Re: [RFC] driving a LCD panel via I2C
From: Haavard Skinnemoen <hidden>
Date: 2007-09-24 10:36:31
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On Mon, 24 Sep 2007 10:58:08 +0200 (CEST) "Rodolfo Giometti" [off-list ref] wrote:
Hello, I have an LCD panel on a custom PXA27x based board and it must be turned on/off by some special commands via a GPIO throught a I2C chip. I'd like some suggestion about I can easily manage this situation.
I have a similar panel in the sense that it needs a bunch of SPI commands to get started. I implemented a LCD driver (drivers/video/backlight) for it so that it is automatically turned on/off at bootup/shutdown, and can be manually turned on/off through /sys/class/lcd/ltv350qv/power. AFAIK the driver is currently sitting in the backlight tree scheduled for inclusion in 2.6.24.
Maybe can I add a special I2C function to get i2c_client pointer and then using it to send on/off commands to the LCD?
Just implement it as a regular I2C chip driver which registers a device with the LCD framework when it is successfully probed. HÃ¥vard ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Linux-fbdev-devel mailing list Linux-fbdev-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-fbdev-devel