[PATCH RFC 08/12] mmc: mmci: move ST specific register extensions access under condition.

[srinivas . kandagatla]

From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>

This patch moves some of the ST specific register extensions access under
condition, so that other SOCs like Qualcomm or ARM would not a side effect of
writing to those reserved/different purpose bits.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
 drivers/mmc/host/mmci.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 2dc7581..179abfb 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -270,7 +270,8 @@ static void mmci_write_pwrreg(struct mmci_host *host, u32 pwr)
 static void mmci_write_datactrlreg(struct mmci_host *host, u32 datactrl)
 {
 	/* Keep ST Micro busy mode if enabled */
-	datactrl |= host->datactrl_reg & MCI_ST_DPSM_BUSYMODE;
+	if (host->hw_designer == AMBA_VENDOR_ST)
+		datactrl |= host->datactrl_reg & MCI_ST_DPSM_BUSYMODE;
 
 	if (host->datactrl_reg != datactrl) {
 		host->datactrl_reg = datactrl;
@@ -816,7 +817,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 			mmci_write_clkreg(host, clk);
 		}
 
-	if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50)
+	if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 &&
+	    host->hw_designer == AMBA_VENDOR_ST)
 		datactrl |= MCI_ST_DPSM_DDRMODE;
 
 	/*
-- 
1.7.9.5

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