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Message-Id: <20240209164027.2582906-17-max.kellermann@ionos.com>
Date: Fri, 9 Feb 2024 17:40:08 +0100
From: Max Kellermann <max.kellermann@...os.com>
To: linux-kernel@...r.kernel.org
Cc: Max Kellermann <max.kellermann@...os.com>
Subject: [PATCH v2 16/35] device.h: move declarations to device_types.h
By providing declarations in a lean header, we can reduce header
dependencies.
Signed-off-by: Max Kellermann <max.kellermann@...os.com>
---
block/disk-events.c | 1 +
block/early-lookup.c | 1 +
block/partitions/core.c | 1 +
drivers/counter/counter-chrdev.c | 1 +
drivers/cxl/cxl.h | 1 +
drivers/devfreq/devfreq-event.c | 1 +
drivers/extcon/extcon.h | 2 +-
drivers/gpu/drm/mcde/mcde_clk_div.c | 1 +
.../gpu/drm/renesas/rcar-du/rcar_du_encoder.c | 1 +
.../drm/renesas/rcar-du/rcar_du_writeback.c | 2 +
drivers/gpu/drm/sun4i/sun4i_layer.c | 2 +
drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c | 1 +
drivers/gpu/drm/tidss/tidss_encoder.c | 1 +
drivers/gpu/drm/tidss/tidss_plane.c | 1 +
include/linux/acpi.h | 2 +-
include/linux/backlight.h | 2 +-
include/linux/blk_types.h | 2 +-
include/linux/blkdev.h | 2 +-
include/linux/container.h | 2 +-
include/linux/coresight.h | 2 +-
include/linux/counter.h | 2 +-
include/linux/devfreq-event.h | 2 +-
include/linux/devfreq.h | 2 +-
include/linux/device.h | 466 +---------------
include/linux/device_types.h | 501 ++++++++++++++++++
include/linux/dmaengine.h | 2 +-
include/linux/edac.h | 2 +-
include/linux/enclosure.h | 2 +-
include/linux/fpga/fpga-bridge.h | 2 +-
include/linux/fpga/fpga-region.h | 2 +-
include/linux/framer/framer.h | 2 +-
include/linux/hdmi.h | 2 +-
include/linux/hwmon-sysfs.h | 2 +-
include/linux/iio/iio.h | 2 +-
include/linux/lcd.h | 2 +-
include/linux/node.h | 2 +-
include/linux/peci.h | 2 +-
include/linux/pm_clock.h | 2 +-
include/linux/pm_domain.h | 2 +-
include/linux/pm_qos.h | 2 +-
include/linux/power_supply.h | 2 +-
include/linux/powercap.h | 2 +-
include/linux/rtc.h | 2 +-
include/linux/swiotlb.h | 3 +-
include/linux/thermal.h | 2 +-
include/linux/w1.h | 2 +-
include/media/cec.h | 2 +-
include/media/media-devnode.h | 2 +-
include/net/nfc/nfc.h | 2 +-
include/pcmcia/ss.h | 2 +-
include/scsi/scsi_device.h | 1 +
kernel/trace/blktrace.c | 1 +
52 files changed, 554 insertions(+), 501 deletions(-)
create mode 100644 include/linux/device_types.h
diff --git a/block/disk-events.c b/block/disk-events.c
index f9ec09799906..86b3a7b6ccdf 100644
--- a/block/disk-events.c
+++ b/block/disk-events.c
@@ -5,6 +5,7 @@
#include <linux/export.h>
#include <linux/moduleparam.h>
#include <linux/blkdev.h>
+#include <linux/device.h>
#include <linux/kobject.h>
#include "blk.h"
#include <linux/sprintf.h>
diff --git a/block/early-lookup.c b/block/early-lookup.c
index 0862a56c25ac..0bfb6b3fecf5 100644
--- a/block/early-lookup.c
+++ b/block/early-lookup.c
@@ -5,6 +5,7 @@
*/
#include <linux/blkdev.h>
#include <linux/ctype.h>
+#include <linux/device.h>
#include <linux/kstrtox.h>
#include <linux/sprintf.h>
diff --git a/block/partitions/core.c b/block/partitions/core.c
index b56add574054..576118154d57 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -9,6 +9,7 @@
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/ctype.h>
+#include <linux/device.h>
#include <linux/sprintf.h>
#include <linux/vmalloc.h>
#include <linux/raid/detect.h>
diff --git a/drivers/counter/counter-chrdev.c b/drivers/counter/counter-chrdev.c
index afc94d0062b1..7d3e44315c8c 100644
--- a/drivers/counter/counter-chrdev.c
+++ b/drivers/counter/counter-chrdev.c
@@ -5,6 +5,7 @@
*/
#include <linux/cdev.h>
#include <linux/counter.h>
+#include <linux/device.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/export.h>
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index 784bcd943215..0c4b2b3f6217 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -7,6 +7,7 @@
#include <linux/libnvdimm.h>
#include <linux/bitfield.h>
#include <linux/bitops.h>
+#include <linux/device_types.h>
#include <linux/device/driver.h>
#include <linux/log2.h>
#include <linux/node.h>
diff --git a/drivers/devfreq/devfreq-event.c b/drivers/devfreq/devfreq-event.c
index 649971baca70..48237648615a 100644
--- a/drivers/devfreq/devfreq-event.c
+++ b/drivers/devfreq/devfreq-event.c
@@ -9,6 +9,7 @@
*/
#include <linux/devfreq-event.h>
+#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/init.h>
diff --git a/drivers/extcon/extcon.h b/drivers/extcon/extcon.h
index b2e0f715d81c..1b850b2a06ac 100644
--- a/drivers/extcon/extcon.h
+++ b/drivers/extcon/extcon.h
@@ -2,7 +2,7 @@
#ifndef __LINUX_EXTCON_INTERNAL_H__
#define __LINUX_EXTCON_INTERNAL_H__
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/extcon-provider.h>
/**
diff --git a/drivers/gpu/drm/mcde/mcde_clk_div.c b/drivers/gpu/drm/mcde/mcde_clk_div.c
index 3056ac566473..ac90497d366a 100644
--- a/drivers/gpu/drm/mcde/mcde_clk_div.c
+++ b/drivers/gpu/drm/mcde/mcde_clk_div.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/clk-provider.h>
+#include <linux/device.h> // for devm_kzalloc()
#include <linux/io.h>
#include <linux/regulator/consumer.h>
diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_encoder.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_encoder.c
index 7ecec7b04a8d..18842d466b74 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_encoder.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_encoder.c
@@ -7,6 +7,7 @@
* Contact: Laurent Pinchart (laurent.pinchart@...asonboard.com)
*/
+#include <linux/device.h> // for dev_dbg()
#include <linux/export.h>
#include <linux/of.h>
diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
index 8cd37d7b8ae2..0fb49db3a5b6 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
@@ -13,6 +13,8 @@
#include <drm/drm_probe_helper.h>
#include <drm/drm_writeback.h>
+#include <linux/device.h> // for dev_dbg()
+
#include "rcar_du_crtc.h"
#include "rcar_du_drv.h"
#include "rcar_du_kms.h"
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index 98f3176366c0..77517fda1eda 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -11,6 +11,8 @@
#include <drm/drm_blend.h>
#include <drm/drm_gem_atomic_helper.h>
+#include <linux/device.h> // for devm_kzalloc()
+
#include "sun4i_backend.h"
#include "sun4i_frontend.h"
#include "sun4i_layer.h"
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c b/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c
index 03d7de1911cd..e27219f38e80 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon_dclk.c
@@ -7,6 +7,7 @@
*/
#include <linux/clk-provider.h>
+#include <linux/device.h> // for devm_kzalloc()
#include <linux/regmap.h>
#include "sun4i_tcon.h"
diff --git a/drivers/gpu/drm/tidss/tidss_encoder.c b/drivers/gpu/drm/tidss/tidss_encoder.c
index 17a86bed8054..c002c07f262e 100644
--- a/drivers/gpu/drm/tidss/tidss_encoder.c
+++ b/drivers/gpu/drm/tidss/tidss_encoder.c
@@ -4,6 +4,7 @@
* Author: Tomi Valkeinen <tomi.valkeinen@...com>
*/
+#include <linux/device.h> // for dev_dbg()
#include <linux/export.h>
#include <drm/drm_atomic_helper.h>
