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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2013 Matthew Garrett <mjg59@srcf.ucam.org> */ #include <linux/acpi.h> #include <linux/module.h> #include <linux/slab.h> 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 void irst_remove(struct acpi_device *acpi) { device_remove_file(&acpi->dev, &irst_wakeup_attr); device_remove_file(&acpi->dev, &irst_timeout_attr); } 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); |