From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/platform/x86/intel/rst.c | 142 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 drivers/platform/x86/intel/rst.c (limited to 'drivers/platform/x86/intel/rst.c') diff --git a/drivers/platform/x86/intel/rst.c b/drivers/platform/x86/intel/rst.c new file mode 100644 index 000000000..3b81cb896 --- /dev/null +++ b/drivers/platform/x86/intel/rst.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2013 Matthew Garrett + */ + +#include +#include +#include + +MODULE_LICENSE("GPL"); + +static ssize_t irst_show_wakeup_events(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct acpi_device *acpi; + unsigned long long value; + acpi_status status; + + acpi = to_acpi_device(dev); + + status = acpi_evaluate_integer(acpi->handle, "GFFS", NULL, &value); + if (ACPI_FAILURE(status)) + return -EINVAL; + + return sprintf(buf, "%lld\n", 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; + acpi_status status; + unsigned long value; + int error; + + acpi = to_acpi_device(dev); + + error = kstrtoul(buf, 0, &value); + if (error) + return error; + + status = acpi_execute_simple_method(acpi->handle, "SFFS", value); + if (ACPI_FAILURE(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; + unsigned long long value; + acpi_status status; + + acpi = to_acpi_device(dev); + + status = acpi_evaluate_integer(acpi->handle, "GFTV", NULL, &value); + if (ACPI_FAILURE(status)) + return -EINVAL; + + return sprintf(buf, "%lld\n", 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; + acpi_status status; + unsigned long value; + int error; + + acpi = to_acpi_device(dev); + + error = kstrtoul(buf, 0, &value); + if (error) + return error; + + status = acpi_execute_simple_method(acpi->handle, "SFTV", value); + if (ACPI_FAILURE(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; + + error = device_create_file(&acpi->dev, &irst_timeout_attr); + if (unlikely(error)) + return error; + + error = device_create_file(&acpi->dev, &irst_wakeup_attr); + if (unlikely(error)) + device_remove_file(&acpi->dev, &irst_timeout_attr); + + 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); -- cgit v1.2.3