1 files changed, 200 insertions, 0 deletions

diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
new file mode 100644
index 000000000000..cb933ac475d5
--- /dev/null
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -0,0 +1,200 @@
+/*
+ * Map driver for Intel XScale PXA2xx platforms.
+ *
+ * Author:      Nicolas Pitre
+ * Copyright:   (C) 2001 MontaVista Software Inc.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+
+#include <asm/mach/flash.h>
+
+static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from,
+                                      ssize_t len)
+{
+        consistent_sync((char *)map->cached + from, len, DMA_FROM_DEVICE);
+}
+
+struct pxa2xx_flash_info {
+        struct mtd_partition    *parts;
+        int                     nr_parts;
+        struct mtd_info         *mtd;
+        struct map_info         map;
+};
+
+
+static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
+
+
+static int __init pxa2xx_flash_probe(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct flash_platform_data *flash = pdev->dev.platform_data;
+        struct pxa2xx_flash_info *info;
+        struct mtd_partition *parts;
+        struct resource *res;
+        int ret = 0;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res)
+                return -ENODEV;
+
+        info = kmalloc(sizeof(struct pxa2xx_flash_info), GFP_KERNEL);
+        if (!info)
+                return -ENOMEM;
+
+        memset(info, 0, sizeof(struct pxa2xx_flash_info));
+        info->map.name = (char *) flash->name;
+        info->map.bankwidth = flash->width;
+        info->map.phys = res->start;
+        info->map.size = res->end - res->start + 1;
+        info->parts = flash->parts;
+        info->nr_parts = flash->nr_parts;
+
+        info->map.virt = ioremap(info->map.phys, info->map.size);
+        if (!info->map.virt) {
+                printk(KERN_WARNING "Failed to ioremap %s\n",
+                       info->map.name);
+                return -ENOMEM;
+        }
+        info->map.cached =
+                ioremap_cached(info->map.phys, info->map.size);
+        if (!info->map.cached)
+                printk(KERN_WARNING "Failed to ioremap cached %s\n",
+                       info->map.name);
+        info->map.inval_cache = pxa2xx_map_inval_cache;
+        simple_map_init(&info->map);
+
+        printk(KERN_NOTICE
+               "Probing %s at physical address 0x%08lx"
+               " (%d-bit bankwidth)\n",
+               info->map.name, (unsigned long)info->map.phys,
+               info->map.bankwidth * 8);
+
+        info->mtd = do_map_probe(flash->map_name, &info->map);
+
+        if (!info->mtd) {
+                iounmap((void *)info->map.virt);
+                if (info->map.cached)
+                        iounmap(info->map.cached);
+                return -EIO;
+        }
+        info->mtd->owner = THIS_MODULE;
+
+#ifdef CONFIG_MTD_PARTITIONS
+        ret = parse_mtd_partitions(info->mtd, probes, &parts, 0);
+
+        if (ret > 0) {
+                info->nr_parts = ret;
+                info->parts = parts;
+        }
+#endif
+
+        if (info->nr_parts) {
+                add_mtd_partitions(info->mtd, info->parts,
+                                   info->nr_parts);
+        } else {
+                printk("Registering %s as whole device\n",
+                       info->map.name);
+                add_mtd_device(info->mtd);
+        }
+
+        dev_set_drvdata(dev, info);
+        return 0;
+}
+
+static int __exit pxa2xx_flash_remove(struct device *dev)
+{
+        struct pxa2xx_flash_info *info = dev_get_drvdata(dev);
+
+        dev_set_drvdata(dev, NULL);
+
+#ifdef CONFIG_MTD_PARTITIONS
+        if (info->nr_parts)
+                del_mtd_partitions(info->mtd);
+        else
+#endif
+                del_mtd_device(info->mtd);
+
+        map_destroy(info->mtd);
+        iounmap(info->map.virt);
+        if (info->map.cached)
+                iounmap(info->map.cached);
+        kfree(info->parts);
+        kfree(info);
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int pxa2xx_flash_suspend(struct device *dev, pm_message_t state)
+{
+        struct pxa2xx_flash_info *info = dev_get_drvdata(dev);
+        int ret = 0;
+
+        if (info->mtd && info->mtd->suspend)
+                ret = info->mtd->suspend(info->mtd);
+        return ret;
+}
+
+static int pxa2xx_flash_resume(struct device *dev)
+{
+        struct pxa2xx_flash_info *info = dev_get_drvdata(dev);
+
+        if (info->mtd && info->mtd->resume)
+                info->mtd->resume(info->mtd);
+        return 0;
+}
+static void pxa2xx_flash_shutdown(struct device *dev)
+{
+        struct pxa2xx_flash_info *info = dev_get_drvdata(dev);
+
+        if (info && info->mtd->suspend(info->mtd) == 0)
+                info->mtd->resume(info->mtd);
+}
+#else
+#define pxa2xx_flash_suspend NULL
+#define pxa2xx_flash_resume NULL
+#define pxa2xx_flash_shutdown NULL
+#endif
+
+static struct device_driver pxa2xx_flash_driver = {
+        .name           = "pxa2xx-flash",
+        .bus            = &platform_bus_type,
+        .probe          = pxa2xx_flash_probe,
+        .remove         = __exit_p(pxa2xx_flash_remove),
+        .suspend        = pxa2xx_flash_suspend,
+        .resume         = pxa2xx_flash_resume,
+        .shutdown       = pxa2xx_flash_shutdown,
+};
+
+static int __init init_pxa2xx_flash(void)
+{
+        return driver_register(&pxa2xx_flash_driver);
+}
+
+static void __exit cleanup_pxa2xx_flash(void)
+{
+        driver_unregister(&pxa2xx_flash_driver);
+}
+
+module_init(init_pxa2xx_flash);
+module_exit(cleanup_pxa2xx_flash);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
+MODULE_DESCRIPTION("MTD map driver for Intel XScale PXA2xx");