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path: root/drivers/mmc/host/sdhci-msm.c
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Diffstat (limited to 'drivers/mmc/host/sdhci-msm.c')
-rw-r--r--drivers/mmc/host/sdhci-msm.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index e44b7a66b73c..290a14cdc1cf 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2089,6 +2089,23 @@ static void sdhci_msm_cqe_disable(struct mmc_host *mmc, bool recovery)
sdhci_cqe_disable(mmc, recovery);
}
+static void sdhci_msm_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
+{
+ u32 count, start = 15;
+
+ __sdhci_set_timeout(host, cmd);
+ count = sdhci_readb(host, SDHCI_TIMEOUT_CONTROL);
+ /*
+ * Update software timeout value if its value is less than hardware data
+ * timeout value. Qcom SoC hardware data timeout value was calculated
+ * using 4 * MCLK * 2^(count + 13). where MCLK = 1 / host->clock.
+ */
+ if (cmd && cmd->data && host->clock > 400000 &&
+ host->clock <= 50000000 &&
+ ((1 << (count + start)) > (10 * host->clock)))
+ host->data_timeout = 22LL * NSEC_PER_SEC;
+}
+
static const struct cqhci_host_ops sdhci_msm_cqhci_ops = {
.enable = sdhci_msm_cqe_enable,
.disable = sdhci_msm_cqe_disable,
@@ -2438,6 +2455,7 @@ static const struct sdhci_ops sdhci_msm_ops = {
.irq = sdhci_msm_cqe_irq,
.dump_vendor_regs = sdhci_msm_dump_vendor_regs,
.set_power = sdhci_set_power_noreg,
+ .set_timeout = sdhci_msm_set_timeout,
};
static const struct sdhci_pltfm_data sdhci_msm_pdata = {