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_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 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 (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_warning("Unable to find PCI bus?\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_warning("BIOS says wireless lan is %s, "
625 "but the pci device is %s\n",
626 blocked ? "blocked" : "unblocked",
627 absent ? "absent" : "present");
628 pr_warning("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_remove_bus_device(dev);
656 mutex_unlock(&eeepc->hotplug_lock);
659 static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
661 acpi_status status = AE_OK;
664 status = acpi_get_handle(NULL, node, &handle);
666 if (ACPI_SUCCESS(status))
667 eeepc_rfkill_hotplug(eeepc, handle);
670 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
672 struct eeepc_laptop *eeepc = data;
674 if (event != ACPI_NOTIFY_BUS_CHECK)
677 eeepc_rfkill_hotplug(eeepc, handle);
680 static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
686 status = acpi_get_handle(NULL, node, &handle);
688 if (ACPI_SUCCESS(status)) {
689 status = acpi_install_notify_handler(handle,
693 if (ACPI_FAILURE(status))
694 pr_warning("Failed to register notify on %s\n", node);
696 * Refresh pci hotplug in case the rfkill state was
697 * changed during setup.
699 eeepc_rfkill_hotplug(eeepc, handle);
706 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
709 acpi_status status = AE_OK;
712 status = acpi_get_handle(NULL, node, &handle);
714 if (ACPI_SUCCESS(status)) {
715 status = acpi_remove_notify_handler(handle,
717 eeepc_rfkill_notify);
718 if (ACPI_FAILURE(status))
719 pr_err("Error removing rfkill notify handler %s\n",
722 * Refresh pci hotplug in case the rfkill
723 * state was changed after
724 * eeepc_unregister_rfkill_notifier()
726 eeepc_rfkill_hotplug(eeepc, handle);
730 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
733 struct eeepc_laptop *eeepc = hotplug_slot->private;
734 int val = get_acpi(eeepc, CM_ASL_WLAN);
736 if (val == 1 || val == 0)
744 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
746 kfree(hotplug_slot->info);
750 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
751 .owner = THIS_MODULE,
752 .get_adapter_status = eeepc_get_adapter_status,
753 .get_power_status = eeepc_get_adapter_status,
756 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
759 struct pci_bus *bus = pci_find_bus(0, 1);
762 pr_err("Unable to find wifi PCI bus\n");
766 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
767 if (!eeepc->hotplug_slot)
770 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
772 if (!eeepc->hotplug_slot->info)
775 eeepc->hotplug_slot->private = eeepc;
776 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
777 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
778 eeepc_get_adapter_status(eeepc->hotplug_slot,
779 &eeepc->hotplug_slot->info->adapter_status);
781 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
783 pr_err("Unable to register hotplug slot - %d\n", ret);
790 kfree(eeepc->hotplug_slot->info);
792 kfree(eeepc->hotplug_slot);
793 eeepc->hotplug_slot = NULL;
801 static int eeepc_rfkill_set(void *data, bool blocked)
803 acpi_handle handle = data;
805 return write_acpi_int(handle, NULL, !blocked);
808 static const struct rfkill_ops eeepc_rfkill_ops = {
809 .set_block = eeepc_rfkill_set,
812 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
813 struct rfkill **rfkill,
815 enum rfkill_type type, int cm)
820 result = acpi_setter_handle(eeepc, cm, &handle);
824 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
825 &eeepc_rfkill_ops, handle);
830 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
831 result = rfkill_register(*rfkill);
833 rfkill_destroy(*rfkill);
840 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
842 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
843 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
844 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
845 if (eeepc->wlan_rfkill) {
846 rfkill_unregister(eeepc->wlan_rfkill);
847 rfkill_destroy(eeepc->wlan_rfkill);
848 eeepc->wlan_rfkill = NULL;
851 if (eeepc->hotplug_slot)
852 pci_hp_deregister(eeepc->hotplug_slot);
854 if (eeepc->bluetooth_rfkill) {
855 rfkill_unregister(eeepc->bluetooth_rfkill);
856 rfkill_destroy(eeepc->bluetooth_rfkill);
857 eeepc->bluetooth_rfkill = NULL;
859 if (eeepc->wwan3g_rfkill) {
860 rfkill_unregister(eeepc->wwan3g_rfkill);
861 rfkill_destroy(eeepc->wwan3g_rfkill);
862 eeepc->wwan3g_rfkill = NULL;
864 if (eeepc->wimax_rfkill) {
865 rfkill_unregister(eeepc->wimax_rfkill);
866 rfkill_destroy(eeepc->wimax_rfkill);
867 eeepc->wimax_rfkill = NULL;
871 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
875 mutex_init(&eeepc->hotplug_lock);
877 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
878 "eeepc-wlan", RFKILL_TYPE_WLAN,
881 if (result && result != -ENODEV)
884 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
885 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
888 if (result && result != -ENODEV)
891 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
892 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
895 if (result && result != -ENODEV)
898 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
899 "eeepc-wimax", RFKILL_TYPE_WIMAX,
902 if (result && result != -ENODEV)
905 if (eeepc->hotplug_disabled)
908 result = eeepc_setup_pci_hotplug(eeepc);
910 * If we get -EBUSY then something else is handling the PCI hotplug -
911 * don't fail in this case
913 if (result == -EBUSY)
916 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
917 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
918 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
921 if (result && result != -ENODEV)
922 eeepc_rfkill_exit(eeepc);
927 * Platform driver - hibernate/resume callbacks
929 static int eeepc_hotk_thaw(struct device *device)
931 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
933 if (eeepc->wlan_rfkill) {
937 * Work around bios bug - acpi _PTS turns off the wireless led
938 * during suspend. Normally it restores it on resume, but
939 * we should kick it ourselves in case hibernation is aborted.
