zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/mtd/nand/h1910.c b/ap/os/linux/linux-3.4.x/drivers/mtd/nand/h1910.c
new file mode 100644
index 0000000..11e4878
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/mtd/nand/h1910.c
@@ -0,0 +1,168 @@
+/*
+ * drivers/mtd/nand/h1910.c
+ *
+ * Copyright (C) 2003 Joshua Wise (joshua@joshuawise.com)
+ *
+ * Derived from drivers/mtd/nand/edb7312.c
+ * Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
+ * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
+ *
+ * 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
+ * iPAQ h1910 board which utilizes the Samsung K9F2808 part. This is
+ * a 128Mibit (16MiB x 8 bits) NAND flash device.
+ */
+
+#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> /* for CLPS7111_VIRT_BASE */
+#include <asm/sizes.h>
+#include <mach/h1900-gpio.h>
+#include <mach/ipaq.h>
+
+/*
+ * MTD structure for EDB7312 board
+ */
+static struct mtd_info *h1910_nand_mtd = NULL;
+
+/*
+ * Module stuff
+ */
+
+/*
+ * Define static partitions for flash device
+ */
+static struct mtd_partition partition_info[] = {
+ {name:"h1910 NAND Flash",
+ offset:0,
+ size:16 * 1024 * 1024}
+};
+
+#define NUM_PARTITIONS 1
+
+/*
+ * hardware specific access to control-lines
+ *
+ * NAND_NCE: bit 0 - don't care
+ * NAND_CLE: bit 1 - address bit 2
+ * NAND_ALE: bit 2 - address bit 3
+ */
+static void h1910_hwcontrol(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
+{
+ struct nand_chip *chip = mtd->priv;
+
+ if (cmd != NAND_CMD_NONE)
+ writeb(cmd, chip->IO_ADDR_W | ((ctrl & 0x6) << 1));
+}
+
+/*
+ * read device ready pin
+ */
+#if 0
+static int h1910_device_ready(struct mtd_info *mtd)
+{
+ return (GPLR(55) & GPIO_bit(55));
+}
+#endif
+
+/*
+ * Main initialization routine
+ */
+static int __init h1910_init(void)
+{
+ struct nand_chip *this;
+ void __iomem *nandaddr;
+
+ if (!machine_is_h1900())
+ return -ENODEV;
+
+ nandaddr = ioremap(0x08000000, 0x1000);
+ if (!nandaddr) {
+ printk("Failed to ioremap nand flash.\n");
+ return -ENOMEM;
+ }
+
+ /* Allocate memory for MTD device structure and private data */
+ h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
+ if (!h1910_nand_mtd) {
+ printk("Unable to allocate h1910 NAND MTD device structure.\n");
+ iounmap((void *)nandaddr);
+ return -ENOMEM;
+ }
+
+ /* Get pointer to private data */
+ this = (struct nand_chip *)(&h1910_nand_mtd[1]);
+
+ /* Initialize structures */
+ memset(h1910_nand_mtd, 0, sizeof(struct mtd_info));
+ memset(this, 0, sizeof(struct nand_chip));
+
+ /* Link the private data with the MTD structure */
+ h1910_nand_mtd->priv = this;
+ h1910_nand_mtd->owner = THIS_MODULE;
+
+ /*
+ * Enable VPEN
+ */
+ GPSR(37) = GPIO_bit(37);
+
+ /* insert callbacks */
+ this->IO_ADDR_R = nandaddr;
+ this->IO_ADDR_W = nandaddr;
+ this->cmd_ctrl = h1910_hwcontrol;
+ this->dev_ready = NULL; /* unknown whether that was correct or not so we will just do it like this */
+ /* 15 us command delay time */
+ this->chip_delay = 50;
+ this->ecc.mode = NAND_ECC_SOFT;
+ this->options = NAND_NO_AUTOINCR;
+
+ /* Scan to find existence of the device */
+ if (nand_scan(h1910_nand_mtd, 1)) {
+ printk(KERN_NOTICE "No NAND device - returning -ENXIO\n");
+ kfree(h1910_nand_mtd);
+ iounmap((void *)nandaddr);
+ return -ENXIO;
+ }
+
+ /* Register the partitions */
+ mtd_device_parse_register(h1910_nand_mtd, NULL, NULL, partition_info,
+ NUM_PARTITIONS);
+
+ /* Return happy */
+ return 0;
+}
+
+module_init(h1910_init);
+
+/*
+ * Clean up routine
+ */
+static void __exit h1910_cleanup(void)
+{
+ struct nand_chip *this = (struct nand_chip *)&h1910_nand_mtd[1];
+
+ /* Release resources, unregister device */
+ nand_release(h1910_nand_mtd);
+
+ /* Release io resource */
+ iounmap((void *)this->IO_ADDR_W);
+
+ /* Free the MTD device structure */
+ kfree(h1910_nand_mtd);
+}
+
+module_exit(h1910_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Joshua Wise <joshua at joshuawise dot com>");
+MODULE_DESCRIPTION("NAND flash driver for iPAQ h1910");