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);
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_warn("Failed to register notify on %s\n", node);
697 * Refresh pci hotplug in case the rfkill state was
698 * changed during setup.
700 eeepc_rfkill_hotplug(eeepc, handle);
707 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
710 acpi_status status = AE_OK;
713 status = acpi_get_handle(NULL, node, &handle);
715 if (ACPI_SUCCESS(status)) {
716 status = acpi_remove_notify_handler(handle,
718 eeepc_rfkill_notify);
719 if (ACPI_FAILURE(status))
720 pr_err("Error removing rfkill notify handler %s\n",
723 * Refresh pci hotplug in case the rfkill
724 * state was changed after
725 * eeepc_unregister_rfkill_notifier()
727 eeepc_rfkill_hotplug(eeepc, handle);
731 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
734 struct eeepc_laptop *eeepc = hotplug_slot->private;
735 int val = get_acpi(eeepc, CM_ASL_WLAN);
737 if (val == 1 || val == 0)
745 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
747 kfree(hotplug_slot->info);
751 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
752 .owner = THIS_MODULE,
753 .get_adapter_status = eeepc_get_adapter_status,
754 .get_power_status = eeepc_get_adapter_status,
757 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
760 struct pci_bus *bus = pci_find_bus(0, 1);
763 pr_err("Unable to find wifi PCI bus\n");
767 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
768 if (!eeepc->hotplug_slot)
771 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
773 if (!eeepc->hotplug_slot->info)
776 eeepc->hotplug_slot->private = eeepc;
777 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
778 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
779 eeepc_get_adapter_status(eeepc->hotplug_slot,
780 &eeepc->hotplug_slot->info->adapter_status);
782 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
784 pr_err("Unable to register hotplug slot - %d\n", ret);
791 kfree(eeepc->hotplug_slot->info);
793 kfree(eeepc->hotplug_slot);
794 eeepc->hotplug_slot = NULL;
802 static int eeepc_rfkill_set(void *data, bool blocked)
804 acpi_handle handle = data;
806 return write_acpi_int(handle, NULL, !blocked);
809 static const struct rfkill_ops eeepc_rfkill_ops = {
810 .set_block = eeepc_rfkill_set,
813 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
814 struct rfkill **rfkill,
816 enum rfkill_type type, int cm)
821 result = acpi_setter_handle(eeepc, cm, &handle);
825 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
826 &eeepc_rfkill_ops, handle);
831 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
832 result = rfkill_register(*rfkill);
834 rfkill_destroy(*rfkill);
841 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
843 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
844 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
845 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
846 if (eeepc->wlan_rfkill) {
847 rfkill_unregister(eeepc->wlan_rfkill);
848 rfkill_destroy(eeepc->wlan_rfkill);
849 eeepc->wlan_rfkill = NULL;
852 if (eeepc->hotplug_slot)
853 pci_hp_deregister(eeepc->hotplug_slot);
855 if (eeepc->bluetooth_rfkill) {
856 rfkill_unregister(eeepc->bluetooth_rfkill);
857 rfkill_destroy(eeepc->bluetooth_rfkill);
858 eeepc->bluetooth_rfkill = NULL;
860 if (eeepc->wwan3g_rfkill) {
861 rfkill_unregister(eeepc->wwan3g_rfkill);
862 rfkill_destroy(eeepc->wwan3g_rfkill);
863 eeepc->wwan3g_rfkill = NULL;
865 if (eeepc->wimax_rfkill) {
866 rfkill_unregister(eeepc->wimax_rfkill);
867 rfkill_destroy(eeepc->wimax_rfkill);
868 eeepc->wimax_rfkill = NULL;
872 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
876 mutex_init(&eeepc->hotplug_lock);
878 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
879 "eeepc-wlan", RFKILL_TYPE_WLAN,
882 if (result && result != -ENODEV)
885 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
886 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
889 if (result && result != -ENODEV)
892 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
893 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
896 if (result && result != -ENODEV)
899 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
900 "eeepc-wimax", RFKILL_TYPE_WIMAX,
903 if (result && result != -ENODEV)
906 if (eeepc->hotplug_disabled)
909 result = eeepc_setup_pci_hotplug(eeepc);
911 * If we get -EBUSY then something else is handling the PCI hotplug -
912 * don't fail in this case
914 if (result == -EBUSY)
917 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
918 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
919 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
922 if (result && result != -ENODEV)
923 eeepc_rfkill_exit(eeepc);
928 * Platform driver - hibernate/resume callbacks
930 static int eeepc_hotk_thaw(struct device *device)
932 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
934 if (eeepc->wlan_rfkill) {
938 * Work around bios bug - acpi _PTS turns off the wireless led
939 * during suspend. Normally it restores it on resume, but
940 * we should kick it ourselves in case hibernation is aborted.
