2 * eeepc-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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/init.h>
24 #include <linux/types.h>
25 #include <linux/platform_device.h>
26 #include <linux/backlight.h>
28 #include <linux/hwmon.h>
29 #include <linux/hwmon-sysfs.h>
30 #include <acpi/acpi_drivers.h>
31 #include <acpi/acpi_bus.h>
32 #include <linux/uaccess.h>
33 #include <linux/input.h>
34 #include <linux/input/sparse-keymap.h>
35 #include <linux/rfkill.h>
36 #include <linux/pci.h>
37 #include <linux/pci_hotplug.h>
38 #include <linux/leds.h>
39 #include <linux/dmi.h>
41 #define EEEPC_LAPTOP_VERSION "0.1"
42 #define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver"
43 #define EEEPC_LAPTOP_FILE "eeepc"
45 #define EEEPC_ACPI_CLASS "hotkey"
46 #define EEEPC_ACPI_DEVICE_NAME "Hotkey"
47 #define EEEPC_ACPI_HID "ASUS010"
49 MODULE_AUTHOR("Corentin Chary, Eric Cooper");
50 MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
51 MODULE_LICENSE("GPL");
53 static bool hotplug_disabled;
55 module_param(hotplug_disabled, bool, 0644);
56 MODULE_PARM_DESC(hotplug_disabled,
57 "Disable hotplug for wireless device. "
58 "If your laptop need that, please report to "
59 "acpi4asus-user@lists.sourceforge.net.");
62 * Definitions for Asus EeePC
64 #define NOTIFY_BRN_MIN 0x20
65 #define NOTIFY_BRN_MAX 0x2f
68 DISABLE_ASL_WLAN = 0x0001,
69 DISABLE_ASL_BLUETOOTH = 0x0002,
70 DISABLE_ASL_IRDA = 0x0004,
71 DISABLE_ASL_CAMERA = 0x0008,
72 DISABLE_ASL_TV = 0x0010,
73 DISABLE_ASL_GPS = 0x0020,
74 DISABLE_ASL_DISPLAYSWITCH = 0x0040,
75 DISABLE_ASL_MODEM = 0x0080,
76 DISABLE_ASL_CARDREADER = 0x0100,
77 DISABLE_ASL_3G = 0x0200,
78 DISABLE_ASL_WIMAX = 0x0400,
79 DISABLE_ASL_HWCF = 0x0800
96 CM_ASL_CPUTEMPERATURE,
109 CM_ASL_PANELPOWER, /*P901*/
113 static const char *cm_getv[] = {
114 "WLDG", "BTHG", NULL, NULL,
115 "CAMG", NULL, NULL, NULL,
116 NULL, "PBLG", NULL, NULL,
117 "CFVG", NULL, NULL, NULL,
118 "USBG", NULL, NULL, "MODG",
119 "CRDG", "M3GG", "WIMG", "HWCF",
120 "LIDG", "TYPE", "PBPG", "TPDG"
123 static const char *cm_setv[] = {
124 "WLDS", "BTHS", NULL, NULL,
125 "CAMS", NULL, NULL, NULL,
126 "SDSP", "PBLS", "HDPS", NULL,
127 "CFVS", NULL, NULL, NULL,
128 "USBG", NULL, NULL, "MODS",
129 "CRDS", "M3GS", "WIMS", NULL,
130 NULL, NULL, "PBPS", "TPDS"
133 static const struct key_entry eeepc_keymap[] = {
134 { KE_KEY, 0x10, { KEY_WLAN } },
135 { KE_KEY, 0x11, { KEY_WLAN } },
136 { KE_KEY, 0x12, { KEY_PROG1 } },
137 { KE_KEY, 0x13, { KEY_MUTE } },
138 { KE_KEY, 0x14, { KEY_VOLUMEDOWN } },
139 { KE_KEY, 0x15, { KEY_VOLUMEUP } },
140 { KE_KEY, 0x16, { KEY_DISPLAY_OFF } },
141 { KE_KEY, 0x1a, { KEY_COFFEE } },
142 { KE_KEY, 0x1b, { KEY_ZOOM } },
143 { KE_KEY, 0x1c, { KEY_PROG2 } },
144 { KE_KEY, 0x1d, { KEY_PROG3 } },
145 { KE_KEY, NOTIFY_BRN_MIN, { KEY_BRIGHTNESSDOWN } },
146 { KE_KEY, NOTIFY_BRN_MAX, { KEY_BRIGHTNESSUP } },
147 { KE_KEY, 0x30, { KEY_SWITCHVIDEOMODE } },
148 { KE_KEY, 0x31, { KEY_SWITCHVIDEOMODE } },
149 { KE_KEY, 0x32, { KEY_SWITCHVIDEOMODE } },
150 { KE_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */
151 { KE_KEY, 0x38, { KEY_F14 } },
156 * This is the main structure, we can use it to store useful information
158 struct eeepc_laptop {
159 acpi_handle handle; /* the handle of the acpi device */
