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Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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
This commit adds the ability to apply device-specific quirks to the
mwifiex driver. It uses DMI matching similar to the quirks brcmfmac uses
with dmi.c. We'll add identifiers to match various MS Surface devices,
which this is primarily meant for, later.
This commit is a slightly modified version of a previous patch sent in
by Tsuchiya Yuto.
Co-developed-by: Tsuchiya Yuto <kitakar@gmail.com>
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/20210820142050.35741-2-verdre@v0yd.nl
