clk: sunxi-ng: Allow drivers to be built as modules

While it is useful to build all of the CCU drivers at once, only 1-3 of
them will be loaded at a time, or possibly none of them if the kernel is
booted on a non-sunxi platform. These CCU drivers are relatively large;
32-bit drivers have 30-50k of data each, while the 64-bit ones are
50-75k due to the increased pointer overhead. About half of that data
comes from relocations. Let's allow the user to build these drivers as
modules so only the necessary data is loaded.

As a first step, convert the CCUs that are already platform drivers.

When the drivers are built as modules, normally the file name becomes
the module name. However, the current file names are inconsistent with
the <platform>-<peripheral> name used everywhere else: the devicetree
bindings, the platform driver names, and the Kconfig symbols. Use
Makfile logic to rename the modules so they follow the usual pattern.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20211119033338.25486-3-samuel@sholland.org

drivers/clk/sunxi-ng/Kconfig

@@ -13,22 +13,22 @@ config SUNIV_F1C100S_CCU
 	depends on MACH_SUNIV || COMPILE_TEST
 
 config SUN50I_A64_CCU
-	bool "Support for the Allwinner A64 CCU"
+	tristate "Support for the Allwinner A64 CCU"
 	default ARM64 && ARCH_SUNXI
 	depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
 
 config SUN50I_A100_CCU
-	bool "Support for the Allwinner A100 CCU"
+	tristate "Support for the Allwinner A100 CCU"
 	default ARM64 && ARCH_SUNXI
 	depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
 
 config SUN50I_A100_R_CCU
-	bool "Support for the Allwinner A100 PRCM CCU"
+	tristate "Support for the Allwinner A100 PRCM CCU"
 	default ARM64 && ARCH_SUNXI
 	depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
 
 config SUN50I_H6_CCU
-	bool "Support for the Allwinner H6 CCU"
+	tristate "Support for the Allwinner H6 CCU"
 	default ARM64 && ARCH_SUNXI
 	depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
 
@@ -69,7 +69,7 @@ config SUN8I_A33_CCU
 	depends on MACH_SUN8I || COMPILE_TEST
 
 config SUN8I_A83T_CCU
-	bool "Support for the Allwinner A83T CCU"
+	tristate "Support for the Allwinner A83T CCU"
 	default MACH_SUN8I
 	depends on MACH_SUN8I || COMPILE_TEST
 
@@ -84,16 +84,16 @@ config SUN8I_V3S_CCU
 	depends on MACH_SUN8I || COMPILE_TEST
 
 config SUN8I_DE2_CCU
-	bool "Support for the Allwinner SoCs DE2 CCU"
+	tristate "Support for the Allwinner SoCs DE2 CCU"
 	default MACH_SUN8I || (ARM64 && ARCH_SUNXI)
 
 config SUN8I_R40_CCU
-	bool "Support for the Allwinner R40 CCU"
+	tristate "Support for the Allwinner R40 CCU"
 	default MACH_SUN8I
 	depends on MACH_SUN8I || COMPILE_TEST
 
 config SUN9I_A80_CCU
-	bool "Support for the Allwinner A80 CCU"
+	tristate "Support for the Allwinner A80 CCU"
 	default MACH_SUN9I
 	depends on MACH_SUN9I || COMPILE_TEST
 

