[PATCH v5 00/14] ARM: samsung-time: Prepare for multiplatform support

Tomasz Figa
2013-04-12T19:17:16Z

This series is an attempt to make the samsung-time clocksource driver ready
for multiplatform kernels. It moves the driver to drivers/clocksource, cleans
it up from uses of static platform-specific definitions, simplifies timer
interrupt handling and adds Device Tree support.

The samsung_pwm clocksource driver is made the master driver, which
exposes a single function to the PWM driver to get required data. Only
samsung-time driver is reworked to use the master driver at this time,
since the PWM driver can be already considered broken at the moment and
needs separate series of several patches to fix and clean it up, which
I am already working on.

Tested on Universal C210 board with Device Tree. Not tested without
Device Tree, since it has been already broken before this series.
Compile tested for other related SoCs.

Changes since v4:
(http://thread.gmane.org/gmane.linux.kernel.samsung-soc/17464)
- Changed the design again - now clocksource driver is considered the master
and exports a single function to get access to things like base address,
hardware variant information, shared spinlock for register access
synchronization and interrupt numbers
- Renamed the clocksource driver to samsung_pwm
- Cleaned up the code a bit more
- Added clocksource_of_init support

Changes since v3:
(http://thread.gmane.org/gmane.linux.kernel.samsung-soc/16664/)
- Changed the design to use common (master) driver for operations that
can be done from both clocksource and PWM drivers (as suggested by
Arnd Bergmann) - needed to properly synchronize access to PWM registers
- Moved handling of PWM prescaler and divider to master driver

Changes since v2:
(http://thread.gmane.org/gmane.linux.kernel.samsung-soc/16158)
- Addressed comments from Rob Herring and Mark Rutland
- Removed unused register definitions
- Replaced samsung,source-timer and samsung,event-timer properties
with samsung,pwm-outputs property that defines which PWM channels
are reserved for PWM outputs on particular platform
- Split non-DT and DT initialization into two functions
- Fixed a copy paste error

Changes since v1:
(http://thread.gmane.org/gmane.linux.kernel.samsung-soc/16005)
- Addressed comments from Mark Rutland
- Documented struct samsung_timer_variant
- Dropped inactive mail addresses from CC

Tomasz Figa (14):
ARM: SAMSUNG: Move samsung-time to drivers/clocksource
clocksource: samsung-pwm: Clean up platform header
clocksource: samsung-pwm: Add infrastructure to share PWM hardware
ARM: SAMSUNG: Unify base address definitions of timer block
ARM: SAMSUNG: Add new PWM platform device
ARM: SAMSUNG: Set PWM platform data
clocksource: samsung-pwm: Use platform data to setup the clocksource
clocksource: samsung-pwm: Synchronize register accesses
clocksource: samsung-pwm: Move IRQ mask/ack handling to the driver
ARM: SAMSUNG: Remove unused PWM timer IRQ chip code
clocksource: samsung-pwm: Configure dividers directly
clocksource: samsung-pwm: Do not use static mapping of registers
clocksource: samsung-pwm: Drop unnecessary includes
clocksource: samsung-pwm: Prepare for clocksource_of_init

.../devicetree/bindings/pwm/pwm-samsung.txt | 43 ++
arch/arm/Kconfig | 1 -
arch/arm/mach-exynos/common.c | 10 +
arch/arm/mach-exynos/include/mach/irqs.h | 3 +-
arch/arm/mach-exynos/include/mach/map.h | 1 +
arch/arm/mach-s3c24xx/common.c | 10 +
arch/arm/mach-s3c24xx/include/mach/irqs.h | 6 +
arch/arm/mach-s3c24xx/include/mach/map.h | 2 +
arch/arm/mach-s3c64xx/common.c | 14 +-
arch/arm/mach-s3c64xx/include/mach/irqs.h | 8 -
arch/arm/mach-s3c64xx/include/mach/map.h | 1 +
arch/arm/mach-s5p64x0/common.c | 10 +
arch/arm/mach-s5p64x0/include/mach/irqs.h | 2 -
arch/arm/mach-s5p64x0/include/mach/map.h | 1 +
arch/arm/mach-s5pc100/common.c | 10 +
arch/arm/mach-s5pc100/include/mach/irqs.h | 2 -
arch/arm/mach-s5pc100/include/mach/map.h | 1 +
arch/arm/mach-s5pv210/common.c | 10 +
arch/arm/mach-s5pv210/include/mach/irqs.h | 2 -
arch/arm/mach-s5pv210/include/mach/map.h | 1 +
arch/arm/plat-samsung/Kconfig | 14 -
arch/arm/plat-samsung/Makefile | 2 -
arch/arm/plat-samsung/devs.c | 33 +-
arch/arm/plat-samsung/include/plat/devs.h | 1 +
arch/arm/plat-samsung/include/plat/irq-vic-timer.h | 13 -
arch/arm/plat-samsung/include/plat/irqs.h | 9 -
arch/arm/plat-samsung/include/plat/samsung-time.h | 38 +-
arch/arm/plat-samsung/irq-vic-timer.c | 98 ----
arch/arm/plat-samsung/s5p-irq.c | 3 -
arch/arm/plat-samsung/samsung-time.c | 394 -------------
drivers/clocksource/Kconfig | 7 +
drivers/clocksource/Makefile | 1 +
drivers/clocksource/samsung_pwm.c | 636 +++++++++++++++++++++
include/clocksource/samsung_pwm.h | 45 ++
34 files changed, 849 insertions(+), 583 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pwm/pwm-samsung.txt
delete mode 100644 arch/arm/plat-samsung/include/plat/irq-vic-timer.h
delete mode 100644 arch/arm/plat-samsung/irq-vic-timer.c
delete mode 100644 arch/arm/plat-samsung/samsung-time.c
create mode 100644 drivers/clocksource/samsung_pwm.c
create mode 100644 include/clocksource/samsung_pwm.h

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1.8.1.5