4 files changed, 76 insertions, 0 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 28ba643c92c1..3574e4a2bf14 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -27,6 +27,7 @@
 
 #include <linux/errno.h>
 #include <linux/ioport.h>       /* for struct resource */
+#include <linux/device.h>
 
 #ifdef  CONFIG_ACPI
 
@@ -251,6 +252,26 @@ extern int pnpacpi_disabled;
 
 #define PXM_INVAL       (-1)
 
+bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res);
+bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res);
+bool acpi_dev_resource_address_space(struct acpi_resource *ares,
+                                     struct resource *res);
+bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares,
+                                         struct resource *res);
+unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable);
+bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index,
+                                 struct resource *res);
+
+struct resource_list_entry {
+        struct list_head node;
+        struct resource res;
+};
+
+void acpi_dev_free_resource_list(struct list_head *list);
+int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list,
+                           int (*preproc)(struct acpi_resource *, void *),
+                           void *preproc_data);
+
 int acpi_check_resource_conflict(const struct resource *res);
 
 int acpi_check_region(resource_size_t start, resource_size_t n,
@@ -365,6 +386,17 @@ extern int acpi_nvs_register(__u64 start, __u64 size);
 extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
                                     void *data);
 
+const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
+                                               const struct device *dev);
+
+static inline bool acpi_driver_match_device(struct device *dev,
+                                            const struct device_driver *drv)
+{
+        return !!acpi_match_device(drv->acpi_match_table, dev);
+}
+
+#define ACPI_PTR(_ptr)  (_ptr)
+
 #else   /* !CONFIG_ACPI */
 
 #define acpi_disabled 1
@@ -419,6 +451,22 @@ static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *),
         return 0;
 }
 
+struct acpi_device_id;
+
+static inline const struct acpi_device_id *acpi_match_device(
+        const struct acpi_device_id *ids, const struct device *dev)
+{
+        return NULL;
+}
+
+static inline bool acpi_driver_match_device(struct device *dev,
+                                            const struct device_driver *drv)
+{
+        return false;
+}
+
+#define ACPI_PTR(_ptr)  (NULL)
+
 #endif  /* !CONFIG_ACPI */
 
 #ifdef CONFIG_ACPI
diff --git a/include/linux/device.h b/include/linux/device.h
index 86ef6ab553b1..05292e488346 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -190,6 +190,7 @@ extern struct klist *bus_get_device_klist(struct bus_type *bus);
  * @mod_name:   Used for built-in modules.
  * @suppress_bind_attrs: Disables bind/unbind via sysfs.
  * @of_match_table: The open firmware table.
+ * @acpi_match_table: The ACPI match table.
  * @probe:      Called to query the existence of a specific device,
  *              whether this driver can work with it, and bind the driver
  *              to a specific device.
@@ -223,6 +224,7 @@ struct device_driver {
         bool suppress_bind_attrs;       /* disables bind/unbind via sysfs */
 
         const struct of_device_id       *of_match_table;
+        const struct acpi_device_id     *acpi_match_table;
 
         int (*probe) (struct device *dev);
         int (*remove) (struct device *dev);
@@ -576,6 +578,12 @@ struct device_dma_parameters {
         unsigned long segment_boundary_mask;
 };
 
+struct acpi_dev_node {
+#ifdef CONFIG_ACPI
+        void    *handle;
+#endif
+};
+
 /**
  * struct device - The basic device structure
  * @parent:     The device's "parent" device, the device to which it is attached.
@@ -616,6 +624,7 @@ struct device_dma_parameters {
  * @dma_mem:    Internal for coherent mem override.
  * @archdata:   For arch-specific additions.
  * @of_node:    Associated device tree node.
+ * @acpi_node:  Associated ACPI device node.
  * @devt:       For creating the sysfs "dev".
  * @id:         device instance
  * @devres_lock: Spinlock to protect the resource of the device.
@@ -680,6 +689,7 @@ struct device {
         struct dev_archdata     archdata;
 
         struct device_node      *of_node; /* associated device tree node */
+        struct acpi_dev_node    acpi_node; /* associated ACPI device node */
 
         dev_t                   devt;   /* dev_t, creates the sysfs "dev" */
         u32                     id;     /* device instance */
@@ -700,6 +710,14 @@ static inline struct device *kobj_to_dev(struct kobject *kobj)
         return container_of(kobj, struct device, kobj);
 }
 
+#ifdef CONFIG_ACPI
+#define ACPI_HANDLE(dev)        ((dev)->acpi_node.handle)
+#define ACPI_HANDLE_SET(dev, _handle_)  (dev)->acpi_node.handle = (_handle_)
+#else
+#define ACPI_HANDLE(dev)        (NULL)
+#define ACPI_HANDLE_SET(dev, _handle_)  do { } while (0)
+#endif
+
 /* Get the wakeup routines, which depend on struct device */
 #include <linux/pm_wakeup.h>
 
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 800de224336b..d0c4db7b4872 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -259,6 +259,7 @@ static inline void i2c_set_clientdata(struct i2c_client *dev, void *data)
  * @platform_data: stored in i2c_client.dev.platform_data
  * @archdata: copied into i2c_client.dev.archdata
  * @of_node: pointer to OpenFirmware device node
+ * @acpi_node: ACPI device node
  * @irq: stored in i2c_client.irq
  *
  * I2C doesn't actually support hardware probing, although controllers and
@@ -279,6 +280,7 @@ struct i2c_board_info {
         void            *platform_data;
         struct dev_archdata     *archdata;
         struct device_node *of_node;
+        struct acpi_dev_node acpi_node;
         int             irq;
 };
 
@@ -501,4 +503,11 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap)
                         i2c_del_driver)
 
 #endif /* I2C */
+
+#if IS_ENABLED(CONFIG_ACPI_I2C)
+extern void acpi_i2c_register_devices(struct i2c_adapter *adap);
+#else
+static inline void acpi_i2c_register_devices(struct i2c_adapter *adap) {}
+#endif
+
 #endif /* _LINUX_I2C_H */
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 5711e9525a2a..a9ded9a3c175 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -55,6 +55,7 @@ extern int platform_add_devices(struct platform_device **, int);
 
 struct platform_device_info {
                 struct device *parent;
+                struct acpi_dev_node acpi_node;
 
                 const char *name;
                 int id;