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 <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)
 {
 	char buf[SND_PRINT_RATES_ADVISED_BUFSIZE];

 	pcm &= AC_SUPPCM_RATES;
 	snd_iprintf(buffer, "    rates [0x%x]:", pcm);
 	snd_print_pcm_rates(pcm, buf, sizeof(buf));
 	snd_iprintf(buffer, "%s\n", buf);
 }

 static void print_pcm_bits(struct snd_info_buffer *buffer, unsigned int pcm)
 {
 	char buf[SND_PRINT_BITS_ADVISED_BUFSIZE];

 	snd_iprintf(buffer, "    bits [0x%x]:", (pcm >> 16) & 0xff);
 	snd_print_pcm_bits(pcm, buf, sizeof(buf));
 	snd_iprintf(buffer, "%s\n", buf);
 }

 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_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,
 			   int *supports_vref)
 {
 	static char *jack_conns[4] = { "Jack", "N/A", "Fixed", "Both" };
 	unsigned int caps, val;

 	caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
 	snd_iprintf(buffer, "  Pincap 0x%08x:", 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");
 	if (caps & AC_PINCAP_BALANCE)
 		snd_iprintf(buffer, " Balanced");
 	if (caps & AC_PINCAP_HDMI) {
 		/* Realtek uses this bit as a different meaning */
 		if ((codec->vendor_id >> 16) == 0x10ec)
 			snd_iprintf(buffer, " R/L");
 		else
 			snd_iprintf(buffer, " HDMI");
 	}
 	if (caps & AC_PINCAP_TRIG_REQ)
 		snd_iprintf(buffer, " Trigger");
 	if (caps & AC_PINCAP_IMP_SENSE)
 		snd_iprintf(buffer, " ImpSense");
 	snd_iprintf(buffer, "\n");
 	if (caps & AC_PINCAP_VREF) {
 		unsigned int vref =
 			(caps & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
 		snd_iprintf(buffer, "    Vref caps:");
 		if (vref & AC_PINCAP_VREF_HIZ)
 			snd_iprintf(buffer, " HIZ");
 		if (vref & AC_PINCAP_VREF_50)
 			snd_iprintf(buffer, " 50");
 		if (vref & AC_PINCAP_VREF_GRD)
 			snd_iprintf(buffer, " GRD");
 		if (vref & AC_PINCAP_VREF_80)
 			snd_iprintf(buffer, " 80");
 		if (vref & AC_PINCAP_VREF_100)
 			snd_iprintf(buffer, " 100");
 		snd_iprintf(buffer, "\n");
 		*supports_vref = 1;
 	} else
 		*supports_vref = 0;
 	if (caps & AC_PINCAP_EAPD) {
 		val = snd_hda_codec_read(codec, nid, 0,
 					 AC_VERB_GET_EAPD_BTLENABLE, 0);
 		snd_iprintf(buffer, "  EAPD 0x%x:", val);
 		if (val & AC_EAPDBTL_BALANCED)
 			snd_iprintf(buffer, " BALANCED");
 		if (val & AC_EAPDBTL_EAPD)
 			snd_iprintf(buffer, " EAPD");
 		if (val & AC_EAPDBTL_LR_SWAP)
 			snd_iprintf(buffer, " R/L");
 		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],
 		    snd_hda_get_jack_type(caps),
 		    snd_hda_get_jack_connectivity(caps),
 		    snd_hda_get_jack_location(caps));
 	snd_iprintf(buffer, "    Conn = %s, Color = %s\n",
 		    get_jack_connection(caps),
 		    get_jack_color(caps));
 	/* Default association and sequence values refer to default grouping
 	 * of pin complexes and their sequence within the group. This is used
 	 * for priority and resource allocation.
 	 */
 	snd_iprintf(buffer, "    DefAssociation = 0x%x, Sequence = 0x%x\n",
 		    (caps & AC_DEFCFG_DEF_ASSOC) >> AC_DEFCFG_ASSOC_SHIFT,
 		    caps & AC_DEFCFG_SEQUENCE);
 	if (((caps & AC_DEFCFG_MISC) >> AC_DEFCFG_MISC_SHIFT) &
 	    AC_DEFCFG_MISC_NO_PRESENCE) {
 		/* Miscellaneous bit indicates external hardware does not
 		 * support presence detection even if the pin complex
 		 * indicates it is supported.
 		 */
 		snd_iprintf(buffer, "    Misc = NO_PRESENCE\n");
 	}
 }

