Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1856 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
new file mode 100644
index 000000000000..9ed117ac0c09
--- /dev/null
+++ b/sound/pci/hda/hda_codec.c
@@ -0,0 +1,1856 @@
+/*
+ * 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 <sound/driver.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include "hda_codec.h"
+#include <sound/asoundef.h>
+#include <sound/initval.h>
+#include "hda_local.h"
+
+
+MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
+MODULE_DESCRIPTION("Universal interface for High Definition Audio Codec");
+MODULE_LICENSE("GPL");
+
+
+/*
+ * vendor / preset table
+ */
+
+struct hda_vendor_id {
+	unsigned int id;
+	const char *name;
+};
+
+/* codec vendor labels */
+static struct hda_vendor_id hda_vendor_ids[] = {
+	{ 0x10ec, "Realtek" },
+	{ 0x13f6, "C-Media" },
+	{ 0x434d, "C-Media" },
+	{} /* terminator */
+};
+
+/* codec presets */
+#include "hda_patch.h"
+
+
+/**
+ * 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)
+{
+	unsigned int res;
+	down(&codec->bus->cmd_mutex);
+	if (! codec->bus->ops.command(codec, nid, direct, verb, parm))
+		res = codec->bus->ops.get_response(codec);
+	else
+		res = (unsigned int)-1;
+	up(&codec->bus->cmd_mutex);
+	return res;
+}
+
+/**
+ * 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)
+{
+	int err;
+	down(&codec->bus->cmd_mutex);
+	err = codec->bus->ops.command(codec, nid, direct, verb, parm);
+	up(&codec->bus->cmd_mutex);
+	return err;
+}
+
+/**
+ * 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);
+}
+
+/**
+ * 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);
+	*start_id = (parm >> 16) & 0x7fff;
+	return (int)(parm & 0x7fff);
+}
+
+/**
+ * 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, j, conn_len, num_tupples, conns;
+	unsigned int shift, num_elems, mask;
+
+	snd_assert(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;
+	num_tupples = num_elems / 2;
+	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;
+	for (i = 0; i < conn_len; i += num_elems) {
+		parm = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONNECT_LIST, i);
+		for (j = 0; j < num_tupples; j++) {
+			int range_val;
+			hda_nid_t val1, val2, n;
+			range_val = parm & (1 << (shift-1)); /* ranges */
+			val1 = parm & mask;
+			parm >>= shift;
+			val2 = parm & mask;
+			parm >>= shift;
+			if (range_val) {
+				/* ranges between val1 and val2 */
+				if (val1 > val2) {
+					snd_printk(KERN_WARNING "hda_codec: invalid dep_range_val %x:%x\n", val1, val2);
+					continue;
+				}
+				for (n = val1; n <= val2; n++) {
+					if (conns >= max_conns)
+						return -EINVAL;
+					conn_list[conns++] = n;
+				}
+			} else {
+				if (! val1)
+					break;
+				if (conns >= max_conns)
+					return -EINVAL;
+				conn_list[conns++] = val1;
+				if (! val2)
+					break;
+				if (conns >= max_conns)
+					return -EINVAL;
+				conn_list[conns++] = val2;
+			}
+		}
+	}
+	return conns;
+}
+
+
+/**
+ * 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;
+
+	if ((unsol = bus->unsol) == NULL)
+		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(unsol->workq, &unsol->work);
+
+	return 0;
+}
+
+/*
+ * process queueud unsolicited events
+ */
+static void process_unsol_events(void *data)
+{
+	struct hda_bus *bus = data;
+	struct hda_bus_unsolicited *unsol = bus->unsol;
