diff options
| author | Ondrej Zary <linux@rainbow-software.org> | 2011-03-01 19:18:08 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-03-22 15:49:45 +0900 |
| commit | 99d054d8253b1dbc6ab2d4ebcb25ad4a4e6ba1c8 (patch) | |
| tree | 7571a36ec5b16ca6abd98c9c107f37b35d3faa34 /drivers/video/s3fb.c | |
| parent | 6a2f6d5e970afbc1b8b08bafae9d9138a3206960 (diff) | |
s3fb: maximize virtual vertical size for fast scrolling
Maximize virtual vertical framebuffer size during init to allow fast scrolling
(accelerated by panning).
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Ondrej Zajicek <santiago@crfreenet.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/video/s3fb.c')
| -rw-r--r-- | drivers/video/s3fb.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c index 55a94b94a32..9f9be9f37f2 100644 --- a/drivers/video/s3fb.c +++ b/drivers/video/s3fb.c @@ -1053,6 +1053,14 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i goto err_find_mode; } + /* maximize virtual vertical size for fast scrolling */ + info->var.yres_virtual = info->fix.smem_len * 8 / + (info->var.bits_per_pixel * info->var.xres_virtual); + if (info->var.yres_virtual < info->var.yres) { + dev_err(info->device, "virtual vertical size smaller than real\n"); + goto err_find_mode; + } + rc = fb_alloc_cmap(&info->cmap, 256, 0); if (rc < 0) { dev_err(info->device, "cannot allocate colormap\n"); |