2 * eepc-laptop.c - Asus Eee PC extras
4 * Based on asus_acpi.c as patched for the Eee PC by Asus:
5 * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar
6 * Based on eee.c from eeepc-linux
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/types.h>
23 #include <linux/platform_device.h>
24 #include <linux/backlight.h>
26 #include <linux/hwmon.h>
27 #include <linux/hwmon-sysfs.h>
28 #include <acpi/acpi_drivers.h>
29 #include <acpi/acpi_bus.h>
30 #include <linux/uaccess.h>
31 #include <linux/input.h>
32 #include <linux/rfkill.h>
33 #include <linux/pci.h>
35 #define EEEPC_LAPTOP_VERSION "0.1"
37 #define EEEPC_HOTK_NAME "Eee PC Hotkey Driver"
38 #define EEEPC_HOTK_FILE "eeepc"
39 #define EEEPC_HOTK_CLASS "hotkey"
40 #define EEEPC_HOTK_DEVICE_NAME "Hotkey"
41 #define EEEPC_HOTK_HID "ASUS010"
43 #define EEEPC_LOG EEEPC_HOTK_FILE ": "
44 #define EEEPC_ERR KERN_ERR EEEPC_LOG
45 #define EEEPC_WARNING KERN_WARNING EEEPC_LOG
46 #define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG
47 #define EEEPC_INFO KERN_INFO EEEPC_LOG
50 * Definitions for Asus EeePC
52 #define NOTIFY_WLAN_ON 0x10
53 #define NOTIFY_BRN_MIN 0x20
54 #define NOTIFY_BRN_MAX 0x2f
57 DISABLE_ASL_WLAN = 0x0001,
58 DISABLE_ASL_BLUETOOTH = 0x0002,
59 DISABLE_ASL_IRDA = 0x0004,
60 DISABLE_ASL_CAMERA = 0x0008,
61 DISABLE_ASL_TV = 0x0010,
62 DISABLE_ASL_GPS = 0x0020,
63 DISABLE_ASL_DISPLAYSWITCH = 0x0040,
64 DISABLE_ASL_MODEM = 0x0080,
65 DISABLE_ASL_CARDREADER = 0x0100
82 CM_ASL_CPUTEMPERATURE,
93 static const char *cm_getv[] = {
94 "WLDG", "BTHG", NULL, NULL,
95 "CAMG", NULL, NULL, NULL,
96 NULL, "PBLG", NULL, NULL,
97 "CFVG", NULL, NULL, NULL,
98 "USBG", NULL, NULL, "MODG",
102 static const char *cm_setv[] = {
103 "WLDS", "BTHS", NULL, NULL,
104 "CAMS", NULL, NULL, NULL,
105 "SDSP", "PBLS", "HDPS", NULL,
106 "CFVS", NULL, NULL, NULL,
107 "USBG", NULL, NULL, "MODS",
111 #define EEEPC_EC "\\_SB.PCI0.SBRG.EC0."
113 #define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */
114 #define EEEPC_EC_SC02 0x63
115 #define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */
116 #define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */
117 #define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */
118 #define EEEPC_EC_SFB3 0xD3
121 * This is the main structure, we can use it to store useful information
122 * about the hotk device
125 struct acpi_device *device; /* the device we are in */
126 acpi_handle handle; /* the handle of the hotk device */
127 u32 cm_supported; /* the control methods supported
129 uint init_flag; /* Init flags */
130 u16 event_count[128]; /* count for each event */
131 struct input_dev *inputdev;
133 struct rfkill *eeepc_wlan_rfkill;
134 struct rfkill *eeepc_bluetooth_rfkill;
137 /* The actual device the driver binds to */
138 static struct eeepc_hotk *ehotk;
140 /* Platform device/driver */
141 static struct platform_driver platform_driver = {
143 .name = EEEPC_HOTK_FILE,
144 .owner = THIS_MODULE,
148 static struct platform_device *platform_device;
156 enum { KE_KEY, KE_END };
158 static struct key_entry eeepc_keymap[] = {
159 /* Sleep already handled via generic ACPI code */
160 {KE_KEY, 0x10, KEY_WLAN },
161 {KE_KEY, 0x12, KEY_PROG1 },
162 {KE_KEY, 0x13, KEY_MUTE },
163 {KE_KEY, 0x14, KEY_VOLUMEDOWN },
164 {KE_KEY, 0x15, KEY_VOLUMEUP },
165 {KE_KEY, 0x1a, KEY_COFFEE },
166 {KE_KEY, 0x1b, KEY_ZOOM },
167 {KE_KEY, 0x1c, KEY_PROG2 },
168 {KE_KEY, 0x1d, KEY_PROG3 },
169 {KE_KEY, NOTIFY_BRN_MIN, KEY_BRIGHTNESSDOWN },
170 {KE_KEY, NOTIFY_BRN_MIN + 2, KEY_BRIGHTNESSUP },
171 {KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
172 {KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
173 {KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
178 * The hotkey driver declaration
180 static int eeepc_hotk_add(struct acpi_device *device);
181 static int eeepc_hotk_remove(struct acpi_device *device, int type);
183 static const struct acpi_device_id eeepc_device_ids[] = {
187 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
189 static struct acpi_driver eeepc_hotk_driver = {
190 .name = EEEPC_HOTK_NAME,
191 .class = EEEPC_HOTK_CLASS,
192 .ids = eeepc_device_ids,
194 .add = eeepc_hotk_add,
195 .remove = eeepc_hotk_remove,