diff --git a/drivers/gpu/drm/tidss/tidss_plane.c b/drivers/gpu/drm/tidss/tidss_plane.c
index 2d9cc2b12cc6..13aac5a6ec21 100644
--- a/drivers/gpu/drm/tidss/tidss_plane.c
+++ b/drivers/gpu/drm/tidss/tidss_plane.c
@@ -11,6 +11,7 @@
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_atomic_helper.h>
+#include <linux/device.h> // for dev_dbg()
#include <linux/device.h> // for dev_dbg()
#include <linux/slab.h>
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 3beab76d31d4..9f0a021dfef3 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -11,7 +11,7 @@
#include <linux/errno.h>
#include <linux/ioport.h> /* for struct resource */
#include <linux/resource_ext.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/mod_devicetable.h>
#include <linux/property.h>
#include <linux/uuid.h>
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 614653e07e3a..9164ee5f1c8b 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -9,7 +9,7 @@
#ifndef _LINUX_BACKLIGHT_H
#define _LINUX_BACKLIGHT_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/fb.h>
#include <linux/mutex.h>
#include <linux/notifier.h>
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 9d2d8a8328a6..96a37f399928 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -8,7 +8,7 @@
#include <linux/types.h>
#include <linux/bvec_types.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/ktime.h>
struct bio_set;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 2a8df9c0e87b..7e1fc101a5c3 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -8,7 +8,7 @@
#include <linux/types.h>
#include <linux/fs.h> // for inode_unhashed()
#include <linux/blk_types.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/list.h>
#include <linux/minmax.h>
#include <linux/timer_types.h>
diff --git a/include/linux/container.h b/include/linux/container.h
index dd00cc918a92..a90e59f0c65d 100644
--- a/include/linux/container.h
+++ b/include/linux/container.h
@@ -9,7 +9,7 @@
#ifndef _LINUX_CONTAINER_H
#define _LINUX_CONTAINER_H
-#include <linux/device.h>
+#include <linux/device_types.h>
/* drivers/base/power/container.c */
extern const struct bus_type container_subsys;
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index a4cb7dd6ca23..fce16528de85 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -8,7 +8,7 @@
#include <linux/amba/bus.h>
#include <linux/clk.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/io.h>
#include <linux/perf_event.h>
#include <linux/sched.h>
diff --git a/include/linux/counter.h b/include/linux/counter.h
index 638ebb5b4d27..95e8067f4b78 100644
--- a/include/linux/counter.h
+++ b/include/linux/counter.h
@@ -7,7 +7,7 @@
#define _COUNTER_H_
#include <linux/cdev.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/kernel.h>
#include <linux/kfifo.h>
#include <linux/mutex_types.h>
diff --git a/include/linux/devfreq-event.h b/include/linux/devfreq-event.h
index 4a50a5c71a5f..36f0e6cf7cc5 100644
--- a/include/linux/devfreq-event.h
+++ b/include/linux/devfreq-event.h
@@ -9,7 +9,7 @@
#ifndef __LINUX_DEVFREQ_EVENT_H__
#define __LINUX_DEVFREQ_EVENT_H__
-#include <linux/device.h>
+#include <linux/device_types.h>
/**
* struct devfreq_event_dev - the devfreq-event device
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index d312ffbac4dd..bf8d30af9fa2 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -10,7 +10,7 @@
#ifndef __LINUX_DEVFREQ_H__
#define __LINUX_DEVFREQ_H__
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/notifier.h>
#include <linux/pm_opp.h>
#include <linux/pm_qos.h>
diff --git a/include/linux/device.h b/include/linux/device.h
index 3e221c132d89..56735ece2ada 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -12,6 +12,7 @@
#ifndef _DEVICE_H_
#define _DEVICE_H_
+#include <linux/device_types.h>
#include <linux/dev_printk.h>
#include <linux/energy_model.h>
#include <linux/ioport.h>
@@ -30,7 +31,6 @@
#include <linux/device/driver.h>
#include <linux/cleanup.h>
#include <linux/sysfs.h> // for __ATTR_*
-#include <asm/device.h>
struct device;
struct device_private;
@@ -46,27 +46,6 @@ struct dev_pin_info;
struct dev_iommu;
struct msi_device_data;
-/**
- * struct subsys_interface - interfaces to device functions
- * @name: name of the device function
- * @subsys: subsystem of the devices to attach to
- * @node: the list of functions registered at the subsystem
- * @add_dev: device hookup to device function handler
- * @remove_dev: device hookup to device function handler
- *
- * Simple interfaces attached to a subsystem. Multiple interfaces can
- * attach to a subsystem and its devices. Unlike drivers, they do not
- * exclusively claim or control devices. Interfaces usually represent
- * a specific functionality of a subsystem/class of devices.
- */
-struct subsys_interface {
- const char *name;
- const struct bus_type *subsys;
- struct list_head node;
- int (*add_dev)(struct device *dev, struct subsys_interface *sif);
- void (*remove_dev)(struct device *dev, struct subsys_interface *sif);
-};
-
int subsys_interface_register(struct subsys_interface *sif);
void subsys_interface_unregister(struct subsys_interface *sif);
@@ -75,50 +54,6 @@ int subsys_system_register(const struct bus_type *subsys,
int subsys_virtual_register(const struct bus_type *subsys,
const struct attribute_group **groups);
-/*
- * The type of device, "struct device" is embedded in. A class
- * or bus can contain devices of different types
- * like "partitions" and "disks", "mouse" and "event".
- * This identifies the device type and carries type-specific
- * information, equivalent to the kobj_type of a kobject.
- * If "name" is specified, the uevent will contain it in
- * the DEVTYPE variable.
- */
-struct device_type {
- const char *name;
- const struct attribute_group **groups;
- int (*uevent)(const struct device *dev, struct kobj_uevent_env *env);
- char *(*devnode)(const struct device *dev, umode_t *mode,
- kuid_t *uid, kgid_t *gid);
- void (*release)(struct device *dev);
-
- const struct dev_pm_ops *pm;
-};
-
-/**
- * struct device_attribute - Interface for exporting device attributes.
- * @attr: sysfs attribute definition.
- * @show: Show handler.
- * @store: Store handler.
- */
-struct device_attribute {
- struct attribute attr;
- ssize_t (*show)(struct device *dev, struct device_attribute *attr,
- char *buf);
- ssize_t (*store)(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count);
-};
-
-/**
- * struct dev_ext_attribute - Exported device attribute with extra context.
- * @attr: Exported device attribute.
- * @var: Pointer to context.
- */
-struct dev_ext_attribute {
- struct device_attribute attr;
- void *var;
-};
-
ssize_t device_show_ulong(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t device_store_ulong(struct device *dev, struct device_attribute *attr,
@@ -423,34 +358,6 @@ void __percpu *__devm_alloc_percpu(struct device *dev, size_t size,
size_t align);
void devm_free_percpu(struct device *dev, void __percpu *pdata);
-struct device_dma_parameters {
- /*
- * a low level driver may set these to teach IOMMU code about
- * sg limitations.
