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 <linux/slab.h>
31 #include <acpi/acpi_drivers.h>
32 #include <acpi/acpi_bus.h>
33 #include <linux/uaccess.h>
34 #include <linux/input.h>
35 #include <linux/input/sparse-keymap.h>
36 #include <linux/rfkill.h>
37 #include <linux/pci.h>
38 #include <linux/pci_hotplug.h>
39 #include <linux/leds.h>
40 #include <linux/dmi.h>
42 #define EEEPC_LAPTOP_VERSION "0.1"
43 #define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver"
44 #define EEEPC_LAPTOP_FILE "eeepc"
46 #define EEEPC_ACPI_CLASS "hotkey"
47 #define EEEPC_ACPI_DEVICE_NAME "Hotkey"
48 #define EEEPC_ACPI_HID "ASUS010"
50 MODULE_AUTHOR("Corentin Chary, Eric Cooper");
51 MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
52 MODULE_LICENSE("GPL");
54 static bool hotplug_disabled;
56 module_param(hotplug_disabled, bool, 0644);
57 MODULE_PARM_DESC(hotplug_disabled,
58 "Disable hotplug for wireless device. "
59 "If your laptop need that, please report to "
60 "acpi4asus-user@lists.sourceforge.net.");
63 * Definitions for Asus EeePC
65 #define NOTIFY_BRN_MIN 0x20
66 #define NOTIFY_BRN_MAX 0x2f
69 DISABLE_ASL_WLAN = 0x0001,
70 DISABLE_ASL_BLUETOOTH = 0x0002,
71 DISABLE_ASL_IRDA = 0x0004,
72 DISABLE_ASL_CAMERA = 0x0008,
73 DISABLE_ASL_TV = 0x0010,
74 DISABLE_ASL_GPS = 0x0020,
75 DISABLE_ASL_DISPLAYSWITCH = 0x0040,
76 DISABLE_ASL_MODEM = 0x0080,
77 DISABLE_ASL_CARDREADER = 0x0100,
78 DISABLE_ASL_3G = 0x0200,
79 DISABLE_ASL_WIMAX = 0x0400,
80 DISABLE_ASL_HWCF = 0x0800
97 CM_ASL_CPUTEMPERATURE,
110 CM_ASL_PANELPOWER, /*P901*/
114 static const char *cm_getv[] = {
115 "WLDG", "BTHG", NULL, NULL,
116 "CAMG", NULL, NULL, NULL,
117 NULL, "PBLG", NULL, NULL,
118 "CFVG", NULL, NULL, NULL,
119 "USBG", NULL, NULL, "MODG",
120 "CRDG", "M3GG", "WIMG", "HWCF",
121 "LIDG", "TYPE", "PBPG", "TPDG"
124 static const char *cm_setv[] = {
125 "WLDS", "BTHS", NULL, NULL,
126 "CAMS", NULL, NULL, NULL,
127 "SDSP", "PBLS", "HDPS", NULL,
128 "CFVS", NULL, NULL, NULL,
129 "USBG", NULL, NULL, "MODS",
130 "CRDS", "M3GS", "WIMS", NULL,
131 NULL, NULL, "PBPS", "TPDS"
134 static const struct key_entry eeepc_keymap[] = {
135 { KE_KEY, 0x10, { KEY_WLAN } },
136 { KE_KEY, 0x11, { KEY_WLAN } },
137 { KE_KEY, 0x12, { KEY_PROG1 } },
138 { KE_KEY, 0x13, { KEY_MUTE } },
139 { KE_KEY, 0x14, { KEY_VOLUMEDOWN } },
140 { KE_KEY, 0x15, { KEY_VOLUMEUP } },
141 { KE_KEY, 0x16, { KEY_DISPLAY_OFF } },
142 { KE_KEY, 0x1a, { KEY_COFFEE } },
143 { KE_KEY, 0x1b, { KEY_ZOOM } },
144 { KE_KEY, 0x1c, { KEY_PROG2 } },
145 { KE_KEY, 0x1d, { KEY_PROG3 } },
146 { KE_KEY, NOTIFY_BRN_MIN, { KEY_BRIGHTNESSDOWN } },
147 { KE_KEY, NOTIFY_BRN_MAX, { KEY_BRIGHTNESSUP } },
148 { KE_KEY, 0x30, { KEY_SWITCHVIDEOMODE } },
149 { KE_KEY, 0x31, { KEY_SWITCHVIDEOMODE } },
150 { KE_KEY, 0x32, { KEY_SWITCHVIDEOMODE } },
151 { KE_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */
152 { KE_KEY, 0x38, { KEY_F14 } },
157 * This is the main structure, we can use it to store useful information
159 struct eeepc_laptop {
160 acpi_handle handle; /* the handle of the acpi device */
161 u32 cm_supported; /* the control methods supported
164 bool hotplug_disabled;
165 u16 event_count[128]; /* count for each event */
