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, 0444);
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 acpi_device *device; /* the device we are in */
169 struct device *hwmon_device;
170 struct backlight_device *backlight_device;
172 struct input_dev *inputdev;
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_warn("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_warn("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_warn("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_warn("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 enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
534 struct eeepc_laptop *eeepc;
536 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
538 return get_acpi(eeepc, CM_ASL_TPD);
541 static int eeepc_led_init(struct eeepc_laptop *eeepc)
545 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
548 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
549 if (!eeepc->led_workqueue)
551 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
553 eeepc->tpd_led.name = "eeepc::touchpad";
554 eeepc->tpd_led.brightness_set = tpd_led_set;
555 if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
556 eeepc->tpd_led.brightness_get = tpd_led_get;
557 eeepc->tpd_led.max_brightness = 1;
559 rv = led_classdev_register(&eeepc->platform_device->dev,
562 destroy_workqueue(eeepc->led_workqueue);
569 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
571 if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
572 led_classdev_unregister(&eeepc->tpd_led);
573 if (eeepc->led_workqueue)
574 destroy_workqueue(eeepc->led_workqueue);
579 * PCI hotplug (for wlan rfkill)
581 static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
583 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
588 static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
590 struct pci_dev *port;
593 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
597 if (eeepc->wlan_rfkill)
598 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
600 mutex_lock(&eeepc->hotplug_lock);
602 if (eeepc->hotplug_slot) {
603 port = acpi_get_pci_dev(handle);
605 pr_warning("Unable to find port\n");
609 bus = port->subordinate;
612 pr_warn("Unable to find PCI bus 1?\n");
616 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
617 pr_err("Unable to read PCI config space?\n");
621 absent = (l == 0xffffffff);
623 if (blocked != absent) {
624 pr_warn("BIOS says wireless lan is %s, "
625 "but the pci device is %s\n",
626 blocked ? "blocked" : "unblocked",
627 absent ? "absent" : "present");
628 pr_warn("skipped wireless hotplug as probably "
629 "inappropriate for this model\n");
634 dev = pci_get_slot(bus, 0);
636 /* Device already present */
640 dev = pci_scan_single_device(bus, 0);
642 pci_bus_assign_resources(bus);
643 if (pci_bus_add_device(dev))
644 pr_err("Unable to hotplug wifi\n");
647 dev = pci_get_slot(bus, 0);
649 pci_stop_and_remove_bus_device(dev);
658 mutex_unlock(&eeepc->hotplug_lock);
661 static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
663 acpi_status status = AE_OK;
666 status = acpi_get_handle(NULL, node, &handle);
668 if (ACPI_SUCCESS(status))
669 eeepc_rfkill_hotplug(eeepc, handle);
672 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
674 struct eeepc_laptop *eeepc = data;
676 if (event != ACPI_NOTIFY_BUS_CHECK)
679 eeepc_rfkill_hotplug(eeepc, handle);
682 static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
688 status = acpi_get_handle(NULL, node, &handle);
690 if (ACPI_SUCCESS(status)) {
691 status = acpi_install_notify_handler(handle,
695 if (ACPI_FAILURE(status))
696 pr_warn("Failed to register notify on %s\n", node);
699 * Refresh pci hotplug in case the rfkill state was
700 * changed during setup.
