1 files changed, 44 insertions, 53 deletions

diff --git a/drivers/mtd/nand/edb7312.c b/drivers/mtd/nand/edb7312.c
index 9b1fd2f387fa..516c0e5e564c 100644
--- a/drivers/mtd/nand/edb7312.c
+++ b/drivers/mtd/nand/edb7312.c
@@ -1,7 +1,7 @@
 /*
  *  drivers/mtd/nand/edb7312.c
  *
- *  Copyright (C) 2002 Marius Gr๖ger (mag@sysgo.de)
+ *  Copyright (C) 2002 Marius Grรถger (mag@sysgo.de)
  *
  *  Derived from drivers/mtd/nand/autcpu12.c
  *       Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
@@ -25,7 +25,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/partitions.h>
 #include <asm/io.h>
-#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */
+#include <asm/arch/hardware.h>  /* for CLPS7111_VIRT_BASE */
 #include <asm/sizes.h>
 #include <asm/hardware/clps7111.h>
 
@@ -54,51 +54,45 @@ static struct mtd_info *ep7312_mtd = NULL;
  */
 
 static unsigned long ep7312_fio_pbase = EP7312_FIO_PBASE;
-static void __iomem * ep7312_pxdr = (void __iomem *) EP7312_PXDR;
-static void __iomem * ep7312_pxddr = (void __iomem *) EP7312_PXDDR;
+static void __iomem *ep7312_pxdr = (void __iomem *)EP7312_PXDR;
+static void __iomem *ep7312_pxddr = (void __iomem *)EP7312_PXDDR;
 
 #ifdef CONFIG_MTD_PARTITIONS
 /*
  * Define static partitions for flash device
  */
 static struct mtd_partition partition_info[] = {
-        { .name = "EP7312 Nand Flash",
-                  .offset = 0,
-                  .size = 8*1024*1024 }
+        {.name = "EP7312 Nand Flash",
+         .offset = 0,
+         .size = 8 * 1024 * 1024}
 };
+
 #define NUM_PARTITIONS 1
 
 #endif
 
-
 /*
  *      hardware specific access to control-lines
+ *
+ *      NAND_NCE: bit 0 -> bit 7
+ *      NAND_CLE: bit 1 -> bit 4
+ *      NAND_ALE: bit 2 -> bit 5
  */
-static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd)
+static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
 {
-        switch(cmd) {
-
-        case NAND_CTL_SETCLE:
-                clps_writeb(clps_readb(ep7312_pxdr) | 0x10, ep7312_pxdr);
-                break;
-        case NAND_CTL_CLRCLE:
-                clps_writeb(clps_readb(ep7312_pxdr) & ~0x10, ep7312_pxdr);
-                break;
-
-        case NAND_CTL_SETALE:
-                clps_writeb(clps_readb(ep7312_pxdr) | 0x20, ep7312_pxdr);
-                break;
-        case NAND_CTL_CLRALE:
-                clps_writeb(clps_readb(ep7312_pxdr) & ~0x20, ep7312_pxdr);
-                break;
-
-        case NAND_CTL_SETNCE:
-                clps_writeb((clps_readb(ep7312_pxdr) | 0x80) & ~0x40, ep7312_pxdr);
-                break;
-        case NAND_CTL_CLRNCE:
-                clps_writeb((clps_readb(ep7312_pxdr) | 0x80) | 0x40, ep7312_pxdr);
-                break;
+        struct nand_chip *chip = mtd->priv;
+
+        if (ctrl & NAND_CTRL_CHANGE) {
+                unsigned char bits;
+
+                bits = (ctrl & (NAND_CLE | NAND_ALE)) << 3;
+                bits = (ctrl & NAND_NCE) << 7;
+
+                clps_writeb((clps_readb(ep7312_pxdr)  & 0xB0) | 0x10,
+                            ep7312_pxdr);
         }
+        if (cmd != NAND_CMD_NONE)
+                writeb(cmd, chip->IO_ADDR_W);
 }
 
