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 #include <linux/spi/spi.h> 18 19 struct gpio_desc; 20 struct gpiod_lookup_table; 21 struct platform_device_info; 22 struct software_node; 23 24 /* 25 * Helpers to get Linux IRQ numbers given a description of the IRQ source 26 * (either IOAPIC index, or GPIO chip name + pin-number). 27 */ 28 enum x86_acpi_irq_type { 29 X86_ACPI_IRQ_TYPE_NONE, 30 X86_ACPI_IRQ_TYPE_APIC, 31 X86_ACPI_IRQ_TYPE_GPIOINT, 32 X86_ACPI_IRQ_TYPE_PMIC, 33 }; 34 35 struct x86_acpi_irq_data { 36 char *chip; /* GPIO chip label (GPIOINT) or PMIC ACPI path (PMIC) */ 37 enum x86_acpi_irq_type type; 38 enum irq_domain_bus_token domain; 39 int index; 40 int trigger; /* ACPI_EDGE_SENSITIVE / ACPI_LEVEL_SENSITIVE */ 41 int polarity; /* ACPI_ACTIVE_HIGH / ACPI_ACTIVE_LOW / ACPI_ACTIVE_BOTH */ 42 bool free_gpio; /* Release GPIO after getting IRQ (for TYPE_GPIOINT) */ 43 const char *con_id; 44 }; 45 46 /* Structs to describe devices to instantiate */ 47 struct x86_i2c_client_info { 48 struct i2c_board_info board_info; 49 char *adapter_path; 50 struct x86_acpi_irq_data irq_data; 51 }; 52 53 struct x86_spi_dev_info { 54 struct spi_board_info board_info; 55 char *ctrl_path; 56 struct x86_acpi_irq_data irq_data; 57 }; 58 59 struct x86_serdev_info { 60 const char *ctrl_hid; 61 const char *ctrl_uid; 62 const char *ctrl_devname; 63 /* 64 * ATM the serdev core only supports of or ACPI matching; and so far all 65 * Android x86 tablets DSDTs have usable serdev nodes, but sometimes 66 * under the wrong controller. So we just tie the existing serdev ACPI 67 * node to the right controller. 68 */ 69 const char *serdev_hid; 70 }; 71 72 struct x86_gpio_button { 73 struct gpio_keys_button button; 74 const char *chip; 75 int pin; 76 }; 77 78 struct x86_dev_info { 79 const char * const *modules; 80 const struct software_node *bat_swnode; 81 struct gpiod_lookup_table * const *gpiod_lookup_tables; 82 const struct x86_i2c_client_info *i2c_client_info; 83 const struct x86_spi_dev_info *spi_dev_info; 84 const struct platform_device_info *pdev_info; 85 const struct x86_serdev_info *serdev_info; 86 const struct x86_gpio_button *gpio_button; 87 int i2c_client_count; 88 int spi_dev_count; 89 int pdev_count; 90 int serdev_count; 91 int gpio_button_count; 92 int (*init)(struct device *dev); 93 void (*exit)(void); 94 }; 95 96 int x86_android_tablet_get_gpiod(const char *chip, int pin, const char *con_id, 97 bool active_low, enum gpiod_flags dflags, 98 struct gpio_desc **desc); 99 int x86_acpi_irq_helper_get(const struct x86_acpi_irq_data *data); 100 101 /* 102 * Extern declarations of x86_dev_info structs so there can be a single 103 * MODULE_DEVICE_TABLE(dmi, ...), while splitting the board descriptions. 104 */ 105 extern const struct x86_dev_info acer_b1_750_info; 106 extern const struct x86_dev_info advantech_mica_071_info; 107 extern const struct x86_dev_info asus_me176c_info; 108 extern const struct x86_dev_info asus_tf103c_info; 109 extern const struct x86_dev_info chuwi_hi8_info; 110 extern const struct x86_dev_info cyberbook_t116_info; 111 extern const struct x86_dev_info czc_p10t; 112 extern const struct x86_dev_info lenovo_yogabook_x90_info; 113 extern const struct x86_dev_info lenovo_yogabook_x91_info; 114 extern const struct x86_dev_info lenovo_yoga_tab2_830_1050_info; 115 extern const struct x86_dev_info lenovo_yoga_tab2_1380_info; 116 extern const struct x86_dev_info lenovo_yt3_info; 117 extern const struct x86_dev_info medion_lifetab_s10346_info; 118 extern const struct x86_dev_info nextbook_ares8_info; 119 extern const struct x86_dev_info nextbook_ares8a_info; 120 extern const struct x86_dev_info peaq_c1010_info; 121 extern const struct x86_dev_info whitelabel_tm800a550l_info; 122 extern const struct x86_dev_info xiaomi_mipad2_info; 123 extern const struct dmi_system_id x86_android_tablet_ids[]; 124 125 #endif 126