[PATCH v3 22/22] wifi: rtw88: Enable the new RTL8821AU/RTL8812AU drivers

[Bitterblue Smith <rtl8821cerfe2@gmail.com>]

These are older Wifi 5 chips. RTL8821AU is 1x1, with or without
Bluetooth. RTL8812AU is 2x2, without Bluetooth.

Beamforming is not implemented. It looks like these chips need a
different implementation than what is in bf.c.

Speed tests with RTL8821AU: 137 Mbps download, 144 Mbps upload.
Speed tests with RTL8812AU: 344 Mbps download, 387 Mbps upload.

RTL8812AU should be faster, but my router is currently limited to
transmitting only one spatial stream due to a kernel bug.

Station mode and AP mode were tested.

Bluetooth coexistence works. I used my Bluetooth headphones for
several days, listening to music and watching videos. There is only
a problem with the wifi speeds with one router:

With ISP's HG6544C router:
Official driver: 3/5 Mbps.
rtw88: a bit more, but not steady at all. Not enough to watch a 1080p
Youtube video.

With my D-Link Eagle R32 router running Openwrt, on the same channel:
Official driver: 6/10 Mbps.
rtw88: download starts around 30, climbs to 50 / upload is 10 Mbps.
I can watch a 1080p Youtube video.

The music doesn't cut out during any speed tests.

I also tested transferring files to and from my phone. I don't have
other types of Bluetooth devices to test.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
---
v2:
 - Add more information to the commit message.
 - Add the new rtw88_88xxa and rtw88_8812a modules.

v3:
 - Mention 8811AU in Kconfig.
---
 drivers/net/wireless/realtek/rtw88/Kconfig  | 33 +++++++++++++++++++++
 drivers/net/wireless/realtek/rtw88/Makefile | 15 ++++++++++
 2 files changed, 48 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/Kconfig b/drivers/net/wireless/realtek/rtw88/Kconfig
index 02b0d698413b..733b3e58da51 100644
--- a/drivers/net/wireless/realtek/rtw88/Kconfig
+++ b/drivers/net/wireless/realtek/rtw88/Kconfig
@@ -43,6 +43,17 @@ config RTW88_8723D
 config RTW88_8821C
 	tristate
 
+config RTW88_88XXA
+	tristate
+
+config RTW88_8821A
+	tristate
+	select RTW88_88XXA
+
+config RTW88_8812A
+	tristate
+	select RTW88_88XXA
+
 config RTW88_8822BE
 	tristate "Realtek 8822BE PCI wireless network adapter"
 	depends on PCI
@@ -189,6 +200,28 @@ config RTW88_8821CU
 
 	  802.11ac USB wireless network adapter
 
+config RTW88_8821AU
+	tristate "Realtek 8821AU/8811AU USB wireless network adapter"
+	depends on USB
+	select RTW88_CORE
+	select RTW88_USB
+	select RTW88_8821A
+	help
+	  Select this option will enable support for 8821AU and 8811AU chipset
+
+	  802.11ac USB wireless network adapter
+
+config RTW88_8812AU
+	tristate "Realtek 8812AU USB wireless network adapter"
+	depends on USB
+	select RTW88_CORE
+	select RTW88_USB
+	select RTW88_8812A
+	help
+	  Select this option will enable support for 8812AU chipset
+
+	  802.11ac USB wireless network adapter
+
 config RTW88_DEBUG
 	bool "Realtek rtw88 debug support"
 	depends on RTW88_CORE
diff --git a/drivers/net/wireless/realtek/rtw88/Makefile b/drivers/net/wireless/realtek/rtw88/Makefile
index 8f47359b4380..f0b49f5a8a5a 100644
--- a/drivers/net/wireless/realtek/rtw88/Makefile
+++ b/drivers/net/wireless/realtek/rtw88/Makefile
@@ -77,6 +77,21 @@ rtw88_8821cs-objs		:= rtw8821cs.o
 obj-$(CONFIG_RTW88_8821CU)	+= rtw88_8821cu.o
 rtw88_8821cu-objs		:= rtw8821cu.o
 
+obj-$(CONFIG_RTW88_88XXA)	+= rtw88_88xxa.o
+rtw88_88xxa-objs		:= rtw88xxa.o
+
+obj-$(CONFIG_RTW88_8821A)	+= rtw88_8821a.o
+rtw88_8821a-objs		:= rtw8821a.o rtw8821a_table.o
+
+obj-$(CONFIG_RTW88_8812A)	+= rtw88_8812a.o
+rtw88_8812a-objs		:= rtw8812a.o rtw8812a_table.o
+
+obj-$(CONFIG_RTW88_8821AU)	+= rtw88_8821au.o
+rtw88_8821au-objs		:= rtw8821au.o
+
+obj-$(CONFIG_RTW88_8812AU)	+= rtw88_8812au.o
+rtw88_8812au-objs		:= rtw8812au.o
+
 obj-$(CONFIG_RTW88_PCI)		+= rtw88_pci.o
 rtw88_pci-objs			:= pci.o
 
-- 
2.46.0