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    Subject[PATCH 16/28] device.h: move declarations to device_types.h
    Date
    By providing declarations in a lean header, we can reduce header
    dependencies.

    Signed-off-by: Max Kellermann <max.kellermann@ionos.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 | 500 ++++++++++++++++++
    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/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 +
    51 files changed, 552 insertions(+), 500 deletions(-)
    create mode 100644 include/linux/device_types.h

    diff --git a/block/disk-events.c b/block/disk-events.c
    index e5b3006bcef6..3e182ba939b5 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"

    diff --git a/block/early-lookup.c b/block/early-lookup.c
    index 3effbd0d35e9..44d0bc80afb5 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>

    struct uuidcmp {
    const char *uuid;
    diff --git a/block/partitions/core.c b/block/partitions/core.c
    index e6aad6f5f97f..7adfa786b0b5 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/vmalloc.h>
    #include <linux/raid/detect.h>
    #include "check.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 3ebac2496679..9243135a701f 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@ideasonboard.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@ti.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 e1c0ef0c3894..41166047771b 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 "tidss_crtc.h"
    #include "tidss_dispc.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 3a14de75286a..3916d2f0a9af 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..1e5a3842d5d3
    --- /dev/null
    +++ b/include/linux/device_types.h
    @@ -0,0 +1,500 @@
    +// SPDX-License-Identifier: GPL-2.0
    +/*
    + * device.h - generic, centralized driver model
    + *
    + * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
    + * Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.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/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/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 5b01ebf9c254..a2ec26d5cba9 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 f58dcf5712ad..b2722cffdb3e 100644
    --- a/include/linux/thermal.h
    +++ b/include/linux/thermal.h
    @@ -12,7 +12,7 @@

    #include <linux/of.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 085dd6a526c8..92fae6461437 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 d5d94510afd3..6c61c24b53cf 100644
    --- a/kernel/trace/blktrace.c
    +++ b/kernel/trace/blktrace.c
    @@ -14,6 +14,7 @@
    #include <linux/mutex.h>
    #include <linux/slab.h>
    #include <linux/debugfs.h>
    +#include <linux/device.h>
    #include <linux/export.h>
    #include <linux/time.h>
    #include <linux/uaccess.h>
    --
    2.39.2

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