Configure SDHC IO pins with low power configuration when the driver
is in suspend state.
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@xxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-msm.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 392d41d57a6e..efd2bae1430c 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -15,6 +15,7 @@
#include <linux/iopoll.h>
#include <linux/regulator/consumer.h>
#include <linux/interconnect.h>
+#include <linux/pinctrl/consumer.h>
#include "sdhci-pltfm.h"
#include "cqhci.h"
@@ -1352,6 +1353,19 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host,
sdhci_msm_hs400(host, &mmc->ios);
}
+static int sdhci_msm_set_pincfg(struct sdhci_msm_host *msm_host, bool level)
+{
+ struct platform_device *pdev = msm_host->pdev;
+ int ret;
+
+ if (level)
+ ret = pinctrl_pm_select_default_state(&pdev->dev);
+ else
+ ret = pinctrl_pm_select_sleep_state(&pdev->dev);
+
+ return ret;
+}
+
static int sdhci_msm_set_vmmc(struct mmc_host *mmc)
{
if (IS_ERR(mmc->supply.vmmc))
@@ -1596,6 +1610,9 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
ret = sdhci_msm_set_vqmmc(msm_host, mmc,
pwr_state & REQ_BUS_ON);
if (!ret)
+ ret = sdhci_msm_set_pincfg(msm_host,
+ pwr_state & REQ_BUS_ON);
+ if (!ret)
irq_ack |= CORE_PWRCTL_BUS_SUCCESS;
else
irq_ack |= CORE_PWRCTL_BUS_FAIL;
--
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