167 struct platform_device *platform_device;
168 struct device *hwmon_device;
169 struct backlight_device *backlight_device;
171 struct input_dev *inputdev;
172 struct key_entry *keymap;
174 struct rfkill *wlan_rfkill;
175 struct rfkill *bluetooth_rfkill;
176 struct rfkill *wwan3g_rfkill;
177 struct rfkill *wimax_rfkill;
179 struct hotplug_slot *hotplug_slot;
180 struct mutex hotplug_lock;
182 struct led_classdev tpd_led;
184 struct workqueue_struct *led_workqueue;
185 struct work_struct tpd_led_work;
191 static int write_acpi_int(acpi_handle handle, const char *method, int val)
193 struct acpi_object_list params;
194 union acpi_object in_obj;
198 params.pointer = &in_obj;
199 in_obj.type = ACPI_TYPE_INTEGER;
200 in_obj.integer.value = val;
202 status = acpi_evaluate_object(handle, (char *)method, ¶ms, NULL);
203 return (status == AE_OK ? 0 : -1);
206 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
209 unsigned long long result;
211 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
212 if (ACPI_FAILURE(status)) {
221 static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
223 const char *method = cm_setv[cm];
227 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
230 if (write_acpi_int(eeepc->handle, method, value))
231 pr_warning("Error writing %s\n", method);
235 static int get_acpi(struct eeepc_laptop *eeepc, int cm)
237 const char *method = cm_getv[cm];
242 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
245 if (read_acpi_int(eeepc->handle, method, &value))
246 pr_warning("Error reading %s\n", method);
250 static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
253 const char *method = cm_setv[cm];
258 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
261 status = acpi_get_handle(eeepc->handle, (char *)method,
263 if (status != AE_OK) {
264 pr_warning("Error finding %s\n", method);
274 static int parse_arg(const char *buf, unsigned long count, int *val)
278 if (sscanf(buf, "%i", val) != 1)
283 static ssize_t store_sys_acpi(struct device *dev, int cm,
284 const char *buf, size_t count)
286 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
289 rv = parse_arg(buf, count, &value);
291 value = set_acpi(eeepc, cm, value);
297 static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
299 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
300 int value = get_acpi(eeepc, cm);
304 return sprintf(buf, "%d\n", value);
307 #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
308 static ssize_t show_##_name(struct device *dev, \
309 struct device_attribute *attr, \
312 return show_sys_acpi(dev, _cm, buf); \
314 static ssize_t store_##_name(struct device *dev, \
315 struct device_attribute *attr, \
316 const char *buf, size_t count) \
318 return store_sys_acpi(dev, _cm, buf, count); \
320 static struct device_attribute dev_attr_##_name = { \
322 .name = __stringify(_name), \
324 .show = show_##_name, \
325 .store = store_##_name, \
328 EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
329 EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
330 EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
337 static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
339 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
340 c->num = (c->cur >> 8) & 0xff;
