Commit 99d054d8 authored by Ondrej Zary's avatar Ondrej Zary Committed by Paul Mundt

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: default avatarOndrej Zary <linux@rainbow-software.org>
Acked-by: default avatarOndrej Zajicek <santiago@crfreenet.org>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 6a2f6d5e
...@@ -1053,6 +1053,14 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i ...@@ -1053,6 +1053,14 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i
goto err_find_mode; 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); rc = fb_alloc_cmap(&info->cmap, 256, 0);
if (rc < 0) { if (rc < 0) {
dev_err(info->device, "cannot allocate colormap\n"); dev_err(info->device, "cannot allocate colormap\n");
......
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