| /* |
| * toshiba_acpi.c - Toshiba Laptop ACPI Extras |
| * |
| * |
| * Copyright (C) 2002-2004 John Belmonte |
| * Copyright (C) 2008 Philip Langdale |
| * Copyright (C) 2010 Pierre Ducroquet |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| * |
| * The devolpment page for this driver is located at |
| * http://memebeam.org/toys/ToshibaAcpiDriver. |
| * |
| * Credits: |
| * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse |
| * engineering the Windows drivers |
| * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5 |
| * Rob Miller - TV out and hotkeys help |
| * |
| * |
| * TODO |
| * |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #define TOSHIBA_ACPI_VERSION "0.19" |
| #define PROC_INTERFACE_VERSION 1 |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| #include <linux/backlight.h> |
| #include <linux/rfkill.h> |
| #include <linux/input.h> |
| #include <linux/input/sparse-keymap.h> |
| #include <linux/leds.h> |
| #include <linux/slab.h> |
| |
| #include <asm/uaccess.h> |
| |
| #include <acpi/acpi_drivers.h> |
| |
| MODULE_AUTHOR("John Belmonte"); |
| MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver"); |
| MODULE_LICENSE("GPL"); |
| |
| /* Toshiba ACPI method paths */ |
| #define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX" |
| |
| /* Toshiba HCI interface definitions |
| * |
| * HCI is Toshiba's "Hardware Control Interface" which is supposed to |
| * be uniform across all their models. Ideally we would just call |
| * dedicated ACPI methods instead of using this primitive interface. |
| * However the ACPI methods seem to be incomplete in some areas (for |
| * example they allow setting, but not reading, the LCD brightness value), |
| * so this is still useful. |
| */ |
| |
| #define HCI_WORDS 6 |
| |
| /* operations */ |
| #define HCI_SET 0xff00 |
| #define HCI_GET 0xfe00 |
| |
| /* return codes */ |
| #define HCI_SUCCESS 0x0000 |
| #define HCI_FAILURE 0x1000 |
| #define HCI_NOT_SUPPORTED 0x8000 |
| #define HCI_EMPTY 0x8c00 |
| |
| /* registers */ |
| #define HCI_FAN 0x0004 |
| #define HCI_SYSTEM_EVENT 0x0016 |
| #define HCI_VIDEO_OUT 0x001c |
| #define HCI_HOTKEY_EVENT 0x001e |
| #define HCI_LCD_BRIGHTNESS 0x002a |
| #define HCI_WIRELESS 0x0056 |
| |
| /* field definitions */ |
| #define HCI_LCD_BRIGHTNESS_BITS 3 |
| #define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS) |
| #define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS) |
| #define HCI_VIDEO_OUT_LCD 0x1 |
| #define HCI_VIDEO_OUT_CRT 0x2 |
| #define HCI_VIDEO_OUT_TV 0x4 |
| #define HCI_WIRELESS_KILL_SWITCH 0x01 |
| #define HCI_WIRELESS_BT_PRESENT 0x0f |
| #define HCI_WIRELESS_BT_ATTACH 0x40 |
| #define HCI_WIRELESS_BT_POWER 0x80 |
| |
| struct toshiba_acpi_dev { |
| struct acpi_device *acpi_dev; |
| const char *method_hci; |
| struct rfkill *bt_rfk; |
| struct input_dev *hotkey_dev; |
| struct backlight_device *backlight_dev; |
| struct led_classdev led_dev; |
| |
| int force_fan; |
| int last_key_event; |
| int key_event_valid; |
| |
| int illumination_supported:1; |
| int video_supported:1; |
| int fan_supported:1; |
| |
| struct mutex mutex; |
| }; |
| |
| static const struct acpi_device_id toshiba_device_ids[] = { |
| {"TOS6200", 0}, |
| {"TOS6208", 0}, |
| {"TOS1900", 0}, |
| {"", 0}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, toshiba_device_ids); |
| |
| static const struct key_entry toshiba_acpi_keymap[] __devinitconst = { |
| { KE_KEY, 0x101, { KEY_MUTE } }, |
| { KE_KEY, 0x102, { KEY_ZOOMOUT } }, |
| { KE_KEY, 0x103, { KEY_ZOOMIN } }, |
| { KE_KEY, 0x13b, { KEY_COFFEE } }, |
| { KE_KEY, 0x13c, { KEY_BATTERY } }, |
| { KE_KEY, 0x13d, { KEY_SLEEP } }, |