 static void print_pin_ctls(struct snd_info_buffer *buffer,
 			   struct hda_codec *codec, hda_nid_t nid,
 			   int supports_vref)
 {
 	unsigned int pinctls;

 	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");
 	if (supports_vref) {
 		int vref = pinctls & AC_PINCTL_VREFEN;
 		switch (vref) {
 		case AC_PINCTL_VREF_HIZ:
 			snd_iprintf(buffer, " VREF_HIZ");
 			break;
 		case AC_PINCTL_VREF_50:
 			snd_iprintf(buffer, " VREF_50");
 			break;
 		case AC_PINCTL_VREF_GRD:
 			snd_iprintf(buffer, " VREF_GRD");
 			break;
 		case AC_PINCTL_VREF_80:
 			snd_iprintf(buffer, " VREF_80");
 			break;
 		case AC_PINCTL_VREF_100:
 			snd_iprintf(buffer, " VREF_100");
 			break;
 		}
 	}
 	snd_iprintf(buffer, "\n");
 }

 static void print_vol_knob(struct snd_info_buffer *buffer,
 			   struct hda_codec *codec, hda_nid_t nid)
 {
 	unsigned int cap = snd_hda_param_read(codec, nid,
 					      AC_PAR_VOL_KNB_CAP);
 	snd_iprintf(buffer, "  Volume-Knob: delta=%d, steps=%d, ",
 		    (cap >> 7) & 1, cap & 0x7f);
 	cap = snd_hda_codec_read(codec, nid, 0,
 				 AC_VERB_GET_VOLUME_KNOB_CONTROL, 0);
 	snd_iprintf(buffer, "direct=%d, val=%d\n",
 		    (cap >> 7) & 1, cap & 0x7f);
 }

 static void print_audio_io(struct snd_info_buffer *buffer,
 			   struct hda_codec *codec, hda_nid_t nid,
 			   unsigned int wid_type)
 {
 	int conv = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
 	snd_iprintf(buffer,
 		    "  Converter: stream=%d, channel=%d\n",
 		    (conv & AC_CONV_STREAM) >> AC_CONV_STREAM_SHIFT,
 		    conv & AC_CONV_CHANNEL);

 	if (wid_type == AC_WID_AUD_IN && (conv & AC_CONV_CHANNEL) == 0) {
 		int sdi = snd_hda_codec_read(codec, nid, 0,
 					     AC_VERB_GET_SDI_SELECT, 0);
 		snd_iprintf(buffer, "  SDI-Select: %d\n",
 			    sdi & AC_SDI_SELECT);
 	}
 }

 static void print_digital_conv(struct snd_info_buffer *buffer,
 			       struct hda_codec *codec, hda_nid_t nid)
 {
 	unsigned int digi1 = snd_hda_codec_read(codec, nid, 0,
 						AC_VERB_GET_DIGI_CONVERT_1, 0);
 	snd_iprintf(buffer, "  Digital:");
 	if (digi1 & AC_DIG1_ENABLE)
 		snd_iprintf(buffer, " Enabled");
 	if (digi1 & AC_DIG1_V)
 		snd_iprintf(buffer, " Validity");
 	if (digi1 & AC_DIG1_VCFG)
 		snd_iprintf(buffer, " ValidityCfg");
 	if (digi1 & AC_DIG1_EMPHASIS)
 		snd_iprintf(buffer, " Preemphasis");
 	if (digi1 & AC_DIG1_COPYRIGHT)
 		snd_iprintf(buffer, " Copyright");
 	if (digi1 & AC_DIG1_NONAUDIO)
 		snd_iprintf(buffer, " Non-Audio");
 	if (digi1 & AC_DIG1_PROFESSIONAL)
 		snd_iprintf(buffer, " Pro");
 	if (digi1 & AC_DIG1_LEVEL)
 		snd_iprintf(buffer, " GenLevel");
 	snd_iprintf(buffer, "\n");
 	snd_iprintf(buffer, "  Digital category: 0x%x\n",
 		    (digi1 >> 8) & AC_DIG2_CC);
 }