702 eeepc_rfkill_hotplug(eeepc, handle);
709 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
712 acpi_status status = AE_OK;
715 status = acpi_get_handle(NULL, node, &handle);
717 if (ACPI_SUCCESS(status)) {
718 status = acpi_remove_notify_handler(handle,
720 eeepc_rfkill_notify);
721 if (ACPI_FAILURE(status))
722 pr_err("Error removing rfkill notify handler %s\n",
725 * Refresh pci hotplug in case the rfkill
726 * state was changed after
727 * eeepc_unregister_rfkill_notifier()
729 eeepc_rfkill_hotplug(eeepc, handle);
733 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
736 struct eeepc_laptop *eeepc = hotplug_slot->private;
737 int val = get_acpi(eeepc, CM_ASL_WLAN);
739 if (val == 1 || val == 0)
747 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
749 kfree(hotplug_slot->info);
753 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
754 .owner = THIS_MODULE,
755 .get_adapter_status = eeepc_get_adapter_status,
756 .get_power_status = eeepc_get_adapter_status,
759 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
762 struct pci_bus *bus = pci_find_bus(0, 1);
765 pr_err("Unable to find wifi PCI bus\n");
769 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
770 if (!eeepc->hotplug_slot)
773 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
775 if (!eeepc->hotplug_slot->info)
778 eeepc->hotplug_slot->private = eeepc;
779 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
780 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
781 eeepc_get_adapter_status(eeepc->hotplug_slot,
782 &eeepc->hotplug_slot->info->adapter_status);
784 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
786 pr_err("Unable to register hotplug slot - %d\n", ret);
793 kfree(eeepc->hotplug_slot->info);
795 kfree(eeepc->hotplug_slot);
796 eeepc->hotplug_slot = NULL;
804 static int eeepc_rfkill_set(void *data, bool blocked)
806 acpi_handle handle = data;
808 return write_acpi_int(handle, NULL, !blocked);
811 static const struct rfkill_ops eeepc_rfkill_ops = {
812 .set_block = eeepc_rfkill_set,
815 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
816 struct rfkill **rfkill,
818 enum rfkill_type type, int cm)
823 result = acpi_setter_handle(eeepc, cm, &handle);
827 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
828 &eeepc_rfkill_ops, handle);
833 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
834 result = rfkill_register(*rfkill);
836 rfkill_destroy(*rfkill);
843 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
845 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
846 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
847 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
848 if (eeepc->wlan_rfkill) {
849 rfkill_unregister(eeepc->wlan_rfkill);
850 rfkill_destroy(eeepc->wlan_rfkill);
851 eeepc->wlan_rfkill = NULL;
854 if (eeepc->hotplug_slot)
855 pci_hp_deregister(eeepc->hotplug_slot);
857 if (eeepc->bluetooth_rfkill) {
858 rfkill_unregister(eeepc->bluetooth_rfkill);
859 rfkill_destroy(eeepc->bluetooth_rfkill);
860 eeepc->bluetooth_rfkill = NULL;
862 if (eeepc->wwan3g_rfkill) {
863 rfkill_unregister(eeepc->wwan3g_rfkill);
864 rfkill_destroy(eeepc->wwan3g_rfkill);
865 eeepc->wwan3g_rfkill = NULL;
867 if (eeepc->wimax_rfkill) {
868 rfkill_unregister(eeepc->wimax_rfkill);
869 rfkill_destroy(eeepc->wimax_rfkill);
870 eeepc->wimax_rfkill = NULL;
874 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
878 mutex_init(&eeepc->hotplug_lock);
880 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
881 "eeepc-wlan", RFKILL_TYPE_WLAN,
884 if (result && result != -ENODEV)
887 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
888 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
891 if (result && result != -ENODEV)
894 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
895 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
898 if (result && result != -ENODEV)
901 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
902 "eeepc-wimax", RFKILL_TYPE_WIMAX,
905 if (result && result != -ENODEV)
908 if (eeepc->hotplug_disabled)
911 result = eeepc_setup_pci_hotplug(eeepc);
913 * If we get -EBUSY then something else is handling the PCI hotplug -
914 * don't fail in this case
916 if (result == -EBUSY)
919 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
920 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
921 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
924 if (result && result != -ENODEV)
925 eeepc_rfkill_exit(eeepc);
930 * Platform driver - hibernate/resume callbacks
932 static int eeepc_hotk_thaw(struct device *device)
934 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
936 if (eeepc->wlan_rfkill) {
940 * Work around bios bug - acpi _PTS turns off the wireless led
941 * during suspend. Normally it restores it on resume, but
942 * we should kick it ourselves in case hibernation is aborted.
