pwm: Remove obsolete HAVE_PWM Kconfig symbol

Before we had the PWM framework we used to have a barebone PWM api. The
HAVE_PWM Kconfig symbol used to be selected by the PWM drivers to specify
the PWM API is present in the kernel. Since the last legacy driver is gone
the HAVE_PWM symbol can go aswell.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---

I suggest that Thierry as PWM Maintainer takes the patch through his tree.
Is that ok for you Thierry?

 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(-)

On Thu, Jan 16, 2014 at 7:01 AM, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> Before we had the PWM framework we used to have a barebone PWM api. The
> HAVE_PWM Kconfig symbol used to be selected by the PWM drivers to specify
> the PWM API is present in the kernel. Since the last legacy driver is gone
> the HAVE_PWM symbol can go aswell.
>
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Looks good to me, happy to see it gone.

> ---
>
> I suggest that Thierry as PWM Maintainer takes the patch through his tree.
> Is that ok for you Thierry?
>
>  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(-)
>
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index c1f1a7e..1b6f499 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -109,9 +109,6 @@ config ARM_DMA_IOMMU_ALIGNMENT
>
>  endif
>
> -config HAVE_PWM
> -       bool
> -
>  config MIGHT_HAVE_PCI
>         bool
>
> @@ -606,7 +603,6 @@ config ARCH_LPC32XX
>         select CPU_ARM926T
>         select GENERIC_CLOCKEVENTS
>         select HAVE_IDE
> -       select HAVE_PWM
>         select USB_ARCH_HAS_OHCI
>         select USE_OF
>         help
> diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
> index 96100db..b96244c 100644
> --- a/arch/arm/mach-pxa/Kconfig
> +++ b/arch/arm/mach-pxa/Kconfig
> @@ -7,7 +7,6 @@ comment "Intel/Marvell Dev Platforms (sorted by hardware release time)"
>  config MACH_PXA3XX_DT
>         bool "Support PXA3xx platforms from device tree"
>         select CPU_PXA300
> -       select HAVE_PWM
>         select POWER_SUPPLY
>         select PXA3xx
>         select USE_OF
> @@ -23,12 +22,10 @@ config ARCH_LUBBOCK
>
>  config MACH_MAINSTONE
>         bool "Intel HCDDBBVA0 Development Platform (aka Mainstone)"
> -       select HAVE_PWM
>         select PXA27x
>
>  config MACH_ZYLONITE
>         bool
> -       select HAVE_PWM
>         select PXA3xx
>
>  config MACH_ZYLONITE300
> @@ -69,7 +66,6 @@ config ARCH_PXA_IDP
>  config ARCH_VIPER
>         bool "Arcom/Eurotech VIPER SBC"
>         select ARCOM_PCMCIA
> -       select HAVE_PWM
>         select I2C_GPIO
>         select ISA
>         select PXA25x
> @@ -120,7 +116,6 @@ config MACH_CM_X300
>         bool "CompuLab CM-X300 modules"
>         select CPU_PXA300
>         select CPU_PXA310
> -       select HAVE_PWM
>         select PXA3xx
>
>  config MACH_CAPC7117
> @@ -211,7 +206,6 @@ config TRIZEPS_PCMCIA
>
>  config MACH_LOGICPD_PXA270
>         bool "LogicPD PXA270 Card Engine Development Platform"
> -       select HAVE_PWM
>         select PXA27x
>
>  config MACH_PCM027
> @@ -222,7 +216,6 @@ config MACH_PCM027
>  config MACH_PCM990_BASEBOARD
>         bool "PHYTEC PCM-990 development board"
>         depends on MACH_PCM027
> -       select HAVE_PWM
>
>  choice
>         prompt "display on pcm990"
> @@ -246,7 +239,6 @@ config MACH_COLIBRI
>  config MACH_COLIBRI_PXA270_INCOME
>         bool "Income s.r.o. PXA270 SBC"
>         depends on MACH_COLIBRI
> -       select HAVE_PWM
>         select PXA27x
>
>  config MACH_COLIBRI300
> @@ -275,7 +267,6 @@ comment "End-user Products (sorted by vendor name)"
