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 <linux/acpi.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, 0444);
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 acpi_device *device; /* the device we are in */
168 struct device *hwmon_device;
169 struct backlight_device *backlight_device;
171 struct input_dev *inputdev;
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)
194 status = acpi_execute_simple_method(handle, (char *)method, val);
196 return (status == AE_OK ? 0 : -1);
199 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
202 unsigned long long result;
204 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
205 if (ACPI_FAILURE(status)) {
214 static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
216 const char *method = cm_setv[cm];
220 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
223 if (write_acpi_int(eeepc->handle, method, value))
224 pr_warn("Error writing %s\n", method);
228 static int get_acpi(struct eeepc_laptop *eeepc, int cm)
230 const char *method = cm_getv[cm];
235 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
238 if (read_acpi_int(eeepc->handle, method, &value))
239 pr_warn("Error reading %s\n", method);
243 static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
246 const char *method = cm_setv[cm];
251 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
254 status = acpi_get_handle(eeepc->handle, (char *)method,
256 if (status != AE_OK) {
257 pr_warn("Error finding %s\n", method);
267 static int parse_arg(const char *buf, unsigned long count, int *val)
271 if (sscanf(buf, "%i", val) != 1)
276 static ssize_t store_sys_acpi(struct device *dev, int cm,
277 const char *buf, size_t count)
279 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
282 rv = parse_arg(buf, count, &value);
284 value = set_acpi(eeepc, cm, value);
290 static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
292 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
293 int value = get_acpi(eeepc, cm);
297 return sprintf(buf, "%d\n", value);
300 #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
301 static ssize_t show_##_name(struct device *dev, \
302 struct device_attribute *attr, \
305 return show_sys_acpi(dev, _cm, buf); \
307 static ssize_t store_##_name(struct device *dev, \
308 struct device_attribute *attr, \
309 const char *buf, size_t count) \
311 return store_sys_acpi(dev, _cm, buf, count); \
313 static struct device_attribute dev_attr_##_name = { \
315 .name = __stringify(_name), \
317 .show = show_##_name, \
318 .store = store_##_name, \
321 EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
322 EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
323 EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
330 static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
332 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
333 c->num = (c->cur >> 8) & 0xff;
335 if (c->cur < 0 || c->num <= 0 || c->num > 12)
340 static ssize_t show_available_cpufv(struct device *dev,
341 struct device_attribute *attr,
344 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
345 struct eeepc_cpufv c;
349 if (get_cpufv(eeepc, &c))
351 for (i = 0; i < c.num; i++)
352 len += sprintf(buf + len, "%d ", i);
353 len += sprintf(buf + len, "\n");
357 static ssize_t show_cpufv(struct device *dev,
358 struct device_attribute *attr,
361 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
362 struct eeepc_cpufv c;
364 if (get_cpufv(eeepc, &c))
366 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
369 static ssize_t store_cpufv(struct device *dev,
370 struct device_attribute *attr,
371 const char *buf, size_t count)
373 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
374 struct eeepc_cpufv c;
377 if (eeepc->cpufv_disabled)
379 if (get_cpufv(eeepc, &c))
381 rv = parse_arg(buf, count, &value);
384 if (!rv || value < 0 || value >= c.num)
386 set_acpi(eeepc, CM_ASL_CPUFV, value);
390 static ssize_t show_cpufv_disabled(struct device *dev,
391 struct device_attribute *attr,
394 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
396 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
399 static ssize_t store_cpufv_disabled(struct device *dev,
400 struct device_attribute *attr,
401 const char *buf, size_t count)
403 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
406 rv = parse_arg(buf, count, &value);
412 if (eeepc->cpufv_disabled)
413 pr_warn("cpufv enabled (not officially supported "
415 eeepc->cpufv_disabled = false;
425 static struct device_attribute dev_attr_cpufv = {
433 static struct device_attribute dev_attr_available_cpufv = {
435 .name = "available_cpufv",
437 .show = show_available_cpufv
440 static struct device_attribute dev_attr_cpufv_disabled = {
442 .name = "cpufv_disabled",
444 .show = show_cpufv_disabled,
445 .store = store_cpufv_disabled
449 static struct attribute *platform_attributes[] = {
450 &dev_attr_camera.attr,
451 &dev_attr_cardr.attr,
453 &dev_attr_cpufv.attr,
454 &dev_attr_available_cpufv.attr,
455 &dev_attr_cpufv_disabled.attr,
459 static struct attribute_group platform_attribute_group = {
460 .attrs = platform_attributes
463 static int eeepc_platform_init(struct eeepc_laptop *eeepc)
467 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
468 if (!eeepc->platform_device)
470 platform_set_drvdata(eeepc->platform_device, eeepc);
472 result = platform_device_add(eeepc->platform_device);
474 goto fail_platform_device;
476 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
477 &platform_attribute_group);
483 platform_device_del(eeepc->platform_device);
484 fail_platform_device:
485 platform_device_put(eeepc->platform_device);
489 static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
491 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
492 &platform_attribute_group);
493 platform_device_unregister(eeepc->platform_device);
500 * These functions actually update the LED's, and are called from a
501 * workqueue. By doing this as separate work rather than when the LED
502 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
503 * potentially bad time, such as a timer interrupt.
