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#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/mm_types.h>
#include <linux/module.h>
#include <generated/autoconf.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/cdev.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <linux/spinlock.h>
#include <linux/param.h>
#include <linux/uaccess.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/semaphore.h>
#include <linux/slab.h>
#include "mtkfb_vsync.h"
#include "primary_display.h"
#if defined(CONFIG_MTK_HDMI_SUPPORT)
extern void hdmi_waitVsync(void);
#endif
#define VSYNC_DBG(...) pr_debug(MTKFB_VSYNC_DEVNAME __VA_ARGS__)
#define VSYNC_INF(...) pr_info(MTKFB_VSYNC_DEVNAME __VA_ARGS__)
#define VSYNC_WRN(...) pr_warn(MTKFB_VSYNC_DEVNAME __VA_ARGS__)
#define VSYNC_ERR(...) pr_err(MTKFB_VSYNC_DEVNAME __VA_ARGS__)
static size_t mtkfb_vsync_on = false;
#define MTKFB_VSYNC_LOG(fmt, arg...) \
do { \
if (mtkfb_vsync_on) VSYNC_WRN(fmt, ##arg); \
}while (0)
#define MTKFB_VSYNC_FUNC() \
do { \
if(mtkfb_vsync_on) VSYNC_WRN("[Func]%s\n", __func__); \
}while (0)
static dev_t mtkfb_vsync_devno;
static struct cdev *mtkfb_vsync_cdev;
static struct class *mtkfb_vsync_class = NULL;
DEFINE_SEMAPHORE(mtkfb_vsync_sem);
extern void mtkfb_waitVsync(void);
extern void mtkfb_disable_non_fb_layer(void);
void mtkfb_vsync_log_enable(int enable)
{
mtkfb_vsync_on = enable;
MTKFB_VSYNC_LOG("mtkfb_vsync log %s\n", enable?"enabled":"disabled");
}
static int mtkfb_vsync_open(struct inode *inode, struct file *file)
{
VSYNC_DBG("driver open\n");
return 0;
}
static ssize_t mtkfb_vsync_read(struct file *file, char __user *data, size_t len, loff_t *ppos)
{
VSYNC_DBG("driver read\n");
return 0;
}
static int mtkfb_vsync_release(struct inode *inode, struct file *file)
{
VSYNC_DBG("driver release\n");
VSYNC_DBG("reset overlay engine\n");
// mtkfb_disable_non_fb_layer();
return 0;
}
static int mtkfb_vsync_flush(struct file * a_pstFile , fl_owner_t a_id)
{
// To Do : error handling here
return 0;
}
static long mtkfb_vsync_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int ret = 0;
MTKFB_VSYNC_FUNC();
switch (cmd)
{
case MTKFB_VSYNC_IOCTL:
{
MTKFB_VSYNC_LOG("[MTKFB_VSYNC]: enter MTKFB_VSYNC_IOCTL\n");
if(arg == MTKFB_VSYNC_SOURCE_HDMI)
{
#if defined(CONFIG_MTK_HDMI_SUPPORT)
if (down_interruptible(&mtkfb_vsync_sem)) {
printk("[mtkfb_vsync_ioctl] can't get semaphore,%d\n", __LINE__);
msleep(20);
return ret;
}
hdmi_waitVsync();
up(&mtkfb_vsync_sem);
MTKFB_VSYNC_LOG("[MTKFB_VSYNC]: leave MTKFB_VSYNC_IOCTL, %d\n", __LINE__);
#else
MTKFB_VSYNC_LOG("[MTKFB_VSYNC]: NS leave MTKFB_VSYNC_IOCTL, %d\n", __LINE__);
ret = -EFAULT;
#endif
return ret;
}
if (down_interruptible(&mtkfb_vsync_sem)) {
printk("[mtkfb_vsync_ioctl] can't get semaphore,%d\n", __LINE__);
msleep(20);
return ret;
}
primary_display_wait_for_vsync(NULL);
up(&mtkfb_vsync_sem);
MTKFB_VSYNC_LOG("[MTKFB_VSYNC]: leave MTKFB_VSYNC_IOCTL\n");
}
break;