342 if (c->cur < 0 || c->num <= 0 || c->num > 12)
347 static ssize_t show_available_cpufv(struct device *dev,
348 struct device_attribute *attr,
351 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
352 struct eeepc_cpufv c;
356 if (get_cpufv(eeepc, &c))
358 for (i = 0; i < c.num; i++)
359 len += sprintf(buf + len, "%d ", i);
360 len += sprintf(buf + len, "\n");
364 static ssize_t show_cpufv(struct device *dev,
365 struct device_attribute *attr,
368 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
369 struct eeepc_cpufv c;
371 if (get_cpufv(eeepc, &c))
373 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
376 static ssize_t store_cpufv(struct device *dev,
377 struct device_attribute *attr,
378 const char *buf, size_t count)
380 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
381 struct eeepc_cpufv c;
384 if (eeepc->cpufv_disabled)
386 if (get_cpufv(eeepc, &c))
388 rv = parse_arg(buf, count, &value);
391 if (!rv || value < 0 || value >= c.num)
393 set_acpi(eeepc, CM_ASL_CPUFV, value);
397 static ssize_t show_cpufv_disabled(struct device *dev,
398 struct device_attribute *attr,
401 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
403 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
406 static ssize_t store_cpufv_disabled(struct device *dev,
407 struct device_attribute *attr,
408 const char *buf, size_t count)
410 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
413 rv = parse_arg(buf, count, &value);
419 if (eeepc->cpufv_disabled)
420 pr_warning("cpufv enabled (not officially supported "
422 eeepc->cpufv_disabled = false;
432 static struct device_attribute dev_attr_cpufv = {
440 static struct device_attribute dev_attr_available_cpufv = {
442 .name = "available_cpufv",
444 .show = show_available_cpufv
447 static struct device_attribute dev_attr_cpufv_disabled = {
449 .name = "cpufv_disabled",
451 .show = show_cpufv_disabled,
452 .store = store_cpufv_disabled
456 static struct attribute *platform_attributes[] = {
457 &dev_attr_camera.attr,
458 &dev_attr_cardr.attr,
460 &dev_attr_cpufv.attr,
461 &dev_attr_available_cpufv.attr,
462 &dev_attr_cpufv_disabled.attr,
466 static struct attribute_group platform_attribute_group = {
467 .attrs = platform_attributes
470 static int eeepc_platform_init(struct eeepc_laptop *eeepc)
474 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
475 if (!eeepc->platform_device)
477 platform_set_drvdata(eeepc->platform_device, eeepc);
479 result = platform_device_add(eeepc->platform_device);
481 goto fail_platform_device;
483 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
484 &platform_attribute_group);
490 platform_device_del(eeepc->platform_device);
491 fail_platform_device:
492 platform_device_put(eeepc->platform_device);
496 static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
498 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
499 &platform_attribute_group);
500 platform_device_unregister(eeepc->platform_device);
507 * These functions actually update the LED's, and are called from a
508 * workqueue. By doing this as separate work rather than when the LED
509 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
510 * potentially bad time, such as a timer interrupt.