944 wlan = get_acpi(eeepc, CM_ASL_WLAN);
945 set_acpi(eeepc, CM_ASL_WLAN, wlan);
951 static int eeepc_hotk_restore(struct device *device)
953 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
955 /* Refresh both wlan rfkill state and pci hotplug */
956 if (eeepc->wlan_rfkill) {
957 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P5");
958 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P6");
959 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P7");
962 if (eeepc->bluetooth_rfkill)
963 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
964 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
965 if (eeepc->wwan3g_rfkill)
966 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
967 get_acpi(eeepc, CM_ASL_3G) != 1);
968 if (eeepc->wimax_rfkill)
969 rfkill_set_sw_state(eeepc->wimax_rfkill,
970 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
975 static const struct dev_pm_ops eeepc_pm_ops = {
976 .thaw = eeepc_hotk_thaw,
977 .restore = eeepc_hotk_restore,
980 static struct platform_driver platform_driver = {
982 .name = EEEPC_LAPTOP_FILE,
983 .owner = THIS_MODULE,
992 #define EEEPC_EC_SC00 0x61
993 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
994 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
995 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
997 #define EEEPC_EC_SFB0 0xD0
998 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
1000 static int eeepc_get_fan_pwm(void)
1004 ec_read(EEEPC_EC_FAN_PWM, &value);
1005 return value * 255 / 100;
1008 static void eeepc_set_fan_pwm(int value)
1010 value = clamp_val(value, 0, 255);
1011 value = value * 100 / 255;
1012 ec_write(EEEPC_EC_FAN_PWM, value);
1015 static int eeepc_get_fan_rpm(void)
1020 ec_read(EEEPC_EC_FAN_HRPM, &high);
1021 ec_read(EEEPC_EC_FAN_LRPM, &low);
1022 return high << 8 | low;
1025 static int eeepc_get_fan_ctrl(void)
1029 ec_read(EEEPC_EC_FAN_CTRL, &value);
1031 return 1; /* manual */
1033 return 2; /* automatic */
1036 static void eeepc_set_fan_ctrl(int manual)
1040 ec_read(EEEPC_EC_FAN_CTRL, &value);
1045 ec_write(EEEPC_EC_FAN_CTRL, value);
1048 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1052 rv = parse_arg(buf, count, &value);
1058 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1060 return sprintf(buf, "%d\n", get());
1063 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1064 static ssize_t show_##_name(struct device *dev, \
1065 struct device_attribute *attr, \
1068 return show_sys_hwmon(_set, buf); \
1070 static ssize_t store_##_name(struct device *dev, \
1071 struct device_attribute *attr, \
1072 const char *buf, size_t count) \
1074 return store_sys_hwmon(_get, buf, count); \
1076 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1078 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1079 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1080 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1081 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1082 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1085 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1087 return sprintf(buf, "eeepc\n");
1089 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1091 static struct attribute *hwmon_attributes[] = {
1092 &sensor_dev_attr_pwm1.dev_attr.attr,
1093 &sensor_dev_attr_fan1_input.dev_attr.attr,
1094 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1095 &sensor_dev_attr_name.dev_attr.attr,
1099 static struct attribute_group hwmon_attribute_group = {
1100 .attrs = hwmon_attributes
1103 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1105 struct device *hwmon;
1107 hwmon = eeepc->hwmon_device;
1110 sysfs_remove_group(&hwmon->kobj,
1111 &hwmon_attribute_group);
1112 hwmon_device_unregister(hwmon);
1113 eeepc->hwmon_device = NULL;
1116 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1118 struct device *hwmon;
1121 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1122 if (IS_ERR(hwmon)) {
1123 pr_err("Could not register eeepc hwmon device\n");
1124 eeepc->hwmon_device = NULL;
1125 return PTR_ERR(hwmon);
1127 eeepc->hwmon_device = hwmon;
1128 result = sysfs_create_group(&hwmon->kobj,
1129 &hwmon_attribute_group);
1131 eeepc_hwmon_exit(eeepc);
1138 static int read_brightness(struct backlight_device *bd)
1140 struct eeepc_laptop *eeepc = bl_get_data(bd);
1142 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1145 static int set_brightness(struct backlight_device *bd, int value)
1147 struct eeepc_laptop *eeepc = bl_get_data(bd);
1149 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1152 static int update_bl_status(struct backlight_device *bd)
1154 return set_brightness(bd, bd->props.brightness);
1157 static const struct backlight_ops eeepcbl_ops = {
1158 .get_brightness = read_brightness,
1159 .update_status = update_bl_status,
1162 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1164 struct backlight_device *bd = eeepc->backlight_device;
