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)
195 status = acpi_execute_simple_method(handle, (char *)method, val);
197 return (status == AE_OK ? 0 : -1);
200 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
203 unsigned long long result;
205 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
206 if (ACPI_FAILURE(status)) {
215 static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
217 const char *method = cm_setv[cm];
221 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
224 if (write_acpi_int(eeepc->handle, method, value))
225 pr_warn("Error writing %s\n", method);
229 static int get_acpi(struct eeepc_laptop *eeepc, int cm)
231 const char *method = cm_getv[cm];
236 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
239 if (read_acpi_int(eeepc->handle, method, &value))
240 pr_warn("Error reading %s\n", method);
244 static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
247 const char *method = cm_setv[cm];
252 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
255 status = acpi_get_handle(eeepc->handle, (char *)method,
257 if (status != AE_OK) {
258 pr_warn("Error finding %s\n", method);
268 static int parse_arg(const char *buf, unsigned long count, int *val)
272 if (sscanf(buf, "%i", val) != 1)
277 static ssize_t store_sys_acpi(struct device *dev, int cm,
278 const char *buf, size_t count)
280 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
283 rv = parse_arg(buf, count, &value);
285 value = set_acpi(eeepc, cm, value);
291 static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
293 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
294 int value = get_acpi(eeepc, cm);
298 return sprintf(buf, "%d\n", value);
301 #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
302 static ssize_t show_##_name(struct device *dev, \
303 struct device_attribute *attr, \
306 return show_sys_acpi(dev, _cm, buf); \
308 static ssize_t store_##_name(struct device *dev, \
309 struct device_attribute *attr, \
310 const char *buf, size_t count) \
312 return store_sys_acpi(dev, _cm, buf, count); \
314 static struct device_attribute dev_attr_##_name = { \
316 .name = __stringify(_name), \
318 .show = show_##_name, \
319 .store = store_##_name, \
322 EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
323 EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
324 EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
331 static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
333 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
334 c->num = (c->cur >> 8) & 0xff;
336 if (c->cur < 0 || c->num <= 0 || c->num > 12)
341 static ssize_t show_available_cpufv(struct device *dev,
342 struct device_attribute *attr,
345 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
346 struct eeepc_cpufv c;
350 if (get_cpufv(eeepc, &c))
352 for (i = 0; i < c.num; i++)
353 len += sprintf(buf + len, "%d ", i);
354 len += sprintf(buf + len, "\n");
358 static ssize_t show_cpufv(struct device *dev,
359 struct device_attribute *attr,
362 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
363 struct eeepc_cpufv c;
365 if (get_cpufv(eeepc, &c))
367 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
370 static ssize_t store_cpufv(struct device *dev,
371 struct device_attribute *attr,
372 const char *buf, size_t count)
374 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
375 struct eeepc_cpufv c;
378 if (eeepc->cpufv_disabled)
380 if (get_cpufv(eeepc, &c))
382 rv = parse_arg(buf, count, &value);
385 if (!rv || value < 0 || value >= c.num)
387 set_acpi(eeepc, CM_ASL_CPUFV, value);
391 static ssize_t show_cpufv_disabled(struct device *dev,
392 struct device_attribute *attr,
395 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
397 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
400 static ssize_t store_cpufv_disabled(struct device *dev,
401 struct device_attribute *attr,
402 const char *buf, size_t count)
404 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
407 rv = parse_arg(buf, count, &value);
413 if (eeepc->cpufv_disabled)
414 pr_warn("cpufv enabled (not officially supported "
416 eeepc->cpufv_disabled = false;
426 static struct device_attribute dev_attr_cpufv = {
434 static struct device_attribute dev_attr_available_cpufv = {
436 .name = "available_cpufv",
438 .show = show_available_cpufv
441 static struct device_attribute dev_attr_cpufv_disabled = {
443 .name = "cpufv_disabled",
445 .show = show_cpufv_disabled,
446 .store = store_cpufv_disabled
450 static struct attribute *platform_attributes[] = {
451 &dev_attr_camera.attr,
452 &dev_attr_cardr.attr,
454 &dev_attr_cpufv.attr,
455 &dev_attr_available_cpufv.attr,
456 &dev_attr_cpufv_disabled.attr,
460 static struct attribute_group platform_attribute_group = {
461 .attrs = platform_attributes
464 static int eeepc_platform_init(struct eeepc_laptop *eeepc)
468 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
469 if (!eeepc->platform_device)
471 platform_set_drvdata(eeepc->platform_device, eeepc);
473 result = platform_device_add(eeepc->platform_device);
475 goto fail_platform_device;
477 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
478 &platform_attribute_group);
484 platform_device_del(eeepc->platform_device);
485 fail_platform_device:
486 platform_device_put(eeepc->platform_device);
490 static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
492 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
493 &platform_attribute_group);
494 platform_device_unregister(eeepc->platform_device);
501 * These functions actually update the LED's, and are called from a
502 * workqueue. By doing this as separate work rather than when the LED
503 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
504 * potentially bad time, such as a timer interrupt.
