Logo Search packages:      
Sourcecode: alsa-driver version File versions  Download package

hda_codec.c

/*
 * Universal Interface for Intel High Definition Audio Codec
 *
 * 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/delay.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include "hda_codec.h"
#include <sound/asoundef.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include "hda_local.h"
#include <sound/hda_hwdep.h>

/*
 * vendor / preset table
 */

struct hda_vendor_id {
      unsigned int id;
      const char *name;
};

/* codec vendor labels */
static struct hda_vendor_id hda_vendor_ids[] = {
      { 0x1002, "ATI" },
      { 0x1057, "Motorola" },
      { 0x1095, "Silicon Image" },
      { 0x10de, "Nvidia" },
      { 0x10ec, "Realtek" },
      { 0x1106, "VIA" },
      { 0x111d, "IDT" },
      { 0x11c1, "LSI" },
      { 0x11d4, "Analog Devices" },
      { 0x13f6, "C-Media" },
      { 0x14f1, "Conexant" },
      { 0x17e8, "Chrontel" },
      { 0x1854, "LG" },
      { 0x1aec, "Wolfson Microelectronics" },
      { 0x434d, "C-Media" },
      { 0x8086, "Intel" },
      { 0x8384, "SigmaTel" },
      {} /* terminator */
};

static DEFINE_MUTEX(preset_mutex);
static LIST_HEAD(hda_preset_tables);

int snd_hda_add_codec_preset(struct hda_codec_preset_list *preset)
{
      mutex_lock(&preset_mutex);
      list_add_tail(&preset->list, &hda_preset_tables);
      mutex_unlock(&preset_mutex);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_add_codec_preset);

int snd_hda_delete_codec_preset(struct hda_codec_preset_list *preset)
{
      mutex_lock(&preset_mutex);
      list_del(&preset->list);
      mutex_unlock(&preset_mutex);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_delete_codec_preset);

#ifdef CONFIG_SND_HDA_POWER_SAVE
static void hda_power_work(struct work_struct *work);
static void hda_keep_power_on(struct hda_codec *codec);
#else
static inline void hda_keep_power_on(struct hda_codec *codec) {}
#endif

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

const char *snd_hda_get_jack_connectivity(u32 cfg)
{
      static char *jack_locations[4] = { "Ext", "Int", "Sep", "Oth" };

      return jack_locations[(cfg >> (AC_DEFCFG_LOCATION_SHIFT + 4)) & 3];
}
EXPORT_SYMBOL_HDA(snd_hda_get_jack_connectivity);

const char *snd_hda_get_jack_type(u32 cfg)
{
      static char *jack_types[16] = {
            "Line Out", "Speaker", "HP Out", "CD",
            "SPDIF Out", "Digital Out", "Modem Line", "Modem Hand",
            "Line In", "Aux", "Mic", "Telephony",
            "SPDIF In", "Digitial In", "Reserved", "Other"
      };

      return jack_types[(cfg & AC_DEFCFG_DEVICE)
                        >> AC_DEFCFG_DEVICE_SHIFT];
}
EXPORT_SYMBOL_HDA(snd_hda_get_jack_type);

/*
 * Compose a 32bit command word to be sent to the HD-audio controller
 */
static inline unsigned int
make_codec_cmd(struct hda_codec *codec, hda_nid_t nid, int direct,
             unsigned int verb, unsigned int parm)
{
      u32 val;

      val = (u32)(codec->addr & 0x0f) << 28;
      val |= (u32)direct << 27;
      val |= (u32)nid << 20;
      val |= verb << 8;
      val |= parm;
      return val;
}

/**
 * snd_hda_codec_read - send a command and get the response
 * @codec: the HDA codec
 * @nid: NID to send the command
 * @direct: direct flag
 * @verb: the verb to send
 * @parm: the parameter for the verb
 *
 * Send a single command and read the corresponding response.
 *
 * Returns the obtained response value, or -1 for an error.
 */
unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid,
                        int direct,
                        unsigned int verb, unsigned int parm)
{
      struct hda_bus *bus = codec->bus;
      unsigned int res;

      res = make_codec_cmd(codec, nid, direct, verb, parm);
      snd_hda_power_up(codec);
      mutex_lock(&bus->cmd_mutex);
      if (!bus->ops.command(bus, res))
            res = bus->ops.get_response(bus);
      else
            res = (unsigned int)-1;
      mutex_unlock(&bus->cmd_mutex);
      snd_hda_power_down(codec);
      return res;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_read);

/**
 * snd_hda_codec_write - send a single command without waiting for response
 * @codec: the HDA codec
 * @nid: NID to send the command
 * @direct: direct flag
 * @verb: the verb to send
 * @parm: the parameter for the verb
 *
 * Send a single command without waiting for response.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int direct,
                   unsigned int verb, unsigned int parm)
{
      struct hda_bus *bus = codec->bus;
      unsigned int res;
      int err;

      res = make_codec_cmd(codec, nid, direct, verb, parm);
      snd_hda_power_up(codec);
      mutex_lock(&bus->cmd_mutex);
      err = bus->ops.command(bus, res);
      mutex_unlock(&bus->cmd_mutex);
      snd_hda_power_down(codec);
      return err;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_write);

/**
 * snd_hda_sequence_write - sequence writes
 * @codec: the HDA codec
 * @seq: VERB array to send
 *
 * Send the commands sequentially from the given array.
 * The array must be terminated with NID=0.
 */
void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
{
      for (; seq->nid; seq++)
            snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
}
EXPORT_SYMBOL_HDA(snd_hda_sequence_write);

/**
 * snd_hda_get_sub_nodes - get the range of sub nodes
 * @codec: the HDA codec
 * @nid: NID to parse
 * @start_id: the pointer to store the start NID
 *
 * Parse the NID and store the start NID of its sub-nodes.
 * Returns the number of sub-nodes.
 */
int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid,
                    hda_nid_t *start_id)
{
      unsigned int parm;

      parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT);
      if (parm == -1)
            return 0;
      *start_id = (parm >> 16) & 0x7fff;
      return (int)(parm & 0x7fff);
}
EXPORT_SYMBOL_HDA(snd_hda_get_sub_nodes);

/**
 * snd_hda_get_connections - get connection list
 * @codec: the HDA codec
 * @nid: NID to parse
 * @conn_list: connection list array
 * @max_conns: max. number of connections to store
 *
 * Parses the connection list of the given widget and stores the list
 * of NIDs.
 *
 * Returns the number of connections, or a negative error code.
 */
int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
                      hda_nid_t *conn_list, int max_conns)
{
      unsigned int parm;
      int i, conn_len, conns;
      unsigned int shift, num_elems, mask;
      hda_nid_t prev_nid;

      if (snd_BUG_ON(!conn_list || max_conns <= 0))
            return -EINVAL;

      parm = snd_hda_param_read(codec, nid, AC_PAR_CONNLIST_LEN);
      if (parm & AC_CLIST_LONG) {
            /* long form */
            shift = 16;
            num_elems = 2;
      } else {
            /* short form */
            shift = 8;
            num_elems = 4;
      }
      conn_len = parm & AC_CLIST_LENGTH;
      mask = (1 << (shift-1)) - 1;

      if (!conn_len)
            return 0; /* no connection */

      if (conn_len == 1) {
            /* single connection */
            parm = snd_hda_codec_read(codec, nid, 0,
                                AC_VERB_GET_CONNECT_LIST, 0);
            conn_list[0] = parm & mask;
            return 1;
      }

      /* multi connection */
      conns = 0;
      prev_nid = 0;
      for (i = 0; i < conn_len; i++) {
            int range_val;
            hda_nid_t val, n;

            if (i % num_elems == 0)
                  parm = snd_hda_codec_read(codec, nid, 0,
                                      AC_VERB_GET_CONNECT_LIST, i);
            range_val = !!(parm & (1 << (shift-1))); /* ranges */
            val = parm & mask;
            parm >>= shift;
            if (range_val) {
                  /* ranges between the previous and this one */
                  if (!prev_nid || prev_nid >= val) {
                        snd_printk(KERN_WARNING "hda_codec: "
                                 "invalid dep_range_val %x:%x\n",
                                 prev_nid, val);
                        continue;
                  }
                  for (n = prev_nid + 1; n <= val; n++) {
                        if (conns >= max_conns) {
                              snd_printk(KERN_ERR
                                       "Too many connections\n");
                              return -EINVAL;
                        }
                        conn_list[conns++] = n;
                  }
            } else {
                  if (conns >= max_conns) {
                        snd_printk(KERN_ERR "Too many connections\n");
                        return -EINVAL;
                  }
                  conn_list[conns++] = val;
            }
            prev_nid = val;
      }
      return conns;
}
EXPORT_SYMBOL_HDA(snd_hda_get_connections);


/**
 * snd_hda_queue_unsol_event - add an unsolicited event to queue
 * @bus: the BUS
 * @res: unsolicited event (lower 32bit of RIRB entry)
 * @res_ex: codec addr and flags (upper 32bit or RIRB entry)
 *
 * Adds the given event to the queue.  The events are processed in
 * the workqueue asynchronously.  Call this function in the interrupt
 * hanlder when RIRB receives an unsolicited event.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex)
{
      struct hda_bus_unsolicited *unsol;
      unsigned int wp;

      unsol = bus->unsol;
      if (!unsol)
            return 0;

      wp = (unsol->wp + 1) % HDA_UNSOL_QUEUE_SIZE;
      unsol->wp = wp;

      wp <<= 1;
      unsol->queue[wp] = res;
      unsol->queue[wp + 1] = res_ex;

      queue_work(bus->workq, &unsol->work);

      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_queue_unsol_event);

/*
 * process queued unsolicited events
 */
static void process_unsol_events(struct work_struct *work)
{
      struct hda_bus_unsolicited *unsol =
            container_of(work, struct hda_bus_unsolicited, work);
      struct hda_bus *bus = unsol->bus;
      struct hda_codec *codec;
      unsigned int rp, caddr, res;

      while (unsol->rp != unsol->wp) {
            rp = (unsol->rp + 1) % HDA_UNSOL_QUEUE_SIZE;
            unsol->rp = rp;
            rp <<= 1;
            res = unsol->queue[rp];
            caddr = unsol->queue[rp + 1];
            if (!(caddr & (1 << 4))) /* no unsolicited event? */
                  continue;
            codec = bus->caddr_tbl[caddr & 0x0f];
            if (codec && codec->patch_ops.unsol_event)
                  codec->patch_ops.unsol_event(codec, res);
      }
}

/*
 * initialize unsolicited queue
 */
static int init_unsol_queue(struct hda_bus *bus)
{
      struct hda_bus_unsolicited *unsol;

      if (bus->unsol) /* already initialized */
            return 0;

      unsol = kzalloc(sizeof(*unsol), GFP_KERNEL);
      if (!unsol) {
            snd_printk(KERN_ERR "hda_codec: "
                     "can't allocate unsolicited queue\n");
            return -ENOMEM;
      }
      INIT_WORK(&unsol->work, process_unsol_events);
      unsol->bus = bus;
      bus->unsol = unsol;
      return 0;
}

/*
 * destructor
 */
static void snd_hda_codec_free(struct hda_codec *codec);

static int snd_hda_bus_free(struct hda_bus *bus)
{
      struct hda_codec *codec, *n;

      if (!bus)
            return 0;
      if (bus->workq)
            flush_workqueue(bus->workq);
      if (bus->unsol)
            kfree(bus->unsol);
      list_for_each_entry_safe(codec, n, &bus->codec_list, list) {
            snd_hda_codec_free(codec);
      }
      if (bus->ops.private_free)
            bus->ops.private_free(bus);
      if (bus->workq)
            destroy_workqueue(bus->workq);
      kfree(bus);
      return 0;
}

static int snd_hda_bus_dev_free(struct snd_device *device)
{
      struct hda_bus *bus = device->device_data;
      bus->shutdown = 1;
      return snd_hda_bus_free(bus);
}

#ifdef CONFIG_SND_HDA_HWDEP
static int snd_hda_bus_dev_register(struct snd_device *device)
{
      struct hda_bus *bus = device->device_data;
      struct hda_codec *codec;
      list_for_each_entry(codec, &bus->codec_list, list) {
            snd_hda_hwdep_add_sysfs(codec);
      }
      return 0;
}
#else
#define snd_hda_bus_dev_register    NULL
#endif

/**
 * snd_hda_bus_new - create a HDA bus
 * @card: the card entry
 * @temp: the template for hda_bus information
 * @busp: the pointer to store the created bus instance
 *
 * Returns 0 if successful, or a negative error code.
 */
int /*__devinit*/ snd_hda_bus_new(struct snd_card *card,
                        const struct hda_bus_template *temp,
                        struct hda_bus **busp)
{
      struct hda_bus *bus;
      int err;
      static struct snd_device_ops dev_ops = {
            .dev_register = snd_hda_bus_dev_register,
            .dev_free = snd_hda_bus_dev_free,
      };

      if (snd_BUG_ON(!temp))
            return -EINVAL;
      if (snd_BUG_ON(!temp->ops.command || !temp->ops.get_response))
            return -EINVAL;

      if (busp)
            *busp = NULL;

      bus = kzalloc(sizeof(*bus), GFP_KERNEL);
      if (bus == NULL) {
            snd_printk(KERN_ERR "can't allocate struct hda_bus\n");
            return -ENOMEM;
      }

      bus->card = card;
      bus->private_data = temp->private_data;
      bus->pci = temp->pci;
      bus->modelname = temp->modelname;
      bus->power_save = temp->power_save;
      bus->ops = temp->ops;

      mutex_init(&bus->cmd_mutex);
      INIT_LIST_HEAD(&bus->codec_list);

      snprintf(bus->workq_name, sizeof(bus->workq_name),
             "hd-audio%d", card->number);
      bus->workq = create_singlethread_workqueue(bus->workq_name);
      if (!bus->workq) {
            snd_printk(KERN_ERR "cannot create workqueue %s\n",
                     bus->workq_name);
            kfree(bus);
            return -ENOMEM;
      }

      err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops);
      if (err < 0) {
            snd_hda_bus_free(bus);
            return err;
      }
      if (busp)
            *busp = bus;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_bus_new);

#ifdef CONFIG_SND_HDA_GENERIC
#define is_generic_config(codec) \
      (codec->modelname && !strcmp(codec->modelname, "generic"))
#else
#define is_generic_config(codec)    0
#endif

#ifdef MODULE
#define HDA_MODREQ_MAX_COUNT  2     /* two request_modules()'s */
#else
#define HDA_MODREQ_MAX_COUNT  0     /* all presets are statically linked */
#endif

