Hi everyone, This series adds regulator claiming and enabling support for simplefb.
Sometimes the simplefb display output path consits of external conversion chips and/or LCD drivers and backlights. These devices normally have GPIOs to turn them on and/or bring them out of reset, and regulators supplying power to them. While the kernel does not touch unclaimed GPIOs, the regulator core happily disables unused regulators. Thus we need simplefb to claim and enable the regulators used throughout the display pipeline. Now the DT bindings don't support a list of regulators directly, so I'm working around it by having a "num-supplies" property to specify the number of supply properties to check, and name the actual supplies as "vinN-supply". Hans, Maxime, AXP223 support for the A23/A33 Q8 tablets will need this to keep the LCD on. The Primo81 needs this as well. Patch 1 adds the regulator properties to the DT binding. Patch 2 adds code to the simplefb driver to claim and enable regulators. Regards ChenYu Chen-Yu Tsai (2): dt-bindings: simplefb: Support a list of regulator supply properties simplefb: Claim and enable regulators .../bindings/video/simple-framebuffer.txt | 14 ++- drivers/video/fbdev/simplefb.c | 102 ++++++++++++++++++++- 2 files changed, 111 insertions(+), 5 deletions(-) -- 2.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