drivers/clk/sunxi-ng/Makefile

@@ -21,24 +21,46 @@ obj-y				+= ccu_nm.o
 obj-y				+= ccu_mp.o
 
 # SoC support
-obj-$(CONFIG_SUNIV_F1C100S_CCU)	+= ccu-suniv-f1c100s.o
-obj-$(CONFIG_SUN50I_A64_CCU)	+= ccu-sun50i-a64.o
-obj-$(CONFIG_SUN50I_A100_CCU)	+= ccu-sun50i-a100.o
-obj-$(CONFIG_SUN50I_A100_R_CCU)	+= ccu-sun50i-a100-r.o
-obj-$(CONFIG_SUN50I_H6_CCU)	+= ccu-sun50i-h6.o
-obj-$(CONFIG_SUN50I_H616_CCU)	+= ccu-sun50i-h616.o
-obj-$(CONFIG_SUN50I_H6_R_CCU)	+= ccu-sun50i-h6-r.o
-obj-$(CONFIG_SUN4I_A10_CCU)	+= ccu-sun4i-a10.o
-obj-$(CONFIG_SUN5I_CCU)		+= ccu-sun5i.o
-obj-$(CONFIG_SUN6I_A31_CCU)	+= ccu-sun6i-a31.o
-obj-$(CONFIG_SUN8I_A23_CCU)	+= ccu-sun8i-a23.o
-obj-$(CONFIG_SUN8I_A33_CCU)	+= ccu-sun8i-a33.o
-obj-$(CONFIG_SUN8I_A83T_CCU)	+= ccu-sun8i-a83t.o
-obj-$(CONFIG_SUN8I_H3_CCU)	+= ccu-sun8i-h3.o
-obj-$(CONFIG_SUN8I_V3S_CCU)	+= ccu-sun8i-v3s.o
-obj-$(CONFIG_SUN8I_DE2_CCU)	+= ccu-sun8i-de2.o
-obj-$(CONFIG_SUN8I_R_CCU)	+= ccu-sun8i-r.o
-obj-$(CONFIG_SUN8I_R40_CCU)	+= ccu-sun8i-r40.o
-obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80.o
-obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80-de.o
-obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80-usb.o
+obj-$(CONFIG_SUNIV_F1C100S_CCU)	+= suniv-f1c100s-ccu.o
+obj-$(CONFIG_SUN50I_A64_CCU)	+= sun50i-a64-ccu.o
+obj-$(CONFIG_SUN50I_A100_CCU)	+= sun50i-a100-ccu.o
+obj-$(CONFIG_SUN50I_A100_R_CCU)	+= sun50i-a100-r-ccu.o
+obj-$(CONFIG_SUN50I_H6_CCU)	+= sun50i-h6-ccu.o
+obj-$(CONFIG_SUN50I_H6_R_CCU)	+= sun50i-h6-r-ccu.o
+obj-$(CONFIG_SUN50I_H616_CCU)	+= sun50i-h616-ccu.o
+obj-$(CONFIG_SUN4I_A10_CCU)	+= sun4i-a10-ccu.o
+obj-$(CONFIG_SUN5I_CCU)		+= sun5i-ccu.o
+obj-$(CONFIG_SUN6I_A31_CCU)	+= sun6i-a31-ccu.o
+obj-$(CONFIG_SUN8I_A23_CCU)	+= sun8i-a23-ccu.o
+obj-$(CONFIG_SUN8I_A33_CCU)	+= sun8i-a33-ccu.o
+obj-$(CONFIG_SUN8I_A83T_CCU)	+= sun8i-a83t-ccu.o
+obj-$(CONFIG_SUN8I_H3_CCU)	+= sun8i-h3-ccu.o
+obj-$(CONFIG_SUN8I_R40_CCU)	+= sun8i-r40-ccu.o
+obj-$(CONFIG_SUN8I_V3S_CCU)	+= sun8i-v3s-ccu.o
+obj-$(CONFIG_SUN8I_DE2_CCU)	+= sun8i-de2-ccu.o
+obj-$(CONFIG_SUN8I_R_CCU)	+= sun8i-r-ccu.o
+obj-$(CONFIG_SUN9I_A80_CCU)	+= sun9i-a80-ccu.o
+obj-$(CONFIG_SUN9I_A80_CCU)	+= sun9i-a80-de-ccu.o
+obj-$(CONFIG_SUN9I_A80_CCU)	+= sun9i-a80-usb-ccu.o
+
+suniv-f1c100s-ccu-y		+= ccu-suniv-f1c100s.o
+sun50i-a64-ccu-y		+= ccu-sun50i-a64.o
+sun50i-a100-ccu-y		+= ccu-sun50i-a100.o
+sun50i-a100-r-ccu-y		+= ccu-sun50i-a100-r.o
+sun50i-h6-ccu-y			+= ccu-sun50i-h6.o
+sun50i-h6-r-ccu-y		+= ccu-sun50i-h6-r.o
+sun50i-h616-ccu-y		+= ccu-sun50i-h616.o
+sun4i-a10-ccu-y			+= ccu-sun4i-a10.o
+sun5i-ccu-y			+= ccu-sun5i.o
+sun6i-a31-ccu-y			+= ccu-sun6i-a31.o
+sun8i-a23-ccu-y			+= ccu-sun8i-a23.o
+sun8i-a33-ccu-y			+= ccu-sun8i-a33.o
+sun8i-a83t-ccu-y		+= ccu-sun8i-a83t.o
+sun8i-h3-ccu-y			+= ccu-sun8i-h3.o
+sun8i-r40-ccu-y			+= ccu-sun8i-r40.o
+sun8i-v3s-ccu-y			+= ccu-sun8i-v3s.o
+sun8i-de2-ccu-y			+= ccu-sun8i-de2.o
+sun8i-r-ccu-y			+= ccu-sun8i-r.o
+sun9i-a80-ccu-y			+= ccu-sun9i-a80.o
+sun9i-a80-de-ccu-y		+= ccu-sun9i-a80-de.o
+sun9i-a80-usb-ccu-y		+= ccu-sun9i-a80-usb.o

drivers/clk/sunxi-ng/ccu-sun50i-a100-r.c

@@ -5,7 +5,6 @@
 
 #include <linux/clk-provider.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
 #include <linux/platform_device.h>
 
