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 device *hwmon_device;
169 struct backlight_device *backlight_device;
171 struct input_dev *inputdev;
173 struct rfkill *wlan_rfkill;
174 struct rfkill *bluetooth_rfkill;
175 struct rfkill *wwan3g_rfkill;
176 struct rfkill *wimax_rfkill;
178 struct hotplug_slot *hotplug_slot;
179 struct mutex hotplug_lock;
181 struct led_classdev tpd_led;
183 struct workqueue_struct *led_workqueue;
184 struct work_struct tpd_led_work;
190 static int write_acpi_int(acpi_handle handle, const char *method, int val)
192 struct acpi_object_list params;
193 union acpi_object in_obj;
197 params.pointer = &in_obj;
198 in_obj.type = ACPI_TYPE_INTEGER;
199 in_obj.integer.value = val;
201 status = acpi_evaluate_object(handle, (char *)method, ¶ms, NULL);
202 return (status == AE_OK ? 0 : -1);
205 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
208 unsigned long long result;
210 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
211 if (ACPI_FAILURE(status)) {
220 static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
222 const char *method = cm_setv[cm];
226 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
229 if (write_acpi_int(eeepc->handle, method, value))
230 pr_warning("Error writing %s\n", method);
234 static int get_acpi(struct eeepc_laptop *eeepc, int cm)
236 const char *method = cm_getv[cm];
241 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
244 if (read_acpi_int(eeepc->handle, method, &value))
245 pr_warning("Error reading %s\n", method);
249 static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
252 const char *method = cm_setv[cm];
257 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
260 status = acpi_get_handle(eeepc->handle, (char *)method,
262 if (status != AE_OK) {
263 pr_warning("Error finding %s\n", method);
273 static int parse_arg(const char *buf, unsigned long count, int *val)
277 if (sscanf(buf, "%i", val) != 1)
282 static ssize_t store_sys_acpi(struct device *dev, int cm,
283 const char *buf, size_t count)
285 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
288 rv = parse_arg(buf, count, &value);
290 value = set_acpi(eeepc, cm, value);
296 static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
298 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
299 int value = get_acpi(eeepc, cm);
303 return sprintf(buf, "%d\n", value);
306 #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
307 static ssize_t show_##_name(struct device *dev, \
308 struct device_attribute *attr, \
311 return show_sys_acpi(dev, _cm, buf); \
313 static ssize_t store_##_name(struct device *dev, \
314 struct device_attribute *attr, \
315 const char *buf, size_t count) \
317 return store_sys_acpi(dev, _cm, buf, count); \
319 static struct device_attribute dev_attr_##_name = { \
321 .name = __stringify(_name), \
323 .show = show_##_name, \
324 .store = store_##_name, \
327 EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
328 EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
329 EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
336 static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
338 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
339 c->num = (c->cur >> 8) & 0xff;
341 if (c->cur < 0 || c->num <= 0 || c->num > 12)
346 static ssize_t show_available_cpufv(struct device *dev,
347 struct device_attribute *attr,
350 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
351 struct eeepc_cpufv c;
355 if (get_cpufv(eeepc, &c))
357 for (i = 0; i < c.num; i++)
358 len += sprintf(buf + len, "%d ", i);
359 len += sprintf(buf + len, "\n");
363 static ssize_t show_cpufv(struct device *dev,
364 struct device_attribute *attr,
367 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
368 struct eeepc_cpufv c;
370 if (get_cpufv(eeepc, &c))
372 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
375 static ssize_t store_cpufv(struct device *dev,
376 struct device_attribute *attr,
377 const char *buf, size_t count)
379 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
380 struct eeepc_cpufv c;
383 if (eeepc->cpufv_disabled)
385 if (get_cpufv(eeepc, &c))
387 rv = parse_arg(buf, count, &value);
390 if (!rv || value < 0 || value >= c.num)
392 set_acpi(eeepc, CM_ASL_CPUFV, value);
396 static ssize_t show_cpufv_disabled(struct device *dev,
397 struct device_attribute *attr,
400 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
402 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
405 static ssize_t store_cpufv_disabled(struct device *dev,
406 struct device_attribute *attr,
407 const char *buf, size_t count)
409 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
412 rv = parse_arg(buf, count, &value);
418 if (eeepc->cpufv_disabled)
419 pr_warning("cpufv enabled (not officially supported "
