clk: samsung: allow building the clkout driver as module
The Exynos clock output driver can be built as module (it does not have
to be part of core init process) for better customization. Adding a
KConfig entry allows also compile testing for build coverage.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Link: https://lore.kernel.org/r/20201110193749.261367-1-krzk@kernel.org
diff --git a/drivers/clk/samsung/Kconfig b/drivers/clk/samsung/Kconfig
index 57d4b3f..7e9c186 100644
--- a/drivers/clk/samsung/Kconfig
+++ b/drivers/clk/samsung/Kconfig
@@ -19,6 +19,16 @@
on some Exynos SoC variants. Choose M or Y here if you want to
use audio devices such as I2S, PCM, etc.
+config EXYNOS_CLKOUT
+ tristate "Samsung Exynos clock output driver"
+ depends on COMMON_CLK_SAMSUNG
+ default y if ARCH_EXYNOS
+ help
+ Support for the clock output (XCLKOUT) present on some of Exynos SoC
+ variants. Usually the XCLKOUT is used to monitor the status of the
+ certains clocks from SoC, but it could also be tied to other devices
+ as an input clock.
+
# For S3C24XX platforms, select following symbols:
config S3C2410_COMMON_CLK
bool "Samsung S3C2410 clock controller support" if COMPILE_TEST
diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile
index 1a4e6b7..6891b08 100644
--- a/drivers/clk/samsung/Makefile
+++ b/drivers/clk/samsung/Makefile
@@ -15,7 +15,7 @@
obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5-subcmu.o
obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos5433.o
obj-$(CONFIG_EXYNOS_AUDSS_CLK_CON) += clk-exynos-audss.o
-obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-clkout.o
+obj-$(CONFIG_EXYNOS_CLKOUT) += clk-exynos-clkout.o
obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7.o
obj-$(CONFIG_S3C2410_COMMON_CLK)+= clk-s3c2410.o
obj-$(CONFIG_S3C2410_COMMON_DCLK)+= clk-s3c2410-dclk.o
diff --git a/drivers/clk/samsung/clk-exynos-clkout.c b/drivers/clk/samsung/clk-exynos-clkout.c
index f5f8a95..9ec2f40 100644
--- a/drivers/clk/samsung/clk-exynos-clkout.c
+++ b/drivers/clk/samsung/clk-exynos-clkout.c
@@ -72,6 +72,7 @@
.data = &exynos_clkout_exynos5,
}, { }
};
+MODULE_DEVICE_TABLE(of, exynos_clkout_ids);
/*
* Device will be instantiated as child of PMU device without its own
