[Nouveau] [Bug 14597] randr12 failures on 12" powerbooks, and workarounds

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=14597





--- Comment #21 from Jacopo <sbriglie at gmail.com>  2008-03-02 10:01:43 PST ---
(In reply to comment #20)
> (In reply to comment #19)
> > Following some work by sbriglie, it now looks like the change in comment 15
> > might be sufficient (with or without the change to reg 0x1588). Testing of this
> > idea welcome :)
> > 
> 
> After some testing I can say that the working code is this
> 
> @@ -2824,11 +2824,17 @@ static void call_lvds_manufacturer_script(ScrnInfoPtr
> pS
>         xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Calling LVDS script %d:\n",
> script
>         nv_idx_port_wr(pScrn, CRTC_INDEX_COLOR, NV_VGA_CRTCX_OWNER,
>                    head ? NV_VGA_CRTCX_OWNER_HEADB : NV_VGA_CRTCX_OWNER_HEADA);
> -       parse_init_table(pScrn, bios, scriptofs, &iexec);
> +       //parse_init_table(pScrn, bios, scriptofs, &iexec);
> 
>         if (script == LVDS_PANEL_OFF)
>                 usleep(off_on_delay * 1000);
>         if (script == LVDS_RESET)
> +               nv32_wr(pScrn, 0x006828b4, 0x72);
> +               //nv32_wr(pScrn, 0x006828b0, 0x02);
> +               nv32_wr(pScrn, 0x006828b4, 0x01);
> +               nv32_wr(pScrn, 0x006828b0, 0x2f);
> +               nv32_wr(pScrn, 0x00001588, 0);  
> +               
>                 link_head_and_output(pScrn, head, dcb_entry);
>  }
> 
> Enabling the second nv32_wr and/or the call to parse_init_table causes the
> usual badness
> 

Of course I forgot the brackets. The correct code is
if (script == LVDS_RESET){
               nv32_wr(pScrn, 0x006828b4, 0x72);
               //nv32_wr(pScrn, 0x006828b0, 0x02);
               nv32_wr(pScrn, 0x006828b4, 0x01);
               nv32_wr(pScrn, 0x006828b0, 0x2f);
               nv32_wr(pScrn, 0x00001588, 0);  

                 link_head_and_output(pScrn, head, dcb_entry);
 }


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