505 static void tpd_led_update(struct work_struct *work)
507 struct eeepc_laptop *eeepc;
509 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
511 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
514 static void tpd_led_set(struct led_classdev *led_cdev,
515 enum led_brightness value)
517 struct eeepc_laptop *eeepc;
519 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
521 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
522 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
525 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
527 struct eeepc_laptop *eeepc;
529 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
531 return get_acpi(eeepc, CM_ASL_TPD);
534 static int eeepc_led_init(struct eeepc_laptop *eeepc)
538 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
541 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
542 if (!eeepc->led_workqueue)
544 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
546 eeepc->tpd_led.name = "eeepc::touchpad";
547 eeepc->tpd_led.brightness_set = tpd_led_set;
548 if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
549 eeepc->tpd_led.brightness_get = tpd_led_get;
550 eeepc->tpd_led.max_brightness = 1;
552 rv = led_classdev_register(&eeepc->platform_device->dev,
555 destroy_workqueue(eeepc->led_workqueue);
562 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
564 if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
565 led_classdev_unregister(&eeepc->tpd_led);
566 if (eeepc->led_workqueue)
567 destroy_workqueue(eeepc->led_workqueue);
572 * PCI hotplug (for wlan rfkill)
574 static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
576 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
581 static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
583 struct pci_dev *port;
586 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
590 if (eeepc->wlan_rfkill)
591 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
593 mutex_lock(&eeepc->hotplug_lock);
594 pci_lock_rescan_remove();
596 if (eeepc->hotplug_slot) {
597 port = acpi_get_pci_dev(handle);
599 pr_warning("Unable to find port\n");
603 bus = port->subordinate;
606 pr_warn("Unable to find PCI bus 1?\n");
610 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
611 pr_err("Unable to read PCI config space?\n");
615 absent = (l == 0xffffffff);
617 if (blocked != absent) {
618 pr_warn("BIOS says wireless lan is %s, "
619 "but the pci device is %s\n",
620 blocked ? "blocked" : "unblocked",
621 absent ? "absent" : "present");
622 pr_warn("skipped wireless hotplug as probably "
623 "inappropriate for this model\n");
628 dev = pci_get_slot(bus, 0);
630 /* Device already present */
634 dev = pci_scan_single_device(bus, 0);
636 pci_bus_assign_resources(bus);
637 if (pci_bus_add_device(dev))
638 pr_err("Unable to hotplug wifi\n");
641 dev = pci_get_slot(bus, 0);
643 pci_stop_and_remove_bus_device(dev);
652 pci_unlock_rescan_remove();
653 mutex_unlock(&eeepc->hotplug_lock);
656 static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
658 acpi_status status = AE_OK;
661 status = acpi_get_handle(NULL, node, &handle);
663 if (ACPI_SUCCESS(status))
664 eeepc_rfkill_hotplug(eeepc, handle);
667 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
669 struct eeepc_laptop *eeepc = data;
671 if (event != ACPI_NOTIFY_BUS_CHECK)
674 eeepc_rfkill_hotplug(eeepc, handle);
677 static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
683 status = acpi_get_handle(NULL, node, &handle);
685 if (ACPI_SUCCESS(status)) {
686 status = acpi_install_notify_handler(handle,
690 if (ACPI_FAILURE(status))
691 pr_warn("Failed to register notify on %s\n", node);
694 * Refresh pci hotplug in case the rfkill state was
695 * changed during setup.