160 u32 cm_supported; /* the control methods supported
163 bool hotplug_disabled;
164 u16 event_count[128]; /* count for each event */
166 struct platform_device *platform_device;
167 struct device *hwmon_device;
168 struct backlight_device *backlight_device;
170 struct input_dev *inputdev;
171 struct key_entry *keymap;
173 struct rfkill *wlan_rfkill;
174 struct rfkill *bluetooth_rfkill;
175 struct rfkill *wwan3g_rfkill;
176 struct rfkill *wimax_rfkill;
178 struct hotplug_slot *hotplug_slot;
179 struct mutex hotplug_lock;
181 struct led_classdev tpd_led;
183 struct workqueue_struct *led_workqueue;
184 struct work_struct tpd_led_work;
190 static int write_acpi_int(acpi_handle handle, const char *method, int val)
192 struct acpi_object_list params;
193 union acpi_object in_obj;
197 params.pointer = &in_obj;
198 in_obj.type = ACPI_TYPE_INTEGER;
199 in_obj.integer.value = val;
201 status = acpi_evaluate_object(handle, (char *)method, ¶ms, NULL);
202 return (status == AE_OK ? 0 : -1);
205 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
208 unsigned long long result;
210 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
211 if (ACPI_FAILURE(status)) {
220 static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
222 const char *method = cm_setv[cm];
226 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
229 if (write_acpi_int(eeepc->handle, method, value))
230 pr_warning("Error writing %s\n", method);
234 static int get_acpi(struct eeepc_laptop *eeepc, int cm)
236 const char *method = cm_getv[cm];
241 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
244 if (read_acpi_int(eeepc->handle, method, &value))
245 pr_warning("Error reading %s\n", method);
249 static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
252 const char *method = cm_setv[cm];
257 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
260 status = acpi_get_handle(eeepc->handle, (char *)method,
262 if (status != AE_OK) {
263 pr_warning("Error finding %s\n", method);
273 static int parse_arg(const char *buf, unsigned long count, int *val)
277 if (sscanf(buf, "%i", val) != 1)
282 static ssize_t store_sys_acpi(struct device *dev, int cm,
283 const char *buf, size_t count)
285 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
288 rv = parse_arg(buf, count, &value);
290 value = set_acpi(eeepc, cm, value);
296 static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
298 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
299 int value = get_acpi(eeepc, cm);
303 return sprintf(buf, "%d\n", value);
306 #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
307 static ssize_t show_##_name(struct device *dev, \
308 struct device_attribute *attr, \
311 return show_sys_acpi(dev, _cm, buf); \
313 static ssize_t store_##_name(struct device *dev, \
314 struct device_attribute *attr, \
315 const char *buf, size_t count) \
317 return store_sys_acpi(dev, _cm, buf, count); \
319 static struct device_attribute dev_attr_##_name = { \
321 .name = __stringify(_name), \
323 .show = show_##_name, \
324 .store = store_##_name, \
327 EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
328 EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
329 EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
336 static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
