mmc: sdhci-sprd: Implement the get_max_timeout_count() interface

[ Upstream commit 7486831d7d6aebcf851f9a4bbe65080351d5c9fb ]

Implement the get_max_timeout_count() interface to set the Spredtrum SD
host controller actual maximum timeout count.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index 9d0f58a6652761fb553483f58213aa833c08a66a..1c5e6b77ca641258ee64ed068788eb8368ba52d4 100644 (file)
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -285,6 +285,12 @@ static void sdhci_sprd_hw_reset(struct sdhci_host *host)
        usleep_range(300, 500);
 }
 
+static unsigned int sdhci_sprd_get_max_timeout_count(struct sdhci_host *host)
+{
+       /* The Spredtrum controller actual maximum timeout count is 1 << 31 */
+       return 1 << 31;
+}
+
 static struct sdhci_ops sdhci_sprd_ops = {
        .read_l = sdhci_sprd_readl,
        .write_l = sdhci_sprd_writel,
@@ -296,6 +302,7 @@ static struct sdhci_ops sdhci_sprd_ops = {
        .reset = sdhci_reset,
        .set_uhs_signaling = sdhci_sprd_set_uhs_signaling,
        .hw_reset = sdhci_sprd_hw_reset,
+       .get_max_timeout_count = sdhci_sprd_get_max_timeout_count,
 };
 
 static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)