697 eeepc_rfkill_hotplug(eeepc, handle);
704 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
707 acpi_status status = AE_OK;
710 status = acpi_get_handle(NULL, node, &handle);
712 if (ACPI_SUCCESS(status)) {
713 status = acpi_remove_notify_handler(handle,
715 eeepc_rfkill_notify);
716 if (ACPI_FAILURE(status))
717 pr_err("Error removing rfkill notify handler %s\n",
720 * Refresh pci hotplug in case the rfkill
721 * state was changed after
722 * eeepc_unregister_rfkill_notifier()
724 eeepc_rfkill_hotplug(eeepc, handle);
728 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
731 struct eeepc_laptop *eeepc = hotplug_slot->private;
732 int val = get_acpi(eeepc, CM_ASL_WLAN);
734 if (val == 1 || val == 0)
742 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
744 kfree(hotplug_slot->info);
748 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
749 .owner = THIS_MODULE,
750 .get_adapter_status = eeepc_get_adapter_status,
751 .get_power_status = eeepc_get_adapter_status,
754 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
757 struct pci_bus *bus = pci_find_bus(0, 1);
760 pr_err("Unable to find wifi PCI bus\n");
764 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
765 if (!eeepc->hotplug_slot)
768 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
770 if (!eeepc->hotplug_slot->info)
773 eeepc->hotplug_slot->private = eeepc;
774 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
775 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
776 eeepc_get_adapter_status(eeepc->hotplug_slot,
777 &eeepc->hotplug_slot->info->adapter_status);
779 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
781 pr_err("Unable to register hotplug slot - %d\n", ret);
788 kfree(eeepc->hotplug_slot->info);
790 kfree(eeepc->hotplug_slot);
791 eeepc->hotplug_slot = NULL;
799 static int eeepc_rfkill_set(void *data, bool blocked)
801 acpi_handle handle = data;
803 return write_acpi_int(handle, NULL, !blocked);
806 static const struct rfkill_ops eeepc_rfkill_ops = {
807 .set_block = eeepc_rfkill_set,
810 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
811 struct rfkill **rfkill,
813 enum rfkill_type type, int cm)
818 result = acpi_setter_handle(eeepc, cm, &handle);
822 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
823 &eeepc_rfkill_ops, handle);
828 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
829 result = rfkill_register(*rfkill);
831 rfkill_destroy(*rfkill);
838 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
840 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
841 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
842 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
843 if (eeepc->wlan_rfkill) {
844 rfkill_unregister(eeepc->wlan_rfkill);
845 rfkill_destroy(eeepc->wlan_rfkill);
846 eeepc->wlan_rfkill = NULL;
849 if (eeepc->hotplug_slot)
850 pci_hp_deregister(eeepc->hotplug_slot);
852 if (eeepc->bluetooth_rfkill) {
853 rfkill_unregister(eeepc->bluetooth_rfkill);
854 rfkill_destroy(eeepc->bluetooth_rfkill);
855 eeepc->bluetooth_rfkill = NULL;
857 if (eeepc->wwan3g_rfkill) {
858 rfkill_unregister(eeepc->wwan3g_rfkill);
859 rfkill_destroy(eeepc->wwan3g_rfkill);
860 eeepc->wwan3g_rfkill = NULL;
862 if (eeepc->wimax_rfkill) {
863 rfkill_unregister(eeepc->wimax_rfkill);
864 rfkill_destroy(eeepc->wimax_rfkill);
865 eeepc->wimax_rfkill = NULL;
869 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
873 mutex_init(&eeepc->hotplug_lock);
875 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
876 "eeepc-wlan", RFKILL_TYPE_WLAN,
879 if (result && result != -ENODEV)
882 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
883 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
886 if (result && result != -ENODEV)
889 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
890 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
893 if (result && result != -ENODEV)
896 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
897 "eeepc-wimax", RFKILL_TYPE_WIMAX,
900 if (result && result != -ENODEV)
903 if (eeepc->hotplug_disabled)
906 result = eeepc_setup_pci_hotplug(eeepc);
908 * If we get -EBUSY then something else is handling the PCI hotplug -
909 * don't fail in this case
911 if (result == -EBUSY)
914 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
915 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
916 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
919 if (result && result != -ENODEV)
920 eeepc_rfkill_exit(eeepc);
925 * Platform driver - hibernate/resume callbacks
927 static int eeepc_hotk_thaw(struct device *device)
929 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
931 if (eeepc->wlan_rfkill) {
935 * Work around bios bug - acpi _PTS turns off the wireless led
936 * during suspend. Normally it restores it on resume, but
937 * we should kick it ourselves in case hibernation is aborted.