338 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
339 c->num = (c->cur >> 8) & 0xff;
341 if (c->cur < 0 || c->num <= 0 || c->num > 12)
346 static ssize_t show_available_cpufv(struct device *dev,
347 struct device_attribute *attr,
350 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
351 struct eeepc_cpufv c;
355 if (get_cpufv(eeepc, &c))
357 for (i = 0; i < c.num; i++)
358 len += sprintf(buf + len, "%d ", i);
359 len += sprintf(buf + len, "\n");
363 static ssize_t show_cpufv(struct device *dev,
364 struct device_attribute *attr,
367 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
368 struct eeepc_cpufv c;
370 if (get_cpufv(eeepc, &c))
372 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
375 static ssize_t store_cpufv(struct device *dev,
376 struct device_attribute *attr,
377 const char *buf, size_t count)
379 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
380 struct eeepc_cpufv c;
383 if (eeepc->cpufv_disabled)
385 if (get_cpufv(eeepc, &c))
387 rv = parse_arg(buf, count, &value);
390 if (!rv || value < 0 || value >= c.num)
392 set_acpi(eeepc, CM_ASL_CPUFV, value);
396 static ssize_t show_cpufv_disabled(struct device *dev,
397 struct device_attribute *attr,
400 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
402 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
405 static ssize_t store_cpufv_disabled(struct device *dev,
406 struct device_attribute *attr,
407 const char *buf, size_t count)
409 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
412 rv = parse_arg(buf, count, &value);
418 if (eeepc->cpufv_disabled)
419 pr_warning("cpufv enabled (not officially supported "
421 eeepc->cpufv_disabled = false;
431 static struct device_attribute dev_attr_cpufv = {
439 static struct device_attribute dev_attr_available_cpufv = {
441 .name = "available_cpufv",
443 .show = show_available_cpufv
446 static struct device_attribute dev_attr_cpufv_disabled = {
448 .name = "cpufv_disabled",
450 .show = show_cpufv_disabled,
451 .store = store_cpufv_disabled
455 static struct attribute *platform_attributes[] = {
456 &dev_attr_camera.attr,
457 &dev_attr_cardr.attr,
459 &dev_attr_cpufv.attr,
460 &dev_attr_available_cpufv.attr,
461 &dev_attr_cpufv_disabled.attr,
465 static struct attribute_group platform_attribute_group = {
466 .attrs = platform_attributes
469 static int eeepc_platform_init(struct eeepc_laptop *eeepc)
473 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
474 if (!eeepc->platform_device)
476 platform_set_drvdata(eeepc->platform_device, eeepc);
478 result = platform_device_add(eeepc->platform_device);
480 goto fail_platform_device;
482 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
483 &platform_attribute_group);
489 platform_device_del(eeepc->platform_device);
490 fail_platform_device:
491 platform_device_put(eeepc->platform_device);
495 static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
497 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
498 &platform_attribute_group);
499 platform_device_unregister(eeepc->platform_device);
506 * These functions actually update the LED's, and are called from a
507 * workqueue. By doing this as separate work rather than when the LED
508 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
509 * potentially bad time, such as a timer interrupt.
