[PATCH 12/18] mtd: rawnand: gpmi: gpmi_ccs_delay() is not needed

[Sam Lefebvre]

From: "Arnout Vandecappelle (Essensium/Mind)" <arnout at mind.be>

The controller already takes care of waiting for tCCS when the RNDIN
or RNDOUT command is sent. That is, the NAND_WAIT_TCCS option is not
set for gpmi-nand. Therefore, the gpmi_ccs_delay() calls are not
needed.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
---
 drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 22 ----------------------
 1 file changed, 22 deletions(-)

diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index 69bdee0ca679..ccde6500f981 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -1112,25 +1112,6 @@ static void gpmi_wait_status_ready(struct mtd_info *mtd, unsigned long timeo)
 	} while (time_before(jiffies, timeo));
 };
 
-static void gpmi_ccs_delay(struct nand_chip *chip)
-{
-	/*
-	 * The controller already takes care of waiting for tCCS when the RNDIN
-	 * or RNDOUT command is sent, return directly.
-	 */
-	if (!(chip->options & NAND_WAIT_TCCS))
-		return;
-
-	/*
-	 * Wait tCCS_min if it is correctly defined, otherwise wait 500ns
-	 * (which should be safe for all NANDs).
-	 */
-	if (chip->setup_data_interface)
-		ndelay(chip->data_interface.timings.sdr.tCCS_min / 1000);
-	else
-		ndelay(500);
-}
-
 /**
  * gpmi_nand_command - Send command to NAND device
  * @mtd: MTD device structure
@@ -1227,7 +1208,6 @@ static void gpmi_nand_command(struct mtd_info *mtd, unsigned int command,
 
 	case NAND_CMD_RNDIN:
 		if (is_lp) {
-			gpmi_ccs_delay(chip);
 			return;
 		}
 		break;
@@ -1251,8 +1231,6 @@ static void gpmi_nand_command(struct mtd_info *mtd, unsigned int command,
 				NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
 			chip->cmd_ctrl(mtd, NAND_CMD_NONE,
 				NAND_NCE | NAND_CTRL_CHANGE);
-
-			gpmi_ccs_delay(chip);
 			return;
 		}
 		break;
-- 
2.14.1