 		snd_iprintf(buffer, "\n");
580 	}
581 
582 	/* Get Cache connections info */
583 	cache_len = snd_hda_get_conn_list(codec, nid, &list);
584 	if (cache_len != conn_len
585 			|| memcmp(list, conn, conn_len)) {
586 		snd_iprintf(buffer, "  In-driver Connection: %d\n", cache_len);
587 		if (cache_len > 0) {
588 			snd_iprintf(buffer, "    ");
589 			for (c = 0; c < cache_len; c++)
590 				snd_iprintf(buffer, " 0x%02x", list[c]);
591 			snd_iprintf(buffer, "\n");
592 		}
593 	}
594 }
595 
596 static void print_gpio(struct snd_info_buffer *buffer,
597 		       struct hda_codec *codec, hda_nid_t nid)
598 {
599 	unsigned int gpio =
600 		snd_hda_param_read(codec, codec->afg, AC_PAR_GPIO_CAP);
601 	unsigned int enable, direction, wake, unsol, sticky, data;
602 	int i, max;
603 	snd_iprintf(buffer, "GPIO: io=%d, o=%d, i=%d, "
604 		    "unsolicited=%d, wake=%d\n",
605 		    gpio & AC_GPIO_IO_COUNT,
606 		    (gpio & AC_GPIO_O_COUNT) >> AC_GPIO_O_COUNT_SHIFT,
607 		    (gpio & AC_GPIO_I_COUNT) >> AC_GPIO_I_COUNT_SHIFT,
608 		    (gpio & AC_GPIO_UNSOLICITED) ? 1 : 0,
609 		    (gpio & AC_GPIO_WAKE) ? 1 : 0);
610 	max = gpio & AC_GPIO_IO_COUNT;
611 	if (!max || max > 8)
612 		return;
613 	enable = snd_hda_codec_read(codec, nid, 0,
614 				    AC_VERB_GET_GPIO_MASK, 0);
615 	direction = snd_hda_codec_read(codec, nid, 0,
616 				       AC_VERB_GET_GPIO_DIRECTION, 0);
617 	wake = snd_hda_codec_read(codec, nid, 0,
618 				  AC_VERB_GET_GPIO_WAKE_MASK, 0);
619 	unsol  = snd_hda_codec_read(codec, nid, 0,
620 				    AC_VERB_GET_GPIO_UNSOLICITED_RSP_MASK, 0);
621 	sticky = snd_hda_codec_read(codec, nid, 0,
622 				    AC_VERB_GET_GPIO_STICKY_MASK, 0);
623 	data = snd_hda_codec_read(codec, nid, 0,
624 				  AC_VERB_GET_GPIO_DATA, 0);
625 	for (i = 0; i < max; ++i)
626 		snd_iprintf(buffer,
627 			    "  IO[%d]: enable=%d, dir=%d, wake=%d, "
628 			    "sticky=%d, data=%d, unsol=%d\n", i,
629 			    (enable & (1<<i)) ? 1 : 0,
630 			    (direction & (1<<i)) ? 1 : 0,
631 			    (wake & (1<<i)) ? 1 : 0,
632 			    (sticky & (1<<i)) ? 1 : 0,
633 			    (data & (1<<i)) ? 1 : 0,
634 			    (unsol & (1<<i)) ? 1 : 0);
635 	/* FIXME: add GPO and GPI pin information */
636 	print_nid_array(buffer, codec, nid, &codec->mixers);
637 	print_nid_array(buffer, codec, nid, &codec->nids);
638 }
639 
640 static void print_device_list(struct snd_info_buffer *buffer,
641 			    struct hda_codec *codec, hda_nid_t nid)
642 {
643 	int i, curr = -1;
644 	u8 dev_list[AC_MAX_DEV_LIST_LEN];
645 	int devlist_len;
646 
647 	devlist_len = snd_hda_get_devices(codec, nid, dev_list,
648 					AC_MAX_DEV_LIST_LEN);
649 	snd_iprintf(buffer, "  Devices: %d\n", devlist_len);
650 	if (devlist_len <= 0)
651 		return;
652 
653 	curr = snd_hda_codec_read(codec, nid, 0,
654 				AC_VERB_GET_DEVICE_SEL, 0);
655 
656 	for (i = 0; i < devlist_len; i++) {
657 		if (i == curr)
658 			snd_iprintf(buffer, "    *");
659 		else
660 			snd_iprintf(buffer, "     ");
661 
662 		snd_iprintf(buffer,
663 			"Dev %02d: PD = %d, ELDV = %d, IA = %d\n", i,
664 			!!(dev_list[i] & AC_DE_PD),
665 			!!(dev_list[i] & AC_DE_ELDV),
666 			!!(dev_list[i] & AC_DE_IA));
667 	}
668 }
669 
670 static void print_codec_info(struct snd_info_entry *entry,
671 			     struct snd_info_buffer *buffer)
672 {