511 static void tpd_led_update(struct work_struct *work)
513 struct eeepc_laptop *eeepc;
515 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
517 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
520 static void tpd_led_set(struct led_classdev *led_cdev,
521 enum led_brightness value)
523 struct eeepc_laptop *eeepc;
525 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
527 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
528 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
531 static int eeepc_led_init(struct eeepc_laptop *eeepc)
535 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
538 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
539 if (!eeepc->led_workqueue)
541 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
543 eeepc->tpd_led.name = "eeepc::touchpad";
544 eeepc->tpd_led.brightness_set = tpd_led_set;
545 eeepc->tpd_led.max_brightness = 1;
547 rv = led_classdev_register(&eeepc->platform_device->dev,
550 destroy_workqueue(eeepc->led_workqueue);
557 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
559 if (eeepc->tpd_led.dev)
560 led_classdev_unregister(&eeepc->tpd_led);
561 if (eeepc->led_workqueue)
562 destroy_workqueue(eeepc->led_workqueue);
567 * PCI hotplug (for wlan rfkill)
569 static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
571 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
576 static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc)
580 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
582 if (eeepc->wlan_rfkill)
583 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
585 mutex_lock(&eeepc->hotplug_lock);
587 if (eeepc->hotplug_slot) {
588 bus = pci_find_bus(0, 1);
590 pr_warning("Unable to find PCI bus 1?\n");
595 dev = pci_get_slot(bus, 0);
597 /* Device already present */
601 dev = pci_scan_single_device(bus, 0);
603 pci_bus_assign_resources(bus);
604 if (pci_bus_add_device(dev))
605 pr_err("Unable to hotplug wifi\n");
608 dev = pci_get_slot(bus, 0);
610 pci_remove_bus_device(dev);
617 mutex_unlock(&eeepc->hotplug_lock);
620 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
622 struct eeepc_laptop *eeepc = data;
624 if (event != ACPI_NOTIFY_BUS_CHECK)
627 eeepc_rfkill_hotplug(eeepc);
630 static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
636 status = acpi_get_handle(NULL, node, &handle);
638 if (ACPI_SUCCESS(status)) {
639 status = acpi_install_notify_handler(handle,
643 if (ACPI_FAILURE(status))
644 pr_warning("Failed to register notify on %s\n", node);
651 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
654 acpi_status status = AE_OK;
657 status = acpi_get_handle(NULL, node, &handle);
659 if (ACPI_SUCCESS(status)) {
660 status = acpi_remove_notify_handler(handle,
662 eeepc_rfkill_notify);
663 if (ACPI_FAILURE(status))
664 pr_err("Error removing rfkill notify handler %s\n",
669 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
672 struct eeepc_laptop *eeepc = hotplug_slot->private;
673 int val = get_acpi(eeepc, CM_ASL_WLAN);
675 if (val == 1 || val == 0)
683 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
685 kfree(hotplug_slot->info);
689 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
690 .owner = THIS_MODULE,
691 .get_adapter_status = eeepc_get_adapter_status,
692 .get_power_status = eeepc_get_adapter_status,
695 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
698 struct pci_bus *bus = pci_find_bus(0, 1);
701 pr_err("Unable to find wifi PCI bus\n");
705 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
706 if (!eeepc->hotplug_slot)
709 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
711 if (!eeepc->hotplug_slot->info)
714 eeepc->hotplug_slot->private = eeepc;
715 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
716 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
717 eeepc_get_adapter_status(eeepc->hotplug_slot,
718 &eeepc->hotplug_slot->info->adapter_status);
720 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
722 pr_err("Unable to register hotplug slot - %d\n", ret);
729 kfree(eeepc->hotplug_slot->info);
731 kfree(eeepc->hotplug_slot);
732 eeepc->hotplug_slot = NULL;
740 static int eeepc_rfkill_set(void *data, bool blocked)