- */
- unsigned int max_segment_size;
- unsigned int min_align_mask;
- unsigned long segment_boundary_mask;
-};
-
-/**
- * enum device_link_state - Device link states.
- * @DL_STATE_NONE: The presence of the drivers is not being tracked.
- * @DL_STATE_DORMANT: None of the supplier/consumer drivers is present.
- * @DL_STATE_AVAILABLE: The supplier driver is present, but the consumer is not.
- * @DL_STATE_CONSUMER_PROBE: The consumer is probing (supplier driver present).
- * @DL_STATE_ACTIVE: Both the supplier and consumer drivers are present.
- * @DL_STATE_SUPPLIER_UNBIND: The supplier driver is unbinding.
- */
-enum device_link_state {
- DL_STATE_NONE = -1,
- DL_STATE_DORMANT = 0,
- DL_STATE_AVAILABLE,
- DL_STATE_CONSUMER_PROBE,
- DL_STATE_ACTIVE,
- DL_STATE_SUPPLIER_UNBIND,
-};
-
/*
* Device link flags.
*
@@ -475,363 +382,6 @@ enum device_link_state {
#define DL_FLAG_INFERRED BIT(8)
#define DL_FLAG_CYCLE BIT(9)
-/**
- * enum dl_dev_state - Device driver presence tracking information.
- * @DL_DEV_NO_DRIVER: There is no driver attached to the device.
- * @DL_DEV_PROBING: A driver is probing.
- * @DL_DEV_DRIVER_BOUND: The driver has been bound to the device.
- * @DL_DEV_UNBINDING: The driver is unbinding from the device.
- */
-enum dl_dev_state {
- DL_DEV_NO_DRIVER = 0,
- DL_DEV_PROBING,
- DL_DEV_DRIVER_BOUND,
- DL_DEV_UNBINDING,
-};
-
-/**
- * enum device_removable - Whether the device is removable. The criteria for a
- * device to be classified as removable is determined by its subsystem or bus.
- * @DEVICE_REMOVABLE_NOT_SUPPORTED: This attribute is not supported for this
- * device (default).
- * @DEVICE_REMOVABLE_UNKNOWN: Device location is Unknown.
- * @DEVICE_FIXED: Device is not removable by the user.
- * @DEVICE_REMOVABLE: Device is removable by the user.
- */
-enum device_removable {
- DEVICE_REMOVABLE_NOT_SUPPORTED = 0, /* must be 0 */
- DEVICE_REMOVABLE_UNKNOWN,
- DEVICE_FIXED,
- DEVICE_REMOVABLE,
-};
-
-/**
- * struct dev_links_info - Device data related to device links.
- * @suppliers: List of links to supplier devices.
- * @consumers: List of links to consumer devices.
- * @defer_sync: Hook to global list of devices that have deferred sync_state.
- * @status: Driver status information.
- */
-struct dev_links_info {
- struct list_head suppliers;
- struct list_head consumers;
- struct list_head defer_sync;
- enum dl_dev_state status;
-};
-
-/**
- * struct dev_msi_info - Device data related to MSI
- * @domain: The MSI interrupt domain associated to the device
- * @data: Pointer to MSI device data
- */
-struct dev_msi_info {
-#ifdef CONFIG_GENERIC_MSI_IRQ
- struct irq_domain *domain;
- struct msi_device_data *data;
-#endif
-};
-
-/**
- * enum device_physical_location_panel - Describes which panel surface of the
- * system's housing the device connection point resides on.
- * @DEVICE_PANEL_TOP: Device connection point is on the top panel.
- * @DEVICE_PANEL_BOTTOM: Device connection point is on the bottom panel.
- * @DEVICE_PANEL_LEFT: Device connection point is on the left panel.
- * @DEVICE_PANEL_RIGHT: Device connection point is on the right panel.
- * @DEVICE_PANEL_FRONT: Device connection point is on the front panel.
- * @DEVICE_PANEL_BACK: Device connection point is on the back panel.
- * @DEVICE_PANEL_UNKNOWN: The panel with device connection point is unknown.
- */
-enum device_physical_location_panel {
- DEVICE_PANEL_TOP,
- DEVICE_PANEL_BOTTOM,
- DEVICE_PANEL_LEFT,
- DEVICE_PANEL_RIGHT,
- DEVICE_PANEL_FRONT,
- DEVICE_PANEL_BACK,
- DEVICE_PANEL_UNKNOWN,
-};
-
-/**
- * enum device_physical_location_vertical_position - Describes vertical
- * position of the device connection point on the panel surface.
- * @DEVICE_VERT_POS_UPPER: Device connection point is at upper part of panel.
- * @DEVICE_VERT_POS_CENTER: Device connection point is at center part of panel.
- * @DEVICE_VERT_POS_LOWER: Device connection point is at lower part of panel.
- */
-enum device_physical_location_vertical_position {
- DEVICE_VERT_POS_UPPER,
- DEVICE_VERT_POS_CENTER,
- DEVICE_VERT_POS_LOWER,
-};
-
-/**
- * enum device_physical_location_horizontal_position - Describes horizontal
- * position of the device connection point on the panel surface.
- * @DEVICE_HORI_POS_LEFT: Device connection point is at left part of panel.
- * @DEVICE_HORI_POS_CENTER: Device connection point is at center part of panel.
- * @DEVICE_HORI_POS_RIGHT: Device connection point is at right part of panel.
- */
-enum device_physical_location_horizontal_position {
- DEVICE_HORI_POS_LEFT,
- DEVICE_HORI_POS_CENTER,
- DEVICE_HORI_POS_RIGHT,
-};
-
-/**
- * struct device_physical_location - Device data related to physical location
- * of the device connection point.
- * @panel: Panel surface of the system's housing that the device connection
- * point resides on.
- * @vertical_position: Vertical position of the device connection point within
- * the panel.
- * @horizontal_position: Horizontal position of the device connection point
- * within the panel.
- * @dock: Set if the device connection point resides in a docking station or
- * port replicator.
- * @lid: Set if this device connection point resides on the lid of laptop
- * system.
- */
-struct device_physical_location {
- enum device_physical_location_panel panel;
- enum device_physical_location_vertical_position vertical_position;
- enum device_physical_location_horizontal_position horizontal_position;
- bool dock;
- bool lid;
-};
-
-/**
- * struct device - The basic device structure
- * @parent: The device's "parent" device, the device to which it is attached.
- * In most cases, a parent device is some sort of bus or host
- * controller. If parent is NULL, the device, is a top-level device,
- * which is not usually what you want.
- * @p: Holds the private data of the driver core portions of the device.
- * See the comment of the struct device_private for detail.
- * @kobj: A top-level, abstract class from which other classes are derived.
- * @init_name: Initial name of the device.
- * @type: The type of device.
- * This identifies the device type and carries type-specific
- * information.
- * @mutex: Mutex to synchronize calls to its driver.
- * @bus: Type of bus device is on.
- * @driver: Which driver has allocated this
- * @platform_data: Platform data specific to the device.
- * Example: For devices on custom boards, as typical of embedded
- * and SOC based hardware, Linux often uses platform_data to point
- * to board-specific structures describing devices and how they
- * are wired. That can include what ports are available, chip
- * variants, which GPIO pins act in what additional roles, and so
- * on. This shrinks the "Board Support Packages" (BSPs) and
- * minimizes board-specific #ifdefs in drivers.
