Initial import

1 files changed, 877 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
new file mode 100644
index 000000000..baaf7ed06
--- /dev/null
+++ b/sound/pci/hda/hda_proc.c
@@ -0,0 +1,877 @@
+/*
+ * 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 <linux/slab.h>
+#include <sound/core.h>
+#include <linux/module.h>
+#include "hda_codec.h"
+#include "hda_local.h"
+
+static int dump_coef = -1;
+module_param(dump_coef, int, 0644);
+MODULE_PARM_DESC(dump_coef, "Dump processing coefficients in codec proc file (-1=auto, 0=disable, 1=enable)");
+
+/* always use noncached version */
+#define param_read(codec, nid, parm) \
+	snd_hdac_read_parm_uncached(&(codec)->core, nid, parm)
+
+static char *bits_names(unsigned int bits, char *names[], int size)
+{
+	int i, n;
+	static char buf[128];
+
+	for (i = 0, n = 0; i < size; i++) {
+		if (bits & (1U<<i) && names[i])
+			n += snprintf(buf + n, sizeof(buf) - n, " %s",
+				      names[i]);
+	}
+	buf[n] = '\0';
+
+	return buf;
+}
+
+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",
+	};
+	if (wid_value == -1)
+		return "UNKNOWN Widget";
+	wid_value &= 0xf;
+	if (names[wid_value])
+		return names[wid_value];
+	else
+		return "UNKNOWN Widget";
+}
+
+static void print_nid_array(struct snd_info_buffer *buffer,
+			    struct hda_codec *codec, hda_nid_t nid,
+			    struct snd_array *array)
+{
+	int i;
+	struct hda_nid_item *items = array->list, *item;
+	struct snd_kcontrol *kctl;
+	for (i = 0; i < array->used; i++) {
+		item = &items[i];
+		if (item->nid == nid) {
+			kctl = item->kctl;
+			snd_iprintf(buffer,
+			  "  Control: name=\"%s\", index=%i, device=%i\n",
+			  kctl->id.name, kctl->id.index + item->index,
+			  kctl->id.device);
+			if (item->flags & HDA_NID_ITEM_AMP)
+				snd_iprintf(buffer,
+				  "    ControlAmp: chs=%lu, dir=%s, "
+				  "idx=%lu, ofs=%lu\n",
+				  get_amp_channels(kctl),
+				  get_amp_direction(kctl) ? "Out" : "In",
+				  get_amp_index(kctl),
+				  get_amp_offset(kctl));
+		}
+	}
+}
+
+static void print_nid_pcms(struct snd_info_buffer *buffer,
+			   struct hda_codec *codec, hda_nid_t nid)
+{
+	int type;
+	struct hda_pcm *cpcm;
+
+	list_for_each_entry(cpcm, &codec->pcm_list_head, list) {
+		for (type = 0; type < 2; type++) {
+			if (cpcm->stream[type].nid != nid || cpcm->pcm == NULL)
+				continue;
+			snd_iprintf(buffer, "  Device: name=\"%s\", "
+				    "type=\"%s\", device=%i\n",
+				    cpcm->name,
+				    snd_hda_pcm_type_name[cpcm->pcm_type],
+				    cpcm->pcm->device);
+		}
+	}
+}
+
+static void print_amp_caps(struct snd_info_buffer *buffer,
+			   struct hda_codec *codec, hda_nid_t nid, int dir)
+{
+	unsigned int caps;
+	caps = 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);
+}
+
+/* is this a stereo widget or a stereo-to-mono mix? */
+static bool is_stereo_amps(struct hda_codec *codec, hda_nid_t nid,
+			   int dir, unsigned int wcaps, int indices)
+{
+	hda_nid_t conn;
+
+	if (wcaps & AC_WCAP_STEREO)
+		return true;
+	/* check for a stereo-to-mono mix; it must be:
+	 * only a single connection, only for input, and only a mixer widget
+	 */
+	if (indices != 1 || dir != HDA_INPUT ||
+	    get_wcaps_type(wcaps) != AC_WID_AUD_MIX)
+		return false;
+
+	if (snd_hda_get_raw_connections(codec, nid, &conn, 1) < 0)
