Messages in this thread | | | Date | Tue, 15 May 2001 10:29:59 -0700 (PDT) | From | James Simmons <> | Subject | Re: LANANA: To Pending Device Number Registrants |
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> > What I wish was done was the very first ioctl call was a generic ioctl > > call to pass driver specific data. Basically you have something like this: > > > > struct fb_driver_specific_data { > > __u32 magic_identifier; > > __u32 size_of_data_packet; > > char *data_buffer; > > } > > It's called write(2). magic_identifier: which file we are writing to. > size_of_data_packet: length. data_buffer: buffer we write from. > > And if write() has too much overhead - we'd better fix _that_, because > it's much more likely hotspot than ioctl ever will be.
I would use write except we use write to draw into the framebuffer. If I write to the framebuffer with that data the only thing that will happen is I will get pretty colors on my screen.
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