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 <linux/acpi.h>
32 #include <linux/uaccess.h>
33 #include <linux/input.h>
34 #include <linux/input/sparse-keymap.h>
35 #include <linux/rfkill.h>
36 #include <linux/pci.h>
37 #include <linux/pci_hotplug.h>
38 #include <linux/leds.h>
39 #include <linux/dmi.h>
41 #define EEEPC_LAPTOP_VERSION "0.1"
42 #define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver"
43 #define EEEPC_LAPTOP_FILE "eeepc"
45 #define EEEPC_ACPI_CLASS "hotkey"
46 #define EEEPC_ACPI_DEVICE_NAME "Hotkey"
47 #define EEEPC_ACPI_HID "ASUS010"
49 MODULE_AUTHOR("Corentin Chary, Eric Cooper");
50 MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
51 MODULE_LICENSE("GPL");
53 static bool hotplug_disabled;
55 module_param(hotplug_disabled, bool, 0444);
56 MODULE_PARM_DESC(hotplug_disabled,
57 "Disable hotplug for wireless device. "
58 "If your laptop need that, please report to "
59 "acpi4asus-user@lists.sourceforge.net.");
62 * Definitions for Asus EeePC
64 #define NOTIFY_BRN_MIN 0x20
65 #define NOTIFY_BRN_MAX 0x2f
68 DISABLE_ASL_WLAN = 0x0001,
69 DISABLE_ASL_BLUETOOTH = 0x0002,
70 DISABLE_ASL_IRDA = 0x0004,
71 DISABLE_ASL_CAMERA = 0x0008,
72 DISABLE_ASL_TV = 0x0010,
73 DISABLE_ASL_GPS = 0x0020,
74 DISABLE_ASL_DISPLAYSWITCH = 0x0040,
75 DISABLE_ASL_MODEM = 0x0080,
76 DISABLE_ASL_CARDREADER = 0x0100,
77 DISABLE_ASL_3G = 0x0200,
78 DISABLE_ASL_WIMAX = 0x0400,
79 DISABLE_ASL_HWCF = 0x0800
96 CM_ASL_CPUTEMPERATURE,
109 CM_ASL_PANELPOWER, /*P901*/
113 static const char *cm_getv[] = {
114 "WLDG", "BTHG", NULL, NULL,
115 "CAMG", NULL, NULL, NULL,
116 NULL, "PBLG", NULL, NULL,
117 "CFVG", NULL, NULL, NULL,
118 "USBG", NULL, NULL, "MODG",
119 "CRDG", "M3GG", "WIMG", "HWCF",
120 "LIDG", "TYPE", "PBPG", "TPDG"
123 static const char *cm_setv[] = {
124 "WLDS", "BTHS", NULL, NULL,
125 "CAMS", NULL, NULL, NULL,
126 "SDSP", "PBLS", "HDPS", NULL,
127 "CFVS", NULL, NULL, NULL,
128 "USBG", NULL, NULL, "MODS",
129 "CRDS", "M3GS", "WIMS", NULL,
130 NULL, NULL, "PBPS", "TPDS"
133 static const struct key_entry eeepc_keymap[] = {
134 { KE_KEY, 0x10, { KEY_WLAN } },
135 { KE_KEY, 0x11, { KEY_WLAN } },
136 { KE_KEY, 0x12, { KEY_PROG1 } },
137 { KE_KEY, 0x13, { KEY_MUTE } },
138 { KE_KEY, 0x14, { KEY_VOLUMEDOWN } },
139 { KE_KEY, 0x15, { KEY_VOLUMEUP } },
140 { KE_KEY, 0x16, { KEY_DISPLAY_OFF } },
141 { KE_KEY, 0x1a, { KEY_COFFEE } },
142 { KE_KEY, 0x1b, { KEY_ZOOM } },
143 { KE_KEY, 0x1c, { KEY_PROG2 } },
144 { KE_KEY, 0x1d, { KEY_PROG3 } },
145 { KE_KEY, NOTIFY_BRN_MIN, { KEY_BRIGHTNESSDOWN } },
146 { KE_KEY, NOTIFY_BRN_MAX, { KEY_BRIGHTNESSUP } },
147 { KE_KEY, 0x30, { KEY_SWITCHVIDEOMODE } },
148 { KE_KEY, 0x31, { KEY_SWITCHVIDEOMODE } },
149 { KE_KEY, 0x32, { KEY_SWITCHVIDEOMODE } },
150 { KE_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */
151 { KE_KEY, 0x38, { KEY_F14 } },
156 * This is the main structure, we can use it to store useful information
158 struct eeepc_laptop {
159 acpi_handle handle; /* the handle of the acpi device */
160 u32 cm_supported; /* the control methods supported
163 bool hotplug_disabled;
164 u16 event_count[128]; /* count for each event */