/*
 * find a matching codec preset
 */
static const struct hda_codec_preset *
find_codec_preset(struct hda_codec *codec)
{
      struct hda_codec_preset_list *tbl;
      const struct hda_codec_preset *preset;
      int mod_requested = 0;

      if (is_generic_config(codec))
            return NULL; /* use the generic parser */

 again:
      mutex_lock(&preset_mutex);
      list_for_each_entry(tbl, &hda_preset_tables, list) {
            if (!try_module_get(tbl->owner)) {
                  snd_printk(KERN_ERR "hda_codec: cannot module_get\n");
                  continue;
            }
            for (preset = tbl->preset; preset->id; preset++) {
                  u32 mask = preset->mask;
                  if (preset->afg && preset->afg != codec->afg)
                        continue;
                  if (preset->mfg && preset->mfg != codec->mfg)
                        continue;
                  if (!mask)
                        mask = ~0;
                  if (preset->id == (codec->vendor_id & mask) &&
                      (!preset->rev ||
                       preset->rev == codec->revision_id)) {
                        mutex_unlock(&preset_mutex);
                        codec->owner = tbl->owner;
                        return preset;
                  }
            }
            module_put(tbl->owner);
      }
      mutex_unlock(&preset_mutex);

      if (mod_requested < HDA_MODREQ_MAX_COUNT) {
            char name[32];
            if (!mod_requested)
                  snprintf(name, sizeof(name), "snd-hda-codec-id:%08x",
                         codec->vendor_id);
            else
                  snprintf(name, sizeof(name), "snd-hda-codec-id:%04x*",
                         (codec->vendor_id >> 16) & 0xffff);
            request_module(name);
            mod_requested++;
            goto again;
      }
      return NULL;
}

/*
 * get_codec_name - store the codec name
 */
static int get_codec_name(struct hda_codec *codec)
{
      const struct hda_vendor_id *c;
      const char *vendor = NULL;
      u16 vendor_id = codec->vendor_id >> 16;
      char tmp[16], name[32];

      for (c = hda_vendor_ids; c->id; c++) {
            if (c->id == vendor_id) {
                  vendor = c->name;
                  break;
            }
      }
      if (!vendor) {
            sprintf(tmp, "Generic %04x", vendor_id);
            vendor = tmp;
      }
      if (codec->preset && codec->preset->name)
            snprintf(name, sizeof(name), "%s %s", vendor,
                   codec->preset->name);
      else
            snprintf(name, sizeof(name), "%s ID %x", vendor,
                   codec->vendor_id & 0xffff);
      codec->name = kstrdup(name, GFP_KERNEL);
      if (!codec->name)
            return -ENOMEM;
      return 0;
}

/*
 * look for an AFG and MFG nodes
 */
static void /*__devinit*/ setup_fg_nodes(struct hda_codec *codec)
{
      int i, total_nodes, function_id;
      hda_nid_t nid;

      total_nodes = snd_hda_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
      for (i = 0; i < total_nodes; i++, nid++) {
            function_id = snd_hda_param_read(codec, nid,
                                    AC_PAR_FUNCTION_TYPE) & 0xff;
            switch (function_id) {
            case AC_GRP_AUDIO_FUNCTION:
                  codec->afg = nid;
                  codec->function_id = function_id;
                  break;
            case AC_GRP_MODEM_FUNCTION:
                  codec->mfg = nid;
                  codec->function_id = function_id;
                  break;
            default:
                  break;
            }
      }
}

/*
 * read widget caps for each widget and store in cache
 */
static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
{
      int i;
      hda_nid_t nid;

      codec->num_nodes = snd_hda_get_sub_nodes(codec, fg_node,
                                     &codec->start_nid);
      codec->wcaps = kmalloc(codec->num_nodes * 4, GFP_KERNEL);
      if (!codec->wcaps)
            return -ENOMEM;
      nid = codec->start_nid;
      for (i = 0; i < codec->num_nodes; i++, nid++)
            codec->wcaps[i] = snd_hda_param_read(codec, nid,
                                         AC_PAR_AUDIO_WIDGET_CAP);
      return 0;
}

/* read all pin default configurations and save codec->init_pins */
static int read_pin_defaults(struct hda_codec *codec)
{
      int i;
      hda_nid_t nid = codec->start_nid;

      for (i = 0; i < codec->num_nodes; i++, nid++) {
            struct hda_pincfg *pin;
            unsigned int wcaps = get_wcaps(codec, nid);
            unsigned int wid_type = (wcaps & AC_WCAP_TYPE) >>
                        AC_WCAP_TYPE_SHIFT;
            if (wid_type != AC_WID_PIN)
                  continue;
            pin = snd_array_new(&codec->init_pins);
            if (!pin)
                  return -ENOMEM;
            pin->nid = nid;
            pin->cfg = snd_hda_codec_read(codec, nid, 0,
                                    AC_VERB_GET_CONFIG_DEFAULT, 0);
      }
      return 0;
}

/* look up the given pin config list and return the item matching with NID */
static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec,
                               struct snd_array *array,
                               hda_nid_t nid)
{
      int i;
      for (i = 0; i < array->used; i++) {
            struct hda_pincfg *pin = snd_array_elem(array, i);
            if (pin->nid == nid)
                  return pin;
      }
      return NULL;
}

/* write a config value for the given NID */
static void set_pincfg(struct hda_codec *codec, hda_nid_t nid,
                   unsigned int cfg)
{
      int i;
      for (i = 0; i < 4; i++) {
            snd_hda_codec_write(codec, nid, 0,
                            AC_VERB_SET_CONFIG_DEFAULT_BYTES_0 + i,
                            cfg & 0xff);
            cfg >>= 8;
      }
}

/* set the current pin config value for the given NID.
 * the value is cached, and read via snd_hda_codec_get_pincfg()
 */
int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
                   hda_nid_t nid, unsigned int cfg)
{
      struct hda_pincfg *pin;
      unsigned int oldcfg;

      oldcfg = snd_hda_codec_get_pincfg(codec, nid);
      pin = look_up_pincfg(codec, list, nid);
      if (!pin) {
            pin = snd_array_new(list);
            if (!pin)
                  return -ENOMEM;
            pin->nid = nid;
      }
      pin->cfg = cfg;

      /* change only when needed; e.g. if the pincfg is already present
       * in user_pins[], don't write it
       */
      cfg = snd_hda_codec_get_pincfg(codec, nid);
      if (oldcfg != cfg)
            set_pincfg(codec, nid, cfg);
      return 0;
}

int snd_hda_codec_set_pincfg(struct hda_codec *codec,
                       hda_nid_t nid, unsigned int cfg)
{
      return snd_hda_add_pincfg(codec, &codec->driver_pins, nid, cfg);
}
EXPORT_SYMBOL_HDA(snd_hda_codec_set_pincfg);

/* get the current pin config value of the given pin NID */
unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
{
      struct hda_pincfg *pin;

#ifdef CONFIG_SND_HDA_HWDEP
      pin = look_up_pincfg(codec, &codec->user_pins, nid);
      if (pin)
            return pin->cfg;
#endif
      pin = look_up_pincfg(codec, &codec->driver_pins, nid);
      if (pin)
            return pin->cfg;
      pin = look_up_pincfg(codec, &codec->init_pins, nid);
      if (pin)
            return pin->cfg;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_get_pincfg);

/* restore all current pin configs */
static void restore_pincfgs(struct hda_codec *codec)
{
      int i;
      for (i = 0; i < codec->init_pins.used; i++) {
            struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
            set_pincfg(codec, pin->nid,
                     snd_hda_codec_get_pincfg(codec, pin->nid));
      }
}

static void init_hda_cache(struct hda_cache_rec *cache,
                     unsigned int record_size);
static void free_hda_cache(struct hda_cache_rec *cache);

/* restore the initial pin cfgs and release all pincfg lists */
static void restore_init_pincfgs(struct hda_codec *codec)
{
      /* first free driver_pins and user_pins, then call restore_pincfg
       * so that only the values in init_pins are restored
       */
      snd_array_free(&codec->driver_pins);
#ifdef CONFIG_SND_HDA_HWDEP
      snd_array_free(&codec->user_pins);
#endif
      restore_pincfgs(codec);
      snd_array_free(&codec->init_pins);
}

/*
 * codec destructor
 */
static void snd_hda_codec_free(struct hda_codec *codec)
{
      if (!codec)
            return;
      restore_init_pincfgs(codec);
#ifdef CONFIG_SND_HDA_POWER_SAVE
      cancel_delayed_work(&codec->power_work);
      flush_workqueue(codec->bus->workq);
#endif
      list_del(&codec->list);
      snd_array_free(&codec->mixers);
      codec->bus->caddr_tbl[codec->addr] = NULL;
      if (codec->patch_ops.free)
            codec->patch_ops.free(codec);
      module_put(codec->owner);
      free_hda_cache(&codec->amp_cache);
      free_hda_cache(&codec->cmd_cache);
      kfree(codec->name);
      kfree(codec->modelname);
      kfree(codec->wcaps);
      kfree(codec);
}

static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
                        unsigned int power_state);

/**
 * snd_hda_codec_new - create a HDA codec
 * @bus: the bus to assign
 * @codec_addr: the codec address
 * @codecp: the pointer to store the generated codec
 *
 * Returns 0 if successful, or a negative error code.
 */
int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
                            int do_init, struct hda_codec **codecp)
{
      struct hda_codec *codec;
      char component[31];
      int err;

      if (snd_BUG_ON(!bus))
            return -EINVAL;
      if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
            return -EINVAL;

      if (bus->caddr_tbl[codec_addr]) {
            snd_printk(KERN_ERR "hda_codec: "
                     "address 0x%x is already occupied\n", codec_addr);
            return -EBUSY;
      }

      codec = kzalloc(sizeof(*codec), GFP_KERNEL);
      if (codec == NULL) {
            snd_printk(KERN_ERR "can't allocate struct hda_codec\n");
            return -ENOMEM;
      }

      codec->bus = bus;
      codec->addr = codec_addr;
      mutex_init(&codec->spdif_mutex);
      mutex_init(&codec->control_mutex);
      init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info));
      init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head));
      snd_array_init(&codec->mixers, sizeof(struct snd_kcontrol *), 32);
      snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
      snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
      if (codec->bus->modelname) {
            codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
            if (!codec->modelname) {
                  snd_hda_codec_free(codec);
                  return -ENODEV;
            }
      }

#ifdef CONFIG_SND_HDA_POWER_SAVE
      INIT_DELAYED_WORK(&codec->power_work, hda_power_work);
      /* snd_hda_codec_new() marks the codec as power-up, and leave it as is.
       * the caller has to power down appropriatley after initialization
       * phase.
       */
      hda_keep_power_on(codec);
#endif

      list_add_tail(&codec->list, &bus->codec_list);
      bus->caddr_tbl[codec_addr] = codec;

      codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT,
                                    AC_PAR_VENDOR_ID);
      if (codec->vendor_id == -1)
            /* read again, hopefully the access method was corrected
             * in the last read...
             */
            codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT,
                                          AC_PAR_VENDOR_ID);
      codec->subsystem_id = snd_hda_param_read(codec, AC_NODE_ROOT,
                                     AC_PAR_SUBSYSTEM_ID);
      codec->revision_id = snd_hda_param_read(codec, AC_NODE_ROOT,
                                    AC_PAR_REV_ID);

      setup_fg_nodes(codec);
      if (!codec->afg && !codec->mfg) {
            snd_printdd("hda_codec: no AFG or MFG node found\n");
            err = -ENODEV;
            goto error;
      }

      err = read_widget_caps(codec, codec->afg ? codec->afg : codec->mfg);
      if (err < 0) {
            snd_printk(KERN_ERR "hda_codec: cannot malloc\n");
            goto error;
      }
      err = read_pin_defaults(codec);
      if (err < 0)
            goto error;

      if (!codec->subsystem_id) {
            hda_nid_t nid = codec->afg ? codec->afg : codec->mfg;
            codec->subsystem_id =
                  snd_hda_codec_read(codec, nid, 0,
                                 AC_VERB_GET_SUBSYSTEM_ID, 0);
      }
      if (bus->modelname)
            codec->modelname = kstrdup(bus->modelname, GFP_KERNEL);

      /* power-up all before initialization */
      hda_set_power_state(codec,
                      codec->afg ? codec->afg : codec->mfg,
                      AC_PWRST_D0);

      if (do_init) {
            err = snd_hda_codec_configure(codec);
            if (err < 0)
                  goto error;
      }
      snd_hda_codec_proc_new(codec);

      snd_hda_create_hwdep(codec);

      sprintf(component, "HDA:%08x,%08x,%08x", codec->vendor_id,
            codec->subsystem_id, codec->revision_id);
      snd_component_add(codec->bus->card, component);

      if (codecp)
            *codecp = codec;
      return 0;

 error:
      snd_hda_codec_free(codec);
      return err;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_new);

int snd_hda_codec_configure(struct hda_codec *codec)
{
      int err;

      codec->preset = find_codec_preset(codec);
      if (!codec->name) {
            err = get_codec_name(codec);
            if (err < 0)
                  return err;
      }
      /* audio codec should override the mixer name */
      if (codec->afg || !*codec->bus->card->mixername)
            strlcpy(codec->bus->card->mixername, codec->name,
                  sizeof(codec->bus->card->mixername));

      if (is_generic_config(codec)) {
            err = snd_hda_parse_generic_codec(codec);
            goto patched;
      }
      if (codec->preset && codec->preset->patch) {
            err = codec->preset->patch(codec);
            goto patched;
      }

      /* call the default parser */
      err = snd_hda_parse_generic_codec(codec);
      if (err < 0)
            printk(KERN_ERR "hda-codec: No codec parser is available\n");

 patched:
      if (!err && codec->patch_ops.unsol_event)
            err = init_unsol_queue(codec->bus);
      return err;
}

/**
 * snd_hda_codec_setup_stream - set up the codec for streaming
 * @codec: the CODEC to set up
 * @nid: the NID to set up
 * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
 * @channel_id: channel id to pass, zero based.
 * @format: stream format.
 */
void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
                        u32 stream_tag,
                        int channel_id, int format)
{
      if (!nid)
            return;

      snd_printdd("hda_codec_setup_stream: "
                "NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
                nid, stream_tag, channel_id, format);
      snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID,
                      (stream_tag << 4) | channel_id);
      msleep(1);
      snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, format);
}
EXPORT_SYMBOL_HDA(snd_hda_codec_setup_stream);

void snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid)
{
      if (!nid)
            return;

      snd_printdd("hda_codec_cleanup_stream: NID=0x%x\n", nid);
      snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0);
#if 0 /* keep the format */
      msleep(1);
      snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0);
#endif
}
EXPORT_SYMBOL_HDA(snd_hda_codec_cleanup_stream);

/*
 * amp access functions
 */

/* FIXME: more better hash key? */
#define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + ((idx) << 16) + ((dir) << 24))
#define HDA_HASH_PINCAP_KEY(nid) (u32)((nid) + (0x02 << 24))
#define INFO_AMP_CAPS   (1<<0)
#define INFO_AMP_VOL(ch)      (1 << (1 + (ch)))

