[PATCH 3/4] mci: sdhci: use the busy_timeout value in the sdhci_wait_idle functions

[Sebastien Bourdelin]

From: Sebastien Bourdelin <sebastien.bourdelin at rtone.fr>

The busy_timeout value is used by the sdhci_wait_idle and
sdhci_wait_idle_data functions to define the timeout to wait on when
send a command to the controller.

The default value remains unchanged and is set to 10ms.

Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin at rtone.fr>
---
 drivers/mci/sdhci.c | 14 ++++++++++++--
 drivers/mci/sdhci.h |  2 ++
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/mci/sdhci.c b/drivers/mci/sdhci.c
index fe033583ad..1425c72ef5 100644
--- a/drivers/mci/sdhci.c
+++ b/drivers/mci/sdhci.c
@@ -796,9 +796,11 @@ void sdhci_enable_clk(struct sdhci *host, u16 clk)
 int sdhci_wait_idle(struct sdhci *host, struct mci_cmd *cmd, struct mci_data *data)
 {
 	u32 mask;
+	unsigned timeout_ms;
 	int ret;
 
 	mask = SDHCI_CMD_INHIBIT_CMD;
+	timeout_ms = SDHCI_CMD_DEFAULT_BUSY_TIMEOUT;
 
 	if (data || (cmd && (cmd->resp_type & MMC_RSP_BUSY)))
 		mask |= SDHCI_CMD_INHIBIT_DATA;
@@ -806,7 +808,10 @@ int sdhci_wait_idle(struct sdhci *host, struct mci_cmd *cmd, struct mci_data *da
 	if (cmd && cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
 		mask &= ~SDHCI_CMD_INHIBIT_DATA;
 
-	ret = wait_on_timeout(10 * MSECOND,
+	if (cmd && cmd->busy_timeout != 0)
+		timeout_ms = cmd->busy_timeout;
+
+	ret = wait_on_timeout(timeout_ms * MSECOND,
 			!(sdhci_read32(host, SDHCI_PRESENT_STATE) & mask));
 
 	if (ret) {
@@ -821,14 +826,19 @@ int sdhci_wait_idle(struct sdhci *host, struct mci_cmd *cmd, struct mci_data *da
 int sdhci_wait_idle_data(struct sdhci *host, struct mci_cmd *cmd)
 {
 	u32 mask;
+	unsigned timeout_ms;
 	int ret;
 
 	mask = SDHCI_CMD_INHIBIT_CMD | SDHCI_CMD_INHIBIT_DATA;
+	timeout_ms = SDHCI_CMD_DEFAULT_BUSY_TIMEOUT;
 
 	if (cmd && cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
 		mask &= ~SDHCI_CMD_INHIBIT_DATA;
 
-	ret = wait_on_timeout(10 * MSECOND,
+	if (cmd && cmd->busy_timeout != 0)
+		timeout_ms = cmd->busy_timeout;
+
+	ret = wait_on_timeout(timeout_ms * MSECOND,
 			!(sdhci_read32(host, SDHCI_PRESENT_STATE) & mask));
 
 	if (ret) {
diff --git a/drivers/mci/sdhci.h b/drivers/mci/sdhci.h
index 5de85239b1..757840acc7 100644
--- a/drivers/mci/sdhci.h
+++ b/drivers/mci/sdhci.h
@@ -200,6 +200,8 @@
 #define SDHCI_MAX_DIV_SPEC_200	256
 #define SDHCI_MAX_DIV_SPEC_300	2046
 
+#define SDHCI_CMD_DEFAULT_BUSY_TIMEOUT 10
+
 struct sdhci {
 	u32 (*read32)(struct sdhci *host, int reg);
 	u16 (*read16)(struct sdhci *host, int reg);
-- 
2.46.2