blob: 55108b5fb2919c597177d9dc5f28b56cb34d28a2 [file] [log] [blame]
/*
* 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/mm.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <sound/core.h>
#include "hda_codec.h"
#include <sound/asoundef.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include <sound/jack.h>
#include "hda_local.h"
#include "hda_beep.h"
#include "hda_jack.h"
#include <sound/hda_hwdep.h>
#define CREATE_TRACE_POINTS
#include "hda_trace.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" },
{ 0x1013, "Cirrus Logic" },
{ 0x1057, "Motorola" },
{ 0x1095, "Silicon Image" },
{ 0x10de, "Nvidia" },
{ 0x10ec, "Realtek" },
{ 0x1102, "Creative" },
{ 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_PM
#define codec_in_pm(codec) ((codec)->in_pm)
static void hda_power_work(struct work_struct *work);
static void hda_keep_power_on(struct hda_codec *codec);
#define hda_codec_is_power_on(codec) ((codec)->power_on)
static inline void hda_call_pm_notify(struct hda_bus *bus, bool power_up)
{
if (bus->ops.pm_notify)
bus->ops.pm_notify(bus, power_up);
}
#else
#define codec_in_pm(codec) 0
static inline void hda_keep_power_on(struct hda_codec *codec) {}
#define hda_codec_is_power_on(codec) 1
#define hda_call_pm_notify(bus, state) {}
#endif
/**
* snd_hda_get_jack_location - Give a location string of the jack
* @cfg: pin default config value
*
* Parse the pin default config value and returns the string of the
* jack location, e.g. "Rear", "Front", etc.
*/
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);
/**
* snd_hda_get_jack_connectivity - Give a connectivity string of the jack
* @cfg: pin default config value
*
* Parse the pin default config value and returns the string of the
* jack connectivity, i.e. external or internal connection.
*/
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);
/**
* snd_hda_get_jack_type - Give a type string of the jack
* @cfg: pin default config value
*
* Parse the pin default config value and returns the string of the
* jack type, i.e. the purpose of the jack, such as Line-Out or CD.
*/
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", "Digital 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;
if ((codec->addr & ~0xf) || (direct & ~1) || (nid & ~0x7f) ||
(verb & ~0xfff) || (parm & ~0xffff)) {
printk(KERN_ERR "hda-codec: out of range cmd %x:%x:%x:%x:%x\n",
codec->addr, direct, nid, verb, parm);
return ~0;
}
val = (u32)codec->addr << 28;
val |= (u32)direct << 27;
val |= (u32)nid << 20;
val |= verb << 8;
val |= parm;
return val;
}
/*
* Send and receive a verb
*/
static int codec_exec_verb(struct hda_codec *codec, unsigned int cmd,
unsigned int *res)
{
struct hda_bus *bus = codec->bus;
int err;
if (cmd == ~0)
return -1;
if (res)
*res = -1;
again:
snd_hda_power_up(codec);
mutex_lock(&bus->cmd_mutex);
for (;;) {
trace_hda_send_cmd(codec, cmd);
err = bus->ops.command(bus, cmd);
if (err != -EAGAIN)
break;
/* process pending verbs */
bus->ops.get_response(bus, codec->addr);
}
if (!err && res) {
*res = bus->ops.get_response(bus, codec->addr);
trace_hda_get_response(codec, *res);
}
mutex_unlock(&bus->cmd_mutex);
snd_hda_power_down(codec);
if (!codec_in_pm(codec) && res && *res == -1 && bus->rirb_error) {
if (bus->response_reset) {
snd_printd("hda_codec: resetting BUS due to "
"fatal communication error\n");
trace_hda_bus_reset(bus);
bus->ops.bus_reset(bus);
}
goto again;
}
/* clear reset-flag when the communication gets recovered */
if (!err || codec_in_pm(codec))
bus->response_reset = 0;
return err;
}
/**
* 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 cmd = make_codec_cmd(codec, nid, direct, verb, parm);
unsigned int res;
if (codec_exec_verb(codec, cmd, &res))
return -1;
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)
{
unsigned int cmd = make_codec_cmd(codec, nid, direct, verb, parm);
unsigned int res;
return codec_exec_verb(codec, cmd,
codec->bus->sync_write ? &res : NULL);
}
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);
/* connection list element */
struct hda_conn_list {
struct list_head list;
int len;
hda_nid_t nid;
hda_nid_t conns[0];
};
/* look up the cached results */
static struct hda_conn_list *
lookup_conn_list(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_conn_list *p;
list_for_each_entry(p, &codec->conn_list, list) {
if (p->nid == nid)
return p;
}
return NULL;
}
static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
const hda_nid_t *list)
{
struct hda_conn_list *p;
p = kmalloc(sizeof(*p) + len * sizeof(hda_nid_t), GFP_KERNEL);
if (!p)
return -ENOMEM;
p->len = len;
p->nid = nid;
memcpy(p->conns, list, len * sizeof(hda_nid_t));
list_add(&p->list, &codec->conn_list);
return 0;
}
static void remove_conn_list(struct hda_codec *codec)
{
while (!list_empty(&codec->conn_list)) {
struct hda_conn_list *p;
p = list_first_entry(&codec->conn_list, typeof(*p), list);
list_del(&p->list);
kfree(p);
}
}
/* read the connection and add to the cache */
static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid)
{
hda_nid_t list[32];
hda_nid_t *result = list;
int len;
len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list));
if (len == -ENOSPC) {
len = snd_hda_get_num_raw_conns(codec, nid);
result = kmalloc(sizeof(hda_nid_t) * len, GFP_KERNEL);
if (!result)
return -ENOMEM;
len = snd_hda_get_raw_connections(codec, nid, result, len);
}
if (len >= 0)
len = snd_hda_override_conn_list(codec, nid, len, result);
if (result != list)
kfree(result);
return len;
}
/**
* snd_hda_get_conn_list - get connection list
* @codec: the HDA codec
* @nid: NID to parse
* @len: number of connection list entries
* @listp: the pointer to store NID list
*
* Parses the connection list of the given widget and stores the pointer
* to the list of NIDs.
*
* Returns the number of connections, or a negative error code.
*
* Note that the returned pointer isn't protected against the list
* modification. If snd_hda_override_conn_list() might be called
* concurrently, protect with a mutex appropriately.
