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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Board info for Acer X86 tablets which ship with Android as the factory image
* and which have broken DSDT tables. The factory kernels shipped on these
* devices typically have a bunch of things hardcoded, rather than specified
* in their DSDT.
*
* Copyright (C) 2021-2025 Hans de Goede <hansg@kernel.org>
*/
#include <linux/gpio/machine.h>
#include <linux/gpio/property.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include "shared-psy-info.h"
#include "x86-android-tablets.h"
/* Acer Iconia One 8 A1-840 (non FHD version) */
static const struct property_entry acer_a1_840_bq24190_props[] = {
PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node),
PROPERTY_ENTRY_BOOL("omit-battery-class"),
PROPERTY_ENTRY_BOOL("disable-reset"),
{ }
};
static const struct software_node acer_a1_840_bq24190_node = {
.properties = acer_a1_840_bq24190_props,
};
static const struct property_entry acer_a1_840_touchscreen_props[] = {
PROPERTY_ENTRY_U32("touchscreen-size-x", 800),
PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW),
{ }
};
static const struct software_node acer_a1_840_touchscreen_node = {
.properties = acer_a1_840_touchscreen_props,
};
static const struct x86_i2c_client_info acer_a1_840_i2c_clients[] __initconst = {
{
/* BQ24297 charger IC */
.board_info = {
.type = "bq24297",
.addr = 0x6b,
.dev_name = "bq24297",
.swnode = &acer_a1_840_bq24190_node,
.platform_data = &bq24190_pdata,
},
.adapter_path = "\\_SB_.I2C1",
.irq_data = {
.type = X86_ACPI_IRQ_TYPE_GPIOINT,
.chip = "INT33FC:02",
.index = 2,
.trigger = ACPI_EDGE_SENSITIVE,
.polarity = ACPI_ACTIVE_LOW,
.con_id = "bq24297_irq",
},
}, {
/* MPU6515 sensors */
.board_info = {
.type = "mpu6515",
.addr = 0x69,
.dev_name = "mpu6515",
},
.adapter_path = "\\_SB_.I2C3",
.irq_data = {
.type = X86_ACPI_IRQ_TYPE_APIC,
.index = 0x47,
.trigger = ACPI_EDGE_SENSITIVE,
.polarity = ACPI_ACTIVE_HIGH,
},
}, {
/* FT5416 touchscreen controller */
.board_info = {
.type = "edt-ft5x06",
.addr = 0x38,
.dev_name = "ft5416",
.swnode = &acer_a1_840_touchscreen_node,
},
.adapter_path = "\\_SB_.I2C4",
.irq_data = {
.type = X86_ACPI_IRQ_TYPE_APIC,
.index = 0x45,
.trigger = ACPI_EDGE_SENSITIVE,
.polarity = ACPI_ACTIVE_HIGH,
},
}
};
static const struct property_entry acer_a1_840_int3496_props[] __initconst = {
PROPERTY_ENTRY_GPIO("mux-gpios", &baytrail_gpiochip_nodes[2], 1, GPIO_ACTIVE_HIGH),
PROPERTY_ENTRY_GPIO("id-gpios", &baytrail_gpiochip_nodes[2], 18, GPIO_ACTIVE_HIGH),
{ }
};
static const struct platform_device_info acer_a1_840_pdevs[] __initconst = {
{
/* For micro USB ID pin handling */
.name = "intel-int3496",
.id = PLATFORM_DEVID_NONE,
.properties = acer_a1_840_int3496_props,
},
};
/* Properties for the Dollar Cove TI PMIC battery MFD child used as fuel-gauge */
static const struct property_entry acer_a1_840_fg_props[] = {
PROPERTY_ENTRY_REF("monitored-battery", &generic_lipo_4v2_battery_node),
PROPERTY_ENTRY_STRING_ARRAY_LEN("supplied-from", bq24190_psy, 1),
PROPERTY_ENTRY_GPIO("charged-gpios", &baytrail_gpiochip_nodes[2], 10, GPIO_ACTIVE_HIGH),
{ }
};
static struct device *acer_a1_840_fg_dev;
static struct fwnode_handle *acer_a1_840_fg_node;
static int __init acer_a1_840_init(struct device *dev)
{
int ret;
acer_a1_840_fg_dev = bus_find_device_by_name(&platform_bus_type, NULL, "chtdc_ti_battery");
if (!acer_a1_840_fg_dev)
return dev_err_probe(dev, -EPROBE_DEFER, "getting chtdc_ti_battery dev\n");
acer_a1_840_fg_node = fwnode_create_software_node(acer_a1_840_fg_props, NULL);
if (IS_ERR(acer_a1_840_fg_node)) {
ret = PTR_ERR(acer_a1_840_fg_node);
goto err_put;
}
ret = device_add_software_node(acer_a1_840_fg_dev,
to_software_node(acer_a1_840_fg_node));
if (ret)
goto err_put;
return 0;
err_put:
fwnode_handle_put(acer_a1_840_fg_node);
acer_a1_840_fg_node = NULL;
put_device(acer_a1_840_fg_dev);
acer_a1_840_fg_dev = NULL;
return ret;
}
static void acer_a1_840_exit(void)
{
device_remove_software_node(acer_a1_840_fg_dev);
/*
* Skip fwnode_handle_put(acer_a1_840_fg_node), instead leak the node.
