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path: root/drivers/mtd/maps/sa1100-flash.c
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Diffstat (limited to 'drivers/mtd/maps/sa1100-flash.c')
-rw-r--r--drivers/mtd/maps/sa1100-flash.c75
1 files changed, 52 insertions, 23 deletions
diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c
index 8dcaa357b4b..c81bec7b14d 100644
--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -21,6 +21,7 @@
#include <linux/mtd/partitions.h>
#include <linux/mtd/concat.h>
+#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/sizes.h>
#include <asm/mach/flash.h>
@@ -129,20 +130,21 @@ struct sa_subdev_info {
char name[16];
struct map_info map;
struct mtd_info *mtd;
- struct flash_platform_data *data;
+ struct flash_platform_data *plat;
};
struct sa_info {
struct mtd_partition *parts;
struct mtd_info *mtd;
int num_subdev;
+ unsigned int nr_parts;
struct sa_subdev_info subdev[0];
};
static void sa1100_set_vpp(struct map_info *map, int on)
{
struct sa_subdev_info *subdev = container_of(map, struct sa_subdev_info, map);
- subdev->data->set_vpp(on);
+ subdev->plat->set_vpp(on);
}
static void sa1100_destroy_subdev(struct sa_subdev_info *subdev)
@@ -186,7 +188,7 @@ static int sa1100_probe_subdev(struct sa_subdev_info *subdev, struct resource *r
goto out;
}
- if (subdev->data->set_vpp)
+ if (subdev->plat->set_vpp)
subdev->map.set_vpp = sa1100_set_vpp;
subdev->map.phys = phys;
@@ -203,7 +205,7 @@ static int sa1100_probe_subdev(struct sa_subdev_info *subdev, struct resource *r
* Now let's probe for the actual flash. Do it here since
* specific machine settings might have been set above.
*/
- subdev->mtd = do_map_probe(subdev->data->map_name, &subdev->map);
+ subdev->mtd = do_map_probe(subdev->plat->map_name, &subdev->map);
if (subdev->mtd == NULL) {
ret = -ENXIO;
goto err;
@@ -222,13 +224,17 @@ static int sa1100_probe_subdev(struct sa_subdev_info *subdev, struct resource *r
return ret;
}
-static void sa1100_destroy(struct sa_info *info)
+static void sa1100_destroy(struct sa_info *info, struct flash_platform_data *plat)
{
int i;
if (info->mtd) {
- del_mtd_partitions(info->mtd);
-
+ if (info->nr_parts == 0)
+ del_mtd_device(info->mtd);
+#ifdef CONFIG_MTD_PARTITIONS
+ else
+ del_mtd_partitions(info->mtd);
+#endif
#ifdef CONFIG_MTD_CONCAT
if (info->mtd != info->subdev[0].mtd)
mtd_concat_destroy(info->mtd);
@@ -241,10 +247,13 @@ static void sa1100_destroy(struct sa_info *info)
for (i = info->num_subdev - 1; i >= 0; i--)
sa1100_destroy_subdev(&info->subdev[i]);
kfree(info);
+
+ if (plat->exit)
+ plat->exit();
}
static struct sa_info *__init
-sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *flash)
+sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *plat)
{
struct sa_info *info;
int nr, size, i, ret = 0;
@@ -274,6 +283,12 @@ sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *flash
memset(info, 0, size);
+ if (plat->init) {
+ ret = plat->init();
+ if (ret)
+ goto err;
+ }
+
/*
* Claim and then map the memory regions.
*/
@@ -286,8 +301,8 @@ sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *flash
break;
subdev->map.name = subdev->name;
- sprintf(subdev->name, "sa1100-%d", i);
- subdev->data = flash;
+ sprintf(subdev->name, "%s-%d", plat->name, i);
+ subdev->plat = plat;
ret = sa1100_probe_subdev(subdev, res);
if (ret)
@@ -308,7 +323,7 @@ sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *flash
* otherwise fail. Either way, it'll be called "sa1100".
