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mmc: sdhci-pci: Add DMI quirk for missing CD GPIO on Vexia Edu Atla 10 tablet

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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@redhat.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Message-ID: <20241118210049.311079-1-hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Hans de Goede 2024-11-18 22:00:49 +01:00 committed by Ulf Hansson
parent 40384c840e
commit 7f0fa47cee
2 changed files with 73 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
drivers/mmc/host/sdhci-pci-core.c
View File

@ -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>
@ -1236,6 +1237,29 @@ 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,
@ -1254,6 +1278,7 @@ 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),
};
@ -2055,6 +2080,42 @@ 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;
size_t count;
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 = dmi_id->driver_data;
for (count = 0; cd_gpio_lookup_table->table[count].key; count++)
;
cd_gpio_lookup_table = kmemdup(dmi_id->driver_data,
/* count + 1 terminating entry */
struct_size(cd_gpio_lookup_table, table, count + 1),
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)
@ -2130,8 +2191,19 @@ 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,

1
drivers/mmc/host/sdhci-pci.h
View File

@ -157,6 +157,7 @@ struct sdhci_pci_fixes {
#endif
const struct sdhci_ops *ops;
const struct dmi_system_id *cd_gpio_override;
size_t priv_size;
};