diff mbox series

[v2,10/12] soc: samsung: pmu: modularize the Exynos ARMv8 PMU driver

Message ID 20210928235635.1348330-11-willmcvicker@google.com
State New
Headers show
Series arm64: Kconfig: Update ARCH_EXYNOS select configs | expand

Commit Message

William McVicker Sept. 28, 2021, 11:56 p.m. UTC
In order to only modularize the Exynos ARMv8 PMU driver, we have to
split it up from the ARM PMU driver. So make the following Kconfig
changes:
  * EXYNOS_PMU -> EXYNOS_PMU_ARM64
  * EXYNOS_PMU_ARM_DRIVERS -> EXYNOS_PMU_ARM

This patch also includes the necessary modularization changes.

Lastly, have EXYNOS_PMU_ARM64 use "default y if ARCH_EXYNOS && ARM64"
instead of having ARCH_EXYNOS select it directly.

Signed-off-by: Will McVicker <willmcvicker@google.com>
---
 arch/arm/mach-exynos/Kconfig           |  2 +-
 arch/arm64/Kconfig.platforms           |  1 -
 drivers/soc/samsung/Kconfig            | 15 +++++++++------
 drivers/soc/samsung/Makefile           |  8 +++++---
 drivers/soc/samsung/exynos-pmu.c       | 13 +++++++------
 drivers/soc/samsung/exynos-pmu.h       |  2 +-
 include/linux/soc/samsung/exynos-pmu.h |  2 +-
 7 files changed, 24 insertions(+), 19 deletions(-)

Comments

Krzysztof Kozlowski Sept. 29, 2021, 1:11 p.m. UTC | #1
On 29/09/2021 01:56, Will McVicker wrote:
> In order to only modularize the Exynos ARMv8 PMU driver, we have to
> split it up from the ARM PMU driver. So make the following Kconfig
> changes:
>   * EXYNOS_PMU -> EXYNOS_PMU_ARM64
>   * EXYNOS_PMU_ARM_DRIVERS -> EXYNOS_PMU_ARM
> 
> This patch also includes the necessary modularization changes.
> 
> Lastly, have EXYNOS_PMU_ARM64 use "default y if ARCH_EXYNOS && ARM64"
> instead of having ARCH_EXYNOS select it directly.

The same comments as for clocks patch:
1. You missed to explain the most important change - removed enforcing
of built-in.
2. You ignored Geert's comments and broke distros configs for Exynos
platforms.



Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index afc8cd062605..e97e1d8f7b00 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -13,7 +13,7 @@  menuconfig ARCH_EXYNOS
 	select ARM_GIC
 	select EXYNOS_IRQ_COMBINER
 	select EXYNOS_THERMAL
-	select EXYNOS_PMU
+	select EXYNOS_PMU_ARM
 	select EXYNOS_SROM
 	select EXYNOS_PM_DOMAINS if PM_GENERIC_DOMAINS
 	select GPIOLIB
diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 67f60cc3c723..e5e4b9b2fb97 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -92,7 +92,6 @@  config ARCH_BRCMSTB
 config ARCH_EXYNOS
 	bool "ARMv8 based Samsung Exynos SoC family"
 	select EXYNOS_PM_DOMAINS if PM_GENERIC_DOMAINS
-	select EXYNOS_PMU
 	select HAVE_S3C_RTC if RTC_CLASS
 	select PINCTRL
 	select PM_GENERIC_DOMAINS if PM
diff --git a/drivers/soc/samsung/Kconfig b/drivers/soc/samsung/Kconfig
index d3746415be72..fdf1162ec98b 100644
--- a/drivers/soc/samsung/Kconfig
+++ b/drivers/soc/samsung/Kconfig
@@ -23,15 +23,18 @@  config EXYNOS_CHIPID
 	  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
-	depends on ARCH_EXYNOS || ((ARM || ARM64) && COMPILE_TEST)
-	select EXYNOS_PMU_ARM_DRIVERS if ARM && ARCH_EXYNOS
+config EXYNOS_PMU_ARM64
+	tristate "Exynos PMU controller driver"
+	depends on ARCH_EXYNOS || (ARM64 && COMPILE_TEST)
+	default y if (ARCH_EXYNOS && ARM64)
+	help
+	  Support for Samsung Exynos ARMv8 PMU controller. This driver can be
+	  built-in or as a module (exynos-pmu).
 