742 acpi_handle handle = data;
744 return write_acpi_int(handle, NULL, !blocked);
747 static const struct rfkill_ops eeepc_rfkill_ops = {
748 .set_block = eeepc_rfkill_set,
751 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
752 struct rfkill **rfkill,
754 enum rfkill_type type, int cm)
759 result = acpi_setter_handle(eeepc, cm, &handle);
763 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
764 &eeepc_rfkill_ops, handle);
769 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
770 result = rfkill_register(*rfkill);
772 rfkill_destroy(*rfkill);
779 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
781 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
782 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
783 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
784 if (eeepc->wlan_rfkill) {
785 rfkill_unregister(eeepc->wlan_rfkill);
786 rfkill_destroy(eeepc->wlan_rfkill);
787 eeepc->wlan_rfkill = NULL;
790 * Refresh pci hotplug in case the rfkill state was changed after
791 * eeepc_unregister_rfkill_notifier()
793 eeepc_rfkill_hotplug(eeepc);
794 if (eeepc->hotplug_slot)
795 pci_hp_deregister(eeepc->hotplug_slot);
797 if (eeepc->bluetooth_rfkill) {
798 rfkill_unregister(eeepc->bluetooth_rfkill);
799 rfkill_destroy(eeepc->bluetooth_rfkill);
800 eeepc->bluetooth_rfkill = NULL;
802 if (eeepc->wwan3g_rfkill) {
803 rfkill_unregister(eeepc->wwan3g_rfkill);
804 rfkill_destroy(eeepc->wwan3g_rfkill);
805 eeepc->wwan3g_rfkill = NULL;
807 if (eeepc->wimax_rfkill) {
808 rfkill_unregister(eeepc->wimax_rfkill);
809 rfkill_destroy(eeepc->wimax_rfkill);
810 eeepc->wimax_rfkill = NULL;
814 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
818 mutex_init(&eeepc->hotplug_lock);
820 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
821 "eeepc-wlan", RFKILL_TYPE_WLAN,
824 if (result && result != -ENODEV)
827 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
828 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
831 if (result && result != -ENODEV)
834 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
835 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
838 if (result && result != -ENODEV)
841 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
842 "eeepc-wimax", RFKILL_TYPE_WIMAX,
845 if (result && result != -ENODEV)
848 if (eeepc->hotplug_disabled)
851 result = eeepc_setup_pci_hotplug(eeepc);
853 * If we get -EBUSY then something else is handling the PCI hotplug -
854 * don't fail in this case
856 if (result == -EBUSY)
859 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
860 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
861 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
863 * Refresh pci hotplug in case the rfkill state was changed during
866 eeepc_rfkill_hotplug(eeepc);
869 if (result && result != -ENODEV)
870 eeepc_rfkill_exit(eeepc);
875 * Platform driver - hibernate/resume callbacks
877 static int eeepc_hotk_thaw(struct device *device)
879 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
881 if (eeepc->wlan_rfkill) {
885 * Work around bios bug - acpi _PTS turns off the wireless led
886 * during suspend. Normally it restores it on resume, but
887 * we should kick it ourselves in case hibernation is aborted.
889 wlan = get_acpi(eeepc, CM_ASL_WLAN);
890 set_acpi(eeepc, CM_ASL_WLAN, wlan);
896 static int eeepc_hotk_restore(struct device *device)
898 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
900 /* Refresh both wlan rfkill state and pci hotplug */
901 if (eeepc->wlan_rfkill)
902 eeepc_rfkill_hotplug(eeepc);
904 if (eeepc->bluetooth_rfkill)
905 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
906 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
907 if (eeepc->wwan3g_rfkill)
908 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
909 get_acpi(eeepc, CM_ASL_3G) != 1);
910 if (eeepc->wimax_rfkill)
911 rfkill_set_sw_state(eeepc->wimax_rfkill,
912 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
917 static const struct dev_pm_ops eeepc_pm_ops = {
918 .thaw = eeepc_hotk_thaw,
919 .restore = eeepc_hotk_restore,
922 static struct platform_driver platform_driver = {
924 .name = EEEPC_LAPTOP_FILE,
