summaryrefslogtreecommitdiffstats
path: root/drivers/mtd
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/maps/Kconfig7
-rw-r--r--drivers/mtd/maps/Makefile1
-rw-r--r--drivers/mtd/maps/sbc8240.c250
-rw-r--r--drivers/mtd/mtd_blkdevs.c6
-rw-r--r--drivers/mtd/mtdblock.c16
-rw-r--r--drivers/mtd/mtdcore.c7
-rw-r--r--drivers/mtd/onenand/omap2.c3
7 files changed, 24 insertions, 266 deletions
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 0b98654d8ee..7a58bd5522f 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -284,13 +284,6 @@ config MTD_L440GX
BE VERY CAREFUL.
-config MTD_SBC8240
- tristate "Flash device on SBC8240"
- depends on MTD_JEDECPROBE && 8260
- help
- Flash access on the SBC8240 board from Wind River. See
- <http://www.windriver.com/products/sbc8240/>
-
config MTD_TQM8XXL
tristate "CFI Flash device mapped on TQM8XXL"
depends on MTD_CFI && TQM8xxL
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
index 8bae7f9850c..5beb0662d72 100644
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -50,7 +50,6 @@ obj-$(CONFIG_MTD_UCLINUX) += uclinux.o
obj-$(CONFIG_MTD_NETtel) += nettel.o
obj-$(CONFIG_MTD_SCB2_FLASH) += scb2_flash.o
obj-$(CONFIG_MTD_H720X) += h720x-flash.o
-obj-$(CONFIG_MTD_SBC8240) += sbc8240.o
obj-$(CONFIG_MTD_IXP4XX) += ixp4xx.o
obj-$(CONFIG_MTD_IXP2000) += ixp2000.o
obj-$(CONFIG_MTD_WRSBC8260) += wr_sbc82xx_flash.o
diff --git a/drivers/mtd/maps/sbc8240.c b/drivers/mtd/maps/sbc8240.c
index d5374cdcb16..e69de29bb2d 100644
--- a/drivers/mtd/maps/sbc8240.c
+++ b/drivers/mtd/maps/sbc8240.c
@@ -1,250 +0,0 @@
-/*
- * Handle mapping of the flash memory access routines on the SBC8240 board.
- *
- * Carolyn Smith, Tektronix, Inc.
- *
- * This code is GPLed
- */
-
-/*
- * The SBC8240 has 2 flash banks.
- * Bank 0 is a 512 KiB AMD AM29F040B; 8 x 64 KiB sectors.
- * It contains the U-Boot code (7 sectors) and the environment (1 sector).
- * Bank 1 is 4 x 1 MiB AMD AM29LV800BT; 15 x 64 KiB sectors, 1 x 32 KiB sector,
- * 2 x 8 KiB sectors, 1 x 16 KiB sectors.
- * Both parts are JEDEC compatible.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <asm/io.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/cfi.h>
-
-#ifdef CONFIG_MTD_PARTITIONS
-#include <linux/mtd/partitions.h>
-#endif
-
-#define DEBUG
-
-#ifdef DEBUG
-# define debugk(fmt,args...) printk(fmt ,##args)
-#else
-# define debugk(fmt,args...)
-#endif
-
-
-#define WINDOW_ADDR0 0xFFF00000 /* 512 KiB */
-#define WINDOW_SIZE0 0x00080000
-#define BUSWIDTH0 1
-
-#define WINDOW_ADDR1 0xFF000000 /* 4 MiB */
-#define WINDOW_SIZE1 0x00400000
-#define BUSWIDTH1 8
-
-#define MSG_PREFIX "sbc8240:" /* prefix for our printk()'s */
-#define MTDID "sbc8240-%d" /* for mtdparts= partitioning */
-
-
-static struct map_info sbc8240_map[2] = {
- {
- .name = "sbc8240 Flash Bank #0",
- .size = WINDOW_SIZE0,
- .bankwidth = BUSWIDTH0,
- },
- {
- .name = "sbc8240 Flash Bank #1",
- .size = WINDOW_SIZE1,
- .bankwidth = BUSWIDTH1,
- }
-};
-
-#define NUM_FLASH_BANKS ARRAY_SIZE(sbc8240_map)
-
-/*
- * The following defines the partition layout of SBC8240 boards.
