viafb: fix IGA1 modesetting on VX900



Even if the documentation calls this bit "Reserved" it has to be set
to 0 for correct modesetting on IGA1.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: stable@vger.kernel.org

parent 050f0e02

drivers/video/via/hw.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1810,6 +1810,9 @@ static void hw_init(void)
		break;
		}

		/* magic required on VX900 for correct modesetting on IGA1 */
		via_write_reg_mask(VIACR, 0x45, 0x00, 0x01);

		/* probably this should go to the scaling code one day */
		via_write_reg_mask(VIACR, 0xFD, 0, 0x80); /* VX900 hw scale on IGA2 */
		viafb_write_regx(scaling_parameters, ARRAY_SIZE(scaling_parameters));