[PATCH v2 00/18] Final Samsung PWM support cleanup

[Tomasz Figa]

Hi All,

On Friday 21 of June 2013 00:12:45 Tomasz Figa wrote:
> Since we now have a proper Samsung PWM clocksource driver in place,
> we can proceed with further cleanup of PWM timers support on Samsung
> SoCs.
> 
> This series attempts to achieve this goal by:
>  1) moving remaining Samsung platforms to the new clocksource driver
>  2) removing old clocksource driver
>  3) adding new multiplatform- and DT-aware PWM driver
>  4) moving all Samsung platforms to use the new PWM driver
>  5) removing old PWM driver
>  6) removing all PWM-related code that is not used anymore
> 
> Cleaning up the PWM driver is a bit tricky, because the design of
> current driver makes it completely unsuitable for DT and multiplatform
> and would require a heavy rework to make it usable, breaking any
> existing Samsung PWM users by the way. To avoid any breakage I decided
> to keep the old driver, add new one, move all platforms to it and then
> remove the old one.
> 
> See particular patches for more detailed descriptions.
> 
> On S3C6410-based Tiny6410 (Mini6410-compatible), after enabling
> pwm-beeper and Exynos4210-based Origen board (with PWM0 attached to a
> scope):
> 
> Tested-by: Tomasz Figa <tomasz.figa at gmail.com>

Just tested on SMDK6410 with PWM backlight and works fine.

