sound/pci/hda/hda_proc.c - kernel/msm-4.9 - Gitiles

 /*
  * Universal Interface for Intel High Definition Audio Codec
  *
  * Generic proc interface
  *
  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
  *
  *
  *  This driver is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This driver is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */

 #include <sound/driver.h>
 #include <linux/init.h>
 #include <sound/core.h>
 #include "hda_codec.h"
 #include "hda_local.h"

 static const char *get_wid_type_name(unsigned int wid_value)
 {
 	static char *names[16] = {
 		[AC_WID_AUD_OUT] = "Audio Output",
 		[AC_WID_AUD_IN] = "Audio Input",
 		[AC_WID_AUD_MIX] = "Audio Mixer",
 		[AC_WID_AUD_SEL] = "Audio Selector",
 		[AC_WID_PIN] = "Pin Complex",
 		[AC_WID_POWER] = "Power Widget",
 		[AC_WID_VOL_KNB] = "Volume Knob Widget",
 		[AC_WID_BEEP] = "Beep Generator Widget",
 		[AC_WID_VENDOR] = "Vendor Defined Widget",
 	};
 	wid_value &= 0xf;
 	if (names[wid_value])
 		return names[wid_value];
 	else
 		return "UNKNOWN Widget";
 }

 static void print_amp_caps(struct snd_info_buffer *buffer,
 			   struct hda_codec *codec, hda_nid_t nid, int dir)
 {
 	unsigned int caps;
 	caps = snd_hda_param_read(codec, nid,
 				  dir == HDA_OUTPUT ?
 				    AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
 	if (caps == -1 || caps == 0) {
 		snd_iprintf(buffer, "N/A\n");
 		return;
 	}
 	snd_iprintf(buffer, "ofs=0x%02x, nsteps=0x%02x, stepsize=0x%02x, "
 		    "mute=%x\n",
 		    caps & AC_AMPCAP_OFFSET,
 		    (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT,
 		    (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT,
 		    (caps & AC_AMPCAP_MUTE) >> AC_AMPCAP_MUTE_SHIFT);
 }

 static void print_amp_vals(struct snd_info_buffer *buffer,
 			   struct hda_codec *codec, hda_nid_t nid,
 			   int dir, int stereo, int indices)
 {
 	unsigned int val;
 	int i;

 	dir = dir == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
 	for (i = 0; i < indices; i++) {
 		snd_iprintf(buffer, " [");
 		if (stereo) {
 			val = snd_hda_codec_read(codec, nid, 0,
 						 AC_VERB_GET_AMP_GAIN_MUTE,
 						 AC_AMP_GET_LEFT | dir | i);
 			snd_iprintf(buffer, "0x%02x ", val);
 		}
 		val = snd_hda_codec_read(codec, nid, 0,
 					 AC_VERB_GET_AMP_GAIN_MUTE,
 					 AC_AMP_GET_RIGHT | dir | i);
 		snd_iprintf(buffer, "0x%02x]", val);
 	}
 	snd_iprintf(buffer, "\n");
 }

 static void print_pcm_rates(struct snd_info_buffer *buffer, unsigned int pcm)
 {
 	static unsigned int rates[] = {
 		8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
 		96000, 176400, 192000, 384000
 	};
 	int i;

 	pcm &= AC_SUPPCM_RATES;
 	snd_iprintf(buffer, "    rates [0x%x]:", pcm);
 	for (i = 0; i < ARRAY_SIZE(rates); i++)
 		if (pcm & (1 << i))
 			snd_iprintf(buffer, " %d", rates[i]);
 	snd_iprintf(buffer, "\n");
 }

 static void print_pcm_bits(struct snd_info_buffer *buffer, unsigned int pcm)
 {
 	static unsigned int bits[] = { 8, 16, 20, 24, 32 };
 	int i;

 	pcm = (pcm >> 16) & 0xff;
 	snd_iprintf(buffer, "    bits [0x%x]:", pcm);
 	for (i = 0; i < ARRAY_SIZE(bits); i++)
 		if (pcm & (1 << i))
 			snd_iprintf(buffer, " %d", bits[i]);
 	snd_iprintf(buffer, "\n");
 }