941 wlan = get_acpi(eeepc, CM_ASL_WLAN);
942 set_acpi(eeepc, CM_ASL_WLAN, wlan);
948 static int eeepc_hotk_restore(struct device *device)
950 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
952 /* Refresh both wlan rfkill state and pci hotplug */
953 if (eeepc->wlan_rfkill) {
954 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P5");
955 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P6");
956 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P7");
959 if (eeepc->bluetooth_rfkill)
960 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
961 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
962 if (eeepc->wwan3g_rfkill)
963 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
964 get_acpi(eeepc, CM_ASL_3G) != 1);
965 if (eeepc->wimax_rfkill)
966 rfkill_set_sw_state(eeepc->wimax_rfkill,
967 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
972 static const struct dev_pm_ops eeepc_pm_ops = {
973 .thaw = eeepc_hotk_thaw,
974 .restore = eeepc_hotk_restore,
977 static struct platform_driver platform_driver = {
979 .name = EEEPC_LAPTOP_FILE,
980 .owner = THIS_MODULE,
989 #define EEEPC_EC_SC00 0x61
990 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
991 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
992 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
994 #define EEEPC_EC_SFB0 0xD0
995 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
997 static int eeepc_get_fan_pwm(void)
1001 ec_read(EEEPC_EC_FAN_PWM, &value);
1002 return value * 255 / 100;
1005 static void eeepc_set_fan_pwm(int value)
1007 value = SENSORS_LIMIT(value, 0, 255);
1008 value = value * 100 / 255;
1009 ec_write(EEEPC_EC_FAN_PWM, value);
1012 static int eeepc_get_fan_rpm(void)
1017 ec_read(EEEPC_EC_FAN_HRPM, &high);
1018 ec_read(EEEPC_EC_FAN_LRPM, &low);
1019 return high << 8 | low;
1022 static int eeepc_get_fan_ctrl(void)
1026 ec_read(EEEPC_EC_FAN_CTRL, &value);
1028 return 1; /* manual */
1030 return 2; /* automatic */
1033 static void eeepc_set_fan_ctrl(int manual)
1037 ec_read(EEEPC_EC_FAN_CTRL, &value);
1042 ec_write(EEEPC_EC_FAN_CTRL, value);
1045 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1049 rv = parse_arg(buf, count, &value);
1055 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1057 return sprintf(buf, "%d\n", get());
1060 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1061 static ssize_t show_##_name(struct device *dev, \
1062 struct device_attribute *attr, \
1065 return show_sys_hwmon(_set, buf); \
1067 static ssize_t store_##_name(struct device *dev, \
1068 struct device_attribute *attr, \
1069 const char *buf, size_t count) \
1071 return store_sys_hwmon(_get, buf, count); \
1073 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1075 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1076 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1077 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1078 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1079 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1082 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1084 return sprintf(buf, "eeepc\n");
1086 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1088 static struct attribute *hwmon_attributes[] = {
1089 &sensor_dev_attr_pwm1.dev_attr.attr,
1090 &sensor_dev_attr_fan1_input.dev_attr.attr,
1091 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1092 &sensor_dev_attr_name.dev_attr.attr,
1096 static struct attribute_group hwmon_attribute_group = {
1097 .attrs = hwmon_attributes
1100 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1102 struct device *hwmon;
1104 hwmon = eeepc->hwmon_device;
1107 sysfs_remove_group(&hwmon->kobj,
1108 &hwmon_attribute_group);
1109 hwmon_device_unregister(hwmon);
1110 eeepc->hwmon_device = NULL;
1113 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1115 struct device *hwmon;
1118 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1119 if (IS_ERR(hwmon)) {
1120 pr_err("Could not register eeepc hwmon device\n");
1121 eeepc->hwmon_device = NULL;
1122 return PTR_ERR(hwmon);
1124 eeepc->hwmon_device = hwmon;
1125 result = sysfs_create_group(&hwmon->kobj,
1126 &hwmon_attribute_group);
1128 eeepc_hwmon_exit(eeepc);
1135 static int read_brightness(struct backlight_device *bd)
1137 struct eeepc_laptop *eeepc = bl_get_data(bd);
1139 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1142 static int set_brightness(struct backlight_device *bd, int value)
1144 struct eeepc_laptop *eeepc = bl_get_data(bd);