1165 int old = bd->props.brightness;
1167 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1172 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1174 struct backlight_properties props;
1175 struct backlight_device *bd;
1177 memset(&props, 0, sizeof(struct backlight_properties));
1178 props.type = BACKLIGHT_PLATFORM;
1179 props.max_brightness = 15;
1180 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1181 &eeepc->platform_device->dev, eeepc,
1182 &eeepcbl_ops, &props);
1184 pr_err("Could not register eeepc backlight device\n");
1185 eeepc->backlight_device = NULL;
1188 eeepc->backlight_device = bd;
1189 bd->props.brightness = read_brightness(bd);
1190 bd->props.power = FB_BLANK_UNBLANK;
1191 backlight_update_status(bd);
1195 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1197 if (eeepc->backlight_device)
1198 backlight_device_unregister(eeepc->backlight_device);
1199 eeepc->backlight_device = NULL;
1204 * Input device (i.e. hotkeys)
1206 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1208 struct input_dev *input;
1211 input = input_allocate_device();
1213 pr_info("Unable to allocate input device\n");
1217 input->name = "Asus EeePC extra buttons";
1218 input->phys = EEEPC_LAPTOP_FILE "/input0";
1219 input->id.bustype = BUS_HOST;
1220 input->dev.parent = &eeepc->platform_device->dev;
1222 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1224 pr_err("Unable to setup input device keymap\n");
1228 error = input_register_device(input);
1230 pr_err("Unable to register input device\n");
1231 goto err_free_keymap;
1234 eeepc->inputdev = input;
1238 sparse_keymap_free(input);
1240 input_free_device(input);
1244 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1246 if (eeepc->inputdev) {
1247 sparse_keymap_free(eeepc->inputdev);
1248 input_unregister_device(eeepc->inputdev);
1250 eeepc->inputdev = NULL;
1256 static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
1258 if (!eeepc->inputdev)
1260 if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
1261 pr_info("Unknown key %x pressed\n", event);
1264 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1266 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1269 if (event > ACPI_MAX_SYS_NOTIFY)
1271 count = eeepc->event_count[event % 128]++;
1272 acpi_bus_generate_proc_event(device, event, count);
1273 acpi_bus_generate_netlink_event(device->pnp.device_class,
1274 dev_name(&device->dev), event,
1277 /* Brightness events are special */
1278 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1280 /* Ignore them completely if the acpi video driver is used */
1281 if (eeepc->backlight_device != NULL) {
1282 int old_brightness, new_brightness;
1284 /* Update the backlight device. */
1285 old_brightness = eeepc_backlight_notify(eeepc);
1287 /* Convert event to keypress (obsolescent hack) */
1288 new_brightness = event - NOTIFY_BRN_MIN;
1290 if (new_brightness < old_brightness) {
1291 event = NOTIFY_BRN_MIN; /* brightness down */
1292 } else if (new_brightness > old_brightness) {
1293 event = NOTIFY_BRN_MAX; /* brightness up */
1296 * no change in brightness - already at min/max,
1297 * event will be desired value (or else ignored)
1300 eeepc_input_notify(eeepc, event);
1303 /* Everything else is a bona-fide keypress event */
1304 eeepc_input_notify(eeepc, event);
1308 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1312 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1317 * Blacklist for setting cpufv (cpu speed).
1319 * EeePC 4G ("701") implements CFVS, but it is not supported
1320 * by the pre-installed OS, and the original option to change it
1321 * in the BIOS setup screen was removed in later versions.
1323 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1324 * this applies to all "701" models (4G/4G Surf/2G Surf).
1326 * So Asus made a deliberate decision not to support it on this model.
1327 * We have several reports that using it can cause the system to hang
1329 * The hang has also been reported on a "702" (Model name "8G"?).
1331 * We avoid dmi_check_system() / dmi_match(), because they use
1332 * substring matching. We don't want to affect the "701SD"
1333 * and "701SDX" models, because they do support S.H.E.
1335 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1336 eeepc->cpufv_disabled = true;
1337 pr_info("model %s does not officially support setting cpu "
1339 pr_info("cpufv disabled to avoid instability\n");
1343 * Blacklist for wlan hotplug
1345 * Eeepc 1005HA doesn't work like others models and don't need the
1346 * hotplug code. In fact, current hotplug code seems to unplug another
1349 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1350 strcmp(model, "1005PE") == 0) {
1351 eeepc->hotplug_disabled = true;
1352 pr_info("wlan hotplug disabled\n");
1356 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1360 /* Some BIOSes do not report cm although it is available.
