From: Anson Huang <redacted>
Sent: Tuesday, June 9, 2020 3:32 PM

There are more and more requirements of building SoC specific drivers as
modules, add support for building SCU clock driver as module to meet the
requirement.

Signed-off-by: Anson Huang <redacted>
---
Changes since V1:
	- add ARCH_MXC to build dependency to avoid build fail on x86 arch;
	- move clk-lpcg-scu.c change in to this patch.
---
 drivers/clk/imx/Kconfig        | 4 ++--
 drivers/clk/imx/Makefile       | 5 ++---
 drivers/clk/imx/clk-lpcg-scu.c | 1 +
 drivers/clk/imx/clk-scu.c      | 5 +++++
 4 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig index

db0253f..ded0643 100644

--- a/drivers/clk/imx/Kconfig
+++ b/drivers/clk/imx/Kconfig

@@ -5,8 +5,8 @@ config MXC_CLK
 	def_bool ARCH_MXC

 config MXC_CLK_SCU
-	bool
-	depends on IMX_SCU

+	depends on ARCH_MXC && IMX_SCU

 config CLK_IMX8MM
 	bool "IMX8MM CCM Clock Driver"

diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index

928f874..1af8cff 100644

--- a/drivers/clk/imx/Makefile
+++ b/drivers/clk/imx/Makefile

@@ -21,9 +21,8 @@ obj-$(CONFIG_MXC_CLK) += \
 	clk-sscg-pll.o \
 	clk-pll14xx.o

-obj-$(CONFIG_MXC_CLK_SCU) += \
-	clk-scu.o \
-	clk-lpcg-scu.o
+mxc-clk-scu-objs += clk-scu.o clk-lpcg-scu.o
+obj-$(CONFIG_MXC_CLK_SCU) += mxc-clk-scu.o

 obj-$(CONFIG_CLK_IMX8MM) += clk-imx8mm.o
 obj-$(CONFIG_CLK_IMX8MN) += clk-imx8mn.o diff --git
a/drivers/clk/imx/clk-lpcg-scu.c b/drivers/clk/imx/clk-lpcg-scu.c index
a73a799..8177f0e 100644

--- a/drivers/clk/imx/clk-lpcg-scu.c
+++ b/drivers/clk/imx/clk-lpcg-scu.c

@@ -114,3 +114,4 @@ struct clk_hw *imx_clk_lpcg_scu(const char *name,

const char *parent_name,

 	return hw;
 }
+EXPORT_SYMBOL_GPL(imx_clk_lpcg_scu);

diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c index

b8b2072..9688981 100644

--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c

@@ -8,6 +8,7 @@
 #include <linux/arm-smccc.h>
 #include <linux/clk-provider.h>
 #include <linux/err.h>
+#include <linux/module.h>
 #include <linux/slab.h>

 #include "clk-scu.h"

@@ -132,6 +133,7 @@ int imx_clk_scu_init(void)  {
 	return imx_scu_get_handle(&ccm_ipc_handle);
 }
+EXPORT_SYMBOL_GPL(imx_clk_scu_init);

 /*
  * clk_scu_recalc_rate - Get clock rate for a SCU clock @@ -387,3 +389,6 @@

struct clk_hw *__imx_clk_scu(const char *name, const char * const *parents,

 	return hw;
 }
+EXPORT_SYMBOL_GPL(__imx_clk_scu);
+
+MODULE_LICENSE("GPL v2");
--
2.7.4