 static const char *get_pwr_state(u32 state)
 {
 	static const char *buf[4] = {
 		"D0", "D1", "D2", "D3"
 	};
 	if (state < 4)
 		return buf[state];
 	return "UNKNOWN";
 }

 static void print_power_state(struct snd_info_buffer *buffer,
 			      struct hda_codec *codec, hda_nid_t nid)
 {
 	int pwr = snd_hda_codec_read(codec, nid, 0,
 				     AC_VERB_GET_POWER_STATE, 0);
 	snd_iprintf(buffer, "  Power: setting=%s, actual=%s\n",
 		    get_pwr_state(pwr & AC_PWRST_SETTING),
 		    get_pwr_state((pwr & AC_PWRST_ACTUAL) >>
 				  AC_PWRST_ACTUAL_SHIFT));
 }

 static void print_unsol_cap(struct snd_info_buffer *buffer,
 			      struct hda_codec *codec, hda_nid_t nid)
 {
 	int unsol = snd_hda_codec_read(codec, nid, 0,
 				       AC_VERB_GET_UNSOLICITED_RESPONSE, 0);
 	snd_iprintf(buffer,
 		    "  Unsolicited: tag=%02x, enabled=%d\n",
 		    unsol & AC_UNSOL_TAG,
 		    (unsol & AC_UNSOL_ENABLED) ? 1 : 0);
 }

 static void print_proc_caps(struct snd_info_buffer *buffer,
 			    struct hda_codec *codec, hda_nid_t nid)
 {
 	unsigned int proc_caps = snd_hda_param_read(codec, nid,
 						    AC_PAR_PROC_CAP);
 	snd_iprintf(buffer, "  Processing caps: benign=%d, ncoeff=%d\n",
 		    proc_caps & AC_PCAP_BENIGN,
 		    (proc_caps & AC_PCAP_NUM_COEF) >> AC_PCAP_NUM_COEF_SHIFT);
 }

 static void print_conn_list(struct snd_info_buffer *buffer,
 			    struct hda_codec *codec, hda_nid_t nid,
 			    unsigned int wid_type, hda_nid_t *conn,
 			    int conn_len)
 {
 	int c, curr = -1;

 	if (conn_len > 1 && wid_type != AC_WID_AUD_MIX &&
 	    wid_type != AC_WID_VOL_KNB)
 		curr = snd_hda_codec_read(codec, nid, 0,
 					  AC_VERB_GET_CONNECT_SEL, 0);
 	snd_iprintf(buffer, "  Connection: %d\n", conn_len);
 	if (conn_len > 0) {
 		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");
 	}
 }

