diff mbox

[v2] pinctrl: sh-pfc: Rework PFC GPIO support

Message ID 20160217081549.17344.77173.sendpatchset@little-apple (mailing list archive)
State Accepted
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Magnus Damm Feb. 17, 2016, 8:15 a.m. UTC
From: Magnus Damm <damm+renesas@opensource.se>

The sh-pfc pinctrl driver is currently handling SoC-specific
PFC hardware blocks on ARM64, ARM and SH architectures.

For older SoCs using SH cores and some 32-bit ARM SoCs the PFC
hardware also provides GPIO functionality. On the majority of
32-bit ARM SoCs from Renesas and so far all ARM64 SoCs the GPIO
feature is provided by separate hardware blocks.

So far GPIO support in the PFC driver has been compiled-in for
the majority of the SoCs, but with this patch applied the SoCs
with PFC support may select from one of the following:
 - CONFIG_PINCTRL_SH_PFC - Used if PFC lacks GPIO hardware
 - CONFIG_PINCTRL_SH_PFC_GPIO - Used if PFC includes GPIO support

This patch results in the following changes:
 - The GPIO functionality is only compiled-in on relevant SoCs
 - The number of lines of code is reduced

Build tested using the following configurations:
 - r8a7795 -> CONFIG_PINCTRL_SH_PFC_GPIO=n -> OK (ARM64)
 - r8a7790 -> CONFIG_PINCTRL_SH_PFC_GPIO=n -> OK (ARM)
 - r8a7790 + r8a7740 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (ARM)
 - r8a7740 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (ARM)
 - sh7751 -> CONFIG_PINCTRL_SH_PFC=n -> OK (SH rts7751r2d1)
 - sh7724 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (SH ecovec24)

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
---

 Changes since V1:
 - Simplied Makefile bits to remove sh-pfc-objs and use new Kconfig symbol

 drivers/pinctrl/sh-pfc/Kconfig  |   54 ++++++++++++++-------------------------
 drivers/pinctrl/sh-pfc/Makefile |    7 +----
 drivers/pinctrl/sh-pfc/core.c   |    4 +-
 3 files changed, 24 insertions(+), 41 deletions(-)

Comments

Geert Uytterhoeven Feb. 17, 2016, 8:36 a.m. UTC | #1
Hi Magnus,

On Wed, Feb 17, 2016 at 9:15 AM, Magnus Damm <magnus.damm@gmail.com> wrote:
> From: Magnus Damm <damm+renesas@opensource.se>
>
> The sh-pfc pinctrl driver is currently handling SoC-specific
> PFC hardware blocks on ARM64, ARM and SH architectures.
>
> For older SoCs using SH cores and some 32-bit ARM SoCs the PFC
> hardware also provides GPIO functionality. On the majority of
> 32-bit ARM SoCs from Renesas and so far all ARM64 SoCs the GPIO
> feature is provided by separate hardware blocks.
>
> So far GPIO support in the PFC driver has been compiled-in for
> the majority of the SoCs, but with this patch applied the SoCs
> with PFC support may select from one of the following:
>  - CONFIG_PINCTRL_SH_PFC - Used if PFC lacks GPIO hardware
>  - CONFIG_PINCTRL_SH_PFC_GPIO - Used if PFC includes GPIO support
>
> This patch results in the following changes:
>  - The GPIO functionality is only compiled-in on relevant SoCs
>  - The number of lines of code is reduced
>
> Build tested using the following configurations:
>  - r8a7795 -> CONFIG_PINCTRL_SH_PFC_GPIO=n -> OK (ARM64)
>  - r8a7790 -> CONFIG_PINCTRL_SH_PFC_GPIO=n -> OK (ARM)
>  - r8a7790 + r8a7740 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (ARM)
>  - r8a7740 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (ARM)
>  - sh7751 -> CONFIG_PINCTRL_SH_PFC=n -> OK (SH rts7751r2d1)
>  - sh7724 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (SH ecovec24)
>
> Signed-off-by: Magnus Damm <damm+renesas@opensource.se>

Thanks, looks fine to me!

I can queue this up in sh-pfc-for-v4.6 if other people like it, too.

