diff options
Diffstat (limited to 'sound/pci/hda/hda_component.c')
-rw-r--r-- | sound/pci/hda/hda_component.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/sound/pci/hda/hda_component.c b/sound/pci/hda/hda_component.c deleted file mode 100644 index 71860e2d6377..000000000000 --- a/sound/pci/hda/hda_component.c +++ /dev/null @@ -1,212 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * HD audio Component Binding Interface - * - * Copyright (C) 2021, 2023 Cirrus Logic, Inc. and - * Cirrus Logic International Semiconductor Ltd. - */ - -#include <linux/acpi.h> -#include <linux/component.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <sound/hda_codec.h> -#include "hda_component.h" -#include "hda_local.h" - -#ifdef CONFIG_ACPI -void hda_component_acpi_device_notify(struct hda_component_parent *parent, - acpi_handle handle, u32 event, void *data) -{ - struct hda_component *comp; - int i; - - mutex_lock(&parent->mutex); - for (i = 0; i < ARRAY_SIZE(parent->comps); i++) { - comp = hda_component_from_index(parent, i); - if (comp->dev && comp->acpi_notify) - comp->acpi_notify(acpi_device_handle(comp->adev), event, comp->dev); - } - mutex_unlock(&parent->mutex); -} -EXPORT_SYMBOL_NS_GPL(hda_component_acpi_device_notify, "SND_HDA_SCODEC_COMPONENT"); - -int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc, - struct hda_component_parent *parent, - acpi_notify_handler handler, void *data) -{ - bool support_notifications = false; - struct acpi_device *adev; - struct hda_component *comp; - int ret; - int i; - - adev = parent->comps[0].adev; - if (!acpi_device_handle(adev)) - return 0; - - for (i = 0; i < ARRAY_SIZE(parent->comps); i++) { - comp = hda_component_from_index(parent, i); - support_notifications = support_notifications || - comp->acpi_notifications_supported; - } - - if (support_notifications) { - ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, - handler, data); - if (ret < 0) { - codec_warn(cdc, "Failed to install notify handler: %d\n", ret); - return 0; - } - - codec_dbg(cdc, "Notify handler installed\n"); - } - - return 0; -} -EXPORT_SYMBOL_NS_GPL(hda_component_manager_bind_acpi_notifications, "SND_HDA_SCODEC_COMPONENT"); - -void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc, - struct hda_component_parent *parent, - acpi_notify_handler handler) -{ - struct acpi_device *adev; - int ret; - - adev = parent->comps[0].adev; - if (!acpi_device_handle(adev)) - return; - - ret = acpi_remove_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, handler); - if (ret < 0) - codec_warn(cdc, "Failed to uninstall notify handler: %d\n", ret); -} -EXPORT_SYMBOL_NS_GPL(hda_component_manager_unbind_acpi_notifications, "SND_HDA_SCODEC_COMPONENT"); -#endif /* ifdef CONFIG_ACPI */ - -void hda_component_manager_playback_hook(struct hda_component_parent *parent, int action) -{ - struct hda_component *comp; - int i; - - mutex_lock(&parent->mutex); - for (i = 0; i < ARRAY_SIZE(parent->comps); i++) { - comp = hda_component_from_index(parent, i); - if (comp->dev && comp->pre_playback_hook) - comp->pre_playback_hook(comp->dev, action); - } - for (i = 0; i < ARRAY_SIZE(parent->comps); i++) { - comp = hda_component_from_index(parent, i); - if (comp->dev && comp->playback_hook) - comp->playback_hook(comp->dev, action); - } - for (i = 0; i < ARRAY_SIZE(parent->comps); i++) { - comp = hda_component_from_index(parent, i); - if (comp->dev && comp->post_playback_hook) - comp->post_playback_hook(comp->dev, action); - } - mutex_unlock(&parent->mutex); -} -EXPORT_SYMBOL_NS_GPL(hda_component_manager_playback_hook, "SND_HDA_SCODEC_COMPONENT"); - -struct hda_scodec_match { - const char *bus; - const char *hid; - const char *match_str; - int index; -}; - -/* match the device name in a slightly relaxed manner */ -static int hda_comp_match_dev_name(struct device *dev, void *data) -{ - struct hda_scodec_match *p = data; - const char *d = dev_name(dev); - int n = strlen(p->bus); - char tmp[32]; - - /* check the bus name */ - if (strncmp(d, p->bus, n)) - return 0; - /* skip the bus number */ - if (isdigit(d[n])) - n++; - /* the rest must be exact matching */ - snprintf(tmp, sizeof(tmp), p->match_str, p->hid, p->index); - return !strcmp(d + n, tmp); -} - -int hda_component_manager_bind(struct hda_codec *cdc, - struct hda_component_parent *parent) -{ - int ret; - - /* Init shared and component specific data */ - memset(parent->comps, 0, sizeof(parent->comps)); - - mutex_lock(&parent->mutex); - ret = component_bind_all(hda_codec_dev(cdc), parent); - mutex_unlock(&parent->mutex); - - return ret; -} -EXPORT_SYMBOL_NS_GPL(hda_component_manager_bind, "SND_HDA_SCODEC_COMPONENT"); - -int hda_component_manager_init(struct hda_codec *cdc, - struct hda_component_parent *parent, int count, - const char *bus, const char *hid, - const char *match_str, - const struct component_master_ops *ops) -{ - struct device *dev = hda_codec_dev(cdc); - struct component_match *match = NULL; - struct hda_scodec_match *sm; - int ret, i; - - if (parent->codec) { - codec_err(cdc, "Component binding already created (SSID: %x)\n", - cdc->core.subsystem_id); - return -EINVAL; - } - parent->codec = cdc; - - mutex_init(&parent->mutex); - - for (i = 0; i < count; i++) { - sm = devm_kmalloc(dev, sizeof(*sm), GFP_KERNEL); - if (!sm) - return -ENOMEM; - - sm->bus = bus; - sm->hid = hid; - sm->match_str = match_str; - sm->index = i; - component_match_add(dev, &match, hda_comp_match_dev_name, sm); - } - - ret = component_master_add_with_match(dev, ops, match); - if (ret) - codec_err(cdc, "Fail to register component aggregator %d\n", ret); - - return ret; -} -EXPORT_SYMBOL_NS_GPL(hda_component_manager_init, "SND_HDA_SCODEC_COMPONENT"); - -void hda_component_manager_free(struct hda_component_parent *parent, - const struct component_master_ops *ops) -{ - struct device *dev; - - if (!parent->codec) - return; - - dev = hda_codec_dev(parent->codec); - - component_master_del(dev, ops); - - parent->codec = NULL; -} -EXPORT_SYMBOL_NS_GPL(hda_component_manager_free, "SND_HDA_SCODEC_COMPONENT"); - -MODULE_DESCRIPTION("HD Audio component binding library"); -MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); -MODULE_LICENSE("GPL"); |