1146 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1149 static int update_bl_status(struct backlight_device *bd)
1151 return set_brightness(bd, bd->props.brightness);
1154 static const struct backlight_ops eeepcbl_ops = {
1155 .get_brightness = read_brightness,
1156 .update_status = update_bl_status,
1159 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1161 struct backlight_device *bd = eeepc->backlight_device;
1162 int old = bd->props.brightness;
1164 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1169 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1171 struct backlight_properties props;
1172 struct backlight_device *bd;
1174 memset(&props, 0, sizeof(struct backlight_properties));
1175 props.type = BACKLIGHT_PLATFORM;
1176 props.max_brightness = 15;
1177 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1178 &eeepc->platform_device->dev, eeepc,
1179 &eeepcbl_ops, &props);
1181 pr_err("Could not register eeepc backlight device\n");
1182 eeepc->backlight_device = NULL;
1185 eeepc->backlight_device = bd;
1186 bd->props.brightness = read_brightness(bd);
1187 bd->props.power = FB_BLANK_UNBLANK;
1188 backlight_update_status(bd);
1192 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1194 if (eeepc->backlight_device)
1195 backlight_device_unregister(eeepc->backlight_device);
1196 eeepc->backlight_device = NULL;
1201 * Input device (i.e. hotkeys)
1203 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1205 struct input_dev *input;
1208 input = input_allocate_device();
1210 pr_info("Unable to allocate input device\n");
1214 input->name = "Asus EeePC extra buttons";
1215 input->phys = EEEPC_LAPTOP_FILE "/input0";
1216 input->id.bustype = BUS_HOST;
1217 input->dev.parent = &eeepc->platform_device->dev;
1219 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1221 pr_err("Unable to setup input device keymap\n");
1225 error = input_register_device(input);
1227 pr_err("Unable to register input device\n");
1228 goto err_free_keymap;
1231 eeepc->inputdev = input;
1235 sparse_keymap_free(input);
1237 input_free_device(input);
1241 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1243 if (eeepc->inputdev) {
1244 sparse_keymap_free(eeepc->inputdev);
1245 input_unregister_device(eeepc->inputdev);
1247 eeepc->inputdev = NULL;
1253 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1255 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1258 if (event > ACPI_MAX_SYS_NOTIFY)
1260 count = eeepc->event_count[event % 128]++;
1261 acpi_bus_generate_proc_event(device, event, count);
1262 acpi_bus_generate_netlink_event(device->pnp.device_class,
1263 dev_name(&device->dev), event,
1266 /* Brightness events are special */
1267 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1269 /* Ignore them completely if the acpi video driver is used */
1270 if (eeepc->backlight_device != NULL) {
1271 int old_brightness, new_brightness;
1273 /* Update the backlight device. */
1274 old_brightness = eeepc_backlight_notify(eeepc);
1276 /* Convert event to keypress (obsolescent hack) */
1277 new_brightness = event - NOTIFY_BRN_MIN;
1279 if (new_brightness < old_brightness) {
1280 event = NOTIFY_BRN_MIN; /* brightness down */
1281 } else if (new_brightness > old_brightness) {
1282 event = NOTIFY_BRN_MAX; /* brightness up */
1285 * no change in brightness - already at min/max,
1286 * event will be desired value (or else ignored)
1289 sparse_keymap_report_event(eeepc->inputdev, event,
1293 /* Everything else is a bona-fide keypress event */
1294 sparse_keymap_report_event(eeepc->inputdev, event, 1, true);
1298 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1302 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1307 * Blacklist for setting cpufv (cpu speed).
1309 * EeePC 4G ("701") implements CFVS, but it is not supported
1310 * by the pre-installed OS, and the original option to change it
1311 * in the BIOS setup screen was removed in later versions.
1313 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1314 * this applies to all "701" models (4G/4G Surf/2G Surf).
1316 * So Asus made a deliberate decision not to support it on this model.
1317 * We have several reports that using it can cause the system to hang
1319 * The hang has also been reported on a "702" (Model name "8G"?).
1321 * We avoid dmi_check_system() / dmi_match(), because they use
1322 * substring matching. We don't want to affect the "701SD"
1323 * and "701SDX" models, because they do support S.H.E.
