Merge branch 'acpi-driver-core' into device-properties

15 files changed, 59 insertions, 36 deletions

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 1284138e42ab..4bf75597f732 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -102,7 +102,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
 	pdevinfo.id = -1;
 	pdevinfo.res = resources;
 	pdevinfo.num_res = count;
-	pdevinfo.acpi_node.companion = adev;
+	pdevinfo.fwnode = acpi_fwnode_handle(adev);
 	pdevinfo.dma_mask = DMA_BIT_MASK(32);
 	pdev = platform_device_register_full(&pdevinfo);
 	if (IS_ERR(pdev))
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index d9339b442a4e..a688aa243f6c 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -615,7 +615,7 @@ void acpi_dock_add(struct acpi_device *adev)
 	memset(&pdevinfo, 0, sizeof(pdevinfo));
 	pdevinfo.name = "dock";
 	pdevinfo.id = dock_station_count;
-	pdevinfo.acpi_node.companion = adev;
+	pdevinfo.fwnode = acpi_fwnode_handle(adev);
 	pdevinfo.data = &ds;
 	pdevinfo.size_data = sizeof(ds);
 	dd = platform_device_register_full(&pdevinfo);
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index f774c65ecb8b..39c485b0c25c 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -168,7 +168,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev)
 	unsigned int node_id;
 	int retval = -EINVAL;
 
-	if (ACPI_COMPANION(dev)) {
+	if (has_acpi_companion(dev)) {
 		if (acpi_dev) {
 			dev_warn(dev, "ACPI companion already set\n");
 			return -EINVAL;
@@ -220,7 +220,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev)
 	list_add(&physical_node->node, physnode_list);
 	acpi_dev->physical_node_count++;
 
-	if (!ACPI_COMPANION(dev))
+	if (!has_acpi_companion(dev))
 		ACPI_COMPANION_SET(dev, acpi_dev);
 
 	acpi_physnode_link_name(physical_node_name, node_id);
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 9421fed40905..17f0204fabef 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -454,7 +454,7 @@ struct platform_device *platform_device_register_full(
 		goto err_alloc;
 
 	pdev->dev.parent = pdevinfo->parent;
-	ACPI_COMPANION_SET(&pdev->dev, pdevinfo->acpi_node.companion);
+	pdev->dev.fwnode = pdevinfo->fwnode;
 
 	if (pdevinfo->dma_mask) {
 		/*
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 550a5eafbd38..ab892be26dc2 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -17,6 +17,8 @@
 
 enum of_gpio_flags;
 
+struct acpi_device;
+
 /**
  * struct acpi_gpio_info - ACPI GPIO specific information
  * @gpioint: if %true this GPIO is of type GpioInt otherwise type is GpioIo
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index c270f5f9a8f9..538d6910b550 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -166,7 +166,7 @@ static int dw_i2c_probe(struct platform_device *pdev)
 	/* fast mode by default because of legacy reasons */
 	clk_freq = 400000;
 
-	if (ACPI_COMPANION(&pdev->dev)) {
+	if (has_acpi_companion(&pdev->dev)) {
 		dw_i2c_acpi_configure(pdev);
 	} else if (pdev->dev.of_node) {
 		of_property_read_u32(pdev->dev.of_node,
@@ -286,7 +286,7 @@ static int dw_i2c_remove(struct platform_device *pdev)
 	pm_runtime_put(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 
-	if (ACPI_COMPANION(&pdev->dev))
+	if (has_acpi_companion(&pdev->dev))
 		dw_i2c_acpi_unconfigure(pdev);
 
 	return 0;
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index edf274cabe81..c87c31387e2d 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -133,7 +133,7 @@ static acpi_status acpi_i2c_add_device(acpi_handle handle, u32 level,
 		return AE_OK;
 
 	memset(&info, 0, sizeof(info));
-	info.acpi_node.companion = adev;
+	info.fwnode = acpi_fwnode_handle(adev);
 	info.irq = -1;
 
 	INIT_LIST_HEAD(&resource_list);
@@ -971,7 +971,7 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
 	client->dev.bus = &i2c_bus_type;
 	client->dev.type = &i2c_client_type;
 	client->dev.of_node = info->of_node;
-	ACPI_COMPANION_SET(&client->dev, info->acpi_node.companion);
+	client->dev.fwnode = info->fwnode;
 
 	i2c_dev_set_name(adap, client);
 	status = device_register(&client->dev);
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index ae4c1a854e57..591b84331315 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -684,7 +684,7 @@ static struct intel_iommu *device_to_iommu(struct device *dev, u8 *bus, u8 *devf
 	if (dev_is_pci(dev)) {
 		pdev = to_pci_dev(dev);
 		segment = pci_domain_nr(pdev->bus);
-	} else if (ACPI_COMPANION(dev))
+	} else if (has_acpi_companion(dev))
 		dev = &ACPI_COMPANION(dev)->dev;
 
 	rcu_read_lock();
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 61e32ec1fc4d..dae2a16fe93f 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -386,7 +386,8 @@ static inline bool is_acpi_node(struct fwnode_handle *fwnode)
 
 static inline struct acpi_device *acpi_node(struct fwnode_handle *fwnode)
 {
-	return fwnode ? container_of(fwnode, struct acpi_device, fwnode) : NULL;
+	return is_acpi_node(fwnode) ?
+		container_of(fwnode, struct acpi_device, fwnode) : NULL;
 }
 