 static void print_pcm_formats(struct snd_info_buffer *buffer,
 			      unsigned int streams)
 {
 	snd_iprintf(buffer, "    formats [0x%x]:", streams & 0xf);
 	if (streams & AC_SUPFMT_PCM)
 		snd_iprintf(buffer, " PCM");
 	if (streams & AC_SUPFMT_FLOAT32)
 		snd_iprintf(buffer, " FLOAT");
 	if (streams & AC_SUPFMT_AC3)
 		snd_iprintf(buffer, " AC3");
 	snd_iprintf(buffer, "\n");
 }

 static void print_pcm_caps(struct snd_info_buffer *buffer,
 			   struct hda_codec *codec, hda_nid_t nid)
 {
 	unsigned int pcm = snd_hda_param_read(codec, nid, AC_PAR_PCM);
 	unsigned int stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
 	if (pcm == -1 || stream == -1) {
 		snd_iprintf(buffer, "N/A\n");
 		return;
 	}
 	print_pcm_rates(buffer, pcm);
 	print_pcm_bits(buffer, pcm);
 	print_pcm_formats(buffer, stream);
 }

 static const char *get_jack_location(u32 cfg)
 {
 	static char *bases[7] = {
 		"N/A", "Rear", "Front", "Left", "Right", "Top", "Bottom",
 	};
 	static unsigned char specials_idx[] = {
 		0x07, 0x08,
 		0x17, 0x18, 0x19,
 		0x37, 0x38
 	};
 	static char *specials[] = {
 		"Rear Panel", "Drive Bar",
 		"Riser", "HDMI", "ATAPI",
 		"Mobile-In", "Mobile-Out"
 	};
 	int i;
 	cfg = (cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT;
 	if ((cfg & 0x0f) < 7)
 		return bases[cfg & 0x0f];
 	for (i = 0; i < ARRAY_SIZE(specials_idx); i++) {
 		if (cfg == specials_idx[i])
 			return specials[i];
 	}
 	return "UNKNOWN";
 }

 static const char *get_jack_connection(u32 cfg)
 {
 	static char *names[16] = {
 		"Unknown", "1/8", "1/4", "ATAPI",
 		"RCA", "Optical","Digital", "Analog",
 		"DIN", "XLR", "RJ11", "Comb",
 		NULL, NULL, NULL, "Other"
 	};
 	cfg = (cfg & AC_DEFCFG_CONN_TYPE) >> AC_DEFCFG_CONN_TYPE_SHIFT;
 	if (names[cfg])
 		return names[cfg];
 	else
 		return "UNKNOWN";
 }

 static const char *get_jack_color(u32 cfg)
 {
 	static char *names[16] = {
 		"Unknown", "Black", "Grey", "Blue",
 		"Green", "Red", "Orange", "Yellow",
 		"Purple", "Pink", NULL, NULL,
 		NULL, NULL, "White", "Other",
 	};
 	cfg = (cfg & AC_DEFCFG_COLOR) >> AC_DEFCFG_COLOR_SHIFT;
 	if (names[cfg])
 		return names[cfg];
 	else
 		return "UNKNOWN";
 }

 static void print_pin_caps(struct snd_info_buffer *buffer,
 			   struct hda_codec *codec, hda_nid_t nid)
 {
 	static char *jack_conns[4] = { "Jack", "N/A", "Fixed", "Both" };
 	static char *jack_types[16] = {
 		"Line Out", "Speaker", "HP Out", "CD",
 		"SPDIF Out", "Digital Out", "Modem Line", "Modem Hand",
 		"Line In", "Aux", "Mic", "Telephony",
 		"SPDIF In", "Digitial In", "Reserved", "Other"
 	};
 	static char *jack_locations[4] = { "Ext", "Int", "Sep", "Oth" };
 	unsigned int caps;

