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author | Kate Hsuan <hpa@redhat.com> | 2021-08-20 14:04:47 +0300 |
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committer | Hans de Goede <hdegoede@redhat.com> | 2021-08-20 21:09:43 +0300 |
commit | e6596c22744e7c3058bc3ef843d1a6c20632e27f (patch) | |
tree | 93874c4fd9bec7e126730678bb3201c5bce59923 /drivers/platform/x86/intel/rst.c | |
parent | 2b6cb8f2e88b416393d2b34cad51bfe6e1aae8a7 (diff) | |
download | linux-e6596c22744e7c3058bc3ef843d1a6c20632e27f.tar.xz |
platform/x86: intel-rst: Move to intel sub-directory
Move Intel RST driver to intel sub-directory to improve readability
and rename it from intel-rst.c to rst.c.
Signed-off-by: Kate Hsuan <hpa@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210820110458.73018-10-andriy.shevchenko@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/intel/rst.c')
-rw-r--r-- | drivers/platform/x86/intel/rst.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel/rst.c b/drivers/platform/x86/intel/rst.c new file mode 100644 index 000000000000..3b81cb896fed --- /dev/null +++ b/drivers/platform/x86/intel/rst.c @@ -0,0 +1,142 @@ +// 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 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); |