- * @driver_data: Private pointer for driver specific info.
- * @links: Links to suppliers and consumers of this device.
- * @power: For device power management.
- * See Documentation/driver-api/pm/devices.rst for details.
- * @pm_domain: Provide callbacks that are executed during system suspend,
- * hibernation, system resume and during runtime PM transitions
- * along with subsystem-level and driver-level callbacks.
- * @em_pd: device's energy model performance domain
- * @pins: For device pin management.
- * See Documentation/driver-api/pin-control.rst for details.
- * @msi: MSI related data
- * @numa_node: NUMA node this device is close to.
- * @dma_ops: DMA mapping operations for this device.
- * @dma_mask: Dma mask (if dma'ble device).
- * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all
- * hardware supports 64-bit addresses for consistent allocations
- * such descriptors.
- * @bus_dma_limit: Limit of an upstream bridge or bus which imposes a smaller
- * DMA limit than the device itself supports.
- * @dma_range_map: map for DMA memory ranges relative to that of RAM
- * @dma_parms: A low level driver may set these to teach IOMMU code about
- * segment limitations.
- * @dma_pools: Dma pools (if dma'ble device).
- * @dma_mem: Internal for coherent mem override.
- * @cma_area: Contiguous memory area for dma allocations
- * @dma_io_tlb_mem: Software IO TLB allocator. Not for driver use.
- * @dma_io_tlb_pools: List of transient swiotlb memory pools.
- * @dma_io_tlb_lock: Protects changes to the list of active pools.
- * @dma_uses_io_tlb: %true if device has used the software IO TLB.
- * @archdata: For arch-specific additions.
- * @of_node: Associated device tree 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.
- * @devres_head: The resources list of the device.
- * @class: The class of the device.
- * @groups: Optional attribute groups.
- * @release: Callback to free the device after all references have
- * gone away. This should be set by the allocator of the
- * device (i.e. the bus driver that discovered the device).
- * @iommu_group: IOMMU group the device belongs to.
- * @iommu: Per device generic IOMMU runtime data
- * @physical_location: Describes physical location of the device connection
- * point in the system housing.
- * @removable: Whether the device can be removed from the system. This
- * should be set by the subsystem / bus driver that discovered
- * the device.
- *
- * @offline_disabled: If set, the device is permanently online.
- * @offline: Set after successful invocation of bus type's .offline().
- * @of_node_reused: Set if the device-tree node is shared with an ancestor
- * device.
- * @state_synced: The hardware state of this device has been synced to match
- * the software state of this device by calling the driver/bus
- * sync_state() callback.
- * @can_match: The device has matched with a driver at least once or it is in
- * a bus (like AMBA) which can't check for matching drivers until
- * other devices probe successfully.
- * @dma_coherent: this particular device is dma coherent, even if the
- * architecture supports non-coherent devices.
- * @dma_ops_bypass: If set to %true then the dma_ops are bypassed for the
- * streaming DMA operations (->map_* / ->unmap_* / ->sync_*),
- * and optionall (if the coherent mask is large enough) also
- * for dma allocations. This flag is managed by the dma ops
- * instance from ->dma_supported.
- *
- * At the lowest level, every device in a Linux system is represented by an
- * instance of struct device. The device structure contains the information
- * that the device model core needs to model the system. Most subsystems,
- * however, track additional information about the devices they host. As a
- * result, it is rare for devices to be represented by bare device structures;
- * instead, that structure, like kobject structures, is usually embedded within
- * a higher-level representation of the device.
- */
-struct device {
- struct kobject kobj;
- struct device *parent;
-
- struct device_private *p;
-
- const char *init_name; /* initial name of the device */
- const struct device_type *type;
-
- const struct bus_type *bus; /* type of bus device is on */
- struct device_driver *driver; /* which driver has allocated this
- device */
- void *platform_data; /* Platform specific data, device
- core doesn't touch it */
- void *driver_data; /* Driver data, set and get with
- dev_set_drvdata/dev_get_drvdata */
- struct mutex mutex; /* mutex to synchronize calls to
- * its driver.
- */
-
- struct dev_links_info links;
- struct dev_pm_info power;
- struct dev_pm_domain *pm_domain;
-
-#ifdef CONFIG_ENERGY_MODEL
- struct em_perf_domain *em_pd;
-#endif
-
-#ifdef CONFIG_PINCTRL
- struct dev_pin_info *pins;
-#endif
- struct dev_msi_info msi;
-#ifdef CONFIG_DMA_OPS
- const struct dma_map_ops *dma_ops;
-#endif
- u64 *dma_mask; /* dma mask (if dma'able device) */
- u64 coherent_dma_mask;/* Like dma_mask, but for
- alloc_coherent mappings as
- not all hardware supports
- 64 bit addresses for consistent
- allocations such descriptors. */
- u64 bus_dma_limit; /* upstream dma constraint */
- const struct bus_dma_region *dma_range_map;
-
- struct device_dma_parameters *dma_parms;
-
- struct list_head dma_pools; /* dma pools (if dma'ble) */
-
-#ifdef CONFIG_DMA_DECLARE_COHERENT
- struct dma_coherent_mem *dma_mem; /* internal for coherent mem
- override */
-#endif
-#ifdef CONFIG_DMA_CMA
- struct cma *cma_area; /* contiguous memory area for dma
- allocations */
-#endif
-#ifdef CONFIG_SWIOTLB
- struct io_tlb_mem *dma_io_tlb_mem;
-#endif
-#ifdef CONFIG_SWIOTLB_DYNAMIC
- struct list_head dma_io_tlb_pools;
- spinlock_t dma_io_tlb_lock;
- bool dma_uses_io_tlb;
-#endif
- /* arch specific additions */
- struct dev_archdata archdata;
-
- struct device_node *of_node; /* associated device tree node */
- struct fwnode_handle *fwnode; /* firmware device node */
-
-#ifdef CONFIG_NUMA
- int numa_node; /* NUMA node this device is close to */
-#endif
- dev_t devt; /* dev_t, creates the sysfs "dev" */
- u32 id; /* device instance */
-
- spinlock_t devres_lock;
- struct list_head devres_head;
-
- const struct class *class;
- const struct attribute_group **groups; /* optional groups */
-
- void (*release)(struct device *dev);
- struct iommu_group *iommu_group;
- struct dev_iommu *iommu;
-
- struct device_physical_location *physical_location;
-
- enum device_removable removable;
-
- bool offline_disabled:1;
- bool offline:1;
- bool of_node_reused:1;
- bool state_synced:1;
- bool can_match:1;
-#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
- defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
- defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
- bool dma_coherent:1;
-#endif
-#ifdef CONFIG_DMA_OPS_BYPASS
- bool dma_ops_bypass : 1;
-#endif
-};
-
-/**
- * struct device_link - Device link representation.
- * @supplier: The device on the supplier end of the link.
- * @s_node: Hook to the supplier device's list of links to consumers.
- * @consumer: The device on the consumer end of the link.
- * @c_node: Hook to the consumer device's list of links to suppliers.
- * @link_dev: device used to expose link details in sysfs
- * @status: The state of the link (with respect to the presence of drivers).
- * @flags: Link flags.
- * @rpm_active: Whether or not the consumer device is runtime-PM-active.
- * @kref: Count repeated addition of the same link.
- * @rm_work: Work structure used for removing the link.
- * @supplier_preactivated: Supplier has been made active before consumer probe.
