Hi everyone, This patch series adds device tree support to rfkill-gpio, and fixes some issues I ran into. This is so we can define and control RF devices through the device tree, such as the Broadcom BCM20710 UART-based Bluetooth device found on the CubieTruck, The CubieTruck uses a non-default clock rate oscillator for the BCM20710 device. As the datasheet states, a precise 32.768 KHz low power clock must be provided at power on for the device to detect the correct clock rate of the main oscillator. Hence the need for the "clock-frequency" property. The device tree bindings aren't pretty. They are the result of how gpiod_find was implemented: of_gpiod_find includes con_id in the DT property name; acpi_gpiod_find ignores it and only uses the index. A more elegant DT binding would mean splitting the gpio lookup code path in rfkill-gpio, which would be more like rfkill-gpio prior to the descriptor-based GPIO patch. I am aware there is a need for similar functionality for SDIO devices, which the CubieTruck has as well. A mail thread [1] started yesterday indicated that generic SDIO DT support was the way to go. I don't know if that could be applied to UART-based devices though. [1] http://www.spinics.net/lists/arm-kernel/msg301182.html The series depends on [PATCH v3 2/6] net: rfkill: gpio: convert to descriptor-based GPIO interface which has been applied through the GPIO tree. The last patch depends on ARM: dts: sun7i: add pin muxing options for UART2 which I sent earlier this week. Comments, please? Cheers, ChenYu Chen-Yu Tsai (6): net: rfkill: gpio: fix gpio name buffer size off by 1 net: rfkill: gpio: use clk_prepare_enable/clk_disable_unprepare net: rfkill: gpio: fix reversed clock enable state net: rfkill: gpio: add device tree support net: rfkill: gpio: add clock-frequency device tree property ARM: sun7i: cubietruck: enable bluetooth module .../devicetree/bindings/rfkill/rfkill-gpio.txt | 28 ++++++++++++++++ arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 37 ++++++++++++++++++++++ net/rfkill/rfkill-gpio.c | 37 +++++++++++++++++++--- 3 files changed, 97 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/rfkill/rfkill-gpio.txt -- 1.8.5.2 -- 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
