summaryrefslogtreecommitdiffstats
path: root/drivers/char/lcd.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-20 10:14:29 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-20 10:14:29 -0800
commitd7f786e06538081dd10c97931a89418699fe609d (patch)
tree750c6b313711c9df5d6a12197587e0372764df13 /drivers/char/lcd.c
parente5717c48ed52feebd59756578debd34eaeb9d262 (diff)
parentf00a3ec4d47b51c5995fe10f8252a90aca331e62 (diff)
downloadop-kernel-dev-d7f786e06538081dd10c97931a89418699fe609d.zip
op-kernel-dev-d7f786e06538081dd10c97931a89418699fe609d.tar.gz
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [NET] Eliminate user-selectable CONFIG_MV643XX_ETH_[012] [MIPS] Drop __init from init_8259A() [MIPS] Fix Kconfig typo bug [MIPS] Fix double signal on trap and break instruction [MIPS] sigset_32 has been made redundand by compat_sigset_t. [MIPS] emma2rh: Remove needless <asm/i8259.h> inclusion. [MIPS] Add MTD device support for Cobalt
Diffstat (limited to 'drivers/char/lcd.c')
-rw-r--r--drivers/char/lcd.c168
1 files changed, 0 insertions, 168 deletions
diff --git a/drivers/char/lcd.c b/drivers/char/lcd.c
index d649abb..5f4fdcf 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);
OpenPOWER on IntegriCloud