diff mbox series

[RFC,5/8] mmc: host: sdhci: Factor out the command configuration

Message ID 47c4217fd274b77e2fb5c86812cce883c8ed9bd2.1579164456.git.baolin.wang7@gmail.com
State New
Headers show
Series [RFC,1/8] block: Change the dispatch_request() API to support batch requests | expand

Commit Message

Baolin Wang Jan. 17, 2020, 5:24 a.m. UTC 
Move the SD command configuration into one separate function to simplify
the sdhci_send_command(). Moreover this function can be used to support
ADMA3 transfer mode in following patches.

Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
---
 drivers/mmc/host/sdhci.c |   65 +++++++++++++++++++++++++++-------------------
 1 file changed, 38 insertions(+), 27 deletions(-)
diff mbox series

Patch

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 907a35e..f517121 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1350,9 +1350,43 @@  static void sdhci_finish_data(struct sdhci_host *host)
 	}
 }
 
-void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
+static int sdhci_get_command(struct sdhci_host *host, struct mmc_command *cmd)
 {
 	int flags;
+
+	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
+		pr_err("%s: Unsupported response type!\n",
+			mmc_hostname(host->mmc));
+		cmd->error = -EINVAL;
+		sdhci_finish_mrq(host, cmd->mrq);
+		return -EINVAL;
+	}
+
+	if (!(cmd->flags & MMC_RSP_PRESENT))
+		flags = SDHCI_CMD_RESP_NONE;
+	else if (cmd->flags & MMC_RSP_136)
+		flags = SDHCI_CMD_RESP_LONG;
+	else if (cmd->flags & MMC_RSP_BUSY)
+		flags = SDHCI_CMD_RESP_SHORT_BUSY;
+	else
+		flags = SDHCI_CMD_RESP_SHORT;
+
+	if (cmd->flags & MMC_RSP_CRC)
+		flags |= SDHCI_CMD_CRC;
+	if (cmd->flags & MMC_RSP_OPCODE)
+		flags |= SDHCI_CMD_INDEX;
+
+	/* CMD19 is special in that the Data Present Select should be set */
+	if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK ||
+	    cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200)
+		flags |= SDHCI_CMD_DATA;
+
+	return SDHCI_MAKE_CMD(cmd->opcode, flags);
+}
+
+void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
+{
+	int command;
 	u32 mask;
 	unsigned long timeout;
 
@@ -1402,32 +1436,9 @@  void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 
 	sdhci_set_transfer_mode(host, cmd);
 
-	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
-		pr_err("%s: Unsupported response type!\n",
-			mmc_hostname(host->mmc));
-		cmd->error = -EINVAL;
-		sdhci_finish_mrq(host, cmd->mrq);
+	command = sdhci_get_command(host, cmd);
+	if (command < 0)
 		return;
-	}
-
-	if (!(cmd->flags & MMC_RSP_PRESENT))
-		flags = SDHCI_CMD_RESP_NONE;
-	else if (cmd->flags & MMC_RSP_136)
-		flags = SDHCI_CMD_RESP_LONG;
-	else if (cmd->flags & MMC_RSP_BUSY)
-		flags = SDHCI_CMD_RESP_SHORT_BUSY;
-	else
-		flags = SDHCI_CMD_RESP_SHORT;
-
-	if (cmd->flags & MMC_RSP_CRC)
-		flags |= SDHCI_CMD_CRC;
-	if (cmd->flags & MMC_RSP_OPCODE)
-		flags |= SDHCI_CMD_INDEX;
-
-	/* CMD19 is special in that the Data Present Select should be set */
-	if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK ||
-	    cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200)
-		flags |= SDHCI_CMD_DATA;
 
 	timeout = jiffies;
 	if (host->data_timeout)
@@ -1438,7 +1449,7 @@  void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
 		timeout += 10 * HZ;
 	sdhci_mod_timer(host, cmd->mrq, timeout);
 
-	sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);
+	sdhci_writew(host, command, SDHCI_COMMAND);
 }
 EXPORT_SYMBOL_GPL(sdhci_send_command);