506 static void tpd_led_update(struct work_struct *work)
508 struct eeepc_laptop *eeepc;
510 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
512 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
515 static void tpd_led_set(struct led_classdev *led_cdev,
516 enum led_brightness value)
518 struct eeepc_laptop *eeepc;
520 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
522 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
523 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
526 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
528 struct eeepc_laptop *eeepc;
530 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
532 return get_acpi(eeepc, CM_ASL_TPD);
535 static int eeepc_led_init(struct eeepc_laptop *eeepc)
539 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
542 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
543 if (!eeepc->led_workqueue)
545 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
547 eeepc->tpd_led.name = "eeepc::touchpad";
548 eeepc->tpd_led.brightness_set = tpd_led_set;
549 if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
550 eeepc->tpd_led.brightness_get = tpd_led_get;
551 eeepc->tpd_led.max_brightness = 1;
553 rv = led_classdev_register(&eeepc->platform_device->dev,
556 destroy_workqueue(eeepc->led_workqueue);
563 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
565 if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
566 led_classdev_unregister(&eeepc->tpd_led);
567 if (eeepc->led_workqueue)
568 destroy_workqueue(eeepc->led_workqueue);
573 * PCI hotplug (for wlan rfkill)
575 static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
577 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
582 static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
584 struct pci_dev *port;
587 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
591 if (eeepc->wlan_rfkill)
592 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
594 mutex_lock(&eeepc->hotplug_lock);
596 if (eeepc->hotplug_slot) {
597 port = acpi_get_pci_dev(handle);
599 pr_warning("Unable to find port\n");
603 bus = port->subordinate;
606 pr_warn("Unable to find PCI bus 1?\n");
610 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
611 pr_err("Unable to read PCI config space?\n");
615 absent = (l == 0xffffffff);
617 if (blocked != absent) {
618 pr_warn("BIOS says wireless lan is %s, "
619 "but the pci device is %s\n",
620 blocked ? "blocked" : "unblocked",
621 absent ? "absent" : "present");
622 pr_warn("skipped wireless hotplug as probably "
623 "inappropriate for this model\n");
628 dev = pci_get_slot(bus, 0);
630 /* Device already present */
634 dev = pci_scan_single_device(bus, 0);
636 pci_bus_assign_resources(bus);
637 if (pci_bus_add_device(dev))
638 pr_err("Unable to hotplug wifi\n");
641 dev = pci_get_slot(bus, 0);
643 pci_stop_and_remove_bus_device(dev);
652 mutex_unlock(&eeepc->hotplug_lock);
655 static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
657 acpi_status status = AE_OK;
660 status = acpi_get_handle(NULL, node, &handle);
662 if (ACPI_SUCCESS(status))
663 eeepc_rfkill_hotplug(eeepc, handle);
666 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
668 struct eeepc_laptop *eeepc = data;
670 if (event != ACPI_NOTIFY_BUS_CHECK)
673 eeepc_rfkill_hotplug(eeepc, handle);
676 static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
682 status = acpi_get_handle(NULL, node, &handle);
684 if (ACPI_SUCCESS(status)) {
685 status = acpi_install_notify_handler(handle,
689 if (ACPI_FAILURE(status))
690 pr_warn("Failed to register notify on %s\n", node);
693 * Refresh pci hotplug in case the rfkill state was
694 * changed during setup.
