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#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include "platform.h"
static const struct of_device_id lork_ids[] = {
{ .compatible = "gpio-extern" },
{},
};
struct platform_driver lork_driver = {
.probe = lork_probe,
.remove = lork_remove,
.driver = {
.name = "gpio-extern",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(lork_ids),
}
};
static int mod_init(void) {
printk("%s()\n", __PRETTY_FUNCTION__);
// // configure gpio mux
// uint32_t* conf_gpmc_a3 = ioremap(TI_AM335X_CM_GPMC_A3_ADDR, sizeof(ti_am335x_word_t));
// if (conf_gpmc_a3 == NULL)
// return -EINVAL;
// barrier();
// uint32_t val = ioread32(conf_gpmc_a3); rmb();
// val &= ~0x7;
// val |= 0x7;
// iowrite32(val, conf_gpmc_a3); wmb();
// iounmap(conf_gpmc_a3);
// // configure output pin
// ti_am335x_word_t* gpio1 = ioremap(TI_AM335X_GPIO1_ADDR, GPIO_REG_SIZE);
// barrier();
// ti_am335x_word_t oe_reg = ioread32(gpio1 + GPIO_OE); rmb();
// oe_reg &= ~(1<<PIN); // 0=output
// iowrite32(oe_reg, gpio1 + GPIO_OE); wmb();
// iounmap(gpio1);
return platform_driver_register(&lork_driver);
}
static void mod_exit(void) {
printk("%s()\n", __PRETTY_FUNCTION__);
platform_driver_unregister(&lork_driver);
}
module_init(mod_init);
module_exit(mod_exit);
MODULE_LICENSE("Dual MIT/GPL");
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