925 .owner = THIS_MODULE,
934 #define EEEPC_EC_SC00 0x61
935 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
936 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
937 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
939 #define EEEPC_EC_SFB0 0xD0
940 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
942 static int eeepc_get_fan_pwm(void)
946 ec_read(EEEPC_EC_FAN_PWM, &value);
947 return value * 255 / 100;
950 static void eeepc_set_fan_pwm(int value)
952 value = SENSORS_LIMIT(value, 0, 255);
953 value = value * 100 / 255;
954 ec_write(EEEPC_EC_FAN_PWM, value);
957 static int eeepc_get_fan_rpm(void)
962 ec_read(EEEPC_EC_FAN_HRPM, &high);
963 ec_read(EEEPC_EC_FAN_LRPM, &low);
964 return high << 8 | low;
967 static int eeepc_get_fan_ctrl(void)
971 ec_read(EEEPC_EC_FAN_CTRL, &value);
973 return 1; /* manual */
975 return 2; /* automatic */
978 static void eeepc_set_fan_ctrl(int manual)
982 ec_read(EEEPC_EC_FAN_CTRL, &value);
987 ec_write(EEEPC_EC_FAN_CTRL, value);
990 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
994 rv = parse_arg(buf, count, &value);
1000 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1002 return sprintf(buf, "%d\n", get());
1005 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1006 static ssize_t show_##_name(struct device *dev, \
1007 struct device_attribute *attr, \
1010 return show_sys_hwmon(_set, buf); \
1012 static ssize_t store_##_name(struct device *dev, \
1013 struct device_attribute *attr, \
1014 const char *buf, size_t count) \
1016 return store_sys_hwmon(_get, buf, count); \
1018 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1020 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1021 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1022 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1023 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1024 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1027 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1029 return sprintf(buf, "eeepc\n");
1031 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1033 static struct attribute *hwmon_attributes[] = {
1034 &sensor_dev_attr_pwm1.dev_attr.attr,
1035 &sensor_dev_attr_fan1_input.dev_attr.attr,
1036 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1037 &sensor_dev_attr_name.dev_attr.attr,
1041 static struct attribute_group hwmon_attribute_group = {
1042 .attrs = hwmon_attributes
1045 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1047 struct device *hwmon;
1049 hwmon = eeepc->hwmon_device;
1052 sysfs_remove_group(&hwmon->kobj,
1053 &hwmon_attribute_group);
1054 hwmon_device_unregister(hwmon);
1055 eeepc->hwmon_device = NULL;
1058 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1060 struct device *hwmon;
1063 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1064 if (IS_ERR(hwmon)) {
1065 pr_err("Could not register eeepc hwmon device\n");
1066 eeepc->hwmon_device = NULL;
1067 return PTR_ERR(hwmon);
1069 eeepc->hwmon_device = hwmon;
1070 result = sysfs_create_group(&hwmon->kobj,
1071 &hwmon_attribute_group);
1073 eeepc_hwmon_exit(eeepc);
1080 static int read_brightness(struct backlight_device *bd)
1082 struct eeepc_laptop *eeepc = bl_get_data(bd);
1084 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1087 static int set_brightness(struct backlight_device *bd, int value)
1089 struct eeepc_laptop *eeepc = bl_get_data(bd);
1091 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1094 static int update_bl_status(struct backlight_device *bd)
1096 return set_brightness(bd, bd->props.brightness);
1099 static struct backlight_ops eeepcbl_ops = {
1100 .get_brightness = read_brightness,
1101 .update_status = update_bl_status,
1104 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1106 struct backlight_device *bd = eeepc->backlight_device;
1107 int old = bd->props.brightness;
1109 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1114 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1116 struct backlight_device *bd;
1118 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1119 &eeepc->platform_device->dev,
1120 eeepc, &eeepcbl_ops);
1122 pr_err("Could not register eeepc backlight device\n");