* The intel_dc_ti_battery driver may still reference the strdup-ed
* "supplied-from" string. This string will be free-ed if the node
* is released.
*/
acer_a1_840_fg_node = NULL;
put_device(acer_a1_840_fg_dev);
acer_a1_840_fg_dev = NULL;
}
static const char * const acer_a1_840_modules[] __initconst = {
"bq24190_charger", /* For the Vbus regulator for intel-int3496 */
NULL
};
const struct x86_dev_info acer_a1_840_info __initconst = {
.i2c_client_info = acer_a1_840_i2c_clients,
.i2c_client_count = ARRAY_SIZE(acer_a1_840_i2c_clients),
.pdev_info = acer_a1_840_pdevs,
.pdev_count = ARRAY_SIZE(acer_a1_840_pdevs),
.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
.swnode_group = generic_lipo_4v2_battery_swnodes,
.modules = acer_a1_840_modules,
.init = acer_a1_840_init,
.exit = acer_a1_840_exit,
};
/* Acer Iconia One 7 B1-750 has an Android factory image with everything hardcoded */
static const char * const acer_b1_750_mount_matrix[] = {
"-1", "0", "0",
"0", "1", "0",
"0", "0", "1"
};
static const struct property_entry acer_b1_750_bma250e_props[] = {
PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", acer_b1_750_mount_matrix),
{ }
};
static const struct software_node acer_b1_750_bma250e_node = {
.properties = acer_b1_750_bma250e_props,
};
static const struct property_entry acer_b1_750_novatek_props[] = {
PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW),
{ }
};
static const struct software_node acer_b1_750_novatek_node = {
.properties = acer_b1_750_novatek_props,
};
static const struct x86_i2c_client_info acer_b1_750_i2c_clients[] __initconst = {
{
/* Novatek NVT-ts touchscreen */
.board_info = {
.type = "nt11205-ts",
.addr = 0x34,
.dev_name = "NVT-ts",
.swnode = &acer_b1_750_novatek_node,
},
.adapter_path = "\\_SB_.I2C4",
.irq_data = {
.type = X86_ACPI_IRQ_TYPE_GPIOINT,
.chip = "INT33FC:02",
.index = 3,
.trigger = ACPI_EDGE_SENSITIVE,
.polarity = ACPI_ACTIVE_LOW,
.con_id = "NVT-ts_irq",
},
}, {
/* BMA250E accelerometer */
.board_info = {
.type = "bma250e",
.addr = 0x18,
.swnode = &acer_b1_750_bma250e_node,
},
.adapter_path = "\\_SB_.I2C3",
.irq_data = {
.type = X86_ACPI_IRQ_TYPE_GPIOINT,
.chip = "INT33FC:02",
.index = 25,
.trigger = ACPI_LEVEL_SENSITIVE,
.polarity = ACPI_ACTIVE_HIGH,
.con_id = "bma250e_irq",
},
},
};
const struct x86_dev_info acer_b1_750_info __initconst = {
.i2c_client_info = acer_b1_750_i2c_clients,
.i2c_client_count = ARRAY_SIZE(acer_b1_750_i2c_clients),
.pdev_info = int3496_pdevs,
.pdev_count = 1,
.gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
};
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