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https://git.openwrt.org/openwrt/openwrt.git
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fd5c168701
This reduces the needed modifications to the mainline Linux kernel and also makes the regmap package work with an out of tree kernel which does not have these modifications. The regmap-core is only added when it is really build as a module. The regmap-core is normally bool so it cannot be built as a module in an unmodified kernel. When it is selected by on other kernel module it will always be selected as build in and it also does not show up in $(LINUX_DIR)/modules.builtin as it is not supposed to be a kernel module. When it is not in $(LINUX_DIR)/modules.builtin the build system expects it to be built as a .ko file. Just check if the module is really there and only add it in that case. This splits the regmap package into multiple packages, one for each bus type. This way only the bus maps which are really needed have to be added. This also splits the I2C, SPI and MMIO regmap into separate packages to not require all these subsystems to build them, on an unmodified upstream kernel this also causes problems in some situations. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
84 lines
2.0 KiB
Diff
84 lines
2.0 KiB
Diff
--- a/drivers/base/regmap/Kconfig
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+++ b/drivers/base/regmap/Kconfig
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@@ -3,9 +3,8 @@
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# subsystems should select the appropriate symbols.
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config REGMAP
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- default y if (REGMAP_I2C || REGMAP_SPI || REGMAP_SPMI || REGMAP_MMIO || REGMAP_IRQ)
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select IRQ_DOMAIN if REGMAP_IRQ
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- bool
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+ tristate
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config REGCACHE_COMPRESSED
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select LZO_COMPRESS
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@@ -14,18 +13,24 @@ config REGCACHE_COMPRESSED
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config REGMAP_I2C
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tristate
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+ select REGMAP
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depends on I2C
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config REGMAP_SPI
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tristate
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+ select REGMAP
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+ depends on SPI_MASTER
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depends on SPI
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config REGMAP_SPMI
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+ select REGMAP
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tristate
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depends on SPMI
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config REGMAP_MMIO
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tristate
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+ select REGMAP
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config REGMAP_IRQ
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+ select REGMAP
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bool
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--- a/include/linux/regmap.h
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+++ b/include/linux/regmap.h
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@@ -49,7 +49,7 @@ struct reg_default {
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unsigned int def;
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};
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-#ifdef CONFIG_REGMAP
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+#if IS_ENABLED(CONFIG_REGMAP)
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enum regmap_endian {
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/* Unspecified -> 0 -> Backwards compatible default */
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--- a/drivers/base/regmap/Makefile
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+++ b/drivers/base/regmap/Makefile
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@@ -1,7 +1,11 @@
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-obj-$(CONFIG_REGMAP) += regmap.o regcache.o
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-obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-flat.o
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-obj-$(CONFIG_REGCACHE_COMPRESSED) += regcache-lzo.o
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-obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
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+regmap-core-objs = regmap.o regcache.o regcache-rbtree.o regcache-flat.o
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+ifdef CONFIG_DEBUG_FS
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+regmap-core-objs += regmap-debugfs.o
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+endif
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+ifdef CONFIG_REGCACHE_COMPRESSED
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+regmap-core-objs += regcache-lzo.o
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+endif
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+obj-$(CONFIG_REGMAP) += regmap-core.o
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obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o
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obj-$(CONFIG_REGMAP_SPI) += regmap-spi.o
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obj-$(CONFIG_REGMAP_SPMI) += regmap-spmi.o
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--- a/drivers/base/regmap/regmap.c
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+++ b/drivers/base/regmap/regmap.c
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@@ -13,6 +13,7 @@
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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+#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/err.h>
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#include <linux/of.h>
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@@ -2630,3 +2631,5 @@ static int __init regmap_initcall(void)
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return 0;
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}
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postcore_initcall(regmap_initcall);
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+
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+MODULE_LICENSE("GPL");
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