199 /* The backlight device /sys/class/backlight */
200 static struct backlight_device *eeepc_backlight_device;
202 /* The hwmon device */
203 static struct device *eeepc_hwmon_device;
206 * The backlight class declaration
208 static int read_brightness(struct backlight_device *bd);
209 static int update_bl_status(struct backlight_device *bd);
210 static struct backlight_ops eeepcbl_ops = {
211 .get_brightness = read_brightness,
212 .update_status = update_bl_status,
215 MODULE_AUTHOR("Corentin Chary, Eric Cooper");
216 MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
217 MODULE_LICENSE("GPL");
222 static int write_acpi_int(acpi_handle handle, const char *method, int val,
223 struct acpi_buffer *output)
225 struct acpi_object_list params;
226 union acpi_object in_obj;
230 params.pointer = &in_obj;
231 in_obj.type = ACPI_TYPE_INTEGER;
232 in_obj.integer.value = val;
234 status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
235 return (status == AE_OK ? 0 : -1);
238 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
241 unsigned long long result;
243 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
244 if (ACPI_FAILURE(status)) {
253 static int set_acpi(int cm, int value)
255 if (ehotk->cm_supported & (0x1 << cm)) {
256 const char *method = cm_setv[cm];
259 if (write_acpi_int(ehotk->handle, method, value, NULL))
260 printk(EEEPC_WARNING "Error writing %s\n", method);
265 static int get_acpi(int cm)
268 if ((ehotk->cm_supported & (0x1 << cm))) {
269 const char *method = cm_getv[cm];
272 if (read_acpi_int(ehotk->handle, method, &value))
273 printk(EEEPC_WARNING "Error reading %s\n", method);
281 static int read_brightness(struct backlight_device *bd)
283 return get_acpi(CM_ASL_PANELBRIGHT);
286 static int set_brightness(struct backlight_device *bd, int value)
288 value = max(0, min(15, value));
289 return set_acpi(CM_ASL_PANELBRIGHT, value);
292 static int update_bl_status(struct backlight_device *bd)
294 return set_brightness(bd, bd->props.brightness);
301 static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state)
303 if (state == RFKILL_STATE_SOFT_BLOCKED)
304 return set_acpi(CM_ASL_WLAN, 0);
306 return set_acpi(CM_ASL_WLAN, 1);
309 static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state)
311 if (get_acpi(CM_ASL_WLAN) == 1)
312 *state = RFKILL_STATE_UNBLOCKED;
314 *state = RFKILL_STATE_SOFT_BLOCKED;
318 static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state)
320 if (state == RFKILL_STATE_SOFT_BLOCKED)
321 return set_acpi(CM_ASL_BLUETOOTH, 0);
323 return set_acpi(CM_ASL_BLUETOOTH, 1);
326 static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state)
328 if (get_acpi(CM_ASL_BLUETOOTH) == 1)
329 *state = RFKILL_STATE_UNBLOCKED;
331 *state = RFKILL_STATE_SOFT_BLOCKED;
338 static int parse_arg(const char *buf, unsigned long count, int *val)
342 if (sscanf(buf, "%i", val) != 1)
347 static ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
351 rv = parse_arg(buf, count, &value);
357 static ssize_t show_sys_acpi(int cm, char *buf)
359 return sprintf(buf, "%d\n", get_acpi(cm));
362 #define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
363 static ssize_t show_##_name(struct device *dev, \
364 struct device_attribute *attr, \
367 return show_sys_acpi(_cm, buf); \
369 static ssize_t store_##_name(struct device *dev, \
370 struct device_attribute *attr, \
371 const char *buf, size_t count) \
373 return store_sys_acpi(_cm, buf, count); \
375 static struct device_attribute dev_attr_##_name = { \
377 .name = __stringify(_name), \
379 .show = show_##_name, \
380 .store = store_##_name, \
383 EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
384 EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
385 EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
387 static struct attribute *platform_attributes[] = {
388 &dev_attr_camera.attr,
389 &dev_attr_cardr.attr,
394 static struct attribute_group platform_attribute_group = {
395 .attrs = platform_attributes
401 static struct key_entry *eepc_get_entry_by_scancode(int code)
403 struct key_entry *key;
405 for (key = eeepc_keymap; key->type != KE_END; key++)
406 if (code == key->code)
412 static struct key_entry *eepc_get_entry_by_keycode(int code)