1325 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1326 eeepc->cpufv_disabled = true;
1327 pr_info("model %s does not officially support setting cpu "
1329 pr_info("cpufv disabled to avoid instability\n");
1333 * Blacklist for wlan hotplug
1335 * Eeepc 1005HA doesn't work like others models and don't need the
1336 * hotplug code. In fact, current hotplug code seems to unplug another
1339 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1340 strcmp(model, "1005PE") == 0) {
1341 eeepc->hotplug_disabled = true;
1342 pr_info("wlan hotplug disabled\n");
1346 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1350 /* Some BIOSes do not report cm although it is available.
1351 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1352 if (!(eeepc->cm_supported & (1 << cm))
1353 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1354 pr_info("%s (%x) not reported by BIOS,"
1355 " enabling anyway\n", name, 1 << cm);
1356 eeepc->cm_supported |= 1 << cm;
1360 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1362 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1363 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1364 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1365 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1368 static int __devinit eeepc_acpi_init(struct eeepc_laptop *eeepc)
1370 unsigned int init_flags;
1373 result = acpi_bus_get_status(eeepc->device);
1376 if (!eeepc->device->status.present) {
1377 pr_err("Hotkey device not present, aborting\n");
1381 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1382 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1384 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1385 pr_err("Hotkey initialization failed\n");
1389 /* get control methods supported */
1390 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1391 pr_err("Get control methods supported failed\n");
1395 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1400 static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc)
1403 * If the following call to set_acpi() fails, it's because there's no
1404 * camera so we can ignore the error.
1406 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1407 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1410 static bool eeepc_device_present;
1412 static int __devinit eeepc_acpi_add(struct acpi_device *device)
1414 struct eeepc_laptop *eeepc;
1417 pr_notice(EEEPC_LAPTOP_NAME "\n");
1418 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1421 eeepc->handle = device->handle;
1422 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1423 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1424 device->driver_data = eeepc;
1425 eeepc->device = device;
1427 eeepc->hotplug_disabled = hotplug_disabled;
1429 eeepc_dmi_check(eeepc);
1431 result = eeepc_acpi_init(eeepc);
1434 eeepc_enable_camera(eeepc);
1437 * Register the platform device first. It is used as a parent for the
1438 * sub-devices below.
1440 * Note that if there are multiple instances of this ACPI device it
1441 * will bail out, because the platform device is registered with a
1442 * fixed name. Of course it doesn't make sense to have more than one,
1443 * and machine-specific scripts find the fixed name convenient. But
1444 * It's also good for us to exclude multiple instances because both
1445 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1446 * (the EC and the wlan PCI slot respectively).
1448 result = eeepc_platform_init(eeepc);
1452 if (!acpi_video_backlight_support()) {
1453 result = eeepc_backlight_init(eeepc);
1455 goto fail_backlight;
1457 pr_info("Backlight controlled by ACPI video driver\n");
1459 result = eeepc_input_init(eeepc);
1463 result = eeepc_hwmon_init(eeepc);
1467 result = eeepc_led_init(eeepc);
1471 result = eeepc_rfkill_init(eeepc);
1475 eeepc_device_present = true;
1479 eeepc_led_exit(eeepc);
1481 eeepc_hwmon_exit(eeepc);
1483 eeepc_input_exit(eeepc);
1485 eeepc_backlight_exit(eeepc);
1487 eeepc_platform_exit(eeepc);
1494 static int eeepc_acpi_remove(struct acpi_device *device, int type)
1496 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1498 eeepc_backlight_exit(eeepc);
1499 eeepc_rfkill_exit(eeepc);
1500 eeepc_input_exit(eeepc);
1501 eeepc_hwmon_exit(eeepc);
1502 eeepc_led_exit(eeepc);
1503 eeepc_platform_exit(eeepc);
1510 static const struct acpi_device_id eeepc_device_ids[] = {
1511 {EEEPC_ACPI_HID, 0},
1514 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1516 static struct acpi_driver eeepc_acpi_driver = {
1517 .name = EEEPC_LAPTOP_NAME,
1518 .class = EEEPC_ACPI_CLASS,
1519 .owner = THIS_MODULE,
1520 .ids = eeepc_device_ids,
1521 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1523 .add = eeepc_acpi_add,
1524 .remove = eeepc_acpi_remove,
1525 .notify = eeepc_acpi_notify,
1530 static int __init eeepc_laptop_init(void)
1534 result = platform_driver_register(&platform_driver);
1538 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1540 goto fail_acpi_driver;
1542 if (!eeepc_device_present) {
1544 goto fail_no_device;
1550 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1552 platform_driver_unregister(&platform_driver);
1556 static void __exit eeepc_laptop_exit(void)
1558 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1559 platform_driver_unregister(&platform_driver);
1562 module_init(eeepc_laptop_init);
1563 module_exit(eeepc_laptop_exit);