clk: renesas: Provide Kconfig symbols for CPG/MSSR and CPG/MSTP support

Currently the decision whether to build the renesas-cpg-mssr and
clk-mstp drivers is handled by Makefile logic.  However, the rcar-sysc
driver will need to know whether CPG/MSSR and/or CPG/MSTP support are
available or not.

To avoid having to duplicate this logic, move it to Kconfig. Provide
non-visible CLK_RENESAS_CPG_MSSR and CLK_RENESAS_CPG_MSTP Kconfig
symbols, which can be used by both Makefiles and C code.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

3 files changed, 31 insertions, 12 deletions

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 16f7d33421d8..c45554957499 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -201,6 +201,7 @@ source "drivers/clk/bcm/Kconfig"
 source "drivers/clk/hisilicon/Kconfig"
 source "drivers/clk/mvebu/Kconfig"
 source "drivers/clk/qcom/Kconfig"
+source "drivers/clk/renesas/Kconfig"
 source "drivers/clk/samsung/Kconfig"
 source "drivers/clk/tegra/Kconfig"
 source "drivers/clk/ti/Kconfig"
diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
new file mode 100644
index 000000000000..2115ce410cfb
--- /dev/null
+++ b/drivers/clk/renesas/Kconfig
@@ -0,0 +1,16 @@
+config CLK_RENESAS_CPG_MSSR
+        bool
+        default y if ARCH_R8A7795
+
+config CLK_RENESAS_CPG_MSTP
+        bool
+        default y if ARCH_R7S72100
+        default y if ARCH_R8A73A4
+        default y if ARCH_R8A7740
+        default y if ARCH_R8A7778
+        default y if ARCH_R8A7779
+        default y if ARCH_R8A7790
+        default y if ARCH_R8A7791
+        default y if ARCH_R8A7793
+        default y if ARCH_R8A7794
+        default y if ARCH_SH73A0
diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index 7e2579b30326..ead8bb843524 100644
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -1,13 +1,15 @@
 obj-$(CONFIG_ARCH_EMEV2)                += clk-emev2.o
-obj-$(CONFIG_ARCH_R7S72100)             += clk-rz.o clk-mstp.o
-obj-$(CONFIG_ARCH_R8A73A4)              += clk-r8a73a4.o clk-mstp.o clk-div6.o
-obj-$(CONFIG_ARCH_R8A7740)              += clk-r8a7740.o clk-mstp.o clk-div6.o
-obj-$(CONFIG_ARCH_R8A7778)              += clk-r8a7778.o clk-mstp.o
-obj-$(CONFIG_ARCH_R8A7779)              += clk-r8a7779.o clk-mstp.o
-obj-$(CONFIG_ARCH_R8A7790)              += clk-rcar-gen2.o clk-mstp.o clk-div6.o
-obj-$(CONFIG_ARCH_R8A7791)              += clk-rcar-gen2.o clk-mstp.o clk-div6.o
-obj-$(CONFIG_ARCH_R8A7793)              += clk-rcar-gen2.o clk-mstp.o clk-div6.o
-obj-$(CONFIG_ARCH_R8A7794)              += clk-rcar-gen2.o clk-mstp.o clk-div6.o
-obj-$(CONFIG_ARCH_R8A7795)              += renesas-cpg-mssr.o \
-                                           r8a7795-cpg-mssr.o clk-div6.o
-obj-$(CONFIG_ARCH_SH73A0)               += clk-sh73a0.o clk-mstp.o clk-div6.o
+obj-$(CONFIG_ARCH_R7S72100)             += clk-rz.o
+obj-$(CONFIG_ARCH_R8A73A4)              += clk-r8a73a4.o clk-div6.o
+obj-$(CONFIG_ARCH_R8A7740)              += clk-r8a7740.o clk-div6.o
+obj-$(CONFIG_ARCH_R8A7778)              += clk-r8a7778.o
+obj-$(CONFIG_ARCH_R8A7779)              += clk-r8a7779.o
+obj-$(CONFIG_ARCH_R8A7790)              += clk-rcar-gen2.o clk-div6.o
+obj-$(CONFIG_ARCH_R8A7791)              += clk-rcar-gen2.o clk-div6.o
+obj-$(CONFIG_ARCH_R8A7793)              += clk-rcar-gen2.o clk-div6.o
+obj-$(CONFIG_ARCH_R8A7794)              += clk-rcar-gen2.o clk-div6.o
+obj-$(CONFIG_ARCH_R8A7795)              += r8a7795-cpg-mssr.o
+obj-$(CONFIG_ARCH_SH73A0)               += clk-sh73a0.o clk-div6.o
+
+obj-$(CONFIG_CLK_RENESAS_CPG_MSSR)      += renesas-cpg-mssr.o clk-div6.o
+obj-$(CONFIG_CLK_RENESAS_CPG_MSTP)      += clk-mstp.o