 	caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
 	snd_iprintf(buffer, "  Pincap 0x08%x:", caps);
 	if (caps & AC_PINCAP_IN)
 		snd_iprintf(buffer, " IN");
 	if (caps & AC_PINCAP_OUT)
 		snd_iprintf(buffer, " OUT");
 	if (caps & AC_PINCAP_HP_DRV)
 		snd_iprintf(buffer, " HP");
 	if (caps & AC_PINCAP_EAPD)
 		snd_iprintf(buffer, " EAPD");
 	if (caps & AC_PINCAP_PRES_DETECT)
 		snd_iprintf(buffer, " Detect");
 	snd_iprintf(buffer, "\n");
 	caps = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
 	snd_iprintf(buffer, "  Pin Default 0x%08x: [%s] %s at %s %s\n", caps,
 		    jack_conns[(caps & AC_DEFCFG_PORT_CONN) >> AC_DEFCFG_PORT_CONN_SHIFT],
 		    jack_types[(caps & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT],
 		    jack_locations[(caps >> (AC_DEFCFG_LOCATION_SHIFT + 4)) & 3],
 		    get_jack_location(caps));
 	snd_iprintf(buffer, "    Conn = %s, Color = %s\n",
 		    get_jack_connection(caps),
 		    get_jack_color(caps));
 }


 static void print_codec_info(struct snd_info_entry *entry,
 			     struct snd_info_buffer *buffer)
 {
 	struct hda_codec *codec = entry->private_data;
 	char buf[32];
 	hda_nid_t nid;
 	int i, nodes;

 	snd_hda_get_codec_name(codec, buf, sizeof(buf));
 	snd_iprintf(buffer, "Codec: %s\n", buf);
 	snd_iprintf(buffer, "Address: %d\n", codec->addr);
 	snd_iprintf(buffer, "Vendor Id: 0x%x\n", codec->vendor_id);
 	snd_iprintf(buffer, "Subsystem Id: 0x%x\n", codec->subsystem_id);
 	snd_iprintf(buffer, "Revision Id: 0x%x\n", codec->revision_id);

 	if (codec->mfg)
 		snd_iprintf(buffer, "Modem Function Group: 0x%x\n", codec->mfg);
 	else
 		snd_iprintf(buffer, "No Modem Function Group found\n");

 	if (! codec->afg)
 		return;
 	snd_hda_power_up(codec);
 	snd_iprintf(buffer, "Default PCM:\n");
 	print_pcm_caps(buffer, codec, codec->afg);
 	snd_iprintf(buffer, "Default Amp-In caps: ");
 	print_amp_caps(buffer, codec, codec->afg, HDA_INPUT);
 	snd_iprintf(buffer, "Default Amp-Out caps: ");
 	print_amp_caps(buffer, codec, codec->afg, HDA_OUTPUT);

 	nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
 	if (! nid || nodes < 0) {
 		snd_iprintf(buffer, "Invalid AFG subtree\n");
 		snd_hda_power_down(codec);
 		return;
 	}
 	for (i = 0; i < nodes; i++, nid++) {
 		unsigned int wid_caps =
 			snd_hda_param_read(codec, nid,
 					   AC_PAR_AUDIO_WIDGET_CAP);
 		unsigned int wid_type =
 			(wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
 		int conn_len = 0;
 		hda_nid_t conn[HDA_MAX_CONNECTIONS];

 		snd_iprintf(buffer, "Node 0x%02x [%s] wcaps 0x%x:", nid,
 			    get_wid_type_name(wid_type), wid_caps);
 		if (wid_caps & AC_WCAP_STEREO)
 			snd_iprintf(buffer, " Stereo");
 		else
 			snd_iprintf(buffer, " Mono");
 		if (wid_caps & AC_WCAP_DIGITAL)
 			snd_iprintf(buffer, " Digital");
 		if (wid_caps & AC_WCAP_IN_AMP)
 			snd_iprintf(buffer, " Amp-In");
 		if (wid_caps & AC_WCAP_OUT_AMP)
 			snd_iprintf(buffer, " Amp-Out");
 		snd_iprintf(buffer, "\n");

 		if (wid_caps & AC_WCAP_CONN_LIST)
 			conn_len = snd_hda_get_connections(codec, nid, conn,
 							   HDA_MAX_CONNECTIONS);

 		if (wid_caps & AC_WCAP_IN_AMP) {
 			snd_iprintf(buffer, "  Amp-In caps: ");
 			print_amp_caps(buffer, codec, nid, HDA_INPUT);
 			snd_iprintf(buffer, "  Amp-In vals: ");
 			print_amp_vals(buffer, codec, nid, HDA_INPUT,
 				       wid_caps & AC_WCAP_STEREO, conn_len);
 		}
 		if (wid_caps & AC_WCAP_OUT_AMP) {
 			snd_iprintf(buffer, "  Amp-Out caps: ");
 			print_amp_caps(buffer, codec, nid, HDA_OUTPUT);
 			snd_iprintf(buffer, "  Amp-Out vals: ");
 			print_amp_vals(buffer, codec, nid, HDA_OUTPUT,
 				       wid_caps & AC_WCAP_STEREO, 1);
 		}