> ---
>
>  Changes since V1:
>  - Simplied Makefile bits to remove sh-pfc-objs and use new Kconfig symbol
>
>  drivers/pinctrl/sh-pfc/Kconfig  |   54 ++++++++++++++-------------------------
>  drivers/pinctrl/sh-pfc/Makefile |    7 +----
>  drivers/pinctrl/sh-pfc/core.c   |    4 +-
>  3 files changed, 24 insertions(+), 41 deletions(-)
>
> --- 0001/drivers/pinctrl/sh-pfc/Kconfig
> +++ work/drivers/pinctrl/sh-pfc/Kconfig 2016-02-17 16:23:21.630513000 +0900
> @@ -5,7 +5,6 @@
>  if ARCH_SHMOBILE || SUPERH
>
>  config PINCTRL_SH_PFC
> -       select GPIO_SH_PFC if ARCH_REQUIRE_GPIOLIB
>         select PINMUX
>         select PINCONF
>         select GENERIC_PINCONF
> @@ -13,12 +12,12 @@ config PINCTRL_SH_PFC
>         help
>           This enables pin control drivers for SH and SH Mobile platforms
>
> -config GPIO_SH_PFC
> -       bool "SuperH PFC GPIO support"
> -       depends on PINCTRL_SH_PFC && GPIOLIB
> +config PINCTRL_SH_PFC_GPIO
> +       select GPIOLIB
> +       select PINCTRL_SH_PFC
> +       def_bool n

"n" is the default, so this can be just "bool".
I can easily fix that myself when applying, though...

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
Laurent Pinchart Feb. 17, 2016, 2:04 p.m. UTC | #2
Hi Magnus,

Thank you for the patch.

On Wednesday 17 February 2016 17:15:49 Magnus Damm wrote:
> From: Magnus Damm <damm+renesas@opensource.se>
> 
> The sh-pfc pinctrl driver is currently handling SoC-specific
> PFC hardware blocks on ARM64, ARM and SH architectures.
> 
> For older SoCs using SH cores and some 32-bit ARM SoCs the PFC
> hardware also provides GPIO functionality. On the majority of
> 32-bit ARM SoCs from Renesas and so far all ARM64 SoCs the GPIO
> feature is provided by separate hardware blocks.
> 
> So far GPIO support in the PFC driver has been compiled-in for
> the majority of the SoCs, but with this patch applied the SoCs
> with PFC support may select from one of the following:
>  - CONFIG_PINCTRL_SH_PFC - Used if PFC lacks GPIO hardware
>  - CONFIG_PINCTRL_SH_PFC_GPIO - Used if PFC includes GPIO support
> 
> This patch results in the following changes:
>  - The GPIO functionality is only compiled-in on relevant SoCs
>  - The number of lines of code is reduced
> 
> Build tested using the following configurations:
>  - r8a7795 -> CONFIG_PINCTRL_SH_PFC_GPIO=n -> OK (ARM64)
>  - r8a7790 -> CONFIG_PINCTRL_SH_PFC_GPIO=n -> OK (ARM)
>  - r8a7790 + r8a7740 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (ARM)
>  - r8a7740 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (ARM)
>  - sh7751 -> CONFIG_PINCTRL_SH_PFC=n -> OK (SH rts7751r2d1)
>  - sh7724 -> CONFIG_PINCTRL_SH_PFC_GPIO=y -> OK (SH ecovec24)
> 
> Signed-off-by: Magnus Damm <damm+renesas@opensource.se>