*/
int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid,
const hda_nid_t **listp)
{
bool added = false;
for (;;) {
int err;
const struct hda_conn_list *p;
/* if the connection-list is already cached, read it */
p = lookup_conn_list(codec, nid);
if (p) {
if (listp)
*listp = p->conns;
return p->len;
}
if (snd_BUG_ON(added))
return -EINVAL;
err = read_and_add_raw_conns(codec, nid);
if (err < 0)
return err;
added = true;
}
}
EXPORT_SYMBOL_HDA(snd_hda_get_conn_list);
/**
* snd_hda_get_connections - copy connection list
* @codec: the HDA codec
* @nid: NID to parse
* @conn_list: connection list array; when NULL, checks only the size
* @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)
{
const hda_nid_t *list;
int len = snd_hda_get_conn_list(codec, nid, &list);
if (len > 0 && conn_list) {
if (len > max_conns) {
snd_printk(KERN_ERR "hda_codec: "
"Too many connections %d for NID 0x%x\n",
len, nid);
return -EINVAL;
}
memcpy(conn_list, list, len * sizeof(hda_nid_t));
}
return len;
}
EXPORT_SYMBOL_HDA(snd_hda_get_connections);
/* return CONNLIST_LEN parameter of the given widget */
static unsigned int get_num_conns(struct hda_codec *codec, hda_nid_t nid)
{
unsigned int wcaps = get_wcaps(codec, nid);
unsigned int parm;
if (!(wcaps & AC_WCAP_CONN_LIST) &&
get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
return 0;
parm = snd_hda_param_read(codec, nid, AC_PAR_CONNLIST_LEN);
if (parm == -1)
parm = 0;
return parm;
}
int snd_hda_get_num_raw_conns(struct hda_codec *codec, hda_nid_t nid)
{
return snd_hda_get_raw_connections(codec, nid, NULL, 0);
}
/**
* snd_hda_get_raw_connections - copy connection list without cache
* @codec: the HDA codec
* @nid: NID to parse
* @conn_list: connection list array
* @max_conns: max. number of connections to store
*
* Like snd_hda_get_connections(), copy the connection list but without
* checking through the connection-list cache.
* Currently called only from hda_proc.c, so not exported.
*/
int snd_hda_get_raw_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;
int null_count = 0;
parm = get_num_conns(codec, nid);
if (!parm)
return 0;
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);
if (parm == -1 && codec->bus->rirb_error)
return -EIO;
if (conn_list)
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);
if (parm == -1 && codec->bus->rirb_error)
return -EIO;
}
range_val = !!(parm & (1 << (shift-1))); /* ranges */
val = parm & mask;
if (val == 0 && null_count++) { /* no second chance */
snd_printk(KERN_WARNING "hda_codec: "
"invalid CONNECT_LIST verb %x[%i]:%x\n",
nid, i, parm);
return 0;
}
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 (conn_list) {
if (conns >= max_conns)
return -ENOSPC;
conn_list[conns] = n;
}
conns++;
}
} else {
if (conn_list) {
if (conns >= max_conns)
return -ENOSPC;
conn_list[conns] = val;
}
conns++;
}
prev_nid = val;
}
return conns;
}
/**
* snd_hda_override_conn_list - add/modify the connection-list to cache
* @codec: the HDA codec
* @nid: NID to parse
* @len: number of connection list entries
* @list: the list of connection entries
*
* Add or modify the given connection-list to the cache. If the corresponding
* cache already exists, invalidate it and append a new one.
*
* Returns zero or a negative error code.
*/
int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
const hda_nid_t *list)
{
struct hda_conn_list *p;
p = lookup_conn_list(codec, nid);
if (p) {
list_del(&p->list);
kfree(p);
}
return add_conn_list(codec, nid, len, list);
}
EXPORT_SYMBOL_HDA(snd_hda_override_conn_list);
/**
* snd_hda_get_conn_index - get the connection index of the given NID
* @codec: the HDA codec
* @mux: NID containing the list
* @nid: NID to select
* @recursive: 1 when searching NID recursively, otherwise 0
*
* Parses the connection list of the widget @mux and checks whether the
* widget @nid is present. If it is, return the connection index.
* Otherwise it returns -1.
*/
int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
hda_nid_t nid, int recursive)
{
const hda_nid_t *conn;
int i, nums;
nums = snd_hda_get_conn_list(codec, mux, &conn);
for (i = 0; i < nums; i++)
if (conn[i] == nid)
return i;
if (!recursive)
return -1;
if (recursive > 10) {
snd_printd("hda_codec: too deep connection for 0x%x\n", nid);
return -1;
}
recursive++;
for (i = 0; i < nums; i++) {
unsigned int type = get_wcaps_type(get_wcaps(codec, conn[i]));
if (type == AC_WID_PIN || type == AC_WID_AUD_OUT)
continue;
if (snd_hda_get_conn_index(codec, conn[i], nid, recursive) >= 0)
return i;
}
return -1;
}
EXPORT_SYMBOL_HDA(snd_hda_get_conn_index);
/**
* 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 (!bus || !bus->workq)
return 0;
trace_hda_unsol_event(bus, res, res_ex);
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);
snd_hda_hwdep_add_power_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 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);
mutex_init(&bus->prepare_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;
unsigned 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];
if (codec->vendor_name)
goto get_chip_name;
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;
}
codec->vendor_name = kstrdup(vendor, GFP_KERNEL);
if (!codec->vendor_name)
return -ENOMEM;
get_chip_name:
if (codec->chip_name)
return 0;
if (codec->preset && codec->preset->name)
codec->chip_name = kstrdup(codec->preset->name, GFP_KERNEL);
else {
sprintf(tmp, "ID %x", codec->vendor_id & 0xffff);
codec->chip_name = kstrdup(tmp, GFP_KERNEL);
}
if (!codec->chip_name)
return -ENOMEM;
return 0;
}
/*
* look for an AFG and MFG nodes
*/
static void 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);
switch (function_id & 0xff) {
case AC_GRP_AUDIO_FUNCTION:
codec->afg = nid;
codec->afg_function_id = function_id & 0xff;
codec->afg_unsol = (function_id >> 8) & 1;
break;
case AC_GRP_MODEM_FUNCTION:
codec->mfg = nid;
codec->mfg_function_id = function_id & 0xff;
codec->mfg_unsol = (function_id >> 8) & 1;
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 = get_wcaps_type(wcaps);
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);
pin->ctrl = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL,
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;
}
/* 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;
/* the check below may be invalid when pins are added by a fixup
* dynamically (e.g. via snd_hda_codec_update_widgets()), so disabled
* for now
*/
/*
if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)
return -EINVAL;
*/
pin = look_up_pincfg(codec, list, nid);
if (!pin) {
pin = snd_array_new(list);
if (!pin)
return -ENOMEM;
pin->nid = nid;
}
pin->cfg = cfg;
return 0;
}
/**
* snd_hda_codec_set_pincfg - Override a pin default configuration
* @codec: the HDA codec
* @nid: NID to set the pin config
* @cfg: the pin default config value
*
* Override a pin default configuration value in the cache.