 		if (wid_type == AC_WID_PIN) {
 			unsigned int pinctls;
 			print_pin_caps(buffer, codec, nid);
 			pinctls = snd_hda_codec_read(codec, nid, 0,
 					     AC_VERB_GET_PIN_WIDGET_CONTROL,
 						     0);
 			snd_iprintf(buffer, "  Pin-ctls: 0x%02x:", pinctls);
 			if (pinctls & AC_PINCTL_IN_EN)
 				snd_iprintf(buffer, " IN");
 			if (pinctls & AC_PINCTL_OUT_EN)
 				snd_iprintf(buffer, " OUT");
 			if (pinctls & AC_PINCTL_HP_EN)
 				snd_iprintf(buffer, " HP");
 			snd_iprintf(buffer, "\n");
 		}

 		if ((wid_type == AC_WID_AUD_OUT || wid_type == AC_WID_AUD_IN) &&
 		    (wid_caps & AC_WCAP_FORMAT_OVRD)) {
 			snd_iprintf(buffer, "  PCM:\n");
 			print_pcm_caps(buffer, codec, nid);
 		}

 		if (wid_caps & AC_WCAP_POWER)
 			snd_iprintf(buffer, "  Power: 0x%x\n",
 				    snd_hda_codec_read(codec, nid, 0,
 						       AC_VERB_GET_POWER_STATE,
 						       0));

 		if (wid_caps & AC_WCAP_CONN_LIST) {
 			int c, curr = -1;
 			if (conn_len > 1 && wid_type != AC_WID_AUD_MIX)
 				curr = snd_hda_codec_read(codec, nid, 0,
 					AC_VERB_GET_CONNECT_SEL, 0);
 			snd_iprintf(buffer, "  Connection: %d\n", conn_len);
 			snd_iprintf(buffer, "    ");
 			for (c = 0; c < conn_len; c++) {
 				snd_iprintf(buffer, " 0x%02x", conn[c]);
 				if (c == curr)
 					snd_iprintf(buffer, "*");
 			}
 			snd_iprintf(buffer, "\n");
 		}
 	}
 	snd_hda_power_down(codec);
 }

 /*
  * create a proc read
  */
 int snd_hda_codec_proc_new(struct hda_codec *codec)
 {
 	char name[32];
 	struct snd_info_entry *entry;
 	int err;

 	snprintf(name, sizeof(name), "codec#%d", codec->addr);
 	err = snd_card_proc_new(codec->bus->card, name, &entry);
 	if (err < 0)
 		return err;

 	snd_info_set_text_ops(entry, codec, print_codec_info);
 	return 0;
 }
	/*
	* Universal Interface for Intel High Definition Audio Codec
	*
	* Generic proc interface
	*
	* Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
	*
	*
	* This driver is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This driver is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#include <sound/driver.h>
	#include <linux/init.h>
	#include <sound/core.h>
	#include "hda_codec.h"
	#include "hda_local.h"

	static const char *get_wid_type_name(unsigned int wid_value)
	{
	static char *names[16] = {
	[AC_WID_AUD_OUT] = "Audio Output",
	[AC_WID_AUD_IN] = "Audio Input",
	[AC_WID_AUD_MIX] = "Audio Mixer",
	[AC_WID_AUD_SEL] = "Audio Selector",
	[AC_WID_PIN] = "Pin Complex",
	[AC_WID_POWER] = "Power Widget",
	[AC_WID_VOL_KNB] = "Volume Knob Widget",
	[AC_WID_BEEP] = "Beep Generator Widget",
	[AC_WID_VENDOR] = "Vendor Defined Widget",
	};
	wid_value &= 0xf;
	if (names[wid_value])
	return names[wid_value];
	else
	return "UNKNOWN Widget";
	}

