2 * toshiba_acpi.c - Toshiba Laptop ACPI Extras
5 * Copyright (C) 2002-2004 John Belmonte
6 * Copyright (C) 2008 Philip Langdale
7 * Copyright (C) 2010 Pierre Ducroquet
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * The devolpment page for this driver is located at
25 * http://memebeam.org/toys/ToshibaAcpiDriver.
28 * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
29 * engineering the Windows drivers
30 * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
31 * Rob Miller - TV out and hotkeys help
38 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
40 #define TOSHIBA_ACPI_VERSION "0.19"
41 #define PROC_INTERFACE_VERSION 1
43 #include <linux/kernel.h>
44 #include <linux/module.h>
45 #include <linux/init.h>
46 #include <linux/types.h>
47 #include <linux/proc_fs.h>
48 #include <linux/seq_file.h>
49 #include <linux/backlight.h>
50 #include <linux/rfkill.h>
51 #include <linux/input.h>
52 #include <linux/input/sparse-keymap.h>
53 #include <linux/leds.h>
54 #include <linux/slab.h>
56 #include <asm/uaccess.h>
58 #include <acpi/acpi_drivers.h>
60 MODULE_AUTHOR("John Belmonte");
61 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
62 MODULE_LICENSE("GPL");
64 /* Toshiba ACPI method paths */
65 #define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
67 /* Toshiba HCI interface definitions
69 * HCI is Toshiba's "Hardware Control Interface" which is supposed to
70 * be uniform across all their models. Ideally we would just call
71 * dedicated ACPI methods instead of using this primitive interface.
72 * However the ACPI methods seem to be incomplete in some areas (for
73 * example they allow setting, but not reading, the LCD brightness value),
74 * so this is still useful.
80 #define HCI_SET 0xff00
81 #define HCI_GET 0xfe00
84 #define HCI_SUCCESS 0x0000
85 #define HCI_FAILURE 0x1000
86 #define HCI_NOT_SUPPORTED 0x8000
87 #define HCI_EMPTY 0x8c00
90 #define HCI_FAN 0x0004
91 #define HCI_SYSTEM_EVENT 0x0016
92 #define HCI_VIDEO_OUT 0x001c
93 #define HCI_HOTKEY_EVENT 0x001e
94 #define HCI_LCD_BRIGHTNESS 0x002a
95 #define HCI_WIRELESS 0x0056
97 /* field definitions */
98 #define HCI_LCD_BRIGHTNESS_BITS 3
99 #define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
100 #define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
101 #define HCI_VIDEO_OUT_LCD 0x1
102 #define HCI_VIDEO_OUT_CRT 0x2
103 #define HCI_VIDEO_OUT_TV 0x4
104 #define HCI_WIRELESS_KILL_SWITCH 0x01
105 #define HCI_WIRELESS_BT_PRESENT 0x0f
106 #define HCI_WIRELESS_BT_ATTACH 0x40
107 #define HCI_WIRELESS_BT_POWER 0x80
109 struct toshiba_acpi_dev {
110 struct acpi_device *acpi_dev;
111 const char *method_hci;
112 struct rfkill *bt_rfk;
113 struct input_dev *hotkey_dev;
114 struct backlight_device *backlight_dev;
115 struct led_classdev led_dev;
121 int illumination_supported:1;
122 int video_supported:1;
128 static const struct acpi_device_id toshiba_device_ids[] = {
134 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
136 static const struct key_entry toshiba_acpi_keymap[] __devinitconst = {
137 { KE_KEY, 0x101, { KEY_MUTE } },
138 { KE_KEY, 0x102, { KEY_ZOOMOUT } },
139 { KE_KEY, 0x103, { KEY_ZOOMIN } },
140 { KE_KEY, 0x13b, { KEY_COFFEE } },
141 { KE_KEY, 0x13c, { KEY_BATTERY } },
142 { KE_KEY, 0x13d, { KEY_SLEEP } },
143 { KE_KEY, 0x13e, { KEY_SUSPEND } },
144 { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
145 { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
146 { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
147 { KE_KEY, 0x142, { KEY_WLAN } },
148 { KE_KEY, 0x143, { KEY_PROG1 } },
149 { KE_KEY, 0x17f, { KEY_FN } },
150 { KE_KEY, 0xb05, { KEY_PROG2 } },
151 { KE_KEY, 0xb06, { KEY_WWW } },
152 { KE_KEY, 0xb07, { KEY_MAIL } },
153 { KE_KEY, 0xb30, { KEY_STOP } },
154 { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
155 { KE_KEY, 0xb32, { KEY_NEXTSONG } },
156 { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
157 { KE_KEY, 0xb5a, { KEY_MEDIA } },
164 static __inline__ void _set_bit(u32 * word, u32 mask, int value)
166 *word = (*word & ~mask) | (mask * value);
169 /* acpi interface wrappers
172 static int write_acpi_int(const char *methodName, int val)
174 struct acpi_object_list params;
175 union acpi_object in_objs[1];
178 params.count = ARRAY_SIZE(in_objs);
179 params.pointer = in_objs;
180 in_objs[0].type = ACPI_TYPE_INTEGER;
181 in_objs[0].integer.value = val;
183 status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL);
184 return (status == AE_OK) ? 0 : -EIO;
187 /* Perform a raw HCI call. Here we don't care about input or output buffer
190 static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
191 const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
