1 files changed, 73 insertions, 70 deletions

diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c
index bde3550910a2..50cbfd4826fb 100644
--- a/drivers/mtd/nand/au1550nd.c
+++ b/drivers/mtd/nand/au1550nd.c
@@ -38,22 +38,20 @@
  */
 static struct mtd_info *au1550_mtd = NULL;
 static void __iomem *p_nand;
-static int nand_width = 1; /* default x8*/
+static int nand_width = 1;      /* default x8 */
 
 /*
  * Define partitions for flash device
  */
 static const struct mtd_partition partition_info[] = {
         {
-                .name   = "NAND FS 0",
-                .offset = 0,
-                .size   = 8*1024*1024
-        },
+         .name = "NAND FS 0",
+         .offset = 0,
+         .size = 8 * 1024 * 1024},
         {
-                .name   = "NAND FS 1",
-                .offset =  MTDPART_OFS_APPEND,
-                .size   =    MTDPART_SIZ_FULL
-        }
+         .name = "NAND FS 1",
+         .offset = MTDPART_OFS_APPEND,
+         .size = MTDPART_SIZ_FULL}
 };
 
 /**
@@ -157,7 +155,7 @@ static void au_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
         int i;
         struct nand_chip *this = mtd->priv;
 
-        for (i=0; i<len; i++) {
+        for (i = 0; i < len; i++) {
                 writeb(buf[i], this->IO_ADDR_W);
                 au_sync();
         }
@@ -176,7 +174,7 @@ static void au_read_buf(struct mtd_info *mtd, u_char *buf, int len)
         int i;
         struct nand_chip *this = mtd->priv;
 
-        for (i=0; i<len; i++) {
+        for (i = 0; i < len; i++) {
                 buf[i] = readb(this->IO_ADDR_R);
                 au_sync();
         }
@@ -195,7 +193,7 @@ static int au_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
         int i;
         struct nand_chip *this = mtd->priv;
 
-        for (i=0; i<len; i++) {
+        for (i = 0; i < len; i++) {
                 if (buf[i] != readb(this->IO_ADDR_R))
                         return -EFAULT;
                 au_sync();
@@ -219,7 +217,7 @@ static void au_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
         u16 *p = (u16 *) buf;
         len >>= 1;
 
-        for (i=0; i<len; i++) {
+        for (i = 0; i < len; i++) {
                 writew(p[i], this->IO_ADDR_W);
                 au_sync();
         }
@@ -241,7 +239,7 @@ static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
         u16 *p = (u16 *) buf;
         len >>= 1;
 
-        for (i=0; i<len; i++) {
+        for (i = 0; i < len; i++) {
                 p[i] = readw(this->IO_ADDR_R);
                 au_sync();
         }
@@ -262,7 +260,7 @@ static int au_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len)
         u16 *p = (u16 *) buf;
         len >>= 1;
 
-        for (i=0; i<len; i++) {
+        for (i = 0; i < len; i++) {
                 if (p[i] != readw(this->IO_ADDR_R))
                         return -EFAULT;
                 au_sync();
@@ -275,27 +273,35 @@ static void au1550_hwcontrol(struct mtd_info *mtd, int cmd)
 {
         register struct nand_chip *this = mtd->priv;
 
-        switch(cmd){
+        switch (cmd) {
+
+        case NAND_CTL_SETCLE:
+                this->IO_ADDR_W = p_nand + MEM_STNAND_CMD;
+                break;
+
+        case NAND_CTL_CLRCLE:
+                this->IO_ADDR_W = p_nand + MEM_STNAND_DATA;
+                break;
 
-        case NAND_CTL_SETCLE: this->IO_ADDR_W = p_nand + MEM_STNAND_CMD; break;
-        case NAND_CTL_CLRCLE: this->IO_ADDR_W = p_nand + MEM_STNAND_DATA; break;
+        case NAND_CTL_SETALE:
+                this->IO_ADDR_W = p_nand + MEM_STNAND_ADDR;
+                break;
 
-        case NAND_CTL_SETALE: this->IO_ADDR_W = p_nand + MEM_STNAND_ADDR; break;
         case NAND_CTL_CLRALE:
                 this->IO_ADDR_W = p_nand + MEM_STNAND_DATA;
-                /* FIXME: Nobody knows why this is neccecary,
+                /* FIXME: Nobody knows why this is necessary,
                  * but it works only that way */
                 udelay(1);
                 break;
 
         case NAND_CTL_SETNCE:
                 /* assert (force assert) chip enable */
-                au_writel((1<<(4+NAND_CS)) , MEM_STNDCTL); break;
+                au_writel((1 << (4 + NAND_CS)), MEM_STNDCTL);
                 break;
 
         case NAND_CTL_CLRNCE:
-                /* deassert chip enable */
-                au_writel(0, MEM_STNDCTL); break;
+                /* deassert chip enable */
+                au_writel(0, MEM_STNDCTL);
                 break;
         }
 
@@ -315,66 +321,63 @@ int au1550_device_ready(struct mtd_info *mtd)
 /*
  * Main initialization routine
  */
-int __init au1xxx_nand_init (void)
+int __init au1xxx_nand_init(void)
 {
         struct nand_chip *this;
-        u16 boot_swapboot = 0; /* default value */
+        u16 boot_swapboot = 0;  /* default value */
         int retval;
         u32 mem_staddr;
         u32 nand_phys;
 