- *
- * See include/linux/mtd/partitions.h for definition of the
- * mtd_partition structure.
- *
- * The *_max_flash_size is the maximum possible mapped flash size
- * which is not necessarily the actual flash size. It must correspond
- * to the value specified in the mapping definition defined by the
- * "struct map_desc *_io_desc" for the corresponding machine.
- */
-
-#ifdef CONFIG_MTD_PARTITIONS
-
-static struct mtd_partition sbc8240_uboot_partitions [] = {
- /* Bank 0 */
- {
- .name = "U-boot", /* U-Boot Firmware */
- .offset = 0,
- .size = 0x00070000, /* 7 x 64 KiB sectors */
- .mask_flags = MTD_WRITEABLE, /* force read-only */
- },
- {
- .name = "environment", /* U-Boot environment */
- .offset = 0x00070000,
- .size = 0x00010000, /* 1 x 64 KiB sector */
- },
-};
-
-static struct mtd_partition sbc8240_fs_partitions [] = {
- {
- .name = "jffs", /* JFFS filesystem */
- .offset = 0,
- .size = 0x003C0000, /* 4 * 15 * 64KiB */
- },
- {
- .name = "tmp32",
- .offset = 0x003C0000,
- .size = 0x00020000, /* 4 * 32KiB */
- },
- {
- .name = "tmp8a",
- .offset = 0x003E0000,
- .size = 0x00008000, /* 4 * 8KiB */
- },
- {
- .name = "tmp8b",
- .offset = 0x003E8000,
- .size = 0x00008000, /* 4 * 8KiB */
- },
- {
- .name = "tmp16",
- .offset = 0x003F0000,
- .size = 0x00010000, /* 4 * 16KiB */
- }
-};
-
-/* trivial struct to describe partition information */
-struct mtd_part_def
-{
- int nums;
- unsigned char *type;
- struct mtd_partition* mtd_part;
-};
-
-static struct mtd_info *sbc8240_mtd[NUM_FLASH_BANKS];
-static struct mtd_part_def sbc8240_part_banks[NUM_FLASH_BANKS];
-
-
-#endif /* CONFIG_MTD_PARTITIONS */
-
-
-static int __init init_sbc8240_mtd (void)
-{
- static struct _cjs {
- u_long addr;
- u_long size;
- } pt[NUM_FLASH_BANKS] = {
- {
- .addr = WINDOW_ADDR0,
- .size = WINDOW_SIZE0
- },
- {
- .addr = WINDOW_ADDR1,
- .size = WINDOW_SIZE1
- },
- };
-
- int devicesfound = 0;
- int i,j;
-
- for (i = 0; i < NUM_FLASH_BANKS; i++) {
- printk (KERN_NOTICE MSG_PREFIX
- "Probing 0x%08lx at 0x%08lx\n", pt[i].size, pt[i].addr);
-
- sbc8240_map[i].map_priv_1 =
- (unsigned long) ioremap (pt[i].addr, pt[i].size);
- if (!sbc8240_map[i].map_priv_1) {
- printk (MSG_PREFIX "failed to ioremap\n");
- for (j = 0; j < i; j++) {
- iounmap((void *) sbc8240_map[j].map_priv_1);
- sbc8240_map[j].map_priv_1 = 0;
- }
- return -EIO;
- }
- simple_map_init(&sbc8240_mtd[i]);
-
- sbc8240_mtd[i] = do_map_probe("jedec_probe", &sbc8240_map[i]);
-
- if (sbc8240_mtd[i]) {
- sbc8240_mtd[i]->module = THIS_MODULE;
- devicesfound++;
- } else {
- if (sbc8240_map[i].map_priv_1) {
- iounmap((void *) sbc8240_map[i].map_priv_1);
- sbc8240_map[i].map_priv_1 = 0;
- }
- }
- }
-
- if (!devicesfound) {
- printk(KERN_NOTICE MSG_PREFIX
- "No suppported flash chips found!\n");
- return -ENXIO;
- }
-
-#ifdef CONFIG_MTD_PARTITIONS
