mtd: cfi_probe: add support for SST 0x0701 vendorname

SST 39VF160x and 39VF320x chips use vendorname id 0x0701 and alternative
unlock addresses. Add support for them in cfi_probe.c.

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c
index 045dc100496c..b2acd32f4fbf 100644
--- a/drivers/mtd/chips/cfi_probe.c
+++ b/drivers/mtd/chips/cfi_probe.c
@@ -206,6 +206,11 @@ static int __xipram cfi_chip_setup(struct map_info *map,
 #endif
         }
 
+        if (cfi->cfiq->P_ID == P_ID_SST_OLD) {
+                addr_unlock1 = 0x5555;
+                addr_unlock2 = 0x2AAA;
+        }
+
         /*
          * Note we put the device back into Read Mode BEFORE going into Auto
          * Select Mode, as some devices support nesting of modes, others
@@ -271,6 +276,9 @@ static char *vendorname(__u16 vendor)
         case P_ID_SST_PAGE:
                 return "SST Page Write";
 
+        case P_ID_SST_OLD:
+                return "SST 39VF160x/39VF320x";
+
         case P_ID_INTEL_PERFORMANCE:
                 return "Intel Performance Code";
 
diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index cee05b1e62b1..5716fc78ca8e 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -253,6 +253,7 @@ struct cfi_bri_query {
 #define P_ID_MITSUBISHI_STD     0x0100
 #define P_ID_MITSUBISHI_EXT     0x0101
 #define P_ID_SST_PAGE           0x0102
+#define P_ID_SST_OLD            0x0701
 #define P_ID_INTEL_PERFORMANCE  0x0200
 #define P_ID_INTEL_DATA         0x0210
 #define P_ID_RESERVED           0xffff