[PATCH] gpio: relax the Kconfig dependency on OF_GPIO in drivers

[Bartosz Golaszewski <brgl@xxxxxxxx>]

From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>

None of the symbols exported in gpiolib-of.h are used by any of the GPIO
drivers we maintain. Even if they were, there are stubs for !OF_GPIO.
There's no reason for any of the drivers to depend at build-time on
GPIO_OF. We can drop all such cases.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
---
 drivers/gpio/Kconfig | 34 ++++------------------------------
 1 file changed, 4 insertions(+), 30 deletions(-)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index e28efd5f9c17..652413e9c14c 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -134,7 +134,6 @@ menu "Memory mapped GPIO drivers"
 
 config GPIO_74XX_MMIO
 	tristate "GPIO driver for 74xx-ICs with MMIO access"
-	depends on OF_GPIO
 	select GPIO_GENERIC
 	help
 	  Say yes here to support GPIO functionality for 74xx-compatible ICs
@@ -148,7 +147,6 @@ config GPIO_74XX_MMIO
 
 config GPIO_ALTERA
 	tristate "Altera GPIO"
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	select OF_GPIO_MM_GPIOCHIP
 	help
@@ -192,7 +190,6 @@ config GPIO_ATH79
 config GPIO_RASPBERRYPI_EXP
 	tristate "Raspberry Pi 3 GPIO Expander"
 	default RASPBERRYPI_FIRMWARE
-	depends on OF_GPIO
 	# Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
 	# happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
 	depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
@@ -208,7 +205,7 @@ config GPIO_BCM_KONA
 
 config GPIO_BCM_XGS_IPROC
 	tristate "BRCM XGS iProc GPIO support"
-	depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
+	depends on ARCH_BCM_IPROC || COMPILE_TEST
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	default ARCH_BCM_IPROC
@@ -218,7 +215,7 @@ config GPIO_BCM_XGS_IPROC
 config GPIO_BRCMSTB
 	tristate "BRCMSTB GPIO support"
 	default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
-	depends on OF_GPIO && (ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST)
+	depends on ARCH_BRCMSTB || ARCH_BCM2835 || BMIPS_GENERIC || COMPILE_TEST
 	select GPIO_GENERIC
 	select IRQ_DOMAIN
 	help
@@ -226,7 +223,6 @@ config GPIO_BRCMSTB
 
 config GPIO_CADENCE
 	tristate "Cadence GPIO support"
-	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	help
@@ -257,7 +253,6 @@ config GPIO_DWAPB
 config GPIO_EIC_SPRD
 	tristate "Spreadtrum EIC support"
 	depends on ARCH_SPRD || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	help
 	  Say yes here to support Spreadtrum EIC device.
@@ -306,7 +301,6 @@ config GPIO_GE_FPGA
 
 config GPIO_FTGPIO010
 	bool "Faraday FTGPIO010 GPIO"
-	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	default (ARCH_GEMINI || ARCH_MOXART)
@@ -359,7 +353,6 @@ config GPIO_HISI
 
 config GPIO_HLWD
 	tristate "Nintendo Wii (Hollywood) GPIO"
-	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	help
@@ -412,7 +405,6 @@ config GPIO_LOONGSON
 config GPIO_LOONGSON_64BIT
 	tristate "Loongson 64 bit GPIO support"
 	depends on LOONGARCH || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIO_GENERIC
 	help
 	  Say yes here to support the GPIO functionality of a number of
@@ -424,7 +416,7 @@ config GPIO_LOONGSON_64BIT
 config GPIO_LPC18XX
 	tristate "NXP LPC18XX/43XX GPIO support"
 	default y if ARCH_LPC18XX
-	depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
+	depends on ARCH_LPC18XX || COMPILE_TEST
 	select IRQ_DOMAIN_HIERARCHY
 	help
 	  Select this option to enable GPIO driver for
@@ -432,7 +424,7 @@ config GPIO_LPC18XX
 
 config GPIO_LPC32XX
 	tristate "NXP LPC32XX GPIO support"
-	depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
+	depends on ARCH_LPC32XX || COMPILE_TEST
 	help
 	  Select this option to enable GPIO driver for
 	  NXP LPC32XX devices.
@@ -477,7 +469,6 @@ config GPIO_MPC8XXX
 config GPIO_MT7621
 	bool "Mediatek MT7621 GPIO Support"
 	depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	help
@@ -562,7 +553,6 @@ config GPIO_RCAR
 config GPIO_RDA
 	bool "RDA Micro GPIO controller support"
 	depends on ARCH_RDA || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	help
@@ -612,7 +602,6 @@ config GPIO_RTD
 config GPIO_SAMA5D2_PIOBU
 	tristate "SAMA5D2 PIOBU GPIO support"
 	depends on MFD_SYSCON
-	depends on OF_GPIO
 	depends on ARCH_AT91 || COMPILE_TEST
 	select GPIO_SYSCON
 	help
@@ -624,7 +613,6 @@ config GPIO_SAMA5D2_PIOBU
 