421 eeepc->cpufv_disabled = false;
431 static struct device_attribute dev_attr_cpufv = {
439 static struct device_attribute dev_attr_available_cpufv = {
441 .name = "available_cpufv",
443 .show = show_available_cpufv
446 static struct device_attribute dev_attr_cpufv_disabled = {
448 .name = "cpufv_disabled",
450 .show = show_cpufv_disabled,
451 .store = store_cpufv_disabled
455 static struct attribute *platform_attributes[] = {
456 &dev_attr_camera.attr,
457 &dev_attr_cardr.attr,
459 &dev_attr_cpufv.attr,
460 &dev_attr_available_cpufv.attr,
461 &dev_attr_cpufv_disabled.attr,
465 static struct attribute_group platform_attribute_group = {
466 .attrs = platform_attributes
469 static int eeepc_platform_init(struct eeepc_laptop *eeepc)
473 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
474 if (!eeepc->platform_device)
476 platform_set_drvdata(eeepc->platform_device, eeepc);
478 result = platform_device_add(eeepc->platform_device);
480 goto fail_platform_device;
482 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
483 &platform_attribute_group);
489 platform_device_del(eeepc->platform_device);
490 fail_platform_device:
491 platform_device_put(eeepc->platform_device);
495 static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
497 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
498 &platform_attribute_group);
499 platform_device_unregister(eeepc->platform_device);
506 * These functions actually update the LED's, and are called from a
507 * workqueue. By doing this as separate work rather than when the LED
508 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
509 * potentially bad time, such as a timer interrupt.
511 static void tpd_led_update(struct work_struct *work)
513 struct eeepc_laptop *eeepc;
515 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
517 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
520 static void tpd_led_set(struct led_classdev *led_cdev,
521 enum led_brightness value)
523 struct eeepc_laptop *eeepc;
525 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
527 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
528 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
531 static int eeepc_led_init(struct eeepc_laptop *eeepc)
535 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
538 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
539 if (!eeepc->led_workqueue)
541 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
543 eeepc->tpd_led.name = "eeepc::touchpad";
544 eeepc->tpd_led.brightness_set = tpd_led_set;
545 eeepc->tpd_led.max_brightness = 1;
547 rv = led_classdev_register(&eeepc->platform_device->dev,
550 destroy_workqueue(eeepc->led_workqueue);
557 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
559 if (eeepc->tpd_led.dev)
560 led_classdev_unregister(&eeepc->tpd_led);
561 if (eeepc->led_workqueue)
562 destroy_workqueue(eeepc->led_workqueue);
567 * PCI hotplug (for wlan rfkill)
569 static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
571 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
576 static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc)
580 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
584 if (eeepc->wlan_rfkill)
585 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
587 mutex_lock(&eeepc->hotplug_lock);
589 if (eeepc->hotplug_slot) {
590 bus = pci_find_bus(0, 1);
592 pr_warning("Unable to find PCI bus 1?\n");
596 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
597 pr_err("Unable to read PCI config space?\n");
600 absent = (l == 0xffffffff);
602 if (blocked != absent) {
603 pr_warning("BIOS says wireless lan is %s, "
604 "but the pci device is %s\n",
605 blocked ? "blocked" : "unblocked",
606 absent ? "absent" : "present");
607 pr_warning("skipped wireless hotplug as probably "
608 "inappropriate for this model\n");
613 dev = pci_get_slot(bus, 0);
615 /* Device already present */
619 dev = pci_scan_single_device(bus, 0);
621 pci_bus_assign_resources(bus);
622 if (pci_bus_add_device(dev))
623 pr_err("Unable to hotplug wifi\n");
626 dev = pci_get_slot(bus, 0);
628 pci_remove_bus_device(dev);
635 mutex_unlock(&eeepc->hotplug_lock);
638 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
640 struct eeepc_laptop *eeepc = data;
642 if (event != ACPI_NOTIFY_BUS_CHECK)
645 eeepc_rfkill_hotplug(eeepc);
648 static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
654 status = acpi_get_handle(NULL, node, &handle);
656 if (ACPI_SUCCESS(status)) {
657 status = acpi_install_notify_handler(handle,
661 if (ACPI_FAILURE(status))
662 pr_warning("Failed to register notify on %s\n", node);
669 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
672 acpi_status status = AE_OK;
675 status = acpi_get_handle(NULL, node, &handle);
