On 27/02/14 21:38, Aaro Koskinen wrote: > Hi, > > On Thu, Feb 27, 2014 at 08:19:06AM +0000, Leigh Brown wrote: >> Did that driver work on the N810 at that point? If I look at the kernel >> tree at that point in time would all the components be there? It would >> make it easier if I had a starting point as I don't have any documentation >> so reading the old source code is the only way I can figure out how things >> work(ed). > > OpenWRT has patches to make the old blizzard driver work: > > http://git.openwrt.org/?p=openwrt.git;a=tree;f=target/linux/omap24xx/patches-3.3;h=c0cece34bf0a5f37496015c8e76c7eae636efe06;hb=HEAD > > See 310-n810-lcd.patch, and also you will need at least > 312-no-hwmod-reset.patch, otherwise the HW won't respond at all. > > There is no known kernel tree with "new" (now deleted) panel-n8x0 that > would work on N8x0. > > So probably the easiest route would be to take the old blizzard driver, > forward port it to current kernel (the old omapfb is still supported) The old omapfb driver (drivers/video/omap/) only supports omap1. The unused omap2 code was removed. What I would probably do is get an old kernel that has working display. Then add some hacks to get register dumps for RFBI, blizzard and the panel, and see what gpios, regulators, etc are turned on and connected to blizzard or the panel. And then just start from scratch with the latest kernel, copy-pasting parts of the driver. That's more or less what I did when I made the N800 display work with the new omapfb and omapdss (drivers/video/omap2/). Tomi
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