| /* |
| * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <acpi/acpi_drivers.h> |
| |
| MODULE_LICENSE("GPL"); |
| |
| static ssize_t irst_show_wakeup_events(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct acpi_device *acpi; |
| struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; |
| union acpi_object *result; |
| acpi_status status; |
| |
| acpi = to_acpi_device(dev); |
| |
| status = acpi_evaluate_object(acpi->handle, "GFFS", NULL, &output); |
| if (!ACPI_SUCCESS(status)) |
| return -EINVAL; |
| |
| result = output.pointer; |
| |
| if (result->type != ACPI_TYPE_INTEGER) { |
| kfree(result); |
| return -EINVAL; |
| } |
| |
| return sprintf(buf, "%lld\n", result->integer.value); |
| } |
| |
| static ssize_t irst_store_wakeup_events(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi; |
| struct acpi_object_list input; |
| union acpi_object param; |
| acpi_status status; |
| unsigned long value; |
| int error; |
| |
| acpi = to_acpi_device(dev); |
| |
| error = kstrtoul(buf, 0, &value); |
| |
| if (error) |
| return error; |
| |
| param.type = ACPI_TYPE_INTEGER; |
| param.integer.value = value; |
| |
| input.count = 1; |
| input.pointer = ¶m; |
| |
| status = acpi_evaluate_object(acpi->handle, "SFFS", &input, NULL); |
| |
| if (!ACPI_SUCCESS(status)) |
| return -EINVAL; |
| |
| return count; |
| } |
| |
| static struct device_attribute irst_wakeup_attr = { |
| .attr = { .name = "wakeup_events", .mode = 0600 }, |
| .show = irst_show_wakeup_events, |
| .store = irst_store_wakeup_events |
| }; |
| |
| static ssize_t irst_show_wakeup_time(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct acpi_device *acpi; |
| struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; |
| union acpi_object *result; |
| acpi_status status; |
| |
| acpi = to_acpi_device(dev); |
| |
| status = acpi_evaluate_object(acpi->handle, "GFTV", NULL, &output); |
| if (!ACPI_SUCCESS(status)) |
| return -EINVAL; |
| |
| result = output.pointer; |
| |
| if (result->type != ACPI_TYPE_INTEGER) { |
| kfree(result); |
| return -EINVAL; |
| } |
| |
| return sprintf(buf, "%lld\n", result->integer.value); |
| } |
| |
| static ssize_t irst_store_wakeup_time(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct acpi_device *acpi; |
| struct acpi_object_list input; |
| union acpi_object param; |
| acpi_status status; |
| unsigned long value; |
| int error; |
| |
| acpi = to_acpi_device(dev); |
| |
| error = kstrtoul(buf, 0, &value); |
| |
| if (error) |
| return error; |
| |
| param.type = ACPI_TYPE_INTEGER; |
| param.integer.value = value; |
| |
| input.count = 1; |
| input.pointer = ¶m; |
| |
| status = acpi_evaluate_object(acpi->handle, "SFTV", &input, NULL); |
| |
| if (!ACPI_SUCCESS(status)) |
| return -EINVAL; |
| |
| return count; |
| } |
| |
| static struct device_attribute irst_timeout_attr = { |
| .attr = { .name = "wakeup_time", .mode = 0600 }, |
| .show = irst_show_wakeup_time, |
| .store = irst_store_wakeup_time |
| }; |
| |
| static int irst_add(struct acpi_device *acpi) |
| { |
| int error = 0; |
| |
| error = device_create_file(&acpi->dev, &irst_timeout_attr); |
| if (error) |
| goto out; |
| |
| error = device_create_file(&acpi->dev, &irst_wakeup_attr); |
| if (error) |
| goto out_timeout; |
| |
| return 0; |
| |
| out_timeout: |
| device_remove_file(&acpi->dev, &irst_timeout_attr); |
| out: |
| return error; |
| } |
| |
| static int irst_remove(struct acpi_device *acpi) |
| { |
| device_remove_file(&acpi->dev, &irst_wakeup_attr); |
| device_remove_file(&acpi->dev, &irst_timeout_attr); |
| |
| return 0; |
| } |
| |
| static const struct acpi_device_id irst_ids[] = { |
| {"INT3392", 0}, |
| {"", 0} |
| }; |
| |
| static struct acpi_driver irst_driver = { |
| .owner = THIS_MODULE, |
| .name = "intel_rapid_start", |
| .class = "intel_rapid_start", |
| .ids = irst_ids, |
| .ops = { |
| .add = irst_add, |
| .remove = irst_remove, |
| }, |
| }; |
| |
| module_acpi_driver(irst_driver); |
| |
| MODULE_DEVICE_TABLE(acpi, irst_ids); |