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
> 
>  Changes since V1:
>  - Simplied Makefile bits to remove sh-pfc-objs and use new Kconfig symbol
> 
>  drivers/pinctrl/sh-pfc/Kconfig  |   54
> ++++++++++++++------------------------- drivers/pinctrl/sh-pfc/Makefile |  
>  7 +----
>  drivers/pinctrl/sh-pfc/core.c   |    4 +-
>  3 files changed, 24 insertions(+), 41 deletions(-)
> 
> --- 0001/drivers/pinctrl/sh-pfc/Kconfig
> +++ work/drivers/pinctrl/sh-pfc/Kconfig	2016-02-17 16:23:21.630513000 +0900
> @@ -5,7 +5,6 @@
>  if ARCH_SHMOBILE || SUPERH
> 
>  config PINCTRL_SH_PFC
> -	select GPIO_SH_PFC if ARCH_REQUIRE_GPIOLIB
>  	select PINMUX
>  	select PINCONF
>  	select GENERIC_PINCONF
> @@ -13,12 +12,12 @@ config PINCTRL_SH_PFC
>  	help
>  	  This enables pin control drivers for SH and SH Mobile platforms
> 
> -config GPIO_SH_PFC
> -	bool "SuperH PFC GPIO support"
> -	depends on PINCTRL_SH_PFC && GPIOLIB
> +config PINCTRL_SH_PFC_GPIO
> +	select GPIOLIB
> +	select PINCTRL_SH_PFC
> +	def_bool n
>  	help
> -	  This enables support for GPIOs within the SoC's pin function
> -	  controller.
> +	  This enables pin control and GPIO drivers for SH/SH Mobile platforms
> 
>  config PINCTRL_PFC_EMEV2
>  	def_bool y
> @@ -28,12 +27,12 @@ config PINCTRL_PFC_EMEV2
>  config PINCTRL_PFC_R8A73A4
>  	def_bool y
>  	depends on ARCH_R8A73A4
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_R8A7740
>  	def_bool y
>  	depends on ARCH_R8A7740
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_R8A7778
>  	def_bool y
> @@ -73,79 +72,66 @@ config PINCTRL_PFC_R8A7795
>  config PINCTRL_PFC_SH7203
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7203
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7264
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7264
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7269
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7269
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH73A0
>  	def_bool y
>  	depends on ARCH_SH73A0
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
>  	select REGULATOR
> 
>  config PINCTRL_PFC_SH7720
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7720
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7722
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7722
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7723
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7723
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7724
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7724
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7734
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7734
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7757
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7757
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7785
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7785
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SH7786
>  	def_bool y
>  	depends on CPU_SUBTYPE_SH7786
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> +	select PINCTRL_SH_PFC_GPIO
> 
>  config PINCTRL_PFC_SHX3
>  	def_bool y
>  	depends on CPU_SUBTYPE_SHX3
> -	depends on GPIOLIB
> -	select PINCTRL_SH_PFC
> -
> +	select PINCTRL_SH_PFC_GPIO
>  endif
> --- 0001/drivers/pinctrl/sh-pfc/Makefile
> +++ work/drivers/pinctrl/sh-pfc/Makefile	2016-02-17 16:26:18.660513000 
+0900
> @@ -1,8 +1,5 @@
> -sh-pfc-objs			= core.o pinctrl.o
> -ifeq ($(CONFIG_GPIO_SH_PFC),y)
> -sh-pfc-objs			+= gpio.o
> -endif
> -obj-$(CONFIG_PINCTRL_SH_PFC)	+= sh-pfc.o
> +obj-$(CONFIG_PINCTRL_SH_PFC)	+= core.o pinctrl.o
> +obj-$(CONFIG_PINCTRL_SH_PFC_GPIO)	+= gpio.o
>  obj-$(CONFIG_PINCTRL_PFC_EMEV2)	+= pfc-emev2.o
>  obj-$(CONFIG_PINCTRL_PFC_R8A73A4)	+= pfc-r8a73a4.o
>  obj-$(CONFIG_PINCTRL_PFC_R8A7740)	+= pfc-r8a7740.o
> --- 0001/drivers/pinctrl/sh-pfc/core.c
> +++ work/drivers/pinctrl/sh-pfc/core.c	2016-02-17 16:23:21.640513000 +0900
> @@ -558,7 +558,7 @@ static int sh_pfc_probe(struct platform_
>  	if (unlikely(ret != 0))
>  		return ret;
> 
> -#ifdef CONFIG_GPIO_SH_PFC
> +#ifdef CONFIG_PINCTRL_SH_PFC_GPIO
>  	/*
>  	 * Then the GPIO chip
>  	 */
> @@ -584,7 +584,7 @@ static int sh_pfc_remove(struct platform
>  {
>  	struct sh_pfc *pfc = platform_get_drvdata(pdev);
> 
> -#ifdef CONFIG_GPIO_SH_PFC
> +#ifdef CONFIG_PINCTRL_SH_PFC_GPIO
>  	sh_pfc_unregister_gpiochip(pfc);
>  #endif
>  	sh_pfc_unregister_pinctrl(pfc);
diff mbox

Patch

--- 0001/drivers/pinctrl/sh-pfc/Kconfig
+++ work/drivers/pinctrl/sh-pfc/Kconfig	2016-02-17 16:23:21.630513000 +0900
@@ -5,7 +5,6 @@ 
 if ARCH_SHMOBILE || SUPERH
 
 config PINCTRL_SH_PFC
-	select GPIO_SH_PFC if ARCH_REQUIRE_GPIOLIB
 	select PINMUX
 	select PINCONF
 	select GENERIC_PINCONF
@@ -13,12 +12,12 @@  config PINCTRL_SH_PFC
 	help
 	  This enables pin control drivers for SH and SH Mobile platforms
 