 #include "ccu_common.h"
@@ -213,3 +212,6 @@ static struct platform_driver sun50i_a100_r_ccu_driver = {
 	},
 };
 module_platform_driver(sun50i_a100_r_ccu_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun50i-a100.c

@@ -6,7 +6,6 @@
 #include <linux/clk-provider.h>
 #include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
 #include <linux/platform_device.h>
 
 #include "ccu_common.h"
@@ -1275,3 +1274,6 @@ static struct platform_driver sun50i_a100_ccu_driver = {
 	},
 };
 module_platform_driver(sun50i_a100_ccu_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun50i-a64.c

@@ -5,7 +5,7 @@
 
 #include <linux/clk-provider.h>
 #include <linux/io.h>
-#include <linux/of_address.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 
 #include "ccu_common.h"
@@ -980,4 +980,7 @@ static struct platform_driver sun50i_a64_ccu_driver = {
 		.of_match_table	= sun50i_a64_ccu_ids,
 	},
 };
-builtin_platform_driver(sun50i_a64_ccu_driver);
+module_platform_driver(sun50i_a64_ccu_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun50i-h6.c

@@ -5,7 +5,7 @@
 
 #include <linux/clk-provider.h>
 #include <linux/io.h>
-#include <linux/of_address.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 
 #include "ccu_common.h"
@@ -1254,4 +1254,7 @@ static struct platform_driver sun50i_h6_ccu_driver = {
 		.of_match_table	= sun50i_h6_ccu_ids,
 	},
 };
-builtin_platform_driver(sun50i_h6_ccu_driver);
+module_platform_driver(sun50i_h6_ccu_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun8i-a83t.c

@@ -5,7 +5,7 @@
 
 #include <linux/clk-provider.h>
 #include <linux/io.h>
-#include <linux/of_address.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 
 #include "ccu_common.h"
@@ -920,4 +920,7 @@ static struct platform_driver sun8i_a83t_ccu_driver = {
 		.of_match_table	= sun8i_a83t_ccu_ids,
 	},
 };
-builtin_platform_driver(sun8i_a83t_ccu_driver);
+module_platform_driver(sun8i_a83t_ccu_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun8i-de2.c

@@ -5,8 +5,8 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/reset.h>
 
@@ -394,4 +394,7 @@ static struct platform_driver sunxi_de2_clk_driver = {
 		.of_match_table	= sunxi_de2_clk_ids,
 	},
 };
-builtin_platform_driver(sunxi_de2_clk_driver);
+module_platform_driver(sunxi_de2_clk_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun8i-r40.c

@@ -5,6 +5,7 @@
 
 #include <linux/clk-provider.h>
 #include <linux/io.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 
@@ -1371,4 +1372,7 @@ static struct platform_driver sun8i_r40_ccu_driver = {
 		.of_match_table	= sun8i_r40_ccu_ids,
 	},
 };
-builtin_platform_driver(sun8i_r40_ccu_driver);
+module_platform_driver(sun8i_r40_ccu_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c

@@ -5,7 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
-#include <linux/of_address.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/reset.h>
 
@@ -270,4 +270,7 @@ static struct platform_driver sun9i_a80_de_clk_driver = {
 		.of_match_table	= sun9i_a80_de_clk_ids,
 	},
 };
-builtin_platform_driver(sun9i_a80_de_clk_driver);
+module_platform_driver(sun9i_a80_de_clk_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c

@@ -5,7 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
-#include <linux/of_address.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 
 #include "ccu_common.h"
@@ -138,4 +138,7 @@ static struct platform_driver sun9i_a80_usb_clk_driver = {
 		.of_match_table	= sun9i_a80_usb_clk_ids,
 	},
 };
-builtin_platform_driver(sun9i_a80_usb_clk_driver);
+module_platform_driver(sun9i_a80_usb_clk_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");

drivers/clk/sunxi-ng/ccu-sun9i-a80.c

@@ -5,7 +5,7 @@
 
 #include <linux/clk-provider.h>
 #include <linux/io.h>
-#include <linux/of_address.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 
 #include "ccu_common.h"
@@ -1245,4 +1245,7 @@ static struct platform_driver sun9i_a80_ccu_driver = {
 		.of_match_table	= sun9i_a80_ccu_ids,
 	},
 };
-builtin_platform_driver(sun9i_a80_ccu_driver);
+module_platform_driver(sun9i_a80_ccu_driver);
+
+MODULE_IMPORT_NS(SUNXI_CCU);
+MODULE_LICENSE("GPL");