+	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;
+
+	unsol = kcalloc(1, sizeof(*unsol), GFP_KERNEL);
+	if (! unsol) {
+		snd_printk(KERN_ERR "hda_codec: can't allocate unsolicited queue\n");
+		return -ENOMEM;
+	}
+	unsol->workq = create_workqueue("hda_codec");
+	if (! unsol->workq) {
+		snd_printk(KERN_ERR "hda_codec: can't create workqueue\n");
+		kfree(unsol);
+		return -ENOMEM;
+	}
+	INIT_WORK(&unsol->work, process_unsol_events, 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 list_head *p, *n;
+
+	if (! bus)
+		return 0;
+	if (bus->unsol) {
+		destroy_workqueue(bus->unsol->workq);
+		kfree(bus->unsol);
+	}
+	list_for_each_safe(p, n, &bus->codec_list) {
+		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
+		snd_hda_codec_free(codec);
+	}
+	if (bus->ops.private_free)
+		bus->ops.private_free(bus);
+	kfree(bus);
+	return 0;
+}
+
+static int snd_hda_bus_dev_free(snd_device_t *device)
+{
+	struct hda_bus *bus = device->device_data;
+	return snd_hda_bus_free(bus);
+}
+
+/**
+ * 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 snd_hda_bus_new(snd_card_t *card, const struct hda_bus_template *temp,
+		    struct hda_bus **busp)
+{
+	struct hda_bus *bus;
+	int err;
+	static snd_device_ops_t dev_ops = {
+		.dev_free = snd_hda_bus_dev_free,
+	};
+
+	snd_assert(temp, return -EINVAL);
+	snd_assert(temp->ops.command && temp->ops.get_response, return -EINVAL);
+
+	if (busp)
+		*busp = NULL;
+
+	bus = kcalloc(1, 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->ops = temp->ops;
+
+	init_MUTEX(&bus->cmd_mutex);
+	INIT_LIST_HEAD(&bus->codec_list);
+
+	init_unsol_queue(bus);
+
+	if ((err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops)) < 0) {
+		snd_hda_bus_free(bus);
+		return err;
+	}
+	if (busp)
+		*busp = bus;
+	return 0;
+}
+
+
+/*
+ * find a matching codec preset
+ */
+static const struct hda_codec_preset *find_codec_preset(struct hda_codec *codec)
+{
+	const struct hda_codec_preset **tbl, *preset;
+
+	for (tbl = hda_preset_tables; *tbl; tbl++) {
+		for (preset = *tbl; preset->id; preset++) {
+			u32 mask = preset->mask;
+			if (! mask)
+				mask = ~0;
+			if (preset->id == (codec->vendor_id & mask))
+				return preset;
+		}
+	}
+	return NULL;
+}
+
+/*
+ * snd_hda_get_codec_name - store the codec name
+ */
+void snd_hda_get_codec_name(struct hda_codec *codec,
+			    char *name, int namelen)
+{
+	const struct hda_vendor_id *c;
+	const char *vendor = NULL;
+	u16 vendor_id = codec->vendor_id >> 16;
+	char tmp[16];
+
+	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, namelen, "%s %s", vendor, codec->preset->name);
+	else
+		snprintf(name, namelen, "%s ID %x", vendor, codec->vendor_id & 0xffff);
+}
+
+/*
+ * look for an AFG node
+ *
+ * return 0 if not found
+ */
+static int look_for_afg_node(struct hda_codec *codec)
+{
+	int i, total_nodes;
+	hda_nid_t nid;
+
+	total_nodes = snd_hda_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
+	for (i = 0; i < total_nodes; i++, nid++) {
+		if ((snd_hda_param_read(codec, nid, AC_PAR_FUNCTION_TYPE) & 0xff) ==
+		    AC_GRP_AUDIO_FUNCTION)
+			return nid;
+	}
+	return 0;
+}
+
+/*
+ * codec destructor
+ */
+static void snd_hda_codec_free(struct hda_codec *codec)
+{
+	if (! codec)
+		return;
+	list_del(&codec->list);
+	codec->bus->caddr_tbl[codec->addr] = NULL;