942 wlan = get_acpi(eeepc, CM_ASL_WLAN);
943 set_acpi(eeepc, CM_ASL_WLAN, wlan);
949 static int eeepc_hotk_restore(struct device *device)
951 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
953 /* Refresh both wlan rfkill state and pci hotplug */
954 if (eeepc->wlan_rfkill) {
955 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P5");
956 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P6");
957 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P7");
960 if (eeepc->bluetooth_rfkill)
961 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
962 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
963 if (eeepc->wwan3g_rfkill)
964 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
965 get_acpi(eeepc, CM_ASL_3G) != 1);
966 if (eeepc->wimax_rfkill)
967 rfkill_set_sw_state(eeepc->wimax_rfkill,
968 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
973 static const struct dev_pm_ops eeepc_pm_ops = {
974 .thaw = eeepc_hotk_thaw,
975 .restore = eeepc_hotk_restore,
978 static struct platform_driver platform_driver = {
980 .name = EEEPC_LAPTOP_FILE,
981 .owner = THIS_MODULE,
990 #define EEEPC_EC_SC00 0x61
991 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
992 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
993 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
995 #define EEEPC_EC_SFB0 0xD0
996 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
998 static int eeepc_get_fan_pwm(void)
1002 ec_read(EEEPC_EC_FAN_PWM, &value);
1003 return value * 255 / 100;
1006 static void eeepc_set_fan_pwm(int value)
1008 value = SENSORS_LIMIT(value, 0, 255);
1009 value = value * 100 / 255;
1010 ec_write(EEEPC_EC_FAN_PWM, value);
1013 static int eeepc_get_fan_rpm(void)
1018 ec_read(EEEPC_EC_FAN_HRPM, &high);
1019 ec_read(EEEPC_EC_FAN_LRPM, &low);
1020 return high << 8 | low;
1023 static int eeepc_get_fan_ctrl(void)
1027 ec_read(EEEPC_EC_FAN_CTRL, &value);
1029 return 1; /* manual */
1031 return 2; /* automatic */
1034 static void eeepc_set_fan_ctrl(int manual)
1038 ec_read(EEEPC_EC_FAN_CTRL, &value);
1043 ec_write(EEEPC_EC_FAN_CTRL, value);
1046 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1050 rv = parse_arg(buf, count, &value);
1056 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1058 return sprintf(buf, "%d\n", get());
1061 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1062 static ssize_t show_##_name(struct device *dev, \
1063 struct device_attribute *attr, \
1066 return show_sys_hwmon(_set, buf); \
1068 static ssize_t store_##_name(struct device *dev, \
1069 struct device_attribute *attr, \
1070 const char *buf, size_t count) \
1072 return store_sys_hwmon(_get, buf, count); \
1074 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1076 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1077 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1078 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1079 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1080 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1083 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1085 return sprintf(buf, "eeepc\n");
1087 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1089 static struct attribute *hwmon_attributes[] = {
1090 &sensor_dev_attr_pwm1.dev_attr.attr,
1091 &sensor_dev_attr_fan1_input.dev_attr.attr,
1092 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1093 &sensor_dev_attr_name.dev_attr.attr,
1097 static struct attribute_group hwmon_attribute_group = {
1098 .attrs = hwmon_attributes
1101 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1103 struct device *hwmon;
1105 hwmon = eeepc->hwmon_device;
1108 sysfs_remove_group(&hwmon->kobj,
1109 &hwmon_attribute_group);
1110 hwmon_device_unregister(hwmon);
1111 eeepc->hwmon_device = NULL;
1114 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1116 struct device *hwmon;
1119 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1120 if (IS_ERR(hwmon)) {
1121 pr_err("Could not register eeepc hwmon device\n");
1122 eeepc->hwmon_device = NULL;
1123 return PTR_ERR(hwmon);
1125 eeepc->hwmon_device = hwmon;
1126 result = sysfs_create_group(&hwmon->kobj,
1127 &hwmon_attribute_group);
1129 eeepc_hwmon_exit(eeepc);
1136 static int read_brightness(struct backlight_device *bd)
1138 struct eeepc_laptop *eeepc = bl_get_data(bd);
1140 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1143 static int set_brightness(struct backlight_device *bd, int value)
1145 struct eeepc_laptop *eeepc = bl_get_data(bd);
1147 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1150 static int update_bl_status(struct backlight_device *bd)