 static void print_gpio(struct snd_info_buffer *buffer,
 		       struct hda_codec *codec, hda_nid_t nid)
 {
 	unsigned int gpio =
 		snd_hda_param_read(codec, codec->afg, AC_PAR_GPIO_CAP);
 	unsigned int enable, direction, wake, unsol, sticky, data;
 	int i, max;
 	snd_iprintf(buffer, "GPIO: io=%d, o=%d, i=%d, "
 		    "unsolicited=%d, wake=%d\n",
 		    gpio & AC_GPIO_IO_COUNT,
 		    (gpio & AC_GPIO_O_COUNT) >> AC_GPIO_O_COUNT_SHIFT,
 		    (gpio & AC_GPIO_I_COUNT) >> AC_GPIO_I_COUNT_SHIFT,
 		    (gpio & AC_GPIO_UNSOLICITED) ? 1 : 0,
 		    (gpio & AC_GPIO_WAKE) ? 1 : 0);
 	max = gpio & AC_GPIO_IO_COUNT;
 	if (!max || max > 8)
 		return;
 	enable = snd_hda_codec_read(codec, nid, 0,
 				    AC_VERB_GET_GPIO_MASK, 0);
 	direction = snd_hda_codec_read(codec, nid, 0,
 				       AC_VERB_GET_GPIO_DIRECTION, 0);
 	wake = snd_hda_codec_read(codec, nid, 0,
 				  AC_VERB_GET_GPIO_WAKE_MASK, 0);
 	unsol  = snd_hda_codec_read(codec, nid, 0,
 				    AC_VERB_GET_GPIO_UNSOLICITED_RSP_MASK, 0);
 	sticky = snd_hda_codec_read(codec, nid, 0,
 				    AC_VERB_GET_GPIO_STICKY_MASK, 0);
 	data = snd_hda_codec_read(codec, nid, 0,
 				  AC_VERB_GET_GPIO_DATA, 0);
 	for (i = 0; i < max; ++i)
 		snd_iprintf(buffer,
 			    "  IO[%d]: enable=%d, dir=%d, wake=%d, "
 			    "sticky=%d, data=%d, unsol=%d\n", i,
 			    (enable & (1<<i)) ? 1 : 0,
 			    (direction & (1<<i)) ? 1 : 0,
 			    (wake & (1<<i)) ? 1 : 0,
 			    (sticky & (1<<i)) ? 1 : 0,
 			    (data & (1<<i)) ? 1 : 0,
 			    (unsol & (1<<i)) ? 1 : 0);
 	/* FIXME: add GPO and GPI pin information */
 }

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

 	snd_iprintf(buffer, "Codec: %s\n",
 		    codec->name ? codec->name : "Not Set");
 	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;
 	}

 	print_gpio(buffer, codec, codec->afg);
 	if (codec->proc_widget_hook)
 		codec->proc_widget_hook(buffer, codec, codec->afg);

 	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;
 		hda_nid_t conn[HDA_MAX_CONNECTIONS];
 		int conn_len = 0;

 		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) {
 			unsigned int chans;
 			chans = (wid_caps & AC_WCAP_CHAN_CNT_EXT) >> 13;
 			chans = ((chans << 1) | 1) + 1;
 			if (chans == 2)
 				snd_iprintf(buffer, " Stereo");
 			else
 				snd_iprintf(buffer, " %d-Channels", chans);
 		} 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");
 		if (wid_caps & AC_WCAP_STRIPE)
 			snd_iprintf(buffer, " Stripe");
 		if (wid_caps & AC_WCAP_LR_SWAP)
 			snd_iprintf(buffer, " R/L");
 		if (wid_caps & AC_WCAP_CP_CAPS)
 			snd_iprintf(buffer, " CP");
 		snd_iprintf(buffer, "\n");

 		/* volume knob is a special widget that always have connection
 		 * list
 		 */
 		if (wid_type == AC_WID_VOL_KNB)
 			wid_caps |= AC_WCAP_CONN_LIST;

