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linux-stable/include/video
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Luis R. Rodriguez cc9866eb94 video: fbdev: tdfxfb: use arch_phys_wc_add() and ioremap_wc() 
This driver uses the same area for MTRR as for the ioremap().
Convert the driver from using the x86 specific MTRR code to
the architecture agnostic arch_phys_wc_add(). arch_phys_wc_add()
will avoid MTRR if write-combining is available, in order to
take advantage of that also ensure the ioremap'd area is requested
as write-combining.

There are a few motivations for this:

a) Take advantage of PAT when available

b) Help bury MTRR code away, MTRR is architecture specific and on
   x86 its replaced by PAT

c) Help with the goal of eventually using _PAGE_CACHE_UC over
   _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (see commit
   de33c442e titled "x86 PAT: fix performance drop for glx,
   use UC minus for ioremap(), ioremap_nocache() and
   pci_mmap_page_range()")

The conversion done is expressed by the following Coccinelle
SmPL patch, it additionally required manual intervention to
address all the #ifdery and removal of redundant things which
arch_phys_wc_add() already addresses such as verbose message
about when MTRR fails and doing nothing when we didn't get
an MTRR.

@ mtrr_found @
expression index, base, size;
@@

-index = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1);
+index = arch_phys_wc_add(base, size);

@ mtrr_rm depends on mtrr_found @
expression mtrr_found.index, mtrr_found.base, mtrr_found.size;
@@

-mtrr_del(index, base, size);
+arch_phys_wc_del(index);

@ mtrr_rm_zero_arg depends on mtrr_found @
expression mtrr_found.index;
@@

-mtrr_del(index, 0, 0);
+arch_phys_wc_del(index);

@ mtrr_rm_fb_info depends on mtrr_found @
struct fb_info *info;
expression mtrr_found.index;
@@

-mtrr_del(index, info->fix.smem_start, info->fix.smem_len);
+arch_phys_wc_del(index);

@ ioremap_replace_nocache depends on mtrr_found @
struct fb_info *info;
expression base, size;
@@

-info->screen_base = ioremap_nocache(base, size);
+info->screen_base = ioremap_wc(base, size);

@ ioremap_replace_default depends on mtrr_found @
struct fb_info *info;
expression base, size;
@@

-info->screen_base = ioremap(base, size);
+info->screen_base = ioremap_wc(base, size);

Generated-by: Coccinelle SmPL
Cc: Rob Clark <robdclark@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-06-03 12:41:52 +03:00
..
atmel_lcdc.h video: atmel_lcdfb: pass the pdata as params 2013-09-27 09:26:20 +03:00
aty128.h
auo_k190xfb.h AUO-K190x: Add resolutions for portrait displays 2013-04-04 13:08:07 +03:00
broadsheetfb.h
cirrus.h
cvisionppc.h
da8xx-fb.h video: da8xx-fb: improve readability of code 2013-08-09 14:02:42 +03:00
display_timing.h video: display_timing: add doubleclk flag 2013-06-03 18:42:32 +10:00
edid.h UAPI: (Scripted) Disintegrate include/video 2012-12-20 17:14:26 +00:00
exynos7_decon.h drm/exynos: Add DECON driver 2015-02-11 20:27:08 +09:00
exynos_mipi_dsim.h video: exynos_mipi_dsim: Use the generic PHY driver 2013-10-16 13:48:08 -07:00
gbe.h
hecubafb.h
iga.h
ili9320.h
imx-ipu-v3.h drm/imx: consolidate bus format variable names 2015-03-31 11:59:34 +02:00
Kbuild UAPI: (Scripted) Disintegrate include/video 2012-12-20 17:14:26 +00:00
kyro.h Fix common misspellings 2011-03-31 11:26:23 -03:00
mach64.h
maxinefb.h
mbxfb.h
metronomefb.h
mipi_display.h
mmp_disp.h video: mmp: add pitch info in mmp_win structure 2013-09-20 12:52:33 +03:00
neomagic.h video: fbdev: neofb: use arch_phys_wc_add() and ioremap_wc() 2015-06-03 12:41:49 +03:00
newport.h Merge branch 'master' into for-next 2011-04-26 10:22:59 +02:00
of_display_timing.h videomode: provide dummy inline functions for !CONFIG_OF 2014-10-07 09:31:45 +03:00
of_videomode.h video: add of helper for display timings/videomode 2013-01-24 09:03:48 +01:00
omap-panel-data.h omapdss: Add new panel driver for Topolly td028ttec1 LCD. 2013-10-31 12:30:36 +02:00
omapdss.h fbdev changes for v4.1 2015-04-20 15:16:25 -07:00
omapvrfb.h OMAPDSS: VRFB: add omap_vrfb_supported() 2012-10-17 12:17:18 +03:00
permedia2.h
platform_lcd.h drivers/video/backlight/platform_lcd.c: introduce probe callback 2013-04-29 18:28:18 -07:00
pm3fb.h
pmag-ba-fb.h
pmagb-b-fb.h
pxa168fb.h video: pxa168fb: Cleanup pxa168fb.h file 2014-01-17 10:57:43 +02:00
radeon.h
s1d13xxxfb.h
sa1100fb.h FB: sa1100: remove global sa1100fb_.*_power function pointers 2012-02-21 11:56:19 +00:00
samsung_fimd.h drm/exynos: Enable DP clock to fix display on Exynos5250 and other 2015-04-13 11:39:42 +09:00
sh_mipi_dsi.h fbdev: sh_mipi_dsi: Remove the unused sh_mipi_dsi_info lcd_chan field 2012-11-21 15:50:01 +01:00
sh_mobile_hdmi.h fbdev: sh_mobile_hdmi: add HDMI Control Register support 2012-05-13 13:07:59 +00:00
sh_mobile_lcdc.h fbdev: sh_mobile_lcdc: Remove unused get_brightness pdata callback 2012-11-21 15:50:02 +01:00
sh_mobile_meram.h sh_mobile_meram: Add direct MERAM allocation API 2012-07-19 02:05:22 +02:00
sisfb.h UAPI: (Scripted) Disintegrate include/video 2012-12-20 17:14:26 +00:00
sstfb.h Fix common misspellings 2011-03-31 11:26:23 -03:00
tdfx.h video: fbdev: tdfxfb: use arch_phys_wc_add() and ioremap_wc() 2015-06-03 12:41:52 +03:00
tgafb.h
trident.h
udlfb.h udlfb: fix hcd_buffer_free panic on unplug/replug 2012-03-01 17:46:27 -08:00
uvesafb.h uvesafb: Clean up MTRR code 2013-05-31 13:37:36 +10:00
vga.h m68k/video: Create <asm/vga.h> 2012-04-22 20:16:50 +02:00
videomode.h videomode: videomode_from_timing work 2013-03-21 14:34:33 +02:00
w100fb.h