673 	struct hda_codec *codec = entry->private_data;
674 	hda_nid_t nid;
675 	int i, nodes;
676 
677 	snd_iprintf(buffer, "Codec: ");
678 	if (codec->vendor_name && codec->chip_name)
679 		snd_iprintf(buffer, "%s %s\n",
680 			    codec->vendor_name, codec->chip_name);
681 	else
682 		snd_iprintf(buffer, "Not Set\n");
683 	snd_iprintf(buffer, "Address: %d\n", codec->addr);
684 	if (codec->afg)
685 		snd_iprintf(buffer, "AFG Function Id: 0x%x (unsol %u)\n",
686 			codec->afg_function_id, codec->afg_unsol);
687 	if (codec->mfg)
688 		snd_iprintf(buffer, "MFG Function Id: 0x%x (unsol %u)\n",
689 			codec->mfg_function_id, codec->mfg_unsol);
690 	snd_iprintf(buffer, "Vendor Id: 0x%08x\n", codec->vendor_id);
691 	snd_iprintf(buffer, "Subsystem Id: 0x%08x\n", codec->subsystem_id);
692 	snd_iprintf(buffer, "Revision Id: 0x%x\n", codec->revision_id);
693 
694 	if (codec->mfg)
695 		snd_iprintf(buffer, "Modem Function Group: 0x%x\n", codec->mfg);
696 	else
697 		snd_iprintf(buffer, "No Modem Function Group found\n");
698 
699 	if (! codec->afg)
700 		return;
701 	snd_hda_power_up(codec);
702 	snd_iprintf(buffer, "Default PCM:\n");
703 	print_pcm_caps(buffer, codec, codec->afg);
704 	snd_iprintf(buffer, "Default Amp-In caps: ");
705 	print_amp_caps(buffer, codec, codec->afg, HDA_INPUT);
706 	snd_iprintf(buffer, "Default Amp-Out caps: ");
707 	print_amp_caps(buffer, codec, codec->afg, HDA_OUTPUT);
708 	snd_iprintf(buffer, "State of AFG node 0x%02x:\n", codec->afg);
709 	print_power_state(buffer, codec, codec->afg);
710 
711 	nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
712 	if (! nid || nodes < 0) {
713 		snd_iprintf(buffer, "Invalid AFG subtree\n");
714 		snd_hda_power_down(codec);
715 		return;
716 	}
717 
718 	print_gpio(buffer, codec, codec->afg);
719 	if (codec->proc_widget_hook)
720 		codec->proc_widget_hook(buffer, codec, codec->afg);
721 
722 	for (i = 0; i < nodes; i++, nid++) {
723 		unsigned int wid_caps =
724 			snd_hda_param_read(codec, nid,
725 					   AC_PAR_AUDIO_WIDGET_CAP);
726 		unsigned int wid_type = get_wcaps_type(wid_caps);
727 		hda_nid_t *conn = NULL;
728 		int conn_len = 0;
729 
730 		snd_iprintf(buffer, "Node 0x%02x [%s] wcaps 0x%x:", nid,
731 			    get_wid_type_name(wid_type), wid_caps);
732 		if (wid_caps & AC_WCAP_STEREO) {
733 			unsigned int chans = get_wcaps_channels(wid_caps);
734 			if (chans == 2)
735 				snd_iprintf(buffer, " Stereo");
736 			else
737 				snd_iprintf(buffer, " %d-Channels", chans);
738 		} else
739 			snd_iprintf(buffer, " Mono");
740 		if (wid_caps & AC_WCAP_DIGITAL)
741 			snd_iprintf(buffer, " Digital");
742 		if (wid_caps & AC_WCAP_IN_AMP)
743 			snd_iprintf(buffer, " Amp-In");
744 		if (wid_caps & AC_WCAP_OUT_AMP)
745 			snd_iprintf(buffer, " Amp-Out");
746 		if (wid_caps & AC_WCAP_STRIPE)
747 			snd_iprintf(buffer, " Stripe");
748 		if (wid_caps & AC_WCAP_LR_SWAP)
749 			snd_iprintf(buffer, " R/L");
750 		if (wid_caps & AC_WCAP_CP_CAPS)
751 			snd_iprintf(buffer, " CP");
752 		snd_iprintf(buffer, "\n");
753 
754 		print_nid_array(buffer, codec, nid, &codec->mixers);
755 		print_nid_array(buffer, codec, nid, &codec->nids);
756 		print_nid_pcms(buffer, codec, nid);
757 
758 		/* volume knob is a special widget that always have connection
759 		 * list
760 		 */
761 		if (wid_type == AC_WID_VOL_KNB)
