[PATCH v2 3/6] mmc: sdhci-acpi: Fix Lenovo Yoga Tablet 2 Pro 1380 sdcard slot not working

[Hans de Goede <hdegoede@redhat.com>]

The Lenovo Yoga Tablet 2 Pro 1380 sdcard slot has an active high cd pin
and a broken wp pin which always reports the card being write-protected.

Add a DMI quirk to address both issues.

Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/mmc/host/sdhci-acpi.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index d2003d3be6ba..c0d77f589deb 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -80,6 +80,7 @@ struct sdhci_acpi_host {
 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),
 };
 
 static inline void *sdhci_acpi_priv(struct sdhci_acpi_host *c)
@@ -747,6 +748,26 @@ static const struct dmi_system_id sdhci_acpi_quirks[] = {
 		},
 		.driver_data = (void *)DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP,
 	},
+	{
+		/*
+		 * Lenovo Yoga Tablet 2 Pro 1380F/L (13" Android version) this
+		 * has broken WP reporting and an inverted CD signal.
+		 * Note this has more or less the same BIOS as the Lenovo Yoga
+		 * Tablet 2 830F/L or 1050F/L (8" and 10" Android), but unlike
+		 * the 830 / 1050 models which share the same mainboard this
+		 * model has a different mainboard and the inverted CD and
+		 * broken WP are unique to this board.
+		 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"),
+			DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
+			/* Full match so as to NOT match the 830/1050 BIOS */
+			DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21.X64.0005.R00.1504101516"),
+		},
+		.driver_data = (void *)(DMI_QUIRK_SD_NO_WRITE_PROTECT |
+					DMI_QUIRK_SD_CD_ACTIVE_HIGH),
+	},
 	{
 		/*
 		 * The Toshiba WT8-B's microSD slot always reports the card being
@@ -867,6 +888,9 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) {
 		bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL);
 
+		if (quirks & DMI_QUIRK_SD_CD_ACTIVE_HIGH)
+			host->mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
+
 		err = mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0);
 		if (err) {
 			if (err == -EPROBE_DEFER)
-- 
2.44.0