| { KE_KEY, 0x13e, { KEY_SUSPEND } }, |
| { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } }, |
| { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } }, |
| { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } }, |
| { KE_KEY, 0x142, { KEY_WLAN } }, |
| { KE_KEY, 0x143, { KEY_PROG1 } }, |
| { KE_KEY, 0x17f, { KEY_FN } }, |
| { KE_KEY, 0xb05, { KEY_PROG2 } }, |
| { KE_KEY, 0xb06, { KEY_WWW } }, |
| { KE_KEY, 0xb07, { KEY_MAIL } }, |
| { KE_KEY, 0xb30, { KEY_STOP } }, |
| { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } }, |
| { KE_KEY, 0xb32, { KEY_NEXTSONG } }, |
| { KE_KEY, 0xb33, { KEY_PLAYPAUSE } }, |
| { KE_KEY, 0xb5a, { KEY_MEDIA } }, |
| { KE_END, 0 }, |
| }; |
| |
| /* utility |
| */ |
| |
| static __inline__ void _set_bit(u32 * word, u32 mask, int value) |
| { |
| *word = (*word & ~mask) | (mask * value); |
| } |
| |
| /* acpi interface wrappers |
| */ |
| |
| static int write_acpi_int(const char *methodName, int val) |
| { |
| struct acpi_object_list params; |
| union acpi_object in_objs[1]; |
| acpi_status status; |
| |
| params.count = ARRAY_SIZE(in_objs); |
| params.pointer = in_objs; |
| in_objs[0].type = ACPI_TYPE_INTEGER; |
| in_objs[0].integer.value = val; |
| |
| status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL); |
| return (status == AE_OK) ? 0 : -EIO; |
| } |
| |
| /* Perform a raw HCI call. Here we don't care about input or output buffer |
| * format. |
| */ |
| static acpi_status hci_raw(struct toshiba_acpi_dev *dev, |
| const u32 in[HCI_WORDS], u32 out[HCI_WORDS]) |
| { |
| struct acpi_object_list params; |
| union acpi_object in_objs[HCI_WORDS]; |
| struct acpi_buffer results; |
| union acpi_object out_objs[HCI_WORDS + 1]; |
| acpi_status status; |
| int i; |
| |
| params.count = HCI_WORDS; |
| params.pointer = in_objs; |
| for (i = 0; i < HCI_WORDS; ++i) { |
| in_objs[i].type = ACPI_TYPE_INTEGER; |
| in_objs[i].integer.value = in[i]; |
| } |
| |
| results.length = sizeof(out_objs); |
| results.pointer = out_objs; |
| |
| status = acpi_evaluate_object(dev->acpi_dev->handle, |
| (char *)dev->method_hci, ¶ms, |
| &results); |
| if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) { |
| for (i = 0; i < out_objs->package.count; ++i) { |
| out[i] = out_objs->package.elements[i].integer.value; |
| } |
| } |
| |
| return status; |
| } |
| |
| /* common hci tasks (get or set one or two value) |
| * |
| * In addition to the ACPI status, the HCI system returns a result which |
| * may be useful (such as "not supported"). |
| */ |
| |
| static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg, |
| u32 in1, u32 *result) |
| { |
| u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 }; |
| u32 out[HCI_WORDS]; |
| acpi_status status = hci_raw(dev, in, out); |
| *result = (status == AE_OK) ? out[0] : HCI_FAILURE; |
| return status; |
| } |
| |
| static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg, |
| u32 *out1, u32 *result) |
| { |
| u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 }; |
| u32 out[HCI_WORDS]; |
| acpi_status status = hci_raw(dev, in, out); |
| *out1 = out[2]; |
| *result = (status == AE_OK) ? out[0] : HCI_FAILURE; |
| return status; |
| } |
| |
| static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg, |
| u32 in1, u32 in2, u32 *result) |
| { |
| u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 }; |
| u32 out[HCI_WORDS]; |
| acpi_status status = hci_raw(dev, in, out); |
| *result = (status == AE_OK) ? out[0] : HCI_FAILURE; |
| return status; |
| } |
| |
| static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg, |
| u32 *out1, u32 *out2, u32 *result) |
| { |
| u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 }; |
