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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * eeepc-laptop.c - Asus Eee PC extras
4 *
5 * Based on asus_acpi.c as patched for the Eee PC by Asus:
6 * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar
7 * Based on eee.c from eeepc-linux
8 */
9
10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/types.h>
16#include <linux/platform_device.h>
17#include <linux/backlight.h>
18#include <linux/fb.h>
19#include <linux/hwmon.h>
20#include <linux/hwmon-sysfs.h>
21#include <linux/slab.h>
22#include <linux/acpi.h>
23#include <linux/uaccess.h>
24#include <linux/input.h>
25#include <linux/input/sparse-keymap.h>
26#include <linux/rfkill.h>
27#include <linux/pci.h>
28#include <linux/pci_hotplug.h>
29#include <linux/leds.h>
30#include <linux/dmi.h>
31#include <acpi/video.h>
32
33#define EEEPC_LAPTOP_VERSION "0.1"
34#define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver"
35#define EEEPC_LAPTOP_FILE "eeepc"
36
37#define EEEPC_ACPI_CLASS "hotkey"
38#define EEEPC_ACPI_DEVICE_NAME "Hotkey"
39#define EEEPC_ACPI_HID "ASUS010"
40
41MODULE_AUTHOR("Corentin Chary, Eric Cooper");
42MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
43MODULE_LICENSE("GPL");
44
45static bool hotplug_disabled;
46
47module_param(hotplug_disabled, bool, 0444);
48MODULE_PARM_DESC(hotplug_disabled,
49 "Disable hotplug for wireless device. "
50 "If your laptop need that, please report to "
51 "acpi4asus-user@lists.sourceforge.net.");
52
53/*
54 * Definitions for Asus EeePC
55 */
56#define NOTIFY_BRN_MIN 0x20
57#define NOTIFY_BRN_MAX 0x2f
58
59enum {
60 DISABLE_ASL_WLAN = 0x0001,
61 DISABLE_ASL_BLUETOOTH = 0x0002,
62 DISABLE_ASL_IRDA = 0x0004,
63 DISABLE_ASL_CAMERA = 0x0008,
64 DISABLE_ASL_TV = 0x0010,
65 DISABLE_ASL_GPS = 0x0020,
66 DISABLE_ASL_DISPLAYSWITCH = 0x0040,
67 DISABLE_ASL_MODEM = 0x0080,
68 DISABLE_ASL_CARDREADER = 0x0100,
69 DISABLE_ASL_3G = 0x0200,
70 DISABLE_ASL_WIMAX = 0x0400,
71 DISABLE_ASL_HWCF = 0x0800
72};
73
74enum {
75 CM_ASL_WLAN = 0,
76 CM_ASL_BLUETOOTH,
77 CM_ASL_IRDA,
78 CM_ASL_1394,
79 CM_ASL_CAMERA,
80 CM_ASL_TV,
81 CM_ASL_GPS,
82 CM_ASL_DVDROM,
83 CM_ASL_DISPLAYSWITCH,
84 CM_ASL_PANELBRIGHT,
85 CM_ASL_BIOSFLASH,
86 CM_ASL_ACPIFLASH,
87 CM_ASL_CPUFV,
88 CM_ASL_CPUTEMPERATURE,
89 CM_ASL_FANCPU,
90 CM_ASL_FANCHASSIS,
91 CM_ASL_USBPORT1,
92 CM_ASL_USBPORT2,
93 CM_ASL_USBPORT3,
94 CM_ASL_MODEM,
95 CM_ASL_CARDREADER,
96 CM_ASL_3G,
97 CM_ASL_WIMAX,
98 CM_ASL_HWCF,
99 CM_ASL_LID,
100 CM_ASL_TYPE,
101 CM_ASL_PANELPOWER, /*P901*/
102 CM_ASL_TPD
103};
104
105static const char *cm_getv[] = {
106 "WLDG", "BTHG", NULL, NULL,
107 "CAMG", NULL, NULL, NULL,
108 NULL, "PBLG", NULL, NULL,
109 "CFVG", NULL, NULL, NULL,
110 "USBG", NULL, NULL, "MODG",
111 "CRDG", "M3GG", "WIMG", "HWCF",
112 "LIDG", "TYPE", "PBPG", "TPDG"
113};
114
115static const char *cm_setv[] = {
116 "WLDS", "BTHS", NULL, NULL,
117 "CAMS", NULL, NULL, NULL,
118 "SDSP", "PBLS", "HDPS", NULL,
119 "CFVS", NULL, NULL, NULL,
120 "USBG", NULL, NULL, "MODS",
121 "CRDS", "M3GS", "WIMS", NULL,
122 NULL, NULL, "PBPS", "TPDS"
123};
124
125static const struct key_entry eeepc_keymap[] = {
126 { KE_KEY, 0x10, { KEY_WLAN } },
127 { KE_KEY, 0x11, { KEY_WLAN } },
128 { KE_KEY, 0x12, { KEY_PROG1 } },
129 { KE_KEY, 0x13, { KEY_MUTE } },
130 { KE_KEY, 0x14, { KEY_VOLUMEDOWN } },
131 { KE_KEY, 0x15, { KEY_VOLUMEUP } },
132 { KE_KEY, 0x16, { KEY_DISPLAY_OFF } },
133 { KE_KEY, 0x1a, { KEY_COFFEE } },
134 { KE_KEY, 0x1b, { KEY_ZOOM } },
135 { KE_KEY, 0x1c, { KEY_PROG2 } },
136 { KE_KEY, 0x1d, { KEY_PROG3 } },
137 { KE_KEY, NOTIFY_BRN_MIN, { KEY_BRIGHTNESSDOWN } },
138 { KE_KEY, NOTIFY_BRN_MAX, { KEY_BRIGHTNESSUP } },
139 { KE_KEY, 0x30, { KEY_SWITCHVIDEOMODE } },
140 { KE_KEY, 0x31, { KEY_SWITCHVIDEOMODE } },
141 { KE_KEY, 0x32, { KEY_SWITCHVIDEOMODE } },
142 { KE_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */
143 { KE_KEY, 0x38, { KEY_F14 } },
144 { KE_IGNORE, 0x50, { KEY_RESERVED } }, /* AC plugged */
145 { KE_IGNORE, 0x51, { KEY_RESERVED } }, /* AC unplugged */
146 { KE_END, 0 },
147};
148
149/*
150 * This is the main structure, we can use it to store useful information
151 */
152struct eeepc_laptop {
153 acpi_handle handle; /* the handle of the acpi device */
154 u32 cm_supported; /* the control methods supported
155 by this BIOS */
156 bool cpufv_disabled;
157 bool hotplug_disabled;
158 u16 event_count[128]; /* count for each event */
159
160 struct platform_device *platform_device;
161 struct acpi_device *device; /* the device we are in */
162 struct backlight_device *backlight_device;
163
164 struct input_dev *inputdev;
165
166 struct rfkill *wlan_rfkill;
167 struct rfkill *bluetooth_rfkill;
168 struct rfkill *wwan3g_rfkill;
169 struct rfkill *wimax_rfkill;
170
171 struct hotplug_slot hotplug_slot;
172 struct mutex hotplug_lock;
173
174 struct led_classdev tpd_led;
175 int tpd_led_wk;
176 struct workqueue_struct *led_workqueue;
177 struct work_struct tpd_led_work;
178};
179
180/*
181 * ACPI Helpers
182 */
183static int write_acpi_int(acpi_handle handle, const char *method, int val)
184{
185 acpi_status status;
186
187 status = acpi_execute_simple_method(handle, (char *)method, val);
188
189 return (status == AE_OK ? 0 : -1);
190}
191
192static int read_acpi_int(acpi_handle handle, const char *method, int *val)
193{
194 acpi_status status;
195 unsigned long long result;
196
197 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
198 if (ACPI_FAILURE(status)) {
199 *val = -1;
200 return -1;
201 } else {
202 *val = result;
203 return 0;
204 }
205}
206
207static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
208{
209 const char *method = cm_setv[cm];
210
211 if (method == NULL)
212 return -ENODEV;
213 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
214 return -ENODEV;
215
216 if (write_acpi_int(eeepc->handle, method, value))
217 pr_warn("Error writing %s\n", method);
218 return 0;
219}
220
221static int get_acpi(struct eeepc_laptop *eeepc, int cm)
222{
223 const char *method = cm_getv[cm];
224 int value;
225
226 if (method == NULL)
227 return -ENODEV;
228 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
229 return -ENODEV;
230
231 if (read_acpi_int(eeepc->handle, method, &value))
232 pr_warn("Error reading %s\n", method);
233 return value;
234}
235
236static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
237 acpi_handle *handle)
238{
239 const char *method = cm_setv[cm];
240 acpi_status status;
241
242 if (method == NULL)
243 return -ENODEV;
244 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
245 return -ENODEV;
246
247 status = acpi_get_handle(eeepc->handle, (char *)method,
248 handle);
249 if (status != AE_OK) {
250 pr_warn("Error finding %s\n", method);
251 return -ENODEV;
252 }
253 return 0;
254}
255
256
257/*
258 * Sys helpers
259 */
260static int parse_arg(const char *buf, int *val)
261{
262 if (sscanf(buf, "%i", val) != 1)
263 return -EINVAL;
264 return 0;
265}
266
267static ssize_t store_sys_acpi(struct device *dev, int cm,
268 const char *buf, size_t count)
269{
270 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
271 int rv, value;
272
273 rv = parse_arg(buf, &value);
274 if (rv < 0)
275 return rv;
276 rv = set_acpi(eeepc, cm, value);
277 if (rv < 0)
278 return -EIO;
279 return count;
280}
281
282static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
283{
284 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
285 int value = get_acpi(eeepc, cm);
286
287 if (value < 0)
288 return -EIO;
289 return sprintf(buf, "%d\n", value);
290}
291
292#define EEEPC_ACPI_SHOW_FUNC(_name, _cm) \
293 static ssize_t _name##_show(struct device *dev, \
294 struct device_attribute *attr, \
295 char *buf) \
296 { \
297 return show_sys_acpi(dev, _cm, buf); \
298 }
299
300#define EEEPC_ACPI_STORE_FUNC(_name, _cm) \
301 static ssize_t _name##_store(struct device *dev, \
302 struct device_attribute *attr, \
303 const char *buf, size_t count) \
304 { \
305 return store_sys_acpi(dev, _cm, buf, count); \
306 }
307
308#define EEEPC_CREATE_DEVICE_ATTR_RW(_name, _cm) \
309 EEEPC_ACPI_SHOW_FUNC(_name, _cm) \
310 EEEPC_ACPI_STORE_FUNC(_name, _cm) \
311 static DEVICE_ATTR_RW(_name)
312
313#define EEEPC_CREATE_DEVICE_ATTR_WO(_name, _cm) \
314 EEEPC_ACPI_STORE_FUNC(_name, _cm) \
315 static DEVICE_ATTR_WO(_name)
316
317EEEPC_CREATE_DEVICE_ATTR_RW(camera, CM_ASL_CAMERA);
318EEEPC_CREATE_DEVICE_ATTR_RW(cardr, CM_ASL_CARDREADER);
319EEEPC_CREATE_DEVICE_ATTR_WO(disp, CM_ASL_DISPLAYSWITCH);
320
321struct eeepc_cpufv {
322 int num;
323 int cur;
324};
325
326static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
327{
328 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
