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/*
* Copyright (C) 2012 Spreadtrum Communications Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/poll.h>
#include <linux/fs.h>
#include <linux/irq.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/miscdevice.h>
#include <asm/io.h>
#include <linux/file.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/spinlock_types.h>
#include <linux/semaphore.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <video/isp_drv_kernel.h>
#include <linux/clk.h>
#include <asm/cacheflush.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include "Shark_reg_isp.h"
#define DEBUG_ISP_DRV
#ifdef DEBUG_ISP_DRV
#define ISP_PRINT printk
#else
#define ISP_PRINT(...)
#endif
#define ISP_MINOR MISC_DYNAMIC_MINOR/*isp minor number*/
static struct proc_dir_entry* isp_proc_file;
/**file operation functions declare**/
static int32_t _isp_kernel_open(struct inode *node, struct file *filp);
static int32_t _isp_kernel_release(struct inode *node, struct file *filp);
static long _isp_kernel_ioctl( struct file *fl, unsigned int cmd, unsigned long param);
/**driver' functions declare**/
static int32_t _isp_probe(struct platform_device *pdev);
static int32_t _isp_remove(struct platform_device *dev);
/**module' functions declare**/
static int32_t __init isp_kernel_init(void);
static void isp_kernel_exit(void);
static struct file_operations isp_fops = {
.owner = THIS_MODULE,
.open = _isp_kernel_open,
.unlocked_ioctl = _isp_kernel_ioctl,
.release = _isp_kernel_release,
};
static struct miscdevice isp_dev = {
.minor = ISP_MINOR,
.name = "sprd_isp",
.fops = &isp_fops,
};
static const struct of_device_id of_match_table_isp[] = {
{ .compatible = "sprd,sprd_isp", },
{ },
};
static struct platform_driver isp_driver = {
.probe = _isp_probe,
.remove = _isp_remove,
.driver = {
.owner = THIS_MODULE,
.name = "sprd_isp",
.of_match_table = of_match_ptr(of_match_table_isp),
},
};
/**********************************************************
*open the device
*
***********************************************************/
static int32_t _isp_kernel_open (struct inode *node, struct file *pf)
{
int32_t ret = 0;
ISP_PRINT ("isp_k: open start \n");
return ret;
}
//static irqreturn_t _dcam_irq_root(int irq, void *dev_id)
void _dcam_isp_root(void)
{
int32_t ret = 0;
return IRQ_HANDLED;
}
/**********************************************************
*release the device
*
***********************************************************/
static int32_t _isp_kernel_release (struct inode *node, struct file *pf)
{
int ret = 0;
ISP_PRINT ("isp_k: release start \n");
ISP_PRINT ("isp_k: release end \n");
return ret;
}
/**********************************************************
*read info from file
*size_t size:
*loff_t p:
***********************************************************/
static int32_t _isp_kernel_proc_read (char *page, char **start, off_t off, int count, int *eof, void *data)
{
int len = 0;
#if 0
uint32_t reg_buf_len = 200;
uint32_t print_len = 0, print_cnt = 0;
uint32_t *reg_ptr = 0;
ISP_PRINT ("isp_k: _isp_kernel_proc_read 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x \n", (uint32_t)page, (uint32_t)start, (uint32_t)off, (uint32_t)count, (uint32_t)eof, (uint32_t)data);
(void)start; (void)off; (void)count; (void)eof;
if(0x00==g_isp_device.reg_base_addr)
{
return 0x00;
}
reg_ptr = (uint32_t*)g_isp_device.reg_base_addr;
len += sprintf(page + len, "Context for ISP device \n");
len += sprintf(page + len, "********************************************* \n");
while (print_len < reg_buf_len) {
len += sprintf(page + len, "offset 0x%x : 0x%x, 0x%x, 0x%x, 0x%x \n",
print_len,
reg_ptr[print_cnt],
reg_ptr[print_cnt+1],
reg_ptr[print_cnt+2],
reg_ptr[print_cnt+3]);
print_cnt += 4;
print_len += 16;
}
len += sprintf(page + len, "********************************************* \n");
len += sprintf(page + len, "The end of ISP device \n");
#endif
return len;
}
/**********************************************************
*the io controller of isp
*unsigned int cmd:
*unsigned long param:
***********************************************************/
static long _isp_kernel_ioctl( struct file *fl, unsigned int cmd, unsigned long param)
{
long ret = 0;
if(ISP_IO_IRQ==cmd)
{
} else {
switch (cmd)
{
case ISP_IO_READ: {
}
break;
case ISP_IO_WRITE: {
}
break;
case ISP_IO_RST: {
ISP_PRINT(" isp_k:ioctl restet start \n");
}
break;
case ISP_IO_SETCLK:
ISP_PRINT(" isp_k:ioctl set clock start \n");
break;
case ISP_IO_STOP: {
}
break;
case ISP_IO_INT: {
}
break;
case ISP_IO_DCAM_INT: {
}
break;
case ISP_IO_LNC_PARAM: {
}
break;
case ISP_IO_LNC: {
}
break;
case ISP_IO_ALLOC: {
}
break;
default:
ISP_PRINT("isp_k:_ioctl cmd is unsupported, cmd = %x\n", (int32_t)cmd);
return -EFAULT;
}
}
//ISP_PRINT("isp_k:_ioctl finished\n");
ISP_IOCTL_EXIT:
return ret;
}
static int _isp_probe(struct platform_device *pdev)
{
int ret = 0;
ISP_PRINT ("isp_k:probe start\n");
ret = misc_register(&isp_dev);
if (ret) {
ISP_PRINT ( "isp_k:probe cannot register miscdev on minor=%d (%d)\n",(int32_t)ISP_MINOR, (int32_t)ret);
return ret;
}
/*
isp_proc_file = create_proc_read_entry("driver/sprd_isp" ,
0444,
NULL,
_isp_kernel_proc_read,
NULL);
if (unlikely(NULL == isp_proc_file)) {
ISP_PRINT("isp_k:probe Can't create an entry for isp in /proc \n");
ret = ENOMEM;
return ret;
}
*/
isp_dev.this_device->of_node = pdev->dev.of_node;
ISP_PRINT (" isp_k:probe end\n");
return 0;
}
static int _isp_remove(struct platform_device * dev)
{
ISP_PRINT ("isp_k: remove start \n");
misc_deregister(&isp_dev);
if (isp_proc_file) {
remove_proc_entry("driver/sprd_isp", NULL);
}
ISP_PRINT ("isp_k: remove end !\n");
return 0;
}
static int32_t __init isp_kernel_init(void)
{
int32_t ret = 0;
uint32_t addr = 0;
ISP_PRINT ("isp_k: init start \n");
if (platform_driver_register(&isp_driver) != 0) {
ISP_PRINT ("isp_kernel_init: platform device register error \n");
return -1;
}
ISP_PRINT ("isp_k: init end\n");
return ret;
}
static void isp_kernel_exit(void)
{
ISP_PRINT ("isp_k: exit start \n");
platform_driver_unregister(&isp_driver);
ISP_PRINT ("isp_k: exit end \n");
}
module_init(isp_kernel_init);
module_exit(isp_kernel_exit);
MODULE_DESCRIPTION("Isp Driver");
MODULE_LICENSE("GPL");
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