1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * HD audio Component Binding Interface 4 * 5 * Copyright (C) 2021 Cirrus Logic, Inc. and 6 * Cirrus Logic International Semiconductor Ltd. 7 */ 8 9 #ifndef __HDA_COMPONENT_H__ 10 #define __HDA_COMPONENT_H__ 11 12 #include <linux/acpi.h> 13 #include <linux/component.h> 14 #include <linux/mutex.h> 15 #include <sound/hda_codec.h> 16 17 #define HDA_MAX_COMPONENTS 4 18 #define HDA_MAX_NAME_SIZE 50 19 20 struct hda_component { 21 struct device *dev; 22 char name[HDA_MAX_NAME_SIZE]; 23 struct acpi_device *adev; 24 bool acpi_notifications_supported; 25 void (*acpi_notify)(acpi_handle handle, u32 event, struct device *dev); 26 void (*pre_playback_hook)(struct device *dev, int action); 27 void (*playback_hook)(struct device *dev, int action); 28 void (*post_playback_hook)(struct device *dev, int action); 29 }; 30 31 struct hda_component_parent { 32 struct mutex mutex; 33 struct hda_codec *codec; 34 struct hda_component comps[HDA_MAX_COMPONENTS]; 35 }; 36 37 #ifdef CONFIG_ACPI 38 void hda_component_acpi_device_notify(struct hda_component_parent *parent, 39 acpi_handle handle, u32 event, void *data); 40 int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc, 41 struct hda_component_parent *parent, 42 acpi_notify_handler handler, void *data); 43 void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc, 44 struct hda_component_parent *parent, 45 acpi_notify_handler handler); 46 #else 47 static inline void hda_component_acpi_device_notify(struct hda_component_parent *parent, 48 acpi_handle handle, 49 u32 event, 50 void *data) 51 { 52 } 53 54 static inline int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc, 55 struct hda_component_parent *parent, 56 acpi_notify_handler handler, 57 void *data) 58 59 { 60 return 0; 61 } 62 63 static inline void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc, 64 struct hda_component_parent *parent, 65 acpi_notify_handler handler) 66 { 67 } 68 #endif /* ifdef CONFIG_ACPI */ 69 70 void hda_component_manager_playback_hook(struct hda_component_parent *parent, int action); 71 72 int hda_component_manager_init(struct hda_codec *cdc, 73 struct hda_component_parent *parent, int count, 74 const char *bus, const char *hid, 75 const char *match_str, 76 const struct component_master_ops *ops); 77 78 void hda_component_manager_free(struct hda_codec *cdc, 79 const struct component_master_ops *ops); 80 81 int hda_component_manager_bind(struct hda_codec *cdc, struct hda_component_parent *parent); 82 83 static inline struct hda_component *hda_component_from_index(struct hda_component_parent *parent, 84 int index) 85 { 86 if (!parent) 87 return NULL; 88 89 if (index < 0 || index >= ARRAY_SIZE(parent->comps)) 90 return NULL; 91 92 return &parent->comps[index]; 93 } 94 95 static inline void hda_component_manager_unbind(struct hda_codec *cdc, 96 struct hda_component_parent *parent) 97 { 98 mutex_lock(&parent->mutex); 99 component_unbind_all(hda_codec_dev(cdc), parent); 100 mutex_unlock(&parent->mutex); 101 } 102 103 #endif /* ifndef __HDA_COMPONENT_H__ */ 104