/* initialize the hash table */
static void /*__devinit*/ init_hda_cache(struct hda_cache_rec *cache,
                             unsigned int record_size)
{
      memset(cache, 0, sizeof(*cache));
      memset(cache->hash, 0xff, sizeof(cache->hash));
      snd_array_init(&cache->buf, record_size, 64);
}

static void free_hda_cache(struct hda_cache_rec *cache)
{
      snd_array_free(&cache->buf);
}

/* query the hash.  allocate an entry if not found. */
static struct hda_cache_head  *get_alloc_hash(struct hda_cache_rec *cache,
                                    u32 key)
{
      u16 idx = key % (u16)ARRAY_SIZE(cache->hash);
      u16 cur = cache->hash[idx];
      struct hda_cache_head *info;

      while (cur != 0xffff) {
            info = snd_array_elem(&cache->buf, cur);
            if (info->key == key)
                  return info;
            cur = info->next;
      }

      /* add a new hash entry */
      info = snd_array_new(&cache->buf);
      if (!info)
            return NULL;
      cur = snd_array_index(&cache->buf, info);
      info->key = key;
      info->val = 0;
      info->next = cache->hash[idx];
      cache->hash[idx] = cur;

      return info;
}

/* query and allocate an amp hash entry */
static inline struct hda_amp_info *
get_alloc_amp_hash(struct hda_codec *codec, u32 key)
{
      return (struct hda_amp_info *)get_alloc_hash(&codec->amp_cache, key);
}

/*
 * query AMP capabilities for the given widget and direction
 */
u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
{
      struct hda_amp_info *info;

      info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, 0));
      if (!info)
            return 0;
      if (!(info->head.val & INFO_AMP_CAPS)) {
            if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
                  nid = codec->afg;
            info->amp_caps = snd_hda_param_read(codec, nid,
                                        direction == HDA_OUTPUT ?
                                        AC_PAR_AMP_OUT_CAP :
                                        AC_PAR_AMP_IN_CAP);
            if (info->amp_caps)
                  info->head.val |= INFO_AMP_CAPS;
      }
      return info->amp_caps;
}
EXPORT_SYMBOL_HDA(query_amp_caps);

int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
                        unsigned int caps)
{
      struct hda_amp_info *info;

      info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, dir, 0));
      if (!info)
            return -EINVAL;
      info->amp_caps = caps;
      info->head.val |= INFO_AMP_CAPS;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_override_amp_caps);

u32 snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid)
{
      struct hda_amp_info *info;

      info = get_alloc_amp_hash(codec, HDA_HASH_PINCAP_KEY(nid));
      if (!info)
            return 0;
      if (!info->head.val) {
            info->amp_caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
            info->head.val |= INFO_AMP_CAPS;
      }
      return info->amp_caps;
}
EXPORT_SYMBOL_HDA(snd_hda_query_pin_caps);

/*
 * read the current volume to info
 * if the cache exists, read the cache value.
 */
static unsigned int get_vol_mute(struct hda_codec *codec,
                         struct hda_amp_info *info, hda_nid_t nid,
                         int ch, int direction, int index)
{
      u32 val, parm;

      if (info->head.val & INFO_AMP_VOL(ch))
            return info->vol[ch];

      parm = ch ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT;
      parm |= direction == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
      parm |= index;
      val = snd_hda_codec_read(codec, nid, 0,
                         AC_VERB_GET_AMP_GAIN_MUTE, parm);
      info->vol[ch] = val & 0xff;
      info->head.val |= INFO_AMP_VOL(ch);
      return info->vol[ch];
}

/*
 * write the current volume in info to the h/w and update the cache
 */
static void put_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
                   hda_nid_t nid, int ch, int direction, int index,
                   int val)
{
      u32 parm;

      parm = ch ? AC_AMP_SET_RIGHT : AC_AMP_SET_LEFT;
      parm |= direction == HDA_OUTPUT ? AC_AMP_SET_OUTPUT : AC_AMP_SET_INPUT;
      parm |= index << AC_AMP_SET_INDEX_SHIFT;
      parm |= val;
      snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, parm);
      info->vol[ch] = val;
}

/*
 * read AMP value.  The volume is between 0 to 0x7f, 0x80 = mute bit.
 */
int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch,
                     int direction, int index)
{
      struct hda_amp_info *info;
      info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
      if (!info)
            return 0;
      return get_vol_mute(codec, info, nid, ch, direction, index);
}
EXPORT_SYMBOL_HDA(snd_hda_codec_amp_read);

/*
 * update the AMP value, mask = bit mask to set, val = the value
 */
int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
                       int direction, int idx, int mask, int val)
{
      struct hda_amp_info *info;

      info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));
      if (!info)
            return 0;
      val &= mask;
      val |= get_vol_mute(codec, info, nid, ch, direction, idx) & ~mask;
      if (info->vol[ch] == val)
            return 0;
      put_vol_mute(codec, info, nid, ch, direction, idx, val);
      return 1;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_amp_update);

/*
 * update the AMP stereo with the same mask and value
 */
int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
                       int direction, int idx, int mask, int val)
{
      int ch, ret = 0;
      for (ch = 0; ch < 2; ch++)
            ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
                                    idx, mask, val);
      return ret;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_amp_stereo);

#ifdef SND_HDA_NEEDS_RESUME
/* resume the all amp commands from the cache */
void snd_hda_codec_resume_amp(struct hda_codec *codec)
{
      struct hda_amp_info *buffer = codec->amp_cache.buf.list;
      int i;

      for (i = 0; i < codec->amp_cache.buf.used; i++, buffer++) {
            u32 key = buffer->head.key;
            hda_nid_t nid;
            unsigned int idx, dir, ch;
            if (!key)
                  continue;
            nid = key & 0xff;
            idx = (key >> 16) & 0xff;
            dir = (key >> 24) & 0xff;
            for (ch = 0; ch < 2; ch++) {
                  if (!(buffer->head.val & INFO_AMP_VOL(ch)))
                        continue;
                  put_vol_mute(codec, buffer, nid, ch, dir, idx,
                             buffer->vol[ch]);
            }
      }
}
EXPORT_SYMBOL_HDA(snd_hda_codec_resume_amp);
#endif /* SND_HDA_NEEDS_RESUME */

/* volume */
int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
                          struct snd_ctl_elem_info *uinfo)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      u16 nid = get_amp_nid(kcontrol);
      u8 chs = get_amp_channels(kcontrol);
      int dir = get_amp_direction(kcontrol);
      unsigned int ofs = get_amp_offset(kcontrol);
      u32 caps;

      caps = query_amp_caps(codec, nid, dir);
      /* num steps */
      caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
      if (!caps) {
            printk(KERN_WARNING "hda_codec: "
                   "num_steps = 0 for NID=0x%x (ctl = %s)\n", nid,
                   kcontrol->id.name);
            return -EINVAL;
      }
      if (ofs < caps)
            caps -= ofs;
      uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = chs == 3 ? 2 : 1;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = caps;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_volume_info);


static inline unsigned int
read_amp_value(struct hda_codec *codec, hda_nid_t nid,
             int ch, int dir, int idx, unsigned int ofs)
{
      unsigned int val;
      val = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
      val &= HDA_AMP_VOLMASK;
      if (val >= ofs)
            val -= ofs;
      else
            val = 0;
      return val;
}

static inline int
update_amp_value(struct hda_codec *codec, hda_nid_t nid,
             int ch, int dir, int idx, unsigned int ofs,
             unsigned int val)
{
      if (val > 0)
            val += ofs;
      return snd_hda_codec_amp_update(codec, nid, ch, dir, idx,
                              HDA_AMP_VOLMASK, val);
}

int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = get_amp_nid(kcontrol);
      int chs = get_amp_channels(kcontrol);
      int dir = get_amp_direction(kcontrol);
      int idx = get_amp_index(kcontrol);
      unsigned int ofs = get_amp_offset(kcontrol);
      long *valp = ucontrol->value.integer.value;

      if (chs & 1)
            *valp++ = read_amp_value(codec, nid, 0, dir, idx, ofs);
      if (chs & 2)
            *valp = read_amp_value(codec, nid, 1, dir, idx, ofs);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_volume_get);

int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = get_amp_nid(kcontrol);
      int chs = get_amp_channels(kcontrol);
      int dir = get_amp_direction(kcontrol);
      int idx = get_amp_index(kcontrol);
      unsigned int ofs = get_amp_offset(kcontrol);
      long *valp = ucontrol->value.integer.value;
      int change = 0;

      snd_hda_power_up(codec);
      if (chs & 1) {
            change = update_amp_value(codec, nid, 0, dir, idx, ofs, *valp);
            valp++;
      }
      if (chs & 2)
            change |= update_amp_value(codec, nid, 1, dir, idx, ofs, *valp);
      snd_hda_power_down(codec);
      return change;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_volume_put);

int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
                    unsigned int size, unsigned int __user *_tlv)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = get_amp_nid(kcontrol);
      int dir = get_amp_direction(kcontrol);
      unsigned int ofs = get_amp_offset(kcontrol);
      u32 caps, val1, val2;

      if (size < 4 * sizeof(unsigned int))
            return -ENOMEM;
      caps = query_amp_caps(codec, nid, dir);
      val2 = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
      val2 = (val2 + 1) * 25;
      val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
      val1 += ofs;
      val1 = ((int)val1) * ((int)val2);
      if (put_user(SNDRV_CTL_TLVT_DB_SCALE, _tlv))
            return -EFAULT;
      if (put_user(2 * sizeof(unsigned int), _tlv + 1))
            return -EFAULT;
      if (put_user(val1, _tlv + 2))
            return -EFAULT;
      if (put_user(val2, _tlv + 3))
            return -EFAULT;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_tlv);

/*
 * set (static) TLV for virtual master volume; recalculated as max 0dB
 */
void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
                       unsigned int *tlv)
{
      u32 caps;
      int nums, step;

      caps = query_amp_caps(codec, nid, dir);
      nums = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
      step = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
      step = (step + 1) * 25;
      tlv[0] = SNDRV_CTL_TLVT_DB_SCALE;
      tlv[1] = 2 * sizeof(unsigned int);
      tlv[2] = -nums * step;
      tlv[3] = step;
}
EXPORT_SYMBOL_HDA(snd_hda_set_vmaster_tlv);

/* find a mixer control element with the given name */
static struct snd_kcontrol *
_snd_hda_find_mixer_ctl(struct hda_codec *codec,
                  const char *name, int idx)
{
      struct snd_ctl_elem_id id;
      memset(&id, 0, sizeof(id));
      id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
      id.index = idx;
      strcpy(id.name, name);
      return snd_ctl_find_id(codec->bus->card, &id);
}

struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
                                  const char *name)
{
      return _snd_hda_find_mixer_ctl(codec, name, 0);
}
EXPORT_SYMBOL_HDA(snd_hda_find_mixer_ctl);

/* Add a control element and assign to the codec */
int snd_hda_ctl_add(struct hda_codec *codec, struct snd_kcontrol *kctl)
{
      int err;
      struct snd_kcontrol **knewp;

      err = snd_ctl_add(codec->bus->card, kctl);
      if (err < 0)
            return err;
      knewp = snd_array_new(&codec->mixers);
      if (!knewp)
            return -ENOMEM;
      *knewp = kctl;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_ctl_add);

/* Clear all controls assigned to the given codec */
void snd_hda_ctls_clear(struct hda_codec *codec)
{
      int i;
      struct snd_kcontrol **kctls = codec->mixers.list;
      for (i = 0; i < codec->mixers.used; i++)
            snd_ctl_remove(codec->bus->card, kctls[i]);
      snd_array_free(&codec->mixers);
}

/* pseudo device locking
 * toggle card->shutdown to allow/disallow the device access (as a hack)
 */
static int hda_lock_devices(struct snd_card *card)
{
      spin_lock(&card->files_lock);
      if (card->shutdown) {
            spin_unlock(&card->files_lock);
            return -EINVAL;
      }
      card->shutdown = 1;
      spin_unlock(&card->files_lock);
      return 0;
}

static void hda_unlock_devices(struct snd_card *card)
{
      spin_lock(&card->files_lock);
      card->shutdown = 0;
      spin_unlock(&card->files_lock);
}

int snd_hda_codec_reset(struct hda_codec *codec)
{
      struct snd_card *card = codec->bus->card;
      int i, pcm;

      if (hda_lock_devices(card) < 0)
            return -EBUSY;
      /* check whether the codec isn't used by any mixer or PCM streams */
      if (!list_empty(&card->ctl_files)) {
            hda_unlock_devices(card);
            return -EBUSY;
      }
      for (pcm = 0; pcm < codec->num_pcms; pcm++) {
            struct hda_pcm *cpcm = &codec->pcm_info[pcm];
            if (!cpcm->pcm)
                  continue;
            if (cpcm->pcm->streams[0].substream_opened ||
                cpcm->pcm->streams[1].substream_opened) {
                  hda_unlock_devices(card);
                  return -EBUSY;
            }
      }

      /* OK, let it free */

#ifdef CONFIG_SND_HDA_POWER_SAVE
      cancel_delayed_work(&codec->power_work);
      flush_workqueue(codec->bus->workq);
#endif
      snd_hda_ctls_clear(codec);
      /* relase PCMs */
      for (i = 0; i < codec->num_pcms; i++) {
            if (codec->pcm_info[i].pcm) {
                  snd_device_free(card, codec->pcm_info[i].pcm);
                  clear_bit(codec->pcm_info[i].device,
                          codec->bus->pcm_dev_bits);
            }
      }
      if (codec->patch_ops.free)
            codec->patch_ops.free(codec);
      codec->proc_widget_hook = NULL;
      codec->spec = NULL;
      free_hda_cache(&codec->amp_cache);
      free_hda_cache(&codec->cmd_cache);
      init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info));
      init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head));
      /* free only driver_pins so that init_pins + user_pins are restored */
      snd_array_free(&codec->driver_pins);
      restore_pincfgs(codec);
      codec->num_pcms = 0;
      codec->pcm_info = NULL;
      codec->preset = NULL;
      memset(&codec->patch_ops, 0, sizeof(codec->patch_ops));
      codec->slave_dig_outs = NULL;
      codec->spdif_status_reset = 0;
      module_put(codec->owner);
      codec->owner = NULL;

      /* allow device access again */
      hda_unlock_devices(card);
      return 0;
}