 # There is no need to enable these drivers for ARMv8
-config EXYNOS_PMU_ARM_DRIVERS
+config EXYNOS_PMU_ARM
 	bool "Exynos PMU ARMv7-specific driver extensions" if COMPILE_TEST
-	depends on EXYNOS_PMU
+	depends on ARCH_EXYNOS || (ARM && COMPILE_TEST)
 
 config EXYNOS_PM_DOMAINS
 	bool "Exynos PM domains" if COMPILE_TEST
diff --git a/drivers/soc/samsung/Makefile b/drivers/soc/samsung/Makefile
index 2ae4bea804cf..cd55c72a052d 100644
--- a/drivers/soc/samsung/Makefile
+++ b/drivers/soc/samsung/Makefile
@@ -4,10 +4,12 @@  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-$(CONFIG_EXYNOS_PMU)	+= exynos-pmu.o
+obj-$(CONFIG_EXYNOS_PMU_ARM64)	+= exynos-pmu.o
+
+obj-$(CONFIG_EXYNOS_PMU_ARM)	+= exynos-pmu32.o
+exynos-pmu32-y			+= exynos-pmu.o exynos3250-pmu.o \
+			exynos4-pmu.o exynos5250-pmu.o exynos5420-pmu.o
 
-obj-$(CONFIG_EXYNOS_PMU_ARM_DRIVERS)	+= exynos3250-pmu.o exynos4-pmu.o \
-					exynos5250-pmu.o exynos5420-pmu.o
 obj-$(CONFIG_EXYNOS_PM_DOMAINS) += pm_domains.o
 obj-$(CONFIG_EXYNOS_REGULATOR_COUPLER) += exynos-regulator-coupler.o
 
diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c
index a18c93a4646c..3dd0219c908c 100644
--- a/drivers/soc/samsung/exynos-pmu.c
+++ b/drivers/soc/samsung/exynos-pmu.c
@@ -8,6 +8,7 @@ 
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
+#include <linux/module.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/syscon.h>
 #include <linux/platform_device.h>
@@ -63,7 +64,7 @@  void exynos_sys_powerdown_conf(enum sys_powerdown mode)
  * Split the data between ARM architectures because it is relatively big
  * and useless on other arch.
  */
-#ifdef CONFIG_EXYNOS_PMU_ARM_DRIVERS
+#ifdef CONFIG_EXYNOS_PMU_ARM
 #define exynos_pmu_data_arm_ptr(data)	(&data)
 #else
 #define exynos_pmu_data_arm_ptr(data)	NULL
@@ -154,9 +155,9 @@  static struct platform_driver exynos_pmu_driver = {
 	.probe = exynos_pmu_probe,
 };
 
-static int __init exynos_pmu_init(void)
-{
-	return platform_driver_register(&exynos_pmu_driver);
+module_platform_driver(exynos_pmu_driver);
 
-}
-postcore_initcall(exynos_pmu_init);
+MODULE_DESCRIPTION("Exynos PMU controller driver");
+MODULE_AUTHOR("Marek Szyprowski <m.szyprowski@samsung.com>");
+MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/soc/samsung/exynos-pmu.h b/drivers/soc/samsung/exynos-pmu.h
index 5e851f32307e..4a7f03c79dd0 100644
--- a/drivers/soc/samsung/exynos-pmu.h
+++ b/drivers/soc/samsung/exynos-pmu.h
@@ -28,7 +28,7 @@  struct exynos_pmu_data {
 
 extern void __iomem *pmu_base_addr;
 
-#ifdef CONFIG_EXYNOS_PMU_ARM_DRIVERS
+#ifdef CONFIG_EXYNOS_PMU_ARM
 /* list of all exported SoC specific data */
 extern const struct exynos_pmu_data exynos3250_pmu_data;
 extern const struct exynos_pmu_data exynos4210_pmu_data;
diff --git a/include/linux/soc/samsung/exynos-pmu.h b/include/linux/soc/samsung/exynos-pmu.h
index a4f5516cc956..d7317e0902b8 100644
--- a/include/linux/soc/samsung/exynos-pmu.h
+++ b/include/linux/soc/samsung/exynos-pmu.h
@@ -19,7 +19,7 @@  enum sys_powerdown {
 };
 
 extern void exynos_sys_powerdown_conf(enum sys_powerdown mode);
-#ifdef CONFIG_EXYNOS_PMU
+#if IS_ENABLED(CONFIG_EXYNOS_PMU_ARM64) || IS_ENABLED(CONFIG_EXYNOS_PMU_ARM)
 extern struct regmap *exynos_get_pmu_regmap(void);
 #else
 static inline struct regmap *exynos_get_pmu_regmap(void)