This patchset enables setting of acpi power state for sdio device when it is runtime suspended/resumed. SDIO function drivers can use the interfaces too introduced in patch 3 when there is such a need.
Patch 1 adds slot number information to the sdhci_host structure, the slot number will be used to bind the sdio device with acpi node. Patch 2 does the actual binding. Patch 3 introduces a platform power management operation structure, in which 4 callbacks are defined. The reason this structure is used is that in addition to ACPI, there may be other platform mechanisms to place a device into a low power state. And a implementation of this structure is done for ACPI in this patch. The idea and the definition of this structure is heavily based on the one used in PCI subsystem. Patch 4 utilizes the newly added platform pm api to set the device into a low power state after its driver's runtime suspend callback. Its runtime wakeup capability is also enabled, and for this to work, driver must call device_set_run_wake(dev, true) somewhere when wakeup is desired. Please note that this wakeup mentioned here is realized through a sideband signal, it's not done by a SDIO interrupt. So platform support code is needed. Aaron Lu (4): sdhci: add slot number into sdhci_host structure mmc: sdio: bind sdio device with acpi device sdio: introduce sdio_platform_pm_ops sdio: pm: set device's power state after driver runtime suspended it drivers/mmc/core/Makefile | 1 + drivers/mmc/core/sdio.c | 37 +++++++++++++++++++ drivers/mmc/core/sdio.h | 28 +++++++++++++++ drivers/mmc/core/sdio_acpi.c | 81 ++++++++++++++++++++++++++++++++++++++++++ drivers/mmc/core/sdio_bus.c | 63 +++++++++++++++++++++++++++++--- drivers/mmc/core/sdio_bus.h | 2 ++ drivers/mmc/host/sdhci-pci.c | 2 +- drivers/mmc/host/sdhci-pltfm.c | 4 +-- drivers/mmc/host/sdhci-s3c.c | 2 +- drivers/mmc/host/sdhci-spear.c | 4 +-- drivers/mmc/host/sdhci.c | 3 +- drivers/mmc/host/sdhci.h | 2 +- include/linux/mmc/sdhci.h | 1 + 13 files changed, 218 insertions(+), 12 deletions(-) create mode 100644 drivers/mmc/core/sdio.h create mode 100644 drivers/mmc/core/sdio_acpi.c -- 1.7.12.21.g871e293 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