>
>  config MACH_H4700
>         bool "HP iPAQ hx4700"
> -       select HAVE_PWM
>         select IWMMXT
>         select PXA27x
>
> @@ -289,14 +280,12 @@ config MACH_HIMALAYA
>
>  config MACH_MAGICIAN
>         bool "Enable HTC Magician Support"
> -       select HAVE_PWM
>         select IWMMXT
>         select PXA27x
>
>  config MACH_MIOA701
>         bool "Mitac Mio A701 Support"
>         select GPIO_SYSFS
> -       select HAVE_PWM
>         select IWMMXT
>         select PXA27x
>         help
> @@ -306,7 +295,6 @@ config MACH_MIOA701
>
>  config PXA_EZX
>         bool "Motorola EZX Platform"
> -       select HAVE_PWM
>         select IWMMXT
>         select PXA27x
>
> @@ -346,7 +334,6 @@ config MACH_MP900C
>
>  config ARCH_PXA_PALM
>         bool "PXA based Palm PDAs"
> -       select HAVE_PWM
>
>  config MACH_PALM27X
>         bool
> @@ -444,7 +431,6 @@ config MACH_TREO680
>  config MACH_RAUMFELD_RC
>         bool "Raumfeld Controller"
>         select CPU_PXA300
> -       select HAVE_PWM
>         select POWER_SUPPLY
>         select PXA3xx
>
> @@ -608,7 +594,6 @@ config MACH_E800
>
>  config MACH_ZIPIT2
>         bool "Zipit Z2 Handheld"
> -       select HAVE_PWM
>         select PXA27x
>  endmenu
>
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index 650de39..ce62af8 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -233,7 +233,6 @@ config MACH_JZ4740
>         select IRQ_CPU
>         select ARCH_REQUIRE_GPIOLIB
>         select SYS_HAS_EARLY_PRINTK
> -       select HAVE_PWM
>         select HAVE_CLK
>         select GENERIC_IRQ_CHIP
>
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index 5f4967d..bc6ec8e 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -156,7 +156,7 @@ config INPUT_MAX8925_ONKEY
>
>  config INPUT_MAX8997_HAPTIC
>         tristate "MAXIM MAX8997 haptic controller support"
> -       depends on PWM && HAVE_PWM && MFD_MAX8997
> +       depends on PWM && MFD_MAX8997
>         select INPUT_FF_MEMLESS
>         help
>           This option enables device driver support for the haptic controller
> @@ -461,7 +461,7 @@ config INPUT_PCF8574
>
>  config INPUT_PWM_BEEPER
>         tristate "PWM beeper support"
> -       depends on PWM && HAVE_PWM
> +       depends on PWM
>         help
>           Say Y here to get support for PWM based beeper devices.
>
> diff --git a/include/linux/pwm.h b/include/linux/pwm.h
> index f0feafd..4717f54 100644
> --- a/include/linux/pwm.h
> +++ b/include/linux/pwm.h
> @@ -7,7 +7,7 @@
>  struct pwm_device;
>  struct seq_file;
>
> -#if IS_ENABLED(CONFIG_PWM) || IS_ENABLED(CONFIG_HAVE_PWM)
> +#if IS_ENABLED(CONFIG_PWM)
>  /*
>   * pwm_request - request a PWM device
>   */
> --
> 1.8.5.2
>
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On Thu, Jan 16, 2014 at 04:01:34PM +0100, Sascha Hauer wrote:
> Before we had the PWM framework we used to have a barebone PWM api. The
> HAVE_PWM Kconfig symbol used to be selected by the PWM drivers to specify
> the PWM API is present in the kernel. Since the last legacy driver is gone
> the HAVE_PWM symbol can go aswell.
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
> 
> I suggest that Thierry as PWM Maintainer takes the patch through his tree.
> Is that ok for you Thierry?

Yes, that'd be my preference as well. Perhaps you can resend and add a
few more people on Cc. In particular I'd like at least Russell's (ARM)
and Ralf's (MIPS) Acked-by. Dmitry was already Cc'ed for input/misc.

The patch is rather minimal, but I'd still like to give them an
opportunity to object or at least see the patch.

Thanks,
Thierry