/* create a virtual master control and add slaves */
int snd_hda_add_vmaster(struct hda_codec *codec, char *name,
                  unsigned int *tlv, const char **slaves)
{
      struct snd_kcontrol *kctl;
      const char **s;
      int err;

      for (s = slaves; *s && !snd_hda_find_mixer_ctl(codec, *s); s++)
            ;
      if (!*s) {
            snd_printdd("No slave found for %s\n", name);
            return 0;
      }
      kctl = snd_ctl_make_virtual_master(name, tlv);
      if (!kctl)
            return -ENOMEM;
      err = snd_hda_ctl_add(codec, kctl);
      if (err < 0)
            return err;
      
      for (s = slaves; *s; s++) {
            struct snd_kcontrol *sctl;
            int i = 0;
            for (;;) {
                  sctl = _snd_hda_find_mixer_ctl(codec, *s, i);
                  if (!sctl) {
                        if (!i)
                              snd_printdd("Cannot find slave %s, "
                                        "skipped\n", *s);
                        break;
                  }
                  err = snd_ctl_add_slave(kctl, sctl);
                  if (err < 0)
                        return err;
                  i++;
            }
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_add_vmaster);

/* switch */
int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
                          struct snd_ctl_elem_info *uinfo)
{
      int chs = get_amp_channels(kcontrol);

      uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
      uinfo->count = chs == 3 ? 2 : 1;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = 1;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_info);

int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = get_amp_nid(kcontrol);
      int chs = get_amp_channels(kcontrol);
      int dir = get_amp_direction(kcontrol);
      int idx = get_amp_index(kcontrol);
      long *valp = ucontrol->value.integer.value;

      if (chs & 1)
            *valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) &
                     HDA_AMP_MUTE) ? 0 : 1;
      if (chs & 2)
            *valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) &
                   HDA_AMP_MUTE) ? 0 : 1;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_get);

int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = get_amp_nid(kcontrol);
      int chs = get_amp_channels(kcontrol);
      int dir = get_amp_direction(kcontrol);
      int idx = get_amp_index(kcontrol);
      long *valp = ucontrol->value.integer.value;
      int change = 0;

      snd_hda_power_up(codec);
      if (chs & 1) {
            change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
                                      HDA_AMP_MUTE,
                                      *valp ? 0 : HDA_AMP_MUTE);
            valp++;
      }
      if (chs & 2)
            change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
                                       HDA_AMP_MUTE,
                                       *valp ? 0 : HDA_AMP_MUTE);
#ifdef CONFIG_SND_HDA_POWER_SAVE
      if (codec->patch_ops.check_power_status)
            codec->patch_ops.check_power_status(codec, nid);
#endif
      snd_hda_power_down(codec);
      return change;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_put);

/*
 * bound volume controls
 *
 * bind multiple volumes (# indices, from 0)
 */

#define AMP_VAL_IDX_SHIFT     19
#define AMP_VAL_IDX_MASK      (0x0f<<19)

int snd_hda_mixer_bind_switch_get(struct snd_kcontrol *kcontrol,
                          struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      unsigned long pval;
      int err;

      mutex_lock(&codec->control_mutex);
      pval = kcontrol->private_value;
      kcontrol->private_value = pval & ~AMP_VAL_IDX_MASK; /* index 0 */
      err = snd_hda_mixer_amp_switch_get(kcontrol, ucontrol);
      kcontrol->private_value = pval;
      mutex_unlock(&codec->control_mutex);
      return err;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_switch_get);

int snd_hda_mixer_bind_switch_put(struct snd_kcontrol *kcontrol,
                          struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      unsigned long pval;
      int i, indices, err = 0, change = 0;

      mutex_lock(&codec->control_mutex);
      pval = kcontrol->private_value;
      indices = (pval & AMP_VAL_IDX_MASK) >> AMP_VAL_IDX_SHIFT;
      for (i = 0; i < indices; i++) {
            kcontrol->private_value = (pval & ~AMP_VAL_IDX_MASK) |
                  (i << AMP_VAL_IDX_SHIFT);
            err = snd_hda_mixer_amp_switch_put(kcontrol, ucontrol);
            if (err < 0)
                  break;
            change |= err;
      }
      kcontrol->private_value = pval;
      mutex_unlock(&codec->control_mutex);
      return err < 0 ? err : change;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_switch_put);

/*
 * generic bound volume/swtich controls
 */
int snd_hda_mixer_bind_ctls_info(struct snd_kcontrol *kcontrol,
                         struct snd_ctl_elem_info *uinfo)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      struct hda_bind_ctls *c;
      int err;

      mutex_lock(&codec->control_mutex);
      c = (struct hda_bind_ctls *)kcontrol->private_value;
      kcontrol->private_value = *c->values;
      err = c->ops->info(kcontrol, uinfo);
      kcontrol->private_value = (long)c;
      mutex_unlock(&codec->control_mutex);
      return err;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_ctls_info);

int snd_hda_mixer_bind_ctls_get(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      struct hda_bind_ctls *c;
      int err;

      mutex_lock(&codec->control_mutex);
      c = (struct hda_bind_ctls *)kcontrol->private_value;
      kcontrol->private_value = *c->values;
      err = c->ops->get(kcontrol, ucontrol);
      kcontrol->private_value = (long)c;
      mutex_unlock(&codec->control_mutex);
      return err;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_ctls_get);

int snd_hda_mixer_bind_ctls_put(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      struct hda_bind_ctls *c;
      unsigned long *vals;
      int err = 0, change = 0;

      mutex_lock(&codec->control_mutex);
      c = (struct hda_bind_ctls *)kcontrol->private_value;
      for (vals = c->values; *vals; vals++) {
            kcontrol->private_value = *vals;
            err = c->ops->put(kcontrol, ucontrol);
            if (err < 0)
                  break;
            change |= err;
      }
      kcontrol->private_value = (long)c;
      mutex_unlock(&codec->control_mutex);
      return err < 0 ? err : change;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_ctls_put);

int snd_hda_mixer_bind_tlv(struct snd_kcontrol *kcontrol, int op_flag,
                     unsigned int size, unsigned int __user *tlv)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      struct hda_bind_ctls *c;
      int err;

      mutex_lock(&codec->control_mutex);
      c = (struct hda_bind_ctls *)kcontrol->private_value;
      kcontrol->private_value = *c->values;
      err = c->ops->tlv(kcontrol, op_flag, size, tlv);
      kcontrol->private_value = (long)c;
      mutex_unlock(&codec->control_mutex);
      return err;
}
EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_tlv);

struct hda_ctl_ops snd_hda_bind_vol = {
      .info = snd_hda_mixer_amp_volume_info,
      .get = snd_hda_mixer_amp_volume_get,
      .put = snd_hda_mixer_amp_volume_put,
      .tlv = snd_hda_mixer_amp_tlv
};
EXPORT_SYMBOL_HDA(snd_hda_bind_vol);

struct hda_ctl_ops snd_hda_bind_sw = {
      .info = snd_hda_mixer_amp_switch_info,
      .get = snd_hda_mixer_amp_switch_get,
      .put = snd_hda_mixer_amp_switch_put,
      .tlv = snd_hda_mixer_amp_tlv
};
EXPORT_SYMBOL_HDA(snd_hda_bind_sw);

/*
 * SPDIF out controls
 */

static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol,
                           struct snd_ctl_elem_info *uinfo)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
      uinfo->count = 1;
      return 0;
}

static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol,
                           struct snd_ctl_elem_value *ucontrol)
{
      ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
                                 IEC958_AES0_NONAUDIO |
                                 IEC958_AES0_CON_EMPHASIS_5015 |
                                 IEC958_AES0_CON_NOT_COPYRIGHT;
      ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
                                 IEC958_AES1_CON_ORIGINAL;
      return 0;
}

static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol,
                           struct snd_ctl_elem_value *ucontrol)
{
      ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
                                 IEC958_AES0_NONAUDIO |
                                 IEC958_AES0_PRO_EMPHASIS_5015;
      return 0;
}

static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol,
                             struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

      ucontrol->value.iec958.status[0] = codec->spdif_status & 0xff;
      ucontrol->value.iec958.status[1] = (codec->spdif_status >> 8) & 0xff;
      ucontrol->value.iec958.status[2] = (codec->spdif_status >> 16) & 0xff;
      ucontrol->value.iec958.status[3] = (codec->spdif_status >> 24) & 0xff;

      return 0;
}

/* convert from SPDIF status bits to HDA SPDIF bits
 * bit 0 (DigEn) is always set zero (to be filled later)
 */
static unsigned short convert_from_spdif_status(unsigned int sbits)
{
      unsigned short val = 0;

      if (sbits & IEC958_AES0_PROFESSIONAL)
            val |= AC_DIG1_PROFESSIONAL;
      if (sbits & IEC958_AES0_NONAUDIO)
            val |= AC_DIG1_NONAUDIO;
      if (sbits & IEC958_AES0_PROFESSIONAL) {
            if ((sbits & IEC958_AES0_PRO_EMPHASIS) ==
                IEC958_AES0_PRO_EMPHASIS_5015)
                  val |= AC_DIG1_EMPHASIS;
      } else {
            if ((sbits & IEC958_AES0_CON_EMPHASIS) ==
                IEC958_AES0_CON_EMPHASIS_5015)
                  val |= AC_DIG1_EMPHASIS;
            if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
                  val |= AC_DIG1_COPYRIGHT;
            if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
                  val |= AC_DIG1_LEVEL;
            val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
      }
      return val;
}

/* convert to SPDIF status bits from HDA SPDIF bits
 */
static unsigned int convert_to_spdif_status(unsigned short val)
{
      unsigned int sbits = 0;

      if (val & AC_DIG1_NONAUDIO)
            sbits |= IEC958_AES0_NONAUDIO;
      if (val & AC_DIG1_PROFESSIONAL)
            sbits |= IEC958_AES0_PROFESSIONAL;
      if (sbits & IEC958_AES0_PROFESSIONAL) {
            if (sbits & AC_DIG1_EMPHASIS)
                  sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
      } else {
            if (val & AC_DIG1_EMPHASIS)
                  sbits |= IEC958_AES0_CON_EMPHASIS_5015;
            if (!(val & AC_DIG1_COPYRIGHT))
                  sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
            if (val & AC_DIG1_LEVEL)
                  sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
            sbits |= val & (0x7f << 8);
      }
      return sbits;
}

/* set digital convert verbs both for the given NID and its slaves */
static void set_dig_out(struct hda_codec *codec, hda_nid_t nid,
                  int verb, int val)
{
      hda_nid_t *d;

      snd_hda_codec_write_cache(codec, nid, 0, verb, val);
      d = codec->slave_dig_outs;
      if (!d)
            return;
      for (; *d; d++)
            snd_hda_codec_write_cache(codec, *d, 0, verb, val);
}

static inline void set_dig_out_convert(struct hda_codec *codec, hda_nid_t nid,
                               int dig1, int dig2)
{
      if (dig1 != -1)
            set_dig_out(codec, nid, AC_VERB_SET_DIGI_CONVERT_1, dig1);
      if (dig2 != -1)
            set_dig_out(codec, nid, AC_VERB_SET_DIGI_CONVERT_2, dig2);
}

static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol,
                             struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = kcontrol->private_value;
      unsigned short val;
      int change;

      mutex_lock(&codec->spdif_mutex);
      codec->spdif_status = ucontrol->value.iec958.status[0] |
            ((unsigned int)ucontrol->value.iec958.status[1] << 8) |
            ((unsigned int)ucontrol->value.iec958.status[2] << 16) |
            ((unsigned int)ucontrol->value.iec958.status[3] << 24);
      val = convert_from_spdif_status(codec->spdif_status);
      val |= codec->spdif_ctls & 1;
      change = codec->spdif_ctls != val;
      codec->spdif_ctls = val;

      if (change)
            set_dig_out_convert(codec, nid, val & 0xff, (val >> 8) & 0xff);

      mutex_unlock(&codec->spdif_mutex);
      return change;
}

#define snd_hda_spdif_out_switch_info     snd_ctl_boolean_mono_info

static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

      ucontrol->value.integer.value[0] = codec->spdif_ctls & AC_DIG1_ENABLE;
      return 0;
}

static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = kcontrol->private_value;
      unsigned short val;
      int change;

      mutex_lock(&codec->spdif_mutex);
      val = codec->spdif_ctls & ~AC_DIG1_ENABLE;
      if (ucontrol->value.integer.value[0])
            val |= AC_DIG1_ENABLE;
      change = codec->spdif_ctls != val;
      if (change) {
            codec->spdif_ctls = val;
            set_dig_out_convert(codec, nid, val & 0xff, -1);
            /* unmute amp switch (if any) */
            if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
                (val & AC_DIG1_ENABLE))
                  snd_hda_codec_amp_stereo(codec, nid, HDA_OUTPUT, 0,
                                     HDA_AMP_MUTE, 0);
      }
      mutex_unlock(&codec->spdif_mutex);
      return change;
}

static struct snd_kcontrol_new dig_mixes[] = {
      {
            .access = SNDRV_CTL_ELEM_ACCESS_READ,
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
            .info = snd_hda_spdif_mask_info,
            .get = snd_hda_spdif_cmask_get,
      },
      {
            .access = SNDRV_CTL_ELEM_ACCESS_READ,
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
            .info = snd_hda_spdif_mask_info,
            .get = snd_hda_spdif_pmask_get,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
            .info = snd_hda_spdif_mask_info,
            .get = snd_hda_spdif_default_get,
            .put = snd_hda_spdif_default_put,
      },
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
            .info = snd_hda_spdif_out_switch_info,
            .get = snd_hda_spdif_out_switch_get,
            .put = snd_hda_spdif_out_switch_put,
      },
      { } /* end */
};

#define SPDIF_MAX_IDX   4     /* 4 instances should be enough to probe */

/**
 * snd_hda_create_spdif_out_ctls - create Output SPDIF-related controls
 * @codec: the HDA codec
 * @nid: audio out widget NID
 *
 * Creates controls related with the SPDIF output.
 * Called from each patch supporting the SPDIF out.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, hda_nid_t nid)
{
      int err;
      struct snd_kcontrol *kctl;
      struct snd_kcontrol_new *dig_mix;
      int idx;

      for (idx = 0; idx < SPDIF_MAX_IDX; idx++) {
            if (!_snd_hda_find_mixer_ctl(codec, "IEC958 Playback Switch",
                                   idx))
                  break;
      }
      if (idx >= SPDIF_MAX_IDX) {
            printk(KERN_ERR "hda_codec: too many IEC958 outputs\n");
            return -EBUSY;
      }
      for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
            kctl = snd_ctl_new1(dig_mix, codec);
            if (!kctl)
                  return -ENOMEM;
            kctl->id.index = idx;
            kctl->private_value = nid;
            err = snd_hda_ctl_add(codec, kctl);
            if (err < 0)
                  return err;
      }
      codec->spdif_ctls =
            snd_hda_codec_read(codec, nid, 0,
                           AC_VERB_GET_DIGI_CONVERT_1, 0);
      codec->spdif_status = convert_to_spdif_status(codec->spdif_ctls);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_create_spdif_out_ctls);

