Chin-Yen Lee 66bde385a1 wifi: rtw89: pci: use DBI function for 8852AE/8852BE/8851BE
commit 9496d62f3877bc0f97b415bc04af98d092878026 upstream.

Sometimes driver can't use kernel API pci_read/write_config_byte
to access the PCI config space of above address 0x100 due to
the negotiated PCI setting. 8852AE/8852BE/8851BE provide another
way called DBI function, which belongs to WiFi mac and could
access all PCI config space for this case.

Link: https://lore.kernel.org/linux-wireless/79fe81b7db7148b9a7da2353c16d70fb@realtek.com/T/#t
Signed-off-by: Chin-Yen Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240103012346.6822-1-pkshih@realtek.com
Signed-off-by: Zenm Chen <zenmchen@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-06-27 11:09:00 +01:00
2022-09-28 09:02:20 +02:00
2025-06-19 15:28:47 +02:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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