* This value can be read by snd_hda_codec_get_pincfg() in a higher
* priority than the real hardware value.
*/
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);
/**
* snd_hda_codec_get_pincfg - Obtain a pin-default configuration
* @codec: the HDA codec
* @nid: NID to get the pin config
*
* Get the current pin config value of the given pin NID.
* If the pincfg value is cached or overridden via sysfs or driver,
* returns the cached value.
*/
unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_pincfg *pin;
#ifdef CONFIG_SND_HDA_HWDEP
{
unsigned int cfg = 0;
mutex_lock(&codec->user_mutex);
pin = look_up_pincfg(codec, &codec->user_pins, nid);
if (pin)
cfg = pin->cfg;
mutex_unlock(&codec->user_mutex);
if (cfg)
return 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);
/* remember the current pinctl target value */
int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
unsigned int val)
{
struct hda_pincfg *pin;
pin = look_up_pincfg(codec, &codec->init_pins, nid);
if (!pin)
return -EINVAL;
pin->target = val;
return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_set_pin_target);
/* return the current pinctl target value */
int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_pincfg *pin;
pin = look_up_pincfg(codec, &codec->init_pins, nid);
if (!pin)
return 0;
return pin->target;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_get_pin_target);
/**
* snd_hda_shutup_pins - Shut up all pins
* @codec: the HDA codec
*
* Clear all pin controls to shup up before suspend for avoiding click noise.
* The controls aren't cached so that they can be resumed properly.
*/
void snd_hda_shutup_pins(struct hda_codec *codec)
{
int i;
/* don't shut up pins when unloading the driver; otherwise it breaks
* the default pin setup at the next load of the driver
*/
if (codec->bus->shutdown)
return;
for (i = 0; i < codec->init_pins.used; i++) {
struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
/* use read here for syncing after issuing each verb */
snd_hda_codec_read(codec, pin->nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
}
codec->pins_shutup = 1;
}
EXPORT_SYMBOL_HDA(snd_hda_shutup_pins);
#ifdef CONFIG_PM
/* Restore the pin controls cleared previously via snd_hda_shutup_pins() */
static void restore_shutup_pins(struct hda_codec *codec)
{
int i;
if (!codec->pins_shutup)
return;
if (codec->bus->shutdown)
return;
for (i = 0; i < codec->init_pins.used; i++) {
struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
snd_hda_codec_write(codec, pin->nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
pin->ctrl);
}
codec->pins_shutup = 0;
}
#endif
static void hda_jackpoll_work(struct work_struct *work)
{
struct hda_codec *codec =
container_of(work, struct hda_codec, jackpoll_work.work);
if (!codec->jackpoll_interval)
return;
snd_hda_jack_set_dirty_all(codec);
snd_hda_jack_poll_all(codec);
queue_delayed_work(codec->bus->workq, &codec->jackpoll_work,
codec->jackpoll_interval);
}
static void init_hda_cache(struct hda_cache_rec *cache,
unsigned int record_size);
static void free_hda_cache(struct hda_cache_rec *cache);
/* release all pincfg lists */
static void free_init_pincfgs(struct hda_codec *codec)
{
snd_array_free(&codec->driver_pins);
#ifdef CONFIG_SND_HDA_HWDEP
snd_array_free(&codec->user_pins);
#endif
snd_array_free(&codec->init_pins);
}
/*
* audio-converter setup caches
*/
struct hda_cvt_setup {
hda_nid_t nid;
u8 stream_tag;
u8 channel_id;
u16 format_id;
unsigned char active; /* cvt is currently used */
unsigned char dirty; /* setups should be cleared */
};
/* get or create a cache entry for the given audio converter NID */
static struct hda_cvt_setup *
get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid)
{
struct hda_cvt_setup *p;
int i;
for (i = 0; i < codec->cvt_setups.used; i++) {
p = snd_array_elem(&codec->cvt_setups, i);
if (p->nid == nid)
return p;
}
p = snd_array_new(&codec->cvt_setups);
if (p)
p->nid = nid;
return p;
}
/*
* codec destructor
*/
static void snd_hda_codec_free(struct hda_codec *codec)
{
if (!codec)
return;
cancel_delayed_work_sync(&codec->jackpoll_work);
snd_hda_jack_tbl_clear(codec);
free_init_pincfgs(codec);
#ifdef CONFIG_PM
cancel_delayed_work(&codec->power_work);
flush_workqueue(codec->bus->workq);
#endif
list_del(&codec->list);
snd_array_free(&codec->mixers);
snd_array_free(&codec->nids);
snd_array_free(&codec->cvt_setups);
snd_array_free(&codec->spdif_out);
remove_conn_list(codec);
codec->bus->caddr_tbl[codec->addr] = NULL;
if (codec->patch_ops.free)
codec->patch_ops.free(codec);
#ifdef CONFIG_PM
if (!codec->pm_down_notified) /* cancel leftover refcounts */
hda_call_pm_notify(codec->bus, false);
#endif
module_put(codec->owner);
free_hda_cache(&codec->amp_cache);
free_hda_cache(&codec->cmd_cache);
kfree(codec->vendor_name);
kfree(codec->chip_name);
kfree(codec->modelname);
kfree(codec->wcaps);
kfree(codec);
}
static bool snd_hda_codec_get_supported_ps(struct hda_codec *codec,
hda_nid_t fg, unsigned int power_state);
static unsigned int hda_set_power_state(struct hda_codec *codec,
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 snd_hda_codec_new(struct hda_bus *bus,
unsigned int codec_addr,
struct hda_codec **codecp)
{
struct hda_codec *codec;
char component[31];
hda_nid_t fg;
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);
mutex_init(&codec->hash_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 hda_nid_item), 32);
snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32);
snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16);
snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8);
snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16);
snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16);
snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8);
INIT_LIST_HEAD(&codec->conn_list);
INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
#ifdef CONFIG_PM
spin_lock_init(&codec->power_lock);
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);
hda_call_pm_notify(bus, true);
#endif
if (codec->bus->modelname) {
codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
if (!codec->modelname) {
snd_hda_codec_free(codec);
return -ENODEV;
}
}
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;
}
fg = codec->afg ? codec->afg : codec->mfg;
err = read_widget_caps(codec, fg);
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) {
codec->subsystem_id =
snd_hda_codec_read(codec, fg, 0,
AC_VERB_GET_SUBSYSTEM_ID, 0);
}
#ifdef CONFIG_PM
codec->d3_stop_clk = snd_hda_codec_get_supported_ps(codec, fg,
AC_PWRST_CLKSTOP);
if (!codec->d3_stop_clk)
bus->power_keep_link_on = 1;
#endif
codec->epss = snd_hda_codec_get_supported_ps(codec, fg,
AC_PWRST_EPSS);
/* power-up all before initialization */
hda_set_power_state(codec, AC_PWRST_D0);
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_update_widgets(struct hda_codec *codec)
{
hda_nid_t fg;
int err;
/* Assume the function group node does not change,
* only the widget nodes may change.
