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hda_codec.c
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hda_codec.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Universal Interface for Intel High Definition Audio Codec
*
* Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <sound/core.h>
#include <sound/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>
#include <sound/hda_component.h>
#define codec_in_pm(codec) snd_hdac_is_in_pm(&codec->core)
#define hda_codec_is_power_on(codec) snd_hdac_is_power_on(&codec->core)
#define codec_has_epss(codec) \
((codec)->core.power_caps & AC_PWRST_EPSS)
#define codec_has_clkstop(codec) \
((codec)->core.power_caps & AC_PWRST_CLKSTOP)
/*
* Send and receive a verb - passed to exec_verb override for hdac_device
*/
static int codec_exec_verb(struct hdac_device *dev, unsigned int cmd,
unsigned int flags, unsigned int *res)
{
struct hda_codec *codec = container_of(dev, struct hda_codec, core);
struct hda_bus *bus = codec->bus;
int err;
if (cmd == ~0)
return -1;
again:
snd_hda_power_up_pm(codec);
mutex_lock(&bus->core.cmd_mutex);
if (flags & HDA_RW_NO_RESPONSE_FALLBACK)
bus->no_response_fallback = 1;
err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr,
cmd, res);
bus->no_response_fallback = 0;
mutex_unlock(&bus->core.cmd_mutex);
snd_hda_power_down_pm(codec);
if (!codec_in_pm(codec) && res && err == -EAGAIN) {
if (bus->response_reset) {
codec_dbg(codec,
"resetting BUS due to fatal communication error\n");
snd_hda_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_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_GPL(snd_hda_sequence_write);
/* connection list element */
struct hda_conn_list {
struct list_head list;
int len;
hda_nid_t nid;
hda_nid_t conns[];
};
/* 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(struct_size(p, conns, len), 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_array(len, sizeof(hda_nid_t), 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
* @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_GPL(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) {
codec_err(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_GPL(snd_hda_get_connections);
/**
* 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_GPL(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) {
codec_dbg(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_GPL(snd_hda_get_conn_index);
/**
* snd_hda_get_num_devices - get DEVLIST_LEN parameter of the given widget
* @codec: the HDA codec
* @nid: NID of the pin to parse
*
* Get the device entry number on the given widget. This is a feature of
* DP MST audio. Each pin can have several device entries in it.
*/
unsigned int snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid)
{
unsigned int wcaps = get_wcaps(codec, nid);
unsigned int parm;
if (!codec->dp_mst || !(wcaps & AC_WCAP_DIGITAL) ||
get_wcaps_type(wcaps) != AC_WID_PIN)
return 0;
parm = snd_hdac_read_parm_uncached(&codec->core, nid, AC_PAR_DEVLIST_LEN);
if (parm == -1)
parm = 0;
return parm & AC_DEV_LIST_LEN_MASK;
}
EXPORT_SYMBOL_GPL(snd_hda_get_num_devices);
/**
* snd_hda_get_devices - copy device list without cache
* @codec: the HDA codec
* @nid: NID of the pin to parse
* @dev_list: device list array
* @max_devices: max. number of devices to store
*
* Copy the device list. This info is dynamic and so not cached.
* Currently called only from hda_proc.c, so not exported.
*/
int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
u8 *dev_list, int max_devices)
{
unsigned int parm;
int i, dev_len, devices;
parm = snd_hda_get_num_devices(codec, nid);
if (!parm) /* not multi-stream capable */
return 0;
dev_len = parm + 1;
dev_len = dev_len < max_devices ? dev_len : max_devices;
devices = 0;
while (devices < dev_len) {
if (snd_hdac_read(&codec->core, nid,
AC_VERB_GET_DEVICE_LIST, devices, &parm))
break; /* error */
for (i = 0; i < 8; i++) {
dev_list[devices] = (u8)parm;
parm >>= 4;
devices++;
if (devices >= dev_len)
break;
}
}
return devices;
}
/**
* snd_hda_get_dev_select - get device entry select on the pin
* @codec: the HDA codec
* @nid: NID of the pin to get device entry select
*
* Get the devcie entry select on the pin. Return the device entry
* id selected on the pin. Return 0 means the first device entry
* is selected or MST is not supported.