 config GPIO_SIFIVE
 	tristate "SiFive GPIO support"
-	depends on OF_GPIO
 	select IRQ_DOMAIN_HIERARCHY
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
@@ -643,7 +631,6 @@ config GPIO_SIOX
 config GPIO_SNPS_CREG
 	bool "Synopsys GPIO via CREG (Control REGisters) driver"
 	depends on ARC || COMPILE_TEST
-	depends on OF_GPIO
 	help
 	  This driver supports GPIOs via CREG on various Synopsys SoCs.
 	  This is a single-register MMIO GPIO driver for complex cases
@@ -660,7 +647,6 @@ config GPIO_SPEAR_SPICS
 config GPIO_SPRD
 	tristate "Spreadtrum GPIO support"
 	depends on ARCH_SPRD || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	help
 	  Say yes here to support Spreadtrum GPIO device.
@@ -668,7 +654,6 @@ config GPIO_SPRD
 config GPIO_STP_XWAY
 	bool "XWAY STP GPIOs"
 	depends on SOC_XWAY || COMPILE_TEST
-	depends on OF_GPIO
 	help
 	  This enables support for the Serial To Parallel (STP) unit found on
 	  XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
@@ -703,7 +688,6 @@ config GPIO_TEGRA
 	tristate "NVIDIA Tegra GPIO support"
 	default ARCH_TEGRA
 	depends on ARCH_TEGRA || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	select IRQ_DOMAIN_HIERARCHY
 	help
@@ -713,7 +697,6 @@ config GPIO_TEGRA186
 	tristate "NVIDIA Tegra186 GPIO support"
 	default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
 	depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	select IRQ_DOMAIN_HIERARCHY
 	help
@@ -721,7 +704,6 @@ config GPIO_TEGRA186
 
 config GPIO_TS4800
 	tristate "TS-4800 DIO blocks and compatibles"
-	depends on OF_GPIO
 	depends on SOC_IMX51 || COMPILE_TEST
 	select GPIO_GENERIC
 	help
@@ -741,7 +723,6 @@ config GPIO_THUNDERX
 config GPIO_UNIPHIER
 	tristate "UniPhier GPIO support"
 	depends on ARCH_UNIPHIER || COMPILE_TEST
-	depends on OF_GPIO
 	select IRQ_DOMAIN_HIERARCHY
 	help
 	  Say yes here to support UniPhier GPIOs.
@@ -757,7 +738,6 @@ config GPIO_VF610
 config GPIO_VISCONTI
 	tristate "Toshiba Visconti GPIO support"
 	depends on ARCH_VISCONTI || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	select GPIO_GENERIC
 	select IRQ_DOMAIN_HIERARCHY
@@ -1071,7 +1051,6 @@ menu "I2C GPIO expanders"
 
 config GPIO_ADNP
 	tristate "Avionic Design N-bit GPIO expander"
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	help
 	  This option enables support for N GPIOs found on Avionic Design
@@ -1104,7 +1083,6 @@ config GPIO_DS4520
 
 config GPIO_GW_PLD
 	tristate "Gateworks PLD GPIO Expander"
-	depends on OF_GPIO
 	help
 	  Say yes here to provide access to the Gateworks I2C PLD GPIO
 	  Expander. This is used at least on the Cambria GW2358-4.
@@ -1466,7 +1444,6 @@ config GPIO_PALMAS
 config GPIO_PMIC_EIC_SPRD
 	tristate "Spreadtrum PMIC EIC support"
 	depends on MFD_SC27XX_PMIC || COMPILE_TEST
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	help
 	  Say yes here to support Spreadtrum PMIC EIC device.
@@ -1495,7 +1472,6 @@ config GPIO_SL28CPLD
 config GPIO_STMPE
 	bool "STMPE GPIOs"
 	depends on MFD_STMPE
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	help
 	  This enables support for the GPIOs found on the STMPE I/O
@@ -1504,7 +1480,6 @@ config GPIO_STMPE
 config GPIO_TC3589X
 	bool "TC3589X GPIOs"
 	depends on MFD_TC3589X
-	depends on OF_GPIO
 	select GPIOLIB_IRQCHIP
 	help
 	  This enables support for the GPIOs found on the TC3589X
@@ -1785,7 +1760,6 @@ menu "SPI GPIO expanders"
 
 config GPIO_74X164
 	tristate "74x164 serial-in/parallel-out 8-bits shift register"
-	depends on OF_GPIO
 	help
 	  Driver for 74x164 compatible serial-in/parallel-out 8-outputs
 	  shift registers. This driver can be used to provide access
-- 
2.45.2