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>
---
Changes in v3:
- Add a cd_gpio_override pointer to sdhci_pci_fixes
- Add sdhci_pci_add_gpio_lookup_table() helper which kmemdup-s a const
struct gpiod_lookup_table to avoid races when using async probing
Changes in v2:
- Make sdhci_pci_dmi_cd_gpio_overrides static const instead of just const
- Drop duplicate #include <linux/dmi.h> (already there at the end)
---
drivers/mmc/host/sdhci-pci-core.c | 67 +++++++++++++++++++++++++++++++
drivers/mmc/host/sdhci-pci.h | 1 +
2 files changed, 68 insertions(+)
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index ed45ed0bdafd..a2ddbe3d8742 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -21,6 +21,7 @@
#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>
@@ -1235,6 +1236,29 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
.priv_size = sizeof(struct intel_host),
};
+/* DMI quirks for devices with missing or broken CD GPIO info */
+static const 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),
+ { }
+ },
+};
+
+static const struct dmi_system_id sdhci_intel_byt_cd_gpio_override[] = {
+ {
+ /* 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 const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
#ifdef CONFIG_PM_SLEEP
.resume = byt_resume,
@@ -1253,6 +1277,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
.add_host = byt_add_host,
.remove_slot = byt_remove_slot,
.ops = &sdhci_intel_byt_ops,
+ .cd_gpio_override = sdhci_intel_byt_cd_gpio_override,
.priv_size = sizeof(struct intel_host),
};
@@ -2054,6 +2079,37 @@ static const struct dev_pm_ops sdhci_pci_pm_ops = {
* *
\*****************************************************************************/
+static struct gpiod_lookup_table *sdhci_pci_add_gpio_lookup_table(
+ struct sdhci_pci_chip *chip)
+{
+ struct gpiod_lookup_table *cd_gpio_lookup_table;
+ const struct dmi_system_id *dmi_id = NULL;
+
+ if (chip->fixes && chip->fixes->cd_gpio_override)
+ dmi_id = dmi_first_match(chip->fixes->cd_gpio_override);
+
+ if (!dmi_id)
+ return NULL;
+
+ cd_gpio_lookup_table = kmemdup(dmi_id->driver_data,
+ /* 1 GPIO lookup entry + 1 terminating entry */
+ struct_size(cd_gpio_lookup_table, table, 2),
+ GFP_KERNEL);
+ if (!cd_gpio_lookup_table)
+ return ERR_PTR(-ENOMEM);
+
+ gpiod_add_lookup_table(cd_gpio_lookup_table);
+ return cd_gpio_lookup_table;
+}
+
+static void sdhci_pci_remove_gpio_lookup_table(struct gpiod_lookup_table *lookup_table)
+{
+ if (lookup_table) {
+ gpiod_remove_lookup_table(lookup_table);
+ kfree(lookup_table);
+ }
+}
+
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 +2185,19 @@ 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;
+
+ cd_gpio_lookup_table = sdhci_pci_add_gpio_lookup_table(chip);
+ if (IS_ERR(cd_gpio_lookup_table)) {
+ ret = PTR_ERR(cd_gpio_lookup_table);
+ goto remove;
+ }
+
ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx,
slot->cd_override_level, 0);
+
+ sdhci_pci_remove_gpio_lookup_table(cd_gpio_lookup_table);
+
if (ret && ret != -EPROBE_DEFER)
ret = mmc_gpiod_request_cd(host->mmc, NULL,
slot->cd_idx,
diff --git a/drivers/mmc/host/sdhci-pci.h b/drivers/mmc/host/sdhci-pci.h
index 153704f812ed..4973fa859217 100644
--- a/drivers/mmc/host/sdhci-pci.h
+++ b/drivers/mmc/host/sdhci-pci.h
@@ -156,6 +156,7 @@ struct sdhci_pci_fixes {
#endif
const struct sdhci_ops *ops;
+ const struct dmi_system_id *cd_gpio_override;
size_t priv_size;
};
--
2.47.0
