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
, 0x11, KEY_WLAN
},
162 {KE_KEY
, 0x12, KEY_PROG1
},
163 {KE_KEY
, 0x13, KEY_MUTE
},
164 {KE_KEY
, 0x14, KEY_VOLUMEDOWN
},
165 {KE_KEY
, 0x15, KEY_VOLUMEUP
},
166 {KE_KEY
, 0x1a, KEY_COFFEE
},
167 {KE_KEY
, 0x1b, KEY_ZOOM
},
168 {KE_KEY
, 0x1c, KEY_PROG2
},
169 {KE_KEY
, 0x1d, KEY_PROG3
},
170 {KE_KEY
, NOTIFY_BRN_MIN
, KEY_BRIGHTNESSDOWN
},
171 {KE_KEY
, NOTIFY_BRN_MIN
+ 2, KEY_BRIGHTNESSUP
},
172 {KE_KEY
, 0x30, KEY_SWITCHVIDEOMODE
},
173 {KE_KEY
, 0x31, KEY_SWITCHVIDEOMODE
},
174 {KE_KEY
, 0x32, KEY_SWITCHVIDEOMODE
},
179 * The hotkey driver declaration
181 static int eeepc_hotk_add(struct acpi_device
*device
);
182 static int eeepc_hotk_remove(struct acpi_device
*device
, int type
);
184 static const struct acpi_device_id eeepc_device_ids
[] = {
188 MODULE_DEVICE_TABLE(acpi
, eeepc_device_ids
);
190 static struct acpi_driver eeepc_hotk_driver
= {
191 .name
= EEEPC_HOTK_NAME
,
192 .class = EEEPC_HOTK_CLASS
,
193 .ids
= eeepc_device_ids
,
195 .add
= eeepc_hotk_add
,
196 .remove
= eeepc_hotk_remove
,
200 /* The backlight device /sys/class/backlight */
201 static struct backlight_device
*eeepc_backlight_device
;
203 /* The hwmon device */
204 static struct device
*eeepc_hwmon_device
;
207 * The backlight class declaration
209 static int read_brightness(struct backlight_device
*bd
);
210 static int update_bl_status(struct backlight_device
*bd
);
211 static struct backlight_ops eeepcbl_ops
= {
212 .get_brightness
= read_brightness
,
213 .update_status
= update_bl_status
,
216 MODULE_AUTHOR("Corentin Chary, Eric Cooper");
217 MODULE_DESCRIPTION(EEEPC_HOTK_NAME
);
218 MODULE_LICENSE("GPL");
223 static int write_acpi_int(acpi_handle handle
, const char *method
, int val
,
224 struct acpi_buffer
*output
)
226 struct acpi_object_list params
;
227 union acpi_object in_obj
;
231 params
.pointer
= &in_obj
;
232 in_obj
.type
= ACPI_TYPE_INTEGER
;
233 in_obj
.integer
.value
= val
;
235 status
= acpi_evaluate_object(handle
, (char *)method
, ¶ms
, output
);
236 return (status
== AE_OK
? 0 : -1);
239 static int read_acpi_int(acpi_handle handle
, const char *method
, int *val
)
242 unsigned long long result
;
244 status
= acpi_evaluate_integer(handle
, (char *)method
, NULL
, &result
);
245 if (ACPI_FAILURE(status
)) {
254 static int set_acpi(int cm
, int value
)
256 if (ehotk
->cm_supported
& (0x1 << cm
)) {
257 const char *method
= cm_setv
[cm
];
260 if (write_acpi_int(ehotk
->handle
, method
, value
, NULL
))
261 printk(EEEPC_WARNING
"Error writing %s\n", method
);
266 static int get_acpi(int cm
)
269 if ((ehotk
->cm_supported
& (0x1 << cm
))) {
270 const char *method
= cm_getv
[cm
];
273 if (read_acpi_int(ehotk
->handle
, method
, &value
))
274 printk(EEEPC_WARNING
"Error reading %s\n", method
);
282 static int read_brightness(struct backlight_device
*bd
)
284 return get_acpi(CM_ASL_PANELBRIGHT
);
287 static int set_brightness(struct backlight_device
*bd
, int value
)
289 value
= max(0, min(15, value
));
290 return set_acpi(CM_ASL_PANELBRIGHT
, value
);
293 static int update_bl_status(struct backlight_device
*bd
)
295 return set_brightness(bd
, bd
->props
.brightness
);
302 static bool eeepc_wlan_rfkill_blocked(void)
304 if (get_acpi(CM_ASL_WLAN
) == 1)
309 static int eeepc_rfkill_set(void *data
, bool blocked
)
311 unsigned long asl
= (unsigned long)data
;
312 return set_acpi(asl
, !blocked
);
315 static const struct rfkill_ops eeepc_rfkill_ops