677 if (ACPI_SUCCESS(status)) {
678 status = acpi_remove_notify_handler(handle,
680 eeepc_rfkill_notify);
681 if (ACPI_FAILURE(status))
682 pr_err("Error removing rfkill notify handler %s\n",
687 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
690 struct eeepc_laptop *eeepc = hotplug_slot->private;
691 int val = get_acpi(eeepc, CM_ASL_WLAN);
693 if (val == 1 || val == 0)
701 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
703 kfree(hotplug_slot->info);
707 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
708 .owner = THIS_MODULE,
709 .get_adapter_status = eeepc_get_adapter_status,
710 .get_power_status = eeepc_get_adapter_status,
713 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
716 struct pci_bus *bus = pci_find_bus(0, 1);
719 pr_err("Unable to find wifi PCI bus\n");
723 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
724 if (!eeepc->hotplug_slot)
727 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
729 if (!eeepc->hotplug_slot->info)
732 eeepc->hotplug_slot->private = eeepc;
733 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
734 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
735 eeepc_get_adapter_status(eeepc->hotplug_slot,
736 &eeepc->hotplug_slot->info->adapter_status);
738 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
740 pr_err("Unable to register hotplug slot - %d\n", ret);
747 kfree(eeepc->hotplug_slot->info);
749 kfree(eeepc->hotplug_slot);
750 eeepc->hotplug_slot = NULL;
758 static int eeepc_rfkill_set(void *data, bool blocked)
760 acpi_handle handle = data;
762 return write_acpi_int(handle, NULL, !blocked);
765 static const struct rfkill_ops eeepc_rfkill_ops = {
766 .set_block = eeepc_rfkill_set,
769 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
770 struct rfkill **rfkill,
772 enum rfkill_type type, int cm)
777 result = acpi_setter_handle(eeepc, cm, &handle);
781 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
782 &eeepc_rfkill_ops, handle);
787 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
788 result = rfkill_register(*rfkill);
790 rfkill_destroy(*rfkill);
797 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
799 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
800 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
801 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
802 if (eeepc->wlan_rfkill) {
803 rfkill_unregister(eeepc->wlan_rfkill);
804 rfkill_destroy(eeepc->wlan_rfkill);
805 eeepc->wlan_rfkill = NULL;
808 * Refresh pci hotplug in case the rfkill state was changed after
809 * eeepc_unregister_rfkill_notifier()
811 eeepc_rfkill_hotplug(eeepc);
812 if (eeepc->hotplug_slot)
813 pci_hp_deregister(eeepc->hotplug_slot);
815 if (eeepc->bluetooth_rfkill) {
816 rfkill_unregister(eeepc->bluetooth_rfkill);
817 rfkill_destroy(eeepc->bluetooth_rfkill);
818 eeepc->bluetooth_rfkill = NULL;
820 if (eeepc->wwan3g_rfkill) {
821 rfkill_unregister(eeepc->wwan3g_rfkill);
822 rfkill_destroy(eeepc->wwan3g_rfkill);
823 eeepc->wwan3g_rfkill = NULL;
825 if (eeepc->wimax_rfkill) {
826 rfkill_unregister(eeepc->wimax_rfkill);
827 rfkill_destroy(eeepc->wimax_rfkill);
828 eeepc->wimax_rfkill = NULL;
832 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
836 mutex_init(&eeepc->hotplug_lock);
838 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
839 "eeepc-wlan", RFKILL_TYPE_WLAN,
842 if (result && result != -ENODEV)
845 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
846 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
849 if (result && result != -ENODEV)
852 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
853 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
856 if (result && result != -ENODEV)
859 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
860 "eeepc-wimax", RFKILL_TYPE_WIMAX,
863 if (result && result != -ENODEV)
866 if (eeepc->hotplug_disabled)
869 result = eeepc_setup_pci_hotplug(eeepc);
871 * If we get -EBUSY then something else is handling the PCI hotplug -
872 * don't fail in this case
874 if (result == -EBUSY)
877 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
878 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
879 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
881 * Refresh pci hotplug in case the rfkill state was changed during
884 eeepc_rfkill_hotplug(eeepc);
887 if (result && result != -ENODEV)
888 eeepc_rfkill_exit(eeepc);
893 * Platform driver - hibernate/resume callbacks
895 static int eeepc_hotk_thaw(struct device *device)
897 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
899 if (eeepc->wlan_rfkill) {
903 * Work around bios bug - acpi _PTS turns off the wireless led
904 * during suspend. Normally it restores it on resume, but
905 * we should kick it ourselves in case hibernation is aborted.
