Hi Luc, > On Tue, Jun 28, 2016 at 04:08:05AM +0000, Kevin Brace wrote: > > commit ed68b1e9428b96b2c3ec4dc56625579bf531bc63 > > Author: Kevin Brace <kevinbr...@gmx.com> > > Date: Mon Jun 27 22:58:54 2016 -0500 > > > > Using SR01[5] to turn off analog VGA output rather than CR47[2] > > > > CR47[2] (3X5.47[2]) is the ???back door??? register to turn off analog > > VGA output. Will rather use the ???front door??? version of it located > > at SR01[5] (3C5.01[5]). > > > > Signed-off-by: Kevin Brace <kevinbr...@gmx.com> > > > > diff --git a/src/via_outputs.c b/src/via_outputs.c > > index bc516c8..e7f2ab7 100644 > > --- a/src/via_outputs.c > > +++ b/src/via_outputs.c > > @@ -520,11 +520,10 @@ viaAnalogOutput(ScrnInfoPtr pScrn, Bool displayState) > > DEBUG(xf86DrvMsg(pScrn->scrnIndex, X_INFO, > > "Entered viaAnalogOutput.\n")); > > > > - /* This register controls analog VGA DAC output state. */ > > - /* 3X5.47[2] - DACOFF Backdoor Register > > + /* 3C5.01[5] - DACOFF Register > > * 0: DAC on > > * 1: DAC off */ > > - ViaCrtcMask(hwp, 0x47, displayState ? 0x00 : 0x04, 0x04); > > + ViaSeqMask(hwp, 0x01, displayState ? 0x00 : 0x20, 0x20); > > xf86DrvMsg(pScrn->scrnIndex, X_INFO, > > "Analog VGA Output: %s\n", > > displayState ? "On" : "Off"); > > You definitely are confusing the VGA chip standard with the VGA > connection standard here. > > Read up on what the vga sequencer does. > > Luc Verhaegen. >
The commit appears to be working. I tested it with CLE266, VX700, and VN896 chipsets. SR01[5] does turn off IGA1 (display controller 1). I also experimented this with via_regs_dump tool. Regards, Kevin Brace _______________________________________________ Openchrome-devel mailing list Openchrome-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/openchrome-devel
