brcmfmac: Avoid keeping power to SDIO card unless WOWL is used
Keeping the power to the SDIO card during system wide suspend, consumes
energy. Especially on battery driven embedded systems, this can be a
problem. Therefore, let's change the behaviour into allowing the SDIO card
to be powered off, unless WOWL is supported and enabled.
Note that, the downside from this change, is that during system resume the
SDIO card needs to be re-initialized and the FW must be re-programmed. Even
if this may take some time to complete, it should we worth it, rather than
draining the battery.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Christophe Roullier <christophe.roullier@foss.st.com>
Reviewed-by: Yann Gautier <yann.gautier@foss.st.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220323083950.414783-1-ulf.hansson@linaro.org
Change-Id: I0d3bc6c7664d63d8f4812247a4c5f76abf07099d
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/linux-stm32/+/247758
Tested-by: Yann GAUTIER <yann.gautier@foss.st.com>
Reviewed-by: Yann GAUTIER <yann.gautier@foss.st.com>
Reviewed-by: CITOOLS <MDG-smet-aci-reviews@list.st.com>
Reviewed-by: CIBUILD <MDG-smet-aci-builds@list.st.com>
Reviewed-by: Christophe KERELLO <christophe.kerello@st.com>
06bcfacfc5