326 lines
7.6 KiB
C
326 lines
7.6 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* HD-audio codec driver binding
|
||
|
|
* Copyright (c) Takashi Iwai <tiwai@suse.de>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/mutex.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/export.h>
|
||
|
|
#include <linux/pm.h>
|
||
|
|
#include <linux/pm_runtime.h>
|
||
|
|
#include <sound/core.h>
|
||
|
|
#include <sound/hda_codec.h>
|
||
|
|
#include "hda_local.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* find a matching codec id
|
||
|
|
*/
|
||
|
|
static int hda_codec_match(struct hdac_device *dev, struct hdac_driver *drv)
|
||
|
|
{
|
||
|
|
struct hda_codec *codec = container_of(dev, struct hda_codec, core);
|
||
|
|
struct hda_codec_driver *driver =
|
||
|
|
container_of(drv, struct hda_codec_driver, core);
|
||
|
|
const struct hda_device_id *list;
|
||
|
|
/* check probe_id instead of vendor_id if set */
|
||
|
|
u32 id = codec->probe_id ? codec->probe_id : codec->core.vendor_id;
|
||
|
|
u32 rev_id = codec->core.revision_id;
|
||
|
|
|
||
|
|
for (list = driver->id; list->vendor_id; list++) {
|
||
|
|
if (list->vendor_id == id &&
|
||
|
|
(!list->rev_id || list->rev_id == rev_id)) {
|
||
|
|
codec->preset = list;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* process an unsolicited event */
|
||
|
|
static void hda_codec_unsol_event(struct hdac_device *dev, unsigned int ev)
|
||
|
|
{
|
||
|
|
struct hda_codec *codec = container_of(dev, struct hda_codec, core);
|
||
|
|
|
||
|
|
/* ignore unsol events during shutdown */
|
||
|
|
if (codec->bus->shutdown)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (codec->patch_ops.unsol_event)
|
||
|
|
codec->patch_ops.unsol_event(codec, ev);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* snd_hda_codec_set_name - set the codec name
|
||
|
|
* @codec: the HDA codec
|
||
|
|
* @name: name string to set
|
||
|
|
*/
|
||
|
|
int snd_hda_codec_set_name(struct hda_codec *codec, const char *name)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (!name)
|
||
|
|
return 0;
|
||
|
|
err = snd_hdac_device_set_chip_name(&codec->core, name);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
/* update the mixer name */
|
||
|
|
if (!*codec->card->mixername ||
|
||
|
|
codec->bus->mixer_assigned >= codec->core.addr) {
|
||
|
|
snprintf(codec->card->mixername,
|
||
|
|
sizeof(codec->card->mixername), "%s %s",
|
||
|
|
codec->core.vendor_name, codec->core.chip_name);
|
||
|
|
codec->bus->mixer_assigned = codec->core.addr;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(snd_hda_codec_set_name);
|
||
|
|
|
||
|
|
static int hda_codec_driver_probe(struct device *dev)
|
||
|
|
{
|
||
|
|
struct hda_codec *codec = dev_to_hda_codec(dev);
|
||
|
|
struct module *owner = dev->driver->owner;
|
||
|
|
hda_codec_patch_t patch;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (codec->bus->core.ext_ops) {
|
||
|
|
if (WARN_ON(!codec->bus->core.ext_ops->hdev_attach))
|
||
|
|
return -EINVAL;
|
||
|
|
return codec->bus->core.ext_ops->hdev_attach(&codec->core);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (WARN_ON(!codec->preset))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
err = snd_hda_codec_set_name(codec, codec->preset->name);
|
||
|
|
if (err < 0)
|
||
|
|
goto error;
|
||
|
|
err = snd_hdac_regmap_init(&codec->core);
