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: [RESEND PATCH 1/9] mmc: dw_mmc: add runtime PM callback
Date: Sun, 9 Oct 2016 21:58:18 +0800 [thread overview]
Message-ID: <1476021506-869-2-git-send-email-shawn.lin@rock-chips.com> (raw)
In-Reply-To: <1476021506-869-1-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>
---
drivers/mmc/host/dw_mmc.c | 30 ++++++++++++++++++++++++++++--
drivers/mmc/host/dw_mmc.h | 4 +++-
2 files changed, 31 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 4fcbc40..c5ef263 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 +3324,33 @@ 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 dw_mci *host)
+{
+ int err = 0;
+
+ 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 dw_mci *host)
+{
+ int ret = 0;
+
+ 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..baa7261 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 dw_mci *host);
+extern int dw_mci_runtime_resume(struct dw_mci *host);
#endif
/**
--
2.3.7
next prev parent reply other threads:[~2016-10-09 13:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20161009135255epcas1p4d5a9db74bb1dea56f61fcb2a720a07f0@epcas1p4.samsung.com>
2016-10-09 13:58 ` [RESEND PATCH 0/9] Init runtime PM support for dw_mmc Shawn Lin
2016-10-09 13:58 ` Shawn Lin [this message]
2016-10-09 13:58 ` [RESEND PATCH 2/9] mmc: dw_mmc-rockchip: add runtime PM support Shawn Lin
2016-10-09 13:58 ` [RESEND PATCH 3/9] mmc: core: expose the capability of gpio card detect Shawn Lin
2016-10-09 13:58 ` [RESEND PATCH 4/9] mmc: dw_mmc-rockchip: disable biu clk if possible Shawn Lin
2016-10-09 14:01 ` [RESEND PATCH 5/9] mmc: dw_mmc-k3: deploay runtime PM facilities Shawn Lin
2016-10-09 14:01 ` [RESEND PATCH 6/9] mmc: dw_mmc-exynos: " Shawn Lin
2016-10-09 14:01 ` [RESEND PATCH 7/9] mmc: dw_mmc-pci: " Shawn Lin
[not found] ` <1476021721-923-1-git-send-email-shawn.lin-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2016-10-09 14:02 ` [RESEND PATCH 8/9] mmc: dw_mmc-pltfm: " Shawn Lin
2016-10-09 14:02 ` [RESEND PATCH 9/9] mmc: dw_mmc: remove system PM callback Shawn Lin
2016-10-10 2:10 ` [RESEND PATCH 0/9] Init runtime PM support for dw_mmc Jaehoon Chung
2016-10-10 2:30 ` Shawn Lin
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