1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Board info for Acer X86 tablets which ship with Android as the factory image 4 * and which have broken DSDT tables. 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) 2021-2025 Hans de Goede <hansg@kernel.org> 9 */ 10 11 #include <linux/gpio/machine.h> 12 #include <linux/gpio/property.h> 13 #include <linux/platform_device.h> 14 #include <linux/property.h> 15 16 #include "shared-psy-info.h" 17 #include "x86-android-tablets.h" 18 19 /* Acer Iconia One 8 A1-840 (non FHD version) */ 20 static const struct property_entry acer_a1_840_bq24190_props[] = { 21 PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node), 22 PROPERTY_ENTRY_BOOL("omit-battery-class"), 23 PROPERTY_ENTRY_BOOL("disable-reset"), 24 { } 25 }; 26 27 static const struct software_node acer_a1_840_bq24190_node = { 28 .properties = acer_a1_840_bq24190_props, 29 }; 30 31 static const struct property_entry acer_a1_840_touchscreen_props[] = { 32 PROPERTY_ENTRY_U32("touchscreen-size-x", 800), 33 PROPERTY_ENTRY_U32("touchscreen-size-y", 1280), 34 PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW), 35 { } 36 }; 37 38 static const struct software_node acer_a1_840_touchscreen_node = { 39 .properties = acer_a1_840_touchscreen_props, 40 }; 41 42 static const struct x86_i2c_client_info acer_a1_840_i2c_clients[] __initconst = { 43 { 44 /* BQ24297 charger IC */ 45 .board_info = { 46 .type = "bq24297", 47 .addr = 0x6b, 48 .dev_name = "bq24297", 49 .swnode = &acer_a1_840_bq24190_node, 50 .platform_data = &bq24190_pdata, 51 }, 52 .adapter_path = "\\_SB_.I2C1", 53 .irq_data = { 54 .type = X86_ACPI_IRQ_TYPE_GPIOINT, 55 .chip = "INT33FC:02", 56 .index = 2, 57 .trigger = ACPI_EDGE_SENSITIVE, 58 .polarity = ACPI_ACTIVE_LOW, 59 .con_id = "bq24297_irq", 60 }, 61 }, { 62 /* MPU6515 sensors */ 63 .board_info = { 64 .type = "mpu6515", 65 .addr = 0x69, 66 .dev_name = "mpu6515", 67 }, 68 .adapter_path = "\\_SB_.I2C3", 69 .irq_data = { 70 .type = X86_ACPI_IRQ_TYPE_APIC, 71 .index = 0x47, 72 .trigger = ACPI_EDGE_SENSITIVE, 73 .polarity = ACPI_ACTIVE_HIGH, 74 }, 75 }, { 76 /* FT5416 touchscreen controller */ 77 .board_info = { 78 .type = "edt-ft5x06", 79 .addr = 0x38, 80 .dev_name = "ft5416", 81 .swnode = &acer_a1_840_touchscreen_node, 82 }, 83 .adapter_path = "\\_SB_.I2C4", 84 .irq_data = { 85 .type = X86_ACPI_IRQ_TYPE_APIC, 86 .index = 0x45, 87 .trigger = ACPI_EDGE_SENSITIVE, 88 .polarity = ACPI_ACTIVE_HIGH, 89 }, 90 } 91 }; 92 93 static const struct property_entry acer_a1_840_int3496_props[] __initconst = { 94 PROPERTY_ENTRY_GPIO("mux-gpios", &baytrail_gpiochip_nodes[2], 1, GPIO_ACTIVE_HIGH), 95 PROPERTY_ENTRY_GPIO("id-gpios", &baytrail_gpiochip_nodes[2], 18, GPIO_ACTIVE_HIGH), 96 { } 97 }; 98 99 static const struct platform_device_info acer_a1_840_pdevs[] __initconst = { 100 { 101 /* For micro USB ID pin handling */ 102 .name = "intel-int3496", 103 .id = PLATFORM_DEVID_NONE, 104 .properties = acer_a1_840_int3496_props, 105 }, 106 }; 107 108 /* Properties for the Dollar Cove TI PMIC battery MFD child used as fuel-gauge */ 109 static const struct property_entry acer_a1_840_fg_props[] = { 110 PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node), 111 PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", bq24190_psy, 1), 112 PROPERTY_ENTRY_GPIO("charged-gpios", &baytrail_gpiochip_nodes[2], 10, GPIO_ACTIVE_HIGH), 113 { } 114 }; 115 116 static struct device *acer_a1_840_fg_dev; 117 static struct fwnode_handle *acer_a1_840_fg_node; 118 119 static int __init acer_a1_840_init(struct device *dev) 120 { 121 int ret; 122 123 acer_a1_840_fg_dev = bus_find_device_by_name(&platform_bus_type, NULL, "chtdc_ti_battery"); 124 if (!acer_a1_840_fg_dev) 