696 eeepc_rfkill_hotplug(eeepc, handle);
703 static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
706 acpi_status status = AE_OK;
709 status = acpi_get_handle(NULL, node, &handle);
711 if (ACPI_SUCCESS(status)) {
712 status = acpi_remove_notify_handler(handle,
714 eeepc_rfkill_notify);
715 if (ACPI_FAILURE(status))
716 pr_err("Error removing rfkill notify handler %s\n",
719 * Refresh pci hotplug in case the rfkill
720 * state was changed after
721 * eeepc_unregister_rfkill_notifier()
723 eeepc_rfkill_hotplug(eeepc, handle);
727 static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
730 struct eeepc_laptop *eeepc = hotplug_slot->private;
731 int val = get_acpi(eeepc, CM_ASL_WLAN);
733 if (val == 1 || val == 0)
741 static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
743 kfree(hotplug_slot->info);
747 static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
748 .owner = THIS_MODULE,
749 .get_adapter_status = eeepc_get_adapter_status,
750 .get_power_status = eeepc_get_adapter_status,
753 static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
756 struct pci_bus *bus = pci_find_bus(0, 1);
759 pr_err("Unable to find wifi PCI bus\n");
763 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
764 if (!eeepc->hotplug_slot)
767 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
769 if (!eeepc->hotplug_slot->info)
772 eeepc->hotplug_slot->private = eeepc;
773 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
774 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
775 eeepc_get_adapter_status(eeepc->hotplug_slot,
776 &eeepc->hotplug_slot->info->adapter_status);
778 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
780 pr_err("Unable to register hotplug slot - %d\n", ret);
787 kfree(eeepc->hotplug_slot->info);
789 kfree(eeepc->hotplug_slot);
790 eeepc->hotplug_slot = NULL;
798 static int eeepc_rfkill_set(void *data, bool blocked)
800 acpi_handle handle = data;
802 return write_acpi_int(handle, NULL, !blocked);
805 static const struct rfkill_ops eeepc_rfkill_ops = {
806 .set_block = eeepc_rfkill_set,
809 static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
810 struct rfkill **rfkill,
812 enum rfkill_type type, int cm)
817 result = acpi_setter_handle(eeepc, cm, &handle);
821 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
822 &eeepc_rfkill_ops, handle);
827 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
828 result = rfkill_register(*rfkill);
830 rfkill_destroy(*rfkill);
837 static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
839 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
840 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
841 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
842 if (eeepc->wlan_rfkill) {
843 rfkill_unregister(eeepc->wlan_rfkill);
844 rfkill_destroy(eeepc->wlan_rfkill);
845 eeepc->wlan_rfkill = NULL;
848 if (eeepc->hotplug_slot)
849 pci_hp_deregister(eeepc->hotplug_slot);
851 if (eeepc->bluetooth_rfkill) {
852 rfkill_unregister(eeepc->bluetooth_rfkill);
853 rfkill_destroy(eeepc->bluetooth_rfkill);
854 eeepc->bluetooth_rfkill = NULL;
856 if (eeepc->wwan3g_rfkill) {
857 rfkill_unregister(eeepc->wwan3g_rfkill);
858 rfkill_destroy(eeepc->wwan3g_rfkill);
859 eeepc->wwan3g_rfkill = NULL;
861 if (eeepc->wimax_rfkill) {
862 rfkill_unregister(eeepc->wimax_rfkill);
863 rfkill_destroy(eeepc->wimax_rfkill);
864 eeepc->wimax_rfkill = NULL;
868 static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
872 mutex_init(&eeepc->hotplug_lock);
874 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
875 "eeepc-wlan", RFKILL_TYPE_WLAN,
878 if (result && result != -ENODEV)
881 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
882 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
885 if (result && result != -ENODEV)
888 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
889 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
892 if (result && result != -ENODEV)
895 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
896 "eeepc-wimax", RFKILL_TYPE_WIMAX,
899 if (result && result != -ENODEV)
902 if (eeepc->hotplug_disabled)
905 result = eeepc_setup_pci_hotplug(eeepc);
907 * If we get -EBUSY then something else is handling the PCI hotplug -
908 * don't fail in this case
910 if (result == -EBUSY)
913 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
914 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
915 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
918 if (result && result != -ENODEV)
919 eeepc_rfkill_exit(eeepc);
924 * Platform driver - hibernate/resume callbacks
926 static int eeepc_hotk_thaw(struct device *device)
928 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
930 if (eeepc->wlan_rfkill) {
934 * Work around bios bug - acpi _PTS turns off the wireless led
935 * during suspend. Normally it restores it on resume, but
936 * we should kick it ourselves in case hibernation is aborted.
