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The Vexia EDU ATLA 10 tablet comes in 2 different versions with significantly different mainboards. The only outward difference is that the charging barrel on one is marked 5V and the other is marked 9V. Both are x86 ACPI tablets which ships with Android x86 as factory OS. with a DSDT which contains a bunch of I2C devices which are not actually there, causing various resource conflicts. Enumeration of these is skipped through the acpi_quirk_skip_i2c_client_enumeration(). Extend the existing support for the 9V version by adding support for manually instantiating the I2C devices which are actually present on the 5V version by adding the necessary device info to the x86-android-tablets module. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20250407092017.273124-2-hdegoede@redhat.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
135 lines
4.2 KiB
C
135 lines
4.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* DMI based code to deal with broken DSDTs on X86 tablets which ship with
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* Android as (part of) the factory image. The factory kernels shipped on these
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* devices typically have a bunch of things hardcoded, rather than specified
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* in their DSDT.
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*
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* Copyright (C) 2021-2023 Hans de Goede <hdegoede@redhat.com>
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*/
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#ifndef __PDX86_X86_ANDROID_TABLETS_H
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#define __PDX86_X86_ANDROID_TABLETS_H
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#include <linux/gpio/consumer.h>
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#include <linux/gpio_keys.h>
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#include <linux/i2c.h>
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#include <linux/irqdomain_defs.h>
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#include <linux/spi/spi.h>
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struct gpio_desc;
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struct gpiod_lookup_table;
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struct platform_device_info;
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struct software_node;
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/*
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* Helpers to get Linux IRQ numbers given a description of the IRQ source
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* (either IOAPIC index, or GPIO chip name + pin-number).
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*/
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enum x86_acpi_irq_type {
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X86_ACPI_IRQ_TYPE_NONE,
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X86_ACPI_IRQ_TYPE_APIC,
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X86_ACPI_IRQ_TYPE_GPIOINT,
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X86_ACPI_IRQ_TYPE_PMIC,
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};
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struct x86_acpi_irq_data {
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char *chip; /* GPIO chip label (GPIOINT) or PMIC ACPI path (PMIC) */
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enum x86_acpi_irq_type type;
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enum irq_domain_bus_token domain;
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int index;
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int trigger; /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */
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int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */
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bool free_gpio; /* Release GPIO after getting IRQ (for TYPE_GPIOINT) */
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const char *con_id;
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};
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/* Structs to describe devices to instantiate */
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struct x86_i2c_client_info {
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struct i2c_board_info board_info;
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char *adapter_path;
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struct x86_acpi_irq_data irq_data;
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};
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struct x86_spi_dev_info {
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struct spi_board_info board_info;
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char *ctrl_path;
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struct x86_acpi_irq_data irq_data;
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};
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struct x86_serdev_info {
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union {
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struct {
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const char *hid;
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const char *uid;
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} acpi;
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struct {
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unsigned int devfn;
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} pci;
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} ctrl;
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const char *ctrl_devname;
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/*
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* ATM the serdev core only supports of or ACPI matching; and so far all
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* Android x86 tablets DSDTs have usable serdev nodes, but sometimes
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* under the wrong controller. So we just tie the existing serdev ACPI
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* node to the right controller.
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*/
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const char *serdev_hid;
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};
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struct x86_gpio_button {
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struct gpio_keys_button button;
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const char *chip;
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int pin;
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};
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struct x86_dev_info {
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const char * const *modules;
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const struct software_node *bat_swnode;
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struct gpiod_lookup_table * const *gpiod_lookup_tables;
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const struct x86_i2c_client_info *i2c_client_info;
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const struct x86_spi_dev_info *spi_dev_info;
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const struct platform_device_info *pdev_info;
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const struct x86_serdev_info *serdev_info;
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const struct x86_gpio_button *gpio_button;
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int i2c_client_count;
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int spi_dev_count;
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int pdev_count;
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int serdev_count;
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int gpio_button_count;
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int (*init)(struct device *dev);
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void (*exit)(void);
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bool use_pci;
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};
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int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id,
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bool active_low, enum gpiod_flags dflags,
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struct gpio_desc **desc);
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int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data);
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/*
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* Extern declarations of x86_dev_info structs so there can be a single
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* MODULE_DEVICE_TABLE(dmi, ...), while splitting the board descriptions.
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*/
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extern const struct x86_dev_info acer_b1_750_info;
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extern const struct x86_dev_info advantech_mica_071_info;
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extern const struct x86_dev_info asus_me176c_info;
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extern const struct x86_dev_info asus_tf103c_info;
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extern const struct x86_dev_info chuwi_hi8_info;
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extern const struct x86_dev_info cyberbook_t116_info;
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extern const struct x86_dev_info czc_p10t;
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extern const struct x86_dev_info lenovo_yogabook_x90_info;
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extern const struct x86_dev_info lenovo_yogabook_x91_info;
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extern const struct x86_dev_info lenovo_yoga_tab2_830_1050_info;
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extern const struct x86_dev_info lenovo_yoga_tab2_1380_info;
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extern const struct x86_dev_info lenovo_yt3_info;
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extern const struct x86_dev_info medion_lifetab_s10346_info;
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extern const struct x86_dev_info nextbook_ares8_info;
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extern const struct x86_dev_info nextbook_ares8a_info;
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extern const struct x86_dev_info peaq_c1010_info;
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extern const struct x86_dev_info whitelabel_tm800a550l_info;
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extern const struct x86_dev_info vexia_edu_atla10_5v_info;
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extern const struct x86_dev_info vexia_edu_atla10_9v_info;
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extern const struct x86_dev_info xiaomi_mipad2_info;
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extern const struct dmi_system_id x86_android_tablet_ids[];
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#endif
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