nand: Sync with Linux v4.1

[karo-tx-uboot.git] / drivers / mtd / nand / fsl_elbc_nand.c

diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 7e1e6ec78b20081dc4b48d586bc0ece55e1fcebf..d457d53574a63d074558dbc6e74e23f84885fb7d 100644 (file)
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -37,7 +37,6 @@
 
 #define MAX_BANKS 8
 #define ERR_BYTE 0xFF /* Value returned for read bytes when read failed */
-#define FCM_TIMEOUT_MSECS 10 /* Maximum number of mSecs to wait for FCM */
 
 #define LTESR_NAND_MASK (LTESR_FCT | LTESR_PAR | LTESR_CC)
 
@@ -199,7 +198,8 @@ static int fsl_elbc_run_command(struct mtd_info *mtd)
        struct fsl_elbc_mtd *priv = chip->priv;
        struct fsl_elbc_ctrl *ctrl = priv->ctrl;
        fsl_lbc_t *lbc = ctrl->regs;
-       long long end_tick;
+       u32 timeo = (CONFIG_SYS_HZ * 10) / 1000;
+       u32 time_start;
        u32 ltesr;
 
        /* Setup the FMR[OP] to execute without write protection */
@@ -218,10 +218,10 @@ static int fsl_elbc_run_command(struct mtd_info *mtd)
        out_be32(&lbc->lsor, priv->bank);
 
        /* wait for FCM complete flag or timeout */
-       end_tick = usec2ticks(FCM_TIMEOUT_MSECS * 1000) + get_ticks();
+       time_start = get_timer(0);
 
        ltesr = 0;
-       while (end_tick > get_ticks()) {
+       while (get_timer(time_start) < timeo) {
                ltesr = in_be32(&lbc->ltesr);
                if (ltesr & LTESR_CC)
                        break;
@@ -561,41 +561,6 @@ static void fsl_elbc_read_buf(struct mtd_info *mtd, u8 *buf, int len)
                       len, avail);
 }
 
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-/*
- * Verify buffer against the FCM Controller Data Buffer
- */
-static int fsl_elbc_verify_buf(struct mtd_info *mtd,
-                              const u_char *buf, int len)
-{
-       struct nand_chip *chip = mtd->priv;
-       struct fsl_elbc_mtd *priv = chip->priv;
-       struct fsl_elbc_ctrl *ctrl = priv->ctrl;
-       int i;
-
-       if (len < 0) {
-               printf("write_buf of %d bytes", len);
-               return -EINVAL;
-       }
-
-       if ((unsigned int)len > ctrl->read_bytes - ctrl->index) {
-               printf("verify_buf beyond end of buffer "
-                      "(%d requested, %u available)\n",
-                      len, ctrl->read_bytes - ctrl->index);
-
-               ctrl->index = ctrl->read_bytes;
-               return -EINVAL;
-       }
-
-       for (i = 0; i < len; i++)
-               if (in_8(&ctrl->addr[ctrl->index + i]) != buf[i])
-                       break;
-
-       ctrl->index += len;
-       return i == len && ctrl->status == LTESR_CC ? 0 : -EIO;
-}
-#endif
-
 /* This function is called after Program and Erase Operations to
  * check for success or failure.
  */
@@ -656,6 +621,19 @@ static int fsl_elbc_write_page(struct mtd_info *mtd, struct nand_chip *chip,
 
 static struct fsl_elbc_ctrl *elbc_ctrl;
 
+/* ECC will be calculated automatically, and errors will be detected in
+ * waitfunc.
+ */
+static int fsl_elbc_write_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+                               uint32_t offset, uint32_t data_len,
+                               const uint8_t *buf, int oob_required)
+{
+       fsl_elbc_write_buf(mtd, buf, mtd->writesize);
+       fsl_elbc_write_buf(mtd, chip->oob_poi, mtd->oobsize);
+
+       return 0;
+}
+
 static void fsl_elbc_ctrl_init(void)
 {
        elbc_ctrl = kzalloc(sizeof(*elbc_ctrl), GFP_KERNEL);
@@ -714,6 +692,7 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr)
        if (priv->bank >= MAX_BANKS) {
                printf("fsl_elbc_nand: address did not match any "
                       "chip selects\n");
+               kfree(priv);
                return -ENODEV;
        }
 
@@ -727,9 +706,6 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr)
        nand->read_byte = fsl_elbc_read_byte;
        nand->write_buf = fsl_elbc_write_buf;
        nand->read_buf = fsl_elbc_read_buf;
-#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
-       nand->verify_buf = fsl_elbc_verify_buf;
-#endif
        nand->select_chip = fsl_elbc_select_chip;
        nand->cmdfunc = fsl_elbc_cmdfunc;
        nand->waitfunc = fsl_elbc_wait;
@@ -747,6 +723,7 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr)
 
        nand->ecc.read_page = fsl_elbc_read_page;
        nand->ecc.write_page = fsl_elbc_write_page;
+       nand->ecc.write_subpage = fsl_elbc_write_subpage;
 
        priv->fmr = (15 << FMR_CWTO_SHIFT) | (2 << FMR_AL_SHIFT);