[PATCH] drm/mgag200: Fix PLL setup for g200wb and g200ew

[Jocelyn Falempe]

commit f86c3ed55920ca1d874758cc290890902a6cffc4 ("drm/mgag200: Split PLL
setup into compute and update functions") introduced a regression for
g200wb and g200ew.
The PLLs are not set up properly, and VGA screen stays
black, or displays "out of range" message.

MGA1064_WB_PIX_PLLC_N/M/P was mistakenly replaced with
MGA1064_PIX_PLLC_N/M/P which have different addresses.

Patch tested on a Dell T310 with g200wb

Fixes: f86c3ed55920ca1d874758cc290890902a6cffc4
Cc: stable at vger.kernel.org
Signed-off-by: Jocelyn Falempe <jfalempe at redhat.com>
---
 drivers/gpu/drm/mgag200/mgag200_pll.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/mgag200/mgag200_pll.c b/drivers/gpu/drm/mgag200/mgag200_pll.c
index e9ae22b4f813..52be08b744ad 100644
--- a/drivers/gpu/drm/mgag200/mgag200_pll.c
+++ b/drivers/gpu/drm/mgag200/mgag200_pll.c
@@ -404,9 +404,9 @@ mgag200_pixpll_update_g200wb(struct mgag200_pll *pixpll, const struct mgag200_pl
 		udelay(50);
 
 		/* program pixel pll register */
-		WREG_DAC(MGA1064_PIX_PLLC_N, xpixpllcn);
-		WREG_DAC(MGA1064_PIX_PLLC_M, xpixpllcm);
-		WREG_DAC(MGA1064_PIX_PLLC_P, xpixpllcp);
+		WREG_DAC(MGA1064_WB_PIX_PLLC_N, xpixpllcn);
+		WREG_DAC(MGA1064_WB_PIX_PLLC_M, xpixpllcm);
+		WREG_DAC(MGA1064_WB_PIX_PLLC_P, xpixpllcp);
 
 		udelay(50);
 
-- 
2.35.1