Best regards,
Tomasz

> Changes since v1:
>  - made sure that suspend/resume is handled correctly in both
>    clocksource and PWM drivers,
>  - fixed incorrect definition of AUTORELOAD bit for channel 4,
>  - fixed order of registering PWM device and calling samsung_bl_set(),
>    which assumes that PWM device has been already registered,
>  - corrected commit messages of several patches,
>  - addressed all the valid comments from reviewers, including cleanup
>    of most code originally copied from previous PWM driver,
>  - rebased on top of current Kgene's for-next,
>  - tested on Exynos4210, verifying correct PWM output with a scope.
> 
> Needs testing on other platforms as I could only compile test for them.
> Tomasz Figa (18):
>   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_timer: Cache clocksource register address
>   clocksource: samsung_pwm_timer: Do not use clocksource_mmio
>   clocksource: samsung_pwm_timer: Handle suspend/resume correctly
>   ARM: SAMSUNG: Move all platforms to new clocksource driver
>   ARM: SAMSUNG: Remove old samsung-time driver
>   ARM: SAMSUNG: Remove unused PWM timer IRQ chip code
>   pwm: samsung: Rename to pwm-samsung-legacy
>   pwm: Add new pwm-samsung driver
>   ARM: SAMSUNG: Rework private data handling in dev-backlight
>   ARM: SAMSUNG: Modify board files to use new PWM platform device
>   pwm: Remove superseded pwm-samsung-legacy driver
>   ARM: SAMSUNG: Remove old PWM timer platform devices
>   ARM: SAMSUNG: Remove pwm-clock infrastructure
>   ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header
>   ARM: SAMSUNG: Remove plat/regs-timer.h header
> 
>  arch/arm/Kconfig                                   |   1 -
>  arch/arm/mach-s3c24xx/Kconfig                      |  12 +-
>  arch/arm/mach-s3c24xx/clock-s3c2410.c              |   1 -
>  arch/arm/mach-s3c24xx/clock-s3c2412.c              |   1 -
>  arch/arm/mach-s3c24xx/clock-s3c2416.c              |   2 -
>  arch/arm/mach-s3c24xx/clock-s3c2443.c              |   2 -
>  arch/arm/mach-s3c24xx/common.c                     |  27 +
>  arch/arm/mach-s3c24xx/include/mach/map.h           |   2 +
>  arch/arm/mach-s3c24xx/mach-h1940.c                 |   4 +-
>  arch/arm/mach-s3c24xx/mach-rx1950.c                |   5 +-
>  arch/arm/mach-s3c64xx/Kconfig                      |   4 +-
>  arch/arm/mach-s3c64xx/clock.c                      |   2 -
>  arch/arm/mach-s3c64xx/common.c                     |  32 +-
>  arch/arm/mach-s3c64xx/include/mach/irqs.h          |   8 -
>  arch/arm/mach-s3c64xx/include/mach/map.h           |   1 +
>  arch/arm/mach-s3c64xx/irq-pm.c                     |   2 -
>  arch/arm/mach-s3c64xx/mach-crag6410.c              |   4 +-
>  arch/arm/mach-s3c64xx/mach-hmt.c                   |   4 +-
>  arch/arm/mach-s3c64xx/mach-smartq.c                |   4 +-
>  arch/arm/mach-s3c64xx/mach-smdk6410.c              |   5 +-
>  arch/arm/mach-s5p64x0/Kconfig                      |   4 +-
>  arch/arm/mach-s5p64x0/clock-s5p6440.c              |   2 -
>  arch/arm/mach-s5p64x0/clock-s5p6450.c              |   2 -
>  arch/arm/mach-s5p64x0/common.c                     |  27 +
>  arch/arm/mach-s5p64x0/include/mach/irqs.h          |   2 -
>  arch/arm/mach-s5p64x0/include/mach/map.h           |   1 +
>  arch/arm/mach-s5p64x0/mach-smdk6440.c              |   5 +-
>  arch/arm/mach-s5p64x0/mach-smdk6450.c              |   5 +-
>  arch/arm/mach-s5p64x0/pm.c                         |   3 -
>  arch/arm/mach-s5pc100/Kconfig                      |   2 +-
>  arch/arm/mach-s5pc100/clock.c                      |   2 -
>  arch/arm/mach-s5pc100/common.c                     |  28 +
>  arch/arm/mach-s5pc100/include/mach/irqs.h          |   2 -
>  arch/arm/mach-s5pc100/include/mach/map.h           |   1 +
>  arch/arm/mach-s5pc100/mach-smdkc100.c              |   5 +-
>  arch/arm/mach-s5pv210/Kconfig                      |   2 +-
>  arch/arm/mach-s5pv210/clock.c                      |   1 -
>  arch/arm/mach-s5pv210/common.c                     |  28 +
>  arch/arm/mach-s5pv210/include/mach/irqs.h          |   2 -
>  arch/arm/mach-s5pv210/include/mach/map.h           |   1 +
>  arch/arm/mach-s5pv210/mach-smdkv210.c              |   5 +-
>  arch/arm/mach-s5pv210/pm.c                         |  10 -
>  arch/arm/plat-samsung/Kconfig                      |  14 -
>  arch/arm/plat-samsung/Makefile                     |   3 -
>  arch/arm/plat-samsung/dev-backlight.c              |  61 +-
>  arch/arm/plat-samsung/devs.c                       |  42 +-
>  arch/arm/plat-samsung/include/plat/clock.h         |   4 -
>  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/pwm-clock.h     |  81 ---
>  arch/arm/plat-samsung/include/plat/pwm-core.h      |  24 +
>  arch/arm/plat-samsung/include/plat/regs-timer.h    | 124 ----
>  arch/arm/plat-samsung/include/plat/samsung-time.h  |  23 -
>  arch/arm/plat-samsung/irq-vic-timer.c              |  98 ---
>  arch/arm/plat-samsung/pwm-clock.c                  | 474 --------------
> arch/arm/plat-samsung/s5p-irq.c                    |   4 -
>  arch/arm/plat-samsung/samsung-time.c               | 394 ------------
>  drivers/clocksource/samsung_pwm_timer.c            |  84 +--
>  drivers/pwm/pwm-samsung.c                          | 694
> ++++++++++++++------- 60 files changed, 766 insertions(+), 1644
> deletions(-)
>  delete mode 100644 arch/arm/plat-samsung/include/plat/irq-vic-timer.h
>  delete mode 100644 arch/arm/plat-samsung/include/plat/pwm-clock.h
>  create mode 100644 arch/arm/plat-samsung/include/plat/pwm-core.h
>  delete mode 100644 arch/arm/plat-samsung/include/plat/regs-timer.h
>  delete mode 100644 arch/arm/plat-samsung/irq-vic-timer.c
>  delete mode 100644 arch/arm/plat-samsung/pwm-clock.c
>  delete mode 100644 arch/arm/plat-samsung/samsung-time.c