329 if (c->cur < 0)
330 return -ENODEV;
331
332 c->num = (c->cur >> 8) & 0xff;
333 c->cur &= 0xff;
334 if (c->num == 0 || c->num > 12)
335 return -ENODEV;
336 return 0;
337}
338
339static ssize_t available_cpufv_show(struct device *dev,
340 struct device_attribute *attr,
341 char *buf)
342{
343 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
344 struct eeepc_cpufv c;
345 int i;
346 ssize_t len = 0;
347
348 if (get_cpufv(eeepc, &c))
349 return -ENODEV;
350 for (i = 0; i < c.num; i++)
351 len += sprintf(buf + len, "%d ", i);
352 len += sprintf(buf + len, "\n");
353 return len;
354}
355
356static ssize_t cpufv_show(struct device *dev,
357 struct device_attribute *attr,
358 char *buf)
359{
360 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
361 struct eeepc_cpufv c;
362
363 if (get_cpufv(eeepc, &c))
364 return -ENODEV;
365 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
366}
367
368static ssize_t cpufv_store(struct device *dev,
369 struct device_attribute *attr,
370 const char *buf, size_t count)
371{
372 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
373 struct eeepc_cpufv c;
374 int rv, value;
375
376 if (eeepc->cpufv_disabled)
377 return -EPERM;
378 if (get_cpufv(eeepc, &c))
379 return -ENODEV;
380 rv = parse_arg(buf, &value);
381 if (rv < 0)
382 return rv;
383 if (value < 0 || value >= c.num)
384 return -EINVAL;
385 rv = set_acpi(eeepc, CM_ASL_CPUFV, value);
386 if (rv)
387 return rv;
388 return count;
389}
390
391static ssize_t cpufv_disabled_show(struct device *dev,
392 struct device_attribute *attr,
393 char *buf)
394{
395 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
396
397 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
398}
399
400static ssize_t cpufv_disabled_store(struct device *dev,
401 struct device_attribute *attr,
402 const char *buf, size_t count)
403{
404 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
405 int rv, value;
406
407 rv = parse_arg(buf, &value);
408 if (rv < 0)
409 return rv;
410
411 switch (value) {
412 case 0:
413 if (eeepc->cpufv_disabled)
414 pr_warn("cpufv enabled (not officially supported on this model)\n");
415 eeepc->cpufv_disabled = false;
416 return count;
417 case 1:
418 return -EPERM;
419 default:
420 return -EINVAL;
421 }
422}
423
424
425static DEVICE_ATTR_RW(cpufv);
426static DEVICE_ATTR_RO(available_cpufv);
427static DEVICE_ATTR_RW(cpufv_disabled);
428
429static struct attribute *platform_attributes[] = {
430 &dev_attr_camera.attr,
431 &dev_attr_cardr.attr,
432 &dev_attr_disp.attr,
433 &dev_attr_cpufv.attr,
434 &dev_attr_available_cpufv.attr,
435 &dev_attr_cpufv_disabled.attr,
436 NULL
437};
438
439static const struct attribute_group platform_attribute_group = {
440 .attrs = platform_attributes
441};
442
443static int eeepc_platform_init(struct eeepc_laptop *eeepc)
444{
445 int result;
446
447 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, PLATFORM_DEVID_NONE);
448 if (!eeepc->platform_device)
449 return -ENOMEM;
450 platform_set_drvdata(eeepc->platform_device, eeepc);
451
452 result = platform_device_add(eeepc->platform_device);
453 if (result)
454 goto fail_platform_device;
455
456 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
457 &platform_attribute_group);
458 if (result)
459 goto fail_sysfs;
460 return 0;
461
462fail_sysfs:
463 platform_device_del(eeepc->platform_device);
464fail_platform_device:
465 platform_device_put(eeepc->platform_device);
466 return result;
467}
468
469static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
470{
471 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
472 &platform_attribute_group);
473 platform_device_unregister(eeepc->platform_device);
474}
475
476/*
477 * LEDs
478 */
479/*
480 * These functions actually update the LED's, and are called from a
481 * workqueue. By doing this as separate work rather than when the LED
482 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
483 * potentially bad time, such as a timer interrupt.
484 */
485static void tpd_led_update(struct work_struct *work)
486{
487 struct eeepc_laptop *eeepc;
488
489 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
490
491 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
492}
493
494static void tpd_led_set(struct led_classdev *led_cdev,
495 enum led_brightness value)
496{
497 struct eeepc_laptop *eeepc;
498
499 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
500
501 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
502 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
503}
504
505static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
506{
507 struct eeepc_laptop *eeepc;
508
509 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
510
511 return get_acpi(eeepc, CM_ASL_TPD);
512}
513
514static int eeepc_led_init(struct eeepc_laptop *eeepc)
515{
516 int rv;
517
518 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
519 return 0;
520
521 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
522 if (!eeepc->led_workqueue)
523 return -ENOMEM;
524 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
525
526 eeepc->tpd_led.name = "eeepc::touchpad";
527 eeepc->tpd_led.brightness_set = tpd_led_set;
528 if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
529 eeepc->tpd_led.brightness_get = tpd_led_get;
530 eeepc->tpd_led.max_brightness = 1;
531
532 rv = led_classdev_register(&eeepc->platform_device->dev,
533 &eeepc->tpd_led);
534 if (rv) {
535 destroy_workqueue(eeepc->led_workqueue);
536 return rv;
537 }
538
539 return 0;
540}
541
542static void eeepc_led_exit(struct eeepc_laptop *eeepc)
543{
544 led_classdev_unregister(&eeepc->tpd_led);
545 if (eeepc->led_workqueue)
546 destroy_workqueue(eeepc->led_workqueue);
547}
548
549/*
550 * PCI hotplug (for wlan rfkill)
551 */
552static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
553{
554 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
555 return false;
556 return true;
557}
558
559static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
560{
561 struct pci_dev *port;
562 struct pci_dev *dev;
563 struct pci_bus *bus;
564 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
565 bool absent;
566 u32 l;
567
568 if (eeepc->wlan_rfkill)
569 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
570
571 mutex_lock(&eeepc->hotplug_lock);
572 pci_lock_rescan_remove();
573
574 if (!eeepc->hotplug_slot.ops)
575 goto out_unlock;
576
577 port = acpi_get_pci_dev(handle);
578 if (!port) {
579 pr_warn("Unable to find port\n");
580 goto out_unlock;
581 }
582
583 bus = port->subordinate;
584
585 if (!bus) {
586 pr_warn("Unable to find PCI bus 1?\n");
587 goto out_put_dev;
588 }
589
590 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
591 pr_err("Unable to read PCI config space?\n");
592 goto out_put_dev;
593 }
594
595 absent = (l == 0xffffffff);
596
597 if (blocked != absent) {
598 pr_warn("BIOS says wireless lan is %s, but the pci device is %s\n",
599 blocked ? "blocked" : "unblocked",
600 absent ? "absent" : "present");
601 pr_warn("skipped wireless hotplug as probably inappropriate for this model\n");
602 goto out_put_dev;
603 }
604
605 if (!blocked) {
606 dev = pci_get_slot(bus, 0);
607 if (dev) {
608 /* Device already present */
609 pci_dev_put(dev);
610 goto out_put_dev;
611 }
612 dev = pci_scan_single_device(bus, 0);
613 if (dev) {
614 pci_bus_assign_resources(bus);
615 pci_bus_add_device(dev);
616 }
617 } else {
618 dev = pci_get_slot(bus, 0);
619 if (dev) {
620 pci_stop_and_remove_bus_device(dev);
621 pci_dev_put(dev);
622 }
623 }
624out_put_dev:
625 pci_dev_put(port);
626
627out_unlock:
628 pci_unlock_rescan_remove();
629 mutex_unlock(&eeepc->hotplug_lock);
630}
631
632static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
633{
634 acpi_status status = AE_OK;
635 acpi_handle handle;
636
637 status = acpi_get_handle(NULL, node, &handle);
638
639 if (ACPI_SUCCESS(status))
640 eeepc_rfkill_hotplug(eeepc, handle);
641}
642
643static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
644{
645 struct eeepc_laptop *eeepc = data;
646
647 if (event != ACPI_NOTIFY_BUS_CHECK)
648 return;
649
650 eeepc_rfkill_hotplug(eeepc, handle);
651}
652
653static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
654 char *node)
655{
656 acpi_status status;
657 acpi_handle handle;
658
659 status = acpi_get_handle(NULL, node, &handle);
660
661 if (ACPI_FAILURE(status))
662 return -ENODEV;
663
664 status = acpi_install_notify_handler(handle,
665 ACPI_SYSTEM_NOTIFY,
666 eeepc_rfkill_notify,
667 eeepc);
668 if (ACPI_FAILURE(status))
669 pr_warn("Failed to register notify on %s\n", node);
670
671 /*
672 * Refresh pci hotplug in case the rfkill state was
673 * changed during setup.
