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hda_proc.c

/*
 * 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 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",
      };
      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 pcm, type;
      struct hda_pcm *cpcm;
      for (pcm = 0; pcm < codec->num_pcms; pcm++) {
            cpcm = &codec->pcm_info[pcm];
            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 = 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 {
                  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 = 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)
{
      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 = snd_hda_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)
            snd_iprintf(buffer, "  Power states: %s\n",
                      bits_names(sup, names, ARRAY_SIZE(names)));

      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 &&
          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");
      }
}

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 */
      print_nid_array(buffer, codec, nid, &codec->mixers);
      print_nid_array(buffer, codec, nid, &codec->nids);
}

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: ");
      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);
      snd_iprintf(buffer, "Function Id: 0x%x\n", codec->function_id);
      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");

      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 = get_wcaps_type(wid_caps);
            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 = 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_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: ");
                  if (wid_type == AC_WID_PIN &&
                      codec->pin_amp_workaround)
                        print_amp_vals(buffer, codec, nid, HDA_OUTPUT,
                                     wid_caps & AC_WCAP_STEREO,
                                     conn_len);
                  else
                        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;
}


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