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Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/sm501fb.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index e1d6085..8c39e4d 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -1276,6 +1276,7 @@ static int sm501fb_start(struct sm501fb_info *info,
{
struct resource *res;
struct device *dev;
+ int k;
int ret;
info->dev = dev = &pdev->dev;
@@ -1337,6 +1338,13 @@ static int sm501fb_start(struct sm501fb_info *info,
info->fbmem_len = (res->end - res->start)+1;
+ /* clear framebuffer memory - avoids garbage data on unused fb */
+ memset(info->fbmem, 0, info->fbmem_len);
+
+ /* clear palette ram - undefined at power on */
+ for (k = 0; k < (256 * 3); k++)
+ writel(0, info->regs + SM501_DC_PANEL_PALETTE + (k * 4));
+
/* enable display controller */
sm501_unit_power(dev->parent, SM501_GATE_DISPLAY, 1);