674 */
675 eeepc_rfkill_hotplug(eeepc, handle);
676 return 0;
677}
678
679static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
680 char *node)
681{
682 acpi_status status = AE_OK;
683 acpi_handle handle;
684
685 status = acpi_get_handle(NULL, node, &handle);
686
687 if (ACPI_FAILURE(status))
688 return;
689
690 status = acpi_remove_notify_handler(handle,
691 ACPI_SYSTEM_NOTIFY,
692 eeepc_rfkill_notify);
693 if (ACPI_FAILURE(status))
694 pr_err("Error removing rfkill notify handler %s\n",
695 node);
696 /*
697 * Refresh pci hotplug in case the rfkill
698 * state was changed after
699 * eeepc_unregister_rfkill_notifier()
700 */
701 eeepc_rfkill_hotplug(eeepc, handle);
702}
703
704static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
705 u8 *value)
706{
707 struct eeepc_laptop *eeepc;
708 int val;
709
710 eeepc = container_of(hotplug_slot, struct eeepc_laptop, hotplug_slot);
711 val = get_acpi(eeepc, CM_ASL_WLAN);
712
713 if (val == 1 || val == 0)
714 *value = val;
715 else
716 return -EINVAL;
717
718 return 0;
719}
720
721static const struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
722 .get_adapter_status = eeepc_get_adapter_status,
723 .get_power_status = eeepc_get_adapter_status,
724};
725
726static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
727{
728 int ret = -ENOMEM;
729 struct pci_bus *bus = pci_find_bus(0, 1);
730
731 if (!bus) {
732 pr_err("Unable to find wifi PCI bus\n");
733 return -ENODEV;
734 }
735
736 eeepc->hotplug_slot.ops = &eeepc_hotplug_slot_ops;
737
738 ret = pci_hp_register(&eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
739 if (ret) {
740 pr_err("Unable to register hotplug slot - %d\n", ret);
741 goto error_register;
742 }
743
744 return 0;
745
746error_register:
747 eeepc->hotplug_slot.ops = NULL;
748 return ret;
749}
750
751/*
752 * Rfkill devices
753 */
754static int eeepc_rfkill_set(void *data, bool blocked)
755{
756 acpi_handle handle = data;
757
758 return write_acpi_int(handle, NULL, !blocked);
759}
760
761static const struct rfkill_ops eeepc_rfkill_ops = {
762 .set_block = eeepc_rfkill_set,
763};
764
765static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
766 struct rfkill **rfkill,
767 const char *name,
768 enum rfkill_type type, int cm)
769{
770 acpi_handle handle;
771 int result;
772
773 result = acpi_setter_handle(eeepc, cm, &handle);
774 if (result < 0)
775 return result;
776
777 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
778 &eeepc_rfkill_ops, handle);
779
780 if (!*rfkill)
781 return -EINVAL;
782
783 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
784 result = rfkill_register(*rfkill);
785 if (result) {
786 rfkill_destroy(*rfkill);
787 *rfkill = NULL;
788 return result;
789 }
790 return 0;
791}
792
793static char EEEPC_RFKILL_NODE_1[] = "\\_SB.PCI0.P0P5";
794static char EEEPC_RFKILL_NODE_2[] = "\\_SB.PCI0.P0P6";
795static char EEEPC_RFKILL_NODE_3[] = "\\_SB.PCI0.P0P7";
796
797static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
798{
799 eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_1);
800 eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_2);
801 eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_3);
802 if (eeepc->wlan_rfkill) {
803 rfkill_unregister(eeepc->wlan_rfkill);
804 rfkill_destroy(eeepc->wlan_rfkill);
805 eeepc->wlan_rfkill = NULL;
806 }
807
808 if (eeepc->hotplug_slot.ops)
809 pci_hp_deregister(&eeepc->hotplug_slot);
810
811 if (eeepc->bluetooth_rfkill) {
812 rfkill_unregister(eeepc->bluetooth_rfkill);
813 rfkill_destroy(eeepc->bluetooth_rfkill);
814 eeepc->bluetooth_rfkill = NULL;
815 }
816 if (eeepc->wwan3g_rfkill) {
817 rfkill_unregister(eeepc->wwan3g_rfkill);
818 rfkill_destroy(eeepc->wwan3g_rfkill);
819 eeepc->wwan3g_rfkill = NULL;
820 }
821 if (eeepc->wimax_rfkill) {
822 rfkill_unregister(eeepc->wimax_rfkill);
823 rfkill_destroy(eeepc->wimax_rfkill);
824 eeepc->wimax_rfkill = NULL;
825 }
826}
827
828static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
829{
830 int result = 0;
831
832 mutex_init(&eeepc->hotplug_lock);
833
834 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
835 "eeepc-wlan", RFKILL_TYPE_WLAN,
836 CM_ASL_WLAN);
837
838 if (result && result != -ENODEV)
839 goto exit;
840
841 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
842 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
843 CM_ASL_BLUETOOTH);
844
845 if (result && result != -ENODEV)
846 goto exit;
847
848 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
849 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
850 CM_ASL_3G);
851
852 if (result && result != -ENODEV)
853 goto exit;
854
855 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
856 "eeepc-wimax", RFKILL_TYPE_WIMAX,
857 CM_ASL_WIMAX);
858
859 if (result && result != -ENODEV)
860 goto exit;
861
862 if (eeepc->hotplug_disabled)
863 return 0;
864
865 result = eeepc_setup_pci_hotplug(eeepc);
866 /*
867 * If we get -EBUSY then something else is handling the PCI hotplug -
868 * don't fail in this case
869 */
870 if (result == -EBUSY)
871 result = 0;
872
873 eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_1);
874 eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_2);
875 eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_3);
876
877exit:
878 if (result && result != -ENODEV)
879 eeepc_rfkill_exit(eeepc);
880 return result;
881}
882
883/*
884 * Platform driver - hibernate/resume callbacks
885 */
886static int eeepc_hotk_thaw(struct device *device)
887{
888 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
889
890 if (eeepc->wlan_rfkill) {
891 int wlan;
892
893 /*
894 * Work around bios bug - acpi _PTS turns off the wireless led
895 * during suspend. Normally it restores it on resume, but
896 * we should kick it ourselves in case hibernation is aborted.
897 */
898 wlan = get_acpi(eeepc, CM_ASL_WLAN);
899 if (wlan >= 0)
900 set_acpi(eeepc, CM_ASL_WLAN, wlan);
901 }
902
903 return 0;
904}
905
906static int eeepc_hotk_restore(struct device *device)
907{
908 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
909
910 /* Refresh both wlan rfkill state and pci hotplug */
911 if (eeepc->wlan_rfkill) {
912 eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_1);
913 eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_2);
914 eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_3);
915 }
916
917 if (eeepc->bluetooth_rfkill)
918 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
919 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
920 if (eeepc->wwan3g_rfkill)
921 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
922 get_acpi(eeepc, CM_ASL_3G) != 1);
923 if (eeepc->wimax_rfkill)
924 rfkill_set_sw_state(eeepc->wimax_rfkill,
925 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
926
927 return 0;
928}
929
930static const struct dev_pm_ops eeepc_pm_ops = {
931 .thaw = eeepc_hotk_thaw,
932 .restore = eeepc_hotk_restore,
933};
934
935static struct platform_driver platform_driver = {
936 .driver = {
937 .name = EEEPC_LAPTOP_FILE,
938 .pm = &eeepc_pm_ops,
939 }
940};
941
942/*
943 * Hwmon device
944 */
945
946#define EEEPC_EC_SC00 0x61
947#define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
948#define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
949#define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
950
951#define EEEPC_EC_SFB0 0xD0
952#define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
953
954static inline int eeepc_pwm_to_lmsensors(int value)
955{
956 return value * 255 / 100;
957}
958
959static inline int eeepc_lmsensors_to_pwm(int value)
960{
961 value = clamp_val(value, 0, 255);
962 return value * 100 / 255;
963}
964
965static int eeepc_get_fan_pwm(void)
966{
967 u8 value = 0;
968
969 ec_read(EEEPC_EC_FAN_PWM, &value);
970 return eeepc_pwm_to_lmsensors(value);
971}
972
973static void eeepc_set_fan_pwm(int value)
974{
975 value = eeepc_lmsensors_to_pwm(value);
976 ec_write(EEEPC_EC_FAN_PWM, value);
977}
978
979static int eeepc_get_fan_rpm(void)
980{
981 u8 high = 0;
982 u8 low = 0;
983
984 ec_read(EEEPC_EC_FAN_HRPM, &high);
985 ec_read(EEEPC_EC_FAN_LRPM, &low);
986 return high << 8 | low;
987}
988
989#define EEEPC_EC_FAN_CTRL_BIT 0x02
990#define EEEPC_FAN_CTRL_MANUAL 1
991#define EEEPC_FAN_CTRL_AUTO 2
992
993static int eeepc_get_fan_ctrl(void)
994{
995 u8 value = 0;
996
997 ec_read(EEEPC_EC_FAN_CTRL, &value);
998 if (value & EEEPC_EC_FAN_CTRL_BIT)
999 return EEEPC_FAN_CTRL_MANUAL;
1000 else
1001 return EEEPC_FAN_CTRL_AUTO;
1002}
1003
1004static void eeepc_set_fan_ctrl(int manual)
1005{
1006 u8 value = 0;
1007
1008 ec_read(EEEPC_EC_FAN_CTRL, &value);
1009 if (manual == EEEPC_FAN_CTRL_MANUAL)
1010 value |= EEEPC_EC_FAN_CTRL_BIT;
1011 else
1012 value &= ~EEEPC_EC_FAN_CTRL_BIT;
1013 ec_write(EEEPC_EC_FAN_CTRL, value);
1014}
1015
1016static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1017{
1018 int rv, value;
1019
1020 rv = parse_arg(buf, &value);
1021 if (rv < 0)
1022 return rv;
1023 set(value);
1024 return count;
1025}
1026
1027static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1028{
1029 return sprintf(buf, "%d\n", get());
1030}
1031
1032#define EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
1033 static ssize_t _name##_show(struct device *dev, \
1034 struct device_attribute *attr, \
1035 char *buf) \
1036 { \
1037 return show_sys_hwmon(_get, buf); \
1038 }
1039
1040#define EEEPC_SENSOR_STORE_FUNC(_name, _set) \
1041 static ssize_t _name##_store(struct device *dev, \
1042 struct device_attribute *attr, \
1043 const char *buf, size_t count) \
1044 { \
1045 return store_sys_hwmon(_set, buf, count); \
1046 }
1047
1048#define EEEPC_CREATE_SENSOR_ATTR_RW(_name, _get, _set) \
1049 EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
1050 EEEPC_SENSOR_STORE_FUNC(_name, _set) \
1051 static DEVICE_ATTR_RW(_name)
1052
1053#define EEEPC_CREATE_SENSOR_ATTR_RO(_name, _get) \
1054 EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
1055 static DEVICE_ATTR_RO(_name)
1056
1057EEEPC_CREATE_SENSOR_ATTR_RO(fan1_input, eeepc_get_fan_rpm);
1058EEEPC_CREATE_SENSOR_ATTR_RW(pwm1, eeepc_get_fan_pwm,
1059 eeepc_set_fan_pwm);
1060EEEPC_CREATE_SENSOR_ATTR_RW(pwm1_enable, eeepc_get_fan_ctrl,
