From b5c26f97ec4a17c650055c83cfc1f2ee6d8818eb Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Tue, 23 Mar 2010 13:35:49 -0700 Subject: [PATCH] lxfb: set the H- and V-SYNC polarity of the flatpanel output Fixup for the flatpanel output. The geode_modedb attribute flags are used to set the SYNC polarity of the flatpanel. Without this patch our flatpanel registers stayed unconfigured, so we just saw garbage output. Signed-off-by: Michael Grzeschik Cc: Andres Salomon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/geode/lxfb.h | 2 ++ drivers/video/geode/lxfb_ops.c | 10 +++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/video/geode/lxfb.h b/drivers/video/geode/lxfb.h index cc781c00f75d..e4c4d89b7860 100644 --- a/drivers/video/geode/lxfb.h +++ b/drivers/video/geode/lxfb.h @@ -365,6 +365,8 @@ enum fp_registers { FP_CRC, /* 0x458 */ }; +#define FP_PT2_HSP (1 << 22) +#define FP_PT2_VSP (1 << 23) #define FP_PT2_SCRC (1 << 27) /* shfclk free */ #define FP_PM_P (1 << 24) /* panel power ctl */ diff --git a/drivers/video/geode/lxfb_ops.c b/drivers/video/geode/lxfb_ops.c index 0e5d8c7c3eba..bc35a95e59d4 100644 --- a/drivers/video/geode/lxfb_ops.c +++ b/drivers/video/geode/lxfb_ops.c @@ -274,7 +274,15 @@ static void lx_graphics_enable(struct fb_info *info) u32 msrlo, msrhi; write_fp(par, FP_PT1, 0); - write_fp(par, FP_PT2, FP_PT2_SCRC); + temp = FP_PT2_SCRC; + + if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) + temp |= FP_PT2_HSP; + + if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) + temp |= FP_PT2_VSP; + + write_fp(par, FP_PT2, temp); write_fp(par, FP_DFC, FP_DFC_BC); msrlo = MSR_LX_MSR_PADSEL_TFT_SEL_LOW;