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[v3,2/5] drivers: soc: Add support for Exynos PMU driver

Message ID 1416461968-2057-3-git-send-email-amit.daniel@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Amit Kachhap Nov. 20, 2014, 5:39 a.m. UTC 
This patch moves Exynos PMU driver implementation from "arm/mach-exynos"
to "drivers/soc/samsung". This driver is mainly used for setting misc
bits of register from PMU IP of Exynos SoC which will be required to
configure before Suspend/Resume. Currently all these settings are done
in "arch/arm/mach-exynos/pmu.c" but moving ahead for ARM64 based SoC
support, there is a need of this PMU driver in driver/* folder.

This driver uses existing DT binding information and there should
be no functionality change in the supported platforms.

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
---
 arch/arm/mach-exynos/Makefile                      |    2 +-
 drivers/soc/Kconfig                                |    1 +
 drivers/soc/Makefile                               |    1 +
 drivers/soc/samsung/Kconfig                        |   20 ++++++++++++++++++++
 drivers/soc/samsung/Makefile                       |    1 +
 .../pmu.c => drivers/soc/samsung/exynos-pmu.c      |    0
 6 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 drivers/soc/samsung/Kconfig
 create mode 100644 drivers/soc/samsung/Makefile
 rename arch/arm/mach-exynos/pmu.c => drivers/soc/samsung/exynos-pmu.c (100%)

diff --git a/arch/arm/mach-exynos/pmu.c b/drivers/soc/samsung/exynos-pmu.c
similarity index 100%
rename from arch/arm/mach-exynos/pmu.c
rename to drivers/soc/samsung/exynos-pmu.c

Comments

Russell King - ARM Linux Nov. 20, 2014, 10:03 a.m. UTC | #1 
On Thu, Nov 20, 2014 at 11:09:25AM +0530, Amit Daniel Kachhap wrote:
> diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
> index 063113d..44d220d 100644
> --- a/drivers/soc/Makefile
> +++ b/drivers/soc/Makefile
> @@ -6,3 +6,4 @@ obj-$(CONFIG_ARCH_QCOM)		+= qcom/
>  obj-$(CONFIG_ARCH_TEGRA)	+= tegra/
>  obj-$(CONFIG_SOC_TI)		+= ti/
>  obj-$(CONFIG_PLAT_VERSATILE)	+= versatile/
> +obj-$(CONFIG_ARCH_EXYNOS)	+= samsung/

Is ARCH_EXYNOS appropriate here, or is your new SOC_SAMSUNG better?

> diff --git a/drivers/soc/samsung/Kconfig b/drivers/soc/samsung/Kconfig
> new file mode 100644
> index 0000000..a424ebc
> --- /dev/null
> +++ b/drivers/soc/samsung/Kconfig
> @@ -0,0 +1,20 @@
> +#
> +# SAMSUNG SOC drivers
> +#
> +menuconfig SOC_SAMSUNG
> +	bool "Samsung SOC drivers support"

If you intend to select SOC_SAMSUNG, is there any point in making this
a user-visible symbol?
Amit Kachhap Nov. 21, 2014, 6:26 a.m. UTC | #2 
On Thu, Nov 20, 2014 at 3:33 PM, Russell King - ARM Linux
<linux@arm.linux.org.uk> wrote:
> On Thu, Nov 20, 2014 at 11:09:25AM +0530, Amit Daniel Kachhap wrote:
>> diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
>> index 063113d..44d220d 100644
>> --- a/drivers/soc/Makefile
>> +++ b/drivers/soc/Makefile
>> @@ -6,3 +6,4 @@ obj-$(CONFIG_ARCH_QCOM)               += qcom/
>>  obj-$(CONFIG_ARCH_TEGRA)     += tegra/
>>  obj-$(CONFIG_SOC_TI)         += ti/
>>  obj-$(CONFIG_PLAT_VERSATILE) += versatile/
>> +obj-$(CONFIG_ARCH_EXYNOS)    += samsung/
>
> Is ARCH_EXYNOS appropriate here, or is your new SOC_SAMSUNG better?
yes, SOC_SAMSUNG is more appropriate.
>
>> diff --git a/drivers/soc/samsung/Kconfig b/drivers/soc/samsung/Kconfig
>> new file mode 100644
>> index 0000000..a424ebc
>> --- /dev/null
>> +++ b/drivers/soc/samsung/Kconfig
>> @@ -0,0 +1,20 @@
>> +#
>> +# SAMSUNG SOC drivers
>> +#
>> +menuconfig SOC_SAMSUNG
>> +     bool "Samsung SOC drivers support"
>
> If you intend to select SOC_SAMSUNG, is there any point in making this
> a user-visible symbol?
Agreed, only menu "Samsung SOC drivers support" will be fine.

Regards,
Amit
>
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diff mbox

Patch

diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index bcefb54..b91b382 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -9,7 +9,7 @@  ccflags-$(CONFIG_ARCH_MULTIPLATFORM) += -I$(srctree)/$(src)/include -I$(srctree)
 
 # Core
 
-obj-$(CONFIG_ARCH_EXYNOS)	+= exynos.o pmu.o exynos-smc.o firmware.o
+obj-$(CONFIG_ARCH_EXYNOS)	+= exynos.o exynos-smc.o firmware.o
 
 obj-$(CONFIG_EXYNOS_CPU_SUSPEND) += pm.o sleep.o
 obj-$(CONFIG_PM_SLEEP)		+= suspend.o
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index 76d6bd4..90f33b9 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -3,5 +3,6 @@  menu "SOC (System On Chip) specific Drivers"
 source "drivers/soc/qcom/Kconfig"
 source "drivers/soc/ti/Kconfig"
 source "drivers/soc/versatile/Kconfig"
+source "drivers/soc/samsung/Kconfig"
 
 endmenu
diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
index 063113d..44d220d 100644
--- a/drivers/soc/Makefile
+++ b/drivers/soc/Makefile
@@ -6,3 +6,4 @@  obj-$(CONFIG_ARCH_QCOM)		+= qcom/
 obj-$(CONFIG_ARCH_TEGRA)	+= tegra/
 obj-$(CONFIG_SOC_TI)		+= ti/
 obj-$(CONFIG_PLAT_VERSATILE)	+= versatile/
+obj-$(CONFIG_ARCH_EXYNOS)	+= samsung/
diff --git a/drivers/soc/samsung/Kconfig b/drivers/soc/samsung/Kconfig
new file mode 100644
index 0000000..a424ebc
--- /dev/null
+++ b/drivers/soc/samsung/Kconfig
@@ -0,0 +1,20 @@ 
+#
+# SAMSUNG SOC drivers
+#
+menuconfig SOC_SAMSUNG
+	bool "Samsung SOC drivers support"
+
+if SOC_SAMSUNG
+
+config EXYNOS_PMU
+	bool "Support Exynos Power Management Unit"
+	depends on ARCH_EXYNOS
+	default y
+	help
+	  Exynos SoC have Power Management Unit (PMU) which controls power and
+	  operation state of various components in Exynos SoC. This driver
+	  provides implementation of PMU driver and provides various
+	  functionality like initialisation and transition to various low power
+	  states.
+
+endif #SOC_SAMSUNG
diff --git a/drivers/soc/samsung/Makefile b/drivers/soc/samsung/Makefile
new file mode 100644
index 0000000..5a879c6
--- /dev/null
+++ b/drivers/soc/samsung/Makefile
@@ -0,0 +1 @@ 
+obj-$(CONFIG_EXYNOS_PMU)	+= exynos-pmu.o