938 wlan = get_acpi(eeepc, CM_ASL_WLAN);
939 set_acpi(eeepc, CM_ASL_WLAN, wlan);
945 static int eeepc_hotk_restore(struct device *device)
947 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
949 /* Refresh both wlan rfkill state and pci hotplug */
950 if (eeepc->wlan_rfkill) {
951 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P5");
952 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P6");
953 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P7");
956 if (eeepc->bluetooth_rfkill)
957 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
958 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
959 if (eeepc->wwan3g_rfkill)
960 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
961 get_acpi(eeepc, CM_ASL_3G) != 1);
962 if (eeepc->wimax_rfkill)
963 rfkill_set_sw_state(eeepc->wimax_rfkill,
964 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
969 static const struct dev_pm_ops eeepc_pm_ops = {
970 .thaw = eeepc_hotk_thaw,
971 .restore = eeepc_hotk_restore,
974 static struct platform_driver platform_driver = {
976 .name = EEEPC_LAPTOP_FILE,
977 .owner = THIS_MODULE,
986 #define EEEPC_EC_SC00 0x61
987 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
988 #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
989 #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
991 #define EEEPC_EC_SFB0 0xD0
992 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
994 static int eeepc_get_fan_pwm(void)
998 ec_read(EEEPC_EC_FAN_PWM, &value);
999 return value * 255 / 100;
1002 static void eeepc_set_fan_pwm(int value)
1004 value = clamp_val(value, 0, 255);
1005 value = value * 100 / 255;
1006 ec_write(EEEPC_EC_FAN_PWM, value);
1009 static int eeepc_get_fan_rpm(void)
1014 ec_read(EEEPC_EC_FAN_HRPM, &high);
1015 ec_read(EEEPC_EC_FAN_LRPM, &low);
1016 return high << 8 | low;
1019 static int eeepc_get_fan_ctrl(void)
1023 ec_read(EEEPC_EC_FAN_CTRL, &value);
1025 return 1; /* manual */
1027 return 2; /* automatic */
1030 static void eeepc_set_fan_ctrl(int manual)
1034 ec_read(EEEPC_EC_FAN_CTRL, &value);
1039 ec_write(EEEPC_EC_FAN_CTRL, value);
1042 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1046 rv = parse_arg(buf, count, &value);
1052 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1054 return sprintf(buf, "%d\n", get());
1057 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1058 static ssize_t show_##_name(struct device *dev, \
1059 struct device_attribute *attr, \
1062 return show_sys_hwmon(_set, buf); \
1064 static ssize_t store_##_name(struct device *dev, \
1065 struct device_attribute *attr, \
1066 const char *buf, size_t count) \
1068 return store_sys_hwmon(_get, buf, count); \
1070 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1072 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1073 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1074 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1075 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1076 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1079 show_name(struct device *dev, struct device_attribute *attr, char *buf)
1081 return sprintf(buf, "eeepc\n");
1083 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1085 static struct attribute *hwmon_attributes[] = {
1086 &sensor_dev_attr_pwm1.dev_attr.attr,
1087 &sensor_dev_attr_fan1_input.dev_attr.attr,
1088 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1089 &sensor_dev_attr_name.dev_attr.attr,
1093 static struct attribute_group hwmon_attribute_group = {
1094 .attrs = hwmon_attributes
1097 static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1099 struct device *hwmon;
1101 hwmon = eeepc->hwmon_device;
1104 sysfs_remove_group(&hwmon->kobj,
1105 &hwmon_attribute_group);
1106 hwmon_device_unregister(hwmon);
1107 eeepc->hwmon_device = NULL;
1110 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1112 struct device *hwmon;
1115 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1116 if (IS_ERR(hwmon)) {
1117 pr_err("Could not register eeepc hwmon device\n");
1118 eeepc->hwmon_device = NULL;
1119 return PTR_ERR(hwmon);
1121 eeepc->hwmon_device = hwmon;
1122 result = sysfs_create_group(&hwmon->kobj,
1123 &hwmon_attribute_group);
1125 eeepc_hwmon_exit(eeepc);
1132 static int read_brightness(struct backlight_device *bd)
1134 struct eeepc_laptop *eeepc = bl_get_data(bd);
1136 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1139 static int set_brightness(struct backlight_device *bd, int value)
1141 struct eeepc_laptop *eeepc = bl_get_data(bd);
1143 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1146 static int update_bl_status(struct backlight_device *bd)
1148 return set_brightness(bd, bd->props.brightness);
1151 static const struct backlight_ops eeepcbl_ops = {
1152 .get_brightness = read_brightness,
1153 .update_status = update_bl_status,
