SDIO function drivers should be able to power down/up their cards (e.g. a WLAN SDIO driver might want to power down its card whenever wlan0 is down). In the past few weeks we've been discussing how this could be achieved, and I'd like to present a new approach, which is based on runtime pm API. The following few patches add runtime pm support for SDIO devices, and demonstrate it with the wl1271_sdio driver. Basic functionality is provided: The power state of the device is now coupled with the state of the wlan0 interface. The nice thing about this approach is how small it is, as the runtime PM core is already taking care of everything needed (usage counts, device hierarchy, established set of API, synchronization, ...). Having said that, I'd like to stress that these patches are early submitted for RFC purposes only, as they are still in a preliminary state and only lightly tested. Please note that I will soon be leaving for the rest of August and am going to have a very limited email access, so it might take me some time to respond. Appreciate your feedback, Thank you, Ohad Ben-Cohen (6): mmc: sdio: fully reconfigure oldcard on resume sdio: add power_restore support mmc: add general runtime PM support sdio: add general runtime PM support sdio: enable Runtime PM for SDIO cards wireless: wl1271_sdio: enable Runtime PM drivers/mmc/core/bus.c | 35 +++++++++++++++++++++++++++ drivers/mmc/core/sdio.c | 24 +++++++++++++++--- drivers/mmc/core/sdio_bus.c | 10 ++++++++ drivers/net/wireless/wl12xx/wl1271_sdio.c | 37 ++++++++++++++++++++++++++++- 4 files changed, 101 insertions(+), 5 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