= {
316 .set_block
= eeepc_rfkill_set
,
322 static int parse_arg(const char *buf
, unsigned long count
, int *val
)
326 if (sscanf(buf
, "%i", val
) != 1)
331 static ssize_t
store_sys_acpi(int cm
, const char *buf
, size_t count
)
335 rv
= parse_arg(buf
, count
, &value
);
341 static ssize_t
show_sys_acpi(int cm
, char *buf
)
343 return sprintf(buf
, "%d\n", get_acpi(cm
));
346 #define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
347 static ssize_t show_##_name(struct device *dev, \
348 struct device_attribute *attr, \
351 return show_sys_acpi(_cm, buf); \
353 static ssize_t store_##_name(struct device *dev, \
354 struct device_attribute *attr, \
355 const char *buf, size_t count) \
357 return store_sys_acpi(_cm, buf, count); \
359 static struct device_attribute dev_attr_##_name = { \
361 .name = __stringify(_name), \
363 .show = show_##_name, \
364 .store = store_##_name, \
367 EEEPC_CREATE_DEVICE_ATTR(camera
, CM_ASL_CAMERA
);
368 EEEPC_CREATE_DEVICE_ATTR(cardr
, CM_ASL_CARDREADER
);
369 EEEPC_CREATE_DEVICE_ATTR(disp
, CM_ASL_DISPLAYSWITCH
);
370 EEEPC_CREATE_DEVICE_ATTR(cpufv
, CM_ASL_CPUFV
);
372 static struct attribute
*platform_attributes
[] = {
373 &dev_attr_camera
.attr
,
374 &dev_attr_cardr
.attr
,
376 &dev_attr_cpufv
.attr
,
380 static struct attribute_group platform_attribute_group
= {
381 .attrs
= platform_attributes
387 static struct key_entry
*eepc_get_entry_by_scancode(int code
)
389 struct key_entry
*key
;
391 for (key
= eeepc_keymap
; key
->type
!= KE_END
; key
++)
392 if (code
== key
->code
)
398 static struct key_entry
*eepc_get_entry_by_keycode(int code
)
400 struct key_entry
*key
;
402 for (key
= eeepc_keymap
; key
->type
!= KE_END
; key
++)
403 if (code
== key
->keycode
&& key
->type
== KE_KEY
)
409 static int eeepc_getkeycode(struct input_dev
*dev
, int scancode
, int *keycode
)
411 struct key_entry
*key
= eepc_get_entry_by_scancode(scancode
);
413 if (key
&& key
->type
== KE_KEY
) {
414 *keycode
= key
->keycode
;
421 static int eeepc_setkeycode(struct input_dev
*dev
, int scancode
, int keycode
)
423 struct key_entry
*key
;
426 if (keycode
< 0 || keycode
> KEY_MAX
)
429 key
= eepc_get_entry_by_scancode(scancode
);
430 if (key
&& key
->type
== KE_KEY
) {
431 old_keycode
= key
->keycode
;
432 key
->keycode
= keycode
;
433 set_bit(keycode
, dev
->keybit
);
434 if (!eepc_get_entry_by_keycode(old_keycode
))
435 clear_bit(old_keycode
, dev
->keybit
);
442 static int eeepc_hotk_check(void)
444 const struct key_entry
*key
;
445 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
448 result
= acpi_bus_get_status(ehotk
->device
);
451 if (ehotk
->device
->status
.present
) {
452 if (write_acpi_int(ehotk
->handle
, "INIT", ehotk
->init_flag
,
454 printk(EEEPC_ERR
"Hotkey initialization failed\n");
457 printk(EEEPC_NOTICE
"Hotkey init flags 0x%x\n",
460 /* get control methods supported */
461 if (read_acpi_int(ehotk
->handle
, "CMSG"
462 , &ehotk
->cm_supported
)) {
464 "Get control methods supported failed\n");
468 "Get control methods supported: 0x%x\n",
469 ehotk
->cm_supported
);
471 ehotk
->inputdev
= input_allocate_device();
472 if (!ehotk
->inputdev
) {
473 printk(EEEPC_INFO
"Unable to allocate input device\n");
476 ehotk
->inputdev
->name
= "Asus EeePC extra buttons";
477 ehotk
->inputdev
->phys
= EEEPC_HOTK_FILE
"/input0";
478 ehotk
->inputdev
->id
.bustype
= BUS_HOST
;
479 ehotk
->inputdev
->getkeycode
= eeepc_getkeycode
;
480 ehotk
->inputdev
