Searched hist:a847666a (Results 1 – 3 of 3) sorted by relevance
/openbmc/linux/drivers/net/wireless/marvell/mwifiex/ |
H A D | pcie_quirks.h | a847666a Fri Aug 20 09:20:50 CDT 2021 Tsuchiya Yuto <kitakar@gmail.com> mwifiex: pcie: add reset_d3cold quirk for Surface gen4+ devices
To reset mwifiex on Surface gen4+ (Pro 4 or later gen) devices, it seems that putting the wifi device into D3cold is required according to errata.inf file on Windows installation (Windows/INF/errata.inf).
This patch adds a function that performs power-cycle (put into D3cold then D0) and call the function at the end of reset_prepare().
Note: Need to also reset the parent device (bridge) of wifi on SB1; it might be because the bridge of wifi always reports it's in D3hot. When I tried to reset only the wifi device (not touching parent), it gave the following error and the reset failed:
acpi device:4b: Cannot transition to power state D0 for parent in D3hot mwifiex_pcie 0000:03:00.0: can't change power state from D3cold to D0 (config space inaccessible)
Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com> Signed-off-by: Jonas Dreßler <verdre@v0yd.nl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20210820142050.35741-3-verdre@v0yd.nl
|
H A D | pcie_quirks.c | a847666a Fri Aug 20 09:20:50 CDT 2021 Tsuchiya Yuto <kitakar@gmail.com> mwifiex: pcie: add reset_d3cold quirk for Surface gen4+ devices
To reset mwifiex on Surface gen4+ (Pro 4 or later gen) devices, it seems that putting the wifi device into D3cold is required according to errata.inf file on Windows installation (Windows/INF/errata.inf).
This patch adds a function that performs power-cycle (put into D3cold then D0) and call the function at the end of reset_prepare().
Note: Need to also reset the parent device (bridge) of wifi on SB1; it might be because the bridge of wifi always reports it's in D3hot. When I tried to reset only the wifi device (not touching parent), it gave the following error and the reset failed:
acpi device:4b: Cannot transition to power state D0 for parent in D3hot mwifiex_pcie 0000:03:00.0: can't change power state from D3cold to D0 (config space inaccessible)
Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com> Signed-off-by: Jonas Dreßler <verdre@v0yd.nl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20210820142050.35741-3-verdre@v0yd.nl
|
H A D | pcie.c | a847666a Fri Aug 20 09:20:50 CDT 2021 Tsuchiya Yuto <kitakar@gmail.com> mwifiex: pcie: add reset_d3cold quirk for Surface gen4+ devices
To reset mwifiex on Surface gen4+ (Pro 4 or later gen) devices, it seems that putting the wifi device into D3cold is required according to errata.inf file on Windows installation (Windows/INF/errata.inf).
This patch adds a function that performs power-cycle (put into D3cold then D0) and call the function at the end of reset_prepare().
Note: Need to also reset the parent device (bridge) of wifi on SB1; it might be because the bridge of wifi always reports it's in D3hot. When I tried to reset only the wifi device (not touching parent), it gave the following error and the reset failed:
acpi device:4b: Cannot transition to power state D0 for parent in D3hot mwifiex_pcie 0000:03:00.0: can't change power state from D3cold to D0 (config space inaccessible)
Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com> Signed-off-by: Jonas Dreßler <verdre@v0yd.nl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20210820142050.35741-3-verdre@v0yd.nl
|