166 struct platform_device *platform_device;
167 struct acpi_device *device; /* the device we are in */
168 struct backlight_device *backlight_device;
170 struct input_dev *inputdev;
172 struct rfkill *wlan_rfkill;
173 struct rfkill *bluetooth_rfkill;
174 struct rfkill *wwan3g_rfkill;
175 struct rfkill *wimax_rfkill;
177 struct hotplug_slot *hotplug_slot;
178 struct mutex hotplug_lock;
180 struct led_classdev tpd_led;
182 struct workqueue_struct *led_workqueue;
183 struct work_struct tpd_led_work;
189 static int write_acpi_int(acpi_handle handle, const char *method, int val)
193 status = acpi_execute_simple_method(handle, (char *)method, val);
195 return (status == AE_OK ? 0 : -1);
198 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
201 unsigned long long result;
203 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
204 if (ACPI_FAILURE(status)) {
213 static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
215 const char *method = cm_setv[cm];
219 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
222 if (write_acpi_int(eeepc->handle, method, value))
223 pr_warn("Error writing %s\n", method);
227 static int get_acpi(struct eeepc_laptop *eeepc, int cm)
229 const char *method = cm_getv[cm];
234 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
237 if (read_acpi_int(eeepc->handle, method, &value))
238 pr_warn("Error reading %s\n", method);
242 static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
245 const char *method = cm_setv[cm];
250 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
253 status = acpi_get_handle(eeepc->handle, (char *)method,
255 if (status != AE_OK) {
256 pr_warn("Error finding %s\n", method);
266 static int parse_arg(const char *buf, unsigned long count, int *val)
270 if (sscanf(buf, "%i", val) != 1)
275 static ssize_t store_sys_acpi(struct device *dev, int cm,
276 const char *buf, size_t count)
278 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
281 rv = parse_arg(buf, count, &value);
283 value = set_acpi(eeepc, cm, value);
289 static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
291 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
292 int value = get_acpi(eeepc, cm);
296 return sprintf(buf, "%d\n", value);
299 #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
300 static ssize_t show_##_name(struct device *dev, \
301 struct device_attribute *attr, \
304 return show_sys_acpi(dev, _cm, buf); \
306 static ssize_t store_##_name(struct device *dev, \
307 struct device_attribute *attr, \
308 const char *buf, size_t count) \
310 return store_sys_acpi(dev, _cm, buf, count); \
312 static struct device_attribute dev_attr_##_name = { \
314 .name = __stringify(_name), \
316 .show = show_##_name, \
317 .store = store_##_name, \
320 EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
321 EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
322 EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
329 static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
331 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
332 c->num = (c->cur >> 8) & 0xff;
334 if (c->cur < 0 || c->num <= 0 || c->num > 12)