-config GPIO_SH_PFC
-	bool "SuperH PFC GPIO support"
-	depends on PINCTRL_SH_PFC && GPIOLIB
+config PINCTRL_SH_PFC_GPIO
+	select GPIOLIB
+	select PINCTRL_SH_PFC
+	def_bool n
 	help
-	  This enables support for GPIOs within the SoC's pin function
-	  controller.
+	  This enables pin control and GPIO drivers for SH/SH Mobile platforms
 
 config PINCTRL_PFC_EMEV2
 	def_bool y
@@ -28,12 +27,12 @@  config PINCTRL_PFC_EMEV2
 config PINCTRL_PFC_R8A73A4
 	def_bool y
 	depends on ARCH_R8A73A4
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_R8A7740
 	def_bool y
 	depends on ARCH_R8A7740
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_R8A7778
 	def_bool y
@@ -73,79 +72,66 @@  config PINCTRL_PFC_R8A7795
 config PINCTRL_PFC_SH7203
 	def_bool y
 	depends on CPU_SUBTYPE_SH7203
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7264
 	def_bool y
 	depends on CPU_SUBTYPE_SH7264
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7269
 	def_bool y
 	depends on CPU_SUBTYPE_SH7269
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH73A0
 	def_bool y
 	depends on ARCH_SH73A0
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 	select REGULATOR
 
 config PINCTRL_PFC_SH7720
 	def_bool y
 	depends on CPU_SUBTYPE_SH7720
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7722
 	def_bool y
 	depends on CPU_SUBTYPE_SH7722
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7723
 	def_bool y
 	depends on CPU_SUBTYPE_SH7723
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7724
 	def_bool y
 	depends on CPU_SUBTYPE_SH7724
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7734
 	def_bool y
 	depends on CPU_SUBTYPE_SH7734
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7757
 	def_bool y
 	depends on CPU_SUBTYPE_SH7757
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7785
 	def_bool y
 	depends on CPU_SUBTYPE_SH7785
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SH7786
 	def_bool y
 	depends on CPU_SUBTYPE_SH7786
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
+	select PINCTRL_SH_PFC_GPIO
 
 config PINCTRL_PFC_SHX3
 	def_bool y
 	depends on CPU_SUBTYPE_SHX3
-	depends on GPIOLIB
-	select PINCTRL_SH_PFC
-
+	select PINCTRL_SH_PFC_GPIO
 endif
--- 0001/drivers/pinctrl/sh-pfc/Makefile
+++ work/drivers/pinctrl/sh-pfc/Makefile	2016-02-17 16:26:18.660513000 +0900
@@ -1,8 +1,5 @@ 
-sh-pfc-objs			= core.o pinctrl.o
-ifeq ($(CONFIG_GPIO_SH_PFC),y)
-sh-pfc-objs			+= gpio.o
-endif
-obj-$(CONFIG_PINCTRL_SH_PFC)	+= sh-pfc.o
+obj-$(CONFIG_PINCTRL_SH_PFC)	+= core.o pinctrl.o
+obj-$(CONFIG_PINCTRL_SH_PFC_GPIO)	+= gpio.o
 obj-$(CONFIG_PINCTRL_PFC_EMEV2)	+= pfc-emev2.o
 obj-$(CONFIG_PINCTRL_PFC_R8A73A4)	+= pfc-r8a73a4.o
 obj-$(CONFIG_PINCTRL_PFC_R8A7740)	+= pfc-r8a7740.o
--- 0001/drivers/pinctrl/sh-pfc/core.c
+++ work/drivers/pinctrl/sh-pfc/core.c	2016-02-17 16:23:21.640513000 +0900
@@ -558,7 +558,7 @@  static int sh_pfc_probe(struct platform_
 	if (unlikely(ret != 0))
 		return ret;
 
-#ifdef CONFIG_GPIO_SH_PFC
+#ifdef CONFIG_PINCTRL_SH_PFC_GPIO
 	/*
 	 * Then the GPIO chip
 	 */
@@ -584,7 +584,7 @@  static int sh_pfc_remove(struct platform
 {
 	struct sh_pfc *pfc = platform_get_drvdata(pdev);
 
-#ifdef CONFIG_GPIO_SH_PFC
+#ifdef CONFIG_PINCTRL_SH_PFC_GPIO
 	sh_pfc_unregister_gpiochip(pfc);
 #endif
 	sh_pfc_unregister_pinctrl(pfc);