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 V2] mmc: tegra: add sdhci tegra suspend and resume Date: Tue, 2 Apr 2019 10:37:21 -0700 [thread overview] Message-ID: <1554226641-22612-1-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 | 56 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 55 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index eafaaefab4a6..6c91926a012c 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -1611,11 +1611,65 @@ 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; + + ret = clk_prepare_enable(pltfm_host->clk); + if (ret) + return ret; + + ret = sdhci_resume_host(host); + if (ret) + goto disable_clk; + + if (host->mmc->caps2 & MMC_CAP2_CQE) { + ret = cqhci_resume(host->mmc); + if (ret) + goto suspend_host; + } + + return 0; + +suspend_host: + sdhci_suspend_host(host); +disable_clk: + clk_disable_unprepare(pltfm_host->clk); + return ret; +} +#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 V2] mmc: tegra: add sdhci tegra suspend and resume Date: Tue, 2 Apr 2019 10:37:21 -0700 [thread overview] Message-ID: <1554226641-22612-1-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 | 56 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 55 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index eafaaefab4a6..6c91926a012c 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -1611,11 +1611,65 @@ 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; + + ret = clk_prepare_enable(pltfm_host->clk); + if (ret) + return ret; + + ret = sdhci_resume_host(host); + if (ret) + goto disable_clk; + + if (host->mmc->caps2 & MMC_CAP2_CQE) { + ret = cqhci_resume(host->mmc); + if (ret) + goto suspend_host; + } + + return 0; + +suspend_host: + sdhci_suspend_host(host); +disable_clk: + clk_disable_unprepare(pltfm_host->clk); + return ret; +} +#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 17:37 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-04-02 17:37 Sowjanya Komatineni [this message] 2019-04-02 17:37 ` [PATCH V2] mmc: tegra: add sdhci tegra suspend and resume Sowjanya Komatineni 2019-04-03 8:49 ` Thierry Reding
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