512 static void tpd_led_update(struct work_struct *work)
514 struct eeepc_laptop *eeepc;
516 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
518 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
521 static void tpd_led_set(struct led_classdev *led_cdev,
522 enum led_brightness value)
524 struct eeepc_laptop *eeepc;
526 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
528 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
529 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
532 static int eeepc_led_init(struct eeepc_laptop *eeepc)
536 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
539 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
540 if (!eeepc->led_workqueue)
542 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
544 eeepc->tpd_led.name = "eeepc::touchpad";
545 eeepc->tpd_led.brightness_set = tpd_led_set;
546 eeepc->tpd_led.max_brightness = 1;
548 rv = led_classdev_register(&eeepc->platform_device->dev,
551 destroy_workqueue(eeepc->led_workqueue);
558 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
560 if (eeepc->tpd_led.dev)
561 led_classdev_unregister(&eeepc->tpd_led);
562 if (eeepc->led_workqueue)
563 destroy_workqueue(eeepc->led_workqueue);
568 * PCI hotplug (for wlan rfkill)
570 static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
572 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
577 static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc)
581 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
585 if (eeepc->wlan_rfkill)
586 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
588 mutex_lock(&eeepc->hotplug_lock);
590 if (eeepc->hotplug_slot) {
591 bus = pci_find_bus(0, 1);
593 pr_warning("Unable to find PCI bus 1?\n");
597 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
598 pr_err("Unable to read PCI config space?\n");
601 absent = (l == 0xffffffff);
603 if (blocked != absent) {
604 pr_warning("BIOS says wireless lan is %s, "
605 "but the pci device is %s\n",
606 blocked ? "blocked" : "unblocked",
607 absent ? "absent" : "present");
608 pr_warning("skipped wireless hotplug as probably "
609 "inappropriate for this model\n");
614 dev = pci_get_slot(bus, 0);
616 /* Device already present */
620 dev = pci_scan_single_device(bus, 0);
622 pci_bus_assign_resources(bus);
623 if (pci_bus_add_device(dev))
624 pr_err("Unable to hotplug wifi\n");
627 dev = pci_get_slot(bus, 0);
629 pci_remove_bus_device(dev);
636 mutex_unlock(&eeepc->hotplug_lock);
639 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
641 struct eeepc_laptop *eeepc = data;
643 if (event != ACPI_NOTIFY_BUS_CHECK)
646 eeepc_rfkill_hotplug(eeepc);
649 static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
655 status = acpi_get_handle(NULL, node, &handle);
657 if (ACPI_SUCCESS(status)) {
658 status = acpi_install_notify_handler(handle,
662 if (ACPI_FAILURE(status))
663 pr_warning("Failed to register notify on %s\n", node);
670 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
673 acpi_status status = AE_OK;
676 status = acpi_get_handle(NULL, node, &handle);
678 if (ACPI_SUCCESS(status)) {
679 status = acpi_remove_notify_handler(handle,
681 eeepc_rfkill_notify);
682 if (ACPI_FAILURE(status))
683 pr_err("Error removing rfkill notify handler %s\n",
688 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
691 struct eeepc_laptop *eeepc = hotplug_slot->private;
692 int val = get_acpi(eeepc, CM_ASL_WLAN);
694 if (val == 1 || val == 0)
702 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
704 kfree(hotplug_slot->info);
708 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
709 .owner = THIS_MODULE,
710 .get_adapter_status = eeepc_get_adapter_status,
711 .get_power_status = eeepc_get_adapter_status,
714 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
717 struct pci_bus *bus = pci_find_bus(0, 1);
720 pr_err("Unable to find wifi PCI bus\n");
724 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
725 if (!eeepc->hotplug_slot)
728 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
730 if (!eeepc->hotplug_slot->info)
733 eeepc->hotplug_slot->private = eeepc;
734 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
735 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
736 eeepc_get_adapter_status(eeepc->hotplug_slot,
737 &eeepc->hotplug_slot->info->adapter_status);
