gpio: mxc: Support module build (12d16b39) · Commits · 戴 / test

Change config to tristate, add module device table, module author, description and license to support module build for i.MX GPIO driver. As this is a SoC GPIO module, it provides common functions for most of the peripheral devices, such as GPIO pins control, secondary interrupt controller for GPIO pins IRQ etc., without GPIO driver, most of the peripheral devices will NOT work properly, so GPIO module is similar with clock, pinctrl driver that should be loaded ONCE and never unloaded. Since MXC GPIO driver needs to have init function to register syscore ops once, here still use subsys_initcall(), NOT module_platform_driver(). Signed-off-by:

Anson Huang <Anson.Huang@nxp.com> Link: https://lore.kernel.org/r/1600320829-1453-1-git-send-email-Anson.Huang@nxp.com Signed-off-by:

Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -397,7 +397,7 @@ config GPIO_MVEBU
		select REGMAP_MMIO

		config GPIO_MXC
		def_bool y
		tristate "i.MX GPIO support"
		depends on ARCH_MXC \|\| COMPILE_TEST
		select GPIO_GENERIC
		select GENERIC_IRQ_CHIP

drivers/gpio/gpio-mxc.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@
		#include <linux/irq.h>
		#include <linux/irqdomain.h>
		#include <linux/irqchip/chained_irq.h>
		#include <linux/module.h>
		#include <linux/platform_device.h>
		#include <linux/slab.h>
		#include <linux/syscore_ops.h>
		@@ -158,6 +159,7 @@ static const struct of_device_id mxc_gpio_dt_ids[] = {
		{ .compatible = "fsl,imx7d-gpio", .data = &mxc_gpio_devtype[IMX35_GPIO], },
		{ /* sentinel */ }
		};
		MODULE_DEVICE_TABLE(of, mxc_gpio_dt_ids);

		/*
		* MX2 has one interrupt for all gpio ports. The list is used
		@@ -604,3 +606,7 @@ static int __init gpio_mxc_init(void)
		return platform_driver_register(&mxc_gpio_driver);
		}
		subsys_initcall(gpio_mxc_init);

		MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
		MODULE_DESCRIPTION("i.MX GPIO Driver");
		MODULE_LICENSE("GPL");

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