/*
 * SPDIF sharing with analog output
 */
static int spdif_share_sw_get(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
      ucontrol->value.integer.value[0] = mout->share_spdif;
      return 0;
}

static int spdif_share_sw_put(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
      struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol);
      mout->share_spdif = !!ucontrol->value.integer.value[0];
      return 0;
}

static struct snd_kcontrol_new spdif_share_sw = {
      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
      .name = "IEC958 Default PCM Playback Switch",
      .info = snd_ctl_boolean_mono_info,
      .get = spdif_share_sw_get,
      .put = spdif_share_sw_put,
};

int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
                          struct hda_multi_out *mout)
{
      if (!mout->dig_out_nid)
            return 0;
      /* ATTENTION: here mout is passed as private_data, instead of codec */
      return snd_hda_ctl_add(codec,
                     snd_ctl_new1(&spdif_share_sw, mout));
}
EXPORT_SYMBOL_HDA(snd_hda_create_spdif_share_sw);

/*
 * SPDIF input
 */

#define snd_hda_spdif_in_switch_info      snd_hda_spdif_out_switch_info

static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);

      ucontrol->value.integer.value[0] = codec->spdif_in_enable;
      return 0;
}

static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = kcontrol->private_value;
      unsigned int val = !!ucontrol->value.integer.value[0];
      int change;

      mutex_lock(&codec->spdif_mutex);
      change = codec->spdif_in_enable != val;
      if (change) {
            codec->spdif_in_enable = val;
            snd_hda_codec_write_cache(codec, nid, 0,
                                AC_VERB_SET_DIGI_CONVERT_1, val);
      }
      mutex_unlock(&codec->spdif_mutex);
      return change;
}

static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
      struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
      hda_nid_t nid = kcontrol->private_value;
      unsigned short val;
      unsigned int sbits;

      val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT_1, 0);
      sbits = convert_to_spdif_status(val);
      ucontrol->value.iec958.status[0] = sbits;
      ucontrol->value.iec958.status[1] = sbits >> 8;
      ucontrol->value.iec958.status[2] = sbits >> 16;
      ucontrol->value.iec958.status[3] = sbits >> 24;
      return 0;
}

static struct snd_kcontrol_new dig_in_ctls[] = {
      {
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH),
            .info = snd_hda_spdif_in_switch_info,
            .get = snd_hda_spdif_in_switch_get,
            .put = snd_hda_spdif_in_switch_put,
      },
      {
            .access = SNDRV_CTL_ELEM_ACCESS_READ,
            .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
            .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
            .info = snd_hda_spdif_mask_info,
            .get = snd_hda_spdif_in_status_get,
      },
      { } /* end */
};

/**
 * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
 * @codec: the HDA codec
 * @nid: audio in widget NID
 *
 * Creates controls related with the SPDIF input.
 * Called from each patch supporting the SPDIF in.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
{
      int err;
      struct snd_kcontrol *kctl;
      struct snd_kcontrol_new *dig_mix;
      int idx;

      for (idx = 0; idx < SPDIF_MAX_IDX; idx++) {
            if (!_snd_hda_find_mixer_ctl(codec, "IEC958 Capture Switch",
                                   idx))
                  break;
      }
      if (idx >= SPDIF_MAX_IDX) {
            printk(KERN_ERR "hda_codec: too many IEC958 inputs\n");
            return -EBUSY;
      }
      for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
            kctl = snd_ctl_new1(dig_mix, codec);
            if (!kctl)
                  return -ENOMEM;
            kctl->private_value = nid;
            err = snd_hda_ctl_add(codec, kctl);
            if (err < 0)
                  return err;
      }
      codec->spdif_in_enable =
            snd_hda_codec_read(codec, nid, 0,
                           AC_VERB_GET_DIGI_CONVERT_1, 0) &
            AC_DIG1_ENABLE;
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_create_spdif_in_ctls);

#ifdef SND_HDA_NEEDS_RESUME
/*
 * command cache
 */

/* build a 32bit cache key with the widget id and the command parameter */
#define build_cmd_cache_key(nid, verb)    ((verb << 8) | nid)
#define get_cmd_cache_nid(key)            ((key) & 0xff)
#define get_cmd_cache_cmd(key)            (((key) >> 8) & 0xffff)

/**
 * snd_hda_codec_write_cache - send a single command with caching
 * @codec: the HDA codec
 * @nid: NID to send the command
 * @direct: direct flag
 * @verb: the verb to send
 * @parm: the parameter for the verb
 *
 * Send a single command without waiting for response.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
                        int direct, unsigned int verb, unsigned int parm)
{
      struct hda_bus *bus = codec->bus;
      unsigned int res;
      int err;

      res = make_codec_cmd(codec, nid, direct, verb, parm);
      snd_hda_power_up(codec);
      mutex_lock(&bus->cmd_mutex);
      err = bus->ops.command(bus, res);
      if (!err) {
            struct hda_cache_head *c;
            u32 key;
            /* parm may contain the verb stuff for get/set amp */
            verb = verb | (parm >> 8);
            parm &= 0xff;
            key = build_cmd_cache_key(nid, verb);
            c = get_alloc_hash(&codec->cmd_cache, key);
            if (c)
                  c->val = parm;
      }
      mutex_unlock(&bus->cmd_mutex);
      snd_hda_power_down(codec);
      return err;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_write_cache);

/* resume the all commands from the cache */
void snd_hda_codec_resume_cache(struct hda_codec *codec)
{
      struct hda_cache_head *buffer = codec->cmd_cache.buf.list;
      int i;

      for (i = 0; i < codec->cmd_cache.buf.used; i++, buffer++) {
            u32 key = buffer->key;
            if (!key)
                  continue;
            snd_hda_codec_write(codec, get_cmd_cache_nid(key), 0,
                            get_cmd_cache_cmd(key), buffer->val);
      }
}
EXPORT_SYMBOL_HDA(snd_hda_codec_resume_cache);

/**
 * snd_hda_sequence_write_cache - sequence writes with caching
 * @codec: the HDA codec
 * @seq: VERB array to send
 *
 * Send the commands sequentially from the given array.
 * Thte commands are recorded on cache for power-save and resume.
 * The array must be terminated with NID=0.
 */
void snd_hda_sequence_write_cache(struct hda_codec *codec,
                          const struct hda_verb *seq)
{
      for (; seq->nid; seq++)
            snd_hda_codec_write_cache(codec, seq->nid, 0, seq->verb,
                                seq->param);
}
EXPORT_SYMBOL_HDA(snd_hda_sequence_write_cache);
#endif /* SND_HDA_NEEDS_RESUME */

/*
 * set power state of the codec
 */
static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
                        unsigned int power_state)
{
      hda_nid_t nid;
      int i;

      snd_hda_codec_write(codec, fg, 0, AC_VERB_SET_POWER_STATE,
                      power_state);
      msleep(10); /* partial workaround for "azx_get_response timeout" */

      nid = codec->start_nid;
      for (i = 0; i < codec->num_nodes; i++, nid++) {
            unsigned int wcaps = get_wcaps(codec, nid);
            if (wcaps & AC_WCAP_POWER) {
                  unsigned int wid_type = (wcaps & AC_WCAP_TYPE) >>
                        AC_WCAP_TYPE_SHIFT;
                  if (wid_type == AC_WID_PIN) {
                        unsigned int pincap;
                        /*
                         * don't power down the widget if it controls
                         * eapd and EAPD_BTLENABLE is set.
                         */
                        pincap = snd_hda_query_pin_caps(codec, nid);
                        if (pincap & AC_PINCAP_EAPD) {
                              int eapd = snd_hda_codec_read(codec,
                                    nid, 0,
                                    AC_VERB_GET_EAPD_BTLENABLE, 0);
                              eapd &= 0x02;
                              if (power_state == AC_PWRST_D3 && eapd)
                                    continue;
                        }
                  }
                  snd_hda_codec_write(codec, nid, 0,
                                  AC_VERB_SET_POWER_STATE,
                                  power_state);
            }
      }

      if (power_state == AC_PWRST_D0) {
            unsigned long end_time;
            int state;
            msleep(10);
            /* wait until the codec reachs to D0 */
            end_time = jiffies + msecs_to_jiffies(500);
            do {
                  state = snd_hda_codec_read(codec, fg, 0,
                                       AC_VERB_GET_POWER_STATE, 0);
                  if (state == power_state)
                        break;
                  msleep(1);
            } while (time_after_eq(end_time, jiffies));
      }
}

#ifdef CONFIG_SND_HDA_HWDEP
/* execute additional init verbs */
static void hda_exec_init_verbs(struct hda_codec *codec)
{
      if (codec->init_verbs.list)
            snd_hda_sequence_write(codec, codec->init_verbs.list);
}
#else
static inline void hda_exec_init_verbs(struct hda_codec *codec) {}
#endif

#ifdef SND_HDA_NEEDS_RESUME
/*
 * call suspend and power-down; used both from PM and power-save
 */
static void hda_call_codec_suspend(struct hda_codec *codec)
{
      if (codec->patch_ops.suspend)
            codec->patch_ops.suspend(codec, PMSG_SUSPEND);
      hda_set_power_state(codec,
                      codec->afg ? codec->afg : codec->mfg,
                      AC_PWRST_D3);
#ifdef CONFIG_SND_HDA_POWER_SAVE
      cancel_delayed_work(&codec->power_work);
      codec->power_on = 0;
      codec->power_transition = 0;
#endif
}

/*
 * kick up codec; used both from PM and power-save
 */
static void hda_call_codec_resume(struct hda_codec *codec)
{
      hda_set_power_state(codec,
                      codec->afg ? codec->afg : codec->mfg,
                      AC_PWRST_D0);
      restore_pincfgs(codec); /* restore all current pin configs */
      hda_exec_init_verbs(codec);
      if (codec->patch_ops.resume)
            codec->patch_ops.resume(codec);
      else {
            if (codec->patch_ops.init)
                  codec->patch_ops.init(codec);
            snd_hda_codec_resume_amp(codec);
            snd_hda_codec_resume_cache(codec);
      }
}
#endif /* SND_HDA_NEEDS_RESUME */


/**
 * snd_hda_build_controls - build mixer controls
 * @bus: the BUS
 *
 * Creates mixer controls for each codec included in the bus.
 *
 * Returns 0 if successful, otherwise a negative error code.
 */
int /*__devinit*/ snd_hda_build_controls(struct hda_bus *bus)
{
      struct hda_codec *codec;

      list_for_each_entry(codec, &bus->codec_list, list) {
            int err = snd_hda_codec_build_controls(codec);
            if (err < 0) {
                  printk(KERN_ERR "hda_codec: cannot build controls"
                         "for #%d (error %d)\n", codec->addr, err); 
                  err = snd_hda_codec_reset(codec);
                  if (err < 0) {
                        printk(KERN_ERR
                               "hda_codec: cannot revert codec\n");
                        return err;
                  }
            }
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_build_controls);

int snd_hda_codec_build_controls(struct hda_codec *codec)
{
      int err = 0;
      hda_exec_init_verbs(codec);
      /* continue to initialize... */
      if (codec->patch_ops.init)
            err = codec->patch_ops.init(codec);
      if (!err && codec->patch_ops.build_controls)
            err = codec->patch_ops.build_controls(codec);
      if (err < 0)
            return err;
      return 0;
}

/*
 * stream formats
 */
struct hda_rate_tbl {
      unsigned int hz;
      unsigned int alsa_bits;
      unsigned int hda_fmt;
};

static struct hda_rate_tbl rate_bits[] = {
      /* rate in Hz, ALSA rate bitmask, HDA format value */

      /* autodetected value used in snd_hda_query_supported_pcm */
      { 8000, SNDRV_PCM_RATE_8000, 0x0500 }, /* 1/6 x 48 */
      { 11025, SNDRV_PCM_RATE_11025, 0x4300 }, /* 1/4 x 44 */
      { 16000, SNDRV_PCM_RATE_16000, 0x0200 }, /* 1/3 x 48 */
      { 22050, SNDRV_PCM_RATE_22050, 0x4100 }, /* 1/2 x 44 */
      { 32000, SNDRV_PCM_RATE_32000, 0x0a00 }, /* 2/3 x 48 */
      { 44100, SNDRV_PCM_RATE_44100, 0x4000 }, /* 44 */
      { 48000, SNDRV_PCM_RATE_48000, 0x0000 }, /* 48 */
      { 88200, SNDRV_PCM_RATE_88200, 0x4800 }, /* 2 x 44 */
      { 96000, SNDRV_PCM_RATE_96000, 0x0800 }, /* 2 x 48 */
      { 176400, SNDRV_PCM_RATE_176400, 0x5800 },/* 4 x 44 */
      { 192000, SNDRV_PCM_RATE_192000, 0x1800 }, /* 4 x 48 */
#define AC_PAR_PCM_RATE_BITS  11
      /* up to bits 10, 384kHZ isn't supported properly */

      /* not autodetected value */
      { 9600, SNDRV_PCM_RATE_KNOT, 0x0400 }, /* 1/5 x 48 */

      { 0 } /* terminator */
};

/**
 * snd_hda_calc_stream_format - calculate format bitset
 * @rate: the sample rate
 * @channels: the number of channels
 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
 * @maxbps: the max. bps
 *
 * Calculate the format bitset from the given rate, channels and th PCM format.
 *
 * Return zero if invalid.
 */
unsigned int snd_hda_calc_stream_format(unsigned int rate,
                              unsigned int channels,
                              unsigned int format,
                              unsigned int maxbps)
{
      int i;
      unsigned int val = 0;

      for (i = 0; rate_bits[i].hz; i++)
            if (rate_bits[i].hz == rate) {
                  val = rate_bits[i].hda_fmt;
                  break;
            }
      if (!rate_bits[i].hz) {
            snd_printdd("invalid rate %d\n", rate);
            return 0;
      }

      if (channels == 0 || channels > 8) {
            snd_printdd("invalid channels %d\n", channels);
            return 0;
      }
      val |= channels - 1;

      switch (snd_pcm_format_width(format)) {
      case 8:  val |= 0x00; break;
      case 16: val |= 0x10; break;
      case 20:
      case 24:
      case 32:
            if (maxbps >= 32)
                  val |= 0x40;
            else if (maxbps >= 24)
                  val |= 0x30;
            else
                  val |= 0x20;
            break;
      default:
            snd_printdd("invalid format width %d\n",
                      snd_pcm_format_width(format));
            return 0;
      }

      return val;
}
EXPORT_SYMBOL_HDA(snd_hda_calc_stream_format);