193 struct acpi_object_list params;
194 union acpi_object in_objs[HCI_WORDS];
195 struct acpi_buffer results;
196 union acpi_object out_objs[HCI_WORDS + 1];
200 params.count = HCI_WORDS;
201 params.pointer = in_objs;
202 for (i = 0; i < HCI_WORDS; ++i) {
203 in_objs[i].type = ACPI_TYPE_INTEGER;
204 in_objs[i].integer.value = in[i];
207 results.length = sizeof(out_objs);
208 results.pointer = out_objs;
210 status = acpi_evaluate_object(dev->acpi_dev->handle,
211 (char *)dev->method_hci, ¶ms,
213 if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
214 for (i = 0; i < out_objs->package.count; ++i) {
215 out[i] = out_objs->package.elements[i].integer.value;
222 /* common hci tasks (get or set one or two value)
224 * In addition to the ACPI status, the HCI system returns a result which
225 * may be useful (such as "not supported").
228 static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
229 u32 in1, u32 *result)
231 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
233 acpi_status status = hci_raw(dev, in, out);
234 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
238 static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
239 u32 *out1, u32 *result)
241 u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
243 acpi_status status = hci_raw(dev, in, out);
245 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
249 static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
250 u32 in1, u32 in2, u32 *result)
252 u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
254 acpi_status status = hci_raw(dev, in, out);
255 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
259 static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
260 u32 *out1, u32 *out2, u32 *result)
262 u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
264 acpi_status status = hci_raw(dev, in, out);
267 *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
271 /* Illumination support */
272 static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
274 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
279 status = hci_raw(dev, in, out);
280 if (ACPI_FAILURE(status)) {
281 pr_info("Illumination device not available\n");
285 status = hci_raw(dev, in, out);
289 static void toshiba_illumination_set(struct led_classdev *cdev,
290 enum led_brightness brightness)
292 struct toshiba_acpi_dev *dev = container_of(cdev,
293 struct toshiba_acpi_dev, led_dev);
294 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
298 /* First request : initialize communication. */
300 status = hci_raw(dev, in, out);
301 if (ACPI_FAILURE(status)) {
302 pr_info("Illumination device not available\n");
307 /* Switch the illumination on */
311 status = hci_raw(dev, in, out);
312 if (ACPI_FAILURE(status)) {
313 pr_info("ACPI call for illumination failed\n");
317 /* Switch the illumination off */
321 status = hci_raw(dev, in, out);
322 if (ACPI_FAILURE(status)) {
323 pr_info("ACPI call for illumination failed.\n");
328 /* Last request : close communication. */
332 hci_raw(dev, in, out);
335 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
337 struct toshiba_acpi_dev *dev = container_of(cdev,
338 struct toshiba_acpi_dev, led_dev);
339 u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
342 enum led_brightness result;
344 /*Â First request : initialize communication. */
346 status = hci_raw(dev, in, out);
347 if (ACPI_FAILURE(status)) {
348 pr_info("Illumination device not available\n");
352 /* Check the illumination */
355 status = hci_raw(dev, in, out);
356 if (ACPI_FAILURE(status)) {
357 pr_info("ACPI call for illumination failed.\n");
361 result = out[2] ? LED_FULL : LED_OFF;
363 /* Last request : close communication. */
367 hci_raw(dev, in, out);
372 /* Bluetooth rfkill handlers */
374 static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
381 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
382 if (hci_result == HCI_SUCCESS)
383 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
388 static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
395 hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
397 *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
401 static int bt_rfkill_set_block(void *data, bool blocked)
403 struct toshiba_acpi_dev *dev = data;
404 u32 result1, result2;
409 value = (blocked == false);
411 mutex_lock(&dev->mutex);
412 if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
422 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
423 hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
425 if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
430 mutex_unlock(&dev->mutex);
434 static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