414 struct key_entry *key;
416 for (key = eeepc_keymap; key->type != KE_END; key++)
417 if (code == key->keycode && key->type == KE_KEY)
423 static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
425 struct key_entry *key = eepc_get_entry_by_scancode(scancode);
427 if (key && key->type == KE_KEY) {
428 *keycode = key->keycode;
435 static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
437 struct key_entry *key;
440 if (keycode < 0 || keycode > KEY_MAX)
443 key = eepc_get_entry_by_scancode(scancode);
444 if (key && key->type == KE_KEY) {
445 old_keycode = key->keycode;
446 key->keycode = keycode;
447 set_bit(keycode, dev->keybit);
448 if (!eepc_get_entry_by_keycode(old_keycode))
449 clear_bit(old_keycode, dev->keybit);
456 static int eeepc_hotk_check(void)
458 const struct key_entry *key;
459 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
462 result = acpi_bus_get_status(ehotk->device);
465 if (ehotk->device->status.present) {
466 if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
468 printk(EEEPC_ERR "Hotkey initialization failed\n");
471 printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
474 /* get control methods supported */
475 if (read_acpi_int(ehotk->handle, "CMSG"
476 , &ehotk->cm_supported)) {
478 "Get control methods supported failed\n");
482 "Get control methods supported: 0x%x\n",
483 ehotk->cm_supported);
485 ehotk->inputdev = input_allocate_device();
486 if (!ehotk->inputdev) {
487 printk(EEEPC_INFO "Unable to allocate input device\n");
490 ehotk->inputdev->name = "Asus EeePC extra buttons";
491 ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
492 ehotk->inputdev->id.bustype = BUS_HOST;
493 ehotk->inputdev->getkeycode = eeepc_getkeycode;
494 ehotk->inputdev->setkeycode = eeepc_setkeycode;
496 for (key = eeepc_keymap; key->type != KE_END; key++) {
499 set_bit(EV_KEY, ehotk->inputdev->evbit);
500 set_bit(key->keycode, ehotk->inputdev->keybit);
504 result = input_register_device(ehotk->inputdev);
506 printk(EEEPC_INFO "Unable to register input device\n");
507 input_free_device(ehotk->inputdev);
511 printk(EEEPC_ERR "Hotkey device not present, aborting\n");
517 static int notify_brn(void)
519 /* returns the *previous* brightness, or -1 */
520 struct backlight_device *bd = eeepc_backlight_device;
522 int old = bd->props.brightness;
523 bd->props.brightness = read_brightness(bd);
529 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
532 struct pci_bus *bus = pci_find_bus(0, 1);
534 if (event != ACPI_NOTIFY_BUS_CHECK)
538 printk(EEEPC_WARNING "Unable to find PCI bus 1?\n");
542 if (get_acpi(CM_ASL_WLAN) == 1) {
543 dev = pci_get_slot(bus, 0);
545 /* Device already present */
549 dev = pci_scan_single_device(bus, 0);
551 pci_bus_assign_resources(bus);
552 if (pci_bus_add_device(dev))
553 printk(EEEPC_ERR "Unable to hotplug wifi\n");
556 dev = pci_get_slot(bus, 0);
558 pci_remove_bus_device(dev);
564 static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
566 static struct key_entry *key;
572 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
574 count = ehotk->event_count[event % 128]++;
575 acpi_bus_generate_proc_event(ehotk->device, event, count);
576 acpi_bus_generate_netlink_event(ehotk->device->pnp.device_class,
577 dev_name(&ehotk->device->dev), event,
579 if (ehotk->inputdev) {
580 if (brn != -ENODEV) {
581 /* brightness-change events need special
582 * handling for conversion to key events
587 brn += NOTIFY_BRN_MIN;
589 event = NOTIFY_BRN_MIN; /* brightness down */
590 else if (event > brn)
591 event = NOTIFY_BRN_MIN + 2; /* ... up */
593 event = NOTIFY_BRN_MIN + 1; /* ... unchanged */
595 key = eepc_get_entry_by_scancode(event);
599 input_report_key(ehotk->inputdev, key->keycode,
601 input_sync(ehotk->inputdev);
602 input_report_key(ehotk->inputdev, key->keycode,
604 input_sync(ehotk->inputdev);
611 static int eeepc_register_rfkill_notifier(char *node)
613 acpi_status status = AE_OK;
616 status = acpi_get_handle(NULL, node, &handle);
618 if (ACPI_SUCCESS(status)) {
619 status = acpi_install_notify_handler(handle,
623 if (ACPI_FAILURE(status))
625 "Failed to register notify on %s\n", node);
632 static void eeepc_unregister_rfkill_notifier(char *node)
