Merge branch 'master' of git://git.denx.de/u-boot-mmc

* 'master' of git://git.denx.de/u-boot-mmc:
  mmc: make mmc_send_status() more reliable
  mmc: fix card busy polling
  Tegra: mmc: Fixed handling of interrupts in timeouts.
  omap_hsmmc: Wait for CMDI to be clear

3 files changed, 25 insertions, 18 deletions

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 6db37b1..49c3349 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -108,7 +108,7 @@ int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
 int mmc_send_status(struct mmc *mmc, int timeout)
 {
 	struct mmc_cmd cmd;
-	int err;
+	int err, retries = 5;
 #ifdef CONFIG_MMC_TRACE
 	int status;
 #endif
@@ -121,17 +121,21 @@ int mmc_send_status(struct mmc *mmc, int timeout)
 
 	do {
 		err = mmc_send_cmd(mmc, &cmd, NULL);
-		if (err)
+		if (!err) {
+			if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
+			    (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
+			     MMC_STATE_PRG)
+				break;
+			else if (cmd.response[0] & MMC_STATUS_MASK) {
+				printf("Status Error: 0x%08X\n",
+					cmd.response[0]);
+				return COMM_ERR;
+			}
+		} else if (--retries < 0)
 			return err;
-		else if (cmd.response[0] & MMC_STATUS_RDY_FOR_DATA)
-			break;
 
 		udelay(1000);
 
-		if (cmd.response[0] & MMC_STATUS_MASK) {
-			printf("Status Error: 0x%08X\n", cmd.response[0]);
-			return COMM_ERR;
-		}
 	} while (timeout--);
 
 #ifdef CONFIG_MMC_TRACE
@@ -305,11 +309,12 @@ mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src)
 			printf("mmc fail to send stop cmd\n");
 			return 0;
 		}
-
-		/* Waiting for the ready status */
-		mmc_send_status(mmc, timeout);
 	}
 
+	/* Waiting for the ready status */
+	if (mmc_send_status(mmc, timeout))
+		return 0;
+
 	return blkcnt;
 }
 
@@ -341,7 +346,6 @@ int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt)
 {
 	struct mmc_cmd cmd;
 	struct mmc_data data;
-	int timeout = 1000;
 
 	if (blkcnt > 1)
 		cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
@@ -373,9 +377,6 @@ int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt)
 			printf("mmc fail to send stop cmd\n");
 			return 0;
 		}
-
-		/* Waiting for the ready status */
-		mmc_send_status(mmc, timeout);
 	}
 
 	return blkcnt;
@@ -610,7 +611,8 @@ int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
 	ret = mmc_send_cmd(mmc, &cmd, NULL);
 
 	/* Waiting for the ready status */
-	mmc_send_status(mmc, timeout);
+	if (!ret)
+		ret = mmc_send_status(mmc, timeout);
 
 	return ret;
 
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index ef64e37..2400db2 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -198,9 +198,10 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 	ulong start;
 
 	start = get_timer(0);
-	while ((readl(&mmc_base->pstate) & DATI_MASK) == DATI_CMDDIS) {
+	while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
 		if (get_timer(0) - start > MAX_RETRY_MS) {
-			printf("%s: timedout waiting for cmddis!\n", __func__);
+			printf("%s: timedout waiting on cmd inhibit to clear\n",
+					__func__);
 			return TIMEOUT;
 		}
 	}
diff --git a/drivers/mmc/tegra2_mmc.c b/drivers/mmc/tegra2_mmc.c
index 3191557..33cc8fb 100644
--- a/drivers/mmc/tegra2_mmc.c
+++ b/drivers/mmc/tegra2_mmc.c
@@ -227,16 +227,19 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 
 	if (i == retry) {
 		printf("%s: waiting for status update\n", __func__);
+		writel(mask, &host->reg->norintsts);
 		return TIMEOUT;
 	}
 
 	if (mask & TEGRA_MMC_NORINTSTS_CMD_TIMEOUT) {
 		/* Timeout Error */
 		debug("timeout: %08x cmd %d\n", mask, cmd->cmdidx);
+		writel(mask, &host->reg->norintsts);
 		return TIMEOUT;
 	} else if (mask & TEGRA_MMC_NORINTSTS_ERR_INTERRUPT) {
 		/* Error Interrupt */
 		debug("error: %08x cmd %d\n", mask, cmd->cmdidx);
+		writel(mask, &host->reg->norintsts);
 		return -1;
 	}
 
@@ -265,6 +268,7 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 
 			if (i == retry) {
 				printf("%s: card is still busy\n", __func__);
+				writel(mask, &host->reg->norintsts);
 				return TIMEOUT;
 			}