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/* SPDX-License-Identifier: GPL-2.0-or-later
*
* DMI based code to deal with broken DSDTs on X86 tablets which ship with
* Android as (part of) the factory image. The factory kernels shipped on these
* devices typically have a bunch of things hardcoded, rather than specified
* in their DSDT.
*
* Copyright (C) 2021-2023 Hans de Goede <hdegoede@redhat.com>
*/
#ifndef __PDX86_X86_ANDROID_TABLETS_H
#define __PDX86_X86_ANDROID_TABLETS_H
#include <linux/gpio/consumer.h>
#include <linux/gpio_keys.h>
#include <linux/i2c.h>
#include <linux/irqdomain_defs.h>
#include <linux/spi/spi.h>
struct gpio_desc;
struct gpiod_lookup_table;
struct platform_device_info;
struct software_node;
/*
* Helpers to get Linux IRQ numbers given a description of the IRQ source
* (either IOAPIC index, or GPIO chip name + pin-number).
*/
enum x86_acpi_irq_type {
X86_ACPI_IRQ_TYPE_NONE,
X86_ACPI_IRQ_TYPE_APIC,
X86_ACPI_IRQ_TYPE_GPIOINT,
X86_ACPI_IRQ_TYPE_PMIC,
};
struct x86_acpi_irq_data {
char *chip; /* GPIO chip label (GPIOINT) or PMIC ACPI path (PMIC) */
enum x86_acpi_irq_type type;
enum irq_domain_bus_token domain;
int index;
int trigger; /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */
int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */
bool free_gpio; /* Release GPIO after getting IRQ (for TYPE_GPIOINT) */
const char *con_id;
};
/* Structs to describe devices to instantiate */
struct x86_i2c_client_info {
struct i2c_board_info board_info;
char *adapter_path;
struct x86_acpi_irq_data irq_data;
};
struct x86_spi_dev_info {
struct spi_board_info board_info;
char *ctrl_path;
struct x86_acpi_irq_data irq_data;
};
struct x86_serdev_info {
const char *ctrl_hid;
const char *ctrl_uid;
const char *ctrl_devname;
/*
* ATM the serdev core only supports of or ACPI matching; and sofar all
* Android x86 tablets DSDTs have usable serdev nodes, but sometimes
* under the wrong controller. So we just tie the existing serdev ACPI
* node to the right controller.
*/
const char *serdev_hid;
};
struct x86_gpio_button {
struct gpio_keys_button button;
const char *chip;
int pin;
};
struct x86_dev_info {
const char * const *modules;
const struct software_node *bat_swnode;
struct gpiod_lookup_table * const *gpiod_lookup_tables;
const struct x86_i2c_client_info *i2c_client_info;
const struct x86_spi_dev_info *spi_dev_info;
const struct platform_device_info *pdev_info;
const struct x86_serdev_info *serdev_info;
const struct x86_gpio_button *gpio_button;
int i2c_client_count;
int spi_dev_count;
int pdev_count;
int serdev_count;
int gpio_button_count;
int (*init)(void);
void (*exit)(void);
};
int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id,
bool active_low, enum gpiod_flags dflags,
struct gpio_desc **desc);
int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data);
/*
* Extern declarations of x86_dev_info structs so there can be a single
* MODULE_DEVICE_TABLE(dmi, ...), while splitting the board descriptions.
*/
extern const struct x86_dev_info acer_b1_750_info;
extern const struct x86_dev_info advantech_mica_071_info;
extern const struct x86_dev_info asus_me176c_info;
extern const struct x86_dev_info asus_tf103c_info;
extern const struct x86_dev_info chuwi_hi8_info;
extern const struct x86_dev_info cyberbook_t116_info;
extern const struct x86_dev_info czc_p10t;
extern const struct x86_dev_info lenovo_yogabook_x90_info;
extern const struct x86_dev_info lenovo_yogabook_x91_info;
extern const struct x86_dev_info lenovo_yoga_tab2_830_1050_info;
extern const struct x86_dev_info lenovo_yt3_info;
extern const struct x86_dev_info medion_lifetab_s10346_info;
extern const struct x86_dev_info nextbook_ares8_info;
extern const struct x86_dev_info nextbook_ares8a_info;
extern const struct x86_dev_info peaq_c1010_info;
extern const struct x86_dev_info whitelabel_tm800a550l_info;
extern const struct x86_dev_info xiaomi_mipad2_info;
extern const struct dmi_system_id x86_android_tablet_ids[];
#endif
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