Re: [PATCH 0/7] Remove HAVE_PWM config option

From: Jingoo Han
Date: Mon Feb 10 2014 - 22:02:36 EST


On Monday, February 10, 2014 10:07 AM, Jingoo Han wrote:
>
> The HAVE_PWM symbol is only for legacy platforms that provide
> the PWM API without using the generic framework, while PWM symbol
> is used for PWM drivers using the generic PWM framework.
>
> I looked at all HAVE_PWMs in the latest mainline kernel 3.14-rc1.
> Three platforms are still using HAVE_PWM as below:
>
> 1. ARM - PXA
> ./arch/arm/mach-pxa/Kconfig
>
> 2. ARM - NXP LPC32XX
> ./arch/arm/Kconfig
> config ARCH_LPC32XX
> select HAVE_PWM
>
> 3. MIPS - Ingenic JZ4740 based machines
> ./arch/mips/Kconfig
> config MACH_JZ4740
> select HAVE_PWM
>
> However, the legacy PWM drivers for PXA, LPC32XX, and JZ474 were
> already moved to the generic PWM framework.
> ./drivers/pwm/pwm-pxa.c
> ./drivers/pwm/pwm-lpc32xx.c
> ./drivers/pwm/pwm-jz4740.c
>
> In conclusion, HAVE_PWM should be removed, because HAVE_PWM is
> NOT required anymore.
>
> Jingoo Han (7):
> ARM: pxa: don't select HAVE_PWM
> ARM: lpc32xx: don't select HAVE_PWM
> ARM: remove HAVE_PWM config option
> MIPS: jz4740: don't select HAVE_PWM
> Input: max8997_haptic: remove HAVE_PWM dependencies
> Input: pwm-beepe: remove HAVE_PWM dependencies
> pwm: don't use IS_ENABLED(CONFIG_HAVE_PWM)
>
> arch/arm/Kconfig | 4 ----
> arch/arm/mach-pxa/Kconfig | 15 ---------------
> arch/mips/Kconfig | 1 -
> drivers/input/misc/Kconfig | 4 ++--
> include/linux/pwm.h | 2 +-
> 5 files changed, 3 insertions(+), 23 deletions(-)

(+cc Sascha Hauer, Roland Stigge)

The same patch was already submitted by Sascha Hauer. [1]
So, please ignore this patch. Thank you.

[1] https://lkml.org/lkml/2014/1/16/262

Best regards,
Jingoo Han

>
> I would like to merge these patches as below:
>
> 1. Through arm-soc tree
> [PATCH 1/7] ARM: pxa: don't select HAVE_PWM
> [PATCH 2/7] ARM: lpc32xx: don't select HAVE_PWM
> [PATCH 3/7] ARM: remove HAVE_PWM config option
>
> 2. Through MIPS tree
> [PATCH 4/7] MIPS: jz4740: don't select HAVE_PWM
>
> 3. Through Input tree
> [PATCH 5/7] Input: max8997_haptic: remove HAVE_PWM dependencies
> [PATCH 6/7] Input: pwm-beepe: remove HAVE_PWM dependencies
>
> 4. Through PWM tree
> [PATCH 7/7] pwm: don't use IS_ENABLED(CONFIG_HAVE_PWM)
>
> After merging these patches, all HAVE_PWM will be removed from
> the mainline kernel. Thank you. :-)
>
> Best regards,
> Jingoo Han

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