125 return dev_err_probe(dev, -EPROBE_DEFER, "getting chtdc_ti_battery dev\n"); 126 127 acer_a1_840_fg_node = fwnode_create_software_node(acer_a1_840_fg_props, NULL); 128 if (IS_ERR(acer_a1_840_fg_node)) { 129 ret = PTR_ERR(acer_a1_840_fg_node); 130 goto err_put; 131 } 132 133 ret = device_add_software_node(acer_a1_840_fg_dev, 134 to_software_node(acer_a1_840_fg_node)); 135 if (ret) 136 goto err_put; 137 138 return 0; 139 140 err_put: 141 fwnode_handle_put(acer_a1_840_fg_node); 142 acer_a1_840_fg_node = NULL; 143 put_device(acer_a1_840_fg_dev); 144 acer_a1_840_fg_dev = NULL; 145 return ret; 146 } 147 148 static void acer_a1_840_exit(void) 149 { 150 device_remove_software_node(acer_a1_840_fg_dev); 151 /* 152 * Skip fwnode_handle_put(acer_a1_840_fg_node), instead leak the node. 153 * The intel_dc_ti_battery driver may still reference the strdup-ed 154 * "supplied-from" string. This string will be free-ed if the node 155 * is released. 156 */ 157 acer_a1_840_fg_node = NULL; 158 put_device(acer_a1_840_fg_dev); 159 acer_a1_840_fg_dev = NULL; 160 } 161 162 static const char * const acer_a1_840_modules[] __initconst = { 163 "bq24190_charger", /* For the Vbus regulator for intel-int3496 */ 164 NULL 165 }; 166 167 const struct x86_dev_info acer_a1_840_info __initconst = { 168 .i2c_client_info = acer_a1_840_i2c_clients, 169 .i2c_client_count = ARRAY_SIZE(acer_a1_840_i2c_clients), 170 .pdev_info = acer_a1_840_pdevs, 171 .pdev_count = ARRAY_SIZE(acer_a1_840_pdevs), 172 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL, 173 .swnode_group = generic_lipo_4v2_battery_swnodes, 174 .modules = acer_a1_840_modules, 175 .init = acer_a1_840_init, 176 .exit = acer_a1_840_exit, 177 }; 178 179 /* Acer Iconia One 7 B1-750 has an Android factory image with everything hardcoded */ 180 static const char * const acer_b1_750_mount_matrix[] = { 181 "-1", "0", "0", 182 "0", "1", "0", 183 "0", "0", "1" 184 }; 185 186 static const struct property_entry acer_b1_750_bma250e_props[] = { 187 PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", acer_b1_750_mount_matrix), 188 { } 189 }; 190 191 static const struct software_node acer_b1_750_bma250e_node = { 192 .properties = acer_b1_750_bma250e_props, 193 }; 194 195 static const struct property_entry acer_b1_750_novatek_props[] = { 196 PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW), 197 { } 198 }; 199 200 static const struct software_node acer_b1_750_novatek_node = { 201 .properties = acer_b1_750_novatek_props, 202 }; 203 204 static const struct x86_i2c_client_info acer_b1_750_i2c_clients[] __initconst = { 205 { 206 /* Novatek NVT-ts touchscreen */ 207 .board_info = { 208 .type = "nt11205-ts", 209 .addr = 0x34, 210 .dev_name = "NVT-ts", 211 .swnode = &acer_b1_750_novatek_node, 212 }, 213 .adapter_path = "\\_SB_.I2C4", 214 .irq_data = { 215 .type = X86_ACPI_IRQ_TYPE_GPIOINT, 216 .chip = "INT33FC:02", 217 .index = 3, 218 .trigger = ACPI_EDGE_SENSITIVE, 219 .polarity = ACPI_ACTIVE_LOW, 220 .con_id = "NVT-ts_irq", 221 }, 222 }, { 223 /* BMA250E accelerometer */ 224 .board_info = { 225 .type = "bma250e", 226 .addr = 0x18, 227 .swnode = &acer_b1_750_bma250e_node, 228 }, 229 .adapter_path = "\\_SB_.I2C3", 230 .irq_data = { 231 .type = X86_ACPI_IRQ_TYPE_GPIOINT, 232 .chip = "INT33FC:02", 233 .index = 25, 234 .trigger = ACPI_LEVEL_SENSITIVE, 235 .polarity = ACPI_ACTIVE_HIGH, 236 .con_id = "bma250e_irq", 237 }, 238 }, 239 }; 240 241 const struct x86_dev_info acer_b1_750_info __initconst = { 242 .i2c_client_info = acer_b1_750_i2c_clients, 243 .i2c_client_count = ARRAY_SIZE(acer_b1_750_i2c_clients), 244 .pdev_info = int3496_pdevs, 245 .pdev_count = 1, 246 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL, 247 }; 248