*/
int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid)
{
/* not support dp_mst will always return 0, using first dev_entry */
if (!codec->dp_mst)
return 0;
return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DEVICE_SEL, 0);
}
EXPORT_SYMBOL_GPL(snd_hda_get_dev_select);
/**
* snd_hda_set_dev_select - set device entry select on the pin
* @codec: the HDA codec
* @nid: NID of the pin to set device entry select
* @dev_id: device entry id to be set
*
* Set the device entry select on the pin nid.
*/
int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id)
{
int ret, num_devices;
/* not support dp_mst will always return 0, using first dev_entry */
if (!codec->dp_mst)
return 0;
/* AC_PAR_DEVLIST_LEN is 0 based. */
num_devices = snd_hda_get_num_devices(codec, nid) + 1;
/* If Device List Length is 0 (num_device = 1),
* the pin is not multi stream capable.
* Do nothing in this case.
*/
if (num_devices == 1)
return 0;
/* Behavior of setting index being equal to or greater than
* Device List Length is not predictable
*/
if (num_devices <= dev_id)
return -EINVAL;
ret = snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_DEVICE_SEL, dev_id);
return ret;
}
EXPORT_SYMBOL_GPL(snd_hda_set_dev_select);
/*
* 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->wcaps = kmalloc_array(codec->core.num_nodes, 4, GFP_KERNEL);
if (!codec->wcaps)
return -ENOMEM;
nid = codec->core.start_nid;
for (i = 0; i < codec->core.num_nodes; i++, nid++)
codec->wcaps[i] = snd_hdac_read_parm_uncached(&codec->core,
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)
{
hda_nid_t nid;
for_each_hda_codec_node(nid, codec) {
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);
/*
* all device entries are the same widget control so far
* fixme: if any codec is different, need fix here
*/
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)
{
struct hda_pincfg *pin;
int i;
snd_array_for_each(array, i, pin) {
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_GPL(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_RECONFIG
{
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_GPL(snd_hda_codec_get_pincfg);
/**
* snd_hda_codec_set_pin_target - remember the current pinctl target value
* @codec: the HDA codec
* @nid: pin NID
* @val: assigned pinctl value
*
* This function stores the given value to a pinctl target value in the
* pincfg table. This isn't always as same as the actually written value
* but can be referred at any time via snd_hda_codec_get_pin_target().
*/
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_GPL(snd_hda_codec_set_pin_target);
/**
* snd_hda_codec_get_pin_target - return the current pinctl target value
* @codec: the HDA codec
* @nid: pin NID
*/
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_GPL(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)
{
const struct hda_pincfg *pin;
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;
snd_array_for_each(&codec->init_pins, i, pin) {
/* 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_GPL(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)
{
const struct hda_pincfg *pin;
int i;
if (!codec->pins_shutup)
return;
if (codec->bus->shutdown)
return;
snd_array_for_each(&codec->init_pins, i, pin) {
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);
/* for non-polling trigger: we need nothing if already powered on */
if (!codec->jackpoll_interval && snd_hdac_is_power_on(&codec->core))
return;
/* the power-up/down sequence triggers the runtime resume */
snd_hda_power_up_pm(codec);
/* update jacks manually if polling is required, too */
if (codec->jackpoll_interval) {
snd_hda_jack_set_dirty_all(codec);
snd_hda_jack_poll_all(codec);
}
snd_hda_power_down_pm(codec);
if (!codec->jackpoll_interval)
return;
schedule_delayed_work(&codec->jackpoll_work,
codec->jackpoll_interval);
}
/* release all pincfg lists */
static void free_init_pincfgs(struct hda_codec *codec)
{
snd_array_free(&codec->driver_pins);
#ifdef CONFIG_SND_HDA_RECONFIG
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;
snd_array_for_each(&codec->cvt_setups, i, p) {
if (p->nid == nid)
return p;
}
p = snd_array_new(&codec->cvt_setups);
if (p)
p->nid = nid;
return p;
}
/*
* PCM device
*/
void snd_hda_codec_pcm_put(struct hda_pcm *pcm)
{
if (refcount_dec_and_test(&pcm->codec->pcm_ref))
wake_up(&pcm->codec->remove_sleep);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_put);
struct hda_pcm *snd_hda_codec_pcm_new(struct hda_codec *codec,
const char *fmt, ...)
