[PATCH] mmc: dwmci: Add new register bit at IP version of 240A.

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use_hold_reg bit is added at 240A version.
This register is..
Use Hold Register
0 - CMD and DATA sent to card bypassing HOLD Register
1 - CMD and DATA sent to card through the HOLD Register
Note:
Set to 1'b1 for SDR12 and SDR25
(with non-zero phase-shifted cclk_in_drv)
zero phase shift is not allowed in these modes.
Set to 1'b0 for SDR50, SDR104, and DDR50
(with zero phaseshifted cclk_in_drv)
Set to 1'b1 for SDR50, SDR104, and DDR50
(with non-zero phase-shifted cclk_in_drv)

Signed-off-by: JaeHun Jung <jh0801.jung@xxxxxxxxxxx>
---
 drivers/mmc/host/dw_mmc.c |    5 +++++
 drivers/mmc/host/dw_mmc.h |    1 +
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 8bec1c3..e23bd5b 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -232,6 +232,7 @@ static void dw_mci_set_timeout(struct dw_mci *host)
 static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd)
 {
 	struct mmc_data	*data;
+	struct dw_mci_slot *slot = mmc_priv(mmc);
 	u32 cmdr;
 	cmd->error = -EINPROGRESS;
 
@@ -261,6 +262,10 @@ static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd)
 			cmdr |= SDMMC_CMD_DAT_WR;
 	}
 
+	/* Use hold bit register */
+	if (slot->host->pdata->set_io_timing)
+		cmdr |= SDMMC_USE_HOLD_REG;
+
 	return cmdr;
 }
 
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index df392a1..06c2818 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -111,6 +111,7 @@
 #define SDMMC_INT_ERROR			0xbfc2
 /* Command register defines */
 #define SDMMC_CMD_START			BIT(31)
+#define SDMMC_USE_HOLD_REG		BIT(29)
 #define SDMMC_CMD_CCS_EXP		BIT(23)
 #define SDMMC_CMD_CEATA_RD		BIT(22)
 #define SDMMC_CMD_UPD_CLK		BIT(21)
-- 
1.7.1

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