simplefb: use write-combined remapping
Framebuffers shouldn't be cached and it is usually very uncommon to read them. Therefore, use ioremap_wc() to get significant speed improvements on systems which provide it. On all other systems it's aliased to ioremap_nocache() which is also fine. Reported-by: Tom Gundersen <teg@jklm.no> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Tested-by: Tom Gundersen <teg@jklm.no> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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@ -219,7 +219,7 @@ static int simplefb_probe(struct platform_device *pdev)
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info->fbops = &simplefb_ops;
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info->flags = FBINFO_DEFAULT | FBINFO_MISC_FIRMWARE;
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info->screen_base = ioremap(info->fix.smem_start,
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info->screen_base = ioremap_wc(info->fix.smem_start,
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info->fix.smem_len);
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if (!info->screen_base) {
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framebuffer_release(info);
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