View All Attachments for Bug 31122

Attachment #125547
adds backlight control	patch	2016-08-05 02:17:20 UTC	2.65 KB	no flags	Details

Attachment #125548
adds backlight control	patch	2016-08-05 02:17:57 UTC	520 bytes	no flags	Details

Attachment #125561
attachment-18578-0.html	text/html	2016-08-05 16:47:33 UTC	2.24 KB	no flags	Details

<p dir="ltr">You can get vbios once nouveau is loaded from debugfs. It should correspond 1:1 to the of blob as well.</p>
<div class="gmail_extra"><br><div class="gmail_quote">On Aug 5, 2016 11:37,  &lt;<a href="mailto:bugzilla-daemon@freedesktop.org">bugzilla-daemon@freedesktop.org</a>&gt; wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
    
      
    
    <div>
      <p>
        <div>
            <b><a title="NEW - Cannot control backlight intensity on Powerbook" href="https://bugs.freedesktop.org/show_bug.cgi?id=31122#c11" target="_blank">Comment # 11</a>
              on <a title="NEW - Cannot control backlight intensity on Powerbook" href="https://bugs.freedesktop.org/show_bug.cgi?id=31122" target="_blank">bug 31122</a>
              from <span><a href="mailto:nvbugz@sparklabs.me" title="A. Chaud &lt;nvbugz@sparklabs.me&gt;" target="_blank"> <span>A. Chaud</span></a>
</span></b>
        <pre>nvagetbios wasn&#39;t able to extract the bios.  From what I gathered after
searching, openfirmware handles vbios differently (ie: no checksums, smaller
vbios, etc).  I found a nv34 openfirmware bios someone else dumped and nvbios
is unable to decode the GPIO section.

However, if the aim is ensuring the device has a backlight, I believe it&#39;s
already done.  In nouveau_backlight_init, it first checks to ensure there&#39;s a
display on either LVDS or eDP.  Can we not reasonably assume that if the gpu
has a LVDS or eDP panel attached that it also has a backlight?  My init
function is a slightly altered version of the existing nv40_backlight_init
function which doesn&#39;t have a backlight check either.</pre>
        </div>
      </p>


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Attachment #125562
backlight control w/ gpio check	patch	2016-08-05 18:17:52 UTC	2.95 KB	no flags	Details

Attachment #125642
backlight control w/ gpio check	patch	2016-08-09 14:59:27 UTC	3.03 KB	no flags	Details

Attachment #125817
backlight control w/ gpio check	patch	2016-08-16 14:06:11 UTC	2.73 KB	no flags	Details

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