|
||
|
|
if (err < 0)
|
||
|
|
goto error;
|
||
|
|
|
||
|
|
if (!try_module_get(owner)) {
|
||
|
|
err = -EINVAL;
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
|
||
|
|
patch = (hda_codec_patch_t)codec->preset->driver_data;
|
||
|
|
if (patch) {
|
||
|
|
err = patch(codec);
|
||
|
|
if (err < 0)
|
||
|
|
goto error_module_put;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = snd_hda_codec_build_pcms(codec);
|
||
|
|
if (err < 0)
|
||
|
|
goto error_module;
|
||
|
|
err = snd_hda_codec_build_controls(codec);
|
||
|
|
if (err < 0)
|
||
|
|
goto error_module;
|
||
|
|
/* only register after the bus probe finished; otherwise it's racy */
|
||
|
|
if (!codec->bus->bus_probing && codec->card->registered) {
|
||
|
|
err = snd_card_register(codec->card);
|
||
|
|
if (err < 0)
|
||
|
|
goto error_module;
|
||
|
|
snd_hda_codec_register(codec);
|
||
|
|
}
|
||
|
|
|
||
|
|
codec->core.lazy_cache = true;
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
error_module:
|
||
|
|
if (codec->patch_ops.free)
|
||
|
|
codec->patch_ops.free(codec);
|
||
|
|
error_module_put:
|
||
|
|
module_put(owner);
|
||
|
|
|
||
|
|
error:
|
||
|
|
snd_hda_codec_cleanup_for_unbind(codec);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hda_codec_driver_remove(struct device *dev)
|
||
|
|
{
|
||
|
|
struct hda_codec *codec = dev_to_hda_codec(dev);
|
||
|
|
|
||
|
|
if (codec->bus->core.ext_ops) {
|
||
|
|
if (WARN_ON(!codec->bus->core.ext_ops->hdev_detach))
|
||
|
|
return -EINVAL;
|
||
|
|
return codec->bus->core.ext_ops->hdev_detach(&codec->core);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (codec->patch_ops.free)
|
||
|
|
codec->patch_ops.free(codec);
|
||
|
|
snd_hda_codec_cleanup_for_unbind(codec);
|
||
|
|
module_put(dev->driver->owner);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void hda_codec_driver_shutdown(struct device *dev)
|
||
|
|
{
|
||
|
|
struct hda_codec *codec = dev_to_hda_codec(dev);
|
||
|
|
|
||
|
|
if (!pm_runtime_suspended(dev) && codec->patch_ops.reboot_notify)
|
||
|
|
codec->patch_ops.reboot_notify(codec);
|
||
|
|
}
|
||
|
|
|
||
|
|
int __hda_codec_driver_register(struct hda_codec_driver *drv, const char *name,
|
||
|
|
struct module *owner)
|
||
|
|
{
|
||
|
|
drv->core.driver.name = name;
|
||
|
|
drv->core.driver.owner = owner;
|
||
|
|
drv->core.driver.bus = &snd_hda_bus_type;
|
||
|
|
drv->core.driver.probe = hda_codec_driver_probe;
|
||
|
|
drv->core.driver.remove = hda_codec_driver_remove;
|
||
|
|
drv->core.driver.shutdown = hda_codec_driver_shutdown;
|
||
|
|
drv->core.driver.pm = &hda_codec_driver_pm;
|
||
|
|
drv->core.type = HDA_DEV_LEGACY;
|
||
|
|
drv->core.match = hda_codec_match;
|
||
|
|
drv->core.unsol_event = hda_codec_unsol_event;
|
||
|
|
return driver_register(&drv->core.driver);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(__hda_codec_driver_register);
|
||
|
|
|
||
|
|
void hda_codec_driver_unregister(struct hda_codec_driver *drv)
|
||
|
|
{
|
||
|
|
driver_unregister(&drv->core.driver);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(hda_codec_driver_unregister);
|
||
|
|
|
||
|
|
static inline bool codec_probed(struct hda_codec *codec)
|
||
|
|
{
|
||
|
|
return device_attach(hda_codec_dev(codec)) > 0 && codec->preset;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* try to auto-load codec module */
