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[linux-2.6.git] / drivers / mtd / nand / ppchameleonevb.c

diff --git a/drivers/mtd/nand/ppchameleonevb.c b/drivers/mtd/nand/ppchameleonevb.c
index e510a83..9c356a0 100644 (file)
--- a/drivers/mtd/nand/ppchameleonevb.c
+++ b/drivers/mtd/nand/ppchameleonevb.c
@@ -6,7 +6,7 @@
  *  Derived from drivers/mtd/nand/edb7312.c
  *
  *
- * $Id: ppchameleonevb.c,v 1.6 2004/11/05 16:07:16 kalev Exp $
+ * $Id: ppchameleonevb.c,v 1.2 2004/05/05 22:09:54 gleixner Exp $
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -64,17 +64,22 @@ static struct mtd_info *ppchameleonevb_mtd = NULL;
 /*
  * Module stuff
  */
-static unsigned long ppchameleon_fio_pbase     = CFG_NAND0_PADDR;
-static unsigned long ppchameleonevb_fio_pbase = CFG_NAND1_PADDR;
+static int ppchameleon_fio_pbase       = CFG_NAND0_PADDR;
+static int ppchameleonevb_fio_pbase = CFG_NAND1_PADDR;
 
 #ifdef MODULE
-module_param(ppchameleon_fio_pbase, ulong, 0);
-module_param(ppchameleonevb_fio_pbase, ulong, 0);
-#else
+MODULE_PARM(ppchameleon_fio_pbase, "i");
 __setup("ppchameleon_fio_pbase=",ppchameleon_fio_pbase);
+MODULE_PARM(ppchameleonevb_fio_pbase, "i");
 __setup("ppchameleonevb_fio_pbase=",ppchameleonevb_fio_pbase);
 #endif
 
+/* Internal buffers. Page buffer and oob buffer for one block */
+static u_char data_buf[2048 + 64];
+static u_char oob_buf[64 * 64];
+static u_char data_buf_evb[512 + 16];
+static u_char oob_buf_evb[16 * 32];
+
 #ifdef CONFIG_MTD_PARTITIONS
 /*
  * Define static partitions for flash devices
@@ -191,8 +196,8 @@ static int __init ppchameleonevb_init (void)
        const char *part_type = 0;
        int mtd_parts_nb = 0;
        struct mtd_partition *mtd_parts = 0;
-       void __iomem *ppchameleon_fio_base;
-       void __iomem *ppchameleonevb_fio_base;
+       int ppchameleon_fio_base;
+       int ppchameleonevb_fio_base;
 
 
        /*********************************
@@ -200,14 +205,15 @@ static int __init ppchameleonevb_init (void)
        *********************************/
        /* Allocate memory for MTD device structure and private data */
        ppchameleon_mtd = kmalloc(sizeof(struct mtd_info) +
-                                                     sizeof(struct nand_chip), GFP_KERNEL);
+                            sizeof(struct nand_chip),
+                            GFP_KERNEL);
        if (!ppchameleon_mtd) {
                printk("Unable to allocate PPChameleon NAND MTD device structure.\n");
                return -ENOMEM;
        }
 
        /* map physical address */
-       ppchameleon_fio_base = ioremap(ppchameleon_fio_pbase, SZ_4M);
+       ppchameleon_fio_base = (unsigned long)ioremap(ppchameleon_fio_pbase, SZ_4M);
        if(!ppchameleon_fio_base) {
                printk("ioremap PPChameleon NAND flash failed\n");
                kfree(ppchameleon_mtd);
@@ -258,6 +264,10 @@ static int __init ppchameleonevb_init (void)
        /* ECC mode */
        this->eccmode = NAND_ECC_SOFT;
 