439 struct toshiba_acpi_dev *dev = data;
441 mutex_lock(&dev->mutex);
443 hci_result = hci_get_radio_state(dev, &value);
444 if (hci_result != HCI_SUCCESS) {
445 /* Can't do anything useful */
446 mutex_unlock(&dev->mutex);
450 new_rfk_state = value;
452 mutex_unlock(&dev->mutex);
454 if (rfkill_set_hw_state(rfkill, !new_rfk_state))
455 bt_rfkill_set_block(data, true);
458 static const struct rfkill_ops toshiba_rfk_ops = {
459 .set_block = bt_rfkill_set_block,
460 .poll = bt_rfkill_poll,
463 static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
465 static int get_lcd(struct backlight_device *bd)
467 struct toshiba_acpi_dev *dev = bl_get_data(bd);
471 hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
472 if (hci_result == HCI_SUCCESS)
473 return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
478 static int lcd_proc_show(struct seq_file *m, void *v)
480 struct toshiba_acpi_dev *dev = m->private;
483 if (!dev->backlight_dev)
486 value = get_lcd(dev->backlight_dev);
488 seq_printf(m, "brightness: %d\n", value);
489 seq_printf(m, "brightness_levels: %d\n",
490 HCI_LCD_BRIGHTNESS_LEVELS);
494 pr_err("Error reading LCD brightness\n");
498 static int lcd_proc_open(struct inode *inode, struct file *file)
500 return single_open(file, lcd_proc_show, PDE(inode)->data);
503 static int set_lcd(struct toshiba_acpi_dev *dev, int value)
507 value = value << HCI_LCD_BRIGHTNESS_SHIFT;
508 hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
509 return hci_result == HCI_SUCCESS ? 0 : -EIO;
512 static int set_lcd_status(struct backlight_device *bd)
514 struct toshiba_acpi_dev *dev = bl_get_data(bd);
515 return set_lcd(dev, bd->props.brightness);
518 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
519 size_t count, loff_t *pos)
521 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
527 len = min(count, sizeof(cmd) - 1);
528 if (copy_from_user(cmd, buf, len))
532 if (sscanf(cmd, " brightness : %i", &value) == 1 &&
533 value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
534 ret = set_lcd(dev, value);
543 static const struct file_operations lcd_proc_fops = {
544 .owner = THIS_MODULE,
545 .open = lcd_proc_open,
548 .release = single_release,
549 .write = lcd_proc_write,
552 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
556 hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
557 return hci_result == HCI_SUCCESS ? 0 : -EIO;
560 static int video_proc_show(struct seq_file *m, void *v)
562 struct toshiba_acpi_dev *dev = m->private;
566 ret = get_video_status(dev, &value);
568 int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
569 int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
570 int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
571 seq_printf(m, "lcd_out: %d\n", is_lcd);
572 seq_printf(m, "crt_out: %d\n", is_crt);
573 seq_printf(m, "tv_out: %d\n", is_tv);
579 static int video_proc_open(struct inode *inode, struct file *file)
581 return single_open(file, video_proc_show, PDE(inode)->data);
584 static ssize_t video_proc_write(struct file *file, const char __user *buf,
585 size_t count, loff_t *pos)
587 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
597 cmd = kmalloc(count + 1, GFP_KERNEL);
600 if (copy_from_user(cmd, buf, count)) {
608 /* scan expression. Multiple expressions may be delimited with ;
610 * NOTE: to keep scanning simple, invalid fields are ignored
613 if (sscanf(buffer, " lcd_out : %i", &value) == 1)
615 else if (sscanf(buffer, " crt_out : %i", &value) == 1)
617 else if (sscanf(buffer, " tv_out : %i", &value) == 1)
619 /* advance to one character past the next ; */
624 while (remain && *(buffer - 1) != ';');
629 ret = get_video_status(dev, &video_out);
631 unsigned int new_video_out = video_out;
633 _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
635 _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
637 _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
638 /* To avoid unnecessary video disruption, only write the new
639 * video setting if something changed. */
640 if (new_video_out != video_out)
641 ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
644 return ret ? ret : count;
647 static const struct file_operations video_proc_fops = {
648 .owner = THIS_MODULE,
649 .open = video_proc_open,
652 .release = single_release,
653 .write = video_proc_write,
656 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
660 hci_read1(dev, HCI_FAN, status, &hci_result);
661 return hci_result == HCI_SUCCESS ? 0 : -EIO;
664 static int fan_proc_show(struct seq_file *m, void *v)
666 struct toshiba_acpi_dev *dev = m->private;
670 ret = get_fan_status(dev, &value);