1061 eeepc_set_fan_ctrl);
1062
1063static struct attribute *hwmon_attrs[] = {
1064 &dev_attr_pwm1.attr,
1065 &dev_attr_fan1_input.attr,
1066 &dev_attr_pwm1_enable.attr,
1067 NULL
1068};
1069ATTRIBUTE_GROUPS(hwmon);
1070
1071static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1072{
1073 struct device *dev = &eeepc->platform_device->dev;
1074 struct device *hwmon;
1075
1076 hwmon = devm_hwmon_device_register_with_groups(dev, "eeepc", NULL,
1077 hwmon_groups);
1078 if (IS_ERR(hwmon)) {
1079 pr_err("Could not register eeepc hwmon device\n");
1080 return PTR_ERR(hwmon);
1081 }
1082 return 0;
1083}
1084
1085/*
1086 * Backlight device
1087 */
1088static int read_brightness(struct backlight_device *bd)
1089{
1090 struct eeepc_laptop *eeepc = bl_get_data(bd);
1091
1092 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1093}
1094
1095static int set_brightness(struct backlight_device *bd, int value)
1096{
1097 struct eeepc_laptop *eeepc = bl_get_data(bd);
1098
1099 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1100}
1101
1102static int update_bl_status(struct backlight_device *bd)
1103{
1104 return set_brightness(bd, bd->props.brightness);
1105}
1106
1107static const struct backlight_ops eeepcbl_ops = {
1108 .get_brightness = read_brightness,
1109 .update_status = update_bl_status,
1110};
1111
1112static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1113{
1114 struct backlight_device *bd = eeepc->backlight_device;
1115 int old = bd->props.brightness;
1116
1117 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1118
1119 return old;
1120}
1121
1122static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1123{
1124 struct backlight_properties props;
1125 struct backlight_device *bd;
1126
1127 memset(&props, 0, sizeof(struct backlight_properties));
1128 props.type = BACKLIGHT_PLATFORM;
1129 props.max_brightness = 15;
1130 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1131 &eeepc->platform_device->dev, eeepc,
1132 &eeepcbl_ops, &props);
1133 if (IS_ERR(bd)) {
1134 pr_err("Could not register eeepc backlight device\n");
1135 eeepc->backlight_device = NULL;
1136 return PTR_ERR(bd);
1137 }
1138 eeepc->backlight_device = bd;
1139 bd->props.brightness = read_brightness(bd);
1140 bd->props.power = FB_BLANK_UNBLANK;
1141 backlight_update_status(bd);
1142 return 0;
1143}
1144
1145static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1146{
1147 backlight_device_unregister(eeepc->backlight_device);
1148 eeepc->backlight_device = NULL;
1149}
1150
1151
1152/*
1153 * Input device (i.e. hotkeys)
1154 */
1155static int eeepc_input_init(struct eeepc_laptop *eeepc)
1156{
1157 struct input_dev *input;
1158 int error;
1159
1160 input = input_allocate_device();
1161 if (!input)
1162 return -ENOMEM;
1163
1164 input->name = "Asus EeePC extra buttons";
1165 input->phys = EEEPC_LAPTOP_FILE "/input0";
1166 input->id.bustype = BUS_HOST;
1167 input->dev.parent = &eeepc->platform_device->dev;
1168
1169 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1170 if (error) {
1171 pr_err("Unable to setup input device keymap\n");
1172 goto err_free_dev;
1173 }
1174
1175 error = input_register_device(input);
1176 if (error) {
1177 pr_err("Unable to register input device\n");
1178 goto err_free_dev;
1179 }
1180
1181 eeepc->inputdev = input;
1182 return 0;
1183
1184err_free_dev:
1185 input_free_device(input);
1186 return error;
1187}
1188
1189static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1190{
1191 if (eeepc->inputdev)
1192 input_unregister_device(eeepc->inputdev);
1193 eeepc->inputdev = NULL;
1194}
1195
1196/*
1197 * ACPI driver
1198 */
1199static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
1200{
1201 if (!eeepc->inputdev)
1202 return;
1203 if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
1204 pr_info("Unknown key %x pressed\n", event);
1205}
1206
1207static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1208{
1209 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1210 int old_brightness, new_brightness;
1211 u16 count;
1212
1213 if (event > ACPI_MAX_SYS_NOTIFY)
1214 return;
1215 count = eeepc->event_count[event % 128]++;
1216 acpi_bus_generate_netlink_event(device->pnp.device_class,
1217 dev_name(&device->dev), event,
1218 count);
1219
1220 /* Brightness events are special */
1221 if (event < NOTIFY_BRN_MIN || event > NOTIFY_BRN_MAX) {
1222 eeepc_input_notify(eeepc, event);
1223 return;
1224 }
1225
1226 /* Ignore them completely if the acpi video driver is used */
1227 if (!eeepc->backlight_device)
1228 return;
1229
1230 /* Update the backlight device. */
1231 old_brightness = eeepc_backlight_notify(eeepc);
1232
1233 /* Convert event to keypress (obsolescent hack) */
1234 new_brightness = event - NOTIFY_BRN_MIN;
1235
1236 if (new_brightness < old_brightness) {
1237 event = NOTIFY_BRN_MIN; /* brightness down */
1238 } else if (new_brightness > old_brightness) {
1239 event = NOTIFY_BRN_MAX; /* brightness up */
1240 } else {
1241 /*
1242 * no change in brightness - already at min/max,
1243 * event will be desired value (or else ignored)
1244 */
1245 }
1246 eeepc_input_notify(eeepc, event);
1247}
1248
1249static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1250{
1251 const char *model;
1252
1253 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1254 if (!model)
1255 return;
1256
1257 /*
1258 * Blacklist for setting cpufv (cpu speed).
1259 *
1260 * EeePC 4G ("701") implements CFVS, but it is not supported
1261 * by the pre-installed OS, and the original option to change it
1262 * in the BIOS setup screen was removed in later versions.
1263 *
1264 * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
1265 * this applies to all "701" models (4G/4G Surf/2G Surf).
1266 *
1267 * So Asus made a deliberate decision not to support it on this model.
1268 * We have several reports that using it can cause the system to hang
1269 *
1270 * The hang has also been reported on a "702" (Model name "8G"?).
1271 *
1272 * We avoid dmi_check_system() / dmi_match(), because they use
1273 * substring matching. We don't want to affect the "701SD"
1274 * and "701SDX" models, because they do support S.H.E.
1275 */
1276 if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
1277 eeepc->cpufv_disabled = true;
1278 pr_info("model %s does not officially support setting cpu speed\n",
1279 model);
1280 pr_info("cpufv disabled to avoid instability\n");
1281 }
1282
1283 /*
1284 * Blacklist for wlan hotplug
1285 *
1286 * Eeepc 1005HA doesn't work like others models and don't need the
1287 * hotplug code. In fact, current hotplug code seems to unplug another
1288 * device...
1289 */
1290 if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
1291 strcmp(model, "1005PE") == 0) {
1292 eeepc->hotplug_disabled = true;
1293 pr_info("wlan hotplug disabled\n");
1294 }
1295}
1296
1297static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1298{
1299 int dummy;
1300
1301 /* Some BIOSes do not report cm although it is available.
1302 Check if cm_getv[cm] works and, if yes, assume cm should be set. */
1303 if (!(eeepc->cm_supported & (1 << cm))
1304 && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
1305 pr_info("%s (%x) not reported by BIOS, enabling anyway\n",
1306 name, 1 << cm);
1307 eeepc->cm_supported |= 1 << cm;
1308 }
1309}
1310
1311static void cmsg_quirks(struct eeepc_laptop *eeepc)
1312{
1313 cmsg_quirk(eeepc, CM_ASL_LID, "LID");
1314 cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
1315 cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
1316 cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
1317}
1318
1319static int eeepc_acpi_init(struct eeepc_laptop *eeepc)
1320{
1321 unsigned int init_flags;
1322 int result;
1323
1324 result = acpi_bus_get_status(eeepc->device);
1325 if (result)
1326 return result;
1327 if (!eeepc->device->status.present) {
1328 pr_err("Hotkey device not present, aborting\n");
1329 return -ENODEV;
1330 }
1331
1332 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1333 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1334
1335 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1336 pr_err("Hotkey initialization failed\n");
1337 return -ENODEV;
1338 }
1339
1340 /* get control methods supported */
1341 if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
1342 pr_err("Get control methods supported failed\n");
1343 return -ENODEV;
1344 }
1345 cmsg_quirks(eeepc);
1346 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1347
1348 return 0;
1349}
1350
1351static void eeepc_enable_camera(struct eeepc_laptop *eeepc)
1352{
1353 /*
1354 * If the following call to set_acpi() fails, it's because there's no
1355 * camera so we can ignore the error.
1356 */
1357 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1358 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1359}
1360
1361static bool eeepc_device_present;
1362
1363static int eeepc_acpi_add(struct acpi_device *device)
1364{
1365 struct eeepc_laptop *eeepc;
1366 int result;
1367
1368 pr_notice(EEEPC_LAPTOP_NAME "\n");
1369 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1370 if (!eeepc)
1371 return -ENOMEM;
1372 eeepc->handle = device->handle;
1373 strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
1374 strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
1375 device->driver_data = eeepc;
1376 eeepc->device = device;
1377
1378 eeepc->hotplug_disabled = hotplug_disabled;
1379
1380 eeepc_dmi_check(eeepc);
1381
1382 result = eeepc_acpi_init(eeepc);
1383 if (result)
1384 goto fail_platform;
1385 eeepc_enable_camera(eeepc);
1386
1387 /*
1388 * Register the platform device first. It is used as a parent for the
1389 * sub-devices below.
1390 *
1391 * Note that if there are multiple instances of this ACPI device it
1392 * will bail out, because the platform device is registered with a
1393 * fixed name. Of course it doesn't make sense to have more than one,
1394 * and machine-specific scripts find the fixed name convenient. But
1395 * It's also good for us to exclude multiple instances because both
1396 * our hwmon and our wlan rfkill subdevice use global ACPI objects
1397 * (the EC and the wlan PCI slot respectively).
