diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2021-03-05 15:19:52 +0300 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2021-06-17 22:44:51 +0300 |
| commit | ca2e334232b6cd4ae5af9da2df83c009d042aefb (patch) | |
| tree | 1827fb3faf57865ec599ee74e574a2bfd6a45edd /lib/Makefile | |
| parent | 0bbadafdc49d11a1836e5946f517d18cceaea6c8 (diff) | |
| download | linux-ca2e334232b6cd4ae5af9da2df83c009d042aefb.tar.xz | |
lib: add iomem emulation (logic_iomem)
Add IO memory emulation that uses callbacks for read/write to
the allocated regions. The callbacks can be registered by the
users using logic_iomem_alloc().
To use, an architecture must 'select LOGIC_IOMEM' in Kconfig
and then include <asm-generic/logic_io.h> into asm/io.h to get
the __raw_read*/__raw_write* functions.
Optionally, an architecture may 'select LOGIC_IOMEM_FALLBACK'
in which case non-emulated regions will 'fall back' to the
various real_* functions that must then be provided.
Cc: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'lib/Makefile')
| -rw-r--r-- | lib/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Makefile b/lib/Makefile index 2cc359ec1fdd..fc38a55e6fe4 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -147,6 +147,8 @@ obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o lib-y += logic_pio.o +lib-$(CONFIG_INDIRECT_IOMEM) += logic_iomem.o + obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o obj-$(CONFIG_BTREE) += btree.o |