- sbc8240_part_banks[0].mtd_part = sbc8240_uboot_partitions;
- sbc8240_part_banks[0].type = "static image";
- sbc8240_part_banks[0].nums = ARRAY_SIZE(sbc8240_uboot_partitions);
- sbc8240_part_banks[1].mtd_part = sbc8240_fs_partitions;
- sbc8240_part_banks[1].type = "static file system";
- sbc8240_part_banks[1].nums = ARRAY_SIZE(sbc8240_fs_partitions);
-
- for (i = 0; i < NUM_FLASH_BANKS; i++) {
-
- if (!sbc8240_mtd[i]) continue;
- if (sbc8240_part_banks[i].nums == 0) {
- printk (KERN_NOTICE MSG_PREFIX
- "No partition info available, registering whole device\n");
- add_mtd_device(sbc8240_mtd[i]);
- } else {
- printk (KERN_NOTICE MSG_PREFIX
- "Using %s partition definition\n", sbc8240_part_banks[i].mtd_part->name);
- add_mtd_partitions (sbc8240_mtd[i],
- sbc8240_part_banks[i].mtd_part,
- sbc8240_part_banks[i].nums);
- }
- }
-#else
- printk(KERN_NOTICE MSG_PREFIX
- "Registering %d flash banks at once\n", devicesfound);
-
- for (i = 0; i < devicesfound; i++) {
- add_mtd_device(sbc8240_mtd[i]);
- }
-#endif /* CONFIG_MTD_PARTITIONS */
-
- return devicesfound == 0 ? -ENXIO : 0;
-}
-
-static void __exit cleanup_sbc8240_mtd (void)
-{
- int i;
-
- for (i = 0; i < NUM_FLASH_BANKS; i++) {
- if (sbc8240_mtd[i]) {
- del_mtd_device (sbc8240_mtd[i]);
- map_destroy (sbc8240_mtd[i]);
- }
- if (sbc8240_map[i].map_priv_1) {
- iounmap ((void *) sbc8240_map[i].map_priv_1);
- sbc8240_map[i].map_priv_1 = 0;
- }
- }
-}
-
-module_init (init_sbc8240_mtd);
-module_exit (cleanup_sbc8240_mtd);
-
-MODULE_LICENSE ("GPL");
-MODULE_AUTHOR ("Carolyn Smith <carolyn.smith@tektronix.com>");
-MODULE_DESCRIPTION ("MTD map driver for SBC8240 boards");
-
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index c3f62654b6d..7baba40c1ed 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -144,7 +144,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
struct mtd_blktrans_ops *tr = dev->tr;
int ret = -ENODEV;
- if (!try_module_get(dev->mtd->owner))
+ if (!get_mtd_device(NULL, dev->mtd->index))
goto out;
if (!try_module_get(tr->owner))
@@ -158,7 +158,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
ret = 0;
if (tr->open && (ret = tr->open(dev))) {
dev->mtd->usecount--;
- module_put(dev->mtd->owner);
+ put_mtd_device(dev->mtd);
out_tr:
module_put(tr->owner);
}
@@ -177,7 +177,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
if (!ret) {
dev->mtd->usecount--;
- module_put(dev->mtd->owner);
+ put_mtd_device(dev->mtd);
module_put(tr->owner);
}
diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c
index 208c6faa035..77db5ce24d9 100644
--- a/drivers/mtd/mtdblock.c
+++ b/drivers/mtd/mtdblock.c
@@ -29,6 +29,8 @@ static struct mtdblk_dev {
enum { STATE_EMPTY, STATE_CLEAN, STATE_DIRTY } cache_state;
} *mtdblks[MAX_MTD_DEVICES];
+static struct mutex mtdblks_lock;
+
/*
* Cache stuff...
