[MIPS] Add MTD device support for Cobalt

This patch has added MTD device support for Cobalt.
Moreover, removes old type FlashROM support.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 0 insertions, 200 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);
 
diff --git a/drivers/char/lcd.h b/drivers/char/lcd.h
index a8d4ae73715..290b3ff23b0 100644
--- a/drivers/char/lcd.h
+++ b/drivers/char/lcd.h
@@ -14,11 +14,7 @@
 
 // function headers
 
-static int dqpoll(volatile unsigned long, volatile unsigned char );
-static int timeout(volatile unsigned long);
-
 #define LCD_CHARS_PER_LINE 40
-#define FLASH_SIZE 524288
 #define MAX_IDLE_TIME 120
 
 struct lcd_display {
@@ -54,26 +50,6 @@ struct lcd_display {
 #define LCDTimeoutValue 0xfff
 
 
-// Flash definitions AMD 29F040
-#define kFlashBase      0x0FC00000
-
-#define kFlash_Addr1    0x5555
-#define kFlash_Addr2    0x2AAA
-#define kFlash_Data1    0xAA
-#define kFlash_Data2    0x55
-#define kFlash_Prog     0xA0
-#define kFlash_Erase3   0x80
-#define kFlash_Erase6   0x10
-#define kFlash_Read     0xF0
-
-#define kFlash_ID       0x90
-#define kFlash_VenAddr  0x00
-#define kFlash_DevAddr  0x01
-#define kFlash_VenID    0x01
-#define kFlash_DevID    0xA4    // 29F040
-//#define kFlash_DevID  0xAD    // 29F016
-
-
 // Macros
 
 #define LCDWriteData(x) outl((x << 24), kLCD_DR)
@@ -89,9 +65,6 @@ struct lcd_display {
 #define WRITE_GAL(x,y)  outl(y, 0x04000000 | (x))
 #define BusyCheck()     while ((LCDReadInst & 0x80) == 0x80)
 
-#define WRITE_FLASH(x,y) outb((char)y, kFlashBase | (x))
-#define READ_FLASH(x)   (inb(kFlashBase | (x)))
-
 
 
 /*
@@ -124,11 +97,6 @@ struct lcd_display {
 //  Button defs
 #define BUTTON_Read             50
 
-//  Flash command codes
-#define FLASH_Erase             60
-#define FLASH_Burn              61
-#define FLASH_Read              62
-
 
 // Ethernet LINK check hackaroo
 #define LINK_Check              90