linux-kernel - [PATCH v2] gpio: vf610: allow disabling the vf610 driver

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Message-Id: <20240116095845.47458-1-martin@kaiser.cx>
Date: Tue, 16 Jan 2024 10:58:45 +0100
From: Martin Kaiser <martin@...ser.cx>
To: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>
Cc: Peng Fan <peng.fan@....com>,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Martin Kaiser <martin@...ser.cx>
Subject: [PATCH v2] gpio: vf610: allow disabling the vf610 driver

The vf610 gpio driver is enabled by default for all i.MX machines,
without any option to disable it in a board-specific config file.

Most i.MX chipsets have no hardware for this driver. Change the default
to enable GPIO_VF610 for SOC_VF610 and disable it otherwise.

Add a text description after the bool type, this makes the driver
selectable by make config etc. Enable the driver in arm64's default
config and in imx_v6_v7_defconfig to support chips like i.MX7ULP,
i.MX8QM, DXL, ULP and i.MX93.

Fixes: 30a35c07d9e9 ("gpio: vf610: drop the SOC_VF610 dependency for GPIO_VF610")
Signed-off-by: Martin Kaiser <martin@...ser.cx>
---
v2:
 - enable the vf610 gpio driver in the defconfig files for arm_v7
   (i.MX7ULP) and arm64 (i.MX8QM, DXL, ULP and i.MX93)

 arch/arm/configs/imx_v6_v7_defconfig | 1 +
 arch/arm64/configs/defconfig         | 1 +
 drivers/gpio/Kconfig                 | 3 ++-
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index 0a90583f9f01..3cdcb786f33f 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -208,6 +208,7 @@ CONFIG_PINCTRL_IMX8MQ=y
 CONFIG_GPIO_SYSFS=y
 CONFIG_GPIO_MXC=y
 CONFIG_GPIO_SIOX=m
+CONFIG_GPIO_VF610=y
 CONFIG_GPIO_MAX732X=y
 CONFIG_GPIO_PCA953X=y
 CONFIG_GPIO_PCF857X=y
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index e6cf3e5d63c3..915c7c8fd13f 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -632,6 +632,7 @@ CONFIG_GPIO_SYSCON=y
 CONFIG_GPIO_UNIPHIER=y
 CONFIG_GPIO_VISCONTI=y
 CONFIG_GPIO_WCD934X=m
+CONFIG_GPIO_VF610=y
 CONFIG_GPIO_XGENE=y
 CONFIG_GPIO_XGENE_SB=y
 CONFIG_GPIO_MAX732X=y
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 1301cec94f12..353af1a4d0ac 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -711,7 +711,8 @@ config GPIO_UNIPHIER
 	  Say yes here to support UniPhier GPIOs.
 
 config GPIO_VF610
-	def_bool y
+	bool "VF610 GPIO support"
+	default y if SOC_VF610
 	depends on ARCH_MXC
 	select GPIOLIB_IRQCHIP
 	help
-- 
2.39.2