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(-)
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
