1 /* SPDX-License-Identifier: GPL-2.0-or-later 2 * 3 * DMI based code to deal with broken DSDTs on X86 tablets which ship with 4 * Android as (part of) the factory image. The factory kernels shipped on these 5 * devices typically have a bunch of things hardcoded, rather than specified 6 * in their DSDT. 7 * 8 * Copyright (C) 2021-2023 Hans de Goede <hdegoede@redhat.com> 9 */ 10 #ifndef __PDX86_X86_ANDROID_TABLETS_H 11 #define __PDX86_X86_ANDROID_TABLETS_H 12 13 #include <linux/gpio_keys.h> 14 #include <linux/i2c.h> 15 #include <linux/irqdomain_defs.h> 16 17 struct gpio_desc; 18 struct gpiod_lookup_table; 19 struct platform_device_info; 20 struct software_node; 21 22 /* 23 * Helpers to get Linux IRQ numbers given a description of the IRQ source 24 * (either IOAPIC index, or GPIO chip name + pin-number). 25 */ 26 enum x86_acpi_irq_type { 27 X86_ACPI_IRQ_TYPE_NONE, 28 X86_ACPI_IRQ_TYPE_APIC, 29 X86_ACPI_IRQ_TYPE_GPIOINT, 30 X86_ACPI_IRQ_TYPE_PMIC, 31 }; 32 33 struct x86_acpi_irq_data { 34 char *chip; /* GPIO chip label (GPIOINT) or PMIC ACPI path (PMIC) */ 35 enum x86_acpi_irq_type type; 36 enum irq_domain_bus_token domain; 37 int index; 38 int trigger; /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */ 39 int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */ 40 }; 41 42 /* Structs to describe devices to instantiate */ 43 struct x86_i2c_client_info { 44 struct i2c_board_info board_info; 45 char *adapter_path; 46 struct x86_acpi_irq_data irq_data; 47 }; 48 49 struct x86_serdev_info { 50 const char *ctrl_hid; 51 const char *ctrl_uid; 52 const char *ctrl_devname; 53 /* 54 * ATM the serdev core only supports of or ACPI matching; and sofar all 55 * Android x86 tablets DSDTs have usable serdev nodes, but sometimes 56 * under the wrong controller. So we just tie the existing serdev ACPI 57 * node to the right controller. 58 */ 59 const char *serdev_hid; 60 }; 61 62 struct x86_gpio_button { 63 struct gpio_keys_button button; 64 const char *chip; 65 int pin; 66 }; 67 68 struct x86_dev_info { 69 char *invalid_aei_gpiochip; 70 const char * const *modules; 71 const struct software_node *bat_swnode; 72 struct gpiod_lookup_table * const *gpiod_lookup_tables; 73 const struct x86_i2c_client_info *i2c_client_info; 74 const struct platform_device_info *pdev_info; 75 const struct x86_serdev_info *serdev_info; 76 struct x86_gpio_button *gpio_button; 77 int i2c_client_count; 78 int pdev_count; 79 int serdev_count; 80 int (*init)(void); 81 void (*exit)(void); 82 }; 83 84 int x86_android_tablet_get_gpiod(const char *label, int pin, struct gpio_desc **desc); 85 int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data); 86 87 /* 88 * Extern declarations of x86_dev_info structs so there can be a single 89 * MODULE_DEVICE_TABLE(dmi, ...), while splitting the board descriptions. 90 */ 91 extern const struct x86_dev_info acer_b1_750_info; 92 extern const struct x86_dev_info advantech_mica_071_info; 93 extern const struct x86_dev_info asus_me176c_info; 94 extern const struct x86_dev_info asus_tf103c_info; 95 extern const struct x86_dev_info chuwi_hi8_info; 96 extern const struct x86_dev_info czc_p10t; 97 extern const struct x86_dev_info lenovo_yogabook_x90_info; 98 extern const struct x86_dev_info lenovo_yogabook_x91_info; 99 extern const struct x86_dev_info lenovo_yoga_tab2_830_1050_info; 100 extern const struct x86_dev_info lenovo_yt3_info; 101 extern const struct x86_dev_info medion_lifetab_s10346_info; 102 extern const struct x86_dev_info nextbook_ares8_info; 103 extern const struct x86_dev_info peaq_c1010_info; 104 extern const struct x86_dev_info whitelabel_tm800a550l_info; 105 extern const struct x86_dev_info xiaomi_mipad2_info; 106 extern const struct dmi_system_id x86_android_tablet_ids[]; 107 108 #endif 109