*/
kfree(codec->wcaps);
fg = codec->afg ? codec->afg : codec->mfg;
err = read_widget_caps(codec, fg);
if (err < 0) {
snd_printk(KERN_ERR "hda_codec: cannot malloc\n");
return err;
}
snd_array_free(&codec->init_pins);
err = read_pin_defaults(codec);
return err;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_update_widgets);
/**
* snd_hda_codec_configure - (Re-)configure the HD-audio codec
* @codec: the HDA codec
*
* Start parsing of the given codec tree and (re-)initialize the whole
* patch instance.
*
* Returns 0 if successful or a negative error code.
*/
int snd_hda_codec_configure(struct hda_codec *codec)
{
int err;
codec->preset = find_codec_preset(codec);
if (!codec->vendor_name || !codec->chip_name) {
err = get_codec_name(codec);
if (err < 0)
return err;
}
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);
/* audio codec should override the mixer name */
if (!err && (codec->afg || !*codec->bus->card->mixername))
snprintf(codec->bus->card->mixername,
sizeof(codec->bus->card->mixername),
"%s %s", codec->vendor_name, codec->chip_name);
return err;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_configure);
/* update the stream-id if changed */
static void update_pcm_stream_id(struct hda_codec *codec,
struct hda_cvt_setup *p, hda_nid_t nid,
u32 stream_tag, int channel_id)
{
unsigned int oldval, newval;
if (p->stream_tag != stream_tag || p->channel_id != channel_id) {
oldval = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
newval = (stream_tag << 4) | channel_id;
if (oldval != newval)
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_CHANNEL_STREAMID,
newval);
p->stream_tag = stream_tag;
p->channel_id = channel_id;
}
}
/* update the format-id if changed */
static void update_pcm_format(struct hda_codec *codec, struct hda_cvt_setup *p,
hda_nid_t nid, int format)
{
unsigned int oldval;
if (p->format_id != format) {
oldval = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_STREAM_FORMAT, 0);
if (oldval != format) {
msleep(1);
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_STREAM_FORMAT,
format);
}
p->format_id = format;
}
}
/**
* 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)
{
struct hda_codec *c;
struct hda_cvt_setup *p;
int type;
int i;
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);
p = get_hda_cvt_setup(codec, nid);
if (!p)
return;
if (codec->pcm_format_first)
update_pcm_format(codec, p, nid, format);
update_pcm_stream_id(codec, p, nid, stream_tag, channel_id);
if (!codec->pcm_format_first)
update_pcm_format(codec, p, nid, format);
p->active = 1;
p->dirty = 0;
/* make other inactive cvts with the same stream-tag dirty */
type = get_wcaps_type(get_wcaps(codec, nid));
list_for_each_entry(c, &codec->bus->codec_list, list) {
for (i = 0; i < c->cvt_setups.used; i++) {
p = snd_array_elem(&c->cvt_setups, i);
if (!p->active && p->stream_tag == stream_tag &&
get_wcaps_type(get_wcaps(c, p->nid)) == type)
p->dirty = 1;
}
}
}
EXPORT_SYMBOL_HDA(snd_hda_codec_setup_stream);
static void really_cleanup_stream(struct hda_codec *codec,
struct hda_cvt_setup *q);
/**
* __snd_hda_codec_cleanup_stream - clean up the codec for closing
* @codec: the CODEC to clean up
* @nid: the NID to clean up
* @do_now: really clean up the stream instead of clearing the active flag
*/
void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid,
int do_now)
{
struct hda_cvt_setup *p;
if (!nid)
return;
if (codec->no_sticky_stream)
do_now = 1;
snd_printdd("hda_codec_cleanup_stream: NID=0x%x\n", nid);
p = get_hda_cvt_setup(codec, nid);
if (p) {
/* here we just clear the active flag when do_now isn't set;
* actual clean-ups will be done later in
* purify_inactive_streams() called from snd_hda_codec_prpapre()
*/
if (do_now)
really_cleanup_stream(codec, p);
else
p->active = 0;
}
}
EXPORT_SYMBOL_HDA(__snd_hda_codec_cleanup_stream);
static void really_cleanup_stream(struct hda_codec *codec,
struct hda_cvt_setup *q)
{
hda_nid_t nid = q->nid;
if (q->stream_tag || q->channel_id)
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0);
if (q->format_id)
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0
);
memset(q, 0, sizeof(*q));
q->nid = nid;
}
/* clean up the all conflicting obsolete streams */
static void purify_inactive_streams(struct hda_codec *codec)
{
struct hda_codec *c;
int i;
list_for_each_entry(c, &codec->bus->codec_list, list) {
for (i = 0; i < c->cvt_setups.used; i++) {
struct hda_cvt_setup *p;
p = snd_array_elem(&c->cvt_setups, i);
if (p->dirty)
really_cleanup_stream(c, p);
}
}
}
#ifdef CONFIG_PM