1398 */
1399 result = eeepc_platform_init(eeepc);
1400 if (result)
1401 goto fail_platform;
1402
1403 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1404 result = eeepc_backlight_init(eeepc);
1405 if (result)
1406 goto fail_backlight;
1407 }
1408
1409 result = eeepc_input_init(eeepc);
1410 if (result)
1411 goto fail_input;
1412
1413 result = eeepc_hwmon_init(eeepc);
1414 if (result)
1415 goto fail_hwmon;
1416
1417 result = eeepc_led_init(eeepc);
1418 if (result)
1419 goto fail_led;
1420
1421 result = eeepc_rfkill_init(eeepc);
1422 if (result)
1423 goto fail_rfkill;
1424
1425 eeepc_device_present = true;
1426 return 0;
1427
1428fail_rfkill:
1429 eeepc_led_exit(eeepc);
1430fail_led:
1431fail_hwmon:
1432 eeepc_input_exit(eeepc);
1433fail_input:
1434 eeepc_backlight_exit(eeepc);
1435fail_backlight:
1436 eeepc_platform_exit(eeepc);
1437fail_platform:
1438 kfree(eeepc);
1439
1440 return result;
1441}
1442
1443static void eeepc_acpi_remove(struct acpi_device *device)
1444{
1445 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1446
1447 eeepc_backlight_exit(eeepc);
1448 eeepc_rfkill_exit(eeepc);
1449 eeepc_input_exit(eeepc);
1450 eeepc_led_exit(eeepc);
1451 eeepc_platform_exit(eeepc);
1452
1453 kfree(eeepc);
1454}
1455
1456
1457static const struct acpi_device_id eeepc_device_ids[] = {
1458 {EEEPC_ACPI_HID, 0},
1459 {"", 0},
1460};
1461MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1462
1463static struct acpi_driver eeepc_acpi_driver = {
1464 .name = EEEPC_LAPTOP_NAME,
1465 .class = EEEPC_ACPI_CLASS,
1466 .owner = THIS_MODULE,
1467 .ids = eeepc_device_ids,
1468 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1469 .ops = {
1470 .add = eeepc_acpi_add,
1471 .remove = eeepc_acpi_remove,
1472 .notify = eeepc_acpi_notify,
1473 },
1474};
1475
1476
1477static int __init eeepc_laptop_init(void)
1478{
1479 int result;
1480
1481 result = platform_driver_register(&platform_driver);
1482 if (result < 0)
1483 return result;
1484
1485 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1486 if (result < 0)
1487 goto fail_acpi_driver;
1488
1489 if (!eeepc_device_present) {
1490 result = -ENODEV;
1491 goto fail_no_device;
1492 }
1493
1494 return 0;
1495
1496fail_no_device:
1497 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1498fail_acpi_driver:
1499 platform_driver_unregister(&platform_driver);
1500 return result;
1501}
1502
1503static void __exit eeepc_laptop_exit(void)
1504{
1505 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1506 platform_driver_unregister(&platform_driver);
1507}
1508
1509module_init(eeepc_laptop_init);
1510module_exit(eeepc_laptop_exit);
1/*
2 * eeepc-laptop.c - Asus Eee PC extras
3 *
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
7 *
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.
12 *
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.
17 */
18
19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
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>
27#include <linux/fb.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>
41
42#define EEEPC_LAPTOP_VERSION "0.1"
43#define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver"
44#define EEEPC_LAPTOP_FILE "eeepc"
45
46#define EEEPC_ACPI_CLASS "hotkey"
47#define EEEPC_ACPI_DEVICE_NAME "Hotkey"
48#define EEEPC_ACPI_HID "ASUS010"
49
50MODULE_AUTHOR("Corentin Chary, Eric Cooper");
51MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
52MODULE_LICENSE("GPL");
53
54static bool hotplug_disabled;
55
56module_param(hotplug_disabled, bool, 0444);
57MODULE_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.");
61
62/*
63 * Definitions for Asus EeePC
64 */
65#define NOTIFY_BRN_MIN 0x20
66#define NOTIFY_BRN_MAX 0x2f
67
68enum {
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
81};
82
83enum {
84 CM_ASL_WLAN = 0,
85 CM_ASL_BLUETOOTH,
86 CM_ASL_IRDA,
87 CM_ASL_1394,
88 CM_ASL_CAMERA,
89 CM_ASL_TV,
90 CM_ASL_GPS,
91 CM_ASL_DVDROM,
92 CM_ASL_DISPLAYSWITCH,
93 CM_ASL_PANELBRIGHT,
94 CM_ASL_BIOSFLASH,
95 CM_ASL_ACPIFLASH,
96 CM_ASL_CPUFV,
97 CM_ASL_CPUTEMPERATURE,
98 CM_ASL_FANCPU,
99 CM_ASL_FANCHASSIS,
100 CM_ASL_USBPORT1,
101 CM_ASL_USBPORT2,
102 CM_ASL_USBPORT3,
103 CM_ASL_MODEM,
104 CM_ASL_CARDREADER,
105 CM_ASL_3G,
106 CM_ASL_WIMAX,
107 CM_ASL_HWCF,
108 CM_ASL_LID,
109 CM_ASL_TYPE,
110 CM_ASL_PANELPOWER, /*P901*/
111 CM_ASL_TPD
112};
113
114static 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"
122};
123
124static 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"
132};
133
134static 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 } },
153 { KE_END, 0 },
154};
155
156/*
157 * This is the main structure, we can use it to store useful information
158 */
159struct eeepc_laptop {
160 acpi_handle handle; /* the handle of the acpi device */
161 u32 cm_supported; /* the control methods supported
162 by this BIOS */
163 bool cpufv_disabled;
164 bool hotplug_disabled;
165 u16 event_count[128]; /* count for each event */
166
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;
171
172 struct input_dev *inputdev;
173
174 struct rfkill *wlan_rfkill;
175 struct rfkill *bluetooth_rfkill;
176 struct rfkill *wwan3g_rfkill;
177 struct rfkill *wimax_rfkill;
178
179 struct hotplug_slot *hotplug_slot;
180 struct mutex hotplug_lock;
181
182 struct led_classdev tpd_led;
183 int tpd_led_wk;
184 struct workqueue_struct *led_workqueue;
185 struct work_struct tpd_led_work;
186};
187
188/*
189 * ACPI Helpers
190 */
191static int write_acpi_int(acpi_handle handle, const char *method, int val)
192{
193 struct acpi_object_list params;
194 union acpi_object in_obj;
195 acpi_status status;
196
197 params.count = 1;
198 params.pointer = &in_obj;
199 in_obj.type = ACPI_TYPE_INTEGER;
200 in_obj.integer.value = val;
201
202 status = acpi_evaluate_object(handle, (char *)method, ¶ms, NULL);
203 return (status == AE_OK ? 0 : -1);
204}
205
206static int read_acpi_int(acpi_handle handle, const char *method, int *val)
207{
208 acpi_status status;
209 unsigned long long result;
210
211 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
212 if (ACPI_FAILURE(status)) {
213 *val = -1;
214 return -1;
215 } else {
216 *val = result;
217 return 0;
218 }
219}
220
221static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value)
222{
223 const char *method = cm_setv[cm];
224
225 if (method == NULL)
226 return -ENODEV;
227 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
228 return -ENODEV;
229
230 if (write_acpi_int(eeepc->handle, method, value))
231 pr_warn("Error writing %s\n", method);
232 return 0;
233}
234
235static int get_acpi(struct eeepc_laptop *eeepc, int cm)
236{
237 const char *method = cm_getv[cm];
238 int value;
239
240 if (method == NULL)
241 return -ENODEV;
242 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
243 return -ENODEV;
244
245 if (read_acpi_int(eeepc->handle, method, &value))
246 pr_warn("Error reading %s\n", method);
247 return value;
248}
249
250static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
251 acpi_handle *handle)
252{
253 const char *method = cm_setv[cm];
254 acpi_status status;
255
256 if (method == NULL)
257 return -ENODEV;
258 if ((eeepc->cm_supported & (0x1 << cm)) == 0)
259 return -ENODEV;
260
261 status = acpi_get_handle(eeepc->handle, (char *)method,
262 handle);
263 if (status != AE_OK) {
264 pr_warn("Error finding %s\n", method);
265 return -ENODEV;
266 }
267 return 0;
268}
269
270
271/*
272 * Sys helpers
273 */
274static int parse_arg(const char *buf, unsigned long count, int *val)
275{
276 if (!count)
277 return 0;
278 if (sscanf(buf, "%i", val) != 1)
279 return -EINVAL;
280 return count;
281}
282
283static ssize_t store_sys_acpi(struct device *dev, int cm,
284 const char *buf, size_t count)
285{
286 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
287 int rv, value;
288
289 rv = parse_arg(buf, count, &value);
290 if (rv > 0)
291 value = set_acpi(eeepc, cm, value);
292 if (value < 0)
293 return -EIO;
294 return rv;
295}
296
297static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
298{
299 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
300 int value = get_acpi(eeepc, cm);
301
302 if (value < 0)
303 return -EIO;
304 return sprintf(buf, "%d\n", value);
305}
306
307#define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
308 static ssize_t show_##_name(struct device *dev, \
309 struct device_attribute *attr, \
310 char *buf) \
311 { \
312 return show_sys_acpi(dev, _cm, buf); \
313 } \
314 static ssize_t store_##_name(struct device *dev, \
315 struct device_attribute *attr, \
316 const char *buf, size_t count) \
317 { \
318 return store_sys_acpi(dev, _cm, buf, count); \
319 } \
320 static struct device_attribute dev_attr_##_name = { \
321 .attr = { \
322 .name = __stringify(_name), \
323 .mode = _mode }, \
324 .show = show_##_name, \
325 .store = store_##_name, \
326 }
327
328EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
329EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
330EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
331
332struct eeepc_cpufv {
333 int num;
334 int cur;
335};
336