+	if (codec->patch_ops.free)
+		codec->patch_ops.free(codec);
+	kfree(codec);
+}
+
+static void init_amp_hash(struct hda_codec *codec);
+
+/**
+ * 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 snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
+		      struct hda_codec **codecp)
+{
+	struct hda_codec *codec;
+	char component[13];
+	int err;
+
+	snd_assert(bus, return -EINVAL);
+	snd_assert(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 = kcalloc(1, 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;
+	init_MUTEX(&codec->spdif_mutex);
+	init_amp_hash(codec);
+
+	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);
+	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);
+
+	/* FIXME: support for multiple AFGs? */
+	codec->afg = look_for_afg_node(codec);
+	if (! codec->afg) {
+		snd_printk(KERN_ERR "hda_codec: no AFG node found\n");
+		snd_hda_codec_free(codec);
+		return -ENODEV;
+	}
+
+	codec->preset = find_codec_preset(codec);
+	if (! *bus->card->mixername)
+		snd_hda_get_codec_name(codec, bus->card->mixername,
+				       sizeof(bus->card->mixername));
+
+	if (codec->preset && codec->preset->patch)
+		err = codec->preset->patch(codec);
+	else
+		err = snd_hda_parse_generic_codec(codec);
+	if (err < 0) {
+		snd_hda_codec_free(codec);
+		return err;
+	}
+
+	snd_hda_codec_proc_new(codec);
+
+	sprintf(component, "HDA:%08x", codec->vendor_id);
+	snd_component_add(codec->bus->card, component);
+
+	if (codecp)
+		*codecp = codec;
+	return 0;
+}
+
+/**
+ * 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)
+{
+	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);
+}
+
+
+/*
+ * amp access functions
+ */
+
+#define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + (idx) * 32 + (dir) * 64)
+#define INFO_AMP_CAPS	(1<<0)
+#define INFO_AMP_VOL	(1<<1)
+
+/* initialize the hash table */
+static void init_amp_hash(struct hda_codec *codec)
+{
+	memset(codec->amp_hash, 0xff, sizeof(codec->amp_hash));
+	codec->num_amp_entries = 0;
+}
+
+/* query the hash.  allocate an entry if not found. */
+static struct hda_amp_info *get_alloc_amp_hash(struct hda_codec *codec, u32 key)
+{
+	u16 idx = key % (u16)ARRAY_SIZE(codec->amp_hash);
+	u16 cur = codec->amp_hash[idx];
+	struct hda_amp_info *info;
+
+	while (cur != 0xffff) {
+		info = &codec->amp_info[cur];
+		if (info->key == key)
+			return info;
+		cur = info->next;
+	}
+
+	/* add a new hash entry */
+	if (codec->num_amp_entries >= ARRAY_SIZE(codec->amp_info)) {
+		snd_printk(KERN_ERR "hda_codec: Tooooo many amps!\n");
+		return NULL;
+	}
+	cur = codec->num_amp_entries++;
+	info = &codec->amp_info[cur];
+	info->key = key;
+	info->status = 0; /* not initialized yet */
+	info->next = codec->amp_hash[idx];
+	codec->amp_hash[idx] = cur;
+
+	return info;
+}
+
+/*
+ * query AMP capabilities for the given widget and direction
+ */
+static u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
+{
+	struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, 0));
+
+	if (! info)
+		return 0;
+	if (! (info->status & INFO_AMP_CAPS)) {
+		if (!(snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) & 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);
+		info->status |= INFO_AMP_CAPS;
+	}
+	return info->amp_caps;
+}
+
+/*
+ * read the current volume to info
+ * if the cache exists, read from the cache.