+       /* Set internal data buffer */
+       this->data_buf = data_buf;
+       this->oob_buf = oob_buf;
+
        /* Scan to find existence of the device (it could not be mounted) */
        if (nand_scan (ppchameleon_mtd, 1)) {
                iounmap((void *)ppchameleon_fio_base);
@@ -299,14 +309,15 @@ nand_evb_init:
        ****************************/
        /* Allocate memory for MTD device structure and private data */
        ppchameleonevb_mtd = kmalloc(sizeof(struct mtd_info) +
-                                                        sizeof(struct nand_chip), GFP_KERNEL);
+                            sizeof(struct nand_chip),
+                            GFP_KERNEL);
        if (!ppchameleonevb_mtd) {
                printk("Unable to allocate PPChameleonEVB NAND MTD device structure.\n");
                return -ENOMEM;
        }
 
        /* map physical address */
-       ppchameleonevb_fio_base = ioremap(ppchameleonevb_fio_pbase, SZ_4M);
+       ppchameleonevb_fio_base = (unsigned long)ioremap(ppchameleonevb_fio_pbase, SZ_4M);
        if(!ppchameleonevb_fio_base) {
                printk("ioremap PPChameleonEVB NAND flash failed\n");
                kfree(ppchameleonevb_mtd);
@@ -338,8 +349,7 @@ nand_evb_init:
        out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xFFFFFFF0);
        out_be32((volatile unsigned*)GPIO0_TSRL, in_be32((volatile unsigned*)GPIO0_TSRL) & 0x3FFFFFFF);
        /* enable output driver */
-       out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN | 
-                NAND_EVB_CLE_GPIO_PIN | NAND_EVB_ALE_GPIO_PIN);
+       out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN | NAND_EVB_CLE_GPIO_PIN | NAND_EVB_ALE_GPIO_PIN);
 #ifdef USE_READY_BUSY_PIN
        /* three-state select */
        out_be32((volatile unsigned*)GPIO0_TSRL, in_be32((volatile unsigned*)GPIO0_TSRL) & 0xFFFFFFFC);
@@ -349,6 +359,7 @@ nand_evb_init:
        out_be32((volatile unsigned*)GPIO0_ISR1L, (in_be32((volatile unsigned*)GPIO0_ISR1L) & 0xFFFFFFFC) | 0x00000001);
 #endif
 
+
        /* insert callbacks */
        this->IO_ADDR_R = ppchameleonevb_fio_base;
        this->IO_ADDR_W = ppchameleonevb_fio_base;
@@ -361,6 +372,10 @@ nand_evb_init:
        /* ECC mode */
        this->eccmode = NAND_ECC_SOFT;
 
+       /* Set internal data buffer */
+       this->data_buf = data_buf_evb;
+       this->oob_buf = oob_buf_evb;
+
        /* Scan to find existence of the device */
        if (nand_scan (ppchameleonevb_mtd, 1)) {
                iounmap((void *)ppchameleonevb_fio_base);
@@ -397,20 +412,15 @@ module_init(ppchameleonevb_init);
  */
 static void __exit ppchameleonevb_cleanup (void)
 {
-       struct nand_chip *this;
+       struct nand_chip *this = (struct nand_chip *) &ppchameleonevb_mtd[1];
+
+       /* Unregister the device */
+       del_mtd_device (ppchameleonevb_mtd);
 
-       /* Release resources, unregister device(s) */
-       nand_release (ppchameleon_mtd);
-       nand_release (ppchameleonevb_mtd);
-       
-       /* Release iomaps */
-       this = (struct nand_chip *) &ppchameleon_mtd[1];
-       iounmap((void *) this->IO_ADDR_R;
-       this = (struct nand_chip *) &ppchameleonevb_mtd[1];
-       iounmap((void *) this->IO_ADDR_R;
+       /* Free internal data buffer */
+       kfree (this->data_buf);
 
        /* Free the MTD device structure */
-       kfree (ppchameleon_mtd);
        kfree (ppchameleonevb_mtd);
 }
 module_exit(ppchameleonevb_cleanup);