1 files changed, 95 insertions, 134 deletions

diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index bc4649a17b9..f73cd461257 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -1,6 +1,4 @@
 /*
- * $Id: physmap.c,v 1.39 2005/11/29 14:49:36 gleixner Exp $
- *
  * Normal mappings of chips in physical memory
  *
  * Copyright (C) 2003 MontaVista Software Inc.
@@ -21,7 +19,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/concat.h>
-#include <asm/io.h>
+#include <linux/io.h>
 
 #define MAX_RESOURCES		4
 
@@ -29,11 +27,8 @@ struct physmap_flash_info {
 	struct mtd_info		*mtd[MAX_RESOURCES];
 	struct mtd_info		*cmtd;
 	struct map_info		map[MAX_RESOURCES];
-	struct resource		*res;
-#ifdef CONFIG_MTD_PARTITIONS
-	int			nr_parts;
-	struct mtd_partition	*parts;
-#endif
+	spinlock_t		vpp_lock;
+	int			vpp_refcnt;
 };
 
 static int physmap_flash_remove(struct platform_device *dev)
@@ -45,104 +40,126 @@ static int physmap_flash_remove(struct platform_device *dev)
 	info = platform_get_drvdata(dev);
 	if (info == NULL)
 		return 0;
-	platform_set_drvdata(dev, NULL);
 
-	physmap_data = dev->dev.platform_data;
+	physmap_data = dev_get_platdata(&dev->dev);
 
-#ifdef CONFIG_MTD_CONCAT
-	if (info->cmtd != info->mtd[0]) {
-		del_mtd_device(info->cmtd);
-		mtd_concat_destroy(info->cmtd);
+	if (info->cmtd) {
+		mtd_device_unregister(info->cmtd);
+		if (info->cmtd != info->mtd[0])
+			mtd_concat_destroy(info->cmtd);
 	}
-#endif
 
 	for (i = 0; i < MAX_RESOURCES; i++) {
-		if (info->mtd[i] != NULL) {
-#ifdef CONFIG_MTD_PARTITIONS
-			if (info->nr_parts) {
-				del_mtd_partitions(info->mtd[i]);
-				kfree(info->parts);
-			} else if (physmap_data->nr_parts) {
-				del_mtd_partitions(info->mtd[i]);
-			} else {
-				del_mtd_device(info->mtd[i]);
-			}
-#else
-			del_mtd_device(info->mtd[i]);
-#endif
+		if (info->mtd[i] != NULL)
 			map_destroy(info->mtd[i]);
-		}
-
-		if (info->map[i].virt != NULL)
-			iounmap(info->map[i].virt);
 	}
 
-	if (info->res != NULL) {
-		release_resource(info->res);
-		kfree(info->res);
-	}
+	if (physmap_data->exit)
+		physmap_data->exit(dev);
 
 	return 0;
 }
 
-static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };
-#ifdef CONFIG_MTD_PARTITIONS
-static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL };
-#endif
+static void physmap_set_vpp(struct map_info *map, int state)
+{
+	struct platform_device *pdev;
+	struct physmap_flash_data *physmap_data;
+	struct physmap_flash_info *info;
+	unsigned long flags;
+
+	pdev = (struct platform_device *)map->map_priv_1;
+	physmap_data = dev_get_platdata(&pdev->dev);
+
+	if (!physmap_data->set_vpp)
+		return;
+
+	info = platform_get_drvdata(pdev);
+
+	spin_lock_irqsave(&info->vpp_lock, flags);
+	if (state) {
+		if (++info->vpp_refcnt == 1)    /* first nested 'on' */
+			physmap_data->set_vpp(pdev, 1);
+	} else {
+		if (--info->vpp_refcnt == 0)    /* last nested 'off' */
+			physmap_data->set_vpp(pdev, 0);
+	}
+	spin_unlock_irqrestore(&info->vpp_lock, flags);
+}
+
+static const char * const rom_probe_types[] = {
+	"cfi_probe", "jedec_probe", "qinfo_probe", "map_rom", NULL };
+
+static const char * const part_probe_types[] = {
+	"cmdlinepart", "RedBoot", "afs", NULL };
 
 static int physmap_flash_probe(struct platform_device *dev)
 {
 	struct physmap_flash_data *physmap_data;
 	struct physmap_flash_info *info;
-	const char **probe_type;
+	const char * const *probe_type;
+	const char * const *part_types;
 	int err = 0;
 	int i;
 	int devices_found = 0;
 
-	physmap_data = dev->dev.platform_data;
+	physmap_data = dev_get_platdata(&dev->dev);
 	if (physmap_data == NULL)
 		return -ENODEV;
 