	static void print_amp_caps(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid, int dir)
	{
	unsigned int caps;
	caps = snd_hda_param_read(codec, nid,
	dir == HDA_OUTPUT ?
	AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
	if (caps == -1 \|\| caps == 0) {
	snd_iprintf(buffer, "N/A\n");
	return;
	}
	snd_iprintf(buffer, "ofs=0x%02x, nsteps=0x%02x, stepsize=0x%02x, "
	"mute=%x\n",
	caps & AC_AMPCAP_OFFSET,
	(caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT,
	(caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT,
	(caps & AC_AMPCAP_MUTE) >> AC_AMPCAP_MUTE_SHIFT);
	}

	static void print_amp_vals(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid,
	int dir, int stereo, int indices)
	{
	unsigned int val;
	int i;

	dir = dir == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
	for (i = 0; i < indices; i++) {
	snd_iprintf(buffer, " [");
	if (stereo) {
	val = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_AMP_GAIN_MUTE,
	AC_AMP_GET_LEFT \| dir \| i);
	snd_iprintf(buffer, "0x%02x ", val);
	}
	val = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_AMP_GAIN_MUTE,
	AC_AMP_GET_RIGHT \| dir \| i);
	snd_iprintf(buffer, "0x%02x]", val);
	}
	snd_iprintf(buffer, "\n");
	}

	static void print_pcm_rates(struct snd_info_buffer *buffer, unsigned int pcm)
	{
	static unsigned int rates[] = {
	8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
	96000, 176400, 192000, 384000
	};
	int i;

	pcm &= AC_SUPPCM_RATES;
	snd_iprintf(buffer, " rates [0x%x]:", pcm);
	for (i = 0; i < ARRAY_SIZE(rates); i++)
	if (pcm & (1 << i))
	snd_iprintf(buffer, " %d", rates[i]);
	snd_iprintf(buffer, "\n");
	}

	static void print_pcm_bits(struct snd_info_buffer *buffer, unsigned int pcm)
	{
	static unsigned int bits[] = { 8, 16, 20, 24, 32 };
	int i;

	pcm = (pcm >> 16) & 0xff;
	snd_iprintf(buffer, " bits [0x%x]:", pcm);
	for (i = 0; i < ARRAY_SIZE(bits); i++)
	if (pcm & (1 << i))
	snd_iprintf(buffer, " %d", bits[i]);
	snd_iprintf(buffer, "\n");
	}

	static void print_pcm_formats(struct snd_info_buffer *buffer,
	unsigned int streams)
	{
	snd_iprintf(buffer, " formats [0x%x]:", streams & 0xf);
	if (streams & AC_SUPFMT_PCM)
	snd_iprintf(buffer, " PCM");
	if (streams & AC_SUPFMT_FLOAT32)
	snd_iprintf(buffer, " FLOAT");
	if (streams & AC_SUPFMT_AC3)
	snd_iprintf(buffer, " AC3");
	snd_iprintf(buffer, "\n");
	}

	static void print_pcm_caps(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	unsigned int pcm = snd_hda_param_read(codec, nid, AC_PAR_PCM);
	unsigned int stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
	if (pcm == -1 \|\| stream == -1) {
	snd_iprintf(buffer, "N/A\n");
	return;
	}
	print_pcm_rates(buffer, pcm);
	print_pcm_bits(buffer, pcm);
	print_pcm_formats(buffer, stream);
	}

	static const char *get_jack_location(u32 cfg)
	{
	static char *bases[7] = {
	"N/A", "Rear", "Front", "Left", "Right", "Top", "Bottom",
	};
	static unsigned char specials_idx[] = {
	0x07, 0x08,
	0x17, 0x18, 0x19,
	0x37, 0x38
	};
	static char *specials[] = {
	"Rear Panel", "Drive Bar",
	"Riser", "HDMI", "ATAPI",
	"Mobile-In", "Mobile-Out"
	};
	int i;
	cfg = (cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT;
	if ((cfg & 0x0f) < 7)
	return bases[cfg & 0x0f];
	for (i = 0; i < ARRAY_SIZE(specials_idx); i++) {
	if (cfg == specials_idx[i])
	return specials[i];
	}
	return "UNKNOWN";
	}