+		return false;
+	/* the connection source is a stereo? */
+	wcaps = snd_hda_param_read(codec, conn, AC_PAR_AUDIO_WIDGET_CAP);
+	return !!(wcaps & AC_WCAP_STEREO);
+}
+
+static void print_amp_vals(struct snd_info_buffer *buffer,
+			   struct hda_codec *codec, hda_nid_t nid,
+			   int dir, unsigned int wcaps, int indices)
+{
+	unsigned int val;
+	bool stereo;
+	int i;
+
+	stereo = is_stereo_amps(codec, nid, dir, wcaps, indices);
+
+	dir = dir == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
+	for (i = 0; i < indices; i++) {
+		snd_iprintf(buffer, " [");
+		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);
+		if (stereo) {
+			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, "]");
+	}
+	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)
+{
+	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 = param_read(codec, nid, AC_PAR_PCM);
+	unsigned int stream = 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 = 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->core.vendor_id >> 16) == 0x10ec)
+			snd_iprintf(buffer, " R/L");
+		else {
+			if (caps & AC_PINCAP_HBR)
+				snd_iprintf(buffer, " HBR");
+			snd_iprintf(buffer, " HDMI");
+		}
+	}
+	if (caps & AC_PINCAP_DP)
+		snd_iprintf(buffer, " DP");
+	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 = 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);
+	unsigned char digi2 = digi1 >> 8;
+	unsigned char digi3 = digi1 >> 16;
+
+	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, " Non-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");
+	if (digi3 & AC_DIG3_KAE)
+		snd_iprintf(buffer, " KAE");
+	snd_iprintf(buffer, "\n");
+	snd_iprintf(buffer, "  Digital category: 0x%x\n",
+		    digi2 & AC_DIG2_CC);
+	snd_iprintf(buffer, "  IEC Coding Type: 0x%x\n",
+			digi3 & AC_DIG3_ICT);
+}
+
+static const char *get_pwr_state(u32 state)
+{
+	static const char * const buf[] = {
+		"D0", "D1", "D2", "D3", "D3cold"
+	};
+	if (state < ARRAY_SIZE(buf))
+		return buf[state];
+	return "UNKNOWN";
+}
+
+static void print_power_state(struct snd_info_buffer *buffer,
+			      struct hda_codec *codec, hda_nid_t nid)
+{
+	static char *names[] = {
+		[ilog2(AC_PWRST_D0SUP)]		= "D0",
+		[ilog2(AC_PWRST_D1SUP)]		= "D1",
+		[ilog2(AC_PWRST_D2SUP)]		= "D2",
+		[ilog2(AC_PWRST_D3SUP)]		= "D3",
+		[ilog2(AC_PWRST_D3COLDSUP)]	= "D3cold",
+		[ilog2(AC_PWRST_S3D3COLDSUP)]	= "S3D3cold",
+		[ilog2(AC_PWRST_CLKSTOP)]	= "CLKSTOP",
+		[ilog2(AC_PWRST_EPSS)]		= "EPSS",
+	};
+
+	int sup = param_read(codec, nid, AC_PAR_POWER_STATE);
+	int pwr = snd_hda_codec_read(codec, nid, 0,
+				     AC_VERB_GET_POWER_STATE, 0);
+	if (sup != -1)
+		snd_iprintf(buffer, "  Power states: %s\n",
+			    bits_names(sup, names, ARRAY_SIZE(names)));
+
+	snd_iprintf(buffer, "  Power: setting=%s, actual=%s",
+		    get_pwr_state(pwr & AC_PWRST_SETTING),
+		    get_pwr_state((pwr & AC_PWRST_ACTUAL) >>
+				  AC_PWRST_ACTUAL_SHIFT));
+	if (pwr & AC_PWRST_ERROR)
+		snd_iprintf(buffer, ", Error");
+	if (pwr & AC_PWRST_CLK_STOP_OK)
+		snd_iprintf(buffer, ", Clock-stop-OK");
+	if (pwr & AC_PWRST_SETTING_RESET)
+		snd_iprintf(buffer, ", Setting-reset");
+	snd_iprintf(buffer, "\n");
+}
+
+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 inline bool can_dump_coef(struct hda_codec *codec)
