Hi everyone, This patchset adds support for sii9234 HD Mobile Link Bridge. The chip is used to convert HDMI signal into MHL. The driver enables HDMI output on Trats and Trats2 boards. The code is based on the driver [1] developed by: Adam Hampson <ahampson@xxxxxxxxxxxxxxx> Erik Gilling <konkers@xxxxxxxxxxx> with additional contributions from: Shankar Bandal <shankar.b@xxxxxxxxxxx> Dharam Kumar <dharam.kr@xxxxxxxxxxx> The drivers architecture was greatly simplified and transformed into a form accepted (hopefully) by opensource community. The main differences from original code are: * using single I2C client instead of 4 subclients * remove all logic non-related to establishing HDMI link * simplify error handling * rewrite state machine in interrupt handler * wakeup and discovery triggered by an extcon event * integrate with Device Tree For now, the driver is added to drivers/misc/ directory because it has neigher userspace nor kernel interface. The chip is capable of receiving and processing CEC events, so the driver may export an input device in /dev/ in the future. However CEC could be also handled by HDMI driver. I kindly ask for suggestions about the best location for this driver. Both the chip and the driver are quite autonomic. The chip works as 'invisible proxy' for HDMI signal, so there is no need to integrate it with HDMI drivers by helper-subsystems like v4l2_subdev or drm_bridge. If the driver is merged then the driver from drivers/media/platform/s5p-tv/sii9234_drv.c could be safely removed. All comments are welcome. Regards, Tomasz Stanislawski References: [1] https://github.com/junpei0824/SC02C-linux/tree/master-jelly-cm-aokp/drivers/media/video/mhl Tomasz Stanislawski (2): misc: add sii9234 driver arm: dts: trats2: add SiI9234 node Documentation/devicetree/bindings/sii9234.txt | 22 + arch/arm/boot/dts/exynos4412-trats2.dts | 43 + drivers/misc/Kconfig | 8 + drivers/misc/Makefile | 1 + drivers/misc/sii9234.c | 1081 +++++++++++++++++++++++++ 5 files changed, 1155 insertions(+) create mode 100644 Documentation/devicetree/bindings/sii9234.txt create mode 100644 drivers/misc/sii9234.c -- 1.7.9.5 -- 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