939 wlan = get_acpi(eeepc, CM_ASL_WLAN);
940 set_acpi(eeepc, CM_ASL_WLAN, wlan);
946 static int eeepc_hotk_restore(struct device *device)
948 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
950 /* Refresh both wlan rfkill state and pci hotplug */
951 if (eeepc->wlan_rfkill) {
952 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P5");
953 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P6");
954 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P7");
957 if (eeepc->bluetooth_rfkill)
958 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
959 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
960 if (eeepc->wwan3g_rfkill)
961 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
962 get_acpi(eeepc, CM_ASL_3G) != 1);
963 if (eeepc->wimax_rfkill)
964 rfkill_set_sw_state(eeepc->wimax_rfkill,
965 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
970 static const struct dev_pm_ops eeepc_pm_ops = {
971 .thaw = eeepc_hotk_thaw,
972 .restore = eeepc_hotk_restore,
975 static struct platform_driver platform_driver = {
977 .name = EEEPC_LAPTOP_FILE,
978 .owner = THIS_MODULE,
987 #define EEEPC_EC_SC00 0x61
988 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
989 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
990 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
992 #define EEEPC_EC_SFB0 0xD0
993 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
995 static int eeepc_get_fan_pwm(void)
999 ec_read(EEEPC_EC_FAN_PWM, &value);
1000 return value * 255 / 100;
1003 static void eeepc_set_fan_pwm(int value)
1005 value = clamp_val(value, 0, 255);
1006 value = value * 100 / 255;
1007 ec_write(EEEPC_EC_FAN_PWM, value);
1010 static int eeepc_get_fan_rpm(void)
1015 ec_read(EEEPC_EC_FAN_HRPM, &high);
1016 ec_read(EEEPC_EC_FAN_LRPM, &low);
1017 return high << 8 | low;
1020 static int eeepc_get_fan_ctrl(void)
1024 ec_read(EEEPC_EC_FAN_CTRL, &value);
1026 return 1; /* manual */
1028 return 2; /* automatic */
1031 static void eeepc_set_fan_ctrl(int manual)
1035 ec_read(EEEPC_EC_FAN_CTRL, &value);
1040 ec_write(EEEPC_EC_FAN_CTRL, value);
1043 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1047 rv = parse_arg(buf, count, &value);
1053 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1055 return sprintf(buf, "%d\n", get());
1058 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1059 static ssize_t show_##_name(struct device *dev, \
1060 struct device_attribute *attr, \
1063 return show_sys_hwmon(_set, buf); \
1065 static ssize_t store_##_name(struct device *dev, \
1066 struct device_attribute *attr, \
1067 const char *buf, size_t count) \
1069 return store_sys_hwmon(_get, buf, count); \
1071 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1073 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1074 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1075 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1076 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1077 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1080 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1082 return sprintf(buf, "eeepc\n");
1084 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1086 static struct attribute *hwmon_attributes[] = {
1087 &sensor_dev_attr_pwm1.dev_attr.attr,
1088 &sensor_dev_attr_fan1_input.dev_attr.attr,
1089 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1090 &sensor_dev_attr_name.dev_attr.attr,
1094 static struct attribute_group hwmon_attribute_group = {
1095 .attrs = hwmon_attributes
1098 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1100 struct device *hwmon;
1102 hwmon = eeepc->hwmon_device;
1105 sysfs_remove_group(&hwmon->kobj,
1106 &hwmon_attribute_group);
1107 hwmon_device_unregister(hwmon);
1108 eeepc->hwmon_device = NULL;
1111 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1113 struct device *hwmon;
1116 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1117 if (IS_ERR(hwmon)) {
1118 pr_err("Could not register eeepc hwmon device\n");
1119 eeepc->hwmon_device = NULL;
1120 return PTR_ERR(hwmon);
1122 eeepc->hwmon_device = hwmon;
1123 result = sysfs_create_group(&hwmon->kobj,
1124 &hwmon_attribute_group);
1126 eeepc_hwmon_exit(eeepc);
1133 static int read_brightness(struct backlight_device *bd)
1135 struct eeepc_laptop *eeepc = bl_get_data(bd);
1137 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1140 static int set_brightness(struct backlight_device *bd, int value)
1142 struct eeepc_laptop *eeepc = bl_get_data(bd);
1144 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1147 static int update_bl_status(struct backlight_device *bd)
1149 return set_brightness(bd, bd->props.brightness);
1152 static const struct backlight_ops eeepcbl_ops = {
1153 .get_brightness = read_brightness,
1154 .update_status = update_bl_status,