- */
-struct device_link {
- struct device *supplier;
- struct list_head s_node;
- struct device *consumer;
- struct list_head c_node;
- struct device link_dev;
- enum device_link_state status;
- u32 flags;
- refcount_t rpm_active;
- struct kref kref;
- struct work_struct rm_work;
- bool supplier_preactivated; /* Owned by consumer probe. */
-};
-
#define kobj_to_dev(__kobj) container_of_const(__kobj, struct device, kobj)
/**
@@ -847,20 +397,6 @@ static inline bool device_iommu_mapped(struct device *dev)
/* Get the wakeup routines, which depend on struct device */
#include <linux/pm_wakeup.h>
-/**
- * dev_name - Return a device's name.
- * @dev: Device with name to get.
- * Return: The kobject name of the device, or its initial name if unavailable.
- */
-static inline const char *dev_name(const struct device *dev)
-{
- /* Use the init name until the kobject becomes available */
- if (dev->init_name)
- return dev->init_name;
-
- return kobject_name(&dev->kobj);
-}
-
/**
* dev_bus_name - Return a device's bus/class name, if at all possible
* @dev: struct device to get the bus/class name of
diff --git a/include/linux/device_types.h b/include/linux/device_types.h
new file mode 100644
index 000000000000..ead555b00c11
--- /dev/null
+++ b/include/linux/device_types.h
@@ -0,0 +1,501 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * device.h - generic, centralized driver model
+ *
+ * Copyright (c) 2001-2003 Patrick Mochel <mochel@...l.org>
+ * Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@...e.de>
+ * Copyright (c) 2008-2009 Novell Inc.
+ *
+ * See Documentation/driver-api/driver-model/ for more information.
+ */
+
+#ifndef _DEVICE_TYPES_H_
+#define _DEVICE_TYPES_H_
+
+#include <linux/kobject_types.h>
+#include <linux/mutex_types.h>
+#include <linux/pm.h>
+#include <linux/sysfs_types.h>
+#include <linux/uidgid_types.h>
+#include <asm/device.h>
+
+struct device;
+struct device_private;
+struct device_driver;
+struct driver_private;
+struct module;
+struct class;
+struct subsys_private;
+struct device_node;
+struct fwnode_handle;
+struct iommu_group;
+struct dev_pin_info;
+struct dev_iommu;
+struct msi_device_data;
+struct kobj_uevent_env;
+
+/**
+ * struct subsys_interface - interfaces to device functions
+ * @name: name of the device function
+ * @subsys: subsystem of the devices to attach to
+ * @node: the list of functions registered at the subsystem
+ * @add_dev: device hookup to device function handler
+ * @remove_dev: device hookup to device function handler
+ *
+ * Simple interfaces attached to a subsystem. Multiple interfaces can
+ * attach to a subsystem and its devices. Unlike drivers, they do not
+ * exclusively claim or control devices. Interfaces usually represent
+ * a specific functionality of a subsystem/class of devices.
+ */
+struct subsys_interface {
+ const char *name;
+ const struct bus_type *subsys;
+ struct list_head node;
+ int (*add_dev)(struct device *dev, struct subsys_interface *sif);
+ void (*remove_dev)(struct device *dev, struct subsys_interface *sif);
+};
+
+/*
+ * The type of device, "struct device" is embedded in. A class
+ * or bus can contain devices of different types
+ * like "partitions" and "disks", "mouse" and "event".
+ * This identifies the device type and carries type-specific
+ * information, equivalent to the kobj_type of a kobject.
+ * If "name" is specified, the uevent will contain it in
+ * the DEVTYPE variable.
+ */
+struct device_type {
+ const char *name;
+ const struct attribute_group **groups;
+ int (*uevent)(const struct device *dev, struct kobj_uevent_env *env);
+ char *(*devnode)(const struct device *dev, umode_t *mode,
+ kuid_t *uid, kgid_t *gid);
+ void (*release)(struct device *dev);
+
+ const struct dev_pm_ops *pm;
+};
+
+/**
+ * struct device_attribute - Interface for exporting device attributes.
+ * @attr: sysfs attribute definition.
+ * @show: Show handler.
+ * @store: Store handler.
+ */
+struct device_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct device *dev, struct device_attribute *attr,
+ char *buf);
+ ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count);
+};
+
+/**
+ * struct dev_ext_attribute - Exported device attribute with extra context.
+ * @attr: Exported device attribute.
+ * @var: Pointer to context.
+ */
+struct dev_ext_attribute {
+ struct device_attribute attr;
+ void *var;
+};
+
+struct device_dma_parameters {
+ /*
+ * a low level driver may set these to teach IOMMU code about
+ * sg limitations.
+ */
+ unsigned int max_segment_size;
+ unsigned int min_align_mask;
+ unsigned long segment_boundary_mask;
+};
+
+/**
+ * enum device_link_state - Device link states.
+ * @DL_STATE_NONE: The presence of the drivers is not being tracked.
+ * @DL_STATE_DORMANT: None of the supplier/consumer drivers is present.
+ * @DL_STATE_AVAILABLE: The supplier driver is present, but the consumer is not.
+ * @DL_STATE_CONSUMER_PROBE: The consumer is probing (supplier driver present).
+ * @DL_STATE_ACTIVE: Both the supplier and consumer drivers are present.
+ * @DL_STATE_SUPPLIER_UNBIND: The supplier driver is unbinding.
+ */
+enum device_link_state {
+ DL_STATE_NONE = -1,
+ DL_STATE_DORMANT = 0,
+ DL_STATE_AVAILABLE,
+ DL_STATE_CONSUMER_PROBE,
+ DL_STATE_ACTIVE,
+ DL_STATE_SUPPLIER_UNBIND,
+};
+
+/**
+ * enum dl_dev_state - Device driver presence tracking information.
+ * @DL_DEV_NO_DRIVER: There is no driver attached to the device.
+ * @DL_DEV_PROBING: A driver is probing.
+ * @DL_DEV_DRIVER_BOUND: The driver has been bound to the device.
+ * @DL_DEV_UNBINDING: The driver is unbinding from the device.
+ */
+enum dl_dev_state {
+ DL_DEV_NO_DRIVER = 0,
+ DL_DEV_PROBING,
+ DL_DEV_DRIVER_BOUND,
+ DL_DEV_UNBINDING,
+};
+
+/**
+ * enum device_removable - Whether the device is removable. The criteria for a
+ * device to be classified as removable is determined by its subsystem or bus.
+ * @DEVICE_REMOVABLE_NOT_SUPPORTED: This attribute is not supported for this
+ * device (default).
+ * @DEVICE_REMOVABLE_UNKNOWN: Device location is Unknown.
+ * @DEVICE_FIXED: Device is not removable by the user.
+ * @DEVICE_REMOVABLE: Device is removable by the user.
+ */
+enum device_removable {
+ DEVICE_REMOVABLE_NOT_SUPPORTED = 0, /* must be 0 */
+ DEVICE_REMOVABLE_UNKNOWN,
+ DEVICE_FIXED,
+ DEVICE_REMOVABLE,
+};
+
+/**
+ * struct dev_links_info - Device data related to device links.
+ * @suppliers: List of links to supplier devices.
+ * @consumers: List of links to consumer devices.
+ * @defer_sync: Hook to global list of devices that have deferred sync_state.
+ * @status: Driver status information.
+ */
+struct dev_links_info {
+ struct list_head suppliers;
+ struct list_head consumers;
+ struct list_head defer_sync;
+ enum dl_dev_state status;
+};
+
+/**
+ * struct dev_msi_info - Device data related to MSI
+ * @domain: The MSI interrupt domain associated to the device
+ * @data: Pointer to MSI device data
+ */
+struct dev_msi_info {
+#ifdef CONFIG_GENERIC_MSI_IRQ
+ struct irq_domain *domain;
+ struct msi_device_data *data;
+#endif
+};
+
+/**
+ * enum device_physical_location_panel - Describes which panel surface of the
+ * system's housing the device connection point resides on.