| u32 out[HCI_WORDS]; |
| acpi_status status = hci_raw(dev, in, out); |
| *out1 = out[2]; |
| *out2 = out[3]; |
| *result = (status == AE_OK) ? out[0] : HCI_FAILURE; |
| return status; |
| } |
| |
| /* Illumination support */ |
| static int toshiba_illumination_available(struct toshiba_acpi_dev *dev) |
| { |
| u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 }; |
| u32 out[HCI_WORDS]; |
| acpi_status status; |
| |
| in[0] = 0xf100; |
| status = hci_raw(dev, in, out); |
| if (ACPI_FAILURE(status)) { |
| pr_info("Illumination device not available\n"); |
| return 0; |
| } |
| in[0] = 0xf400; |
| status = hci_raw(dev, in, out); |
| return 1; |
| } |
| |
| static void toshiba_illumination_set(struct led_classdev *cdev, |
| enum led_brightness brightness) |
| { |
| struct toshiba_acpi_dev *dev = container_of(cdev, |
| struct toshiba_acpi_dev, led_dev); |
| u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 }; |
| u32 out[HCI_WORDS]; |
| acpi_status status; |
| |
| /* First request : initialize communication. */ |
| in[0] = 0xf100; |
| status = hci_raw(dev, in, out); |
| if (ACPI_FAILURE(status)) { |
| pr_info("Illumination device not available\n"); |
| return; |
| } |
| |
| if (brightness) { |
| /* Switch the illumination on */ |
| in[0] = 0xf400; |
| in[1] = 0x14e; |
| in[2] = 1; |
| status = hci_raw(dev, in, out); |
| if (ACPI_FAILURE(status)) { |
| pr_info("ACPI call for illumination failed\n"); |
| return; |
| } |
| } else { |
| /* Switch the illumination off */ |
| in[0] = 0xf400; |
| in[1] = 0x14e; |
| in[2] = 0; |
| status = hci_raw(dev, in, out); |
| if (ACPI_FAILURE(status)) { |
| pr_info("ACPI call for illumination failed.\n"); |
| return; |
| } |
| } |
| |
| /* Last request : close communication. */ |
| in[0] = 0xf200; |
| in[1] = 0; |
| in[2] = 0; |
| hci_raw(dev, in, out); |
| } |
| |
| static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev) |
| { |
| struct toshiba_acpi_dev *dev = container_of(cdev, |
| struct toshiba_acpi_dev, led_dev); |
| u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 }; |
| u32 out[HCI_WORDS]; |
| acpi_status status; |
| enum led_brightness result; |
| |
| /* First request : initialize communication. */ |
| in[0] = 0xf100; |
| status = hci_raw(dev, in, out); |
| if (ACPI_FAILURE(status)) { |
| pr_info("Illumination device not available\n"); |
| return LED_OFF; |
| } |
| |
| /* Check the illumination */ |
| in[0] = 0xf300; |
| in[1] = 0x14e; |
| status = hci_raw(dev, in, out); |
| if (ACPI_FAILURE(status)) { |
| pr_info("ACPI call for illumination failed.\n"); |
| return LED_OFF; |
| } |
| |
| result = out[2] ? LED_FULL : LED_OFF; |
| |
| /* Last request : close communication. */ |
| in[0] = 0xf200; |
| in[1] = 0; |
| in[2] = 0; |
| hci_raw(dev, in, out); |
| |
| return result; |
| } |
| |
| /* Bluetooth rfkill handlers */ |
| |
| static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present) |
| { |
| u32 hci_result; |
| u32 value, value2; |
| |
| value = 0; |
| value2 = 0; |
| hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result); |
| if (hci_result == HCI_SUCCESS) |
| *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false; |
| |
| return hci_result; |
| } |
| |
| static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state) |
| { |
| u32 hci_result; |
| u32 value, value2; |
| |
| value = 0; |
| value2 = 0x0001; |
| hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result); |
| |
| *radio_state = value & HCI_WIRELESS_KILL_SWITCH; |
| return hci_result; |
| } |
| |
| static int bt_rfkill_set_block(void *data, bool blocked) |
| { |
| struct toshiba_acpi_dev *dev = data; |
| u32 result1, result2; |
