[ Resending with fewer people in CC list. For some reason the series never reached attented mailing lists. ] The recent publication of the ACPI 5.1 specification [1] adds a reserved name for Device Specific Data (_DSD, Section 6.2.5). This mechanism allows for passing arbitrary hardware description data to the OS. The exact format of the _DSD data is specific to the UUID paired with it [2]. An ACPI Device Properties UUID has been defined [3] to provide a format compatible with existing device tree schemas. The purpose for this was to allow for the reuse of the existing schemas and encourage the development of firmware agnostic device drivers. This series accomplishes the following (as well as some other dependencies): * Add _DSD support to the ACPI core This simply reads the UUID and the accompanying Package * Add ACPI Device Properties _DSD format support This understands the hierarchical key:value pair structure defined by the Device Properties UUID * Add a unified device properties API with ACPI and OF backends This provides for the firmware agnostic device properties Interface to be used by drivers * Provides 2 example drivers that were previously Device Tree aware that can now be used with either Device Tree or ACPI Device Properties. The both drivers use an arbitrary _HID. This has been tested on Minnowboard with relevant parts of the modified DSDT at the end of this email. This series does not provide for a means to append to a system DSDT. That will ultimately be required to make the most effective use of the _DSD mechanism. Work is underway on that as a separate effort. [1] http://www.uefi.org/sites/default/files/resources/ACPI_5_1release.pdf [2] http://www.uefi.org/sites/default/files/resources/_DSD-implementation-guide-toplevel.htm [3] http://www.uefi.org/sites/default/files/resources/_DSD-device-properties-UUID.pdf Aaron Lu (3): of: Add property_ops callback for devices with of_node gpiolib: add API to get gpio desc and flags Input: gpio_keys_polled - Make use of device property API Max Eliaser (1): leds: leds-gpio: Make use of device property API Mika Westerberg (4): ACPI: Add support for device specific properties ACPI: Document ACPI device specific properties mfd: Add ACPI support gpio: sch: Consolidate core and resume banks Rafael J. Wysocki (1): Driver core: Unified device properties interface for platform firmware Documentation/acpi/enumeration.txt | 27 ++ Documentation/acpi/properties.txt | 359 ++++++++++++++++++++ drivers/acpi/Makefile | 1 + drivers/acpi/glue.c | 4 +- drivers/acpi/internal.h | 6 + drivers/acpi/property.c | 542 ++++++++++++++++++++++++++++++ drivers/acpi/scan.c | 14 +- drivers/base/Makefile | 2 +- drivers/base/property.c | 48 +++ drivers/gpio/gpio-sch.c | 303 ++++++----------- drivers/gpio/gpiolib-acpi.c | 81 +++-- drivers/gpio/gpiolib.c | 18 + drivers/gpio/gpiolib.h | 8 + drivers/input/keyboard/gpio_keys_polled.c | 139 +++++--- drivers/leds/leds-gpio.c | 130 ++++--- drivers/mfd/mfd-core.c | 41 +++ drivers/of/base.c | 194 ++++++++++- drivers/of/platform.c | 4 +- include/acpi/acpi_bus.h | 8 + include/linux/acpi.h | 40 +++ include/linux/device.h | 3 + include/linux/gpio/consumer.h | 11 + include/linux/mfd/core.h | 3 + include/linux/property.h | 54 +++ 24 files changed, 1716 insertions(+), 324 deletions(-) create mode 100644 Documentation/acpi/properties.txt create mode 100644 drivers/acpi/property.c create mode 100644 drivers/base/property.c create mode 100644 include/linux/property.h ------ DSDT For Minnowboard ------ Scope (\_SB.PCI0.LPC) { Device (LEDS) { Name (_HID, "MNW0001") Name (_CRS, ResourceTemplate () { GpioIo (Exclusive, PullDown, 0, 0, IoRestrictionOutputOnly, "\\_SB.PCI0.LPC", 0, ResourceConsumer) {10} GpioIo (Exclusive, PullDown, 0, 0, IoRestrictionOutputOnly, "\\_SB.PCI0.LPC", 0, ResourceConsumer) {11} }) Device (LEDH) { Name (_HID, "PRP0000") Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"label", "Heartbeat"}, Package () {"gpios", Package () {^^LEDS, 0, 0, 0}}, Package () {"linux,default-trigger", "heartbeat"}, Package () {"linux,default-state", "off"}, Package () {"linux,retain-state-suspended", 1}, } }) } Device (LEDM) { Name (_HID, "PRP0000") Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"label", "MMC0 Activity"}, Package () {"gpios", Package () {^^LEDS, 1, 0, 0}}, Package () {"linux,default-trigger", "mmc0"}, Package () {"linux,default-state", "on"}, Package () {"linux,retain-state-suspended", 1}, } }) } } Device (BTNS) { Name (_HID, "MNW0002") Name (_CRS, ResourceTemplate () { GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly, "\\_SB.PCI0.LPC", 0, ResourceConsumer) {0} GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly, "\\_SB.PCI0.LPC", 0, ResourceConsumer) {1} GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly, "\\_SB.PCI0.LPC", 0, ResourceConsumer) {2} GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly, "\\_SB.PCI0.LPC", 0, ResourceConsumer) {3} }) Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"poll-interval", 100}, Package () {"autorepeat", 1} } }) Device (BTN0) { Name (_HID, "PRP0000") Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"linux,code", 105}, Package () {"linux,input-type", 1}, Package () {"gpios", Package () {^^BTNS, 0, 0, 1}}, } }) } Device (BTN1) { Name (_HID, "PRP0000") Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"linux,code", 108}, Package () {"linux,input-type", 1}, Package () {"gpios", Package (4) {^^BTNS, 1, 0, 1}}, } }) } Device (BTN2) { Name (_HID, "PRP0000") Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"linux,code", 103}, Package () {"linux,input-type", 1}, Package () {"gpios", Package () {^^BTNS, 2, 0, 1}}, } }) } Device (BTN3) { Name (_HID, "PRP0000") Name (_DSD, Package () { ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package () { Package () {"linux,code", 106}, Package () {"linux,input-type", 1}, Package () {"gpios", Package (4) {^^BTNS, 3, 0, 1}}, } }) } } } -- 2.1.0.rc1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
