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Thomas Petazzoni authored
Even though SDHCI controllers may have a dedicated WP pin that can be queried using the SDHCI_PRESENT_STATE register, some platforms may chose to use a separate regular GPIO to route the WP signal. Such a GPIO is typically represented using the wp-gpios property in the Device Tree. Unfortunately, the current sdhci_check_ro() function does not make use of such GPIO when available: it either uses a host controller specific ->get_ro() operation, or uses the SDHCI_PRESENT_STATE. Several host controller specific ->get_ro() functions are implemented just to check a WP GPIO state. Instead of pushing this to more controller-specific implementations, let's handle this in the core SDHCI code, just like it is already done for the CD GPIO in sdhci_get_cd(). The below patch simply changes sdhci_check_ro() to use the value of the WP GPIO if available. Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@bootlin.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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