+ */
+static void 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->status & (INFO_AMP_VOL << ch))
+		return;
+
+	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->status |= INFO_AMP_VOL << ch;
+}
+
+/*
+ * write the current volume in info to the h/w
+ */
+static void put_vol_mute(struct hda_codec *codec,
+			 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);
+}
+
+/*
+ * read/write 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 = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
+	if (! info)
+		return 0;
+	get_vol_mute(codec, info, nid, ch, direction, index);
+	return info->vol[ch];
+}
+
+int snd_hda_codec_amp_write(struct hda_codec *codec, hda_nid_t nid, int ch, int direction, int idx, int val)
+{
+	struct hda_amp_info *info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));
+	if (! info)
+		return 0;
+	get_vol_mute(codec, info, nid, ch, direction, idx);
+	if (info->vol[ch] == val && ! codec->in_resume)
+		return 0;
+	put_vol_mute(codec, nid, ch, direction, idx, val);
+	info->vol[ch] = val;
+	return 1;
+}
+
+
+/*
+ * AMP control callbacks
+ */
+/* retrieve parameters from private_value */
+#define get_amp_nid(kc)		((kc)->private_value & 0xffff)
+#define get_amp_channels(kc)	(((kc)->private_value >> 16) & 0x3)
+#define get_amp_direction(kc)	(((kc)->private_value >> 18) & 0x1)
+#define get_amp_index(kc)	(((kc)->private_value >> 19) & 0xf)
+
+/* volume */
+int snd_hda_mixer_amp_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *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);
+	u32 caps;
+
+	caps = query_amp_caps(codec, nid, dir);
+	caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; /* num steps */
+	if (! caps) {
+		printk(KERN_WARNING "hda_codec: num_steps = 0 for NID=0x%x\n", nid);
+		return -EINVAL;
+	}
+	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;
+}
+
+int snd_hda_mixer_amp_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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) & 0x7f;
+	if (chs & 2)
+		*valp = snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x7f;
+	return 0;
+}
+
+int snd_hda_mixer_amp_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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);
+	int val;
+	long *valp = ucontrol->value.integer.value;
+	int change = 0;
+
+	if (chs & 1) {
+		val = *valp & 0x7f;
+		val |= snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x80;
+		change = snd_hda_codec_amp_write(codec, nid, 0, dir, idx, val);
+		valp++;
+	}
+	if (chs & 2) {
+		val = *valp & 0x7f;
+		val |= snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x80;
+		change |= snd_hda_codec_amp_write(codec, nid, 1, dir, idx, val);
+	}
+	return change;
+}
+
+/* switch */
+int snd_hda_mixer_amp_switch_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *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;
+}
+
+int snd_hda_mixer_amp_switch_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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) & 0x80) ? 0 : 1;
+	if (chs & 2)
+		*valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x80) ? 0 : 1;
+	return 0;
+}
+
+int snd_hda_mixer_amp_switch_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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);
+	int val;
+	long *valp = ucontrol->value.integer.value;
+	int change = 0;
+
+	if (chs & 1) {
+		val = snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x7f;
+		val |= *valp ? 0 : 0x80;
+		change = snd_hda_codec_amp_write(codec, nid, 0, dir, idx, val);
+		valp++;
+	}
+	if (chs & 2) {
+		val = snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x7f;
+		val |= *valp ? 0 : 0x80;
+		change = snd_hda_codec_amp_write(codec, nid, 1, dir, idx, val);
+	}
+	return change;
+}
+
+/*
+ * SPDIF out controls
+ */
+
+static int snd_hda_spdif_mask_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+	uinfo->count = 1;
+	return 0;
+}
+
+static int snd_hda_spdif_cmask_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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 |= 1 << 6;
+	if (sbits & IEC958_AES0_NONAUDIO)
+		val |= 1 << 5;
+	if (sbits & IEC958_AES0_PROFESSIONAL) {
+		if ((sbits & IEC958_AES0_PRO_EMPHASIS) == IEC958_AES0_PRO_EMPHASIS_5015)
+			val |= 1 << 3;
+	} else {
+		if ((sbits & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_5015)
+			val |= 1 << 3;
+		if (! (sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
+			val |= 1 << 4;
+		if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
+			val |= 1 << 7;
+		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 & (1 << 5))
+		sbits |= IEC958_AES0_NONAUDIO;
+	if (val & (1 << 6))
+		sbits |= IEC958_AES0_PROFESSIONAL;
