From 91389c390521a02ecfb91270f5b9d7fae4312ae5 Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Thu, 18 Nov 2021 21:33:37 -0600 Subject: [PATCH] clk: sunxi-ng: Allow the CCU core to be built as a module Like the individual CCU drivers, it can be beneficial for memory consumption of cross-platform configurations to only load the CCU core on the relevant platform. For example, a generic arm64 kernel sees the following improvement when building the CCU core and drivers as modules: before: text data bss dec hex filename 13882360 5251670 360800 19494830 12977ae vmlinux after: text data bss dec hex filename 13734787 5086442 360800 19182029 124b1cd vmlinux So the result is a 390KB total reduction in kernel image size. The one early clock provider (sun5i) requires the core to be built in. Now that loading the MMC driver will trigger loading the CCU core, the MMC timing mode functions do not need a compile-time fallback. Signed-off-by: Samuel Holland Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20211119033338.25486-5-samuel@sholland.org --- drivers/clk/Makefile | 2 +- drivers/clk/sunxi-ng/Kconfig | 3 ++- drivers/clk/sunxi-ng/Makefile | 33 +++++++++++++++++-------------- drivers/clk/sunxi-ng/ccu_common.c | 3 +++ drivers/mmc/host/Kconfig | 1 + include/linux/clk/sunxi-ng.h | 15 -------------- 6 files changed, 25 insertions(+), 32 deletions(-) diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index e42312121e51..6afe36bd2c0a 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -110,7 +110,7 @@ obj-$(CONFIG_PLAT_SPEAR) += spear/ obj-y += sprd/ obj-$(CONFIG_ARCH_STI) += st/ obj-$(CONFIG_ARCH_SUNXI) += sunxi/ -obj-$(CONFIG_SUNXI_CCU) += sunxi-ng/ +obj-y += sunxi-ng/ obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-y += ti/ obj-$(CONFIG_CLK_UNIPHIER) += uniphier/ diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig index de88b6e0ec69..727ff755eca4 100644 --- a/drivers/clk/sunxi-ng/Kconfig +++ b/drivers/clk/sunxi-ng/Kconfig @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only config SUNXI_CCU - bool "Clock support for Allwinner SoCs" + tristate "Clock support for Allwinner SoCs" depends on ARCH_SUNXI || COMPILE_TEST select RESET_CONTROLLER default ARCH_SUNXI @@ -52,6 +52,7 @@ config SUN5I_CCU bool "Support for the Allwinner sun5i family CCM" default MACH_SUN5I depends on MACH_SUN5I || COMPILE_TEST + depends on SUNXI_CCU=y config SUN6I_A31_CCU tristate "Support for the Allwinner A31/A31s CCU" diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile index 1020ed49a588..659d55150c32 100644 --- a/drivers/clk/sunxi-ng/Makefile +++ b/drivers/clk/sunxi-ng/Makefile @@ -1,24 +1,27 @@ # SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_SUNXI_CCU) += sunxi-ccu.o + # Common objects -obj-y += ccu_common.o -obj-y += ccu_mmc_timing.o -obj-y += ccu_reset.o +sunxi-ccu-y += ccu_common.o +sunxi-ccu-y += ccu_mmc_timing.o +sunxi-ccu-y += ccu_reset.o # Base clock types -obj-y += ccu_div.o -obj-y += ccu_frac.o -obj-y += ccu_gate.o -obj-y += ccu_mux.o -obj-y += ccu_mult.o -obj-y += ccu_phase.o -obj-y += ccu_sdm.o +sunxi-ccu-y += ccu_div.o +sunxi-ccu-y += ccu_frac.o +sunxi-ccu-y += ccu_gate.o +sunxi-ccu-y += ccu_mux.o +sunxi-ccu-y += ccu_mult.o +sunxi-ccu-y += ccu_phase.o +sunxi-ccu-y += ccu_sdm.o # Multi-factor clocks -obj-y += ccu_nk.o -obj-y += ccu_nkm.o -obj-y += ccu_nkmp.o -obj-y += ccu_nm.o -obj-y += ccu_mp.o +sunxi-ccu-y += ccu_nk.o +sunxi-ccu-y += ccu_nkm.o +sunxi-ccu-y += ccu_nkmp.o +sunxi-ccu-y += ccu_nm.o +sunxi-ccu-y += ccu_mp.o # SoC support obj-$(CONFIG_SUNIV_F1C100S_CCU) += suniv-f1c100s-ccu.o diff --git a/drivers/clk/sunxi-ng/ccu_common.c b/drivers/clk/sunxi-ng/ccu_common.c index 6afdedbce6a2..8d28a7a079d0 100644 --- a/drivers/clk/sunxi-ng/ccu_common.c +++ b/drivers/clk/sunxi-ng/ccu_common.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include "ccu_common.h" @@ -214,3 +215,5 @@ void of_sunxi_ccu_probe(struct device_node *node, void __iomem *reg, kfree(ccu); } } + +MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 5af8494c31b5..52b0b27a6839 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -966,6 +966,7 @@ config MMC_REALTEK_USB config MMC_SUNXI tristate "Allwinner sunxi SD/MMC Host Controller support" depends on ARCH_SUNXI || COMPILE_TEST + depends on SUNXI_CCU help This selects support for the SD/MMC Host Controller on Allwinner sunxi SoCs. diff --git a/include/linux/clk/sunxi-ng.h b/include/linux/clk/sunxi-ng.h index 3cd14acde0a1..cf32123b39f5 100644 --- a/include/linux/clk/sunxi-ng.h +++ b/include/linux/clk/sunxi-ng.h @@ -6,22 +6,7 @@ #ifndef _LINUX_CLK_SUNXI_NG_H_ #define _LINUX_CLK_SUNXI_NG_H_ -#include - -#ifdef CONFIG_SUNXI_CCU int sunxi_ccu_set_mmc_timing_mode(struct clk *clk, bool new_mode); int sunxi_ccu_get_mmc_timing_mode(struct clk *clk); -#else -static inline int sunxi_ccu_set_mmc_timing_mode(struct clk *clk, - bool new_mode) -{ - return -ENOTSUPP; -} - -static inline int sunxi_ccu_get_mmc_timing_mode(struct clk *clk) -{ - return -ENOTSUPP; -} -#endif #endif