Aquaris-M10-4G/drivers/misc/mediatek/video/mt6735/videox/mtk_mira.c

#define LOG_TAG "mtk_mira"

#include "disp_drv_log.h"

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/module.h>

#include "mtk_mira.h"
#include "mtk_disp_mgr.h"


#define DISP_DEVNAME "mtk_mira"

static struct proc_dir_entry *proc_entry;

static long disp_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	return mtk_disp_mgr_ioctl(file, cmd, arg);
}

static int disp_open(struct inode *inode, struct file *file)
{
	return 0;
}

static ssize_t disp_read(struct file *file, char __user *data, size_t len, loff_t *ppos)
{
	return 0;
}

static int disp_release(struct inode *inode, struct file *file)
{
	return 0;
}

static int disp_flush(struct file *file, fl_owner_t a_id)
{
	return 0;
}

/* remap register to user space */
static int disp_mmap(struct file *file, struct vm_area_struct *a_pstVMArea)
{
	return 0;
}

#ifdef CONFIG_COMPAT
static long disp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	long ret = -ENOIOCTLCMD;

	switch (cmd) {

		/* add cases here for 32bit/64bit conversion */
		/* ... */

	default:
		return mtk_disp_mgr_ioctl(file, cmd, arg);
	}
	return ret;
}
#endif


/* Kernel interface */
static const struct file_operations disp_fops = {
	.owner = THIS_MODULE,
	.unlocked_ioctl = disp_unlocked_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl = disp_compat_ioctl,
#endif
	.open = disp_open,
	.release = disp_release,
	.flush = disp_flush,
	.read = disp_read,
	.mmap = disp_mmap
};

static int __init disp_init(void)
{
	int ret = 0;

	DISPMSG("Register the disp driver\n");
	proc_entry = proc_create(DISP_DEVNAME, 0644, NULL, &disp_fops);
	if (proc_entry == NULL)
		ret = -ENOMEM;

	return ret;
}

static void __exit disp_exit(void)
{
	remove_proc_entry(DISP_DEVNAME, proc_entry);
	DISPMSG("Done\n");
}
module_init(disp_init);
module_exit(disp_exit);
MODULE_AUTHOR("Tzu-Meng, Chung <Tzu-Meng.Chung@mediatek.com>");
MODULE_DESCRIPTION("Display subsystem Driver");
MODULE_LICENSE("GPL");