linux-kernel - [PATCH 09/10] mmc: tegra: Perform pad calibration after voltage switch

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Message-ID: <1532442865-6391-8-git-send-email-avienamo@nvidia.com>
Date:   Tue, 24 Jul 2018 17:34:25 +0300
From:   Aapo Vienamo <avienamo@...dia.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        "Adrian Hunter" <adrian.hunter@...el.com>,
        Mikko Perttunen <mperttunen@...dia.com>
CC:     <linux-mmc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Aapo Vienamo <avienamo@...dia.com>
Subject: [PATCH 09/10] mmc: tegra: Perform pad calibration after voltage switch

Run the automatic pad calibration after voltage switching if
tegra_host->pad_calib_required is set.

Signed-off-by: Aapo Vienamo <avienamo@...dia.com>
---
 drivers/mmc/host/sdhci-tegra.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 78781bd..529aa4e7 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -537,6 +537,8 @@ static int sdhci_tegra_start_signal_voltage_switch(struct mmc_host *mmc,
 						   struct mmc_ios *ios)
 {
 	struct sdhci_host *host = mmc_priv(mmc);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
 	int ret = 0;
 
 	if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
@@ -551,6 +553,9 @@ static int sdhci_tegra_start_signal_voltage_switch(struct mmc_host *mmc,
 		ret = tegra_sdhci_set_padctrl(host, ios->signal_voltage);
 	}
 
+	if (tegra_host->pad_calib_required)
+		tegra_sdhci_pad_autocalib(host);
+
 	return ret;
 }
 
-- 
2.7.4