634 acpi_status status = AE_OK;
637 status = acpi_get_handle(NULL, node, &handle);
639 if (ACPI_SUCCESS(status)) {
640 status = acpi_remove_notify_handler(handle,
642 eeepc_rfkill_notify);
643 if (ACPI_FAILURE(status))
645 "Error removing rfkill notify handler %s\n",
650 static int eeepc_hotk_add(struct acpi_device *device)
652 acpi_status status = AE_OK;
657 printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
658 ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
661 ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
662 ehotk->handle = device->handle;
663 strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
664 strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
665 device->driver_data = ehotk;
666 ehotk->device = device;
667 result = eeepc_hotk_check();
670 status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
671 eeepc_hotk_notify, ehotk);
672 if (ACPI_FAILURE(status))
673 printk(EEEPC_ERR "Error installing notify handler\n");
675 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
676 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
678 if (get_acpi(CM_ASL_WLAN) != -1) {
679 ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev,
682 if (!ehotk->eeepc_wlan_rfkill)
685 ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
686 ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
687 ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
688 if (get_acpi(CM_ASL_WLAN) == 1) {
689 ehotk->eeepc_wlan_rfkill->state =
690 RFKILL_STATE_UNBLOCKED;
691 rfkill_set_default(RFKILL_TYPE_WLAN,
692 RFKILL_STATE_UNBLOCKED);
694 ehotk->eeepc_wlan_rfkill->state =
695 RFKILL_STATE_SOFT_BLOCKED;
696 rfkill_set_default(RFKILL_TYPE_WLAN,
697 RFKILL_STATE_SOFT_BLOCKED);
699 result = rfkill_register(ehotk->eeepc_wlan_rfkill);
704 if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
705 ehotk->eeepc_bluetooth_rfkill =
706 rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
708 if (!ehotk->eeepc_bluetooth_rfkill)
711 ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
712 ehotk->eeepc_bluetooth_rfkill->toggle_radio =
713 eeepc_bluetooth_rfkill_set;
714 ehotk->eeepc_bluetooth_rfkill->get_state =
715 eeepc_bluetooth_rfkill_state;
716 if (get_acpi(CM_ASL_BLUETOOTH) == 1) {
717 ehotk->eeepc_bluetooth_rfkill->state =
718 RFKILL_STATE_UNBLOCKED;
719 rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
720 RFKILL_STATE_UNBLOCKED);
722 ehotk->eeepc_bluetooth_rfkill->state =
723 RFKILL_STATE_SOFT_BLOCKED;
724 rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
725 RFKILL_STATE_SOFT_BLOCKED);
728 result = rfkill_register(ehotk->eeepc_bluetooth_rfkill);
736 if (ehotk->eeepc_bluetooth_rfkill)
737 rfkill_free(ehotk->eeepc_bluetooth_rfkill);
738 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
739 ehotk->eeepc_wlan_rfkill = NULL;
741 if (ehotk->eeepc_wlan_rfkill)
742 rfkill_free(ehotk->eeepc_wlan_rfkill);
750 static int eeepc_hotk_remove(struct acpi_device *device, int type)
752 acpi_status status = 0;
754 if (!device || !acpi_driver_data(device))
756 status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
758 if (ACPI_FAILURE(status))
759 printk(EEEPC_ERR "Error removing notify handler\n");
761 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
762 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
771 static int eeepc_get_fan_pwm(void)
775 read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
776 value = value * 255 / 100;
780 static void eeepc_set_fan_pwm(int value)
782 value = SENSORS_LIMIT(value, 0, 255);
783 value = value * 100 / 255;
784 ec_write(EEEPC_EC_SC02, value);
787 static int eeepc_get_fan_rpm(void)
792 read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high);
793 read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low);
794 return (high << 8 | low);
797 static int eeepc_get_fan_ctrl(void)
801 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
802 return ((value & 0x02 ? 1 : 0));
805 static void eeepc_set_fan_ctrl(int manual)
809 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
814 ec_write(EEEPC_EC_SFB3, value);
817 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
821 rv = parse_arg(buf, count, &value);
827 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