+ * @DEVICE_PANEL_TOP: Device connection point is on the top panel.
+ * @DEVICE_PANEL_BOTTOM: Device connection point is on the bottom panel.
+ * @DEVICE_PANEL_LEFT: Device connection point is on the left panel.
+ * @DEVICE_PANEL_RIGHT: Device connection point is on the right panel.
+ * @DEVICE_PANEL_FRONT: Device connection point is on the front panel.
+ * @DEVICE_PANEL_BACK: Device connection point is on the back panel.
+ * @DEVICE_PANEL_UNKNOWN: The panel with device connection point is unknown.
+ */
+enum device_physical_location_panel {
+ DEVICE_PANEL_TOP,
+ DEVICE_PANEL_BOTTOM,
+ DEVICE_PANEL_LEFT,
+ DEVICE_PANEL_RIGHT,
+ DEVICE_PANEL_FRONT,
+ DEVICE_PANEL_BACK,
+ DEVICE_PANEL_UNKNOWN,
+};
+
+/**
+ * enum device_physical_location_vertical_position - Describes vertical
+ * position of the device connection point on the panel surface.
+ * @DEVICE_VERT_POS_UPPER: Device connection point is at upper part of panel.
+ * @DEVICE_VERT_POS_CENTER: Device connection point is at center part of panel.
+ * @DEVICE_VERT_POS_LOWER: Device connection point is at lower part of panel.
+ */
+enum device_physical_location_vertical_position {
+ DEVICE_VERT_POS_UPPER,
+ DEVICE_VERT_POS_CENTER,
+ DEVICE_VERT_POS_LOWER,
+};
+
+/**
+ * enum device_physical_location_horizontal_position - Describes horizontal
+ * position of the device connection point on the panel surface.
+ * @DEVICE_HORI_POS_LEFT: Device connection point is at left part of panel.
+ * @DEVICE_HORI_POS_CENTER: Device connection point is at center part of panel.
+ * @DEVICE_HORI_POS_RIGHT: Device connection point is at right part of panel.
+ */
+enum device_physical_location_horizontal_position {
+ DEVICE_HORI_POS_LEFT,
+ DEVICE_HORI_POS_CENTER,
+ DEVICE_HORI_POS_RIGHT,
+};
+
+/**
+ * struct device_physical_location - Device data related to physical location
+ * of the device connection point.
+ * @panel: Panel surface of the system's housing that the device connection
+ * point resides on.
+ * @vertical_position: Vertical position of the device connection point within
+ * the panel.
+ * @horizontal_position: Horizontal position of the device connection point
+ * within the panel.
+ * @dock: Set if the device connection point resides in a docking station or
+ * port replicator.
+ * @lid: Set if this device connection point resides on the lid of laptop
+ * system.
+ */
+struct device_physical_location {
+ enum device_physical_location_panel panel;
+ enum device_physical_location_vertical_position vertical_position;
+ enum device_physical_location_horizontal_position horizontal_position;
+ bool dock;
+ bool lid;
+};
+
+/**
+ * struct device - The basic device structure
+ * @parent: The device's "parent" device, the device to which it is attached.
+ * In most cases, a parent device is some sort of bus or host
+ * controller. If parent is NULL, the device, is a top-level device,
+ * which is not usually what you want.
+ * @p: Holds the private data of the driver core portions of the device.
+ * See the comment of the struct device_private for detail.
+ * @kobj: A top-level, abstract class from which other classes are derived.
+ * @init_name: Initial name of the device.
+ * @type: The type of device.
+ * This identifies the device type and carries type-specific
+ * information.
+ * @mutex: Mutex to synchronize calls to its driver.
+ * @bus: Type of bus device is on.
+ * @driver: Which driver has allocated this
+ * @platform_data: Platform data specific to the device.
+ * Example: For devices on custom boards, as typical of embedded
+ * and SOC based hardware, Linux often uses platform_data to point
+ * to board-specific structures describing devices and how they
+ * are wired. That can include what ports are available, chip
+ * variants, which GPIO pins act in what additional roles, and so
+ * on. This shrinks the "Board Support Packages" (BSPs) and
+ * minimizes board-specific #ifdefs in drivers.
+ * @driver_data: Private pointer for driver specific info.
+ * @links: Links to suppliers and consumers of this device.
+ * @power: For device power management.
+ * See Documentation/driver-api/pm/devices.rst for details.
+ * @pm_domain: Provide callbacks that are executed during system suspend,
+ * hibernation, system resume and during runtime PM transitions
+ * along with subsystem-level and driver-level callbacks.
+ * @em_pd: device's energy model performance domain
+ * @pins: For device pin management.
+ * See Documentation/driver-api/pin-control.rst for details.
+ * @msi: MSI related data
+ * @numa_node: NUMA node this device is close to.
+ * @dma_ops: DMA mapping operations for this device.
+ * @dma_mask: Dma mask (if dma'ble device).
+ * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all
+ * hardware supports 64-bit addresses for consistent allocations
+ * such descriptors.
+ * @bus_dma_limit: Limit of an upstream bridge or bus which imposes a smaller
+ * DMA limit than the device itself supports.
+ * @dma_range_map: map for DMA memory ranges relative to that of RAM
+ * @dma_parms: A low level driver may set these to teach IOMMU code about
+ * segment limitations.
+ * @dma_pools: Dma pools (if dma'ble device).
+ * @dma_mem: Internal for coherent mem override.
+ * @cma_area: Contiguous memory area for dma allocations
+ * @dma_io_tlb_mem: Software IO TLB allocator. Not for driver use.
+ * @dma_io_tlb_pools: List of transient swiotlb memory pools.
+ * @dma_io_tlb_lock: Protects changes to the list of active pools.
+ * @dma_uses_io_tlb: %true if device has used the software IO TLB.
+ * @archdata: For arch-specific additions.
+ * @of_node: Associated device tree 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.
+ * @devres_head: The resources list of the device.
+ * @class: The class of the device.
+ * @groups: Optional attribute groups.
+ * @release: Callback to free the device after all references have
+ * gone away. This should be set by the allocator of the
+ * device (i.e. the bus driver that discovered the device).
+ * @iommu_group: IOMMU group the device belongs to.
+ * @iommu: Per device generic IOMMU runtime data
+ * @physical_location: Describes physical location of the device connection
+ * point in the system housing.
+ * @removable: Whether the device can be removed from the system. This
+ * should be set by the subsystem / bus driver that discovered
+ * the device.
+ *
+ * @offline_disabled: If set, the device is permanently online.
+ * @offline: Set after successful invocation of bus type's .offline().
+ * @of_node_reused: Set if the device-tree node is shared with an ancestor
+ * device.
+ * @state_synced: The hardware state of this device has been synced to match
+ * the software state of this device by calling the driver/bus
+ * sync_state() callback.
+ * @can_match: The device has matched with a driver at least once or it is in
+ * a bus (like AMBA) which can't check for matching drivers until
+ * other devices probe successfully.
+ * @dma_coherent: this particular device is dma coherent, even if the
+ * architecture supports non-coherent devices.
+ * @dma_ops_bypass: If set to %true then the dma_ops are bypassed for the
+ * streaming DMA operations (->map_* / ->unmap_* / ->sync_*),
+ * and optionall (if the coherent mask is large enough) also
+ * for dma allocations. This flag is managed by the dma ops
+ * instance from ->dma_supported.
