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authorFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2012-02-22 18:53:08 +0000
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2012-02-24 00:38:14 +0000
commite29206381a1436e0f47c0f5b9a23159a03c57715 (patch)
tree128b7342ce53bdcee4885aa8ae1cc632639287c9 /drivers/video/via
parent050f0e02c8dc38b2b4f2df345ac760d22ca5c7ba (diff)
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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
Diffstat (limited to 'drivers/video/via')
-rw-r--r--drivers/video/via/hw.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c
index 8bdf80e270e2..8497727d66de 100644
--- a/drivers/video/via/hw.c
+++ b/drivers/video/via/hw.c
@@ -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));