/* clean up all streams; called from suspend */
static void hda_cleanup_all_streams(struct hda_codec *codec)
{
int i;
for (i = 0; i < codec->cvt_setups.used; i++) {
struct hda_cvt_setup *p = snd_array_elem(&codec->cvt_setups, i);
if (p->stream_tag)
really_cleanup_stream(codec, p);
}
}
#endif
/*
* 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 HDA_HASH_PARPCM_KEY(nid) (u32)((nid) + (0x03 << 24))
#define HDA_HASH_PARSTR_KEY(nid) (u32)((nid) + (0x04 << 24))
#define INFO_AMP_CAPS (1<<0)
#define INFO_AMP_VOL(ch) (1 << (1 + (ch)))
/* initialize the hash table */
static void 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_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;
}
return NULL;
}
/* query the hash. allocate an entry if not found. */
static struct hda_cache_head *get_alloc_hash(struct hda_cache_rec *cache,
u32 key)
{
struct hda_cache_head *info = get_hash(cache, key);
if (!info) {
u16 idx, cur;
/* 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->dirty = 0;
idx = key % (u16)ARRAY_SIZE(cache->hash);
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);
}
/* overwrite the value with the key in the caps hash */
static int write_caps_hash(struct hda_codec *codec, u32 key, unsigned int val)
{
struct hda_amp_info *info;
mutex_lock(&codec->hash_mutex);
info = get_alloc_amp_hash(codec, key);
if (!info) {
mutex_unlock(&codec->hash_mutex);
return -EINVAL;
}
info->amp_caps = val;
info->head.val |= INFO_AMP_CAPS;
mutex_unlock(&codec->hash_mutex);
return 0;
}
/* query the value from the caps hash; if not found, fetch the current
* value from the given function and store in the hash
*/
static unsigned int
query_caps_hash(struct hda_codec *codec, hda_nid_t nid, int dir, u32 key,
unsigned int (*func)(struct hda_codec *, hda_nid_t, int))
{
struct hda_amp_info *info;
unsigned int val;
mutex_lock(&codec->hash_mutex);
info = get_alloc_amp_hash(codec, key);
if (!info) {
mutex_unlock(&codec->hash_mutex);
return 0;
}
if (!(info->head.val & INFO_AMP_CAPS)) {
mutex_unlock(&codec->hash_mutex); /* for reentrance */
val = func(codec, nid, dir);
write_caps_hash(codec, key, val);
} else {
val = info->amp_caps;
mutex_unlock(&codec->hash_mutex);
}
return val;
}
static unsigned int read_amp_cap(struct hda_codec *codec, hda_nid_t nid,
int direction)
{
if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
nid = codec->afg;
return snd_hda_param_read(codec, nid,
direction == HDA_OUTPUT ?
AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
}
/**
* query_amp_caps - query AMP capabilities
* @codec: the HD-auio codec
* @nid: the NID to query
* @direction: either #HDA_INPUT or #HDA_OUTPUT
*
* Query AMP capabilities for the given widget and direction.
* Returns the obtained capability bits.
*
* When cap bits have been already read, this doesn't read again but
* returns the cached value.
*/
u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
{
return query_caps_hash(codec, nid, direction,
HDA_HASH_KEY(nid, direction, 0),
read_amp_cap);
}
EXPORT_SYMBOL_HDA(query_amp_caps);
/**
* snd_hda_override_amp_caps - Override the AMP capabilities
* @codec: the CODEC to clean up
* @nid: the NID to clean up
* @direction: either #HDA_INPUT or #HDA_OUTPUT
* @caps: the capability bits to set
*
* Override the cached AMP caps bits value by the given one.
* This function is useful if the driver needs to adjust the AMP ranges,
* e.g. limit to 0dB, etc.
*
* Returns zero if successful or a negative error code.
*/
int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
unsigned int caps)
{
return write_caps_hash(codec, HDA_HASH_KEY(nid, dir, 0), caps);
}
EXPORT_SYMBOL_HDA(snd_hda_override_amp_caps);
static unsigned int read_pin_cap(struct hda_codec *codec, hda_nid_t nid,
int dir)
{
return snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
}
/**
* snd_hda_query_pin_caps - Query PIN capabilities
* @codec: the HD-auio codec
* @nid: the NID to query
*
* Query PIN capabilities for the given widget.
* Returns the obtained capability bits.
*
* When cap bits have been already read, this doesn't read again but
* returns the cached value.
*/
u32 snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid)
{
return query_caps_hash(codec, nid, 0, HDA_HASH_PINCAP_KEY(nid),
read_pin_cap);
}
EXPORT_SYMBOL_HDA(snd_hda_query_pin_caps);
/**
* snd_hda_override_pin_caps - Override the pin capabilities
* @codec: the CODEC
* @nid: the NID to override
* @caps: the capability bits to set
*
* Override the cached PIN capabilitiy bits value by the given one.
*
* Returns zero if successful or a negative error code.