829 return sprintf(buf, "%d\n", get());
832 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
833 static ssize_t show_##_name(struct device *dev, \
834 struct device_attribute *attr, \
837 return show_sys_hwmon(_set, buf); \
839 static ssize_t store_##_name(struct device *dev, \
840 struct device_attribute *attr, \
841 const char *buf, size_t count) \
843 return store_sys_hwmon(_get, buf, count); \
845 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
847 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
848 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
849 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
850 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
851 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
854 show_name(struct device *dev, struct device_attribute *attr, char *buf)
856 return sprintf(buf, "eeepc\n");
858 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
860 static struct attribute *hwmon_attributes[] = {
861 &sensor_dev_attr_pwm1.dev_attr.attr,
862 &sensor_dev_attr_fan1_input.dev_attr.attr,
863 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
864 &sensor_dev_attr_name.dev_attr.attr,
868 static struct attribute_group hwmon_attribute_group = {
869 .attrs = hwmon_attributes
875 static void eeepc_backlight_exit(void)
877 if (eeepc_backlight_device)
878 backlight_device_unregister(eeepc_backlight_device);
879 eeepc_backlight_device = NULL;
882 static void eeepc_rfkill_exit(void)
884 if (ehotk->eeepc_wlan_rfkill)
885 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
886 if (ehotk->eeepc_bluetooth_rfkill)
887 rfkill_unregister(ehotk->eeepc_bluetooth_rfkill);
890 static void eeepc_input_exit(void)
893 input_unregister_device(ehotk->inputdev);
896 static void eeepc_hwmon_exit(void)
898 struct device *hwmon;
900 hwmon = eeepc_hwmon_device;
903 sysfs_remove_group(&hwmon->kobj,
904 &hwmon_attribute_group);
905 hwmon_device_unregister(hwmon);
906 eeepc_hwmon_device = NULL;
909 static void __exit eeepc_laptop_exit(void)
911 eeepc_backlight_exit();
915 acpi_bus_unregister_driver(&eeepc_hotk_driver);
916 sysfs_remove_group(&platform_device->dev.kobj,
917 &platform_attribute_group);
918 platform_device_unregister(platform_device);
919 platform_driver_unregister(&platform_driver);
922 static int eeepc_backlight_init(struct device *dev)
924 struct backlight_device *bd;
926 bd = backlight_device_register(EEEPC_HOTK_FILE, dev,
930 "Could not register eeepc backlight device\n");
931 eeepc_backlight_device = NULL;
934 eeepc_backlight_device = bd;
935 bd->props.max_brightness = 15;
936 bd->props.brightness = read_brightness(NULL);
937 bd->props.power = FB_BLANK_UNBLANK;
938 backlight_update_status(bd);
942 static int eeepc_hwmon_init(struct device *dev)
944 struct device *hwmon;
947 hwmon = hwmon_device_register(dev);
950 "Could not register eeepc hwmon device\n");
951 eeepc_hwmon_device = NULL;
952 return PTR_ERR(hwmon);
954 eeepc_hwmon_device = hwmon;
955 result = sysfs_create_group(&hwmon->kobj,
956 &hwmon_attribute_group);
962 static int __init eeepc_laptop_init(void)
969 result = acpi_bus_register_driver(&eeepc_hotk_driver);
973 acpi_bus_unregister_driver(&eeepc_hotk_driver);
976 dev = acpi_get_physical_device(ehotk->device->handle);
978 if (!acpi_video_backlight_support()) {
979 result = eeepc_backlight_init(dev);
983 printk(EEEPC_INFO "Backlight controlled by ACPI video "
986 result = eeepc_hwmon_init(dev);
989 /* Register platform stuff */
990 result = platform_driver_register(&platform_driver);
992 goto fail_platform_driver;
993 platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1);
994 if (!platform_device) {
996 goto fail_platform_device1;
998 result = platform_device_add(platform_device);
1000 goto fail_platform_device2;
1001 result = sysfs_create_group(&platform_device->dev.kobj,
1002 &platform_attribute_group);
1007 platform_device_del(platform_device);
1008 fail_platform_device2:
1009 platform_device_put(platform_device);
1010 fail_platform_device1:
1011 platform_driver_unregister(&platform_driver);
1012 fail_platform_driver:
1015 eeepc_backlight_exit();
1018 eeepc_rfkill_exit();
1022 module_init(eeepc_laptop_init);
1023 module_exit(eeepc_laptop_exit);