 		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,
 				       wid_type == AC_WID_PIN ? 1 : 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);
 		}

 		switch (wid_type) {
 		case AC_WID_PIN: {
 			int supports_vref;
 			print_pin_caps(buffer, codec, nid, &supports_vref);
 			print_pin_ctls(buffer, codec, nid, supports_vref);
 			break;
 		}
 		case AC_WID_VOL_KNB:
 			print_vol_knob(buffer, codec, nid);
 			break;
 		case AC_WID_AUD_OUT:
 		case AC_WID_AUD_IN:
 			print_audio_io(buffer, codec, nid, wid_type);
 			if (wid_caps & AC_WCAP_DIGITAL)
 				print_digital_conv(buffer, codec, nid);
 			if (wid_caps & AC_WCAP_FORMAT_OVRD) {
 				snd_iprintf(buffer, "  PCM:\n");
 				print_pcm_caps(buffer, codec, nid);
 			}
 			break;
 		}

 		if (wid_caps & AC_WCAP_UNSOL_CAP)
 			print_unsol_cap(buffer, codec, nid);

 		if (wid_caps & AC_WCAP_POWER)
 			print_power_state(buffer, codec, nid);

 		if (wid_caps & AC_WCAP_DELAY)
 			snd_iprintf(buffer, "  Delay: %d samples\n",
 				    (wid_caps & AC_WCAP_DELAY) >>
 				    AC_WCAP_DELAY_SHIFT);

 		if (wid_caps & AC_WCAP_CONN_LIST)
 			print_conn_list(buffer, codec, nid, wid_type,
 					conn, conn_len);

 		if (wid_caps & AC_WCAP_PROC_WID)
 			print_proc_caps(buffer, codec, nid);

 		if (codec->proc_widget_hook)
 			codec->proc_widget_hook(buffer, codec, nid);
 	}
 	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 <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)
	{
	char buf[SND_PRINT_RATES_ADVISED_BUFSIZE];

	pcm &= AC_SUPPCM_RATES;
	snd_iprintf(buffer, " rates [0x%x]:", pcm);
	snd_print_pcm_rates(pcm, buf, sizeof(buf));
	snd_iprintf(buffer, "%s\n", buf);
	}

	static void print_pcm_bits(struct snd_info_buffer *buffer, unsigned int pcm)
	{
	char buf[SND_PRINT_BITS_ADVISED_BUFSIZE];

	snd_iprintf(buffer, " bits [0x%x]:", (pcm >> 16) & 0xff);
	snd_print_pcm_bits(pcm, buf, sizeof(buf));
	snd_iprintf(buffer, "%s\n", buf);
	}

	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_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,
	int *supports_vref)
	{
	static char *jack_conns[4] = { "Jack", "N/A", "Fixed", "Both" };
	unsigned int caps, val;

	caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
	snd_iprintf(buffer, " Pincap 0x%08x:", 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");
	if (caps & AC_PINCAP_BALANCE)
	snd_iprintf(buffer, " Balanced");
	if (caps & AC_PINCAP_HDMI) {
	/* Realtek uses this bit as a different meaning */
	if ((codec->vendor_id >> 16) == 0x10ec)
	snd_iprintf(buffer, " R/L");
	else
	snd_iprintf(buffer, " HDMI");
	}
	if (caps & AC_PINCAP_TRIG_REQ)
	snd_iprintf(buffer, " Trigger");
	if (caps & AC_PINCAP_IMP_SENSE)
	snd_iprintf(buffer, " ImpSense");
	snd_iprintf(buffer, "\n");
	if (caps & AC_PINCAP_VREF) {
	unsigned int vref =
	(caps & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
	snd_iprintf(buffer, " Vref caps:");
	if (vref & AC_PINCAP_VREF_HIZ)
	snd_iprintf(buffer, " HIZ");
	if (vref & AC_PINCAP_VREF_50)
	snd_iprintf(buffer, " 50");
	if (vref & AC_PINCAP_VREF_GRD)
	snd_iprintf(buffer, " GRD");
	if (vref & AC_PINCAP_VREF_80)
	snd_iprintf(buffer, " 80");
	if (vref & AC_PINCAP_VREF_100)
	snd_iprintf(buffer, " 100");
	snd_iprintf(buffer, "\n");
	*supports_vref = 1;
	} else
	*supports_vref = 0;
	if (caps & AC_PINCAP_EAPD) {
	val = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_EAPD_BTLENABLE, 0);
	snd_iprintf(buffer, " EAPD 0x%x:", val);
	if (val & AC_EAPDBTL_BALANCED)
	snd_iprintf(buffer, " BALANCED");
	if (val & AC_EAPDBTL_EAPD)
	snd_iprintf(buffer, " EAPD");
	if (val & AC_EAPDBTL_LR_SWAP)
	snd_iprintf(buffer, " R/L");
	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],
	snd_hda_get_jack_type(caps),
	snd_hda_get_jack_connectivity(caps),
	snd_hda_get_jack_location(caps));
	snd_iprintf(buffer, " Conn = %s, Color = %s\n",
	get_jack_connection(caps),
	get_jack_color(caps));
	/* Default association and sequence values refer to default grouping
	* of pin complexes and their sequence within the group. This is used
	* for priority and resource allocation.
	*/
	snd_iprintf(buffer, " DefAssociation = 0x%x, Sequence = 0x%x\n",
	(caps & AC_DEFCFG_DEF_ASSOC) >> AC_DEFCFG_ASSOC_SHIFT,
	caps & AC_DEFCFG_SEQUENCE);
	if (((caps & AC_DEFCFG_MISC) >> AC_DEFCFG_MISC_SHIFT) &
	AC_DEFCFG_MISC_NO_PRESENCE) {
	/* Miscellaneous bit indicates external hardware does not
	* support presence detection even if the pin complex
	* indicates it is supported.
	*/
	snd_iprintf(buffer, " Misc = NO_PRESENCE\n");
	}
	}