 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 24c7aa8b1d20..ec488d03b518 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -53,10 +53,16 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
 	return adev ? adev->handle : NULL;
 }
 
-#define ACPI_COMPANION(dev)		((dev)->acpi_node.companion)
-#define ACPI_COMPANION_SET(dev, adev)	ACPI_COMPANION(dev) = (adev)
+#define ACPI_COMPANION(dev)		acpi_node((dev)->fwnode)
+#define ACPI_COMPANION_SET(dev, adev)	(dev)->fwnode = (adev) ? \
+	acpi_fwnode_handle(adev) : NULL
 #define ACPI_HANDLE(dev)		acpi_device_handle(ACPI_COMPANION(dev))
 
+static inline bool has_acpi_companion(struct device *dev)
+{
+	return is_acpi_node(dev->fwnode);
+}
+
 static inline void acpi_preset_companion(struct device *dev,
 					 struct acpi_device *parent, u64 addr)
 {
@@ -471,6 +477,11 @@ static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
 	return NULL;
 }
 
+static inline bool has_acpi_companion(struct device *dev)
+{
+	return false;
+}
+
 static inline const char *acpi_dev_name(struct acpi_device *adev)
 {
 	return NULL;
diff --git a/include/linux/device.h b/include/linux/device.h
index 0eb8ee2dc6d1..badef20b876a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -38,6 +38,7 @@ struct class;
 struct subsys_private;
 struct bus_type;
 struct device_node;
+struct fwnode_handle;
 struct iommu_ops;
 struct iommu_group;
 
@@ -650,14 +651,6 @@ struct device_dma_parameters {
 	unsigned long segment_boundary_mask;
 };
 
-struct acpi_device;
-
-struct acpi_dev_node {
-#ifdef CONFIG_ACPI
-	struct acpi_device *companion;
-#endif
-};
-
 /**
  * struct device - The basic device structure
  * @parent:	The device's "parent" device, the device to which it is attached.
@@ -703,7 +696,7 @@ struct acpi_dev_node {
  * @cma_area:	Contiguous memory area for dma allocations
  * @archdata:	For arch-specific additions.
  * @of_node:	Associated device tree node.
- * @acpi_node:	Associated ACPI device node.
+ * @fwnode:	Associated device node supplied by platform firmware.
  * @devt:	For creating the sysfs "dev".
  * @id:		device instance
  * @devres_lock: Spinlock to protect the resource of the device.
@@ -779,7 +772,7 @@ 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 */
+	struct fwnode_handle	*fwnode; /* firmware device node */
 
 	dev_t			devt;	/* dev_t, creates the sysfs "dev" */
 	u32			id;	/* device instance */
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
new file mode 100644
index 000000000000..17bb5f039509
--- /dev/null
+++ b/include/linux/fwnode.h
@@ -0,0 +1,25 @@
+/*
+ * fwnode.h - Firmware device node object handle type definition.
+ *
+ * Copyright (C) 2015, Intel Corporation
+ * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_FWNODE_H_
+#define _LINUX_FWNODE_H_
+
+enum fwnode_type {
+	FWNODE_INVALID = 0,
+	FWNODE_OF,
+	FWNODE_ACPI,
+};
+
+struct fwnode_handle {
+	enum fwnode_type type;
+};
+
+#endif
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index f17da50402a4..6d89575361a8 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -278,7 +278,7 @@ static inline int i2c_slave_event(struct i2c_client *client,
  * @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
+ * @fwnode: device node supplied by the platform firmware
  * @irq: stored in i2c_client.irq
  *
  * I2C doesn't actually support hardware probing, although controllers and
@@ -299,7 +299,7 @@ struct i2c_board_info {
 	void		*platform_data;
 	struct dev_archdata	*archdata;
 	struct device_node *of_node;
-	struct acpi_dev_node acpi_node;
+	struct fwnode_handle *fwnode;
 	int		irq;
 };
 
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index ae4882ca4a64..58f1e75ba105 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -59,7 +59,7 @@ extern int platform_add_devices(struct platform_device **, int);
 
 struct platform_device_info {
 		struct device *parent;
-		struct acpi_dev_node acpi_node;
+		struct fwnode_handle *fwnode;
 
 		const char *name;
 		int id;
diff --git a/include/linux/property.h b/include/linux/property.h
index a6a3d98bd7e9..31dfd3db35d6 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -13,6 +13,7 @@
 #ifndef _LINUX_PROPERTY_H_
 #define _LINUX_PROPERTY_H_
 
+#include <linux/fwnode.h>
 #include <linux/types.h>
 
 struct device;
@@ -40,16 +41,6 @@ int device_property_read_string_array(struct device *dev, const char *propname,
 int device_property_read_string(struct device *dev, const char *propname,
 				const char **val);
 
-enum fwnode_type {
-	FWNODE_INVALID = 0,
-	FWNODE_OF,
-	FWNODE_ACPI,
-};
-
-struct fwnode_handle {
-	enum fwnode_type type;
-};
-
 bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname);
 int fwnode_property_read_u8_array(struct fwnode_handle *fwnode,
 				  const char *propname, u8 *val,