6.1-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
commit 431946c0f640c93421439a6c928efb3152c035a4 upstream.
The card-detect GPIO for the microSD slot on Asus T100TA / T100TAM models stopped working under Linux after commit 6fd03f024828 ("gpiolib: acpi: support bias pull disable").
The GPIO in question is connected to a mechanical switch in the slot which shorts the pin to GND when a card is inserted.
The GPIO pin correctly gets configured with a 20K pull-up by the BIOS, but there is a bug in the DSDT where the GpioInt for the card-detect is configured with a PullNone setting:
GpioInt (Edge, ActiveBoth, SharedAndWake, PullNone, 0x2710, "\_SB.GPO0", 0x00, ResourceConsumer, , ) { // Pin list 0x0026 }
Linux now actually honors the PullNone setting and disables the 20K pull-up configured by the BIOS.
Add a new DMI_QUIRK_SD_CD_ENABLE_PULL_UP quirk which when set calls mmc_gpiod_set_cd_config() to re-enable the pull-up and set this for the Asus T100TA models to fix this.
Fixes: 6fd03f024828 ("gpiolib: acpi: support bias pull disable") Reviewed-by: Andy Shevchenko andy@kernel.org Signed-off-by: Hans de Goede hdegoede@redhat.com Acked-by: Adrian Hunter adrian.hunter@intel.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240410191639.526324-7-hdegoede@redhat.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mmc/host/sdhci-acpi.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
--- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -10,6 +10,7 @@ #include <linux/export.h> #include <linux/module.h> #include <linux/device.h> +#include <linux/pinctrl/pinconf-generic.h> #include <linux/platform_device.h> #include <linux/ioport.h> #include <linux/io.h> @@ -81,6 +82,7 @@ enum { DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP = BIT(0), DMI_QUIRK_SD_NO_WRITE_PROTECT = BIT(1), DMI_QUIRK_SD_CD_ACTIVE_HIGH = BIT(2), + DMI_QUIRK_SD_CD_ENABLE_PULL_UP = BIT(3), };
static inline void *sdhci_acpi_priv(struct sdhci_acpi_host *c) @@ -735,6 +737,14 @@ static const struct dmi_system_id sdhci_ .driver_data = (void *)DMI_QUIRK_SD_NO_WRITE_PROTECT, }, { + /* Asus T100TA, needs pull-up for cd but DSDT GpioInt has NoPull set */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + DMI_MATCH(DMI_PRODUCT_NAME, "T100TA"), + }, + .driver_data = (void *)DMI_QUIRK_SD_CD_ENABLE_PULL_UP, + }, + { /* * The Lenovo Miix 320-10ICR has a bug in the _PS0 method of * the SHC1 ACPI device, this bug causes it to reprogram the @@ -908,6 +918,9 @@ static int sdhci_acpi_probe(struct platf goto err_free; dev_warn(dev, "failed to setup card detect gpio\n"); c->use_runtime_pm = false; + } else if (quirks & DMI_QUIRK_SD_CD_ENABLE_PULL_UP) { + mmc_gpiod_set_cd_config(host->mmc, + PIN_CONF_PACKED(PIN_CONFIG_BIAS_PULL_UP, 20000)); }
if (quirks & DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP)