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authorJordan Crouse <jordan.crouse@amd.com>2006-12-08 02:40:56 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:29:08 -0800
commit58219896df521ddd749bee48a8465db69b6163f3 (patch)
tree12bacc56be8aa2bac5650e97b767e91bceaffe6c
parent53d53bd4ab3fd1498f728fa96635ab95d1ec8ba0 (diff)
[PATCH] gxfb: Turn on the flatpanel power and data
For Geode devices without a flatpanel aware BIOS, this enables the flatpanel power and data. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Acked-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/video/geode/video_gx.c13
-rw-r--r--drivers/video/geode/video_gx.h2
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/video/geode/video_gx.c b/drivers/video/geode/video_gx.c
index bee0741794a3..7f3f18d06718 100644
--- a/drivers/video/geode/video_gx.c
+++ b/drivers/video/geode/video_gx.c
@@ -220,7 +220,13 @@ gx_configure_tft(struct fb_info *info)
/* Set the dither control */
writel(0x70, par->vid_regs + GX_FP_DFC);
- /* Turn on the device */
+ /* Enable the FP data and power (in case the BIOS didn't) */
+
+ fp = readl(par->vid_regs + GX_DCFG);
+ fp |= GX_DCFG_FP_PWR_EN | GX_DCFG_FP_DATA_EN;
+ writel(fp, par->vid_regs + GX_DCFG);
+
+ /* Unblank the panel */
fp = readl(par->vid_regs + GX_FP_PM);
fp |= GX_FP_PM_P;
@@ -245,9 +251,12 @@ static void gx_configure_display(struct fb_info *info)
writel(misc, par->vid_regs + GX_MISC);
/* Write the display configuration */
-
dcfg = readl(par->vid_regs + GX_DCFG);
+ /* Disable hsync and vsync */
+ dcfg &= ~(GX_DCFG_VSYNC_EN | GX_DCFG_HSYNC_EN);
+ writel(dcfg, par->vid_regs + GX_DCFG);
+
/* Clear bits from existing mode. */
dcfg &= ~(GX_DCFG_CRT_SYNC_SKW_MASK
| GX_DCFG_CRT_HSYNC_POL | GX_DCFG_CRT_VSYNC_POL
diff --git a/drivers/video/geode/video_gx.h b/drivers/video/geode/video_gx.h
index 119d0abddb2d..ce28d8f382dc 100644
--- a/drivers/video/geode/video_gx.h
+++ b/drivers/video/geode/video_gx.h
@@ -25,6 +25,8 @@ extern struct geode_vid_ops gx_vid_ops;
# define GX_DCFG_HSYNC_EN 0x00000002
# define GX_DCFG_VSYNC_EN 0x00000004
# define GX_DCFG_DAC_BL_EN 0x00000008
+# define GX_DCFG_FP_PWR_EN 0x00000040
+# define GX_DCFG_FP_DATA_EN 0x00000080
# define GX_DCFG_CRT_HSYNC_POL 0x00000100
# define GX_DCFG_CRT_VSYNC_POL 0x00000200
# define GX_DCFG_CRT_SYNC_SKW_MASK 0x0001C000