*/
int snd_hda_override_pin_caps(struct hda_codec *codec, hda_nid_t nid,
unsigned int caps)
{
return write_caps_hash(codec, HDA_HASH_PINCAP_KEY(nid), caps);
}
EXPORT_SYMBOL_HDA(snd_hda_override_pin_caps);
/* read or sync the hash value with the current value;
* call within hash_mutex
*/
static struct hda_amp_info *
update_amp_hash(struct hda_codec *codec, hda_nid_t nid, int ch,
int direction, int index, bool init_only)
{
struct hda_amp_info *info;
unsigned int parm, val = 0;
bool val_read = false;
retry:
info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
if (!info)
return NULL;
if (!(info->head.val & INFO_AMP_VOL(ch))) {
if (!val_read) {
mutex_unlock(&codec->hash_mutex);
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);
val &= 0xff;
val_read = true;
mutex_lock(&codec->hash_mutex);
goto retry;
}
info->vol[ch] = val;
info->head.val |= INFO_AMP_VOL(ch);
} else if (init_only)
return NULL;
return info;
}
/*
* write the current volume in info to the h/w
*/
static void put_vol_mute(struct hda_codec *codec, unsigned int amp_caps,
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;
if ((val & HDA_AMP_MUTE) && !(amp_caps & AC_AMPCAP_MUTE) &&
(amp_caps & AC_AMPCAP_MIN_MUTE))
; /* set the zero value as a fake mute */
else
parm |= val;
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, parm);
}
/**
* snd_hda_codec_amp_read - Read AMP value
* @codec: HD-audio codec
* @nid: NID to read the AMP value
* @ch: channel (left=0 or right=1)
* @direction: #HDA_INPUT or #HDA_OUTPUT
* @index: the index value (only for input direction)
*
* 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;
unsigned int val = 0;
mutex_lock(&codec->hash_mutex);
info = update_amp_hash(codec, nid, ch, direction, index, false);
if (info)
val = info->vol[ch];
mutex_unlock(&codec->hash_mutex);
return val;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_amp_read);
static int codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
int direction, int idx, int mask, int val,
bool init_only)
{
struct hda_amp_info *info;
unsigned int caps;
unsigned int cache_only;
if (snd_BUG_ON(mask & ~0xff))
mask &= 0xff;
val &= mask;
mutex_lock(&codec->hash_mutex);
info = update_amp_hash(codec, nid, ch, direction, idx, init_only);
if (!info) {
mutex_unlock(&codec->hash_mutex);
return 0;
}
val |= info->vol[ch] & ~mask;
if (info->vol[ch] == val) {
mutex_unlock(&codec->hash_mutex);
return 0;
}
info->vol[ch] = val;
cache_only = info->head.dirty = codec->cached_write;
caps = info->amp_caps;
mutex_unlock(&codec->hash_mutex);
if (!cache_only)
put_vol_mute(codec, caps, nid, ch, direction, idx, val);
return 1;
}
/**
* snd_hda_codec_amp_update - update the AMP value
* @codec: HD-audio codec
* @nid: NID to read the AMP value
* @ch: channel (left=0 or right=1)
* @direction: #HDA_INPUT or #HDA_OUTPUT
* @idx: the index value (only for input direction)
* @mask: bit mask to set
* @val: the bits value to set
*
* Update the AMP value with a bit mask.
* Returns 0 if the value is unchanged, 1 if changed.
*/
int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
int direction, int idx, int mask, int val)
{
return codec_amp_update(codec, nid, ch, direction, idx, mask, val, false);
}
EXPORT_SYMBOL_HDA(snd_hda_codec_amp_update);
/**
* snd_hda_codec_amp_stereo - update the AMP stereo values
* @codec: HD-audio codec
* @nid: NID to read the AMP value
* @direction: #HDA_INPUT or #HDA_OUTPUT
* @idx: the index value (only for input direction)
* @mask: bit mask to set
* @val: the bits value to set
*
* Update the AMP values like snd_hda_codec_amp_update(), but for a
* stereo widget 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;
if (snd_BUG_ON(mask & ~0xff))
mask &= 0xff;
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);
/* Works like snd_hda_codec_amp_update() but it writes the value only at
* the first access. If the amp was already initialized / updated beforehand,
* this does nothing.
*/
int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,
int dir, int idx, int mask, int val)
{
return codec_amp_update(codec, nid, ch, dir, idx, mask, val, true);
}
EXPORT_SYMBOL_HDA(snd_hda_codec_amp_init);
int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid,
int dir, int idx, int mask, int val)
{
int ch, ret = 0;
if (snd_BUG_ON(mask & ~0xff))
mask &= 0xff;
for (ch = 0; ch < 2; ch++)
ret |= snd_hda_codec_amp_init(codec, nid, ch, dir,
idx, mask, val);
return ret;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_amp_init_stereo);
/**
* snd_hda_codec_resume_amp - Resume all AMP commands from the cache
* @codec: HD-audio codec
*
* Resume the all amp commands from the cache.
*/
void snd_hda_codec_resume_amp(struct hda_codec *codec)
{
int i;
mutex_lock(&codec->hash_mutex);
codec->cached_write = 0;
for (i = 0; i < codec->amp_cache.buf.used; i++) {
struct hda_amp_info *buffer;
u32 key;
hda_nid_t nid;
unsigned int idx, dir, ch;
struct hda_amp_info info;
buffer = snd_array_elem(&codec->amp_cache.buf, i);
if (!buffer->head.dirty)
continue;
buffer->head.dirty = 0;
info = *buffer;
key = info.head.key;
if (!key)
continue;
nid = key & 0xff;
idx = (key >> 16) & 0xff;
dir = (key >> 24) & 0xff;
for (ch = 0; ch < 2; ch++) {
if (!(info.head.val & INFO_AMP_VOL(ch)))
continue;
mutex_unlock(&codec->hash_mutex);
put_vol_mute(codec, info.amp_caps, nid, ch, dir, idx,
info.vol[ch]);
mutex_lock(&codec->hash_mutex);
}
}
mutex_unlock(&codec->hash_mutex);
}
EXPORT_SYMBOL_HDA(snd_hda_codec_resume_amp);
static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir,
unsigned int ofs)
{
u32 caps = query_amp_caps(codec, nid, dir);
/* get num steps */
caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
if (ofs < caps)
caps -= ofs;
return caps;
}
/**
* snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer
*
* The control element is supposed to have the private_value field
* set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/
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);
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = chs == 3 ? 2 : 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = get_amp_max_value(codec, nid, dir, ofs);
if (!uinfo->value.integer.max) {
printk(KERN_WARNING "hda_codec: "
"num_steps = 0 for NID=0x%x (ctl = %s)\n", nid,
kcontrol->id.name);
return -EINVAL;
}
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)
{
unsigned int maxval;
if (val > 0)
val += ofs;
/* ofs = 0: raw max value */
maxval = get_amp_max_value(codec, nid, dir, 0);
if (val > maxval)
val = maxval;
return snd_hda_codec_amp_update(codec, nid, ch, dir, idx,
HDA_AMP_VOLMASK, val);
}
/**
* snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume
*
* The control element is supposed to have the private_value field
* set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/
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);
/**
* snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume
*
* The control element is supposed to have the private_value field
* set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/
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);
/**
* snd_hda_mixer_amp_volume_put - TLV callback for a standard AMP mixer volume
*
* The control element is supposed to have the private_value field
* set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/
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);
bool min_mute = get_amp_min_mute(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 (min_mute || (caps & AC_AMPCAP_MIN_MUTE))
val2 |= TLV_DB_SCALE_MUTE;
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);
/**
* snd_hda_set_vmaster_tlv - Set TLV for a virtual master control
* @codec: HD-audio codec
* @nid: NID of a reference widget
* @dir: #HDA_INPUT or #HDA_OUTPUT
* @tlv: TLV data to be stored, at least 4 elements
*
* Set (static) TLV data for a virtual master volume using the AMP caps
* obtained from the reference NID.