+	if (sbits & IEC958_AES0_PROFESSIONAL) {
+		if (sbits & (1 << 3))
+			sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
+	} else {
+		if (val & (1 << 3))
+			sbits |= IEC958_AES0_CON_EMPHASIS_5015;
+		if (! (val & (1 << 4)))
+			sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
+		if (val & (1 << 7))
+			sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
+		sbits |= val & (0x7f << 8);
+	}
+	return sbits;
+}
+
+static int snd_hda_spdif_default_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	hda_nid_t nid = kcontrol->private_value;
+	unsigned short val;
+	int change;
+
+	down(&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 || codec->in_resume) {
+		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val & 0xff);
+		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_2, val >> 8);
+	}
+
+	up(&codec->spdif_mutex);
+	return change;
+}
+
+static int snd_hda_spdif_out_switch_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int snd_hda_spdif_out_switch_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+
+	ucontrol->value.integer.value[0] = codec->spdif_ctls & 1;
+	return 0;
+}
+
+static int snd_hda_spdif_out_switch_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	hda_nid_t nid = kcontrol->private_value;
+	unsigned short val;
+	int change;
+
+	down(&codec->spdif_mutex);
+	val = codec->spdif_ctls & ~1;
+	if (ucontrol->value.integer.value[0])
+		val |= 1;
+	change = codec->spdif_ctls != val;
+	if (change || codec->in_resume) {
+		codec->spdif_ctls = val;
+		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val & 0xff);
+		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
+				    AC_AMP_SET_RIGHT | AC_AMP_SET_LEFT |
+				    AC_AMP_SET_OUTPUT | ((val & 1) ? 0 : 0x80));
+	}
+	up(&codec->spdif_mutex);
+	return change;
+}
+
+static snd_kcontrol_new_t 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 */
+};
+
+/**
+ * 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;
+	snd_kcontrol_t *kctl;
+	snd_kcontrol_new_t *dig_mix;
+
+	for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
+		kctl = snd_ctl_new1(dig_mix, codec);
+		kctl->private_value = nid;
+		if ((err = snd_ctl_add(codec->bus->card, kctl)) < 0)
+			return err;
+	}
+	codec->spdif_ctls = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0);
+	codec->spdif_status = convert_to_spdif_status(codec->spdif_ctls);
+	return 0;
+}
+
+/*
+ * SPDIF input
+ */
+
+#define snd_hda_spdif_in_switch_info	snd_hda_spdif_out_switch_info
+
+static int snd_hda_spdif_in_switch_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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;
+
+	down(&codec->spdif_mutex);
+	change = codec->spdif_in_enable != val;
+	if (change || codec->in_resume) {
+		codec->spdif_in_enable = val;
+		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1, val);
+	}
+	up(&codec->spdif_mutex);
+	return change;
+}
+
+static int snd_hda_spdif_in_status_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *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, 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 snd_kcontrol_new_t 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;
+	snd_kcontrol_t *kctl;
+	snd_kcontrol_new_t *dig_mix;
+
+	for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
+		kctl = snd_ctl_new1(dig_mix, codec);
+		kctl->private_value = nid;
+		if ((err = snd_ctl_add(codec->bus->card, kctl)) < 0)
+			return err;
+	}
+	codec->spdif_in_enable = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0) & 1;
+	return 0;
+}
+
+
+/**
+ * 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 snd_hda_build_controls(struct hda_bus *bus)
+{
+	struct list_head *p;
+
+	/* build controls */
+	list_for_each(p, &bus->codec_list) {
+		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
+		int err;
+		if (! codec->patch_ops.build_controls)
+			continue;
+		err = codec->patch_ops.build_controls(codec);
+		if (err < 0)
+			return err;
+	}
+
+	/* initialize */
+	list_for_each(p, &bus->codec_list) {
+		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
+		int err;
+		if (! codec->patch_ops.init)
+			continue;
+		err = codec->patch_ops.init(codec);
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+
+
+/*
+ * stream formats
+ */
+static unsigned int rate_bits[][3] = {
+	/* rate in Hz, ALSA rate bitmask, HDA format value */
+	{ 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 */
+	{ 0 }
+};
+
+/**
+ * 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][0]; i++)
+		if (rate_bits[i][0] == rate) {
+			val = rate_bits[i][2];
+			break;
+		}
+	if (! rate_bits[i][0]) {
+		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;
+}
+
+/**
+ * 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.