/**
 * snd_hda_query_supported_pcm - query the supported PCM rates and formats
 * @codec: the HDA codec
 * @nid: NID to query
 * @ratesp: the pointer to store the detected rate bitflags
 * @formatsp: the pointer to store the detected formats
 * @bpsp: the pointer to store the detected format widths
 *
 * Queries the supported PCM rates and formats.  The NULL @ratesp, @formatsp
 * or @bsps argument is ignored.
 *
 * Returns 0 if successful, otherwise a negative error code.
 */
static int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
                        u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
{
      unsigned int i, val, wcaps;

      val = 0;
      wcaps = get_wcaps(codec, nid);
      if (nid != codec->afg && (wcaps & AC_WCAP_FORMAT_OVRD)) {
            val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
            if (val == -1)
                  return -EIO;
      }
      if (!val)
            val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);

      if (ratesp) {
            u32 rates = 0;
            for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
                  if (val & (1 << i))
                        rates |= rate_bits[i].alsa_bits;
            }
            if (rates == 0) {
                  snd_printk(KERN_ERR "hda_codec: rates == 0 "
                           "(nid=0x%x, val=0x%x, ovrd=%i)\n",
                              nid, val,
                              (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
                  return -EIO;
            }
            *ratesp = rates;
      }

      if (formatsp || bpsp) {
            u64 formats = 0;
            unsigned int streams, bps;

            streams = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
            if (streams == -1)
                  return -EIO;
            if (!streams) {
                  streams = snd_hda_param_read(codec, codec->afg,
                                         AC_PAR_STREAM);
                  if (streams == -1)
                        return -EIO;
            }

            bps = 0;
            if (streams & AC_SUPFMT_PCM) {
                  if (val & AC_SUPPCM_BITS_8) {
                        formats |= SNDRV_PCM_FMTBIT_U8;
                        bps = 8;
                  }
                  if (val & AC_SUPPCM_BITS_16) {
                        formats |= SNDRV_PCM_FMTBIT_S16_LE;
                        bps = 16;
                  }
                  if (wcaps & AC_WCAP_DIGITAL) {
                        if (val & AC_SUPPCM_BITS_32)
                              formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
                        if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
                              formats |= SNDRV_PCM_FMTBIT_S32_LE;
                        if (val & AC_SUPPCM_BITS_24)
                              bps = 24;
                        else if (val & AC_SUPPCM_BITS_20)
                              bps = 20;
                  } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
                                AC_SUPPCM_BITS_32)) {
                        formats |= SNDRV_PCM_FMTBIT_S32_LE;
                        if (val & AC_SUPPCM_BITS_32)
                              bps = 32;
                        else if (val & AC_SUPPCM_BITS_24)
                              bps = 24;
                        else if (val & AC_SUPPCM_BITS_20)
                              bps = 20;
                  }
            }
            else if (streams == AC_SUPFMT_FLOAT32) {
                  /* should be exclusive */
                  formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
                  bps = 32;
            } else if (streams == AC_SUPFMT_AC3) {
                  /* should be exclusive */
                  /* temporary hack: we have still no proper support
                   * for the direct AC3 stream...
                   */
                  formats |= SNDRV_PCM_FMTBIT_U8;
                  bps = 8;
            }
            if (formats == 0) {
                  snd_printk(KERN_ERR "hda_codec: formats == 0 "
                           "(nid=0x%x, val=0x%x, ovrd=%i, "
                           "streams=0x%x)\n",
                              nid, val,
                              (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
                              streams);
                  return -EIO;
            }
            if (formatsp)
                  *formatsp = formats;
            if (bpsp)
                  *bpsp = bps;
      }

      return 0;
}

/**
 * snd_hda_is_supported_format - check whether the given node supports
 * the format val
 *
 * Returns 1 if supported, 0 if not.
 */
int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid,
                        unsigned int format)
{
      int i;
      unsigned int val = 0, rate, stream;

      if (nid != codec->afg &&
          (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) {
            val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
            if (val == -1)
                  return 0;
      }
      if (!val) {
            val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);
            if (val == -1)
                  return 0;
      }

      rate = format & 0xff00;
      for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
            if (rate_bits[i].hda_fmt == rate) {
                  if (val & (1 << i))
                        break;
                  return 0;
            }
      if (i >= AC_PAR_PCM_RATE_BITS)
            return 0;

      stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
      if (stream == -1)
            return 0;
      if (!stream && nid != codec->afg)
            stream = snd_hda_param_read(codec, codec->afg, AC_PAR_STREAM);
      if (!stream || stream == -1)
            return 0;

      if (stream & AC_SUPFMT_PCM) {
            switch (format & 0xf0) {
            case 0x00:
                  if (!(val & AC_SUPPCM_BITS_8))
                        return 0;
                  break;
            case 0x10:
                  if (!(val & AC_SUPPCM_BITS_16))
                        return 0;
                  break;
            case 0x20:
                  if (!(val & AC_SUPPCM_BITS_20))
                        return 0;
                  break;
            case 0x30:
                  if (!(val & AC_SUPPCM_BITS_24))
                        return 0;
                  break;
            case 0x40:
                  if (!(val & AC_SUPPCM_BITS_32))
                        return 0;
                  break;
            default:
                  return 0;
            }
      } else {
            /* FIXME: check for float32 and AC3? */
      }

      return 1;
}
EXPORT_SYMBOL_HDA(snd_hda_is_supported_format);

/*
 * PCM stuff
 */
static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
                              struct hda_codec *codec,
                              struct snd_pcm_substream *substream)
{
      return 0;
}

static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo,
                           struct hda_codec *codec,
                           unsigned int stream_tag,
                           unsigned int format,
                           struct snd_pcm_substream *substream)
{
      snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
      return 0;
}

static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo,
                           struct hda_codec *codec,
                           struct snd_pcm_substream *substream)
{
      snd_hda_codec_cleanup_stream(codec, hinfo->nid);
      return 0;
}

static int set_pcm_default_values(struct hda_codec *codec,
                          struct hda_pcm_stream *info)
{
      int err;

      /* query support PCM information from the given NID */
      if (info->nid && (!info->rates || !info->formats)) {
            err = snd_hda_query_supported_pcm(codec, info->nid,
                        info->rates ? NULL : &info->rates,
                        info->formats ? NULL : &info->formats,
                        info->maxbps ? NULL : &info->maxbps);
            if (err < 0)
                  return err;
      }
      if (info->ops.open == NULL)
            info->ops.open = hda_pcm_default_open_close;
      if (info->ops.close == NULL)
            info->ops.close = hda_pcm_default_open_close;
      if (info->ops.prepare == NULL) {
            if (snd_BUG_ON(!info->nid))
                  return -EINVAL;
            info->ops.prepare = hda_pcm_default_prepare;
      }
      if (info->ops.cleanup == NULL) {
            if (snd_BUG_ON(!info->nid))
                  return -EINVAL;
            info->ops.cleanup = hda_pcm_default_cleanup;
      }
      return 0;
}

/*
 * get the empty PCM device number to assign
 */
static int get_empty_pcm_device(struct hda_bus *bus, int type)
{
      static const char *dev_name[HDA_PCM_NTYPES] = {
            "Audio", "SPDIF", "HDMI", "Modem"
      };
      /* starting device index for each PCM type */
      static int dev_idx[HDA_PCM_NTYPES] = {
            [HDA_PCM_TYPE_AUDIO] = 0,
            [HDA_PCM_TYPE_SPDIF] = 1,
            [HDA_PCM_TYPE_HDMI] = 3,
            [HDA_PCM_TYPE_MODEM] = 6
      };
      /* normal audio device indices; not linear to keep compatibility */
      static int audio_idx[4] = { 0, 2, 4, 5 };
      int i, dev;

      switch (type) {
      case HDA_PCM_TYPE_AUDIO:
            for (i = 0; i < ARRAY_SIZE(audio_idx); i++) {
                  dev = audio_idx[i];
                  if (!test_bit(dev, bus->pcm_dev_bits))
                        goto ok;
            }
            snd_printk(KERN_WARNING "Too many audio devices\n");
            return -EAGAIN;
      case HDA_PCM_TYPE_SPDIF:
      case HDA_PCM_TYPE_HDMI:
      case HDA_PCM_TYPE_MODEM:
            dev = dev_idx[type];
            if (test_bit(dev, bus->pcm_dev_bits)) {
                  snd_printk(KERN_WARNING "%s already defined\n",
                           dev_name[type]);
                  return -EAGAIN;
            }
            break;
      default:
            snd_printk(KERN_WARNING "Invalid PCM type %d\n", type);
            return -EINVAL;
      }
 ok:
      set_bit(dev, bus->pcm_dev_bits);
      return dev;
}

/*
 * attach a new PCM stream
 */
static int snd_hda_attach_pcm(struct hda_codec *codec, struct hda_pcm *pcm)
{
      struct hda_bus *bus = codec->bus;
      struct hda_pcm_stream *info;
      int stream, err;

      if (snd_BUG_ON(!pcm->name))
            return -EINVAL;
      for (stream = 0; stream < 2; stream++) {
            info = &pcm->stream[stream];
            if (info->substreams) {
                  err = set_pcm_default_values(codec, info);
                  if (err < 0)
                        return err;
            }
      }
      return bus->ops.attach_pcm(bus, codec, pcm);
}

/* assign all PCMs of the given codec */
int snd_hda_codec_build_pcms(struct hda_codec *codec)
{
      unsigned int pcm;
      int err;

      if (!codec->num_pcms) {
            if (!codec->patch_ops.build_pcms)
                  return 0;
            err = codec->patch_ops.build_pcms(codec);
            if (err < 0) {
                  printk(KERN_ERR "hda_codec: cannot build PCMs"
                         "for #%d (error %d)\n", codec->addr, err); 
                  err = snd_hda_codec_reset(codec);
                  if (err < 0) {
                        printk(KERN_ERR
                               "hda_codec: cannot revert codec\n");
                        return err;
                  }
            }
      }
      for (pcm = 0; pcm < codec->num_pcms; pcm++) {
            struct hda_pcm *cpcm = &codec->pcm_info[pcm];
            int dev;

            if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams)
                  continue; /* no substreams assigned */

            if (!cpcm->pcm) {
                  dev = get_empty_pcm_device(codec->bus, cpcm->pcm_type);
                  if (dev < 0)
                        continue; /* no fatal error */
                  cpcm->device = dev;
                  err = snd_hda_attach_pcm(codec, cpcm);
                  if (err < 0) {
                        printk(KERN_ERR "hda_codec: cannot attach "
                               "PCM stream %d for codec #%d\n",
                               dev, codec->addr);
                        continue; /* no fatal error */
                  }
            }
      }
      return 0;
}

/**
 * snd_hda_build_pcms - build PCM information
 * @bus: the BUS
 *
 * Create PCM information for each codec included in the bus.
 *
 * The build_pcms codec patch is requested to set up codec->num_pcms and
 * codec->pcm_info properly.  The array is referred by the top-level driver
 * to create its PCM instances.
 * The allocated codec->pcm_info should be released in codec->patch_ops.free
 * callback.
 *
 * At least, substreams, channels_min and channels_max must be filled for
 * each stream.  substreams = 0 indicates that the stream doesn't exist.
 * When rates and/or formats are zero, the supported values are queried
 * from the given nid.  The nid is used also by the default ops.prepare
 * and ops.cleanup callbacks.
 *
 * The driver needs to call ops.open in its open callback.  Similarly,
 * ops.close is supposed to be called in the close callback.
 * ops.prepare should be called in the prepare or hw_params callback
 * with the proper parameters for set up.
 * ops.cleanup should be called in hw_free for clean up of streams.
 *
 * This function returns 0 if successfull, or a negative error code.
 */
int __devinit snd_hda_build_pcms(struct hda_bus *bus)
{
      struct hda_codec *codec;

      list_for_each_entry(codec, &bus->codec_list, list) {
            int err = snd_hda_codec_build_pcms(codec);
            if (err < 0)
                  return err;
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_build_pcms);

/**
 * snd_hda_check_board_config - compare the current codec with the config table
 * @codec: the HDA codec
 * @num_configs: number of config enums
 * @models: array of model name strings
 * @tbl: configuration table, terminated by null entries
 *
 * Compares the modelname or PCI subsystem id of the current codec with the
 * given configuration table.  If a matching entry is found, returns its
 * config value (supposed to be 0 or positive).
 *
 * If no entries are matching, the function returns a negative value.
 */
int snd_hda_check_board_config(struct hda_codec *codec,
                         int num_configs, const char **models,
                         const struct snd_pci_quirk *tbl)
{
      if (codec->modelname && models) {
            int i;
            for (i = 0; i < num_configs; i++) {
                  if (models[i] &&
                      !strcmp(codec->modelname, models[i])) {
                        snd_printd(KERN_INFO "hda_codec: model '%s' is "
                                 "selected\n", models[i]);
                        return i;
                  }
            }
      }

      if (!codec->bus->pci || !tbl)
            return -1;

      tbl = snd_pci_quirk_lookup(codec->bus->pci, tbl);
      if (!tbl)
            return -1;
      if (tbl->value >= 0 && tbl->value < num_configs) {
#ifdef CONFIG_SND_DEBUG_VERBOSE
            char tmp[10];
            const char *model = NULL;
            if (models)
                  model = models[tbl->value];
            if (!model) {
                  sprintf(tmp, "#%d", tbl->value);
                  model = tmp;
            }
            snd_printdd(KERN_INFO "hda_codec: model '%s' is selected "
                      "for config %x:%x (%s)\n",
                      model, tbl->subvendor, tbl->subdevice,
                      (tbl->name ? tbl->name : "Unknown device"));
#endif
            return tbl->value;
      }
      return -1;
}
EXPORT_SYMBOL_HDA(snd_hda_check_board_config);

/**
 * snd_hda_check_board_codec_sid_config - compare the current codec
                                  subsystem ID with the
                                config table

         This is important for Gateway notebooks with SB450 HDA Audio
         where the vendor ID of the PCI device is:
            ATI Technologies Inc SB450 HDA Audio [1002:437b]
         and the vendor/subvendor are found only at the codec.