| u32 value; |
| int err; |
| bool radio_state; |
| |
| value = (blocked == false); |
| |
| mutex_lock(&dev->mutex); |
| if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) { |
| err = -EIO; |
| goto out; |
| } |
| |
| if (!radio_state) { |
| err = 0; |
| goto out; |
| } |
| |
| hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1); |
| hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2); |
| |
| if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS) |
| err = -EIO; |
| else |
| err = 0; |
| out: |
| mutex_unlock(&dev->mutex); |
| return err; |
| } |
| |
| static void bt_rfkill_poll(struct rfkill *rfkill, void *data) |
| { |
| bool new_rfk_state; |
| bool value; |
| u32 hci_result; |
| struct toshiba_acpi_dev *dev = data; |
| |
| mutex_lock(&dev->mutex); |
| |
| hci_result = hci_get_radio_state(dev, &value); |
| if (hci_result != HCI_SUCCESS) { |
| /* Can't do anything useful */ |
| mutex_unlock(&dev->mutex); |
| return; |
| } |
| |
| new_rfk_state = value; |
| |
| mutex_unlock(&dev->mutex); |
| |
| if (rfkill_set_hw_state(rfkill, !new_rfk_state)) |
| bt_rfkill_set_block(data, true); |
| } |
| |
| static const struct rfkill_ops toshiba_rfk_ops = { |
| .set_block = bt_rfkill_set_block, |
| .poll = bt_rfkill_poll, |
| }; |
| |
| static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ; |
| |
| static int get_lcd(struct backlight_device *bd) |
| { |
| struct toshiba_acpi_dev *dev = bl_get_data(bd); |
| u32 hci_result; |
| u32 value; |
| |
| hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result); |
| if (hci_result == HCI_SUCCESS) |
| return (value >> HCI_LCD_BRIGHTNESS_SHIFT); |
| |
| return -EIO; |
| } |
| |
| static int lcd_proc_show(struct seq_file *m, void *v) |
| { |
| struct toshiba_acpi_dev *dev = m->private; |
| int value; |
| |
| if (!dev->backlight_dev) |
| return -ENODEV; |
| |
| value = get_lcd(dev->backlight_dev); |
| if (value >= 0) { |
| seq_printf(m, "brightness: %d\n", value); |
| seq_printf(m, "brightness_levels: %d\n", |
| HCI_LCD_BRIGHTNESS_LEVELS); |
| return 0; |
| } |
| |
| pr_err("Error reading LCD brightness\n"); |
| return -EIO; |
| } |
| |
| static int lcd_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, lcd_proc_show, PDE(inode)->data); |
| } |
| |
| static int set_lcd(struct toshiba_acpi_dev *dev, int value) |
| { |
| u32 hci_result; |
| |
| value = value << HCI_LCD_BRIGHTNESS_SHIFT; |
| hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result); |
| return hci_result == HCI_SUCCESS ? 0 : -EIO; |
| } |
| |
| static int set_lcd_status(struct backlight_device *bd) |
| { |
| struct toshiba_acpi_dev *dev = bl_get_data(bd); |
| return set_lcd(dev, bd->props.brightness); |
| } |
| |
| static ssize_t lcd_proc_write(struct file *file, const char __user *buf, |
| size_t count, loff_t *pos) |
| { |
| struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
| char cmd[42]; |
| size_t len; |
| int value; |
| int ret; |
| |
| len = min(count, sizeof(cmd) - 1); |
| if (copy_from_user(cmd, buf, len)) |
| return -EFAULT; |
| cmd[len] = '\0'; |
| |
| if (sscanf(cmd, " brightness : %i", &value) == 1 && |
| value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) { |
| ret = set_lcd(dev, value); |
| if (ret == 0) |
| ret = count; |
| } else { |
| ret = -EINVAL; |
| } |
| return ret; |
| } |
| |
| static const struct file_operations lcd_proc_fops = { |
| .owner = THIS_MODULE, |
| .open = lcd_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .write = lcd_proc_write, |
| }; |
| |
| static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status) |
| { |
| u32 hci_result; |
| |
| hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result); |
