📄 linux_drivers.html
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<p align="justify">Epson R&D provides source code for Linux
display drivers
supporting most Epson LCD controllers. The intended platform for
these drivers are embedded systems, where memory resources are limited. The
objective was to keep the footprint as small as possible.</p>
<p align="justify">In the effort to keep the driver code as small as
possible there were design decisions made that users should be aware
of. One decision toward keeping a small footprint is there are few
run-time checks present in the driver code. Another decision was to
not keep a shadowed copy of the color palette. From an application
standpoint, the consequence is that reading a palette entry may
result in a different value that what was written. The reason is
that most of the supported controllers do not support a full 8 bits for
each of the primary
colors (red, green, blue). Another limitation, by design, is that the
driver supports only one color depth at a time. That means you can configure
and build the driver for 4bpp or 8bpp or 16bpp but you cannot
dynamically switch between these color depths at run time.</td>
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<td><b><font size="+2" color="#3333ff">Frame Buffer Display Drivers</font></b>
<p>The following frame buffer display device drivers support:
</p>
<p><b>s1d13700</b>: 1bpp, 2bpp, 4bpp
<br>
<b>s1d13704</b>: 1bpp, 2bpp, 4bpp (no 8bpp)
<br>
<b>s1d13705</b>: 1bpp, 2bpp, 4bpp, 8bpp
<br>
<b>s1d13706</b>: 1bpp, 2bpp, 4bpp, 8bpp, 16bpp
<br>
<b>s1d13504</b>: 1bpp, 2bpp, 4bpp, (no 8bpp), 16bpp
<br>
<b>s1d13505</b>: 1bpp, 2bpp, 4bpp, 8bpp, 16bpp
<br>
<b>s1d13506</b>: 4bpp, 8bpp, 16bpp
<br>
<b>s1d13806</b>: 4bpp, 8bpp, 16bpp
<br>
<b>s1d13a03</b>: 1bpp, 2bpp, 4bpp, 8bpp, 16bpp
<br>
<b>s1d13a04</b>: 1bpp, 2bpp, 4bpp, 8bpp, 16bpp
<br>
<b>s1d13a05</b>: 1bpp, 2bpp, 4bpp, 8bpp, 16bpp<br>
<b>s1d13714</b>: 8bpp, 16bpp, 32bpp<br>
<b>s1d13715</b>: 8bpp, 16bpp, 32bpp<br>
<b>s1d13732:</b> 16bpp<br>
<b>s1d13733:</b> 16bpp</p>
<p>See the instruction on building frame buffer display drivers <a
href="HOWTO_build_frame_buffer_drivers.html">here</a>
.
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<p><font size="+2" color="#000099">USB device drivers</font>
</p>
<p>support for <b>s1d13a03</b>, <b>s1d13a04</b> and
<b>s1d13a05</b> chips:
</p>
<p>See the instruction on building and testing the USB drivers <a
href="HOWTO_build_usb_drivers.html">here</a>
.
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