|
||
|
|
static void request_codec_module(struct hda_codec *codec)
|
||
|
|
{
|
||
|
|
#ifdef MODULE
|
||
|
|
char modalias[32];
|
||
|
|
const char *mod = NULL;
|
||
|
|
|
||
|
|
switch (codec->probe_id) {
|
||
|
|
case HDA_CODEC_ID_GENERIC_HDMI:
|
||
|
|
#if IS_MODULE(CONFIG_SND_HDA_CODEC_HDMI)
|
||
|
|
mod = "snd-hda-codec-hdmi";
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
case HDA_CODEC_ID_GENERIC:
|
||
|
|
#if IS_MODULE(CONFIG_SND_HDA_GENERIC)
|
||
|
|
mod = "snd-hda-codec-generic";
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
snd_hdac_codec_modalias(&codec->core, modalias, sizeof(modalias));
|
||
|
|
mod = modalias;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mod)
|
||
|
|
request_module(mod);
|
||
|
|
#endif /* MODULE */
|
||
|
|
}
|
||
|
|
|
||
|
|
/* try to auto-load and bind the codec module */
|
||
|
|
static void codec_bind_module(struct hda_codec *codec)
|
||
|
|
{
|
||
|
|
#ifdef MODULE
|
||
|
|
request_codec_module(codec);
|
||
|
|
if (codec_probed(codec))
|
||
|
|
return;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
|
||
|
|
/* if all audio out widgets are digital, let's assume the codec as a HDMI/DP */
|
||
|
|
static bool is_likely_hdmi_codec(struct hda_codec *codec)
|
||
|
|
{
|
||
|
|
hda_nid_t nid;
|
||
|
|
|
||
|
|
for_each_hda_codec_node(nid, codec) {
|
||
|
|
unsigned int wcaps = get_wcaps(codec, nid);
|
||
|
|
switch (get_wcaps_type(wcaps)) {
|
||
|
|
case AC_WID_AUD_IN:
|
||
|
|
return false; /* HDMI parser supports only HDMI out */
|
||
|
|
case AC_WID_AUD_OUT:
|
||
|
|
if (!(wcaps & AC_WCAP_DIGITAL))
|
||
|
|
return false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
/* no HDMI codec parser support */
|
||
|
|
#define is_likely_hdmi_codec(codec) false
|
||
|
|
#endif /* CONFIG_SND_HDA_CODEC_HDMI */
|
||
|
|
|
||
|
|
static int codec_bind_generic(struct hda_codec *codec)
|
||
|
|
{
|
||
|
|
if (codec->probe_id)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
if (is_likely_hdmi_codec(codec)) {
|
||
|
|
codec->probe_id = HDA_CODEC_ID_GENERIC_HDMI;
|
||
|
|
request_codec_module(codec);
|
||
|
|
if (codec_probed(codec))
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
codec->probe_id = HDA_CODEC_ID_GENERIC;
|
||
|
|
request_codec_module(codec);
|
||
|
|
if (codec_probed(codec))
|
||
|
|
return 0;
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if IS_ENABLED(CONFIG_SND_HDA_GENERIC)
|
||
|
|
#define is_generic_config(codec) \
|
||
|
|
(codec->modelname && !strcmp(codec->modelname, "generic"))
|
||
|
|
#else
|
||
|
|
#define is_generic_config(codec) 0
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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;
|
||
|
|
|
||
|
|
if (is_generic_config(codec))
|
||
|
|
codec->probe_id = HDA_CODEC_ID_GENERIC;
|
||
|
|
else
|
||
|
|
codec->probe_id = 0;
|
||
|
|
|
||
|
|
err = snd_hdac_device_register(&codec->core);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
if (!codec->preset)
|
||
|
|
codec_bind_module(codec);
|
||
|
|
if (!codec->preset) {
|
||
|
|
err = codec_bind_generic(codec);
|
||
|
|
if (err < 0) {
|
||
|
|
codec_err(codec, "Unable to bind the codec\n");
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
error:
|
||
|
|
snd_hdac_device_unregister(&codec->core);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(snd_hda_codec_configure);
|