 * @codec: the HDA codec
 * @num_configs: number of config enums
 * @models: array of model name strings
 * @tbl: configuration table, terminated by null entries
 *
 * Compares the modelname or PCI subsystem id of the current codec with the
 * given configuration table.  If a matching entry is found, returns its
 * config value (supposed to be 0 or positive).
 *
 * If no entries are matching, the function returns a negative value.
 */
int snd_hda_check_board_codec_sid_config(struct hda_codec *codec,
                         int num_configs, const char **models,
                         const struct snd_pci_quirk *tbl)
{
      const struct snd_pci_quirk *q;

      /* Search for codec ID */
      for (q = tbl; q->subvendor; q++) {
            unsigned long vendorid = (q->subdevice) | (q->subvendor << 16);

            if (vendorid == codec->subsystem_id)
                  break;
      }

      if (!q->subvendor)
            return -1;

      tbl = q;

      if (tbl->value >= 0 && tbl->value < num_configs) {
#ifdef CONFIG_SND_DEBUG_DETECT
            char tmp[10];
            const char *model = NULL;
            if (models)
                  model = models[tbl->value];
            if (!model) {
                  sprintf(tmp, "#%d", tbl->value);
                  model = tmp;
            }
            snd_printdd(KERN_INFO "hda_codec: model '%s' is selected "
                      "for config %x:%x (%s)\n",
                      model, tbl->subvendor, tbl->subdevice,
                      (tbl->name ? tbl->name : "Unknown device"));
#endif
            return tbl->value;
      }
      return -1;
}
EXPORT_SYMBOL_HDA(snd_hda_check_board_codec_sid_config);

/**
 * snd_hda_add_new_ctls - create controls from the array
 * @codec: the HDA codec
 * @knew: the array of struct snd_kcontrol_new
 *
 * This helper function creates and add new controls in the given array.
 * The array must be terminated with an empty entry as terminator.
 *
 * Returns 0 if successful, or a negative error code.
 */
int snd_hda_add_new_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew)
{
      int err;

      for (; knew->name; knew++) {
            struct snd_kcontrol *kctl;
            kctl = snd_ctl_new1(knew, codec);
            if (!kctl)
                  return -ENOMEM;
            err = snd_hda_ctl_add(codec, kctl);
            if (err < 0) {
                  if (!codec->addr)
                        return err;
                  kctl = snd_ctl_new1(knew, codec);
                  if (!kctl)
                        return -ENOMEM;
                  kctl->id.device = codec->addr;
                  err = snd_hda_ctl_add(codec, kctl);
                  if (err < 0)
                        return err;
            }
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_add_new_ctls);

#ifdef CONFIG_SND_HDA_POWER_SAVE
static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
                        unsigned int power_state);

static void hda_power_work(struct work_struct *work)
{
      struct hda_codec *codec =
            container_of(work, struct hda_codec, power_work.work);
      struct hda_bus *bus = codec->bus;

      if (!codec->power_on || codec->power_count) {
            codec->power_transition = 0;
            return;
      }

      hda_call_codec_suspend(codec);
      if (bus->ops.pm_notify)
            bus->ops.pm_notify(bus);
}

static void hda_keep_power_on(struct hda_codec *codec)
{
      codec->power_count++;
      codec->power_on = 1;
}

void snd_hda_power_up(struct hda_codec *codec)
{
      struct hda_bus *bus = codec->bus;

      codec->power_count++;
      if (codec->power_on || codec->power_transition)
            return;

      codec->power_on = 1;
      if (bus->ops.pm_notify)
            bus->ops.pm_notify(bus);
      hda_call_codec_resume(codec);
      cancel_delayed_work(&codec->power_work);
      codec->power_transition = 0;
}
EXPORT_SYMBOL_HDA(snd_hda_power_up);

#define power_save(codec)     \
      ((codec)->bus->power_save ? *(codec)->bus->power_save : 0)

#define power_save(codec)     \
      ((codec)->bus->power_save ? *(codec)->bus->power_save : 0)

void snd_hda_power_down(struct hda_codec *codec)
{
      --codec->power_count;
      if (!codec->power_on || codec->power_count || codec->power_transition)
            return;
      if (power_save(codec)) {
            codec->power_transition = 1; /* avoid reentrance */
            queue_delayed_work(codec->bus->workq, &codec->power_work,
                        msecs_to_jiffies(power_save(codec) * 1000));
      }
}
EXPORT_SYMBOL_HDA(snd_hda_power_down);

int snd_hda_check_amp_list_power(struct hda_codec *codec,
                         struct hda_loopback_check *check,
                         hda_nid_t nid)
{
      struct hda_amp_list *p;
      int ch, v;

      if (!check->amplist)
            return 0;
      for (p = check->amplist; p->nid; p++) {
            if (p->nid == nid)
                  break;
      }
      if (!p->nid)
            return 0; /* nothing changed */

      for (p = check->amplist; p->nid; p++) {
            for (ch = 0; ch < 2; ch++) {
                  v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir,
                                       p->idx);
                  if (!(v & HDA_AMP_MUTE) && v > 0) {
                        if (!check->power_on) {
                              check->power_on = 1;
                              snd_hda_power_up(codec);
                        }
                        return 1;
                  }
            }
      }
      if (check->power_on) {
            check->power_on = 0;
            snd_hda_power_down(codec);
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_check_amp_list_power);
#endif

/*
 * Channel mode helper
 */
int snd_hda_ch_mode_info(struct hda_codec *codec,
                   struct snd_ctl_elem_info *uinfo,
                   const struct hda_channel_mode *chmode,
                   int num_chmodes)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = num_chmodes;
      if (uinfo->value.enumerated.item >= num_chmodes)
            uinfo->value.enumerated.item = num_chmodes - 1;
      sprintf(uinfo->value.enumerated.name, "%dch",
            chmode[uinfo->value.enumerated.item].channels);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_ch_mode_info);

int snd_hda_ch_mode_get(struct hda_codec *codec,
                  struct snd_ctl_elem_value *ucontrol,
                  const struct hda_channel_mode *chmode,
                  int num_chmodes,
                  int max_channels)
{
      int i;

      for (i = 0; i < num_chmodes; i++) {
            if (max_channels == chmode[i].channels) {
                  ucontrol->value.enumerated.item[0] = i;
                  break;
            }
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_ch_mode_get);

int snd_hda_ch_mode_put(struct hda_codec *codec,
                  struct snd_ctl_elem_value *ucontrol,
                  const struct hda_channel_mode *chmode,
                  int num_chmodes,
                  int *max_channelsp)
{
      unsigned int mode;

      mode = ucontrol->value.enumerated.item[0];
      if (mode >= num_chmodes)
            return -EINVAL;
      if (*max_channelsp == chmode[mode].channels)
            return 0;
      /* change the current channel setting */
      *max_channelsp = chmode[mode].channels;
      if (chmode[mode].sequence)
            snd_hda_sequence_write_cache(codec, chmode[mode].sequence);
      return 1;
}
EXPORT_SYMBOL_HDA(snd_hda_ch_mode_put);

/*
 * input MUX helper
 */
int snd_hda_input_mux_info(const struct hda_input_mux *imux,
                     struct snd_ctl_elem_info *uinfo)
{
      unsigned int index;

      uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
      uinfo->count = 1;
      uinfo->value.enumerated.items = imux->num_items;
      if (!imux->num_items)
            return 0;
      index = uinfo->value.enumerated.item;
      if (index >= imux->num_items)
            index = imux->num_items - 1;
      strcpy(uinfo->value.enumerated.name, imux->items[index].label);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_input_mux_info);

int snd_hda_input_mux_put(struct hda_codec *codec,
                    const struct hda_input_mux *imux,
                    struct snd_ctl_elem_value *ucontrol,
                    hda_nid_t nid,
                    unsigned int *cur_val)
{
      unsigned int idx;

      if (!imux->num_items)
            return 0;
      idx = ucontrol->value.enumerated.item[0];
      if (idx >= imux->num_items)
            idx = imux->num_items - 1;
      if (*cur_val == idx)
            return 0;
      snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
                          imux->items[idx].index);
      *cur_val = idx;
      return 1;
}
EXPORT_SYMBOL_HDA(snd_hda_input_mux_put);


/*
 * Multi-channel / digital-out PCM helper functions
 */

/* setup SPDIF output stream */
static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
                         unsigned int stream_tag, unsigned int format)
{
      /* turn off SPDIF once; otherwise the IEC958 bits won't be updated */
      if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE))
            set_dig_out_convert(codec, nid, 
                            codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff,
                            -1);
      snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
      if (codec->slave_dig_outs) {
            hda_nid_t *d;
            for (d = codec->slave_dig_outs; *d; d++)
                  snd_hda_codec_setup_stream(codec, *d, stream_tag, 0,
                                       format);
      }
      /* turn on again (if needed) */
      if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE))
            set_dig_out_convert(codec, nid,
                            codec->spdif_ctls & 0xff, -1);
}

static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid)
{
      snd_hda_codec_cleanup_stream(codec, nid);
      if (codec->slave_dig_outs) {
            hda_nid_t *d;
            for (d = codec->slave_dig_outs; *d; d++)
                  snd_hda_codec_cleanup_stream(codec, *d);
      }
}

/*
 * open the digital out in the exclusive mode
 */
int snd_hda_multi_out_dig_open(struct hda_codec *codec,
                         struct hda_multi_out *mout)
{
      mutex_lock(&codec->spdif_mutex);
      if (mout->dig_out_used == HDA_DIG_ANALOG_DUP)
            /* already opened as analog dup; reset it once */
            cleanup_dig_out_stream(codec, mout->dig_out_nid);
      mout->dig_out_used = HDA_DIG_EXCLUSIVE;
      mutex_unlock(&codec->spdif_mutex);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_open);

int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
                          struct hda_multi_out *mout,
                          unsigned int stream_tag,
                          unsigned int format,
                          struct snd_pcm_substream *substream)
{
      mutex_lock(&codec->spdif_mutex);
      setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
      mutex_unlock(&codec->spdif_mutex);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_prepare);

int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
                          struct hda_multi_out *mout)
{
      mutex_lock(&codec->spdif_mutex);
      cleanup_dig_out_stream(codec, mout->dig_out_nid);
      mutex_unlock(&codec->spdif_mutex);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_cleanup);

/*
 * release the digital out
 */
int snd_hda_multi_out_dig_close(struct hda_codec *codec,
                        struct hda_multi_out *mout)
{
      mutex_lock(&codec->spdif_mutex);
      mout->dig_out_used = 0;
      mutex_unlock(&codec->spdif_mutex);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_close);

/*
 * set up more restrictions for analog out
 */
int snd_hda_multi_out_analog_open(struct hda_codec *codec,
                          struct hda_multi_out *mout,
                          struct snd_pcm_substream *substream,
                          struct hda_pcm_stream *hinfo)
{
      struct snd_pcm_runtime *runtime = substream->runtime;
      runtime->hw.channels_max = mout->max_channels;
      if (mout->dig_out_nid) {
            if (!mout->analog_rates) {
                  mout->analog_rates = hinfo->rates;
                  mout->analog_formats = hinfo->formats;
                  mout->analog_maxbps = hinfo->maxbps;
            } else {
                  runtime->hw.rates = mout->analog_rates;
                  runtime->hw.formats = mout->analog_formats;
                  hinfo->maxbps = mout->analog_maxbps;
            }
            if (!mout->spdif_rates) {
                  snd_hda_query_supported_pcm(codec, mout->dig_out_nid,
                                        &mout->spdif_rates,
                                        &mout->spdif_formats,
                                        &mout->spdif_maxbps);
            }
            mutex_lock(&codec->spdif_mutex);
            if (mout->share_spdif) {
                  runtime->hw.rates &= mout->spdif_rates;
                  runtime->hw.formats &= mout->spdif_formats;
                  if (mout->spdif_maxbps < hinfo->maxbps)
                        hinfo->maxbps = mout->spdif_maxbps;
            }
            mutex_unlock(&codec->spdif_mutex);
      }
      return snd_pcm_hw_constraint_step(substream->runtime, 0,
                                SNDRV_PCM_HW_PARAM_CHANNELS, 2);
}
EXPORT_SYMBOL_HDA(snd_hda_multi_out_analog_open);

/*
 * set up the i/o for analog out
 * when the digital out is available, copy the front out to digital out, too.
 */
int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
                             struct hda_multi_out *mout,
                             unsigned int stream_tag,
                             unsigned int format,
                             struct snd_pcm_substream *substream)
{
      hda_nid_t *nids = mout->dac_nids;
      int chs = substream->runtime->channels;
      int i;

      mutex_lock(&codec->spdif_mutex);
      if (mout->dig_out_nid && mout->share_spdif &&
          mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
            if (chs == 2 &&
                snd_hda_is_supported_format(codec, mout->dig_out_nid,
                                    format) &&
                !(codec->spdif_status & IEC958_AES0_NONAUDIO)) {
                  mout->dig_out_used = HDA_DIG_ANALOG_DUP;
                  setup_dig_out_stream(codec, mout->dig_out_nid,
                                   stream_tag, format);
            } else {
                  mout->dig_out_used = 0;
                  cleanup_dig_out_stream(codec, mout->dig_out_nid);
            }
      }
      mutex_unlock(&codec->spdif_mutex);

      /* front */
      snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag,
                           0, format);
      if (!mout->no_share_stream &&
          mout->hp_nid && mout->hp_nid != nids[HDA_FRONT])
            /* headphone out will just decode front left/right (stereo) */
            snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag,
                                 0, format);
      /* extra outputs copied from front */
      for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
            if (!mout->no_share_stream && mout->extra_out_nid[i])
                  snd_hda_codec_setup_stream(codec,
                                       mout->extra_out_nid[i],
                                       stream_tag, 0, format);

      /* surrounds */
      for (i = 1; i < mout->num_dacs; i++) {
            if (chs >= (i + 1) * 2) /* independent out */
                  snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
                                       i * 2, format);
            else if (!mout->no_share_stream) /* copy front */
                  snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
                                       0, format);
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_multi_out_analog_prepare);

/*
 * clean up the setting for analog out
 */
int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
                             struct hda_multi_out *mout)
{
      hda_nid_t *nids = mout->dac_nids;
      int i;

      for (i = 0; i < mout->num_dacs; i++)
            snd_hda_codec_cleanup_stream(codec, nids[i]);
      if (mout->hp_nid)
            snd_hda_codec_cleanup_stream(codec, mout->hp_nid);
      for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
            if (mout->extra_out_nid[i])
                  snd_hda_codec_cleanup_stream(codec,
                                         mout->extra_out_nid[i]);
      mutex_lock(&codec->spdif_mutex);
      if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
            cleanup_dig_out_stream(codec, mout->dig_out_nid);
            mout->dig_out_used = 0;
      }
      mutex_unlock(&codec->spdif_mutex);
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_multi_out_analog_cleanup);

/*
 * Helper for automatic pin configuration
 */

static int is_in_nid_list(hda_nid_t nid, hda_nid_t *list)
{
      for (; *list; list++)
            if (*list == nid)
                  return 1;
      return 0;
}


/*
 * Sort an associated group of pins according to their sequence numbers.
 */
static void sort_pins_by_sequence(hda_nid_t * pins, short * sequences,
                          int num_pins)
{
      int i, j;
      short seq;
      hda_nid_t nid;
      
      for (i = 0; i < num_pins; i++) {
            for (j = i + 1; j < num_pins; j++) {
                  if (sequences[i] > sequences[j]) {
                        seq = sequences[i];
                        sequences[i] = sequences[j];
                        sequences[j] = seq;
                        nid = pins[i];
                        pins[i] = pins[j];
                        pins[j] = nid;
                  }
            }
      }
}


