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powerpc: Move Power Macintosh drivers to generic byteswappers

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ppc has special instruction forms to efficiently load and store values
in non-native endianness.  These can be accessed via the arch-specific
{ld,st}_le{16,32}() inlines in arch/powerpc/include/asm/swab.h.

However, gcc is perfectly capable of generating the byte-reversing
load/store instructions when using the normal, generic cpu_to_le*() and
le*_to_cpu() functions eaning the arch-specific functions don't have much
point.

Worse the "le" in the names of the arch specific functions is now
misleading, because they always generate byte-reversing forms, but some
ppc machines can now run a little-endian kernel.

To start getting rid of the arch-specific forms, this patch removes them
from all the old Power Macintosh drivers, replacing them with the
generic byteswappers.

Signed-off-by: David Gibson <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
This commit is contained in:
David Gibson 2015-02-03 16:36:21 +11:00 • committed by Benjamin Herrenschmidt
commit f571872671
13 changed files with 119 additions and 119 deletions
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2
drivers/video/fbdev/controlfb.c
View file

@ -315,7 +315,7 @@ static int controlfb_blank(int blank_mode, struct fb_info *info)
container_of(info, struct fb_info_control, info);
unsigned ctrl;
ctrl = ld_le32(CNTRL_REG(p,ctrl));
ctrl = le32_to_cpup(CNTRL_REG(p,ctrl));
if (blank_mode > 0)
switch (blank_mode) {
case FB_BLANK_VSYNC_SUSPEND:

2
drivers/video/fbdev/platinumfb.c
View file

@ -168,7 +168,7 @@ static int platinumfb_blank(int blank, struct fb_info *fb)
struct fb_info_platinum *info = (struct fb_info_platinum *) fb;
int ctrl;
ctrl = ld_le32(&info->platinum_regs->ctrl.r) | 0x33;
ctrl = le32_to_cpup(&info->platinum_regs->ctrl.r) | 0x33;
if (blank)
--blank_mode;
if (blank & VESA_VSYNC_SUSPEND)