diff options
Diffstat (limited to 'sound/pci/hda/hda_bind.c')
-rw-r--r-- | sound/pci/hda/hda_bind.c | 343 |
1 files changed, 0 insertions, 343 deletions
diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c deleted file mode 100644 index df8f88beddd0..000000000000 --- a/sound/pci/hda/hda_bind.c +++ /dev/null @@ -1,343 +0,0 @@ -// 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 <sound/core.h> -#include <sound/hda_codec.h> -#include "hda_local.h" -#include "hda_jack.h" - -/* - * find a matching codec id - */ -static int hda_codec_match(struct hdac_device *dev, const struct hdac_driver *drv) -{ - struct hda_codec *codec = container_of(dev, struct hda_codec, core); - const 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->card->shutdown || codec->bus->shutdown) - return; - - /* ignore unsol events during system suspend/resume */ - if (codec->core.dev.power.power_state.event != PM_EVENT_ON) - 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); - codec->preset = NULL; - 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); - } - - snd_hda_codec_disconnect_pcms(codec); - snd_hda_jack_tbl_disconnect(codec); - if (!refcount_dec_and_test(&codec->pcm_ref)) - wait_event(codec->remove_sleep, !refcount_read(&codec->pcm_ref)); - snd_power_sync_ref(codec->bus->card); - - if (codec->patch_ops.free) - codec->patch_ops.free(codec); - snd_hda_codec_cleanup_for_unbind(codec); - codec->preset = NULL; - module_put(dev->driver->owner); - return 0; -} - -static void hda_codec_driver_shutdown(struct device *dev) -{ - snd_hda_codec_shutdown(dev_to_hda_codec(dev)); -} - -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 = pm_ptr(&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 ASoC users, if snd_hda_hdmi_codec module is denylisted and any - * event causes i915 enumeration to fail, ->wcaps remains uninitialized. - */ - if (!codec->wcaps) - return true; - - 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 (codec->configured) - return 0; - - if (is_generic_config(codec)) - codec->probe_id = HDA_CODEC_ID_GENERIC; - else - codec->probe_id = 0; - - if (!device_is_registered(&codec->core.dev)) { - 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_dbg(codec, "Unable to bind the codec\n"); - return err; - } - } - - codec->configured = 1; - return 0; -} -EXPORT_SYMBOL_GPL(snd_hda_codec_configure); |