| return hci_result == HCI_SUCCESS ? 0 : -EIO; |
| } |
| |
| static int video_proc_show(struct seq_file *m, void *v) |
| { |
| struct toshiba_acpi_dev *dev = m->private; |
| u32 value; |
| int ret; |
| |
| ret = get_video_status(dev, &value); |
| if (!ret) { |
| int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0; |
| int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0; |
| int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0; |
| seq_printf(m, "lcd_out: %d\n", is_lcd); |
| seq_printf(m, "crt_out: %d\n", is_crt); |
| seq_printf(m, "tv_out: %d\n", is_tv); |
| } |
| |
| return ret; |
| } |
| |
| static int video_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, video_proc_show, PDE(inode)->data); |
| } |
| |
| static ssize_t video_proc_write(struct file *file, const char __user *buf, |
| size_t count, loff_t *pos) |
| { |
| struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
| char *cmd, *buffer; |
| int ret; |
| int value; |
| int remain = count; |
| int lcd_out = -1; |
| int crt_out = -1; |
| int tv_out = -1; |
| u32 video_out; |
| |
| cmd = kmalloc(count + 1, GFP_KERNEL); |
| if (!cmd) |
| return -ENOMEM; |
| if (copy_from_user(cmd, buf, count)) { |
| kfree(cmd); |
| return -EFAULT; |
| } |
| cmd[count] = '\0'; |
| |
| buffer = cmd; |
| |
| /* scan expression. Multiple expressions may be delimited with ; |
| * |
| * NOTE: to keep scanning simple, invalid fields are ignored |
| */ |
| while (remain) { |
| if (sscanf(buffer, " lcd_out : %i", &value) == 1) |
| lcd_out = value & 1; |
| else if (sscanf(buffer, " crt_out : %i", &value) == 1) |
| crt_out = value & 1; |
| else if (sscanf(buffer, " tv_out : %i", &value) == 1) |
| tv_out = value & 1; |
| /* advance to one character past the next ; */ |
| do { |
| ++buffer; |
| --remain; |
| } |
| while (remain && *(buffer - 1) != ';'); |
| } |
| |
| kfree(cmd); |
| |
| ret = get_video_status(dev, &video_out); |
| if (!ret) { |
| unsigned int new_video_out = video_out; |
| if (lcd_out != -1) |
| _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out); |
| if (crt_out != -1) |
| _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out); |
| if (tv_out != -1) |
| _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out); |
| /* To avoid unnecessary video disruption, only write the new |
| * video setting if something changed. */ |
| if (new_video_out != video_out) |
| ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out); |
| } |
| |
| return ret ? ret : count; |
| } |
| |
| static const struct file_operations video_proc_fops = { |
| .owner = THIS_MODULE, |
| .open = video_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .write = video_proc_write, |
| }; |
| |
| static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status) |
| { |
| u32 hci_result; |
| |
| hci_read1(dev, HCI_FAN, status, &hci_result); |
| return hci_result == HCI_SUCCESS ? 0 : -EIO; |
| } |
| |
| static int fan_proc_show(struct seq_file *m, void *v) |
| { |
| struct toshiba_acpi_dev *dev = m->private; |
| int ret; |
| u32 value; |
| |
| ret = get_fan_status(dev, &value); |
| if (!ret) { |
| seq_printf(m, "running: %d\n", (value > 0)); |
| seq_printf(m, "force_on: %d\n", dev->force_fan); |
| } |
| |
| return ret; |
| } |
| |
| static int fan_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, fan_proc_show, PDE(inode)->data); |
| } |
| |
| static ssize_t fan_proc_write(struct file *file, const char __user *buf, |
| size_t count, loff_t *pos) |
| { |
| struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
| char cmd[42]; |
| size_t len; |
| int value; |
| u32 hci_result; |
| |
| len = min(count, sizeof(cmd) - 1); |
| if (copy_from_user(cmd, buf, len)) |
