Beamforming is used for directional signal transmission/reception.
Beamformee plays the role for signal reception, and makes the RX
performance better in middle distance range.
Implement beamformee related callbacks for 8821c.
Since 8821c only support 1ss rate, nc_index in beamformee setting
needs to be adjusted based on the capability.
Signed-off-by: Tzu-En Huang <tehuang@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200603094218.19942-4-yhchuang@realtek.com
In the current design, various chip functions and tables
are built into rtw88 core. That causes kernel to load its
functionalities even if a chip isn't currently used. We
plan to make each chip's functionalities a separate
kernel module to reduce rtw88 core. And kernel will be
able to load the necessary.
Before extracting chip functionalities, we export symbols
inside rtw88 core which will be used in chip modules.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200515052327.31874-2-yhchuang@realtek.com
8723D doesn't support beamform because rtw88 only supports VHT beamform
but 8723d doesn't have VHT capability. Though 8723d doesn't support
beamform, BSS_CHANGED_MU_GROUPS is still marked as changed when doing
disassociation. So, add wrapper functions for all beamform ops to make
sure they aren't NULL before calling.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200420055054.14592-3-yhchuang@realtek.com
In associating and configuring beamformee, bfee->role is not
correctly set before rtw_chip_ops::config_bfee().
Fix it by setting it correctly.
Signed-off-by: Tzu-En Huang <tehuang@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Reviewed-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Enable MU-MIMO transmit beamformee support for chipset 8822b and 8822c.
If the driver is in station mode and associated with an AP, and the
capabilities of both meet the requirement of beamforming, driver will
run as a beamformee and the corresponding chip settings will be set.
In addition, module parameter support_bf is added to enable or disable
beamforming. Sometimes driver will need to disable for inter-operate
issues, and it would be easier for driver to debug.
Signed-off-by: Tzu-En Huang <tehuang@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
