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/* linux/drivers/video/samsung/mdnie_tunning.c
*
* Register interface file for Samsung mDNIe driver
*
* Copyright (c) 2011 Samsung Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/ctype.h>
#include <linux/uaccess.h>
#include "s3cfb.h"
#include "mdnie.h"
static unsigned short mdnie_data[100];
static int parse_text(char *src, int len)
{
int i, count, ret;
int index = 0;
char *str_line[100];
char *sstart;
char *c;
unsigned int data1, data2;
c = src;
count = 0;
sstart = c;
for (i = 0; i < len; i++, c++) {
char a = *c;
if (a == '\r' || a == '\n') {
if (c > sstart) {
str_line[count] = sstart;
count++;
}
*c = '\0';
sstart = c+1;
}
}
if (c > sstart) {
str_line[count] = sstart;
count++;
}
/* printk(KERN_INFO "----------------------------- Total number of lines:%d\n", count); */
for (i = 0; i < count; i++) {
/* printk(KERN_INFO "line:%d, [start]%s[end]\n", i, str_line[i]); */
ret = sscanf(str_line[i], "0x%x,0x%x\n", &data1, &data2);
/* printk(KERN_INFO "Result => [0x%2x 0x%4x] %s\n", data1, data2, (ret == 2) ? "Ok" : "Not available"); */
if (ret == 2) {
mdnie_data[index++] = (unsigned short)data1;
mdnie_data[index++] = (unsigned short)data2;
}
}
return index;
}
int mdnie_txtbuf_to_parsing(char const *pFilepath)
{
struct file *filp;
char *dp;
long l;
loff_t pos;
int ret, num;
mm_segment_t fs;
fs = get_fs();
set_fs(get_ds());
printk(KERN_INFO "%s:", pFilepath);
if (!pFilepath) {
printk(KERN_ERR "Error : mdnie_txtbuf_to_parsing has invalid filepath.\n");
goto parse_err;
}
filp = filp_open(pFilepath, O_RDONLY, 0);
if (IS_ERR(filp)) {
printk(KERN_ERR "file open error:%d\n", (s32)filp);
goto parse_err;
}
l = filp->f_path.dentry->d_inode->i_size;
dp = kmalloc(l+10, GFP_KERNEL); /* add cushion : origianl code is 'dp = kmalloc(l, GFP_KERNEL);' */
if (dp == NULL) {
printk(KERN_INFO "Out of Memory!\n");
filp_close(filp, current->files);
goto parse_err;
}
pos = 0;
memset(dp, 0, l);
ret = vfs_read(filp, (char __user *)dp, l, &pos);
if (ret != l) {
printk(KERN_INFO "<CMC623> Failed to read file (ret = %d)\n", ret);
kfree(dp);
filp_close(filp, current->files);
goto parse_err;
}
filp_close(filp, current->files);
set_fs(fs);
num = parse_text(dp, l);
if (!num) {
printk(KERN_ERR "Nothing to parse!\n");
kfree(dp);
goto parse_err;
}
mdnie_data[num] = END_SEQ;
mdnie_send_sequence(g_mdnie, mdnie_data);
kfree(dp);
num = num / 2;
return num;
parse_err:
return -EPERM;
}
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