qlcnic: Fix mailbox completion handling during spurious interrupt

[linux/fpc-iii.git] / sound / pci / hda / 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 <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;
}