339 static ssize_t show_available_cpufv(struct device *dev,
340 struct device_attribute *attr,
343 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
344 struct eeepc_cpufv c;
348 if (get_cpufv(eeepc, &c))
350 for (i = 0; i < c.num; i++)
351 len += sprintf(buf + len, "%d ", i);
352 len += sprintf(buf + len, "\n");
356 static ssize_t show_cpufv(struct device *dev,
357 struct device_attribute *attr,
360 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
361 struct eeepc_cpufv c;
363 if (get_cpufv(eeepc, &c))
365 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
368 static ssize_t store_cpufv(struct device *dev,
369 struct device_attribute *attr,
370 const char *buf, size_t count)
372 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
373 struct eeepc_cpufv c;
376 if (eeepc->cpufv_disabled)
378 if (get_cpufv(eeepc, &c))
380 rv = parse_arg(buf, count, &value);
383 if (!rv || value < 0 || value >= c.num)
385 set_acpi(eeepc, CM_ASL_CPUFV, value);
389 static ssize_t show_cpufv_disabled(struct device *dev,
390 struct device_attribute *attr,
393 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
395 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
398 static ssize_t store_cpufv_disabled(struct device *dev,
399 struct device_attribute *attr,
400 const char *buf, size_t count)
402 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
405 rv = parse_arg(buf, count, &value);
411 if (eeepc->cpufv_disabled)
412 pr_warn("cpufv enabled (not officially supported "
414 eeepc->cpufv_disabled = false;
424 static struct device_attribute dev_attr_cpufv = {
432 static struct device_attribute dev_attr_available_cpufv = {
434 .name = "available_cpufv",
436 .show = show_available_cpufv
439 static struct device_attribute dev_attr_cpufv_disabled = {
441 .name = "cpufv_disabled",
443 .show = show_cpufv_disabled,
444 .store = store_cpufv_disabled
448 static struct attribute *platform_attributes[] = {
449 &dev_attr_camera.attr,
450 &dev_attr_cardr.attr,
452 &dev_attr_cpufv.attr,
453 &dev_attr_available_cpufv.attr,
454 &dev_attr_cpufv_disabled.attr,
458 static struct attribute_group platform_attribute_group = {
459 .attrs = platform_attributes
462 static int eeepc_platform_init(struct eeepc_laptop *eeepc)
466 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
467 if (!eeepc->platform_device)
469 platform_set_drvdata(eeepc->platform_device, eeepc);
471 result = platform_device_add(eeepc->platform_device);
473 goto fail_platform_device;
475 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
476 &platform_attribute_group);
482 platform_device_del(eeepc->platform_device);
483 fail_platform_device:
484 platform_device_put(eeepc->platform_device);
488 static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
490 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
491 &platform_attribute_group);
492 platform_device_unregister(eeepc->platform_device);
499 * These functions actually update the LED's, and are called from a
500 * workqueue. By doing this as separate work rather than when the LED
501 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
502 * potentially bad time, such as a timer interrupt.