1123 eeepc->backlight_device = NULL;
1126 eeepc->backlight_device = bd;
1127 bd->props.max_brightness = 15;
1128 bd->props.brightness = read_brightness(bd);
1129 bd->props.power = FB_BLANK_UNBLANK;
1130 backlight_update_status(bd);
1134 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1136 if (eeepc->backlight_device)
1137 backlight_device_unregister(eeepc->backlight_device);
1138 eeepc->backlight_device = NULL;
1143 * Input device (i.e. hotkeys)
1145 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1147 struct input_dev *input;
1150 input = input_allocate_device();
1152 pr_info("Unable to allocate input device\n");
1156 input->name = "Asus EeePC extra buttons";
1157 input->phys = EEEPC_LAPTOP_FILE "/input0";
1158 input->id.bustype = BUS_HOST;
1159 input->dev.parent = &eeepc->platform_device->dev;
1161 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1163 pr_err("Unable to setup input device keymap\n");
1167 error = input_register_device(input);
1169 pr_err("Unable to register input device\n");
1170 goto err_free_keymap;
1173 eeepc->inputdev = input;
1177 sparse_keymap_free(input);
1179 input_free_device(input);
1183 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1185 if (eeepc->inputdev) {
1186 input_unregister_device(eeepc->inputdev);
1187 kfree(eeepc->keymap);
1194 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1196 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1199 if (event > ACPI_MAX_SYS_NOTIFY)
1201 count = eeepc->event_count[event % 128]++;
1202 acpi_bus_generate_proc_event(device, event, count);
1203 acpi_bus_generate_netlink_event(device->pnp.device_class,
1204 dev_name(&device->dev), event,
1207 /* Brightness events are special */
1208 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1210 /* Ignore them completely if the acpi video driver is used */
1211 if (eeepc->backlight_device != NULL) {
1212 int old_brightness, new_brightness;
1214 /* Update the backlight device. */
1215 old_brightness = eeepc_backlight_notify(eeepc);
1217 /* Convert event to keypress (obsolescent hack) */
1218 new_brightness = event - NOTIFY_BRN_MIN;
1220 if (new_brightness < old_brightness) {
1221 event = NOTIFY_BRN_MIN; /* brightness down */
1222 } else if (new_brightness > old_brightness) {
1223 event = NOTIFY_BRN_MAX; /* brightness up */
1226 * no change in brightness - already at min/max,
1227 * event will be desired value (or else ignored)
1230 sparse_keymap_report_event(eeepc->inputdev, event,
1234 /* Everything else is a bona-fide keypress event */
1235 sparse_keymap_report_event(eeepc->inputdev, event, 1, true);
1239 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1243 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1248 * Blacklist for setting cpufv (cpu speed).
1250 * EeePC 4G ("701") implements CFVS, but it is not supported
1251 * by the pre-installed OS, and the original option to change it
1252 * in the BIOS setup screen was removed in later versions.
1254 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1255 * this applies to all "701" models (4G/4G Surf/2G Surf).
1257 * So Asus made a deliberate decision not to support it on this model.
1258 * We have several reports that using it can cause the system to hang
1260 * The hang has also been reported on a "702" (Model name "8G"?).
1262 * We avoid dmi_check_system() / dmi_match(), because they use
1263 * substring matching. We don't want to affect the "701SD"
1264 * and "701SDX" models, because they do support S.H.E.
1266 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1267 eeepc->cpufv_disabled = true;
1268 pr_info("model %s does not officially support setting cpu "
1270 pr_info("cpufv disabled to avoid instability\n");
1274 * Blacklist for wlan hotplug
1276 * Eeepc 1005HA doesn't work like others models and don't need the
1277 * hotplug code. In fact, current hotplug code seems to unplug another
1280 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0) {
1281 eeepc->hotplug_disabled = true;
1282 pr_info("wlan hotplug disabled\n");
1286 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1290 /* Some BIOSes do not report cm although it is avaliable.