	static void print_pin_ctls(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid,
	int supports_vref)
	{
	unsigned int pinctls;

	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");
	if (supports_vref) {
	int vref = pinctls & AC_PINCTL_VREFEN;
	switch (vref) {
	case AC_PINCTL_VREF_HIZ:
	snd_iprintf(buffer, " VREF_HIZ");
	break;
	case AC_PINCTL_VREF_50:
	snd_iprintf(buffer, " VREF_50");
	break;
	case AC_PINCTL_VREF_GRD:
	snd_iprintf(buffer, " VREF_GRD");
	break;
	case AC_PINCTL_VREF_80:
	snd_iprintf(buffer, " VREF_80");
	break;
	case AC_PINCTL_VREF_100:
	snd_iprintf(buffer, " VREF_100");
	break;
	}
	}
	snd_iprintf(buffer, "\n");
	}

	static void print_vol_knob(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	unsigned int cap = snd_hda_param_read(codec, nid,
	AC_PAR_VOL_KNB_CAP);
	snd_iprintf(buffer, " Volume-Knob: delta=%d, steps=%d, ",
	(cap >> 7) & 1, cap & 0x7f);
	cap = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_VOLUME_KNOB_CONTROL, 0);
	snd_iprintf(buffer, "direct=%d, val=%d\n",
	(cap >> 7) & 1, cap & 0x7f);
	}

	static void print_audio_io(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid,
	unsigned int wid_type)
	{
	int conv = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
	snd_iprintf(buffer,
	" Converter: stream=%d, channel=%d\n",
	(conv & AC_CONV_STREAM) >> AC_CONV_STREAM_SHIFT,
	conv & AC_CONV_CHANNEL);

	if (wid_type == AC_WID_AUD_IN && (conv & AC_CONV_CHANNEL) == 0) {
	int sdi = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_SDI_SELECT, 0);
	snd_iprintf(buffer, " SDI-Select: %d\n",
	sdi & AC_SDI_SELECT);
	}
	}