504 static void tpd_led_update(struct work_struct *work)
506 struct eeepc_laptop *eeepc;
508 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
510 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
513 static void tpd_led_set(struct led_classdev *led_cdev,
514 enum led_brightness value)
516 struct eeepc_laptop *eeepc;
518 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
520 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
521 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
524 static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
526 struct eeepc_laptop *eeepc;
528 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
530 return get_acpi(eeepc, CM_ASL_TPD);
533 static int eeepc_led_init(struct eeepc_laptop *eeepc)
537 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
540 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
541 if (!eeepc->led_workqueue)
543 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
545 eeepc->tpd_led.name = "eeepc::touchpad";
546 eeepc->tpd_led.brightness_set = tpd_led_set;
547 if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
548 eeepc->tpd_led.brightness_get = tpd_led_get;
549 eeepc->tpd_led.max_brightness = 1;
551 rv = led_classdev_register(&eeepc->platform_device->dev,
554 destroy_workqueue(eeepc->led_workqueue);
561 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
563 if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
564 led_classdev_unregister(&eeepc->tpd_led);
565 if (eeepc->led_workqueue)
566 destroy_workqueue(eeepc->led_workqueue);
571 * PCI hotplug (for wlan rfkill)
573 static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
575 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
580 static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
582 struct pci_dev *port;
585 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
589 if (eeepc->wlan_rfkill)
590 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
592 mutex_lock(&eeepc->hotplug_lock);
593 pci_lock_rescan_remove();
595 if (eeepc->hotplug_slot) {
596 port = acpi_get_pci_dev(handle);
598 pr_warning("Unable to find port\n");
602 bus = port->subordinate;
605 pr_warn("Unable to find PCI bus 1?\n");
609 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
610 pr_err("Unable to read PCI config space?\n");
614 absent = (l == 0xffffffff);
616 if (blocked != absent) {
617 pr_warn("BIOS says wireless lan is %s, "
618 "but the pci device is %s\n",
619 blocked ? "blocked" : "unblocked",
620 absent ? "absent" : "present");
621 pr_warn("skipped wireless hotplug as probably "
622 "inappropriate for this model\n");
627 dev = pci_get_slot(bus, 0);
629 /* Device already present */
633 dev = pci_scan_single_device(bus, 0);
635 pci_bus_assign_resources(bus);
636 if (pci_bus_add_device(dev))
637 pr_err("Unable to hotplug wifi\n");
640 dev = pci_get_slot(bus, 0);
642 pci_stop_and_remove_bus_device(dev);
651 pci_unlock_rescan_remove();
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 DEVICE_ATTR(_name, _mode, show_##_name, store_##_name);
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);
1078 static struct attribute *hwmon_attrs[] = {
1079 &dev_attr_pwm1.attr,
1080 &dev_attr_fan1_input.attr,
1081 &dev_attr_pwm1_enable.attr,
1084 ATTRIBUTE_GROUPS(hwmon);
1086 static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1088 struct device *dev = &eeepc->platform_device->dev;
1089 struct device *hwmon;
1091 hwmon = devm_hwmon_device_register_with_groups(dev, "eeepc", NULL,
1093 if (IS_ERR(hwmon)) {
1094 pr_err("Could not register eeepc hwmon device\n");
1095 return PTR_ERR(hwmon);
1103 static int read_brightness(struct backlight_device *bd)
1105 struct eeepc_laptop *eeepc = bl_get_data(bd);
1107 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1110 static int set_brightness(struct backlight_device *bd, int value)
1112 struct eeepc_laptop *eeepc = bl_get_data(bd);
1114 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1117 static int update_bl_status(struct backlight_device *bd)
1119 return set_brightness(bd, bd->props.brightness);
1122 static const struct backlight_ops eeepcbl_ops = {
1123 .get_brightness = read_brightness,
1124 .update_status = update_bl_status,
1127 static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1129 struct backlight_device *bd = eeepc->backlight_device;
1130 int old = bd->props.brightness;
1132 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1137 static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1139 struct backlight_properties props;
1140 struct backlight_device *bd;