739 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
741 pr_err("Unable to register hotplug slot - %d\n", ret);
748 kfree(eeepc->hotplug_slot->info);
750 kfree(eeepc->hotplug_slot);
751 eeepc->hotplug_slot = NULL;
759 static int eeepc_rfkill_set(void *data, bool blocked)
761 acpi_handle handle = data;
763 return write_acpi_int(handle, NULL, !blocked);
766 static const struct rfkill_ops eeepc_rfkill_ops = {
767 .set_block = eeepc_rfkill_set,
770 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
771 struct rfkill **rfkill,
773 enum rfkill_type type, int cm)
778 result = acpi_setter_handle(eeepc, cm, &handle);
782 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
783 &eeepc_rfkill_ops, handle);
788 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
789 result = rfkill_register(*rfkill);
791 rfkill_destroy(*rfkill);
798 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
800 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
801 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
802 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
803 if (eeepc->wlan_rfkill) {
804 rfkill_unregister(eeepc->wlan_rfkill);
805 rfkill_destroy(eeepc->wlan_rfkill);
806 eeepc->wlan_rfkill = NULL;
809 * Refresh pci hotplug in case the rfkill state was changed after
810 * eeepc_unregister_rfkill_notifier()
812 eeepc_rfkill_hotplug(eeepc);
813 if (eeepc->hotplug_slot)
814 pci_hp_deregister(eeepc->hotplug_slot);
816 if (eeepc->bluetooth_rfkill) {
817 rfkill_unregister(eeepc->bluetooth_rfkill);
818 rfkill_destroy(eeepc->bluetooth_rfkill);
819 eeepc->bluetooth_rfkill = NULL;
821 if (eeepc->wwan3g_rfkill) {
822 rfkill_unregister(eeepc->wwan3g_rfkill);
823 rfkill_destroy(eeepc->wwan3g_rfkill);
824 eeepc->wwan3g_rfkill = NULL;
826 if (eeepc->wimax_rfkill) {
827 rfkill_unregister(eeepc->wimax_rfkill);
828 rfkill_destroy(eeepc->wimax_rfkill);
829 eeepc->wimax_rfkill = NULL;
833 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
837 mutex_init(&eeepc->hotplug_lock);
839 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
840 "eeepc-wlan", RFKILL_TYPE_WLAN,
843 if (result && result != -ENODEV)
846 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
847 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
850 if (result && result != -ENODEV)
853 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
854 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
857 if (result && result != -ENODEV)
860 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
861 "eeepc-wimax", RFKILL_TYPE_WIMAX,
864 if (result && result != -ENODEV)
867 if (eeepc->hotplug_disabled)
870 result = eeepc_setup_pci_hotplug(eeepc);
872 * If we get -EBUSY then something else is handling the PCI hotplug -
873 * don't fail in this case
875 if (result == -EBUSY)
878 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
879 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
880 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
882 * Refresh pci hotplug in case the rfkill state was changed during
885 eeepc_rfkill_hotplug(eeepc);
888 if (result && result != -ENODEV)
889 eeepc_rfkill_exit(eeepc);
894 * Platform driver - hibernate/resume callbacks
896 static int eeepc_hotk_thaw(struct device *device)
898 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
900 if (eeepc->wlan_rfkill) {
904 * Work around bios bug - acpi _PTS turns off the wireless led
905 * during suspend. Normally it restores it on resume, but
906 * we should kick it ourselves in case hibernation is aborted.
908 wlan = get_acpi(eeepc, CM_ASL_WLAN);
909 set_acpi(eeepc, CM_ASL_WLAN, wlan);
915 static int eeepc_hotk_restore(struct device *device)
917 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
919 /* Refresh both wlan rfkill state and pci hotplug */
920 if (eeepc->wlan_rfkill)
921 eeepc_rfkill_hotplug(eeepc);
923 if (eeepc->bluetooth_rfkill)
924 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
925 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
926 if (eeepc->wwan3g_rfkill)
927 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
928 get_acpi(eeepc, CM_ASL_3G) != 1);
929 if (eeepc->wimax_rfkill)
930 rfkill_set_sw_state(eeepc->wimax_rfkill,
931 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
936 static const struct dev_pm_ops eeepc_pm_ops = {