+ *
+ * At the lowest level, every device in a Linux system is represented by an
+ * instance of struct device. The device structure contains the information
+ * that the device model core needs to model the system. Most subsystems,
+ * however, track additional information about the devices they host. As a
+ * result, it is rare for devices to be represented by bare device structures;
+ * instead, that structure, like kobject structures, is usually embedded within
+ * a higher-level representation of the device.
+ */
+struct device {
+ struct kobject kobj;
+ struct device *parent;
+
+ struct device_private *p;
+
+ const char *init_name; /* initial name of the device */
+ const struct device_type *type;
+
+ const struct bus_type *bus; /* type of bus device is on */
+ struct device_driver *driver; /* which driver has allocated this
+ device */
+ void *platform_data; /* Platform specific data, device
+ core doesn't touch it */
+ void *driver_data; /* Driver data, set and get with
+ dev_set_drvdata/dev_get_drvdata */
+ struct mutex mutex; /* mutex to synchronize calls to
+ * its driver.
+ */
+
+ struct dev_links_info links;
+ struct dev_pm_info power;
+ struct dev_pm_domain *pm_domain;
+
+#ifdef CONFIG_ENERGY_MODEL
+ struct em_perf_domain *em_pd;
+#endif
+
+#ifdef CONFIG_PINCTRL
+ struct dev_pin_info *pins;
+#endif
+ struct dev_msi_info msi;
+#ifdef CONFIG_DMA_OPS
+ const struct dma_map_ops *dma_ops;
+#endif
+ u64 *dma_mask; /* dma mask (if dma'able device) */
+ u64 coherent_dma_mask;/* Like dma_mask, but for
+ alloc_coherent mappings as
+ not all hardware supports
+ 64 bit addresses for consistent
+ allocations such descriptors. */
+ u64 bus_dma_limit; /* upstream dma constraint */
+ const struct bus_dma_region *dma_range_map;
+
+ struct device_dma_parameters *dma_parms;
+
+ struct list_head dma_pools; /* dma pools (if dma'ble) */
+
+#ifdef CONFIG_DMA_DECLARE_COHERENT
+ struct dma_coherent_mem *dma_mem; /* internal for coherent mem
+ override */
+#endif
+#ifdef CONFIG_DMA_CMA
+ struct cma *cma_area; /* contiguous memory area for dma
+ allocations */
+#endif
+#ifdef CONFIG_SWIOTLB
+ struct io_tlb_mem *dma_io_tlb_mem;
+#endif
+#ifdef CONFIG_SWIOTLB_DYNAMIC
+ struct list_head dma_io_tlb_pools;
+ spinlock_t dma_io_tlb_lock;
+ bool dma_uses_io_tlb;
+#endif
+ /* arch specific additions */
+ struct dev_archdata archdata;
+
+ struct device_node *of_node; /* associated device tree node */
+ struct fwnode_handle *fwnode; /* firmware device node */
+
+#ifdef CONFIG_NUMA
+ int numa_node; /* NUMA node this device is close to */
+#endif
+ dev_t devt; /* dev_t, creates the sysfs "dev" */
+ u32 id; /* device instance */
+
+ spinlock_t devres_lock;
+ struct list_head devres_head;
+
+ const struct class *class;
+ const struct attribute_group **groups; /* optional groups */
+
+ void (*release)(struct device *dev);
+ struct iommu_group *iommu_group;
+ struct dev_iommu *iommu;
+
+ struct device_physical_location *physical_location;
+
+ enum device_removable removable;
+
+ bool offline_disabled:1;
+ bool offline:1;
+ bool of_node_reused:1;
+ bool state_synced:1;
+ bool can_match:1;
+#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
+ defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
+ defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
+ bool dma_coherent:1;
+#endif
+#ifdef CONFIG_DMA_OPS_BYPASS
+ bool dma_ops_bypass : 1;
+#endif
+};
+
+/**
+ * struct device_link - Device link representation.
+ * @supplier: The device on the supplier end of the link.
+ * @s_node: Hook to the supplier device's list of links to consumers.
+ * @consumer: The device on the consumer end of the link.
+ * @c_node: Hook to the consumer device's list of links to suppliers.
+ * @link_dev: device used to expose link details in sysfs
+ * @status: The state of the link (with respect to the presence of drivers).
+ * @flags: Link flags.
+ * @rpm_active: Whether or not the consumer device is runtime-PM-active.
+ * @kref: Count repeated addition of the same link.
+ * @rm_work: Work structure used for removing the link.
+ * @supplier_preactivated: Supplier has been made active before consumer probe.
+ */
+struct device_link {
+ struct device *supplier;
+ struct list_head s_node;
+ struct device *consumer;
+ struct list_head c_node;
+ struct device link_dev;
+ enum device_link_state status;
+ u32 flags;
+ refcount_t rpm_active;
+ struct kref kref;
+ struct work_struct rm_work;
+ bool supplier_preactivated; /* Owned by consumer probe. */
+};
+
+/**
+ * dev_name - Return a device's name.
+ * @dev: Device with name to get.
+ * Return: The kobject name of the device, or its initial name if unavailable.
+ */
+static inline const char *dev_name(const struct device *dev)
+{
+ /* Use the init name until the kobject becomes available */
+ if (dev->init_name)
+ return dev->init_name;
+
+ return kobject_name(&dev->kobj);
+}
+
+#endif /* _DEVICE_TYPES_H_ */
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 32c2f49177b1..765f799d49bd 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -5,7 +5,7 @@
#ifndef LINUX_DMAENGINE_H
#define LINUX_DMAENGINE_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/err.h>
#include <linux/idr.h> // for struct ida
#include <linux/uio.h>
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 7b78403cac40..08ba34f2a43e 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -13,7 +13,7 @@
#define _LINUX_EDAC_H_
#include <linux/atomic.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/completion_types.h>
#include <linux/workqueue_types.h>
#include <linux/debugfs.h>
diff --git a/include/linux/enclosure.h b/include/linux/enclosure.h
index 1c630e2c2756..8fb9f561263f 100644
--- a/include/linux/enclosure.h
+++ b/include/linux/enclosure.h
@@ -12,7 +12,7 @@
#ifndef _LINUX_ENCLOSURE_H_
#define _LINUX_ENCLOSURE_H_
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/list.h>
/* A few generic types ... taken from ses-2 */
diff --git a/include/linux/fpga/fpga-bridge.h b/include/linux/fpga/fpga-bridge.h
index 223da48a6d18..3a1eeb26bd65 100644
--- a/include/linux/fpga/fpga-bridge.h
+++ b/include/linux/fpga/fpga-bridge.h
@@ -3,7 +3,7 @@
#ifndef _LINUX_FPGA_BRIDGE_H
#define _LINUX_FPGA_BRIDGE_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/fpga/fpga-mgr.h>
struct fpga_bridge;
diff --git a/include/linux/fpga/fpga-region.h b/include/linux/fpga/fpga-region.h
index 9d4d32909340..be1e5033f0d3 100644
--- a/include/linux/fpga/fpga-region.h
+++ b/include/linux/fpga/fpga-region.h
@@ -3,7 +3,7 @@
#ifndef _FPGA_REGION_H
#define _FPGA_REGION_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/fpga/fpga-mgr.h>
#include <linux/fpga/fpga-bridge.h>
diff --git a/include/linux/framer/framer.h b/include/linux/framer/framer.h
index 2352a52d7d0f..ebaacd782702 100644
--- a/include/linux/framer/framer.h
+++ b/include/linux/framer/framer.h
@@ -14,7 +14,7 @@
#include <linux/mutex_types.h>
#include <linux/notifier.h>
#include <linux/of.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/workqueue_types.h>
/**
diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h
index 3bb87bf6bc65..5803588f86db 100644
