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/consumer.h> 14 #include <linux/gpio_keys.h> 15 #include <linux/i2c.h> 16 #include <linux/irqdomain_defs.h> 17 18 struct gpio_desc; 19 struct gpiod_lookup_table; 20 struct platform_device_info; 21 struct software_node; 22 23 /* 24 * Helpers to get Linux IRQ numbers given a description of the IRQ source 25 * (either IOAPIC index, or GPIO chip name + pin-number). 26 */ 27 enum x86_acpi_irq_type { 28 X86_ACPI_IRQ_TYPE_NONE, 29 X86_ACPI_IRQ_TYPE_APIC, 30 X86_ACPI_IRQ_TYPE_GPIOINT, 31 X86_ACPI_IRQ_TYPE_PMIC, 32 }; 33 34 struct x86_acpi_irq_data { 35 char *chip; /* GPIO chip label (GPIOINT) or PMIC ACPI path (PMIC) */ 36 enum x86_acpi_irq_type type; 37 enum irq_domain_bus_token domain; 38 int index; 39 int trigger; /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */ 40 int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */ 41 const char *con_id; 42 }; 43 44 /* Structs to describe devices to instantiate */ 45 struct x86_i2c_client_info { 46 struct i2c_board_info board_info; 47 char *adapter_path; 48 struct x86_acpi_irq_data irq_data; 49 }; 50 51 struct x86_serdev_info { 52 const char *ctrl_hid; 53 const char *ctrl_uid; 54 const char *ctrl_devname; 55 /* 56 * ATM the serdev core only supports of or ACPI matching; and sofar all 57 * Android x86 tablets DSDTs have usable serdev nodes, but sometimes 58 * under the wrong controller. So we just tie the existing serdev ACPI 59 * node to the right controller. 60 */ 61 const char *serdev_hid; 62 }; 63 64 struct x86_gpio_button { 65 struct gpio_keys_button button; 66 const char *chip; 67 int pin; 68 }; 69 70 struct x86_dev_info { 71 const char * const *modules; 72 const struct software_node *bat_swnode; 73 struct gpiod_lookup_table * const *gpiod_lookup_tables; 74 const struct x86_i2c_client_info *i2c_client_info; 75 const struct platform_device_info *pdev_info; 76 const struct x86_serdev_info *serdev_info; 77 const struct x86_gpio_button *gpio_button; 78 int i2c_client_count; 79 int pdev_count; 80 int serdev_count; 81 int gpio_button_count; 82 int (*init)(void); 83 void (*exit)(void); 84 }; 85 86 int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id, 87 bool active_low, enum gpiod_flags dflags, 88 struct gpio_desc **desc); 89 int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data); 90 91 /* 92 * Extern declarations of x86_dev_info structs so there can be a single 93 * MODULE_DEVICE_TABLE(dmi, ...), while splitting the board descriptions. 94 */ 95 extern const struct x86_dev_info acer_b1_750_info; 96 extern const struct x86_dev_info advantech_mica_071_info; 97 extern const struct x86_dev_info asus_me176c_info; 98 extern const struct x86_dev_info asus_tf103c_info; 99 extern const struct x86_dev_info chuwi_hi8_info; 100 extern const struct x86_dev_info cyberbook_t116_info; 101 extern const struct x86_dev_info czc_p10t; 102 extern const struct x86_dev_info lenovo_yogabook_x90_info; 103 extern const struct x86_dev_info lenovo_yogabook_x91_info; 104 extern const struct x86_dev_info lenovo_yoga_tab2_830_1050_info; 105 extern const struct x86_dev_info lenovo_yt3_info; 106 extern const struct x86_dev_info medion_lifetab_s10346_info; 107 extern const struct x86_dev_info nextbook_ares8_info; 108 extern const struct x86_dev_info nextbook_ares8a_info; 109 extern const struct x86_dev_info peaq_c1010_info; 110 extern const struct x86_dev_info whitelabel_tm800a550l_info; 111 extern const struct x86_dev_info xiaomi_mipad2_info; 112 extern const struct dmi_system_id x86_android_tablet_ids[]; 113 114 #endif 115