gxt4500: Use arch_phys_wc_* for framebuffer
Add arch_phys_wc_* calls to allow write-combining using MTRR.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/fbdev/gxt4500.c b/drivers/video/fbdev/gxt4500.c
index 3ceddb8..31de650 100644
--- a/drivers/video/fbdev/gxt4500.c
+++ b/drivers/video/fbdev/gxt4500.c
@@ -142,7 +142,7 @@
struct gxt4500_par {
void __iomem *regs;
-
+ int wc_cookie;
int pixfmt; /* pixel format, see DFA_PIX_* values */
/* PLL parameters */
@@ -671,6 +671,9 @@
pci_set_drvdata(pdev, info);
+ par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
+ info->fix.smem_len);
+
#ifdef __BIG_ENDIAN
/* Set byte-swapping for DFA aperture for all pixel sizes */
pci_write_config_dword(pdev, CFG_ENDIAN0, 0x333300);
@@ -735,6 +738,7 @@
return;
par = info->par;
unregister_framebuffer(info);
+ arch_phys_wc_del(par->wc_cookie);
fb_dealloc_cmap(&info->cmap);
iounmap(par->regs);
iounmap(info->screen_base);