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| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2015-04-22 10:20:12 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-04-23 08:12:28 +0200 |
| commit | 885a1cf27e6ae7a39113dd6c707d400c1585b35c (patch) | |
| tree | 0042057d9f4946784d00c3f48aa71a3ed5a6fac3 /drivers/of/of_path.c | |
| parent | 0238fb4c0da005421ed11b3e178558a140029972 (diff) | |
| download | barebox-885a1cf27e6ae7a39113dd6c707d400c1585b35c.tar.gz barebox-885a1cf27e6ae7a39113dd6c707d400c1585b35c.tar.xz | |
of_path: of_find_path(): add possibility to return .bb device
This patch adds a flags argument to the of_find_path() function. The only flag
defined for now is OF_FIND_PATH_FLAGS_BB. When used on NAND devices, the
function returns the bad block aware device (the ".bb" device).
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/of/of_path.c')
| -rw-r--r-- | drivers/of/of_path.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/of/of_path.c b/drivers/of/of_path.c index df63c5782a..2dc784851d 100644 --- a/drivers/of/of_path.c +++ b/drivers/of/of_path.c @@ -21,6 +21,8 @@ #include <malloc.h> #include <of.h> +#include <linux/mtd/mtd.h> + struct of_path { struct cdev *cdev; struct device_d *dev; @@ -112,6 +114,7 @@ out: * @propname: the property name of the path description * @outpath: if this function returns 0 outpath will contain the path belonging * to the input path description. Must be freed with free(). + * @flags: use OF_FIND_PATH_FLAGS_BB to return the .bb device if available * * paths in the devicetree have the form of a multistring property. The first * string contains the full path to the physical device containing the path. @@ -127,11 +130,12 @@ out: * device-path = &mmc0, "partname:0"; * device-path = &norflash, "partname:barebox-environment"; */ -int of_find_path(struct device_node *node, const char *propname, char **outpath) +int of_find_path(struct device_node *node, const char *propname, char **outpath, unsigned flags) { struct of_path op = {}; struct device_node *rnode; const char *path, *str; + bool add_bb = false; int i, ret; path = of_get_property(node, propname, NULL); @@ -166,7 +170,11 @@ int of_find_path(struct device_node *node, const char *propname, char **outpath) if (!op.cdev) return -ENOENT; - *outpath = asprintf("/dev/%s", op.cdev->name); + if ((flags & OF_FIND_PATH_FLAGS_BB) && op.cdev->mtd && + mtd_can_have_bb(op.cdev->mtd)) + add_bb = true; + + *outpath = asprintf("/dev/%s%s", op.cdev->name, add_bb ? ".bb" : ""); return 0; } |