[Unichrome-devel] QMatrix

[Brian <bst...@bi...>]

Since I can"t get any information from you to fix my driver, I"m considering
 to sign that NDA that you sent me. But then I thought about why I"m even
 considering writing this in the first place, and that is that the support you
 give your customers is below par. What if also your datasheets is below par?
 You can"t even answer a single simple question about using a poorly
 documented library api in a weeks notice, I see no reason to help your
 ignorant company gain market shares in the linux domain!
 
 Bye,
 Kenneth

Unfortunately Fiona is not the person to ask technical questions:-)
VIA is probably not so much against letting information out but more
likely, extremely inefficient and disorganised at doing so, anyway
here is some code from Andreas Robinson of DirectFB that
was written from datasheet, its been availiable for some time.

    if (qmx->load_intra_quantiser_matrix) {
        *MPEG_IO(0x5c) = 0;
        for (j = 0; j < 64; j += 4) {
            *MPEG_IO(0x60) =
                qmx->intra_quantiser_matrix[j] |
                (qmx->intra_quantiser_matrix[j+1] << 8) |
                (qmx->intra_quantiser_matrix[j+2] << 16) |
                (qmx->intra_quantiser_matrix[j+3] << 24);
        }
    }

    if (qmx->load_non_intra_quantiser_matrix) {
        *MPEG_IO(0x5c) = 1;
        for (j = 0; j < 64; j += 4) {
            *MPEG_IO(0x60) =
                qmx->non_intra_quantiser_matrix[j] |
                (qmx->non_intra_quantiser_matrix[j+1] << 8) |
                (qmx->non_intra_quantiser_matrix[j+2] << 16) |
                (qmx->non_intra_quantiser_matrix[j+3] << 24);
        }

a bit more readable than that VeXP crap :-)