diff options
Diffstat (limited to 'drivers/char/lcd.c')
| -rw-r--r-- | drivers/char/lcd.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/drivers/char/lcd.c b/drivers/char/lcd.c index d649abbf085..5f4fdcf7c96 100644 --- a/drivers/char/lcd.c +++ b/drivers/char/lcd.c @@ -409,138 +409,6 @@ static int lcd_ioctl(struct inode *inode, struct file *file, break; } -// Erase the flash - - case FLASH_Erase:{ - - int ctr = 0; - - if ( !capable(CAP_SYS_ADMIN) ) return -EPERM; - - pr_info(LCD "Erasing Flash\n"); - - // Chip Erase Sequence - WRITE_FLASH(kFlash_Addr1, kFlash_Data1); - WRITE_FLASH(kFlash_Addr2, kFlash_Data2); - WRITE_FLASH(kFlash_Addr1, kFlash_Erase3); - WRITE_FLASH(kFlash_Addr1, kFlash_Data1); - WRITE_FLASH(kFlash_Addr2, kFlash_Data2); - WRITE_FLASH(kFlash_Addr1, kFlash_Erase6); - - while ((!dqpoll(0x00000000, 0xFF)) - && (!timeout(0x00000000))) { - ctr++; - } - - if (READ_FLASH(0x07FFF0) == 0xFF) { - pr_info(LCD "Erase Successful\n"); - } else if (timeout) { - pr_info(LCD "Erase Timed Out\n"); - } - - break; - } - -// burn the flash - - case FLASH_Burn:{ - - volatile unsigned long burn_addr; - unsigned long flags; - unsigned int i, index; - unsigned char *rom; - - - struct lcd_display display; - - if ( !capable(CAP_SYS_ADMIN) ) return -EPERM; - - if (copy_from_user - (&display, (struct lcd_display *) arg, - sizeof(struct lcd_display))) - return -EFAULT; - rom = kmalloc((128), GFP_ATOMIC); - if (rom == NULL) { - printk(KERN_ERR LCD "kmalloc() failed in %s\n", - __FUNCTION__); - return -ENOMEM; - } - - pr_info(LCD "Starting Flash burn\n"); - for (i = 0; i < FLASH_SIZE; i = i + 128) { - - if (copy_from_user - (rom, display.RomImage + i, 128)) { - kfree(rom); - return -EFAULT; - } - burn_addr = kFlashBase + i; - spin_lock_irqsave(&lcd_lock, flags); - for (index = 0; index < (128); index++) { - - WRITE_FLASH(kFlash_Addr1, - kFlash_Data1); - WRITE_FLASH(kFlash_Addr2, - kFlash_Data2); - WRITE_FLASH(kFlash_Addr1, - kFlash_Prog); - *((volatile unsigned char *)burn_addr) = - (volatile unsigned char) rom[index]; - - while ((!dqpoll (burn_addr, - (volatile unsigned char) - rom[index])) && - (!timeout(burn_addr))) { } - burn_addr++; - } - spin_unlock_irqrestore(&lcd_lock, flags); - if (* ((volatile unsigned char *) - (burn_addr - 1)) == - (volatile unsigned char) - rom[index - 1]) { - } else if (timeout) { - pr_info(LCD "Flash burn timed out\n"); - } - - - } - kfree(rom); - - pr_info(LCD "Flash successfully burned\n"); - - break; - } - -// read the flash all at once - - case FLASH_Read:{ - - unsigned char *user_bytes; - volatile unsigned long read_addr; - unsigned int i; - - user_bytes = - &(((struct lcd_display *) arg)->RomImage[0]); - - if (!access_ok - (VERIFY_WRITE, user_bytes, FLASH_SIZE)) - return -EFAULT; - - pr_info(LCD "Reading Flash"); - for (i = 0; i < FLASH_SIZE; i++) { - unsigned char tmp_byte; - read_addr = kFlashBase + i; - tmp_byte = - *((volatile unsigned char *) - read_addr); - if (__put_user(tmp_byte, &user_bytes[i])) - return -EFAULT; - } - - - break; - } - default: return -EINVAL; @@ -644,42 +512,6 @@ static void __exit lcd_exit(void) misc_deregister(&lcd_dev); } -// -// Function: dqpoll -// -// Description: Polls the data lines to see if the flash is busy -// -// In: address, byte data -// -// Out: 0 = busy, 1 = write or erase complete -// -// - -static int dqpoll(volatile unsigned long address, volatile unsigned char data) -{ - volatile unsigned char dq7; - - dq7 = data & 0x80; - - return ((READ_FLASH(address) & 0x80) == dq7); -} - -// -// Function: timeout -// -// Description: Checks to see if erase or write has timed out -// By polling dq5 -// -// In: address -// -// -// Out: 0 = not timed out, 1 = timed out - -static int timeout(volatile unsigned long address) -{ - return (READ_FLASH(address) & 0x20) == 0x20; -} - module_init(lcd_init); module_exit(lcd_exit); |