1156 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1158 struct backlight_device *bd = eeepc->backlight_device;
1159 int old = bd->props.brightness;
1161 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1166 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1168 struct backlight_properties props;
1169 struct backlight_device *bd;
1171 memset(&props, 0, sizeof(struct backlight_properties));
1172 props.type = BACKLIGHT_PLATFORM;
1173 props.max_brightness = 15;
1174 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1175 &eeepc->platform_device->dev, eeepc,
1176 &eeepcbl_ops, &props);
1178 pr_err("Could not register eeepc backlight device\n");
1179 eeepc->backlight_device = NULL;
1182 eeepc->backlight_device = bd;
1183 bd->props.brightness = read_brightness(bd);
1184 bd->props.power = FB_BLANK_UNBLANK;
1185 backlight_update_status(bd);
1189 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1191 if (eeepc->backlight_device)
1192 backlight_device_unregister(eeepc->backlight_device);
1193 eeepc->backlight_device = NULL;
1198 * Input device (i.e. hotkeys)
1200 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1202 struct input_dev *input;
1205 input = input_allocate_device();
1209 input->name = "Asus EeePC extra buttons";
1210 input->phys = EEEPC_LAPTOP_FILE "/input0";
1211 input->id.bustype = BUS_HOST;
1212 input->dev.parent = &eeepc->platform_device->dev;
1214 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1216 pr_err("Unable to setup input device keymap\n");
1220 error = input_register_device(input);
1222 pr_err("Unable to register input device\n");
1223 goto err_free_keymap;
1226 eeepc->inputdev = input;
1230 sparse_keymap_free(input);
1232 input_free_device(input);
1236 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1238 if (eeepc->inputdev) {
1239 sparse_keymap_free(eeepc->inputdev);
1240 input_unregister_device(eeepc->inputdev);
1242 eeepc->inputdev = NULL;
1248 static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
1250 if (!eeepc->inputdev)
1252 if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
1253 pr_info("Unknown key %x pressed\n", event);
1256 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1258 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1261 if (event > ACPI_MAX_SYS_NOTIFY)
1263 count = eeepc->event_count[event % 128]++;
1264 acpi_bus_generate_netlink_event(device->pnp.device_class,
1265 dev_name(&device->dev), event,
1268 /* Brightness events are special */
1269 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1271 /* Ignore them completely if the acpi video driver is used */
1272 if (eeepc->backlight_device != NULL) {
1273 int old_brightness, new_brightness;
1275 /* Update the backlight device. */
1276 old_brightness = eeepc_backlight_notify(eeepc);
1278 /* Convert event to keypress (obsolescent hack) */
1279 new_brightness = event - NOTIFY_BRN_MIN;
1281 if (new_brightness < old_brightness) {
1282 event = NOTIFY_BRN_MIN; /* brightness down */
1283 } else if (new_brightness > old_brightness) {
1284 event = NOTIFY_BRN_MAX; /* brightness up */
1287 * no change in brightness - already at min/max,
1288 * event will be desired value (or else ignored)
1291 eeepc_input_notify(eeepc, event);
1294 /* Everything else is a bona-fide keypress event */
1295 eeepc_input_notify(eeepc, event);
1299 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1303 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1308 * Blacklist for setting cpufv (cpu speed).
1310 * EeePC 4G ("701") implements CFVS, but it is not supported
1311 * by the pre-installed OS, and the original option to change it
1312 * in the BIOS setup screen was removed in later versions.
1314 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1315 * this applies to all "701" models (4G/4G Surf/2G Surf).
1317 * So Asus made a deliberate decision not to support it on this model.
1318 * We have several reports that using it can cause the system to hang
1320 * The hang has also been reported on a "702" (Model name "8G"?).
1322 * We avoid dmi_check_system() / dmi_match(), because they use
1323 * substring matching. We don't want to affect the "701SD"
1324 * and "701SDX" models, because they do support S.H.E.
1326 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1327 eeepc->cpufv_disabled = true;
1328 pr_info("model %s does not officially support setting cpu "
1330 pr_info("cpufv disabled to avoid instability\n");
1334 * Blacklist for wlan hotplug
1336 * Eeepc 1005HA doesn't work like others models and don't need the
1337 * hotplug code. In fact, current hotplug code seems to unplug another
1340 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1341 strcmp(model, "1005PE") == 0) {
1342 eeepc->hotplug_disabled = true;
1343 pr_info("wlan hotplug disabled\n");
1347 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1351 /* Some BIOSes do not report cm although it is available.