         /* Allocate memory for MTD device structure and private data */
-        au1550_mtd = kmalloc (sizeof(struct mtd_info) +
-                        sizeof (struct nand_chip), GFP_KERNEL);
+        au1550_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
         if (!au1550_mtd) {
-                printk ("Unable to allocate NAND MTD dev structure.\n");
+                printk("Unable to allocate NAND MTD dev structure.\n");
                 return -ENOMEM;
         }
 
         /* Get pointer to private data */
-        this = (struct nand_chip *) (&au1550_mtd[1]);
+        this = (struct nand_chip *)(&au1550_mtd[1]);
 
         /* Initialize structures */
-        memset((char *) au1550_mtd, 0, sizeof(struct mtd_info));
-        memset((char *) this, 0, sizeof(struct nand_chip));
+        memset(au1550_mtd, 0, sizeof(struct mtd_info));
+        memset(this, 0, sizeof(struct nand_chip));
 
         /* Link the private data with the MTD structure */
         au1550_mtd->priv = this;
 
-
         /* disable interrupts */
-        au_writel(au_readl(MEM_STNDCTL) & ~(1<<8), MEM_STNDCTL);
+        au_writel(au_readl(MEM_STNDCTL) & ~(1 << 8), MEM_STNDCTL);
 
         /* disable NAND boot */
-        au_writel(au_readl(MEM_STNDCTL) & ~(1<<0), MEM_STNDCTL);
+        au_writel(au_readl(MEM_STNDCTL) & ~(1 << 0), MEM_STNDCTL);
 
 #ifdef CONFIG_MIPS_PB1550
         /* set gpio206 high */
-        au_writel(au_readl(GPIO2_DIR) & ~(1<<6), GPIO2_DIR);
+        au_writel(au_readl(GPIO2_DIR) & ~(1 << 6), GPIO2_DIR);
 
-        boot_swapboot = (au_readl(MEM_STSTAT) & (0x7<<1)) |
-                ((bcsr->status >> 6)  & 0x1);
+        boot_swapboot = (au_readl(MEM_STSTAT) & (0x7 << 1)) | ((bcsr->status >> 6) & 0x1);
         switch (boot_swapboot) {
-                case 0:
-                case 2:
-                case 8:
-                case 0xC:
-                case 0xD:
-                        /* x16 NAND Flash */
-                        nand_width = 0;
-                        break;
-                case 1:
-                case 9:
-                case 3:
-                case 0xE:
-                case 0xF:
-                        /* x8 NAND Flash */
-                        nand_width = 1;
-                        break;
-                default:
-                        printk("Pb1550 NAND: bad boot:swap\n");
-                        retval = -EINVAL;
-                        goto outmem;
+        case 0:
+        case 2:
+        case 8:
+        case 0xC:
+        case 0xD:
+                /* x16 NAND Flash */
+                nand_width = 0;
+                break;
+        case 1:
+        case 9:
+        case 3:
+        case 0xE:
+        case 0xF:
+                /* x8 NAND Flash */
+                nand_width = 1;
+                break;
+        default:
+                printk("Pb1550 NAND: bad boot:swap\n");
+                retval = -EINVAL;
+                goto outmem;
         }
 #endif
 
@@ -424,14 +427,13 @@ int __init au1xxx_nand_init (void)
 
         /* make controller and MTD agree */
         if (NAND_CS == 0)
-                nand_width = au_readl(MEM_STCFG0) & (1<<22);
+                nand_width = au_readl(MEM_STCFG0) & (1 << 22);
         if (NAND_CS == 1)
-                nand_width = au_readl(MEM_STCFG1) & (1<<22);
+                nand_width = au_readl(MEM_STCFG1) & (1 << 22);
         if (NAND_CS == 2)
-                nand_width = au_readl(MEM_STCFG2) & (1<<22);
+                nand_width = au_readl(MEM_STCFG2) & (1 << 22);
         if (NAND_CS == 3)
-                nand_width = au_readl(MEM_STCFG3) & (1<<22);
-
+                nand_width = au_readl(MEM_STCFG3) & (1 << 22);
 
         /* Set address of hardware control function */
         this->hwcontrol = au1550_hwcontrol;
@@ -454,7 +456,7 @@ int __init au1xxx_nand_init (void)
         this->verify_buf = (!nand_width) ? au_verify_buf16 : au_verify_buf;
 
         /* Scan to find existence of the device */
-        if (nand_scan (au1550_mtd, 1)) {
+        if (nand_scan(au1550_mtd, 1)) {
                 retval = -ENXIO;
                 goto outio;
         }
@@ -465,10 +467,10 @@ int __init au1xxx_nand_init (void)
         return 0;
 
  outio:
-        iounmap ((void *)p_nand);
+        iounmap((void *)p_nand);
 
  outmem:
-        kfree (au1550_mtd);
+        kfree(au1550_mtd);
         return retval;
 }
 
@@ -478,19 +480,20 @@ module_init(au1xxx_nand_init);
  * Clean up routine
  */
 #ifdef MODULE
-static void __exit au1550_cleanup (void)
+static void __exit au1550_cleanup(void)
 {
-        struct nand_chip *this = (struct nand_chip *) &au1550_mtd[1];
+        struct nand_chip *this = (struct nand_chip *)&au1550_mtd[1];
 
         /* Release resources, unregister device */
-        nand_release (au1550_mtd);
+        nand_release(au1550_mtd);
 
         /* Free the MTD device structure */
-        kfree (au1550_mtd);
+        kfree(au1550_mtd);
 
         /* Unmap */
-        iounmap ((void *)p_nand);
+        iounmap((void *)p_nand);
 }
+
 module_exit(au1550_cleanup);
 #endif