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<section id="sa1100fb-sa-1100-lcd-graphic-framebuffer-driver">
<h1>sa1100fb - SA-1100 LCD graphic framebuffer driver<a class="headerlink" href="#sa1100fb-sa-1100-lcd-graphic-framebuffer-driver" title="Link to this heading">¶</a></h1>
<p>This is a driver for a graphic framebuffer for the SA-1100 LCD
controller.</p>
<section id="configuration">
<h2>Configuration<a class="headerlink" href="#configuration" title="Link to this heading">¶</a></h2>
<p>For most common passive displays, giving the option:</p>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>video=sa1100fb:bpp:<value>,lccr0:<value>,lccr1:<value>,lccr2:<value>,lccr3:<value>
</pre></div>
</div>
<p>on the kernel command line should be enough to configure the
controller. The bits per pixel (bpp) value should be 4, 8, 12, or
16. LCCR values are display-specific and should be computed as
documented in the SA-1100 Developer’s Manual, Section 11.7. Dual-panel
displays are supported as long as the SDS bit is set in LCCR0; GPIO<9:2>
are used for the lower panel.</p>
<p>For active displays or displays requiring additional configuration
(controlling backlights, powering on the LCD, etc.), the command line
options may not be enough to configure the display. Adding sections to
<code class="xref c c-func broken_xref docutils literal notranslate"><span class="pre">sa1100fb_init_fbinfo()</span></code>, <code class="xref c c-func broken_xref docutils literal notranslate"><span class="pre">sa1100fb_activate_var()</span></code>,
<code class="xref c c-func broken_xref docutils literal notranslate"><span class="pre">sa1100fb_disable_lcd_controller()</span></code>, and <code class="xref c c-func broken_xref docutils literal notranslate"><span class="pre">sa1100fb_enable_lcd_controller()</span></code>
will probably be necessary.</p>
<p>Accepted options:</p>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>bpp:<value> Configure for <value> bits per pixel
lccr0:<value> Configure LCD control register 0 (11.7.3)
lccr1:<value> Configure LCD control register 1 (11.7.4)
lccr2:<value> Configure LCD control register 2 (11.7.5)
lccr3:<value> Configure LCD control register 3 (11.7.6)
</pre></div>
</div>
<p>Mark Huang <<a class="reference external" href="mailto:mhuang%40livetoy.com">mhuang<span>@</span>livetoy<span>.</span>com</a>></p>
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