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<th>Priority</th>
<td>medium
</td>
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [Baytrail-M] brightness can't be adjusted"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73252">73252</a>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Summary</th>
<td>[Baytrail-M] brightness can't be adjusted
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Reporter</th>
<td>evawang@linpus.com
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>XOrg CVS
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Product</th>
<td>DRI
</td>
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<pre>brightness can't be adjusted on Baytrail-M.
We will call ACPI _BCM method to notify BIOS and BIOS generate ASLE interrupt
to VGA　controller offset 0xE4. but there is no method to receive and handle
this interrupt in i915. this only happens on Baytrail-M platform. please help
to check. Thanks!
kernel: 3.13-RC6</pre>
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