{
struct hda_pcm *pcm;
va_list args;
pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
if (!pcm)
return NULL;
pcm->codec = codec;
va_start(args, fmt);
pcm->name = kvasprintf(GFP_KERNEL, fmt, args);
va_end(args);
if (!pcm->name) {
kfree(pcm);
return NULL;
}
list_add_tail(&pcm->list, &codec->pcm_list_head);
refcount_inc(&codec->pcm_ref);
return pcm;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_pcm_new);
/*
* codec destructor
*/
void snd_hda_codec_disconnect_pcms(struct hda_codec *codec)
{
struct hda_pcm *pcm;
list_for_each_entry(pcm, &codec->pcm_list_head, list) {
if (pcm->disconnected)
continue;
if (pcm->pcm)
snd_device_disconnect(codec->card, pcm->pcm);
snd_hda_codec_pcm_put(pcm);
pcm->disconnected = 1;
}
}
static void codec_release_pcms(struct hda_codec *codec)
{
struct hda_pcm *pcm, *n;
list_for_each_entry_safe(pcm, n, &codec->pcm_list_head, list) {
list_del(&pcm->list);
if (pcm->pcm)
snd_device_free(pcm->codec->card, pcm->pcm);
clear_bit(pcm->device, pcm->codec->bus->pcm_dev_bits);
kfree(pcm->name);
kfree(pcm);
}
}
/**
* snd_hda_codec_cleanup_for_unbind - Prepare codec for removal
* @codec: codec device to cleanup
*/
void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec)
{
if (codec->core.registered) {
/* pm_runtime_put() is called in snd_hdac_device_exit() */
pm_runtime_get_noresume(hda_codec_dev(codec));
pm_runtime_disable(hda_codec_dev(codec));
codec->core.registered = 0;
}
snd_hda_codec_disconnect_pcms(codec);
cancel_delayed_work_sync(&codec->jackpoll_work);
if (!codec->in_freeing)
snd_hda_ctls_clear(codec);
codec_release_pcms(codec);
snd_hda_detach_beep_device(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 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->follower_dig_outs = NULL;
codec->spdif_status_reset = 0;
snd_array_free(&codec->mixers);
snd_array_free(&codec->nids);
remove_conn_list(codec);
snd_hdac_regmap_exit(&codec->core);
codec->configured = 0;
refcount_set(&codec->pcm_ref, 1); /* reset refcount */
}
EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup_for_unbind);
static unsigned int hda_set_power_state(struct hda_codec *codec,
unsigned int power_state);
/* enable/disable display power per codec */
void snd_hda_codec_display_power(struct hda_codec *codec, bool enable)
{
if (codec->display_power_control)
snd_hdac_display_power(&codec->bus->core, codec->addr, enable);
}
/**
* snd_hda_codec_register - Finalize codec initialization
* @codec: codec device to register
*
* Also called from hda_bind.c
*/
void snd_hda_codec_register(struct hda_codec *codec)
{
if (codec->core.registered)
return;
if (device_is_registered(hda_codec_dev(codec))) {
snd_hda_codec_display_power(codec, true);
pm_runtime_enable(hda_codec_dev(codec));
/* it was powered up in snd_hda_codec_new(), now all done */
snd_hda_power_down(codec);
codec->core.registered = 1;
}
}
EXPORT_SYMBOL_GPL(snd_hda_codec_register);
static int snd_hda_codec_dev_register(struct snd_device *device)
{
snd_hda_codec_register(device->device_data);
return 0;
}
/**
* snd_hda_codec_unregister - Unregister specified codec device
* @codec: codec device to unregister
*/
void snd_hda_codec_unregister(struct hda_codec *codec)
{
codec->in_freeing = 1;
/*
* snd_hda_codec_device_new() is used by legacy HDA and ASoC driver.