907 wlan = get_acpi(eeepc, CM_ASL_WLAN);
908 set_acpi(eeepc, CM_ASL_WLAN, wlan);
914 static int eeepc_hotk_restore(struct device *device)
916 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
918 /* Refresh both wlan rfkill state and pci hotplug */
919 if (eeepc->wlan_rfkill)
920 eeepc_rfkill_hotplug(eeepc);
922 if (eeepc->bluetooth_rfkill)
923 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
924 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
925 if (eeepc->wwan3g_rfkill)
926 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
927 get_acpi(eeepc, CM_ASL_3G) != 1);
928 if (eeepc->wimax_rfkill)
929 rfkill_set_sw_state(eeepc->wimax_rfkill,
930 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
935 static const struct dev_pm_ops eeepc_pm_ops = {
936 .thaw = eeepc_hotk_thaw,
937 .restore = eeepc_hotk_restore,
940 static struct platform_driver platform_driver = {
942 .name = EEEPC_LAPTOP_FILE,
943 .owner = THIS_MODULE,
952 #define EEEPC_EC_SC00 0x61
953 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
954 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
955 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
957 #define EEEPC_EC_SFB0 0xD0
958 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
960 static int eeepc_get_fan_pwm(void)
964 ec_read(EEEPC_EC_FAN_PWM, &value);
965 return value * 255 / 100;
968 static void eeepc_set_fan_pwm(int value)
970 value = SENSORS_LIMIT(value, 0, 255);
971 value = value * 100 / 255;
972 ec_write(EEEPC_EC_FAN_PWM, value);
975 static int eeepc_get_fan_rpm(void)
980 ec_read(EEEPC_EC_FAN_HRPM, &high);
981 ec_read(EEEPC_EC_FAN_LRPM, &low);
982 return high << 8 | low;
985 static int eeepc_get_fan_ctrl(void)
989 ec_read(EEEPC_EC_FAN_CTRL, &value);
991 return 1; /* manual */
993 return 2; /* automatic */
996 static void eeepc_set_fan_ctrl(int manual)
1000 ec_read(EEEPC_EC_FAN_CTRL, &value);
1005 ec_write(EEEPC_EC_FAN_CTRL, value);
1008 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1012 rv = parse_arg(buf, count, &value);
1018 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1020 return sprintf(buf, "%d\n", get());
1023 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1024 static ssize_t show_##_name(struct device *dev, \
1025 struct device_attribute *attr, \
1028 return show_sys_hwmon(_set, buf); \
1030 static ssize_t store_##_name(struct device *dev, \
1031 struct device_attribute *attr, \
1032 const char *buf, size_t count) \
1034 return store_sys_hwmon(_get, buf, count); \
1036 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1038 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1039 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1040 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1041 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1042 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1045 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1047 return sprintf(buf, "eeepc\n");
1049 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1051 static struct attribute *hwmon_attributes[] = {
1052 &sensor_dev_attr_pwm1.dev_attr.attr,
1053 &sensor_dev_attr_fan1_input.dev_attr.attr,
1054 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1055 &sensor_dev_attr_name.dev_attr.attr,
1059 static struct attribute_group hwmon_attribute_group = {
1060 .attrs = hwmon_attributes
1063 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1065 struct device *hwmon;
1067 hwmon = eeepc->hwmon_device;
1070 sysfs_remove_group(&hwmon->kobj,
1071 &hwmon_attribute_group);
1072 hwmon_device_unregister(hwmon);
1073 eeepc->hwmon_device = NULL;
1076 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1078 struct device *hwmon;
1081 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1082 if (IS_ERR(hwmon)) {
1083 pr_err("Could not register eeepc hwmon device\n");
1084 eeepc->hwmon_device = NULL;
1085 return PTR_ERR(hwmon);
1087 eeepc->hwmon_device = hwmon;
1088 result = sysfs_create_group(&hwmon->kobj,
1089 &hwmon_attribute_group);
1091 eeepc_hwmon_exit(eeepc);
1098 static int read_brightness(struct backlight_device *bd)
1100 struct eeepc_laptop *eeepc = bl_get_data(bd);
1102 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1105 static int set_brightness(struct backlight_device *bd, int value)
1107 struct eeepc_laptop *eeepc = bl_get_data(bd);
1109 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1112 static int update_bl_status(struct backlight_device *bd)
1114 return set_brightness(bd, bd->props.brightness);
1117 static struct backlight_ops eeepcbl_ops = {
1118 .get_brightness = read_brightness,
1119 .update_status = update_bl_status,
1122 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1124 struct backlight_device *bd = eeepc->backlight_device;