672 seq_printf(m, "running: %d\n", (value > 0));
673 seq_printf(m, "force_on: %d\n", dev->force_fan);
679 static int fan_proc_open(struct inode *inode, struct file *file)
681 return single_open(file, fan_proc_show, PDE(inode)->data);
684 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
685 size_t count, loff_t *pos)
687 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
693 len = min(count, sizeof(cmd) - 1);
694 if (copy_from_user(cmd, buf, len))
698 if (sscanf(cmd, " force_on : %i", &value) == 1 &&
699 value >= 0 && value <= 1) {
700 hci_write1(dev, HCI_FAN, value, &hci_result);
701 if (hci_result != HCI_SUCCESS)
704 dev->force_fan = value;
712 static const struct file_operations fan_proc_fops = {
713 .owner = THIS_MODULE,
714 .open = fan_proc_open,
717 .release = single_release,
718 .write = fan_proc_write,
721 static int keys_proc_show(struct seq_file *m, void *v)
723 struct toshiba_acpi_dev *dev = m->private;
727 if (!dev->key_event_valid) {
728 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
729 if (hci_result == HCI_SUCCESS) {
730 dev->key_event_valid = 1;
731 dev->last_key_event = value;
732 } else if (hci_result == HCI_EMPTY) {
733 /* better luck next time */
734 } else if (hci_result == HCI_NOT_SUPPORTED) {
735 /* This is a workaround for an unresolved issue on
736 * some machines where system events sporadically
737 * become disabled. */
738 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
739 pr_notice("Re-enabled hotkeys\n");
741 pr_err("Error reading hotkey status\n");
746 seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
747 seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
751 static int keys_proc_open(struct inode *inode, struct file *file)
753 return single_open(file, keys_proc_show, PDE(inode)->data);
756 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
757 size_t count, loff_t *pos)
759 struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data;
764 len = min(count, sizeof(cmd) - 1);
765 if (copy_from_user(cmd, buf, len))
769 if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
770 dev->key_event_valid = 0;
778 static const struct file_operations keys_proc_fops = {
779 .owner = THIS_MODULE,
780 .open = keys_proc_open,
783 .release = single_release,
784 .write = keys_proc_write,
787 static int version_proc_show(struct seq_file *m, void *v)
789 seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
790 seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
794 static int version_proc_open(struct inode *inode, struct file *file)
796 return single_open(file, version_proc_show, PDE(inode)->data);
799 static const struct file_operations version_proc_fops = {
800 .owner = THIS_MODULE,
801 .open = version_proc_open,
804 .release = single_release,
807 /* proc and module init
810 #define PROC_TOSHIBA "toshiba"
812 static void __devinit
813 create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
815 if (dev->backlight_dev)
816 proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
817 &lcd_proc_fops, dev);
818 if (dev->video_supported)
819 proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
820 &video_proc_fops, dev);
821 if (dev->fan_supported)
822 proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
823 &fan_proc_fops, dev);
825 proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
826 &keys_proc_fops, dev);
827 proc_create_data("version", S_IRUGO, toshiba_proc_dir,
828 &version_proc_fops, dev);
831 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
833 if (dev->backlight_dev)
834 remove_proc_entry("lcd", toshiba_proc_dir);
835 if (dev->video_supported)
836 remove_proc_entry("video", toshiba_proc_dir);
837 if (dev->fan_supported)
838 remove_proc_entry("fan", toshiba_proc_dir);
840 remove_proc_entry("keys", toshiba_proc_dir);
841 remove_proc_entry("version", toshiba_proc_dir);
844 static const struct backlight_ops toshiba_backlight_data = {
845 .get_brightness = get_lcd,
846 .update_status = set_lcd_status,
849 static int __devinit toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
854 dev->hotkey_dev = input_allocate_device();
855 if (!dev->hotkey_dev) {
856 pr_info("Unable to register input device\n");
860 dev->hotkey_dev->name = "Toshiba input device";
861 dev->hotkey_dev->phys = "toshiba_acpi/input0";
862 dev->hotkey_dev->id.bustype = BUS_HOST;
864 error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
868 status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
869 if (ACPI_FAILURE(status)) {
870 pr_info("Unable to enable hotkeys\n");
872 goto err_free_keymap;
875 error = input_register_device(dev->hotkey_dev);
877 pr_info("Unable to register input device\n");
878 goto err_free_keymap;