1361 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1362 if (!(eeepc->cm_supported & (1 << cm))
1363 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1364 pr_info("%s (%x) not reported by BIOS,"
1365 " enabling anyway\n", name, 1 << cm);
1366 eeepc->cm_supported |= 1 << cm;
1370 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1372 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1373 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1374 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1375 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1378 static int eeepc_acpi_init(struct eeepc_laptop *eeepc)
1380 unsigned int init_flags;
1383 result = acpi_bus_get_status(eeepc->device);
1386 if (!eeepc->device->status.present) {
1387 pr_err("Hotkey device not present, aborting\n");
1391 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1392 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1394 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1395 pr_err("Hotkey initialization failed\n");
1399 /* get control methods supported */
1400 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1401 pr_err("Get control methods supported failed\n");
1405 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1410 static void eeepc_enable_camera(struct eeepc_laptop *eeepc)
1413 * If the following call to set_acpi() fails, it's because there's no
1414 * camera so we can ignore the error.
1416 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1417 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1420 static bool eeepc_device_present;
1422 static int eeepc_acpi_add(struct acpi_device *device)
1424 struct eeepc_laptop *eeepc;
1427 pr_notice(EEEPC_LAPTOP_NAME "\n");
1428 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1431 eeepc->handle = device->handle;
1432 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1433 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1434 device->driver_data = eeepc;
1435 eeepc->device = device;
1437 eeepc->hotplug_disabled = hotplug_disabled;
1439 eeepc_dmi_check(eeepc);
1441 result = eeepc_acpi_init(eeepc);
1444 eeepc_enable_camera(eeepc);
1447 * Register the platform device first. It is used as a parent for the
1448 * sub-devices below.
1450 * Note that if there are multiple instances of this ACPI device it
1451 * will bail out, because the platform device is registered with a
1452 * fixed name. Of course it doesn't make sense to have more than one,
1453 * and machine-specific scripts find the fixed name convenient. But
1454 * It's also good for us to exclude multiple instances because both
1455 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1456 * (the EC and the wlan PCI slot respectively).
1458 result = eeepc_platform_init(eeepc);
1462 if (!acpi_video_backlight_support()) {
1463 result = eeepc_backlight_init(eeepc);
1465 goto fail_backlight;
1467 pr_info("Backlight controlled by ACPI video driver\n");
1469 result = eeepc_input_init(eeepc);
1473 result = eeepc_hwmon_init(eeepc);
1477 result = eeepc_led_init(eeepc);
1481 result = eeepc_rfkill_init(eeepc);
1485 eeepc_device_present = true;
1489 eeepc_led_exit(eeepc);
1491 eeepc_hwmon_exit(eeepc);
1493 eeepc_input_exit(eeepc);
1495 eeepc_backlight_exit(eeepc);
1497 eeepc_platform_exit(eeepc);
1504 static int eeepc_acpi_remove(struct acpi_device *device)
1506 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1508 eeepc_backlight_exit(eeepc);
1509 eeepc_rfkill_exit(eeepc);
1510 eeepc_input_exit(eeepc);
1511 eeepc_hwmon_exit(eeepc);
1512 eeepc_led_exit(eeepc);
1513 eeepc_platform_exit(eeepc);
1520 static const struct acpi_device_id eeepc_device_ids[] = {
1521 {EEEPC_ACPI_HID, 0},
1524 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1526 static struct acpi_driver eeepc_acpi_driver = {
1527 .name = EEEPC_LAPTOP_NAME,
1528 .class = EEEPC_ACPI_CLASS,
1529 .owner = THIS_MODULE,
1530 .ids = eeepc_device_ids,
1531 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1533 .add = eeepc_acpi_add,
1534 .remove = eeepc_acpi_remove,
1535 .notify = eeepc_acpi_notify,
1540 static int __init eeepc_laptop_init(void)
1544 result = platform_driver_register(&platform_driver);
1548 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1550 goto fail_acpi_driver;
1552 if (!eeepc_device_present) {
1554 goto fail_no_device;
1560 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1562 platform_driver_unregister(&platform_driver);
1566 static void __exit eeepc_laptop_exit(void)
1568 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1569 platform_driver_unregister(&platform_driver);
1572 module_init(eeepc_laptop_init);
1573 module_exit(eeepc_laptop_exit);