1142 memset(&props, 0, sizeof(struct backlight_properties));
1143 props.type = BACKLIGHT_PLATFORM;
1144 props.max_brightness = 15;
1145 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1146 &eeepc->platform_device->dev, eeepc,
1147 &eeepcbl_ops, &props);
1149 pr_err("Could not register eeepc backlight device\n");
1150 eeepc->backlight_device = NULL;
1153 eeepc->backlight_device = bd;
1154 bd->props.brightness = read_brightness(bd);
1155 bd->props.power = FB_BLANK_UNBLANK;
1156 backlight_update_status(bd);
1160 static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1162 if (eeepc->backlight_device)
1163 backlight_device_unregister(eeepc->backlight_device);
1164 eeepc->backlight_device = NULL;
1169 * Input device (i.e. hotkeys)
1171 static int eeepc_input_init(struct eeepc_laptop *eeepc)
1173 struct input_dev *input;
1176 input = input_allocate_device();
1180 input->name = "Asus EeePC extra buttons";
1181 input->phys = EEEPC_LAPTOP_FILE "/input0";
1182 input->id.bustype = BUS_HOST;
1183 input->dev.parent = &eeepc->platform_device->dev;
1185 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1187 pr_err("Unable to setup input device keymap\n");
1191 error = input_register_device(input);
1193 pr_err("Unable to register input device\n");
1194 goto err_free_keymap;
1197 eeepc->inputdev = input;
1201 sparse_keymap_free(input);
1203 input_free_device(input);
1207 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1209 if (eeepc->inputdev) {
1210 sparse_keymap_free(eeepc->inputdev);
1211 input_unregister_device(eeepc->inputdev);
1213 eeepc->inputdev = NULL;
1219 static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
1221 if (!eeepc->inputdev)
1223 if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
1224 pr_info("Unknown key %x pressed\n", event);
1227 static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1229 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1232 if (event > ACPI_MAX_SYS_NOTIFY)
1234 count = eeepc->event_count[event % 128]++;
1235 acpi_bus_generate_netlink_event(device->pnp.device_class,
1236 dev_name(&device->dev), event,
1239 /* Brightness events are special */
1240 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1242 /* Ignore them completely if the acpi video driver is used */
1243 if (eeepc->backlight_device != NULL) {
1244 int old_brightness, new_brightness;
1246 /* Update the backlight device. */
1247 old_brightness = eeepc_backlight_notify(eeepc);
1249 /* Convert event to keypress (obsolescent hack) */
1250 new_brightness = event - NOTIFY_BRN_MIN;
1252 if (new_brightness < old_brightness) {
1253 event = NOTIFY_BRN_MIN; /* brightness down */
1254 } else if (new_brightness > old_brightness) {
1255 event = NOTIFY_BRN_MAX; /* brightness up */
1258 * no change in brightness - already at min/max,
1259 * event will be desired value (or else ignored)
1262 eeepc_input_notify(eeepc, event);
1265 /* Everything else is a bona-fide keypress event */
1266 eeepc_input_notify(eeepc, event);
1270 static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1274 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1279 * Blacklist for setting cpufv (cpu speed).
1281 * EeePC 4G ("701") implements CFVS, but it is not supported
1282 * by the pre-installed OS, and the original option to change it
1283 * in the BIOS setup screen was removed in later versions.
1285 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1286 * this applies to all "701" models (4G/4G Surf/2G Surf).
1288 * So Asus made a deliberate decision not to support it on this model.
1289 * We have several reports that using it can cause the system to hang
1291 * The hang has also been reported on a "702" (Model name "8G"?).
1293 * We avoid dmi_check_system() / dmi_match(), because they use
1294 * substring matching. We don't want to affect the "701SD"
1295 * and "701SDX" models, because they do support S.H.E.
1297 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1298 eeepc->cpufv_disabled = true;
1299 pr_info("model %s does not officially support setting cpu "
1301 pr_info("cpufv disabled to avoid instability\n");
1305 * Blacklist for wlan hotplug
1307 * Eeepc 1005HA doesn't work like others models and don't need the
1308 * hotplug code. In fact, current hotplug code seems to unplug another
1311 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1312 strcmp(model, "1005PE") == 0) {
1313 eeepc->hotplug_disabled = true;
1314 pr_info("wlan hotplug disabled\n");
1318 static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1322 /* Some BIOSes do not report cm although it is available.