+ */
+int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
+				u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
+{
+	int i;
+	unsigned int val, streams;
+
+	val = 0;
+	if (nid != codec->afg &&
+	    snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) & 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; rate_bits[i][0]; i++) {
+			if (val & (1 << i))
+				rates |= rate_bits[i][1];
+		}
+		*ratesp = rates;
+	}
+
+	if (formatsp || bpsp) {
+		u64 formats = 0;
+		unsigned int bps;
+		unsigned int wcaps;
+
+		wcaps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
+		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_20)
+					bps = 20;
+				else if (val & AC_SUPPCM_BITS_24)
+					bps = 24;
+			}
+		}
+		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 (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 &&
+	    snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP) & 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; rate_bits[i][0]; i++)
+		if (rate_bits[i][2] == rate) {
+			if (val & (1 << i))
+				break;
+			return 0;
+		}
+	if (! rate_bits[i][0])
+		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;
+}
+
+/*
+ * PCM stuff
+ */
+static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
+				      struct hda_codec *codec,
+				      snd_pcm_substream_t *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,
+				   snd_pcm_substream_t *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,
+				   snd_pcm_substream_t *substream)
+{
+	snd_hda_codec_setup_stream(codec, hinfo->nid, 0, 0, 0);
+	return 0;
+}
+
+static int set_pcm_default_values(struct hda_codec *codec, struct hda_pcm_stream *info)
+{
+	if (info->nid) {
+		/* query support PCM information from the given NID */
+		if (! info->rates || ! info->formats)
+			snd_hda_query_supported_pcm(codec, info->nid,
+						    info->rates ? NULL : &info->rates,
+						    info->formats ? NULL : &info->formats,
+						    info->maxbps ? NULL : &info->maxbps);
+	}
+	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) {
+		snd_assert(info->nid, return -EINVAL);
+		info->ops.prepare = hda_pcm_default_prepare;
+	}
+	if (info->ops.prepare == NULL) {
+		snd_assert(info->nid, return -EINVAL);
+		info->ops.prepare = hda_pcm_default_prepare;
+	}
+	if (info->ops.cleanup == NULL) {
+		snd_assert(info->nid, return -EINVAL);
+		info->ops.cleanup = hda_pcm_default_cleanup;
+	}
+	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 snd_hda_build_pcms(struct hda_bus *bus)
+{
+	struct list_head *p;
+
+	list_for_each(p, &bus->codec_list) {
+		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
+		unsigned int pcm, s;
+		int err;
+		if (! codec->patch_ops.build_pcms)
+			continue;
+		err = codec->patch_ops.build_pcms(codec);
+		if (err < 0)
+			return err;
+		for (pcm = 0; pcm < codec->num_pcms; pcm++) {
+			for (s = 0; s < 2; s++) {
+				struct hda_pcm_stream *info;
+				info = &codec->pcm_info[pcm].stream[s];
+				if (! info->substreams)
+					continue;
+				err = set_pcm_default_values(codec, info);
+				if (err < 0)
+					return err;
+			}
+		}
+	}
+	return 0;
+}
+
+
+/**
+ * snd_hda_check_board_config - compare the current codec with the config table
+ * @codec: the HDA codec
+ * @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, struct hda_board_config *tbl)
+{
+	struct hda_board_config *c;
+
+	if (codec->bus->modelname) {
+		for (c = tbl; c->modelname || c->pci_vendor; c++) {
+			if (c->modelname &&
+			    ! strcmp(codec->bus->modelname, c->modelname)) {
+				snd_printd(KERN_INFO "hda_codec: model '%s' is selected\n", c->modelname);
+				return c->config;
+			}
+		}
+	}
+
+	if (codec->bus->pci) {
+		u16 subsystem_vendor, subsystem_device;
+		pci_read_config_word(codec->bus->pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
+		pci_read_config_word(codec->bus->pci, PCI_SUBSYSTEM_ID, &subsystem_device);
+		for (c = tbl; c->modelname || c->pci_vendor; c++) {
+			if (c->pci_vendor == subsystem_vendor &&
+			    c->pci_device == subsystem_device)
+				return c->config;
+		}
+	}
+	return -1;
+}
+
+/**
+ * snd_hda_add_new_ctls - create controls from the array