1125 int old = bd->props.brightness;
1127 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1132 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1134 struct backlight_properties props;
1135 struct backlight_device *bd;
1137 memset(&props, 0, sizeof(struct backlight_properties));
1138 props.max_brightness = 15;
1139 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1140 &eeepc->platform_device->dev, eeepc,
1141 &eeepcbl_ops, &props);
1143 pr_err("Could not register eeepc backlight device\n");
1144 eeepc->backlight_device = NULL;
1147 eeepc->backlight_device = bd;
1148 bd->props.brightness = read_brightness(bd);
1149 bd->props.power = FB_BLANK_UNBLANK;
1150 backlight_update_status(bd);
1154 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1156 if (eeepc->backlight_device)
1157 backlight_device_unregister(eeepc->backlight_device);
1158 eeepc->backlight_device = NULL;
1163 * Input device (i.e. hotkeys)
1165 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1167 struct input_dev *input;
1170 input = input_allocate_device();
1172 pr_info("Unable to allocate input device\n");
1176 input->name = "Asus EeePC extra buttons";
1177 input->phys = EEEPC_LAPTOP_FILE "/input0";
1178 input->id.bustype = BUS_HOST;
1179 input->dev.parent = &eeepc->platform_device->dev;
1181 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1183 pr_err("Unable to setup input device keymap\n");
1187 error = input_register_device(input);
1189 pr_err("Unable to register input device\n");
1190 goto err_free_keymap;
1193 eeepc->inputdev = input;
1197 sparse_keymap_free(input);
1199 input_free_device(input);
1203 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1205 if (eeepc->inputdev) {
1206 sparse_keymap_free(eeepc->inputdev);
1207 input_unregister_device(eeepc->inputdev);
1214 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1216 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1219 if (event > ACPI_MAX_SYS_NOTIFY)
1221 count = eeepc->event_count[event % 128]++;
1222 acpi_bus_generate_proc_event(device, event, count);
1223 acpi_bus_generate_netlink_event(device->pnp.device_class,
1224 dev_name(&device->dev), event,
1227 /* Brightness events are special */
1228 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1230 /* Ignore them completely if the acpi video driver is used */
1231 if (eeepc->backlight_device != NULL) {
1232 int old_brightness, new_brightness;
1234 /* Update the backlight device. */
1235 old_brightness = eeepc_backlight_notify(eeepc);
1237 /* Convert event to keypress (obsolescent hack) */
1238 new_brightness = event - NOTIFY_BRN_MIN;
1240 if (new_brightness < old_brightness) {
1241 event = NOTIFY_BRN_MIN; /* brightness down */
1242 } else if (new_brightness > old_brightness) {
1243 event = NOTIFY_BRN_MAX; /* brightness up */
1246 * no change in brightness - already at min/max,
1247 * event will be desired value (or else ignored)
1250 sparse_keymap_report_event(eeepc->inputdev, event,
1254 /* Everything else is a bona-fide keypress event */
1255 sparse_keymap_report_event(eeepc->inputdev, event, 1, true);
1259 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1263 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1268 * Blacklist for setting cpufv (cpu speed).
1270 * EeePC 4G ("701") implements CFVS, but it is not supported
1271 * by the pre-installed OS, and the original option to change it
1272 * in the BIOS setup screen was removed in later versions.
1274 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1275 * this applies to all "701" models (4G/4G Surf/2G Surf).
1277 * So Asus made a deliberate decision not to support it on this model.
1278 * We have several reports that using it can cause the system to hang
1280 * The hang has also been reported on a "702" (Model name "8G"?).
1282 * We avoid dmi_check_system() / dmi_match(), because they use
1283 * substring matching. We don't want to affect the "701SD"
1284 * and "701SDX" models, because they do support S.H.E.
1286 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1287 eeepc->cpufv_disabled = true;
1288 pr_info("model %s does not officially support setting cpu "
1290 pr_info("cpufv disabled to avoid instability\n");
1294 * Blacklist for wlan hotplug
1296 * Eeepc 1005HA doesn't work like others models and don't need the
1297 * hotplug code. In fact, current hotplug code seems to unplug another
1300 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1301 strcmp(model, "1005PE") == 0) {
1302 eeepc->hotplug_disabled = true;
1303 pr_info("wlan hotplug disabled\n");
1307 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1311 /* Some BIOSes do not report cm although it is avaliable.