1157 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1159 struct backlight_device *bd = eeepc->backlight_device;
1160 int old = bd->props.brightness;
1162 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1167 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1169 struct backlight_properties props;
1170 struct backlight_device *bd;
1172 memset(&props, 0, sizeof(struct backlight_properties));
1173 props.type = BACKLIGHT_PLATFORM;
1174 props.max_brightness = 15;
1175 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1176 &eeepc->platform_device->dev, eeepc,
1177 &eeepcbl_ops, &props);
1179 pr_err("Could not register eeepc backlight device\n");
1180 eeepc->backlight_device = NULL;
1183 eeepc->backlight_device = bd;
1184 bd->props.brightness = read_brightness(bd);
1185 bd->props.power = FB_BLANK_UNBLANK;
1186 backlight_update_status(bd);
1190 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1192 if (eeepc->backlight_device)
1193 backlight_device_unregister(eeepc->backlight_device);
1194 eeepc->backlight_device = NULL;
1199 * Input device (i.e. hotkeys)
1201 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1203 struct input_dev *input;
1206 input = input_allocate_device();
1210 input->name = "Asus EeePC extra buttons";
1211 input->phys = EEEPC_LAPTOP_FILE "/input0";
1212 input->id.bustype = BUS_HOST;
1213 input->dev.parent = &eeepc->platform_device->dev;
1215 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1217 pr_err("Unable to setup input device keymap\n");
1221 error = input_register_device(input);
1223 pr_err("Unable to register input device\n");
1224 goto err_free_keymap;
1227 eeepc->inputdev = input;
1231 sparse_keymap_free(input);
1233 input_free_device(input);
1237 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1239 if (eeepc->inputdev) {
1240 sparse_keymap_free(eeepc->inputdev);
1241 input_unregister_device(eeepc->inputdev);
1243 eeepc->inputdev = NULL;
1249 static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
1251 if (!eeepc->inputdev)
1253 if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
1254 pr_info("Unknown key %x pressed\n", event);
1257 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1259 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1262 if (event > ACPI_MAX_SYS_NOTIFY)
1264 count = eeepc->event_count[event % 128]++;
1265 acpi_bus_generate_netlink_event(device->pnp.device_class,
1266 dev_name(&device->dev), event,
1269 /* Brightness events are special */
1270 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1272 /* Ignore them completely if the acpi video driver is used */
1273 if (eeepc->backlight_device != NULL) {
1274 int old_brightness, new_brightness;
1276 /* Update the backlight device. */
1277 old_brightness = eeepc_backlight_notify(eeepc);
1279 /* Convert event to keypress (obsolescent hack) */
1280 new_brightness = event - NOTIFY_BRN_MIN;
1282 if (new_brightness < old_brightness) {
1283 event = NOTIFY_BRN_MIN; /* brightness down */
1284 } else if (new_brightness > old_brightness) {
1285 event = NOTIFY_BRN_MAX; /* brightness up */
1288 * no change in brightness - already at min/max,
1289 * event will be desired value (or else ignored)
1292 eeepc_input_notify(eeepc, event);
1295 /* Everything else is a bona-fide keypress event */
1296 eeepc_input_notify(eeepc, event);
1300 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1304 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1309 * Blacklist for setting cpufv (cpu speed).
1311 * EeePC 4G ("701") implements CFVS, but it is not supported
1312 * by the pre-installed OS, and the original option to change it
1313 * in the BIOS setup screen was removed in later versions.
1315 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1316 * this applies to all "701" models (4G/4G Surf/2G Surf).
1318 * So Asus made a deliberate decision not to support it on this model.
1319 * We have several reports that using it can cause the system to hang
1321 * The hang has also been reported on a "702" (Model name "8G"?).
1323 * We avoid dmi_check_system() / dmi_match(), because they use
1324 * substring matching. We don't want to affect the "701SD"
1325 * and "701SDX" models, because they do support S.H.E.
1327 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1328 eeepc->cpufv_disabled = true;
1329 pr_info("model %s does not officially support setting cpu "
1331 pr_info("cpufv disabled to avoid instability\n");
1335 * Blacklist for wlan hotplug
1337 * Eeepc 1005HA doesn't work like others models and don't need the
1338 * hotplug code. In fact, current hotplug code seems to unplug another
1341 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1342 strcmp(model, "1005PE") == 0) {
1343 eeepc->hotplug_disabled = true;
1344 pr_info("wlan hotplug disabled\n");
1348 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1352 /* Some BIOSes do not report cm although it is available.