1152 return set_brightness(bd, bd->props.brightness);
1155 static const struct backlight_ops eeepcbl_ops = {
1156 .get_brightness = read_brightness,
1157 .update_status = update_bl_status,
1160 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1162 struct backlight_device *bd = eeepc->backlight_device;
1163 int old = bd->props.brightness;
1165 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1170 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1172 struct backlight_properties props;
1173 struct backlight_device *bd;
1175 memset(&props, 0, sizeof(struct backlight_properties));
1176 props.type = BACKLIGHT_PLATFORM;
1177 props.max_brightness = 15;
1178 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1179 &eeepc->platform_device->dev, eeepc,
1180 &eeepcbl_ops, &props);
1182 pr_err("Could not register eeepc backlight device\n");
1183 eeepc->backlight_device = NULL;
1186 eeepc->backlight_device = bd;
1187 bd->props.brightness = read_brightness(bd);
1188 bd->props.power = FB_BLANK_UNBLANK;
1189 backlight_update_status(bd);
1193 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1195 if (eeepc->backlight_device)
1196 backlight_device_unregister(eeepc->backlight_device);
1197 eeepc->backlight_device = NULL;
1202 * Input device (i.e. hotkeys)
1204 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1206 struct input_dev *input;
1209 input = input_allocate_device();
1211 pr_info("Unable to allocate input device\n");
1215 input->name = "Asus EeePC extra buttons";
1216 input->phys = EEEPC_LAPTOP_FILE "/input0";
1217 input->id.bustype = BUS_HOST;
1218 input->dev.parent = &eeepc->platform_device->dev;
1220 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1222 pr_err("Unable to setup input device keymap\n");
1226 error = input_register_device(input);
1228 pr_err("Unable to register input device\n");
1229 goto err_free_keymap;
1232 eeepc->inputdev = input;
1236 sparse_keymap_free(input);
1238 input_free_device(input);
1242 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1244 if (eeepc->inputdev) {
1245 sparse_keymap_free(eeepc->inputdev);
1246 input_unregister_device(eeepc->inputdev);
1248 eeepc->inputdev = NULL;
1254 static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
1256 if (!eeepc->inputdev)
1258 if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
1259 pr_info("Unknown key %x pressed\n", event);
1262 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1264 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1267 if (event > ACPI_MAX_SYS_NOTIFY)
1269 count = eeepc->event_count[event % 128]++;
1270 acpi_bus_generate_proc_event(device, event, count);
1271 acpi_bus_generate_netlink_event(device->pnp.device_class,
1272 dev_name(&device->dev), event,
1275 /* Brightness events are special */
1276 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1278 /* Ignore them completely if the acpi video driver is used */
1279 if (eeepc->backlight_device != NULL) {
1280 int old_brightness, new_brightness;
1282 /* Update the backlight device. */
1283 old_brightness = eeepc_backlight_notify(eeepc);
1285 /* Convert event to keypress (obsolescent hack) */
1286 new_brightness = event - NOTIFY_BRN_MIN;
1288 if (new_brightness < old_brightness) {
1289 event = NOTIFY_BRN_MIN; /* brightness down */
1290 } else if (new_brightness > old_brightness) {
1291 event = NOTIFY_BRN_MAX; /* brightness up */
1294 * no change in brightness - already at min/max,
1295 * event will be desired value (or else ignored)
1298 eeepc_input_notify(eeepc, event);
1301 /* Everything else is a bona-fide keypress event */
1302 eeepc_input_notify(eeepc, event);
1306 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1310 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1315 * Blacklist for setting cpufv (cpu speed).
1317 * EeePC 4G ("701") implements CFVS, but it is not supported
1318 * by the pre-installed OS, and the original option to change it
1319 * in the BIOS setup screen was removed in later versions.
1321 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1322 * this applies to all "701" models (4G/4G Surf/2G Surf).
1324 * So Asus made a deliberate decision not to support it on this model.
1325 * We have several reports that using it can cause the system to hang
1327 * The hang has also been reported on a "702" (Model name "8G"?).
1329 * We avoid dmi_check_system() / dmi_match(), because they use
1330 * substring matching. We don't want to affect the "701SD"
1331 * and "701SDX" models, because they do support S.H.E.