	static void print_digital_conv(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	unsigned int digi1 = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_DIGI_CONVERT_1, 0);
	snd_iprintf(buffer, " Digital:");
	if (digi1 & AC_DIG1_ENABLE)
	snd_iprintf(buffer, " Enabled");
	if (digi1 & AC_DIG1_V)
	snd_iprintf(buffer, " Validity");
	if (digi1 & AC_DIG1_VCFG)
	snd_iprintf(buffer, " ValidityCfg");
	if (digi1 & AC_DIG1_EMPHASIS)
	snd_iprintf(buffer, " Preemphasis");
	if (digi1 & AC_DIG1_COPYRIGHT)
	snd_iprintf(buffer, " Copyright");
	if (digi1 & AC_DIG1_NONAUDIO)
	snd_iprintf(buffer, " Non-Audio");
	if (digi1 & AC_DIG1_PROFESSIONAL)
	snd_iprintf(buffer, " Pro");
	if (digi1 & AC_DIG1_LEVEL)
	snd_iprintf(buffer, " GenLevel");
	snd_iprintf(buffer, "\n");
	snd_iprintf(buffer, " Digital category: 0x%x\n",
	(digi1 >> 8) & AC_DIG2_CC);
	}

	static const char *get_pwr_state(u32 state)
	{
	static const char *buf[4] = {
	"D0", "D1", "D2", "D3"
	};
	if (state < 4)
	return buf[state];
	return "UNKNOWN";
	}

	static void print_power_state(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	int pwr = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_POWER_STATE, 0);
	snd_iprintf(buffer, " Power: setting=%s, actual=%s\n",
	get_pwr_state(pwr & AC_PWRST_SETTING),
	get_pwr_state((pwr & AC_PWRST_ACTUAL) >>
	AC_PWRST_ACTUAL_SHIFT));
	}

	static void print_unsol_cap(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	int unsol = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_UNSOLICITED_RESPONSE, 0);
	snd_iprintf(buffer,
	" Unsolicited: tag=%02x, enabled=%d\n",
	unsol & AC_UNSOL_TAG,
	(unsol & AC_UNSOL_ENABLED) ? 1 : 0);
	}

	static void print_proc_caps(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	unsigned int proc_caps = snd_hda_param_read(codec, nid,
	AC_PAR_PROC_CAP);
	snd_iprintf(buffer, " Processing caps: benign=%d, ncoeff=%d\n",
	proc_caps & AC_PCAP_BENIGN,
	(proc_caps & AC_PCAP_NUM_COEF) >> AC_PCAP_NUM_COEF_SHIFT);
	}

	static void print_conn_list(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid,
	unsigned int wid_type, hda_nid_t *conn,
	int conn_len)
	{
	int c, curr = -1;

	if (conn_len > 1 && wid_type != AC_WID_AUD_MIX &&
	wid_type != AC_WID_VOL_KNB)
	curr = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_CONNECT_SEL, 0);
	snd_iprintf(buffer, " Connection: %d\n", conn_len);
	if (conn_len > 0) {
	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");
	}
	}

	static void print_gpio(struct snd_info_buffer *buffer,
	struct hda_codec *codec, hda_nid_t nid)
	{
	unsigned int gpio =
	snd_hda_param_read(codec, codec->afg, AC_PAR_GPIO_CAP);
	unsigned int enable, direction, wake, unsol, sticky, data;
	int i, max;
	snd_iprintf(buffer, "GPIO: io=%d, o=%d, i=%d, "
	"unsolicited=%d, wake=%d\n",
	gpio & AC_GPIO_IO_COUNT,
	(gpio & AC_GPIO_O_COUNT) >> AC_GPIO_O_COUNT_SHIFT,
	(gpio & AC_GPIO_I_COUNT) >> AC_GPIO_I_COUNT_SHIFT,
	(gpio & AC_GPIO_UNSOLICITED) ? 1 : 0,
	(gpio & AC_GPIO_WAKE) ? 1 : 0);
	max = gpio & AC_GPIO_IO_COUNT;
	if (!max \|\| max > 8)
	return;
	enable = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_GPIO_MASK, 0);
	direction = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_GPIO_DIRECTION, 0);
	wake = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_GPIO_WAKE_MASK, 0);
	unsol = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_GPIO_UNSOLICITED_RSP_MASK, 0);
	sticky = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_GPIO_STICKY_MASK, 0);
	data = snd_hda_codec_read(codec, nid, 0,
	AC_VERB_GET_GPIO_DATA, 0);
	for (i = 0; i < max; ++i)
	snd_iprintf(buffer,
	" IO[%d]: enable=%d, dir=%d, wake=%d, "
	"sticky=%d, data=%d, unsol=%d\n", i,
	(enable & (1<<i)) ? 1 : 0,
	(direction & (1<<i)) ? 1 : 0,
	(wake & (1<<i)) ? 1 : 0,
	(sticky & (1<<i)) ? 1 : 0,
	(data & (1<<i)) ? 1 : 0,
	(unsol & (1<<i)) ? 1 : 0);
	/* FIXME: add GPO and GPI pin information */
	}