| return -EFAULT; |
| cmd[len] = '\0'; |
| |
| if (sscanf(cmd, " force_on : %i", &value) == 1 && |
| value >= 0 && value <= 1) { |
| hci_write1(dev, HCI_FAN, value, &hci_result); |
| if (hci_result != HCI_SUCCESS) |
| return -EIO; |
| else |
| dev->force_fan = value; |
| } else { |
| return -EINVAL; |
| } |
| |
| return count; |
| } |
| |
| static const struct file_operations fan_proc_fops = { |
| .owner = THIS_MODULE, |
| .open = fan_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .write = fan_proc_write, |
| }; |
| |
| static int keys_proc_show(struct seq_file *m, void *v) |
| { |
| struct toshiba_acpi_dev *dev = m->private; |
| u32 hci_result; |
| u32 value; |
| |
| if (!dev->key_event_valid) { |
| hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result); |
| if (hci_result == HCI_SUCCESS) { |
| dev->key_event_valid = 1; |
| dev->last_key_event = value; |
| } else if (hci_result == HCI_EMPTY) { |
| /* better luck next time */ |
| } else if (hci_result == HCI_NOT_SUPPORTED) { |
| /* This is a workaround for an unresolved issue on |
| * some machines where system events sporadically |
| * become disabled. */ |
| hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result); |
| pr_notice("Re-enabled hotkeys\n"); |
| } else { |
| pr_err("Error reading hotkey status\n"); |
| return -EIO; |
| } |
| } |
| |
| seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid); |
| seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event); |
| return 0; |
| } |
| |
| static int keys_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, keys_proc_show, PDE(inode)->data); |
| } |
| |
| static ssize_t keys_proc_write(struct file *file, const char __user *buf, |
| size_t count, loff_t *pos) |
| { |
| struct toshiba_acpi_dev *dev = PDE(file->f_path.dentry->d_inode)->data; |
| char cmd[42]; |
| size_t len; |
| int value; |
| |
| len = min(count, sizeof(cmd) - 1); |
| if (copy_from_user(cmd, buf, len)) |
| return -EFAULT; |
| cmd[len] = '\0'; |
| |
| if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) { |
| dev->key_event_valid = 0; |
| } else { |
| return -EINVAL; |
| } |
| |
| return count; |
| } |
| |
| static const struct file_operations keys_proc_fops = { |
| .owner = THIS_MODULE, |
| .open = keys_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .write = keys_proc_write, |
| }; |
| |
| static int version_proc_show(struct seq_file *m, void *v) |
| { |
| seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION); |
| seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION); |
| return 0; |
| } |
| |
| static int version_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, version_proc_show, PDE(inode)->data); |
| } |
| |
| static const struct file_operations version_proc_fops = { |
| .owner = THIS_MODULE, |
| .open = version_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| }; |
| |
| /* proc and module init |
| */ |
| |
| #define PROC_TOSHIBA "toshiba" |
| |
| static void __devinit |
| create_toshiba_proc_entries(struct toshiba_acpi_dev *dev) |
| { |
| if (dev->backlight_dev) |
| proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir, |
| &lcd_proc_fops, dev); |
| if (dev->video_supported) |
| proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir, |
| &video_proc_fops, dev); |
| if (dev->fan_supported) |
| proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir, |
| &fan_proc_fops, dev); |
| if (dev->hotkey_dev) |
| proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir, |
| &keys_proc_fops, dev); |
| proc_create_data("version", S_IRUGO, toshiba_proc_dir, |
| &version_proc_fops, dev); |
| } |
| |
| static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev) |
