linux-kernel - [PATCH v1 2/2] pinctrl: Kconfig/Makefile for building MediaTek pinctrl v2 driver as kernel module

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Date:   Thu, 13 Feb 2020 14:08:25 +0800
From:   <light.hsieh@...iatek.com>
To:     <linus.walleij@...aro.org>
CC:     <linux-mediatek@...ts.infradead.org>, <linux-gpio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <sean.wang@...nel.org>,
        <kuohong.wang@...iatek.com>, Light Hsieh <light.hsieh@...iatek.com>
Subject: [PATCH v1 2/2] pinctrl: Kconfig/Makefile for building MediaTek pinctrl v2 driver as kernel module

From: Light Hsieh <light.hsieh@...iatek.com>

1. drivers/pinctrl/mediatek/Kconfig:
1.1 PINCTRL_MT6765: change from bool to tristate. It is specified in
        defconfig file.
1.2 PINCTRL_MTK_PARIS: change from bool to tristate and select
        PINCTRL_MTK_V2. No need to specify in defconfig file.
      * PINCTRL_MTK_PARIS will be y if any PINCTRL_MTXXXX selecting
        PINCTRL_MTK_PARIS is y.
      * PINCTRL_MTK_PARIS will be n if all PINCTRL_MTXXXX selecting
        PINCTRL_MTK_PARIS are n.
      * PINCTRL_MTK_PARIS will be m if all PINCTRL_MTXXXX selecting
        PINCTRL_MTK_PARIS are m.
1.3 PINCTRL_MTK_MOORE: select EINT_MTK and PINCTRL_MTK_V2.
1.4 PINCTRL_MTK_V2: add this tristate config which depends on
        PINCTRL_MTK_PARIS and PINCTRL_MTK_MOORE. No need to specify in
        defconfig file.
      * PINCTRL_MTK_V2 will be y if either PINCTRL_MTK_PARIS or
        PINCTRL_MTK_MOORE is y.
      * PINCTRL_MTK_V2 will be n if both PINCTRL_MTK_PARIS and
        PINCTRL_MTK_MOORE are n.
      * PINCTRL_MTK_V2 will be m if both PINCTRL_MTK_PARIS is m and
        PINCTRL_MTK_MOORE is n.
1.5 EINT_MTK: change from bool to tristate and add rule for default.
        No need to specify in defconfig file.
      * First rule: determine if EINT_MTK is y or n according to
        selection of PINCTRL_MTK or PINCTRL_MTK_MORE.
      * Second rule: determine if EINT_MTK is y, m, or n according to
        selection of PINCTRL_MTK_PARIS.

2. drivers/pinctrl/mediatek/Makefile: Use PINCTRL_MTK_V2 to determine
        if pinctrl-mtk-common-v2.c is built as kernel module or
        built-in.

Signed-off-by: Light Hsieh <light.hsieh@...iatek.com>
---
 drivers/pinctrl/mediatek/Kconfig  | 17 +++++++++++++----
 drivers/pinctrl/mediatek/Makefile |  5 +++--
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/pinctrl/mediatek/Kconfig b/drivers/pinctrl/mediatek/Kconfig
index 701f9af..d48c313 100644
--- a/drivers/pinctrl/mediatek/Kconfig
+++ b/drivers/pinctrl/mediatek/Kconfig
@@ -3,10 +3,12 @@ menu "MediaTek pinctrl drivers"
 	depends on ARCH_MEDIATEK || COMPILE_TEST
 
 config EINT_MTK
-	bool "MediaTek External Interrupt Support"
+	tristate "MediaTek External Interrupt Support"
 	depends on PINCTRL_MTK || PINCTRL_MTK_MOORE || PINCTRL_MTK_PARIS || COMPILE_TEST
 	select GPIOLIB
 	select IRQ_DOMAIN
+	default y if PINCTRL_MTK || PINCTRL_MTK_MOORE
+	default PINCTRL_MTK_PARIS
 
 config PINCTRL_MTK
 	bool
@@ -17,23 +19,30 @@ config PINCTRL_MTK
 	select EINT_MTK
 	select OF_GPIO
 
+config PINCTRL_MTK_V2
+	tristate
+	depends on PINCTRL_MTK_MOORE || PINCTRL_MTK_PARIS
+
 config PINCTRL_MTK_MOORE
-	bool
+	tristate
 	depends on OF
 	select GENERIC_PINCONF
 	select GENERIC_PINCTRL_GROUPS
 	select GENERIC_PINMUX_FUNCTIONS
+	select EINT_MTK
 	select GPIOLIB
 	select OF_GPIO
+	select PINCTRL_MTK_V2
 
 config PINCTRL_MTK_PARIS
-	bool
+	tristate
 	depends on OF
 	select PINMUX
 	select GENERIC_PINCONF
 	select GPIOLIB
 	select EINT_MTK
 	select OF_GPIO
+	select PINCTRL_MTK_V2
 
 # For ARMv7 SoCs
 config PINCTRL_MT2701
@@ -80,7 +89,7 @@ config PINCTRL_MT2712
 	select PINCTRL_MTK
 
 config PINCTRL_MT6765
-	bool "Mediatek MT6765 pin control"
+	tristate "Mediatek MT6765 pin control"
 	depends on OF
 	depends on ARM64 || COMPILE_TEST
 	default ARM64 && ARCH_MEDIATEK
diff --git a/drivers/pinctrl/mediatek/Makefile b/drivers/pinctrl/mediatek/Makefile
index a74325a..4b71328 100644
--- a/drivers/pinctrl/mediatek/Makefile
+++ b/drivers/pinctrl/mediatek/Makefile
@@ -2,8 +2,9 @@
 # Core
 obj-$(CONFIG_EINT_MTK)		+= mtk-eint.o
 obj-$(CONFIG_PINCTRL_MTK)	+= pinctrl-mtk-common.o
-obj-$(CONFIG_PINCTRL_MTK_MOORE) += pinctrl-moore.o pinctrl-mtk-common-v2.o
-obj-$(CONFIG_PINCTRL_MTK_PARIS) += pinctrl-paris.o pinctrl-mtk-common-v2.o
+obj-$(CONFIG_PINCTRL_MTK_V2)	+= pinctrl-mtk-common-v2.o
+obj-$(CONFIG_PINCTRL_MTK_MOORE) += pinctrl-moore.o
+obj-$(CONFIG_PINCTRL_MTK_PARIS) += pinctrl-paris.o
 
 # SoC Drivers
 obj-$(CONFIG_PINCTRL_MT2701)	+= pinctrl-mt2701.o
-- 
1.8.1.1.dirty