337static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c)
338{
339 c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
340 c->num = (c->cur >> 8) & 0xff;
341 c->cur &= 0xff;
342 if (c->cur < 0 || c->num <= 0 || c->num > 12)
343 return -ENODEV;
344 return 0;
345}
346
347static ssize_t show_available_cpufv(struct device *dev,
348 struct device_attribute *attr,
349 char *buf)
350{
351 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
352 struct eeepc_cpufv c;
353 int i;
354 ssize_t len = 0;
355
356 if (get_cpufv(eeepc, &c))
357 return -ENODEV;
358 for (i = 0; i < c.num; i++)
359 len += sprintf(buf + len, "%d ", i);
360 len += sprintf(buf + len, "\n");
361 return len;
362}
363
364static ssize_t show_cpufv(struct device *dev,
365 struct device_attribute *attr,
366 char *buf)
367{
368 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
369 struct eeepc_cpufv c;
370
371 if (get_cpufv(eeepc, &c))
372 return -ENODEV;
373 return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
374}
375
376static ssize_t store_cpufv(struct device *dev,
377 struct device_attribute *attr,
378 const char *buf, size_t count)
379{
380 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
381 struct eeepc_cpufv c;
382 int rv, value;
383
384 if (eeepc->cpufv_disabled)
385 return -EPERM;
386 if (get_cpufv(eeepc, &c))
387 return -ENODEV;
388 rv = parse_arg(buf, count, &value);
389 if (rv < 0)
390 return rv;
391 if (!rv || value < 0 || value >= c.num)
392 return -EINVAL;
393 set_acpi(eeepc, CM_ASL_CPUFV, value);
394 return rv;
395}
396
397static ssize_t show_cpufv_disabled(struct device *dev,
398 struct device_attribute *attr,
399 char *buf)
400{
401 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
402
403 return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
404}
405
406static ssize_t store_cpufv_disabled(struct device *dev,
407 struct device_attribute *attr,
408 const char *buf, size_t count)
409{
410 struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
411 int rv, value;
412
413 rv = parse_arg(buf, count, &value);
414 if (rv < 0)
415 return rv;
416
417 switch (value) {
418 case 0:
419 if (eeepc->cpufv_disabled)
420 pr_warn("cpufv enabled (not officially supported "
421 "on this model)\n");
422 eeepc->cpufv_disabled = false;
423 return rv;
424 case 1:
425 return -EPERM;
426 default:
427 return -EINVAL;
428 }
429}
430
431
432static struct device_attribute dev_attr_cpufv = {
433 .attr = {
434 .name = "cpufv",
435 .mode = 0644 },
436 .show = show_cpufv,
437 .store = store_cpufv
438};
439
440static struct device_attribute dev_attr_available_cpufv = {
441 .attr = {
442 .name = "available_cpufv",
443 .mode = 0444 },
444 .show = show_available_cpufv
445};
446
447static struct device_attribute dev_attr_cpufv_disabled = {
448 .attr = {
449 .name = "cpufv_disabled",
450 .mode = 0644 },
451 .show = show_cpufv_disabled,
452 .store = store_cpufv_disabled
453};
454
455
456static struct attribute *platform_attributes[] = {
457 &dev_attr_camera.attr,
458 &dev_attr_cardr.attr,
459 &dev_attr_disp.attr,
460 &dev_attr_cpufv.attr,
461 &dev_attr_available_cpufv.attr,
462 &dev_attr_cpufv_disabled.attr,
463 NULL
464};
465
466static struct attribute_group platform_attribute_group = {
467 .attrs = platform_attributes
468};
469
470static int eeepc_platform_init(struct eeepc_laptop *eeepc)
471{
472 int result;
473
474 eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
475 if (!eeepc->platform_device)
476 return -ENOMEM;
477 platform_set_drvdata(eeepc->platform_device, eeepc);
478
479 result = platform_device_add(eeepc->platform_device);
480 if (result)
481 goto fail_platform_device;
482
483 result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
484 &platform_attribute_group);
485 if (result)
486 goto fail_sysfs;
487 return 0;
488
489fail_sysfs:
490 platform_device_del(eeepc->platform_device);
491fail_platform_device:
492 platform_device_put(eeepc->platform_device);
493 return result;
494}
495
496static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
497{
498 sysfs_remove_group(&eeepc->platform_device->dev.kobj,
499 &platform_attribute_group);
500 platform_device_unregister(eeepc->platform_device);
501}
502
503/*
504 * LEDs
505 */
506/*
507 * These functions actually update the LED's, and are called from a
508 * workqueue. By doing this as separate work rather than when the LED
509 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
510 * potentially bad time, such as a timer interrupt.
511 */
512static void tpd_led_update(struct work_struct *work)
513 {
514 struct eeepc_laptop *eeepc;
515
516 eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
517
518 set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
519}
520
521static void tpd_led_set(struct led_classdev *led_cdev,
522 enum led_brightness value)
523{
524 struct eeepc_laptop *eeepc;
525
526 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
527
528 eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
529 queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
530}
531
532static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
533{
534 struct eeepc_laptop *eeepc;
535
536 eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
537
538 return get_acpi(eeepc, CM_ASL_TPD);
539}
540
541static int eeepc_led_init(struct eeepc_laptop *eeepc)
542{
543 int rv;
544
545 if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
546 return 0;
547
548 eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
549 if (!eeepc->led_workqueue)
550 return -ENOMEM;
551 INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
552
553 eeepc->tpd_led.name = "eeepc::touchpad";
554 eeepc->tpd_led.brightness_set = tpd_led_set;
555 if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
556 eeepc->tpd_led.brightness_get = tpd_led_get;
557 eeepc->tpd_led.max_brightness = 1;
558
559 rv = led_classdev_register(&eeepc->platform_device->dev,
560 &eeepc->tpd_led);
561 if (rv) {
562 destroy_workqueue(eeepc->led_workqueue);
563 return rv;
564 }
565
566 return 0;
567}
568
569static void eeepc_led_exit(struct eeepc_laptop *eeepc)
570{
571 if (eeepc->tpd_led.dev)
572 led_classdev_unregister(&eeepc->tpd_led);
573 if (eeepc->led_workqueue)
574 destroy_workqueue(eeepc->led_workqueue);
575}
576
577
578/*
579 * PCI hotplug (for wlan rfkill)
580 */
581static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
582{
583 if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
584 return false;
585 return true;
586}
587
588static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
589{
590 struct pci_dev *port;
591 struct pci_dev *dev;
592 struct pci_bus *bus;
593 bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
594 bool absent;
595 u32 l;
596
597 if (eeepc->wlan_rfkill)
598 rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
599
600 mutex_lock(&eeepc->hotplug_lock);
601
602 if (eeepc->hotplug_slot) {
603 port = acpi_get_pci_dev(handle);
604 if (!port) {
605 pr_warning("Unable to find port\n");
606 goto out_unlock;
607 }
608
609 bus = port->subordinate;
610
611 if (!bus) {
612 pr_warn("Unable to find PCI bus 1?\n");
613 goto out_unlock;
614 }
615
616 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
617 pr_err("Unable to read PCI config space?\n");
618 goto out_unlock;
619 }
620
621 absent = (l == 0xffffffff);
622
623 if (blocked != absent) {
624 pr_warn("BIOS says wireless lan is %s, "
625 "but the pci device is %s\n",
626 blocked ? "blocked" : "unblocked",
627 absent ? "absent" : "present");
628 pr_warn("skipped wireless hotplug as probably "
629 "inappropriate for this model\n");
630 goto out_unlock;
631 }
632
633 if (!blocked) {
634 dev = pci_get_slot(bus, 0);
635 if (dev) {
636 /* Device already present */
637 pci_dev_put(dev);
638 goto out_unlock;
639 }
640 dev = pci_scan_single_device(bus, 0);
641 if (dev) {
642 pci_bus_assign_resources(bus);
643 if (pci_bus_add_device(dev))
644 pr_err("Unable to hotplug wifi\n");
645 }
646 } else {
647 dev = pci_get_slot(bus, 0);
648 if (dev) {
649 pci_remove_bus_device(dev);
650 pci_dev_put(dev);
651 }
652 }
653 }
654
655out_unlock:
656 mutex_unlock(&eeepc->hotplug_lock);
657}
658
659static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
660{
661 acpi_status status = AE_OK;
662 acpi_handle handle;
663
664 status = acpi_get_handle(NULL, node, &handle);
665
666 if (ACPI_SUCCESS(status))
667 eeepc_rfkill_hotplug(eeepc, handle);
668}
669
670static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
671{
672 struct eeepc_laptop *eeepc = data;
673
674 if (event != ACPI_NOTIFY_BUS_CHECK)
675 return;
676
677 eeepc_rfkill_hotplug(eeepc, handle);
678}
679
680static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
681 char *node)
682{
683 acpi_status status;
684 acpi_handle handle;
685
686 status = acpi_get_handle(NULL, node, &handle);
687
688 if (ACPI_SUCCESS(status)) {
689 status = acpi_install_notify_handler(handle,
690 ACPI_SYSTEM_NOTIFY,
691 eeepc_rfkill_notify,
692 eeepc);
693 if (ACPI_FAILURE(status))
694 pr_warn("Failed to register notify on %s\n", node);
695
696 /*
697 * Refresh pci hotplug in case the rfkill state was
698 * changed during setup.
