wifi: rtw89: pci: use DBI function for 8852AE/8852BE/8851BE

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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

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Chin-Yen Lee 2024-01-03 09:23:46 +08:00 • committed by Kalle Valo

parent 3fbf61207c

commit 9496d62f38

2 changed files with 68 additions and 2 deletions

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69

drivers/net/wireless/realtek/rtw89/pci.c

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1

drivers/net/wireless/realtek/rtw89/pci.h

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