->setkeycode
= eeepc_setkeycode
;
482 for (key
= eeepc_keymap
; key
->type
!= KE_END
; key
++) {
485 set_bit(EV_KEY
, ehotk
->inputdev
->evbit
);
486 set_bit(key
->keycode
, ehotk
->inputdev
->keybit
);
490 result
= input_register_device(ehotk
->inputdev
);
492 printk(EEEPC_INFO
"Unable to register input device\n");
493 input_free_device(ehotk
->inputdev
);
497 printk(EEEPC_ERR
"Hotkey device not present, aborting\n");
503 static int notify_brn(void)
505 /* returns the *previous* brightness, or -1 */
506 struct backlight_device
*bd
= eeepc_backlight_device
;
508 int old
= bd
->props
.brightness
;
509 bd
->props
.brightness
= read_brightness(bd
);
515 static void eeepc_rfkill_notify(acpi_handle handle
, u32 event
, void *data
)
518 struct pci_bus
*bus
= pci_find_bus(0, 1);
521 if (event
!= ACPI_NOTIFY_BUS_CHECK
)
525 printk(EEEPC_WARNING
"Unable to find PCI bus 1?\n");
529 blocked
= eeepc_wlan_rfkill_blocked();
531 dev
= pci_get_slot(bus
, 0);
533 /* Device already present */
537 dev
= pci_scan_single_device(bus
, 0);
539 pci_bus_assign_resources(bus
);
540 if (pci_bus_add_device(dev
))
541 printk(EEEPC_ERR
"Unable to hotplug wifi\n");
544 dev
= pci_get_slot(bus
, 0);
546 pci_remove_bus_device(dev
);
551 rfkill_set_sw_state(ehotk
->eeepc_wlan_rfkill
, blocked
);
554 static void eeepc_hotk_notify(acpi_handle handle
, u32 event
, void *data
)
556 static struct key_entry
*key
;
562 if (event
>= NOTIFY_BRN_MIN
&& event
<= NOTIFY_BRN_MAX
)
564 count
= ehotk
->event_count
[event
% 128]++;
565 acpi_bus_generate_proc_event(ehotk
->device
, event
, count
);
566 acpi_bus_generate_netlink_event(ehotk
->device
->pnp
.device_class
,
567 dev_name(&ehotk
->device
->dev
), event
,
569 if (ehotk
->inputdev
) {
570 if (brn
!= -ENODEV
) {
571 /* brightness-change events need special
572 * handling for conversion to key events
577 brn
+= NOTIFY_BRN_MIN
;
579 event
= NOTIFY_BRN_MIN
; /* brightness down */
580 else if (event
> brn
)
581 event
= NOTIFY_BRN_MIN
+ 2; /* ... up */
583 event
= NOTIFY_BRN_MIN
+ 1; /* ... unchanged */
585 key
= eepc_get_entry_by_scancode(event
);
589 input_report_key(ehotk
->inputdev
, key
->keycode
,
591 input_sync(ehotk
->inputdev
);
592 input_report_key(ehotk
->inputdev
, key
->keycode
,
594 input_sync(ehotk
->inputdev
);
601 static int eeepc_register_rfkill_notifier(char *node
)
603 acpi_status status
= AE_OK
;
606 status
= acpi_get_handle(NULL
, node
, &handle
);
608 if (ACPI_SUCCESS(status
)) {
609 status
= acpi_install_notify_handler(handle
,
613 if (ACPI_FAILURE(status
))
615 "Failed to register notify on %s\n", node
);
622 static void eeepc_unregister_rfkill_notifier(char *node
)
624 acpi_status status
= AE_OK
;
627 status
= acpi_get_handle(NULL
, node
, &handle
);
629 if (ACPI_SUCCESS(status
)) {
630 status
= acpi_remove_notify_handler(handle
,
632 eeepc_rfkill_notify
);
633 if (ACPI_FAILURE(status
))
635 "Error removing rfkill notify handler %s\n",
640 static int eeepc_hotk_add(struct acpi_device
*device
)
642 acpi_status status
= AE_OK
;
647 printk(EEEPC_NOTICE EEEPC_HOTK_NAME
"\n");
648 ehotk
= kzalloc(sizeof(struct eeepc_hotk
), GFP_KERNEL
);
651 ehotk
->init_flag
= DISABLE_ASL_WLAN
| DISABLE_ASL_DISPLAYSWITCH
;
652 ehotk
->handle
= device
->handle
;
653 strcpy(acpi_device_name(device
), EEEPC_HOTK_DEVICE_NAME
);
654 strcpy(acpi_device_class(device
), EEEPC_HOTK_CLASS
);
655 device
->driver_data
= ehotk
;
656 ehotk
->device
= device
;
657 result
= eeepc_hotk_check();
