zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/mtd/nand/autcpu12.c b/ap/os/linux/linux-3.4.x/drivers/mtd/nand/autcpu12.c
new file mode 100644
index 0000000..2e42ec2
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/mtd/nand/autcpu12.c
@@ -0,0 +1,239 @@
+/*
+ * drivers/mtd/autcpu12.c
+ *
+ * Copyright (c) 2002 Thomas Gleixner <tgxl@linutronix.de>
+ *
+ * Derived from drivers/mtd/spia.c
+ * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
+ *
+ * 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
+ * published by the Free Software Foundation.
+ *
+ * Overview:
+ * This is a device driver for the NAND flash device found on the
+ * autronix autcpu12 board, which is a SmartMediaCard. It supports
+ * 16MiB, 32MiB and 64MiB cards.
+ *
+ *
+ * 02-12-2002 TG Cleanup of module params
+ *
+ * 02-20-2002 TG adjusted for different rd/wr address support
+ * added support for read device ready/busy line
+ * added page_cache
+ *
+ * 10-06-2002 TG 128K card support added
+ */
+
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <asm/io.h>
+#include <mach/hardware.h>
+#include <asm/sizes.h>
+#include <mach/autcpu12.h>
+
+/*
+ * MTD structure for AUTCPU12 board
+ */
+static struct mtd_info *autcpu12_mtd = NULL;
+static void __iomem *autcpu12_fio_base;
+
+/*
+ * Define partitions for flash devices
+ */
+static struct mtd_partition partition_info16k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 8 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 8 * SZ_1M,
+ .size = 8 * SZ_1M },
+};
+
+static struct mtd_partition partition_info32k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 8 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 8 * SZ_1M,
+ .size = 24 * SZ_1M },
+};
+
+static struct mtd_partition partition_info64k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 16 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 16 * SZ_1M,
+ .size = 48 * SZ_1M },
+};
+
+static struct mtd_partition partition_info128k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 16 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 16 * SZ_1M,
+ .size = 112 * SZ_1M },
+};
+
+#define NUM_PARTITIONS16K 2
+#define NUM_PARTITIONS32K 2
+#define NUM_PARTITIONS64K 2
+#define NUM_PARTITIONS128K 2
+/*
+ * hardware specific access to control-lines
+ *
+ * ALE bit 4 autcpu12_pedr
+ * CLE bit 5 autcpu12_pedr
+ * NCE bit 0 fio_ctrl
+ *
+ */
+static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
+{
+ struct nand_chip *chip = mtd->priv;
+
+ if (ctrl & NAND_CTRL_CHANGE) {
+ void __iomem *addr;
+ unsigned char bits;
+
+ addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET;
+ bits = (ctrl & NAND_CLE) << 4;
+ bits |= (ctrl & NAND_ALE) << 2;
+ writeb((readb(addr) & ~0x30) | bits, addr);
+
+ addr = autcpu12_fio_base + AUTCPU12_SMC_SELECT_OFFSET;
+ writeb((readb(addr) & ~0x1) | (ctrl & NAND_NCE), addr);
+ }
+
+ if (cmd != NAND_CMD_NONE)
+ writeb(cmd, chip->IO_ADDR_W);
+}
+
+/*
+ * read device ready pin
+ */
+int autcpu12_device_ready(struct mtd_info *mtd)
+{
+ void __iomem *addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET;
+
+ return readb(addr) & AUTCPU12_SMC_RDY;
+}
+
+/*
+ * Main initialization routine
+ */
+static int __init autcpu12_init(void)
+{
+ struct nand_chip *this;
+ int err = 0;
+
+ /* Allocate memory for MTD device structure and private data */
+ autcpu12_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip),
+ GFP_KERNEL);
+ if (!autcpu12_mtd) {
+ printk("Unable to allocate AUTCPU12 NAND MTD device structure.\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* map physical address */
+ autcpu12_fio_base = ioremap(AUTCPU12_PHYS_SMC, SZ_1K);
+ if (!autcpu12_fio_base) {
+ printk("Ioremap autcpu12 SmartMedia Card failed\n");
+ err = -EIO;
+ goto out_mtd;
+ }
+
+ /* Get pointer to private data */
+ this = (struct nand_chip *)(&autcpu12_mtd[1]);
+
+ /* Initialize structures */
+ memset(autcpu12_mtd, 0, sizeof(struct mtd_info));
+ memset(this, 0, sizeof(struct nand_chip));
+
+ /* Link the private data with the MTD structure */
+ autcpu12_mtd->priv = this;
+ autcpu12_mtd->owner = THIS_MODULE;
+
+ /* Set address of NAND IO lines */
+ this->IO_ADDR_R = autcpu12_fio_base;
+ this->IO_ADDR_W = autcpu12_fio_base;
+ this->cmd_ctrl = autcpu12_hwcontrol;
+ this->dev_ready = autcpu12_device_ready;
+ /* 20 us command delay time */
+ this->chip_delay = 20;
+ this->ecc.mode = NAND_ECC_SOFT;
+
+ /* Enable the following for a flash based bad block table */
+ /*
+ this->bbt_options = NAND_BBT_USE_FLASH;
+ */
+ this->bbt_options = NAND_BBT_USE_FLASH;
+
+ /* Scan to find existence of the device */
+ if (nand_scan(autcpu12_mtd, 1)) {
+ err = -ENXIO;
+ goto out_ior;
+ }
+
+ /* Register the partitions */
+ switch (autcpu12_mtd->size) {
+ case SZ_16M:
+ mtd_device_register(autcpu12_mtd, partition_info16k,
+ NUM_PARTITIONS16K);
+ break;
+ case SZ_32M:
+ mtd_device_register(autcpu12_mtd, partition_info32k,
+ NUM_PARTITIONS32K);
+ break;
+ case SZ_64M:
+ mtd_device_register(autcpu12_mtd, partition_info64k,
+ NUM_PARTITIONS64K);
+ break;
+ case SZ_128M:
+ mtd_device_register(autcpu12_mtd, partition_info128k,
+ NUM_PARTITIONS128K);
+ break;
+ default:
+ printk("Unsupported SmartMedia device\n");
+ err = -ENXIO;
+ goto out_ior;
+ }
+ goto out;
+
+ out_ior:
+ iounmap(autcpu12_fio_base);
+ out_mtd:
+ kfree(autcpu12_mtd);
+ out:
+ return err;
+}
+
+module_init(autcpu12_init);
+
+/*
+ * Clean up routine
+ */
+static void __exit autcpu12_cleanup(void)
+{
+ /* Release resources, unregister device */
+ nand_release(autcpu12_mtd);
+
+ /* unmap physical address */
+ iounmap(autcpu12_fio_base);
+
+ /* Free the MTD device structure */
+ kfree(autcpu12_mtd);
+}
+
+module_exit(autcpu12_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
+MODULE_DESCRIPTION("Glue layer for SmartMediaCard on autronix autcpu12");