mtd: bcm47xxnflash: support NAND_CMD_STATUS

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c b/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c
index 672dc90aa5b1..ece343ccc1b0 100644
--- a/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c
+++ b/drivers/mtd/nand/bcm47xxnflash/ops_bcm4706.c
@@ -156,6 +156,7 @@ static void bcm47xxnflash_ops_bcm4706_cmdfunc(struct mtd_info *mtd,
 {
         struct nand_chip *nand_chip = (struct nand_chip *)mtd->priv;
         struct bcm47xxnflash *b47n = (struct bcm47xxnflash *)nand_chip->priv;
+        struct bcma_drv_cc *cc = b47n->cc;
         u32 ctlcode;
         int i;
 
@@ -196,6 +197,11 @@ static void bcm47xxnflash_ops_bcm4706_cmdfunc(struct mtd_info *mtd,
                 }
 
                 break;
+        case NAND_CMD_STATUS:
+                ctlcode = NCTL_CSA | NCTL_CMD0 | NAND_CMD_STATUS;
+                if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, ctlcode))
+                        pr_err("STATUS command error\n");
+                break;
         case NAND_CMD_READ0:
                 break;
         case NAND_CMD_READOOB:
@@ -213,6 +219,7 @@ static u8 bcm47xxnflash_ops_bcm4706_read_byte(struct mtd_info *mtd)
 {
         struct nand_chip *nand_chip = (struct nand_chip *)mtd->priv;
         struct bcm47xxnflash *b47n = (struct bcm47xxnflash *)nand_chip->priv;
+        struct bcma_drv_cc *cc = b47n->cc;
         u32 tmp = 0;
 
         switch (b47n->curr_command) {
@@ -223,6 +230,10 @@ static u8 bcm47xxnflash_ops_bcm4706_read_byte(struct mtd_info *mtd)
                         return 0;
                 }
                 return b47n->id_data[b47n->curr_column++];
+        case NAND_CMD_STATUS:
+                if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, NCTL_READ))
+                        return 0;
+                return bcma_cc_read32(cc, BCMA_CC_NFLASH_DATA) & 0xff;
         case NAND_CMD_READOOB:
                 bcm47xxnflash_ops_bcm4706_read(mtd, (u8 *)&tmp, 4);
                 return tmp & 0xFF;