1312 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1313 if (!(eeepc->cm_supported & (1 << cm))
1314 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1315 pr_info("%s (%x) not reported by BIOS,"
1316 " enabling anyway\n", name, 1 << cm);
1317 eeepc->cm_supported |= 1 << cm;
1321 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1323 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1324 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1325 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1326 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1329 static int eeepc_acpi_init(struct eeepc_laptop *eeepc,
1330 struct acpi_device *device)
1332 unsigned int init_flags;
1335 result = acpi_bus_get_status(device);
1338 if (!device->status.present) {
1339 pr_err("Hotkey device not present, aborting\n");
1343 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1344 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1346 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1347 pr_err("Hotkey initialization failed\n");
1351 /* get control methods supported */
1352 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1353 pr_err("Get control methods supported failed\n");
1357 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1362 static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc)
1365 * If the following call to set_acpi() fails, it's because there's no
1366 * camera so we can ignore the error.
1368 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1369 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1372 static bool eeepc_device_present;
1374 static int __devinit eeepc_acpi_add(struct acpi_device *device)
1376 struct eeepc_laptop *eeepc;
1379 pr_notice(EEEPC_LAPTOP_NAME "\n");
1380 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1383 eeepc->handle = device->handle;
1384 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1385 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1386 device->driver_data = eeepc;
1388 eeepc->hotplug_disabled = hotplug_disabled;
1390 eeepc_dmi_check(eeepc);
1392 result = eeepc_acpi_init(eeepc, device);
1395 eeepc_enable_camera(eeepc);
1398 * Register the platform device first. It is used as a parent for the
1399 * sub-devices below.
1401 * Note that if there are multiple instances of this ACPI device it
1402 * will bail out, because the platform device is registered with a
1403 * fixed name. Of course it doesn't make sense to have more than one,
1404 * and machine-specific scripts find the fixed name convenient. But
1405 * It's also good for us to exclude multiple instances because both
1406 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1407 * (the EC and the wlan PCI slot respectively).
1409 result = eeepc_platform_init(eeepc);
1413 if (!acpi_video_backlight_support()) {
1414 result = eeepc_backlight_init(eeepc);
1416 goto fail_backlight;
1418 pr_info("Backlight controlled by ACPI video driver\n");
1420 result = eeepc_input_init(eeepc);
1424 result = eeepc_hwmon_init(eeepc);
1428 result = eeepc_led_init(eeepc);
1432 result = eeepc_rfkill_init(eeepc);
1436 eeepc_device_present = true;
1440 eeepc_led_exit(eeepc);
1442 eeepc_hwmon_exit(eeepc);
1444 eeepc_input_exit(eeepc);
1446 eeepc_backlight_exit(eeepc);
1448 eeepc_platform_exit(eeepc);
1455 static int eeepc_acpi_remove(struct acpi_device *device, int type)
1457 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1459 eeepc_backlight_exit(eeepc);
1460 eeepc_rfkill_exit(eeepc);
1461 eeepc_input_exit(eeepc);
1462 eeepc_hwmon_exit(eeepc);
1463 eeepc_led_exit(eeepc);
1464 eeepc_platform_exit(eeepc);
1471 static const struct acpi_device_id eeepc_device_ids[] = {
1472 {EEEPC_ACPI_HID, 0},
1475 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1477 static struct acpi_driver eeepc_acpi_driver = {
1478 .name = EEEPC_LAPTOP_NAME,
1479 .class = EEEPC_ACPI_CLASS,
1480 .owner = THIS_MODULE,
1481 .ids = eeepc_device_ids,
1482 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1484 .add = eeepc_acpi_add,
1485 .remove = eeepc_acpi_remove,
1486 .notify = eeepc_acpi_notify,
1491 static int __init eeepc_laptop_init(void)
1495 result = platform_driver_register(&platform_driver);
1499 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1501 goto fail_acpi_driver;
1503 if (!eeepc_device_present) {
1505 goto fail_no_device;
1511 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1513 platform_driver_unregister(&platform_driver);
1517 static void __exit eeepc_laptop_exit(void)
1519 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1520 platform_driver_unregister(&platform_driver);
1523 module_init(eeepc_laptop_init);
1524 module_exit(eeepc_laptop_exit);