/*
 * Parse all pin widgets and store the useful pin nids to cfg
 *
 * The number of line-outs or any primary output is stored in line_outs,
 * and the corresponding output pins are assigned to line_out_pins[],
 * in the order of front, rear, CLFE, side, ...
 *
 * If more extra outputs (speaker and headphone) are found, the pins are
 * assisnged to hp_pins[] and speaker_pins[], respectively.  If no line-out jack
 * is detected, one of speaker of HP pins is assigned as the primary
 * output, i.e. to line_out_pins[0].  So, line_outs is always positive
 * if any analog output exists.
 * 
 * The analog input pins are assigned to input_pins array.
 * The digital input/output pins are assigned to dig_in_pin and dig_out_pin,
 * respectively.
 */
int snd_hda_parse_pin_def_config(struct hda_codec *codec,
                         struct auto_pin_cfg *cfg,
                         hda_nid_t *ignore_nids)
{
      hda_nid_t nid, end_nid;
      short seq, assoc_line_out, assoc_speaker;
      short sequences_line_out[ARRAY_SIZE(cfg->line_out_pins)];
      short sequences_speaker[ARRAY_SIZE(cfg->speaker_pins)];
      short sequences_hp[ARRAY_SIZE(cfg->hp_pins)];

      memset(cfg, 0, sizeof(*cfg));

      memset(sequences_line_out, 0, sizeof(sequences_line_out));
      memset(sequences_speaker, 0, sizeof(sequences_speaker));
      memset(sequences_hp, 0, sizeof(sequences_hp));
      assoc_line_out = assoc_speaker = 0;

      end_nid = codec->start_nid + codec->num_nodes;
      for (nid = codec->start_nid; nid < end_nid; nid++) {
            unsigned int wid_caps = get_wcaps(codec, nid);
            unsigned int wid_type =
                  (wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
            unsigned int def_conf;
            short assoc, loc;

            /* read all default configuration for pin complex */
            if (wid_type != AC_WID_PIN)
                  continue;
            /* ignore the given nids (e.g. pc-beep returns error) */
            if (ignore_nids && is_in_nid_list(nid, ignore_nids))
                  continue;

            def_conf = snd_hda_codec_get_pincfg(codec, nid);
            if (get_defcfg_connect(def_conf) == AC_JACK_PORT_NONE)
                  continue;
            loc = get_defcfg_location(def_conf);
            switch (get_defcfg_device(def_conf)) {
            case AC_JACK_LINE_OUT:
                  seq = get_defcfg_sequence(def_conf);
                  assoc = get_defcfg_association(def_conf);

                  if (!(wid_caps & AC_WCAP_STEREO))
                        if (!cfg->mono_out_pin)
                              cfg->mono_out_pin = nid;
                  if (!assoc)
                        continue;
                  if (!assoc_line_out)
                        assoc_line_out = assoc;
                  else if (assoc_line_out != assoc)
                        continue;
                  if (cfg->line_outs >= ARRAY_SIZE(cfg->line_out_pins))
                        continue;
                  cfg->line_out_pins[cfg->line_outs] = nid;
                  sequences_line_out[cfg->line_outs] = seq;
                  cfg->line_outs++;
                  break;
            case AC_JACK_SPEAKER:
                  seq = get_defcfg_sequence(def_conf);
                  assoc = get_defcfg_association(def_conf);
                  if (! assoc)
                        continue;
                  if (! assoc_speaker)
                        assoc_speaker = assoc;
                  else if (assoc_speaker != assoc)
                        continue;
                  if (cfg->speaker_outs >= ARRAY_SIZE(cfg->speaker_pins))
                        continue;
                  cfg->speaker_pins[cfg->speaker_outs] = nid;
                  sequences_speaker[cfg->speaker_outs] = seq;
                  cfg->speaker_outs++;
                  break;
            case AC_JACK_HP_OUT:
                  seq = get_defcfg_sequence(def_conf);
                  assoc = get_defcfg_association(def_conf);
                  if (cfg->hp_outs >= ARRAY_SIZE(cfg->hp_pins))
                        continue;
                  cfg->hp_pins[cfg->hp_outs] = nid;
                  sequences_hp[cfg->hp_outs] = (assoc << 4) | seq;
                  cfg->hp_outs++;
                  break;
            case AC_JACK_MIC_IN: {
                  int preferred, alt;
                  if (loc == AC_JACK_LOC_FRONT) {
                        preferred = AUTO_PIN_FRONT_MIC;
                        alt = AUTO_PIN_MIC;
                  } else {
                        preferred = AUTO_PIN_MIC;
                        alt = AUTO_PIN_FRONT_MIC;
                  }
                  if (!cfg->input_pins[preferred])
                        cfg->input_pins[preferred] = nid;
                  else if (!cfg->input_pins[alt])
                        cfg->input_pins[alt] = nid;
                  break;
            }
            case AC_JACK_LINE_IN:
                  if (loc == AC_JACK_LOC_FRONT)
                        cfg->input_pins[AUTO_PIN_FRONT_LINE] = nid;
                  else
                        cfg->input_pins[AUTO_PIN_LINE] = nid;
                  break;
            case AC_JACK_CD:
                  cfg->input_pins[AUTO_PIN_CD] = nid;
                  break;
            case AC_JACK_AUX:
                  cfg->input_pins[AUTO_PIN_AUX] = nid;
                  break;
            case AC_JACK_SPDIF_OUT:
            case AC_JACK_DIG_OTHER_OUT:
                  if (cfg->dig_outs >= ARRAY_SIZE(cfg->dig_out_pins))
                        continue;
                  cfg->dig_out_pins[cfg->dig_outs] = nid;
                  cfg->dig_out_type[cfg->dig_outs] =
                        (loc == AC_JACK_LOC_HDMI) ?
                        HDA_PCM_TYPE_HDMI : HDA_PCM_TYPE_SPDIF;
                  cfg->dig_outs++;
                  break;
            case AC_JACK_SPDIF_IN:
            case AC_JACK_DIG_OTHER_IN:
                  cfg->dig_in_pin = nid;
                  if (loc == AC_JACK_LOC_HDMI)
                        cfg->dig_in_type = HDA_PCM_TYPE_HDMI;
                  else
                        cfg->dig_in_type = HDA_PCM_TYPE_SPDIF;
                  break;
            }
      }

      /* FIX-UP:
       * If no line-out is defined but multiple HPs are found,
       * some of them might be the real line-outs.
       */
      if (!cfg->line_outs && cfg->hp_outs > 1) {
            int i = 0;
            while (i < cfg->hp_outs) {
                  /* The real HPs should have the sequence 0x0f */
                  if ((sequences_hp[i] & 0x0f) == 0x0f) {
                        i++;
                        continue;
                  }
                  /* Move it to the line-out table */
                  cfg->line_out_pins[cfg->line_outs] = cfg->hp_pins[i];
                  sequences_line_out[cfg->line_outs] = sequences_hp[i];
                  cfg->line_outs++;
                  cfg->hp_outs--;
                  memmove(cfg->hp_pins + i, cfg->hp_pins + i + 1,
                        sizeof(cfg->hp_pins[0]) * (cfg->hp_outs - i));
                  memmove(sequences_hp + i - 1, sequences_hp + i,
                        sizeof(sequences_hp[0]) * (cfg->hp_outs - i));
            }
      }

      /* sort by sequence */
      sort_pins_by_sequence(cfg->line_out_pins, sequences_line_out,
                        cfg->line_outs);
      sort_pins_by_sequence(cfg->speaker_pins, sequences_speaker,
                        cfg->speaker_outs);
      sort_pins_by_sequence(cfg->hp_pins, sequences_hp,
                        cfg->hp_outs);
      
      /* if we have only one mic, make it AUTO_PIN_MIC */
      if (!cfg->input_pins[AUTO_PIN_MIC] &&
          cfg->input_pins[AUTO_PIN_FRONT_MIC]) {
            cfg->input_pins[AUTO_PIN_MIC] =
                  cfg->input_pins[AUTO_PIN_FRONT_MIC];
            cfg->input_pins[AUTO_PIN_FRONT_MIC] = 0;
      }
      /* ditto for line-in */
      if (!cfg->input_pins[AUTO_PIN_LINE] &&
          cfg->input_pins[AUTO_PIN_FRONT_LINE]) {
            cfg->input_pins[AUTO_PIN_LINE] =
                  cfg->input_pins[AUTO_PIN_FRONT_LINE];
            cfg->input_pins[AUTO_PIN_FRONT_LINE] = 0;
      }

      /*
       * FIX-UP: if no line-outs are detected, try to use speaker or HP pin
       * as a primary output
       */
      if (!cfg->line_outs) {
            if (cfg->speaker_outs) {
                  cfg->line_outs = cfg->speaker_outs;
                  memcpy(cfg->line_out_pins, cfg->speaker_pins,
                         sizeof(cfg->speaker_pins));
                  cfg->speaker_outs = 0;
                  memset(cfg->speaker_pins, 0, sizeof(cfg->speaker_pins));
                  cfg->line_out_type = AUTO_PIN_SPEAKER_OUT;
            } else if (cfg->hp_outs) {
                  cfg->line_outs = cfg->hp_outs;
                  memcpy(cfg->line_out_pins, cfg->hp_pins,
                         sizeof(cfg->hp_pins));
                  cfg->hp_outs = 0;
                  memset(cfg->hp_pins, 0, sizeof(cfg->hp_pins));
                  cfg->line_out_type = AUTO_PIN_HP_OUT;
            }
      }

      /* Reorder the surround channels
       * ALSA sequence is front/surr/clfe/side
       * HDA sequence is:
       *    4-ch: front/surr  =>  OK as it is
       *    6-ch: front/clfe/surr
       *    8-ch: front/clfe/rear/side|fc
       */
      switch (cfg->line_outs) {
      case 3:
      case 4:
            nid = cfg->line_out_pins[1];
            cfg->line_out_pins[1] = cfg->line_out_pins[2];
            cfg->line_out_pins[2] = nid;
            break;
      }

      /*
       * debug prints of the parsed results
       */
      snd_printd("autoconfig: line_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
               cfg->line_outs, cfg->line_out_pins[0], cfg->line_out_pins[1],
               cfg->line_out_pins[2], cfg->line_out_pins[3],
               cfg->line_out_pins[4]);
      snd_printd("   speaker_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
               cfg->speaker_outs, cfg->speaker_pins[0],
               cfg->speaker_pins[1], cfg->speaker_pins[2],
               cfg->speaker_pins[3], cfg->speaker_pins[4]);
      snd_printd("   hp_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
               cfg->hp_outs, cfg->hp_pins[0],
               cfg->hp_pins[1], cfg->hp_pins[2],
               cfg->hp_pins[3], cfg->hp_pins[4]);
      snd_printd("   mono: mono_out=0x%x\n", cfg->mono_out_pin);
      if (cfg->dig_outs)
            snd_printd("   dig-out=0x%x/0x%x\n",
                     cfg->dig_out_pins[0], cfg->dig_out_pins[1]);
      snd_printd("   inputs: mic=0x%x, fmic=0x%x, line=0x%x, fline=0x%x,"
               " cd=0x%x, aux=0x%x\n",
               cfg->input_pins[AUTO_PIN_MIC],
               cfg->input_pins[AUTO_PIN_FRONT_MIC],
               cfg->input_pins[AUTO_PIN_LINE],
               cfg->input_pins[AUTO_PIN_FRONT_LINE],
               cfg->input_pins[AUTO_PIN_CD],
               cfg->input_pins[AUTO_PIN_AUX]);
      if (cfg->dig_in_pin)
            snd_printd("   dig-in=0x%x\n", cfg->dig_in_pin);

      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_parse_pin_def_config);

/* labels for input pins */
const char *auto_pin_cfg_labels[AUTO_PIN_LAST] = {
      "Mic", "Front Mic", "Line", "Front Line", "CD", "Aux"
};
EXPORT_SYMBOL_HDA(auto_pin_cfg_labels);


#ifdef CONFIG_PM
/*
 * power management
 */

/**
 * snd_hda_suspend - suspend the codecs
 * @bus: the HDA bus
 * @state: suspsend state
 *
 * Returns 0 if successful.
 */
int snd_hda_suspend(struct hda_bus *bus, pm_message_t state)
{
      struct hda_codec *codec;

      list_for_each_entry(codec, &bus->codec_list, list) {
#ifdef CONFIG_SND_HDA_POWER_SAVE
            if (!codec->power_on)
                  continue;
#endif
            hda_call_codec_suspend(codec);
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_suspend);

/**
 * snd_hda_resume - resume the codecs
 * @bus: the HDA bus
 *
 * Returns 0 if successful.
 *
 * This fucntion is defined only when POWER_SAVE isn't set.
 * In the power-save mode, the codec is resumed dynamically.
 */
int snd_hda_resume(struct hda_bus *bus)
{
      struct hda_codec *codec;

      list_for_each_entry(codec, &bus->codec_list, list) {
            if (snd_hda_codec_needs_resume(codec))
                  hda_call_codec_resume(codec);
      }
      return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_resume);
#endif /* CONFIG_PM */

/*
 * generic arrays
 */

/* get a new element from the given array
 * if it exceeds the pre-allocated array size, re-allocate the array
 */
void *snd_array_new(struct snd_array *array)
{
      if (array->used >= array->alloced) {
            int num = array->alloced + array->alloc_align;
            void *nlist;
            if (snd_BUG_ON(num >= 4096))
                  return NULL;
            nlist = kcalloc(num + 1, array->elem_size, GFP_KERNEL);
            if (!nlist)
                  return NULL;
            if (array->list) {
                  memcpy(nlist, array->list,
                         array->elem_size * array->alloced);
                  kfree(array->list);
            }
            array->list = nlist;
            array->alloced = num;
      }
      return snd_array_elem(array, array->used++);
}
EXPORT_SYMBOL_HDA(snd_array_new);

/* free the given array elements */
void snd_array_free(struct snd_array *array)
{
      kfree(array->list);
      array->used = 0;
      array->alloced = 0;
      array->list = NULL;
}
EXPORT_SYMBOL_HDA(snd_array_free);

/*
 * used by hda_proc.c and hda_eld.c
 */
void snd_print_pcm_rates(int pcm, char *buf, int buflen)
{
      static unsigned int rates[] = {
            8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
            96000, 176400, 192000, 384000
      };
      int i, j;

      for (i = 0, j = 0; i < ARRAY_SIZE(rates); i++)
            if (pcm & (1 << i))
                  j += snprintf(buf + j, buflen - j,  " %d", rates[i]);

      buf[j] = '\0'; /* necessary when j == 0 */
}
EXPORT_SYMBOL_HDA(snd_print_pcm_rates);

void snd_print_pcm_bits(int pcm, char *buf, int buflen)
{
      static unsigned int bits[] = { 8, 16, 20, 24, 32 };
      int i, j;

      for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++)
            if (pcm & (AC_SUPPCM_BITS_8 << i))
                  j += snprintf(buf + j, buflen - j,  " %d", bits[i]);

      buf[j] = '\0'; /* necessary when j == 0 */
}
EXPORT_SYMBOL_HDA(snd_print_pcm_bits);

MODULE_DESCRIPTION("HDA codec core");
MODULE_LICENSE("GPL");

Generated by  Doxygen 1.6.0   Back to index