	static const char *get_jack_connection(u32 cfg)
	{
	static char *names[16] = {
	"Unknown", "1/8", "1/4", "ATAPI",
	"RCA", "Optical","Digital", "Analog",
	"DIN", "XLR", "RJ11", "Comb",
	NULL, NULL, NULL, "Other"
	};
	cfg = (cfg & AC_DEFCFG_CONN_TYPE) >> AC_DEFCFG_CONN_TYPE_SHIFT;
	if (names[cfg])
	return names[cfg];
	else
	return "UNKNOWN";
	}

	static const char *get_jack_color(u32 cfg)
	{
	static char *names[16] = {
	"Unknown", "Black", "Grey", "Blue",
	"Green", "Red", "Orange", "Yellow",
	"Purple", "Pink", NULL, NULL,
	NULL, NULL, "White", "Other",
	};
	cfg = (cfg & AC_DEFCFG_COLOR) >> AC_DEFCFG_COLOR_SHIFT;
	if (names[cfg])
	return names[cfg];
	else
	return "UNKNOWN";
	}

	static void print_pin_caps(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	static char *jack_conns[4] = { "Jack", "N/A", "Fixed", "Both" };
	static char *jack_types[16] = {
	"Line Out", "Speaker", "HP Out", "CD",
	"SPDIF Out", "Digital Out", "Modem Line", "Modem Hand",
	"Line In", "Aux", "Mic", "Telephony",
	"SPDIF In", "Digitial In", "Reserved", "Other"
	};
	static char *jack_locations[4] = { "Ext", "Int", "Sep", "Oth" };
	unsigned int caps;

	caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
	snd_iprintf(buffer, " Pincap 0x08%x:", caps);
	if (caps & AC_PINCAP_IN)
	snd_iprintf(buffer, " IN");
	if (caps & AC_PINCAP_OUT)
	snd_iprintf(buffer, " OUT");
	if (caps & AC_PINCAP_HP_DRV)
	snd_iprintf(buffer, " HP");
	if (caps & AC_PINCAP_EAPD)
	snd_iprintf(buffer, " EAPD");
	if (caps & AC_PINCAP_PRES_DETECT)
	snd_iprintf(buffer, " Detect");
	snd_iprintf(buffer, "\n");
	caps = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
	snd_iprintf(buffer, " Pin Default 0x%08x: [%s] %s at %s %s\n", caps,
	jack_conns[(caps & AC_DEFCFG_PORT_CONN) >> AC_DEFCFG_PORT_CONN_SHIFT],
	jack_types[(caps & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT],
	jack_locations[(caps >> (AC_DEFCFG_LOCATION_SHIFT + 4)) & 3],
	get_jack_location(caps));
	snd_iprintf(buffer, " Conn = %s, Color = %s\n",
	get_jack_connection(caps),
	get_jack_color(caps));
	}


	static void print_codec_info(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct hda_codec *codec = entry->private_data;
	char buf[32];
	hda_nid_t nid;
	int i, nodes;

	snd_hda_get_codec_name(codec, buf, sizeof(buf));
	snd_iprintf(buffer, "Codec: %s\n", buf);
	snd_iprintf(buffer, "Address: %d\n", codec->addr);
	snd_iprintf(buffer, "Vendor Id: 0x%x\n", codec->vendor_id);
	snd_iprintf(buffer, "Subsystem Id: 0x%x\n", codec->subsystem_id);
	snd_iprintf(buffer, "Revision Id: 0x%x\n", codec->revision_id);

	if (codec->mfg)
	snd_iprintf(buffer, "Modem Function Group: 0x%x\n", codec->mfg);
	else
	snd_iprintf(buffer, "No Modem Function Group found\n");

	if (! codec->afg)
	return;
	snd_hda_power_up(codec);
	snd_iprintf(buffer, "Default PCM:\n");
	print_pcm_caps(buffer, codec, codec->afg);
	snd_iprintf(buffer, "Default Amp-In caps: ");
	print_amp_caps(buffer, codec, codec->afg, HDA_INPUT);
	snd_iprintf(buffer, "Default Amp-Out caps: ");
	print_amp_caps(buffer, codec, codec->afg, HDA_OUTPUT);

	nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
	if (! nid \|\| nodes < 0) {
	snd_iprintf(buffer, "Invalid AFG subtree\n");
	snd_hda_power_down(codec);
	return;
	}
	for (i = 0; i < nodes; i++, nid++) {
	unsigned int wid_caps =
	snd_hda_param_read(codec, nid,
	AC_PAR_AUDIO_WIDGET_CAP);
	unsigned int wid_type =
	(wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
	int conn_len = 0;
	hda_nid_t conn[HDA_MAX_CONNECTIONS];

	snd_iprintf(buffer, "Node 0x%02x [%s] wcaps 0x%x:", nid,
	get_wid_type_name(wid_type), wid_caps);
	if (wid_caps & AC_WCAP_STEREO)
	snd_iprintf(buffer, " Stereo");
	else
	snd_iprintf(buffer, " Mono");
	if (wid_caps & AC_WCAP_DIGITAL)
	snd_iprintf(buffer, " Digital");
	if (wid_caps & AC_WCAP_IN_AMP)
	snd_iprintf(buffer, " Amp-In");
	if (wid_caps & AC_WCAP_OUT_AMP)
	snd_iprintf(buffer, " Amp-Out");
	snd_iprintf(buffer, "\n");

	if (wid_caps & AC_WCAP_CONN_LIST)
	conn_len = snd_hda_get_connections(codec, nid, conn,
	HDA_MAX_CONNECTIONS);

	if (wid_caps & AC_WCAP_IN_AMP) {
	snd_iprintf(buffer, " Amp-In caps: ");
	print_amp_caps(buffer, codec, nid, HDA_INPUT);
	snd_iprintf(buffer, " Amp-In vals: ");
	print_amp_vals(buffer, codec, nid, HDA_INPUT,
	wid_caps & AC_WCAP_STEREO, conn_len);
	}
	if (wid_caps & AC_WCAP_OUT_AMP) {
	snd_iprintf(buffer, " Amp-Out caps: ");
	print_amp_caps(buffer, codec, nid, HDA_OUTPUT);
	snd_iprintf(buffer, " Amp-Out vals: ");
	print_amp_vals(buffer, codec, nid, HDA_OUTPUT,
	wid_caps & AC_WCAP_STEREO, 1);
	}

	if (wid_type == AC_WID_PIN) {
	unsigned int pinctls;
	print_pin_caps(buffer, codec, nid);
	pinctls = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_PIN_WIDGET_CONTROL,
	0);
	snd_iprintf(buffer, " Pin-ctls: 0x%02x:", pinctls);
	if (pinctls & AC_PINCTL_IN_EN)
	snd_iprintf(buffer, " IN");
	if (pinctls & AC_PINCTL_OUT_EN)
	snd_iprintf(buffer, " OUT");
	if (pinctls & AC_PINCTL_HP_EN)
	snd_iprintf(buffer, " HP");
	snd_iprintf(buffer, "\n");
	}

	if ((wid_type == AC_WID_AUD_OUT \|\| wid_type == AC_WID_AUD_IN) &&
	(wid_caps & AC_WCAP_FORMAT_OVRD)) {
	snd_iprintf(buffer, " PCM:\n");
	print_pcm_caps(buffer, codec, nid);
	}

	if (wid_caps & AC_WCAP_POWER)
	snd_iprintf(buffer, " Power: 0x%x\n",
	snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_POWER_STATE,
	0));

	if (wid_caps & AC_WCAP_CONN_LIST) {
	int c, curr = -1;
	if (conn_len > 1 && wid_type != AC_WID_AUD_MIX)
	curr = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_CONNECT_SEL, 0);
	snd_iprintf(buffer, " Connection: %d\n", conn_len);
	snd_iprintf(buffer, " ");
	for (c = 0; c < conn_len; c++) {
	snd_iprintf(buffer, " 0x%02x", conn[c]);
	if (c == curr)
	snd_iprintf(buffer, "*");
	}
	snd_iprintf(buffer, "\n");
	}
	}
	snd_hda_power_down(codec);
	}

	/*
	* create a proc read
	*/
	int snd_hda_codec_proc_new(struct hda_codec *codec)
	{
	char name[32];
	struct snd_info_entry *entry;
	int err;

	snprintf(name, sizeof(name), "codec#%d", codec->addr);
	err = snd_card_proc_new(codec->bus->card, name, &entry);
	if (err < 0)
	return err;

	snd_info_set_text_ops(entry, codec, print_codec_info);
	return 0;
	}