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fpga: dfl: move dfl_device_id to mod_devicetable.h

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In order to support MODULE_DEVICE_TABLE() for dfl device driver, this
patch moves struct dfl_device_id to mod_devicetable.h

Some brief description for DFL (Device Feature List) is added to make
the DFL known to the whole kernel.

Reviewed-by: Tom Rix <trix@redhat.com>
Acked-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Link: https://lore.kernel.org/r/20210107043714.991646-5-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Yilun 2021-01-06 20:37:10 -08:00 committed by Greg Kroah-Hartman
parent e08b9e6d87
commit 9326eecd93
2 changed files with 25 additions and 12 deletions
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13
drivers/fpga/dfl.h
View File

@ -22,6 +22,7 @@
#include <linux/interrupt.h>
#include <linux/iopoll.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/uuid.h>
@ -525,18 +526,6 @@ enum dfl_id_type {
DFL_ID_MAX,
};
/**
* struct dfl_device_id - dfl device identifier
* @type: DFL FIU type of the device. See enum dfl_id_type.
* @feature_id: feature identifier local to its DFL FIU type.
* @driver_data: driver specific data.
*/
struct dfl_device_id {
u16 type;
u16 feature_id;
unsigned long driver_data;
};
/**
* struct dfl_device - represent an dfl device on dfl bus
*

24
include/linux/mod_devicetable.h
View File

@ -846,4 +846,28 @@ struct auxiliary_device_id {
kernel_ulong_t driver_data;
};
/*
* DFL (Device Feature List)
*
* DFL defines a linked list of feature headers within the device MMIO space to
* provide an extensible way of adding features. Software can walk through these
* predefined data structures to enumerate features. It is now used in the FPGA.
* See Documentation/fpga/dfl.rst for more information.
*
* The dfl bus type is introduced to match the individual feature devices (dfl
* devices) for specific dfl drivers.
*/
/**
* struct dfl_device_id - dfl device identifier
* @type: DFL FIU type of the device. See enum dfl_id_type.
* @feature_id: feature identifier local to its DFL FIU type.
* @driver_data: driver specific data.
*/
struct dfl_device_id {
__u16 type;
__u16 feature_id;
kernel_ulong_t driver_data;
};
#endif /* LINUX_MOD_DEVICETABLE_H */