937 .thaw = eeepc_hotk_thaw,
938 .restore = eeepc_hotk_restore,
941 static struct platform_driver platform_driver = {
943 .name = EEEPC_LAPTOP_FILE,
944 .owner = THIS_MODULE,
953 #define EEEPC_EC_SC00 0x61
954 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
955 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
956 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
958 #define EEEPC_EC_SFB0 0xD0
959 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
961 static int eeepc_get_fan_pwm(void)
965 ec_read(EEEPC_EC_FAN_PWM, &value);
966 return value * 255 / 100;
969 static void eeepc_set_fan_pwm(int value)
971 value = SENSORS_LIMIT(value, 0, 255);
972 value = value * 100 / 255;
973 ec_write(EEEPC_EC_FAN_PWM, value);
976 static int eeepc_get_fan_rpm(void)
981 ec_read(EEEPC_EC_FAN_HRPM, &high);
982 ec_read(EEEPC_EC_FAN_LRPM, &low);
983 return high << 8 | low;
986 static int eeepc_get_fan_ctrl(void)
990 ec_read(EEEPC_EC_FAN_CTRL, &value);
992 return 1; /* manual */
994 return 2; /* automatic */
997 static void eeepc_set_fan_ctrl(int manual)
1001 ec_read(EEEPC_EC_FAN_CTRL, &value);
1006 ec_write(EEEPC_EC_FAN_CTRL, value);
1009 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1013 rv = parse_arg(buf, count, &value);
1019 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1021 return sprintf(buf, "%d\n", get());
1024 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1025 static ssize_t show_##_name(struct device *dev, \
1026 struct device_attribute *attr, \
1029 return show_sys_hwmon(_set, buf); \
1031 static ssize_t store_##_name(struct device *dev, \
1032 struct device_attribute *attr, \
1033 const char *buf, size_t count) \
1035 return store_sys_hwmon(_get, buf, count); \
1037 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1039 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1040 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1041 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1042 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1043 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1046 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1048 return sprintf(buf, "eeepc\n");
1050 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1052 static struct attribute *hwmon_attributes[] = {
1053 &sensor_dev_attr_pwm1.dev_attr.attr,
1054 &sensor_dev_attr_fan1_input.dev_attr.attr,
1055 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1056 &sensor_dev_attr_name.dev_attr.attr,
1060 static struct attribute_group hwmon_attribute_group = {
1061 .attrs = hwmon_attributes
1064 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1066 struct device *hwmon;
1068 hwmon = eeepc->hwmon_device;
1071 sysfs_remove_group(&hwmon->kobj,
1072 &hwmon_attribute_group);
1073 hwmon_device_unregister(hwmon);
1074 eeepc->hwmon_device = NULL;
1077 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1079 struct device *hwmon;
1082 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1083 if (IS_ERR(hwmon)) {
1084 pr_err("Could not register eeepc hwmon device\n");
1085 eeepc->hwmon_device = NULL;
1086 return PTR_ERR(hwmon);
1088 eeepc->hwmon_device = hwmon;
1089 result = sysfs_create_group(&hwmon->kobj,
1090 &hwmon_attribute_group);
1092 eeepc_hwmon_exit(eeepc);
1099 static int read_brightness(struct backlight_device *bd)
1101 struct eeepc_laptop *eeepc = bl_get_data(bd);
1103 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1106 static int set_brightness(struct backlight_device *bd, int value)
1108 struct eeepc_laptop *eeepc = bl_get_data(bd);
1110 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1113 static int update_bl_status(struct backlight_device *bd)
1115 return set_brightness(bd, bd->props.brightness);
1118 static struct backlight_ops eeepcbl_ops = {
1119 .get_brightness = read_brightness,
1120 .update_status = update_bl_status,
1123 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1125 struct backlight_device *bd = eeepc->backlight_device;
1126 int old = bd->props.brightness;
1128 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1133 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1135 struct backlight_properties props;
1136 struct backlight_device *bd;
1138 memset(&props, 0, sizeof(struct backlight_properties));
1139 props.max_brightness = 15;