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

	snd_iprintf(buffer, "Codec: %s\n",
	codec->name ? codec->name : "Not Set");
	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;
	}

	print_gpio(buffer, codec, codec->afg);
	if (codec->proc_widget_hook)
	codec->proc_widget_hook(buffer, codec, codec->afg);

	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;
	hda_nid_t conn[HDA_MAX_CONNECTIONS];
	int conn_len = 0;

	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) {
	unsigned int chans;
	chans = (wid_caps & AC_WCAP_CHAN_CNT_EXT) >> 13;
	chans = ((chans << 1) \| 1) + 1;
	if (chans == 2)
	snd_iprintf(buffer, " Stereo");
	else
	snd_iprintf(buffer, " %d-Channels", chans);
	} 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");
	if (wid_caps & AC_WCAP_STRIPE)
	snd_iprintf(buffer, " Stripe");
	if (wid_caps & AC_WCAP_LR_SWAP)
	snd_iprintf(buffer, " R/L");
	if (wid_caps & AC_WCAP_CP_CAPS)
	snd_iprintf(buffer, " CP");
	snd_iprintf(buffer, "\n");

	/* volume knob is a special widget that always have connection
	* list
	*/
	if (wid_type == AC_WID_VOL_KNB)
	wid_caps \|= AC_WCAP_CONN_LIST;

	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,
	wid_type == AC_WID_PIN ? 1 : 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);
	}

	switch (wid_type) {
	case AC_WID_PIN: {
	int supports_vref;
	print_pin_caps(buffer, codec, nid, &supports_vref);
	print_pin_ctls(buffer, codec, nid, supports_vref);
	break;
	}
	case AC_WID_VOL_KNB:
	print_vol_knob(buffer, codec, nid);
	break;
	case AC_WID_AUD_OUT:
	case AC_WID_AUD_IN:
	print_audio_io(buffer, codec, nid, wid_type);
	if (wid_caps & AC_WCAP_DIGITAL)
	print_digital_conv(buffer, codec, nid);
	if (wid_caps & AC_WCAP_FORMAT_OVRD) {
	snd_iprintf(buffer, " PCM:\n");
	print_pcm_caps(buffer, codec, nid);
	}
	break;
	}

	if (wid_caps & AC_WCAP_UNSOL_CAP)
	print_unsol_cap(buffer, codec, nid);

	if (wid_caps & AC_WCAP_POWER)
	print_power_state(buffer, codec, nid);

	if (wid_caps & AC_WCAP_DELAY)
	snd_iprintf(buffer, " Delay: %d samples\n",
	(wid_caps & AC_WCAP_DELAY) >>
	AC_WCAP_DELAY_SHIFT);

	if (wid_caps & AC_WCAP_CONN_LIST)
	print_conn_list(buffer, codec, nid, wid_type,
	conn, conn_len);

	if (wid_caps & AC_WCAP_PROC_WID)
	print_proc_caps(buffer, codec, nid);

	if (codec->proc_widget_hook)
	codec->proc_widget_hook(buffer, codec, nid);
	}
	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;
	}