[PATCH 0/5] fbdev: Move framebuffer I/O helpers to

Thomas Zimmermann
2023-04-26T13:04:31Z

Fbdev provides helpers for framebuffer I/O, such as fb_readl(),
fb_writel() or fb_memcpy_to_fb(). The implementation of each helper
depends on the architecture. It's still all located in fbdev's main
header file <linux/fb.h>. Move all of it into each archtecture's
<asm/fb.h>, with shared code in <asm-generic/fb.h>.

The first patch a simple whitespace cleanup.

Until now, <linux/fb.h> contained an include of <asm/io.h>. As this
will go away patches 2 to 4 prepare include statements in the various
drivers. Source files that use regular I/O helpers, such as readl(),
now include <linux/io.h>. Source files that use framebuffer I/O
helpers, such as fb_readl(), now include <asm/fb.h>. The latter now
includes <linux/io.h> internally.

Patch 5 moves the framebuffer I/O helpers from <linux/fb.h> into
the various architecture headers. The common case, where the framebuffer
is located in I/O memory, serves as the generic implemenation.

The patchset has been built for a variety of platforms, such as x86-64,
arm, aarch64, ppc64, parisc, m64k, mips and sparc.

Thomas Zimmermann (5):
fbdev/matrox: Remove trailing whitespaces
ipu-v3: Include <linux/io.h>
fbdev: Include <linux/io.h> in various drivers
fbdev: Include <linux/io.h> via <asm/fb.h>
fbdev: Move framebuffer I/O helpers into <asm/fb.h>

arch/arc/include/asm/fb.h | 29 +++++++
arch/ia64/include/asm/fb.h | 28 +++++++
arch/loongarch/include/asm/fb.h | 29 +++++++
arch/m68k/include/asm/fb.h | 29 +++++++
arch/sparc/include/asm/fb.h | 77 +++++++++++++++++
drivers/gpu/ipu-v3/ipu-prv.h | 1 +
drivers/video/fbdev/arcfb.c | 1 +
drivers/video/fbdev/arkfb.c | 2 +
drivers/video/fbdev/aty/atyfb.h | 2 +
drivers/video/fbdev/aty/mach64_cursor.c | 2 +-
drivers/video/fbdev/chipsfb.c | 1 +
drivers/video/fbdev/cirrusfb.c | 2 +
drivers/video/fbdev/core/cfbcopyarea.c | 2 +-
drivers/video/fbdev/core/cfbfillrect.c | 1 +
drivers/video/fbdev/core/cfbimgblt.c | 1 +
drivers/video/fbdev/core/svgalib.c | 3 +-
drivers/video/fbdev/cyber2000fb.c | 2 +
drivers/video/fbdev/ep93xx-fb.c | 2 +
drivers/video/fbdev/hgafb.c | 3 +-
drivers/video/fbdev/hitfb.c | 2 +-
drivers/video/fbdev/kyro/fbdev.c | 3 +-
drivers/video/fbdev/matrox/matroxfb_accel.c | 8 +-
drivers/video/fbdev/matrox/matroxfb_base.h | 6 +-
drivers/video/fbdev/pm2fb.c | 3 +
drivers/video/fbdev/pm3fb.c | 2 +
drivers/video/fbdev/pvr2fb.c | 2 +
drivers/video/fbdev/s3fb.c | 2 +
drivers/video/fbdev/sm712fb.c | 2 +
drivers/video/fbdev/sstfb.c | 2 +-
drivers/video/fbdev/stifb.c | 2 +
drivers/video/fbdev/tdfxfb.c | 3 +-
drivers/video/fbdev/tridentfb.c | 2 +
drivers/video/fbdev/vga16fb.c | 3 +-
drivers/video/fbdev/vt8623fb.c | 2 +
drivers/video/fbdev/wmt_ge_rops.c | 2 +
include/asm-generic/fb.h | 93 +++++++++++++++++++++
include/linux/fb.h | 53 ------------
37 files changed, 340 insertions(+), 69 deletions(-)

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2.40.0