diff options
Diffstat (limited to 'drivers/platform/x86/intel_cht_int33fe.c')
| -rw-r--r-- | drivers/platform/x86/intel_cht_int33fe.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c deleted file mode 100644 index da706e2c4232..000000000000 --- a/drivers/platform/x86/intel_cht_int33fe.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Intel Cherry Trail ACPI INT33FE pseudo device driver - * - * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Some Intel Cherry Trail based device which ship with Windows 10, have - * this weird INT33FE ACPI device with a CRS table with 4 I2cSerialBusV2 - * resources, for 4 different chips attached to various i2c busses: - * 1. The Whiskey Cove pmic, which is also described by the INT34D3 ACPI device - * 2. Maxim MAX17047 Fuel Gauge Controller - * 3. FUSB302 USB Type-C Controller - * 4. PI3USB30532 USB switch - * - * So this driver is a stub / pseudo driver whose only purpose is to - * instantiate i2c-clients for chips 2 - 4, so that standard i2c drivers - * for these chips can bind to the them. - */ - -#include <linux/acpi.h> -#include <linux/i2c.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/slab.h> - -#define EXPECTED_PTYPE 4 - -struct cht_int33fe_data { - struct i2c_client *max17047; - struct i2c_client *fusb302; - struct i2c_client *pi3usb30532; -}; - -static const char * const max17047_suppliers[] = { "bq24190-charger" }; - -static const struct property_entry max17047_props[] = { - PROPERTY_ENTRY_STRING_ARRAY("supplied-from", max17047_suppliers), - { } -}; - -static int cht_int33fe_probe(struct i2c_client *client) -{ - struct device *dev = &client->dev; - struct i2c_board_info board_info; - struct cht_int33fe_data *data; - unsigned long long ptyp; - acpi_status status; - int fusb302_irq; - - status = acpi_evaluate_integer(ACPI_HANDLE(dev), "PTYP", NULL, &ptyp); - if (ACPI_FAILURE(status)) { - dev_err(dev, "Error getting PTYPE\n"); - return -ENODEV; - } - - /* - * The same ACPI HID is used for different configurations check PTYP - * to ensure that we are dealing with the expected config. - */ - if (ptyp != EXPECTED_PTYPE) - return -ENODEV; - - /* The FUSB302 uses the irq at index 1 and is the only irq user */ - fusb302_irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 1); - if (fusb302_irq < 0) { - if (fusb302_irq != -EPROBE_DEFER) - dev_err(dev, "Error getting FUSB302 irq\n"); - return fusb302_irq; - } - - data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - memset(&board_info, 0, sizeof(board_info)); - strlcpy(board_info.type, "max17047", I2C_NAME_SIZE); - board_info.properties = max17047_props; - - data->max17047 = i2c_acpi_new_device(dev, 1, &board_info); - if (!data->max17047) - return -EPROBE_DEFER; /* Wait for the i2c-adapter to load */ - - memset(&board_info, 0, sizeof(board_info)); - strlcpy(board_info.type, "fusb302", I2C_NAME_SIZE); - board_info.irq = fusb302_irq; - - data->fusb302 = i2c_acpi_new_device(dev, 2, &board_info); - if (!data->fusb302) - goto out_unregister_max17047; - - memset(&board_info, 0, sizeof(board_info)); - strlcpy(board_info.type, "pi3usb30532", I2C_NAME_SIZE); - - data->pi3usb30532 = i2c_acpi_new_device(dev, 3, &board_info); - if (!data->pi3usb30532) - goto out_unregister_fusb302; - - i2c_set_clientdata(client, data); - - return 0; - -out_unregister_fusb302: - i2c_unregister_device(data->fusb302); - -out_unregister_max17047: - i2c_unregister_device(data->max17047); - - return -EPROBE_DEFER; /* Wait for the i2c-adapter to load */ -} - -static int cht_int33fe_remove(struct i2c_client *i2c) -{ - struct cht_int33fe_data *data = i2c_get_clientdata(i2c); - - i2c_unregister_device(data->pi3usb30532); - i2c_unregister_device(data->fusb302); - i2c_unregister_device(data->max17047); - - return 0; -} - -static const struct i2c_device_id cht_int33fe_i2c_id[] = { - { } -}; -MODULE_DEVICE_TABLE(i2c, cht_int33fe_i2c_id); - -static const struct acpi_device_id cht_int33fe_acpi_ids[] = { - { "INT33FE", }, - { } -}; -MODULE_DEVICE_TABLE(acpi, cht_int33fe_acpi_ids); - -static struct i2c_driver cht_int33fe_driver = { - .driver = { - .name = "Intel Cherry Trail ACPI INT33FE driver", - .acpi_match_table = ACPI_PTR(cht_int33fe_acpi_ids), - }, - .probe_new = cht_int33fe_probe, - .remove = cht_int33fe_remove, - .id_table = cht_int33fe_i2c_id, - .disable_i2c_core_irq_mapping = true, -}; - -module_i2c_driver(cht_int33fe_driver); - -MODULE_DESCRIPTION("Intel Cherry Trail ACPI INT33FE pseudo device driver"); -MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); -MODULE_LICENSE("GPL"); |