* The volume range is recalculated as if the max volume is 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 *
find_mixer_ctl(struct hda_codec *codec, const char *name, int dev, int idx)
{
struct snd_ctl_elem_id id;
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
id.device = dev;
id.index = idx;
if (snd_BUG_ON(strlen(name) >= sizeof(id.name)))
return NULL;
strcpy(id.name, name);
return snd_ctl_find_id(codec->bus->card, &id);
}
/**
* snd_hda_find_mixer_ctl - Find a mixer control element with the given name
* @codec: HD-audio codec
* @name: ctl id name string
*
* Get the control element with the given id string and IFACE_MIXER.
*/
struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
const char *name)
{
return find_mixer_ctl(codec, name, 0, 0);
}
EXPORT_SYMBOL_HDA(snd_hda_find_mixer_ctl);
static int find_empty_mixer_ctl_idx(struct hda_codec *codec, const char *name,
int start_idx)
{
int i, idx;
/* 16 ctlrs should be large enough */
for (i = 0, idx = start_idx; i < 16; i++, idx++) {
if (!find_mixer_ctl(codec, name, 0, idx))
return idx;
}
return -EBUSY;
}
/**
* snd_hda_ctl_add - Add a control element and assign to the codec
* @codec: HD-audio codec
* @nid: corresponding NID (optional)
* @kctl: the control element to assign
*
* Add the given control element to an array inside the codec instance.
* All control elements belonging to a codec are supposed to be added
* by this function so that a proper clean-up works at the free or
* reconfiguration time.
*
* If non-zero @nid is passed, the NID is assigned to the control element.
* The assignment is shown in the codec proc file.
*
* snd_hda_ctl_add() checks the control subdev id field whether
* #HDA_SUBDEV_NID_FLAG bit is set. If set (and @nid is zero), the lower
* bits value is taken as the NID to assign. The #HDA_NID_ITEM_AMP bit
* specifies if kctl->private_value is a HDA amplifier value.
*/
int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
struct snd_kcontrol *kctl)
{
int err;
unsigned short flags = 0;
struct hda_nid_item *item;
if (kctl->id.subdevice & HDA_SUBDEV_AMP_FLAG) {
flags |= HDA_NID_ITEM_AMP;
if (nid == 0)
nid = get_amp_nid_(kctl->private_value);
}
if ((kctl->id.subdevice & HDA_SUBDEV_NID_FLAG) != 0 && nid == 0)
nid = kctl->id.subdevice & 0xffff;
if (kctl->id.subdevice & (HDA_SUBDEV_NID_FLAG|HDA_SUBDEV_AMP_FLAG))
kctl->id.subdevice = 0;
err = snd_ctl_add(codec->bus->card, kctl);
if (err < 0)
return err;
item = snd_array_new(&codec->mixers);
if (!item)
return -ENOMEM;
item->kctl = kctl;
item->nid = nid;
item->flags = flags;
return 0;
}
EXPORT_SYMBOL_HDA(snd_hda_ctl_add);
/**
* snd_hda_add_nid - Assign a NID to a control element
* @codec: HD-audio codec
* @nid: corresponding NID (optional)
* @kctl: the control element to assign
* @index: index to kctl
*
* Add the given control element to an array inside the codec instance.
* This function is used when #snd_hda_ctl_add cannot be used for 1:1
* NID:KCTL mapping - for example "Capture Source" selector.
*/
int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
unsigned int index, hda_nid_t nid)
{
struct hda_nid_item *item;
if (nid > 0) {
item = snd_array_new(&codec->nids);
if (!item)
return -ENOMEM;
item->kctl = kctl;
item->index = index;
item->nid = nid;
return 0;
}
printk(KERN_ERR "hda-codec: no NID for mapping control %s:%d:%d\n",
kctl->id.name, kctl->id.index, index);
return -EINVAL;
}
EXPORT_SYMBOL_HDA(snd_hda_add_nid);
/**
* snd_hda_ctls_clear - Clear all controls assigned to the given codec
* @codec: HD-audio codec
*/
void snd_hda_ctls_clear(struct hda_codec *codec)
{
int i;
struct hda_nid_item *items = codec->mixers.list;
for (i = 0; i < codec->mixers.used; i++)
snd_ctl_remove(codec->bus->card, items[i].kctl);
snd_array_free(&codec->mixers);
snd_array_free(&codec->nids);
}
/* pseudo device locking
* toggle card->shutdown to allow/disallow the device access (as a hack)
*/
int snd_hda_lock_devices(struct hda_bus *bus)
{
struct snd_card *card = bus->card;
struct hda_codec *codec;
spin_lock(&card->files_lock);
if (card->shutdown)
goto err_unlock;
card->shutdown = 1;
if (!list_empty(&card->ctl_files))
goto err_clear;
list_for_each_entry(codec, &bus->codec_list, list) {
int pcm;
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)
goto err_clear;
}
}
spin_unlock(&card->files_lock);
return 0;
err_clear:
card->shutdown = 0;
err_unlock:
spin_unlock(&card->files_lock);
return -EINVAL;
}
EXPORT_SYMBOL_HDA(snd_hda_lock_devices);
void snd_hda_unlock_devices(struct hda_bus *bus)
{
struct snd_card *card = bus->card;
card = bus->card;
spin_lock(&card->files_lock);
card->shutdown = 0;
spin_unlock(&card->files_lock);
}
EXPORT_SYMBOL_HDA(snd_hda_unlock_devices);
/**
* snd_hda_codec_reset - Clear all objects assigned to the codec
* @codec: HD-audio codec
*
* This frees the all PCM and control elements assigned to the codec, and
* clears the caches and restores the pin default configurations.