 /*
@@ -108,6 +102,7 @@ static int ep7312_device_ready(struct mtd_info *mtd)
 {
         return 1;
 }
+
 #ifdef CONFIG_MTD_PARTITIONS
 const char *part_probes[] = { "cmdlinepart", NULL };
 #endif
@@ -115,18 +110,16 @@ const char *part_probes[] = { "cmdlinepart", NULL };
 /*
  * Main initialization routine
  */
-static int __init ep7312_init (void)
+static int __init ep7312_init(void)
 {
         struct nand_chip *this;
         const char *part_type = 0;
         int mtd_parts_nb = 0;
         struct mtd_partition *mtd_parts = 0;
-        void __iomem * ep7312_fio_base;
+        void __iomem *ep7312_fio_base;
 
         /* Allocate memory for MTD device structure and private data */
-        ep7312_mtd = kmalloc(sizeof(struct mtd_info) +
-                             sizeof(struct nand_chip),
-                             GFP_KERNEL);
+        ep7312_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
         if (!ep7312_mtd) {
                 printk("Unable to allocate EDB7312 NAND MTD device structure.\n");
                 return -ENOMEM;
@@ -134,21 +127,22 @@ static int __init ep7312_init (void)
 
         /* map physical adress */
         ep7312_fio_base = ioremap(ep7312_fio_pbase, SZ_1K);
-        if(!ep7312_fio_base) {
+        if (!ep7312_fio_base) {
                 printk("ioremap EDB7312 NAND flash failed\n");
                 kfree(ep7312_mtd);
                 return -EIO;
         }
 
         /* Get pointer to private data */
-        this = (struct nand_chip *) (&ep7312_mtd[1]);
+        this = (struct nand_chip *)(&ep7312_mtd[1]);
 
         /* Initialize structures */
-        memset((char *) ep7312_mtd, 0, sizeof(struct mtd_info));
-        memset((char *) this, 0, sizeof(struct nand_chip));
+        memset(ep7312_mtd, 0, sizeof(struct mtd_info));
+        memset(this, 0, sizeof(struct nand_chip));
 
         /* Link the private data with the MTD structure */
         ep7312_mtd->priv = this;
+        ep7312_mtd->owner = THIS_MODULE;
 
         /*
          * Set GPIO Port B control register so that the pins are configured
@@ -159,22 +153,20 @@ static int __init ep7312_init (void)
         /* insert callbacks */
         this->IO_ADDR_R = ep7312_fio_base;
         this->IO_ADDR_W = ep7312_fio_base;
-        this->hwcontrol = ep7312_hwcontrol;
+        this->cmd_ctrl = ep7312_hwcontrol;
         this->dev_ready = ep7312_device_ready;
         /* 15 us command delay time */
         this->chip_delay = 15;
 
         /* Scan to find existence of the device */
-        if (nand_scan (ep7312_mtd, 1)) {
+        if (nand_scan(ep7312_mtd, 1)) {
                 iounmap((void *)ep7312_fio_base);
-                kfree (ep7312_mtd);
+                kfree(ep7312_mtd);
                 return -ENXIO;
         }
-
 #ifdef CONFIG_MTD_PARTITIONS
         ep7312_mtd->name = "edb7312-nand";
-        mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes,
-                                            &mtd_parts, 0);
+        mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes, &mtd_parts, 0);
         if (mtd_parts_nb > 0)
                 part_type = "command line";
         else
@@ -193,24 +185,23 @@ static int __init ep7312_init (void)
         /* Return happy */
         return 0;
 }
+
 module_init(ep7312_init);
 
 /*
  * Clean up routine
  */
-static void __exit ep7312_cleanup (void)
+static void __exit ep7312_cleanup(void)
 {
-        struct nand_chip *this = (struct nand_chip *) &ep7312_mtd[1];
+        struct nand_chip *this = (struct nand_chip *)&ep7312_mtd[1];
 
         /* Release resources, unregister device */
-        nand_release (ap7312_mtd);
-
-        /* Free internal data buffer */
-        kfree (this->data_buf);
+        nand_release(ap7312_mtd);
 
         /* Free the MTD device structure */
-        kfree (ep7312_mtd);
+        kfree(ep7312_mtd);
 }
+
 module_exit(ep7312_cleanup);
 
 MODULE_LICENSE("GPL");