The existing suspend/resume callbacks of sdhci-msm driver are just
gating/un-gating the clocks. During suspend cycle more can be done
like disabling controller, disabling card detection, enabling wake-up events.
So updating the system pm callbacks for performing these extra
actions besides controlling the clocks.
Signed-off-by: Shaik Sajida Bhanu <sbhanu@xxxxxxxxxxxxxx>
Changes since V2:
Removed disabling/enabling pwr-irq from system pm ops.
Changes since V1:
Invoking pm_runtime_force_suspend/resume instead of
sdhci_msm_runtime_suepend/resume.
---
drivers/mmc/host/sdhci-msm.c | 41 +++++++++++++++++++++++++++++++++++++++--
1 file changed, 39 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index c3a160c..fcff3e8 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2159,9 +2159,46 @@ static __maybe_unused int sdhci_msm_runtime_resume(struct device *dev)
return 0;
}
+static int sdhci_msm_suspend(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ int ret;
+
+ if (host->mmc->caps2 & MMC_CAP2_CQE) {
+ ret = cqhci_suspend(host->mmc);
+ if (ret)
+ return ret;
+ }
+
+ ret = sdhci_suspend_host(host);
+ if (ret)
+ return ret;
+
+ return pm_runtime_force_suspend(dev);
+}
+
+static int sdhci_msm_resume(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ int ret;
+
+ ret = pm_runtime_force_resume(dev);
+ if (ret)
+ return ret;
+
+ ret = sdhci_resume_host(host);
+ if (ret < 0)
+ return ret;
+
+ if (host->mmc->caps2 & MMC_CAP2_CQE)
+ ret = cqhci_resume(host->mmc);
+
+ return ret;
+}
+
static const struct dev_pm_ops sdhci_msm_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
- pm_runtime_force_resume)
+ SET_SYSTEM_SLEEP_PM_OPS(sdhci_msm_suspend,
+ sdhci_msm_resume)
SET_RUNTIME_PM_OPS(sdhci_msm_runtime_suspend,
sdhci_msm_runtime_resume,
NULL)
--
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