699 */
700 eeepc_rfkill_hotplug(eeepc, handle);
701 } else
702 return -ENODEV;
703
704 return 0;
705}
706
707static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
708 char *node)
709{
710 acpi_status status = AE_OK;
711 acpi_handle handle;
712
713 status = acpi_get_handle(NULL, node, &handle);
714
715 if (ACPI_SUCCESS(status)) {
716 status = acpi_remove_notify_handler(handle,
717 ACPI_SYSTEM_NOTIFY,
718 eeepc_rfkill_notify);
719 if (ACPI_FAILURE(status))
720 pr_err("Error removing rfkill notify handler %s\n",
721 node);
722 /*
723 * Refresh pci hotplug in case the rfkill
724 * state was changed after
725 * eeepc_unregister_rfkill_notifier()
726 */
727 eeepc_rfkill_hotplug(eeepc, handle);
728 }
729}
730
731static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
732 u8 *value)
733{
734 struct eeepc_laptop *eeepc = hotplug_slot->private;
735 int val = get_acpi(eeepc, CM_ASL_WLAN);
736
737 if (val == 1 || val == 0)
738 *value = val;
739 else
740 return -EINVAL;
741
742 return 0;
743}
744
745static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
746{
747 kfree(hotplug_slot->info);
748 kfree(hotplug_slot);
749}
750
751static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
752 .owner = THIS_MODULE,
753 .get_adapter_status = eeepc_get_adapter_status,
754 .get_power_status = eeepc_get_adapter_status,
755};
756
757static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
758{
759 int ret = -ENOMEM;
760 struct pci_bus *bus = pci_find_bus(0, 1);
761
762 if (!bus) {
763 pr_err("Unable to find wifi PCI bus\n");
764 return -ENODEV;
765 }
766
767 eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
768 if (!eeepc->hotplug_slot)
769 goto error_slot;
770
771 eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
772 GFP_KERNEL);
773 if (!eeepc->hotplug_slot->info)
774 goto error_info;
775
776 eeepc->hotplug_slot->private = eeepc;
777 eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
778 eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
779 eeepc_get_adapter_status(eeepc->hotplug_slot,
780 &eeepc->hotplug_slot->info->adapter_status);
781
782 ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi");
783 if (ret) {
784 pr_err("Unable to register hotplug slot - %d\n", ret);
785 goto error_register;
786 }
787
788 return 0;
789
790error_register:
791 kfree(eeepc->hotplug_slot->info);
792error_info:
793 kfree(eeepc->hotplug_slot);
794 eeepc->hotplug_slot = NULL;
795error_slot:
796 return ret;
797}
798
799/*
800 * Rfkill devices
801 */
802static int eeepc_rfkill_set(void *data, bool blocked)
803{
804 acpi_handle handle = data;
805
806 return write_acpi_int(handle, NULL, !blocked);
807}
808
809static const struct rfkill_ops eeepc_rfkill_ops = {
810 .set_block = eeepc_rfkill_set,
811};
812
813static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
814 struct rfkill **rfkill,
815 const char *name,
816 enum rfkill_type type, int cm)
817{
818 acpi_handle handle;
819 int result;
820
821 result = acpi_setter_handle(eeepc, cm, &handle);
822 if (result < 0)
823 return result;
824
825 *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
826 &eeepc_rfkill_ops, handle);
827
828 if (!*rfkill)
829 return -EINVAL;
830
831 rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
832 result = rfkill_register(*rfkill);
833 if (result) {
834 rfkill_destroy(*rfkill);
835 *rfkill = NULL;
836 return result;
837 }
838 return 0;
839}
840
841static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
842{
843 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
844 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
845 eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
846 if (eeepc->wlan_rfkill) {
847 rfkill_unregister(eeepc->wlan_rfkill);
848 rfkill_destroy(eeepc->wlan_rfkill);
849 eeepc->wlan_rfkill = NULL;
850 }
851
852 if (eeepc->hotplug_slot)
853 pci_hp_deregister(eeepc->hotplug_slot);
854
855 if (eeepc->bluetooth_rfkill) {
856 rfkill_unregister(eeepc->bluetooth_rfkill);
857 rfkill_destroy(eeepc->bluetooth_rfkill);
858 eeepc->bluetooth_rfkill = NULL;
859 }
860 if (eeepc->wwan3g_rfkill) {
861 rfkill_unregister(eeepc->wwan3g_rfkill);
862 rfkill_destroy(eeepc->wwan3g_rfkill);
863 eeepc->wwan3g_rfkill = NULL;
864 }
865 if (eeepc->wimax_rfkill) {
866 rfkill_unregister(eeepc->wimax_rfkill);
867 rfkill_destroy(eeepc->wimax_rfkill);
868 eeepc->wimax_rfkill = NULL;
869 }
870}
871
872static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
873{
874 int result = 0;
875
876 mutex_init(&eeepc->hotplug_lock);
877
878 result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
879 "eeepc-wlan", RFKILL_TYPE_WLAN,
880 CM_ASL_WLAN);
881
882 if (result && result != -ENODEV)
883 goto exit;
884
885 result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
886 "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
887 CM_ASL_BLUETOOTH);
888
889 if (result && result != -ENODEV)
890 goto exit;
891
892 result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
893 "eeepc-wwan3g", RFKILL_TYPE_WWAN,
894 CM_ASL_3G);
895
896 if (result && result != -ENODEV)
897 goto exit;
898
899 result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
900 "eeepc-wimax", RFKILL_TYPE_WIMAX,
901 CM_ASL_WIMAX);
902
903 if (result && result != -ENODEV)
904 goto exit;
905
906 if (eeepc->hotplug_disabled)
907 return 0;
908
909 result = eeepc_setup_pci_hotplug(eeepc);
910 /*
911 * If we get -EBUSY then something else is handling the PCI hotplug -
912 * don't fail in this case
913 */
914 if (result == -EBUSY)
915 result = 0;
916
917 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5");
918 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6");
919 eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7");
920
921exit:
922 if (result && result != -ENODEV)
923 eeepc_rfkill_exit(eeepc);
924 return result;
925}
926
927/*
928 * Platform driver - hibernate/resume callbacks
929 */
930static int eeepc_hotk_thaw(struct device *device)
931{
932 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
933
934 if (eeepc->wlan_rfkill) {
935 bool wlan;
936
937 /*
938 * Work around bios bug - acpi _PTS turns off the wireless led
939 * during suspend. Normally it restores it on resume, but
940 * we should kick it ourselves in case hibernation is aborted.
941 */
942 wlan = get_acpi(eeepc, CM_ASL_WLAN);
943 set_acpi(eeepc, CM_ASL_WLAN, wlan);
944 }
945
946 return 0;
947}
948
949static int eeepc_hotk_restore(struct device *device)
950{
951 struct eeepc_laptop *eeepc = dev_get_drvdata(device);
952
953 /* Refresh both wlan rfkill state and pci hotplug */
954 if (eeepc->wlan_rfkill) {
955 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P5");
956 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P6");
957 eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P7");
958 }
959
960 if (eeepc->bluetooth_rfkill)
961 rfkill_set_sw_state(eeepc->bluetooth_rfkill,
962 get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
963 if (eeepc->wwan3g_rfkill)
964 rfkill_set_sw_state(eeepc->wwan3g_rfkill,
965 get_acpi(eeepc, CM_ASL_3G) != 1);
966 if (eeepc->wimax_rfkill)
967 rfkill_set_sw_state(eeepc->wimax_rfkill,
968 get_acpi(eeepc, CM_ASL_WIMAX) != 1);
969
970 return 0;
971}
972
973static const struct dev_pm_ops eeepc_pm_ops = {
974 .thaw = eeepc_hotk_thaw,
975 .restore = eeepc_hotk_restore,
976};
977
978static struct platform_driver platform_driver = {
979 .driver = {
980 .name = EEEPC_LAPTOP_FILE,
981 .owner = THIS_MODULE,
982 .pm = &eeepc_pm_ops,
983 }
984};
985
986/*
987 * Hwmon device
988 */
989
990#define EEEPC_EC_SC00 0x61
991#define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
992#define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
993#define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
994
995#define EEEPC_EC_SFB0 0xD0
996#define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
997
998static int eeepc_get_fan_pwm(void)
999{
1000 u8 value = 0;
1001
1002 ec_read(EEEPC_EC_FAN_PWM, &value);
1003 return value * 255 / 100;
1004}
1005
1006static void eeepc_set_fan_pwm(int value)
1007{
1008 value = SENSORS_LIMIT(value, 0, 255);
1009 value = value * 100 / 255;
1010 ec_write(EEEPC_EC_FAN_PWM, value);
1011}
1012
1013static int eeepc_get_fan_rpm(void)
1014{
1015 u8 high = 0;
1016 u8 low = 0;
1017
1018 ec_read(EEEPC_EC_FAN_HRPM, &high);
1019 ec_read(EEEPC_EC_FAN_LRPM, &low);
1020 return high << 8 | low;
1021}
1022
1023static int eeepc_get_fan_ctrl(void)
1024{
1025 u8 value = 0;
1026
1027 ec_read(EEEPC_EC_FAN_CTRL, &value);
1028 if (value & 0x02)
1029 return 1; /* manual */
1030 else
1031 return 2; /* automatic */
1032}
1033
1034static void eeepc_set_fan_ctrl(int manual)
1035{
1036 u8 value = 0;
1037
1038 ec_read(EEEPC_EC_FAN_CTRL, &value);
1039 if (manual == 1)
1040 value |= 0x02;
1041 else
1042 value &= ~0x02;
1043 ec_write(EEEPC_EC_FAN_CTRL, value);
1044}
1045
1046static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
1047{
1048 int rv, value;
1049
1050 rv = parse_arg(buf, count, &value);
1051 if (rv > 0)
1052 set(value);
1053 return rv;
1054}
1055
1056static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
1057{
1058 return sprintf(buf, "%d\n", get());
1059}
1060
1061#define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
1062 static ssize_t show_##_name(struct device *dev, \
1063 struct device_attribute *attr, \
1064 char *buf) \
1065 { \
1066 return show_sys_hwmon(_set, buf); \
1067 } \
1068 static ssize_t store_##_name(struct device *dev, \
1069 struct device_attribute *attr, \
1070 const char *buf, size_t count) \
1071 { \
1072 return store_sys_hwmon(_get, buf, count); \
1073 } \
1074 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
1075
1076EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
1077EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
1078 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
1079EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
1080 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
1081
1082static ssize_t
1083show_name(struct device *dev, struct device_attribute *attr, char *buf)
1084{
1085 return sprintf(buf, "eeepc\n");
1086}
1087static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
1088
1089static struct attribute *hwmon_attributes[] = {
1090 &sensor_dev_attr_pwm1.dev_attr.attr,
1091 &sensor_dev_attr_fan1_input.dev_attr.attr,
1092 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1093 &sensor_dev_attr_name.dev_attr.attr,
1094 NULL
1095};
1096
1097static struct attribute_group hwmon_attribute_group = {
1098 .attrs = hwmon_attributes
1099};
1100
1101static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc)
1102{
1103 struct device *hwmon;
1104
1105 hwmon = eeepc->hwmon_device;
1106 if (!hwmon)
1107 return;
1108 sysfs_remove_group(&hwmon->kobj,
1109 &hwmon_attribute_group);
1110 hwmon_device_unregister(hwmon);
