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soc: samsung: exynos-chipid: convert to a module 

Exynos ChipID and ASV (Adaptive Supply Voltage) driver is not essential
to system boot and it can successfully be built and loaded as module.

This makes core kernel image smaller and reduces the memory footprint
when multi-platform kernel is booted on non-Exynos board.  Usually it is
also distro-friendly.

Add multiple authors of the driver since its conversion from
mach-exynos, ordered alphabetically by first name.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Sylwester Nawrocki <snawrocki@kernel.org>
Tested-by: Sylwester Nawrocki <snawrocki@kernel.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20210919093114.35987-3-krzysztof.kozlowski@canonical.com
This commit is contained in:
Krzysztof Kozlowski 2021-09-19 11:31:13 +02:00
parent d1141886c8
commit 1e3e559f8d
4 changed files with 15 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/soc/samsung/Kconfig
View File

@ -13,13 +13,14 @@ config EXYNOS_ASV_ARM
depends on EXYNOS_CHIPID
config EXYNOS_CHIPID
bool "Exynos ChipID controller and ASV driver" if COMPILE_TEST
tristate "Exynos ChipID controller and ASV driver" if COMPILE_TEST
depends on ARCH_EXYNOS || COMPILE_TEST
select EXYNOS_ASV_ARM if ARM && ARCH_EXYNOS
select MFD_SYSCON
select SOC_BUS
help
Support for Samsung Exynos SoC ChipID and Adaptive Supply Voltage.
This driver can also be built as module (exynos_chipid).
config EXYNOS_PMU
bool "Exynos PMU controller driver" if COMPILE_TEST

3
drivers/soc/samsung/Makefile
View File

@ -1,8 +1,9 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_EXYNOS_ASV_ARM) += exynos5422-asv.o
obj-$(CONFIG_EXYNOS_CHIPID) += exynos_chipid.o
exynos_chipid-y += exynos-chipid.o exynos-asv.o
obj-$(CONFIG_EXYNOS_CHIPID) += exynos-chipid.o exynos-asv.o
obj-$(CONFIG_EXYNOS_PMU) += exynos-pmu.o
obj-$(CONFIG_EXYNOS_PMU_ARM_DRIVERS) += exynos3250-pmu.o exynos4-pmu.o \

11
drivers/soc/samsung/exynos-chipid.c
View File

@ -15,6 +15,7 @@
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
@ -128,6 +129,7 @@ static const struct of_device_id exynos_chipid_of_device_ids[] = {
{ .compatible = "samsung,exynos4210-chipid" },
{}
};
MODULE_DEVICE_TABLE(of, exynos_chipid_of_device_ids);
static struct platform_driver exynos_chipid_driver = {
.driver = {
@ -137,4 +139,11 @@ static struct platform_driver exynos_chipid_driver = {
.probe = exynos_chipid_probe,
.remove = exynos_chipid_remove,
};
builtin_platform_driver(exynos_chipid_driver);
module_platform_driver(exynos_chipid_driver);
MODULE_DESCRIPTION("Samsung Exynos ChipID controller and ASV driver");
MODULE_AUTHOR("Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>");
MODULE_AUTHOR("Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>");
MODULE_AUTHOR("Pankaj Dubey <pankaj.dubey@samsung.com>");
MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
MODULE_LICENSE("GPL");

1
drivers/soc/samsung/exynos5422-asv.c
View File

@ -503,3 +503,4 @@ int exynos5422_asv_init(struct exynos_asv *asv)
return 0;
}
EXPORT_SYMBOL_GPL(exynos5422_asv_init);