diff options
Diffstat (limited to 'drivers/platform/x86/tc1100-wmi.c')
| -rw-r--r-- | drivers/platform/x86/tc1100-wmi.c | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/drivers/platform/x86/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c deleted file mode 100644 index ded26213c420..000000000000 --- a/drivers/platform/x86/tc1100-wmi.c +++ /dev/null @@ -1,265 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * HP Compaq TC1100 Tablet WMI Extras Driver - * - * Copyright (C) 2007 Carlos Corbacho <carlos@strangeworlds.co.uk> - * Copyright (C) 2004 Jamey Hicks <jamey.hicks@hp.com> - * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> - * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/acpi.h> -#include <linux/platform_device.h> - -#define GUID "C364AC71-36DB-495A-8494-B439D472A505" - -#define TC1100_INSTANCE_WIRELESS 1 -#define TC1100_INSTANCE_JOGDIAL 2 - -MODULE_AUTHOR("Jamey Hicks, Carlos Corbacho"); -MODULE_DESCRIPTION("HP Compaq TC1100 Tablet WMI Extras"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("wmi:C364AC71-36DB-495A-8494-B439D472A505"); - -static struct platform_device *tc1100_device; - -struct tc1100_data { - u32 wireless; - u32 jogdial; -}; - -#ifdef CONFIG_PM -static struct tc1100_data suspend_data; -#endif - -/* -------------------------------------------------------------------------- - Device Management - -------------------------------------------------------------------------- */ - -static int get_state(u32 *out, u8 instance) -{ - u32 tmp; - acpi_status status; - struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - - if (!out) - return -EINVAL; - - if (instance > 2) - return -ENODEV; - - status = wmi_query_block(GUID, instance, &result); - if (ACPI_FAILURE(status)) - return -ENODEV; - - obj = (union acpi_object *) result.pointer; - if (obj && obj->type == ACPI_TYPE_INTEGER) { - tmp = obj->integer.value; - } else { - tmp = 0; - } - - if (result.length > 0) - kfree(result.pointer); - - switch (instance) { - case TC1100_INSTANCE_WIRELESS: - *out = (tmp == 3) ? 1 : 0; - return 0; - case TC1100_INSTANCE_JOGDIAL: - *out = (tmp == 1) ? 0 : 1; - return 0; - default: - return -ENODEV; - } -} - -static int set_state(u32 *in, u8 instance) -{ - u32 value; - acpi_status status; - struct acpi_buffer input; - - if (!in) - return -EINVAL; - - if (instance > 2) - return -ENODEV; - - switch (instance) { - case TC1100_INSTANCE_WIRELESS: - value = (*in) ? 1 : 2; - break; - case TC1100_INSTANCE_JOGDIAL: - value = (*in) ? 0 : 1; - break; - default: - return -ENODEV; - } - - input.length = sizeof(u32); - input.pointer = &value; - - status = wmi_set_block(GUID, instance, &input); - if (ACPI_FAILURE(status)) - return -ENODEV; - - return 0; -} - -/* -------------------------------------------------------------------------- - FS Interface (/sys) - -------------------------------------------------------------------------- */ - -/* - * Read/ write bool sysfs macro - */ -#define show_set_bool(value, instance) \ -static ssize_t \ -show_bool_##value(struct device *dev, struct device_attribute *attr, \ - char *buf) \ -{ \ - u32 result; \ - acpi_status status = get_state(&result, instance); \ - if (ACPI_SUCCESS(status)) \ - return sprintf(buf, "%d\n", result); \ - return sprintf(buf, "Read error\n"); \ -} \ -\ -static ssize_t \ -set_bool_##value(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t count) \ -{ \ - u32 tmp = simple_strtoul(buf, NULL, 10); \ - acpi_status status = set_state(&tmp, instance); \ - if (ACPI_FAILURE(status)) \ - return -EINVAL; \ - return count; \ -} \ -static DEVICE_ATTR(value, S_IRUGO | S_IWUSR, \ - show_bool_##value, set_bool_##value); - -show_set_bool(wireless, TC1100_INSTANCE_WIRELESS); -show_set_bool(jogdial, TC1100_INSTANCE_JOGDIAL); - -static struct attribute *tc1100_attributes[] = { - &dev_attr_wireless.attr, - &dev_attr_jogdial.attr, - NULL -}; - -static const struct attribute_group tc1100_attribute_group = { - .attrs = tc1100_attributes, -}; - -/* -------------------------------------------------------------------------- - Driver Model - -------------------------------------------------------------------------- */ - -static int __init tc1100_probe(struct platform_device *device) -{ - return sysfs_create_group(&device->dev.kobj, &tc1100_attribute_group); -} - - -static int tc1100_remove(struct platform_device *device) -{ - sysfs_remove_group(&device->dev.kobj, &tc1100_attribute_group); - - return 0; -} - -#ifdef CONFIG_PM -static int tc1100_suspend(struct device *dev) -{ - int ret; - - ret = get_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS); - if (ret) - return ret; - - ret = get_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL); - if (ret) - return ret; - - return 0; -} - -static int tc1100_resume(struct device *dev) -{ - int ret; - - ret = set_state(&suspend_data.wireless, TC1100_INSTANCE_WIRELESS); - if (ret) - return ret; - - ret = set_state(&suspend_data.jogdial, TC1100_INSTANCE_JOGDIAL); - if (ret) - return ret; - - return 0; -} - -static const struct dev_pm_ops tc1100_pm_ops = { - .suspend = tc1100_suspend, - .resume = tc1100_resume, - .freeze = tc1100_suspend, - .restore = tc1100_resume, -}; -#endif - -static struct platform_driver tc1100_driver = { - .driver = { - .name = "tc1100-wmi", -#ifdef CONFIG_PM - .pm = &tc1100_pm_ops, -#endif - }, - .remove = tc1100_remove, -}; - -static int __init tc1100_init(void) -{ - int error; - - if (!wmi_has_guid(GUID)) - return -ENODEV; - - tc1100_device = platform_device_alloc("tc1100-wmi", PLATFORM_DEVID_NONE); - if (!tc1100_device) - return -ENOMEM; - - error = platform_device_add(tc1100_device); - if (error) - goto err_device_put; - - error = platform_driver_probe(&tc1100_driver, tc1100_probe); - if (error) - goto err_device_del; - - pr_info("HP Compaq TC1100 Tablet WMI Extras loaded\n"); - return 0; - - err_device_del: - platform_device_del(tc1100_device); - err_device_put: - platform_device_put(tc1100_device); - return error; -} - -static void __exit tc1100_exit(void) -{ - platform_device_unregister(tc1100_device); - platform_driver_unregister(&tc1100_driver); -} - -module_init(tc1100_init); -module_exit(tc1100_exit); |