--- a/include/linux/hdmi.h
+++ b/include/linux/hdmi.h
@@ -25,7 +25,7 @@
#define __LINUX_HDMI_H_
#include <linux/types.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
enum hdmi_packet_type {
HDMI_PACKET_TYPE_NULL = 0x00,
diff --git a/include/linux/hwmon-sysfs.h b/include/linux/hwmon-sysfs.h
index d896713359cd..6b13b3e5a9b5 100644
--- a/include/linux/hwmon-sysfs.h
+++ b/include/linux/hwmon-sysfs.h
@@ -7,7 +7,7 @@
#ifndef _LINUX_HWMON_SYSFS_H
#define _LINUX_HWMON_SYSFS_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/kstrtox.h>
struct sensor_device_attribute{
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 6dafef342e91..91d67fdda784 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -7,7 +7,7 @@
#ifndef _INDUSTRIAL_IO_H_
#define _INDUSTRIAL_IO_H_
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/cdev.h>
#include <linux/device.h>
#include <linux/slab.h>
diff --git a/include/linux/lcd.h b/include/linux/lcd.h
index 238fb1dfed98..a0deeeb3db49 100644
--- a/include/linux/lcd.h
+++ b/include/linux/lcd.h
@@ -9,7 +9,7 @@
#ifndef _LINUX_LCD_H
#define _LINUX_LCD_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/mutex.h>
#include <linux/notifier.h>
#include <linux/fb.h>
diff --git a/include/linux/node.h b/include/linux/node.h
index c4c17037c954..791954e0f01b 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -15,7 +15,7 @@
#ifndef _LINUX_NODE_H_
#define _LINUX_NODE_H_
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/cpumask.h>
#include <linux/list.h>
#include <linux/mmzone.h> // for enum meminit_context
diff --git a/include/linux/peci.h b/include/linux/peci.h
index ad3ea1371680..39d455231e21 100644
--- a/include/linux/peci.h
+++ b/include/linux/peci.h
@@ -4,7 +4,7 @@
#ifndef __LINUX_PECI_H
#define __LINUX_PECI_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/kernel.h>
#include <linux/mutex_types.h>
#include <linux/types.h>
diff --git a/include/linux/pm_clock.h b/include/linux/pm_clock.h
index 68669ce18720..8b89565c6e6e 100644
--- a/include/linux/pm_clock.h
+++ b/include/linux/pm_clock.h
@@ -8,7 +8,7 @@
#ifndef _LINUX_PM_CLOCK_H
#define _LINUX_PM_CLOCK_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/notifier.h>
struct pm_clk_notifier_block {
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 5c90e059cdb7..215867204aa9 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -8,7 +8,7 @@
#ifndef _LINUX_PM_DOMAIN_H
#define _LINUX_PM_DOMAIN_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/ktime.h>
#include <linux/mutex_types.h>
#include <linux/pm.h>
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index 4a69d4af3ff8..97234cba44e0 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -14,7 +14,7 @@
#include <linux/plist.h>
#include <linux/notifier.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
enum pm_qos_flags_status {
PM_QOS_FLAGS_UNDEFINED = -1,
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 2bcf998da2a7..762ffc2c5dc2 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -12,7 +12,7 @@
#ifndef __LINUX_POWER_SUPPLY_H__
#define __LINUX_POWER_SUPPLY_H__
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/workqueue_types.h>
#include <linux/leds.h>
#include <linux/spinlock_types.h>
diff --git a/include/linux/powercap.h b/include/linux/powercap.h
index 3d557bbcd2c7..da48bd9bcdd7 100644
--- a/include/linux/powercap.h
+++ b/include/linux/powercap.h
@@ -7,7 +7,7 @@
#ifndef __POWERCAP_H__
#define __POWERCAP_H__
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/idr.h>
/*
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 98401e771e75..82cb7f0fd843 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -34,7 +34,7 @@ static inline time64_t rtc_tm_sub(struct rtc_time *lhs, struct rtc_time *rhs)
return rtc_tm_to_time64(lhs) - rtc_tm_to_time64(rhs);
}
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/seq_file.h>
#include <linux/cdev.h>
#include <linux/poll.h>
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index c37473373649..94aa8de02ea7 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -2,7 +2,7 @@
#ifndef __LINUX_SWIOTLB_H
#define __LINUX_SWIOTLB_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/dma-direction.h>
#include <linux/init.h>
#include <linux/types.h>
@@ -10,7 +10,6 @@
#include <linux/spinlock_types.h>
#include <linux/workqueue_types.h>
-struct device;
struct page;
struct scatterlist;
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 14450673bd8b..ba5d2bd8e007 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -11,7 +11,7 @@
#define __THERMAL_H__
#include <linux/idr.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/sysfs_types.h>
#include <linux/workqueue_types.h>
#include <uapi/linux/thermal.h>
diff --git a/include/linux/w1.h b/include/linux/w1.h
index 9a2a0ef39018..3cbc5e0bab9d 100644
--- a/include/linux/w1.h
+++ b/include/linux/w1.h
@@ -6,7 +6,7 @@
#ifndef __LINUX_W1_H
#define __LINUX_W1_H
-#include <linux/device.h>
+#include <linux/device_types.h>
/**
* struct w1_reg_num - broken out slave device id
diff --git a/include/media/cec.h b/include/media/cec.h
index 4c9daa53ae34..562aad160e2b 100644
--- a/include/media/cec.h
+++ b/include/media/cec.h
@@ -11,7 +11,7 @@
#include <linux/poll.h>
#include <linux/fs.h>
#include <linux/debugfs.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/cdev.h>
#include <linux/kthread.h>
#include <linux/cec-funcs.h>
diff --git a/include/media/media-devnode.h b/include/media/media-devnode.h
index d27c1c646c28..e690f171c67e 100644
--- a/include/media/media-devnode.h
+++ b/include/media/media-devnode.h
@@ -18,7 +18,7 @@
#include <linux/poll.h>
#include <linux/fs.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/cdev.h>
struct media_device;
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index 5dee575fbe86..9b8991560a3e 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -12,7 +12,7 @@
#define __NET_NFC_H
#include <linux/nfc.h>
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/skbuff.h>
#define nfc_dbg(dev, fmt, ...) dev_dbg((dev), "NFC: " fmt, ##__VA_ARGS__)
diff --git a/include/pcmcia/ss.h b/include/pcmcia/ss.h
index 694e5ae0f245..4bf85a0cfa5e 100644
--- a/include/pcmcia/ss.h
+++ b/include/pcmcia/ss.h
@@ -12,7 +12,7 @@
#ifndef _LINUX_SS_H
#define _LINUX_SS_H
-#include <linux/device.h>
+#include <linux/device_types.h>
#include <linux/sched.h> /* task_struct, completion */
#include <linux/mutex_types.h>
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index c70aafd415b5..74c9a6d165ac 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -2,6 +2,7 @@
#ifndef _SCSI_SCSI_DEVICE_H
#define _SCSI_SCSI_DEVICE_H
+#include <linux/device.h> // for device_reprobe()
#include <linux/list.h>
#include <linux/spinlock_types.h>
#include <linux/workqueue_types.h>
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 620ffbd44dbe..76b77496d734 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -15,6 +15,7 @@
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/debugfs.h>
+#include <linux/device.h>
#include <linux/export.h>
#include <linux/sprintf.h>
#include <linux/time.h>
--
2.39.2
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