From: Shawn Lin <shawn.lin@rock-chips.com>
To: Jaehoon Chung <jh80.chung@samsung.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc@vger.kernel.org, Doug Anderson <dianders@chromium.org>,
linux-rockchip@lists.infradead.org,
Shawn Lin <shawn.lin@rock-chips.com>
Subject: [PATCH v2 1/9] mmc: dw_mmc: add runtime PM callback
Date: Wed, 12 Oct 2016 10:50:35 +0800 [thread overview]
Message-ID: <1476240643-5701-2-git-send-email-shawn.lin@rock-chips.com> (raw)
In-Reply-To: <1476240643-5701-1-git-send-email-shawn.lin@rock-chips.com>
This patch add dw_mci_runtime_suspend/resume interfaces
and expose it to dw_mci variant driver to support runtime
PM.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---
Changes in v2:
- use struct device as argument for runtime callback
drivers/mmc/host/dw_mmc.c | 32 ++++++++++++++++++++++++++++++--
drivers/mmc/host/dw_mmc.h | 4 +++-
2 files changed, 33 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 4fcbc40..67fa088 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -3266,7 +3266,7 @@ EXPORT_SYMBOL(dw_mci_remove);
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_PM
/*
* TODO: we should probably disable the clock to the card in the suspend path.
*/
@@ -3324,7 +3324,35 @@ int dw_mci_resume(struct dw_mci *host)
return 0;
}
EXPORT_SYMBOL(dw_mci_resume);
-#endif /* CONFIG_PM_SLEEP */
+
+int dw_mci_runtime_suspend(struct device *dev)
+{
+ int err = 0;
+ struct dw_mci *host = dev_get_drvdata(dev);
+
+ err = dw_mci_suspend(host);
+ if (err)
+ return err;
+
+ clk_disable_unprepare(host->ciu_clk);
+
+ return err;
+}
+EXPORT_SYMBOL(dw_mci_runtime_suspend);
+
+int dw_mci_runtime_resume(struct device *dev)
+{
+ int ret = 0;
+ struct dw_mci *host = dev_get_drvdata(dev);
+
+ ret = clk_prepare_enable(host->ciu_clk);
+ if (ret)
+ return ret;
+
+ return dw_mci_resume(host);
+}
+EXPORT_SYMBOL(dw_mci_runtime_resume);
+#endif /* CONFIG_PM */
static int __init dw_mci_init(void)
{
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index e8cd2de..d14a391 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -234,9 +234,11 @@
extern int dw_mci_probe(struct dw_mci *host);
extern void dw_mci_remove(struct dw_mci *host);
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_PM
extern int dw_mci_suspend(struct dw_mci *host);
extern int dw_mci_resume(struct dw_mci *host);
+extern int dw_mci_runtime_suspend(struct device *device);
+extern int dw_mci_runtime_resume(struct device *device);
#endif
/**
--
2.3.7
next prev parent reply other threads:[~2016-10-12 2:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20161012024453epcas1p1bdc2c6bd18d864b5535bd2b067b491af@epcas1p1.samsung.com>
2016-10-12 2:50 ` [PATCH v2 0/9] Init runtime PM support for dw_mmc Shawn Lin
2016-10-12 2:50 ` Shawn Lin [this message]
2016-10-12 2:50 ` [PATCH v2 2/9] mmc: dw_mmc-rockchip: add runtime PM support Shawn Lin
2016-10-12 2:50 ` [PATCH v2 3/9] mmc: core: expose the capability of gpio card detect Shawn Lin
2016-10-12 2:50 ` [PATCH v2 4/9] mmc: dw_mmc: disable biu clk if possible Shawn Lin
[not found] ` <1476240643-5701-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2016-10-12 2:54 ` [PATCH v2 5/9] mmc: dw_mmc-k3: deploy runtime PM facilities Shawn Lin
2016-10-12 2:55 ` [PATCH v2 6/9] mmc: dw_mmc-exynos: " Shawn Lin
2016-10-12 2:56 ` [PATCH v2 7/9] mmc: dw_mmc-pci: " Shawn Lin
2016-10-12 2:56 ` [PATCH v2 8/9] mmc: dw_mmc-pltfm: " Shawn Lin
2016-10-12 2:56 ` [PATCH v2 9/9] mmc: dw_mmc: remove system PM callback Shawn Lin
2016-10-18 0:24 ` [PATCH v2 0/9] Init runtime PM support for dw_mmc Jaehoon Chung
2016-10-18 1:04 ` Shawn Lin
2016-10-18 8:46 ` Ulf Hansson
2016-10-18 10:45 ` Jaehoon Chung
[not found] ` <17f821c0-46d3-76e7-06dd-fbb415de37eb-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2016-10-18 11:15 ` Ulf Hansson
2016-10-18 11:35 ` Shawn Lin
2016-10-18 13:26 ` Heiko Stübner
2016-10-21 1:56 ` Jaehoon Chung
2016-10-21 2:43 ` Shawn Lin
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