+{
+	switch (dump_coef) {
+	case 0: return false;
+	case 1: return true;
+	default: return codec->dump_coef;
+	}
+}
+
+static void print_proc_caps(struct snd_info_buffer *buffer,
+			    struct hda_codec *codec, hda_nid_t nid)
+{
+	unsigned int i, ncoeff, oldindex;
+	unsigned int proc_caps = param_read(codec, nid, AC_PAR_PROC_CAP);
+	ncoeff = (proc_caps & AC_PCAP_NUM_COEF) >> AC_PCAP_NUM_COEF_SHIFT;
+	snd_iprintf(buffer, "  Processing caps: benign=%d, ncoeff=%d\n",
+		    proc_caps & AC_PCAP_BENIGN, ncoeff);
+
+	if (!can_dump_coef(codec))
+		return;
+
+	/* Note: This is racy - another process could run in parallel and change
+	   the coef index too. */
+	oldindex = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_COEF_INDEX, 0);
+	for (i = 0; i < ncoeff; i++) {
+		unsigned int val;
+		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_COEF_INDEX, i);
+		val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_PROC_COEF,
+					 0);
+		snd_iprintf(buffer, "    Coeff 0x%02x: 0x%04x\n", i, val);
+	}
+	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_COEF_INDEX, oldindex);
+}
+
+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;
+	const hda_nid_t *list;
+	int cache_len;
+
+	if (conn_len > 1 &&
+	    wid_type != AC_WID_AUD_MIX &&
+	    wid_type != AC_WID_VOL_KNB &&
+	    wid_type != AC_WID_POWER)
+		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");
+	}
+
+	/* Get Cache connections info */
+	cache_len = snd_hda_get_conn_list(codec, nid, &list);
+	if (cache_len >= 0 && (cache_len != conn_len ||
+			      memcmp(list, conn, conn_len) != 0)) {
+		snd_iprintf(buffer, "  In-driver Connection: %d\n", cache_len);
+		if (cache_len > 0) {
+			snd_iprintf(buffer, "    ");
+			for (c = 0; c < cache_len; c++)
+				snd_iprintf(buffer, " 0x%02x", list[c]);
+			snd_iprintf(buffer, "\n");
+		}
+	}
+}
+
+static void print_gpio(struct snd_info_buffer *buffer,
+		       struct hda_codec *codec, hda_nid_t nid)
+{
+	unsigned int gpio =
+		param_read(codec, codec->core.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 */
+	print_nid_array(buffer, codec, nid, &codec->mixers);
+	print_nid_array(buffer, codec, nid, &codec->nids);
+}
+
+static void print_device_list(struct snd_info_buffer *buffer,
+			    struct hda_codec *codec, hda_nid_t nid)
+{
+	int i, curr = -1;
+	u8 dev_list[AC_MAX_DEV_LIST_LEN];
+	int devlist_len;
+
+	devlist_len = snd_hda_get_devices(codec, nid, dev_list,
+					AC_MAX_DEV_LIST_LEN);
+	snd_iprintf(buffer, "  Devices: %d\n", devlist_len);
+	if (devlist_len <= 0)
+		return;
+
+	curr = snd_hda_codec_read(codec, nid, 0,
+				AC_VERB_GET_DEVICE_SEL, 0);
+
+	for (i = 0; i < devlist_len; i++) {
+		if (i == curr)
+			snd_iprintf(buffer, "    *");
+		else
+			snd_iprintf(buffer, "     ");
+
+		snd_iprintf(buffer,
+			"Dev %02d: PD = %d, ELDV = %d, IA = %d\n", i,
+			!!(dev_list[i] & AC_DE_PD),
+			!!(dev_list[i] & AC_DE_ELDV),
+			!!(dev_list[i] & AC_DE_IA));
+	}
+}
+
+static void print_codec_core_info(struct hdac_device *codec,
+				  struct snd_info_buffer *buffer)
+{
+	snd_iprintf(buffer, "Codec: ");
+	if (codec->vendor_name && codec->chip_name)
+		snd_iprintf(buffer, "%s %s\n",
+			    codec->vendor_name, codec->chip_name);
+	else
+		snd_iprintf(buffer, "Not Set\n");
