summaryrefslogtreecommitdiff
path: root/lib/Makefile
diff options
context:
space:
mode:
authorJohannes Berg <johannes.berg@intel.com>2021-03-05 15:19:52 +0300
committerRichard Weinberger <richard@nod.at>2021-06-17 22:44:51 +0300
commitca2e334232b6cd4ae5af9da2df83c009d042aefb (patch)
tree1827fb3faf57865ec599ee74e574a2bfd6a45edd /lib/Makefile
parent0bbadafdc49d11a1836e5946f517d18cceaea6c8 (diff)
downloadlinux-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/Makefile2
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