* We can't unregister ASoC device since it will be unregistered in
* snd_hdac_ext_bus_device_remove().
*/
if (codec->core.type == HDA_DEV_LEGACY)
snd_hdac_device_unregister(&codec->core);
snd_hda_codec_display_power(codec, false);
/*
* In the case of ASoC HD-audio bus, the device refcount is released in
* snd_hdac_ext_bus_device_remove() explicitly.
*/
if (codec->core.type == HDA_DEV_LEGACY)
put_device(hda_codec_dev(codec));
}
EXPORT_SYMBOL_GPL(snd_hda_codec_unregister);
static int snd_hda_codec_dev_free(struct snd_device *device)
{
snd_hda_codec_unregister(device->device_data);
return 0;
}
static void snd_hda_codec_dev_release(struct device *dev)
{
struct hda_codec *codec = dev_to_hda_codec(dev);
free_init_pincfgs(codec);
snd_hdac_device_exit(&codec->core);
snd_hda_sysfs_clear(codec);
kfree(codec->modelname);
kfree(codec->wcaps);
kfree(codec);
}
#define DEV_NAME_LEN 31
/**
* snd_hda_codec_device_init - allocate HDA codec device
* @bus: codec's parent bus
* @codec_addr: the codec address on the parent bus
* @fmt: format string for the device's name
*
* Returns newly allocated codec device or ERR_PTR() on failure.
*/
struct hda_codec *
snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr,
const char *fmt, ...)
{
va_list vargs;
char name[DEV_NAME_LEN];
struct hda_codec *codec;
int err;
if (snd_BUG_ON(!bus))
return ERR_PTR(-EINVAL);
if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
return ERR_PTR(-EINVAL);
codec = kzalloc(sizeof(*codec), GFP_KERNEL);
if (!codec)
return ERR_PTR(-ENOMEM);
va_start(vargs, fmt);
vsprintf(name, fmt, vargs);
va_end(vargs);
err = snd_hdac_device_init(&codec->core, &bus->core, name, codec_addr);
if (err < 0) {
kfree(codec);
return ERR_PTR(err);
}
codec->bus = bus;
codec->depop_delay = -1;
codec->fixup_id = HDA_FIXUP_ID_NOT_SET;
codec->core.dev.release = snd_hda_codec_dev_release;
codec->core.exec_verb = codec_exec_verb;
codec->core.type = HDA_DEV_LEGACY;
mutex_init(&codec->spdif_mutex);
mutex_init(&codec->control_mutex);
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_LIST_HEAD(&codec->pcm_list_head);
INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work);
refcount_set(&codec->pcm_ref, 1);
init_waitqueue_head(&codec->remove_sleep);
return codec;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_device_init);
/**
* snd_hda_codec_new - create a HDA codec
* @bus: the bus to assign
* @card: card for this codec
* @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, struct snd_card *card,
unsigned int codec_addr, struct hda_codec **codecp)
{
struct hda_codec *codec;
int ret;
codec = snd_hda_codec_device_init(bus, codec_addr, "hdaudioC%dD%d",
card->number, codec_addr);
if (IS_ERR(codec))
return PTR_ERR(codec);
*codecp = codec;
ret = snd_hda_codec_device_new(bus, card, codec_addr, *codecp, true);
if (ret)
put_device(hda_codec_dev(*codecp));
return ret;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_new);
int snd_hda_codec_device_new(struct hda_bus *bus, struct snd_card *card,
unsigned int codec_addr, struct hda_codec *codec,
bool snddev_managed)
{
char component[31];
hda_nid_t fg;
int err;
static const struct snd_device_ops dev_ops = {
.dev_register = snd_hda_codec_dev_register,
.dev_free = snd_hda_codec_dev_free,
};
dev_dbg(card->dev, "%s: entry\n", __func__);
if (snd_BUG_ON(!bus))
return -EINVAL;
if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
return -EINVAL;