@@ -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
@@ -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");
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> --- Changes since V1: - no code change, just add detail explanation about why this patch does NOT support module unloaded. --- drivers/gpio/Kconfig | 2 +- drivers/gpio/gpio-mxc.c | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-)