| { |
| if (dev->backlight_dev) |
| remove_proc_entry("lcd", toshiba_proc_dir); |
| if (dev->video_supported) |
| remove_proc_entry("video", toshiba_proc_dir); |
| if (dev->fan_supported) |
| remove_proc_entry("fan", toshiba_proc_dir); |
| if (dev->hotkey_dev) |
| remove_proc_entry("keys", toshiba_proc_dir); |
| remove_proc_entry("version", toshiba_proc_dir); |
| } |
| |
| static const struct backlight_ops toshiba_backlight_data = { |
| .get_brightness = get_lcd, |
| .update_status = set_lcd_status, |
| }; |
| |
| static int __devinit toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev) |
| { |
| acpi_status status; |
| int error; |
| |
| dev->hotkey_dev = input_allocate_device(); |
| if (!dev->hotkey_dev) { |
| pr_info("Unable to register input device\n"); |
| return -ENOMEM; |
| } |
| |
| dev->hotkey_dev->name = "Toshiba input device"; |
| dev->hotkey_dev->phys = "toshiba_acpi/input0"; |
| dev->hotkey_dev->id.bustype = BUS_HOST; |
| |
| error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL); |
| if (error) |
| goto err_free_dev; |
| |
| status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL); |
| if (ACPI_FAILURE(status)) { |
| pr_info("Unable to enable hotkeys\n"); |
| error = -ENODEV; |
| goto err_free_keymap; |
| } |
| |
| error = input_register_device(dev->hotkey_dev); |
| if (error) { |
| pr_info("Unable to register input device\n"); |
| goto err_free_keymap; |
| } |
| |
| return 0; |
| |
| err_free_keymap: |
| sparse_keymap_free(dev->hotkey_dev); |
| err_free_dev: |
| input_free_device(dev->hotkey_dev); |
| dev->hotkey_dev = NULL; |
| return error; |
| } |
| |
| static int toshiba_acpi_remove(struct acpi_device *acpi_dev, int type) |
| { |
| struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev); |
| |
| remove_toshiba_proc_entries(dev); |
| |
| if (dev->hotkey_dev) { |
| input_unregister_device(dev->hotkey_dev); |
| sparse_keymap_free(dev->hotkey_dev); |
| } |
| |
| if (dev->bt_rfk) { |
| rfkill_unregister(dev->bt_rfk); |
| rfkill_destroy(dev->bt_rfk); |
| } |
| |
| if (dev->backlight_dev) |
| backlight_device_unregister(dev->backlight_dev); |
| |
| if (dev->illumination_supported) |
| led_classdev_unregister(&dev->led_dev); |
| |
| kfree(dev); |
| |
| return 0; |
| } |
| |
| static const char * __devinit find_hci_method(acpi_handle handle) |
| { |
| acpi_status status; |
| acpi_handle hci_handle; |
| |
| status = acpi_get_handle(handle, "GHCI", &hci_handle); |
| if (ACPI_SUCCESS(status)) |
| return "GHCI"; |
| |
| status = acpi_get_handle(handle, "SPFC", &hci_handle); |
| if (ACPI_SUCCESS(status)) |
| return "SPFC"; |
| |
| return NULL; |
| } |
| |
| static int __devinit toshiba_acpi_add(struct acpi_device *acpi_dev) |
| { |
| struct toshiba_acpi_dev *dev; |
| const char *hci_method; |
| u32 hci_result; |
| u32 dummy; |
| bool bt_present; |
| int ret = 0; |
| struct backlight_properties props; |
| |
| pr_info("Toshiba Laptop ACPI Extras version %s\n", |
| TOSHIBA_ACPI_VERSION); |
| |
| hci_method = find_hci_method(acpi_dev->handle); |
| if (!hci_method) { |
| pr_err("HCI interface not found\n"); |
| return -ENODEV; |
| } |
| |
| dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
| if (!dev) |
| return -ENOMEM; |
| dev->acpi_dev = acpi_dev; |
| dev->method_hci = hci_method; |
| acpi_dev->driver_data = dev; |
| |
| if (toshiba_acpi_setup_keyboard(dev)) |
| pr_info("Unable to activate hotkeys\n"); |
| |
| mutex_init(&dev->mutex); |
| |
| /* enable event fifo */ |
| hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result); |
| |
| props.type = BACKLIGHT_PLATFORM; |
| props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1; |