+	snd_iprintf(buffer, "Address: %d\n", codec->addr);
+	if (codec->afg)
+		snd_iprintf(buffer, "AFG Function Id: 0x%x (unsol %u)\n",
+			codec->afg_function_id, codec->afg_unsol);
+	if (codec->mfg)
+		snd_iprintf(buffer, "MFG Function Id: 0x%x (unsol %u)\n",
+			codec->mfg_function_id, codec->mfg_unsol);
+	snd_iprintf(buffer, "Vendor Id: 0x%08x\n", codec->vendor_id);
+	snd_iprintf(buffer, "Subsystem Id: 0x%08x\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");
+}
+
+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, fg;
+	int i, nodes;
+
+	print_codec_core_info(&codec->core, buffer);
+	fg = codec->core.afg;
+	if (!fg)
+		return;
+	snd_hda_power_up(codec);
+	snd_iprintf(buffer, "Default PCM:\n");
+	print_pcm_caps(buffer, codec, fg);
+	snd_iprintf(buffer, "Default Amp-In caps: ");
+	print_amp_caps(buffer, codec, fg, HDA_INPUT);
+	snd_iprintf(buffer, "Default Amp-Out caps: ");
+	print_amp_caps(buffer, codec, fg, HDA_OUTPUT);
+	snd_iprintf(buffer, "State of AFG node 0x%02x:\n", fg);
+	print_power_state(buffer, codec, fg);
+
+	nodes = snd_hda_get_sub_nodes(codec, fg, &nid);
+	if (! nid || nodes < 0) {
+		snd_iprintf(buffer, "Invalid AFG subtree\n");
+		snd_hda_power_down(codec);
+		return;
+	}
+
+	print_gpio(buffer, codec, fg);
+	if (codec->proc_widget_hook)
+		codec->proc_widget_hook(buffer, codec, fg);
+
+	for (i = 0; i < nodes; i++, nid++) {
+		unsigned int wid_caps =
+			param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
+		unsigned int wid_type = get_wcaps_type(wid_caps);
+		hda_nid_t *conn = NULL;
+		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 = get_wcaps_channels(wid_caps);
+			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");
+
+		print_nid_array(buffer, codec, nid, &codec->mixers);
+		print_nid_array(buffer, codec, nid, &codec->nids);
+		print_nid_pcms(buffer, codec, nid);
+
+		/* 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_num_raw_conns(codec, nid);
+			if (conn_len > 0) {
+				conn = kmalloc(sizeof(hda_nid_t) * conn_len,
+					       GFP_KERNEL);
+				if (!conn)
+					return;
+				if (snd_hda_get_raw_connections(codec, nid, conn,
+								conn_len) < 0)
+					conn_len = 0;
+			}
+		}
+
+		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: ");
+			if (wid_type == AC_WID_PIN ||
+			    (codec->single_adc_amp &&
+			     wid_type == AC_WID_AUD_IN))
+				print_amp_vals(buffer, codec, nid, HDA_INPUT,
+					       wid_caps, 1);
+			else
+				print_amp_vals(buffer, codec, nid, HDA_INPUT,
+					       wid_caps, 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: ");
+			if (wid_type == AC_WID_PIN &&
+			    codec->pin_amp_workaround)
+				print_amp_vals(buffer, codec, nid, HDA_OUTPUT,
+					       wid_caps, conn_len);
+			else
+				print_amp_vals(buffer, codec, nid, HDA_OUTPUT,
+					       wid_caps, 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_type == AC_WID_PIN && codec->dp_mst)
+			print_device_list(buffer, codec, nid);
+
+		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);
+
+		kfree(conn);
+	}
+	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->core.addr);
+	err = snd_card_proc_new(codec->card, name, &entry);
+	if (err < 0)
+		return err;
+
+	snd_info_set_text_ops(entry, codec, print_codec_info);
+	return 0;
+}
+