1333 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1334 eeepc->cpufv_disabled = true;
1335 pr_info("model %s does not officially support setting cpu "
1337 pr_info("cpufv disabled to avoid instability\n");
1341 * Blacklist for wlan hotplug
1343 * Eeepc 1005HA doesn't work like others models and don't need the
1344 * hotplug code. In fact, current hotplug code seems to unplug another
1347 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1348 strcmp(model, "1005PE") == 0) {
1349 eeepc->hotplug_disabled = true;
1350 pr_info("wlan hotplug disabled\n");
1354 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1358 /* Some BIOSes do not report cm although it is available.
1359 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1360 if (!(eeepc->cm_supported & (1 << cm))
1361 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1362 pr_info("%s (%x) not reported by BIOS,"
1363 " enabling anyway\n", name, 1 << cm);
1364 eeepc->cm_supported |= 1 << cm;
1368 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1370 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1371 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1372 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1373 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1376 static int __devinit eeepc_acpi_init(struct eeepc_laptop *eeepc)
1378 unsigned int init_flags;
1381 result = acpi_bus_get_status(eeepc->device);
1384 if (!eeepc->device->status.present) {
1385 pr_err("Hotkey device not present, aborting\n");
1389 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1390 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1392 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1393 pr_err("Hotkey initialization failed\n");
1397 /* get control methods supported */
1398 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1399 pr_err("Get control methods supported failed\n");
1403 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1408 static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc)
1411 * If the following call to set_acpi() fails, it's because there's no
1412 * camera so we can ignore the error.
1414 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1415 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1418 static bool eeepc_device_present;
1420 static int __devinit eeepc_acpi_add(struct acpi_device *device)
1422 struct eeepc_laptop *eeepc;
1425 pr_notice(EEEPC_LAPTOP_NAME "\n");
1426 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1429 eeepc->handle = device->handle;
1430 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1431 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1432 device->driver_data = eeepc;
1433 eeepc->device = device;
1435 eeepc->hotplug_disabled = hotplug_disabled;
1437 eeepc_dmi_check(eeepc);
1439 result = eeepc_acpi_init(eeepc);
1442 eeepc_enable_camera(eeepc);
1445 * Register the platform device first. It is used as a parent for the
1446 * sub-devices below.
1448 * Note that if there are multiple instances of this ACPI device it
1449 * will bail out, because the platform device is registered with a
1450 * fixed name. Of course it doesn't make sense to have more than one,
1451 * and machine-specific scripts find the fixed name convenient. But
1452 * It's also good for us to exclude multiple instances because both
1453 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1454 * (the EC and the wlan PCI slot respectively).
1456 result = eeepc_platform_init(eeepc);
1460 if (!acpi_video_backlight_support()) {
1461 result = eeepc_backlight_init(eeepc);
1463 goto fail_backlight;
1465 pr_info("Backlight controlled by ACPI video driver\n");
1467 result = eeepc_input_init(eeepc);
1471 result = eeepc_hwmon_init(eeepc);
1475 result = eeepc_led_init(eeepc);
1479 result = eeepc_rfkill_init(eeepc);
1483 eeepc_device_present = true;
1487 eeepc_led_exit(eeepc);
1489 eeepc_hwmon_exit(eeepc);
1491 eeepc_input_exit(eeepc);
1493 eeepc_backlight_exit(eeepc);
1495 eeepc_platform_exit(eeepc);
1502 static int eeepc_acpi_remove(struct acpi_device *device, int type)
1504 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1506 eeepc_backlight_exit(eeepc);
1507 eeepc_rfkill_exit(eeepc);
1508 eeepc_input_exit(eeepc);
1509 eeepc_hwmon_exit(eeepc);
1510 eeepc_led_exit(eeepc);
1511 eeepc_platform_exit(eeepc);
1518 static const struct acpi_device_id eeepc_device_ids[] = {
1519 {EEEPC_ACPI_HID, 0},
1522 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1524 static struct acpi_driver eeepc_acpi_driver = {
1525 .name = EEEPC_LAPTOP_NAME,
1526 .class = EEEPC_ACPI_CLASS,
1527 .owner = THIS_MODULE,
1528 .ids = eeepc_device_ids,
1529 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1531 .add = eeepc_acpi_add,
1532 .remove = eeepc_acpi_remove,
1533 .notify = eeepc_acpi_notify,
1538 static int __init eeepc_laptop_init(void)
1542 result = platform_driver_register(&platform_driver);
1546 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1548 goto fail_acpi_driver;
1550 if (!eeepc_device_present) {
1552 goto fail_no_device;
1558 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1560 platform_driver_unregister(&platform_driver);
1564 static void __exit eeepc_laptop_exit(void)
1566 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1567 platform_driver_unregister(&platform_driver);
1570 module_init(eeepc_laptop_init);
1571 module_exit(eeepc_laptop_exit);