1353 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1354 if (!(eeepc->cm_supported & (1 << cm))
1355 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1356 pr_info("%s (%x) not reported by BIOS,"
1357 " enabling anyway\n", name, 1 << cm);
1358 eeepc->cm_supported |= 1 << cm;
1362 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1364 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1365 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1366 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1367 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1370 static int eeepc_acpi_init(struct eeepc_laptop *eeepc)
1372 unsigned int init_flags;
1375 result = acpi_bus_get_status(eeepc->device);
1378 if (!eeepc->device->status.present) {
1379 pr_err("Hotkey device not present, aborting\n");
1383 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1384 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1386 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1387 pr_err("Hotkey initialization failed\n");
1391 /* get control methods supported */
1392 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1393 pr_err("Get control methods supported failed\n");
1397 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1402 static void eeepc_enable_camera(struct eeepc_laptop *eeepc)
1405 * If the following call to set_acpi() fails, it's because there's no
1406 * camera so we can ignore the error.
1408 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1409 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1412 static bool eeepc_device_present;
1414 static int eeepc_acpi_add(struct acpi_device *device)
1416 struct eeepc_laptop *eeepc;
1419 pr_notice(EEEPC_LAPTOP_NAME "\n");
1420 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1423 eeepc->handle = device->handle;
1424 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1425 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1426 device->driver_data = eeepc;
1427 eeepc->device = device;
1429 eeepc->hotplug_disabled = hotplug_disabled;
1431 eeepc_dmi_check(eeepc);
1433 result = eeepc_acpi_init(eeepc);
1436 eeepc_enable_camera(eeepc);
1439 * Register the platform device first. It is used as a parent for the
1440 * sub-devices below.
1442 * Note that if there are multiple instances of this ACPI device it
1443 * will bail out, because the platform device is registered with a
1444 * fixed name. Of course it doesn't make sense to have more than one,
1445 * and machine-specific scripts find the fixed name convenient. But
1446 * It's also good for us to exclude multiple instances because both
1447 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1448 * (the EC and the wlan PCI slot respectively).
1450 result = eeepc_platform_init(eeepc);
1454 if (!acpi_video_backlight_support()) {
1455 result = eeepc_backlight_init(eeepc);
1457 goto fail_backlight;
1459 pr_info("Backlight controlled by ACPI video driver\n");
1461 result = eeepc_input_init(eeepc);
1465 result = eeepc_hwmon_init(eeepc);
1469 result = eeepc_led_init(eeepc);
1473 result = eeepc_rfkill_init(eeepc);
1477 eeepc_device_present = true;
1481 eeepc_led_exit(eeepc);
1483 eeepc_hwmon_exit(eeepc);
1485 eeepc_input_exit(eeepc);
1487 eeepc_backlight_exit(eeepc);
1489 eeepc_platform_exit(eeepc);
1496 static int eeepc_acpi_remove(struct acpi_device *device)
1498 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1500 eeepc_backlight_exit(eeepc);
1501 eeepc_rfkill_exit(eeepc);
1502 eeepc_input_exit(eeepc);
1503 eeepc_hwmon_exit(eeepc);
1504 eeepc_led_exit(eeepc);
1505 eeepc_platform_exit(eeepc);
1512 static const struct acpi_device_id eeepc_device_ids[] = {
1513 {EEEPC_ACPI_HID, 0},
1516 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1518 static struct acpi_driver eeepc_acpi_driver = {
1519 .name = EEEPC_LAPTOP_NAME,
1520 .class = EEEPC_ACPI_CLASS,
1521 .owner = THIS_MODULE,
1522 .ids = eeepc_device_ids,
1523 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1525 .add = eeepc_acpi_add,
1526 .remove = eeepc_acpi_remove,
1527 .notify = eeepc_acpi_notify,
1532 static int __init eeepc_laptop_init(void)
1536 result = platform_driver_register(&platform_driver);
1540 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1542 goto fail_acpi_driver;
1544 if (!eeepc_device_present) {
1546 goto fail_no_device;
1552 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1554 platform_driver_unregister(&platform_driver);
1558 static void __exit eeepc_laptop_exit(void)
1560 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1561 platform_driver_unregister(&platform_driver);
1564 module_init(eeepc_laptop_init);
1565 module_exit(eeepc_laptop_exit);