*
@@ -270,15 +272,19 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
DEBUG(MTD_DEBUG_LEVEL1,"mtdblock_open\n");
+ mutex_lock(&mtdblks_lock);
if (mtdblks[dev]) {
mtdblks[dev]->count++;
+ mutex_unlock(&mtdblks_lock);
return 0;
}
/* OK, it's not open. Create cache info for it */
mtdblk = kzalloc(sizeof(struct mtdblk_dev), GFP_KERNEL);
- if (!mtdblk)
+ if (!mtdblk) {
+ mutex_unlock(&mtdblks_lock);
return -ENOMEM;
+ }
mtdblk->count = 1;
mtdblk->mtd = mtd;
@@ -291,6 +297,7 @@ static int mtdblock_open(struct mtd_blktrans_dev *mbd)
}
mtdblks[dev] = mtdblk;
+ mutex_unlock(&mtdblks_lock);
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
@@ -304,6 +311,8 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
DEBUG(MTD_DEBUG_LEVEL1, "mtdblock_release\n");
+ mutex_lock(&mtdblks_lock);
+
mutex_lock(&mtdblk->cache_mutex);
write_cached_data(mtdblk);
mutex_unlock(&mtdblk->cache_mutex);
@@ -316,6 +325,9 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
vfree(mtdblk->cache_data);
kfree(mtdblk);
}
+
+ mutex_unlock(&mtdblks_lock);
+
DEBUG(MTD_DEBUG_LEVEL1, "ok\n");
return 0;
@@ -376,6 +388,8 @@ static struct mtd_blktrans_ops mtdblock_tr = {
static int __init init_mtdblock(void)
{
+ mutex_init(&mtdblks_lock);
+
return register_mtd_blktrans(&mtdblock_tr);
}
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index fac54a3fa3f..00ebf7af746 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -65,8 +65,8 @@ static void mtd_release(struct device *dev)
static int mtd_cls_suspend(struct device *dev, pm_message_t state)
{
struct mtd_info *mtd = dev_to_mtd(dev);
-
- if (mtd->suspend)
+
+ if (mtd && mtd->suspend)
return mtd->suspend(mtd);
else
return 0;
@@ -76,7 +76,7 @@ static int mtd_cls_resume(struct device *dev)
{
struct mtd_info *mtd = dev_to_mtd(dev);
- if (mtd->resume)
+ if (mtd && mtd->resume)
mtd->resume(mtd);
return 0;
}
@@ -298,6 +298,7 @@ int add_mtd_device(struct mtd_info *mtd)
mtd->dev.class = &mtd_class;
mtd->dev.devt = MTD_DEVT(i);
dev_set_name(&mtd->dev, "mtd%d", i);
+ dev_set_drvdata(&mtd->dev, mtd);
if (device_register(&mtd->dev) != 0) {
mtd_table[i] = NULL;
break;
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 38d656b9b2e..0108ed42e87 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -266,7 +266,7 @@ static inline int omap2_onenand_bufferram_offset(struct mtd_info *mtd, int area)
if (ONENAND_CURRENT_BUFFERRAM(this)) {
if (area == ONENAND_DATARAM)
- return mtd->writesize;
+ return this->writesize;
if (area == ONENAND_SPARERAM)
return mtd->oobsize;
}
@@ -770,6 +770,7 @@ static int __devexit omap2_onenand_remove(struct platform_device *pdev)
}
iounmap(c->onenand.base);
release_mem_region(c->phys_base, ONENAND_IO_SIZE);
+ gpmc_cs_free(c->gpmc_cs);
kfree(c);
return 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-27 13:06:12 +0000