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authorRafał Miłecki <zajec5@gmail.com>2013-01-06 21:28:50 +0100
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2013-02-04 09:26:30 +0200
commita2f74a7dacc1c17a0b146eb3112217874c5db436 (patch)
treec745afac1c501aefd47b60e85cbc0d3912c9ee4b
parent396afe553bd607dca4d28b00b6cab2ea826acba2 (diff)
downloadop-kernel-dev-a2f74a7dacc1c17a0b146eb3112217874c5db436.zip
op-kernel-dev-a2f74a7dacc1c17a0b146eb3112217874c5db436.tar.gz
mtd: bcm47xxsflash: add own struct for abstrating bus type
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
-rw-r--r--drivers/mtd/devices/bcm47xxsflash.c37
-rw-r--r--drivers/mtd/devices/bcm47xxsflash.h15
-rw-r--r--include/linux/bcma/bcma_driver_chipcommon.h1
3 files changed, 40 insertions, 13 deletions
diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c
index 4714584..8fe1a09 100644
--- a/drivers/mtd/devices/bcm47xxsflash.c
+++ b/drivers/mtd/devices/bcm47xxsflash.c
@@ -5,6 +5,8 @@
#include <linux/platform_device.h>
#include <linux/bcma/bcma.h>
+#include "bcm47xxsflash.h"
+
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Serial flash driver for BCMA bus");
@@ -13,26 +15,27 @@ static const char *probes[] = { "bcm47xxpart", NULL };
static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
- struct bcma_sflash *sflash = mtd->priv;
+ struct bcm47xxsflash *b47s = mtd->priv;
/* Check address range */
if ((from + len) > mtd->size)
return -EINVAL;
- memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(sflash->window + from),
+ memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(b47s->window + from),
len);
return len;
}
-static void bcm47xxsflash_fill_mtd(struct bcma_sflash *sflash,
- struct mtd_info *mtd)
+static void bcm47xxsflash_fill_mtd(struct bcm47xxsflash *b47s)
{
- mtd->priv = sflash;
+ struct mtd_info *mtd = &b47s->mtd;
+
+ mtd->priv = b47s;
mtd->name = "bcm47xxsflash";
mtd->owner = THIS_MODULE;
mtd->type = MTD_ROM;
- mtd->size = sflash->size;
+ mtd->size = b47s->size;
mtd->_read = bcm47xxsflash_read;
/* TODO: implement writing support and verify/change following code */
@@ -43,16 +46,23 @@ static void bcm47xxsflash_fill_mtd(struct bcma_sflash *sflash,
static int bcm47xxsflash_probe(struct platform_device *pdev)
{
struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
+ struct bcm47xxsflash *b47s;
int err;
- sflash->mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
- if (!sflash->mtd) {
+ b47s = kzalloc(sizeof(*b47s), GFP_KERNEL);
+ if (!b47s) {
err = -ENOMEM;
goto out;
}
- bcm47xxsflash_fill_mtd(sflash, sflash->mtd);
+ sflash->priv = b47s;
+
+ b47s->window = sflash->window;
+ b47s->blocksize = sflash->blocksize;
+ b47s->numblocks = sflash->numblocks;
+ b47s->size = sflash->size;
+ bcm47xxsflash_fill_mtd(b47s);
- err = mtd_device_parse_register(sflash->mtd, probes, NULL, NULL, 0);
+ err = mtd_device_parse_register(&b47s->mtd, probes, NULL, NULL, 0);
if (err) {
pr_err("Failed to register MTD device: %d\n", err);
goto err_dev_reg;
@@ -61,7 +71,7 @@ static int bcm47xxsflash_probe(struct platform_device *pdev)
return 0;
err_dev_reg:
- kfree(sflash->mtd);
+ kfree(&b47s->mtd);
out:
return err;
}
@@ -69,9 +79,10 @@ out:
static int bcm47xxsflash_remove(struct platform_device *pdev)
{
struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
+ struct bcm47xxsflash *b47s = sflash->priv;
- mtd_device_unregister(sflash->mtd);
- kfree(sflash->mtd);
+ mtd_device_unregister(&b47s->mtd);
+ kfree(b47s);
return 0;
}
diff --git a/drivers/mtd/devices/bcm47xxsflash.h b/drivers/mtd/devices/bcm47xxsflash.h
new file mode 100644
index 0000000..ebf6f71
--- /dev/null
+++ b/drivers/mtd/devices/bcm47xxsflash.h
@@ -0,0 +1,15 @@
+#ifndef __BCM47XXSFLASH_H
+#define __BCM47XXSFLASH_H
+
+#include <linux/mtd/mtd.h>
+
+struct bcm47xxsflash {
+ u32 window;
+ u32 blocksize;
+ u16 numblocks;
+ u32 size;
+
+ struct mtd_info mtd;
+};
+
+#endif /* BCM47XXSFLASH */
diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h
index 9a0e3fa..a5bfda6 100644
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -528,6 +528,7 @@ struct bcma_sflash {
u32 size;
struct mtd_info *mtd;
+ void *priv;
};
#endif
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