}
return ret;
}
static struct file_operations mtkfb_vsync_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = mtkfb_vsync_unlocked_ioctl,
.open = mtkfb_vsync_open,
.release = mtkfb_vsync_release,
.flush = mtkfb_vsync_flush,
.read = mtkfb_vsync_read,
};
static int mtkfb_vsync_probe(struct platform_device *pdev)
{
struct class_device;
struct class_device *class_dev = NULL;
printk("\n=== MTKFB_VSYNC probe ===\n");
if (alloc_chrdev_region(&mtkfb_vsync_devno, 0, 1, MTKFB_VSYNC_DEVNAME))
{
VSYNC_ERR("can't get device major number...\n");
return -EFAULT;
}
printk("get device major number (%d)\n", mtkfb_vsync_devno);
mtkfb_vsync_cdev = cdev_alloc();
mtkfb_vsync_cdev->owner = THIS_MODULE;
mtkfb_vsync_cdev->ops = &mtkfb_vsync_fops;
cdev_add(mtkfb_vsync_cdev, mtkfb_vsync_devno, 1);
mtkfb_vsync_class = class_create(THIS_MODULE, MTKFB_VSYNC_DEVNAME);
class_dev = (struct class_device *)device_create(mtkfb_vsync_class, NULL, mtkfb_vsync_devno, NULL, MTKFB_VSYNC_DEVNAME);
VSYNC_INF("probe is done\n");
return 0;
}
static int mtkfb_vsync_remove(struct platform_device *pdev)
{
VSYNC_INF("device remove\n");
return 0;
}
static void mtkfb_vsync_shutdown(struct platform_device *pdev)
{
printk("mtkfb_vsync device shutdown\n");
}
static int mtkfb_vsync_suspend(struct platform_device *pdev, pm_message_t mesg)
{
return 0;
}
static int mtkfb_vsync_resume(struct platform_device *pdev)
{
return 0;
}
static struct platform_driver mtkfb_vsync_driver = {
.probe = mtkfb_vsync_probe,
.remove = mtkfb_vsync_remove,
.shutdown = mtkfb_vsync_shutdown,
.suspend = mtkfb_vsync_suspend,
.resume = mtkfb_vsync_resume,
.driver = {
.name = MTKFB_VSYNC_DEVNAME,
},
};
static void mtkfb_vsync_device_release(struct device *dev)
{
}
static u64 mtkfb_vsync_dmamask = ~(u32)0;
static struct platform_device mtkfb_vsync_device = {
.name = MTKFB_VSYNC_DEVNAME,
.id = 0,
.dev = {
.release = mtkfb_vsync_device_release,
.dma_mask = &mtkfb_vsync_dmamask,
.coherent_dma_mask = 0xffffffff,
},
.num_resources = 0,
};
static int __init mtkfb_vsync_init(void)
{
VSYNC_INF("initializeing driver...\n");
if (platform_device_register(&mtkfb_vsync_device))
{
VSYNC_ERR("failed to register device\n");
return -ENODEV;
}
if (platform_driver_register(&mtkfb_vsync_driver))
{
VSYNC_ERR("failed to register driver\n");
platform_device_unregister(&mtkfb_vsync_device);
return -ENODEV;
}
return 0;
}
static void __exit mtkfb_vsync_exit(void)
{
cdev_del(mtkfb_vsync_cdev);
unregister_chrdev_region(mtkfb_vsync_devno, 1);
platform_driver_unregister(&mtkfb_vsync_driver);
platform_device_unregister(&mtkfb_vsync_device);
device_destroy(mtkfb_vsync_class, mtkfb_vsync_devno);
class_destroy(mtkfb_vsync_class);
VSYNC_INF("exit driver...\n");
}
//module_init(mtkfb_vsync_init);
//module_exit(mtkfb_vsync_exit);
MODULE_DESCRIPTION("MediaTek FB VSYNC Driver");
MODULE_AUTHOR("Zaikuo Wang <Zaikuo.Wang@mediatek.com>");
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