+ * @codec: the HDA codec
+ * @knew: the array of snd_kcontrol_new_t
+ *
+ * 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, snd_kcontrol_new_t *knew)
+{
+	int err;
+
+	for (; knew->name; knew++) {
+		err = snd_ctl_add(codec->bus->card, snd_ctl_new1(knew, codec));
+		if (err < 0)
+			return err;
+	}
+	return 0;
+}
+
+
+/*
+ * input MUX helper
+ */
+int snd_hda_input_mux_info(const struct hda_input_mux *imux, snd_ctl_elem_info_t *uinfo)
+{
+	unsigned int index;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = imux->num_items;
+	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;
+}
+
+int snd_hda_input_mux_put(struct hda_codec *codec, const struct hda_input_mux *imux,
+			  snd_ctl_elem_value_t *ucontrol, hda_nid_t nid,
+			  unsigned int *cur_val)
+{
+	unsigned int idx;
+
+	idx = ucontrol->value.enumerated.item[0];
+	if (idx >= imux->num_items)
+		idx = imux->num_items - 1;
+	if (*cur_val == idx && ! codec->in_resume)
+		return 0;
+	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
+			    imux->items[idx].index);
+	*cur_val = idx;
+	return 1;
+}
+
+
+/*
+ * Multi-channel / digital-out PCM helper functions
+ */
+
+/*
+ * open the digital out in the exclusive mode
+ */
+int snd_hda_multi_out_dig_open(struct hda_codec *codec, struct hda_multi_out *mout)
+{
+	down(&codec->spdif_mutex);
+	if (mout->dig_out_used) {
+		up(&codec->spdif_mutex);
+		return -EBUSY; /* already being used */
+	}
+	mout->dig_out_used = HDA_DIG_EXCLUSIVE;
+	up(&codec->spdif_mutex);
+	return 0;
+}
+
+/*
+ * release the digital out
+ */
+int snd_hda_multi_out_dig_close(struct hda_codec *codec, struct hda_multi_out *mout)
+{
+	down(&codec->spdif_mutex);
+	mout->dig_out_used = 0;
+	up(&codec->spdif_mutex);
+	return 0;
+}
+
+/*
+ * set up more restrictions for analog out
+ */
+int snd_hda_multi_out_analog_open(struct hda_codec *codec, struct hda_multi_out *mout,
+				  snd_pcm_substream_t *substream)
+{
+	substream->runtime->hw.channels_max = mout->max_channels;
+	return snd_pcm_hw_constraint_step(substream->runtime, 0,
+					  SNDRV_PCM_HW_PARAM_CHANNELS, 2);
+}
+
+/*
+ * 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,
+				     snd_pcm_substream_t *substream)
+{
+	hda_nid_t *nids = mout->dac_nids;
+	int chs = substream->runtime->channels;
+	int i;
+
+	down(&codec->spdif_mutex);
+	if (mout->dig_out_nid && 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 digital receiver */
+			snd_hda_codec_setup_stream(codec, mout->dig_out_nid,
+						   stream_tag, 0, format);
+		} else {
+			mout->dig_out_used = 0;
+			snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
+		}
+	}
+	up(&codec->spdif_mutex);
+
+	/* front */
+	snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag, 0, format);
+	if (mout->hp_nid)
+		/* headphone out will just decode front left/right (stereo) */
+		snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag, 0, format);
+	/* surrounds */
+	for (i = 1; i < mout->num_dacs; i++) {
+		if (i == HDA_REAR && chs == 2) /* copy front to rear */
+			snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 0, format);
+		else if (chs >= (i + 1) * 2) /* independent out */
+			snd_hda_codec_setup_stream(codec, nids[i], stream_tag, i * 2,
+						   format);
+	}
+	return 0;
+}
+
+/*
+ * 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_setup_stream(codec, nids[i], 0, 0, 0);
+	if (mout->hp_nid)
+		snd_hda_codec_setup_stream(codec, mout->hp_nid, 0, 0, 0);
+	down(&codec->spdif_mutex);
+	if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
+		snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
+		mout->dig_out_used = 0;
+	}
+	up(&codec->spdif_mutex);
+	return 0;
+}
+
+#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 list_head *p;
+
+	/* FIXME: should handle power widget capabilities */
+	list_for_each(p, &bus->codec_list) {
+		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
+		if (codec->patch_ops.suspend)
+			codec->patch_ops.suspend(codec, state);
+	}
+	return 0;
+}
+
+/**
+ * snd_hda_resume - resume the codecs
+ * @bus: the HDA bus
+ * @state: resume state
+ *
+ * Returns 0 if successful.