-	info = kzalloc(sizeof(struct physmap_flash_info), GFP_KERNEL);
+	info = devm_kzalloc(&dev->dev, sizeof(struct physmap_flash_info),
+			    GFP_KERNEL);
 	if (info == NULL) {
 		err = -ENOMEM;
 		goto err_out;
 	}
 
+	if (physmap_data->init) {
+		err = physmap_data->init(dev);
+		if (err)
+			goto err_out;
+	}
+
 	platform_set_drvdata(dev, info);
 
 	for (i = 0; i < dev->num_resources; i++) {
 		printk(KERN_NOTICE "physmap platform flash device: %.8llx at %.8llx\n",
-		       (unsigned long long)(dev->resource[i].end - dev->resource[i].start + 1),
+		       (unsigned long long)resource_size(&dev->resource[i]),
 		       (unsigned long long)dev->resource[i].start);
 
-		info->res = request_mem_region(dev->resource[i].start,
-					       dev->resource[i].end - dev->resource[i].start + 1,
-					       dev->dev.bus_id);
-		if (info->res == NULL) {
+		if (!devm_request_mem_region(&dev->dev,
+			dev->resource[i].start,
+			resource_size(&dev->resource[i]),
+			dev_name(&dev->dev))) {
 			dev_err(&dev->dev, "Could not reserve memory region\n");
 			err = -ENOMEM;
 			goto err_out;
 		}
 
-		info->map[i].name = dev->dev.bus_id;
+		info->map[i].name = dev_name(&dev->dev);
 		info->map[i].phys = dev->resource[i].start;
-		info->map[i].size = dev->resource[i].end - dev->resource[i].start + 1;
+		info->map[i].size = resource_size(&dev->resource[i]);
 		info->map[i].bankwidth = physmap_data->width;
-		info->map[i].set_vpp = physmap_data->set_vpp;
+		info->map[i].set_vpp = physmap_set_vpp;
+		info->map[i].pfow_base = physmap_data->pfow_base;
+		info->map[i].map_priv_1 = (unsigned long)dev;
 
-		info->map[i].virt = ioremap(info->map[i].phys, info->map[i].size);
+		info->map[i].virt = devm_ioremap(&dev->dev, info->map[i].phys,
+						 info->map[i].size);
 		if (info->map[i].virt == NULL) {
 			dev_err(&dev->dev, "Failed to ioremap flash region\n");
-			err = EIO;
+			err = -EIO;
 			goto err_out;
 		}
 
 		simple_map_init(&info->map[i]);
 
 		probe_type = rom_probe_types;
-		for (; info->mtd[i] == NULL && *probe_type != NULL; probe_type++)
-			info->mtd[i] = do_map_probe(*probe_type, &info->map[i]);
+		if (physmap_data->probe_type == NULL) {
+			for (; info->mtd[i] == NULL && *probe_type != NULL; probe_type++)
+				info->mtd[i] = do_map_probe(*probe_type, &info->map[i]);
+		} else
+			info->mtd[i] = do_map_probe(physmap_data->probe_type, &info->map[i]);
+
 		if (info->mtd[i] == NULL) {
 			dev_err(&dev->dev, "map_probe failed\n");
 			err = -ENXIO;
@@ -151,6 +168,7 @@ static int physmap_flash_probe(struct platform_device *dev)
 			devices_found++;
 		}
 		info->mtd[i]->owner = THIS_MODULE;
+		info->mtd[i]->dev.parent = &dev->dev;
 	}
 
 	if (devices_found == 1) {
@@ -159,35 +177,19 @@ static int physmap_flash_probe(struct platform_device *dev)
 		/*
 		 * We detected multiple devices. Concatenate them together.
 		 */
-#ifdef CONFIG_MTD_CONCAT
-		info->cmtd = mtd_concat_create(info->mtd, devices_found, dev->dev.bus_id);
+		info->cmtd = mtd_concat_create(info->mtd, devices_found, dev_name(&dev->dev));
 		if (info->cmtd == NULL)
 			err = -ENXIO;
-#else
-		printk(KERN_ERR "physmap-flash: multiple devices "
-		       "found but MTD concat support disabled.\n");
-		err = -ENXIO;
-#endif
 	}
 	if (err)
 		goto err_out;
 
-#ifdef CONFIG_MTD_PARTITIONS
-	err = parse_mtd_partitions(info->cmtd, part_probe_types, &info->parts, 0);
-	if (err > 0) {
-		add_mtd_partitions(info->cmtd, info->parts, err);
-		return 0;
-	}
+	spin_lock_init(&info->vpp_lock);
 