*
* When a device is being used, it returns -EBSY. If successfully freed,
* returns zero.
*/
int snd_hda_codec_reset(struct hda_codec *codec)
{
struct hda_bus *bus = codec->bus;
struct snd_card *card = bus->card;
int i;
if (snd_hda_lock_devices(bus) < 0)
return -EBUSY;
/* OK, let it free */
cancel_delayed_work_sync(&codec->jackpoll_work);
#ifdef CONFIG_PM
cancel_delayed_work_sync(&codec->power_work);
codec->power_on = 0;
codec->power_transition = 0;
codec->power_jiffies = jiffies;
flush_workqueue(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,
bus->pcm_dev_bits);
}
}
if (codec->patch_ops.free)
codec->patch_ops.free(codec);
memset(&codec->patch_ops, 0, sizeof(codec->patch_ops));
snd_hda_jack_tbl_clear(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);
snd_array_free(&codec->cvt_setups);
snd_array_free(&codec->spdif_out);
snd_array_free(&codec->verbs);
codec->num_pcms = 0;
codec->pcm_info = NULL;
codec->preset = NULL;
codec->slave_dig_outs = NULL;
codec->spdif_status_reset = 0;
module_put(codec->owner);
codec->owner = NULL;
/* allow device access again */
snd_hda_unlock_devices(bus);
return 0;
}
typedef int (*map_slave_func_t)(void *, struct snd_kcontrol *);
/* apply the function to all matching slave ctls in the mixer list */
static int map_slaves(struct hda_codec *codec, const char * const *slaves,
const char *suffix, map_slave_func_t func, void *data)
{
struct hda_nid_item *items;
const char * const *s;
int i, err;
items = codec->mixers.list;
for (i = 0; i < codec->mixers.used; i++) {
struct snd_kcontrol *sctl = items[i].kctl;
if (!sctl || !sctl->id.name ||
sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER)
continue;
for (s = slaves; *s; s++) {
char tmpname[sizeof(sctl->id.name)];
const char *name = *s;
if (suffix) {
snprintf(tmpname, sizeof(tmpname), "%s %s",
name, suffix);
name = tmpname;
}
if (!strcmp(sctl->id.name, name)) {
err = func(data, sctl);
if (err)
return err;
break;
}
}
}
return 0;
}
static int check_slave_present(void *data, struct snd_kcontrol *sctl)
{
return 1;
}
/* guess the value corresponding to 0dB */
static int get_kctl_0dB_offset(struct snd_kcontrol *kctl)
{
int _tlv[4];
const int *tlv = NULL;
int val = -1;
if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
/* FIXME: set_fs() hack for obtaining user-space TLV data */
mm_segment_t fs = get_fs();
set_fs(get_ds());
if (!kctl->tlv.c(kctl, 0, sizeof(_tlv), _tlv))
tlv = _tlv;
set_fs(fs);
} else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ)
tlv = kctl->tlv.p;
if (tlv && tlv[0] == SNDRV_CTL_TLVT_DB_SCALE)
val = -tlv[2] / tlv[3];
return val;
}
/* call kctl->put with the given value(s) */
static int put_kctl_with_value(struct snd_kcontrol *kctl, int val)
{
struct snd_ctl_elem_value *ucontrol;
ucontrol = kzalloc(sizeof(*ucontrol), GFP_KERNEL);
if (!ucontrol)
return -ENOMEM;
ucontrol->value.integer.value[0] = val;
ucontrol->value.integer.value[1] = val;
kctl->put(kctl, ucontrol);
kfree(ucontrol);
return 0;
}
/* initialize the slave volume with 0dB */
static int init_slave_0dB(void *data, struct snd_kcontrol *slave)
{
int offset = get_kctl_0dB_offset(slave);
if (offset > 0)
put_kctl_with_value(slave, offset);
return 0;
}
/* unmute the slave */
static int init_slave_unmute(void *data, struct snd_kcontrol *slave)
{
return put_kctl_with_value(slave, 1);
}
/**
* snd_hda_add_vmaster - create a virtual master control and add slaves
* @codec: HD-audio codec
* @name: vmaster control name
* @tlv: TLV data (optional)
* @slaves: slave control names (optional)
* @suffix: suffix string to each slave name (optional)
* @init_slave_vol: initialize slaves to unmute/0dB
* @ctl_ret: store the vmaster kcontrol in return
*
* Create a virtual master control with the given name. The TLV data
* must be either NULL or a valid data.
*
* @slaves is a NULL-terminated array of strings, each of which is a
* slave control name. All controls with these names are assigned to
* the new virtual master control.
*
* This function returns zero if successful or a negative error code.
*/
int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
unsigned int *tlv, const char * const *slaves,
const char *suffix, bool init_slave_vol,
struct snd_kcontrol **ctl_ret)
{
struct snd_kcontrol *kctl;
int err;
if (ctl_ret)
*ctl_ret = NULL;
err = map_slaves(codec, slaves, suffix, check_slave_present, NULL);
if (err != 1) {
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, 0, kctl);
if (err < 0)
return err;
err = map_slaves(codec, slaves, suffix,
(map_slave_func_t)snd_ctl_add_slave, kctl);
if (err < 0)
return err;
/* init with master mute & zero volume */
put_kctl_with_value(kctl, 0);
if (init_slave_vol)
map_slaves(codec, slaves, suffix,
tlv ? init_slave_0dB : init_slave_unmute, kctl);
if (ctl_ret)
*ctl_ret = kctl;
return 0;
}
EXPORT_SYMBOL_HDA(__snd_hda_add_vmaster);
/*
* mute-LED control using vmaster
*/
static int vmaster_mute_mode_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char * const texts[] = {
"On", "Off", "Follow Master"
};
unsigned int index;
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
uinfo->value.enumerated.items = 3;
index = uinfo->value.enumerated.item;
if (index >= 3)
index = 2;
strcpy(uinfo->value.enumerated.name, texts[index]);
return 0;
}