The Vexia Edu Atla 10 tablet distributed to schools in the Spanish
Andalucía region has no ACPI fwnode associated with the SDHCI controller
for its microsd-slot and thus has no ACPI GPIO resource info.
This causes the following error to be logged and the slot to not work:
[ 10.572113] sdhci-pci 0000:00:12.0: failed to setup card detect gpio
Add a DMI quirk table for providing gpiod_lookup_tables with manually
provided CD GPIO info and use this DMI table to provide the CD GPIO info
on this tablet. This fixes the microsd-slot not working.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/mmc/host/sdhci-pci-core.c | 39 +++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index ed45ed0bdafd..eb9fb4ccd31b 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -11,6 +11,7 @@
#include <linux/bitfield.h>
#include <linux/string.h>
#include <linux/delay.h>
+#include <linux/dmi.h>
#include <linux/highmem.h>
#include <linux/module.h>
#include <linux/pci.h>
@@ -21,6 +22,7 @@
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
#include <linux/pm_runtime.h>
#include <linux/pm_qos.h>
#include <linux/debugfs.h>
@@ -2054,6 +2056,29 @@ static const struct dev_pm_ops sdhci_pci_pm_ops = {
* *
\*****************************************************************************/
+/* DMI quirks for devices with missing or broken CD GPIO info */
+static struct gpiod_lookup_table vexia_edu_atla10_cd_gpios = {
+ .dev_id = "0000:00:12.0",
+ .table = {
+ GPIO_LOOKUP("INT33FC:00", 38, "cd", GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
+
+const struct dmi_system_id sdhci_pci_dmi_cd_gpio_overrides[] = {
+ {
+ /* Vexia Edu Atla 10 tablet 9V version */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+ DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+ /* Above strings are too generic, also match on BIOS date */
+ DMI_MATCH(DMI_BIOS_DATE, "08/25/2014"),
+ },
+ .driver_data = (void *)&vexia_edu_atla10_cd_gpios,
+ },
+ { }
+};
+
static struct sdhci_pci_slot *sdhci_pci_probe_slot(
struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
int slotno)
@@ -2129,8 +2154,22 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
device_init_wakeup(&pdev->dev, true);
if (slot->cd_idx >= 0) {
+ struct gpiod_lookup_table *cd_gpio_lookup_table = NULL;
+ const struct dmi_system_id *dmi_id;
+
+ dmi_id = dmi_first_match(sdhci_pci_dmi_cd_gpio_overrides);
+ if (dmi_id)
+ cd_gpio_lookup_table = dmi_id->driver_data;
+
+ if (cd_gpio_lookup_table)
+ gpiod_add_lookup_table(cd_gpio_lookup_table);
+
ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx,
slot->cd_override_level, 0);
+
+ if (cd_gpio_lookup_table)
+ gpiod_remove_lookup_table(cd_gpio_lookup_table);
+
if (ret && ret != -EPROBE_DEFER)
ret = mmc_gpiod_request_cd(host->mmc, NULL,
slot->cd_idx,
--
2.47.0
