[MTD] MAPS: Merge Lubbock and Mainstone drivers into common PXA2xx driver

Replace Lubbock and Mainstone board drivers with common PXA2xx driver,
convert to platform driver (corresponding platform device changes merged
to kernel.org for 2.6.15), add power management callbacks.
Signed-off-by: NTodd Poynor <tpoynor@mvista.com>
Signed-off-by: NNicolas Pitre <npitre@mvista.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

drivers/mtd/maps/Kconfig

@@ -163,20 +163,12 @@ config MTD_SBC_GXX
 	  More info at
 	  <http://www.arcomcontrols.com/products/icp/pc104/processors/SBC_GX1.htm>.
 
-config MTD_LUBBOCK
-	tristate "CFI Flash device mapped on Intel Lubbock XScale eval board"
-	depends on ARCH_LUBBOCK && MTD_CFI_INTELEXT && MTD_PARTITIONS
-	help
-	  This provides a driver for the on-board flash of the Intel
-	  'Lubbock' XScale evaluation board.
-
-config MTD_MAINSTONE
-	tristate "CFI Flash device mapped on Intel Mainstone XScale eval board"
-	depends on MACH_MAINSTONE && MTD_CFI_INTELEXT
+config MTD_PXA2XX
+	tristate "CFI Flash device mapped on Intel XScale PXA2xx based boards"
+	depends on (PXA25x || PXA27x) && MTD_CFI_INTELEXT
 	select MTD_PARTITIONS
 	help
-	  This provides a driver for the on-board flash of the Intel
-	  'Mainstone PXA27x evaluation board.
+	  This provides a driver for the NOR flash attached to a PXA2xx chip.
 
 config MTD_OCTAGON
 	tristate "JEDEC Flash device mapped on Octagon 5066 SBC"

drivers/mtd/maps/Makefile

@@ -20,8 +20,7 @@ obj-$(CONFIG_MTD_ESB2ROM)	+= esb2rom.o
 obj-$(CONFIG_MTD_ICHXROM)	+= ichxrom.o
 obj-$(CONFIG_MTD_CK804XROM)	+= ck804xrom.o
 obj-$(CONFIG_MTD_TSUNAMI)	+= tsunami_flash.o
-obj-$(CONFIG_MTD_LUBBOCK)	+= lubbock-flash.o
-obj-$(CONFIG_MTD_MAINSTONE)	+= mainstone-flash.o
+obj-$(CONFIG_MTD_PXA2XX)	+= pxa2xx-flash.o
 obj-$(CONFIG_MTD_MBX860)	+= mbx860.o
 obj-$(CONFIG_MTD_CEIVA)		+= ceiva.o
 obj-$(CONFIG_MTD_OCTAGON)	+= octagon-5066.o

