From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: skomatineni@nvidia.com, thierry.reding@gmail.com,
jonathanh@nvidia.com, anrao@nvidia.com, talho@nvidia.com,
bbiswas@nvidia.com, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org
Subject: [PATCH V1] mmc: tegra: add sdhci tegra suspend and resume
Date: Mon, 1 Apr 2019 22:27:33 -0700 [thread overview]
Message-ID: <1554182853-31612-1-git-send-email-skomatineni@nvidia.com> (raw)
This patch adds suspend and resume PM ops for tegra SDHCI.
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
drivers/mmc/host/sdhci-tegra.c | 45 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index eafaaefab4a6..68263ea4a93e 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -1611,11 +1611,54 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int sdhci_tegra_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->mmc->caps2 & MMC_CAP2_CQE) {
+ ret = cqhci_suspend(host->mmc);
+ if (ret)
+ return ret;
+ }
+
+ ret = sdhci_suspend_host(host);
+ if (ret)
+ return ret;
+
+ clk_disable_unprepare(pltfm_host->clk);
+ return 0;
+}
+
+static int sdhci_tegra_resume(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int ret;
+
+ clk_prepare_enable(pltfm_host->clk);
+
+ ret = sdhci_resume_host(host);
+ if (ret)
+ return ret;
+
+ if (host->mmc->caps2 & MMC_CAP2_CQE)
+ return cqhci_resume(host->mmc);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
+ sdhci_tegra_resume);
+
static struct platform_driver sdhci_tegra_driver = {
.driver = {
.name = "sdhci-tegra",
.of_match_table = sdhci_tegra_dt_match,
- .pm = &sdhci_pltfm_pmops,
+ .pm = &sdhci_tegra_dev_pm_ops,
},
.probe = sdhci_tegra_probe,
.remove = sdhci_tegra_remove,
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <adrian.hunter@intel.com>, <ulf.hansson@linaro.org>
Cc: <skomatineni@nvidia.com>, <thierry.reding@gmail.com>,
<jonathanh@nvidia.com>, <anrao@nvidia.com>, <talho@nvidia.com>,
<bbiswas@nvidia.com>, <linux-tegra@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-mmc@vger.kernel.org>
Subject: [PATCH V1] mmc: tegra: add sdhci tegra suspend and resume
Date: Mon, 1 Apr 2019 22:27:33 -0700 [thread overview]
Message-ID: <1554182853-31612-1-git-send-email-skomatineni@nvidia.com> (raw)
This patch adds suspend and resume PM ops for tegra SDHCI.
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
drivers/mmc/host/sdhci-tegra.c | 45 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index eafaaefab4a6..68263ea4a93e 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -1611,11 +1611,54 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int sdhci_tegra_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->mmc->caps2 & MMC_CAP2_CQE) {
+ ret = cqhci_suspend(host->mmc);
+ if (ret)
+ return ret;
+ }
+
+ ret = sdhci_suspend_host(host);
+ if (ret)
+ return ret;
+
+ clk_disable_unprepare(pltfm_host->clk);
+ return 0;
+}
+
+static int sdhci_tegra_resume(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int ret;
+
+ clk_prepare_enable(pltfm_host->clk);
+
+ ret = sdhci_resume_host(host);
+ if (ret)
+ return ret;
+
+ if (host->mmc->caps2 & MMC_CAP2_CQE)
+ return cqhci_resume(host->mmc);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
+ sdhci_tegra_resume);
+
static struct platform_driver sdhci_tegra_driver = {
.driver = {
.name = "sdhci-tegra",
.of_match_table = sdhci_tegra_dt_match,
- .pm = &sdhci_pltfm_pmops,
+ .pm = &sdhci_tegra_dev_pm_ops,
},
.probe = sdhci_tegra_probe,
.remove = sdhci_tegra_remove,
--
2.7.4
next reply other threads:[~2019-04-02 5:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 5:27 Sowjanya Komatineni [this message]
2019-04-02 5:27 ` [PATCH V1] mmc: tegra: add sdhci tegra suspend and resume Sowjanya Komatineni
2019-04-02 14:59 ` Thierry Reding
2019-04-02 16:41 ` Sowjanya Komatineni
2019-04-02 16:48 ` Thierry Reding
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