diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/sm501fb.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c index e1d6085bc347..8c39e4d5b08f 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); |