1291 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1292 if (!(eeepc->cm_supported & (1 << cm))
1293 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1294 pr_info("%s (%x) not reported by BIOS,"
1295 " enabling anyway\n", name, 1 << cm);
1296 eeepc->cm_supported |= 1 << cm;
1300 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1302 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1303 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1304 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1305 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1308 static int eeepc_acpi_init(struct eeepc_laptop *eeepc,
1309 struct acpi_device *device)
1311 unsigned int init_flags;
1314 result = acpi_bus_get_status(device);
1317 if (!device->status.present) {
1318 pr_err("Hotkey device not present, aborting\n");
1322 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1323 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1325 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1326 pr_err("Hotkey initialization failed\n");
1330 /* get control methods supported */
1331 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1332 pr_err("Get control methods supported failed\n");
1336 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1341 static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc)
1344 * If the following call to set_acpi() fails, it's because there's no
1345 * camera so we can ignore the error.
1347 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1348 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1351 static bool eeepc_device_present;
1353 static int __devinit eeepc_acpi_add(struct acpi_device *device)
1355 struct eeepc_laptop *eeepc;
1358 pr_notice(EEEPC_LAPTOP_NAME "\n");
1359 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1362 eeepc->handle = device->handle;
1363 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1364 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1365 device->driver_data = eeepc;
1367 eeepc->hotplug_disabled = hotplug_disabled;
1369 eeepc_dmi_check(eeepc);
1371 result = eeepc_acpi_init(eeepc, device);
1374 eeepc_enable_camera(eeepc);
1377 * Register the platform device first. It is used as a parent for the
1378 * sub-devices below.
1380 * Note that if there are multiple instances of this ACPI device it
1381 * will bail out, because the platform device is registered with a
1382 * fixed name. Of course it doesn't make sense to have more than one,
1383 * and machine-specific scripts find the fixed name convenient. But
1384 * It's also good for us to exclude multiple instances because both
1385 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1386 * (the EC and the wlan PCI slot respectively).
1388 result = eeepc_platform_init(eeepc);
1392 if (!acpi_video_backlight_support()) {
1393 result = eeepc_backlight_init(eeepc);
1395 goto fail_backlight;
1397 pr_info("Backlight controlled by ACPI video driver\n");
1399 result = eeepc_input_init(eeepc);
1403 result = eeepc_hwmon_init(eeepc);
1407 result = eeepc_led_init(eeepc);
1411 result = eeepc_rfkill_init(eeepc);
1415 eeepc_device_present = true;
1419 eeepc_led_exit(eeepc);
1421 eeepc_hwmon_exit(eeepc);
1423 eeepc_input_exit(eeepc);
1425 eeepc_backlight_exit(eeepc);
1427 eeepc_platform_exit(eeepc);
1434 static int eeepc_acpi_remove(struct acpi_device *device, int type)
1436 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1438 eeepc_backlight_exit(eeepc);
1439 eeepc_rfkill_exit(eeepc);
1440 eeepc_input_exit(eeepc);
1441 eeepc_hwmon_exit(eeepc);
1442 eeepc_led_exit(eeepc);
1443 eeepc_platform_exit(eeepc);
1450 static const struct acpi_device_id eeepc_device_ids[] = {
1451 {EEEPC_ACPI_HID, 0},
1454 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1456 static struct acpi_driver eeepc_acpi_driver = {
1457 .name = EEEPC_LAPTOP_NAME,
1458 .class = EEEPC_ACPI_CLASS,
1459 .owner = THIS_MODULE,
1460 .ids = eeepc_device_ids,
1461 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1463 .add = eeepc_acpi_add,
1464 .remove = eeepc_acpi_remove,
1465 .notify = eeepc_acpi_notify,
1470 static int __init eeepc_laptop_init(void)
1474 result = platform_driver_register(&platform_driver);
1478 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1480 goto fail_acpi_driver;
1482 if (!eeepc_device_present) {
1484 goto fail_no_device;
1490 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1492 platform_driver_unregister(&platform_driver);
1496 static void __exit eeepc_laptop_exit(void)
1498 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1499 platform_driver_unregister(&platform_driver);
1502 module_init(eeepc_laptop_init);
1503 module_exit(eeepc_laptop_exit);