-	if (physmap_data->nr_parts) {
-		printk(KERN_NOTICE "Using physmap partition information\n");
-		add_mtd_partitions(info->cmtd, physmap_data->parts,
-				   physmap_data->nr_parts);
-		return 0;
-	}
-#endif
+	part_types = physmap_data->part_probe_types ? : part_probe_types;
 
-	add_mtd_device(info->cmtd);
+	mtd_device_parse_register(info->cmtd, part_types, NULL,
+				  physmap_data->parts, physmap_data->nr_parts);
 	return 0;
 
 err_out:
@@ -196,64 +198,31 @@ err_out:
 }
 
 #ifdef CONFIG_PM
-static int physmap_flash_suspend(struct platform_device *dev, pm_message_t state)
-{
-	struct physmap_flash_info *info = platform_get_drvdata(dev);
-	int ret = 0;
-	int i;
-
-	for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++)
-		ret |= info->mtd[i]->suspend(info->mtd[i]);
-
-	return ret;
-}
-
-static int physmap_flash_resume(struct platform_device *dev)
-{
-	struct physmap_flash_info *info = platform_get_drvdata(dev);
-	int i;
-
-	for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++)
-		info->mtd[i]->resume(info->mtd[i]);
-
-	return 0;
-}
-
 static void physmap_flash_shutdown(struct platform_device *dev)
 {
 	struct physmap_flash_info *info = platform_get_drvdata(dev);
 	int i;
 
 	for (i = 0; i < MAX_RESOURCES && info->mtd[i]; i++)
-		if (info->mtd[i]->suspend(info->mtd[i]) == 0)
-			info->mtd[i]->resume(info->mtd[i]);
+		if (mtd_suspend(info->mtd[i]) == 0)
+			mtd_resume(info->mtd[i]);
 }
 #else
-#define physmap_flash_suspend NULL
-#define physmap_flash_resume NULL
 #define physmap_flash_shutdown NULL
 #endif
 
 static struct platform_driver physmap_flash_driver = {
 	.probe		= physmap_flash_probe,
 	.remove		= physmap_flash_remove,
-	.suspend	= physmap_flash_suspend,
-	.resume		= physmap_flash_resume,
 	.shutdown	= physmap_flash_shutdown,
 	.driver		= {
 		.name	= "physmap-flash",
+		.owner	= THIS_MODULE,
 	},
 };
 
 
-#ifdef CONFIG_MTD_PHYSMAP_LEN
-#if CONFIG_MTD_PHYSMAP_LEN != 0
-#warning using PHYSMAP compat code
-#define PHYSMAP_COMPAT
-#endif
-#endif
-
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
 static struct physmap_flash_data physmap_flash_data = {
 	.width		= CONFIG_MTD_PHYSMAP_BANKWIDTH,
 };
@@ -273,23 +242,6 @@ static struct platform_device physmap_flash = {
 	.num_resources	= 1,
 	.resource	= &physmap_flash_resource,
 };
-
-void physmap_configure(unsigned long addr, unsigned long size,
-		int bankwidth, void (*set_vpp)(struct map_info *, int))
-{
-	physmap_flash_resource.start = addr;
-	physmap_flash_resource.end = addr + size - 1;
-	physmap_flash_data.width = bankwidth;
-	physmap_flash_data.set_vpp = set_vpp;
-}
-
-#ifdef CONFIG_MTD_PARTITIONS
-void physmap_set_partitions(struct mtd_partition *parts, int num_parts)
-{
-	physmap_flash_data.nr_parts = num_parts;
-	physmap_flash_data.parts = parts;
-}
-#endif
 #endif
 
 static int __init physmap_init(void)
@@ -297,9 +249,12 @@ static int __init physmap_init(void)
 	int err;
 
 	err = platform_driver_register(&physmap_flash_driver);
-#ifdef PHYSMAP_COMPAT
-	if (err == 0)
-		platform_device_register(&physmap_flash);
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
+	if (err == 0) {
+		err = platform_device_register(&physmap_flash);
+		if (err)
+			platform_driver_unregister(&physmap_flash_driver);
+	}
 #endif
 
 	return err;
@@ -307,7 +262,7 @@ static int __init physmap_init(void)
 
 static void __exit physmap_exit(void)
 {
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
 	platform_device_unregister(&physmap_flash);
 #endif
 	platform_driver_unregister(&physmap_flash_driver);
@@ -319,3 +274,9 @@ module_exit(physmap_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
 MODULE_DESCRIPTION("Generic configurable MTD map driver");
+
+/* legacy platform drivers can't hotplug or coldplg */
+#ifndef CONFIG_MTD_PHYSMAP_COMPAT
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:physmap-flash");
+#endif