*/
if (info->num_subdev == 1) {
- strcpy(info->subdev[0].name, "sa1100");
+ strcpy(info->subdev[0].name, plat->name);
info->mtd = info->subdev[0].mtd;
ret = 0;
} else if (info->num_subdev > 1) {
@@ -321,7 +336,7 @@ sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *flash
cdev[i] = info->subdev[i].mtd;
info->mtd = mtd_concat_create(cdev, info->num_subdev,
- "sa1100");
+ plat->name);
if (info->mtd == NULL)
ret = -ENXIO;
#else
@@ -335,7 +350,7 @@ sa1100_setup_mtd(struct platform_device *pdev, struct flash_platform_data *flash
return info;
err:
- sa1100_destroy(info);
+ sa1100_destroy(info, plat);
out:
return ERR_PTR(ret);
}
@@ -345,16 +360,16 @@ static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
static int __init sa1100_mtd_probe(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
- struct flash_platform_data *flash = pdev->dev.platform_data;
+ struct flash_platform_data *plat = pdev->dev.platform_data;
struct mtd_partition *parts;
const char *part_type = NULL;
struct sa_info *info;
int err, nr_parts = 0;
- if (!flash)
+ if (!plat)
return -ENODEV;
- info = sa1100_setup_mtd(pdev, flash);
+ info = sa1100_setup_mtd(pdev, plat);
if (IS_ERR(info)) {
err = PTR_ERR(info);
goto out;
@@ -371,8 +386,8 @@ static int __init sa1100_mtd_probe(struct device *dev)
} else
#endif
{
- parts = flash->parts;
- nr_parts = flash->nr_parts;
+ parts = plat->parts;
+ nr_parts = plat->nr_parts;
part_type = "static";
}
@@ -386,6 +401,8 @@ static int __init sa1100_mtd_probe(struct device *dev)
add_mtd_partitions(info->mtd, parts, nr_parts);
}
+ info->nr_parts = nr_parts;
+
dev_set_drvdata(dev, info);
err = 0;
@@ -396,33 +413,44 @@ static int __init sa1100_mtd_probe(struct device *dev)
static int __exit sa1100_mtd_remove(struct device *dev)
{
struct sa_info *info = dev_get_drvdata(dev);
+ struct flash_platform_data *plat = dev->platform_data;
+
dev_set_drvdata(dev, NULL);
- sa1100_destroy(info);
+ sa1100_destroy(info, plat);
+
return 0;
}
#ifdef CONFIG_PM
-static int sa1100_mtd_suspend(struct device *dev, pm_message_t state, u32 level)
+static int sa1100_mtd_suspend(struct device *dev, pm_message_t state)
{
struct sa_info *info = dev_get_drvdata(dev);
int ret = 0;
- if (info && level == SUSPEND_SAVE_STATE)
+ if (info)
ret = info->mtd->suspend(info->mtd);
return ret;
}
-static int sa1100_mtd_resume(struct device *dev, u32 level)
+static int sa1100_mtd_resume(struct device *dev)
{
struct sa_info *info = dev_get_drvdata(dev);
- if (info && level == RESUME_RESTORE_STATE)
+ if (info)
info->mtd->resume(info->mtd);
return 0;
}
+
+static void sa1100_mtd_shutdown(struct device *dev)
+{
+ struct sa_info *info = dev_get_drvdata(dev);
+ if (info && info->mtd->suspend(info->mtd) == 0)
+ info->mtd->resume(info->mtd);
+}
#else
#define sa1100_mtd_suspend NULL
#define sa1100_mtd_resume NULL
+#define sa1100_mtd_shutdown NULL
#endif
static struct device_driver sa1100_mtd_driver = {
@@ -432,6 +460,7 @@ static struct device_driver sa1100_mtd_driver = {
.remove = __exit_p(sa1100_mtd_remove),
.suspend = sa1100_mtd_suspend,
.resume = sa1100_mtd_resume,
+ .shutdown = sa1100_mtd_shutdown,
};
static int __init sa1100_mtd_init(void)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 11:28:44 +0000