linux-kernel - [PATCH v4 4/4] mmc: sdhci-pltfm: export sdhci_pltfm

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Date:   Wed, 23 Aug 2017 13:15:03 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-mmc@...r.kernel.org
Cc:     Piotr Sroka <piotrs@...ence.com>, Hu Ziji <huziji@...vell.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Christian Daudt <csd@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Zhangfei Gao <zhangfei.gao@...vell.com>,
        Kevin Hao <haokexin@...il.com>,
        Olof Johansson <olof@...om.net>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org, Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH v4 4/4] mmc: sdhci-pltfm: export sdhci_pltfm_suspend/resume

This will be useful when drivers want to reuse either suspend or
resume callback instead of whole of sdhci_pltfm_pmops.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

 drivers/mmc/host/sdhci-cadence.c | 20 +-------------------
 drivers/mmc/host/sdhci-pltfm.c   |  6 ++++--
 drivers/mmc/host/sdhci-pltfm.h   |  2 ++
 3 files changed, 7 insertions(+), 21 deletions(-)

diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
index 3dca3b3c6436..56529c3d389a 100644
--- a/drivers/mmc/host/sdhci-cadence.c
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -391,24 +391,6 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
 }
 
 #ifdef CONFIG_PM_SLEEP
-static int sdhci_cdns_suspend(struct device *dev)
-{
-	struct sdhci_host *host = dev_get_drvdata(dev);
-	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	int ret;
-
-	if (host->tuning_mode != SDHCI_TUNING_MODE_3)
-		mmc_retune_needed(host->mmc);
-
-	ret = sdhci_suspend_host(host);
-	if (ret)
-		return ret;
-
-	clk_disable_unprepare(pltfm_host->clk);
-
-	return 0;
-}
-
 static int sdhci_cdns_resume(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
@@ -438,7 +420,7 @@ static int sdhci_cdns_resume(struct device *dev)
 #endif
 
 static const struct dev_pm_ops sdhci_cdns_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(sdhci_cdns_suspend, sdhci_cdns_resume)
+	SET_SYSTEM_SLEEP_PM_OPS(sdhci_pltfm_suspend, sdhci_cdns_resume)
 };
 
 static const struct of_device_id sdhci_cdns_match[] = {
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 4c0135e184e9..02bea6159d79 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -209,7 +209,7 @@ int sdhci_pltfm_unregister(struct platform_device *pdev)
 EXPORT_SYMBOL_GPL(sdhci_pltfm_unregister);
 
 #ifdef CONFIG_PM_SLEEP
-static int sdhci_pltfm_suspend(struct device *dev)
+int sdhci_pltfm_suspend(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -226,8 +226,9 @@ static int sdhci_pltfm_suspend(struct device *dev)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(sdhci_pltfm_suspend);
 
-static int sdhci_pltfm_resume(struct device *dev)
+int sdhci_pltfm_resume(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -243,6 +244,7 @@ static int sdhci_pltfm_resume(struct device *dev)
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(sdhci_pltfm_resume);
 #endif
 
 const struct dev_pm_ops sdhci_pltfm_pmops = {
diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h
index 957839d0fe37..1e91fb1c020e 100644
--- a/drivers/mmc/host/sdhci-pltfm.h
+++ b/drivers/mmc/host/sdhci-pltfm.h
@@ -109,6 +109,8 @@ static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host)
 	return host->private;
 }
 
+int sdhci_pltfm_suspend(struct device *dev);
+int sdhci_pltfm_resume(struct device *dev);
 extern const struct dev_pm_ops sdhci_pltfm_pmops;
 
 #endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */
-- 
2.7.4