1140 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1141 &eeepc->platform_device->dev, eeepc,
1142 &eeepcbl_ops, &props);
1144 pr_err("Could not register eeepc backlight device\n");
1145 eeepc->backlight_device = NULL;
1148 eeepc->backlight_device = bd;
1149 bd->props.brightness = read_brightness(bd);
1150 bd->props.power = FB_BLANK_UNBLANK;
1151 backlight_update_status(bd);
1155 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1157 if (eeepc->backlight_device)
1158 backlight_device_unregister(eeepc->backlight_device);
1159 eeepc->backlight_device = NULL;
1164 * Input device (i.e. hotkeys)
1166 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1168 struct input_dev *input;
1171 input = input_allocate_device();
1173 pr_info("Unable to allocate input device\n");
1177 input->name = "Asus EeePC extra buttons";
1178 input->phys = EEEPC_LAPTOP_FILE "/input0";
1179 input->id.bustype = BUS_HOST;
1180 input->dev.parent = &eeepc->platform_device->dev;
1182 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1184 pr_err("Unable to setup input device keymap\n");
1188 error = input_register_device(input);
1190 pr_err("Unable to register input device\n");
1191 goto err_free_keymap;
1194 eeepc->inputdev = input;
1198 sparse_keymap_free(input);
1200 input_free_device(input);
1204 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1206 if (eeepc->inputdev) {
1207 input_unregister_device(eeepc->inputdev);
1208 kfree(eeepc->keymap);
1215 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1217 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1220 if (event > ACPI_MAX_SYS_NOTIFY)
1222 count = eeepc->event_count[event % 128]++;
1223 acpi_bus_generate_proc_event(device, event, count);
1224 acpi_bus_generate_netlink_event(device->pnp.device_class,
1225 dev_name(&device->dev), event,
1228 /* Brightness events are special */
1229 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1231 /* Ignore them completely if the acpi video driver is used */
1232 if (eeepc->backlight_device != NULL) {
1233 int old_brightness, new_brightness;
1235 /* Update the backlight device. */
1236 old_brightness = eeepc_backlight_notify(eeepc);
1238 /* Convert event to keypress (obsolescent hack) */
1239 new_brightness = event - NOTIFY_BRN_MIN;
1241 if (new_brightness < old_brightness) {
1242 event = NOTIFY_BRN_MIN; /* brightness down */
1243 } else if (new_brightness > old_brightness) {
1244 event = NOTIFY_BRN_MAX; /* brightness up */
1247 * no change in brightness - already at min/max,
1248 * event will be desired value (or else ignored)
1251 sparse_keymap_report_event(eeepc->inputdev, event,
1255 /* Everything else is a bona-fide keypress event */
1256 sparse_keymap_report_event(eeepc->inputdev, event, 1, true);
1260 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1264 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1269 * Blacklist for setting cpufv (cpu speed).
1271 * EeePC 4G ("701") implements CFVS, but it is not supported
1272 * by the pre-installed OS, and the original option to change it
1273 * in the BIOS setup screen was removed in later versions.
1275 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1276 * this applies to all "701" models (4G/4G Surf/2G Surf).
1278 * So Asus made a deliberate decision not to support it on this model.
1279 * We have several reports that using it can cause the system to hang
1281 * The hang has also been reported on a "702" (Model name "8G"?).
1283 * We avoid dmi_check_system() / dmi_match(), because they use
1284 * substring matching. We don't want to affect the "701SD"
1285 * and "701SDX" models, because they do support S.H.E.
1287 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1288 eeepc->cpufv_disabled = true;
1289 pr_info("model %s does not officially support setting cpu "
1291 pr_info("cpufv disabled to avoid instability\n");
1295 * Blacklist for wlan hotplug
1297 * Eeepc 1005HA doesn't work like others models and don't need the
1298 * hotplug code. In fact, current hotplug code seems to unplug another
1301 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1302 strcmp(model, "1005PE") == 0) {
1303 eeepc->hotplug_disabled = true;
1304 pr_info("wlan hotplug disabled\n");
1308 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1312 /* Some BIOSes do not report cm although it is avaliable.