660 status
= acpi_install_notify_handler(ehotk
->handle
, ACPI_SYSTEM_NOTIFY
,
661 eeepc_hotk_notify
, ehotk
);
662 if (ACPI_FAILURE(status
))
663 printk(EEEPC_ERR
"Error installing notify handler\n");
665 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
666 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
668 if (get_acpi(CM_ASL_WLAN
) != -1) {
669 ehotk
->eeepc_wlan_rfkill
= rfkill_alloc("eeepc-wlan",
673 (void *)CM_ASL_WLAN
);
675 if (!ehotk
->eeepc_wlan_rfkill
)
678 rfkill_set_sw_state(ehotk
->eeepc_wlan_rfkill
,
679 get_acpi(CM_ASL_WLAN
) != 1);
680 result
= rfkill_register(ehotk
->eeepc_wlan_rfkill
);
685 if (get_acpi(CM_ASL_BLUETOOTH
) != -1) {
686 ehotk
->eeepc_bluetooth_rfkill
=
687 rfkill_alloc("eeepc-bluetooth",
689 RFKILL_TYPE_BLUETOOTH
,
691 (void *)CM_ASL_BLUETOOTH
);
693 if (!ehotk
->eeepc_bluetooth_rfkill
)
696 rfkill_set_sw_state(ehotk
->eeepc_bluetooth_rfkill
,
697 get_acpi(CM_ASL_BLUETOOTH
) != 1);
698 result
= rfkill_register(ehotk
->eeepc_bluetooth_rfkill
);
706 rfkill_destroy(ehotk
->eeepc_bluetooth_rfkill
);
707 rfkill_unregister(ehotk
->eeepc_wlan_rfkill
);
709 rfkill_destroy(ehotk
->eeepc_wlan_rfkill
);
710 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
711 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
719 static int eeepc_hotk_remove(struct acpi_device
*device
, int type
)
721 acpi_status status
= 0;
723 if (!device
|| !acpi_driver_data(device
))
725 status
= acpi_remove_notify_handler(ehotk
->handle
, ACPI_SYSTEM_NOTIFY
,
727 if (ACPI_FAILURE(status
))
728 printk(EEEPC_ERR
"Error removing notify handler\n");
730 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
731 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
740 static int eeepc_get_fan_pwm(void)
744 read_acpi_int(NULL
, EEEPC_EC_FAN_PWM
, &value
);
745 value
= value
* 255 / 100;
749 static void eeepc_set_fan_pwm(int value
)
751 value
= SENSORS_LIMIT(value
, 0, 255);
752 value
= value
* 100 / 255;
753 ec_write(EEEPC_EC_SC02
, value
);
756 static int eeepc_get_fan_rpm(void)
761 read_acpi_int(NULL
, EEEPC_EC_FAN_HRPM
, &high
);
762 read_acpi_int(NULL
, EEEPC_EC_FAN_LRPM
, &low
);
763 return (high
<< 8 | low
);
766 static int eeepc_get_fan_ctrl(void)
770 read_acpi_int(NULL
, EEEPC_EC_FAN_CTRL
, &value
);
771 return ((value
& 0x02 ? 1 : 0));
774 static void eeepc_set_fan_ctrl(int manual
)
778 read_acpi_int(NULL
, EEEPC_EC_FAN_CTRL
, &value
);
783 ec_write(EEEPC_EC_SFB3
, value
);
786 static ssize_t
store_sys_hwmon(void (*set
)(int), const char *buf
, size_t count
)
790 rv
= parse_arg(buf
, count
, &value
);
796 static ssize_t
show_sys_hwmon(int (*get
)(void), char *buf
)
798 return sprintf(buf
, "%d\n", get());
801 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
802 static ssize_t show_##_name(struct device *dev, \
803 struct device_attribute *attr, \
806 return show_sys_hwmon(_set, buf); \
808 static ssize_t store_##_name(struct device *dev, \
809 struct device_attribute *attr, \
810 const char *buf, size_t count) \
812 return store_sys_hwmon(_get, buf, count); \
814 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
816 EEEPC_CREATE_SENSOR_ATTR(fan1_input
, S_IRUGO
, eeepc_get_fan_rpm
, NULL
);
817 EEEPC_CREATE_SENSOR_ATTR(pwm1
, S_IRUGO
| S_IWUSR
,
818 eeepc_get_fan_pwm
, eeepc_set_fan_pwm
);
819 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable
, S_IRUGO
| S_IWUSR
,
820 eeepc_get_fan_ctrl
, eeepc_set_fan_ctrl
);