884 sparse_keymap_free(dev->hotkey_dev);
886 input_free_device(dev->hotkey_dev);
887 dev->hotkey_dev = NULL;
891 static int toshiba_acpi_remove(struct acpi_device *acpi_dev, int type)
893 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
895 remove_toshiba_proc_entries(dev);
897 if (dev->hotkey_dev) {
898 input_unregister_device(dev->hotkey_dev);
899 sparse_keymap_free(dev->hotkey_dev);
903 rfkill_unregister(dev->bt_rfk);
904 rfkill_destroy(dev->bt_rfk);
907 if (dev->backlight_dev)
908 backlight_device_unregister(dev->backlight_dev);
910 if (dev->illumination_supported)
911 led_classdev_unregister(&dev->led_dev);
918 static const char * __devinit find_hci_method(acpi_handle handle)
921 acpi_handle hci_handle;
923 status = acpi_get_handle(handle, "GHCI", &hci_handle);
924 if (ACPI_SUCCESS(status))
927 status = acpi_get_handle(handle, "SPFC", &hci_handle);
928 if (ACPI_SUCCESS(status))
934 static int __devinit toshiba_acpi_add(struct acpi_device *acpi_dev)
936 struct toshiba_acpi_dev *dev;
937 const char *hci_method;
942 struct backlight_properties props;
944 pr_info("Toshiba Laptop ACPI Extras version %s\n",
945 TOSHIBA_ACPI_VERSION);
947 hci_method = find_hci_method(acpi_dev->handle);
949 pr_err("HCI interface not found\n");
953 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
956 dev->acpi_dev = acpi_dev;
957 dev->method_hci = hci_method;
958 acpi_dev->driver_data = dev;
960 if (toshiba_acpi_setup_keyboard(dev))
961 pr_info("Unable to activate hotkeys\n");
963 mutex_init(&dev->mutex);
965 /* enable event fifo */
966 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
968 props.type = BACKLIGHT_PLATFORM;
969 props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
970 dev->backlight_dev = backlight_device_register("toshiba",
973 &toshiba_backlight_data,
975 if (IS_ERR(dev->backlight_dev)) {
976 ret = PTR_ERR(dev->backlight_dev);
978 pr_err("Could not register toshiba backlight device\n");
979 dev->backlight_dev = NULL;
983 /* Register rfkill switch for Bluetooth */
984 if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
985 dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
987 RFKILL_TYPE_BLUETOOTH,
991 pr_err("unable to allocate rfkill device\n");
996 ret = rfkill_register(dev->bt_rfk);
998 pr_err("unable to register rfkill device\n");
999 rfkill_destroy(dev->bt_rfk);
1004 if (toshiba_illumination_available(dev)) {
1005 dev->led_dev.name = "toshiba::illumination";
1006 dev->led_dev.max_brightness = 1;
1007 dev->led_dev.brightness_set = toshiba_illumination_set;
1008 dev->led_dev.brightness_get = toshiba_illumination_get;
1009 if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
1010 dev->illumination_supported = 1;
1013 /* Determine whether or not BIOS supports fan and video interfaces */
1015 ret = get_video_status(dev, &dummy);
1016 dev->video_supported = !ret;
1018 ret = get_fan_status(dev, &dummy);
1019 dev->fan_supported = !ret;
1021 create_toshiba_proc_entries(dev);
1026 toshiba_acpi_remove(acpi_dev, 0);
1030 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
1032 struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
1033 u32 hci_result, value;
1038 hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
1039 if (hci_result == HCI_SUCCESS) {
1042 /* act on key press; ignore key release */
1046 if (!sparse_keymap_report_event(dev->hotkey_dev,
1048 pr_info("Unknown key %x\n",
1051 } else if (hci_result == HCI_NOT_SUPPORTED) {
1052 /* This is a workaround for an unresolved issue on
1053 * some machines where system events sporadically
1054 * become disabled. */
1055 hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
1056 pr_notice("Re-enabled hotkeys\n");
1058 } while (hci_result != HCI_EMPTY);
1062 static struct acpi_driver toshiba_acpi_driver = {
1063 .name = "Toshiba ACPI driver",
1064 .owner = THIS_MODULE,
1065 .ids = toshiba_device_ids,
1066 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
1068 .add = toshiba_acpi_add,
1069 .remove = toshiba_acpi_remove,
1070 .notify = toshiba_acpi_notify,
1074 static int __init toshiba_acpi_init(void)
1078 toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
1079 if (!toshiba_proc_dir) {
1080 pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
1084 ret = acpi_bus_register_driver(&toshiba_acpi_driver);
1086 pr_err("Failed to register ACPI driver: %d\n", ret);
1087 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1093 static void __exit toshiba_acpi_exit(void)
1095 acpi_bus_unregister_driver(&toshiba_acpi_driver);
1096 if (toshiba_proc_dir)
1097 remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
1100 module_init(toshiba_acpi_init);
1101 module_exit(toshiba_acpi_exit);