1352 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1353 if (!(eeepc->cm_supported & (1 << cm))
1354 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1355 pr_info("%s (%x) not reported by BIOS,"
1356 " enabling anyway\n", name, 1 << cm);
1357 eeepc->cm_supported |= 1 << cm;
1361 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1363 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1364 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1365 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1366 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1369 static int eeepc_acpi_init(struct eeepc_laptop *eeepc)
1371 unsigned int init_flags;
1374 result = acpi_bus_get_status(eeepc->device);
1377 if (!eeepc->device->status.present) {
1378 pr_err("Hotkey device not present, aborting\n");
1382 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1383 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1385 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1386 pr_err("Hotkey initialization failed\n");
1390 /* get control methods supported */
1391 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1392 pr_err("Get control methods supported failed\n");
1396 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1401 static void eeepc_enable_camera(struct eeepc_laptop *eeepc)
1404 * If the following call to set_acpi() fails, it's because there's no
1405 * camera so we can ignore the error.
1407 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1408 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1411 static bool eeepc_device_present;
1413 static int eeepc_acpi_add(struct acpi_device *device)
1415 struct eeepc_laptop *eeepc;
1418 pr_notice(EEEPC_LAPTOP_NAME "\n");
1419 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1422 eeepc->handle = device->handle;
1423 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1424 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1425 device->driver_data = eeepc;
1426 eeepc->device = device;
1428 eeepc->hotplug_disabled = hotplug_disabled;
1430 eeepc_dmi_check(eeepc);
1432 result = eeepc_acpi_init(eeepc);
1435 eeepc_enable_camera(eeepc);
1438 * Register the platform device first. It is used as a parent for the
1439 * sub-devices below.
1441 * Note that if there are multiple instances of this ACPI device it
1442 * will bail out, because the platform device is registered with a
1443 * fixed name. Of course it doesn't make sense to have more than one,
1444 * and machine-specific scripts find the fixed name convenient. But
1445 * It's also good for us to exclude multiple instances because both
1446 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1447 * (the EC and the wlan PCI slot respectively).
1449 result = eeepc_platform_init(eeepc);
1453 if (!acpi_video_backlight_support()) {
1454 result = eeepc_backlight_init(eeepc);
1456 goto fail_backlight;
1458 pr_info("Backlight controlled by ACPI video driver\n");
1460 result = eeepc_input_init(eeepc);
1464 result = eeepc_hwmon_init(eeepc);
1468 result = eeepc_led_init(eeepc);
1472 result = eeepc_rfkill_init(eeepc);
1476 eeepc_device_present = true;
1480 eeepc_led_exit(eeepc);
1482 eeepc_hwmon_exit(eeepc);
1484 eeepc_input_exit(eeepc);
1486 eeepc_backlight_exit(eeepc);
1488 eeepc_platform_exit(eeepc);
1495 static int eeepc_acpi_remove(struct acpi_device *device)
1497 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1499 eeepc_backlight_exit(eeepc);
1500 eeepc_rfkill_exit(eeepc);
1501 eeepc_input_exit(eeepc);
1502 eeepc_hwmon_exit(eeepc);
1503 eeepc_led_exit(eeepc);
1504 eeepc_platform_exit(eeepc);
1511 static const struct acpi_device_id eeepc_device_ids[] = {
1512 {EEEPC_ACPI_HID, 0},
1515 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1517 static struct acpi_driver eeepc_acpi_driver = {
1518 .name = EEEPC_LAPTOP_NAME,
1519 .class = EEEPC_ACPI_CLASS,
1520 .owner = THIS_MODULE,
1521 .ids = eeepc_device_ids,
1522 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1524 .add = eeepc_acpi_add,
1525 .remove = eeepc_acpi_remove,
1526 .notify = eeepc_acpi_notify,
1531 static int __init eeepc_laptop_init(void)
1535 result = platform_driver_register(&platform_driver);
1539 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1541 goto fail_acpi_driver;
1543 if (!eeepc_device_present) {
1545 goto fail_no_device;
1551 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1553 platform_driver_unregister(&platform_driver);
1557 static void __exit eeepc_laptop_exit(void)
1559 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1560 platform_driver_unregister(&platform_driver);
1563 module_init(eeepc_laptop_init);
1564 module_exit(eeepc_laptop_exit);