From: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>
When the regulators are not managed by SDHCI host driver (i.e.,
when host->vmmc and host->vmmcq are absent), get the regulator
current capabilities through a new host op get_current_limit().
Signed-off-by: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>
Signed-off-by: Sayali Lokhande <sayalil@xxxxxxxxxxxxxx>
[vviswana@xxxxxxxxxxxxxx: fixed trivial merge conflicts]
Signed-off-by: Vijay Viswanath <vviswana@xxxxxxxxxxxxxx>
Change-Id: I3370a2411beec1f03cc5f102bf95cd816c60351e
---
drivers/mmc/host/sdhci.c | 11 ++++++++---
drivers/mmc/host/sdhci.h | 1 +
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 0d5fcca..edc2ccd 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3570,10 +3570,15 @@ int sdhci_setup_host(struct sdhci_host *host)
* value.
*/
max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT);
- if (!max_current_caps && !IS_ERR(mmc->supply.vmmc)) {
- int curr = regulator_get_current_limit(mmc->supply.vmmc);
- if (curr > 0) {
+ if (!max_current_caps) {
+ u32 curr = 0;
+
+ if (!IS_ERR(mmc->supply.vmmc))
+ curr = regulator_get_current_limit(mmc->supply.vmmc);
+ else if (host->ops->get_current_limit)
+ curr = host->ops->get_current_limit(host);
+ if (curr > 0) {
/* convert to SDHCI_MAX_CURRENT format */
curr = curr/1000; /* convert to mA */
curr = curr/SDHCI_MAX_CURRENT_MULTIPLIER;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 54bc444..a01af78 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -584,6 +584,7 @@ struct sdhci_ops {
void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
void (*card_event)(struct sdhci_host *host);
void (*voltage_switch)(struct sdhci_host *host);
+ unsigned int (*get_current_limit)(struct sdhci_host *host);
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
--
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Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
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