drivers/mtd/maps/lubbock-flash.c

-/*
- * $Id: lubbock-flash.c,v 1.21 2005/11/07 11:14:27 gleixner Exp $
- *
- * Map driver for the Lubbock developer platform.
- *
- * 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/slab.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/arch/pxa-regs.h>
-#include <asm/arch/lubbock.h>
-
-
-#define ROM_ADDR	0x00000000
-#define FLASH_ADDR	0x04000000
-
-#define WINDOW_SIZE 	64*1024*1024
-
-static void lubbock_map_inval_cache(struct map_info *map, unsigned long from, ssize_t len)
-{
-	consistent_sync((char *)map->cached + from, len, DMA_FROM_DEVICE);
-}
-
-static struct map_info lubbock_maps[2] = { {
-	.size =		WINDOW_SIZE,
-	.phys =		0x00000000,
-	.inval_cache = 	lubbock_map_inval_cache,
-}, {
-	.size =		WINDOW_SIZE,
-	.phys =		0x04000000,
-	.inval_cache = 	lubbock_map_inval_cache,
-} };
-
-static struct mtd_partition lubbock_partitions[] = {
-	{
-		.name =		"Bootloader",
-		.size =		0x00040000,
-		.offset =	0,
-		.mask_flags =	MTD_WRITEABLE  /* force read-only */
-	},{
-		.name =		"Kernel",
-		.size =		0x00100000,
-		.offset =	0x00040000,
-	},{
-		.name =		"Filesystem",
-		.size =		MTDPART_SIZ_FULL,
-		.offset =	0x00140000
-	}
-};
-
-static struct mtd_info *mymtds[2];
-static struct mtd_partition *parsed_parts[2];
-static int nr_parsed_parts[2];
-
-static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
-
-static int __init init_lubbock(void)
-{
-	int flashboot = (LUB_CONF_SWITCHES & 1);
-	int ret = 0, i;
-
-	lubbock_maps[0].bankwidth = lubbock_maps[1].bankwidth =
-		(BOOT_DEF & 1) ? 2 : 4;
-
-	/* Compensate for the nROMBT switch which swaps the flash banks */
-	printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
-	       flashboot?"Flash":"ROM", flashboot);
-
-	lubbock_maps[flashboot^1].name = "Lubbock Application Flash";
-	lubbock_maps[flashboot].name = "Lubbock Boot ROM";
-
-	for (i = 0; i < 2; i++) {
-		lubbock_maps[i].virt = ioremap(lubbock_maps[i].phys, WINDOW_SIZE);
-		if (!lubbock_maps[i].virt) {
-			printk(KERN_WARNING "Failed to ioremap %s\n", lubbock_maps[i].name);
-			if (!ret)
-				ret = -ENOMEM;
-			continue;
-		}
-		lubbock_maps[i].cached = ioremap_cached(lubbock_maps[i].phys, WINDOW_SIZE);
-		if (!lubbock_maps[i].cached)
-			printk(KERN_WARNING "Failed to ioremap cached %s\n", lubbock_maps[i].name);
-		simple_map_init(&lubbock_maps[i]);
-
-		printk(KERN_NOTICE "Probing %s at physical address 0x%08lx (%d-bit bankwidth)\n",
-		       lubbock_maps[i].name, lubbock_maps[i].phys,
-		       lubbock_maps[i].bankwidth * 8);
-
-		mymtds[i] = do_map_probe("cfi_probe", &lubbock_maps[i]);
-
-		if (!mymtds[i]) {
-			iounmap((void *)lubbock_maps[i].virt);
-			if (lubbock_maps[i].cached)
-				iounmap(lubbock_maps[i].cached);
-			if (!ret)
-				ret = -EIO;
-			continue;
-		}
-		mymtds[i]->owner = THIS_MODULE;
-
-		ret = parse_mtd_partitions(mymtds[i], probes,
-					   &parsed_parts[i], 0);
-
-		if (ret > 0)
-			nr_parsed_parts[i] = ret;
-	}
-
-	if (!mymtds[0] && !mymtds[1])
-		return ret;
-
-	for (i = 0; i < 2; i++) {
-		if (!mymtds[i]) {
-			printk(KERN_WARNING "%s is absent. Skipping\n", lubbock_maps[i].name);
-		} else if (nr_parsed_parts[i]) {
-			add_mtd_partitions(mymtds[i], parsed_parts[i], nr_parsed_parts[i]);
-		} else if (!i) {
-			printk("Using static partitions on %s\n", lubbock_maps[i].name);
-			add_mtd_partitions(mymtds[i], lubbock_partitions, ARRAY_SIZE(lubbock_partitions));
-		} else {
-			printk("Registering %s as whole device\n", lubbock_maps[i].name);
-			add_mtd_device(mymtds[i]);
-		}
-	}
-	return 0;
-}
-
-static void __exit cleanup_lubbock(void)
-{
-	int i;
-	for (i = 0; i < 2; i++) {
-		if (!mymtds[i])
-			continue;
-
-		if (nr_parsed_parts[i] || !i)
-			del_mtd_partitions(mymtds[i]);
-		else
-			del_mtd_device(mymtds[i]);
-
-		map_destroy(mymtds[i]);
-		iounmap((void *)lubbock_maps[i].virt);
-		if (lubbock_maps[i].cached)
-			iounmap(lubbock_maps[i].cached);
-
-		kfree(parsed_parts[i]);
-	}
-}
-
-module_init(init_lubbock);
-module_exit(cleanup_lubbock);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
-MODULE_DESCRIPTION("MTD map driver for Intel Lubbock");