1111 eeepc->hwmon_device = NULL;
1112}
1113
1114static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
1115{
1116 struct device *hwmon;
1117 int result;
1118
1119 hwmon = hwmon_device_register(&eeepc->platform_device->dev);
1120 if (IS_ERR(hwmon)) {
1121 pr_err("Could not register eeepc hwmon device\n");
1122 eeepc->hwmon_device = NULL;
1123 return PTR_ERR(hwmon);
1124 }
1125 eeepc->hwmon_device = hwmon;
1126 result = sysfs_create_group(&hwmon->kobj,
1127 &hwmon_attribute_group);
1128 if (result)
1129 eeepc_hwmon_exit(eeepc);
1130 return result;
1131}
1132
1133/*
1134 * Backlight device
1135 */
1136static int read_brightness(struct backlight_device *bd)
1137{
1138 struct eeepc_laptop *eeepc = bl_get_data(bd);
1139
1140 return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
1141}
1142
1143static int set_brightness(struct backlight_device *bd, int value)
1144{
1145 struct eeepc_laptop *eeepc = bl_get_data(bd);
1146
1147 return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
1148}
1149
1150static int update_bl_status(struct backlight_device *bd)
1151{
1152 return set_brightness(bd, bd->props.brightness);
1153}
1154
1155static const struct backlight_ops eeepcbl_ops = {
1156 .get_brightness = read_brightness,
1157 .update_status = update_bl_status,
1158};
1159
1160static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
1161{
1162 struct backlight_device *bd = eeepc->backlight_device;
1163 int old = bd->props.brightness;
1164
1165 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1166
1167 return old;
1168}
1169
1170static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
1171{
1172 struct backlight_properties props;
1173 struct backlight_device *bd;
1174
1175 memset(&props, 0, sizeof(struct backlight_properties));
1176 props.type = BACKLIGHT_PLATFORM;
1177 props.max_brightness = 15;
1178 bd = backlight_device_register(EEEPC_LAPTOP_FILE,
1179 &eeepc->platform_device->dev, eeepc,
1180 &eeepcbl_ops, &props);
1181 if (IS_ERR(bd)) {
1182 pr_err("Could not register eeepc backlight device\n");
1183 eeepc->backlight_device = NULL;
1184 return PTR_ERR(bd);
1185 }
1186 eeepc->backlight_device = bd;
1187 bd->props.brightness = read_brightness(bd);
1188 bd->props.power = FB_BLANK_UNBLANK;
1189 backlight_update_status(bd);
1190 return 0;
1191}
1192
1193static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
1194{
1195 if (eeepc->backlight_device)
1196 backlight_device_unregister(eeepc->backlight_device);
1197 eeepc->backlight_device = NULL;
1198}
1199
1200
1201/*
1202 * Input device (i.e. hotkeys)
1203 */
1204static int eeepc_input_init(struct eeepc_laptop *eeepc)
1205{
1206 struct input_dev *input;
1207 int error;
1208
1209 input = input_allocate_device();
1210 if (!input) {
1211 pr_info("Unable to allocate input device\n");
1212 return -ENOMEM;
1213 }
1214
1215 input->name = "Asus EeePC extra buttons";
1216 input->phys = EEEPC_LAPTOP_FILE "/input0";
1217 input->id.bustype = BUS_HOST;
1218 input->dev.parent = &eeepc->platform_device->dev;
1219
1220 error = sparse_keymap_setup(input, eeepc_keymap, NULL);
1221 if (error) {
1222 pr_err("Unable to setup input device keymap\n");
1223 goto err_free_dev;
1224 }
1225
1226 error = input_register_device(input);
1227 if (error) {
1228 pr_err("Unable to register input device\n");
1229 goto err_free_keymap;
1230 }
1231
1232 eeepc->inputdev = input;
1233 return 0;
1234
1235err_free_keymap:
1236 sparse_keymap_free(input);
1237err_free_dev:
1238 input_free_device(input);
1239 return error;
1240}
1241
1242static void eeepc_input_exit(struct eeepc_laptop *eeepc)
1243{
1244 if (eeepc->inputdev) {
1245 sparse_keymap_free(eeepc->inputdev);
1246 input_unregister_device(eeepc->inputdev);
1247 }
1248 eeepc->inputdev = NULL;
1249}
1250
1251/*
1252 * ACPI driver
1253 */
1254static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
1255{
1256 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1257 u16 count;
1258
1259 if (event > ACPI_MAX_SYS_NOTIFY)
1260 return;
1261 count = eeepc->event_count[event % 128]++;
1262 acpi_bus_generate_proc_event(device, event, count);
1263 acpi_bus_generate_netlink_event(device->pnp.device_class,
1264 dev_name(&device->dev), event,
1265 count);
1266
1267 /* Brightness events are special */
1268 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) {
1269
1270 /* Ignore them completely if the acpi video driver is used */
1271 if (eeepc->backlight_device != NULL) {
1272 int old_brightness, new_brightness;
1273
1274 /* Update the backlight device. */
1275 old_brightness = eeepc_backlight_notify(eeepc);
1276
1277 /* Convert event to keypress (obsolescent hack) */
1278 new_brightness = event - NOTIFY_BRN_MIN;
1279
1280 if (new_brightness < old_brightness) {
1281 event = NOTIFY_BRN_MIN; /* brightness down */
1282 } else if (new_brightness > old_brightness) {
1283 event = NOTIFY_BRN_MAX; /* brightness up */
1284 } else {
1285 /*
1286 * no change in brightness - already at min/max,
1287 * event will be desired value (or else ignored)
1288 */
1289 }
1290 sparse_keymap_report_event(eeepc->inputdev, event,
1291 1, true);
1292 }
1293 } else {
1294 /* Everything else is a bona-fide keypress event */
1295 sparse_keymap_report_event(eeepc->inputdev, event, 1, true);
1296 }
1297}
1298
1299static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
1300{
1301 const char *model;
1302
1303 model = dmi_get_system_info(DMI_PRODUCT_NAME);
1304 if (!model)
1305 return;
1306
1307 /*
1308 * Blacklist for setting cpufv (cpu speed).
1309 *
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.
1313 *
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).
1316 *
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
1319 *
1320 * The hang has also been reported on a "702" (Model name "8G"?).
1321 *
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.
1325 */
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 "
1329 "speed\n", model);
1330 pr_info("cpufv disabled to avoid instability\n");
1331 }
1332
1333 /*
1334 * Blacklist for wlan hotplug
1335 *
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
1338 * device...
1339 */
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");
1344 }
1345}
1346
1347static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
1348{
1349 int dummy;
1350
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;
1358 }
1359}
1360
1361static void cmsg_quirks(struct eeepc_laptop *eeepc)
1362{
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");
1367}
1368
1369static int __devinit eeepc_acpi_init(struct eeepc_laptop *eeepc)
1370{
1371 unsigned int init_flags;
1372 int result;
1373
1374 result = acpi_bus_get_status(eeepc->device);
1375 if (result)
1376 return result;
1377 if (!eeepc->device->status.present) {
1378 pr_err("Hotkey device not present, aborting\n");
1379 return -ENODEV;
1380 }
1381
1382 init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
1383 pr_notice("Hotkey init flags 0x%x\n", init_flags);
1384
1385 if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
1386 pr_err("Hotkey initialization failed\n");
1387 return -ENODEV;
1388 }
1389
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");
1393 return -ENODEV;
1394 }
1395 cmsg_quirks(eeepc);
1396 pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
1397
1398 return 0;
1399}
1400
1401static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc)
1402{
1403 /*
1404 * If the following call to set_acpi() fails, it's because there's no
1405 * camera so we can ignore the error.
1406 */
1407 if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
1408 set_acpi(eeepc, CM_ASL_CAMERA, 1);
1409}
1410
1411static bool eeepc_device_present;
1412
1413static int __devinit eeepc_acpi_add(struct acpi_device *device)
1414{
1415 struct eeepc_laptop *eeepc;
1416 int result;
1417
1418 pr_notice(EEEPC_LAPTOP_NAME "\n");
1419 eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
1420 if (!eeepc)
1421 return -ENOMEM;
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;
1427
1428 eeepc->hotplug_disabled = hotplug_disabled;
1429
1430 eeepc_dmi_check(eeepc);
1431
1432 result = eeepc_acpi_init(eeepc);
1433 if (result)
1434 goto fail_platform;
1435 eeepc_enable_camera(eeepc);
1436
1437 /*
1438 * Register the platform device first. It is used as a parent for the
1439 * sub-devices below.
1440 *
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).
1448 */
1449 result = eeepc_platform_init(eeepc);
1450 if (result)
1451 goto fail_platform;
1452
1453 if (!acpi_video_backlight_support()) {
1454 result = eeepc_backlight_init(eeepc);
1455 if (result)
1456 goto fail_backlight;
1457 } else
1458 pr_info("Backlight controlled by ACPI video driver\n");
1459
1460 result = eeepc_input_init(eeepc);
1461 if (result)
1462 goto fail_input;
1463
1464 result = eeepc_hwmon_init(eeepc);
1465 if (result)
1466 goto fail_hwmon;
1467
1468 result = eeepc_led_init(eeepc);
1469 if (result)
1470 goto fail_led;
1471
1472 result = eeepc_rfkill_init(eeepc);
1473 if (result)
1474 goto fail_rfkill;
1475
1476 eeepc_device_present = true;
1477 return 0;
1478
1479fail_rfkill:
1480 eeepc_led_exit(eeepc);
1481fail_led:
1482 eeepc_hwmon_exit(eeepc);
1483fail_hwmon:
1484 eeepc_input_exit(eeepc);
1485fail_input:
1486 eeepc_backlight_exit(eeepc);
1487fail_backlight:
1488 eeepc_platform_exit(eeepc);
1489fail_platform:
1490 kfree(eeepc);
1491
1492 return result;
1493}
1494
1495static int eeepc_acpi_remove(struct acpi_device *device, int type)
1496{
1497 struct eeepc_laptop *eeepc = acpi_driver_data(device);
1498
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);
1505
1506 kfree(eeepc);
1507 return 0;
1508}
1509
1510
1511static const struct acpi_device_id eeepc_device_ids[] = {
1512 {EEEPC_ACPI_HID, 0},
1513 {"", 0},
1514};
1515MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
1516
1517static 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,
1523 .ops = {
1524 .add = eeepc_acpi_add,
1525 .remove = eeepc_acpi_remove,
1526 .notify = eeepc_acpi_notify,
1527 },
1528};
1529
1530
1531static int __init eeepc_laptop_init(void)
1532{
1533 int result;
1534
1535 result = platform_driver_register(&platform_driver);
1536 if (result < 0)
1537 return result;
1538
1539 result = acpi_bus_register_driver(&eeepc_acpi_driver);
1540 if (result < 0)
1541 goto fail_acpi_driver;
1542
1543 if (!eeepc_device_present) {
1544 result = -ENODEV;
1545 goto fail_no_device;
1546 }
1547
1548 return 0;
1549
1550fail_no_device:
1551 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1552fail_acpi_driver:
1553 platform_driver_unregister(&platform_driver);
1554 return result;
1555}
1556
1557static void __exit eeepc_laptop_exit(void)
1558{
1559 acpi_bus_unregister_driver(&eeepc_acpi_driver);
1560 platform_driver_unregister(&platform_driver);
1561}
1562
1563module_init(eeepc_laptop_init);
1564module_exit(eeepc_laptop_exit);