1323 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1324 if (!(eeepc->cm_supported & (1 << cm))
1325 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1326 pr_info("%s (%x) not reported by BIOS,"
1327 " enabling anyway\n", name, 1 << cm);
1328 eeepc->cm_supported |= 1 << cm;
1332 static void cmsg_quirks(struct eeepc_laptop *eeepc)
1334 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1335 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1336 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1337 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1340 static int eeepc_acpi_init(struct eeepc_laptop *eeepc)
1342 unsigned int init_flags;
1345 result = acpi_bus_get_status(eeepc->device);
1348 if (!eeepc->device->status.present) {
1349 pr_err("Hotkey device not present, aborting\n");
1353 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1354 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1356 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1357 pr_err("Hotkey initialization failed\n");
1361 /* get control methods supported */
1362 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1363 pr_err("Get control methods supported failed\n");
1367 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1372 static void eeepc_enable_camera(struct eeepc_laptop *eeepc)
1375 * If the following call to set_acpi() fails, it's because there's no
1376 * camera so we can ignore the error.
1378 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1379 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1382 static bool eeepc_device_present;
1384 static int eeepc_acpi_add(struct acpi_device *device)
1386 struct eeepc_laptop *eeepc;
1389 pr_notice(EEEPC_LAPTOP_NAME "\n");
1390 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1393 eeepc->handle = device->handle;
1394 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1395 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1396 device->driver_data = eeepc;
1397 eeepc->device = device;
1399 eeepc->hotplug_disabled = hotplug_disabled;
1401 eeepc_dmi_check(eeepc);
1403 result = eeepc_acpi_init(eeepc);
1406 eeepc_enable_camera(eeepc);
1409 * Register the platform device first. It is used as a parent for the
1410 * sub-devices below.
1412 * Note that if there are multiple instances of this ACPI device it
1413 * will bail out, because the platform device is registered with a
1414 * fixed name. Of course it doesn't make sense to have more than one,
1415 * and machine-specific scripts find the fixed name convenient. But
1416 * It's also good for us to exclude multiple instances because both
1417 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1418 * (the EC and the wlan PCI slot respectively).
1420 result = eeepc_platform_init(eeepc);
1424 if (!acpi_video_backlight_support()) {
1425 result = eeepc_backlight_init(eeepc);
1427 goto fail_backlight;
1429 pr_info("Backlight controlled by ACPI video driver\n");
1431 result = eeepc_input_init(eeepc);
1435 result = eeepc_hwmon_init(eeepc);
1439 result = eeepc_led_init(eeepc);
1443 result = eeepc_rfkill_init(eeepc);
1447 eeepc_device_present = true;
1451 eeepc_led_exit(eeepc);
1454 eeepc_input_exit(eeepc);
1456 eeepc_backlight_exit(eeepc);
1458 eeepc_platform_exit(eeepc);
1465 static int eeepc_acpi_remove(struct acpi_device *device)
1467 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1469 eeepc_backlight_exit(eeepc);
1470 eeepc_rfkill_exit(eeepc);
1471 eeepc_input_exit(eeepc);
1472 eeepc_led_exit(eeepc);
1473 eeepc_platform_exit(eeepc);
1480 static const struct acpi_device_id eeepc_device_ids[] = {
1481 {EEEPC_ACPI_HID, 0},
1484 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1486 static struct acpi_driver eeepc_acpi_driver = {
1487 .name = EEEPC_LAPTOP_NAME,
1488 .class = EEEPC_ACPI_CLASS,
1489 .owner = THIS_MODULE,
1490 .ids = eeepc_device_ids,
1491 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1493 .add = eeepc_acpi_add,
1494 .remove = eeepc_acpi_remove,
1495 .notify = eeepc_acpi_notify,
1500 static int __init eeepc_laptop_init(void)
1504 result = platform_driver_register(&platform_driver);
1508 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1510 goto fail_acpi_driver;
1512 if (!eeepc_device_present) {
1514 goto fail_no_device;
1520 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1522 platform_driver_unregister(&platform_driver);
1526 static void __exit eeepc_laptop_exit(void)
1528 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1529 platform_driver_unregister(&platform_driver);
1532 module_init(eeepc_laptop_init);
1533 module_exit(eeepc_laptop_exit);