drivers/mtd/maps/mainstone-flash.c

-/*
- * $Id:  $
- *
- * Map driver for the Mainstone developer platform.
- *
- * 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/dma-mapping.h>
-#include <linux/slab.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/arch/pxa-regs.h>
-#include <asm/arch/mainstone.h>
-
-
-#define ROM_ADDR	0x00000000
-#define FLASH_ADDR	0x04000000
-
-#define WINDOW_SIZE 	0x04000000
-
-static void mainstone_map_inval_cache(struct map_info *map, unsigned long from,
-				      ssize_t len)
-{
-	consistent_sync((char *)map->cached + from, len, DMA_FROM_DEVICE);
-}
-
-static struct map_info mainstone_maps[2] = { {
-	.size =		WINDOW_SIZE,
-	.phys =		PXA_CS0_PHYS,
-	.inval_cache = 	mainstone_map_inval_cache,
-}, {
-	.size =		WINDOW_SIZE,
-	.phys =		PXA_CS1_PHYS,
-	.inval_cache = 	mainstone_map_inval_cache,
-} };
-
-static struct mtd_partition mainstone_partitions[] = {
-	{
-		.name =		"Bootloader",
-		.size =		0x00040000,
-		.offset =	0,
-		.mask_flags =	MTD_WRITEABLE  /* force read-only */
-	},{
-		.name =		"Kernel",
-		.size =		0x00400000,
-		.offset =	0x00040000,
-	},{
-		.name =		"Filesystem",
-		.size =		MTDPART_SIZ_FULL,
-		.offset =	0x00440000
-	}
-};
-
-static struct mtd_info *mymtds[2];
-static struct mtd_partition *parsed_parts[2];
-static int nr_parsed_parts[2];
-
-static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
-
-static int __init init_mainstone(void)
-{
-	int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
-	int ret = 0, i;
-
-	mainstone_maps[0].bankwidth = (BOOT_DEF & 1) ? 2 : 4;
-	mainstone_maps[1].bankwidth = 4;
-
-	/* Compensate for SW7 which swaps the flash banks */
-	mainstone_maps[SW7].name = "processor flash";
-	mainstone_maps[SW7 ^ 1].name = "main board flash";
-
-	printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
-	       mainstone_maps[0].name);
-
-	for (i = 0; i < 2; i++) {
-		mainstone_maps[i].virt = ioremap(mainstone_maps[i].phys,
-						 WINDOW_SIZE);
-		if (!mainstone_maps[i].virt) {
-			printk(KERN_WARNING "Failed to ioremap %s\n",
-			       mainstone_maps[i].name);
-			if (!ret)
-				ret = -ENOMEM;
-			continue;
-		}
-		mainstone_maps[i].cached =
-			ioremap_cached(mainstone_maps[i].phys, WINDOW_SIZE);
-		if (!mainstone_maps[i].cached)
-			printk(KERN_WARNING "Failed to ioremap cached %s\n",
-			       mainstone_maps[i].name);
-		simple_map_init(&mainstone_maps[i]);
-
-		printk(KERN_NOTICE
-		       "Probing %s at physical address 0x%08lx"
-		       " (%d-bit bankwidth)\n",
-		       mainstone_maps[i].name, mainstone_maps[i].phys,
-		       mainstone_maps[i].bankwidth * 8);
-
-		mymtds[i] = do_map_probe("cfi_probe", &mainstone_maps[i]);
-
-		if (!mymtds[i]) {
-			iounmap((void *)mainstone_maps[i].virt);
-			if (mainstone_maps[i].cached)
-				iounmap(mainstone_maps[i].cached);
-			if (!ret)
-				ret = -EIO;
-			continue;
-		}
-		mymtds[i]->owner = THIS_MODULE;
-
-		ret = parse_mtd_partitions(mymtds[i], probes,
-					   &parsed_parts[i], 0);
-
-		if (ret > 0)
-			nr_parsed_parts[i] = ret;
-	}
-
-	if (!mymtds[0] && !mymtds[1])
-		return ret;
-
-	for (i = 0; i < 2; i++) {
-		if (!mymtds[i]) {
-			printk(KERN_WARNING "%s is absent. Skipping\n",
-			       mainstone_maps[i].name);
-		} else if (nr_parsed_parts[i]) {
-			add_mtd_partitions(mymtds[i], parsed_parts[i],
-					   nr_parsed_parts[i]);
-		} else if (!i) {
-			printk("Using static partitions on %s\n",
-			       mainstone_maps[i].name);
-			add_mtd_partitions(mymtds[i], mainstone_partitions,
-					   ARRAY_SIZE(mainstone_partitions));
-		} else {
-			printk("Registering %s as whole device\n",
-			       mainstone_maps[i].name);
-			add_mtd_device(mymtds[i]);
-		}
-	}
-	return 0;
-}
-
-static void __exit cleanup_mainstone(void)
-{
-	int i;
-	for (i = 0; i < 2; i++) {
-		if (!mymtds[i])
-			continue;
-
-		if (nr_parsed_parts[i] || !i)
-			del_mtd_partitions(mymtds[i]);
-		else
-			del_mtd_device(mymtds[i]);
-
-		map_destroy(mymtds[i]);
-		iounmap((void *)mainstone_maps[i].virt);
-		if (mainstone_maps[i].cached)
-			iounmap(mainstone_maps[i].cached);
-		kfree(parsed_parts[i]);
-	}
-}
-
-module_init(init_mainstone);
-module_exit(cleanup_mainstone);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
-MODULE_DESCRIPTION("MTD map driver for Intel Mainstone");

drivers/mtd/maps/pxa2xx-flash.c

+/*
+ * 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");