[Bug 17902] [830M] need support for DVO-LVDS via na2501

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=17902

--- Comment #67 from Gilles Dartiguelongue <gilles.dartiguelongue at esiee.org> 2012-04-17 15:45:56 PDT ---
Ok, forget that, I rebooted without kms disabled and now I get 28 i2c/smbus
devices (most likely duplicates). Now scanning:

i2c-9    i2c           i915 gmbus dpb                      I2C adapter
i2c-10    i2c           i915 GPIOE                          I2C adapter

gives:

# i2cdetect -y 9
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- 38 -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

and 

# i2cdump -y 9 0x38
No size specified (using byte-data access)
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 05 13 26 67 01 a5 19 a2 31 97 81 ff 00 04 00 00    ??&g????1??..?..
10: 00 a0 02 02 02 02 02 02 07 00 00 11 54 03 02 40    .????????..?T??@
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
30: 00 00 00 00 03 ff 00 28 88 88 00 00 00 00 00 00    ....?..(??......
40: 80 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00    ?..?............
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
60: 11 00 00 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0    ?..?????????????
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 18 00    ..............?.
80: ff 07 3d 05 00 00 00 00 00 00 00 00 10 02 10 00    .?=?........???.
90: ff 07 a0 02 00 00 05 00 00 00 88 00 24 00 25 03    .???..?...?.$.%?
a0: 28 01 28 05 84 00 00 00 00 04 70 4f 00 00 03 03    (?(??....?pO..??
b0: 00 00 00 00 00 00 09 03 00 a0 00 20 33 33 33 33    ......??.?. 3333
c0: 05 90 00 0f 03 16 00 02 02 00 00 00 00 00 00 00    ??.???.??.......
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 98 00 80 00 00 00 80 00 00 00 00 00 00 00    ..?.?...?.......
f0: 71 77 b3 90 00 00 00 88 0a 0f 0a 0a 0a 0a 0a 0a    qw??...?????????

So 1305 and 6726 actually look like the first registers indicated in the
datasheet.

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