762 			wid_caps |= AC_WCAP_CONN_LIST;
763 
764 		if (wid_caps & AC_WCAP_CONN_LIST) {
765 			conn_len = snd_hda_get_num_raw_conns(codec, nid);
766 			if (conn_len > 0) {
767 				conn = kmalloc(sizeof(hda_nid_t) * conn_len,
768 					       GFP_KERNEL);
769 				if (!conn)
770 					return;
771 				if (snd_hda_get_raw_connections(codec, nid, conn,
772 								conn_len) < 0)
773 					conn_len = 0;
774 			}
775 		}
776 
777 		if (wid_caps & AC_WCAP_IN_AMP) {
778 			snd_iprintf(buffer, "  Amp-In caps: ");
779 			print_amp_caps(buffer, codec, nid, HDA_INPUT);
780 			snd_iprintf(buffer, "  Amp-In vals: ");
781 			if (wid_type == AC_WID_PIN ||
782 			    (codec->single_adc_amp &&
783 			     wid_type == AC_WID_AUD_IN))
784 				print_amp_vals(buffer, codec, nid, HDA_INPUT,
785 					       wid_caps, 1);
786 			else
787 				print_amp_vals(buffer, codec, nid, HDA_INPUT,
788 					       wid_caps, conn_len);
789 		}
790 		if (wid_caps & AC_WCAP_OUT_AMP) {
791 			snd_iprintf(buffer, "  Amp-Out caps: ");
792 			print_amp_caps(buffer, codec, nid, HDA_OUTPUT);
793 			snd_iprintf(buffer, "  Amp-Out vals: ");
794 			if (wid_type == AC_WID_PIN &&
795 			    codec->pin_amp_workaround)
796 				print_amp_vals(buffer, codec, nid, HDA_OUTPUT,
797 					       wid_caps, conn_len);
798 			else
799 				print_amp_vals(buffer, codec, nid, HDA_OUTPUT,
800 					       wid_caps, 1);
801 		}
802 
803 		switch (wid_type) {
804 		case AC_WID_PIN: {
805 			int supports_vref;
806 			print_pin_caps(buffer, codec, nid, &supports_vref);
807 			print_pin_ctls(buffer, codec, nid, supports_vref);
808 			break;
809 		}
810 		case AC_WID_VOL_KNB:
811 			print_vol_knob(buffer, codec, nid);
812 			break;
813 		case AC_WID_AUD_OUT:
814 		case AC_WID_AUD_IN:
815 			print_audio_io(buffer, codec, nid, wid_type);
816 			if (wid_caps & AC_WCAP_DIGITAL)
817 				print_digital_conv(buffer, codec, nid);
818 			if (wid_caps & AC_WCAP_FORMAT_OVRD) {
819 				snd_iprintf(buffer, "  PCM:\n");
820 				print_pcm_caps(buffer, codec, nid);
821 			}
822 			break;
823 		}
824 
825 		if (wid_caps & AC_WCAP_UNSOL_CAP)
826 			print_unsol_cap(buffer, codec, nid);
827 
828 		if (wid_caps & AC_WCAP_POWER)
829 			print_power_state(buffer, codec, nid);
830 
831 		if (wid_caps & AC_WCAP_DELAY)
832 			snd_iprintf(buffer, "  Delay: %d samples\n",
833 				    (wid_caps & AC_WCAP_DELAY) >>
834 				    AC_WCAP_DELAY_SHIFT);
835 
836 		if (wid_type == AC_WID_PIN && codec->dp_mst)
837 			print_device_list(buffer, codec, nid);
838 
839 		if (wid_caps & AC_WCAP_CONN_LIST)
840 			print_conn_list(buffer, codec, nid, wid_type,
841 					conn, conn_len);
842 
843 		if (wid_caps & AC_WCAP_PROC_WID)
844 			print_proc_caps(buffer, codec, nid);
845 
846 		if (codec->proc_widget_hook)
847 			codec->proc_widget_hook(buffer, codec, nid);
848 
849 		kfree(conn);
850 	}
851 	snd_hda_power_down(codec);
852 }
853 
854 /*
855  * create a proc read
856  */
857 int snd_hda_codec_proc_new(struct hda_codec *codec)
858 {
859 	char name[32];
860 	struct snd_info_entry *entry;
861 	int err;
862 
863 	snprintf(name, sizeof(name), "codec#%d", codec->addr);
864 	err = snd_card_proc_new(codec->bus->card, name, &entry);
865 	if (err < 0)
866 		return err;
867 
868 	snd_info_set_text_ops(entry, codec, print_codec_info);
869 	return 0;
870 }
871 
872