mtd: cmdlinepart: Add an slc option to use SLC mode on a part

Add a new option to set the MTD_SLC_ON_MLC_EMULATION flag.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200503155341.16712-8-miquel.raynal@bootlin.com

diff --git a/drivers/mtd/parsers/cmdlinepart.c b/drivers/mtd/parsers/cmdlinepart.c
index c86f2db..af712f1 100644 (file)
--- a/drivers/mtd/parsers/cmdlinepart.c
+++ b/drivers/mtd/parsers/cmdlinepart.c
@@ -9,7 +9,7 @@
  *
  * mtdparts=<mtddef>[;<mtddef]
  * <mtddef>  := <mtd-id>:<partdef>[,<partdef>]
- * <partdef> := <size>[@<offset>][<name>][ro][lk]
+ * <partdef> := <size>[@<offset>][<name>][ro][lk][slc]
  * <mtd-id>  := unique name used in mapping driver/device (mtd->name)
  * <size>    := standard linux memsize OR "-" to denote all remaining space
  *              size is automatically truncated at end of device
@@ -92,7 +92,7 @@ static struct mtd_partition * newpart(char *s,
        int name_len;
        unsigned char *extra_mem;
        char delim;
-       unsigned int mask_flags;
+       unsigned int mask_flags, add_flags;
 
        /* fetch the partition size */
        if (*s == '-') {
@@ -109,6 +109,7 @@ static struct mtd_partition * newpart(char *s,
 
        /* fetch partition name and flags */
        mask_flags = 0; /* this is going to be a regular partition */
+       add_flags = 0;
        delim = 0;
 
        /* check for offset */
@@ -152,6 +153,12 @@ static struct mtd_partition * newpart(char *s,
                s += 2;
        }
 
+       /* if slc is found use emulated SLC mode on this partition*/
+       if (!strncmp(s, "slc", 3)) {
+               add_flags |= MTD_SLC_ON_MLC_EMULATION;
+               s += 3;
+       }
+
        /* test if more partitions are following */
        if (*s == ',') {
                if (size == SIZE_REMAINING) {
@@ -184,6 +191,7 @@ static struct mtd_partition * newpart(char *s,
        parts[this_part].size = size;
        parts[this_part].offset = offset;
        parts[this_part].mask_flags = mask_flags;
+       parts[this_part].add_flags = add_flags;
        if (name)
                strlcpy(extra_mem, name, name_len + 1);
        else