| dev->backlight_dev = backlight_device_register("toshiba", |
| &acpi_dev->dev, |
| dev, |
| &toshiba_backlight_data, |
| &props); |
| if (IS_ERR(dev->backlight_dev)) { |
| ret = PTR_ERR(dev->backlight_dev); |
| |
| pr_err("Could not register toshiba backlight device\n"); |
| dev->backlight_dev = NULL; |
| goto error; |
| } |
| dev->backlight_dev->props.brightness = get_lcd(dev->backlight_dev); |
| |
| /* Register rfkill switch for Bluetooth */ |
| if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) { |
| dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth", |
| &acpi_dev->dev, |
| RFKILL_TYPE_BLUETOOTH, |
| &toshiba_rfk_ops, |
| dev); |
| if (!dev->bt_rfk) { |
| pr_err("unable to allocate rfkill device\n"); |
| ret = -ENOMEM; |
| goto error; |
| } |
| |
| ret = rfkill_register(dev->bt_rfk); |
| if (ret) { |
| pr_err("unable to register rfkill device\n"); |
| rfkill_destroy(dev->bt_rfk); |
| goto error; |
| } |
| } |
| |
| if (toshiba_illumination_available(dev)) { |
| dev->led_dev.name = "toshiba::illumination"; |
| dev->led_dev.max_brightness = 1; |
| dev->led_dev.brightness_set = toshiba_illumination_set; |
| dev->led_dev.brightness_get = toshiba_illumination_get; |
| if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev)) |
| dev->illumination_supported = 1; |
| } |
| |
| /* Determine whether or not BIOS supports fan and video interfaces */ |
| |
| ret = get_video_status(dev, &dummy); |
| dev->video_supported = !ret; |
| |
| ret = get_fan_status(dev, &dummy); |
| dev->fan_supported = !ret; |
| |
| create_toshiba_proc_entries(dev); |
| |
| return 0; |
| |
| error: |
| toshiba_acpi_remove(acpi_dev, 0); |
| return ret; |
| } |
| |
| static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event) |
| { |
| struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev); |
| u32 hci_result, value; |
| |
| if (event != 0x80) |
| return; |
| do { |
| hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result); |
| if (hci_result == HCI_SUCCESS) { |
| if (value == 0x100) |
| continue; |
| /* act on key press; ignore key release */ |
| if (value & 0x80) |
| continue; |
| |
| if (!sparse_keymap_report_event(dev->hotkey_dev, |
| value, 1, true)) { |
| pr_info("Unknown key %x\n", |
| value); |
| } |
| } else if (hci_result == HCI_NOT_SUPPORTED) { |
| /* This is a workaround for an unresolved issue on |
| * some machines where system events sporadically |
| * become disabled. */ |
| hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result); |
| pr_notice("Re-enabled hotkeys\n"); |
| } |
| } while (hci_result != HCI_EMPTY); |
| } |
| |
| |
| static struct acpi_driver toshiba_acpi_driver = { |
| .name = "Toshiba ACPI driver", |
| .owner = THIS_MODULE, |
| .ids = toshiba_device_ids, |
| .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, |
| .ops = { |
| .add = toshiba_acpi_add, |
| .remove = toshiba_acpi_remove, |
| .notify = toshiba_acpi_notify, |
| }, |
| }; |
| |
| static int __init toshiba_acpi_init(void) |
| { |
| int ret; |
| |
| toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir); |
| if (!toshiba_proc_dir) { |
| pr_err("Unable to create proc dir " PROC_TOSHIBA "\n"); |
| return -ENODEV; |
| } |
| |
| ret = acpi_bus_register_driver(&toshiba_acpi_driver); |
| if (ret) { |
| pr_err("Failed to register ACPI driver: %d\n", ret); |
| remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); |
| } |
| |
| return ret; |
| } |
| |
| static void __exit toshiba_acpi_exit(void) |
| { |
| acpi_bus_unregister_driver(&toshiba_acpi_driver); |
| if (toshiba_proc_dir) |
| remove_proc_entry(PROC_TOSHIBA, acpi_root_dir); |
| } |
| |
| module_init(toshiba_acpi_init); |
| module_exit(toshiba_acpi_exit); |