58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
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#include <linux/kernel.h>
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#include <linux/acpi.h>
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#include <linux/debugfs.h>
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#include "internal.h"
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MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
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MODULE_DESCRIPTION("ACPI EC sysfs access driver");
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MODULE_LICENSE("GPL");
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struct sysdev_class acpi_ec_sysdev_class = {
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.name = "ec",
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};
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static struct dentry *acpi_ec_debugfs_dir;
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int acpi_ec_add_debugfs(struct acpi_ec *ec, unsigned int ec_device_count)
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{
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struct dentry *dev_dir;
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char name[64];
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if (ec_device_count == 0) {
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acpi_ec_debugfs_dir = debugfs_create_dir("ec", NULL);
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if (!acpi_ec_debugfs_dir)
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return -ENOMEM;
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}
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sprintf(name, "ec%u", ec_device_count);
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dev_dir = debugfs_create_dir(name, acpi_ec_debugfs_dir);
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if (!dev_dir) {
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if (ec_device_count == 0)
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debugfs_remove_recursive(acpi_ec_debugfs_dir);
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/* TBD: Proper cleanup for multiple ECs */
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return -ENOMEM;
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}
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debugfs_create_x32("gpe", 0444, dev_dir, (u32 *)&first_ec->gpe);
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debugfs_create_bool("use_global_lock", 0444, dev_dir,
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(u32 *)&first_ec->global_lock);
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return 0;
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}
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static int __init acpi_ec_sys_init(void)
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{
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int err = 0;
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if (first_ec)
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err = acpi_ec_add_debugfs(first_ec, 0);
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else
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err = -ENODEV;
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return err;
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}
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static void __exit acpi_ec_sys_exit(void)
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{
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debugfs_remove_recursive(acpi_ec_debugfs_dir);
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}
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module_init(acpi_ec_sys_init);
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module_exit(acpi_ec_sys_exit);
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