From 031d2ccc16775c9531800979069e141fbedeb2f7 Mon Sep 17 00:00:00 2001
From: Kishon Vijay Abraham I <kishon@ti.com>
Date: Thu, 21 Mar 2019 11:45:44 +0530
Subject: [PATCH] mmc: sdhci-omap: Set caps2 to indicate no physical write
protect pin
After commit 6d5cd068ee59fba ("mmc: sdhci: use WP GPIO in
sdhci_check_ro()") and commit 39ee32ce486756f ("mmc: sdhci-omap: drop
->get_ro() implementation"), sdhci-omap relied on SDHCI_PRESENT_STATE
to check if the card is read-only, if wp-gpios is not populated
in device tree. However SDHCI_PRESENT_STATE in sdhci-omap does not have
correct read-only state.
sdhci-omap can be used by platforms with both micro SD slot and standard
SD slot with physical write protect pin (using GPIO). Set caps2 to
MMC_CAP2_NO_WRITE_PROTECT based on if wp-gpios property is populated or
not.
This fix is required since existing device-tree node doesn't have
"disable-wp" property and to preserve old-dt compatibility.
Fixes: 6d5cd068ee59fba ("mmc: sdhci: use WP GPIO in sdhci_check_ro()")
Fixes: 39ee32ce486756f ("mmc: sdhci-omap: drop ->get_ro() implementation")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/mmc/host/sdhci-omap.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
index b1a66ca3821a5..5bbed477c9b1e 100644
--- a/drivers/mmc/host/sdhci-omap.c
+++ b/drivers/mmc/host/sdhci-omap.c
@@ -1056,6 +1056,9 @@ static int sdhci_omap_probe(struct platform_device *pdev)
mmc->f_max = 48000000;
}
+ if (!mmc_can_gpio_ro(mmc))
+ mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
+
pltfm_host->clk = devm_clk_get(dev, "fck");
if (IS_ERR(pltfm_host->clk)) {
ret = PTR_ERR(pltfm_host->clk);
--
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