823 show_name(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
825 return sprintf(buf
, "eeepc\n");
827 static SENSOR_DEVICE_ATTR(name
, S_IRUGO
, show_name
, NULL
, 0);
829 static struct attribute
*hwmon_attributes
[] = {
830 &sensor_dev_attr_pwm1
.dev_attr
.attr
,
831 &sensor_dev_attr_fan1_input
.dev_attr
.attr
,
832 &sensor_dev_attr_pwm1_enable
.dev_attr
.attr
,
833 &sensor_dev_attr_name
.dev_attr
.attr
,
837 static struct attribute_group hwmon_attribute_group
= {
838 .attrs
= hwmon_attributes
844 static void eeepc_backlight_exit(void)
846 if (eeepc_backlight_device
)
847 backlight_device_unregister(eeepc_backlight_device
);
848 eeepc_backlight_device
= NULL
;
851 static void eeepc_rfkill_exit(void)
853 if (ehotk
->eeepc_wlan_rfkill
)
854 rfkill_unregister(ehotk
->eeepc_wlan_rfkill
);
855 if (ehotk
->eeepc_bluetooth_rfkill
)
856 rfkill_unregister(ehotk
->eeepc_bluetooth_rfkill
);
859 static void eeepc_input_exit(void)
862 input_unregister_device(ehotk
->inputdev
);
865 static void eeepc_hwmon_exit(void)
867 struct device
*hwmon
;
869 hwmon
= eeepc_hwmon_device
;
872 sysfs_remove_group(&hwmon
->kobj
,
873 &hwmon_attribute_group
);
874 hwmon_device_unregister(hwmon
);
875 eeepc_hwmon_device
= NULL
;
878 static void __exit
eeepc_laptop_exit(void)
880 eeepc_backlight_exit();
884 acpi_bus_unregister_driver(&eeepc_hotk_driver
);
885 sysfs_remove_group(&platform_device
->dev
.kobj
,
886 &platform_attribute_group
);
887 platform_device_unregister(platform_device
);
888 platform_driver_unregister(&platform_driver
);
891 static int eeepc_backlight_init(struct device
*dev
)
893 struct backlight_device
*bd
;
895 bd
= backlight_device_register(EEEPC_HOTK_FILE
, dev
,
899 "Could not register eeepc backlight device\n");
900 eeepc_backlight_device
= NULL
;
903 eeepc_backlight_device
= bd
;
904 bd
->props
.max_brightness
= 15;
905 bd
->props
.brightness
= read_brightness(NULL
);
906 bd
->props
.power
= FB_BLANK_UNBLANK
;
907 backlight_update_status(bd
);
911 static int eeepc_hwmon_init(struct device
*dev
)
913 struct device
*hwmon
;
916 hwmon
= hwmon_device_register(dev
);
919 "Could not register eeepc hwmon device\n");
920 eeepc_hwmon_device
= NULL
;
921 return PTR_ERR(hwmon
);
923 eeepc_hwmon_device
= hwmon
;
924 result
= sysfs_create_group(&hwmon
->kobj
,
925 &hwmon_attribute_group
);
931 static int __init
eeepc_laptop_init(void)
938 result
= acpi_bus_register_driver(&eeepc_hotk_driver
);
942 acpi_bus_unregister_driver(&eeepc_hotk_driver
);
945 dev
= acpi_get_physical_device(ehotk
->device
->handle
);
947 if (!acpi_video_backlight_support()) {
948 result
= eeepc_backlight_init(dev
);
952 printk(EEEPC_INFO
"Backlight controlled by ACPI video "
955 result
= eeepc_hwmon_init(dev
);
958 /* Register platform stuff */
959 result
= platform_driver_register(&platform_driver
);
961 goto fail_platform_driver
;
962 platform_device
= platform_device_alloc(EEEPC_HOTK_FILE
, -1);
963 if (!platform_device
) {
965 goto fail_platform_device1
;
967 result
= platform_device_add(platform_device
);
969 goto fail_platform_device2
;
970 result
= sysfs_create_group(&platform_device
->dev
.kobj
,
971 &platform_attribute_group
);
976 platform_device_del(platform_device
);
977 fail_platform_device2
:
978 platform_device_put(platform_device
);
979 fail_platform_device1
:
980 platform_driver_unregister(&platform_driver
);
981 fail_platform_driver
:
984 eeepc_backlight_exit();
991 module_init(eeepc_laptop_init
);
992 module_exit(eeepc_laptop_exit
);