1313 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1314 if (!(eeepc->cm_supported & (1 << cm))
1315 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1316 pr_info("%s (%x) not reported by BIOS,"
1317 " enabling anyway\n", name, 1 << cm);
1318 eeepc->cm_supported |= 1 << cm;
1322 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1324 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1325 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1326 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1327 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1330 static int eeepc_acpi_init(struct eeepc_laptop *eeepc,
1331 struct acpi_device *device)
1333 unsigned int init_flags;
1336 result = acpi_bus_get_status(device);
1339 if (!device->status.present) {
1340 pr_err("Hotkey device not present, aborting\n");
1344 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1345 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1347 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1348 pr_err("Hotkey initialization failed\n");
1352 /* get control methods supported */
1353 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1354 pr_err("Get control methods supported failed\n");
1358 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1363 static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc)
1366 * If the following call to set_acpi() fails, it's because there's no
1367 * camera so we can ignore the error.
1369 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1370 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1373 static bool eeepc_device_present;
1375 static int __devinit eeepc_acpi_add(struct acpi_device *device)
1377 struct eeepc_laptop *eeepc;
1380 pr_notice(EEEPC_LAPTOP_NAME "\n");
1381 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1384 eeepc->handle = device->handle;
1385 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1386 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1387 device->driver_data = eeepc;
1389 eeepc->hotplug_disabled = hotplug_disabled;
1391 eeepc_dmi_check(eeepc);
1393 result = eeepc_acpi_init(eeepc, device);
1396 eeepc_enable_camera(eeepc);
1399 * Register the platform device first. It is used as a parent for the
1400 * sub-devices below.
1402 * Note that if there are multiple instances of this ACPI device it
1403 * will bail out, because the platform device is registered with a
1404 * fixed name. Of course it doesn't make sense to have more than one,
1405 * and machine-specific scripts find the fixed name convenient. But
1406 * It's also good for us to exclude multiple instances because both
1407 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1408 * (the EC and the wlan PCI slot respectively).
1410 result = eeepc_platform_init(eeepc);
1414 if (!acpi_video_backlight_support()) {
1415 result = eeepc_backlight_init(eeepc);
1417 goto fail_backlight;
1419 pr_info("Backlight controlled by ACPI video driver\n");
1421 result = eeepc_input_init(eeepc);
1425 result = eeepc_hwmon_init(eeepc);
1429 result = eeepc_led_init(eeepc);
1433 result = eeepc_rfkill_init(eeepc);
1437 eeepc_device_present = true;
1441 eeepc_led_exit(eeepc);
1443 eeepc_hwmon_exit(eeepc);
1445 eeepc_input_exit(eeepc);
1447 eeepc_backlight_exit(eeepc);
1449 eeepc_platform_exit(eeepc);
1456 static int eeepc_acpi_remove(struct acpi_device *device, int type)
1458 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1460 eeepc_backlight_exit(eeepc);
1461 eeepc_rfkill_exit(eeepc);
1462 eeepc_input_exit(eeepc);
1463 eeepc_hwmon_exit(eeepc);
1464 eeepc_led_exit(eeepc);
1465 eeepc_platform_exit(eeepc);
1472 static const struct acpi_device_id eeepc_device_ids[] = {
1473 {EEEPC_ACPI_HID, 0},
1476 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1478 static struct acpi_driver eeepc_acpi_driver = {
1479 .name = EEEPC_LAPTOP_NAME,
1480 .class = EEEPC_ACPI_CLASS,
1481 .owner = THIS_MODULE,
1482 .ids = eeepc_device_ids,
1483 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1485 .add = eeepc_acpi_add,
1486 .remove = eeepc_acpi_remove,
1487 .notify = eeepc_acpi_notify,
1492 static int __init eeepc_laptop_init(void)
1496 result = platform_driver_register(&platform_driver);
1500 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1502 goto fail_acpi_driver;
1504 if (!eeepc_device_present) {
1506 goto fail_no_device;
1512 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1514 platform_driver_unregister(&platform_driver);
1518 static void __exit eeepc_laptop_exit(void)
1520 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1521 platform_driver_unregister(&platform_driver);
1524 module_init(eeepc_laptop_init);
1525 module_exit(eeepc_laptop_exit);