+ */
+int snd_hda_resume(struct hda_bus *bus)
+{
+	struct list_head *p;
+
+	list_for_each(p, &bus->codec_list) {
+		struct hda_codec *codec = list_entry(p, struct hda_codec, list);
+		if (codec->patch_ops.resume)
+			codec->patch_ops.resume(codec);
+	}
+	return 0;
+}
+
+/**
+ * snd_hda_resume_ctls - resume controls in the new control list
+ * @codec: the HDA codec
+ * @knew: the array of snd_kcontrol_new_t
+ *
+ * This function resumes the mixer controls in the snd_kcontrol_new_t array,
+ * originally for snd_hda_add_new_ctls().
+ * The array must be terminated with an empty entry as terminator.
+ */
+int snd_hda_resume_ctls(struct hda_codec *codec, snd_kcontrol_new_t *knew)
+{
+	snd_ctl_elem_value_t *val;
+
+	val = kmalloc(sizeof(*val), GFP_KERNEL);
+	if (! val)
+		return -ENOMEM;
+	codec->in_resume = 1;
+	for (; knew->name; knew++) {
+		int i, count;
+		count = knew->count ? knew->count : 1;
+		for (i = 0; i < count; i++) {
+			memset(val, 0, sizeof(*val));
+			val->id.iface = knew->iface;
+			val->id.device = knew->device;
+			val->id.subdevice = knew->subdevice;
+			strcpy(val->id.name, knew->name);
+			val->id.index = knew->index ? knew->index : i;
+			/* Assume that get callback reads only from cache,
+			 * not accessing to the real hardware
+			 */
+			if (snd_ctl_elem_read(codec->bus->card, val) < 0)
+				continue;
+			snd_ctl_elem_write(codec->bus->card, NULL, val);
+		}
+	}
+	codec->in_resume = 0;
+	kfree(val);
+	return 0;
+}
+
+/**
+ * snd_hda_resume_spdif_out - resume the digital out
+ * @codec: the HDA codec
+ */
+int snd_hda_resume_spdif_out(struct hda_codec *codec)
+{
+	return snd_hda_resume_ctls(codec, dig_mixes);
+}
+
+/**
+ * snd_hda_resume_spdif_in - resume the digital in
+ * @codec: the HDA codec
+ */
+int snd_hda_resume_spdif_in(struct hda_codec *codec)
+{
+	return snd_hda_resume_ctls(codec, dig_in_ctls);
+}
+#endif
+
+/*
+ * symbols exported for controller modules
+ */
+EXPORT_SYMBOL(snd_hda_codec_read);
+EXPORT_SYMBOL(snd_hda_codec_write);
+EXPORT_SYMBOL(snd_hda_sequence_write);
+EXPORT_SYMBOL(snd_hda_get_sub_nodes);
+EXPORT_SYMBOL(snd_hda_queue_unsol_event);
+EXPORT_SYMBOL(snd_hda_bus_new);
+EXPORT_SYMBOL(snd_hda_codec_new);
+EXPORT_SYMBOL(snd_hda_codec_setup_stream);
+EXPORT_SYMBOL(snd_hda_calc_stream_format);
+EXPORT_SYMBOL(snd_hda_build_pcms);
+EXPORT_SYMBOL(snd_hda_build_controls);
+#ifdef CONFIG_PM
+EXPORT_SYMBOL(snd_hda_suspend);
+EXPORT_SYMBOL(snd_hda_resume);
+#endif
+
+/*
+ *  INIT part
+ */
+
+static int __init alsa_hda_init(void)
+{
+	return 0;
+}
+
+static void __exit alsa_hda_exit(void)
+{
+}
+
+module_init(alsa_hda_init)
+module_exit(alsa_hda_exit)